Bag

Abstract

Provided is a bag that, as a bag, makes it possible to easily and stably hold a container with a simple operation, as well as to greatly reduce wetting of the bag by a liquid even if a beverage has leaked out of the container. This bag comprises a body that has: a bottom; a peripheral wall connected to the bottom at a peripheral margin of the bottom; a space section that is surrounded by the bottom and the peripheral wall and can hold contents; and an opening section through which to insert the contents into the space section. A position regulation member having a regulation wall for regulating movement of the contents in the interior of the space section is provided to the body. The position regulation member is bonded to at least an inner surface of the peripheral wall. The regulation wall is configured so as to be able to form a first shape state in which an opposing surface forms a concave surface, and a second shape state in which the opposing surface forms a convex surface, in a case where the opposing surface is a surface, among surfaces of the regulation wall, that faces the contents if the contents are arranged in the space section so that the movement thereof is regulated by the regulation wall.

Description

bag body

[0001] The present invention relates to a pouch.

[0002] Conventionally, various stores such as convenience stores and fast food restaurants have provided food and drink products such as beverages in simple containers or wrapped in paper. In recent years, it has become common for customers to pour beverages such as coffee into containers themselves, especially at convenience stores.

[0003] Furthermore, fast food restaurants have seen a rapid increase in takeout services, where customers can take home food and beverages they have purchased, and delivery services, where staff deliver food and beverages to a location designated by the customer. Generally, when customers use takeout or delivery services, the food and beverages are served in a bag. Note that, in this specification, the food and beverages served in the bag may be referred to as "contents" or "product." Bags made of resin or paper-based materials are commonly used, and various shapes have been used in the past. For example, as disclosed in Patent Documents 1 and 2, conventionally known bags have a bottom, side walls, and a storage space (storage space) surrounded by the bottom and side walls. Products are served in this storage space. However, the bags disclosed in Patent Documents 1 and 2 have the risk of store staff carelessly placing products in the storage space and serving them to customers. In this case, there is a risk that the container stored in the storage space may be provided to the customer in a state where it is easily toppled within the storage space. Since the product often includes a beverage stored in a container, if the container falls within the storage space before consumption, there is a risk that the beverage may spill out of the container. To solve this problem, it is conceivable to provide the product to the customer by storing a cup holder, as disclosed in Patent Document 3, within the storage space of the bag and holding the container in the cup holder.

[0004] Utility Model Registration No. 3128559 JP 2022-056066 A JP 2019-038596 A

[0005] The cup holder disclosed in Patent Document 3 has an opening for holding a container. The container is held in the cup holder by inserting its bottom into the opening. However, in busy stores, there is a risk that a customer may be served a container containing a beverage without it being properly inserted into the opening of the cup holder. In this case, since the container is not held in place by the cup holder, it may tip over within the storage space of the bag, causing the beverage to spill out of the container and wet other products stored in the storage space or the bag itself. Therefore, the cup holder disclosed in Patent Document 3 has difficulty reliably addressing the risk of the container tipping over within the bag and the risk of the beverage spilling out of the container as a result of the tipping. Furthermore, cup holders are generally formed separately from the bag. Therefore, when serving a beverage to a customer, a store clerk must assemble the cup holder before placing the container in the storage space of the bag, and then place the assembled cup holder in the storage space. This is very time-consuming for the store clerk and can lead to problems such as complicated work. Furthermore, even if the container is held in the cup holder in the storage space of the bag, there is a risk that the container may easily come off the cup holder due to shaking that occurs while a customer is carrying the product home or while a store clerk is delivering the product, and there is also a risk that the beverage may spill out of the container due to shaking while the container is held in the cup holder. Generally, a container has a lid attached to an opening formed at the top end. This has reduced the risk of the beverage inside the container spilling out of the container. However, when the container is shaken, the beverage may leak out of the gap between the container and the lid, and it has been difficult to completely eliminate this leakage.

[0006] Furthermore, the cup holder disclosed in Patent Document 3 is required to have sufficient strength to hold a container inserted into the opening. Therefore, stiff cardboard and corrugated cardboard are often used as materials for forming the cup holder. Furthermore, techniques for forming cup holders often involve folding the material or pulp molding. Cup holders formed using such materials and techniques often have a three-dimensional shape to hold the container. However, stackability must be taken into consideration when distributing and storing the cup holder in a store. Therefore, the cup holder must maintain a relatively flat shape during distribution and storage in a store. Therefore, the cup holder must be able to be easily transformed from a flat shape to a three-dimensional shape. As described above, typical cup holders are made of strong paper materials such as cardboard. Therefore, in order to easily transform the cup holder from a flat shape to a three-dimensional shape, slits and / or creases must be formed in advance at the deformation locations. However, if such slits or creases are formed, there is a risk that beverage leaking from the container may pass through the slits or creases in the cup holder and wet the bag.

[0007] The present invention has been made in consideration of such problems, and aims to provide a bag body that can hold a container easily and stably with a simple operation, and that can significantly reduce the amount of liquid wetting the bag body even if a beverage leaks from the container.

[0008] The gist of the present invention is the following (1) to (108): (1) A bag body having a bottom and a peripheral wall connected to the bottom at a periphery of the bottom, and having a space surrounded by the bottom and the peripheral wall and capable of storing contents, and an opening for inserting the contents into the space, wherein the body is provided with a position restricting member having a restricting wall that restricts movement of the contents within the space, the position restricting member being joined to at least an inner surface of the peripheral wall, and wherein, when the contents are placed in the space so that the restricting wall restricts the movement, and when a surface of the restricting wall that faces the contents is designated as a facing surface, the restricting wall is configured to be able to form at least a first shape state in which the facing surface forms a concave surface, and a second shape state different from the first shape state. (2) The bag according to (1), wherein the inner surface of the peripheral wall portion has at least one corner extending from the bottom portion toward the opening, and wherein the position restricting member covers at least a portion of at least one of the corners when the restricting wall portion is in the second shape state. (3) The bag according to (2), wherein the peripheral wall portion has a pair of opposing wall surface portions and a pair of opposing side wall surface portions, each of the wall surface portions being connected to the side wall surface portions at a side edge of the wall surface portion, and the corner portion is formed at a boundary position between the wall surface portion and the side wall surface portion. (4) The bag according to (3), wherein the position restricting member is joined to the wall surface portion and the side wall surface portion. (5) The bag according to (3), wherein, when the pair of wall surface portions is a first wall surface portion and a second wall surface portion, the pair of side wall surface portions has a main body gusset portion formed therein that changes the separation distance between the first wall surface portion and the second wall surface portion. (6) The bag according to (1), wherein the position restricting member further includes an inner bottom portion that supports the contents inside the space portion. (7) The bag according to (6), wherein the inner bottom portion has a gusset. (8) The bag according to (1), wherein the second shape state is a state in which the restricting wall portion forms a convex surface on the facing surface so as to fit along the inner surface of the peripheral wall portion.(9) The bag according to (1), wherein the position regulating member has an intervening wall that is in face contact with the inner surface of the peripheral wall and is located between the peripheral wall and the regulating wall, and the intervening wall is joined to at least the inner surface of the peripheral wall. (10) The bag according to (9), wherein, when the regulating wall is in the second shape state, the lower end of the regulating wall is positioned above the lower end of the intervening wall. (11) The bag according to (10), wherein a gap space is formed between the intervening wall and the peripheral wall. (12) The bag according to (1), wherein a folded portion is formed at the upper end of the regulating wall. (13) The bag according to (1), wherein a reinforcing material is provided at the upper end of the regulating wall. (14) The bag according to (1), wherein the upper end of the regulating wall is provided with a reinforcing material, and the upper end of the regulating wall has a folded portion that is formed to cover the reinforcing material. (15) The bag according to (1) above, wherein the peripheral wall portion has a pair of opposing wall surface portions, and when the pair of wall surface portions is a first wall surface portion and a second wall surface portion, a lid portion is formed at an upper end of the first wall surface portion so as to be able to cover the upper end of the second wall surface portion, and the lid portion is provided with an adhesive placement portion in which an adhesive is placed so that the adhesive can be adhered to the second wall surface portion in a state in which the upper end of the second wall surface portion is covered by the lid portion. (16) The bag according to (15) above, wherein a grip portion is provided at a predetermined position of the first wall surface portion. (17) The bag according to (16) above, wherein the grip portion stands upward when the upper end of the second wall surface portion is covered by the lid portion. (18) The bag according to (15) above, wherein the first wall surface portion is provided with a weakened portion at a position avoiding the lid portion or in a portion of the lid portion avoiding the adhesive placement portion. (19) The bag according to (1), wherein the position regulating member is waterproof. (20) The bag according to (1), wherein the main body is formed of a paper-based material. (21) The bag according to (1), wherein a waterproof layer is provided on an upper surface side of the bottom.(22) The bag according to (1), wherein the content is a container, and when the content is placed in the space, a gap exists between at least a portion of the upper end of the restricting wall and the outer peripheral surface of the container. (23) The bag according to (1), wherein the second shape state is a state in which the facing surface forms a convex surface. (24) The bag according to (6), wherein the inner bottom and the restricting wall are continuously connected. (25) The bag according to (6), wherein, when the restricting wall of the position restricting member is in the first shape state, at least a portion of the inner bottom has an inclined surface that slopes downward from a boundary position between the inner bottom and the restricting wall in a direction approaching the peripheral wall. (26) The bag according to (15), wherein a release paper is provided so as to cover the adhesive placement portion. (27) The bag according to (26), wherein the release paper has a display portion on the exposed surface side of the release paper. (28) A container having a body including a bottom and a peripheral wall connected to the bottom at the periphery thereof, the body forming a space surrounded by the bottom and the peripheral wall and capable of storing contents, and an opening for inserting the contents into the space, the peripheral wall having a first wall and a second wall as a pair of opposing wall portions, an adhesive member having a first adhesive surface forming portion and a second adhesive surface forming portion attached to the outer surface of the peripheral wall, the first adhesive surface forming portion attached to a predetermined region of the outer surface of the first wall, and at least a part of the second adhesive surface forming portion is configured to be adhered to the outer surface of the second wall when a bent structure is formed defined by the bent portion of the first wall and the second wall so that the outer surface of the first wall and the outer surface of the second wall face each other with a predetermined portion of the upper end of the first wall and a predetermined portion of the upper end of the second wall overlapping each other. When the bent structure is not formed, the second adhesive surface forming portion is prevented from being adhered to the outer surface of the peripheral wall portion.(29) The bag body according to (28), wherein, when the second adhesive surface forming portion is adhered to the peripheral wall portion, a grippable gap can be formed between a first peripheral wall portion forming portion of the peripheral wall portion that forms the bent structure and a second peripheral wall portion forming portion excluding the first peripheral wall portion forming portion. (30) The bag body according to (28), wherein, when the bent structure is formed, the second adhesive surface forming portion is adhered to the first wall surface portion and the second wall surface portion. (31) The bag body according to (28), wherein the bent structure is defined by a portion where the first wall surface portion and the second wall surface portion are bent toward the second wall surface portion so that the outer surfaces of the first wall surface portion and the second wall surface portion face each other. (32) The bag according to (28) above, wherein the bent structure is defined by a portion where the first wall portion and the second wall portion are bent toward the first wall portion so that the outer surfaces of the first wall portion and the second wall portion face each other. (33) The bag according to (28) above, wherein the opening is concealed by the bent structure. (34) The bag according to (28) above, wherein a peeling member having peelability is attached so as to cover the second adhesive surface forming portion. (35) The bag according to (34) above, wherein the peeling member is configured to be prevented from being completely separated from the adhesive member.(36) A container having a body including a bottom and a peripheral wall connected to the bottom at the periphery of the bottom, and forming a space surrounded by the bottom and the peripheral wall and capable of storing contents, and an opening for inserting the contents into the space, wherein the peripheral wall has a first wall and a second wall as a pair of opposing wall portions, and a seal sheet having a removably provided seal member having an adhesive surface forming portion is attached to the outer surface of the peripheral wall, and when a bent structure is formed by bending the first wall and the second wall so that the outer surface of the first wall and the outer surface of the second wall face each other with a predetermined portion of the upper end of the first wall and a predetermined portion of the upper end of the second wall overlapping each other, the seal member is arranged to straddle the lower end of the bent structure, and is configured to be able to adhere to the peripheral wall with the adhesive surface forming portion facing the first wall and the second wall, (37) The bag body according to (36), wherein the sealing member has a through hole configured such that the gap can be exposed from the through hole when the sealing member is adhered to the peripheral wall portion, and the first peripheral wall forming portion of the peripheral wall portion that forms the bent structure and the second peripheral wall forming portion excluding the first peripheral wall forming portion are formed as a grippable gap when the sealing member is adhered to the peripheral wall portion.(38) A container having a main body that includes a bottom and a peripheral wall connected to the bottom at the periphery of the bottom, and that forms a space surrounded by the bottom and the peripheral wall and capable of storing contents, and an opening for inserting the contents into the space, wherein the peripheral wall has a first wall and a second wall as a pair of opposing wall surfaces, and the peripheral wall has a small piece having an adhesive-attached surface on which an adhesive material is arranged, and the small piece has a fixed end fixed to the peripheral wall and a free end displaceable relative to the peripheral wall, and the free end of the small piece can be rotated around at least the fixed end as an axis, and a releasable part is provided that has a small piece-part opposing surface at a position that can face the adhesive-attached surface and can be releasably attached to the small piece at the small piece-part opposing surface, and the position at which the releasable part is provided is a position that avoids exposure to the outside of the main body, A bag configured so that, when at least a portion of the small piece portion is peeled off from the releasable portion and bent, the small piece portion can be adhered to the peripheral wall portion in the region of the adhesive-applied surface so as to prevent movement that separates the first wall portion and the second wall portion. (39) The bag as described in (38) above, in which an adhesive piece formed separately from the peripheral wall portion is adhered to the peripheral wall portion, and a portion of the adhesive piece forms the small piece. (40) The bag as described in (38) above, in which the releasable portion is formed separately from the peripheral wall portion and is made of release paper. (41) The bag as described in (40) above, in which an adhesive piece formed separately from the peripheral wall portion is adhered to the peripheral wall portion, and a portion of the adhesive piece forms the small piece, and the release paper has a surface opposite to the surface facing the small piece adhered to the adhesive piece. (42) The bag body according to (40) above, wherein an adhesive piece formed separately from the peripheral wall portion is adhered to the peripheral wall portion, a part of the adhesive piece forms the small piece portion, the adhesive piece is adhered to the outer surface side of the peripheral wall portion, and the release paper is adhered to the inner surface side of the peripheral wall portion.(43) The bag according to (38), wherein the small piece portions and the releasable portions are each provided at a plurality of locations, and the releasable portions are each provided at a position corresponding to each of the small piece portions. (44) The bag according to (38), wherein a tab configured to be able to be grasped is extended from the free end side of the small piece portions.(45) The main body has at least one corner extending from the bottom toward the opening on the inner surface of the peripheral wall, the main body is made of a folded structure formed by folding a blank made of a paper-based material, and the position regulating member is joined to the inner surface of the folded structure, the blank has an upper edge portion of the blank that forms the opening and a lower edge portion of the blank that is formed on the opposite end side of the upper edge portion of the blank, and has a first blank side end portion and a second blank side end portion as blank side end portions located on the opposite ends and connected to the upper edge portion and the lower edge portion of the blank, and has a first overlapping structure corresponding portion determined at a predetermined portion of the first blank side end portion and a second overlapping structure corresponding portion determined at a predetermined portion of the second blank side end portion as overlapping structure corresponding portions for joining a predetermined portion inward from the first blank side end portion and a predetermined portion inward from the second blank side end portion to each other, the folding structure has side edge adhesive portions that bond the first overlapping structure corresponding portion and the second overlapping structure corresponding portion to each other, and the first overlapping structure corresponding portion and the second overlapping structure corresponding portion are positioned in order from the inner surface side of the folding structure, and in the blank material, an area that is intended to face the position control member is defined as an intended facing area, a position where the blank material can be folded at a portion corresponding to the corner is defined as a corner-corresponding bending position, and an area of ​​the first overlapping structure corresponding portion that faces the inside of the folding structure is defined as a first inward-facing area, and an area of ​​the second overlapping structure corresponding portion that faces the inside of the folding structure is defined as a second inward-facing area, at least one of the intended facing areas is defined as an area that avoids the second inward-facing area and crosses the corner-corresponding bending position, and one of two side edges of the intended facing area is defined as being located in the first inward-facing area.(46) The bag body according to (45), wherein, in the blank, a portion of the first overlap structure corresponding portion that corresponds to the side end adhesive portion is defined as an adhesive portion corresponding portion (A), and a portion that corresponds to a portion that joins the position regulating member and the folding structure is defined as an adhesive portion corresponding portion (B), at least a part of the adhesive portion corresponding portion (A) also serves as at least a part of the adhesive portion corresponding portion (B). (47) The bag body according to (45), wherein the main body has a handle structure bonded to the folding structure, and when a region in the blank corresponding to a region bonded to the handle structure is defined as a handle adhesive region, the handle adhesive region is defined as a region that does not cross an edge of the side end of the blank in the state of the folding structure. (48) The peripheral wall portion has a pair of opposing wall surface portions and a pair of opposing side wall surface portions, and each of the wall surface portions is connected to the side wall surface portions at the side edge of the wall surface portion, the main body is made of a folded structure formed by folding a blank material made of a paper-based material, and the position regulating member is joined to the inner surface side of the folded structure, and the blank material has an upper edge portion of the blank material that forms the opening and a lower edge portion of the blank material that is formed on the opposite end side of the upper edge portion of the blank material, The folding structure includes a set of first inwardly folded portions formed by folding a set of first lower portions defined by portions of the blank that extend from lower ends of the respective side wall portions to the lower edge of the blank toward the inside of the folding structure, and a set of second inwardly folded portions formed by folding a set of second lower portions defined by portions of the blank that extend from the lower ends of the respective wall portions to the lower edge of the blank toward the inside of the folding structure on the underside of the first lower portions, and the set of second inwardly folded portions also includes an overlapping structure defined by portions where the set of second inwardly folded portions overlap each other, and at least one of the set of second inwardly folded portions has a bottom fold formed by folding back the lower edge of the blank, and at least a portion of the bottom fold is disposed in the overlapping structure.(49) The bag described in (48) above, wherein the second inward folded portion has an oblique folded portion formed by folding the blank back around a folding axis that is a straight line extending obliquely relative to the lower end edge of the lower edge of the blank, the first inward folded portion is connected to the oblique folded portion of the second inward folded portion, and the width of the second inward folded portion decreases toward the lower end of the lower edge of the blank. (50) The bag described in (1) above, wherein, at least in the second shape state, the position regulating member has a folded structure portion on the regulating wall portion. (51) The bag described in (1) above, wherein the peripheral wall portion has a first wall surface portion and a second wall surface portion as a pair of opposing wall surface portions, and at least one position regulating member is joined to the first wall surface portion and the second wall surface portion. (52) The bag described in (1) above, wherein an insole material is provided on the upper surface side of the bottom portion. (53) The bag according to (1), wherein the insole material is a resin sheet. (54) The bag according to (53), wherein the insole material covers the bottom and a predetermined region on the lower end side of the peripheral wall. (55) The bag according to (1), wherein the peripheral wall has a pair of opposing wall surface portions and a pair of opposing side wall surface portions, and when the pair of wall surface portions is a first wall surface portion and a second wall surface portion, a main body gusset portion is formed in the pair of side wall surface portions to change the separation distance between the first wall surface portion and the second wall surface portion, and a deformation restricting structure is provided to restrict deformation of the main body gusset portion when the main body gusset portion is folded at a predetermined position on the side wall portion. (56) The bag according to (1) above, wherein the main body is provided with a handle portion, the handle portion having a handle sheet portion and a through portion that penetrates the handle sheet portion, and a reinforcing portion is provided on the surface of the handle sheet portion so as to face a predetermined region at least above the through portion. (57) The bag according to (56) above, wherein the reinforcing portion has a structure in which a reinforcing material is bonded to the surface of the handle sheet portion, and the reinforcing material is a resin sheet. (58) The bag according to (56) above, wherein the reinforcing material is partially bonded to the handle sheet portion. (59) The bag according to (56) above, wherein the reinforcing portion has a structure in which a reinforcing material is bonded to the surface of the handle sheet portion, and the reinforcing material is a nonwoven fabric.(60) The bag according to (59) above, wherein the reinforcing material is partially bonded to the handle sheet portion, and the nonwoven fabric contains long fibers. (61) The bag according to (56) above, wherein the reinforcing portion has a folded structure on the upper end side of the handle sheet portion, and a reinforcing film is interposed between the opposing portions of the handle sheet portion that form the folded structure. (62) The bag according to (56) above, wherein the handle sheet portion is formed integrally with the main body. (63) The bag according to (56) above, wherein the handle sheet portion is formed separately from the main body, and the handle sheet portion and the main body are joined at a portion more inward than the side ends of the handle sheet portion. (64) The bag according to (56) above, wherein the peripheral wall portion has a pair of opposing wall surface portions, the handle sheet portion is provided on each of the pair of wall surface portions, and the width of the handle sheet portion is smaller than the width of the side wall portions. (65) The bag according to (56) above, wherein the peripheral wall portion has a pair of opposing wall surface portions, the handle sheet portion is provided on each of the pair of wall surface portions, and an adhesive is disposed on the handle sheet portion provided on at least one of the side wall portions. (66) The bag according to (1) above, wherein a handle portion is provided on the main body, and the handle portion has a handle support sheet portion, a cutout portion cut out from the upper edge of the handle support sheet portion to a predetermined position, a handle material arranged to cross at least two points on the outline of the cutout, and a covering material covering a part of the handle material, the handle support sheet portion and the covering material sandwich the handle material and adhere the handle material, and the adhesive auxiliary sheet is provided between the handle support sheet portion and the covering material.(67) A bag body as described in (1) above, wherein the peripheral wall portion has a pair of opposing wall surface portions and a pair of opposing side wall surface portions, each of the wall surface portions being connected to the side wall surface portion at the side edge of the wall surface portion, the main body being made of a folded structure formed by folding a blank material made of a paper-based material, and the position control member being joined to the inner side of the folded structure, and the position control member being configured in the shape of a continuous strip arranged from one side edge of the blank material to the other side edge, and being joined to the blank material at a predetermined position. (68) The bag according to (67) above, wherein the restricting member joint portion that joins the position restricting member and the blank is composed of a plurality of unit joint portions that are independent of each other and provided at different positions, at least one of the restricting wall portions is formed by a portion sandwiched between at least one pair of adjacent unit joint portions, and the length of the upper edge of the restricting wall portion is longer than the length of the lower edge of the restricting wall portion. (69) The bag according to (1) above, wherein the position restricting member is water-absorbent. (70) The bag according to (1) above, wherein the position restricting member has a number of restricting wall penetration portions. (71) The bag according to (1) above, wherein the position restricting member is composed of a fiber bundle formed by arranging a number of long fibers. (72) The bag according to (1) above, wherein the area of ​​the facing surface of the restricting wall portion is larger than the area of ​​the surface region of the peripheral wall portion that corresponds to the facing surface. (73) The bag body according to (1), wherein, in the second shape state, an overlapping portion is formed on the restricting wall portion.(74) The main body is configured so that the three-dimensional structure of the main body can be transformed from a first structure to a second structure, and when the main body is in the first structure, the main body has a set of folded wall surface portions folded from the upper end to the lower end to form a gusset portion, and opposing wall surface portions facing each other across the folded wall surface portions, and each of the opposing wall surface portions is connected to the folded wall surface portions at two side edges thereof, and has a lower edge joint portion that joins the lower edge portion of the opposing wall surface portion and the lower edge portion of the folded wall surface portion facing the first lower edge portion; and when the main body is in the second structure, the main body has main body gusset portions on the peripheral wall portion, the bottom portion, and the side wall surface portions, The bag body described in (1) above, wherein the peripheral wall portion has a pair of opposing wall surface portions and a pair of opposing side wall surface portions, and is connected to the side wall surface portions at two side edges of each of the wall surface portions, and has corners at the boundaries between the wall surface portions and the side wall surface portions, and is configured such that the three-dimensional structure of the main body is transformed from the first structure to the second structure when the main body is folded so as to satisfy the following first to fourth conditions: Condition 1: The gusset portion of the first structure is expanded. Condition 2: A predetermined reference position from the lower end side of each of the folded wall portions toward the upper side is used as a first folding axis, and the folded wall portions are folded inwardly to form the portion of the folded wall portion above the reference position as the side wall portion. Condition 3: In the portion of the folded wall portion below the reference position, a straight line extending obliquely from the outer end of the folded wall portion toward the inner end of the lower edge joint portion is used as a second folding axis, and the folded wall portion is folded inwardly. Condition 4: A straight line connecting two positions connected to the reference position on each of the two side edges of the opposing wall portion is used as a third folding axis, and the opposing wall portion is folded to form the portion of the opposing wall portion above the folding axis as the wall portion. (75) A bag body according to (74), wherein a film material is joined to at least the lower edge portions of the opposing wall portion. (76) The bag according to (74) above, wherein a crease is provided at a position corresponding to at least one of the first to third folding axes. (77) The bag according to (1) above, having a hanging tool receiving structure.

[0009] According to the present invention, a bag is provided that can hold a container simply and stably with a simple operation and can significantly reduce wetting of the bag by liquid even if beverage leaks from the container.

[0010] FIG. 1A is a plan view (top view) illustrating an example of the first embodiment. FIG. 1B is a front view illustrating an example of the first embodiment. FIG. 1C is a side view illustrating an example of the first embodiment. FIG. 2A is a plan view illustrating an example of the first embodiment. FIG. 2B is a front view illustrating an example of a use state of a bag according to the first embodiment. FIG. 3A is a cross-sectional view schematically illustrating a cross section taken along line A-A in FIG. 1A. FIG. 3B is a cross-sectional view schematically illustrating a cross section taken along line B-B in FIG. 2B. FIGS. 4A to 4C are views illustrating a manufacturing process of the bag according to the first embodiment. FIGS. 5A to 5C are views illustrating a manufacturing process of the bag according to the first embodiment. FIG. 5D is a partial cross-sectional view schematically illustrating an example in which a waterproof sheet is provided as a waterproof layer on the bottom. FIGS. 6A to 6C are plan views illustrating an example of the first embodiment. FIGS. 7A to 7D are plan views illustrating an example of the first embodiment. FIG. 8A is a plan view (top view) for explaining an example of the second embodiment. FIG. 8B is a front view for explaining an example of the second embodiment. FIG. 8C is a side view for explaining an example of the second embodiment. FIG. 9A is a cross-sectional view schematically showing a cross section taken along line CC in FIG. 8A. FIG. 9B is a partial cross-sectional view for explaining an example of a state in which a bag according to the second embodiment is in use. FIG. 10 is a partial cross-sectional view for explaining an example of the second embodiment. FIGS. 11A and 11B are plan views for explaining an example of a position restricting member. FIGS. 12A and 12B are views for explaining an example of a joint portion between an intervening wall and a peripheral wall portion of a position restricting member. FIG. 13A is a plan view (top view) for explaining an example of the third embodiment. FIG. 13B is a front view for explaining an example of the third embodiment. FIG. 13C is a side view for explaining an example of the third embodiment. FIG. 14A is a cross-sectional view schematically showing a cross section taken along line DD in FIG. 13A. Fig. 14B is a partial cross-sectional view illustrating an example of a state in which the bag according to the third embodiment is used. Figs. 15A to 15C are partial cross-sectional views illustrating an example of the third embodiment.FIG. 16 is a partial cross-sectional view illustrating an example of a state in which the bag according to the third embodiment is used. FIGS. 17A and 17B are partial cross-sectional views illustrating an example of the third embodiment. FIGS. 18A, 18B, and 18C are partial cross-sectional views illustrating an example of the fourth embodiment. FIGS. 19A and 19B are partial cross-sectional views illustrating an example of the fourth embodiment. FIGS. 20A, 20B, and 20C are partial cross-sectional views illustrating an example of the fourth embodiment. FIG. 21A is a plan view (top view) illustrating an example of the fifth embodiment. FIG. 21B is a front view illustrating an example of the fifth embodiment. FIG. 21C is a side view illustrating an example of the fifth embodiment. FIG. 22A is a plan view (top view) illustrating an example of a state in which the bag according to the fifth embodiment is used. FIG. 22B is a front view illustrating an example of a state in which the bag according to the fifth embodiment is used. FIG. 22C is a side view illustrating an example of a state in which the bag according to the fifth embodiment is used. FIG. 23A is a plan view (top view) for explaining an example of the fifth embodiment. FIG. 23B is a front view for explaining an example of the fifth embodiment. FIG. 23C is a side view for explaining an example of the fifth embodiment. FIG. 24A is a plan view (top view) for explaining an example of a state in which a bag according to the fifth embodiment is used. FIG. 24B is a front view for explaining an example of a state in which a bag according to the fifth embodiment is used. FIG. 24C is a side view for explaining an example of a state in which a bag according to the fifth embodiment is used. FIG. 25A is a front view for explaining an example of the fifth embodiment. FIG. 25B is a perspective view for explaining an example of a state in which a bag according to the fifth embodiment is used. FIG. 26 is an exploded perspective view for explaining an example of the fifth embodiment. FIG. 27A is a plan view (top view) for explaining an example of an example of the seventh embodiment. FIG. 27B is a rear view for explaining an example of the seventh embodiment. FIG. 27C is a side view for explaining an example of the seventh embodiment. FIG. 28A is a perspective view for explaining an example of the seventh embodiment.FIG. 28B is a cross-sectional view schematically illustrating the cross section taken along line A1-A1 in FIG. 28A , and an enlarged cross-sectional view showing an enlarged portion of the dashed-dotted line XP1. FIG. 29A is a perspective view for explaining an example of the seventh embodiment. FIG. 29B is a cross-sectional view schematically illustrating the cross section taken along line A2-A2 in FIG. 29A . FIG. 30A is a perspective view for explaining an example of the seventh embodiment. FIG. 30B is a cross-sectional view schematically illustrating the cross section taken along line A3-A3 in FIG. 30A . FIG. 31 is a perspective view for explaining an example of the main body. FIG. 32 is a perspective view for explaining an example of the main body. FIG. 33A is a perspective view for explaining an example of the eighth embodiment. FIG. 33B is a perspective view for explaining a state in which a bent structure has been formed in the example of the eighth embodiment. FIG. 34A is a perspective view for explaining an example of the eighth embodiment. FIG. 34B is a perspective view for explaining a state in which a bent structure has been formed in the example of the eighth embodiment. FIG. 35A is a perspective view for explaining an example of the eighth embodiment. FIG. 35B is a perspective view illustrating a state in which a bent structure is formed for an example of the eighth embodiment. FIG. 36A is a perspective view illustrating an example of the seventh embodiment. FIG. 36B is a perspective view illustrating a state in which a bent structure is formed for an example of the seventh embodiment. FIG. 37B is a cross-sectional view schematically illustrating a cross section taken along line B1-B1 in FIG. 33A. FIG. 37B is a cross-sectional view schematically illustrating a cross section taken along line B2-B2 in FIG. 33A. FIG. 38A is a front view illustrating an example of the ninth embodiment. FIG. 38B is a perspective view illustrating an example of a state in which a bag according to the ninth embodiment is used. FIG. 39A is a plan view (top view) illustrating an example of a tenth embodiment. FIG. 39B is a front view illustrating an example of a tenth embodiment. FIG. 39C is a side view illustrating an example of a tenth embodiment. FIG. 40A is a plan view (top view) illustrating an example of a state in which a bag according to the tenth embodiment is used. Fig. 40B is a front view for explaining an example of a state in which the bag body according to the tenth embodiment is used. Fig. 40C is a side view for explaining an example of a state in which the bag body according to the tenth embodiment is used.FIG. 41A is a plan view (top view) for explaining one example of the tenth embodiment. FIG. 41B is a front view for explaining one example of the tenth embodiment. FIG. 41C is a side view for explaining one example of the tenth embodiment. FIG. 42A is a plan view (top view) for explaining one example of Modification 2 of the tenth embodiment. FIG. 42B is a front view for explaining one example of Modification 2 of the tenth embodiment. FIG. 42C is a side view for explaining one example of Modification 2 of the tenth embodiment. FIG. 43A is a plan view (top view) for explaining one example of a state of use of a bag body according to Modification 2 of the tenth embodiment. FIG. 43B is a front view for explaining one example of a state of use of a bag body according to Modification 2 of the tenth embodiment. FIG. 43C is a side view for explaining one example of a state of use of a bag body according to Modification 2 of the tenth embodiment. FIG. 44A is a plan view (top view) for explaining one example of Modification 2 of the tenth embodiment. 44B is a front view illustrating one example of Modification 2 of the tenth embodiment. FIG. 44C is a side view illustrating one example of Modification 2 of the tenth embodiment. FIG. 45A is a plan view (top view) illustrating one example of a state in use of a bag according to Modification 2 of the tenth embodiment. FIG. 45B is a front view illustrating one example of a state in use of a bag according to Modification 2 of the tenth embodiment. FIG. 45C is a side view illustrating one example of a state in use of a bag according to Modification 2 of the tenth embodiment. FIG. 46A is a perspective view illustrating one example of a state in use of a bag according to Modification 2 of the tenth embodiment. FIG. 46B is a perspective view illustrating one example of a state in use of a bag according to Modification 2 of the tenth embodiment. FIG. 47A is a front view illustrating one example of Modification 2 of the tenth embodiment. FIG. 47B is a perspective view illustrating one example of a state in use of a bag according to Modification 2 of the tenth embodiment. FIG. 5A is a view illustrating an example of a blank for forming a bag according to the second embodiment. Fig. 5B is a cross-sectional view schematically showing a state of a vertical cross section taken along line D1-D1 in Fig. 5A. Fig. 49 is a view for explaining an example of a blank material for forming the bag body according to the first embodiment.FIG. 50A is a diagram showing a portion of a bag according to the first embodiment and is a diagram for explaining an example of the bag. FIG. 50B is a cross-sectional view schematically showing a vertical cross section taken along line D2-D2 in FIG. 50A. FIG. 51A is a diagram showing a portion of a bag according to the first embodiment and is a diagram for explaining an example of the bag. FIG. 51B is a cross-sectional view schematically showing a vertical cross section taken along line D3-D3 in FIG. 51A. FIG. 52A is a diagram showing a portion of a container that can be placed in the bag according to the first embodiment. FIG. 52B is a cross-sectional view schematically showing a state in which the container of FIG. 52A is placed in the bag. FIGS. 53A and 53B are views showing a process of placing a position restricting member on a blank. FIG. 54A is a plan view (top view) for explaining an example of the eleventh embodiment. FIG. 54B is a front view for explaining an example of the eleventh embodiment. FIG. 54C is a diagram for explaining a small piece portion in an example of the eleventh embodiment. FIG. 54D is a cross-sectional view schematically illustrating a cross section corresponding to the cross section taken along line E1-E1 in FIG. 54B. FIG. 55A is a diagram illustrating the movement of a small piece portion in an example of the eleventh embodiment. FIG. 55B is a cross-sectional view schematically illustrating a cross section corresponding to the cross section taken along line E2-E2 in FIG. 55A. FIG. 55C is a side view illustrating a state in which the expansion of the opening of the bag body is restricted by a small piece portion in an example of the first embodiment. FIG. 55D is a cross-sectional view schematically illustrating the adhesive state between the small piece portion and the peripheral wall portion of the bag body in FIG. 55C. FIG. 56A is a cross-sectional view illustrating an example of a small piece portion and a releasable portion in Modification 1 of the eleventh embodiment. FIG. 56B is a cross-sectional view illustrating an example of a small piece portion and a releasable portion in Modification 2 of the eleventh embodiment. FIG. 57A is a plan view (top view) illustrating an example of Modification 3 of the eleventh embodiment. FIG. 57B is a front view illustrating an example of Modification 3 of the eleventh embodiment. Fig. 57C is a diagram for explaining a small piece portion in an example of modified example 3 of the eleventh embodiment. Fig. 57D is a cross-sectional view schematically showing the state of a cross section corresponding to the cross section taken along line E3-E3 in Fig. 57B. Fig. 58A is a diagram for explaining the movement of a small piece portion in an example of modified example 3 of the eleventh embodiment. Fig. 58B is a cross-sectional view schematically showing the state of a cross section corresponding to the cross section taken along line E4-E4 in Fig. 58A.FIG. 58C is a side view illustrating a state in which the expansion of the opening of the bag body is restricted by a small piece portion in an example of the first embodiment. FIG. 58D is a cross-sectional view illustrating a schematic adhesion state between the small piece portion and the peripheral wall portion of the bag body of FIG. 58C. FIG. 59A is a plan view (top view) illustrating an example of Modification 4 of the 11th embodiment. FIG. 59B is a front view illustrating an example of Modification 4 of the 11th embodiment. FIG. 59C is a diagram illustrating a small piece portion in an example of Modification 4 of the 11th embodiment. FIG. 59D is a cross-sectional view illustrating a schematic cross-section corresponding to the cross-section along line E5-E5 in FIG. 59B. FIG. 60A is a diagram illustrating the movement of the small piece portion in an example of Modification 4 of the 11th embodiment. FIG. 60B is a cross-sectional view illustrating a schematic cross-section corresponding to the cross-section along line E6-E6 in FIG. 60A. FIG. 60C is a side view illustrating a state in which the expansion of the opening of the bag body is restricted by a small piece portion in an example of the first embodiment. FIG. 60D is a cross-sectional view for schematically illustrating the adhesive state between the small piece portion and the peripheral wall portion of the bag body of FIG. 60C. FIG. 61A is a plan view (top view) for illustrating an example of Modification 5 of the 11th embodiment. FIG. 61B is a front view for illustrating an example of Modification 5 of the 11th embodiment. FIG. 61C is a front view for illustrating an example of Modification 5 of the 11th embodiment. FIG. 62A is a diagram for illustrating a tab in an example of Modification 6 of the 11th embodiment. FIG. 62B is a cross-sectional view schematically illustrating the state of a cross section corresponding to the E7-E7 line cross section in FIG. 62A. FIG. 63A is a diagram for illustrating a tab in an example of Modification 6 of the 11th embodiment. FIG. 63B is a cross-sectional view schematically illustrating the state of a cross section corresponding to the E8-E8 line cross section in FIG. 63A. FIG. 63C is a cross-sectional view for illustrating a tab in an example of Modification 6 of the 11th embodiment. FIG. 64A is a cross-sectional view for illustrating a receiving portion in an example of the sixth embodiment. Fig. 64B is a cross-sectional view schematically showing a state in which a container is accommodated in an example of the bag body of the sixth embodiment. Fig. 64C is a cross-sectional view for explaining a receiving portion in an example of the sixth embodiment. Fig. 65A is a plan view for explaining an example of the bag body according to the twelfth embodiment.FIG. 65B is a front view illustrating an example of a bag according to the twelfth embodiment. FIG. 65C is a view illustrating an example of an inner joining piece and a peelable portion provided on the bag according to the twelfth embodiment. FIG. 65D is a cross-sectional view schematically illustrating a cross section taken along line G1-G1 in FIG. 65B. FIG. 66A is a view illustrating an example of a state in which the inner joining piece provided on the bag according to the twelfth embodiment has been separated from the peelable portion. FIG. 66B is a cross-sectional view schematically illustrating a cross section taken along line G2-G2 in FIG. 66A. FIG. 65C is a side view illustrating an example of a bag according to the twelfth embodiment. FIG. 66D is a view illustrating an example of a state in which wall portions are adhered with the inner joining piece provided on the bag according to the twelfth embodiment. FIG. 67A is a plan view illustrating an example of a bag according to the thirteenth embodiment. FIG. 67B is a front view illustrating an example of a bag according to the thirteenth embodiment. Fig. 67C is a plan view illustrating an example of a blank for forming a folded structure constituting the bag according to the 13th embodiment. Figs. 68A, 68B, and 68C are plan views illustrating an example of a blank for forming a folded structure constituting the bag according to the 12th embodiment. Fig. 69A is a plan view illustrating an example of a bag according to the 13th embodiment. Fig. 69B is a front view illustrating an example of a bag according to the 13th embodiment. Fig. 69C is a plan view illustrating an example of a blank for forming a folded structure constituting the bag according to the 13th embodiment. Fig. 70A is a plan view illustrating an example of a bag according to the 14th embodiment. Fig. 70B is a front view illustrating an example of a bag according to the 14th embodiment. Fig. 70C is a bottom view illustrating an example of a bag according to the 14th embodiment. Fig. 71A is a plan view illustrating an example of a blank for forming the bag according to the 14th embodiment. Fig. 71B is a perspective view illustrating a process for manufacturing the bag, and is a perspective view illustrating one example of a cylindrical structure. Fig. 72A and Fig. 72B are perspective views illustrating a process for manufacturing the bag according to the fourteenth embodiment.FIG. 73A is a plan view illustrating an example of a blank for forming a bag according to the fourteenth embodiment. FIG. 73B is a bottom view illustrating an example of a bag according to the fourteenth embodiment. FIG. 74A is a plan view illustrating an example of a bag according to the fifteenth embodiment. FIG. 74B is a front view illustrating an example of a bag according to the fifteenth embodiment. FIG. 74C is a cross-sectional view schematically illustrating a cross section taken along line H1-H1 in FIG. 74A. FIG. 74D is a plan view illustrating an example of a bag according to the fifteenth embodiment. FIGS. 75A and 75B are plan views illustrating an example of a bag according to the fifteenth embodiment. FIGS. 76A and 76B are plan views illustrating an example of a bag according to the fifteenth embodiment. FIG. 77A is a plan view illustrating an example of a position restricting member. FIG. 77B is a plan view illustrating an example of a bag according to the fifteenth embodiment. FIG. 77C is a cross-sectional view schematically illustrating a cross section taken along line H2-H2 in FIG. 77B. FIG. 78A is a front view illustrating an example of a bag according to the sixteenth embodiment. FIG. 78B is a cross-sectional view schematically illustrating a cross section taken along line I1-I1 in FIG. 78A. FIG. 78C is a front view illustrating an example of a bag according to the sixteenth embodiment. FIGS. 75A and 75B are cross-sectional views illustrating an example of a bag according to the sixteenth embodiment. FIG. 80A is a front view illustrating an example of a bag according to the sixteenth embodiment. FIG. 80B is a cross-sectional view schematically illustrating a cross section taken along line I2-I2 in FIG. 80A. FIG. 80C is a cross-sectional view illustrating a state in which an example of a bag according to the sixteenth embodiment is in use. FIG. 81 is a plan view illustrating an example of a blank for a bag according to the sixteenth embodiment. FIGS. 82A and 82B are partial cross-sectional views illustrating an example of a bottom portion of a bag according to the sixteenth embodiment. FIG. 83A is a front view illustrating an example of a bag according to the seventeenth embodiment. Fig. 82B is a partial cross-sectional view illustrating an example of a bottom portion of a bag according to the seventeenth embodiment. Figs. 84A and 84B are partial cross-sectional views illustrating an example of a bottom portion of a bag according to the seventeenth embodiment. Fig. 85A is a perspective view illustrating an example of a bag according to the eighteenth embodiment.85B is a plan view illustrating an example of a bag according to the eighteenth embodiment. FIG. 86A is a perspective view illustrating an example of a bag according to the eighteenth embodiment. FIG. 86B is a plan view illustrating an example of a bag according to the eighteenth embodiment. FIG. 87A to FIG. 87C are plan views illustrating an example of a bag according to the eighteenth embodiment. FIG. 88A is a view illustrating an example of a gusset portion joint. FIG. 88B is a cross-sectional view illustrating an example of a gusset portion joint. FIG. 88B is a cross-sectional view illustrating an example of a gusset portion joint in use. FIG. 89A to FIG. 89B are plan views illustrating an example of a bag according to the eighteenth embodiment. FIG. 90A is a cross-sectional view illustrating an example of a gusset portion joint. FIG. 90B is a cross-sectional view illustrating an example of a gusset portion joint in use. FIG. 91A is a cross-sectional view illustrating an example of a gusset portion joint. FIG. 91B is a cross-sectional view illustrating an example of a gusset portion joint in use. Fig. 92A is a cross-sectional view illustrating one example of a gusset portion joint. Fig. 92B is a cross-sectional view illustrating one example of a state in which the gusset portion joint is used. Fig. 93 is a perspective view illustrating one example of a bag according to the eighteenth embodiment. Fig. 94 is a perspective view illustrating one example of a bag according to the eighteenth embodiment. Fig. 95 is a perspective view illustrating one example of a bag according to the eighteenth embodiment. Fig. 96 is a perspective view illustrating one example of a bag according to the eighteenth embodiment. Fig. 97A is a perspective view illustrating one example of a bag according to the nineteenth embodiment. Fig. 97B is a plan view illustrating one example of a bag according to the nineteenth embodiment. Fig. 98A is a perspective view illustrating one example of a bag according to the twentieth embodiment. Fig. 98B is a plan view illustrating one example of a bag according to the twentieth embodiment. Fig. 99A is a front view illustrating one example of a bag according to the twenty-first embodiment. Figure 99B is a side view illustrating one example of a bag body according to the 21st embodiment, and an enlarged partial cross-sectional view illustrating the cross section of the handle portion when the portions XSS1 and XSS2 surrounded by dashed lines are cut vertically through the sheet-penetrating portion.99C is a plan view for explaining one example of a bag according to the 21st embodiment. FIGS. 100A to 100D are partial cross-sectional views for schematically explaining a handle portion of one example of a bag according to the 21st embodiment. FIGS. 101A to 101C are partial cross-sectional views for schematically explaining a handle portion of one example of a bag according to the 21st embodiment. FIGS. 102A to 102C are partial cross-sectional views for schematically explaining a handle portion of one example of a bag according to the 21st embodiment. FIG. 103A is a front view for explaining one example of a bag according to the 21st embodiment. FIG. 103B is a plan view for explaining one example of a bag according to the 21st embodiment. FIG. 104A is a front view for explaining one example of a bag according to the 21st embodiment. FIG. 104B is a partial cross-sectional view for schematically explaining a handle portion of one example of a bag according to the 21st embodiment. FIG. 104C is a partial cross-sectional view for schematically explaining a handle portion of one example of a bag according to the 21st embodiment. 105A and 105B are partial cross-sectional views for schematically illustrating a handle portion of an example of a bag according to the 21st embodiment. FIG. 106A is a front view for illustrating an example of a bag according to the 21st embodiment. FIG. 106C is a partial cross-sectional view for schematically illustrating a handle portion of an example of a bag according to the 21st embodiment. FIG. 106D is a partial cross-sectional view for schematically illustrating a handle portion of an example of a bag according to the 21st embodiment. FIG. 107A is a partial cross-sectional view for schematically illustrating a handle portion of an example of a bag according to the 21st embodiment. FIG. 107B is a partial cross-sectional view for schematically illustrating a handle portion of an example of a bag according to the 21st embodiment. FIG. 107C is a side view for illustrating an example of a bag according to the 21st embodiment. FIG. 108A is a front view for illustrating an example of a bag according to the 22nd embodiment. Figure 108B is a side view illustrating one example of a bag body according to the 22nd embodiment, and an enlarged partial cross-sectional view illustrating the cross section of the handle portion, cut vertically through the sheet-penetrating portion at the portions XSS3 and XSS4 surrounded by dashed lines.FIG. 108C is a plan view illustrating an example of a bag according to the 22nd embodiment. FIGS. 109A and 109B are front views illustrating an example of a bag according to the 22nd embodiment. FIG. 110A is a front view illustrating an example of a bag according to the 23rd embodiment. FIG. 110B is a side view illustrating an example of a bag according to the 23rd embodiment, and a partially enlarged cross-sectional view illustrating a cross section of the handle portion obtained by cutting portions XSS5 and XSS6 surrounded by dashed lines in the vertical direction so as to pass through the sheet-penetrating portion. FIG. 110C is a plan view illustrating an example of a bag according to the 23rd embodiment. FIG. 111A is a front view illustrating an example of a bag according to the 17th embodiment. FIG. 111B is a plan view illustrating an example of a bag according to the 17th embodiment. FIGS. 112A and 112B are views illustrating a manufacturing process of a bag according to the 27th embodiment. FIG. 113A is a front view illustrating an example of a bag according to the 25th embodiment. FIG. 113B is a side view illustrating an example of a bag according to the 25th embodiment, and a partially enlarged cross-sectional view illustrating a cross section of a handle portion obtained by cutting portions XSS7 and XSS7 surrounded by dashed lines in the vertical direction so as to pass through the sheet-penetrating hole. FIG. 113C is a plan view illustrating an example of a bag according to the 25th embodiment. FIG. 114A is a front view illustrating an example of a bag according to the 26th embodiment. FIG. 114B is a side view illustrating an example of a bag according to the 26th embodiment. FIG. 114C is a partially enlarged plan view illustrating a main portion of an example of a bag according to the 26th embodiment. FIG. 114D is a view illustrating the state of the inner surface side of a wall portion including a handle installation portion in an example of a bag according to the 26th embodiment. FIG. 114E is a schematic cross-sectional view illustrating the state of a cross section taken along line J1-J1 in FIG. 114D. FIGS. 115A to 115B are views illustrating a manufacturing process of a bag according to the 28th embodiment. Fig. 116 is a view for explaining an example of a blank for forming the bag according to the 28th embodiment. Fig. 117 is a partial perspective view for explaining an example of a position regulating member used in the bag according to the 29th embodiment.FIG. 118 is a partial perspective view illustrating an example of a position restricting member used in the bag according to the 30th embodiment. FIG. 119 is a partial perspective view illustrating an example of a position restricting member used in the bag according to the 31st embodiment. FIG. 120A is a diagram illustrating an example of a concave-convex roller used in an apparatus for manufacturing the bag according to the 31st embodiment. FIG. 120B is a cross-sectional view illustrating an example of using the concave-convex roller in the manufacturing process of the bag according to the 31st embodiment. FIG. 121A is a diagram illustrating an example of a blank for forming the bag according to the 31st embodiment. FIG. 121B is a schematic cross-sectional view illustrating the state of the cross section taken along line J2-J2 in FIG. 121A. FIG. 121C is a diagram illustrating an example of a blank for forming the bag according to the 31st embodiment. FIG. 122A is a front view illustrating an example of a bag according to the 32nd embodiment when the bag has the first structure. FIG. 122B is a diagram illustrating an example of the state of the lower end of the bag when the arrow DE1 in FIG. 122A is the line of sight. 122C is a diagram illustrating an example of the state of the upper end side of the bag when the arrow DE2 in FIG. 122A is the line of sight. FIG. 122C is a side view illustrating an example of the bag according to the 32nd embodiment when the bag has the first structure. FIG. 123A is a front view illustrating an example of the bag according to the 32nd embodiment when the bag has the second structure. FIG. 123B is a diagram illustrating the state of the upper end of the bag according to the 32nd embodiment when the bag has the second structure. FIG. 123C is a side view illustrating an example of the bag according to the 32nd embodiment when the bag has the second structure. FIG. 124 is a perspective view illustrating a state in which the region XS surrounded by the dashed line in FIG. 123C has been folded from the first folding axis to the third folding axis. FIG. 125A is a front view illustrating an example of the bag according to the 33rd embodiment. FIG. 125B is a partial perspective view illustrating a main portion of the bag according to the 33rd embodiment. FIG. 125C is a diagram for explaining one example of a state in which the bag body according to the thirty-third embodiment is suspended from a suspension support.Fig. 126A is a front view for explaining one example of a bag according to the 33rd embodiment. Fig. 126B is a side view for explaining one example of a bag according to the 33rd embodiment. Figs. 127A to 127C are partial front views for explaining main parts of one example of a bag according to the 33rd embodiment. Fig. 128A is a front view for explaining one example of a bag according to the 33rd embodiment. Fig. 128B is a plan view for explaining one example of a bag according to the 33rd embodiment.134 is a perspective view illustrating an example of a bag according to the 36th embodiment. FIG. 135 is a perspective view illustrating an example of a bag according to the 36th embodiment. FIG. 136A to FIG. 136C are perspective views illustrating an example of a bag according to the 37th embodiment. FIG. 137 is a perspective view illustrating an example of a bag according to the 37th embodiment. FIG. 138A to FIG. 138C are perspective views illustrating an example of a bag according to the 37th embodiment. 146A to 146D are diagrams illustrating an example of a bag according to the 40th embodiment; FIG. 148 is a perspective view illustrating an example of a bag according to the 41st embodiment; FIG. 149A is a partial cross-sectional view illustrating a handle portion in a modified example of the bag according to the 21st embodiment; FIG. 149B is a partial cross-sectional view for schematically explaining a handle portion in a modified example of the bag body according to the twenty-first embodiment.Fig. 149C is a side view for explaining one example of a bag according to the 21st embodiment. Fig. 150A is a perspective view for explaining one example of a bag according to the 42nd embodiment. Fig. 150B is a side view for explaining one example of a bag according to the 42nd embodiment. Fig. 150C is a plan view for explaining one example of a bag according to the 42nd embodiment. Fig. 151A is a perspective view for explaining one example of a bag according to the 42nd embodiment. Fig. 151B is a plan view for explaining one example of an opening of the bag according to the 42nd embodiment. Fig. 151C is a perspective view for explaining one example of a bag according to the 42nd embodiment. Fig. 152A is a perspective view for explaining one example of a bag according to the 43rd embodiment. Fig. 152B is a side view for explaining one example of a bag according to the 43rd embodiment. Fig. 152C is a plan view for explaining one example of a bag according to the 43rd embodiment. Fig. 153A is a perspective view for explaining one example of a bag according to the 43rd embodiment. Fig. 153B is a plan view illustrating an example of an opening of the bag according to the 43rd embodiment. Fig. 153C is a perspective view illustrating an example of a bag according to the 43rd embodiment. Fig. 154A is a perspective view illustrating an example of a bag according to the 42nd embodiment. Fig. 154C is a perspective view illustrating an example of a bag according to the 42nd embodiment. Fig. 155A is a perspective view illustrating an example of a bag according to the 42nd embodiment. Fig. 155B is a side view illustrating an example of the vicinity of the upper end of the peripheral wall of the bag according to the 42nd embodiment. Fig. 155C is a perspective view illustrating an example of a bag according to the 42nd embodiment. Fig. 156A is a perspective view illustrating an example of a bag according to the 45th embodiment. Fig. 156B is a side view illustrating an example of a bag according to the 45th embodiment. Fig. 156C is a plan view illustrating an example of a bag according to the 45th embodiment. Fig. 157A is a perspective view illustrating an example of a bag according to the 45th embodiment. Fig. 157B is a perspective view for explaining one example of a bag according to the 45th embodiment. Fig. 158A is a perspective view for explaining one example of a bag according to the 45th embodiment.158B is a side view illustrating an example of a bag according to the 45th embodiment. FIG. 158C is a plan view illustrating an example of a bag according to the 45th embodiment. FIG. 159A is a perspective view illustrating an example of a bag according to the 45th embodiment. FIG. 159B is a back view illustrating an example of the vicinity of the upper end of a peripheral wall portion of a bag according to the 45th embodiment. FIG. 160A is a perspective view illustrating an example of a bag according to the 45th embodiment. FIG. 160B is a perspective view illustrating an example of a bag according to the 45th embodiment. FIG. 161A is a perspective view illustrating an example of a bag according to the 45th embodiment. FIG. 161B is a plan view illustrating an example of a bag according to the 45th embodiment. FIG. 162A is a perspective view illustrating an example of a bag according to the 45th embodiment. FIG. 162B is a plan view illustrating an example of an opening of a bag according to the 45th embodiment. FIG. 162C is a back view illustrating an example of the vicinity of the upper end of a peripheral wall portion of a bag according to the 45th embodiment. FIG. 163A is a partial perspective view illustrating an example of a bag according to the 45th embodiment. FIG. 163B is a partial cross-sectional view illustrating a vertical cross section taken along line K1-K1 in FIG. 163A. FIG. 163C is a partial cross-sectional view illustrating an example of a bag according to the 45th embodiment. FIG. 162D is a front view illustrating an example of the vicinity of the upper end of the peripheral wall portion of the bag according to the 45th embodiment. FIG. 164A is a perspective view illustrating an example of a bag according to the 45th embodiment. FIG. 164B is a partial perspective view illustrating an example of a bag according to the 45th embodiment. FIG. 164C is a partial cross-sectional view illustrating a vertical cross section taken along line K1-K1 in FIG. 163A. FIGS. 165A, 165B, and 165C are partial cross-sectional views illustrating an example of a bag according to the 45th embodiment. 166A, 166B, 166C, 166D, 166E, and 166F are views for explaining an example of a weakened portion of a bag according to the 45th embodiment. Figures 167A and 167B are perspective views for explaining an example of a bag according to the 46th embodiment. Figure 168 is a perspective view for explaining an example of a bag according to the 46th embodiment.FIG. 169A is a perspective view illustrating an example of a bag according to the 44th embodiment. FIG. 169B is a side view illustrating an example of a bag according to the 44th embodiment. FIG. 170A is a perspective view illustrating an example of a bag according to the 44th embodiment. FIG. 171 is a perspective view illustrating an example of a bag according to the 47th embodiment. FIG. 172 is a perspective view illustrating an example of a bag according to the 47th embodiment. FIG. 173 is a perspective view illustrating an example of a bag according to the 47th embodiment. FIG. 174 is a perspective view illustrating an example of a bag according to the 47th embodiment. FIG. 175 is a perspective view illustrating an example of a bag according to the 47th embodiment. FIG. 176 is a perspective view illustrating an example of a bag according to the 47th embodiment. FIGS. 177A and 177B are plan views illustrating an example of a position restricting member. FIGS. 178A to 178D are partial side views illustrating an example of a bag according to the 43rd embodiment. FIG. 179A is a perspective view illustrating an example of a bag according to the 48th embodiment. Fig. 179B is a side view for explaining an example of a bag according to the 48th embodiment. Fig. 179C is a plan view for explaining an example of a bag according to the 48th embodiment. Fig. 180A is a perspective view for explaining an example of a bag according to the 48th embodiment. Fig. 180B is a perspective view for explaining an example of a bag according to the 48th embodiment. Fig. 181A is a perspective view for explaining an example of a bag according to the 48th embodiment. Fig. 181B is a side view for explaining an example of a bag according to the 48th embodiment. Fig. 181C is a plan view for explaining an example of a bag according to the 48th embodiment. Fig. 182A is a perspective view for explaining an example of a bag according to the 48th embodiment. Fig. 182B is a side view for explaining an example of a bag according to the 48th embodiment. Fig. 182C is a plan view for explaining an example of a bag according to the 48th embodiment. Fig. 183A is a perspective view for explaining an example of a bag according to the 48th embodiment. Figure 183B is a side view for explaining one example of a bag body according to the 48th embodiment.Fig. 183C is a plan view for explaining one example of a bag according to the 48th embodiment. Fig. 184A is a perspective view for explaining one example of a bag according to the 48th embodiment. Fig. 184B is a side view for explaining one example of a bag according to the 48th embodiment. Fig. 184C is a plan view for explaining one example of a bag according to the 48th embodiment. Fig. 185A is a perspective view for explaining one example of a bag according to the 48th embodiment. Fig. 185B is a side view for explaining one example of a bag according to the 48th embodiment. Fig. 185C is a plan view for explaining one example of a bag according to the 48th embodiment. Fig. 186 is a perspective view for explaining one example of a bag according to the 49th embodiment. Fig. 187 is a perspective view for explaining one example of a bag according to the 49th embodiment. Fig. 188 is a perspective view for explaining one example of a bag according to the 49th embodiment. Fig. 189 is a perspective view for explaining one example of a bag according to the 49th embodiment.

[0011] The bag according to the present invention will be described as an example of a bag used to store food and beverages. However, the use of the bag is not limited to storing food and beverages, and the bag can also be used to store items other than food and beverages. The type of food and beverage stored in the bag according to the present invention is not limited, and includes various types of food and beverages, such as beverages stored in cups such as coffee or carbonated drinks, food stored in containers of a specific size and shape such as fries, and food wrapped in paper such as hamburgers.

[0012] In the following, we will explain as an example a case where the contents defined as the item stored in the bag are a container (cup) containing a beverage, etc., or a container of a predetermined size and shape containing food, etc.

[0013] In this specification and drawings, components having substantially the same features even in different embodiments are indicated by the same reference numerals, and detailed descriptions of those components are omitted.

[0014] The following description is a preferred example of the present invention, and the content of the present invention is not limited to these embodiments. Furthermore, in the following description, directions such as front-back, left-right, and up-down, as well as directions on a horizontal plane, are shown for the sake of convenience, but the content of the present invention is not limited to these directions. In the example of FIG. 1 , the Z-axis direction is defined as the up-down direction (the upper side is the +Z direction, and the lower side is the −Z direction), the X-axis direction and the Y-axis direction are defined as the directions along the X-axis and Y-axis, which are perpendicular to each other and defined on a plane normal to the Z-axis direction, and the XY plane, which is the plane formed by the X-axis and Y-axis, is defined as a horizontal plane. The X-axis, Y-axis, and Z-axis are similarly defined in the other figures in FIG. 1 (FIGS. 2 to 82). Furthermore, the relative magnitude ratios of sizes and the like shown in each of FIGS. 1 to 82 are described for convenience and do not limit the actual magnitude ratios.

[0015] [1 First Embodiment] [1-1 Configuration] The bag body 10 according to the first embodiment has a main body 20. The main body 20 has a space 23 and an opening 24. The space 23 is formed so as to be able to accommodate a container (container 200 in Figures 2, 3, etc.) as the contents. The opening 24 is formed so as to allow the container 200 (contents) to be inserted into the accommodation space (space 23).

[0016] (Main body) The main body 20 includes a peripheral wall 21 and a bottom 22. The peripheral wall 21 is a wall connected to the bottom 22 at the periphery of the bottom 22. In the main body 20, an accommodation space is formed as a space surrounded by the peripheral wall 21 connected to the bottom 22 at the periphery of the bottom 22. Note that, hereinafter, the accommodation space will be referred to as a space 23.

[0017] (Material of the Main Body) The material of the main body 20 is not particularly limited, and examples thereof include paper-based materials, woven fabrics, nonwoven fabrics, resins, and metals. The nonwoven fabric that can be used as the material of the main body 20 is not particularly limited. The nonwoven fabric is defined in JIS L0222 as "a nonwoven fabric in which fibers are oriented in one direction or randomly and are bonded by entanglement and / or fusion and / or adhesion, excluding paper, woven fabrics, knitted fabrics, tufted fabrics, and felted felts." Examples of nonwoven fabrics include spunbonded nonwoven fabrics, chemically bonded nonwoven fabrics, airlaid nonwoven fabrics, needlepunched nonwoven fabrics, spunlace nonwoven fabrics, thermally bonded nonwoven fabrics, resin-bonded nonwoven fabrics, and nanofiber nonwoven fabrics, as well as meltblown nonwoven fabrics. Nonwoven fabrics preferably contain pulp fibers as the primary fiber component, but are not limited thereto; non-pulp fibers such as synthetic fibers may also be used. Regarding nonwoven fabric sheets, "pulp fibers as the primary fiber component" refers to nonwoven fabric sheets containing 50% or more pulp fibers by mass, preferably 70% or more by mass, and more preferably 80% or more by mass. Non-pulp fibers include natural fibers such as wool, silk, and cotton; polyesters such as nylon, vinylon, and polyethylene terephthalate; polyacrylics; polyolefins such as polyethylene and polypropylene; synthetic fibers such as polyurethane; recycled fibers such as rayon; and semi-synthetic fibers such as acetate. Synthetic fibers are preferred. The resin that can be used as the material for the main body 20 is not particularly limited; polyolefin resins such as polyethylene and polyethylene terephthalate resins may be used as appropriate. Among the various resins listed above, preferred resins include biodegradable resins that pose little environmental pollution.Examples of biodegradable resins include microbially produced biodegradable resins such as polyhydroxyalkanoate (PHA) and PHA-based copolymers; natural product-based biodegradable resins such as cellulose derivatives such as cellulose acetate and starch-based resins made primarily from starch such as corn starch; lactic acid-based resins such as polylactic acid (PLA), polylactic acid / polycaprolactone copolymers, and polylactic acid / polyether copolymers; succinate-based resins such as polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), and polyethylene terephthalate succinate (PETS); chemically synthesized biodegradable resins such as polycaprolactone and polyvinyl alcohol (PVA); and other biodegradable resins such as polyglycolic acid (PGA), polybutylene adipate / terephthalate, and biodegradable polyolefins (trade names: Biorecover, Cra Drop, etc.).

[0018] The material of the main body 20 is not particularly limited, but from the viewpoints of moisture absorption and reducing environmental impact, it is preferable that the main body 20 be made of a paper-based material containing fibers. In the examples shown in Figures 1A to 1C, the main body 20 is made of a paper-based material. Examples of paper-based materials include so-called paper, which is made by agglutinating plant fibers and other fibers, as well as chemical fiber paper, synthetic paper, waterproof paper, coated paper, substitute paper, parchment, wool paper, glass fiber paper, stone paper, and ceramic paper. The paper-based material may be recycled or non-recycled paper. However, as long as the main body 20 contains a paper-based material, it is not prohibited to use a non-paper-based material in combination with the paper-based material. Examples of non-paper-based materials include cloth-based materials (woven or non-woven materials), resins, metals, etc. Examples of non-woven materials include air-laid sheets formed by bonding pulverized pulp that has been stacked by airflow into a sheet, pulp-based materials, and non-woven fabrics made of natural or synthetic fibers. The main body 20 may be made of a combination of paper and non-paper materials. Examples of resin materials that can be used as non-paper materials include resins made of synthetic resins, natural resins, and the like. An example of a combination of paper and resin materials is a main body 20 having a structure in which a resin sheet is laminated on at least one side of a paper material. When metal is used as the non-paper material, examples include a metal sheet or a metal net (a metal net-like structural member). Examples of metal sheets include aluminum foil. An example of a combination of paper and metal is a main body 20 having a structure in which a metal sheet or a metal net is laminated on at least one side of a paper material. When combining a paper material with a non-paper material such as a resin material or a metal material as in these examples, the non-paper material may be laminated on only one side of the paper material, or on both sides of the paper material. However, as mentioned above, from the perspective of reducing environmental impact, it is preferable that the main body 20 does not include a resin sheet, i.e., is made solely of paper material.

[0019] When the main body 20 is formed from a sheet containing a paper-based material, the paper-based sheet that forms the main body 20 is preferably waterproof. For example, in the manufacturing process of such a sheet containing a paper-based material (e.g., specifically, when a process of making raw fibers (e.g., pulp fibers) is performed), predetermined amounts of various additives, such as a lubrication strength enhancer, a sizing agent (e.g., alkyl ketene dimer (AKD)), or cationic starch, are added to the raw fibers of the sheet. In addition to the lubrication strength enhancer and sizing agent, calcium carbonate may also be used as the additive. In this case, various additives, such as a lubrication strength enhancer, sizing agent, cationic starch, and calcium carbonate, may be added to the raw fibers of the sheet. The amounts of these additives are set to an amount sufficient to enhance waterproofness. This allows for a sheet containing a paper-based material with enhanced waterproofness to be obtained. The additives listed above are merely examples, and other additives may be added, or the additives may be replaced with other substances that have equivalent functions to those listed above.

[0020] When the main body 20 is made of a sheet having a paper-based material, the main body 20 may be made of a sheet made of a paper-based material with a layer formed on the surface thereof by a coating method or the like to enhance waterproofing.

[0021] Furthermore, paper may be used for the main body 20. There are no limitations on the type of paper that can be used to form the main body 20, and it may be a paper-based material using bleached pulp fibers or a paper-based material using unbleached pulp fibers. For example, kraft paper may be used as the material for the main body 20.

[0022] Examples of paper-based materials constituting the bag body of the present invention include so-called paper, which is obtained by weaving a slurry of fiber raw material onto a screen, drying or pressing it to dry it, and making it into a sheet, and so-called air-laid sheets, which are obtained by stacking spread fiber raw material such as ground pulp obtained by pulverizing a raw material sheet made of pulp-based fibers or the like in a grinder, using an air flow to stack the fibers of the stack, and fixing them together with a binder, as well as sheets stacked together of multiple sheets of these. The paper-based material may be one made only of pulp or one containing non-pulp fibers such as natural fibers, synthetic fibers, or recycled fibers, but it is preferable that the paper contains 50% by mass or more of pulp, more preferably 70% by mass or more, and even more preferably 80% by mass or more, with 100% by mass of pulp being particularly preferred. The paper-based material can be a composite material with synthetic or natural resin films or nonwoven fabrics, wood-based materials such as wood foil, or even aluminum foil, but when used as a composite material, the composite material as a whole preferably contains 50% by mass or more of pulp, and more preferably contains 80% by mass or more of pulp. The higher the pulp content, the more easily the paper-based material will biodegrade, which is preferable.

[0023] Examples of pulp include wood pulp, non-wood pulp, synthetic pulp, and recycled paper pulp. More specifically, mechanical pulp (MP) such as groundwood pulp (GP), stone ground pulp (SGP), refiner ground pulp (RGP), pressure groundwood pulp (PGW), thermomechanical pulp (TMP), chemi-thermomechanical pulp (CTMP), and bleached chemi-thermomechanical pulp (BCTMP), chemical-mechanical pulp (CGP), semi-chemical pulp (SCP), bleached hardwood kraft pulp (LBKP), and bleached softwood kraft pulp (LBKP) are also included. One or several types of pulp can be appropriately selected and used from among kraft pulp (KP) such as NBKP; chemical pulp (CP) such as soda pulp (AP), sulfite pulp (SP) and dissolving pulp (DP); synthetic pulp made from nylon, rayon, polyester, polyvinyl alcohol (PVA) and the like; tallow pulp (TP); rag pulp made from cotton, flax, hemp, jute, Manila hemp, ramie and the like; stalk pulp such as straw pulp, esparto pulp, bagasse pulp, bamboo pulp and kenaf pulp; and auxiliary pulp such as bast pulp. The pulp can be softwood pulp such as red pine, todomatsu, Yezo pine, Douglas fir, hemlock, spruce, etc.; hardwood pulp such as beech, oak, birch, eucalyptus, poplar, alder, etc.; wood pulp such as a mixture of softwood pulp and hardwood pulp; non-wood pulp such as kenaf bagasse pulp, bamboo pulp, cereal pulp, straw pulp, abaca pulp, cotton pulp; recycled paper pulp, etc. Softwood pulp has longer fibers than hardwood pulp, so paper materials using pulp with long fiber length such as softwood pulp have a higher degree of entanglement of the fibers; and pulp obtained by pulverizing a raw material sheet using softwood pulp, etc., also has longer fibers than pulverized pulp obtained by pulverizing a raw material sheet made of hardwood pulp, so that the entanglement of the fibers improves the strength of the paper material.

[0024] Furthermore, the paper material may have a resin coating layer on at least one side. When using a paper material having a coating layer, it is preferable to use it so that the coating layer is positioned at least on the inner surface side of the container. The coating layer can be formed by a resin film or a coating layer. When forming the coating layer by adhering a resin film, the film may be a single-layer film or a multi-layer film, and may be formed by overlapping single-layer or multi-layer films. Furthermore, the coating layer may be formed by applying not only one type of coating agent, but also two or more types of coating agents applied in overlapping layers.

[0025] Examples of resins that form the coating layer include polystyrene, polyethylene, polypropylene, polyethylene terephthalate, polyurethane, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, cyanoacrylate, epoxy resin, polyacrylic acid resin, polymethacrylic acid resin, nylon, polycarbonate; polycaprolactone, polyhydroxyalkanoate, polyhydroxybutyrate, polylactic acid, starch-based resins such as esterified starch, cellulose acetate, polyethylene succinate, polyvinyl alcohol, polyglycolic acid, chitosan / cellulose / starch, poly(hydroxybutyrate / hydroxyhexanoate), poly(caprolactone / butylene succinate), polybutylene succinate, poly(butylene succinate / adipate), poly Examples of suitable resins include naturally degradable resins and mixtures of naturally degradable resins such as poly(butylene succinate / carbonate), poly(ethylene terephthalate / succinate), poly(butylene adipate / terephthalate), and poly(tetramethylene adipate / terephthalate); naturally degradable biomass resins and mixtures of naturally degradable biomass resins; fluororesins, silicone resins, ultraviolet-curable resins, copolymers of the monomers that make up the above resins, such as ethylene-vinyl acetate copolymers, ethylene-vinyl alcohol copolymers, ethylene-propylene copolymers, ethylene-propylene-butadiene copolymers, acrylic-styrene copolymers, styrene-butadiene copolymers, and acrylonitrile-butadiene-styrene copolymers, natural resins, paraffin, gelatin, cellophane, and polymethylpentene. The coating layer is preferably formed from a naturally degradable resin, a naturally degradable biomass resin, or a natural resin, or from these.

[0026] Examples of the naturally degradable resin include natural resins, naturally degradable plastics, biomass plastics, etc. Examples of the naturally degradable plastics and biomass plastics include naturally degradable resins and mixtures of naturally degradable resins such as polycaprolactone, polyhydroxyalkanoate, polyhydroxybutyrate, polylactic acid, starch-based resins such as esterified starch, cellulose acetate, polyethylene succinate, polyvinyl alcohol, polyglycolic acid, chitosan / cellulose / starch, poly(hydroxybutyrate / hydroxyhexanoate), poly(caprolactone / butylene succinate), polybutylene succinate, poly(butylene succinate / adipate), poly(butylene succinate / carbonate), poly(ethylene terephthalate / succinate), poly(butylene adipate / terephthalate), and poly(tetramethylene adipate / terephthalate).

[0027] The naturally degradable resin may also contain additives listed on the positive list of the Japan BioPlastics Association, such as lubricants such as stearic acid amide, fatty acid esters, fatty acid metal salts, fatty acids, fats and oils, and glycerin fatty acid esters; stabilizers such as triphenyl phosphate, phthalic anhydride, tris(dibutyl phosphate), and acetic anhydride; inorganic materials such as titanium dioxide, kaolin, mica, bentonite, diatomaceous earth, magnesium oxide, aluminum silica sand, calcium carbonate, calcium hydroxide, and shell powder; surfactants such as higher fatty acid amides, nonionic surfactants, and glycerin fatty acid esters; blowing agents such as citric acid, sodium bicarbonate, and butane; and other materials such as antistatic agents and hot melt adhesives.

[0028] Furthermore, "naturally degradable" refers to the property of being decomposed by microorganisms, ultraviolet rays, changes in weather, etc. in the air, soil, or water, thereby reducing the environmental load. When the main body 20 is formed from a resin material, examples of the resin material that can be used include polyester (polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polycarbonate (PC), etc.), polyolefin (polyethylene (PE), polypropylene (PP), etc.), polyamide (nylon-6, nylon-66, etc.), polyacrylonitrile (PAN), polyimide (PI), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polymethyl methacrylate (PMMA), polyethersulfone (PES), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), ethylene-propylene copolymer (EP), unstretched polypropylene (CPP), biaxially oriented nylon (ON), ethylene-olefin copolymer, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), and ethylene-vinyl acetate copolymer (EVA).

[0029] The resin material constituting the bag body 10 is preferably one or more materials selected from olefin-based resins, biomass-based resins, and biodegradable resins. Examples of unstretched olefin-based resins include propylene-based resins. Examples of propylene-based resins include propylene homopolymers, propylene-α-olefin random copolymers, and propylene-α-olefin block copolymers. Examples of polyethylene resins include polyethylene resins such as linear low-density polyethylene (LLDPE), linear medium-density polyethylene (LMDPE), linear high-density polyethylene (LHDPE), low-density polyethylene (LDPE), medium-density polyethylene (MDPE), and high-density polyethylene (HDPE); ethylene copolymers such as ethylene-butene-rubber copolymer (EBR), ethylene-propylene-rubber copolymer (EPR), ethylene-vinyl acetate copolymer (EVA), ethylene-methyl methacrylate copolymer (EMMA), ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl acrylate (EMA) copolymer, ethylene-ethyl acrylate-maleic anhydride copolymer (E-EA-MAH), ethylene-acrylic acid copolymer (EAA), and ethylene-methacrylic acid copolymer (EMAA); and ionomers of ethylene-acrylic acid copolymer and ionomers of ethylene-methacrylic acid copolymer. These may be used alone or in combination of two or more.

[0030] Examples of biomass-based resins include plant-derived biomass polyethylene. Examples of plant-derived biomass polyethylene include polyethylene resins produced from plant-derived ethylene, such as sugarcane, corn, and beets. Examples of biomass polyethylene include linear low-density polyethylene (LLDPE), linear medium-density polyethylene (LMDPE), linear high-density polyethylene (LHDPE), low-density polyethylene (LDPE), medium-density polyethylene (MDPE), and high-density polyethylene (HDPE). These may be used alone or in combination. Other examples include tall oil, a by-product of pulp production, and biomass polypropylene and biomass polyethylene made from waste cooking oil.

[0031] Examples of biodegradable resins include polyethylene succinate (PES), polybutylene succinate (PBS), polylactic acid (PLA), polyglycolic acid (PGA), polyhydroxybutyrate (PHB), polycaprolactone (PCL), a mixture or copolymer of polycaprolactone and polybutylene succinate (PCL / PBS), a copolymer of polyhydroxybutyrate and polyhydroxyvalerate (PHB / PHV), a mixture or copolymer of polybutylene succinate and polybutylene adipate (PBS / PBA), a copolymer of polyethylene terephthalate and polyethylene succinate (PET / PES), a copolymer of polybutylene terephthalate and polybutylene adipate (PBT / PBA), etc. These resin materials may be used alone or in combination.

[0032] (Peripheral Wall Portion) The peripheral wall portion 21 rises from the periphery of the bottom portion 22. The peripheral wall portion 21 is connected to the bottom portion 22 at the periphery of the bottom portion 22. In the example shown in FIG. 1 and other figures, the peripheral wall portion 21 is formed continuously from the periphery of the bottom portion 22. The peripheral wall portion 21 is configured in a cylindrical shape, and a space surrounded by the bottom portion 22 and the peripheral wall portion 21, which will be described later, forms a space portion 23. The phrase "peripheral wall portion connected to the bottom portion at the periphery of the bottom portion" means that the peripheral wall portion 21 is continuous with the periphery of the bottom portion 22 in the state of the bag body 10. The case where the peripheral wall portion 21 is continuous with the periphery of the bottom portion 22 includes both a case where the bottom portion 22 and the peripheral wall portion 21 are formed by folding a single blank material (a case where the peripheral wall portion 21 is formed continuously with the periphery of the bottom portion 22) and a case where the bottom portion 22 and the peripheral wall portion 21 are formed by joining different blank materials. That is, the phrase "a peripheral wall portion continuous with the periphery of the bottom portion" indicates that the bottom portion 22 and the peripheral wall portion 21 form a connected structure.

[0033] 1, the peripheral wall portion 21 has a pair of opposing wall surface portions 25 (main wall surface portions) and a pair of opposing side wall surface portions 26. In the peripheral wall portion 21, each of the wall surface portions 25, 25 is connected to the side wall surface portions 26, 26 at the side edge of the wall surface portion 25.

[0034] (Bottom) The bottom 22 forms the bottom surface of the main body 20. The configuration of the bottom 22 is not particularly limited as long as it is capable of preventing the contents stored in the space 23 from falling out downward. In the example of FIG. 1, the bottom 22 is configured as a portion having a folding structure 27 in which a portion of the blank 500 corresponding to the bottom 22 (bottom-corresponding portion 501) is folded, as shown in FIGS. 5A to 5C. Note that FIG. 5A is a diagram illustrating the folding of the blank 500 when forming the folding structure 27. Also, the examples of FIGS. 5B and 5C are examples of the bottom 22 and are not intended to limit the structure of the bottom 22. The bottom 22 may be flat, have a finely textured structure (such as an embossed structure), or have a gusseted structure (a gusset).

[0035] (Corner) The main body may have at least one corner 28. The corner 28 is formed on the inner surface 21A of the peripheral wall 21. In the example shown in Fig. 1 etc., the corner 28 is formed so as to extend from the bottom 22 toward the opening. The corner 28 is formed at the boundary between the wall surface 25 and the side wall surface 26.

[0036] (Main Body Gusset Portion) When the pair of wall portions 25 of the main body 20 is a first wall portion 25A and a second wall portion 25B, the pair of side wall portions 26 preferably includes a main body gusset portion 29 that changes the distance between the first wall portion 25A and the second wall portion 25B. In this case, the shape of the main body gusset portion 29 can be configured such that the distance between the first wall portion 25A and the second wall portion 25B is small (referred to as a contracted state) when the bag body 10 is unused. Furthermore, the shape of the main body gusset portion 29 can be configured such that the distance between the first wall portion 25A and the second wall portion 25B is large (referred to as an expanded state) when the bag body 10 is used. In this way, the bag body 10 can be configured to be in the expanded state or the contracted state as needed, allowing it to be stored in a small space when not in use and ensuring the space portion 23 for storing contents when in use.

[0037] (Position Restriction Member) The main body 20 is provided with a position restriction member 30. One position restriction member 30 may be provided, or multiple position restriction members 30 may be provided as shown in FIG. 6A. In the example of FIG. 6A, two position restriction members 30 are provided, and each of them can independently change the state of the restriction wall portion 31 between a first shape state ST1 and a second shape state ST2 (movement of the movable portion of the restriction wall portion 31 in the direction of arrow T). For ease of explanation, FIG. 6 omits the thickness of each member and the main body gusset portion 29. This also applies to FIGS. 4 and 7.

[0038] The position restricting member 30 is joined to at least the inner surface of the peripheral wall portion 21. In the examples of FIGS. 1 and 2 , etc., a joint margin 32 is formed at the side end of the restricting wall portion 31 described later to be joined to the peripheral wall portion 21, and the position restricting member 30 is joined to the inner surface of the peripheral wall portion 21 at the joint margin 32. The examples of FIGS. 1 and 2 are merely examples, and the formation of the joint margin 32 may be avoided. For example, as shown in FIG. 11B etc., the position restricting member 30 may be formed in a shape in which an intervening wall 50 described later in a second embodiment and the restricting wall portion 31 are connected in an annular shape, and the position restricting member 30 may be joined to the inner surface of the peripheral wall portion 21 at the intervening wall 50. Furthermore, when the peripheral wall portion 21 has a wall surface portion 25 and a side wall surface portion 26 as shown in FIGS. 1 and 2 , etc., the position restricting member 30 is preferably joined to the wall surface portion 25 and the side wall surface portion 26. In this case, when the corner portion 28 is formed at the boundary between the wall surface portion 25 and the side wall surface portion 26, the position restricting member 30 is configured to cover at least a portion of the corner portion 28 when the restricting wall portion 31 is in the second shape state ST2. This makes it difficult for the restricting wall portion 31 of the position restricting member 30 to return from the first shape state ST1 to the second shape state ST2 after being deformed from the second shape state ST2 to the first shape state ST1 as shown in FIG. 2A . The portion of the restricting wall portion 31 that is joined to another member or portion, such as the joint margin portion 32, is referred to as the fixed portion, and the portion of the restricting wall portion 31 excluding the fixed portion is referred to as the movable portion. The movable portion can move between a position close to the fixed portion (first position) and a position spaced a predetermined distance from the fixed portion (second position). The further the movable part is moved away from the fixed part (second position), the easier it is for the first shape state to be formed, and a small space portion 33 (described later) large enough to accommodate a container (such as a paper cup or potato container) can be formed.

[0039] (Restriction Wall Portion) The position restriction member 30 has a restriction wall portion 31. The restriction wall portion 31 restricts the movement of the contents inside the space portion 23 (more preferably, the movement of the contents in the horizontal direction in the small space portion 33).

[0040] In the position restricting member 30, the restricting wall portion 31 is configured to be capable of at least forming a first shape state ST1 in which the facing surface 34 forms a concave surface, and a second shape state ST2 different from the first shape state. The term "facing surface 34" is defined as follows. That is, when the contents (container 200 in FIGS. 2B, 3B, etc.) are placed in the space 23 so that their movement is restricted by the restricting wall portion 31, the surface of the restricting wall portion 31 facing the contents is referred to as the "facing surface 34." The term "when the contents are placed in the space so that their movement is restricted by the restricting wall portion" refers to when the bag body 10 is positioned with the bottom surface facing downward and the opening facing upward, and the horizontal movement of the contents placed in the space is restricted. The state in which movement is restricted by the restricting wall portion is realized when the restricting wall portion forms the second shape state ST2 when the contents are placed in the space.

[0041] The size of the restricting wall portion may be determined according to the size of the contents. For example, if the contents are the container 200 having a container body in which a beverage is poured, the size of the restricting wall portion may be determined according to the outer diameter and outer shape of the container body 210.

[0042] Furthermore, it is preferable that the restricting wall portion 31 be formed up to near the upper end of the container body. By forming it in this manner, for example, when a container containing a beverage is held in the small space portion 33, it is easy to form a state in which the restricting wall portion 31 contacts most of the outer peripheral surface of the container. This allows the restricting wall portion 31 to function as a sleeve, making it easier to obtain an insulating effect, improving the container's ability to keep the container warm or cold, and enabling the temperature of the beverage in the container to be maintained at a good temperature for a long period of time. When the container 200 is placed in the small space portion 33, in the example shown in FIG. 3B , the container 200 is configured so that the container body 210 directly faces the restricting wall portion 31. This is just one example; as shown in FIG. 52A , a sleeve 41 may be fitted to the outer peripheral surface of the container body 210 of the container 200, and when the container 200 is placed in the bag 10, the container 200 with the sleeve 41 may be placed in the small space portion 33 as shown in FIG. 52B . 52A shows a sleeve 41 formed in a cylindrical shape that matches the shape of the outer periphery of the container body 210, but this is just one example, and the sleeve 41 is not limited to this shape.

[0043] (Positional Relationship Between Corners and Restricting Walls) Furthermore, as shown in the example of FIG. 1A , if the main body 20 has corners 28, it is preferable that the position restricting member 30 covers at least a portion of at least one of the corners 28 when the restricting wall 31 is in the second shape state ST2. In this case, a small space 33 can be formed in a position that includes the corner of the main body. Furthermore, in this case, the small space 33 formed in a state surrounded by the fixed part and the movable part when the movable part moves from the first position to the second position can be made large, making it easier to hold a relatively large content.

[0044] (First Shape State and Second Shape State) The first shape state ST1 of the restricting wall portion 31 is not particularly limited as long as the opposing surface 34 forms a concave surface. In the example of FIG. 2A , the concave surface is V-shaped (V-shaped in cross section). The example of FIG. 2A is merely an example, and the concave surface may be U-shaped. The first shape state ST1, in which the opposing surface 34 forms a concave surface, includes a case where the entire opposing surface 34 is concave, as well as a case where only a portion of the opposing surface 34 is concave. However, from the viewpoint of ensuring a sufficient size of the small space portion 33, it is preferable that the first shape state ST1 be a case where substantially the entire opposing surface 34 (the area of ​​the opposing surface 34 corresponding to the movable portion described above) is concave. Whether or not the facing surface 34 forms a concave surface can be determined by selecting two different points on the facing surface 34, using a line passing through the two points as a reference (reference line), and determining whether or not the facing surface 34 exists in a portion away from the peripheral wall portion 21 than the reference line in a plan view of the bag body 10. If there is at least one reference line such that the facing surface 34 exists in a portion away from the peripheral wall portion 21 than the reference line, it can be determined that the "portion of the facing surface 34 located on the side away from the peripheral wall portion 21" forms a concave surface.

[0045] The second shape state ST2 of the restricting wall portion 31 is not particularly limited as long as it is a state different from the first shape state ST1. For example, the second shape state ST2 can be a state in which the facing surface 34 forms a convex surface. An example of a state in which the facing surface 34 forms a convex surface is a state in which the convex surface is mountain-shaped (mountain-shaped in cross section), as shown in the example of FIG. 1A. Note that the example of FIG. 1A is merely an example, and the convex surface may be a surface resembling the outer surface of a pillar, a spherical surface, or the like. Note that the second shape state ST2 is preferably a state in which the restricting wall portion 31 forms a convex surface on the facing surface so as to conform to the inner surface 21A of the peripheral wall portion 21. When the restricting wall portion 31 is arranged to cover the corner portion 28, the second shape state ST2 can be defined as a state in which the shape of the facing surface 34 of the restricting wall portion 31 is a convex shape corresponding to the shape of the inner surface of the corner portion 28. Furthermore, the concept of the second shape state ST2 being a state different from the first shape state ST1 includes a state in which the facing surface 34 is a flat surface.

[0046] (Material of Position Restriction Member) The material of the position restriction member 30 is not particularly limited. The material of the position restriction member may be a paper-based material, a woven fabric, a nonwoven fabric, a resin, or a metal. The various materials that can be used for the position restriction member 30, such as paper-based materials, woven fabric, nonwoven fabric, resin, and metal, may be the same as the various materials described above as materials that can be used to form the main body 20. From the viewpoints of ease of handling and reducing environmental impact, the position restriction member 30 is preferably made of a paper-based material. Furthermore, from the viewpoint of reducing the risk of a decrease in the strength of the position restriction member 30 when the position restriction member 30 absorbs liquid, the position restriction member 30 is preferably waterproof. Therefore, it is more preferable that the position restriction member 30 be made of a paper-based material and waterproof. If the content stored in the bag 10 is a container containing liquid, the strength of the position restriction member 30 is less likely to decrease even if the liquid contained in the container adheres to the position restriction member 30.

[0047] The position restricting member 30 preferably has water absorption properties. The position restricting member 30 preferably has water absorption properties that can prevent moisture from leaking to the outside (i.e., has waterproof properties). From this perspective, the position restricting member 30 preferably has a paper-based material.

[0048] (Positional Relationship Between Contents and Position Restricting Member) When the bag 10 is unused, the position restricting member 30 provided on the inner surface of the main body 20 of the bag 10 may have the restricting wall portion 31 in the second shape state ST2. When the bag 10 is in use, for example, a user touches the restricting wall portion 31 to change the restricting wall portion 31 from the second shape state ST2 to the first shape state ST1. Then, the contents are inserted into the space 23 of the bag 10 so that the contents face the facing surface 34. For example, when the contents are a container containing a liquid, the contents are inserted from the opening of the bag 10 downward into the space 23 so that the outer peripheral surface of the container body faces the facing surface 34.

[0049] (Small Space Portion) In this specification, the "space portion surrounded by the main body and the position restricting member" of the space portion 23 of the bag body and "the space portion intended for inserting a container so that the container faces the opposing surface with the restricting wall portion in the first shape state" is referred to as the small space portion 33. The portions that form the small space portion 33 (the restricting wall portion 31 and the peripheral wall portion 21) can function as a holding portion that restricts the movement of the contents of the container or the like and holds the contents. In this way, according to the present invention, the peripheral wall portion 21 can function to restrict the movement of the contents.

[0050] As described above, when a container that will serve as the contents is placed in space 23, it is preferable that a gap exists between at least a part of the upper end of restriction wall 31 and the outer peripheral surface of the container. By having a gap between at least a part of the upper end of restriction wall 31 and the outer peripheral surface of the container, even if liquid or the like spills from the container, the spilled liquid can be made to collide with restriction wall 31, making it less likely that the liquid will spill outside restriction wall 31. Therefore, when an item other than a container is stored in the bag, it is possible to prevent the liquid from falling on the upper surface of the item other than the container.

[0051] (Surface Condition of Position Restriction Member) The position restriction member 30 may have a smooth surface without textured finish, or may have an embossed textured surface. By having the position restriction member 30 have a textured surface, a higher heat insulating effect can be easily obtained.

[0052] (Blank) In the bag shown in the example of Fig. 1A, the main body 20 is formed from a single blank 500 as shown in Fig. 4 and Fig. 5. Fig. 4 and Fig. 5 are diagrams for explaining the manufacturing process of the bag 10. As shown in Fig. 4A, the blank 500 may be determined depending on the shape and manufacturing method of the main body 20. For example, if the main body 20 is a sheet that contains a paper-based material and has waterproof properties, the sheet that forms the blank 500 may be a sheet obtained by papermaking raw fibers that contain (or consist of) a paper-based material and to which predetermined amounts of the various additives described above (wet strength additive, AKD, calcium carbonate, cationized starch, etc.) have been added. Note that, depending on the application and function, all or some of the additives described above may be added to the raw fibers. In the example shown in FIG. 4, the blank 500 is formed from a rectangular sheet. When manufacturing the bag body 10, a position restricting member 30 is placed at a predetermined position on the blank 500, as shown in FIG. 4B. As shown in FIG. 4C, the rectangular blank 500 is bent in the direction of arrow F1 at a position corresponding to the corner 28 (position PU in FIG. 4), and adhesive margin corresponding portions 550 on the side end portions of the blank 500 are adhered. Note that, hereinafter, the side end portions of the blank 500 are referred to as side edge portions. In the following description, the adhesive portion formed by adhering the adhesive margin corresponding portion 550 is referred to as the blank material adhesive portion 551. At this time, a cylindrical structure 530 is formed. The blank material 500 is previously provided with a peripheral wall corresponding portion 502, which is a portion corresponding to the peripheral wall portion 21, and a bottom corresponding portion 501, which is a portion corresponding to the bottom portion 22. As shown in FIG. 5A , the bottom corresponding portion 501, which is a portion of the cylindrical structure 530 that corresponds to the bottom portion 22, is bent inward. In this example, portion 501A of bottom corresponding portion 501 is bent inward (toward the center of the cylindrical structure (in the direction of arrow F2)). Furthermore, portion 501B is bent inward (toward the center of the cylindrical structure (in the direction of arrow F2)). At this time, the overlapping portions of portion 501A and portion 501B and the overlapping portions of two portions 501B are bonded together with an adhesive or the like. In this case, a folding structure 27 is formed in bottom 22. Furthermore, a reinforcing sheet material or the like may be further attached to bottom 22.The portion 501A is a portion of the bottom corresponding portion 501 that extends below the portion corresponding to the side wall surface portion 26. The portion 501B is a portion of the bottom corresponding portion 501 that extends below the portion corresponding to the wall surface portion 25.

[0053] When the overlapping portions of the portions 501A and 501B that form the bottom 22 or the overlapping portions of the two portions 501B are bonded with an adhesive or the like, it is preferable that a heat treatment be applied to a predetermined portion including at least a portion of the overlapping portion. During this heat treatment, the overlapping portions of the portions 501A and 501B or the overlapping portions of the two portions 501B may be bonded with a predetermined structure, such as an adhesive bonded structure or an adhesive-free bonded structure. When the heat treatment is applied to the bottom 22, it is preferable that the bottom 22 be pressurized. In the above example, the heat treatment is performed when the main body 20 is formed (when the bottom 22 is formed), but the timing of the heat treatment is not limited thereto. The heat treatment may be performed after the main body 20 is formed or before the main body 20 is formed. However, if the heat treatment is performed before the main body 20 is formed, it is preferable that the main body 20 is formed before the adhesive softened by the heat treatment hardens. The heat treatment can also be applied to the manufacturing of the bags according to all the embodiments from the second embodiment onwards.

[0054] [1-2 Actions and Effects] According to the bag body 10 of the first embodiment, the operation of placing a cup holder other than the bag body 10 to stabilize the position of the container can be omitted, and the container can be held simply and stably with a simple operation.

[0055] Furthermore, when the restricting wall portion 31 of the bag body 10 is in the second shape state ST2, if the position restricting member 30 is configured to cover at least a portion of at least one of the corner portions 28, a small space portion 33 can be formed at a position including the corner portion 28 of the main body 20. In this case, as described above, the small space portion 33 formed by the fixed portion and the movable portion when the movable portion moves from the first position to the second position can be made large, making it easier to hold relatively large contents. It is generally considered that containers 200 containing juice, coffee, etc. are heavier than foods such as bread. When such a container 200 is placed in the small space portion 33, conventional bags tend to cause the container 200 to be centered at the bottom of the bag, causing the bottom of the bag to protrude downward and deform, leading to deformation of the bag. In this case, if bread, etc. is also placed in the bag in addition to the container 200, there is a problem that the bread, etc., is also likely to lose its shape. In view of these problems, the bag body 10 according to the first embodiment can maintain the state in which the container 200 is positioned at the corner 28 in the space 23. Therefore, the shape of the bottom 22 of the bag body 10 is less likely to collapse, and the occurrence of the problems described above can be suppressed.

[0056] [1-3 Modifications] (Modification 1) In the bag according to the first embodiment, a waterproof layer may be formed on the upper surface of the bottom 22 (Modification 1). When a waterproof layer is provided on the upper surface of the bottom as in Modification 1, even if a container containing liquid is stored inside the bag 10 and liquid is spilled inside the bag 10, the liquid can be more reliably prevented from seeping into the bottom 22 and wetting the underside of the bottom 22 of the bag 10, or from tearing the bottom 22 and leaking the liquid from the bottom 22. An example of a waterproof layer is a waterproof sheet 37, as shown in FIG. 5D , laid on the upper surface of the bottom 22. The configuration in which a waterproof layer is provided on the upper surface of the bottom 22 may be achieved by laying the waterproof sheet 37 on the upper surface of the bottom 22 after the main body 20 of the bag 10 is formed. Alternatively, a configuration in which the waterproof sheet 37 is provided on the upper surface of the bottom 22 may be realized by laying a waterproof sheet 37 on a portion of the blank 500 that is intended to become the bottom 22, i.e., on a portion corresponding to the bottom 22, and folding the blank 500 with the waterproof sheet 37 provided thereon to form the main body 20. Alternatively, a configuration in which a waterproof layer is provided on the upper surface of the bottom 22 may be realized by applying waterproof ink to the portion of the blank 500 that corresponds to the bottom 22, and then curing the formed coating to form a waterproof ink cured layer, and then folding the blank 500 with the waterproof sheet provided thereon to form the main body 20.

[0057] (Variation 2) In the bag body 10 according to the first embodiment, at least one position restricting member 30 may be positioned so that the restricting wall portion 31 does not cover the corner portion 28 when the restricting wall portion 31 is in the second shape state ST2, as shown in FIG. 6B (Variation 2). For such a position restricting member 30, a sufficiently large small space portion 33 can be formed by appropriately combining the shape deformation of the bag body 10 and the shape deformation of the position restricting member 30, as shown in FIG. 6C. However, from the viewpoint of making it difficult for the restricting wall portion 31 to return to the second shape state ST2 after being set to the first shape state ST1 during use of the bag body 10 before a container is inserted into the bag body 10, it is preferable that the position restricting member 30 be positioned so as to cover the position of the corner portion 28 when the restricting wall portion 31 is in the second shape state ST2.

[0058] (Variation 3) As shown in Figures 7A and 7B, the bag body 10 according to the first embodiment may be configured such that one restricting wall 31 is provided and the joining margins 32 are formed at multiple locations, thereby forming multiple small spaces 33. When the member forming the restricting wall 31 is arranged so as to surround the inner surface of the peripheral wall 21 of the main body 20 as shown in Figure 7B, a strip-shaped sheet for forming the position restricting member 30 is placed on the blank material 500 as shown in Figure 49. Then, the joining margins 32 are formed according to the positions where the small spaces 33 are to be formed. Aside from using the blank material 500 having the joining margins 32 arranged in this manner, the bag body 10 can be obtained by folding at predetermined positions as described above.

[0059] (Variation 4) In the bag according to the first embodiment, as shown in Figures 7C and 7D, the size of the small space 33 is not limited to a size corresponding to the size of one container. The size of the small space 33 may be a size that allows multiple containers to be placed therein. In the example shown in Figures 7C and 7D, with the position restriction member 30 provided as shown in Figure 7C, two containers can be placed in the small space 33 as shown in Figure 7D.

[0060] (Modification 5) In the bag body according to the first embodiment, as shown in FIGS. 50A and 50B, the position restricting member 30 may be provided with a restricting wall weakening portion 40 on the restricting wall portion 31.

[0061] (Restriction Wall Weakened Portion) The restriction wall weakened portion 40 may be a half-cut portion as shown in Figures 50A and 50B. The restriction wall weakened portion 40 may also be a perforated portion in which through portions and non-through portions are formed alternately along a predetermined direction (not shown). Figure 50A is a diagram showing an example of a position restricting member 30 in the bag body 10, and Figure 50B is a diagram schematically showing the state of a vertical cross section taken along line D2-D2 in Figure 50A.

[0062] By forming the regulating wall weakened portion 40, when a container 200 or the like is placed in the small space portion 33 and then the container 200 is removed from the bag body 10, the regulating wall weakened portion 40 can be broken, making it easy to remove the container 200.

[0063] (Modification 6) In the bag body according to the first embodiment, as shown in FIGS. 51A and 51B, the position restricting member 30 may be provided with a streak-like uneven portion 42 on the restricting wall portion 31.

[0064] (Striated Concave-Convex Portion) The striated concave-convex portion 42 may be formed by embossing as shown in FIGS. 51A and 51B. The concave structures 42A and convex structures 42B constituting the striated concave-convex portion 42 are formed to extend in the vertical direction, but this is just one example. The concave structures 42A and convex structures 42B of the striated concave-convex portion 42 may also extend in the horizontal direction. The concave structures 42A and convex structures 42B of the striated concave-convex portion 42 may also extend in an oblique direction. FIG. 51A is a diagram showing an example of a position restricting member 30 in the bag body 10, and FIG. 51B is a diagram schematically showing a vertical cross section taken along line D3-D3 in FIG. 51A.

[0065] The formation of the streak-like uneven portion 42 makes it easier to impart flexibility to the regulating wall portion 31, making it possible to more smoothly place the container 200 etc. in the small space portion 33, and also when removing the container 200 from the bag body 10, the regulating wall portion 31 is given a slight stretch, making it easier to remove the container 200.

[0066] 8 and 9, in the bag body 10 according to the second embodiment, the position restricting member 30 has a restricting wall portion 31 and an intervening wall 50. The bag body 10 according to the second embodiment has the same configuration as that of the first embodiment, except that the position restricting member 30 is provided with the intervening wall 50 described above. That is, the bag body 10 according to the second embodiment includes the intervening wall 50 in the position restricting member 30 of the bag body 10 according to the first embodiment. Therefore, in the description of the second embodiment, detailed description of the configuration other than the intervening wall 50 of the position restricting member 30 will be omitted.

[0067] (Intermediate Wall) As described above, the position restricting member 30 has the intermediary wall 50. In a plan view of the bag body 10 (when the line of sight is in the up-down direction), the intermediary wall 50 is located between the peripheral wall 21 of the main body 10 and the restricting wall 31 of the position restricting member 30. The intermediary wall 50 is joined to at least the inner surface of the peripheral wall 21. More specifically, the intermediary wall 50 is attached to the peripheral wall 21 in a state where it is in face-to-face contact with the inner surface of the peripheral wall 21, thereby adhering the intermediary wall 50 to the peripheral wall 21. If the portion where the intermediary wall 50 and the peripheral wall 21 are adhered is referred to as the intermediary wall adhesive portion 51, the intermediary wall adhesive portion 51 is preferably formed partially in the region where the intermediary wall 50 and the peripheral wall 21 face each other. Furthermore, it is preferable that a gap space 52 be formed between the intermediary wall 50 and the peripheral wall 21. The formation of the gap space 52 allows a layer of gas, such as air, to exist between the intervening wall 50 and the peripheral wall 21, which is expected to improve the heat retention in the space formed between the intervening wall 50 and the peripheral wall 21 in the positioning member 30. In the second embodiment, the space formed between the intervening wall 50 and the peripheral wall 21 in the positioning member 30 serves as the small space 33. In the examples shown in FIGS. 8 , 9A , and 9B , the intervening wall adhesive portions 51 are formed in the shape of multiple strips spaced apart in the vertical direction of the peripheral wall 21. However, the examples shown in FIGS. 8 and 9 are only examples of the intervening wall adhesive portions 51. The intervening wall adhesive portions 15 may be formed over the entire area where the intervening wall 50 and the peripheral wall 21 face each other. The layout of the intervening wall adhesive portions 51 may also be appropriately set as shown in FIGS. 11A and 11B . For example, in Fig. 11A, the layout of the intervening wall adhesive portions 51 is a layout in which the intervening wall adhesive portions 51 are formed in the shape of multiple bands spaced apart in the up-down direction of the peripheral wall portion 21 shown in Fig. 9A and Fig. 9B. In Fig. 11B, the layout of the intervening wall adhesive portions 51 is a diagonal lattice layout in which the intervening wall adhesive portions 51 are formed in the shape of multiple bands that intersect diagonally.

[0068] In the second embodiment, when the restricting wall portion 31 is in the second shape state ST2, as shown in Fig. 10, the lower end of the restricting wall portion 31 is preferably located above the lower end of the intervening wall 50. With this configuration, the container can be placed in the small space portion 33 with the position restricting member 30 firmly attached to the main body 20 by the intervening wall 50, and therefore, the position restricting member 30 is expected to improve the structural reinforcement effect of the position restricting member 30 and its vicinity when the container is placed in the small space portion 33. Note that, from the viewpoint of further improving the structural reinforcement effect, it is preferable that the lower end 50A of the intervening wall 50 be in contact with the bottom portion 22.

[0069] (Blank) In the bag body 10 shown in the second embodiment, a position restricting member 30 is disposed at a predetermined position on a blank 500 for forming the main body 20. The position restricting member 30 is fixed to the blank 500 by an intervening wall 50. Apart from using the blank 500 with the position restricting member 30 disposed thereon in this manner, the bag body 10 can be obtained by folding the blank 500 at a predetermined position as described in the first embodiment.

[0070] [2-2 Actions and Effects] According to the bag body 10 of the second embodiment, the same effects as those of the first embodiment can be obtained.

[0071] [2-3 Modifications] (Modification 1) According to the bag body 10 of the second embodiment, the position restricting member 30 is not limited to the case where the restricting wall portion 31 and the intervening wall 50 are bonded to each other at their side edges as shown in FIG. 11A . As shown in FIG. 11B , the position restricting member 30 may be formed by continuously and integrally forming the restricting wall portion 31 and the intervening wall 50. In the example of FIG. 11B , the restricting wall portion 31 and the intervening wall 50 are continuously and integrally formed, thereby forming the position restricting member 30 in an annular shape. Note that in FIG. 11A , the joint margin portion 32 of the restricting wall portion 31 is the portion that is joined to the intervening wall 50. When the position restricting member 30 is formed in an annular shape, the bag body 10 can be manufactured as follows. As shown in FIG. 48A , the position restricting member 30 is placed at a predetermined position on a blank 500 from which the main body 20 is formed. The position restricting member 30 is fixed to the blank 500 by the intervening wall 50. 48B , the intervening wall 50 may be fixed to the blank 500 in a partial widthwise region thereof, and an intervening wall adhesive portion 51 may be formed in a partial widthwise region of the intervening wall 50. In this manner, the blank 500 having the position restricting member 30 disposed thereon is used, and the bag 10 can be obtained by folding the blank 500 at a predetermined position as described in the first embodiment. When the position restricting member 30 is formed in an annular shape, a method for disposing the position restricting member 30 at a predetermined position on the blank 500 for forming the main body 20 may involve rolling the sheet for forming the position restricting member 30 into an annular shape and joining the overlapping ends by adhesive or the like to form an annular body, and then disposing the annular body at a predetermined position on the blank 500, as shown in FIG. Also, as shown in Figure 53B, a sheet for forming the position control member 30 can be rolled into a ring shape and the ends can be overlapped to create an overlapping body PB in which adhesive or the like is placed on at least one surface of the overlapping portion (the state before the overlapping portions are joined with adhesive), and the overlapping body PB can be placed in a predetermined position on the blank material 500, and then the overlapping body PB can be adhered to the main body 20 with adhesive 51A that forms the intervening wall adhesive portion 51.In the above description, the annular body (an annular body formed by rolling a sheet for forming the position restricting member 30 into a ring shape and joining the overlapping ends by adhesive or the like) is disposed on the blank material 500. However, the annular body may be disposed after the blank material 500 is formed into a bag shape. That is, a main body 20 may be manufactured without the position restricting member 30, and the annular body may be attached to the inner surface of the peripheral wall 21 of such a main body 20. The annular body can be attached by attaching an adhesive, double-sided tape, or the like (hereinafter simply referred to as an adhesive or the like) to a predetermined position on the outer periphery of the annular body in advance, and then disposing the annular body at a predetermined position on the inner surface of the peripheral wall 21 so that the adhesive or the like is interposed between the annular body and the peripheral wall 21.

[0072] (Modification 2) According to the bag body 10 of the second embodiment, the configuration shown in the modification of the first embodiment may be provided.

[0073] [3 Third Embodiment] [3-1 Configuration] In a bag according to the third embodiment, the position restricting member 30 has a restricting wall 31 and an inner bottom 80, or as shown in FIG. 13 , a restricting wall 31, an intervening wall 50, and an inner bottom 80. The bag 10 according to the third embodiment has the same configuration as the first or second embodiment except that the position restricting member 30 is provided with the inner bottom 80. That is, the bag 10 according to the third embodiment has a configuration in which the position restricting member 30 in the bag 10 according to the first or second embodiment is provided with the inner bottom 80. Therefore, in the description of the third embodiment, detailed description of the configuration other than the inner bottom 80 of the position restricting member 30 will be omitted.

[0074] (Inner bottom portion) As shown in Fig. 13, the position restricting member 30 has an inner bottom portion 80. Fig. 13 shows an example of a case where the bag body 10 according to the third embodiment is configured such that the position restricting member 30 in the bag body 10 of the second embodiment has a bottom portion 22. The inner bottom portion 80 is sometimes referred to as a small bottom portion because it is a portion smaller than the bottom portion 22.

[0075] The inner bottom 80 may be separate from the restricting wall 31, but is preferably formed so that the inner bottom 80 and the restricting wall 31 are continuously connected. The same applies to the continuity between the inner bottom 80 and the intervening wall 50. In the example of Fig. 13, the inner bottom 80 is formed so that it is continuous with the intervening wall 50 at the position of the lower end of the intervening wall 50 and is continuous with the restricting wall 31 at the position of the lower end of the restricting wall 31. The inner bottom 80 supports the contents (e.g., the container 200) inside the space 23 (inside the small space 33). When the contents are a container (a container whose contents are a liquid such as a beverage), "supporting the contents" means that when the regulating wall portion 31 is deformed from the second shape state ST2 to the first shape state ST1 as shown in Figures 14A and 14B and the container 200 is placed in the small space portion 33, the inner bottom portion 80 is placed on the underside of the container 200, and includes both a case where the contents are supported from the underside by the inner bottom portion 80 alone and a case where the contents are supported from the underside by the inner bottom portion 80 and the bottom portion 22.

[0076] 15B and 15C , when the restricting wall portion 31 of the position restricting member 30 is in the first shape state ST1, at least a part of the inner bottom portion 80 preferably has an inclined surface 81 that slopes downward from a boundary position TR between the inner bottom portion 80 and the restricting wall portion 31 in a direction approaching the peripheral wall portion 21 (in FIGS. 15B and 15C , a direction approaching the intervening wall 50). The inclined surface 81 formed on the upper surface side of the inner bottom portion 80 may be formed over the entire area from the boundary position between the inner bottom portion 80 and the restricting wall portion 31 to a boundary position TB between the inner bottom portion 80 and the intervening wall 50, or may be formed in a region from the boundary position between the inner bottom portion 80 and the restricting wall portion 31 to a predetermined position on the inner bottom portion 80. From the viewpoint of obtaining the effect of the inclined surface 81 while firmly supporting the contents of the container, etc. with the inner bottom 80, it is preferable that the inclined surface 81 be formed in the area from the boundary position between the inner bottom 80 and the regulating wall portion 31 to a predetermined position on the inner bottom 80.

[0077] When the restricting wall 31 of the position restricting member 30 is in the first shape state ST1 and the upper surface of the inner bottom 80 forms the inclined surface 81 as described above, when a container as a content is placed in the small space 33, the container 200 is slightly inclined toward the peripheral wall 21 of the main body 20, as shown in Fig. 16, and the upper end of the container is likely to be pressed against the inner surface of the peripheral wall 21 (the side in the direction of arrow FE), which makes it easy to form a gap 35 between the outer peripheral surface of the container main body and the upper end of the restricting wall 31. When the gap 35 is formed between the outer peripheral surface of the container main body and the upper end of the restricting wall 31, even if the container content (e.g., a liquid such as a beverage) leaks from the container main body, the container content is likely to fall into the gap 35 between the restricting wall 31 and the container main body, and is less likely to spill beyond the restricting wall 31 and fall outward.

[0078] (Waterproofness) Furthermore, from the viewpoint of preventing "the spilled liquid from reaching the inner bottom, causing the inner bottom to break and reducing the support function of the container" when liquid (such as a beverage contained in the container) spills into the gap 35 between the restricting wall 313 and the container body, it is preferable that the inner bottom 80 be waterproof. From the viewpoint of preventing the position restricting member 30 from breaking due to liquid seeping into the position restricting member 30, it is preferable that the entire position restricting member be waterproof.

[0079] (Gudset) As shown in Figures 14A and 15A, the inner bottom preferably has a gusset 82 (bottom gusset). In this case, the inner bottom 80 has a folding structure 83, which allows the restricting wall 31 of the position restricting member 30 to smoothly transition from the first shape state ST1 to the second shape state ST2 and from the second shape state ST2 to the first shape state ST1. As described above, when forming an inclined surface 81 on the upper surface of the inner bottom 80, as shown in Figure 15A, when the restricting wall 31 is in the second shape state, it is preferable that the lower end of the restricting wall 31 be located above the lower end of the intermediate wall 50. In this case, when the restricting wall 31 is transitioned from the second shape state ST2 to the first shape state ST1, the lower end of the restricting wall 31 is located above the lower end of the intermediate wall 50, thereby more reliably forming the inclined surface 81 on the upper surface of the inner bottom 80.

[0080] [3-2 Actions and Effects] According to the bag body 10 of the third embodiment, it is possible to obtain the same effects as those of the first embodiment. Furthermore, when the bag body 10 of the third embodiment has the same configuration as that of the second embodiment, it is possible to obtain the same effects as those of the second embodiment.

[0081] According to the bag body of the third embodiment, the presence of the inner bottom portion 80 can significantly reduce the wetting of the bag body 10 by the liquid even if the beverage leaks from the container.

[0082] 17A and 17B , the position restricting member 30 may be configured without the intervening wall 50 (Modification 1). In the example of FIGS. 17A and 17B , the outer edge 84 of the inner bottom 80 (the edge facing outward among the edges of the inner bottom 80) is joined to the peripheral wall 21. In this case, when the restricting wall 31 is in the second shape state ST2, it is preferable that the lower end of the restricting wall 31 be positioned above the lower end of the outer edge 84 of the inner bottom 80, as shown in FIG. 17B .

[0083] (Variation 2) In the bag body 10 according to the third embodiment, an absorbent body that absorbs liquid that has flowed down along the outer peripheral surface of the container may be provided on the upper surface of the inner bottom portion 80. Examples of the absorbent body include tissue paper and SAP.

[0084] (Modification 3) According to the bag body 10 of the third embodiment, the configurations shown in the modifications of the first embodiment and the second embodiment may be provided.

[0085] [4 Fourth embodiment] [4-1 Configuration] The bag body 10 according to the fourth embodiment has a configuration in which a regulating wall reinforcement structure is provided in the position regulating member 30 of the bag body 10 of any one of the first to third embodiments.

[0086] (Restriction wall reinforcement structure) The restriction wall reinforcement structure is a folded portion or a reinforcing material, as shown in Figures 18 and 19. Figures 18A, 18B, and 18C show an example in which the restriction wall reinforcement structure is a folded portion 100. Figures 19A and 19B show an example in which the restriction wall reinforcement structure is a reinforcing material 101.

[0087] (Folded portion) When the regulating wall reinforcement structure is a folded portion 100, the position regulating member 30 has a folded portion 100 formed at the upper end 36 of the regulating wall portion 31, as shown in FIG. 18A . In the folded portion 100 shown in FIG. 18A , a predetermined portion on the upper end 36 side of the regulating wall portion 31 is folded back toward the facing surface 34. However, this is just one example, and the folded portion 100 may also have a predetermined portion on the upper end side of the regulating wall portion 313 folded back toward the opposite side from the facing surface 34, as shown in FIG. 18C . The facing portions of the folded portion and the non-folded portion of the regulating wall 1 may be joined to each other with an adhesive. Note that, as shown in FIG. 18B , when the lower end of the regulating wall portion 31 is located above the lower end of the intervening wall 50, it is preferable that the folded portion 100 be formed at the upper end 36 of the regulating wall portion 31. When the position of the lower end of the regulating wall portion 31 is located higher than the position of the lower end of the intervening wall 50, an inclined surface 81 is likely to be formed on the upper surface of the inner bottom portion 80, and by forming a folded portion 100 at the upper end 36 of the regulating wall portion 31, the shape of the upper end 36 of the regulating wall portion 31 becomes more stable, making it possible to stabilize the shape of the gap 35, and further enhancing the effect of the inclined surface 81.

[0088] (Reinforcing Material) When the restricting wall reinforcement structure is a reinforcing material 101, the position restricting member 30 has the reinforcing material 101 provided at the upper end 36 of the restricting wall portion 31, as shown in FIGS. 19A and 19B . The reinforcing material 101 may be disposed on either the facing surface 34 side or the surface opposite the facing surface 34. The reinforcing material 101 may be disposed on both the facing surface 34 side and the surface opposite the facing surface 34. The material of the reinforcing material 101 is not particularly limited. Examples of the material of the reinforcing material 101 include paper-based materials, resins (resin sheets), and metals. However, from the viewpoints of reducing environmental impact and ease of disposal after use, it is preferable that the reinforcing material be made of a paper-based material. It is preferable to use a material for the reinforcing material that is stiffer than the position restricting member 30.

[0089] 20A, 20B, and 20C, the regulating wall reinforcement structure may use a combination of a reinforcing material 101 and a folded portion 100. For example, in the example of Fig. 20A and 20B, a reinforcing material 101 is provided at the upper end of the regulating wall portion 31, and a folded portion 100 is provided at the upper end of the regulating wall portion 31, and the folded portion 100 is formed so as to cover the reinforcing material 101 (so as to wrap the reinforcing material 101).

[0090] In addition, when the reinforcing material 101 and the folded portion 100 are used together, the reinforcing material 101 is not limited to being wrapped around the folded portion 100, and the reinforcing material 101 may be attached to the outside of the folded portion 100, as shown in Figure 20C.

[0091] [4-2 Actions and Effects] The bag body 10 according to the fourth embodiment can achieve the same effects as the bag body 10 according to any one of the first to third embodiments. Furthermore, in the bag body 10 according to the fourth embodiment, the position restricting member 30 has greater stiffness, so that when a container is placed in the small space portion 33, the bag body 10 is less likely to lose its shape.

[0092] [4-3 Modifications] (Modification 1) In the bag body 10 according to the fourth embodiment, the reinforcing material 101 may be further disposed on the surface of the restricting wall portion 31 so that the vertical direction is the longitudinal direction of the reinforcing material 101. Such an embodiment is referred to as Modification 1 of the fourth embodiment.

[0093] (Variation 2) According to the bag body 10 of the fourth embodiment, the configurations shown in the variations of the first embodiment, the second embodiment, and the third embodiment may be provided. Such an embodiment is referred to as Variation 2 of the fourth embodiment. Variation 1 of the fourth embodiment may also be applied to Variation 2 of the fourth embodiment.

[0094] 21A, 21B, and 21C, a bag 10 according to a fifth embodiment is similar to the bag 10 of any of the first to fourth embodiments in that it has a lid portion 120 and an adhesive placement portion 121 provided in the lid portion 120. The examples of Figures 21A to 21C show an example in which the peripheral wall portion 21 has a pair of wall surface portions 25 facing each other and in which the lid portion 120 and the adhesive placement portion 121 are provided.

[0095] (Peripheral Wall Portion) The peripheral wall portion 21 shown in the example of Fig. 21 has a pair of opposing wall surface portions 25. Here, the pair of wall surface portions 25 is referred to as a first wall surface portion 25A and a second wall surface portion 25B. Note that the first wall surface portion 25A and the second wall surface portion 25B are specified merely for convenience of explanation, and the terms first wall surface portion 25A and second wall surface portion 25B may be interchanged.

[0096] (Lid Portion) A lid portion 120 is formed on the upper end of the first wall surface portion 25A so as to cover the upper end of the second wall surface portion 25B. The shape of the lid portion 120 is not particularly limited. In the example of FIG. 21B , the lid portion 120 is formed in a trapezoidal shape. From the viewpoint of forming a state in which the opening is securely closed by covering the upper end of the second wall surface portion 25B with the lid portion 120 as shown in FIGS. 22A , 22B, and 22C , it is preferable that the lid portion 120 be formed across the entire width of the first wall surface portion 25A. FIGS. 22A , 22B, and 22C are diagrams illustrating a state in which the opening 24 is closed by the lid portion 120.

[0097] (Adhesive Disposing Section) The lid section 120 is preferably provided with an adhesive disposing section 121 in which an adhesive capable of adhering to the second wall surface section 25B is disposed in a state in which the upper end of the second wall surface section 25B is covered with the lid section 120. The adhesive disposing section 121 can be exemplified by a sealing member or the like. An example of the sealing member can be double-sided tape or the like.

[0098] (Release Paper) From the viewpoint of preventing dust and the like from adhering to the adhesive placement portion 121 when the bag body 10 is unused and from the viewpoint of preventing the adhesive placement portion 121 from coming into contact with other unintended objects, it is preferable that release paper 122 be attached so as to cover the surface of the adhesive placement portion 121. The release paper 122 is configured so that it can be released from a state in which it is attached to the surface of the adhesive placement portion 121 when the bag body 10 is unused (by peeling off the release paper 122) when the bag body 10 is in use. The release paper 122 can be a sheet material formed of a material that has weak adhesion to the adhesive that constitutes the adhesive attachment portion 121.

[0099] The release paper 122 may be configured to be completely physically detachable from the bag 10 when the bag 10 is in use, or may be configured to be difficult to separate, as shown in Figures 22A to 22C. The bag 10 is preferably configured so that a portion of the release paper 122 remains adhered to the bag 10 even after the release paper 122 is peeled off from the adhesive attachment portion 121. In this case, it is possible to reduce the possibility that the release paper 122 will separate from the bag 10 and become separate waste.

[0100] [5-2 Actions and Effects] The bag 10 according to the fifth embodiment can achieve the same effects as the bag according to any one of the first to fourth embodiments. In addition, in the bag 10 according to the fifth embodiment, the opening 24 of the bag 10 is closed, so that the heat retention of the space 23 can be improved.

[0101] [5-3 Modifications] (Modification 1) In the bag 10 according to the fifth embodiment, as shown in FIGS. 23A, 23B, and 23C, a grip portion 130 may be provided at a predetermined position on the first wall surface portion 25A. This embodiment is referred to as Modification 1 of the fifth embodiment. In Modification 1 of the fifth embodiment, the shape of the grip portion 130 is not particularly limited as long as it is configured so that the grip portion 130 can be grasped by the user's hand. In the example shown in FIGS. 23A to 23C, the grip portion 130 has a rectangular outer peripheral edge and a chamfered rectangular through-hole 131 formed therein. In this example, the through-hole 131 is an elongated hole formed in a horizontally elongated shape.

[0102] (First Example of Grip Portion) The example in FIG. 23 shows a first example of the grip portion 130. In the first example, the grip portion 130 is formed integrally with the peripheral wall portion 21. The base end of the grip portion 130 may be located at the same position as the base end of the lid portion 120, or may be located lower than the lid portion 120. With this type of bag 10, the opening 24 can be securely closed by covering the upper end of the second wall portion 25B with the lid portion 120, as shown in FIGS. 24A, 24B, and 24C. When the opening 24 is closed, the grip portion 130 rises upward, as shown in FIGS. 24A to 24C, making it easy to hold the bag 10 by inserting fingers into the through-hole 131 of the grip portion 130.

[0103] 26 shows an example of the second example of the grip portion 130. In the second example, a handle member 140 that forms the grip portion 130 and the lid portion 120 is formed separately from the peripheral wall portion 21. The handle member 140 is attached to the first wall portion 25A with the affixed portion 141 facing the outer surface of the first wall portion 25A in the direction of arrow FB, thereby forming a state in which the lid portion 120 and the grip portion 130 are arranged on the upper end side of the first wall portion 25A.

[0104] In either the first or second example of the gripping portion 130, the gripping portion 130 may be configured to stand upward when the upper end of the second wall surface portion 25B is covered with the lid portion 120, as shown in the examples of Figures 23 and 24. Furthermore, the gripping portion 130 may be arranged to stand upward in advance, as shown in the example of Figure 26. Furthermore, in the bag body 10, the lid portion 120 may be arranged so that the tip of the lid portion 120 faces downward.

[0105] According to the first modification of the fifth embodiment, the provision of the grip portion 130 can improve the ease of carrying the bag body 10 .

[0106] (Modification 2) In the bag body 10 according to the fifth embodiment, as shown in Figures 25A and 25B, a weakened portion may be provided at a predetermined position of the first wall surface portion 25A. Such an embodiment is referred to as Modification 2 of the fifth embodiment. The example of Figures 25A and 25B shows an example in which a weakened portion is provided in the bag body 10 according to Modification 2 of the fifth embodiment.

[0107] (Weakened portion) The weakened portion may be a perforated portion 150 in which through portions 152 and non-through portions 151 are alternately formed along a predetermined direction, as shown in Figures 25A and 25B, or may be a half-cut portion. Figure 25A is a diagram showing an example of bag body 10 when unused, and Figure 25B is a diagram showing an example of bag body 10 when in use.

[0108] The weakened portion is preferably provided in first wall portion 25A at a position that avoids lid portion 120, or in a portion of lid portion 120 that avoids adhesive placement portion 121 (however, at a position along lid portion 120 that is closer to the base end of lid portion 120 than the position where adhesive placement portion 121 is formed). By providing the weakened portion in such a position, the opening can be opened (the closure of the opening by lid portion 120 can be released) by breaking the weakened portion.

[0109] From the viewpoint of effectively preventing breakage of the bag body 10 originating from the weakened portion, it is preferable to avoid forming a weakened portion near the peripheral edge of the lid portion 10. When the weakened portion is a perforated portion 150 in which through portions 152 and non-through portions 151 are formed alternately along a predetermined direction, this can be achieved by forming the perforated portion 150 so that the non-through portions 151 are arranged near the peripheral edge of the lid portion 120.

[0110] (Variation 3) In the case where the bag 10 according to the fifth embodiment is provided with a release paper 122, the release paper 122 may have a display unit provided on the exposed surface side of the release paper 122. This embodiment is referred to as Variation 3 of the fifth embodiment. In Variation 3 of the fifth embodiment, examples of the display unit include a printed unit on the exposed surface of the release paper 122, and a structural unit in which a printed sheet is attached to the exposed surface of the release paper 122. By providing the display unit, the details of the contents contained in the bag can be written on the display unit, allowing the user to recognize the contents contained in the bag 10 without having to open the opening of the bag 10.

[0111] (Variant 4) According to the bag body of the fifth embodiment, the configurations shown in the variants of the first embodiment, the second embodiment, the third embodiment, and the fourth example may be provided.

[0112] [5-4 Reference Example] According to the bag body 10 of the fifth embodiment, the above-described lid portion 120 and / or grip portion 130 may be provided in a bag body (i.e., a bag body 10 constituted only by the main body 20) in which the position restricting member 30 is omitted from the bag body 10 of each of the first to fourth embodiments (reference example). In the case of the reference example, the above-described weakened portion may be provided.

[0113] [6 Sixth Embodiment] [6-1 Configuration] As shown in FIGS. 64A and 64B , the bag body 10 according to the sixth embodiment is the bag body 10 of any of the first to fifth embodiments (excluding the reference example), except that a receiving portion 155 is provided on the restricting wall portion 31 of the position restricting member 30. The receiving portion 155 is a structure capable of receiving liquid falling from above the restricting wall portion 31. Examples of the receiving portion 155 include a groove portion 156 opening upward as shown in FIGS. 64A and 64B , and a pocket portion (not shown) having an opening formed upward. The receiving portion 155 may be provided on the facing surface 34 of the restricting wall portion 31 as shown in the example of FIG. 64C , or on the surface opposite the facing surface 34 as shown in FIGS. 64A and 64B . The receiving portion 155 may be formed of the same material as the restricting wall portion 31. The receiving portion 155 is preferably configured so that at least a portion of its upper end can be deformed in a direction away from the restricting wall portion 31. Such a receiving portion 155 can be realized by forming it from a shape-deformable material, such as a paper-based material. Note that Figs. 64A and 64B are cross-sectional views for explaining the bag body 10 according to the sixth embodiment, and Fig. 64A shows the restricting wall portion 31 of the position restricting member 30. Fig. 64B shows an example of a case where a container 200 is housed in the bag body 10. Fig. 64C is a cross-sectional view for explaining the bag body 10 according to the sixth embodiment.

[0114] [6-2 Actions and Effects] According to the bag body of the sixth embodiment, the receiving portion 155 is formed, so that when a container containing a liquid or the like is stored as the contents inside the bag body 10, if the liquid spills from the container, the liquid can be easily trapped by the receiving portion 155.

[0115] [7 Seventh embodiment] [7-1 Configuration] The bag body 10 according to the seventh embodiment has an adhesive member 160 as shown below attached to the main body 20 in the bag body 10 of any one of the first to sixth embodiments.

[0116] In the bag body 10 according to the seventh embodiment, as shown in Figures 27A to 27C, the main body 20 has a bottom 22 and a peripheral wall 21 connected to the bottom 22. The peripheral wall 21 has a pair of opposing wall surfaces 25, namely, a first wall surface 25A and a second wall surface 25B. The main body 20 is surrounded by the bottom 22 and the peripheral wall 21 and forms a space 23 capable of accommodating contents (such as a container 200), and an opening 24 through which the contents are inserted into the space 23. In the bag body 10 according to the seventh embodiment, as shown in Figures 27A to 27C, an adhesive member 160 is attached to an outer surface 21B of the peripheral wall 21. Note that the configuration of the main body 20 (the peripheral wall 21 and the bottom 22) is the same as that described in the first to sixth embodiments, and therefore detailed description thereof will be omitted.

[0117] (Adhesive Member) The adhesive member 160 has a first adhesive surface forming portion 161 and a second adhesive surface forming portion 162. In the adhesive member 160, the first adhesive surface forming portion 161 is attached to a predetermined region of the outer surface of the first wall surface portion 25A. Furthermore, the bag body 10 according to the seventh embodiment is configured so that at least a portion of the second adhesive surface forming portion 162 can be adhered to the outer surface of the second wall surface portion 25B when a bending structure 170 (described later) is formed. The adhesive member 160 is positioned so that the second adhesive surface forming portion 162 straddles a lower end 173 of the bending structure 170.

[0118] The first adhesive surface forming portion 161 and the second adhesive surface forming portion 162 are not particularly limited as long as they are configured to be able to form the bent structure 170 as described below. In the example of Fig. 27B, the first adhesive surface forming portion 161 and the second adhesive surface forming portion 162 are formed in separate regions, but the first adhesive surface forming portion 161 and the second adhesive surface forming portion 162 may be connected.

[0119] The shape of the adhesive member 160 is not particularly limited as long as it can form the first adhesive surface forming portion 161 and the second adhesive surface forming portion 162. In the examples of Figures 27A to 27C, the adhesive member 160 is formed in a U-shape, but this is just one example. From the standpoint of being able to stabilize the bending structure 170 and forming a graspable gap 171, it is preferable that the shape of the adhesive member 160 be such that the second adhesive surface forming portion 162 can be positioned near both ends of the bending structure 170 that are spaced apart in the longitudinal direction of the bending structure 170, and the first adhesive surface forming portion 161 can be positioned away from the bending structure 170.

[0120] (Bent structure) The bent structure 170 is defined by a portion where the first wall surface portion 25A and the second wall surface portion 25B are bent so that the outer surface of the first wall surface portion 25A and the outer surface of the second wall surface portion 25B face each other when a predetermined portion (first upper end wall surface portion 165A) on the upper end side of the first wall surface portion 25A and a predetermined portion (second upper end wall surface portion 165B) on the upper end side of the second wall surface portion 25B are overlapped. The state in which the first upper wall portion 165A and the second upper wall portion 165B are overlapped may include not only a state in which the inner surfaces of the first upper wall portion 165A and the second upper wall portion 165B are in contact with each other, but also a state in which the separation distance Wh between the first upper wall portion 165A and the second upper wall portion 165B is narrowed so that it is smaller than the sum of the thicknesses of the first upper wall portion 165A and the second upper wall portion 165B. The state in which the first upper wall portion 165A and the second upper wall portion 165B are overlapped is preferably a state in which the inner surfaces of the first upper wall portion 165A and the second upper wall portion 165B are in contact with each other.

[0121] Note that a predetermined portion of the peripheral wall 21 on the upper end side thereof that is intended to form the bent structure 170 is referred to as a first peripheral wall-forming portion 166, and the portion excluding the first peripheral wall-forming portion 166 is referred to as a second peripheral wall-forming portion 167. That is, assuming a state in which the bent structure 170 is formed in the bag body 10, the portion that forms the bent structure 170 is referred to as the first peripheral wall-forming portion 166, and the portion excluding the first peripheral wall-forming portion 166 is referred to as the second peripheral wall-forming portion 167. Specifically, the first peripheral wall-forming portion 166 is defined as the portion of the peripheral wall 21 that is defined from the portion that forms the opening 24, which is the end of the peripheral wall 21, to the portion of the peripheral wall 21 that is bent that is close to the bottom 22.

[0122] In the example of the bag 10 shown in Figures 27A to 27C, the bent structure 170 is preferably formed as shown in Figures 28 and 29. That is, as shown in Figures 28A and 28B, a predetermined portion of the first peripheral wall forming portion 166 above the upper end of the first adhesive surface forming portion 161 is bent toward the second wall portion 25B. At this time, the upper end of the main body 20 of the bag 10 becomes the bent end (first bent end 172). In the example of Figure 28A, the second adhesive surface forming portion 162 protrudes upward from the first bent end 172.

[0123] From the state in which the first folded end 172 is the upper end of the bag body 10, the first peripheral wall forming portion 166 is further folded at its lower end in a direction toward the second wall surface portion 25B. That is, the first peripheral wall forming portion 166 is folded multiple times (twice in the examples of FIGS. 28 and 29 ). At this time, a bent structure 170 is formed as shown in FIG. 29 . Therefore, in the example of FIGS. 29A and 29B , the bent structure 170 is defined by the portion where the first wall surface portion 25A and the second wall surface portion 25B are bent toward the second wall surface portion 25B so that the outer surfaces of the first wall surface portion 25A and the second wall surface portion 25B face each other. In the example of FIGS. 29A and 29B , the bent structure 170 is a folded structure portion formed by multiple folding. Since the bent structure 170 is the above-described folded structure portion, the bent structure 170 is a structure portion in which the opening 24 is concealed.

[0124] 29A and 29B, when the bent structure 170 is formed, at least a portion of the second adhesive surface forming portion 162 faces the outer surface of the second wall surface portion 25B without the first wall surface portion 25A in between. That is, the position of the adhesive member 160 is determined so that when the bent structure 170 is formed, at least a portion of the second adhesive surface forming portion 162 can be adhered to the outer surface of the second wall surface portion 25B. When the bent structure 170 is not formed, as shown in FIGS. 27A to 27C, the second adhesive surface forming portion 162 is avoided from adhering to the outer surface 21B of the peripheral wall portion 21.

[0125] When the bent structure 170 is formed, as shown in FIGS. 30A and 30B , it is preferable that the second adhesive surface forming portion 162 be adhered to at least the outer surface of the second wall portion 25B. By adhering the second adhesive surface forming portion 162 to the outer surface of the second wall portion 25B in this manner, the bent structure 170 is easily fixed. As described above, the bent structure 170 is a structural portion that conceals the opening 24, and the second adhesive surface forming portion 162 is adhered to at least the second wall portion 25B, which prevents a third party other than the user from opening the opening 24 of the bag body and inserting a hand through the opening 24 into the bag body 10. Furthermore, by adhering the second adhesive surface forming portion 162 to at least the outer surface of the second wall portion 25B, the bent structure 170 can be stabilized. Therefore, the structure of the "graspable gap 171" (described later) formed by the formation of the bent structure 170 can be stabilized.

[0126] (Gap) It is preferable that, when the second adhesive surface forming portion 162 is adhered to the peripheral wall portion 21, a graspable gap 171 can be formed between the first peripheral wall forming portion 166 of the peripheral wall portion 21 that forms the bent structure 170 and the second peripheral wall forming portion 167 excluding the first peripheral wall forming portion 166. The formation of such gap 171 allows a user to insert their hand into gap 171 and carry the bag body 10 in their hand. In this case, because the opening 24 is closed due to the bent structure 170 being fixed, insertion of the hand into the space portion 23 through gap 171 is restricted.

[0127] 27 to 30 , the bag body 10 according to the seventh embodiment preferably has a peeling member 175 attached thereto so as to cover the second adhesive surface forming portion 162. Release paper may be suitably used as the peeling member 175. When the bent structure 170 is not formed, the peeling member 175 is suitably arranged so as to cover the second adhesive surface forming portion 162. When the bent structure 170 is formed, the peeling member 175 is peeled off from the second adhesive surface forming portion 162 to expose the second adhesive surface forming portion 162.

[0128] Furthermore, peeling member 175 may be configured to be prevented from being completely separated from adhesive member 160. In the example of Fig. 30A, peeling member 175 is joined to the end of adhesive member 160 (the end further toward the tip side from the portion where second adhesive surface forming portion 162 is formed), and even if peeling member 175 is peeled off from second adhesive surface forming portion 162, peeling member 175 remains connected to the end of adhesive member 160.

[0129] 30A and 30B do not prohibit the peeling member 175 from being completely separable from the adhesive member 160.

[0130] [7-2 Actions and Effects] According to the bag body 10 of the seventh embodiment, the adhesive member 160 and the bending structure 170 having the above-described configuration are formed, and thus a graspable gap 171 can be formed, allowing a user to carry the bag body 10 by inserting a hand into the gap 171. Furthermore, the adhesive member 160 and the bending structure 170 are formed, and the bending structure 170 is stabilized, and a state in which the opening 24 is concealed can be stably formed, thereby reducing the risk of a third party improperly inserting a hand into the space 23 through the opening 24.

[0131] 29 shows the bag 10 according to the seventh embodiment configured such that the second adhesive surface forming portion 162 is adhesive to the second wall surface portion 25B when the bent structure 170 is formed. However, this is merely an example. The bag 10 according to the seventh embodiment may be configured such that the second adhesive surface forming portion 162 is adhesive to the first wall surface portion 25A and the second wall surface portion 25B when the bent structure 170 is formed (Variation 1). In this case, it is preferable that the second adhesive surface forming portion 162 is disposed across the lower end 173 of the bent structure 170 and is adhesively bonded to the outer surfaces of the first wall surface portion 25A and the second wall surface portion 25B when the bent structure 170 is formed. As described above, bending structure 170 is a structural component that conceals opening 24, and second adhesive surface forming portion 162 is adhered to at least the outer surfaces of first wall surface portion 25A and second wall surface portion 25B, thereby more effectively preventing a third party other than the user from tampering with opening 24 of bag 10. That is, because second adhesive surface forming portion 162 is disposed across lower end 173 of bending structure 170 and is adhered to first wall surface portion 25A and second wall surface portion 25B, if a third party other than the user tampering with opening 24 of bag 10, traces of tampering are likely to be left by, for example, breaking adhesive member 160, thereby more effectively preventing a third party from tampering with opening 24 into bag 10.

[0132] (Variant 2) In the bag body 10 according to the seventh embodiment, the bending structure 170 may be defined by a portion where the first wall surface portion 25A and the second wall surface portion 25B are bent toward the first wall surface portion 25A with the outer surface of the first wall surface portion 25A and the outer surface of the second wall surface portion 25B facing each other, as shown in Figures 36A and 36B.

[0133] [7-3 Reference Example] In the bag body 10 according to the seventh embodiment, the above-described adhesive member 160 may be provided on a bag body obtained by omitting the position restricting member 30 from the bag body 10 of each of the first to sixth embodiments (i.e., a bag body constituted only by a main body as shown in FIG. 31 ) (reference example). Furthermore, as shown in FIG. 32 , the main body 20 may be provided with an adhesive placement portion 179 for closing the opening 24 on the inner surface 21A of the peripheral wall portion 21. In the example of FIG. 32 , the adhesive placement portion 179 for closing 24 is disposed on the upper end side and the inner surface side of the peripheral wall portion 21. An example of this adhesive placement portion is a double-sided adhesive tape.

[0134] [8 Eighth Embodiment] [8-1 Configuration] The bag body 10 according to the eighth embodiment has a sealing sheet 180 as shown below in the bag body 10 of any one of the first to seventh embodiments.

[0135] In the bag body 10 according to the eighth embodiment, the main body 20 has a bottom 22 and a peripheral wall 21 connected to the bottom 22. The peripheral wall 21 has a pair of opposing wall surfaces 25, a first wall surface 25A and a second wall surface 25B. The main body 20 defines a space 23 surrounded by the bottom 22 and the peripheral wall 21, capable of accommodating contents, and an opening 24 through which the contents are inserted into the space 23. In the bag body 10 according to the eighth embodiment, as shown in FIGS. 33A to 33B , a sealing sheet 180 is attached to the outer surface 21B of the peripheral wall 21. Note that the configuration of the main body 20 (such as the peripheral wall 21 and bottom 22) is similar to that described in the first to seventh embodiments, and therefore detailed description thereof will be omitted. For convenience of explanation, descriptions of the position restricting member 30 are omitted in the drawings (such as FIGS. 33 to 35 and 37 ) illustrating an example of the eighth embodiment.

[0136] (Sealing Sheet) The sealing sheet 180 includes a detachable sealing member 181. In the example shown in FIGS. 33A and 33B, the sealing member 181 is detachably attached to a sealing base 182. The sealing member 181 has an adhesive surface forming portion 183 and is detachably attached to the surface of the sealing base 182 with the adhesive surface forming portion 183 facing the sealing base 182. Note that "detachable" means that the sealing member 181 can be peeled off and reattached to the surface of the sealing base 182. The term "reattachable" also includes cases where the adhesive strength of the sealing member 181 to the sealing base 182 is reduced upon reattachment. The sealing sheet 180 is affixed to a predetermined region of the outer surface 21B of the peripheral wall 21. Furthermore, in the bag body 10 according to the seventh embodiment, the sealing sheet 180 is affixed to the outer surface 21B of the peripheral wall 21 so as to avoid the portion of the peripheral wall 21 that forms the bent structure 170. 33A and 33B, the sticker sheet 180 is attached to the second wall surface portion 25B of the peripheral wall portion 21, but this is just an example. At least a part of the sticker sheet 180 may be attached to a portion that is not attached to the second wall surface portion 25B.

[0137] (Sealing Member) When a bending structure 170, which will be described later, is formed, the sealing member 181 is arranged so as to straddle the lower end 173 of the bending structure 170 (Condition 1). When the bending structure 170 is formed, the sealing member 181 is configured so as to be able to be adhered to the peripheral wall portion 21 in a state in which the adhesive surface forming portion 183 faces the first wall surface portion 25A and the second wall surface portion 25B (Condition 2).

[0138] The shape and number of the sealing members 181 provided on the sealing sheet 180 are not particularly limited as long as they are configured to satisfy the above-mentioned conditions 1 and 2. In the example of Figures 33A and 33B, the sealing members 181 are configured from two rectangular sheet materials having a predetermined size.

[0139] (Seal Base) A member having a releasable surface on one surface can be suitably used as the seal base 182. With the releasable surface facing outward (with the releasable surface facing outward relative to the seal member 181), the back side of the seal base 182 is attached to the peripheral wall 21, whereby the seal base 182 is disposed on the outer surface 21B of the peripheral wall 21.

[0140] (Bent Structure) With regard to the bag body 10 according to the eighth embodiment, the bent structure 170 is specified by the same definition as the bent structure 170 described in the seventh embodiment. That is, the bent structure 170 is defined by a portion where the first wall surface portion 25A and the second wall surface portion 25B are bent such that the outer surfaces of the first wall surface portion 25A and the second wall surface portion 25B face each other in a state where a predetermined portion (first upper end wall surface portion 165A) on the upper end side of the first wall surface portion 25A and a predetermined portion (second upper end wall surface portion 165B) on the upper end side of the second wall surface portion 25B are overlapped with each other.

[0141] The first upper wall portion 165A and the second upper wall portion 165B are also identified by the same definitions as the first upper wall portion 165A and the second upper wall portion 165B of the bent structure 170 described in the seventh embodiment. As described in the seventh embodiment, a predetermined portion of the peripheral wall 21 on the upper end side of the peripheral wall 21 that is intended to form the bent structure 170 is referred to as a first peripheral wall-forming portion 166, and the portion excluding the first peripheral wall-forming portion 166 is referred to as a second peripheral wall-forming portion 167. In other words, assuming a state in which the bent structure 170 is formed in the bag body 10, the portion that forms the bent structure 170 is referred to as the first peripheral wall-forming portion 166, and the portion excluding the first peripheral wall-forming portion 166 is referred to as the second peripheral wall-forming portion 167. Specifically, the first peripheral wall forming portion 166 is defined as the portion of the peripheral wall 21 that is defined from the portion that forms the opening 24 that is the end of the peripheral wall 21 to the portion of the peripheral wall 21 that is bent that is closest to the bottom 22.

[0142] In the example of bag body 10 shown in Figure 33A, bent structure 170 is preferably formed as shown in Figures 33B, 37A, and 37B. That is, as shown in Figures 33B, 37A, and 37B, with first upper end wall portion 165A and second upper end wall portion 165B overlapping each other, first peripheral wall portion forming portion 166 is folded back multiple times toward second wall portion 25B. At this time, bent structure 170 is formed as shown in Figures 33B, 37A, and 37B. 33B , 37A , and 37B , the bent structure 170 is defined by a portion where the first wall surface 25A and the second wall surface 25B are bent toward the second wall surface 25B when the outer surfaces of the first wall surface 25A and the second wall surface 25B are facing each other (when the outer surfaces of the first wall surface 25A and the second wall surface 25B are overlapping). In the examples of FIGS. 33B , 37A , and 37B , the bent structure 170 is a bent structure formed by multiple bending operations. Because the bent structure 170 is the bent structure described above, the opening 24 is concealed in the bent structure 170.

[0143] 33B is an example. The bent structure 170 may be defined by a portion where the first wall surface portion 25A and the second wall surface portion 25B are bent toward the first wall surface portion 25A in a state where the outer surface of the first wall surface portion 25A and the outer surface of the second wall surface portion 25B face each other.

[0144] 33B and 37A , when the bent structure 170 is formed, the sealing member 181 is peeled off from the sealing sheet 180. Then, the sealing member 181 is placed on the outer surface 21B of the peripheral wall portion 21 so as to straddle the lower end 173 of the bent structure 170. At this time, the sealing member 181 is adhered to the peripheral wall portion 21 with the adhesive surface forming portion 183 facing the first wall surface portion 25A and the second wall surface portion 25B. By adhering the sealing member 181 to the first wall surface portion 25A and the second wall surface portion 25B in this manner, the bent structure 170 is fixed.

[0145] In the example shown in FIG. 33B, the seal members 181 are arranged near both ends of the bent structure 170 along the longitudinal direction, but this is just one example.

[0146] 37B , when the sealing member 181 is adhered to the peripheral wall 21, the bag 10 according to the eighth embodiment is configured so that a graspable gap 171 can be formed between the first peripheral wall forming portion 166 of the peripheral wall 21 that forms the bent structure 170 and the second peripheral wall forming portion 167 excluding the first peripheral wall forming portion 166, as described in the seventh embodiment. The formation of such gap 171 allows a user to insert their hand into gap 171 and carry the bag 10 in their hand.

[0147] [8-2 Actions and Effects] According to the bag body 10 of the eighth embodiment, the provision of the sealing member 181 allows for the stable formation of the graspable gap 171 when the bending structure 170 is formed, thereby enabling the user to carry the bag body 10 by inserting their hand into the gap 171. Furthermore, since the bending structure 170 is fixed by the sealing member 181, the bending structure 170 is stabilized and the state in which the opening 24 is concealed can be stably formed, thereby reducing the risk of a third party improperly inserting their hand into the space 23 through the opening 24.

[0148] 34A , 34B , 35A , and 35B , in the eighth embodiment, the sealing member 181 may have a through hole 184 (Variation 1). In this case, the through hole 184 is configured so that the gap 171 can be exposed from the through hole 184 when the sealing member 181 is adhered to the outer surface 21B of the peripheral wall portion 21. FIGS. 34A and 34B show an example in which one through hole 184 is formed, and FIGS. 35A and 35B show an example in which a plurality of through holes 184 (three in FIGS. 35A and 35B ) are formed.

[0149] [8-4 Reference Examples] (Reference Example 1) In the bag according to the eighth embodiment, the above-described sealing sheet 180 may be provided in a bag 10 obtained by omitting the position restricting member 30 from the bags 10 of the first to sixth embodiments (i.e., a bag 10 configured only with the main body 20 as shown in FIG. 31 ) (Reference Example 1). In the case of the reference example, an adhesive placement portion 179 for closing the opening 24 may be provided as shown in FIG. 32 . The adhesive placement portion 179 for closing the opening 24 is disposed on the upper end side of the peripheral wall portion 21 and on the inner surface 21A side of the peripheral wall portion 21. An example of this adhesive placement portion 179 is a double-sided adhesive tape.

[0150] (Reference Example 2) In the bag body 10 according to the eighth embodiment, the sealing sheet 180 is attached to the main body 20 of the bag body 10, but the bag body 10 and the sealing sheet 180 may be combined in a state in which the sealing sheet 180 is removed from the main body 20 of the bag body 10 (Reference Example 2). In Reference Example 2, the sealing sheet 180 may be stored in advance in the space portion 23 of the bag body 10.

[0151] [9 Ninth embodiment] The bag body 10 according to the ninth embodiment is the bag body 10 of any one of the first to eighth embodiments, and has a bag body weakened portion 190 as described below.

[0152] In the bag body 10 according to the ninth embodiment, the main body 20 has a bottom 22 and a peripheral wall 21 connected to the bottom 22. The peripheral wall 21 has a pair of opposing wall surfaces 25, a first wall surface 25A and a second wall surface 25B. The main body 20 defines a space 23 surrounded by the bottom 22 and the peripheral wall 21, capable of accommodating contents, and an opening 24 through which the contents are inserted into the space 23. In the bag body 10 according to the ninth embodiment, as shown in FIGS. 38A to 38B , a bag body weakened portion 190 is formed in the peripheral wall 21. Note that the configuration of the main body 20 (such as the peripheral wall 21 and the bottom 22) is similar to that described in the first to eighth embodiments, and therefore detailed description thereof will be omitted. For convenience of explanation, the position restricting member 30 is omitted in each figure ( FIG. 38 ) illustrating an example of the ninth embodiment. FIG. 38 shows an example in which a bag weakened portion 190 is formed in the second wall surface portion 25B of the peripheral wall portion 21 of the main body in the bag according to the fifth embodiment.

[0153] (Bag weakened portion) The bag weakened portion 190 is specified as a portion of the peripheral wall portion 21 that is structurally weakened compared to a portion different from the bag weakened portion 190. Examples of the bag weakened portion 190 include a perforated structure and a half-cut portion. From the perspective of maintaining the internal temperature of the bag body 10 as much as possible, the bag weakened portion 190 is preferably a half-cut portion. The half-cut portion can be specified as a structure in which the peripheral wall portion 21 is cut to a predetermined depth in the thickness direction of the peripheral wall portion 21. The depth of the "cut into the peripheral wall portion 21" that forms the half-cut portion is not limited to a portion cut into the peripheral wall portion 21 to half the thickness of the peripheral wall portion 21. The depth of the cut into the peripheral wall portion 21 may be more than half the thickness of the peripheral wall portion 21 or less than half the thickness of the peripheral wall portion 21. The half-cut portions may be formed by cutting from the inner surface 21A of the peripheral wall portion 21 toward the outer surface 21B, or may be formed by cutting from both the outer surface 21B and the inner surface 21A of the peripheral wall portion 21 in the thickness direction of the peripheral wall portion 21. It is preferable that the half-cut portions be formed by cutting from the inner surface 21A of the peripheral wall portion 21 toward the outer surface 21B.

[0154] In the example of FIG. 38 , the bag body weakened portion 190 is formed in a U-shape, but this is just one example. The shape of the bag body weakened portion 190 is not particularly limited. Furthermore, by breaking the bag body weakened portion 190, a lid surface portion 191 is formed, or by flipping the lid surface portion 191 outward and breaking the bag body weakened portion 190, the space portion 23 of the bag body 10 can be exposed, and the contents stored in the space portion 23 can be removed. In the example of FIGS. 38A and 38B , by flipping the lid surface portion 191 upward and outward, the rupture of the bag body weakened portion 190 progresses, and the space portion 23 of the bag body 10 can be exposed. However, this is just one example of the lid surface portion 191. The lid surface portion 191 may be formed so as to expose the space portion 23 of the bag body 10 by flipping the lid surface portion 191 outward (flipping it down) from top to bottom, or the lid surface portion 191 may be formed so as to expose the space portion 23 of the bag body 10 by flipping the lid surface portion 191 like a door.

[0155] In the example of Fig. 38, the bag body weakened portion 190 is formed on the second wall surface portion 25B, but this is just one example. The bag body weakened portion 190 may be formed on the first wall surface portion 25A, or on both the first wall surface portion 25A and the second wall surface portion 25B. The bag body weakened portion 190 may also be formed on the entire surface of the peripheral wall portion 21. The bag body weakened portion 190 may also be formed so as to go around the entire circumference of the peripheral wall portion 21.

[0156] (Tab) From the viewpoint of facilitating the displacement of the lid surface portion 191, it is preferable that the lid surface portion 191 be provided with a tab 192. A user can pinch the tab 192 and pull it outward to displace (turn up) the lid surface portion 191 and progress the rupture of the bag body weakened portion 190. As the lid surface portion 191 is displaced and the rupture of the bag body weakened portion 190 progresses, the space portion 23 of the bag body 10 becomes exposed, and the contents stored in the space portion 23 can be removed.

[0157] [10 Tenth embodiment] [10-1 Configuration] As shown in Figures 39A, 39B, and 39C, the bag body 10 according to the tenth embodiment is similar to the fifth embodiment in that it is the bag body 10 of any of the first to fourth embodiments, has a lid portion 120, and an adhesive placement portion 121 is provided in the lid portion 120, and a lid portion penetration portion 193 and a main body penetration portion 195 are formed in the lid portion 120 and the main body 20, respectively, so that a gripping structure portion 194 that can function as a handle for the bag body 10 can be formed when the opening 24 of the main body 20 is closed by the lid portion 120.

[0158] In the bag 10 according to the tenth embodiment, the main body 20 has a bottom 22 and a peripheral wall 21 connected to the bottom 22, and the peripheral wall 21 has a pair of opposing wall surfaces, namely, a first wall surface 25A and a second wall surface 25B. The main body 20 forms a space 23 surrounded by the bottom 22 and the peripheral wall 21 and capable of accommodating contents, and an opening 24 through which the contents are inserted into the space 23. The examples of Figures 39A to 39C show an example in which the peripheral wall 21 has a pair of opposing wall surfaces 25, and a lid 120 and an adhesive placement portion 121 are provided.

[0159] 39, a pair of opposing wall surfaces 25 are referred to as a first wall surface 25A and a second wall surface 25B for convenience. That is, the first wall surface 25A and the second wall surface 25B are specified merely for convenience of explanation, and the terms first wall surface 25A and second wall surface 25B may be interchanged.

[0160] As in the fifth embodiment, the bag 10 according to the tenth embodiment has a lid portion 120 and an adhesive placement portion 121 formed at the upper end of the first wall portion 25A. As in the fifth embodiment, as shown in the example of Fig. 39, the bag according to the tenth embodiment preferably has a release paper 122 provided thereon. The configurations of the lid portion 120, the adhesive placement portion 121, and the release paper 122 are the same as those in the fifth embodiment, and therefore detailed description thereof will be omitted.

[0161] (Lid penetration portion and main body penetration portion) The bag 10 according to the tenth embodiment includes a lid penetration portion 193 and a main body penetration portion 195. The lid penetration portion 193 is preferably formed inside the outer periphery of the area where the adhesive placement portion 121 is formed. In the example of Fig. 39, the lid penetration portion 193 is configured as a rectangular through-hole formed in the lid 120. If a release paper 122 is attached to the lid 120, the lid penetration portion 193 is preferably formed to avoid the release paper 122.

[0162] The body through-hole 195 is formed at a predetermined position in the peripheral wall 21 of the main body 20. The body through-hole 195 is formed so as to face the lid through-hole 193 when the opening 24 is covered with the lid 120. In the example of FIG. 39 , the body through-hole 195 is configured as a rectangular through-hole formed in the peripheral wall 21. The body through-hole 195 is formed in both the first wall surface 25A and the second wall surface 25B, and it is preferable that the formation position of the body through-hole 195 in the first wall surface 25A and the formation position of the body through-hole 195 in the second wall surface 25B are generally aligned.

[0163] (Gripping Structure) In the bag body 10, when the upper end of the second wall surface portion 25B is covered with the lid portion 120 (when the opening 24 is closed by covering the upper end of the second wall surface portion 25B with the lid portion 120), the position of the lid portion penetration portion 193 is generally aligned with the formation position of the body penetration portion 195 of the second wall surface portion 25B. At this time, the positions of the lid portion penetration portion 193, the formation position of the body penetration portion 195 of the second wall surface portion 25B, and the formation position of the body penetration portion 195 of the first wall surface portion 25A are generally aligned, and the lid portion penetration portion 193 and the body penetration portion 195 form the gripping structure portion 194.

[0164] [10-2 Actions and Effects] With bag 10 according to the tenth embodiment, when opening 24 is closed by covering the upper end of second wall portion 25B with lid portion 120, a user can easily carry bag 10 by using grip structure 194 as a handle. By providing adhesive disposing portion 121 around lid penetration portion 193, grip structure 194 can be made to have a strong structure.

[0165] [10-3 Modifications] (Modification 1) In the bag according to the tenth embodiment, the shapes of the lid-penetrating portion 193 and the body-penetrating portion 195 are not limited to rectangular, and may be other shapes (Modification 1). In the bag 10 according to Modification 1 of the tenth embodiment, for example, the shapes of the lid-penetrating portion 193 and the body-penetrating portion 195 may be elliptical as shown in Fig. 41, or may be triangular, polygonal, or irregular. Furthermore, the shapes of the lid-penetrating portion 193 and the body-penetrating portion 195 may be the same or different from each other.

[0166] (Variation 2) In the bag body 10 according to the tenth embodiment, the lid-penetrating portion 193 may be formed in a slit shape as shown in Figures 42 to 47 (Variation 2). In Variation 2, the lid-penetrating portion 193 is preferably formed in a shape that forms a grip structure reinforcing portion 196.

[0167] (Gripping structure reinforcement portion) The gripping structure reinforcement portion 196 can be identified as a portion having a structure in which the entire gripping structure reinforcement portion 196 from the base end to the tip end TP (tip end TP of the gripping structure reinforcement portion 196) can be rotated around the base end BP, which is the straight line connecting both longitudinal ends (positions HP1, HP2) of the lid portion penetration portion 193, as the rotation axis.

[0168] 42, 43, and 46B show a first example of lid penetrating portion 193 and gripping structure reinforcement portion 196. In the first example, lid penetrating portion 193 is formed so that gripping structure reinforcement portion 196 has its base end BP positioned on the upper side and its tip end TP positioned on the lower side when the tip of lid 120 is facing upward as shown in FIG.

[0169] When the lid portion 120 covers the upper end of the second wall portion 25B to close the opening 24, the gripping structure reinforcement portion 196 is positioned with its base end BP on the lower side and its tip end TP on the upper side, as shown in FIGS. 43A to 43C . In this case, as shown in FIG. 46B , the gripping structure reinforcement portion 196 is preferably bent toward the space portion 23. When the gripping structure reinforcement portion 196 is bent toward the space portion 23, it passes through the main body-penetrating portion 195 of the second wall portion 25B and the main body-penetrating portion 195 of the first wall portion 25A, and the tip end TP of the gripping structure reinforcement portion 196 can be positioned on the outer surface side of the first wall portion 25A (the outer surface 21B side of the peripheral wall portion 21). Then, by folding the tip end TP of the gripping structure reinforcement portion 196 toward the outer surface side of the first wall portion 25A, the structure of the gripping structure portion 194 can be reinforced. It is preferable that gripping structure reinforcement portion 196 be provided with adhesive on a portion that faces the outer surface of first wall portion 25A when tip end TP of gripping structure reinforcement portion 196 is folded back toward the outer surface of first wall portion 25A. In this case, a predetermined portion on the tip end TP side of gripping structure reinforcement portion 196 can be adhered to the outer surface of first wall portion 25A, thereby further reinforcing the structure of gripping structure portion 194. In this case, gripping structure reinforcement portion 196 can reduce exposure of space portion 23, thereby reducing the risk of a third party or the like inserting their hand into space portion 23.

[0170] 44, 45, and 46A show a second example of the lid penetrating portion 193 and the gripping structure reinforcement portion 196. In the second example, the lid penetrating portion 193 is formed so that the base end BP of the gripping structure reinforcement portion 196 is positioned on the lower side and the tip end TP of the gripping structure reinforcement portion 196 is positioned on the upper side when the tip of the lid 120 is facing upward as shown in FIG.

[0171] In the second example, when the lid 120 covers the upper end of the second wall portion 25B to close the opening 24, the gripping structure reinforcement portion 196 is positioned with its base end BP on the upper side and its tip end TP on the lower side, as shown in FIGS. 45A to 45C . As shown in FIG. 46B , in this case, the gripping structure reinforcement portion 196 is preferably bent toward the space 23. This is because, as in the first example, the structure of the gripping structure reinforcement portion 196 can be reinforced by passing the tip end TP of the gripping structure reinforcement portion 196 through the body-penetrating portion 195 of the second wall portion 25B and the body-penetrating portion 195 of the first wall portion 25A and then folding back a predetermined portion of the gripping structure reinforcement portion 196 on the tip end TP side toward the outer surface of the first wall portion 25A. Unlike the first example, in the second example, the tip end TP is bent upward.

[0172] (Third Example of Lid-Penetration Portion and Gripping Structure Reinforcement Portion) Figures 47A and 47B show a third example of the lid-penetration portion 193 and the gripping structure reinforcement portion 196. In the third example, as shown in Figure 47A, when the tip of the lid 120 is facing upward, the lid-penetration portion 193 is formed to form a first gripping structure reinforcement portion 196A with the base end BP positioned on the upper side and the tip end TP positioned on the lower side, and a second gripping structure reinforcement portion 196B with the base end BP positioned on the upper side and the tip end TP positioned on the lower side, as the gripping structure reinforcement portion 196. In Figure 47A, the lid-penetration portion 193 is formed with an H-shaped slit structure. In the third example, as shown in Figure 47B, a structure that reinforces the structure of the gripping structure portion 194 described in the first and second examples can be formed, thereby achieving the associated effects.

[0173] [10-4 Reference Example] In the bag 10 according to the tenth embodiment, the above-described lid-penetrating portion 193 and main body-penetrating portion 195 may be provided in a bag 10 obtained by omitting the position restricting member 30 from the bags 10 of the first to fourth embodiments (i.e., a bag constituted only by the main body 20 as shown in FIG. 31 ) (reference example). In the case of the reference example, an adhesive placement portion 179 for closing the opening 24 may be provided as shown in FIG. 32. The adhesive placement portion 179 for closing the opening 24 is disposed on the upper end side of the peripheral wall portion 21 and on the inner surface 21A side of the peripheral wall portion 21. An example of this adhesive placement portion 179 is a double-sided adhesive tape.

[0174] 54A, 54B, 54C, and 54D, a bag 10 according to an eleventh embodiment may be the bag of any one of the first to tenth embodiments, provided with a small piece portion 220 and a peelable portion 221. Figures 54A to 54D are diagrams for explaining one example of the eleventh embodiment.

[0175] The bag 10 according to the eleventh embodiment has a main body 20. The main body 20 has a bottom 22 and a peripheral wall 21 connected to the bottom 22 at the periphery of the bottom 22. The peripheral wall 21 has a pair of opposing wall surfaces 25, namely, a first wall surface 25A and a second wall surface 25B. The main body 20 forms a space 23 surrounded by the bottom 22 and the peripheral wall 21 and capable of accommodating contents, and an opening 24 through which the contents are inserted into the space 23. The examples of Figures 54A to 54C show an example in which the peripheral wall 21 has a pair of opposing wall surfaces 25 and is provided with a small piece portion 220 and a peelable portion 221.

[0176] 54, the pair of opposing wall surfaces 25 of the peripheral wall 21 are referred to as a first wall surface 25A and a second wall surface 25B for convenience. That is, the first wall surface 25A and the second wall surface 25B are specified merely for convenience of explanation, and the terms first wall surface 25A and second wall surface 25B may be interchanged.

[0177] (Small Piece Portion) The bag body 10 according to the tenth embodiment has a small piece portion 220 on the peripheral wall portion 21. The small piece portion 220 has an adhesive-adhering surface 223 on which an adhesive material is arranged. The adhesive-adhering surface 223 of the small piece portion 220 is formed in a region of the small piece portion 220 that can face the inner surface of the wall surface portion 25 connected to the small piece portion 220 and a region that can face the outer surface of the wall surface portion 25 that faces the wall surface portion 25 connected to the small piece portion 220 when the small piece portion 220 is rotated around the fixed end 226 of the small piece portion 220 as an axis. Specifically, in the examples of FIGS. 54A to 54D , the small piece portion 220 is formed as a portion extending from the first wall surface portion 25A. The adhesive application surface 223 of the small piece portion 220 is formed in an area that can face the inner surface of the first wall portion 25A and also face the outer surface of the second wall portion 25B that faces the first wall portion 25A when the small piece portion 220 is rotated around the fixed end 226 of the small piece portion 220 as an axis.

[0178] The small piece portion 220 has a fixed end 226 fixed to the peripheral wall portion 21 and a free end 227 that is displaceable relative to the peripheral wall portion 21. The small piece portion 220 is configured such that the free end 227 can rotate around at least the fixed end 226 as an axis. In the example of FIG. 54 , the small piece portion 220 has the fixed end 226 at a part of the upper end 225 of the first wall surface portion 25A, and is formed as a portion extending in a generally rectangular shape from the upper end 225 of the first wall surface portion 25A, with the tip of the extending portion (the position on the tip side of the small piece portion 220) serving as the free end 227. In the example of FIG. 54 , the small piece portion 220 is formed from the same material as the first wall surface portion 25A, and can be bent near the fixed end 226 of the small piece portion 220 so as to rotate the small piece portion 220 around the fixed end 226 as an axis. The small piece portion 220 has a generally rectangular shape. However, the small piece portion shown in FIG. 54 is an example, and the small piece portion is not limited to this example. For example, the small piece portion 220 may be a portion that extends from a predetermined position below the upper end 225 of the first wall surface portion 25A. Furthermore, the material of the small piece portion 220 may be different from the material of the first wall surface portion 25A.

[0179] The number of small piece portions 220 is not particularly limited. Furthermore, the shape of the small piece portions 220 is not particularly limited. In the examples of Figures 54A to 54D, two small piece portions 220 are formed. When a plurality of small piece portions 220 are provided, for example, the small piece portions 220 may be unevenly distributed on the first wall surface portion 25A, or some of the small piece portions 220 may be located on the first wall surface portion 25A and the other small piece portions 220 may be located on the second wall surface portion 25B.

[0180] (Adhesive Adhesion Surface) A layer 222 made of an adhesive material is formed on the small piece portion 220, and the surface of the layer 222 (the surface facing the small piece portion opposing surface 224) serves as the adhesive adhesion surface 223. The adhesive material forming the layer 222 is not particularly limited, and examples include starch-based glue and acrylic adhesive. When storing a container containing juice or coffee in the bag 10, or when storing food such as fries or hamburgers, it is preferable to use an adhesive that can be used for packaging food as the adhesive material.

[0181] (Removable portion) The removable portion 221 is a portion configured to be removably adhered to the small piece portion 220. In the removable portion 221, a surface configured of an area corresponding to the portion configured to be adhered to the small piece portion 220 is referred to as the small piece portion facing surface 224. Therefore, the removable portion 221 has the small piece portion facing surface 224. The small piece portion facing surface 224 can be specified as a predetermined area at a position that can face the adhesive-adhering surface 223.

[0182] The releasable portions 221 are provided in the bag 10 at positions that avoid exposure to the outside of the main body 20. By providing the releasable portions 221 in such positions, even when the opening 24 of the bag 10 is closed using the small piece 220, the releasable portions 221 are prevented from being exposed to the outside of the bag 10, thereby improving the appearance of the bag 10. Note that, when a separate member (a member separate from the main body 20) such as a patch 251 (described later) is provided on the inner surface of the main body 20, the positions that avoid exposure to the outside of the main body 20 also include positions determined on the surface of the separate member. For example, as shown in FIG. 62C , at least a portion of at least one releasable portion 221 may be positioned at the patch 251. Note that FIG. 62C also serves as a diagram illustrating another example of a bag 10 according to a fifth variation of the eleventh embodiment (described later).

[0183] The peelable portion 221 has a peelable layer 228. Examples of the material of the peelable layer 228 include silicone resin. It is preferable that a sealing layer be provided between the peelable layer 228 and the member (member forming the wall portion 25) located on the back side of the peelable layer 228 to prevent the compound forming the peelable layer 228 from penetrating. It is also preferable that the surface of the peelable layer 228 forms the small piece portion opposing surface 224.

[0184] 55A to 55C , in the bag 10, it is possible to form a structure in which the expansion of the opening 24 is restricted by the small piece portion 220 when the small piece portion 220 is peeled from the peelable portion 221. That is, in the bag 10, when at least a portion of the small piece portion 220 is peeled from the peelable portion 221 and bent, the small piece portion 220 can be adhered to the peripheral wall portion 21 in the area of ​​the adhesive-attached surface 223 so as to prevent movement that separates the first wall surface portion 25A and the second wall surface portion 25B. Figures 55A to 55C are diagrams for explaining a process of forming a structure in which the expansion of the opening 24 is restricted by the small piece portion 220.

[0185] A structure in which the small piece portion 220 restricts the expansion of the opening 24 can be formed as follows: The bag 10 is changed from a state in which the small piece portion 220 is adhered to the peelable portion 221 as shown in Fig. 54D to a state in which the small piece portion 220 is peeled off from the peelable portion 221 as shown in Fig. 55A and Fig. 55B. In Fig. 55A and Fig. 55B, the small piece portion 220 is positioned directly above the wall portion 25, but this is just one example.

[0186] Furthermore, small piece portion 220 is bent (portion of small piece portion 220 is folded back) so that adhesive surface 223 faces the outer surface of wall portion 25 (second wall portion 25B in FIG. 55C ) that faces wall portion 25 (first wall portion 25A in FIG. 55C ) connected to small piece portion 220. Then, adhesive surface 223 of small piece portion 220 is bonded to wall portion 25. At this time, movement separating first wall portion 25A and second wall portion 25B, which are wall portions 25, is prevented (i.e., movement separating the upper ends of first wall portion 25A and second wall portion 25B is restricted). Here, the restriction on movement separating the upper ends of first wall portion 25A and second wall portion 25B indicates that the expansion of opening 24 is restricted.

[0187] [11-2 Actions and Effects] In conventional bags, in order to prevent unintended enlargement of the opening 24, a separate sealing material is prepared and attached to the peripheral wall 21, thereby closing the opening 24. However, this requires the work of preparing a separate sealing material and the inventory management of the separately prepared sealing material, which reduces workability.

[0188] According to the bag body 10 of the eleventh embodiment, the small piece portion 220 having the adhesive-adhering surface 223 is provided in advance on the main body 20, which eliminates the need to prepare a separate sealing material and eliminates the need to manage the inventory of the sealing material. Furthermore, the adhesive-adhering surface 223 of the small piece portion 220 is not only temporarily fixed (adhered so as to be removably attached) by the releasable portion 221, but also prevents the releasable portion 221 from being exposed to the outside of the bag body 10, thereby preventing a deterioration in the appearance due to the releasable portion 221 being unintentionally exposed.

[0189] [11-3 Modifications] (Modification 1) In the bag 10 according to the eleventh embodiment, as shown in FIG. 56A , an adhesive piece 230 formed separately from the peripheral wall portion 21 may be adhered to the peripheral wall portion 21, and a portion of the adhesive piece 230 may form the small piece portion 220. This configuration is referred to as Modification 1 of the eleventh embodiment. FIG. 56A is a cross-sectional view illustrating a main portion of the bag 10 according to Modification 1 of the eleventh embodiment. FIG. 56A illustrates a cross-sectional view of the bag according to Modification 1 of the eleventh embodiment, corresponding to the cross-sectional view of FIG. 55A . For ease of explanation, FIG. 56A illustrates a state in which the adhesive-attached surface 223 and the small piece-facing surface 224 are separated. When unused, it is preferable that the adhesive-attached surface 223 and the small piece-facing surface 224 are adhered to each other.

[0190] The adhesive piece 230 has a predetermined portion on one end adhered to the wall surface portion 25 (first wall surface portion 25A in the example of FIG. 56A ), and the portion on the other end that is not adhered to the wall surface portion 25 and extends from the wall surface portion 25 forms the small piece portion 220. The portion of the adhesive piece 230 that is different from the small piece portion 220 is referred to as the fixing portion 240. The adhesive surface between the fixing portion 240 of the adhesive piece 230 and the wall surface portion 25 is the same surface as the surface that forms the adhesive application surface 223. Note that the phrase "not adhered to the wall surface 25" used here refers to a state in which the adhesive application surface 223 of the small piece portion 220 is not adhered to the outer surface of a specific wall surface portion 25. The specific wall surface portion 25 refers to the wall surface 25 that faces the wall surface 25 to which the adhesive piece 230 is adhered at a predetermined portion on one end. In the example of Fig. 56A, the specific wall portion 25 is a second wall portion 25B. In the example of Fig. 56, the adhesive piece 230 has an adhesive layer 222 on at least one surface of a piece base sheet 231, and the portion where the layer 222 is formed is the small piece portion 220. The adhesive piece 230 is adhered to the wall portion 25 in a predetermined area defined by the portion excluding the small piece portion 220, and in an area defined on the same side of the surface of the piece base sheet 231 as the surface where the layer 222 is formed. It is preferable that the upper end of the adhesive piece 230 adhered to the wall portion 25 also serves as the fixed end 226 of the small piece portion 220.

[0191] The adhesive piece 230 is adhered to the surface of the wall portion 25 opposite to the surface on which the releasable portion 221 is formed. When the bag body 10 is unused (before the state in which the expansion of the opening 24 is restricted is formed), the adhesive piece 230 is bent so that the adhesive-adhering surface 223 of the small piece portion 220 of the adhesive piece 230 faces the small piece-facing surface 224 of the releasable portion 221. The adhesive-adhering surface 223 of the adhesive piece 230 is adhered to the small piece-facing surface 224 so as to be releasably reattachable.

[0192] (Creating a state in which the expansion of the opening 24 is restricted) In Modification 1 of the eleventh embodiment, the small piece portion 220 of the adhesive piece 230 is bent so that the adhesive-adhering surface 223 faces the outer surface of the wall portion 25 (second wall portion 25B in FIG. 56A ) that faces the wall portion 25 (first wall portion 25A in FIG. 56A ) that is connected to the small piece portion 220. Then, the adhesive-adhering surface 223 of the small piece portion 220 is adhered to the wall portion 25. At this time, the first wall portion 25A and the second wall portion 25B, which are the wall portion 25, are prevented from moving apart, thereby creating a state in which the expansion of the opening 24 is restricted.

[0193] (Variation 2) In the bag body 10 according to the eleventh embodiment, as shown in FIG. 56B , the releasable portion 221 may be formed of a release paper 235 formed separately from the peripheral wall portion 21. This configuration is referred to as Variation 1 of the eleventh embodiment. FIG. 56B is a cross-sectional view illustrating a main portion of the bag body 10 according to Variation 1 of the eleventh embodiment. FIG. 56B shows a cross-sectional view of the bag body according to Variation 1 of the eleventh embodiment, corresponding to the cross-sectional view of FIG. 55B . For ease of explanation, FIG. 56B illustrates a state in which the adhesive-attached surface 223 and the small piece portion-opposing surface 224 are separated. When the bag body 10 is unused, it is preferable that the adhesive-attached surface 223 and the small piece portion-opposing surface 224 are adhered to each other.

[0194] The release paper 235 has a structure in which a release layer 228 is formed on at least one surface of a backing paper 236. The release layer 228 forms the small piece portion facing surface 224. The releasable portion 221 shown in FIG. 56B is formed by adhering the release paper 235 to the peripheral wall portion 21 with the surface of the backing paper 236 opposite the surface on which the release layer 228 is formed facing the peripheral wall portion 21. However, this does not mean that the portion to which the release paper 235 is adhered is limited to the peripheral wall portion 21. For example, when a handle member is provided on the bag body 10 as described below, the release paper 235 may be adhered to a patch that secures the handle member to the bag body 10.

[0195] (Variation 3) In a bag according to Variation 2 of the 11th embodiment, as shown in Figures 57A to 57D, an adhesive piece 230 formed separately from the peripheral wall portion 21 is adhered to the peripheral wall portion 21, a part of the adhesive piece 230 forms the small piece portion 220, and a release paper 235 may adhere the surface opposite to the small piece portion opposing surface 224 to the adhesive piece 230. This configuration is referred to as Variation 3 of the 11th embodiment. Figures 57A to 57D are diagrams for explaining the main parts of a bag 10 according to Variation 1 of the 11th embodiment.

[0196] As in the first modification, the adhesive piece 230 has a predetermined portion on one end adhered to the wall surface portion 25 (first wall surface portion 25A in the example of FIG. 56A ), and the portion on the other end that is not adhered to the wall surface portion 25 and that extends from the wall surface portion 25 forms the small piece portion 220. However, of the surfaces of the adhesive piece 230, the surface that adheres between the fixing portion of the adhesive piece 230 and the wall surface portion 25 is a surface that is different from the surface on which the adhesive application surface 223 is formed.

[0197] Similar to the second modification, the release paper 235 has a structure in which a release layer 228 is formed on at least one surface of a backing paper 236. However, the release paper 235 is adhered to the adhesive piece 230 on the surface opposite to the small piece portion facing surface 224, on which the release layer 228 is formed. In this case, the release paper 235 is adhered to the surface of the adhesive piece 230 on which the adhesive application surface 223 is formed. By adhering at least the release paper 235 to the bag body 10 via the adhesive piece 230, the release paper 235 forms the releasable portion 221.

[0198] When the bag 10 is unused, before the state in which the expansion of the opening 24 is restricted is reached, the adhesive piece 230 is bent so that the adhesive-adhering surface 223 of the small piece portion 220 of the adhesive piece 230 faces the small piece portion-opposing surface 224 of the releasable portion 221, as in Modification 1. Moreover, the adhesive piece 230 is adhered to the small piece portion-opposing surface 224 at the adhesive-adhering surface 223 so as to be releasable.

[0199] (Creating a state in which the expansion of the opening 24 is restricted) In the bag body 10 relating to variant example 3 of the 11th embodiment, as shown in Figures 58A to 58C, it is possible to form a structure in which the small piece portion 220 restricts the expansion of the opening 24 when the small piece portion 220 is peeled off from the peelable portion 221.

[0200] In Modification 3 of the eleventh embodiment, as shown in Figure 58C etc., small piece portion 220 of adhesive piece 230 is bent so that adhesive application surface 223 faces the outer surface of wall surface portion 25 (second wall surface portion 25B in Figure 56C) that faces wall surface portion 25 (first wall surface portion 25A in Figure 58C) connected to small piece portion 220. Then, adhesive application surface 223 of small piece portion 220 is adhered to wall surface portion 25. At this time, movement of first wall surface portion 25A and second wall surface portion 25B, which are wall surface portions 25, away from each other is prevented, thereby creating a state in which expansion of opening 24 is restricted.

[0201] (Variation 4) In a bag according to Variation 2 of the eleventh embodiment, as shown in Figures 59A to 59D, an adhesive piece 230 formed separately from the peripheral wall 21 is adhered to the peripheral wall 21, and a part of the adhesive piece 230 forms the small piece 220, with the adhesive piece adhered to the outer surface of the peripheral wall and the release paper adhered to the inner surface of the peripheral wall. This configuration is referred to as Variation 4 of the eleventh embodiment. Figures 59A to 59D are diagrams for explaining the main parts of a bag 10 according to Variation 4 of the eleventh embodiment.

[0202] In the bag body 10 according to variant example 4 of the 11th embodiment, the small piece portion 220 has a structure similar to that of the small piece portion 220 shown in variant example 1, and the peelable portion 221 has a structure similar to that of the peelable portion 221 shown in variant example 2, so detailed explanations are omitted.

[0203] With regard to the bag body 10 relating to variant example 4 of the 11th embodiment, when the bag body 10 is unused (before the state in which the expansion of the opening 24 is restricted is formed), as in variant examples 1 and 2, etc., the adhesive piece 230 is bent so that the adhesive-adhering surface 223 of the small piece portion 220 of the adhesive piece 230 faces the small piece portion opposing surface 224 of the peelable portion 221, and the adhesive-adhering surface 223 is adhered to the adhesive-adhering surface 223 so as to be easily peelable again.

[0204] (Creating a state in which the expansion of the opening 24 is restricted) In the bag body 10 relating to variant example 4 of the 11th embodiment, as shown in Figures 60A to 60C, it is possible to form a structure in which the small piece portion 220 restricts the expansion of the opening 24 when the small piece portion 220 is peeled off from the peelable portion 221.

[0205] In the fourth modification of the eleventh embodiment, as shown in Figure 60C and other figures, the small piece portion 220 of the adhesive piece 230 is bent so that the adhesive-adhering surface 223 faces the outer surface of the wall portion 25 (second wall portion 25B in Figure 60C) that faces the wall portion 25 (first wall portion 25A in Figure 60C) that is connected to the small piece portion 220. Then, the adhesive-adhering surface 223 of the small piece portion 220 is adhered to the wall portion 25. At this time, the first wall portion 25A and the second wall portion 25B, which are the wall portions 25, are prevented from moving apart, so that a state is created in which the expansion of the opening 24 is restricted.

[0206] (Variation 5) As shown in Fig. 61A and Fig. 61B , the bag 10 according to the eleventh embodiment may be provided with a handle member 250. This configuration is referred to as Variation 5 of the eleventh embodiment. Figs. 61A and 61B are diagrams for explaining one example of Variation 5 of the eleventh embodiment. In the example of Fig. 61 , the handle member 250 is fixed to the inner surface of the bag 10 (the inner surface of the main body 20) slightly below the upper end of the main body 20 by attaching a patch 251 that fixes the handle member 250 to the bag 10 to the bag 10 with an adhesive or the like. However, this does not prohibit the handle member 250 from being fixed to the outer surface of the main body 20. The lower end of the handle member 250 is located slightly below the upper end of the main body 20, and a portion of the handle member 250 is located above the upper end of the main body 20. The portion of the handle member 250 located above the upper end of the main body 20 can function as a grip portion that can be grasped by a user. The shape of the handle member 250 is not particularly limited, and although the handle member 250 is formed in a U-shape as a whole in the examples of FIGS. 61A and 61B , this is merely an example. In Modification 5 of the eleventh embodiment, in the example of FIGS. 61A and 61B , the release paper 235 may be adhered to the bag body 10 at a position that avoids the pad 251, so that the releasable portion 221 may be formed at a position that avoids the pad 251. However, as shown in FIG. 61C , for at least some of the release papers 235, at least a portion of the release paper 235 may be adhered to the pad 251, so that at least a portion of the releasable portion 221 may be formed in an area that overlaps the pad 251. In addition, at least a portion of the peelable portion 221 may be formed in an area overlapping the pad 251, which also applies when the peelable portion 221 is not formed from the release paper 235, but rather the release layer 228 is formed on the inner surface of the main body 20.

[0207] (Variation 6) In the bag according to the eleventh embodiment, as shown in FIGS. 62A and 62B , a grippable tab 241 may be provided extending from the free end 227 of the small piece 220. This configuration is referred to as Variation 6 of the eleventh embodiment. FIGS. 62A and 62B are diagrams illustrating the main components of the bag 10 according to Variation 6 of the eleventh embodiment. The dimensions and shape of the tab 241 extending from the free end 227 of the small piece 220 are not particularly limited, but it is preferable that the tab 241 has a size and shape that allows the user to grip it with their fingers. Furthermore, it is preferable that the tab 241 avoids forming an adhesive surface 223. In the bag according to the eleventh embodiment, the provision of the tab 241 reduces the possibility of the user touching the adhesive surface 223, and allows the adhesive surface 223 of the small piece 220 to be adhered to the wall portion 25 so as to restrict the expansion of the opening of the bag 10.

[0208] In the bag 10 according to the sixth modification of the eleventh embodiment, as shown in FIGS. 63A and 63B , the portion of the small piece 220 on the free end 227 side (the portion corresponding to the tab 241) at the base end of the tab 241 may be folded upward. In FIGS. 63A and 63B , reference numeral 242 denotes a folded portion formed by folding the tab 241 upward. When the folded portion 242 is formed and the tip of the tab 241 faces upward, it is preferable that at least a portion of the tab 241 be positioned above the upper end 225 of the peripheral wall 21 of the main body 20, as shown in FIGS. 63A and 63B . This configuration makes it easy to recognize the tab 241 from outside the bag 10. FIGS. 63A and 63B are diagrams illustrating the main parts of the bag 10 according to the sixth modification of the eleventh embodiment. Note that Modification 6 of the 11th embodiment may be applied to the bag body 10 according to any of Modifications 1 to 5 of the 11th embodiment. For example, Fig. 63C shows an example in which the configuration of Modification 6 of the 11th embodiment is applied to the bag body 10 according to Modification 3 of the 11th embodiment. Note that Fig. 63C shows an example in which the tip of the tab 241 is directed upward (an example in which a folded portion 242 is formed).

[0209] [11-4 Reference Example] In the bag body 10 of the 11th embodiment, the above-mentioned small piece portion 220 and peelable portion 221 may be provided in a bag body in which the position regulating member 30 is omitted from each of the bag bodies 10 of the first to sixth embodiments (i.e., a bag body 10 consisting only of the main body 20 as shown in Figure 31) (reference example).

[0210] The bag body 10 according to the reference example of the eleventh embodiment includes a bottom 22 and a peripheral wall 21 connected to the bottom 22 at the periphery of the bottom 22, and a main body 20 that defines a space 23 surrounded by the bottom 22 and the peripheral wall 21 and capable of accommodating contents, and an opening 24 through which the contents are inserted into the space 23. The peripheral wall 21 also includes a pair of opposing wall surfaces 25, namely, a first wall surface 25A and a second wall surface 25B. The peripheral wall 21 also includes a small piece 220 having an adhesive-adhering surface 223 on which an adhesive material is disposed, and the small piece 220 has a fixed end 226 fixed to the peripheral wall 21 and a free end 227 that is displaceable relative to the peripheral wall 21. Furthermore, the free end 226 of the small piece portion 220 can be rotated around at least the fixed end 226 as an axis, and a releasable portion 221 is provided, which has a small piece portion facing surface 224 at a position opposite to the adhesive-attached surface 223 and can be releasably attached to the small piece portion 220 at the small piece portion facing surface 224. In the bag body 10 according to the reference example of the eleventh embodiment, the releasable portion 221 is provided at a position that avoids exposure to the outside of the main body 20. Then, when at least a part of the small piece portion 220 is peeled off from the releasable portion 221 and bent, the small piece portion 220 can be adhered to the peripheral wall portion 21 in the area of ​​the adhesive-attached surface 223 so as to prevent movement that separates the first wall surface portion 25A and the second wall surface portion 25B.

[0211] 32, an adhesive placement portion 179 for closing the opening 24 may be provided. The adhesive placement portion 179 for closing the opening 24 is disposed on the upper end side of the peripheral wall portion 21 and on the inner surface 21A side of the peripheral wall portion 21. An example of this adhesive placement portion 179 is a double-sided adhesive tape.

[0212] 65A and 65B, a bag 10 according to a 12th embodiment may be the bag 10 of any one of the first to tenth embodiments, provided with an inner surface joining piece 253 and a peelable portion 254. Figures 65A and 65B are diagrams for explaining one example of the 12th embodiment.

[0213] The bag 10 according to the twelfth embodiment has a main body 20. The main body 20 has a bottom 22 and a peripheral wall 21 connected to the bottom 22 at the periphery of the bottom 22. The peripheral wall 21 has a pair of opposing wall surfaces 25, namely, a first wall surface 25A and a second wall surface 25B. The main body 20 forms a space 23 surrounded by the bottom 22 and the peripheral wall 21 and capable of accommodating contents, and an opening 24 through which the contents are inserted into the space 23. The example of Figures 65A to 65B shows an example in which the peripheral wall 21 has a pair of opposing wall surfaces 25 and is provided with an inner surface joining piece 253 and a peelable portion 254.

[0214] 65, the pair of opposing wall surfaces 25 are referred to as a first wall surface 25A and a second wall surface 25B for convenience. That is, the first wall surface 25A and the second wall surface 25B are specified merely for convenience of explanation, and the terms first wall surface 25A and second wall surface 25B may be interchanged.

[0215] The releasable portion 254 is similar to the releasable portion 221 described in the description of the eleventh embodiment, and therefore a detailed description thereof will be omitted. In the example of Fig. 65, the releasable portion 221 may be formed of a release paper 235 formed separately from the peripheral wall portion 21, as described in the description of Modification 2 of the eleventh embodiment. The release paper 235 has a structure in which a release layer 228 is formed on at least one surface of a backing paper 236. In the releasable portion 254, the surface of the releasable portion 254 that faces the adhesive-adhering surface 223 is referred to as the opposing surface 255.

[0216] (Inner Surface Joint Piece) The bag body 10 according to the twelfth embodiment has an inner surface joint piece 253 attached to the peripheral wall portion 21. The inner surface joint piece 253 may be configured similarly to the adhesive piece 230 described in the description of the eleventh embodiment, except that it is joined to the inner surface of the peripheral wall portion 21 and positioned below the upper end of the peripheral wall portion 21 (a position below the upper end of either the upper end of the first wall portion 25A or the upper end of the second wall portion 25B, regardless of whether the opening 24 is open or closed). Therefore, the configuration of the inner surface joint piece 253 will be described using the same symbols and names as those used in the configuration of the adhesive piece 230. The example in Figure 65 shows a case in which the inner surface joint piece 253 is a member having a structure in which an adhesive layer 222 is formed on at least one side of a piece base sheet 231, similar to the adhesive piece 230.

[0217] Therefore, the inner joining piece 253 has an adhesive-adhering surface 223 on which an adhesive material is disposed. The portion of the inner joining piece 253 on which the adhesive-adhering surface 223 is formed is located in a region that can face the inner surface of the second wall surface portion 25B when the portion is rotated about the fixed end 253A of the inner joining piece 253, as shown in Figures 66A to 66D. The fixed end 253A is located approximately at the edge of the joining region between the inner joining piece 253 and the first wall surface portion 25A, and is located at an edge adjacent to the region where the adhesive-adhering surface 223 is formed. Figures 66A to 66D are diagrams illustrating the movement of the inner joining piece 253 when the inner joining piece 253 is used to restrict the expansion of the opening 24 of the bag 10.

[0218] As shown in Fig. 65A, in the bag body 10 according to the twelfth embodiment, an inner surface joining piece 253 formed separately from the peripheral wall portion 21 is adhered to the peripheral wall portion 21, and when not in use, the adhesive-attached surface 223 is in contact with the opposing surface 255. When in use, as shown in Figs. 66A to 66D, the adhesive-attached surface 223 and the opposing surface 255 are separated, and the adhesive-attached surface 223 is adhered to the inner surface of the second wall portion 25B. This restricts the expansion of the opening 24.

[0219] Furthermore, it is preferable that a predetermined gap be provided between the fixed end 253A of the inner joining piece 253 and the region where the adhesive-adhering surface 223 is formed. In this case, it is preferable that the gap between the fixed end 253A and the region where the adhesive-adhering surface 223 is formed is larger than the thickness of the inner joining piece 253. With such a gap, after the adhesive-adhering surface 223 is bonded to the inner surface of the second wall surface portion 25B, deformation that slightly shifts the second wall surface portion 25B and the first wall surface portion 25A in the lateral direction near the opening 24 of the bag body 10 can be tolerated, and it is expected that the positional deviation between the second wall surface portion 25B and the first wall surface portion 25A can be corrected.

[0220] [12-2 Reference Example] In the bag body 10 according to the twelfth embodiment, the above-described inner surface joining piece 253 and peelable portion 254 may be provided in a bag body obtained by omitting the position regulating member 30 from each of the bags of the first to tenth embodiments (i.e., a bag body consisting of only the main body as shown in FIG. 31) (reference example).

[0221] 67A and 67B, a bag 10 according to the 13th embodiment is the bag 10 of any one of the first to 12th embodiments, except that the main body 20 is made of a folded structure 260, and side edge adhesive portions 261 are provided on the folded structure 260 so as to satisfy specific conditions. Figures 67A and 67B are diagrams for explaining one example of the 13th embodiment.

[0222] The bag according to the thirteenth embodiment includes a main body 20. The main body 20 includes a bottom 22 and a peripheral wall 21 connected to the bottom 22 at its periphery. The peripheral wall 21 includes a pair of opposing wall surfaces 25 and a pair of opposing side wall surfaces 26. In the peripheral wall, each wall surface 25 is connected to the side wall surface 26 at its lateral edge. In the example shown in FIG. 67A , the peripheral wall 21 includes a first wall surface 25A and a second wall surface 25B as the pair of opposing wall surfaces 25. The main body 20 includes a space 23 surrounded by the bottom 22 and the peripheral wall 21 and capable of accommodating contents, and an opening 24 through which the contents are inserted into the space 23. The examples shown in FIGS. 67A and 67B illustrate an example in which the peripheral wall 21 includes a pair of opposing wall surfaces 25.

[0223] 67, the pair of opposing wall surfaces 25 of the peripheral wall 21 are referred to as a first wall surface 25A and a second wall surface 25B for convenience. That is, the first wall surface 25A and the second wall surface 25B are specified merely for convenience of explanation, and the terms first wall surface 25A and second wall surface 25B may be interchanged.

[0224] The main body 20 has at least one corner 28 on the inner surface of the peripheral wall 21, extending from the bottom 22 toward the opening 24. In the example of the main body 20 shown in Figure 67A, there are four boundary positions between the wall surface 25 and the side wall surface 26, and a corner 28 is formed at each boundary position.

[0225] 67 , the position restricting member 30 is joined to a predetermined position on the peripheral wall portion 21 of the main body 20. Since the main body 20 is composed of a folding structure 260, the position restricting member 30 is joined to the inner surface side of the folding structure 260.

[0226] (Folded Structure) The folded structure 260 constituting the main body 20 is a structure having a structure formed by folding a blank 500, and is defined as a structure having a structure corresponding to the peripheral wall portion 21 and the bottom portion 22. Here, the blank 500 can be defined as a sheet material formed into a shape corresponding to the main body 20, as shown in FIG. 67C . The blank 500 is also formed from a paper-based material. FIG. 67C is a plan view illustrating an example of the blank 500 forming the folded structure 260, i.e., the blank 500 forming the main body 20. The paper-based material constituting the blank 500 may be any paper-based material that can be used as the material of the main body 20. The material of the main body 20 is the same as the material of the main body 20 described in the first embodiment, and therefore detailed description thereof will be omitted.

[0227] (Side Edge Adhesion Portion) The folding structure 260 has a side edge adhesion portion 261 that adheres a first overlap structure corresponding portion 560A and a second overlap structure corresponding portion 560B (described later) to each other. The side edge adhesion portion 261 can be formed in the same manner as the blank material adhesion portion 551 described in the first embodiment, and is formed by adhering them to each other with an adhesive or the like. Furthermore, as shown in FIG. 67A , the folding structure 260 has the first overlap structure corresponding portion 560A and the second overlap structure corresponding portion 560B positioned in this order from the inner side of the folding structure 260, and the inner surface of the first overlap structure corresponding portion 560A is exposed to the "internal space of the folding structure 260," which becomes the space portion 23 of the main body 20. The layout of the side edge adhesive portion 261 is not particularly limited, and may be formed in a striped pattern as shown in Figure 68B, a grid pattern, or a dot pattern, or may be configured so that the adhesive surface extends over the entire surface (single-surface formation type) as shown in Figure 68A.

[0228] 67C has an outer peripheral edge 562 including an upper edge 563, a lower edge 564, and a set of blank side edges 565 (lateral side edges) when viewed in the thickness direction of the blank 500. The blank 500 has a portion corresponding to the peripheral wall 21 (peripheral wall corresponding portion 502) and a portion corresponding to the bottom 22 (bottom corresponding portion 501).

[0229] The blank upper edge 563 is the portion of the outer peripheral edge 562 that will form the opening 24 when the body 20 is formed using the folding structure 260. The blank lower edge 564 is the portion of the outer peripheral edge 562 that is formed on the opposite side of the blank upper edge 563. When the body 20 is formed using the folding structure 260, the blank lower edge 564 will be located at the bottom 22. A pair of blank side ends 565 are portions of the outer peripheral edge 562 that connect to the blank upper edge 563 and the blank lower edge 564, and the pair of blank side ends 565 are located on opposite sides of each other (separated in the longitudinal direction of the blank 500 in FIG. 66C ). The blank 500 has a pair of blank side ends 565: a first blank side end 565A and a second blank side end 565B.

[0230] The blank 500 has an overlapping structure corresponding portion 560. The overlapping structure corresponding portion 560 is defined as a portion for joining a predetermined portion inward from the first blank end 565A and a predetermined portion inward from the second blank end 565B when the folded structure 260 is formed from the blank 500. The overlapping structure corresponding portion 560 includes a first overlapping structure corresponding portion 560A and a second overlapping structure corresponding portion 560B. In the blank 500 shown in FIG. 67C , the first overlapping structure corresponding portion 560A is defined at a predetermined portion on the first blank end 565A side, and the second overlapping structure corresponding portion 560B is defined at a predetermined portion on the second blank end 565B side.

[0231] A first inward-facing region 566A and a second inward-facing region 566B are defined on the surface of the blank 500. The first inward-facing region 566A is defined as a region of the first overlapping structure corresponding portion 560A (a region on the surface of the first overlapping structure corresponding portion 560A) that faces the inside of the folding structure 260 (toward the space 23 in the main body 20). The second inward-facing region 566B is defined as a region of the second overlapping structure corresponding portion 560B (a region on the surface of the second overlapping structure corresponding portion 560B) that faces the inside of the folding structure 260 (toward the space 23 in the main body 20).

[0232] 67C, 68A, etc., a planned facing region IVR exists at a predetermined position on the blank piece 500. The planned facing region IVR is defined as a region on the blank piece 500 that is planned to face (be placed in) the position restricting member 30.

[0233] In the blank piece 500, at least one intended facing region IVR is determined so as to satisfy all of the following three conditions A, B, and C.

[0234] Condition A: The intended meeting area IVR is set to an area that avoids the second inward-facing area 566B.

[0235] Condition B: The intended facing region IVR is a region that crosses the corner-corresponding bending position 567 .

[0236] Condition C: One of the two side edges EGP of the intended facing region IVR is located in the first inward region 566A.

[0237] In the example of FIG. 67C, the planned meeting area IVR satisfies three conditions: condition A, condition B, and condition C.

[0238] (Process for forming folded structure from blank) The folded structure 260 can be formed, for example, by performing the process of folding the blank 500 and the process of adhering at predetermined portions as shown below. In the example shown in FIG. 67C , the blank 500 is made of a rectangular sheet. A position restricting member 30 is adhered to the intended facing region IVR of the blank 500. In FIG. 67 , the position restricting member 30 is made of a belt-shaped (strip-shaped) sheet, and the position restricting member 30 is adhered to the blank 500 at both ends in the longitudinal direction. The process of folding the blank 500 is performed using the blank 500 to which the position restricting member 30 is adhered.

[0239] The position where the blank 500 is folded at the portion corresponding to the corner 28 is defined as a corner-corresponding bending position 567, and in the process of folding the blank 500, the blank 500 is folded at the corner-corresponding bending position 567. In the example of Figure 66, the corner-corresponding bending position 567 is the portion identified by position PU1. Position PU2 shown in Figure 67C is the position of the fold line that becomes the fold portion for forming a gusset structure (a gusset that can constitute the main body gusset portion 29) when the folded structure 260 is viewed from the outer surface side in the folded structure state.

[0240] Furthermore, the first overlapping structure corresponding portion 560A and the second overlapping structure corresponding portion 560B of the blank 500 are overlapped with each other. At this time, the first overlapping structure corresponding portion 560A is disposed to face the second inward-facing region 566B of the second overlapping structure corresponding portion 560B, and the first inward-facing region 566A of the first overlapping structure corresponding portion 560A is exposed.

[0241] In the process of bonding the blank 500, the first overlapping structure corresponding portion 560A and the second overlapping structure corresponding portion 560B of the blank 500 are bonded to each other to form the side edge bonding portion 261. At this time, the blank 500 becomes a cylindrical structure 530. In the cylindrical structure 530, a position restricting member 30 is bonded onto the first inward region 566A of the first overlapping structure corresponding portion 560A.

[0242] The portion of the cylindrical structure 530 corresponding to the bottom 22 (bottom corresponding portion 501) is bent inward. In the examples of Figures 67C, 68A, etc., the bottom corresponding portion 501 has a first lower portion and a second lower portion. The first lower portion is defined as the portion (portion 501A) of the bottom corresponding portion 501 that extends below the portion corresponding to the side wall surface portion. There are a set (two) of first lower portions (portions 501A). The second lower portion is defined as the portion (portion 501B) of the bottom corresponding portion 501 that extends below the portion corresponding to the wall surface portion. There are a set (two) of second lower portions (portions 501A). In the blank 500, the first lower portions and the second lower portions are arranged alternately.

[0243] Of the cylindrical structure 530, the first lower portion (portion 501A) is bent inward (toward the center of the cylindrical structure (in the direction of arrow F2)), and the second lower portion (portion 501B) is also bent inward (toward the center of the cylindrical structure (in the direction of arrow F2)). At this time, the overlapping portions of portions 501A and 501B and the overlapping portions of two portions 501B are bonded together with an adhesive or the like. In this case, a folding structure 27 is formed in the bottom 22. A reinforcing sheet material or the like may also be attached to the bottom 22. In this way, a folded structure 260 is formed.

[0244] [13-2 Function and Effect] In conventional bags, the side edge adhesive portion is formed at or near the corner, which poses a problem that it is difficult to position the positioning member at the corner where the side edge adhesive portion is formed.

[0245] According to the bag body of the thirteenth embodiment, the positions at which the side end adhesive portion and the position regulating member 30 are placed in the blank material 500 are determined to be specific positions, and by making the positions of the side end adhesive portion and the position of the position regulating member 30 different, it is possible to form the side end adhesive portion and to position the position of the position regulating member 30 at the position of the corner portion 28.

[0246] [13-3 Modifications] (Modification 1) A specific blank 500 as shown below may be used for the bag body 10 according to the thirteenth embodiment. That is, as the specific blank 500, a blank 500 may be used in which the adhesive portion corresponding portion (A) and the attachment portion corresponding portion (B) are defined such that at least a portion of the adhesive portion corresponding portion (A) also serves as at least a portion of the adhesive portion corresponding portion (B), as shown in FIGS. 68A and 68B . Here, in the blank 500, the adhesive portion corresponding portion (A) is a portion of the first overlap structure corresponding portion 560A that corresponds to the side edge adhesive portion 261 (the portion indicated by reference numeral 571 (hatched portion) in FIGS. 68A and 68B ). The adhesive portion corresponding portion (B) is a portion of the blank 500 that corresponds to the portion where the position restricting member 30 and the folding structure 260 are joined (a portion 572 facing the joint margin portion 32). Such a configuration having a portion corresponding to the adhesive bond (A) and a portion corresponding to the attachment portion (B) is referred to as Modification 1 of the thirteenth embodiment. Figures 68A and 68B are plan views illustrating one example of a blank 500 forming the bag body 10 according to Modification 1 of the thirteenth embodiment.

[0247] According to variant example 1 of the thirteenth embodiment, when a process of forming a side end adhesive portion by bonding the first overlap structure corresponding portion and the second overlap structure corresponding portion using heat sealing or the like is carried out, heat sealing is also applied to the portion where the position control member and the blank material are joined, thereby forming a state in which the portion where the position control member and the blank material are joined is more strongly joined.

[0248] The adhesive portion corresponding portion (A) and the attachment portion corresponding portion (B) may completely overlap, or the adhesive portion corresponding portion (A) may include a part of the adhesive portion corresponding portion (B). The adhesive portion corresponding portion (A) may include the adhesive portion corresponding portion (B). Furthermore, these do not prohibit the adhesive portion corresponding portion (B) from including the attachment portion corresponding portion (A).

[0249] In Figure 68B, the side edge adhesive portion 261 is configured in a striped pattern with multiple linear adhesive portions. In this example, the adhesive portion corresponding portion (A) in the blank 500 is defined by a portion corresponding to the multiple linear adhesive portions, and the adhesive portion corresponding portion (B) is defined by a portion of one linear adhesive portion. Note that Variation 1 of the 13th embodiment does not prohibit the adhesive portion corresponding portion (A) and the adhesive portion corresponding portion (B) from being separated from each other in the bag body 10 according to the 13th embodiment, as shown in Figure 68C.

[0250] (Modification 2) As shown in the examples of Figures 69A and 69B, the bag body 10 according to the thirteenth embodiment may be provided with a handle structure 252 on the main body 20. This configuration is referred to as Modification 2 of the thirteenth embodiment. Figure 69A is a plan view illustrating one example of the bag body 10 according to Modification 2 of the thirteenth embodiment. Figure 69B is a plan view illustrating one example of a blank 500 forming the bag body 10 according to Modification 2 of the thirteenth embodiment.

[0251] The configuration in which the handle structure 252 is provided on the main body 20 is realized by adhering the handle structure 252 to the folding structure 260 .

[0252] The handle structure 252 is a structure combining a handle member 250 and a backing material 251. The same contents as those described in Modification 5 of the eleventh embodiment can be applied to the handle member 250 and the backing material 251, so detailed description will be omitted. In terms of the appearance of the main body 20, the handle member 250 is arranged so as to be partially exposed upward from the upper end of the peripheral wall portion 21, and the backing material 251 is arranged so as to cover the portion of the handle member 250 that faces the peripheral wall portion 21. The backing material 251 is adhered to the peripheral wall portion 21 and the handle member 250. The handle member 250 is also adhered to the peripheral wall portion 21 and the backing material 251.

[0253] (Blank) As shown in Fig. 69C, a specific region of the blank 500 forming the bag 10 according to the second modification of the thirteenth embodiment is defined as a handle bonding region 575. Fig. 69C is a plan view showing an example of the blank 500 forming the bag 10 according to the second modification of the thirteenth embodiment. The handle bonding region 575 indicates a region of the blank 500 corresponding to a region to which the handle structure 252 will be bonded. In the blank 500, the handle bonding region 575 is preferably defined as a region that does not cross the end ELN of the blank side end 565 when the folded structure 260 is in a state where it is folded. In the bag body 10 according to the second variant of the thirteenth embodiment, even if a handle structure 252 is provided on each of a set of wall portions 25 and a position regulating member 30 is provided on all corner portions 28 (if the bag body 10 is formed in a box-like shape as shown in Figure 69, even if a position regulating member 30 is provided on all of the four corner portions 28), the folded structure 260 can be formed by folding the blank material 500 after the position regulating member 30 and the handle structure 252 have been previously joined at a predetermined position thereon.

[0254] When the handle adhesive region 575 is defined in this manner, the handle structure 252 is adhered in place in the blank 500. This eliminates the need to perform a step of positioning the handle structure 252 after forming the folding structure 260, thereby simplifying the manufacturing process for the bag 10.

[0255] [14 Fourteenth Embodiment] [14-1 Configuration] As shown in the examples of Figures 70A, 70B, and 70C, the bag according to the fourteenth embodiment is the bag according to any one of the first to thirteenth embodiments, in which the main body 20 is formed from a folding structure 260, and the folding structure 260 is provided with an overlap structure (bottom overlap structure 580) and a lower end folded-back portion 581, which will be described later. Figures 70A to 70C are diagrams for explaining one example of the thirteenth embodiment.

[0256] The bag according to the fourteenth embodiment has a main body 20. The main body 20 has a bottom 22 and a peripheral wall 21 connected to the bottom 22 at its periphery. The peripheral wall 21 has a pair of opposing wall surfaces 25 and a pair of opposing side wall surfaces 26. In the peripheral wall 21, each wall surface 25 is connected to the side wall surface 26 at its side edge. In the example of Fig. 70A , the peripheral wall 21 has a pair of opposing wall surfaces 25, which are a first wall surface 25A and a second wall surface 25B. The main body 20 forms a space 23 surrounded by the bottom 22 and the peripheral wall 21 and capable of accommodating contents, and an opening 24 through which the contents are inserted into the space 23. The examples of FIGS. 70A to 70C show an example in which the peripheral wall portion 21 has a pair of wall surface portions 25 facing each other.

[0257] 70, the pair of opposing wall surfaces 25 of the peripheral wall 21 are referred to as a first wall surface 25A and a second wall surface 25B for convenience. That is, the first wall surface 25A and the second wall surface 25B are specified merely for convenience of explanation, and the terms first wall surface 25A and second wall surface 25B may be interchanged.

[0258] The main body 20 has at least one corner extending from the bottom toward the opening on the inner surface of the peripheral wall portion 21. In the example of the main body 20 shown in Fig. 70A, there are four boundary positions between the wall surface portion 25 and the side wall surface portion 26, and a corner 28 is formed at each boundary position.

[0259] 70 , the position restricting member 30 is joined to a predetermined position on the peripheral wall portion 21 of the main body 20. Since the main body 20 is composed of a folding structure 260, the position restricting member 30 is joined to the inner surface side of the folding structure 260.

[0260] (Folded Structure) The folded structure 260 constituting the main body 20 is a structure obtained by folding the blank 500 and is defined as a portion forming a structure corresponding to the peripheral wall 21 and the bottom 22. The blank 500 can be defined as a sheet material formed into a shape corresponding to the main body 20. The blank 500 is also formed from a paper-based material. The paper-based material constituting the blank 500 may be any paper-based material that can be used as the material of the main body 20. The material of the main body 20 is similar to the material of the main body 20 described in the first embodiment, and therefore detailed description thereof will be omitted. In the example shown in FIG. 70 , the folded structure 260 has a side edge bonding portion 261. The side edge bonding portion 261 is a structural portion formed by bonding a pair of blank side edges 565 of the blank 500. The layout of the side edge bonding portion 261 is not particularly limited. Specifically, the side edge bonding portion 261 may be configured similarly to the side edge bonding portion described in the thirteenth embodiment.

[0261] In the bag 10 according to the fourteenth embodiment, the folding structure 260 constituting the main body 20 has a first inner fold 582 and a second inner fold 583, and a bottom-side overlap structure 580 as an overlap structure formed in a portion corresponding to the bottom 22. In addition, in the folding structure 260, at least one lower end fold 581 of the pair of second inner folds 583 is formed, and at least a portion of the lower end fold 581 is disposed in the bottom-side overlap structure 580 (is located in the bottom-side overlap structure 580).

[0262] (First inward folding portion) The first inward folding portion 582 is defined as a portion formed by folding a first lower portion (portion 501A) of the blank 500, which will be described later, inward of the folding structure 260. Two first lower portions (a set) are defined in the blank 500, and a set of first inward folding portions 582 is formed in the folding structure 260.

[0263] (Second Inward Folding Portion) The second inward folding portion 583 is defined as a portion formed by folding a second lower portion (portion 501B) of the blank 500 (described later) inwardly of the folding structure 260. In the example shown in Figure 70, the second inward folding portion 583 is defined by folding the second lower portion on the underside of the first lower portion (so as to cover a portion of the underside of the first lower portion or the entire underside of the first lower portion). Two second lower portions (a set) are defined in the blank 500, and a set of second inward folding portions 583 is formed in the folding structure 260.

[0264] (Diagonal Fold Portion) In the example of the folded structure 260 shown in FIG. 70 , the second inward folded portion 583 is formed with a diagonal folded portion 584. The diagonal folded portion 584 is defined as a structural portion formed by folding the blank 500 around a straight line extending diagonally relative to the lower edge of the blank's lower edge 564 as a folding axis. The diagonal folded portion 584 is formed to overlap the side edge portion of the second inward folded portion 583. In FIG. 70 , the diagonal folded portion 584 is formed so that the side edge portion of the second inward folded portion 583 has an obliquely inclined shape. That is, in the example of the bag 10 shown in FIG. 70 , the folded structure 260 is configured so that the width of the second inward folded portion 583 decreases from the base end of the second inward folded portion 583 toward the lower end of the blank's lower edge 564. 70, the second inward folding portion 583 is connected to the first inward folding portion 582 at the edge of the diagonal folding portion 584. That is, the outer edge of the diagonal folding portion 584 and the outer edge of the first inward folding portion 582 are common to each other.

[0265] (Lower-End Folded Portion) At least one of the second inward folded portions 583 has a lower-end folded portion 581 formed by folding back a predetermined portion of the lower edge portion 564 of the blank. The lower-end folded portion 581 may be a portion folded toward the inside of the folded structure 260 (inner folded portion), or may be a portion folded toward the outside of the folded structure 260 (outer folded portion). In the example shown in FIG. 70 , the lower-end folded portion 581 is formed on one of the two second inward folded portions 583, and the lower-end folded portion 581 is formed as a "portion folded toward the inside of the folded structure 260." At least a portion of the lower-end folded portion 581 is disposed in the bottom overlap structure 580. That is, at least a portion of the lower-end folded portion 581 is located in the bottom overlap structure 580. In the example shown in FIG. 70, the entire lower end folded portion 581 is disposed in the bottom overlap structure portion 580 .

[0266] (Bottom Side Overlap Structure) The bottom side overlap structure 580 is defined as an overlap structure in which a pair of the second inner folds 583 overlap each other in a plan view of the main body 20 .

[0267] (Blank) The blank 500 shown in FIG. 71A has an upper edge 563 and a lower edge 564 as an outer peripheral edge 562, when the thickness direction of the blank 500 is the viewing direction. In the blank 500, the outer peripheral edge 562 refers to a predetermined portion including the outer peripheral edge of the blank 500, that is, a predetermined portion defined as "a predetermined portion extending from the outer peripheral edge to a position slightly inward from the outer peripheral edge." The blank 500 has a peripheral wall portion 502 defined by a portion corresponding to the peripheral wall 21 and a bottom portion 501 defined by a portion corresponding to the bottom 22. The blank 500 shown in FIG. 71A also has a pair of blank side edges 565. FIG. 71A is a plan view illustrating an example of a blank 500 for forming the bag 10 according to the thirteenth embodiment. Note that FIG. 71A illustrates an example in which a blank having the configuration described in the thirteenth embodiment is used. The same is true for Figure 73A.

[0268] The blank upper edge 563, blank lower edge 564, and pair of blank side ends 565 can be defined in the same manner as in the thirteenth embodiment. That is, the blank upper edge 563 is the portion of the outer peripheral edge 562 that will form the opening 24 when the main body 20 is formed using the folding structure 260. The blank lower edge 564 is the portion of the outer peripheral edge 562 that is formed on the opposite end side from the blank upper edge 563. The blank lower edge 564 is the portion of the outer peripheral edge 562 that will be located at the bottom 22 when the main body 20 is formed using the folding structure 260. The pair of blank side ends 565 are the portions of the outer peripheral edge 562 that are connected to the blank upper edge 563 and the blank lower edge 564, and are located on opposite ends of each other. The blank 500 has a pair of blank side ends 565, which are a first blank side end 565A and a second blank side end 565B.

[0269] In the blank 500, the bottom corresponding portion 501 has a first lower portion and a second lower portion. The first lower portion is defined as a portion (portion 501A) of the bottom corresponding portion 501 that extends below a portion corresponding to the side wall surface portion. There are a set (two) of first lower portions. The second lower portion is defined as a portion (portion 501B) of the bottom corresponding portion 501 that extends below a portion corresponding to the wall surface portion. There are a set (two) of second lower portions. In the blank 500, the first lower portions and the second lower portions are arranged alternately.

[0270] (Process for forming folded structure from blank) The folded structure 260 can be formed, for example, by performing the process of folding the blank 500 and the process of adhering at predetermined portions as shown below. In the example shown in FIG. 71A , the blank 500 is made of a rectangular sheet. Position restricting members 30 are adhered to predetermined positions of the blank 500. In FIG. 71A , the position restricting members 30 are made of a belt-shaped (strip-shaped) sheet, and the position restricting members 30 are adhered to the blank 500 at both ends in the longitudinal direction. The process of folding the blank 500 is performed using the blank 500 to which the position restricting members 30 are adhered.

[0271] The position where the blank 500 is bent at a portion corresponding to the corner 28 is defined as a corner-corresponding bending position 567, and in the process of bending the blank 500, the blank 500 is bent at the corner-corresponding bending position 567 (in the direction of arrow F1 in FIG. 71 ). In the example of FIG. 71A , the corner-corresponding bending position 567 is defined at a position corresponding to the corner 28 (position PU1 in FIG. 71A ), as described in the thirteenth embodiment. Position PU2 shown in FIG. 71A is the same as described in the thirteenth embodiment.

[0272] In the process of bonding the blanks 500, the two blank side ends 565 of the blanks 500 are overlapped and bonded to each other in a predetermined region where the two blank side ends 565 overlap, thereby forming the side end bonded portion 261. At this time, as shown in Figure 71B, the blanks 500 become a cylindrical structure 530. Figure 71B is a perspective view schematically showing an example of the cylindrical structure 530.

[0273] A portion of cylindrical structure 530 corresponding to bottom 22 (bottom corresponding portion 501) is bent inward as shown in Figures 71B, 72A, and 72B. Figures 72A and 72B are perspective views for explaining the process of bending bottom corresponding portion 501 of cylindrical structure 530.

[0274] In the example of Figure 71B, the first lower portion (portion 501A) of the cylindrical structure 530 is bent inward (toward the center of the cylindrical structure 530 (direction of arrow F2)). Each pair of first lower portions is bent. At this time, as shown in Figure 72A, a pair of first inward folded portions 582 is formed as a folded structural portion of the pair of first lower portions. In addition, in conjunction with the formation of the first inward folded portion 582, an edge portion of portion 501B is bent diagonally to form a diagonal folded portion 584.

[0275] At least one of the second lower portions (portions 501B) is folded back at a predetermined portion of the blank lower edge 564. At this time, the folded back portion forms a lower end folded portion 581, as shown in FIG. 72B.

[0276] Then, the second lower portion (portion 501B) is folded inward (toward the center of the cylindrical structure (in the direction of arrow F2)). Each pair of second lower portions is folded. At this time, as shown in FIG. 70C , a pair of second inward folded portions 583 is formed as a folded structure of the pair of second lower portions. At this time, an overlapping portion between portion 501A and portion 501B and an overlapping portion between the two portions 501B are formed. The overlapping portion between the two portions 501B (i.e., the overlapping portion between the pair of second inward folded portions 583) becomes the bottom-side overlapping structure portion 580. In the example of FIG. 70C , in a plan view of the folded structure 260, the lower-end folded portion 581 is located at the bottom-side overlapping structure portion 580.

[0277] At least one of the overlapping portion between the portion 501A and the portion 501B and the overlapping portion between the two portions 501B (bottom-side overlapping structure 580) is bonded. Preferably, both the overlapping portion between the portion 501A and the portion 501B and the overlapping portion between the two portions 501B (bottom-side overlapping structure 580) are bonded. In this case, a bonding method using an adhesive or the like can be suitably adopted. This fixes the structure of the folding structure 260, and forms the portion that will become the bottom 22. This forms the folding structure 260 that constitutes the main body 20. Note that it is not prohibited to further attach a reinforcing sheet material or the like to the portion that will become the bottom 22.

[0278] [14-2 Actions and Effects] Increasing the strength of the bottom of a conventional bag is required. Increasing the strength of the bottom is important because it makes it less likely for the bottom to lose its shape or tear, even when a heavy content, such as a container filled with a beverage, is placed in the cavity of the bag.

[0279] In the bag according to the fourteenth embodiment, a lower overlap structure 580 is formed in the folded structure 260 constituting the main body 20 at a portion corresponding to the bottom 22, and a lower end folded-back portion 581 is also formed. This strengthens the structure of the bottom 22. Therefore, the bag according to the fourteenth embodiment can make the bottom 22 less likely to lose its shape or tear.

[0280] [14-3 Modifications] (Modification 1) In the bag 10 according to the fourteenth embodiment, as shown in FIG. 73B , the second inwardly folded portion 583 may be omitted from the diagonal folded portion 584. This configuration is referred to as Modification 1 of the fourteenth embodiment. FIG. 73B is a bottom view illustrating the bottom 22 of one example of the bag 10 according to Modification 1 of the fourteenth embodiment. Modification 1 of the fourteenth embodiment can be specifically realized, for example, by dividing the first lower portion (portion 501A) and the second lower portion (portion 501B) of the blank 500 by a cut 585 or the like, as shown in FIG. 73A . When the first lower portion and the second lower portion are divided, the first inwardly folded portion 582 and the second inwardly folded portion 583 can be formed in a divided state.

[0281] [14-4 Reference Example] In a bag 10 according to a fourteenth embodiment, the position restricting member is omitted from the bags of the first to thirteenth embodiments (i.e., a bag 10 configured only with a main body 20 as shown in FIG. 31 ), and the folding structure described above may be provided with an overlapping structure and a lower end folded portion (described later) (reference example). In the case of the reference example, as shown in FIG. 32 , an adhesive placement portion 179 for closing the opening 24 may be provided. The adhesive placement portion 179 for closing the opening 24 is disposed on the upper end side of the peripheral wall portion 21 and on the inner surface 21A side of the peripheral wall portion 21. An example of this adhesive placement portion 179 is a double-sided adhesive tape.

[0282] [15 Fifteenth Embodiment] [15-1 Configuration] As shown in the examples of Figures 74A, 74B, 74C, and 74D, a bag according to the fifteenth embodiment is a bag according to any one of the first to fourteenth embodiments, in at least the second shape state ST2, in which the position restricting member 30 has a folded structure 590 on the restricting wall 31. Figures 74A, 74B, 74C, and 74D are views for explaining an example of the fifteenth embodiment. The configuration other than the folded structure 590 may be the same as that of any one of the bags according to the first to fourteenth embodiments. Therefore, a description of the configuration other than the folded structure 590 of the position restricting member 30 will be omitted.

[0283] (Folded Structure Portion) In the position restricting member 30, a folded structure portion 590 is formed on the restricting wall portion 31 in the second shape state ST2. The position and shape of the folded structure portion 590 are not particularly limited. In the example of FIG. 74 , the folded structure portion 590 is formed in the portion facing the wall surface portion 25 in the second shape state ST2. However, this does not prohibit the folded structure portion from being formed in the portion facing the side wall surface portion 26. The folded structure portion 590 is not prohibited from being formed in each of the portion facing the wall surface portion 25 and the portion facing the side wall surface portion 26. Furthermore, the folded structure portion 590 is not prohibited from being formed in the portion extending from the portion facing the side wall surface portion 26 to the portion facing the wall surface portion 25.

[0284] The position restricting member 30 is configured such that, when the second shape state ST2 is changed to the first shape state ST1 as shown in FIGS. 74A and 74D , the folding structure 590 can change shape from a folded state to an open state. The folded state refers to a state in which the folding structure 590 is folded, as shown in FIG. 74A and other figures. The folded structure of the folding structure 590 is a structure in which at least a portion of the surface of the folding structure 590 facing the small space 33 faces the position restricting member 30. The open state refers to a state in which the folding structure 590 is displaced from the folded state toward the inside of the space 23 (a "released from the folded state"), as shown in FIG. 74D and other figures. In FIG. 74A , the shape transformation between the folded state and the open state can be achieved by displacing the restricting wall 31 in the direction of arrow T.

[0285] 74C, the folded structure 590 has a fold line 591 extending in the vertical direction, but this is just an example. For example, the folded structure 590 may have a fold line extending in a diagonal direction.

[0286] The number of folded structures 590 formed per position restricting member 30 may be one, as shown in the example of FIG. 75A , or two or more. The example of FIG. 75B depicts a position restricting member 30 having three folded structures 590 formed on the restricting wall portion 31 (one of the four position restricting members 30 depicted in FIG. 75 has three folded structures 590 formed thereon). FIGS. 75A and 75B are plan views illustrating examples of the formation of the folded structures 590. For ease of explanation, FIGS. 75A and 75B omit the thicknesses of the main body 20 and the position restricting member 30, and also omit detailed structure details of the main body 20 (e.g., the structure of the bottom portion 22). This also applies to FIGS. 76 and 77 .

[0287] In the example of Figure 74A, the shape of the folded structure portion 590 in the position control member 30 is a Z-folded shape in cross section, but this is just one example, and the shape of the folded structure portion 590 may be a shape other than a Z-folded shape, such as a bellows-like folded shape.

[0288] When a plurality of folded structures 590 are formed per position restricting member 30, the folded structures 590 may have the same shape or different structures. In the example of Fig. 74A, two folded structures 590 are formed, and the shapes of the respective folded structures 590 are formed in Z shapes facing in opposite directions when viewed from above the bag body 10 (when the line of sight is in the up-down direction).

[0289] In the example of Fig. 74A , the position restricting member 30 on which the folded structure 590 is formed is the position restricting member 30 arranged at the corner 28. This is just one example, and as shown in Fig. 73 , the position restricting member 30 on which the folded structure 590 is formed may be the position restricting member 30 arranged at "a position on the inner surface of the peripheral wall 21 excluding the corner 28," as shown in the examples of Figs. 76A and 76B . Fig. 76A shows an example in which a plurality of folded structures 590 are formed on the position restricting member 30, and Fig. 76B shows an example in which a single folded structure 590 is formed on the position restricting member 30.

[0290] In the example shown in FIG. 74A , the position restricting member 30 is a sheet material formed in a strip shape, but the shape of the sheet material forming the position restricting member 30 is not limited to this. The sheet material forming the position restricting member 30 may also be a sheet material formed in a fan shape, as shown in FIGS. 77A to 77C . Even in this case, forming the folded structure 590 makes it easy to set the position restricting member 30 in the second shape state. Furthermore, when the position restricting member 30 is formed in a sheet material, when the position restricting member 30 is set in the second shape state, the restricting wall portion 31 can be curved and inclined obliquely upward, making it easy to ensure that the restricting wall portion 31 of the position restricting member 30 is well-matched to the shape of a container such as a coffee cup. FIG. 77A is a plan view illustrating an example of the position restricting member 30. FIG. 77B is a plan view illustrating a bag 10 provided with the position restricting member 30 shown in FIG. 77A . FIG. 77C is a cross-sectional view showing the state of the cross section taken along line H2-H2 of FIG. 77B .

[0291] [15-2 Actions and Effects] In conventional bags, there is a demand for the small space portion to be able to accommodate large contents such as containers, etc. In this case, it is required to use a large-sized position restricting member, but since the area on the inner surface of the peripheral wall portion where the position restricting member can be installed is limited, there is a restriction on the size of the position restricting member installed on the inner surface of the peripheral wall portion.

[0292] In the bag body according to the fifteenth embodiment, the folded structure 590 of the position restricting member 30 is gradually released as the position restricting member 30 transitions from the second shape state ST2 to the first shape state ST1, thereby enabling the small space 33 to be expanded compared to the case where the folded structure 590 is omitted. Therefore, it is possible to expand the small space 33 without expanding the area on the inner surface of the peripheral wall 21 that is used to install the position restricting member 30.

[0293] 16 Sixteenth Embodiment In the bag body 10 according to the first to fifteenth embodiments, as shown in FIGS. 78A and 78B , the peripheral wall portion 21 may have a pair of opposing wall portions 25, that is, a first wall portion 25A and a second wall portion 25B, and at least one of the position restricting members 30 may be fixed to the wall portions 25. Such an embodiment of the bag body 10 is referred to as the sixteenth embodiment. FIGS. 78A and 78B are views for explaining an example of the bag body 10 according to the sixteenth embodiment. In the bag body 10 according to the sixteenth embodiment, as shown in FIG. 17A , a portion of the position restricting member 30 is joined to one wall portion 25 (first wall portion 25A), and another portion of the position restricting member 30 is joined to the other wall portion 25 (second wall portion 25B).

[0294] In the examples shown in Figures 78A and 78B, one position restricting member 30 is provided. However, as shown in Figure 78C, multiple position restricting members 30 may be provided at different positions in the vertical direction. Furthermore, when multiple position restricting members 30 are provided at different positions in the vertical direction, the position restricting members 30 may contact each other or may be spaced apart as shown in Figure 78C. Furthermore, the multiple position restricting members 30 may have the same shape or different shapes. Furthermore, the multiple position restricting members 30 may be provided at positions offset from each other in directions other than the vertical direction. In this case, the multiple position restricting members 30 can form a small space 33 for accommodating a container 200 or the like. Even if the container 200 has a special shape in part, the multiple position restricting members 30 can be arranged so that the specially shaped portion is not facing the multiple position restricting members 30, thereby enabling a configuration in which the multiple position restricting members 30 can restrict movement of the container 200. Note that this arrangement of multiple position restricting members 30 may be applied to any of the first to sixteenth embodiments.

[0295] 79B , when a plurality of position restricting members 30 are provided, at least one position restricting member 30 may be joined to the restricting wall portion 31 of at least one other position restricting member 30. In this case, the configuration can be such that displacement of one position restricting member 30 induces displacement of the other position restricting members 30, and simply by changing the state of one position restricting member 30, the states of the other position restricting members 30 can also be changed.

[0296] In the example of FIG. 78A , the position restricting member 30 is bent into a generally V-shape when viewed from above (with the Z-axis direction as the line of sight) of the bag body 10. One end of the position restricting member 30 is joined to one wall surface 25 (first wall surface 25A) and the other end of the position restricting member 30 is joined to the other wall surface 25 (second wall surface 25B). However, the shape of the position restricting member 30 when viewed from above is not limited thereto. For example, the position restricting member 30 may be W-shaped (not shown) or annular ( FIG. 79A ). The shape of the position restricting member 30 includes any shape that allows one end edge of the position restricting member 30 (joint margin 32) to be joined to one wall surface 25 and the other end edge of the position restricting member 30 (joint margin 32) to be joined to the other wall surface 25. This can be applied to any of the bag bodies 10 according to the first to sixteenth embodiments. That is, even in a case where the peripheral wall portion 21 of the bag body 10 has a side wall surface portion 26 and the position restricting member 30 is joined to the wall surface portion 25 and the side wall surface portion 26, the shape of the position restricting member 30 may be W-shaped, annular, or the like in a plan view of the bag body 10. The shape of the position restricting member 30 includes any shape that allows a portion of the position restricting member 30 to be joined to the wall surface portion 25 (first wall surface portion 25A) and the other edge of the position restricting member 30 to be joined to the other wall surface portion (second wall surface portion 25B).

[0297] In the bag 10 according to the sixteenth embodiment, the peripheral wall 21 of the main body shown in Figs. 78A and 79B has a pair of opposing wall portions 25 and a pair of opposing side wall portions 26, each of which is connected to the side edge of the wall portion 25, and the bottom 22 forms a planar portion. However, this is merely an example, and in the bag 10 according to the sixteenth embodiment, as shown in Figs. 80A and 80B, the peripheral wall 21 of the main body 20 may have a pair of opposing wall portions 25, with the side edges of the wall portions 25 joined to each other (a structure in which the side wall portions 26 are omitted). In the example of Fig. 80B, the bottom 22 is configured with a folded portion, as shown in Figs. 80B and 82A. Furthermore, such a bag 10 can store a container 200 or the like, as shown in Fig. 80C. Furthermore, the structure of the bottom portion 22 is not limited to the examples shown in Figures 80B and 82A. In cases where the peripheral wall portion 21 of the bag body 10 has a structure in which the lower ends of the wall portions 25 (the lower end of the first wall portion 25A and the lower end of the second wall portion 25B) are joined to each other, the bottom portion 22 may be formed by a portion in which the wall portions 25 are joined to each other at their lower ends (not shown). Furthermore, as shown in the example of Figure 82B, the bottom portion 22 may have a structure with a gusset portion (a gusset structure (e.g., a W-shaped structure)). Figures 80B and 82A are cross-sectional views illustrating one example of the bottom portion 22.

[0298] In the bag body 10 according to the sixteenth embodiment, the peripheral wall portion 21 of the main body 20 shown in the examples of Figures 80A and 80B has a pair of opposing wall portions 25, and the side edges of the wall portions 25 are joined to each other. In this case, the bag body 10 can be manufactured, for example, as follows. As shown in Figure 81 , a blank 600 for forming the bag body 10 is prepared. A position restricting member 30 is adhered to a predetermined position on the blank 600. Then, the blank 600 with the position restricting member 30 placed thereon is folded back at the predetermined position. In the example of Figure 81 , the position indicated by the dashed line is set as the folding position PLB, and the blank 600 is folded back. At this time, opposing portions 601 and 602 of the blank 600 form a pair of wall portions. The portions 601 and 602 are portions of the blank 600 that are partitioned by the position PLB. The position restricting member 30 is sandwiched between the portions that form the wall portions 25. Furthermore, the position restricting member 30 is adhered to one portion 601 of the blank 600 that forms the wall surface 25, and is not adhered to the other portion 602 that forms the wall surface 25. In the folded blank 600, the side edge portions 603 of the blank 600 that face each other are adhered to each other (the side edge portion 603 of portion 601 is adhered to the side edge portion 603 of portion 602). The position restricting member 30 is adhered to the portion 602 that forms the wall surface 25. An example of such an adhesion method is a method in which adhesive is applied to the side edge portion 603, and then the side edge portion 603 of portion 601 is adhered to the side edge portion 603 of portion 602. In this manner, the bag 10 can be specifically manufactured.

[0299] [17 Seventeenth Embodiment] In the bag body 10 according to the first to sixteenth embodiments, as shown in Figures 83A, 83B, etc., an insole material 270 may be provided on the upper surface 22A side of the bottom portion 22. Such an embodiment of the bag body 10 is referred to as the seventeenth embodiment. Figure 83A is a front view for explaining one example of the bag body 10 according to the seventeenth embodiment. Figure 83B is a partial cross-sectional view for explaining one example of the bag body 10 according to the seventeenth embodiment.

[0300] [17-1] Configuration (Insole Material) In the bag body 10 according to the seventeenth embodiment, the insole material 270 has greater stiffness than the components constituting the main body 20. Examples of the insole material 270 include cardboard and other paper-based sheets, resin sheets, wooden sheets, and metal sheets. To prevent damage to the bottom 22, the insole material 270 preferably has cushioning properties. Furthermore, to more easily offset the effects of downward pressure from items such as containers placed on the insole material 270, it is preferable that the insole material 270 have a folded structure, forming a multilayer structure connected by a folded portion 271, as shown in FIG. 84B . In this case, gaps are more likely to form between the layers constituting the multilayer structure of the insole material 270, and the folded portion can provide spring-like cushioning.

[0301] As shown in FIG. 84A , the insole 270 may have a laminated structure of a waterproof sheet 270A and a water-absorbent sheet 270B. In the example shown in FIG. 84A , the insole 270 is laid on the upper surface 22A of the bottom 22 so that the water-absorbent sheet 270B is located above the waterproof sheet 270A. This configuration of the insole 270 prevents water from dripping from a container 201 or the like stored in the bag 10 toward the bottom 22 by absorbing the water with the water-absorbent sheet 270B, preventing the water from spreading along the surface of the insole 270. Furthermore, the water that passes through the water-absorbent sheet 270B is captured by the waterproof sheet 270A, preventing the water from reaching the bottom 22. However, this does not exclude the insole 270 being laid so that the water-absorbent sheet 270B is located below the waterproof sheet 270A. The insole material 270 may cover the entire upper surface 22A side of the bottom 22, or may cover a partial area of ​​the upper surface 22A side of the bottom 22. The insole material 270 may be joined (adhered) to the main body 20, or may be configured to be detachable from the main body 20.

[0302] Items of various weights may be stored in the bag 10. For example, when a container containing a relatively heavy beverage is stored in the bag 10, the weight of the container may push the bottom 22 downward, causing the bottom 22 to deform and resulting in the overall shape of the bag 10 being crushed. The bag 10 according to the seventeenth embodiment makes it possible to suppress deformation of the bottom 22. Furthermore, the bag 10 according to the seventeenth embodiment makes it possible to suppress a decrease in the strength of the bottom 22 due to the adhesion of liquid or the like (e.g., moisture) to the bottom 22.

[0303] [17-2 Modification] In the bag body 10 according to the seventeenth embodiment, as shown in FIGS. 111A and 111B , the insole material 270 may cover a predetermined region on the lower end side of the bottom portion 22 and the peripheral wall portion 21. This configuration is referred to as a modification of the seventeenth embodiment. The insole material 270 may be formed of a resin sheet 340. In this modification of the seventeenth embodiment, the adhesive region between the resin sheet 340 and the bottom portion 22 may be the entire region where the resin sheet 340 and the bottom portion 22 face each other, or may be a partial region in a part of the region where the resin sheet 340 and the bottom portion 22 face each other. From the viewpoint of being able to suppress the progression of the rupture even if the bottom portion 22 of the main body 20 is ruptured, it is preferable that the adhesive region be a partial region in a part of the region where the resin sheet 340 and the bottom portion 22 face each other.

[0304] [17-3 Reference Example] In the bag body of the 17th embodiment, the above-mentioned insole material 270 may be provided in a bag body in which the position regulating member 30 is omitted from each of the bags of the first to sixteenth embodiments (i.e., a bag body consisting only of the main body as shown in FIG. 31) (reference example).

[0305] [18 Eighteenth Embodiment] [18-1 Configuration] In the bag 10 according to the first to seventeenth embodiments, as shown in Figures 85A and 85B, the peripheral wall 21 of the main body 20 may have a peripheral gusset portion 275 that is folded at a predetermined position when closing the opening 24 of the main body 20, and may be provided with a deformation restriction structure that can restrict deformation of the peripheral gusset portion 275 when the peripheral gusset portion 275 is folded. In this case, the deformation restriction structure is configured to allow the peripheral gusset portion 275 to generally maintain its shape while forming a folded shape. In the example of Figures 85A and 85B, the bag 10 according to the first to seventeenth embodiments may be provided with a deformation restriction structure that can restrict deformation of the main body gusset portion 29 when the main body gusset portion 29 is folded at a predetermined position of the side wall surface portion 26 (when the main body gusset portion 29 is in a contracted state).

[0306] As the deformation restriction structure, a gusset joint 276 is preferably employed, which connects the peripheral wall gusset 275 and the joining target portion 277 when joined to the peripheral wall gusset 275. An embodiment in which the bag body 10 is provided with the gusset joint 276 as the deformation restriction structure is referred to as the eighteenth embodiment. The joining target portion 277 is defined as a predetermined portion of the peripheral wall 21. The joining target portion 277 is preferably a predetermined portion of the peripheral wall 21 excluding the peripheral wall gusset 275. A structure in...

Claims

1. A bag body having a bottom and a peripheral wall connected to the bottom at the periphery of the bottom, and having a space surrounded by the bottom and the peripheral wall and capable of storing contents, and an opening for inserting the contents into the space, wherein the body is provided with a position restricting member having a restricting wall that restricts movement of the contents within the space, and the position restricting member is joined to at least the inner surface of the peripheral wall, and wherein when the contents are placed in the space so that the movement is restricted by the restricting wall, and the surface of the restricting wall that faces the contents is designated as a facing surface, the restricting wall is configured to be able to assume a first shape state in which the facing surface forms a concave surface, and a second shape state different from the first shape state.

2. The bag body according to claim 1, wherein the inner surface of the peripheral wall portion has at least one corner portion extending from the bottom portion toward the opening, and when the restricting wall portion is in the second shape state, the position restricting member covers at least a portion of at least one of the corner portions.

3. A bag as set forth in claim 2, wherein the peripheral wall portion has a pair of opposing wall surface portions and a pair of opposing side wall surface portions, each of the wall surface portions being connected to the side wall surface portions at its side edge, and the corner portions being formed at the boundary positions between the wall surface portions and the side wall surface portions.

4. The bag body according to claim 3, wherein the position regulating member is joined to the wall surface portion and the side wall surface portion.

5. A bag body as described in claim 3, wherein when the set of wall portions is a first wall portion and a second wall portion, the set of side wall portions is formed with a main body gusset portion that changes the distance between the first wall portion and the second wall portion.

6. The bag according to claim 1, wherein the position regulating member further comprises an inner bottom portion that supports the contents inside the space.

7. The bag according to claim 6, wherein the inner bottom has a gusset.

8. The bag body according to claim 1, wherein the second shape state is a state in which the restricting wall portion forms a convex surface on the facing surface so as to fit along the inner surface of the peripheral wall portion.

9. A bag as claimed in claim 1, wherein the position restricting member has an intervening wall that is in face contact with the inner surface of the peripheral wall and is positioned between the peripheral wall and the restricting wall, and the intervening wall is joined to at least the inner surface of the peripheral wall.

10. A bag body as set forth in claim 9, wherein, when the restricting wall portion is in the second shape state, the lower end of the restricting wall portion is positioned above the lower end of the intervening wall.

11. The bag body according to claim 10, wherein a clearance space is formed between the intermediate wall and the peripheral wall.

12. The bag body according to claim 1, wherein a folded portion is formed at the upper end of the restricting wall portion.

13. The bag body according to claim 1, wherein a reinforcing material is provided at the upper end of the restricting wall portion.

14. The bag body according to claim 1, wherein the upper end of the regulating wall portion is provided with a reinforcing material, and the upper end of the regulating wall portion has a folded portion, which is formed to cover the reinforcing material.

15. A bag as described in claim 1, wherein the peripheral wall portion has a pair of opposing wall surface portions, and when the pair of wall surface portions is a first wall surface portion and a second wall surface portion, a lid portion is formed at the upper end of the first wall surface portion so as to be able to cover the upper end of the second wall surface portion, and the lid portion is provided with an adhesive placement portion on which adhesive is placed that can be adhered to the second wall surface portion with the lid portion covering the upper end of the second wall surface portion.

16. The bag according to claim 15, wherein a grip portion is provided at a predetermined position on the first wall portion.

17. The bag body according to claim 16, wherein the gripping portion stands up when the lid portion covers the upper end of the second wall portion.

18. A bag body as described in claim 15, wherein the first wall portion is provided with a weakened portion at a position that avoids the lid portion, or at a portion of the lid portion that avoids the adhesive placement portion.

19. The bag according to claim 1, wherein the position regulating member is waterproof.

20. The bag according to claim 1, wherein the main body is formed from a paper-based material.

21. The bag according to claim 1, wherein a waterproof layer is provided on the upper surface of the bottom portion.

22. The bag body according to claim 1, wherein the contents are a container, and when the contents are placed in the space, a gap exists between at least a part of the upper end of the restricting wall portion and the outer peripheral surface of the container.

23. The bag of claim 1, wherein the second shape state is a state in which the facing surface forms a convex surface.

24. The bag according to claim 6, wherein the inner bottom and the restricting wall are continuously connected.

25. A bag body as described in claim 6, wherein, when the regulating wall portion of the position regulating member is in the first shape state, at least a portion of the inner bottom portion has an inclined surface that slopes downward from the boundary position between the inner bottom portion and the regulating wall portion in a direction approaching the peripheral wall portion.

26. The bag according to claim 15, wherein a release paper is provided to cover the adhesive placement portion.

27. The bag according to claim 26, wherein the release paper has a display portion provided on the exposed surface of the release paper.

28. A container having a body including a bottom and a peripheral wall connected to the bottom at the periphery thereof, the body forming a space surrounded by the bottom and the peripheral wall and capable of accommodating contents, and an opening for inserting the contents into the space, the peripheral wall having a first wall and a second wall as a pair of opposing wall portions, an adhesive member having a first adhesive surface forming portion and a second adhesive surface forming portion attached to the outer surface of the peripheral wall, the first adhesive surface forming portion attached to a predetermined region of the outer surface of the first wall, and when a predetermined portion of the upper end of the first wall and a predetermined portion of the upper end of the second wall are overlapped to form a bent structure defined by the bent portion of the first wall and the second wall so that the outer surface of the first wall and the outer surface of the second wall face each other, at least a part of the second adhesive surface forming portion can be adhered to the outer surface of the second wall, When the bent structure is not formed, the second adhesive surface forming portion is prevented from being adhered to the outer surface of the peripheral wall portion.

29. A bag body as described in claim 28, which is configured so that when the second adhesive surface forming portion is adhered to the peripheral wall portion, a graspable gap can be formed between a first peripheral wall portion forming portion of the peripheral wall portion that forms the bent structure and a second peripheral wall portion forming portion excluding the first peripheral wall portion forming portion.

30. A bag body as described in claim 28, wherein the second adhesive surface forming portion is configured to be adhesive to the first wall portion and the second wall portion when the bent structure is formed.

31. A bag body as described in claim 28, wherein the bent structure is determined by a portion where the first wall portion and the second wall portion are bent toward the second wall portion so that the outer surfaces of the first wall portion and the second wall portion face each other.

32. A bag body as described in claim 28, wherein the bent structure is determined by a portion where the first wall portion and the second wall portion are bent toward the first wall portion so that the outer surfaces of the first wall portion and the second wall portion face each other.

33. The bag of claim 28, wherein the opening is concealed in the bent configuration.

34. The bag according to claim 28, wherein a peelable member having peelability is attached so as to cover the second adhesive surface forming portion.

35. The pouch of claim 34, wherein the peel member is configured to avoid complete separation from the adhesive member.

36. A container having a body including a bottom and a peripheral wall connected to the bottom at the periphery of the bottom, and forming a space surrounded by the bottom and the peripheral wall and capable of storing contents, and an opening for inserting the contents into the space, wherein the peripheral wall has a first wall and a second wall as a pair of opposing wall surfaces, and a seal sheet having a detachable seal member having an adhesive surface forming portion is affixed to the outer surface of the peripheral wall, wherein when a predetermined portion on the upper end side of the first wall and a predetermined portion on the upper end side of the second wall are overlapped to form a bent structure defined by the bent portion of the first wall and the second wall so that the outer surface of the first wall and the outer surface of the second wall face each other, the seal member is arranged to straddle the lower end of the bent structure, and is configured to be able to adhere to the peripheral wall with the adhesive surface forming portion facing the first wall and the second wall, The bag body is configured such that, when the sealing member is adhered to the peripheral wall portion, a grippable gap can be formed between a first peripheral wall portion forming portion of the peripheral wall portion that forms the bent structure and a second peripheral wall portion forming portion excluding the first peripheral wall portion forming portion.

37. A bag body as described in claim 36, wherein the sealing member has a through hole, and the through hole is configured so that the gap can be exposed from the through hole when the sealing member is adhered to the peripheral wall portion.

38. A container having a main body with a bottom and a peripheral wall connected to the bottom at the periphery of the bottom, and forming a space surrounded by the bottom and the peripheral wall and capable of storing contents, and an opening for inserting the contents into the space, wherein the peripheral wall has a first wall and a second wall as a pair of opposing wall surfaces, and the peripheral wall has a small piece having an adhesive-attached surface on which an adhesive material is arranged, the small piece having a fixed end fixed to the peripheral wall and a free end displaceable relative to the peripheral wall, and the free end of the small piece can be rotated around at least the fixed end as an axis, and a removable part having a small piece opposing surface at a position opposite the adhesive-attached surface and capable of being removably attached to the small piece at the small piece opposing surface, and the removable part is provided at a position that avoids exposure to the outside of the main body, A bag body configured such that, when at least a portion of the small piece portion is peeled off from the peelable portion and bent, the small piece portion can be adhered to the peripheral wall portion in the area of ​​the adhesive-adhering surface so as to prevent movement that separates the first wall portion and the second wall portion.

39. A bag as claimed in claim 38, wherein an adhesive element formed separately from the peripheral wall is adhered to the peripheral wall, and a part of the adhesive element forms the small piece.

40. A bag as set forth in claim 38, wherein the peelable portion is formed separately from the peripheral wall portion and is made of release paper.

41. A bag as claimed in claim 40, wherein an adhesive piece formed separately from the peripheral wall is adhered to the peripheral wall, a part of the adhesive piece forms the small piece, and the release paper has a surface opposite to the surface facing the small piece adhered to the adhesive piece.

42. A bag as described in claim 40, wherein an adhesive piece formed separately from the peripheral wall portion is adhered to the peripheral wall portion, a part of the adhesive piece forms the small piece portion, the adhesive piece is adhered to the outer surface side of the peripheral wall portion, and the release paper is adhered to the inner surface side of the peripheral wall portion.

43. A bag as set forth in claim 38, wherein the small piece portions and the peelable portions are each provided at a plurality of locations, and the peelable portions are each provided at a position corresponding to each of the small piece portions.

44. A bag as set forth in claim 38, wherein a tab configured to be grippable is provided extending from the free end of the small piece.

45. The main body has at least one corner on the inner surface of the peripheral wall extending from the bottom toward the opening, the main body being composed of a folded structure formed by folding a blank made of a paper-based material, and the position control member being joined to the inner surface of the folded structure, the blank having an upper edge portion forming the opening and a lower edge portion formed on the opposite end side of the upper edge portion of the blank, a first blank side end portion and a second blank side end portion located on opposite ends of each other and connected to the upper edge portion and the lower edge portion of the blank, and having a first overlapping structure corresponding portion determined by a predetermined portion of the first blank side end portion and a second overlapping structure corresponding portion determined by a predetermined portion of the second blank side end portion as overlapping structure corresponding portions for joining a predetermined portion inward from the first blank side end portion and a predetermined portion inward from the second blank side end portion to each other, 2. The bag body according to claim 1, wherein the folding structure has side edge adhesive portions that adhesively bond the first overlapping structure corresponding portion and the second overlapping structure corresponding portion to each other, and the first overlapping structure corresponding portion and the second overlapping structure corresponding portion are positioned in order from the inner surface side of the folding structure, and wherein, in the blank material, an area that is intended to face the position regulating member is defined as an intended facing area, and a position where the blank material can be folded at a portion corresponding to the corner is defined as a corner-corresponding bending position, and when an area of ​​the first overlapping structure corresponding portion that faces the inside of the folding structure is defined as a first inward-facing area, and an area of ​​the second overlapping structure corresponding portion that faces the inside of the folding structure is defined as a second inward-facing area, at least one of the intended facing areas is defined as an area that avoids the second inward-facing area and crosses the corner-corresponding bending position, and one of two side edges of the intended facing area is defined as being located in the first inward-facing area.

46. ​​A bag body as described in claim 45, wherein, in the blank material, when the portion of the first overlap structure corresponding portion that corresponds to the side end adhesive portion is defined as adhesive portion corresponding portion (A) and the portion that corresponds to the portion that joins the position control member and the folding structure is defined as adhesive portion corresponding portion (B), at least a portion of adhesive portion corresponding portion (A) also serves as at least a portion of adhesive portion corresponding portion (B).

47. A bag body as described in claim 45, wherein a handle structure is bonded to the folding structure of the main body, and when an area of ​​the blank material corresponding to an area bonded to the handle structure is defined as a handle bonding area, the handle bonding area is defined as an area that does not cross the edge of the side end of the blank material in the folded structure state.

48. The peripheral wall portion has a pair of opposing wall surface portions and a pair of opposing side wall surface portions, and each of the wall surface portions is connected to the side wall surface portion at the side edge of the wall surface portion; the main body is composed of a folded structure formed by folding a blank material made of a paper-based material, and the position control member is joined to the inner side of the folded structure; the blank material has an upper edge portion of the blank material that forms the opening and a lower edge portion of the blank material that is formed on the opposite end side of the upper edge portion of the blank material; 2. The bag according to claim 1, wherein the folding structure includes a set of first inwardly folded portions formed by folding a set of first lower portions defined by portions of the blank that extend from lower ends of the respective side wall portions to a lower edge of the blank toward the inside of the folding structure, and a set of second inwardly folded portions formed by folding a set of second lower portions defined by portions of the blank that extend from the lower ends of the respective wall portions to the lower edge of the blank toward the inside of the folding structure on lower sides of the first lower portions, and wherein the set of second inwardly folded portions has an overlapping structure defined by portions where the set of second inwardly folded portions overlap each other, and at least one of the set of second inwardly folded portions has a bottom fold formed by folding back the lower edge of the blank, and at least a portion of the bottom fold is disposed in the overlapping structure.

49. A bag as described in claim 48, wherein the second inward fold has a diagonal fold formed by folding the blank back around a straight line extending diagonally relative to the lower end edge of the lower edge of the blank, the first inward fold is connected to the diagonal fold of the second inward fold, and the width of the second inward fold decreases toward the lower end of the lower edge of the blank.

50. The bag body according to claim 1, wherein the position restricting member has a folded structure on the restricting wall portion at least in the second shape state.

51. The bag body according to claim 1, wherein the peripheral wall portion has a pair of opposing wall portions, namely a first wall portion and a second wall portion, and at least one position regulating member is joined to the first wall portion and the second wall portion.

52. The bag according to claim 1, wherein an insole is provided on the upper surface side of the bottom portion.

53. The bag according to claim 52, wherein the insole material is a resin sheet.

54. A bag as set forth in claim 53, wherein the insole material covers a predetermined area on the lower end side of the bottom portion and the peripheral wall portion.

55. A bag as described in claim 1, wherein the peripheral wall portion has a pair of opposing wall surface portions and a pair of opposing side wall surface portions, and when the pair of wall surface portions is a first wall surface portion and a second wall surface portion, the pair of side wall surface portions is formed with a main body gusset portion that changes the distance between the first wall surface portion and the second wall surface portion, and a deformation restriction structure is provided that can restrict deformation of the main body gusset portion when the main body gusset portion is folded at a predetermined position on the side wall portion.

56. A bag body as described in claim 1, wherein the main body is provided with a handle portion, the handle portion having a handle sheet portion and a through-hole that penetrates the handle sheet portion, and a reinforcing portion is provided on the surface of the handle sheet portion so as to face a predetermined area at least above the through-hole.

57. The bag body according to claim 56, wherein the reinforcing portion has a structure in which a reinforcing material is bonded to the surface of the handle sheet portion, and the reinforcing material is a resin sheet.

58. The bag of claim 56, wherein the reinforcing material is partially bonded to the handle sheet portion.

59. The bag body according to claim 56, wherein the reinforcing portion has a structure in which a reinforcing material is bonded to the surface of the handle sheet portion, and the reinforcing material is a nonwoven fabric.

60. A bag as set forth in claim 59, wherein the reinforcing material is partially bonded to the handle sheet portion, and the nonwoven fabric contains long fibers.

61. A bag as described in claim 56, wherein the reinforcing portion has a folded structure on the upper end side of the handle sheet portion, and a reinforcing film is interposed between the opposing portions of the handle sheet portion that form the folded structure.

62. The bag according to claim 56, wherein the handle sheet portion is integrally formed with the main body.

63. A bag as described in claim 56, wherein the handle sheet portion is formed separately from the main body, and the handle sheet portion and the main body are joined at a portion inside the side edge of the handle sheet portion.

64. A bag as described in claim 56, wherein the peripheral wall portion has a pair of opposing wall surface portions, the handle sheet portion is provided on each of the pair of wall surface portions, and the width of the handle sheet portion is smaller than the width of the side wall portion.

65. A bag as described in claim 56, wherein the peripheral wall portion has a pair of opposing wall surface portions, the handle sheet portion is provided on each of the pair of wall surface portions, and an adhesive is disposed on the handle sheet portion provided on at least one of the side wall portions.

66. A bag body as described in claim 1, wherein a handle portion is provided on the main body, the handle portion having a handle support sheet portion, a cutout portion cut out from the upper edge of the handle support sheet portion to a predetermined position, a handle material arranged to cross at least two points on the outline of the cutout portion, and a covering material covering a part of the handle material, the handle material being sandwiched between the handle support sheet portion and the covering material and adhering the handle material, and the adhesive auxiliary sheet being provided between the handle support sheet portion and the covering material.

67. A bag body as described in claim 1, wherein the peripheral wall portion has a pair of opposing wall surface portions and a pair of opposing side wall surface portions, each of the wall surface portions being connected to the side wall surface portion at its side edge; the main body is made of a folded structure formed by folding a blank material made of a paper-based material, and the position regulating member is joined to the inner side of the folded structure; and the position regulating member is made of a continuous strip extending from one side edge of the blank material to the other side edge, and is joined to the blank material at a predetermined position.

68. A bag body as described in claim 67, wherein the regulating member joint that joins the position regulating member and the blank is composed of a plurality of unit joints that are independent of each other and provided at different positions, and at least one of the regulating wall portions is formed by a portion sandwiched between at least one pair of unit joints among adjacent unit joints, and the length of the upper edge of the regulating wall portion is longer than the length of the lower edge of the regulating wall portion.

69. The bag according to claim 1, wherein the position regulating member has water-absorbent properties.

70. The bag body according to claim 1, wherein the position restricting member has a number of restricting wall penetrations.

71. The bag body according to claim 1, wherein the position regulating member is composed of a fiber bundle in which a large number of long fibers are arranged.

72. A bag body according to claim 1, wherein the area of ​​the opposing surface of the restricting wall portion is larger than the area of ​​the surface region of the peripheral wall portion that corresponds to the opposing surface.

73. The bag body according to claim 1, wherein in the second shape state, an overlapping portion is formed in the restricting wall portion.

74. The main body is configured so that the three-dimensional structure of the main body can be transformed from a first structure to a second structure, and when the main body is in the first structure, the main body has a set of folded wall surfaces folded from the top to the bottom to form a gusset portion, and opposing wall surfaces facing each other across the folded wall surfaces, and each of the opposing wall surfaces is connected to the folded wall surfaces at its two side edges, and has a lower edge joint that joins the lower edge of the opposing wall surface and the lower edge of the folded wall surface facing the first lower edge; when the main body is in the second structure, the main body has the peripheral wall surface and the bottom, and the peripheral wall surface has a set of opposing wall surfaces and a set of opposing side wall surfaces, and the side wall surfaces have a main body gusset portion, 2. The bag body according to claim 1, wherein two side edges of each of the wall portions are connected to the side wall portions, and corners are provided at boundaries between the wall portions and the side wall portions, and the three-dimensional structure of the main body is configured to be transformed from the first structure to the second structure when the main body is folded so as to satisfy the following first to fourth conditions: Condition 1: The gusset portion of the first structure is expanded. Condition 2: A predetermined reference position from the lower end side of each of the folded wall portions toward the upper side is used as a first folding axis, and the folded wall portion is folded inward from the reference position to form the side wall portion. Condition 3: In the portion of the folded wall portion below the reference position, a diagonal straight line from the outer end of the folded wall portion toward the inner end of the lower edge joint is used as a second folding axis, and the folded wall portion is folded inward. Condition 4: A straight line connecting two positions that are connected to the reference position on each of the two side edges of the opposing wall portion is used as a third folding axis, and the opposing wall portion is folded to form the wall portion.

75. A bag as set forth in claim 74, wherein a film material is bonded to at least the lower edge of the opposing wall portion.

76. The bag body according to claim 74, wherein a crease is provided at a position corresponding to at least one of the first to third folding axes.

77. The bag of claim 1, having a hanger receiving structure.

78. A bag as claimed in claim 1, having a plurality of closing sections facing each other on the upper side of the peripheral wall, at least one of the closing sections having an adhesive surface with an adhesive, and configured so that the closing sections cover the opening when the adhesive surface of one of the closing sections is adhered to the adhesive-facing surface of another closing section that faces the adhesive surface of the other closing section.

79. A bag as described in claim 78, wherein at least one of the closure sections has an extension formed integrally with the main body, and a predetermined area of ​​the extension section has an adhesive surface having adhesive thereon and an adhesive-facing surface opposite the adhesive surface.

80. A bag as set forth in claim 78, wherein at least one of said closures comprises a closure-forming member formed separately from and adhered to said peripheral wall.

81. A bag as set forth in claim 80, further comprising a handle, and wherein the closure-forming member is adhered to the main body on an inner side of the main body than the handle.

82. A bag as described in claim 78, which has a handle, the handle having a handle member and a handle fixing sheet for fixing the handle member, the handle fixing sheet being adhered to the inner surface side of the peripheral wall portion so as to cover at least a part of the handle member, and at least a part of the handle also serving as the closing portion.

83. A bag as claimed in claim 78, in which at least one closure section is provided with a weakened section above the upper side of the peripheral wall section and below the adhesive surface.

84. The bag of claim 78, wherein the lower edge of the adhesive surface and the weakened portion are spaced apart.

85. A bag as claimed in claim 78, wherein the closure has a notch at the end of the weakened portion.

86. A bag as described in claim 78, wherein each of the plurality of closing sections is provided with a weakened section, and when the plurality of closing sections are arranged so that the adhesive surface of the closing section and the opposing surface are parallel, the weakened sections of the plurality of closing sections are aligned in the vertical direction.

87. A bag as claimed in claim 78, wherein each of the plurality of closure sections is provided with a weakened section, and when the plurality of closure sections are arranged so that the adhesive surface of one closure section is parallel to the facing surface, the lower end of the adhesive surface of one closure section is located above the weakened section formed on the other closure section having the facing surface opposite the adhesive surface.

88. A bag as claimed in claim 1, wherein the main body has the peripheral wall portion and the bottom portion, the peripheral wall portion having a pair of opposing wall surface portions and a pair of opposing side wall surface portions, the side wall surface portions having a main body gusset portion, the main body gusset portion having a fold line extending downward from the upper end of the side wall surface portion at a predetermined position on the side wall surface portion, the upper end of the side wall surface portion having a first protrusion provided at a first position from the upper end position of the fold line towards a first side edge of one of the side wall surface portions, and a second protrusion provided at a second position from the upper end position of the fold line towards a second side edge of the other of the side wall surface portions, the first protrusion and second protrusion being positioned so as to be able to come into contact with the adhesive surface when the main body gusset portion is closed.

89. A bag as described in claim 1, wherein the main body has the peripheral wall portion, the peripheral wall portion having a pair of opposing wall surface portions and a pair of opposing side wall surface portions, the side wall surface portions having a main body gusset portion, a lid structure forming portion on the upper side of at least one of the wall surface portions and a protrusion portion at the upper end of the side wall surface portion, at least a part of the protrusion facing outward from the wall surface portions when the main body gusset portion is in a contracted state, at least one of the lid structure forming portions is configured to be able to form an opening covering structure by being bent from one wall surface portion to the outer surface side of the other wall surface portion, and has an adhesive layer on the inner surface side of the lid structure forming portion, and in the opening covering structure, the adhesive layer contacts the protrusion from the outer surface side of the peripheral wall portion.

90. A bag as described in claim 89, wherein the pair of opposing wall portions comprises a first wall portion and a second wall portion, the lid structure forming portions comprise a first lid structure forming portion provided on the upper side of the first wall portion and a second lid structure forming portion provided on the upper side of the second wall portion, and when the main body gusset portion is in a contracted state, at least a portion of the protrusion faces the outer surface side of the second lid structure forming portion, and the first lid structure forming portion is configured to cover at least a portion of the second lid structure forming portion and to be bent so that the tip of the first lid structure forming portion is positioned on the outer surface side of the second wall portion to form the opening covering structure.

91. A bag body as set forth in claim 90, wherein the second lid structure forming portion has an exposure facilitating portion, and the protruding portion faces outward from the exposure facilitating portion.

92. A bag body as described in claim 89, wherein, when the lid structure forming portion is in an upright position, the upper edge of the first lid structure forming portion is located higher than the upper edge of the second lid structure forming portion.

93. A bag as set forth in claim 89, wherein at least one of said lid structure formations is integrally formed with the peripheral wall.

94. A bag as set forth in claim 89, wherein at least one of the lid structure forming portions comprises a lid structure forming member formed separately from and adhered to the peripheral wall portion.

95. A bag as described in claim 89, wherein a handle is provided on the outer surface of the peripheral wall portion.

96. The main body has the peripheral wall portion and the bottom portion, the peripheral wall portion having a pair of opposing wall portions, a first wall portion and a second wall portion, a first lid structure forming portion provided on the upper side of the first wall portion and a second lid structure forming portion provided on the upper side of the second wall portion, an adhesive layer on the inner surface side of the first lid structure forming portion, and a weakened portion formed along the surface of the first lid structure forming portion at a predetermined position closer to the bottom than the adhesive layer, the weakened portion being formed so that when the weakened portion is broken, an upper portion close to the tip of the first lid structure forming portion and a lower portion away from the tip of the first lid structure forming portion can be separated using the weakened portion as a reference, and the main body is configured to be able to form an opening covering structure having a structure in which the first lid structure forming portion and the second lid structure forming portion are bent toward the outer surface side of the second wall portion and a structure in which the tip of the first lid structure forming portion is positioned toward the outer surface side of the second wall portion. The bag of claim 1.

97. A bag as described in claim 96, wherein the peripheral wall portion has a pair of opposing side wall surface portions, and has side wall extensions formed by extending upward predetermined portions of the ends of the side wall surface portions, and end extensions formed by extending upward predetermined portions of the side ends of the second lid structure forming portion, and the end edges of the end edge portions of the second lid structure forming portion and the end edges of the end extension portions continuous with the end edges also serve as the end edges of the side wall extensions.

98. A bag as set forth in claim 97, wherein a side wall weakened portion is provided on a side wall extension portion that extends a predetermined portion of the end of the side wall surface portion upward.

99. A bag as described in claim 96, wherein the peripheral wall portion has a pair of opposing side wall surface portions, the side wall surface portions have a main body gusset portion, and a recess is formed by cutting out a recessed shape from the upper end of the second lid structure forming portion toward the bottom, and the recess is configured to expose a part of the side wall surface portions when the main body gusset portion is in a contracted state.

100. A bag as described in claim 99, having a main gusset portion on the side wall surface portion, the side wall surface portion having a plurality of compartments that overlap when the main gusset portion is in a contracted state, and a first through-hole formed in a designated compartment among the plurality of compartments, which is defined as the compartment facing the outline of the recess, at a position corresponding to the recess.

101. A bag as described in claim 100, wherein a second penetration portion is formed in an opposing compartment that is defined as the compartment that faces the designated compartment when the main body gusset portion is in a contracted state among the plurality of compartments, at a position corresponding to the first penetration portion.

102. A bag body as set forth in claim 101, wherein a wall weakening portion is formed in the first wall portion and / or the first lid structure forming portion at a position corresponding to the second penetration portion.

103. The bag according to claim 96, wherein a handle is provided on the outer surface of the peripheral wall portion.

104. A bag body as described in claim 1, wherein the main body has the peripheral wall portion, the peripheral wall portion having a pair of opposing wall surface portions, and a lid structure forming portion on the upper side of at least one of the wall surface portions, the lid structure forming portion being configured so as to be able to form an opening covering structure bent from one wall surface portion to the outer surface side of the other wall surface portion with a predetermined position as a bending axis, and the bag body has, on the inner side of the lid structure forming portion, an adhesive layer at least partially arranged above the bending axis, and a reinforcing sheet arranged in a region from a predetermined position above the bending axis to a predetermined position below the bending axis, and a weakened portion is formed along the bending axis.

105. A bag as described in claim 104, wherein the adhesive layer is adhered to the inner surface of the reinforcing sheet.

106. A bag body as described in claim 104, wherein the peripheral wall portion has a pair of opposing side wall surface portions, the side wall surface portions have a main body gusset portion, and the upper side of the side wall surface portions has an extending wall portion continuous with the lid structure forming portion, and the opening covering structure has a structure in which both the lid structure forming portion and the extending wall portion are bent from one wall surface portion to the outer surface side of the other wall surface portion.

107. A pouch as set forth in claim 106, wherein the weakened portion is further formed in the extending wall portion.

108. A bag body as described in Claim 106, wherein the lid structure forming portion has a portion whose contour is such that the contour of the lid structure forming portion slopes obliquely upward in a direction away from the reference position, which is the upper end of the boundary between the lid structure forming portion and the extending wall portion.

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