Bag

Abstract

Provided is a bag that makes it possible to easily and stably hold a container with a simple operation, as well as to, even if a beverage leaks out of the container, greatly reduce wetting of the bag due to the liquid. This bag comprises a body that includes: a bottom; a peripheral wall connected to the bottom at the peripheral margin of the bottom; a space surrounded by the bottom and the peripheral wall and enabling storage of a content; and an opening through which the content is inserted into the space. The body is provided with a position regulation member including a regulation wall for regulating movement of the content inside the space. The position regulation member is bonded to at least the inner surface of the peripheral wall. When the content is arranged in the space such that the movement thereof is regulated by the regulation wall, and one surface of the regulation wall that faces the the content is defined as an opposing surface, the regulation wall is configured to be able to form a first shape state in which the opposing surface forms a concave surface, and a second shape state in which the opposing surface forms a convex surface.

Description

Bag body

[0001] The present invention relates to a bag body.

[0002] Conventionally, restaurants have provided food and drink such as beverages and food by putting them in simple containers or wrapping them in wrapping paper. In recent years, there are also cases where customers receive food and drink put into containers by themselves. In addition to allowing customers to eat and drink in the store, restaurants also actively provide take-out services, delivery services and the like. A take-out service is a service form in which customers take purchased products home, and a delivery service is a service in which products are delivered to a location designated in advance by the customer.

[0003] Generally, restaurants provide food and drink purchased by customers by accommodating them in a bag body. Various materials have been conventionally used for bag bodies. Commonly used materials include resin materials, paper-based materials and the like. In addition, various shapes of bag bodies have been conventionally available. For example, in addition to bag bodies having a size that can accommodate a plurality of products collectively, there are also bag bodies having a shape that can accommodate only one product, and the like. For example, the bag bodies disclosed in Patent Documents 1 and 2 have a bottom surface portion, side surface portions and an accommodation space. The accommodation space is a space surrounded by the bottom surface portion and the side surface portions, and is formed in a size and shape that can accommodate food and drink. In the present specification, food and drink accommodated in the bag body is referred to as "content" or "product". These terms also include food and drink accommodated in a container when the food and drink is accommodated in the container. However, with the bag bodies disclosed in Patent Documents 1 and 2, when a store clerk puts products into the accommodation space without arranging them properly, the products are prone to tipping over in the accommodation space, and there has been a risk that food and drink accommodated in a container may spill out into the accommodation space. In order to solve such a problem, the cup holder disclosed in Patent Document 3 is known. This cup holder has an opening for holding the lower part of a container, and is used by being accommodated in the accommodation space of the bag body. The container is held so as not to tip over by inserting the lower part thereof into the opening in the accommodation space.

[0004] Utility Model Registration No. 3128559, Japanese Unexamined Patent Application Publication No. 2022-056066, Japanese Unexamined Patent Application Publication No. 2019-038596

[0005] However, this cup holder can be difficult to use if the container is not securely inserted into the opening. For example, in a busy store, there is a risk that the container may not be securely inserted into the opening when serving it to a customer. In such cases, the container may tip over within the storage space, causing the beverage to spill out and wet other items stored together, and / or the bag itself. There is room for improvement in this regard. Also, the cup holder is formed separately from the bag. Therefore, in addition to the conventional task of opening the bag and placing the items in the storage space, store employees need to assemble the cup holder and then place the cup holder into the storage space. This is very time-consuming for employees and may make the work complicated, so there is room for improvement in this regard as well. Furthermore, because the cup holder holds the bottom of the container, the container may shake and easily come loose from the cup holder while the customer is carrying the product home or while the store employee is delivering the product, potentially causing the beverage to spill out of the container. Generally, containers have lids, which reduces the risk of beverages spilling out. However, it is difficult to completely eliminate the risk of beverages leaking through the gap between the container and the lid when the container is shaken, and there was room for improvement in this respect.

[0006] Furthermore, these cup holders need to have sufficient strength to hold the container. For this reason, cup holders have traditionally been manufactured by folding stiff cardboard and / or corrugated cardboard, or by molding pulp. However, since these cup holders often have a three-dimensional shape, stackability during distribution and in-store storage needs to be considered. Therefore, cup holders need to have a structure that is flat during distribution and storage, and easily transforms into a three-dimensional shape when in use. Conventional cup holders have slits and / or folds, making them easy to transform from a flat shape to a three-dimensional shape. However, the presence of such slits and / or folds meant that beverages leaking from the container could pass through the slits and wet the bag.

[0007] This invention has been made in view of the above problems, and aims to provide a bag that can easily and stably hold a container with simple operation, and that can greatly reduce wetting of the bag by the liquid even if a beverage leaks from the container.

[0008] The present invention is summarized in the following (1) to (108): (1) A bag having a body comprising a bottom portion and a peripheral wall portion connected to the bottom portion at the periphery of the bottom portion, forming a space portion enclosed by the bottom portion and the peripheral wall portion and capable of storing contents, and an opening into which the contents are inserted into the space portion, wherein the body is provided with a position regulating member having a regulating wall portion that restricts the movement of the contents within the space portion, the position regulating member is joined to at least the inner surface of the peripheral wall portion, and when the contents are placed in the space portion such that their movement is restricted by the regulating wall portion, and the surface of the regulating wall portion facing the contents is designated as the facing surface, the regulating wall portion 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 inner surface of the peripheral wall portion has at least one corner portion extending from the bottom portion toward the opening, and when the regulating wall portion is in the second shape state, the position regulating member covers at least a part of at least one of the corner portions, as described in (1). (3) The peripheral wall portion has a pair of opposing wall portions and a pair of opposing side wall portions, each of the wall portions is connected to the side wall portion at its side edge, and the corner portion is formed at the boundary position between the wall portion and the side wall portion, as described in (2). (4) The position regulating member is joined to the wall portion and the side wall portion, as described in (3). (5) When the pair of wall portions is a first wall portion and a second wall portion, the pair of side wall portions has a main body gusset portion that changes the distance between the first wall portion and the second wall portion, as described in (3). (6) The bag according to (1) above, wherein the position regulating member further comprises an inner bottom portion that supports the contents from below within the space. (7) The bag according to (6) above, wherein the inner bottom portion has a gusset. (8) The bag according to (1) above, wherein the second shape state is a state in which the regulating wall portion forms a convex surface on the facing surface such that it is aligned with the inner surface of the peripheral wall portion.(9) The bag body according to (1) above, wherein the position regulating member has an intervening wall that is in surface 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 body according to (9) above, wherein when the regulating wall is in the second shape state, the lower end of the regulating wall is located at a position above the lower end of the intervening wall. (11) The bag body according to (10) above, wherein a gap space is formed between the intervening wall and the peripheral wall. (12) The bag body according to (1) above, wherein a folded portion is formed at the upper end of the regulating wall. (13) The bag body according to (1) above, wherein a reinforcing material is provided at the upper end of the regulating wall. (14) The bag body according to (1) above, 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, and the folded portion is formed to cover the reinforcing material. (15) The bag body according to (1) above, wherein the peripheral wall portion has a pair of opposing wall portions, and when the pair of wall portions are a first wall portion and a second wall portion, a lid portion is formed at the upper end of the first wall portion so as to be able to cover the upper end of the second wall portion, and the lid portion is provided with an adhesive placement portion in which an adhesive that can be adhered to the second wall portion is placed when the upper end of the second wall portion is covered by the lid portion. (16) The bag body according to (15) above, wherein a gripping portion is provided at a predetermined position on the first wall portion. (17) The bag body according to (16) above, wherein the gripping portion rises upward when the upper end of the second wall portion is covered by the lid portion. (18) The bag body according to (15) above, wherein the first wall portion is provided at a position avoiding the lid portion, or at a portion of the lid portion avoiding the adhesive placement portion. (19) The bag body described in (1) above, wherein the position regulating member is waterproof. (20) The bag body described in (1) above, wherein the main body is made of a paper-based material. (21) The bag body described in (1) above, wherein a waterproof layer is provided on the upper surface of the bottom.(22) The contents are a container, and when the contents are placed in the space, there is a gap between at least a part of the upper end of the regulating wall and the outer surface of the container, as described in (1) above. (23) The second shape state is a state in which the facing surfaces form a convex surface, as described in (1) above. (24) The inner bottom and the regulating wall are continuously connected, as described in (6) above. (25) When the regulating wall of the position regulating member is in the first shape state, at least a part of the inner bottom has an inclined surface that slopes downward in a direction approaching the circumferential wall from the boundary position between the inner bottom and the regulating wall, as described in (6) above. (26) The bag body described in (15) above, with release paper provided so as to cover the adhesive placement portion. (27) The bag body described in (26) above, with a display portion provided on the exposed surface side of the release paper. (28) The main body comprises a bottom portion and a peripheral wall portion connected to the bottom portion at its periphery, and has a space portion enclosed by the bottom portion and the peripheral wall portion that can store contents, and an opening into which the contents are inserted into the space portion, wherein the peripheral wall portion has a first wall portion and a second wall portion as a pair of opposing wall portions, and an adhesive member having a first adhesive surface forming portion and a second adhesive surface forming portion is attached to the outer surface of the peripheral wall portion, the first adhesive surface forming portion is attached to a predetermined area of ​​the outer surface of the first wall portion, and when a bending structure is formed in which the first wall portion and the second wall portion are bent so that the outer surface of the first wall portion and the outer surface of the second wall portion face each other with a predetermined portion on the upper end side of the first wall portion and a predetermined portion on the upper end side of the second wall portion overlapped, at least a part of the second adhesive surface forming portion is configured to be able to adhere to the outer surface of the second wall portion, If the aforementioned bending structure is not formed, the second adhesive surface forming portion avoids adhesion to the outer surface of the peripheral wall portion, in a bag-like body.(29) The bag according to (28), wherein when the second adhesive surface forming portion is bonded to the peripheral wall portion, a grippable gap can be formed between the first peripheral wall portion forming portion that forms the bending structure and the second peripheral wall portion forming portion excluding the first peripheral wall portion forming portion of the peripheral wall portion. (30) The bag according to (28), wherein when the bending structure is formed, the second adhesive surface forming portion is configured to be bondable to the first wall portion and the second wall portion. (31) The bag according to (28), wherein the bending structure is defined by the portion in which the first wall portion and the second wall portion are bent toward the second wall portion such that the outer surface of the first wall portion and the outer surface of the second wall portion face each other. (32) The bag according to (28) above, wherein the bending structure is defined by the portion in which the first wall portion and the second wall portion are bent toward the first wall portion such that the outer surface of the first wall portion and the outer surface of the second wall portion face each other. (33) The bag according to (28) above, wherein the opening is concealed in the bending structure. (34) The bag according to (28) above, wherein a release member having peelability is attached so as to cover the second adhesive surface forming portion. (35) The bag according to (34) above, wherein the release member is configured so as to avoid complete separation from the adhesive member.(36) The main body comprises a bottom portion and a peripheral wall portion connected to the bottom portion at the periphery of the bottom portion, and has a space portion enclosed by the bottom portion and the peripheral wall portion that can store contents, and an opening into which the contents are inserted into the space portion, wherein the peripheral wall portion has a first wall portion and a second wall portion as a pair of opposing wall portions, and a seal sheet having a seal member having an adhesive surface forming portion attached to the outer surface of the peripheral wall portion is attached, and when a bent structure is formed by bending the first wall portion and the second wall portion so that the outer surface of the first wall portion and the outer surface of the second wall portion face each other when a predetermined portion on the upper end side of the first wall portion and a predetermined portion on the upper end side of the second wall portion are overlapped, 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 portion with the adhesive surface forming portion facing the first wall portion and the second wall portion, A bag body wherein, when the sealing member is adhered to the peripheral wall, a grippable gap is formed between the first peripheral wall forming portion that forms the bending structure and the second peripheral wall forming portion excluding the first peripheral wall forming portion. (37) The bag body according to (36) above, wherein the sealing member has a through hole, and the through hole is configured such that the gap can be exposed from the through hole when the sealing member is adhered to the peripheral wall.(38) The main body comprises a bottom portion and a peripheral wall portion connected to the bottom portion at the periphery of the bottom portion, forming a space enclosed by the bottom portion and the peripheral wall portion and capable of storing contents, and an opening into which the contents are inserted into the space portion, the peripheral wall portion having a first wall portion and a second wall portion as a pair of opposing wall portions, the peripheral wall portion having a small piece portion having an adhesive surface on which adhesive material is placed, the small piece portion having a fixed end fixed to the peripheral wall portion and a free end that is displaceable relative to the peripheral wall portion, and at least the free end of the small piece portion being able to rotate about the fixed end as an axis, the small piece portion having a small piece portion facing surface at a position that can face the adhesive surface and a peelable portion being provided that can be re-peelably adhered to the small piece portion at the small piece portion facing surface, the position in which the peelable portion is provided is a position that avoids exposure to the outside of the main body, (39) The bag body according to (38), wherein at least a portion of the small piece portion is peeled off from the peelable portion and bent, and the small piece portion is configured to be adhered to the peripheral wall portion in the area of ​​the adhesive-adhering surface in such a state that movement that separates the first wall portion and the second wall portion is prevented. (40) The bag body according to (38), wherein the peelable portion is formed separately from the peripheral wall portion and is made of release paper. (41) The bag body according to (40), wherein the adhesive portion is formed separately from the peripheral wall portion and is adhered to the peripheral wall portion, a portion of the adhesive portion forms the small piece portion, and the release paper has a surface opposite to the surface facing the small piece portion adhered to the adhesive portion. (42) The bag body according to (40) above, wherein an adhesive element formed separately from the peripheral wall is adhered to the peripheral wall, a part of the adhesive element forms the small piece, the adhesive element is adhered to the outer surface of the peripheral wall, and the release paper is adhered to the inner surface of the peripheral wall.(43) The bag body according to (38), wherein the small pieces and the peelable parts are provided at multiple locations, and each peelable part is provided at a position corresponding to each of the small pieces. (44) The bag body according to (38), wherein a tab configured to be grippable extends from the free end side of the small pieces.(45) The main body has at least one corner portion on the inner surface of the peripheral wall portion extending from the bottom portion toward the opening, the main body is composed of a folded structure made by folding a blank material made of a paper-based material, and the position regulating member is joined to the inner surface 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 to the upper edge portion of the blank material, and has a first blank material side end and a second blank material side end as blank material side ends located on opposite ends to each other and connected to the upper edge portion and the lower edge portion of the blank material, and has a first overlapping structure corresponding portion determined by a predetermined portion of the first blank material side end and a second overlapping structure corresponding portion determined by a predetermined portion of the second blank material side end as overlapping structure corresponding portions for joining a predetermined portion inside from the first blank material side end and a predetermined portion inside from the second blank material side end to each other, The folded structure has side-edge bonding 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 side of the folded structure, and in the blank material, the area that is intended to face the position regulating member is designated as the intended facing area, the position where the blank material is folded at the portion corresponding to the corner is designated as the corner corresponding bending position, and the area of ​​the first overlapping structure corresponding portion that faces inward of the folded structure is designated as the first inward-facing area, and the area of ​​the second overlapping structure corresponding portion that faces inward of the folded structure is designated as the second inward-facing area, and at least one of the intended facing area is an area that avoids the second inward-facing area, is an area that crosses the corner corresponding bending position, and is determined so that one of the two side edges of the intended facing area is located in the first inward-facing area, as described in (1) above.(46) The bag body according to (45) above, wherein in the blank material, the portion of the first overlapping structure corresponding portion corresponding to the side end adhesive portion is designated as the adhesive portion corresponding portion (A), and the portion corresponding to the portion that joins the position regulating member and the bending structure is designated as the adhesive portion corresponding portion (B), and 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) above, wherein the main body has a handle structure bonded to the bending structure, and in the blank material, the portion corresponding to the portion to be bonded to the handle structure is designated as the handle adhesive region, and the handle adhesive region is defined as a region that does not cross the edge of the side end of the blank material in the state of the bending structure. (48) The peripheral wall portion has a pair of opposing wall portions and a pair of opposing side wall portions, each of the wall portions is connected to the side wall portion at the side edge of the wall portion, the main body is composed of a folded structure made by folding a blank material made of a paper-based material, and the position regulating member is joined to the inner surface of the folded structure, the blank material has an upper side edge portion of the blank material that forms the opening and a lower side edge portion of the blank material that is formed on the opposite side of the upper side edge portion of the blank material, The folded structure has a pair of first inward folded portions, which are formed by folding a pair of first lower portions, determined from the lower end of each of the side wall portions of the blank material to the lower edge of the blank material, inward of the folded structure; and a pair of second inward folded portions, which are formed by folding a pair of second lower portions, determined from the lower end of each of the side wall portions of the blank material to the lower edge of the blank material, inward of the folded structure on the lower surface side of the first lower portions; and an overlapping structure portion, which is determined as the portion where the pair of second inward folded portions overlap each other; and a lower end folded portion is formed on at least one of the pair of second inward folded portions by folding back the lower edge of the blank material; and at least a part of the lower end folded portion is arranged in the overlapping structure portion. The bag body as described in (1) above.(49) The bag body according to (48), wherein the second inward folded portion has a diagonal folded portion obtained by folding the blank material with a straight line extending diagonally with respect to the lower edge of the lower side edge of the blank material as the folding axis, the first inward folded portion is connected to the diagonal 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 side edge of the blank material. (50) The bag body according to (1), wherein in at least the second shape state, the position regulating member has a folded structure portion on the regulating wall portion. (51) The bag body according to (1), wherein the peripheral wall portion has a first wall portion and a second wall portion as a pair of opposing wall portions, and at least one position regulating member is joined to the first wall portion and the second wall portion. (52) The bag body according to (1), wherein an insert material is provided on the upper side of the bottom portion. (53) The bag body according to (1) above, wherein the insole material is a resin sheet. (54) The bag body according to (53) above, wherein the insole material covers a predetermined area on the lower end side of the bottom and the peripheral wall. (55) The bag body according to (1) above, wherein the peripheral wall has a pair of opposing wall surfaces and a pair of opposing side wall surfaces, and when the pair of wall surfaces are a first wall surface and a second wall surface, the pair of side wall surfaces has a main body gusset that changes the distance between the first wall surface and the second wall surface, and a deformation restricting structure is provided that can restrict the deformation of the main body gusset when the main body gusset is folded at a predetermined position on the side wall. (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 so as to face a predetermined area of ​​the surface of the handle sheet portion 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 joined 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 joined 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 joined to the surface of the handle sheet portion, and the reinforcing material is a nonwoven fabric.(60) The reinforcing material is partially joined to the handle sheet portion, and the nonwoven fabric contains long fibers, as described in (59) above. (61) 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, as described in (56) above. (62) The handle sheet portion is formed integrally with the main body, as described in (56) above. (63) The handle sheet portion is formed separately from the main body, and the handle sheet portion and the main body are joined in a portion inside the side end of the handle sheet portion, as described in (56) above. (64) The peripheral wall portion has a pair of opposing wall portions, and the handle sheet portion is provided on each of the pair of wall portions, and the width of the handle sheet portion is smaller than the width of the side wall portion, as described in (56) above. (65) The bag body according to (56) above, wherein the peripheral wall portion has a pair of opposing wall portions, the handle sheet portion is provided on each of the pair of wall portions, and an adhesive is provided on the handle sheet portion provided on at least one of the side wall portions. (66) The bag body according to (1) above, wherein the main body is provided with a handle portion, the handle portion has a handle support sheet portion, a notch 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 of the contours of the notch portion, 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) The periphery wall portion has a pair of opposing wall portions and a pair of opposing side wall portions, each of the wall portions is connected to the side wall portion at the side edge of the wall portion, the main body is composed of a folded structure made by folding a blank material made of a paper-based material, and the position regulating member is joined to the inner surface of the folded structure, the position regulating member is configured in a continuous strip shape arranged from one side edge of the blank material toward the other side edge, and is joined to the blank material at a predetermined position, the bag body as described in (1) above. (68) The bag body according to (67), wherein the regulating member joint that joins the position regulating member and the blank material is composed of a plurality of unit joints provided independently of each other and at different positions, at least one of the regulating wall portions is formed by a portion sandwiched between at least one pair of unit joints from 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 body according to (1), wherein the position regulating member is water-absorbent. (70) The bag body according to (1), wherein the position regulating member has a plurality of regulating wall penetrations. (71) The bag body according to (1), wherein the position regulating member is composed of a fiber bundle made of a plurality of long fibers arranged in a row. (72) The bag body according to (1), wherein the area of ​​the facing surface of the regulating wall portion is larger than the area of ​​the region of the surface of the peripheral wall portion corresponding to the facing surface. (73) The bag body according to (1) above, wherein in the second shape state, an overlapping portion is formed in the regulating wall portion.(74) The main body is configured such that its three-dimensional structure can be transformed from a first structure to a second structure, and when the main body is the first structure, the main body has a pair of folded wall surfaces that are folded to form a gusset from the upper end to the lower end, and opposing wall surfaces that face each other with the folded wall surfaces in between, and each of the two side edges of each of the opposing wall surfaces is connected to the folded wall surface, 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 that faces the first lower edge, and when the main body is the second structure, the main body has a gusset on the peripheral wall, the bottom, and the side wall surfaces, The periphery wall portion has a pair of opposing wall portions and a pair of opposing side wall portions, each of the wall portions is connected to the side wall portion by two side edges, and has a corner portion at the boundary between the wall portion and the side wall portion, and the bag body according to (1) above is configured such that the three-dimensional structure of the main body is transformed from the first structure to the second structure by bending the main body to satisfy the following conditions from the first to the fourth. Condition 1 The gusset portion of the first structure is widened. Condition 2 The folded wall portion is folded inward using a predetermined reference position extending upward from the lower end of each folded wall portion as the first folding axis, thereby making the portion of the folded wall portion above the reference position the side wall portion. Condition 3 In the portion of the folded wall portion below the reference position, the portion of the folded wall portion is folded inward using a straight line running diagonally from the outer end of the folded wall portion toward the inner end of the lower edge joint as the second folding axis. Condition 4 The opposing wall portion is folded using a straight line connecting two positions connected to the reference position on each of the two side edges of the opposing wall portion as the third folding axis, thereby making the portion of the opposing wall portion above the folding axis the wall portion. (75) At least the lower edge of the opposing wall portion is joined to the bag body as described in (74) above. (76) The bag body according to (74) above, wherein a crease is formed at a position corresponding to at least one of the third bending axes from the first bending axis. (77) The bag body according to (1) above, wherein it has a suspension device receiving structure.

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

[0010] Figure 1A is a plan view (top view) illustrating one embodiment of the first embodiment. Figure 1B is a front view illustrating one embodiment of the first embodiment. Figure 1C is a side view illustrating one embodiment of the first embodiment. Figure 2A is a plan view illustrating one embodiment of the first embodiment. Figure 2B is a front view illustrating one embodiment of the usage state of the bag according to the first embodiment. Figure 3A is a schematic cross-sectional view showing the state of the cross-section along line A-A in Figure 1A. Figure 3B is a schematic cross-sectional view showing the state of the cross-section along line B-B in Figure 2B. Figures 4A to 4C are diagrams illustrating the manufacturing process of the bag according to the first embodiment. Figures 5A to 5C are diagrams illustrating the manufacturing process of the bag according to the first embodiment. Figure 5D is a schematic partial cross-sectional view illustrating one embodiment in which a waterproof sheet is provided as a waterproof layer at the bottom. Figures 6A to 6C are plan views illustrating one embodiment of the first embodiment. Figures 7A to 7D are plan views illustrating one embodiment of the first embodiment. Figure 8A is a plan view (top view) illustrating one embodiment of the second embodiment. Figure 8B is a front view illustrating one embodiment of the second embodiment. Figure 8C is a side view illustrating one embodiment of the second embodiment. Figure 9A is a schematic cross-sectional view showing the state of the section along line C-C in Figure 8A. Figure 9B is a partial cross-sectional view illustrating one embodiment of the usage state of the bag according to the second embodiment. Figure 10 is a partial cross-sectional view illustrating one embodiment of the second embodiment. Figures 11A and 11B are plan views illustrating an embodiment of the position regulating member. Figures 12A and 12B are diagrams illustrating an embodiment of the joint between the intervening wall and the peripheral wall of the position regulating member. Figure 13A is a plan view (top view) illustrating one embodiment of the third embodiment. Figure 13B is a front view illustrating one embodiment of the third embodiment. Figure 13C is a side view illustrating one embodiment of the third embodiment. Figure 14A is a schematic cross-sectional view showing the state of the section along line D-D in Figure 13A. Figure 14B is a partial cross-sectional view illustrating one example of the usage state of the bag according to the third embodiment. Figures 15A to 15C are partial cross-sectional views illustrating one example of the third embodiment.Figure 16 is a partial cross-sectional view illustrating one example of the usage state of the bag according to the third embodiment. Figures 17A and 17B are partial cross-sectional views illustrating one example of the usage state of the third embodiment. Figures 18A, 18B, and 18C are partial cross-sectional views illustrating one example of the fourth embodiment. Figures 19A and 19B are partial cross-sectional views illustrating one example of the fourth embodiment. Figures 20A, 20B, and 20C are partial cross-sectional views illustrating one example of the usage state of the fourth embodiment. Figure 21A is a plan view (top view) illustrating one example of the fifth embodiment. Figure 21B is a front view illustrating one example of the usage state of the fifth embodiment. Figure 21C is a side view illustrating one example of the usage state of the fifth embodiment. Figure 22A is a plan view (top view) illustrating one example of the usage state of the bag according to the fifth embodiment. Figure 22B is a front view illustrating one example of the usage state of the bag according to the fifth embodiment. Figure 22C is a side view illustrating one example of the usage state of the bag according to the fifth embodiment. Figure 23A is a plan view (top view) illustrating one embodiment of the fifth embodiment. Figure 23B is a front view illustrating one embodiment of the fifth embodiment. Figure 23C is a side view illustrating one embodiment of the fifth embodiment. Figure 24A is a plan view (top view) illustrating one embodiment of the usage state of the bag according to the fifth embodiment. Figure 24B is a front view illustrating one embodiment of the usage state of the bag according to the fifth embodiment. Figure 24C is a side view illustrating one embodiment of the usage state of the bag according to the fifth embodiment. Figure 25A is a front view illustrating one embodiment of the fifth embodiment. Figure 25B is a perspective view illustrating one embodiment of the usage state of the bag according to the fifth embodiment. Figure 26 is an exploded perspective view illustrating one embodiment of the fifth embodiment. Figure 27A is a plan view (top view) illustrating one embodiment of the seventh embodiment. Figure 27B is a rear view illustrating one embodiment of the seventh embodiment. Figure 27C is a side view illustrating one embodiment of the seventh embodiment. Figure 28A is a perspective view illustrating one embodiment of the seventh embodiment.Figure 28B is a schematic cross-sectional view showing the state of the section along line A1-A1 in Figure 28A, and an enlarged cross-sectional view showing an enlarged view of the portion of the dashed line XP1. Figure 29A is a perspective view illustrating one embodiment of the seventh embodiment. Figure 29B is a schematic cross-sectional view showing the state of the section along line A2-A2 in Figure 29A. Figure 30A is a perspective view illustrating one embodiment of the seventh embodiment. Figure 30B is a schematic cross-sectional view showing the state of the section along line A3-A3 in Figure 30A. Figure 31 is a perspective view illustrating one embodiment of the main body. Figure 32 is a perspective view illustrating one embodiment of the main body. Figure 33A is a perspective view illustrating one embodiment of the eighth embodiment. Figure 33B is a perspective view illustrating a state in which a bent structure has been formed in one embodiment of the eighth embodiment. Figure 34A is a perspective view illustrating one embodiment of the eighth embodiment. Figure 34B is a perspective view illustrating a state in which a bent structure has been formed in one embodiment of the eighth embodiment. Figure 35A is a perspective view illustrating one embodiment of the eighth embodiment. Figure 35B is a perspective view illustrating a state in which a bent structure has been formed in one embodiment of the eighth embodiment. Figure 36A is a perspective view illustrating a state in which a bent structure has been formed in one embodiment of the seventh embodiment. Figure 36B is a perspective view illustrating a state in which a bent structure has been formed in one embodiment of the seventh embodiment. Figure 37B is a schematic cross-sectional view showing the state of the cross-section along line B1-B1 in Figure 33A. Figure 37B is a schematic cross-sectional view showing the state of the cross-section along line B2-B2 in Figure 33A. Figure 38A is a front view illustrating a state in which a bag according to the ninth embodiment has been formed. Figure 38B is a perspective view illustrating a state in which a bag according to the ninth embodiment has been used. Figure 39A is a plan view (top view) illustrating a state in which a bag according to the tenth embodiment has been formed. Figure 39B is a front view illustrating a state in which a bag according to the tenth embodiment has been formed. Figure 39C is a side view illustrating a state in which a bag according to the tenth embodiment has been formed. Figure 40A is a plan view (top view) illustrating a state in which a bag according to the tenth embodiment has been used. Figure 40B is a front view illustrating one example of how the bag is used according to the tenth embodiment. Figure 40C is a side view illustrating one example of how the bag is used according to the tenth embodiment.Figure 41A is a plan view (top view) illustrating one embodiment of the 10th embodiment. Figure 41B is a front view illustrating one embodiment of the 10th embodiment. Figure 41C is a side view illustrating one embodiment of the 10th embodiment. Figure 42A is a plan view (top view) illustrating one embodiment of a 2nd modification of the 10th embodiment. Figure 42B is a front view illustrating one embodiment of a 2nd modification of the 10th embodiment. Figure 42C is a side view illustrating one embodiment of a 2nd modification of the 10th embodiment. Figure 43A is a plan view (top view) illustrating one embodiment of the usage state of the bag according to a 2nd modification of the 10th embodiment. Figure 43B is a front view illustrating one embodiment of the usage state of the bag according to a 2nd modification of the 10th embodiment. Figure 43C is a side view illustrating one embodiment of the usage state of the bag according to a 2nd modification of the 10th embodiment. Figure 44A is a plan view (top view) illustrating one embodiment of a 2nd modification of the 10th embodiment. Figure 44B is a front view illustrating one embodiment of Modification 2 of the 10th embodiment. Figure 44C is a side view illustrating one embodiment of Modification 2 of the 10th embodiment. Figure 45A is a top view illustrating one embodiment of the usage state of the bag according to Modification 2 of the 10th embodiment. Figure 45B is a front view illustrating one embodiment of the usage state of the bag according to Modification 2 of the 10th embodiment. Figure 45C is a side view illustrating one embodiment of the usage state of the bag according to Modification 2 of the 10th embodiment. Figure 46A is a perspective view illustrating one embodiment of the usage state of the bag according to Modification 2 of the 10th embodiment. Figure 46B is a perspective view illustrating one embodiment of the usage state of the bag according to Modification 2 of the 10th embodiment. Figure 47A is a front view illustrating one embodiment of Modification 2 of the 10th embodiment. Figure 47B is a perspective view illustrating one embodiment of the usage state of the bag according to Modification 2 of the 10th embodiment. Figure 5A is a diagram illustrating an example of a blank material for forming a bag according to the second embodiment. Figure 5B is a schematic cross-sectional view showing the state of the longitudinal section along line D1-D1 in Figure 5A. Figure 49 is a diagram illustrating an example of a blank material for forming a bag according to the first embodiment.Figure 50A is a diagram showing a part of a bag according to the first embodiment, and is a diagram for explaining an example of a bag. Figure 50B is a schematic cross-sectional view showing the state of the longitudinal section along line D2-D2 in Figure 50A. Figure 51A is a diagram showing a part of a bag according to the first embodiment, and is a diagram for explaining an example of a bag. Figure 51B is a schematic cross-sectional view showing the state of the longitudinal section along line D3-D3 in Figure 51A. Figure 52A is a diagram showing a part of a container that can be placed in the bag according to the first embodiment. Figure 52B is a schematic cross-sectional view showing the state in which the container of Figure 52A is stored in the bag. Figures 53A and 53B are diagrams showing the process of placing a position regulating member on a blank material. Figure 54A is a plan view (top view) for explaining one embodiment of the eleventh embodiment. Figure 54B is a front view for explaining one embodiment of the eleventh embodiment. Figure 54C is a diagram for explaining a small piece in one embodiment of the eleventh embodiment. Figure 54D is a schematic cross-sectional view illustrating the state of the cross-section corresponding to the section along line E1-E1 in Figure 54B. Figure 55A is a diagram illustrating the movement of the small piece portion in one embodiment of the 11th embodiment. Figure 55B is a schematic cross-sectional view illustrating the state of the cross-section corresponding to the section along line E2-E2 in Figure 55A. Figure 55C is a side view illustrating the state in which the small piece portion restricts the expansion of the opening of the bag in one embodiment of the first embodiment. Figure 55D is a schematic cross-sectional view illustrating the adhesion state between the small piece portion and the peripheral wall portion of the bag in Figure 55C. Figure 56A is a cross-sectional view illustrating one embodiment of the small piece portion and the peelable portion in Modification 1 of the 11th embodiment. Figure 56B is a cross-sectional view illustrating one embodiment of the small piece portion and the peelable portion in Modification 2 of the 11th embodiment. Figure 57A is a plan view (top view) illustrating one embodiment of Modification 3 of the 11th embodiment. Figure 57B is a front view illustrating one embodiment of Modification 3 of the 11th embodiment. Figure 57C is a diagram illustrating the small piece portion in one embodiment of the 11th embodiment, modification 3. Figure 57D is a schematic cross-sectional view showing the state of the cross-section corresponding to the E3-E3 section in Figure 57B. Figure 58A is a diagram illustrating the movement of the small piece portion in one embodiment of the 11th embodiment, modification 3. Figure 58B is a schematic cross-sectional view showing the state of the cross-section corresponding to the E4-E4 section in Figure 58A.Figure 58C is a side view illustrating a state in which the small piece restricts the expansion of the opening of the bag in one embodiment of the first embodiment. Figure 58D is a cross-sectional view schematically illustrating the adhesion state between the small piece and the peripheral wall of the bag in Figure 58C. Figure 59A is a plan view (top view) illustrating a state in which the small piece restricts the expansion of the opening of the bag in one embodiment of the 11th embodiment. Figure 59B is a front view illustrating a state in which the small piece restricts the expansion of the bag in one embodiment of the 11th embodiment. Figure 59C is a diagram illustrating the small piece in one embodiment of the 11th embodiment. Figure 59D is a cross-sectional view schematically showing the state of the cross-section corresponding to the E5-E5 cross-section in Figure 59B. Figure 60A is a diagram illustrating the movement of the small piece in one embodiment of the 11th embodiment. Figure 60B is a cross-sectional view schematically showing the state of the cross-section corresponding to the E6-E6 cross-section in Figure 60A. Figure 60C is a side view illustrating a state in which the small piece restricts the expansion of the opening of the bag in one embodiment of the first embodiment. Figure 60D is a schematic cross-sectional view illustrating the adhesion between the small piece portion and the peripheral wall portion of the bag body shown in Figure 60C. Figure 61A is a plan view (top view) illustrating one embodiment of Modification 5 of the 11th embodiment. Figure 61B is a front view illustrating one embodiment of Modification 5 of the 11th embodiment. Figure 61C is a front view illustrating one embodiment of Modification 5 of the 11th embodiment. Figure 62A is a diagram illustrating the tab in one embodiment of Modification 6 of the 11th embodiment. Figure 62B is a schematic cross-sectional view illustrating the state of the cross-section corresponding to the E7-E7 section in Figure 62A. Figure 63A is a diagram illustrating the tab in one embodiment of Modification 6 of the 11th embodiment. Figure 63B is a schematic cross-sectional view illustrating the state of the cross-section corresponding to the E8-E8 section in Figure 63A. Figure 63C is a cross-sectional view illustrating the tab in one embodiment of Modification 6 of the 11th embodiment. Figure 64A is a cross-sectional view illustrating the receiving portion in one embodiment of the 6th embodiment. Figure 64B is a schematic cross-sectional view showing a state in which a container is contained in one embodiment of the bag body according to the sixth embodiment. Figure 64C is a cross-sectional view illustrating the receiving portion in one embodiment of the sixth embodiment. Figure 65A is a plan view illustrating one embodiment of the bag body according to the twelfth embodiment.Figure 65B is a front view illustrating an embodiment of the bag according to the twelfth embodiment. Figure 65C is a diagram illustrating an embodiment of the inner bonding piece and peelable portion provided on the bag according to the twelfth embodiment. Figure 65D is a schematic cross-sectional view showing the state of the section along line G1-G1 in Figure 65B. Figure 66A is a diagram illustrating an embodiment of the bag according to the twelfth embodiment in which the inner bonding piece has been separated from the peelable portion. Figure 66B is a schematic cross-sectional view showing the state of the section along line G2-G2 in Figure 66A. Figure 65C is a side view illustrating an embodiment of the bag according to the twelfth embodiment. Figure 66D is a diagram illustrating an embodiment of the bag according to the twelfth embodiment in which the wall portion has been bonded with the inner bonding piece. Figure 67A is a plan view illustrating an embodiment of the bag according to the thirteenth embodiment. Figure 67B is a front view illustrating an embodiment of the bag according to the thirteenth embodiment. Figure 67C is a plan view illustrating one embodiment of a blank material for forming a folded structure constituting a bag according to the thirteenth embodiment. Figures 68A, 68B, and 68C are plan views illustrating one embodiment of a blank material for forming a folded structure constituting a bag according to the twelfth embodiment, respectively. Figure 69A is a plan view illustrating one embodiment of a bag according to the thirteenth embodiment. Figure 69B is a front view illustrating one embodiment of a bag according to the thirteenth embodiment. Figure 69C is a plan view illustrating one embodiment of a blank material for forming a folded structure constituting a bag according to the thirteenth embodiment. Figure 70A is a plan view illustrating one embodiment of a bag according to the fourteenth embodiment. Figure 70B is a front view illustrating one embodiment of a bag according to the fourteenth embodiment. Figure 70C is a bottom view illustrating one embodiment of a bag according to the fourteenth embodiment. Figure 71A is a plan view illustrating one embodiment of a blank material for forming a bag according to the fourteenth embodiment. Figure 71B is a perspective view illustrating the process of manufacturing a bag, and is a perspective view illustrating one embodiment of a cylindrical structure. Figures 72A and 72B are perspective views illustrating the process of manufacturing a bag according to the 14th embodiment.Figure 73A is a plan view illustrating an example of a blank material for forming a bag according to the 14th embodiment. Figure 73B is a bottom view illustrating an example of a bag according to the 14th embodiment. Figure 74A is a plan view illustrating an example of a bag according to the 15th embodiment. Figure 74B is a front view illustrating an example of a bag according to the 15th embodiment. Figure 74C is a schematic cross-sectional view showing the state of the H1-H1 cross-section in Figure 74A. Figure 74D is a plan view illustrating an example of a bag according to the 15th embodiment. Figures 75A and 75B are plan views illustrating an example of a bag according to the 15th embodiment. Figures 76A and 76B are plan views illustrating an example of a bag according to the 15th embodiment. Figure 77A is a plan view showing an example of a position regulating member. Figure 77B is a plan view illustrating an example of a bag according to the 15th embodiment. Figure 77C is a schematic cross-sectional view showing the state of the H2-H2 cross-section in Figure 77B. Figure 78A is a front view illustrating an embodiment of the bag according to the 16th embodiment. Figure 78B is a schematic cross-sectional view showing the state of the section along line I1-I1 in Figure 78A. Figure 78C is a front view illustrating an embodiment of the bag according to the 16th embodiment. Figures 75A and 75B are cross-sectional views illustrating an embodiment of the bag according to the 16th embodiment. Figure 80A is a front view illustrating an embodiment of the bag according to the 16th embodiment. Figure 80B is a schematic cross-sectional view showing the state of the section along line I2-I2 in Figure 80A. Figure 80C is a cross-sectional view illustrating the usage state of an embodiment of the bag according to the 16th embodiment. Figure 81 is a plan view illustrating an embodiment of the blank material for the bag according to the 16th embodiment. Figures 82A and 82B are partial cross-sectional views illustrating an embodiment of the bottom of the bag according to the 16th embodiment. Figure 83A is a front view illustrating an embodiment of the bag according to the 17th embodiment. Figure 82B is a partial cross-sectional view illustrating an embodiment of the bottom of the bag according to the 17th embodiment. Figures 84A and 84B are partial cross-sectional views illustrating an embodiment of the bottom of the bag according to the 17th embodiment. Figure 85A is a perspective view illustrating an embodiment of the bag according to the 18th embodiment.Figure 85B is a plan view illustrating an embodiment of the bag according to the 18th embodiment. Figure 86A is a perspective view illustrating an embodiment of the bag according to the 18th embodiment. Figure 86B is a plan view illustrating an embodiment of the bag according to the 18th embodiment. Figures 87A to 87C are plan views illustrating an embodiment of the bag according to the 18th embodiment. Figure 88A is a diagram illustrating an embodiment of the gusset joint. Figure 88B is a cross-sectional view illustrating an embodiment of the gusset joint. Figure 88B is a cross-sectional view illustrating an embodiment of the gusset joint in use. Figures 89A to 89B are plan views illustrating an embodiment of the bag according to the 18th embodiment. Figure 90A is a cross-sectional view illustrating an embodiment of the gusset joint. Figure 90B is a cross-sectional view illustrating an embodiment of the gusset joint in use. Figure 91A is a cross-sectional view illustrating an embodiment of the gusset joint. Figure 91B is a cross-sectional view illustrating an embodiment of the gusset joint in use. Figure 92A is a cross-sectional view illustrating one embodiment of the gusset joint. Figure 92B is a cross-sectional view illustrating one embodiment of the gusset joint in use. Figure 93 is a perspective view illustrating one embodiment of the bag according to the 18th embodiment. Figure 94 is a perspective view illustrating one embodiment of the bag according to the 18th embodiment. Figure 95 is a perspective view illustrating one embodiment of the bag according to the 18th embodiment. Figure 96 is a perspective view illustrating one embodiment of the bag according to the 18th embodiment. Figure 97A is a perspective view illustrating one embodiment of the bag according to the 19th embodiment. Figure 97B is a plan view illustrating one embodiment of the bag according to the 19th embodiment. Figure 98A is a perspective view illustrating one embodiment of the bag according to the 20th embodiment. Figure 98B is a plan view illustrating one embodiment of the bag according to the 20th embodiment. Figure 99A is a front view illustrating one embodiment of the bag according to the 21st embodiment. Figure 99B is a side view illustrating one embodiment of the bag according to the 21st embodiment, and a partially enlarged cross-sectional view illustrating the cross-section of the handle portion obtained by cutting the portions XSS1 and XSS2, enclosed by dashed lines, in the vertical direction so as to pass through the sheet penetration portion.Figure 99C is a plan view illustrating an embodiment of the bag according to the 21st embodiment. Figures 100A to 100D are partial cross-sectional views schematically illustrating the handle portion in an embodiment of the bag according to the 21st embodiment. Figures 101A to 101C are partial cross-sectional views schematically illustrating the handle portion in an embodiment of the bag according to the 21st embodiment. Figures 102A to 102C are partial cross-sectional views schematically illustrating the handle portion in an embodiment of the bag according to the 21st embodiment. Figure 103A is a front view illustrating an embodiment of the bag according to the 21st embodiment. Figure 103B is a plan view illustrating an embodiment of the bag according to the 21st embodiment. Figure 104A is a front view illustrating an embodiment of the bag according to the 21st embodiment. Figure 104B is a partial cross-sectional view schematically illustrating the handle portion in an embodiment of the bag according to the 21st embodiment. Figure 104C is a partial cross-sectional view schematically illustrating the handle portion in an embodiment of the bag according to the 21st embodiment. Figures 105A to 105B are partial cross-sectional views schematically illustrating the handle portion of an embodiment of the bag according to the 21st embodiment. Figure 106A is a front view illustrating an embodiment of the bag according to the 21st embodiment. Figure 106C is a partial cross-sectional view schematically illustrating the handle portion of an embodiment of the bag according to the 21st embodiment. Figure 106D is a partial cross-sectional view schematically illustrating the handle portion of an embodiment of the bag according to the 21st embodiment. Figure 107A is a partial cross-sectional view schematically illustrating the handle portion of an embodiment of the bag according to the 21st embodiment. Figure 107B is a partial cross-sectional view schematically illustrating the handle portion of an embodiment of the bag according to the 21st embodiment. Figure 107C is a side view illustrating an embodiment of the bag according to the 21st embodiment. Figure 108A is a front view illustrating an embodiment of the bag according to the 22nd embodiment. Figure 108B is a side view illustrating one embodiment of the bag according to the 22nd embodiment, and a partially enlarged cross-sectional view illustrating the cross-section of the handle portion obtained by cutting the portions XSS3 and XSS4, enclosed by dashed lines, in the vertical direction so as to pass through the sheet penetration portion.Figure 108C is a plan view illustrating an embodiment of the bag according to the 22nd embodiment. Figures 109A to 109B are front views illustrating an embodiment of the bag according to the 22nd embodiment. Figure 110A is a front view illustrating an embodiment of the bag according to the 23rd embodiment. Figure 110B is a side view illustrating an embodiment of the bag according to the 23rd embodiment, and a partially enlarged cross-sectional view illustrating the cross-section of the handle portion obtained by cutting the portions XSS5 and XSS6, enclosed by dashed lines, vertically so as to pass through the sheet penetration portion. Figure 110C is a plan view illustrating an embodiment of the bag according to the 23rd embodiment. Figure 111A is a front view illustrating an embodiment of the bag according to the 17th embodiment. Figure 111B is a plan view illustrating an embodiment of the bag according to the 17th embodiment. Figures 112A to 112B are diagrams illustrating the manufacturing process of the bag according to the 27th embodiment. Figure 113A is a front view illustrating an embodiment of the bag according to the 25th embodiment. Figure 113B is a side view illustrating an embodiment of the bag according to the 25th embodiment, and a partially enlarged cross-sectional view illustrating the cross-section of the handle portion obtained by cutting the portion XSS7 enclosed by the dashed line in the vertical direction so as to pass through the sheet penetration portion. Figure 113C is a plan view illustrating an embodiment of the bag according to the 25th embodiment. Figure 114A is a front view illustrating an embodiment of the bag according to the 26th embodiment. Figure 114B is a side view illustrating an embodiment of the bag according to the 26th embodiment. Figure 114C is a partially enlarged plan view illustrating the main part of an embodiment of the bag according to the 26th embodiment. Figure 114D is a diagram illustrating the inner surface of the wall portion including the handle mounting portion in an embodiment of the bag according to the 26th embodiment. Figure 114E is a schematic cross-sectional view schematically showing the state of the cross-section along the line J1-J1 in Figure 114D. Figures 115A to 115B are diagrams illustrating the manufacturing process of the bag according to the 28th embodiment. Figure 116 is a diagram illustrating one embodiment of a blank material for forming a bag according to the 28th embodiment. Figure 117 is a partial perspective view illustrating one embodiment of a position regulating member used in a bag according to the 29th embodiment.Figure 118 is a partial perspective view illustrating an embodiment of a position regulating member used in a bag according to the 30th embodiment. Figure 119 is a partial perspective view illustrating an embodiment of a position regulating member used in a bag according to the 31st embodiment. Figure 120A is a diagram illustrating an embodiment of a textured roller used in an apparatus for manufacturing a bag according to the 31st embodiment. Figure 120B is a cross-sectional view illustrating an example of the use of the textured roller in the manufacturing process of a bag according to the 31st embodiment. Figure 121A is a diagram illustrating an embodiment of a blank material for forming a bag according to the 31st embodiment. Figure 121B is a schematic cross-sectional view schematically showing the state of the section along the line J2-J2 in Figure 121A. Figure 121C is a diagram illustrating an embodiment of a blank material for forming a bag according to the 31st embodiment. Figure 122A is a front view illustrating an embodiment of a bag when the bag according to the 32nd embodiment has the first structure. Figure 122B is a diagram illustrating an embodiment of the state of the lower end of the bag when arrow DE1 is the line of sight in Figure 122A. Figure 122C is a diagram illustrating one embodiment of the state of the upper end of the bag when arrow DE2 in Figure 122A is the line of sight. Figure 122C is a side view illustrating one embodiment of the bag when the bag according to the 32nd embodiment has the first structure. Figure 123A is a front view illustrating one embodiment of the bag when the bag according to the 32nd embodiment has the second structure. Figure 123B is a diagram illustrating the state of the upper end of the bag when the bag according to the 32nd embodiment has the second structure. Figure 123C is a side view illustrating one embodiment of the bag when the bag according to the 32nd embodiment has the second structure. Figure 124 is a perspective view illustrating the state when the area XS enclosed by the dashed line in Figure 123C is folded from the first folding axis to the third folding axis. Figure 125A is a front view illustrating one embodiment of the bag according to the 33rd embodiment. Figure 125B is a partial perspective view illustrating the main part of the bag according to the 33rd embodiment. Figure 125C is a diagram illustrating one embodiment of the 33rd embodiment in which the bag is suspended from a suspension support.Figure 126A is a front view illustrating an embodiment of the bag according to the 33rd embodiment. Figure 126B is a side view illustrating an embodiment of the bag according to the 33rd embodiment. Figures 127A to 127C are partial front views illustrating the main parts of an embodiment of the bag according to the 33rd embodiment. Figure 128A is a front view illustrating an embodiment of the bag according to the 33rd embodiment. Figure 128B is a plan view illustrating an embodiment of the bag according to the 33rd embodiment.Figure 129 is a perspective view illustrating an embodiment of the bag according to the 21st embodiment. Figures 130A to 130C are diagrams illustrating an embodiment of the bag according to the 35th embodiment. Figures 131A to 131C are diagrams illustrating an embodiment of the bag according to the 35th embodiment. Figures 132A to 132C are diagrams illustrating an embodiment of the bag according to the 35th embodiment. Figures 133A to 133C are oblique views illustrating an embodiment of the bag according to the 36th embodiment. Figure 134 is a perspective view illustrating an embodiment of the bag according to the 36th embodiment. Figure 135 is a perspective view illustrating an embodiment of the bag according to the 36th embodiment. Figures 136A to 136C are perspective views illustrating an embodiment of the bag according to the 37th embodiment. Figure 137 is a perspective view illustrating an embodiment of the bag according to the 37th embodiment. Figures 138A to 138C are perspective views illustrating an embodiment of the bag according to the 37th embodiment. Figures 139A and 139B are perspective views illustrating an embodiment of the bag according to the 37th embodiment. Figure 140 is a perspective view illustrating an embodiment of the bag according to the 37th embodiment. Figures 141A and 141B are diagrams illustrating an embodiment of the bag according to the 38th embodiment. Figure 142 is a perspective view illustrating an embodiment of the bag according to the 38th embodiment. Figures 143A to 143C are diagrams illustrating an embodiment of the bag according to the 39th embodiment. Figure 144 is a diagram illustrating an embodiment of the bag according to the 39th embodiment. Figures 145A to 145C are diagrams illustrating an embodiment of the bag according to the 39th embodiment. Figure 146 is a perspective view illustrating an embodiment of the bag according to the 39th embodiment. Figures 147A to 147D are diagrams illustrating an embodiment of the bag according to the 40th embodiment. Figure 148 is a perspective view illustrating an embodiment of the bag according to the 41st embodiment. Figure 149A is a partial cross-sectional view schematically illustrating the handle portion in a modified example of the bag according to the 21st embodiment. Figure 149B is a partial cross-sectional view schematically illustrating the handle portion in a modified example of the bag according to the 21st embodiment.Figure 149C is a side view illustrating an embodiment of the bag according to the 21st embodiment. Figure 150A is a perspective view illustrating an embodiment of the bag according to the 42nd embodiment. Figure 150B is a side view illustrating an embodiment of the bag according to the 42nd embodiment. Figure 150C is a top view illustrating an embodiment of the bag according to the 42nd embodiment. Figure 151A is a perspective view illustrating an embodiment of the bag according to the 42nd embodiment. Figure 151B is a top view illustrating an embodiment of the opening of the bag according to the 42nd embodiment. Figure 151C is a perspective view illustrating an embodiment of the bag according to the 42nd embodiment. Figure 152A is a perspective view illustrating an embodiment of the bag according to the 43rd embodiment. Figure 152B is a side view illustrating an embodiment of the bag according to the 43rd embodiment. Figure 152C is a top view illustrating an embodiment of the bag according to the 43rd embodiment. Figure 153A is a perspective view illustrating an embodiment of the bag according to the 43rd embodiment. Figure 153B is a plan view illustrating an example of the opening of the bag according to the 43rd embodiment. Figure 153C is a perspective view illustrating an example of the bag according to the 43rd embodiment. Figure 154A is a perspective view illustrating an example of the bag according to the 42nd embodiment. Figure 154C is a perspective view illustrating an example of the bag according to the 42nd embodiment. Figure 155A is a perspective view illustrating an example of the bag according to the 42nd embodiment. Figure 155B is a side view illustrating an example of the area near the upper end of the peripheral wall of the bag according to the 42nd embodiment. Figure 155C is a perspective view illustrating an example of the bag according to the 42nd embodiment. Figure 156A is a perspective view illustrating an example of the bag according to the 45th embodiment. Figure 156B is a side view illustrating an example of the bag according to the 45th embodiment. Figure 156C is a plan view illustrating an example of the bag according to the 45th embodiment. Figure 157A is a perspective view illustrating an example of the bag according to the 45th embodiment. Figure 157B is a perspective view illustrating an embodiment of the bag according to the 45th embodiment. Figure 158A is a perspective view illustrating an embodiment of the bag according to the 45th embodiment.Figure 158B is a side view illustrating an embodiment of the bag according to the 45th embodiment. Figure 158C is a top view illustrating an embodiment of the bag according to the 45th embodiment. Figure 159A is a perspective view illustrating an embodiment of the bag according to the 45th embodiment. Figure 159B is a rear view illustrating an embodiment of the area near the upper end of the peripheral wall of the bag according to the 45th embodiment. Figure 160A is a perspective view illustrating an embodiment of the bag according to the 45th embodiment. Figure 160B is a perspective view illustrating an embodiment of the bag according to the 45th embodiment. Figure 161A is a perspective view illustrating an embodiment of the bag according to the 45th embodiment. Figure 161B is a top view illustrating an embodiment of the bag according to the 45th embodiment. Figure 162A is a perspective view illustrating an embodiment of the bag according to the 45th embodiment. Figure 162B is a top view illustrating an embodiment of the opening of the bag according to the 45th embodiment. Figure 162C is a rear view illustrating an embodiment of the area near the upper end of the peripheral wall of the bag according to the 45th embodiment. Figure 163A is a partial perspective view illustrating an embodiment of the bag according to the 45th embodiment. Figure 163B is a partial cross-sectional view showing the longitudinal section along line K1-K1 in Figure 163A. Figure 163C is a partial cross-sectional view illustrating an embodiment of the bag according to the 45th embodiment. Figure 162D is a front view illustrating an embodiment near the upper end of the peripheral wall portion of the bag according to the 45th embodiment. Figure 164A is a perspective view illustrating an embodiment of the bag according to the 45th embodiment. Figure 164B is a partial perspective view illustrating an embodiment of the bag according to the 45th embodiment. Figure 164C is a partial cross-sectional view showing the longitudinal section along line K1-K1 in Figure 163A. Figures 165A, 165B, and 165C are partial cross-sectional views illustrating an embodiment of the bag according to the 45th embodiment. Figures 166A, 166B, 166C, 166D, 166E, and 166F are diagrams illustrating an embodiment of the weakened portion of the bag according to the 45th embodiment. Figures 167A and 167B are perspective views illustrating an embodiment of the bag according to the 46th embodiment. Figure 168 is a perspective view illustrating an embodiment of the bag according to the 46th embodiment.Figure 169A is a perspective view illustrating an embodiment of the bag according to the 44th embodiment. Figure 169B is a side view illustrating an embodiment of the bag according to the 44th embodiment. Figure 170A is a perspective view illustrating an embodiment of the bag according to the 44th embodiment. Figure 171 is a perspective view illustrating an embodiment of the bag according to the 47th embodiment. Figure 172 is a perspective view illustrating an embodiment of the bag according to the 47th embodiment. Figure 173 is a perspective view illustrating an embodiment of the bag according to the 47th embodiment. Figure 174 is a perspective view illustrating an embodiment of the bag according to the 47th embodiment. Figure 175 is a perspective view illustrating an embodiment of the bag according to the 47th embodiment. Figure 176 is a perspective view illustrating an embodiment of the bag according to the 47th embodiment. Figures 177A and 177B are plan views illustrating an embodiment of the position regulating member. Figures 178A to 178D are partial side views illustrating an embodiment of the bag according to the 43rd embodiment. Figure 179A is a perspective view illustrating an embodiment of the bag according to the 48th embodiment. Figure 179B is a side view illustrating an embodiment of the bag according to the 48th embodiment. Figure 179C is a top view illustrating an embodiment of the bag according to the 48th embodiment. Figure 180A is a perspective view illustrating an embodiment of the bag according to the 48th embodiment. Figure 180B is a perspective view illustrating an embodiment of the bag according to the 48th embodiment. Figure 181A is a perspective view illustrating an embodiment of the bag according to the 48th embodiment. Figure 181B is a side view illustrating an embodiment of the bag according to the 48th embodiment. Figure 181C is a top view illustrating an embodiment of the bag according to the 48th embodiment. Figure 182A is a perspective view illustrating an embodiment of the bag according to the 48th embodiment. Figure 182B is a side view illustrating an embodiment of the bag according to the 48th embodiment. Figure 182C is a top view illustrating an embodiment of the bag according to the 48th embodiment. Figure 183A is a perspective view illustrating an embodiment of the bag according to the 48th embodiment. Figure 183B is a side view illustrating one embodiment of the bag according to the 48th embodiment.Figure 183C is a plan view illustrating an embodiment of the bag according to the 48th embodiment. Figure 184A is a perspective view illustrating an embodiment of the bag according to the 48th embodiment. Figure 184B is a side view illustrating an embodiment of the bag according to the 48th embodiment. Figure 184C is a plan view illustrating an embodiment of the bag according to the 48th embodiment. Figure 185A is a perspective view illustrating an embodiment of the bag according to the 48th embodiment. Figure 185B is a side view illustrating an embodiment of the bag according to the 48th embodiment. Figure 185C is a plan view illustrating an embodiment of the bag according to the 48th embodiment. Figure 186 is a perspective view illustrating an embodiment of the bag according to the 49th embodiment. Figure 187 is a perspective view illustrating an embodiment of the bag according to the 49th embodiment. Figure 188 is a perspective view illustrating an embodiment of the bag according to the 49th embodiment. Figure 189 is a perspective view illustrating an embodiment of the bag according to the 49th embodiment. Figure 190 is an external perspective view of the bag according to the first embodiment. Figure 191 is a cross-sectional perspective view of a bag according to the first embodiment. Figure 192 is a cross-sectional perspective view of a bag according to the first embodiment. Figure 193 is a cross-sectional perspective view of a bag according to the first embodiment. Figure 194 is an explanatory diagram illustrating the arrangement of position regulating members within the bag. Figure 195 is an explanatory diagram illustrating the arrangement of position regulating members within the bag. Figure 196 is an explanatory diagram illustrating a bag according to the 50th embodiment. Figure 197 is an explanatory diagram illustrating a bag according to the 50th embodiment. Figure 198 is an explanatory diagram illustrating a bag according to the 51st embodiment. Figure 199 is a cross-sectional perspective view of a bag according to the 52nd embodiment. Figure 200 is a cross-sectional perspective view of a bag according to the 52nd embodiment. Figure 201 is a cross-sectional perspective view of a bag according to the 52nd embodiment. Figure 202 is a cross-sectional perspective view of a bag according to the 52nd embodiment. Figure 203 is a cross-sectional perspective view of a bag according to the 53rd embodiment. Figure 204 is a cross-sectional perspective view of a bag according to the 53rd embodiment. Figure 205 is a cross-sectional perspective view of a bag according to the 53rd embodiment. Figure 206 is a cross-sectional perspective view of a bag according to the 53rd embodiment.Figure 207 is a cross-sectional perspective view of the bag according to the 53rd embodiment. Figure 208 is a cross-sectional perspective view of the bag according to the 53rd embodiment. Figure 209 is a cross-sectional perspective view of the bag according to the 53rd embodiment.

[0011] The present invention will be described with an example of a bag used to contain food and beverages. However, the use of the bag is not limited to storing food and beverages, and it can also be used as a bag that can contain items other than food and beverages. The types of food and beverages that can be stored in the bag according to the present invention are not limited and include various forms of food and beverages, such as beverages contained in cups, such as coffee and carbonated drinks, foods contained in containers of a predetermined size and shape, such as potatoes, and foods wrapped in paper, such as hamburgers.

[0012] "Contents" are defined as items stored within a bag. For example, contents may include containers such as cups holding beverages, containers of a predetermined size and shape holding food, and boxes or other containers placed to cover these containers.

[0013] In this specification and drawings, components having substantially the same characteristics even if the embodiments differ will be indicated by the same reference numerals, and detailed descriptions of such components will be 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, for the sake of convenience of explanation, directions such as front / back, left / right, up / down, and the direction of the horizontal plane are indicated, but the content of the present invention is not limited to these directions. In the examples of Figures 1 to 189, the Z-axis direction is assumed to be the up / down direction (upper side is the +Z direction, lower side is the -Z direction), the directions along the mutually orthogonal X and Y axes defined on a plane normalized to the Z-axis direction are assumed to be the X-axis direction and the Y-axis direction, and the XY plane, which is the plane drawn between the X and Y axes, is assumed to be the horizontal plane, and the explanation will be based on these assumptions. In addition, the relative size ratios of the sizes etc. shown in Figures 1 to 82 are for convenience only and do not limit the actual size ratios.

[0015] [1 First Embodiment] [1-1 Configuration] As shown in Figure 1, etc., and in Figures 190 to 194, etc., the bag body 10 according to the first embodiment has a main body 20.

[0016] (Main body) The main body 20 comprises a peripheral wall portion 21, a bottom portion 22, a space portion 23, and an opening 24. The peripheral wall portion 21 is a wall portion that connects to the bottom portion 22 at its periphery. The space portion 23 is also called the storage space and is a space surrounded by the peripheral wall portion 21 that connects to the bottom portion 22 at its periphery. The space portion 23 is formed so that a container (container 200 in Figures 2, 3, etc.) as contents can be stored. The opening 24 is formed so that the container 200 (contents) can be inserted into the storage space (space portion 23).

[0017] (Material of the main body) The material of the main body 20 is not particularly limited, and examples include paper-based materials, woven fabrics, nonwoven fabrics, resins, metals, etc. The nonwoven fabrics that can be used as the material of the main body 20 are not particularly limited. Nonwoven fabric refers to a material defined as a nonwoven fabric in JIS L0222, in which "fibers are oriented in one direction or randomly, and the fibers are bonded together by entanglement and / or fusion and / or adhesion. However, this excludes paper, woven fabrics, knitted fabrics, tufts and felted fabrics." Examples of nonwoven fabrics include spunbond nonwoven fabrics, chemical bond nonwoven fabrics, airlaid nonwoven fabrics, needle-punched nonwoven fabrics, spunlace nonwoven fabrics, thermal bond nonwoven fabrics, resin bond nonwoven fabrics, nanofiber nonwoven fabrics, and also meltblown nonwoven fabrics. As for the nonwoven fabric, one in which pulp fibers are the main component of the fibers is preferred, but it is not limited to this, and one made mainly of non-pulp fibers such as synthetic fibers may be used. With respect to the nonwoven fabric sheet, "one in which pulp fibers are the main component of the fibers" means that it contains 50% by mass or more of pulp fibers, preferably 70% by mass or more, and more preferably 80% by mass or more. Examples of non-pulp fibers include natural fibers such as wool, silk, and cotton; polyester such as nylon, vinylon, and polyethylene terephthalate; synthetic fibers such as polyacrylic, polyolefins such as polyethylene and polypropylene; polyurethane; regenerated fibers such as rayon; and semi-synthetic fibers such as acetate, but synthetic fibers are preferably used. The resin that can be used as the material for the main body 20 is not particularly limited, and polyolefin resins such as polyethylene or polyethylene terephthalate resin may be used as appropriate. A preferred resin to be selected from the various resins described above is a biodegradable resin that does not cause environmental pollution.Examples of biodegradable resins include microbially produced biodegradable resins such as polyhydroxyalkanoates (PHA) and PHA copolymers; natural product biodegradable resins such as cellulose derivatives like cellulose acetate and starch-based resins mainly made from starch like 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 materials 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 viewpoint of moisture absorption and reduction of environmental impact, it is preferable that it be formed from a paper-based material containing fibers. In the examples shown in Figures 1A to 1C, the main body 20 is formed from a paper-based material. Examples of paper-based materials include so-called papers manufactured by bonding plant fibers and other fibers, as well as chemical fiber paper, synthetic paper, water-resistant paper, coated paper, alternative paper, parchment, wool paper, glass fiber paper, stone paper, ceramic paper, etc. The paper-based material may be recycled paper or non-recycled paper. Note that as long as the main body 20 contains a paper-based material, there is no prohibition against using non-paper-based materials in combination. Examples of non-paper-based materials include cloth-type materials (woven fabrics and non-woven fabrics), resins, metals, etc. Examples of non-woven fabrics include so-called airlaid sheets formed into a sheet by bonding crushed pulp that has been filled with fibers by an airflow, pulp-based materials, and nonwoven fabrics of fibers such as natural fibers and synthetic fibers. It is also possible to use a combination of paper-based and non-paper-based materials for the main body 20. Examples of resin materials that can be used as non-paper-based materials include resins composed of synthetic resins, natural resins, etc. An example of combining paper-based and resin-based materials is when the main body 20 has a structure in which a resin sheet is laminated on at least one surface of the paper-based material. When using metal as the non-paper-based material, examples include metal sheets and metal nets (metal net-like structural members). Examples of metal sheets include aluminum foil. An example of combining paper-based materials and metal is when the main body 20 has a structure in which a metal sheet or metal net is laminated on at least one surface of the paper-based material. When combining non-paper-based materials such as resin materials or metal materials with paper-based materials as in these examples, the lamination may be applied to only one surface of the paper-based material, or it may be applied to both one and the other surface of the paper-based material. However, as mentioned above, from the viewpoint of reducing environmental impact, it is preferable that the main body 20 is composed only of paper-based materials, omitting the resin sheet.

[0019] When the main body 20 is composed of a sheet having a paper-based material, it is preferable that the sheet having a paper-based material forming the main body 20 is waterproof. In the manufacturing process of such a sheet having a paper-based material (for example, specifically when a papermaking process is carried out using raw material fibers (pulp fibers, etc.)), predetermined amounts of various additives such as lubrication strength enhancers, sizing agents (e.g., alkyl ketene dimer (AKD), etc.), and cationized starch are added to the raw material fibers of the sheet. In addition to lubrication strength enhancers and sizing agents, calcium carbonate may also be used as an additive. In this case, various additives such as lubrication strength enhancers, sizing agents, cationized starch, and calcium carbonate may be added to the raw material fibers of the sheet. At this time, the amount of these additives should be such that it is possible to enhance the waterproofness. This makes it possible to obtain a sheet having a paper-based material with enhanced waterproofness. The additives shown above are just examples, and other additives may be added, or they may be replaced with other substances that have functions equivalent to those of the additives shown above.

[0020] If 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 on which a layer for enhancing waterproofness has been formed by a coating method or the like.

[0021] Furthermore, the main body 20 may be made of paper. The paper that can be used to form the main body 20 is not limited; it may be a paper-based material using bleached pulp fibers, or it may be 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 according to the present invention include so-called paper obtained by forming a sheet from a slurry of fiber raw materials on a mesh, drying or press-drying it, and then papermaking it, so-called airlaid sheets obtained by stacking open fiber raw materials such as pulp obtained by crushing a raw material sheet made of pulp fibers in a crusher, and fixing the fibers of the stacked fiber body with a binder, and laminates of multiple such sheets. As paper-based materials, in addition to those made only of pulp, they may also contain non-pulp-based natural fibers, synthetic fibers, regenerated fibers, etc., but it is preferable that they contain 50% by mass or more of pulp, more preferably 70% by mass or more, and even more preferably 80% by mass or more, but it is especially preferable that they consist of 100% by mass of pulp. Paper-based materials can include composite materials with synthetic resins, natural resin films and nonwoven fabrics, wood-based materials such as wood foil, and even aluminum foil. However, when using composite materials, it is preferable that the composite material as a whole contains 50% by mass or more pulp, and particularly preferable that it contains 80% by mass or more pulp. A higher pulp content is preferable because it makes the paper-based material more biodegradable.

[0023] Here, examples of pulp include wood pulp, non-wood pulp, synthetic pulp, and recycled paper pulp. More specifically, mechanical pulp (MP) such as crushed wood pulp (GP), stone ground pulp (SGP), refiner ground pulp (RGP), pressurized crushed wood pulp (PGW), thermomechanical pulp (TMP), chemothermetic pulp (CTMP), bleached chemothermetic pulp (BCTMP), chemical mechanical pulp (CGP), semi-chemical pulp (SCP), bleached hardwood kraft pulp (LBKP), and bleached softwood kraft pulp. One or more types can be appropriately selected and used from kraft pulp (KP) such as topulp (NBKP), chemical pulp (CP) such as soda pulp (AP), sulfite pulp (SP), dissolved pulp (DP), synthetic pulp with reduced weight of nylon, rayon, polyester, polyvinyl alcohol (PVA), etc., pulp (TP), rag pulp with reduced weight of cotton, flax, hemp, jute, Manila hemp, ramie, etc., straw pulp, esparto pulp, bagasse pulp, bamboo pulp, kenaf pulp, etc., and auxiliary pulp such as bast pulp. The pulp can be made from various materials, including coniferous pulp such as Japanese red pine, fir, Yezo spruce, Douglas fir, hemlock, and spruce; hardwood pulp such as beech, oak, birch, eucalyptus, poplar, and alder; wood pulp such as mixtures of coniferous and hardwood pulp; non-wood pulp such as kenaf bagasse pulp, bamboo pulp, cereal pulp, straw pulp, abaca pulp, and cotton pulp; and recycled paper pulp. Because coniferous pulp has longer fibers than hardwood pulp, paper materials made using pulp with longer fibers, such as coniferous pulp, have a higher degree of fiber entanglement. Similarly, crushed pulp obtained by crushing raw material sheets made from coniferous pulp also has longer fibers than crushed pulp obtained by crushing raw material sheets made from hardwood pulp, resulting in improved strength of the paper-based material due to increased fiber entanglement.

[0024] Furthermore, as the paper material, a paper material having a resin coating layer on at least one side may be used. When using a paper material with a coating layer, it is preferable to use it so that the coating layer is located 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 laminating a resin film, the film may be a single-layer film or a multi-layer film, and single-layer or multi-layer films may be layered together. In addition, the coating agent may not only be applied by coating with one type, but two or more types of coating agents may be layered together to form the coating layer.

[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; starch-based resins such as polycaprolactone, polyhydroxyalkanoate, polyhydroxybutyrate, polylactic acid, and 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), and poly Naturally biodegradable resins and mixtures of naturally biodegradable resins such as (butylene succinate / carbonate), poly(ethylene terephthalate / succinate), poly(butylene adipate / terephthalate), and poly(tetramethylene adipate / terephthalate); naturally biodegradable biomass resins and mixtures of naturally biodegradable biomass resins; fluororesins, silicone resins, UV-curing resins, and copolymers of monomers constituting the above resins, such as ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, ethylene-propylene copolymer, ethylene-propylene-butadiene copolymer, acrylic-styrene copolymer, styrene-butadiene copolymer, and acrylonitrile-butadiene-styrene copolymer, as well as natural resins, paraffin, gelatin, cellophane, and polymethylpentene can be used. The coating layer is preferably formed from naturally biodegradable resins, naturally biodegradable biomass resins, and other naturally biodegradable resins.

[0026] Examples of naturally biodegradable resins include natural resins, naturally biodegradable plastics, and biomass plastics. Examples of naturally biodegradable plastics and biomass plastics include starch-based resins such as polycaprolactone, polyhydroxyalkanoates, polyhydroxybutyrate, polylactic acid, and esterified starch, as well as naturally biodegradable resins and mixtures of naturally biodegradable resins such as 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] Furthermore, naturally biodegradable resins may also contain additives listed on the Japan Bioplastics Association's positive list, such as lubricants like stearic acid amide, fatty acid esters, fatty acid metal salts, fatty acids, oils and fats, and glycerin fatty acid esters; stabilizers like triphenyl phosphate, phthalic anhydride, tris-dibutyl phosphate, and acetic anhydride; inorganic materials like titanium dioxide, kaolin, mica, bentonite, diatomaceous earth, magnesium oxide, silica sand, aluminum, calcium carbonate, calcium hydroxide, and seashell powder; surfactants like higher fatty acid amides, nonionic surfactants, and glycerin fatty acid esters; foaming agents like citric acid, sodium bicarbonate, and butane; and other materials such as antistatic agents and hot-melt adhesives.

[0028] Furthermore, "naturally biodegradable" refers to the property of being decomposed by microorganisms, ultraviolet rays, climate changes, etc., in the air, soil, or water, thereby reducing the environmental burden. When the main body 20 is formed of a resin material, examples of resin materials 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 10 is preferably made up of one or more materials selected from olefin resins, biomass resins, and biodegradable resins. As an unstretched olefin resin, for example, a propylene resin can be used. Examples of propylene resins include propylene homopolymers, propylene-α-olefin random copolymers, and propylene-α-olefin block copolymers. Furthermore, polyethylene-based 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); and ethylene-based 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 also ionomers of ethylene-acrylic acid copolymer and ionomers of ethylene-methacrylic acid copolymer. These can be used individually or mixed in combination of two or more types.

[0030] Examples of biomass resins include plant-derived biomass polyethylene. Plant-derived biomass polyethylene is a polyethylene resin produced from plant-derived ethylene, such as sugarcane, corn, and beets, which are used as starting materials. Examples of this 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 can be used individually or in mixtures of multiple types. In addition to these, biomass polypropylene and biomass polyethylene made from tall oil, a by-product obtained during pulp production, and waste cooking oil can also be used.

[0031] Examples of biodegradable resins include polyethylene succinate (PES), polybutylene succinate (PBS), polylactic acid (PLA), polyglycolic acid (PGA), polyhydroxybutyrate (PHB), polycaprolactone (PCL), mixtures or copolymers of polycaprolactone and polybutylene succinate (PCL / PBS), copolymers of polyhydroxybutyrate and polyhydroxyvalate (PHB / PHV), mixtures or copolymers of polybutylene succinate and polybutylene adipate (PBS / PBA), copolymers of polyethylene terephthalate and polyethylene succinate (PET / PES), and copolymers of polybutylene terephthalate and polybutylene adipate (PBT / PBA). These resin materials may be used individually or in combination of multiple types as desired.

[0032] (Peripheral wall portion) The peripheral wall portion 21 rises from the periphery of the bottom portion 22. The peripheral wall portion 21 also connects to the bottom portion 22 at its periphery. In the example shown in Figure 1, 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 the space enclosed by the bottom portion 22 and the peripheral wall portion 21, which will be described later, forms the space portion 23. "The peripheral wall portion that connects to the bottom portion at its periphery" 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. When the peripheral wall portion 21 is continuous with the periphery of the bottom portion 22, this includes both cases where the bottom portion 22 and the peripheral wall portion 21 are made by bending a single blank material (where the peripheral wall portion 21 is formed continuously with the periphery of the bottom portion 22), and cases where the bottom portion 22 and the peripheral wall portion 21 are made by joining different blank materials. In other words, "a peripheral wall portion continuous with the periphery of the bottom" indicates that the bottom portion 22 and the peripheral wall portion 21 form a connected structure.

[0033] In the example shown in Figure 1, the peripheral wall portion 21 has a pair of opposing wall portions 25 (main wall portions) and a pair of opposing side wall portions 26. In the peripheral wall portion 21, each wall portion 25, 25 is connected to the side wall portions 26, 26 at the side edges of the wall portion 25. The main body 20 has a pair of side wall portions 25. This pair of side wall portions 25 are the first wall portion 25A and the second wall portion 25B, respectively.

[0034] (Bottom) The bottom portion 22 forms the bottom surface of the main body 20. The structure of the bottom portion 22 is not particularly limited as long as it is a structure that can prevent the contents stored in the space portion 23 from falling out downwards. In the example of Figure 1, the bottom portion 22 is configured as a part having a folding structure 27 formed by folding the portion of the blank material 500 corresponding to the bottom portion 22 (bottom corresponding portion 501), as shown in Figures 5A to 5C. Figure 5A is a diagram illustrating the folding of the blank material 500 when forming the folding structure 27. Also, the examples in Figures 5B and 5C are examples of the bottom portion 22 and do not limit the structure of the bottom portion 22. The bottom portion 22 may be formed in a planar shape, may have a fine uneven structure (embossed structure, etc.), or may have a structure with a gusset.

[0035] (Corner) The main body 20 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 Figure 1, the corner 28 is formed 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) The main body gusset 29 is preferably formed so that the distance between the first wall portion 25A and the second wall portion 25B can be changed. In this case, when the bag 10 is not in use, the shape of the main body gusset 29 can be such that the distance between the first wall portion 25A and the second wall portion 25B is small (referred to as the reduced state). When the bag 10 is in use, the shape of the main body gusset 29 can be such that the distance between the first wall portion 25A and the second wall portion 25B is large (referred to as the widened state). In this way, the bag 10 can be widened and narrowed as needed, so that it can be stored in a narrow space when not in use, and a space 23 for storing contents can be secured when in use.

[0037] (Position Restricting Member) The main body 20 is provided with a position restricting member 30. There may be one position restricting member 30, or there may be multiple members as shown in Figure 6A. In the example in Figure 6A, there are two position restricting members 30, and each can independently change the state of the restricting wall portion 31 between a first shape state ST1 and a second shape state ST2 (movement of the movable part of the restricting wall portion 31 in the direction of arrow T). In Figure 6, for the sake of explanation, the thickness of each member and the main body gusset portion 29 are omitted. This is also the case for Figures 4 and 7. An example of providing a position restricting member 30 is shown in Figure 194. For example, Figure 194(a) shows a configuration in which position restricting members 30 are provided at all four corner portions 20 of the main body 20. Furthermore, Figure 194(b) shows an embodiment in which position regulating members 30 are provided at three corners 28, Figures 194(c) to (e) show an embodiment in which position regulating members 30 are provided at two corners 28, and Figure 194(f) shows an embodiment in which position regulating members 30 are provided at one corner 28. Thus, the number of position regulating members 30 and the locations where they are provided are not limited. Also, for example, if the bag body 10 has a shape with fewer than four corners 28 or more than four corners 28, the number of position regulating members 30 may be arbitrarily provided in accordance with the number of corners. In addition, as shown in Figure 195, in an embodiment in which position regulating members 30 are provided on the main body 20, one joining portion 32 of the position regulating member 30 may be connected to the wall portion 25, and the other joining portion 32 may be connected to the side wall portion 26. Furthermore, the other joining portion 32 may be configured to connect to the side wall portion 26 at a position further away from the wall portion 25 to which one joining portion 32 is connected than the fold 29a of the main body gusset portion 29. When the position regulating member 30 configured in this way forms the first shape state ST1, the small space portion 33 formed between the peripheral wall portion 21 and the position regulating member 30 can be widened, and a container with a large diameter can be easily accommodated. When the position regulating member 30 is formed in this way, the side wall portion 26 that constitutes the small space portion 33 includes the fold 29a.

[0038] The position regulating member 30 is a strip-shaped member joined to at least the inner surface of the peripheral wall portion 21. In the examples shown in Figures 1 and 2, the position regulating member 30 has a joining allowance portion 32 formed at the side end of the regulating wall portion 31 (described later) which is joined to the peripheral wall portion 21, and is joined to the inner surface of the peripheral wall portion 21 by the joining allowance portion 32. The regulating wall portion 31 has a first surface 31a and a second surface 31b, and the joining allowance portion 32 is formed at the end of the first surface 31a. The examples in Figures 1 and 2 are just examples, and the formation of the joining allowance portion 32 may be avoided. For example, as shown in Figure 11B, the position regulating member 30 may be formed in a shape in which the intervening wall 50 (described later in the second embodiment) and the regulating wall portion 31 are connected in an annular manner, and the intervening wall 50 may be joined to the inner surface of the peripheral wall portion 21. Furthermore, as shown in Figures 1 and 2, when the peripheral wall portion 21 has a wall surface portion 25 and a side wall surface portion 26, it is preferable that the position regulating member 30 is 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 position between the wall surface portion 25 and the side wall surface portion 26, the position regulating member 30 is configured to cover at least a part of the corner portion 28 when the regulating wall portion 31 is in the second shape state ST2. This makes it difficult to change the state of the regulating wall portion 31 of the position regulating member 30 from the second shape state ST2 to the first shape state ST1, as shown in Figure 2A, and then back to the second shape state ST2. The portion of the regulating wall portion 31 that is joined to other members or parts, such as the joining allowance portion 32, is referred to as the fixed portion, and the portion of the regulating wall portion 31 excluding the fixed portion is referred to as the movable portion. The movable part can move between a position close to the fixed part (first position) and a position a predetermined distance away from the fixed part (second position). The further the movable part moves from the fixed part to the second position, the easier it becomes to form the first shape, and a small space 33, described later, can be formed that is large enough to accommodate a container (such as a paper cup or potato container).

[0039] (Restrictive wall portion) The position restricting member 30 has a restrictive wall portion 31. The restrictive wall portion 31 restricts the movement of contents within the space portion 23 (more preferably the horizontal movement of contents in the small space portion 33).

[0040] In the position regulating member 30, the regulating wall portion 31 is configured to be able to form at least a first shape state ST1 in which the facing surface 34 forms a concave surface, and a second shape state ST2 which is different from the first shape state. However, the facing surface 34 is defined as follows. That is, when the contents (container 200 in Figures 2B, 3B, etc.) are placed in the space portion 23 so as to restrict the movement of the regulating wall portion 31, the surface of the regulating wall portion 31 that faces the contents is referred to as the facing surface 34. When the contents are placed in the space portion so as to restrict the movement of the regulating wall portion, it means that when the bag body 10 is placed with the bottom surface facing downwards and the opening facing upwards, the horizontal movement of the contents placed in the space portion is restricted. The state in which movement is restricted by the regulating wall portion is achieved when the regulating wall portion forms the second shape state ST2 when the contents are placed in the space portion.

[0041] The size of the regulating wall may be determined according to the size of the contents. For example, if the contents are a container 200 having a container body into which a beverage has been poured, the size of the regulating wall 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 is formed to the vicinity of the upper end of the container body. By forming it in this way, for example, when a container containing a beverage is held in the small space portion 33, it becomes easy to form a state in which the restricting wall portion 31 is in contact with most of the outer surface of the container, so that the restricting wall portion 31 can also function as a sleeve, making it easier to obtain an insulating effect, improving the heat retention or cold retention of the container, and making it possible to maintain the temperature of the beverage inside the container at a good temperature for a long time. When the container 200 is placed in the small space portion 33, in the example shown in Figure 3B, the container 200 is configured so that the container body 210 faces the restricting wall portion 31 directly. This is just one example, and as shown in Figure 52A, a sleeve 41 may be fitted to the outer surface of the container body 210 of the container 200, and when the container 200 is stored in the bag 10, the container 200 with the sleeve 41 provided as shown in Figure 52B may be placed in the small space portion 33. By housing the container 200 in this manner, the heat retention or cold retention of the container is further improved, making it possible to maintain the temperature of the beverage inside the container at a good temperature for a longer period of time. Note that the sleeve 41 shown in Figure 52A is formed in a cylindrical shape that matches the shape of the outer surface 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 corner and regulating wall) Furthermore, as shown in the example in Figure 1A, when the main body 20 has a corner 28, it is preferable that the position regulating member 30 covers at least a part of at least one of the corners 28 when the regulating wall 31 is in the second shape state ST2. In this case, a small space 33 can be formed at a position including the corner of the main body. In this case, a large small space 33 can be secured when the movable part moves from the first position to the second position, surrounded by the fixed part and the movable part, making it possible to create a state that can easily hold relatively large contents.

[0044] (First shape state and second shape state) Regarding the state of the regulating wall portion 31, the first shape state ST1 is not particularly limited as long as it is a state in which the opposing surface 34 forms a concave surface. However, in the example of FIG. 2A, the concave surface is a V-shaped surface (V-shaped in cross-section). The example in FIG. 2A is an illustrative example, and the concave surface may alternatively be a U-shaped surface. The first shape state ST1, which is the state in which the opposing surface 34 forms a concave surface, shall include not only the case where the entire opposing surface 34 is a concave surface, but also the case where a part of the opposing surface 34 is a concave surface. However, from the viewpoint of securing a sufficiently large size for the small space portion 33, it is preferable that in the first shape state ST1, substantially the entire opposing surface 34 (the region of the opposing surface 34 corresponding to the above-described movable portion) is a concave surface. Whether the opposing surface 34 is in a state of forming a concave surface can be determined by selecting two different points on the opposing surface 34, taking a straight line passing through these two points as a reference (reference straight line), and specifying whether the opposing surface 34 exists on the side farther from the peripheral wall portion 21 than the reference straight line in a plan view of the bag body 10. When there is at least one such reference straight line where the opposing surface 34 exists on the side farther from the peripheral wall portion 21 than the reference straight line, it can be determined that the "portion of the opposing surface 34 located on the side farther from the peripheral wall portion 21" forms a concave surface.

[0045] The second shape state ST2 of the regulating wall portion 31 is not particularly limited as long as it is different from the first shape state ST1. For example, the second shape state ST2 can be exemplified by 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 in Figure 1A. Note that the example in Figure 1A is just one example, and the convex surface may be the outer surface of a column, a spherical surface, etc. It is preferable that the second shape state ST2 is a state in which the regulating wall portion 31 forms a convex surface on the facing surface so as to be along the inner surface 21A of the peripheral wall portion 21. When the regulating 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 regulating wall portion 31 is a convex shape corresponding to the shape of the inner surface of the corner portion 28. Furthermore, the concept of a second shape state ST2 being different from the first shape state ST1 includes a state in which the facing surfaces 34 are flat.

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

[0047] Preferably, the position regulating member 30 has water absorbency. It is preferable that the position regulating member 30 can suppress leakage of moisture to the outside by virtue of its water absorbency (that is, has water resistance). From this point of view, the position regulating member 30 preferably includes a paper-based material.

[0048] (Positional relationship between content and position regulating member) When the bag body 10 is unused, in the position regulating member 30 provided on the inner surface side of the main body 20 of the bag body 10, the regulating wall portion 31 may be in a second shape state ST2. When the bag body 10 is in use, for example, a user changes the regulating wall portion 31 from the second shape state ST2 to a first shape state ST1 while touching the regulating wall portion 31. Then the content is inserted into the space portion 23 of the bag body 10 such that the content faces the facing surface 34. For example, when the content is a container containing a liquid, the container is inserted downward into the space portion 23 from the opening of the bag body 10 such that the outer peripheral surface of the container body faces the facing surface 34.

[0049] (Small space portion) In the present specification, among the space portion 23 of the bag body, a "space portion surrounded by the main body and the position regulating member" that is "a space portion intended for inserting a container such that the container faces the facing surface when the regulating wall portion is in the first shape state" is referred to as a small space portion 33. Then, the portions forming the small space portion 33 (the portions of the regulating wall portion 31 and the peripheral wall portion 21) can function as a holding portion for limiting movement of the content such as the container and holding the content. Thus, according to the present invention, the portion of the peripheral wall portion 21 can be made to exhibit a function of limiting movement of the content.

[0050] As described above, when a container containing the contents is placed in the space 23, it is preferable that a gap exists between at least a portion of the upper end of the restricting wall 31 and the outer surface of the container. The presence of a gap between at least a portion of the upper end of the restricting wall 31 and the outer surface of the container allows any spilled liquid from the container to collide with the restricting wall 31, making it less likely for the liquid to spill outside the restricting wall 31. Therefore, when items other than containers are stored in the bag, it is possible to suppress the situation in which liquid splashes onto the upper surface of items other than containers.

[0051] (Surface state of the position regulating member) The position regulating member 30 may have a smooth surface without any unevenness processing, or it may have an embossed surface with unevenness processing. Having an uneven surface on the position regulating member 30 makes it easier to obtain a higher heat insulation effect.

[0052] (Blank Material) In the example bag shown in Figure 1A, the main body 20 is formed from a single blank material 500, as shown in Figures 4 and 5. Figures 4 and 5 are diagrams illustrating the manufacturing process of the bag 10. The blank material 500 may be determined according to the shape and manufacturing method of the main body 20, as shown in Figure 4A. For example, if the main body 20 is a sheet having a paper-based material and anti-damping properties, the sheet used to form the blank material 500 may be a sheet obtained by papermaking a raw material fiber containing (or made of) a paper-based material to which various additives (such as wet strength enhancers, AKD, calcium carbonate, or cationized starch) in predetermined amounts have been added. Depending on the application and function, all types of additives may be added to the raw material fiber, or only some types of additives may be added to the raw material fiber. In the example shown in Figure 4, the blank material 500 is composed of a rectangular sheet. When manufacturing the bag body 10, a position regulating member 30 is placed at a predetermined position on the blank material 500, as shown in Figure 4B. As shown in Figure 4C, the rectangular blank material 500 is bent in the direction of arrow F1 at a position corresponding to the corner 28 (position PU in Figure 4), and the adhesive allowance corresponding portion 550 at the side edge of the blank material 500 is bonded. Hereafter, the side edge of the blank material 500 will be referred to as the side edge portion. This is one such case. Furthermore, in the following, the adhesive portion formed by the bonding of the adhesive portion 550 will be referred to as the blank material adhesive portion 551. At this time, a cylindrical structure 530 is formed. The blank material 500 has a peripheral wall portion 502 which corresponds to the peripheral wall portion 21 and a bottom portion 501 which corresponds to the bottom portion 22, and as shown in Figure 5A, the bottom portion 501 of the cylindrical structure 530 which corresponds to the bottom portion 22 is bent inward. Figure 5A In this example, part 501A of the bottom part 501 is folded inward (towards the center of the cylindrical structure (direction of arrow F2)). Furthermore, part 501B is folded inward (towards the center of the cylindrical structure (direction of arrow F2)). At this time, the overlapping parts of part 501A and part 501B, and the overlapping parts of the two parts 501B are bonded together with an adhesive or the like. In this case, a folding structure 27 is formed on the bottom 22. In addition, reinforcing sheet material or the like may be further attached to the bottom 22.Part 501A is the portion of the bottom part 501 that extends below the portion corresponding to the side wall portion 26. Part 501B is the portion of the bottom part 501 that extends below the portion corresponding to the wall portion 25.

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

[0054] [1-2 Function and Effects] According to the bag 10 of the first embodiment, the operation of arranging a cup holder to stabilize the position of the container in addition to the bag 10 can be omitted, and the container can be held easily and stably with a simple operation.

[0055] Furthermore, when the regulating wall portion 31 of the bag 10 is in the second shape state ST2, if the position regulating member 30 is configured to cover at least a part 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, when the movable portion moves from the first position to the second position, a large small space portion 33 can be secured, which is formed when the movable portion is surrounded by the fixed portion and the movable portion, making it possible to create a state in which relatively large contents can be easily held. Regarding containers 200 that contain juice, coffee, etc., it is generally said that the weight of the container 200 is heavier than that of food products such as bread. When such a container 200 is to be contained in the small space portion 33, in conventional bags, the container 200 tends to be pushed towards the center of the bottom of the bag, causing the bottom of the bag to deform and protrude downward, making it easy for the shape of the bag to collapse. In this case, if bread or the like is also contained in the bag in addition to the container 200, there is a problem that the bread and the like are also likely to lose their shape. In light of these issues, 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 above-mentioned problems 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 side of the bottom 22 (Modification 1). When a waterproof layer is provided on the upper side of the bottom as in Modification 1, if a container containing liquid is stored inside the bag 10, even if liquid spills inside the bag 10, it is possible to more reliably prevent the liquid from seeping into the bottom 22 and wetting the lower side of the bottom 22 of the bag 10, or from the bottom 22 tearing and leaking out from the bottom 22. An example of a waterproof layer is a waterproof sheet 37 laid on the upper side of the bottom 22, as shown in Figure 5D. Note that the configuration in which a waterproof layer is provided on the upper side of the bottom 22 may be realized by laying the waterproof sheet 37 on the upper side of the bottom 22 after the main body 20 of the bag 10 has been formed. Alternatively, a waterproof sheet 37 may be laid on the portion of the blank material 500 that is intended to become the bottom portion 22, that is, the portion corresponding to the bottom portion 22, and the blank material 500 on which the waterproof sheet 37 is laid may be folded to form the main body 20, thereby realizing a configuration in which the waterproof sheet 37 is provided on the upper surface side of the bottom portion 22. Alternatively, a configuration in which a waterproof layer is provided on the upper surface side of the bottom portion 22 may be realized by forming a waterproof ink hardened layer by curing a coating film formed by painting waterproof ink on the portion of the blank material 500 corresponding to the bottom portion 22, and then folding the blank material 500 on which the waterproof sheet is laid to form the main body 20.

[0057] (Modification 2) In the bag body 10 according to the first embodiment, when the restricting wall portion 31 is in the second shape state ST2, as shown in Figure 6B, at least one position restricting member 30 may be provided in a position such that the restricting wall portion 31 does not cover the corner portion 28 (Modification 2). With such a position restricting member 30, as shown in Figure 6C, a small space portion 33 of sufficient size can be formed by appropriately combining the shape deformation of the bag body 10 and the shape deformation of the position restricting member 30. However, from the viewpoint of making it difficult for the restricting wall portion 31 to return to the second shape state ST2 after the restricting wall portion 31 has been set to the first shape state ST1 when using the bag body 10, it is preferable that the position restricting member 30 is provided 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] (Modification 3) In the bag body 10 according to the first embodiment, as shown in Figures 7A and 7B, one restricting wall portion 31 may be provided, and the formation positions of the joining allowance portion 32 may be set to multiple locations so that multiple small spaces 33 can be formed. When the member forming the restricting wall portion 31 is arranged to circumfer the inner surface of the peripheral wall portion 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 allowance portion 32 is formed according to the formation position of the small space 33. Except for using the blank material 500 with the joining allowance portion 32 arranged in this way, the bag body 10 can be obtained by folding at a predetermined position as described above.

[0059] (Modification 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 the size corresponding to the size of one container. The size of the small space 33 may be such that multiple containers can be placed there. In the example shown in Figures 7C and 7D, with the position regulating member 30 provided as in Figure 7C, it is possible to place two containers in the small space 33 as shown in Figure 7D.

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

[0061] (Restriction wall weakening section) The restriction wall weakening section 40 may be a half-cut section as shown in Figures 50A and 50B. Alternatively, the restriction wall weakening section 40 may be a perforated section in which through sections and non-through sections are alternately formed along a predetermined direction (not shown). Figure 50A is a diagram showing an example of a position regulating member 30 in the bag body 10, and Figure 50B is a diagram schematically showing the state of the longitudinal section along line D2-D2 in Figure 50A.

[0062] Because the weakened portion 40 of the restrictive wall is formed, when removing the container 200 from the bag body 10 after placing the container 200 in the small space 33, the weakened portion 40 of the restrictive wall is broken, making it easier to remove the container 200.

[0063] (Modification 6) In the bag according to the first embodiment, as shown in Figures 51A and 51B, the position regulating member 30 may have ridged irregularities 42 on the regulating wall portion 31.

[0064] (Striped uneven portion) The striped uneven portion 42 may be formed by embossing as shown in Figures 51A and 51B. Also, although the concave structure 42A and convex structure 42B constituting the striped uneven portion 42 are formed in a shape that extends in the vertical direction, this is just one example. It is not prohibited for the striped uneven portion 42 to have a configuration in which the concave structure 42A and convex structure 42B extend in the horizontal direction. The concave structure 42A and convex structure 42B of the striped uneven portion 42 may extend in the diagonal direction. Figure 51A is a diagram showing an example of a position regulating member 30 in the bag body 10, and Figure 51B is a diagram schematically showing the state of the vertical cross section along line D3-D3 in Figure 51A.

[0065] The formation of the ribbed uneven portion 42 makes it easier to impart flexibility to the restricting wall portion 31, allowing the container 200 to be placed more smoothly in the small space portion 33. Furthermore, when removing the container 200 from the bag 10, the slight stretching of the restricting wall portion 31 makes it easier to remove the container 200.

[0066] [2 Second Embodiment] [2-1 Configuration] The bag body 10 according to the second embodiment, as shown in Figures 8 and 9, has a position regulating member 30 which has a regulating wall portion 31 and an intervening wall 50. The bag body 10 according to the second embodiment has the same configuration as the first embodiment, except that the position regulating member 30 is provided with the intervening wall 50 described above. That is, the bag body 10 according to the second embodiment is the bag body 10 according to the first embodiment which has an intervening wall 50 in the position regulating member 30. Therefore, in the description of the second embodiment, a detailed explanation of the configuration other than the intervening wall 50 of the position regulating member 30 will be omitted.

[0067] (Intervening Wall) As described above, the position regulating member 30 has an intervening wall 50, and in a plan view of the bag body 10 (when the vertical direction is the line of sight), the intervening wall 50 is located between the peripheral wall portion 21 of the main body 10 and the regulating wall portion 31 of the position regulating member 30. The intervening wall 50 is joined to at least the inner surface of the peripheral wall portion 21. More specifically, the intervening wall 50 is attached to the peripheral wall portion 21 in a state where it is in surface contact with the inner surface of the peripheral wall portion 21, thereby bonding the intervening wall 50 and the peripheral wall portion 21. If the portion where the intervening wall 50 and the peripheral wall portion 21 are bonded is called the intervening wall bonding portion 51, it is preferable that the intervening wall bonding portion 51 is partially formed in the region where the intervening wall 50 and the peripheral wall portion 21 face each other. Furthermore, it is preferable that a gap space portion 52 is formed between the intervening wall 50 and the peripheral wall portion 21. Because a gap space 52 is formed, a layer of gas such as air can exist between the intervening wall 50 and the peripheral wall 21, so it is possible to expect improved heat retention in the space formed between the intervening wall 50 and the peripheral wall 21 in the position regulating member 30. In the second embodiment, the space formed between the intervening wall 50 and the peripheral wall 21 in the position regulating member 30 is a small space 33. In the examples of Figures 8, 9A, and 9B, the intervening wall adhesive portion 51 is formed in the shape of multiple strips spaced apart in the vertical direction of the peripheral wall 21. However, the examples in Figures 8 and 9 are just examples of the intervening wall adhesive portion 51. It is not prohibited for the intervening wall adhesive portion 15 to be formed over the entire area where the intervening wall 50 and the peripheral wall 21 face each other. Furthermore, the layout of the intervening wall adhesive portion 51 can also be set as appropriate, as shown in Figures 11A and 11B. For example, in Figure 11A, the layout of the intervening wall adhesive portion 51 is such that it is formed in the shape of multiple strips spaced apart in the vertical direction of the peripheral wall portion 21 shown in Figures 9A and 9B. In Figure 11B, the layout of the intervening wall adhesive portion 51 is such that it is formed in the shape of multiple diagonally intersecting strips, creating a diagonal grid pattern.

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

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

[0070] [2-2 Action and Effects] The bag 10 according to the second embodiment can be used to obtain the same effects as the first embodiment.

[0071] [2-3 Modified Examples] (Modified Example 1) According to the bag body 10 of the second embodiment, the position regulating member 30 is not limited to the case in which the regulating wall portion 31 and the intervening wall 50 are bonded to each other at their side edges, as shown in Figure 11A. As shown in Figure 11B, the position regulating member 30 may be formed by the regulating wall portion 31 and the intervening wall 50 being formed continuously and integrally. In the example of Figure 11B, the position regulating member 30 is formed in an annular shape because the regulating wall portion 31 and the intervening wall 50 are formed continuously and integrally. In Figure 11A, the joining allowance portion 32 of the regulating wall portion 31 is the portion that is joined to the intervening wall 50. When the position regulating member 30 is formed in an annular shape, the bag body 10 can be manufactured as follows. As shown in Figure 48A, the position regulating member 30 is placed at a predetermined position on the blank material 500 for forming the main body 20. The position regulating member 30 is fixed to the blank material 500 by the intervening wall 50. In this case, as shown in Figure 48B, the intervening wall 50 may be fixed to the blank material 500 in a portion of the width direction of the intervening wall 50, and an intervening wall adhesive portion 51 may be formed in a portion of the width direction of the intervening wall 50. Apart from using the blank material 500 with the position regulating member 30 arranged in this manner, the bag body 10 can be obtained by folding it at a predetermined position as described in the first embodiment. When the position regulating member 30 is formed in an annular shape, a method for arranging the position regulating member 30 at a predetermined position on the blank material 500 for forming the main body 20 is to prepare an annular body by winding a sheet for forming the position regulating member 30 in an annular shape and joining the overlapping ends by adhesive or the like, as shown in Figure 53A, and then place the annular body at a predetermined position on the blank material 500. Alternatively, as shown in Figure 53B, a sheet for forming the position regulating member 30 may be wound in a ring shape, with the ends overlapping, and an adhesive or the like may be placed on at least one surface of the overlapping portion (before the overlapping portion is joined with the adhesive) to create an overlapping body PB. This overlapping body PB may then be placed in a predetermined position on the blank material 500, and the overlapping body PB may be bonded to the main body 20 with the adhesive 51A that forms the intervening wall bonding portion 51.In the above description, the annular body (an annular body formed by winding a sheet for forming the position regulating member 30 in an annular shape and joining the overlapping ends by adhesive or the like) was placed on the blank material 500. However, the placement of the annular body may be carried out after the blank material 500 has been formed into a bag shape. That is, a main body 20 without the position regulating member 30 may be manufactured, and the annular body may be attached to the inner surface of the peripheral wall portion 21 of such a main body 20. The attachment of the annular body can be achieved by first attaching adhesive or double-sided tape (here simply referred to as adhesive, etc.) to a predetermined position on the outer surface of the annular body, and then placing such annular body at a predetermined position on the inner surface of the peripheral wall portion 21 such that the adhesive, etc. is interposed between the annular body and the peripheral wall portion 21.

[0072] (Modification 2) According to the bag 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 the bag according to the third embodiment, the position regulating member 30 has a regulating wall portion 31 and an inner bottom portion 80, or, as shown in Figure 13, a regulating wall portion 31, an intervening wall 50 and an inner bottom portion 80. The bag according to the third embodiment has the same configuration as the first or second embodiment, except that the position regulating member 30 is provided with an inner bottom portion 80. That is, the bag according to the third embodiment has the configuration of the bag according to the first or second embodiment in which the position regulating member 30 is provided with an inner bottom portion 80. Therefore, in the description of the third embodiment, a detailed explanation of the other configurations of the position regulating member 30, excluding the inner bottom portion 80, will be omitted.

[0074] (Inner bottom) The position regulating member 30 has an inner bottom 80 as shown in Figure 13. The example in Figure 13 shows an example in which the bag 10 according to the third embodiment has a configuration in which the position regulating member 30 has a bottom 22, as in the bag 10 of the second embodiment. The inner bottom 80 is sometimes referred to as the small bottom because it is a smaller part than the bottom 22.

[0075] The inner bottom portion 80 may be separate from the regulating wall portion 31, but it is preferable that the inner bottom portion 80 and the regulating wall portion 31 are formed to be continuously connected. The same applies to the continuity between the inner bottom portion 80 and the intervening wall 50. In the example of Figure 13, the inner bottom portion 80 is formed to be continuous with the intervening wall 50 at the lower end of the intervening wall 50 and continuous with the regulating wall portion 31 at the lower end of the regulating wall portion 31. The inner bottom portion 80 supports the contents (for example, the container 200) from within the space portion 23 (within the small space portion 33). When the contents are a container (a container whose contents are liquids such as beverages), "supporting the contents from below" 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 lower side of the container 200, and this includes both cases where the contents are supported from below by the inner bottom portion 80 alone, and cases where the contents are supported from below by the inner bottom portion 80 and the bottom portion 22.

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

[0077] When the regulating wall portion 31 of the position regulating member 30 is in the first shape state ST1, and the upper surface of the inner bottom portion 80 forms the inclined surface 81 as described above, when a container as the contents is placed in the small space portion 33, as shown in Figure 16, the container 200 is tilted slightly toward the peripheral wall portion 21 of the main body 20, and the upper end of the container is more easily pressed against the inner surface of the peripheral wall portion 21 (direction of arrow FE), making it easier to form a gap 35 between the outer circumferential surface of the container body and the upper end of the regulating wall portion 31. When a gap 35 is formed between the outer circumferential surface of the container body and the upper end of the regulating wall portion 31, even if the contents of the container (for example, liquid such as a beverage) leak out of the container body, the contents are more likely to fall into the gap 35 between the regulating wall portion 31 and the container body, making it less likely for the contents to spill out over the regulating wall portion 31.

[0078] (Waterproof) Furthermore, in the event that liquid (liquid such as a beverage as the contents of the container) spills into the gap 35 between the regulating wall portion 313 and the container body, it is preferable that the inner bottom portion 80 be waterproof in order to prevent the spilled liquid from reaching the inner bottom portion, causing the inner bottom portion to rupture and reducing the container's support function. In order to prevent the position regulating member 30 from rupturing due to liquid seeping into the position regulating member 30, it is preferable that the entire position regulating member be waterproof.

[0079] (Gusset) The inner bottom portion preferably has a gusset 82 (bottom gusset), as shown in Figures 14A and 15A. In this case, the inner bottom portion 80 has a folding structure 83, which allows the state of the regulating wall portion 31 of the position regulating member 30 to smoothly change from the first shape state ST1 to the second shape state ST2, and also allows the state of the regulating wall portion 31 to change from the second shape state ST2 to the first shape state ST1. As described above, when an inclined surface 81 is formed on the upper surface of the inner bottom portion 80, as shown in Figure 15A, when the regulating wall portion 31 is in the second shape state, it is preferable that the lower end of the regulating wall portion 31 is located above the lower end of the intervening wall 50. In this case, when the state of the regulating wall portion 31 is changed from the second shape state ST2 to the first shape state ST1, the lower end of the regulating wall portion 31 is located above the lower end of the intervening wall 50, so that an inclined surface 81 is formed on the upper surface of the inner bottom portion 80 more reliably.

[0080] [3-2 Operation and Effects] The bag 10 according to the third embodiment can obtain the same effects as the first embodiment. Furthermore, if the bag 10 according to the third embodiment has the same configuration as the second embodiment, it can obtain the same effects as the second embodiment.

[0081] According to the third embodiment of the bag, because an inner bottom portion 80 is present, even if a beverage leaks from the container, the amount of liquid that wets the bag 10 can be greatly reduced.

[0082] [3-3 Modifications] (Modification 1) According to the bag body 10 of the third embodiment, the intervening wall 50 may be omitted in the position regulating member 30, as shown in Figures 17A and 17B (Modification 1). In the example of Figures 17A and 17B, the outer end edge 84 of the inner bottom portion 80 (the end edge of the inner bottom portion 80 that is directed outward) is joined to the peripheral wall portion 21. In this case, when the regulating wall portion 31 is in the second shape state ST2, it is preferable that the lower end of the regulating wall portion 31 is located above the lower end of the outer end edge 84 of the inner bottom portion 80, as shown in Figure 17B.

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

[0084] (Modification 3) The bag 10 according to the third embodiment may be provided with the configuration shown in the modification of the first embodiment and the modification of the second embodiment.

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

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

[0087] (Folded-back portion) When the regulating wall reinforcement structure is a folded-back portion 100, the position regulating member 30 has a folded-back portion 100 formed at the upper end 36 of the regulating wall portion 31, as shown in Figure 18A. In the folded-back portion 100 shown in Figure 18A, a predetermined portion on the upper end 36 side of the regulating wall portion 31 is folded back towards the facing surface 34. However, this is just one example, and the folded-back portion 100 may be folded back on the opposite side from the facing surface 34, as shown in Figure 18C, where a predetermined portion on the upper end side of the regulating wall portion 313 is folded back. The facing portions of the folded-back portion and the unfolded portion of the regulating wall 1 may be joined together with adhesive. Note that, as shown in Figure 18B, if the lower end of the regulating wall portion 31 is located above the lower end of the intervening wall 50, it is preferable that a folded-back portion 100 is formed at the upper end 36 of the regulating wall portion 31. When the lower end of the restricting wall portion 31 is located above the lower end of the intervening wall 50, an inclined surface 81 is easily formed on the upper surface of the inner bottom portion 80. The folded portion 100 is formed at the upper end 36 of the restricting wall portion 31, which further stabilizes the shape of the upper end 36 of the restricting wall portion 31 and stabilizes the shape of the gap 35, thereby enhancing the effect of the inclined surface 81.

[0088] (Reinforcement Material) When the regulating wall reinforcement structure is a reinforcement material 101, the position regulating member 30 is provided with a reinforcement material 101 at the upper end 36 of the regulating wall portion 31, as shown in Figures 19A and 19B. The reinforcement material 101 may be positioned on either the side facing the facing surface 34 or the side facing away from the facing surface 34. The reinforcement material 101 may be positioned on both the side facing the facing surface 34 and the side facing away from the facing surface 34. Furthermore, the material of the reinforcement material 101 is not particularly limited. Examples of materials for the reinforcement material 101 include paper-based materials, resin (resin sheet), metal, etc., but from the viewpoint of reducing environmental impact and ease of disposal after use, it is preferable to use a paper-based material. It is preferable to use a material for the reinforcement material that is stiffer than the position regulating member 30.

[0089] (Combination of reinforcing material and folded portion) As shown in Figures 20A, 20B, and 20C, a reinforcing material 101 and a folded portion 100 may be used in combination as a regulating wall reinforcement structure. For example, in the example of Figures 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 to cover (wrap around) the reinforcing material 101.

[0090] Furthermore, when the reinforcing material 101 and the folded portion 100 are used together, the configuration is not limited to the case where the folded portion 100 wraps around the reinforcing material 101. As shown in Figure 20C, the reinforcing material 101 may also be attached to the outside of the folded portion 100.

[0091] [4-2 Function and Effects] The bag body 10 according to the fourth embodiment provides the same effects as the bag body 10 of any of the first to third embodiments. Furthermore, in the bag body 10 according to the fourth embodiment, the position regulating member 30 becomes more rigid, so when the container is placed in the small space portion 33, the bag body 10 is less likely to lose its shape.

[0092] [4-3 Modified Examples] (Modified Example 1) In the bag body 10 according to the fourth embodiment, the reinforcing material 101 may be further arranged on the surface of the regulating wall portion 31 such that the vertical direction is the longitudinal direction of the reinforcing material 101. Such an embodiment will be referred to as Modified Example 1 of the fourth embodiment.

[0093] (Modification 2) According to the bag 10 of the fourth embodiment, the configurations shown in the modification of the first embodiment, the modification of the second embodiment, and the modification of the third embodiment may be provided. Such an embodiment will be referred to as Modification 2 of the fourth embodiment. In Modification 2 of the fourth embodiment, Modification 1 of the fourth embodiment may be further applied.

[0094] [5 Fifth Embodiment] [5-1 Configuration] The bag body 10 according to the fifth embodiment, as shown in Figures 21A, 21B, and 21C, has a lid portion 120 and an adhesive placement portion 121 is provided on the lid portion 120, in addition to the bag body 10 of the first to fourth embodiments. The example in Figures 21A to 21C shows an example in which the peripheral wall portion 21 has a pair of opposing wall portions 25 and a lid portion 120 and an adhesive placement portion 121 are provided.

[0095] (Peripheral Wall) The peripheral wall 21 shown in the example in Figure 21 has a pair of opposing wall surfaces 25. Here, the pair of wall surfaces 25 will be referred to as the first wall surface 25A and the second wall surface 25B. Note that the first wall surface 25A and the second wall surface 25B are specified only for the sake of explanation, and the terms first wall surface 25A and second wall surface 25B may be interchanged.

[0096] (Lid) A lid 120 is formed at the upper end of the first wall portion 25A so as to be able to cover the upper end of the second wall portion 25B. The shape of the lid 120 is not particularly limited. In the example of Figure 21B, the lid 120 is formed in a trapezoidal shape. As shown in Figures 22A, 22B, and 22C, from the viewpoint of forming a state in which the opening is firmly closed by covering the upper end of the second wall portion 25B with the lid 120, it is preferable that the lid 120 is formed over the entire width of the first wall portion 25A. Figures 22A, 22B, and 22C are diagrams illustrating the state in which the opening 24 is closed with the lid 120.

[0097] (Adhesive placement section) Preferably, the lid portion 120 is provided with an adhesive placement section 121 in which an adhesive that can be bonded to the second wall portion 25B is placed while the lid portion 120 covers the upper end of the second wall portion 25B. The adhesive placement section 121 may be an example of a sealing member. An example of a sealing member is double-sided tape.

[0098] (Release Paper) From the viewpoint of preventing dirt and other debris from adhering to the adhesive area 121 when the bag 10 is not in use, and from the viewpoint of preventing the adhesive area 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 area 121. The release paper 122 is configured to allow the release paper 122 from being attached to the surface of the adhesive area 121 when the bag 10 is not in use to be released (by peeling off the release paper 122) when the bag 10 is in use. As the release paper 122, a sheet material made of a material with weak adhesion to the adhesive constituting the adhesive area 121 can be used.

[0099] The release paper 122 may be configured to be completely physically detachable from the bag 10 when it is used, or it may be configured to be difficult to detach, as shown in Figures 22A to 22C. It is preferable that the bag 10 is configured such that even after the release paper 122 is peeled off the adhesive portion 121, a portion of the release paper 122 remains attached to the bag 10. In this case, the possibility of the release paper 122 separating from the bag 10 and becoming separate waste can be suppressed.

[0100] [5-2 Function and Effects] The bag 10 according to the fifth embodiment can obtain the same effects as any of the bag bodies from 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 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, a gripping portion 130 may be provided at a predetermined position on the first wall portion 25A, as shown in Figures 23A, 23B, and 23C. Such an embodiment will be referred to as Modification 1 of the fifth embodiment. In Modification 1 of the fifth embodiment, the shape of the gripping portion 130 is not particularly limited, as long as it is configured so that the gripping portion 130 can be grasped by the user's hand. In the example shown in Figures 23A to 23C, the gripping portion 130 has a rectangular outer edge and a chamfered rectangular through hole 131 inside. In this example, the through hole 131 is an elongated hole formed in a laterally elongated shape.

[0102] (First example of gripping portion) Figure 23 shows an example of the first example of the gripping portion 130. In the first example, the gripping portion 130 is integrally formed with the peripheral wall portion 21. The base end of the gripping portion 130 may be in the same position as the base end of the lid portion 120, or it may be formed in a position lower than the lid portion 120. In such a bag 10, as shown in Figures 24A, 24B, and 24C, the opening 24 can be securely closed by covering the upper end of the second wall portion 25B with the lid portion 120. When the opening 24 is closed, as shown in Figures 24A to 24C, the gripping portion 130 rises upward, making it easy to hold the bag 10 by passing fingers through the through hole 131 of the gripping portion 130.

[0103] (Second example of the gripping portion) Figure 26 shows an embodiment of a second example of the gripping portion 130. In the second example, the handle member 140 that forms the gripping 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 attachment 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 gripping portion 130 are arranged on the upper end side of the first wall portion 25A.

[0104] In both the first and second examples of the gripping portion 130, the gripping portion 130 may be configured to rise upward when the lid portion 120 covers the upper end of the second wall portion 25B, as shown in the examples in Figures 23 and 24. Alternatively, the gripping portion 130 may be positioned to rise upward beforehand, as shown in the example in Figure 26. Furthermore, in the bag body 10, the lid portion 120 may be positioned so that its tip points downward.

[0105] According to Modification 1 of the fifth embodiment, the presence of the gripping portion 130 improves the ease of carrying the bag 10.

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

[0107] (Weakening section) The weakening section may be a perforated section 150 in which through sections 152 and non-through sections 151 are alternately formed along a predetermined direction, as shown in Figures 25A and 25B, or it may be a half-cut section. Figure 25A is a diagram showing an example of the bag 10 when not in use, and Figure 25B is a diagram showing an example of the bag 10 when in use.

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

[0109] From the viewpoint of effectively suppressing the rupture of the bag body 10 starting from the weakened portion, it is preferable that the formation of the weakened portion be avoided near the peripheral edge of the lid portion 10. This can be achieved when the weakened portion is a perforated portion 150 in which through portions 152 and non-through portions 151 are alternately formed along a predetermined direction, by forming the perforated portion 150 such that the non-through portions 151 are located near the peripheral edge of the lid portion 120.

[0110] (Modification 3) In the bag 10 according to the fifth embodiment, if a release liner 122 is provided, the release liner 122 may have a display section on the exposed side of the release liner 122. Such an embodiment will be referred to as Modification 3 of the fifth embodiment. In Modification 3 of the fifth embodiment, the display section may be a printed section on the exposed side of the release liner 122, or a structure in which a printed sheet is attached to the exposed side of the release liner 122. By providing a display section, the contents of the bag can be described on the display section, and the contents of the bag 10 can be recognized by the user without opening the bag 10.

[0111] (Modification 4) The bag according to the fifth embodiment may be provided with the configurations shown in the modification of the first embodiment, the modification of the second embodiment, the modification of the third embodiment, and the modification of the fourth embodiment.

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

[0113] [6 Sixth Embodiment] [6-1 Configuration] The bag body 10 according to the sixth embodiment, as shown in Figures 64A and 64B, is provided with a receiving portion 155 on the regulating wall portion 31 of the position regulating member 30, in any of the bag body 10 from the first to fifth embodiments (excluding the reference example). The receiving portion 155 is a structure capable of receiving liquid that has fallen from above the regulating wall portion 31. Examples of the receiving portion 155 include a groove portion 156 that opens upward, as shown in Figures 64A and 64B, and a pocket portion (not shown) that has an opening formed upward. The receiving portion 155 may be provided on the side of the facing surface 34 of the regulating wall portion 31, as shown in the example in Figure 64C, or on the side of the surface opposite to the facing surface 34, as shown in Figures 64A and 64B. The receiving portion 155 may be made of the same material as the regulating wall portion 31. It is preferable that the receiving portion 155 is configured so that at least a part of its upper end can be deformed in a direction away from the regulating 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. Figures 64A and 64B are cross-sectional views illustrating the bag body 10 according to the sixth embodiment. Figure 64A shows the portion of the regulating wall portion 31 of the position regulating member 30. Figure 64B shows an example in which the container 200 is contained in the bag body 10. Figure 64C is a cross-sectional view illustrating the bag body 10 according to the sixth embodiment.

[0114] [6-2 Function and Effects] According to the sixth embodiment of the bag, the presence of a receiving portion 155 makes it easy to trap liquid spills from a container when the container is stored inside the bag 10.

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

[0116] In the bag 10 according to the seventh embodiment, as shown in Figures 27A to 27C, the main body 20 has a bottom portion 22 and a peripheral wall portion 21 connected to the bottom portion 22. The peripheral wall portion 21 has a pair of opposing wall portions 25, a first wall portion 25A and a second wall portion 25B. The main body 20 forms a space portion 23 surrounded by the bottom portion 22 and the peripheral wall portion 21, capable of storing contents (container 200, etc.), and an opening 24 into which the contents are inserted. In the bag 10 according to the seventh embodiment, as shown in Figures 27A to 27C, an adhesive member 160 is attached to the outer surface 21B of the peripheral wall portion 21. The configuration of the main body 20 (peripheral wall portion 21 and bottom portion 22) is the same as that described in the first to sixth embodiments, so a detailed explanation is 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 area on the outer surface of the first wall portion 25A. Furthermore, the bag body 10 according to the seventh embodiment is configured such that at least a part of the second adhesive surface forming portion 162 can be adhered to the outer surface of the second wall portion 25B when the bending structure 170 described later is formed. The adhesive member 160 is arranged such that the second adhesive surface forming portion 162 straddles the 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 enable the formation of a bending structure 170, as will be described later. In the example of Figure 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 is possible to form a first adhesive surface forming portion 161 and a second adhesive surface forming portion 162. In the example shown in Figures 27A to 27C, the adhesive member 160 is formed in a U-shape, but this is just one example. From the viewpoint of being able to stabilize the bending structure 170 and forming a grippable gap 171, it is preferable that the shape of the adhesive member 160 is such that the second adhesive surface forming portion 162 is positioned near both ends of the bending structure 170, separated in the longitudinal direction of the bending structure 170, and the first adhesive surface forming portion 161 is positioned away from the bending structure 170.

[0120] (Bending structure) The bending structure 170 is defined as the portion obtained by bending the first wall portion 25A and the second wall portion 25B so that the outer surface of the first wall portion 25A and the outer surface of the second wall portion 25B face each other when the first wall portion 25A and the second wall portion 25B are superimposed. The state in which the first upper end side wall portion 165A and the second upper end side wall portion 165B are superimposed may include not only a state in which the inner surface of the first upper end side wall portion 165A and the inner surface of the second upper end side wall portion 165B are in contact, but also a state in which the distance Wh between the first upper end side wall portion 165A and the second upper end side wall portion 165B is narrowed to be smaller than the sum of the thicknesses of the first upper end side wall portion 165A and the second upper end side wall portion 165B. Preferably, the state in which the first upper end side wall portion 165A and the second upper end side wall portion 165B are superimposed is a state in which the inner surface of the first upper end side wall portion 165A and the inner surface of the second upper end side wall portion 165B are in contact.

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

[0122] In the example of the bag body 10 shown in Figures 27A to 27C, the bending 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 body 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] The bag body 10 is folded further at the lower end of the first peripheral wall forming portion 166, with the first folded end 172 as the upper end, in a direction toward the second wall portion 25B. That is, the first peripheral wall forming portion 166 is folded multiple times (twice in the examples of Figures 28 and 29). At this time, as shown in Figure 29, a bent structure 170 is formed. Therefore, in the examples of Figures 29A and 29B, the bent structure 170 is defined by the portion where the first wall portion 25A and the second wall portion 25B are bent toward the second wall portion 25B so that the outer surfaces of the first wall portion 25A and the second wall portion 25B face each other. In the examples of Figures 29A and 29B, the bent structure 170 is a bent structure formed by multiple folds. Because the bending structure 170 is the folded structure described above, the opening 24 is concealed within the bending structure 170.

[0124] Furthermore, when the bending structure 170 is formed, as shown in Figures 29A and 29B, at least a portion of the second adhesive surface forming portion 162 faces the outer surface of the second wall surface portion 25B without passing through the first wall surface portion 25A. In other words, when the bending structure 170 is formed, the position of the adhesive member 160 is determined 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 the bending structure 170 is not formed, as shown in Figures 27A to 27C, the second adhesive surface forming portion 162 is not adhered to the outer surface 21B of the peripheral wall portion 21.

[0125] When the bending structure 170 is formed, it is preferable that the second adhesive surface forming portion 162 is adhered to at least the outer surface of the second wall portion 25B, as shown in Figures 30A and 30B. By adhering the second adhesive surface forming portion 162 to the outer surface of the second wall portion 25B in this way, the bending structure 170 becomes easier to fix. Since the bending structure 170 is a structure that conceals the opening 24 as described above, and the second adhesive surface forming portion 162 is adhered to at least the second wall portion 25B, it is possible to prevent a third party other than the user from opening the opening 24 of the bag and illegally inserting their hand into the inside of the bag 10 through the opening 24. Furthermore, by adhering the second adhesive surface forming portion 162 to at least the outer surface of the second wall portion 25B, the bending structure 170 can be stabilized. Therefore, the structure of the "graspable gap 171" which will be described later and is formed in conjunction with the formation of the bending structure 170 can be stabilized.

[0126] (Gap) When the second adhesive surface forming portion 162 is bonded to the peripheral wall portion 21, it is preferable that a grippable gap 171 is formed between the first peripheral wall forming portion 166 that forms the bending structure 170 and the second peripheral wall forming portion 167 excluding the first peripheral wall forming portion 166. With such a gap 171 formed, the user can insert their hand into the gap 171 and carry the bag 10 by hand. In this case, since the bending structure 170 is fixed and the opening 24 is closed, it is restricted from inserting a hand into the space portion 23 from the gap 171.

[0127] (Release Member) In the bag body 10 according to the seventh embodiment, as shown in Figures 27 to 30, it is preferable that a release member 175 having release properties is attached so as to cover the second adhesive surface forming portion 162. As the release member 175, so-called release paper may be suitably used. When the bending structure 170 is not formed, it is preferable that the release member 175 is positioned so as to cover the second adhesive surface forming portion 162. When the bending structure 170 is formed, the release member 175 is peeled off from the second adhesive surface forming portion 162 so as to expose the second adhesive surface forming portion 162.

[0128] Furthermore, the release member 175 may be configured in such a way that complete separation from the adhesive member 160 is avoided. In the example shown in Figure 30A, the release member 175 is joined to the end of the adhesive member 160 (the end further towards the tip from the second adhesive surface forming portion 162), so that even if the release member 175 is peeled off the second adhesive surface forming portion 162, the release member 175 remains connected to the end of the adhesive member 160.

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

[0130] [7-2 Function 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, which allows a grippable gap 171 to be formed, so that the user can insert their hand into the gap 171 and carry the bag body 10. In addition, the adhesive member 160 and the bending structure 170 are formed, which stabilizes the bending structure 170 and allows for a stable concealment of the opening 24, thus suppressing the risk of a third party illegally inserting their hand into the space 23 from the opening 24.

[0131] [7-3 Modifications] (Modification 1) In the example of the bag 10 according to the seventh embodiment, the second adhesive surface forming portion 162 is configured to be able to adhere to the second wall portion 25B when the bent structure 170 is formed, but this is just one example. The bag 10 according to the seventh embodiment may be configured so that the second adhesive surface forming portion 162 is able to adhere to the first wall portion 25A and the second wall portion 25B when the bent structure 170 is formed (Modification 1). In this case, when the bent structure 170 is formed, it is preferable that the second adhesive surface forming portion 162 is positioned across the lower end 173 of the bent structure 170 and is adhered to the outer surface of the first wall portion 25A and the outer surface of the second wall portion 25B. As described above, the bent structure 170 is a structural part that conceals the opening 24, and the second adhesive surface forming part 162 is bonded to at least both the outer surface of the first wall portion 25A and the outer surface of the second wall portion 25B, thereby more effectively preventing a third party other than the user from illegally opening the opening 24 of the bag 10. In other words, since the second adhesive surface forming part 162 is positioned across the lower end 173 of the bent structure 170 and bonded to the first wall portion 25A and the second wall portion 25B, if a third party other than the user illegally opens the opening 24 of the bag 10, it is more likely that traces of the illegal activity will remain, such as by causing a rupture in the adhesive member 160, thereby more effectively preventing a third party from illegally inserting their hand into the bag 10 through the opening 24.

[0132] (Modification 2) In the bag body 10 according to the seventh embodiment, the bending structure 170 may be defined as the portion obtained by bending the first wall portion 25A and the second wall portion 25B toward the first wall portion 25A, with the outer surfaces of the first wall portion 25A and the outer surfaces of the second wall 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 adhesive member 160 described above may be provided in a bag body that omits the position regulating member 30 from each of the bag bodies 10 of the first to sixth embodiments (i.e., a bag body consisting only of the main body as shown in Figure 31) (reference example). Also, as shown in Figure 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 Figure 32, the adhesive placement portion 179 for closing 24 is located on the upper end side of the peripheral wall portion 21 and on the inner surface side of the peripheral wall portion 21. This adhesive placement portion can be exemplified by double-sided adhesive tape or the like.

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

[0135] In the bag 10 according to the eighth embodiment, the main body 20 has a bottom portion 22 and a peripheral wall portion 21 connected to the bottom portion 22, and the peripheral wall portion 21 has a first wall portion 25A and a second wall portion 25B as a pair of opposing wall portions 25. The main body 20 forms a space portion 23 surrounded by the bottom portion 22 and the peripheral wall portion 21 and capable of storing contents, and an opening 24 into which the contents are inserted. In the bag 10 according to the eighth embodiment, as shown in Figures 33A to 33B, a seal sheet 180 is attached to the outer surface 21B of the peripheral wall portion 21. Note that the configuration of the main body 20 (peripheral wall portion 21 and bottom portion 22, etc.) is the same as that described in the first to seventh embodiments, so a detailed explanation is omitted. In the figures showing an example of the eighth embodiment (Figures 33 to 35 and 37, etc.), for the sake of explanation, the description of the position regulating member 30 is omitted.

[0136] (Seal Sheet) The seal sheet 180 is equipped with a seal member 181 that can be attached and detached. In the example shown in Figures 33A and 33B, the seal member 181 is attached to the seal base 182 in a detachable manner. The seal member 181 has an adhesive surface forming portion 183 and is attached to the surface of the seal base 182 in a detachable manner with the adhesive surface forming portion 183 facing the seal base 182. Detachable means that it can be peeled off and re-attached to the surface of the seal base 182. In addition, "re-attachable" includes cases where the adhesive strength of the seal member 181 to the seal base 182 is reduced when re-attached. The seal sheet 180 is attached to a predetermined area of ​​the outer surface 21B of the peripheral wall portion 21. Furthermore, in the bag body 10 according to the seventh embodiment, the seal sheet 180 is attached to the outer surface 21B of the peripheral wall portion 21 so as to avoid the portion of the peripheral wall portion 21 that forms the bending structure 170. In the examples shown in Figures 33A and 33B, the seal sheet 180 is attached to the second wall surface 25B of the peripheral wall 21, but this is just one example. At least a portion of the seal sheet 180 may be attached to a portion that is not attached to the second wall surface 25B.

[0137] (Sealing Member) The sealing member 181 is positioned to straddle the lower end 173 of the bending structure 170, which will be described later, when the bending structure 170 is formed (Condition 1). The sealing member 181 is configured to be able to adhere to the peripheral wall portion 21 when the bending structure 170 is formed, with the adhesive surface forming portion 183 facing the first wall portion 25A and the second wall portion 25B (Condition 2).

[0138] The shape and quantity 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-described conditions 1 and 2. In the example shown in Figures 33A and 33B, the sealing members 181 are composed of two rectangular sheet materials having a predetermined size.

[0139] (Seal base) The seal base 182 can preferably use a member having a peelable surface on one of its surfaces. With the peelable surface facing outwards (with the peelable surface facing outwards relative to the seal member 181), the back side of the seal base 182 is attached to the peripheral wall portion 21, thereby being positioned on the outer surface 21B of the peripheral wall portion 21.

[0140] (Bending Structure) In the eighth embodiment of the bag 10, the bending structure 170 is defined by the same definition as the bending structure 170 described in the seventh embodiment. That is, the bending structure 170 is defined as the portion obtained by bending the first wall portion 25A and the second wall portion 25B such that the outer surface of the first wall portion 25A and the outer surface of the second wall portion 25B face each other when the first wall portion 25A and the second wall portion 25B are superimposed.

[0141] The first upper side wall portion 165A and the second upper side wall portion 165B are also specified by the same definition as the first upper side wall portion 165A and the second upper side wall portion 165B of the bending structure 170 described in the seventh embodiment. Here, as described in the seventh embodiment, the predetermined upper end portion of the peripheral wall portion 21 that is intended to constitute the bending structure 170 is referred to as the first peripheral wall portion forming portion 166, and the portion excluding the first peripheral wall portion forming portion 166 is referred to as the second peripheral wall portion forming portion 167. That is, assuming a state in which the bending structure 170 is formed on the bag body 10, the portion that forms the bending structure 170 is referred to as the first peripheral wall portion forming portion 166, and the portion excluding the first peripheral wall portion forming portion 166 is referred to as the second peripheral wall portion forming portion 167. Specifically, the first peripheral wall forming portion 166 is defined as the portion of the peripheral wall 21 that extends from the portion forming the opening 24 which is the end of the peripheral wall 21 to the portion of the bendable peripheral wall 21 that is close to the bottom portion 22.

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

[0143] Note that the bending structure 170 shown in Figure 33B is just one example. The bending structure 170 may also be defined as the portion where the first wall portion 25A and the second wall portion 25B are bent toward the first wall portion 25A, with the outer surfaces of the first wall portion 25A and the outer surfaces of the second wall portion 25B facing each other.

[0144] When the bent structure 170 is formed, the sealing member 181 is peeled off the sealing sheet 180, as shown in Figures 33B and 37A. The sealing member 181 is then positioned 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 bonded to the peripheral wall portion 21 with the adhesive surface forming portion 183 facing the first wall portion 25A and the second wall portion 25B. The bent structure 170 is fixed by the sealing member 181 being bonded to the first wall portion 25A and the second wall portion 25B in this manner.

[0145] In the example shown in Figure 33B, the sealing member 181 is positioned near both ends along the longitudinal direction of the bending structure 170, but this is just one example.

[0146] In the eighth embodiment of the bag 10, when the sealing member 181 is bonded to the peripheral wall portion 21, as shown in Figure 37B, a grippable gap 171 is formed between the first peripheral wall portion forming portion 166 that forms the bending structure 170 and the second peripheral wall portion forming portion 167 excluding the first peripheral wall portion forming portion 166, as described in the seventh embodiment. With such a gap 171 formed, the user can insert their hand into the gap 171 and carry the bag 10 by hand.

[0147] [8-2 Function and Effects] According to the eighth embodiment of the bag 10, the presence of the sealing member 181 allows for the stable formation of a grippable gap 171 when the bent structure 170 is formed, enabling the user to carry the bag 10 by inserting their hand into the gap 171. Furthermore, the sealing member 181 stabilizes the bent structure 170, allowing for the stable formation of a state in which the opening 24 is concealed, thereby suppressing the risk of a third party illegally inserting their hand into the space 23 through the opening 24.

[0148] [8-3 Modifications] (Modification 1) In the eighth embodiment, as shown in Figures 34A, 34B, 35A, and 35B, the sealing member 181 may have a through hole 184 (Modification 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 bonded to the outer surface 21B of the peripheral wall portion 21. Figures 34A and 34 show an example in which one through hole 184 is formed, and Figures 35A and 35B show an example in which multiple through holes 184 are formed (three in Figures 35A and 35B).

[0149] [8-4 Reference Examples] (Reference Example 1) In the bag according to the eighth embodiment, the above-described seal sheet 180 may be provided in a bag 10 obtained by omitting the position regulating member 30 from each of the bag 10 of the first to sixth embodiments (i.e., a bag 10 consisting only of the main body 20 as shown in Figure 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 Figure 32. The adhesive placement portion 179 for closing the opening 24 is located on the upper end side of the peripheral wall portion 21 and on the inner surface 21A side of the peripheral wall portion 21. This adhesive placement portion 179 can be exemplified by double-sided adhesive tape or the like.

[0150] (Reference Example 2) In the eighth embodiment of the bag body 10, the sealing sheet 180 was attached to the main body 20 of the bag body 10. However, the bag body 10 and the sealing sheet 180 may be combined with the sealing sheet 180 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 the space 23 of the bag body 10 beforehand.

[0151] [9. Ninth Embodiment] The bag body 10 according to the ninth embodiment has a bag body weakening portion 190 as shown below, in any of the bag body 10 of the first to eighth embodiments.

[0152] In the bag 10 according to the ninth embodiment, the main body 20 has a bottom portion 22 and a peripheral wall portion 21 connected to the bottom portion 22, and the peripheral wall portion 21 has a first wall portion 25A and a second wall portion 25B as a pair of opposing wall portions 25. The main body 20 forms a space portion 23 surrounded by the bottom portion 22 and the peripheral wall portion 21 and capable of storing contents, and an opening 24 into which the contents are inserted. In the bag 10 according to the ninth embodiment, as shown in Figures 38A to 38B, a bag weakening portion 190 is formed on the peripheral wall portion 21. The configuration of the main body 20 (peripheral wall portion 21 and bottom portion 22, etc.) is the same as that described in the first to eighth embodiments, so a detailed explanation is omitted. In each figure (Figure 38) showing an example of the ninth embodiment, for the sake of explanation, the description of the position regulating member 30 is omitted. Figure 38 shows an embodiment in which, for a bag according to the fifth embodiment, a bag weakening portion 190 is formed on the second wall portion 25B of the peripheral wall portion 21 of the main body.

[0153] (Weakening portion of the bag) The weakening portion of the bag 190 is identified as a portion of the peripheral wall 21 that is structurally weaker than a portion other than the weakening portion of the bag 21. Examples of the weakening portion of the bag 190 include perforated sections and half-cut sections. From the viewpoint of maintaining the internal temperature of the bag 10 as much as possible, it is preferable that the weakening portion of the bag 190 is a half-cut section. The half-cut section can be identified as a structural portion in which the peripheral wall 21 is cut to a predetermined depth in the thickness direction of the peripheral wall 21. The depth of the "cut into the peripheral wall 21" that forms the half-cut section is not limited to the portion in which the peripheral wall 21 is cut to half the thickness of the peripheral wall 21. The depth of the cut into the peripheral wall 21 may exceed half the thickness of the peripheral wall 21, or it may be less than half the thickness of the peripheral wall 21. The half-cut portion may be formed by cutting from the inner surface 21A toward the outer surface 21B of the peripheral wall portion 21, or 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. Preferably, the half-cut portion is formed by cutting from the inner surface 21A toward the outer surface 21B of the peripheral wall portion 21.

[0154] In the example shown in Figure 38, the weakened portion 190 of the bag is formed in a U-shape, but this is just one example. The shape of the weakened portion 190 of the bag is not particularly limited. Furthermore, by breaking the weakened portion 190 of the bag, the lid portion 191 is formed, or by peeling back the lid portion 191 outward and breaking the weakened portion 190 of the bag, the space 23 of the bag 10 can be exposed, and the contents stored in the space 23 can be removed. In the examples shown in Figures 38A and 38B, the weakened portion 190 of the bag is broken by peeling back the lid portion 191 from bottom to top and outward, thereby exposing the space 23 of the bag 10. However, this is just one example of the lid portion 191. The lid portion 191 may be formed such that the space 23 of the bag body 10 is exposed by flipping the lid portion 191 outward from top to bottom, or the lid portion 191 may be formed such that the space 23 of the bag body 10 is exposed by flipping the lid portion 191 in a door-like manner.

[0155] In the example shown in Figure 38, the bag weakening portion 190 is formed on the second wall portion 25B, but this is just one example. It may also be formed on the first wall portion 25A, or on both sides of the first wall portion 25A and the second wall portion 25B. Furthermore, the bag weakening portion 190 may be formed over the entire surface of the peripheral wall portion 21. In addition, the bag weakening portion 190 may be formed to encircle the entire circumference of the peripheral wall portion 21.

[0156] (Tab) From the viewpoint of facilitating the displacement of the lid portion 191, it is preferable that the lid portion 191 is provided with a tab 192. By pinching the tab 192 and pulling it outward, the user can displace (flip up) the lid portion 191 and allow the rupture of the weakened portion 190 of the bag to progress. As the lid portion 191 is displaced and the rupture of the weakened portion 190 of the bag progresses, a state is formed in which the space portion 23 of the bag body 10 is exposed, and the contents stored in the space portion 23 can be removed.

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

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

[0159] In the example shown in Figure 39, the perimeter wall consists of a pair of opposing wall surfaces 25, which are conveniently referred to as the first wall surface 25A and the second wall surface 25B. In other words, the terms "first wall surface 25A" and "second wall surface 25B" are used only for the sake of explanation, and the terms "first wall surface 25A" and "second wall surface 25B" may be interchangeable.

[0160] In the bag body 10 according to the tenth embodiment, a lid portion 120 and an adhesive placement portion 121 are formed at the upper end of the first wall portion 25A, similar to the one described in the fifth embodiment. Furthermore, as shown in the example in Figure 39, it is preferable that the bag body according to the tenth embodiment is provided with release paper 122, similar to the one described in the fifth embodiment. The configurations of the lid portion 120, the adhesive placement portion 121, and the release paper 122 are the same as those described in the fifth embodiment, so a detailed explanation is omitted.

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

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

[0163] (Grip structure) When the bag body 10 has the lid portion 120 covering the upper end of the second wall portion 25B (when the opening 24 is closed by covering the upper end of the second wall portion 25B with the lid portion 120), the position of the lid penetration portion 193 is roughly aligned with the position where the main body penetration portion 195 of the second wall portion 25B is formed. At this time, the position of the lid penetration portion 193, the position where the main body penetration portion 195 of the second wall portion 25B is formed, and the position where the main body penetration portion 195 of the first wall portion 25A is formed is roughly aligned, and the grip structure portion 194 is formed by the lid penetration portion 193 and the main body penetration portion 195.

[0164] [10-2 Function and Effects] According to the tenth embodiment of the bag 10, when the opening 24 is closed by covering the upper end of the second wall portion 25B with the lid portion 120, the user can easily carry the bag 10 by using the gripping structure portion 194 as a handle. The lid penetration portion 193 can be made into a rigid part by making the surrounding area an adhesive placement portion 121, so that the gripping structure portion 194 can be made into a robust structure.

[0165] [10-3 Modified Forms] (Modified Form 1) In the bag according to the tenth embodiment, the shapes of the lid penetration portion 193 and the body penetration portion 195 are not limited to a rectangular shape, but may be other shapes (Modified Form 1). In the bag 10 according to Modified Form 1 of the tenth embodiment, for example, the shapes of the lid penetration portion 193 and the body penetration portion 195 may be elliptical, triangular, polygonal, or irregular, as shown in Figure 41. Also, the shapes of the lid penetration portion 193 and the body penetration portion 195 may be the same or different.

[0166] (Modification 2) In the bag body 10 according to the tenth embodiment, the lid penetration portion 193 may be formed in a slit shape as shown in Figures 42 to 47 (Modification 2). In Modification 2, it is preferable that the lid penetration portion 193 is formed in a shape that forms a gripping structure reinforcing portion 196.

[0167] (Gripping structure reinforcement part) The gripping structure reinforcement part 196 can be identified as a part having a structure that allows the entire gripping structure reinforcement part 196, from the base end to the tip TP (tip TP of the gripping structure reinforcement part 196), to rotate, with the base end BP being the base end BP as the axis of rotation.

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

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

[0170] (Second example of lid penetration and gripping structure reinforcement) Figures 44, 45, and 46A show a second example of the lid penetration 193 and the gripping structure reinforcement 196. In the second example, as shown in Figure 44, the lid penetration 193 is formed such that the gripping structure reinforcement 196 has its base end BP on the lower side and its tip TP on the upper side when the tip of the lid 120 is facing upward.

[0171] In the second example, when the opening 24 is closed by covering the upper end of the second wall portion 25B with the lid portion 120, the gripping structure reinforcing portion 196 will be positioned with its base end BP on the upper side and its tip TP on the lower side, as shown in Figures 45A to 45C. In this case, as shown in Figure 46B, it is preferable that the gripping structure reinforcing portion 196 be bent towards the space portion 23. This is because, similar to the first example, the structure of the gripping structure 194 can be reinforced by folding a predetermined portion of the gripping structure reinforcing portion 196 on the tip TP side towards the outer surface of the first wall portion 25A while the tip TP of the gripping structure reinforcing portion 196 passes through the main body penetration portion 195 of the second wall portion 25B and the main body penetration portion 195 of the first wall portion 25A. In the second example, unlike the first example, the tip TP is bent upwards.

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

[0173] [10-4 Reference Example] In the bag body 10 according to the tenth embodiment, the lid penetration portion 193 and the body penetration portion 195 described above may be provided in the bag body 10 of the first to fourth embodiments in which the position regulating member 30 is omitted (i.e., a bag body consisting only of the body 20 as shown in Figure 31) (reference example). In the reference example, as shown in Figure 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 located on the upper end side of the peripheral wall portion 21 and on the inner surface 21A side of the peripheral wall portion 21. The adhesive placement portion 179 can be exemplified by double-sided adhesive tape or the like.

[0174] [11 Eleventh Embodiment] [11-1 Structure] The bag body 10 according to the eleventh embodiment may be provided with a small piece portion 220 and a peelable portion 221, as shown in the examples in Figures 54A, 54B, 54C and 54D, in any of the bag bodies from the first to the tenth embodiment. Figures 54A to 54D are diagrams illustrating one embodiment of the eleventh embodiment.

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

[0176] In the example shown in Figure 54, the peripheral wall portion 21 consists of a pair of opposing wall portions 25, which are conveniently referred to as the first wall portion 25A and the second wall portion 25B. In other words, the first wall portion 25A and the second wall portion 25B are specified only for the sake of explanation, and the terms first wall portion 25A and second wall portion 25B may be interchanged.

[0177] (Small Piece) The bag body 10 according to the tenth embodiment has a small piece 220 on the peripheral wall 21. The small piece 220 has an adhesive surface 223 on which adhesive material is placed. The adhesive surface 223 of the small piece 220 is formed such that, when the small piece 220 is rotated around the fixed end 226 of the small piece 220 as an axis, it can face the inner surface of the wall surface 25 connected to the small piece 220, and can face the outer surface of the wall surface 25 that faces the wall surface 25 connected to the small piece 220. Specifically, in the example shown in Figures 54A to 54D, the small piece 220 is formed as a portion extending from the first wall surface 25A. Furthermore, the adhesive surface 223 of the small piece portion 220 is formed such that, when the small piece portion 220 is rotated around its fixed end 226 as an axis, it 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.

[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 a part in which the free end 227 can be rotated around the fixed end 226 as an axis. In the example of Figure 54, the small piece portion 220 has a fixed end 226 at a part of the upper end 225 of the first wall portion 25A, and is formed as a portion that extends in a roughly rectangular shape from the upper end 225 of the first wall portion 25A, with the tip of the extended portion (the tip side of the small piece portion 220) being the free end 227. In the example of Figure 54, the small piece portion 220 is made of the same material as the first wall portion 25A, and the area around the fixed end 226 of the small piece portion 220 can be bent so that the small piece portion 220 can be rotated around the fixed end 226 as an axis. The shape of the small piece portion 220 is generally rectangular. However, the small piece portion shown in Figure 54 is just one example, and the small piece portion is not limited to this example. For example, the small piece portion 220 may be a portion extending from a predetermined position below the upper end 225 of the first wall portion 25A. Also, the material of the small piece portion 220 may be different from the material of the first wall portion 25A.

[0179] The number of small pieces 220 is not particularly limited. Also, the shape of the small pieces 220 is not particularly limited. In the example shown in Figures 54A to 54D, two small pieces 220 are formed. When multiple small pieces 220 are provided, for example, the small pieces 220 may be unevenly distributed on the first wall surface 25A, or some of the small pieces 220 may be located on the first wall surface 25A and the other small pieces 220 may be located on the second wall surface 25B.

[0180] (Adhesive Adhesion Surface) A layer 222 made of adhesive material is formed on the small piece portion 220, and the surface of the layer 222 (the surface facing the small piece portion's opposing surface 224) is 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 the bag 10 is used to store containers containing juice or coffee, or to store food items such as potatoes or hamburgers, it is preferable to use an adhesive that can be used for packaging food.

[0181] (Removable portion) The removable portion 221 is a portion configured to be re-adhered to the small piece portion 220 in a removable manner. In the removable portion 221, the surface configured in the region corresponding to the portion configured to be adhered to the small piece portion 220 is referred to as the small piece portion opposing surface 224. Therefore, the removable portion 221 has a small piece portion opposing surface 224. The small piece portion opposing surface 224 can be identified as a predetermined region at a position that can face the adhesive surface 223.

[0182] In the bag body 10, the peelable portion 221 is positioned to avoid exposure to the outside of the main body 20. By positioning the peelable portion 221 in this manner, even when the opening 24 of the bag body 10 is closed using the small piece portion 220, the peelable portion 221 can be prevented from being exposed to the outside of the bag body 10, thus improving the appearance of the bag body 10. Note that the position that avoids exposure to the outside of the main body 20 also includes positions on the surface area of ​​a separate member, such as a backing material 251 (described later), if such a separate member (a member other than the main body 20) is provided on the inner surface side of the main body 20. For example, as shown in Figure 62C, at least a part of at least one peelable portion 221 may be placed at the position of the backing material 251. Note that Figure 62C also serves as a diagram showing another example of the bag body 10 according to Modification 5 of the 11th embodiment, which will be described later.

[0183] The peelable portion 221 has a peelable layer 228. Examples of materials for the peelable layer 228 include silicone resin. It is preferable that a sealing layer is provided between the peelable layer 228 and the member located on the back side of the peelable layer 228 (the member forming the wall portion 25) to suppress the penetration of the compound forming the peelable layer 228. Furthermore, it is preferable that the surface of the peelable layer 228 forms the small piece facing surface 224.

[0184] (Restriction of opening by small piece portion and peelable portion) In the bag body 10, as shown in Figures 55A to 55C, 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. That is, in the bag body 10, at least a part of the small piece portion 220 is peeled off from the peelable portion 221 and bent, and the small piece portion 220 is configured to be adhered to the peripheral wall portion 21 in the area of ​​the adhesive adhesion surface 223 in such a state that it prevents the first wall portion 25A and the second wall portion 25B from moving apart. Figures 55A to 55C are diagrams illustrating the 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 expansion of the opening 24 is restricted by the small piece portion 220 can be formed as follows. With respect to the bag body 10, the small piece portion 220 is attached to the peelable portion 221 as shown in Figure 54D, and then the small piece portion 220 is peeled off from the peelable portion 221 as shown in Figures 55A and 55B. In Figures 55A and 55B, the small piece portion 220 is positioned directly above the wall portion 25, but this is just one example.

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

[0187] [11-2 Function and Effects] In conventional bags, in order to prevent unintended enlargement of the opening 24, a separate sealing material was prepared on the peripheral wall 21 and the opening 24 was closed by attaching the sealing material. However, the work of preparing the separate sealing material and managing the inventory of the separately prepared sealing material was required, which resulted in a decrease in work efficiency.

[0188] In the bag body 10 according to the 11th embodiment, since the main body 20 is provided with a small piece portion 220 having an adhesive surface 223 in advance, it is possible to eliminate the need to prepare a separate sealing material and to omit inventory management of sealing materials. Furthermore, the adhesive surface 223 of the small piece portion 220 is not only temporarily fixed (adhered in a way that allows for re-peeling) with a peelable portion 221, but the peelable portion 221 is also prevented from being exposed to the outside of the bag body 10, thereby suppressing a decrease in appearance quality due to unintentional exposure of the peelable portion 221.

[0189] [11-3 Modified Forms] (Modified Form 1) In the bag body 10 according to the 11th embodiment, as shown in Figure 56A, an adhesive element 230 formed separately from the peripheral wall portion 21 is adhered to the peripheral wall portion 21, and a part of the adhesive element 230 may form the small piece portion 220. This form will be referred to as Modified Form 1 of the 11th embodiment. Figure 56A is a cross-sectional view illustrating the main part of the bag body 10 according to Modified Form 1 of the 11th embodiment. Figure 56A shows a cross-sectional view of the bag body according to Modified Form 1 of the 11th embodiment corresponding to the cross-sectional view in Figure 55A. Note that in Figure 56A, for the convenience of explanation, the adhesive surface 223 and the small piece portion opposing surface 224 are shown separated. In the unused state, it is preferable that the adhesive surface 223 and the small piece portion opposing surface 224 are adhered to each other.

[0190] The adhesive piece 230 has a predetermined portion at one end that is adhered to the wall portion 25 (the first wall portion 25A in the example of Figure 56A), and the portion at the other end that is not adhered to the wall portion 25 and extends from the wall portion 25 forms a 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. Of the surfaces of the adhesive piece 230, the adhesive surface between the fixing portion 240 of the adhesive piece 230 and the wall portion 25 is the same surface as the surface on which the adhesive adhesion surface 223 is formed. Here, "not adhered to the wall portion 25" refers to a state in which the adhesive adhesion surface 223 of the small piece portion 220 is not adhered to the outer surface of a specific wall portion 25. The specific wall portion 25 refers to the wall portion 25 that is opposite to the wall portion 25 to which the adhesive piece 230 is adhered at a predetermined portion at one end. In the example of Figure 56A, the specific wall portion 25 is the second wall portion 25B. In the example of Figure 56, the adhesive piece 230 has an adhesive layer 222 on at least one side of the base sheet 231 for the piece, 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 from the portion excluding the small piece portion 220, and in an area defined on the surface of the base sheet 231 for the piece that is on the same side as the surface where the layer 222 is formed. It is preferable that the upper end of the portion of the adhesive piece 230 that is 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 that is opposite to the surface on which the peelable portion 221 is formed. When the bag 10 is not in use (before the state in which the opening 24 is restricted is formed), the adhesive piece 230 is bent so that the adhesive surface 223 of the small piece portion 220 of the adhesive piece 230 faces the surface 224 of the peelable portion 221. Furthermore, the adhesive piece 230 is adhered to the surface 224 of the small piece portion at the adhesive surface 223 in a manner that allows for re-peelability.

[0192] (Formation of a state in which the expansion of the opening 24 is restricted) In the first modification of the eleventh embodiment, the small piece portion 220 of the adhesive piece 230 is bent so that the adhesive surface 223 faces the outer surface of the wall portion 25 (second wall portion 25B in Figure 56A) that is opposite to the wall portion 25 (first wall portion 25A in Figure 56A) that is connected to the small piece portion 220. Then, the adhesive surface 223 of the small piece portion 220 is bonded to the wall portion 25. At this time, movement that separates the first wall portion 25A and the second wall portion 25B, which are the wall portions 25, is prevented, so a state is formed in which the expansion of the opening 24 is restricted.

[0193] (Modification 2) In the bag 10 according to the 11th embodiment, as shown in Figure 56B, the peelable portion 221 may be formed of release paper 235 that is formed separately from the peripheral wall portion 21. This form will be referred to as Modification 1 of the 11th embodiment. Figure 56B is a cross-sectional view illustrating the main part of the bag 10 according to Modification 1 of the 11th embodiment. Figure 56B shows a cross-sectional view of the bag according to Modification 1 of the 11th embodiment corresponding to the cross-sectional view in Figure 55B. Note that in Figure 56B, for the convenience of explanation, the adhesive surface 223 and the small piece opposing surface 224 are shown separated. When the bag 10 is not in use, it is preferable that the adhesive surface 223 and the small piece opposing surface 224 are bonded 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 the backing paper 236. The release layer 228 forms the surface 224 facing the small piece portion. The peelable portion 221 shown in Figure 56B is formed by adhering the release paper 235 to the peripheral wall portion 21 with the surface of the backing paper 236 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 will be described later, the release paper 235 may be adhered to the backing material that fixes the handle member to the bag body 10.

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

[0196] Similar to the first modification, the adhesive piece 230 has a predetermined portion at one end bonded to the wall portion 25 (the first wall portion 25A in the example of Figure 56A), and the portion at the other end that is not bonded to the wall portion 25 and extends from the wall portion 25 forms a small piece portion 220. However, the bonding surface between the fixing portion of the adhesive piece 230 and the wall portion 25 is a different surface from the surface on which the adhesive adhesion surface 223 is formed.

[0197] The release paper 235 has a structure in which a release layer 228 is formed on at least one surface of the backing paper 236, similar to the second modified example. However, the surface of the release paper 235 that is opposite to the surface 224 facing the small piece portion, which is the surface on which the release layer 228 is formed, is adhered to the adhesive element 230. At this time, the release paper 235 is adhered to the surface of the adhesive element 230 that forms the adhesive adhesion surface 223. With at least the release paper 235 adhered to the bag body 10 via the adhesive element 230, the release paper 235 forms a peelable portion 221.

[0198] Before the state in which the opening 24 of the bag 10 is restricted from expanding, which is the state in which the bag 10 is not in use, the adhesive element 230 is bent so that the adhesive surface 223 of the small piece portion 220 of the adhesive element 230 faces the surface 224 of the peelable portion 221, similar to the modification 1, etc. Furthermore, the adhesive element 230 is adhered to the surface 224 of the small piece portion at the adhesive surface 223 so that it can be peeled off again.

[0199] (Formation of a state in which the expansion of the opening 24 is restricted) In the bag body 10 according to the 3rd modified example of the 11th embodiment, as shown in Figures 58A to 58C, 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 off from the peelable portion 221.

[0200] In the third modification of the eleventh embodiment, as shown in Figure 58C and the like, the small piece portion 220 of the adhesive piece 230 is bent so that the adhesive surface 223 faces the outer surface of the wall portion 25 (second wall portion 25B in Figure 56C) that is opposite to the wall portion 25 connected to the small piece portion 220 (first wall portion 25A in Figure 58C). Then, the adhesive surface 223 of the small piece portion 220 is bonded to the wall portion 25. At this time, movement that separates the first wall portion 25A and the second wall portion 25B, which are the wall portions 25, is prevented, thus creating a state in which the expansion of the opening 24 is restricted.

[0201] (Modification 4) In the bag according to Modification 2 of the 11th 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, the adhesive piece is adhered to the outer surface side of the peripheral wall, and the release paper is adhered to the inner surface side of the peripheral wall. This form is referred to as Modification 4 of the 11th embodiment. Figures 59A to 59D show diagrams illustrating the main parts of the bag 10 according to Modification 4 of the 11th embodiment.

[0202] In the modified example 4 of the eleventh embodiment, the bag body 10 has a small piece portion 220 with a structure similar to the small piece portion 220 shown in modified example 1, and the peelable portion 221 has a structure similar to the peelable portion 221 shown in modified example 2, so a detailed explanation is omitted.

[0203] In the case of the bag 10 according to Modification 4 of the 11th embodiment, when the bag 10 is not in use (before a state is formed in which the expansion of the opening 24 is restricted), the adhesive element 230 is bent so that the adhesive surface 223 of the small piece portion 220 of the adhesive element 230 faces the surface 224 of the peelable portion 221, and the adhesive surface 223 is adhered to the adhesive surface 223 in a manner that allows for re-peelability.

[0204] (Formation of a state in which the expansion of the opening 24 is restricted) In the bag body 10 according to the 4th modified example of the 11th embodiment, as shown in Figures 60A to 60C, 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 off from the peelable portion 221.

[0205] In the 4th modification of the 11th embodiment, as shown in Figure 60C, etc., the small piece portion 220 of the adhesive piece 230 is bent so that the adhesive surface 223 faces the outer surface of the wall portion 25 (second wall portion 25B in Figure 60C) that is opposite to the wall portion 25 connected to the small piece portion 220 (first wall portion 25A in Figure 60C). Then, the adhesive surface 223 of the small piece portion 220 is bonded to the wall portion 25. At this time, movement that separates the first wall portion 25A and the second wall portion 25B of the wall portion 25 is prevented, thus creating a state in which the expansion of the opening 24 is restricted.

[0206] (Modification 5) In the bag body 10 according to the 11th embodiment, a handle member 250 may be provided, as shown in Figures 61A and 61B. This form will be referred to as Modification 5 of the 11th embodiment. Figures 61A and 61B are diagrams illustrating one embodiment of Modification 5 of the 11th embodiment. In the example of Figure 61, the handle member 250 is fixed to the inner surface of the bag body 10 (the inner surface of the main body 20) slightly below the upper end of the main body 20 by attaching a backing material 251 that fixes the handle member 250 to the bag body 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 part 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 gripping portion that can be grasped by the user. The shape of the handle member 250 is not particularly limited, and in the examples of Figures 61A and 61B, the handle member 250 is formed in a U-shape overall, but this is just one example. In the 5th modified example of the 11th embodiment, in the examples of Figures 61A and 61B, the release paper 235 is adhered to the bag body 10 in a position that avoids the backing material 251, so that the peelable portion 221 may be formed in a position that avoids the backing material 251. However, as shown in Figure 61C, at least a portion of the release paper 235 is adhered to the backing material 251, so that at least a portion of the peelable portion 221 may be formed in a region that overlaps with the backing material 251. Furthermore, the fact that at least a portion of the peelable portion 221 may be formed in a region overlapping with the backing material 251 also applies when the peelable portion 221 is not formed with release paper 235, and the release layer 228 is formed on the inner surface of the main body 20.

[0207] (Modification 6) In the bag according to the 11th embodiment, as shown in Figures 62A and 62B, a tab 241 configured to be grippable may be extended from the free end 227 side of the small piece portion 220. This form will be referred to as Modification 6 of the 11th embodiment. Figures 62A and 62B are diagrams illustrating the main parts of the bag 10 according to Modification 6 of the 11th embodiment. The dimensions and shape of the tab 241 extending from the free end 227 side of the small piece portion 220 are not particularly limited, but it is preferable that it be of a size and shape that can be grasped by the user with their fingers. It is also preferable that the tab 241 avoids the formation of an adhesive surface 223. In the bag according to the 11th 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 portion 220 to be adhered to the wall portion 25 in such a way that it restricts the expansion of the opening of the bag 10.

[0208] In the bag 10 according to the 6th modification of the 11th embodiment, as shown in Figures 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 Figures 63A and 63B, reference numeral 242 denotes the folded portion formed by folding the tab 241 upward. When the folded portion 242 is formed and the tip of the tab 241 is pointed upward, it is preferable that at least a part of the tab 241 is located above the upper end 225 of the peripheral wall portion 21 of the main body 20, as shown in Figures 63A and 63B. This configuration makes it easy to recognize the tab 241 from the outside of the bag 10. Figures 63A and 63B are diagrams illustrating the main parts of the bag 10 according to the 6th modification of the 11th embodiment. Furthermore, Modification 6 of the 11th embodiment may be applied to a bag 10 according to any of Modifications 1 to 5 of the 11th embodiment. For example, Figure 63C shows an example in which the configuration of Modification 6 of the 11th embodiment is applied to a bag 10 according to Modification 3 of the 11th embodiment. Figure 63C shows an example in which the tip of the tab 241 is pointed upward (an example in which a folded portion 242 is formed).

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

[0210] The bag 10 according to the reference example of the 11th embodiment has a bottom portion 22 and a peripheral wall portion 21 connected to the bottom portion 22 at the periphery of the bottom portion 22, and a main body 20 that forms a space portion 23 surrounded by the bottom portion 22 and the peripheral wall portion 21 and capable of storing contents, and an opening 24 into which the contents are inserted into the space portion 23. The peripheral wall portion 21 has a pair of opposing wall portions 25, which are a first wall portion 25A and a second wall portion 25B. The peripheral wall portion 21 has a small piece portion 220 having an adhesive surface 223 on which adhesive material is placed, and the small piece portion 220 has a fixed end 226 fixed to the peripheral wall portion 21 and a free end 227 that can be displaced relative to the peripheral wall portion 21. Furthermore, a peelable portion 221 is provided which allows the free end 226 of the small piece portion 220 to be rotated around the fixed end 226 as an axis, has a small piece portion facing surface 224 positioned to face the adhesive surface 223, and is re-peelable and adheres 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 11th embodiment, the position where the peelable portion 221 is provided is a position that avoids exposure to the outside of the main body 20. The small piece portion 220 is configured to be adhered to the peripheral wall portion 21 in the area of ​​the adhesive surface 223 in such a state that movement that separates the first wall portion 25A and the second wall portion 25B is prevented when at least a part of the small piece portion 220 is peeled from the peelable portion 221 and bent.

[0211] In the example shown in Figure 32, an adhesive placement section 179 for closing the opening 24 may be provided. The adhesive placement section 179 for closing the opening 24 is located on the upper end side of the peripheral wall 21 and on the inner surface 21A side of the peripheral wall 21. This adhesive placement section 179 can be exemplified by double-sided adhesive tape or the like.

[0212] [12. Twelfth Embodiment] The bag body 10 according to the twelfth embodiment may be provided with an inner surface bonding piece 253 and a peelable portion 254, as shown in the example in Figures 65A and 65B, in any of the bag bodies 10 from the first to the tenth embodiment. Figures 65A to 65B are diagrams illustrating one embodiment of the twelfth embodiment.

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

[0214] In the example shown in Figure 65, the peripheral wall portion 21 consists of a pair of opposing wall portions 25, which are conveniently referred to as the first wall portion 25A and the second wall portion 25B. In other words, the first wall portion 25A and the second wall portion 25B are specified only for the sake of explanation, and the terms first wall portion 25A and second wall portion 25B may be interchanged.

[0215] The peelable portion 254 is the same as the peelable portion 221 described in the description of the 11th embodiment, so a detailed explanation will be omitted. In the example of Figure 65, the peelable portion 221 may be formed of a release paper 235 that is formed separately from the peripheral wall portion 21, as described in the description of Modification 2 of the 11th embodiment. The release paper 235 has a structure in which a release layer 228 is formed on at least one surface of the backing paper 236. In the peelable portion 254, the surface of the peelable portion 254 that faces the adhesive adhesion surface 223 is referred to as the opposing surface 255.

[0216] (Internal Joining Piece) In the bag body 10 according to the twelfth embodiment, an internal joining piece 253 is attached to the peripheral wall portion 21. The internal joining piece 253 is joined to the inner surface of the peripheral wall portion 21 and is positioned below the upper end of the peripheral wall portion 21 regardless of whether the opening 24 is open or closed (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 which of the two is used as the reference). Except for this, the configuration of the internal joining piece 253 will be described using the same reference numerals and names as used for the configuration of the adhesive piece 230. In the example in Figure 65, the internal joining piece 253 is shown to be a member having a structure in which an adhesive layer 222 is provided on at least one side of a base sheet 231 for the adhesive piece, similar to the adhesive piece 230.

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

[0218] In the twelfth embodiment, as shown in Figure 65A, the bag 10 has an inner bonding piece 253, which is formed separately from the peripheral wall 21, bonded to the peripheral wall 21. When not in use, the adhesive surface 223 is in contact with the opposing surface 255. When in use, as shown in Figures 66A to 66D, the adhesive surface 223 and the opposing surface 255 are separated, and the adhesive surface 223 is bonded to the inner surface of the second wall 25B. This restricts the expansion of the opening 24.

[0219] Furthermore, it is preferable that a predetermined gap is left between the fixed end 253A and the area where the adhesive adhesion surface 223 is formed in the inner bonding piece 253. In this case, it is preferable that the gap between the fixed end 253A and the area where the adhesive adhesion surface 223 is formed is larger than the thickness of the inner bonding piece 253. With such a size, after the adhesive adhesion surface 223 is bonded to the inner surface of the second wall portion 25B, deformation that causes a slight lateral shift between the second wall portion 25B and the first wall portion 25A near the opening 24 of the bag body 10 can be allowed, and it is possible to correct the positional misalignment between the second wall portion 25B and the first wall portion 25A.

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

[0221] [13 Thirteenth Embodiment] [13-1 Structure] The bag body 10 according to the thirteenth embodiment, as shown in the examples in Figures 67A and 67B, is configured such that the main body 20 of the bag body 10 of the first to twelfth embodiments is composed of a folded structure 260, and the folded structure 260 is provided with side-end adhesive portions 261 to satisfy specific conditions. Figures 67A to 67B are diagrams illustrating one embodiment of the thirteenth embodiment.

[0222] The bag according to the 13th embodiment has a main body 20. The main body 20 has a bottom portion 22 and a peripheral wall portion 21 connected to the bottom portion 22 at its periphery. The peripheral wall portion 21 has a pair of opposing wall portions 25 and a pair of opposing side wall portions 26. In the peripheral wall portion, each wall portion 25 is connected to the side wall portion 26 at its side edge. In the example of Figure 67A, the peripheral wall portion 21 has a first wall portion 25A and a second wall portion 25B as a pair of opposing wall portions 25. The main body 20 forms a space portion 23 surrounded by the bottom portion 22 and the peripheral wall portion 21 and capable of storing contents, and an opening 24 into which the contents are inserted. In the examples of Figures 67A to 67B, an example is shown in which the peripheral wall portion 21 has a pair of opposing wall portions 25.

[0223] In the example shown in Figure 67, the peripheral wall portion 21 consists of a pair of opposing wall portions 25, which are conveniently referred to as the first wall portion 25A and the second wall portion 25B. In other words, the first wall portion 25A and the second wall portion 25B are specified only for the sake of explanation, and the terms first wall portion 25A and second wall portion 25B may be interchanged.

[0224] The main body 20 has at least one corner portion 28 on the inner surface of the peripheral wall portion 21 that extends from the bottom portion 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 portion 25 and the side wall portion 26, and a corner portion 28 is formed at each boundary position.

[0225] In addition, in the example shown in Figure 67, the position regulating 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 bent structure 260, the position regulating member 30 is joined to the inner surface of the bent structure 260.

[0226] (Folded Structure) The folded structure 260 that constitutes the main body 20 is a structure having a structure formed by folding a blank material 500, and is defined as a structure that forms structures corresponding to the peripheral wall portion 21 and the bottom portion 22. Here, the blank material 500 can be defined as a sheet material formed in a shape corresponding to the main body 20, as shown in Figure 67C. The blank material 500 is also formed from a paper-based material. Figure 67C is a plan view illustrating one embodiment of the blank material 500 that forms the folded structure 260, that is, the blank material 500 that forms the main body 20. The paper-based material that constitutes the blank material 500 may be a paper-based material that can be used as the material for 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, so a detailed explanation is omitted.

[0227] (Side End Adhesion Part) The bent structure 260 has a side end adhesion part 261 that adheres the first overlapping structure corresponding part 560A and the second overlapping structure corresponding part 560B, which will be described later, to each other. The side end adhesion part 261 can be formed in the same way as the blank material adhesion part 551 etc. described in the first embodiment, and is formed by adhering them to each other with an adhesive or the like. Furthermore, as shown in Figure 67A, the bent structure 260 has the first overlapping structure corresponding part 560A and the second overlapping structure corresponding part 560B positioned in order from the inner surface of the bent structure 260, and the inner surface of the first overlapping structure corresponding part 560A is exposed to the "internal space of the bent structure 260" which becomes the space 23 of the main body 20. The layout of the side end adhesive portion 261 is not particularly limited and may be formed in a striped pattern as shown in Figure 68B, a grid pattern, a dot pattern, or a wide area of ​​adhesive bonded surface as shown in Figure 68A (single-surface formation type).

[0228] (Blank material) The blank material 500 shown in the example in Figure 67C has an upper edge portion 563, a lower edge portion 564, and a pair of blank material side ends 565 (lateral side edge portions) as outer peripheral edges 562 when the thickness direction of the blank material 500 is the line of sight. In the blank material 500, a portion corresponding to the peripheral wall portion 21 (peripheral wall portion corresponding portion 502) and a portion corresponding to the bottom portion 22 (bottom portion corresponding portion 501) are defined.

[0229] The upper edge 563 of the blank material is the portion of the outer peripheral edge 562 that forms the opening 24 when the main body 20 is formed with the folded structure 260. The lower edge 564 of the blank material is the portion of the outer peripheral edge 562 that is formed on the opposite end side from the upper edge 563 of the blank material. The lower edge 564 of the blank material will be located at the bottom 22 when the main body 20 is formed with the folded structure 260. A pair of blank material side ends 565 are portions of the outer peripheral edge 562 that connect to the upper edge 563 and the lower edge 564 of the blank material, and the pair of blank material side ends 565 are located on opposite ends (in Figure 66C, they are separated in the longitudinal direction of the blank material 500). In the blank material 500, a pair of blank material side ends 565 consists of a first blank material side end 565A and a second blank material side end 565B.

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

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

[0232] As shown in Figures 67C and 68A, a planned facing area IVR exists at a predetermined position on the blank material 500. The planned facing area IVR is defined as the area on the blank material 500 where the position regulating member 30 is planned to face (be positioned).

[0233] In the blank material 500, at least one facing area IVR is defined to satisfy all three of the following conditions A, B, and C.

[0234] Condition A: The planned IVR area for face-to-face interaction is located in an area that avoids the second inward-facing area 566B.

[0235] Condition B: The opposing planned IVR area is the area that crosses the corner corresponding bending position 567.

[0236] Condition C: One of the two side edge EGPs of the facing planned region IVR is located in the first inward region 566A.

[0237] In the example shown in Figure 67C, the IVR in the planned face-to-face area satisfies three conditions A, B, and C.

[0238] (Process of forming a folded structure from a blank material) The formation of the folded structure 260 can be achieved, for example, by performing the process of folding the blank material 500 and the process of bonding it at predetermined parts, as shown below. In the example shown in Figure 67C, the blank material 500 is made up of a rectangular sheet. A position regulating member 30 is bonded to the facing area IVR of the blank material 500. In Figure 67, the position regulating member 30 is made up of a belt-shaped (strip-shaped) sheet, and the position regulating member 30 is bonded to the blank material 500 at both ends in its longitudinal direction. Using the blank material 500 to which the position regulating member 30 has been bonded, the process of folding the blank material 500 is performed.

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

[0240] Furthermore, the first overlapping structure corresponding portion 560A and the second overlapping structure corresponding portion 560B of the blank material 500 are superimposed. At this time, the first overlapping structure corresponding portion 560A is positioned 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 material 500, the first overlapping structure corresponding portion 560A and the second overlapping structure corresponding portion 560B of the blank material 500 are bonded to each other, thereby forming a side end bonding portion 261. At this time, the blank material 500 becomes a cylindrical structure 530. In the cylindrical structure 530, a position regulating member 30 is bonded to 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 portion 501) is bent inward. In examples such as Figures 67C and 68A, the bottom portion 501 has a first lower portion and a second lower portion. The first lower portion is defined as the portion of the bottom portion 501 that extends below the portion corresponding to the side wall (part 501A). There is one pair (two) of the first lower portion (part 501A). The second lower portion is defined as the portion of the bottom portion 501 that extends below the portion corresponding to the wall (part 501B). There is one pair (two) of the second lower portion (part 501A). In the blank material 500, the first lower portion and the second lower portion are arranged alternately.

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

[0244] [13-2 Function and Effects] In conventional bags, side-edge adhesive portions were formed at or near the corners. In this case, a problem was that it was difficult to place position-regulating members at the corners where the side-edge adhesive portions were formed.

[0245] According to the 13th embodiment of the bag, the positions where the side end adhesive portion and the position regulating member 30 are placed on the blank material 500 are determined to be specific positions, and by making the positions of the side end adhesive portion and the position regulating member 30 different, the side end adhesive portion can be formed and the position of the position regulating member 30 can be placed at the corner portion 28.

[0246] [13-3 Modified Examples] (Modified Example 1) For the bag body 10 according to the 13th embodiment, a specific blank material 500 as shown below may be used. That is, as the specific blank material 500, a blank material may be used in which the adhesive portion corresponding portion (A) and the bonding portion corresponding portion (B) are defined such that 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), as shown in Figures 68A and 68B. Here, in the blank material 500, the adhesive portion corresponding portion (A) is the portion of the first overlapping structure corresponding portion 560A that corresponds to the side end adhesive portion 261 (the portion indicated by reference numeral 571 in Figures 68A to 68B (the hatched portion)). The adhesive portion corresponding portion (B) is the portion of the blank material 500 that corresponds to the portion that joins the position regulating member 30 and the bending structure 260 (the portion facing the joining allowance portion 32 572). This form, which has an adhesive portion (A) and a bonding portion (B), will be referred to as Modification 1 of the 13th embodiment. Figures 68A and 68B are plan views illustrating one example of a blank material 500 forming a bag 10 according to Modification 1 of the 13th embodiment.

[0247] According to Modification 1 of the 13th Embodiment, when the process of bonding the first overlapping structure corresponding portion and the second overlapping structure corresponding portion using heat sealing or the like to form a side end bonding portion is carried out, heat sealing is also applied to the portion where the position regulating member and the blank material are joined, thereby creating a state in which the portion where the position regulating member and the blank material are joined is more strongly bonded.

[0248] The adhesive portion (A) and the attachment portion (B) may completely overlap, or a portion of the adhesive portion (B) may be included in the adhesive portion (A). The adhesive portion (B) may also be included in the adhesive portion (A). Furthermore, these do not prohibit the attachment portion (A) from being included in the adhesive portion (B).

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

[0250] (Modification 2) In the bag body 10 according to the 13th embodiment, a handle structure 252 may be provided on the main body 20, as shown in the examples in Figures 69A and 69B. This form is referred to as Modification 2 of the 13th embodiment. Figure 69A is a plan view illustrating one embodiment of the bag body 10 according to Modification 2 of the 13th embodiment. Figure 69B is a plan view illustrating one embodiment of the blank material 500 that forms the bag body 10 according to Modification 2 of the 13th embodiment.

[0251] The configuration in which the main body 20 is provided with a handle structure 252 is achieved by bonding the handle structure 252 to the folding structure 260.

[0252] The handle structure 252 shows a structure that combines the handle member 250 and the backing material 251. Since the same content as described in Modification 5 of the 11th embodiment can be applied to the handle member 250 and the backing material 251, a detailed explanation is omitted. From the external appearance of the main body 20, the handle member 250 is positioned so as to be partially exposed upward from the upper end of the peripheral wall portion 21, and the backing material 251 is positioned so as to cover the portion of the handle member 250 that faces the peripheral wall portion 21. The backing material 251 is bonded to the peripheral wall portion 21 and the handle member 250. The handle member 250 is also bonded to the peripheral wall portion 21 and the backing material 251.

[0253] (Blank Material) In the blank material 500 forming the bag body 10 according to the 2nd modified example of the 13th embodiment, a specific area is designated as the handle adhesive area 575, as shown in Figure 69C. Figure 69C is a plan view showing an example of the blank material 500 forming the bag body 10 according to the 2nd modified example of the 13th embodiment. The handle adhesive area 575 indicates the area in the blank material 500 to which the handle structure 252 will be bonded. In the blank material 500, it is preferable that the handle adhesive area 575 be designated as an area that does not cross the end ELN of the blank material side end 565 when the folded structure 260 is in its folded state. In the modified bag 10 according to the 13th embodiment, even if a handle structure 252 is provided on each of a pair of wall portions 25, and position regulating members 30 are provided on all corners 28 (or, if the bag 10 is formed in a box shape as shown in Figure 69, even if position regulating members 30 are provided on all four corners 28), the bent structure 260 can be formed by bending the blank material 500 with the position regulating members 30 and the handle structure 252 already joined to predetermined positions.

[0254] When the handle bonding area 575 is defined in this way, the handle structure 252 is bonded to the predetermined position while the blank material 500 is still in its blank state. In this case, the need to perform the step of positioning the handle structure 252 after forming the bent structure 260 is eliminated, thus simplifying the manufacturing process of the bag 10.

[0255] [14 Fourteenth Embodiment] [14-1 Configuration] The bag according to the fourteenth embodiment is as shown in the example in Figures 70A, 70B, and 70C, and in any of the first to thirteenth embodiments, the main body 20 is composed of a folded structure 260, and the folded structure 260 is provided with an overlapping structure (bottom side overlapping structure 580) and a lower end folded portion 581, which will be described later. Figures 70A to 70C are diagrams illustrating one embodiment of the thirteenth embodiment.

[0256] The bag according to the 14th embodiment has a main body 20. The main body 20 has a bottom portion 22 and a peripheral wall portion 21 connected to the bottom portion 22 at its periphery. The peripheral wall portion 21 has a pair of opposing wall portions 25 and a pair of opposing side wall portions 26. In the peripheral wall portion 21, each wall portion 25 is connected to the side wall portion 26 at its side edge. In the example of Figure 70A, the peripheral wall portion 21 has a first wall portion 25A and a second wall portion 25B as a pair of opposing wall portions 25. The main body 20 forms a space portion 23 surrounded by the bottom portion 22 and the peripheral wall portion 21 and capable of storing contents, and an opening 24 into which the contents are inserted. Figures 70A to 70C show an example in which the peripheral wall portion 21 has a pair of opposing wall portions 25.

[0257] In the example shown in Figure 70, the peripheral wall portion 21 consists of a pair of opposing wall portions 25, which are conveniently referred to as the first wall portion 25A and the second wall portion 25B. In other words, the first wall portion 25A and the second wall portion 25B are specified only for the sake of explanation, and the terms first wall portion 25A and second wall portion 25B may be interchanged.

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

[0259] In addition, in the example shown in Figure 70, the position regulating 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 bent structure 260, the position regulating member 30 is joined to the inner surface of the bent structure 260.

[0260] (Folded Structure) The folded structure 260 constituting the main body 20 is a structure having a structure formed by folding a blank material 500, and is defined as a part that forms a structure corresponding to the peripheral wall portion 21 and the bottom portion 22. The blank material 500 can be defined as a sheet material formed in a shape corresponding to the main body 20. The blank material 500 is also formed from a paper-based material. The paper-based material constituting the blank material 500 may be a paper-based material that is applicable 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, so a detailed explanation is omitted. In the example of Figure 70, the folded structure 260 has a side-end adhesive portion 261. The side-end adhesive portion 261 is a structural part in which a pair of blank material side ends 565 of the blank material 500 are bonded together. The layout of the side-end adhesive portion 261 is not particularly limited. Specifically, the side-end adhesive portion 261 may be configured in the same way as the side-end adhesive portion described in the 13th embodiment.

[0261] In the bag body 10 according to the 14th embodiment, the folded structure 260 constituting the main body 20 has a first inner folded portion 582 and a second inner folded portion 583, and a bottom-side overlapping structure portion 580 which is an overlapping structure portion formed in the portion corresponding to the bottom portion 22. In addition, in the folded structure 260, at least one lower end folded portion 581 of a pair of the second inner folded portions 583 is formed, and at least a part of the lower end folded portion 581 is positioned in the bottom-side overlapping structure portion 580 (located in the bottom-side overlapping structure portion 580).

[0262] (First Inner Fold) The first inner fold 582 is defined as the part that forms a structure in which the first lower part (part 501A) of the blank material 500, which will be described later, is folded inward into the folded structure 260. Two (a pair) first lower parts are defined in the blank material 500, and a pair of first inner folds 582 are formed in the folded structure 260.

[0263] (Second Inner Fold) The second inner fold 583 is defined as a portion that forms a structure in which the second lower portion (part 501B) of the blank material 500, described later, is folded inward into the folded structure 260. In the example shown in Figure 70, the second inner fold 583 is a structure in which the second lower portion is folded on the lower side of the first lower portion (so as to cover the lower side portion of the first lower portion or the entire lower side of the first lower portion). Two (a pair) second lower portions are defined in the blank material 500, and a pair of second inner folds 583 are formed in the folded structure 260.

[0264] (Diagonal Fold) In the example of the folded structure 260 shown in Figure 70, the second inner fold 583 forms a diagonal fold 584. The diagonal fold 584 is defined as a structural part in which the blank material 500 is folded back using a straight line extending diagonally with respect to the lower edge of the lower side edge 564 of the blank material as the folding axis. The diagonal fold 584 is formed to overlap the side end portion of the second inner fold 583, and in Figure 70, the diagonal fold 584 is formed such that the side end portion of the second inner fold 583 has a diagonally inclined shape. That is, in the example of the bag body 10 shown in Figure 70, the folded structure 260 is configured such that the width of the second inner fold 583 decreases from the base end of the second inner fold 583 toward the lower end of the lower side edge 564 of the blank material. Furthermore, in the example shown in Figure 70, the second inward-folded portion 583 is connected to the first inward-folded portion 582 at the edge of the diagonal-folded portion 584. That is, the outer edge of the diagonal-folded portion 584 and the outer edge of the first inward-folded portion 582 are common to each other.

[0265] (Lower end folded portion) A lower end folded portion 581 is formed on at least one of the second inward folded portions 583 by folding back a predetermined portion of the lower edge portion 564 of the blank material. The lower end folded portion 581 may be a portion folded inward toward the inside of the bent structure 260 (a portion folded inward), or a portion folded outward toward the outside of the bent structure 260 (a portion folded outward). In the example shown in Figure 70, a 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 inward toward the inside of the bent structure 260". At least a part of the lower end folded portion 581 is located in the bottom overlapping structure portion 580. That is, at least a part of the lower end folded portion 581 is located in the bottom overlapping structure portion 580. In the example shown in Figure 70, the entire lower end folded portion 581 is positioned within the bottom overlapping structure portion 580.

[0266] (Bottom overlapping structure) The bottom overlapping structure 580 is defined as an overlapping structure in which a pair of the second inward folding parts 583 overlap each other in a plan view of the main body 20.

[0267] (Blank Material) The blank material 500 shown in the example in Figure 71A has an upper edge 563 and a lower edge 564 as the outer peripheral edge 562 when the thickness direction of the blank material 500 is the line of sight direction. In the blank material 500, the outer peripheral edge 562 represents a predetermined portion of the blank material 500 that includes the outer peripheral edge, which is defined as "a predetermined portion from the position of the outer peripheral edge to a position slightly inward from that outer peripheral edge". In the blank material 500, a peripheral wall corresponding portion 502 is defined in the portion corresponding to the peripheral wall portion 21, and a bottom corresponding portion 501 is defined in the portion corresponding to the bottom portion 22. In addition, in the blank material 500 shown in the example in Figure 71A, there is a pair of blank material side ends 565. Figure 71A is a plan view showing an example of a blank material 500 for forming a bag body 10 according to the 13th embodiment. Note that Figure 71A shows an example in which a blank material having the configuration described in the 13th embodiment is used. The same applies to Figure 73A.

[0268] The upper edge 563 of the blank material, the lower edge 564 of the blank material, and the pair of blank material side ends 565 can be defined in the same way as described in the 13th embodiment. That is, the upper edge 563 of the blank material is the portion of the outer peripheral edge 562 that forms the opening 24 when the main body 20 is formed with the bent structure 260. The lower edge 564 of the blank material is the portion of the outer peripheral edge 562 that is formed on the opposite end side from the upper edge 563 of the blank material. The lower edge 564 of the blank material is the portion of the outer peripheral edge 562 that will be located at the bottom 22 when the main body 20 is formed with the bent structure 260. The pair of blank material side ends 565 are portions of the outer peripheral edge 562 that connect to the upper edge 563 and the lower edge 564 of the blank material, and are located on opposite ends from each other. In the blank material 500, a set of blank material side ends 565 is provided, consisting of a first blank material side end 565A and a second blank material side end 565B.

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

[0270] (Process of forming a folded structure from a blank material) The formation of the folded structure 260 can be achieved, for example, by performing the process of folding the blank material 500 and the process of bonding it at predetermined parts, as shown below. In the example shown in Figure 71A, the blank material 500 is made up of a rectangular sheet. A position regulating member 30 is bonded to a predetermined position on the blank material 500. In Figure 71A, the position regulating member 30 is made up of a belt-shaped (strip-shaped) sheet, and the position regulating member 30 is bonded to the blank material 500 at both ends in its longitudinal direction. Using the blank material 500 to which the position regulating member 30 is bonded, the process of folding the blank material 500 is performed.

[0271] The blank material 500 has a corner-corresponding bending position 567 defined as the position where the blank material 500 is bent at the portion corresponding to the corner 28. In the process of bending the blank material 500, the blank material 500 is bent at the corner-corresponding bending position 567 (bent in the direction of arrow F1 in Figure 71). In the example in Figure 71A, the corner-corresponding bending position 567 is defined at the portion corresponding to the corner 28 (position PU1 in Figure 71A), as described in the 13th embodiment. Position PU2 shown in Figure 71A is the same as described in the 13th embodiment.

[0272] Furthermore, in the process of bonding the blank material 500, the two blank material side ends 565 of the blank material 500 are overlapped, and the blank material side ends 565 are bonded to each other in a predetermined area of ​​the overlapping portion of the two blank material side ends, thereby forming a side end bonding portion 261. At this time, as shown in Figure 71B, the blank material 500 becomes a cylindrical structure 530. Figure 71B is a schematic perspective view showing an example of the cylindrical structure 530.

[0273] The portion of the cylindrical structure 530 corresponding to the bottom 22 (bottom-corresponding portion 501) is folded inward, as shown in Figures 71B, 72A, and 72B. Figures 72A and 72B are perspective views illustrating the process of folding the bottom-corresponding portion 501 of the cylindrical structure 530.

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

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

[0276] Then, the second lower portion (part 501B) is folded inward (towards the center of the cylindrical structure (direction of arrow F2)). Each of the pair of second lower portions is folded. At this time, as shown in Figure 70C, a pair of second inward folded portions 583 is formed as a structure formed by folding the pair of second lower portions. At this time, a portion where portion 501A and portion 501B overlap and a portion where the two portions 501B overlap are formed. The overlapping portion of the two portions 501B (i.e., the portion where the pair of second inward folded portions 583 overlap each other) becomes the bottom overlapping structure portion 580. In the example of Figure 70C, in a plan view of the folded structure 260, the lower end folded portion 581 is located in the bottom overlapping structure portion 580.

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

[0278] [14-2 Function and Effects] In conventional bags, it was required to increase the strength of the bottom. Increasing the strength of the bottom is important because it makes it less likely for the bottom to lose its shape or tear when heavy contents such as beverage containers are placed in the space of the bag.

[0279] In the bag according to the 14th embodiment, a lower overlapping structure portion 580 is formed in the folded structure 260 constituting the main body 20 in the portion corresponding to the bottom 22, and a lower end folded portion 581 is also formed. As a result, the structure of the bottom 22 becomes stronger. Therefore, in the bag according to the 14th embodiment, deformation of the bottom 22 and tearing of the bottom can be made less likely.

[0280] [14-3 Modified Forms] (Modified Form 1) In the bag 10 according to the 14th embodiment, as shown in Figure 73B, the diagonal fold portion 584 of the second inward fold portion 583 may be omitted. This form will be referred to as Modified Form 1 of the 14th embodiment. Figure 73B is a bottom view to explain the bottom portion 22 in one embodiment of the bag 10 of Modified Form 1 of the 14th embodiment. Modified Form 1 of the 14th embodiment can be specifically realized, for example, as shown in Figure 73A, by dividing the blank material 500 into a first lower portion (part 501A) and a second lower portion (part 501B) by a cut 585 or the like. When the first lower portion and the second lower portion are separated, the first inward fold portion 582 and the second inward fold portion 583 can be formed in a separated state.

[0281] [14-4 Reference Example] In the bag body 10 according to the 14th embodiment, the folded structure described above in the bag body 10 obtained by omitting the position regulating member from each of the bag bodies of the first to 13th embodiments (i.e., the bag body 10 consisting only of the main body 20 as shown in Figure 31) may be provided with an overlapping structure and a lower end folded portion, which will be described later (reference example). In the reference example, as shown in Figure 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 located on the upper end side of the peripheral wall portion 21 and on the inner surface 21A side of the peripheral wall portion 21. The adhesive placement portion 179 can be exemplified by double-sided adhesive tape or the like.

[0282] [15. Fifteenth Embodiment] [15-1. Configuration] The bag according to the fifteenth embodiment, as shown in the examples in Figures 74A, 74B, 74C, and 74D, in any of the bag bodies from the first to the fourteenth embodiments, at least in the second shape state ST2, the position regulating member 30 has a folded structure portion 590 on the regulating wall portion 31. Figures 74A, 74B, 74C, and 74D are diagrams illustrating one embodiment of the fifteenth embodiment. The other configurations, excluding the folded structure portion 590, may be the same as those of the bag bodies from the first to the fourteenth embodiments. Therefore, the explanation of the other configurations of the position regulating member 30, excluding the folded structure portion 590, is omitted.

[0283] (Folded structure) In the second shape state ST2, the position regulating member 30 has a folded structure 590 formed on the regulating wall portion 31. The position and shape of the folded structure 590 are not particularly limited. In the example of Figure 74, the folded structure 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 from being formed in the portion facing the side wall surface portion 26. It does not prohibit the folded structure 590 from being formed in the portion facing the wall surface portion 25 and the portion facing the side wall surface portion 26. Furthermore, it does not prohibit the folded structure 590 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] As shown in Figures 74A and 74D, the position regulating member 30 is configured such that when the shape is changed from the second shape state ST2 to the first shape state ST1, the folded structure portion 590 can change shape from a folded state to an unfolded state. The folded state refers to the state in which the folded structure portion 590 is folded, as shown in Figure 74A, etc. The folded structure of the folded structure portion 590 is a structure in which at least a portion of the area of ​​the position regulating member 30, among the surfaces of the folded structure portion 590 located on the side of the small space portion 33, face each other. The unfolded state refers to the state in which the folded structure portion 590 is displaced toward the inside of the space portion 23 from the folded state ("released from the folded state"), as shown in Figure 74D, etc. In Figure 74A, the shape deformation between the folded state and the unfolded state can be achieved by displacing the regulating wall portion 31 in the direction of arrow T.

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

[0286] The number of folded structures 590 formed on each position-regulating member 30 may be one, as shown in the example in Figure 75A, or two or more may be formed. In the example in Figure 75B, a position-regulating member 30 is shown in which three folded structures 590 are formed on the regulating wall portion 31 (one of the four position-regulating members 30 shown in Figure 75 has three folded structures 590 formed on it). Figures 75A and 75B are plan views illustrating examples of the formation of the folded structures 590. Note that in Figures 75A and 75B, for the sake of explanation, the thickness of the main body 20 and the position-regulating member 30 is omitted, and the detailed structure of the main body 20 (for example, the structure of the bottom portion 22) is also omitted. The same applies to Figures 76 and 77.

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

[0288] If there are multiple folded structures 590 formed on each position-regulating member 30, the structures of the formed folded structures 590 may be the same shape or different. In the example of Figure 74A, two folded structures 590 are formed, and the shape of each folded structure 590 is formed in a Z shape that is opposite to each other when viewed from above (with the vertical direction as the line of sight) of the bag body 10.

[0289] In the example shown in Figure 74A, the position regulating member 30 that forms the folded structure portion 590 is a position regulating member 30 located at the corner portion 28. This is just one example, and as shown in Figure 73, the position regulating member 30 on which the folded structure portion 590 is formed may be a position regulating member 30 located at a position on the inner surface of the peripheral wall portion 21, excluding the corner portion 28, as shown in the examples in Figures 76A and 76B. Figure 76A shows an example where multiple folded structures 590 are formed on the position regulating member 30, and Figure 76B shows an example where one folded structure portion 590 is formed on the position regulating member 30.

[0290] In the example shown in Figure 74A, the position regulating member 30 was a sheet material formed in a strip shape, but the shape of the sheet material forming the position regulating member 30 is not limited to this. The shape of the sheet material forming the position regulating member 30 may be a fan-shaped sheet material, as shown in Figures 77A to 77C. In this case as well, by forming the folded structure portion 590, it becomes easy to put the position regulating member 30 into the second shape state. Furthermore, when the position regulating member 30 is in the shape of the sheet material, if the position regulating member 30 is in the second shape state, it becomes possible to make the regulating wall portion 31 of the position regulating member 30 a curved surface that is inclined diagonally upward, making it easy to make the regulating wall portion 31 of the position regulating member 30 conform well to the shape of a container such as a coffee cup. Figure 77A is a plan view showing an example of the position regulating member 30. Figure 77B is a plan view for explaining a bag 10 provided with the position regulating member 30 shown in Figure 77A. Figure 77C is a cross-sectional view showing the state of the section along the line H2-H2 in Figure 77B.

[0291] [15-2 Function and Effects] Conventional bags require the ability to accommodate large items, such as containers, within a small space. In this case, it is necessary to use large-sized position-regulating members, but since there is a limited area on the inner surface of the peripheral wall where position-regulating members can be installed, there have been constraints on the dimensions of the position-regulating members installed on the inner surface of the peripheral wall.

[0292] According to the bag body of the 15th embodiment, the position regulating member 30 can expand the small space 33 compared to the case where the folded structure 590 is omitted, as the folded structure 590 is gradually released as the bag transitions from the second shape state ST2 to the first shape state ST1. Therefore, it is possible to expand the small space 33 without expanding the area used to install the position regulating member 30 on the inner surface of the peripheral wall 21.

[0293] [16. Sixteenth Embodiment] In the bag body 10 according to the first to fifteenth embodiments, as shown in Figures 78A and 78B, the peripheral wall portion 21 has a first wall portion 25A and a second wall portion 25B as a pair of opposing wall portions 25, and at least one of the position regulating members 30 may be fixed to the wall portion 25. Such an embodiment of the bag body 10 will be referred to as the sixteenth embodiment. Figures 78A and 78B are diagrams illustrating 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 Figure 17A, a part of the position regulating member 30 is joined to one wall portion 25 (the first wall portion 25A), and the other part of the position regulating member 30 is joined to the other wall portion 25 (the second wall portion 25B).

[0294] In the examples of Figures 78A and 78B, one position restricting member 30 is provided, but multiple position restricting members 30 may be arranged at different positions in the vertical direction, as shown in Figure 78C. Furthermore, when multiple position restricting members 30 are provided at different positions in the vertical direction, they may be in contact with each other or separated, as shown in Figure 78C. Also, the multiple position restricting members 30 may be 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 the container 200, etc. Also, even if the container 200 has a special shape in part, the multiple position restricting members 30 can be arranged so that the part with the special shape is not in contact with the multiple position restricting members 30, thereby enabling the movement of the container 200 to be restricted by the multiple position restricting members 30. Note that such arrangement of multiple position restricting members 30 may be applied to any of the first to sixteenth embodiments.

[0295] When multiple position regulating members 30 are provided, as shown in Figure 79B, at least one other position regulating member 30 may be joined to the regulating wall portion 31 of at least one of the position regulating members 30. In this case, the system can be configured so that the displacement of one position regulating member 30 induces the displacement of the other position regulating members 30, and the state of the other position regulating members 30 can be deformed by deforming the state of one position regulating member 30.

[0296] In the example shown in Figure 78A, the position regulating member 30 is formed in a roughly V-shape when viewed from above (with the Z-axis direction as the line of sight) of the bag 10. One end of the position regulating member 30 is joined to one wall surface 25 (first wall surface 25A), and the other end of the position regulating member 30 is joined to the other wall surface 25 (second wall surface 25B). However, the shape of the position regulating member 30 is not limited to this when viewed from above of the bag 10. For example, the position regulating member 30 may be formed in a W-shape (not shown), or in an annular shape (Figure 79A). The shape of the position regulating member 30 includes any shape that allows one end edge (joining portion 32) of the position regulating member 30 to be joined to one wall surface 25 and the other end edge (joining portion 32) of the position regulating member 30 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 when the peripheral wall portion 21 of the bag body 10 has a side wall portion 26, and the position regulating member 30 is joined to the wall portion 25 and the side wall portion 26, the shape of the position regulating member 30 in plan view of the bag body 10 may be formed in a W shape, an annular shape, or the like. The shape of the position regulating member 30 includes any shape that allows a part of the position regulating member 30 to be joined to the wall portion 25 (first wall portion 25A) and the other end edge of the position regulating member 30 to be joined to the other wall portion (second wall portion 25B).

[0297] In the bag 10 according to the 16th embodiment, the peripheral wall portion 21 of the main body, as shown in examples such as Figures 78A and 79B, has a pair of opposing wall portions 25 and a pair of opposing side wall portions 26, with each wall portion 25 connected to the side wall portion 26 at its side edge, and the bottom portion 22 forms a planar, widening portion. However, this is just one example, and in the bag 10 according to the 16th embodiment, as shown in examples such as Figures 80A and 80B, the peripheral wall portion 21 of the main body 20 may have a structure in which the side edges of the wall portions 25 are joined to each other (a structure in which the side wall portions 26 are omitted). In the example of Figure 80B, the bottom...

Claims

1. A bag comprising a bottom portion and a peripheral wall portion connected to the bottom portion at its periphery, the bag having a main body that forms a space enclosed by the bottom portion and the peripheral wall portion and capable of storing contents, and an opening into which the contents are inserted into the space, the main body being provided with a position regulating member having a regulating wall portion that restricts the movement of the contents within the space, the position regulating member being joined to at least the inner surface of the peripheral wall portion, and when the contents are placed in the space portion such that their movement is restricted by the regulating wall portion, and the surface of the regulating wall portion facing the contents is designated as the facing surface, the regulating wall portion is configured to be able to form 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 inner surface of the peripheral wall portion has at least one corner portion extending from the bottom portion toward the opening portion, and when the regulating wall portion is in the second shape state, the position regulating member covers at least a portion of at least one of the corner portions, as described in claim 1.

3. The bag body according to claim 2, wherein the peripheral wall portion has a pair of opposing wall portions and a pair of opposing side wall portions, each of the wall portions is connected to the side wall portion at its side edge, and the corner portion is formed at the boundary position between the wall portion and the side wall portion.

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

5. The bag according to 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 has a main body gusset portion formed thereon 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 within the space.

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

8. The bag according to claim 1, wherein the second shape state is a state in which the regulating wall portion has a convex surface formed on the facing surface such that it is aligned with the inner surface of the peripheral wall portion.

9. The bag according to claim 1, wherein the position regulating member has an intervening wall that contacts 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 claim 9, wherein when the restricting wall portion is in the second shape state, the lower end of the restricting wall portion is located above the lower end of the intervening wall.

11. The bag according to claim 10, wherein a gap space is formed between the intervening wall and the peripheral wall portion.

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

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

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

15. The bag according to claim 1, wherein the peripheral wall portion has a pair of opposing wall portions, and when the pair of wall portions are a first wall portion and a second wall portion, a lid portion is formed at the upper end of the first wall portion so as to be able to cover the upper end of the second wall portion, and the lid portion is provided with an adhesive placement portion where an adhesive that can be adhered to the second wall portion is placed when the upper end of the second wall portion is covered by the lid portion.

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

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

18. The bag according to claim 15, wherein the first wall portion is provided with a weakening portion at a position avoiding the lid portion, or in a portion of the lid portion avoiding the adhesive placement portion.

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

20. The bag body according to claim 1, wherein the main body is made of 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 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 portion of the upper end of the regulating wall and the outer surface of the container.

23. The bag according to claim 1, wherein the second shape state is a state in which the facing surfaces form a convex surface.

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

25. The bag according to 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 in a direction toward the peripheral wall portion from the boundary position between the inner bottom portion and the regulating wall portion.

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

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

28. The main body comprises a bottom portion and a peripheral wall portion connected to the bottom portion at its periphery, forming a space enclosed by the bottom portion and the peripheral wall portion and capable of storing contents, and an opening into which the contents are inserted into the space, wherein the peripheral wall portion has a first wall portion and a second wall portion as a pair of opposing wall portions, and an adhesive member having a first adhesive surface forming portion and a second adhesive surface forming portion is attached to the outer surface of the peripheral wall portion, the first adhesive surface forming portion is attached to a predetermined area of ​​the outer surface of the first wall portion, and when a bent structure is formed by bending the first wall portion and the second wall portion so that the outer surface of the first wall portion and the outer surface of the second wall portion face each other with a predetermined portion on the upper end side of the first wall portion and a predetermined portion on the upper end side of the second wall portion overlapped, at least a part of the second adhesive surface forming portion is configured to be adhesive to the outer surface of the second wall portion. If the aforementioned bending structure is not formed, the second adhesive surface forming portion avoids adhesion to the outer surface of the peripheral wall portion, in a bag-like body.

29. The bag according to claim 28, wherein when the second adhesive surface forming portion is bonded to the peripheral wall portion, it is configured to form a grippable gap between the first peripheral wall portion forming portion that forms the bending structure and the second peripheral wall portion forming portion excluding the first peripheral wall portion forming portion.

30. When the bending structure is formed, the second adhesive surface forming portion is configured to be adhesive to the first wall portion and the second wall portion, the bag body according to claim 28.

31. The bag according to claim 28, wherein the bending structure is defined by the portion in which the first wall portion and the second wall portion are bent toward the second wall portion such that the outer surface of the first wall portion and the outer surface of the second wall portion face each other.

32. The bag according to claim 28, wherein the bending structure is defined by the portion in which the first wall portion and the second wall portion are bent toward the first wall portion such that the outer surface of the first wall portion and the outer surface of the second wall portion face each other.

33. The bag body according to claim 28, wherein the opening is concealed in the bending structure.

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

35. The bag according to claim 34, wherein the release member is configured to avoid complete separation from the adhesive member.

36. The container has a base and a peripheral wall portion connected to the base at the periphery of the base, and has a main body that forms a space enclosed by the base and the peripheral wall portion and capable of storing contents, and an opening into which the contents are inserted into the space, wherein the peripheral wall portion has a first wall portion and a second wall portion as a pair of opposing wall portions, and a seal sheet having a seal member with an adhesive surface forming portion attached to the outer surface of the peripheral wall portion is detachably provided, and when a bent structure is formed by bending the first wall portion and the second wall portion so that the outer surface of the first wall portion and the outer surface of the second wall portion face each other when a predetermined portion on the upper end side of the first wall portion and a predetermined portion on the upper end side of the second wall portion are overlapped, the seal member is positioned to straddle the lower end of the bent structure and is configured to be able to adhere to the peripheral wall portion with the adhesive surface forming portion facing the first wall portion and the second wall portion, A bag body configured such that, when the sealing member is adhered to the peripheral wall, a grippable gap can be formed between the first peripheral wall forming portion that forms the bending structure and the second peripheral wall forming portion excluding the first peripheral wall forming portion.

37. The bag according to claim 36, wherein the sealing member has a through hole, and the through hole is configured to allow the gap to be exposed through the through hole when the sealing member is adhered to the peripheral wall.

38. The container has a main body comprising a bottom portion and a peripheral wall portion connected to the bottom portion at its periphery, forming a space enclosed by the bottom portion and the peripheral wall portion that can store contents, and an opening into which the contents are inserted into the space, wherein the peripheral wall portion has a first wall portion and a second wall portion as a pair of opposing wall portions, the peripheral wall portion has a small piece portion having an adhesive surface on which adhesive material is placed, the small piece portion has a fixed end fixed to the peripheral wall portion and a free end that is displaceable relative to the peripheral wall portion, and at least the free end of the small piece portion can be rotated about the fixed end as an axis, and a peelable portion is provided which has a small piece portion facing surface at a position that can face the adhesive surface and which can be re-peelably adhered to the small piece portion at the small piece portion facing surface, the position in which the peelable portion is provided is a position that avoids exposure to the outside of the main body, A bag body configured such that, with at least a portion of the small piece portion detached from the peelable portion and bent, the small piece portion can be adhered to the peripheral wall portion in the area of ​​the adhesive-bonded surface in such a way that movement separating the first wall portion and the second wall portion is prevented.

39. The bag according to 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 portion.

40. The bag according to claim 38, wherein the peelable portion is formed separately from the peripheral wall portion and is made of release paper.

41. The bag according to claim 40, wherein an adhesive element formed separately from the peripheral wall is adhered to the peripheral wall, a part of the adhesive element forms the small piece, and the release paper has the side opposite to the small piece adhered to the adhesive element.

42. The bag according to claim 40, wherein an adhesive element formed separately from the peripheral wall is adhered to the peripheral wall, a part of the adhesive element forms the small piece, the adhesive element is adhered to the outer surface of the peripheral wall, and the release paper is adhered to the inner surface of the peripheral wall.

43. The bag according to claim 38, wherein the small pieces and the peelable portions are provided at multiple locations, and each peelable portion is provided at a position corresponding to each of the small pieces.

44. The bag body according to claim 38, wherein a tab configured to be grippable is extended from the free end of the small piece portion.

45. The main body has at least one corner portion on the inner surface of the peripheral wall portion extending from the bottom portion toward the opening, the main body is composed of a folded structure made 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, 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 to the upper edge portion of the blank material, and has a first blank material side end portion and a second blank material side end portion that are located on opposite ends to each other and connected to the upper edge portion and the lower edge portion of the blank material, and has a first overlapping structure corresponding portion defined by a predetermined portion of the first blank material side end portion and a second overlapping structure corresponding portion defined by a predetermined portion of the second blank material side end portion as overlapping structure corresponding portions for joining a predetermined portion inside from the first blank material side end portion and a predetermined portion inside from the second blank material side end portion to each other, The bag according to claim 1, wherein the folded structure has side-edge bonding 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 side of the folded structure, and in the blank material, the area that is intended to face the position regulating member is designated as the intended facing area, the position where the blank material is folded at the portion corresponding to the corner is designated as the corner corresponding bending position, and the area of ​​the first overlapping structure corresponding portion that faces inward of the folded structure is designated as the first inward-facing area, and the area of ​​the second overlapping structure corresponding portion that faces inward of the folded structure is designated as the second inward-facing area, and at least one of the intended facing area is an area that avoids the second inward-facing area, is an area that crosses the corner corresponding bending position, and is determined so that one of the two side edges of the intended facing area is located in the first inward-facing area.

46. ​​The bag according to claim 45, wherein in the blank material, the portion of the first overlapping structure corresponding portion corresponding to the side end adhesive portion is designated as the adhesive portion corresponding portion (A), and the portion corresponding to the portion that joins the position regulating member and the bending structure is designated as the adhesive portion corresponding portion (B), and 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 claim 45, wherein the main body has a handle structure bonded to the folded structure, and in the blank material, the area corresponding to the area to which the handle structure is bonded is defined as the handle bonding area, and the handle bonding area is defined as an area that does not cross the edge of the blank material side end when the folded structure is in place.

48. The peripheral wall portion has a pair of opposing wall surfaces and a pair of opposing side wall surfaces, and each of the wall surfaces is connected to the side wall surface at its side edge; the main body is composed of a folded structure made by folding a blank material made of a paper-based material, and the position regulating member is joined to the inner surface of the folded structure; the blank material has an upper side edge of the blank material that forms the opening, and a lower side edge of the blank material that is formed on the opposite end side from the upper side edge of the blank material; The folded structure has a pair of first inward folded portions, which are formed by folding a pair of first lower portions, determined from the lower end of each of the side wall portions of the blank material to the lower edge of the blank material, inward of the folded structure; and a pair of second inward folded portions, which are formed by folding a pair of second lower portions, determined from the lower end of each of the side wall portions of the blank material to the lower edge of the blank material, inward of the folded structure on the lower surface side of the first lower portions; and an overlapping structure portion, which is determined as the portion where the pair of second inward folded portions overlap each other; and a lower end folded portion is formed on at least one of the pair of second inward folded portions by folding back the lower edge of the blank material; and at least a part of the lower end folded portion is arranged in the overlapping structure portion. The bag body according to claim 1.

49. The bag according to claim 48, wherein the second inward-folded portion has a diagonal fold portion obtained by folding the blank material with a straight line extending diagonally with respect to the lower edge of the lower side edge of the blank material as the folding axis, the first inward-folded portion is connected to the diagonal fold portion of the second inward-folded portion, and the width of the second inward-folded portion decreases toward the lower end of the lower side edge of the blank material.

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

51. The bag body according to claim 1, wherein the peripheral wall portion has a first wall portion and a second wall portion as a pair of opposing wall portions, 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 insert is provided on the upper side of the bottom.

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

54. The bag body according to claim 53, wherein the insole material covers a predetermined area on the lower end side of the bottom and the peripheral wall.

55. The bag according to claim 1, wherein the peripheral wall portion has a pair of opposing wall portions and a pair of opposing side wall portions, and when the pair of wall portions are a first wall portion and a second wall portion, the pair of side wall portions has a main body gusset portion that changes the distance between the first wall portion and the second wall portion, and a deformation restricting structure is provided that can restrict the deformation of the main body gusset portion when the main body gusset portion is folded at a predetermined position of the side wall portion.

56. The bag according to claim 1, 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 so as to face a predetermined area of ​​the surface of the handle sheet portion that is at least above the through portion.

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

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

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

60. The bag according to claim 59, wherein the reinforcing material is partially joined to the handle sheet portion, and the nonwoven fabric contains long fibers.

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

63. The bag according to 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 in a portion inside the side edge of the handle sheet portion.

64. The bag according to claim 56, wherein the peripheral wall portion has a pair of opposing wall portions, the handle sheet portion is provided on each of the pair of wall portions, and the width of the handle sheet portion is smaller than the width of the side wall portion.

65. The bag according to claim 56, wherein the peripheral wall portion has a pair of opposing wall portions, the handle sheet portion is provided on each of the pair of wall portions, and an adhesive is provided on the handle sheet portion provided on at least one of the side walls.

66. The bag body according to claim 1, wherein the main body is provided with a handle portion, the handle portion comprises a handle support sheet portion, a notch cut out from the upper edge of the handle support sheet portion to a predetermined position, a handle material positioned to cross at least two of the contours of the notch portion, 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 bond the handle material, and the adhesive auxiliary sheet is provided between the handle support sheet portion and the covering material.

67. The periphery wall portion has a pair of opposing wall portions and a pair of opposing side wall portions, each of which wall portions is connected to the side wall portion at its side edge, the main body is composed of a folded structure made by folding a blank material made of a paper-based material, and the position regulating member is joined to the inner surface of the folded structure, the position regulating member is configured as a continuous strip arranged from one side edge of the blank material toward the other side edge, and is joined to the blank material at a predetermined position, the bag body according to claim 1.

68. The bag body according to claim 67, wherein the regulating member joint portion that joins the position regulating member and the blank material is composed of a plurality of unit joint portions provided independently of each other and at different positions, at least one of the regulating 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 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 absorption properties.

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

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

72. The bag according to claim 1, wherein the area of ​​the facing surface of the regulating wall portion is larger than the area of ​​the surface of the peripheral wall portion corresponding to the facing surface.

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

74. The main body is configured such that its three-dimensional structure can be transformed from a first structure to a second structure, and when the main body is the first structure, the main body has a pair of folded wall surfaces that are folded to form a gusset from the upper end to the lower end, and opposing wall surfaces that face each other with the folded wall surfaces in between, and each of the two side edges of each of the opposing wall surfaces is connected to the folded wall surface, 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 that faces the first lower edge, and when the main body is the second structure, the main body has a peripheral wall and a bottom, the peripheral wall has a pair of opposing wall surfaces and a pair of opposing side wall surfaces, and the side wall surfaces have a main body gusset, The bag body according to claim 1, wherein each of the aforementioned wall portions is connected to the side wall portion by two side edges, and has a corner portion at the boundary between the wall portion and the side wall portion, and is configured such that the three-dimensional structure of the main body is transformed from the first structure to the second structure by bending the main body to satisfy the following first to fourth conditions. Condition 1: The gusset portion of the first structure is widened. Condition 2: The folded wall portion is folded inward using a predetermined reference position extending upward from the lower end of each folded wall portion as the first folding axis, thereby making the portion of the folded wall portion above the reference position the side wall portion. Condition 3: In the portion of the folded wall portion below the reference position, the portion of the folded wall portion is folded inward using a straight line running diagonally from the outer end of the folded wall portion toward the inner end of the lower edge joint as the second folding axis. Condition 4: The opposing wall portion is folded using a straight line connecting two positions connected to the reference position on each of the two side edges of the opposing wall portion as the third folding axis, thereby making the portion of the opposing wall portion above the third folding axis the wall portion.

75. The bag according to claim 74, wherein a film material is joined to at least the lower edge of the opposing wall surface portion.

76. The bag according to claim 74, wherein a crease is formed at a position corresponding to at least one of the third bending axes from the first bending axis.

77. The bag body according to claim 1, having a suspension device receiving structure.

78. The bag according to claim 1, having a plurality of closing portions facing each other on the upper side of the peripheral wall, at least one of the closing portions having an adhesive surface, and configured such that when the adhesive surface of one closing portion is adhered to the adhesive-facing surface of another closing portion that is opposite to the adhesive surface of one closing portion, the plurality of closing portions cover the opening.

79. The bag according to claim 78, wherein at least one of the closing portions has an extension portion formed integrally with the main body, and a bonding surface having an adhesive and an adhesive-facing surface facing the bonding surface are located in a predetermined area of ​​the extension portion.

80. The bag according to claim 78, wherein at least one of the closing portions comprises a closing portion forming member that is formed separately from the peripheral wall portion and adhered to the peripheral wall portion.

81. Having a handle, the closing portion forming member is bonded to the main body on the inner side of the main body than the handle. The bag body according to claim 80.

82. The bag according to claim 78, having a handle, wherein the handle comprises a handle member and a handle fixing sheet for fixing the handle member, and the handle fixing sheet is adhered to the inner surface of the peripheral wall portion so as to cover at least a portion of the handle member, and at least a portion of the handle also serves as the closing portion.

83. The bag according to claim 78, wherein at least one closing portion is provided with a weakened portion on the upper side of the peripheral wall and below the adhesive surface.

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

85. The bag according to claim 78, wherein the closing portion is provided with a notch at the end of the weakened portion.

86. The bag according to claim 78, wherein each of the multiple closing parts is provided with a weakening part, and when the multiple closing parts are arranged such that the adhesive surface of the closing part and the facing surface are parallel, the vertical position of each weakening part of the multiple closing parts is aligned.

87. The bag according to claim 78, wherein each of the multiple closing portions is provided with a weakening portion, and when the multiple closing portions are arranged such that the adhesive surface and the facing surface of the closing portion are parallel, the lower end of the adhesive surface of one closing portion is located above the weakening portion formed on the other closing portion having a surface facing the adhesive surface.

88. The bag according to claim 1, wherein the main body comprises a peripheral wall portion and a bottom portion, the peripheral wall portion comprises a pair of opposing wall portions and a pair of opposing side wall portions, the side wall portions have a main body gusset portion, the main body gusset portion has a fold line extending downward from the upper end of the side wall portion at a predetermined position on the side wall portion, the upper end of the side wall portion has a first projection provided at a first position extending from the upper end of the fold line toward one of the first side edges of the side wall portion, and a second projection provided at a second position extending from the upper end of the fold line toward the other second side edge of the side wall portion, the first projection and the second projection are arranged so as to be able to contact an adhesive surface when the main body gusset portion is closed.

89. The bag according to claim 1, wherein the main body has a peripheral wall portion, the peripheral wall portion has a pair of opposing wall surfaces and a pair of opposing side wall surfaces, the side wall surface has a main body gusset portion, at least one of the wall surfaces has a lid structure forming portion on the upper side, and the side wall surface has a protrusion, and when the main body gusset portion is reduced in size, at least a part of the protrusion faces the outside of the wall surface, at least one of the lid structure forming portions is configured to form an opening covering structure by being bent from one wall surface to the outer surface of the other wall surface, 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 is in contact with the protrusion from the outer surface side of the peripheral wall portion.

90. The bag according to claim 89, wherein the bag comprises a first wall portion and a second wall portion as a pair of opposing wall portions, and the lid structure forming portion comprises 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 reduced in size, at least a part 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 part of the second lid structure forming portion and 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, thereby forming the opening covering structure.

91. The bag body according to 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. The bag according to 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 positioned above the upper edge of the second lid structure forming portion.

93. The bag according to claim 89, wherein at least one of the lid structure forming portions is integrally formed with the peripheral wall portion.

94. The bag according to claim 89, wherein at least one of the lid structure forming portions has a lid structure forming member that is formed separately from the peripheral wall portion and adhered to the peripheral wall portion.

95. The bag according to claim 89, wherein a handle is provided on the outer surface of the peripheral wall portion.

96. The main body has a peripheral wall portion and a bottom portion, the peripheral wall portion has a first wall portion and a second wall portion as a pair of opposing wall portions, 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 is provided on the inner surface side of the first lid structure forming portion, a weakened portion is formed at a predetermined position along the surface of the first lid structure forming portion toward the bottom portion from the adhesive layer, the weakened portion is formed such that when the weakened portion is broken, the upper portion closer to the tip of the first lid structure forming portion and the lower portion further away from the tip of the first lid structure forming portion are separated with respect to the weakened portion, and the main body is configured 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 according to claim 1.

97. The bag according to claim 96, wherein the peripheral wall portion has a pair of opposing side wall surfaces, a side wall extension portion extending upward from a predetermined portion of the end of the side wall surfaces, and an end extension portion extending upward from a predetermined portion of the side end of the second lid structure forming portion, and the edge of the edge of the second lid structure forming portion and the edge of the end extension portion continuous with the edge also serve as the edge of the side wall extension portion.

98. The bag according to claim 97, wherein a side wall weakening portion is provided in a side wall extension portion which extends upward from a predetermined portion of the end of the side wall surface.

99. The bag according to claim 96, wherein the peripheral wall portion has a pair of opposing side wall portions, the side wall portions have a main body gusset portion, and a recess is formed which is cut out in a concave shape from the upper end of the second lid structure forming portion toward the bottom, and the recess is configured such that when the main body gusset portion is in a reduced state, a part of the side wall portion is visible to the recess.

100. The bag according to claim 99, wherein the side wall portion has a main body gusset, the side wall portion has a plurality of overlapping sections when the main body gusset portion is reduced, and a first through-hole is formed at a position corresponding to the recess in a designated section that is determined to be the section facing the contour of the recess among the plurality of sections.

101. The bag according to claim 100, wherein a second through-hole is formed in a position corresponding to the first through-hole in an opposing section that is determined to be the section facing the designated section when the main body gusset is reduced in size among the plurality of sections.

102. The bag according to claim 101, wherein the first wall portion and / or the first lid structure forming portion has a wall portion weakening portion formed 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. The bag according to claim 1, wherein the main body has the peripheral wall portion, the peripheral wall portion has a pair of opposing wall portions, and at least one of the wall portions has a lid structure forming portion on the upper side, the lid structure forming portion is configured to form an opening covering structure that is bent from one wall portion to the outer surface side of the other wall portion with a predetermined position as the bending axis, and on the inner side of the lid structure forming portion, there is an adhesive layer which is at least a portion of which is positioned above the bending axis, and a reinforcing sheet which is positioned 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. The bag according to claim 104, wherein the adhesive layer is bonded to the inner surface of the reinforcing sheet.

106. The bag body according to claim 104, wherein the peripheral wall portion has a pair of opposing side wall portions, the side wall portions have a main body gusset portion, the upper side of the side wall portions has an extended wall portion connected to the lid structure forming portion, and the opening covering structure has a structure formed in which both the lid structure forming portion and the extended wall portion are bent from one wall portion to the outer surface side of the other wall portion.

107. The bag according to claim 106, wherein the weakened portion is further formed on the extended wall portion.

108. The bag according to claim 106, wherein the lid structure forming portion has a portion whose contour is inclined diagonally upward in a direction away from the reference position, with the upper end of the boundary position between the lid structure forming portion and the extended wall portion as the reference position.

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