Edge clamping bag

Abstract

The invention provides an edge clamping bag capable of maintaining smooth outpouring of contents. An edged bag (10) is provided with a first edged film (50) that is thermally welded to a front-surface-side film (30) and a rear-surface-side film (40) by means of a first side seal section (22), and is characterized in that: the edged bag (10) is provided with a first edged film (50) that is thermally welded to the front-surface-side film (30) and the rear-surface-side film (40); the first edge clamping film (50) has a first front side edge portion (56) located on the front side in the front-back direction of the first non-sealing region (53), and a first back side edge portion (57) located on the back side in the front-back direction of the first non-sealing region (53). The first front side edge portion (56) and the first back side edge portion (57) are each provided with a handle portion (27).

Description

Technical Field

[0001] The present invention relates to a side clamp bag including a first side clamp film heat-fused to a front side film and a back side film via a first side seal portion. Background Art

[0002] Conventionally, as a container for accommodating contents such as drinking water and liquid detergent, the applicant has proposed in Patent Document 1 a gusseted bag having a first gusseted film heat-sealed to a front film and a back film via a first side seal portion.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2020-132177 Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, in such a clamped bag, outside air may sometimes enter the bag from the spout while the contents are being poured out through the spout. This intrusion of outside air may cause so-called pulsation, which may hinder smooth pouring.

[0008] Therefore, the present invention is an invention that solves these problems, and an object of the present invention is to provide a clamp bag that can maintain smooth pouring of the contents with a simple structure.

[0009] Solutions for solving problems

[0010] The present invention solves the above-mentioned problem by providing a clamped edge bag as follows, wherein the clamped edge bag comprises a front side film, a back side film opposite to the front side film in the front and back directions and sandwiching a content accommodating portion, a first clamped edge film heat-fused to the front side film and the back side film by a first side sealing portion, and a handle portion for a user to hold the bag. In the clamped edge bag, the first clamped edge film comprises a first front side sealing area heat-fused to the front side film, a first back side sealing area heat-fused to the back side film, and a first non-sealed area which is an area inside the first front side sealing area and the first back side sealing area. The first clamped edge film comprises a first front side side edge portion located on the front side of the first non-sealed area in the front and back directions, and a first back side side edge portion located on the back side of the first non-sealed area in the front and back directions. The handle portions are respectively provided on the first front side side edge portion and the first back side side portion.

[0011] Effects of the Invention

[0012] According to the invention of the technical solution 1, the first front side side portion and the first back side side portion of the first clamping film are provided with handles respectively. Therefore, when the contents are poured out while the bag is lifted up by the handles on the two sides, the first front side side portions and the first back side side portions of the two sides held by the user gradually approach each other as the contents are poured out, and the interval between the front side film and the back side film can be narrowed on the first clamping film side, so that as the contents are poured out, the volume of the content storage portion can be gradually reduced, and the external air is suppressed from entering from the pouring port when the contents are poured out, and the contents can be poured out smoothly.

[0013] According to the invention of technical solution 2, at least a portion of the handle portion provided on the first front side edge portion and the first back side edge portion is formed on the side portion located in the positive and negative directions of the first base edge portion, thereby enabling the movement of the first front side edge portion and the first back side edge portion on both sides held by the user to approach each other more reliably as the contents are poured out.

[0014] According to the invention of technical solution 3, the handle portion is formed as a through hole that penetrates the first front side side portion and the first back side side portion in the film thickness direction, thereby simplifying the structure of the handle portion and avoiding complicating the bag structure.

[0015] According to the invention of technical solution 4, a first film bending portion is formed on the first clamping film, which is formed by bending the first clamping film toward the inside of the bag into a valley fold shape. As the contents are poured out, the bending degree of the first clamping film can be gradually increased, so that the first front side edge portions and the first back side edge portions on both sides can be smoothly approached, thereby allowing the volume of the content holding portion to be smoothly reduced.

[0016] According to the invention of technical solution 5, the inner film has an inner film bending portion formed by bending the inner film into a valley fold toward the second storage area side, and a film through portion formed on the inner film bending portion. Thus, as the contents are poured out, the degree of bending of the inner film can be increased, so that the side surface of the inner film on the first storage area side functions as a guide for guiding the contents from the first storage area side to the second storage area side, thereby preventing the contents from remaining in the first storage area.

[0017] According to the invention of technical solution 6, the outflow port is attached to the second non-sealed area of ​​the second clamping film, so that when the contents are poured out, on the first clamping film side, the gap between the front side film and the back side film becomes narrower. On the other hand, on the second clamping film side, the gap between the front side film and the back side film is prevented from narrowing due to the attachment of the outflow port. Therefore, when the bag is lifted by the handles on both sides of the first clamping film, the weight balance of the contents becomes good, so the pouring operation can be carried out stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective view showing a side clamp bag according to one embodiment of the present invention.

[0019] Figure 2 It is an explanatory diagram showing each film constituting the bag body.

[0020] Figure 3 It is an explanatory diagram showing the first edge clamping film.

[0021] Figure 4 It is an explanatory diagram showing the second edge clamping film.

[0022] Figure 5 This is an explanatory diagram showing an example of how to use the side-clip bag.

[0023] Figure 6 It is an explanatory diagram showing a modified example of the side clamp bag. DETAILED DESCRIPTION

[0024] Hereinafter, a side clamp bag 10 according to an embodiment of the present invention will be described with reference to the drawings.

[0025] The clamp bag 10 is a bag for accommodating various liquid contents such as herbicides, drinking water, liquid detergents, etc. Figure 1 , Figure 2 As shown, the clamp bag 10 comprises: a bag body 20, which is formed into a bag shape by heat-melting flexible films 30, 40, 50, and 60 to form a sealing portion for bag making; an inner film 70, which is arranged in the bag body 20 (content holding portion 21); and a flow outlet 80, which is attached to the bag body 20.

[0026] The bag body 20 is configured as a so-called transverse gusset type bag having clip edges formed on both sides. Figure 1 , Figure 2 As shown, the bag body 20 comprises: a front side film 30 and a back side film 40, which are arranged opposite to each other in the front and back directions X to sandwich the content accommodating portion 21; a first clamping film 50, which is arranged between the front side film 30 and the back side film 40 on one side of the bag side portion, and is heat-fused to the front side film 30 and the back side film 40 through the first side sealing portion 22; and a second clamping film 60, which is arranged opposite to the first clamping film 50 in the front-to-back direction Z to sandwich the content accommodating portion 21, and is heat-fused to the front side film 30 and the back side film 40 on the other side of the bag side portion through the second side sealing portion 23.

[0027] Each of the films 30 , 40 , 50 , 60 , and 70 is formed as a resin film having a heat-melting layer on at least one surface, and is arranged so that the heat-melting layers face each other at locations to be heat-melted to each other.

[0028] It should be noted that Figure 2In the figures, the heat-welded areas of the films 30 , 40 , 50 , 60 , and 70 are shown as being fully coated.

[0029] like Figure 1 , Figure 2 As shown, the bag body 20 has: a first side seal 22, which heat-seals both sides of the first edge film 50 to the films 30 and 40 in the transverse direction; a second side seal 23, which heat-seals both sides of the second edge film 60 to the films 30 and 40 in the transverse direction; a top seal 24, which adheres the films 30 and 40 at a position corresponding to the top of the bag body 20 and opposite to the bottom seal 25 for sandwiching the content storage part 21 between the first side seal 22 and the second side seal 23 in the front-back direction Z; a bottom seal 25, which adheres the films 30 and 40 at a position corresponding to the bag bottom 20a of the bag body 20; and an intermediate seal 26, which heat-seals the films 30 and 40 to the inner film 70. These seals 22 to 26 constitute a seal for bag making.

[0030] When an inner film 70 is provided as shown in the present embodiment, the top sealing portion 24 and the bottom sealing portion 25 include: a portion where the films 30 and 40 are adhered to each other by directly heat-melting the films 30 and 40; and a portion where the inner film 70 is sandwiched between the films 30 and 40 and the films 30, 40 and 70 are adhered to each other by heat-melting the films 30, 40 and 70.

[0031] Assuming that the gusset bag 10 is formed without providing the inner film 70 , the top seal portion 24 and the bottom seal portion 25 are composed only of portions where the films 30 , 40 are bonded together by directly heat-sealing the films 30 , 40 .

[0032] like Figure 3 As shown, the first clamping film 50 has a first front side sealing area 51 that is heat-fused to the front side film 30 at the first side sealing portion 22, a first back side sealing area 52 that is heat-fused to the back side film 40 at the first side sealing portion 22, and a first non-sealed area 53 which is an area on the inner side of the first front side sealing area 51 and the first back side sealing area 52.

[0033] like Figure 3 As shown, the first non-sealed region 53 has a first front side outer edge 54 as a boundary with the first front side sealed region 51 , and a first back side outer edge 55 as a boundary with the first back side sealed region 52 .

[0034] The first clamping film 50 is formed to be linearly symmetrical (left-right symmetrical) with respect to an imaginary line extending along the up-down direction Y at the center of the front and back directions X of the first clamping film 50. In other words, the first front side outer edge 54 and the first back side outer edge 55 are formed to be linearly symmetrical (left-right symmetrical) with respect to the imaginary line.

[0035] like Figure 3 As shown, the first front side outer edge 54 and the first back side outer edge 55 respectively include: a first base edge portion 54a, 55a, which are arranged to be spaced apart from each other in the positive and negative directions X; a first lower side inclined edge portion 54b, 55b, which extends from the lower end of the first base edge portion 54a, 55a to the first lower end connecting portion 53a connecting the lower ends of the first front side outer edge 54 and the first back side outer edge 55 to each other; and a first upper side inclined edge portion 54c, 55c, which extends from the upper end of the first base edge portion 54a, 55a to the first upper end connecting portion 53b connecting the upper ends of the first front side outer edge 54 and the first back side outer edge 55 to each other.

[0036] like Figure 3 As shown in FIG. 1 , the first base edge portions 54 a and 55 a are formed so as to extend linearly in the up-down direction Y. As shown in FIG.

[0037] like Figure 3 As shown, the first downward inclined edges 54b and 55b extend linearly and obliquely in the vertical direction Y so as to approach the inner side in the forward and backward direction X as they go downward (at an inclination angle of 45° in the present embodiment).

[0038] like Figure 3 As shown, the first upper inclined edge portions 54c and 55c extend linearly and obliquely in the up-down direction Y so as to approach the inner side in the forward and backward direction X as they go upward (at an inclination angle of 45° in the present embodiment).

[0039] like Figure 3 As shown, the first clamping film 50 has a first front side edge portion 56 located on the front side of the first non-sealed area 53 in the front and back direction X (closer to the front side of the front and back direction X than the first front side outer edge 54), and a first back side edge portion 57 located on the back side of the first non-sealed area in the front and back direction X (closer to the back side of the front and back direction X than the first back side outer edge 55).

[0040] In this embodiment, if Figure 3 As shown, the first front side side portion 56 and the first back side side portion 57 include heat-fused portions 56 a and 57 a heat-fused to the films 30 and 40 , and non-heat-fused portions 56 b and 57 b not heat-fused to the films 30 and 40 .

[0041] It should be noted that, in this embodiment, Figure 3 As shown, in the front and rear directions X, the non-heat-fused portions 56b and 57b are sandwiched by the heat-fused portions 56a and 57a.

[0042] like Figure 3As shown, the handle portions 27 (first handle portion 27a and second handle portion 27b) described later are respectively provided on the first front side edge portion 56 (specifically, the portion where the first front side edge portion 56 overlaps with the front side film 30) and the first back side edge portion 57 (specifically, the portion where the first back side edge portion 57 overlaps with the back side film 40).

[0043] like Figure 2 , Figure 5 As shown, the first clamping film 50 has a first film bending portion 58 between the first front side side portion 56 and the first back side side portion 57, which is formed by folding the first clamping film 50 in half toward the inside of the bag into a valley fold shape (a bending process is performed to maintain the bent state) along an imaginary line extending along the up and down direction Y at the center of the first clamping film 50 in the positive and negative directions X.

[0044] like Figure 4 As shown, the second edge-clamping film 60 has a second front side sealing area 61 that is heat-fused to the front side film 30 at the second side sealing portion 23, a second back side sealing area 62 that is heat-fused to the back side film 40 at the second side sealing portion 23, and a second non-sealed area 63 that is an area on the inner side of the second front side sealing area 61 and the second back side sealing area 62.

[0045] like Figure 4 As shown, the second non-sealed region 63 has a second front side outer edge 64 as a boundary with the second front side sealed region 61 , and a second back side outer edge 65 as a boundary with the second back side sealed region 62 .

[0046] The second clamping film 60 is formed to be linearly symmetrical (left-right symmetrical) with respect to an imaginary line extending along the up-down direction Y at the center of the front and back directions X of the second clamping film 60. In other words, the second front side outer edge 64 and the second back side outer edge 65 are formed to be linearly symmetrical (left-right symmetrical) with respect to the imaginary line.

[0047] like Figure 4 As shown, the second front side outer edge 64 and the second back side outer edge 65 respectively include: second base edges 64a, 65a, which are arranged to be spaced apart from each other in the positive and negative directions X; second lower side inclined edges 64b, 65b, which extend from the lower ends of the second base edges 64a, 65a to the second lower end connecting portion 63a connecting the lower ends of the second front side outer edge 64 and the second back side outer edge 65 to each other; and second upper side inclined edges 64c, 65c, which extend from the upper ends of the second base edges 64a, 65a to the second upper end connecting portion 63b connecting the upper ends of the second front side outer edge 64 and the second back side outer edge 65 to each other.

[0048] like Figure 4As shown in FIG. 1 , the second base edge portions 64 a and 65 a are formed so as to extend linearly in the up-down direction Y. As shown in FIG.

[0049] like Figure 4 As shown, the second downward inclined edges 64b and 65b extend linearly and obliquely in the vertical direction Y so as to approach the inner side in the forward and backward direction X as they go downward (at an inclination angle of 45° in the present embodiment).

[0050] like Figure 4 As shown, the second upper inclined edge portions 64c and 65c extend linearly and obliquely in the up-down direction Y so as to approach the inner side in the forward and backward direction X as they go upward.

[0051] In addition, if Figure 4 As shown in FIG. 1 , the second edge clamping film 60 (the second non-sealed region 63 thereof) has a flange facing region 66 in which the flange of the outflow port 80 is arranged to face each other. In the present embodiment, the flange facing region 66 is formed in an annular shape having a circular outer peripheral edge.

[0052] Furthermore, the second clamping film 60 has a circular through hole 67 for the outflow port formed through the film in the film thickness direction and through which the pouring tube portion of the outflow port 80 is inserted.

[0053] The outflow port 80 is formed of a synthetic resin or the like, and is attached to the second clamping film 60 (the second non-sealed area 63) of the bag body 20, and functions as an outlet for the contents. The outflow port 80 has a flange arranged opposite to the second non-sealed area 63 of the second clamping film 60, an outlet tube portion extending perpendicularly to the disc-shaped flange and forming an outlet hole, and a cover portion detachably mounted on the front end of the outlet tube portion.

[0054] In this embodiment, the flange of the outflow port 80 is formed as a disc-shaped (annular) portion having a through hole in the center and a circular outer peripheral edge (flange outer peripheral edge), which is arranged on the inner side of the bag body 20 and at least a portion is adhered to the inner side surface of the second clamping film 60 by heat welding.

[0055] according to Figure 4 It can be seen that at least a portion (a portion in this embodiment) of the central flange (flange opposing area 66) of the flange (flange opposing area 66) including the flow outlet 80 is arranged opposite to the area between the second upper side inclined edge 64c of the second front side outer edge 64 and the second upper side inclined edge 65c of the second back side outer edge 65.

[0056] according to Figure 1It can be seen that the area between the second upper side inclined edge 64c of the second front side outer edge 64 and the second upper side inclined edge 65c of the second back side outer edge 65 to which the flange (at least a part) of the above-mentioned flow outlet 80 is attached is a portion that is inclined in a manner that approaches the inner side of the bag body 20 in the front-rear direction Z as it moves upward when the clamp bag 10 is placed on the loading surface with the bag bottom 20a facing downward. Figure 1 It can be seen that when the clamp bag 10 is placed on the loading surface, the discharge tube portion of the outflow port 80 installed in the above-mentioned area is observed along the forward and reverse directions X, and is in an oblique upward state extending obliquely relative to the up-down direction Y (and the front-to-back direction Z). In other words, it is in an inclined state in such a manner that it approaches the outer side of the bag body 20 in the front-to-back direction Z as it moves upward.

[0057] according to Figure 2 , Figure 5 It can be seen that the inner film 70 is formed as a rectangular (or roughly rectangular) and flexible resin film having a hot melt layer on at least one side, and is arranged in the bag body 20 (content storage part 21) in a folded state, and its specified position is heat-fused to the films 30 and 40.

[0058] like Figure 2 As shown, the inner film 70 includes a front side adhesive portion 71 bonded to the inner side surface of the front side film 30 by thermal fusion, and a back side adhesive portion 72 bonded to the inner side surface of the back side film 40 by thermal fusion.

[0059] In addition, if Figure 2 , Figure 5 As shown, the inner film 70 has an inner film bending portion 73 between the front side adhesive portion 71 and the back side adhesive portion 72, which is formed by folding the inner film 70 into a valley fold (a bending process is performed to maintain the bent state) along an imaginary line extending in the up and down direction Y at the center of the positive and reverse directions X of the inner film 70.

[0060] In addition, if Figure 2 , Figure 5 As shown, a plurality of film through-holes 74 penetrating in the film thickness direction and formed in the shape of holes are formed in the inner film 70 , and at least one of the film through-holes 74 is formed on the inner film bent portion 73 .

[0061] like Figure 5 As shown, the content liquid storage section 21 has a first storage area 21 a and a second storage area 21 b partitioned by an inner film 70 .

[0062] like Figure 1 , Figure 5As shown, the first clamping film 50 functions as a side wall constituting the first storage area 21a, and the outflow port 80 is attached to a portion that is (directly) connected to the second storage area 21b.

[0063] In addition, if Figure 1 , Figure 2 As shown, the clamp bag 10 is provided with a plurality of handles 27 for the user to hold the bag. Figure 1 , Figure 2 As shown, the plurality of handle portions 27 include a first handle portion 27a and a second handle portion 27b.

[0064] like Figure 3 As shown, the first handle portion 27a is respectively arranged on the first front side edge portion 56 of the first clamping film 50 (specifically, the portion where the first front side edge portion 56 overlaps with the front side film 30), and the first back side edge portion 57 of the first clamping film 50 (specifically, the portion where the first back side edge portion 57 overlaps with the back side film 40).

[0065] More specifically, if Figure 3 As shown, at least a portion (in this embodiment, the entirety) of the first handle portion 27a is formed on the first front side side portion 56 located on the front side or back side in the front and back direction X of the first base edges 54a and 55a.

[0066] In addition, if Figure 3 As shown, the first handle portion 27 a is formed across the heat-fused portions 56 a and 57 a and the non-heat-fused portions 56 b and 57 b of the first front side edge portion 56 and the first rear side edge portion 57 .

[0067] In addition, if Figure 3 As shown, the first handle portions 27 a on both sides are formed line-symmetrically (left-right symmetrically) with respect to an imaginary line extending in the up-down direction Y at the center of the first edge clamping film 50 in the front-back direction X.

[0068] like Figure 3 As shown, the second handle portion 27b is respectively arranged on the first front side edge portion 56 of the first clamping film 50 (specifically, the portion where the first front side edge portion 56 overlaps with the front side film 30), and the first back side edge portion 57 of the first clamping film 50 (specifically, the portion where the first back side edge portion 57 overlaps with the back side film 40).

[0069] More specifically, if Figure 3 As shown, at least a portion (a portion in this embodiment) of the second handle portion 27b is formed on the first front side side portion 56 located on the front side or back side of the first upper side inclined edge portion 54c, 55c in the positive and negative direction X, and, as shown Figure 3 As shown, the second handle portion 27 b is formed across the heat-fused portions 56 a and 57 a and the non-heat-fused portions 56 b and 57 b of the first front side edge portion 56 and the first rear side edge portion 57 .

[0070] In addition, if Figure 3 As shown, the second handle portions 27 b on both sides are formed line-symmetrically (left-right symmetrically) with respect to an imaginary line extending in the up-down direction Y at the center of the first edge clamping film 50 in the front-back direction X.

[0071] In this embodiment, if Figure 1 , Figure 2 As shown, the handle portions 27a, 27b are formed as through holes extending through the first front side edge portion 56 and the first back side edge portion 57 (specifically, the portions where the first front side edge portion 56, the first back side edge portion 57 overlap with the membranes 30, 40).

[0072] It should be noted that Figure 2 In order to facilitate technical understanding, the diagram shows that the handle portion 27 is formed without heat-melting the films 30, 40, 50, but in this embodiment, the handle portion 27 is formed by performing punching processing at a specified position after heat-melting the films 30, 40, 50.

[0073] also, Figure 1 In the restricting adhesive portion 28 shown, the inner sides of the films 30 and 40 are adhered to each other, thereby preventing the second handle portions 27b on both sides in the front and rear directions from being separated from each other, so that the user can easily pass fingers through the second handle portions 27b.

[0074] It should be noted that in this embodiment, the first clamping film 50 is partially removed at the limiting adhesion portion 28 to heat-weld the films 30 and 40 , but the adhesion method at the limiting adhesion portion 28 may be any method, such as using an adhesive, molten resin, etc.

[0075] In the clamping bag 10 of the present embodiment obtained in this way, as Figure 5 As shown in FIG. 1 , the first front side edge portion 56 and the first back side edge portion 57 of the first edge clamping film 50 are provided with handles 27. Thus, when the bag is lifted by the handles 27 on both sides and the contents are poured out, as the contents are poured out, Figure 5As shown in (b), the first front side portion 56 and the first back side portion 57 on both sides held by the user gradually approach each other, and the interval between the front side film 30 and the back side film 40 can be narrowed on the first clamping edge film 50 side. Therefore, as the contents are poured out, the volume of the content holding portion 21 can be gradually reduced, and the entry of external air from the pouring port when the contents are poured out can be suppressed, thereby maintaining smooth pouring.

[0076] In addition, if Figure 2 , Figure 3 As shown, at least a portion of the grip 27 (27a) provided at the first front side side portion 56 and the first back side side portion 57 is formed at a portion located on the side of the first base edge portions 54a, 55a in the front and back direction X (that is, at least a portion of the grip 27 (27a) provided at the first front side side portion 56 is formed at a portion located on the front side of the first base edge portion 54a in the front and back direction X, and at least a portion of the grip 27 (27a) provided at the first back side side portion 57 is formed at a portion located on the back side of the first base edge portion 55a in the front and back direction X). As a result, the movement of bringing the first front side side portion 56 and the first back side side portion 57, which are held by the user, closer to each other as the contents are poured out can be more reliably produced.

[0077] In addition, if Figure 5 As shown in FIG. 1 , a first film bending portion 58 is formed on the first edge film 50 by bending the first edge film 50 toward the inside of the bag into a valley fold. Figure 5 As shown in (b), as the contents are poured out, the bending degree of the first clamping film 50 can be gradually increased, so that the first front side edge portion 56 and the first back side edge portion 57 on both sides are smoothly approached, thereby enabling the volume of the content holding portion 21 to be smoothly reduced.

[0078] In addition, if Figure 5 As shown, the inner film 70 has an inner film bent portion 73 formed by bending the inner film 70 into a valley fold toward the second accommodating area 21b connected to the outlet 80, and a film through portion 74 formed on the inner film bent portion 73. Figure 5 As shown in (b), as the contents are poured out, the bending degree of the inner film 70 can be increased, so that the side surface of the inner film 70 on the side of the first storage area 21a can function as a guide for guiding the contents from the first storage area 21a side to the second storage area 21b side, thereby preventing the contents from remaining in the first storage area 21a.

[0079] In addition, if Figure 1 , Figure 5 As shown, the outflow port 80 is attached to the second non-sealed area 63 of the second clamping edge membrane 60, thereby Figure 5As shown in (b), when the contents are poured out, on the side of the first clamping film 50, the gap between the front side film 30 and the back side film 40 becomes narrower. In contrast, on the side of the second clamping film 60, the gap between the front side film 30 and the back side film 40 is prevented from narrowing due to the flow outlet 80 installed. Therefore, the weight balance of the contents becomes good when the bag is lifted by the handles 27 on both side edges of the first clamping film 50, so the pouring operation can be carried out stably.

[0080] The above embodiments of the present invention are described in detail, but the present invention is not limited to the above embodiments, and various design changes can be made within the scope of the present invention described in the scope of the claims. In addition, the above embodiments and the variants described later can be combined arbitrarily to form the clamping bag 10.

[0081] For example, the clamp bag 10 may be contained in an outer packaging box (not shown) when in use, when placed, or when transported. Alternatively, the clamp bag 10 itself may be used, placed, or transported without being contained in an outer packaging box (not shown).

[0082] In addition, as for the specific embodiments of each film 30, 40, 50, 60, 70, as long as it is a film having a heat-fusible layer such as olefins such as low-density polyethylene, polypropylene, or polyesters such as PET (polyethylene terephthalate) on at least one side, it can be a single film of a heat-fusible layer or any layers can be stacked on the heat-fusible layer. The material constituting the stacked layer can be any material, and can be formed arbitrarily by stacking well-known polyesters such as PET and PBT (polybutylene terephthalate), polyamides such as nylon, polyolefins such as polypropylene and polyethylene, aluminum foil, etc.

[0083] In addition, in the above embodiment, it is described that the bag body 20 is formed by four films 30, 40, 50, and 60, but the specific scheme of the bag body 20 such as the number of films constituting the bag body 20 is not limited to the above. For example, a clamping film for the bottom may be additionally provided at a position corresponding to the bag bottom 20a.

[0084] Furthermore, the second clamping film 60 may not be provided, and the clamping bag 10 may be configured as a clamping bag provided with only the first clamping film 50 .

[0085] In addition, the inner film 70 may not be provided.

[0086] Furthermore, in the above-mentioned embodiment, the clamp bag 10 is configured as a large-capacity bag with a capacity of 2L to 5L, and the outflow port 80 is also configured as a large outflow port with an outer diameter of the flange of 50mm to 70mm, but the sizes of the clamp bag 10 and the outflow port 80 are not limited thereto and can be set arbitrarily according to the embodiment.

[0087] In addition, in the above-mentioned embodiment, it is described that the first front side outer edge 54 and the first back side outer edge 55 are formed to be linearly symmetrical (left-right symmetrical) with respect to an imaginary line extending along the up-down direction Y at the center of the front and back directions X of the first clamping film 50, but the first front side outer edge 54 and the first back side outer edge 55 can also be formed to be left-right asymmetrical.

[0088] In addition, similarly, in the above-mentioned embodiment, it is described that the second front side outer edge 64 and the second back side outer edge 65 are formed to be linearly symmetrical (left-right symmetrical) with respect to an imaginary line extending along the up-down direction Y at the center of the front and back directions X of the second clamping film 60, but the second front side outer edge 64 and the second back side outer edge 65 can also be formed to be left-right asymmetrical.

[0089] Furthermore, in the above embodiment, the clamp bag 10 is described as having the outflow port 80 , but the outflow port 80 may not be provided, and at least a portion of the films 30 , 40 , 50 may be cut with scissors or the like to form an outflow opening for pouring out the contents in the content storage section 21 .

[0090] Furthermore, in the above embodiment, the flange is described as being formed into a disc shape having a circular outer periphery, but the specific shape of the flange may be any shape such as a shape having an outer periphery (flange outer periphery) other than a circle, such as a rectangular shape or a polygonal shape.

[0091] Furthermore, in the above-mentioned embodiment, the flange is described as being bonded to the inner side surface of the second edge clamping film 60 , but the flange may be bonded to the outer side surface of the second edge clamping film 60 .

[0092] In addition, the method of adhering the flange to the second edge clamping film 60 may be any method other than heat welding or bonding.

[0093] It should be noted that, in this specification, terms such as "top", "bottom" and "side" are used to indicate up and down, but these terms do not limit the setting direction of the clamp bag 10 when placed or transported. For example, when placed or transported, the clamp bag 10 can also be placed on the loading surface with the side or top of the clamp bag 10 facing downward.

[0094] In addition, in the above-mentioned embodiment, it is described that the inclined edge portions 54b, 54c, 55c, 55b, 64b, 64c, 65c, 65b are composed of a straight line portion extending obliquely in the up-down direction Y, but the specific scheme of the inclined edge portions 54b, 54c, 55c, 55b, 64b, 64c, 65c, 65b is not limited to the above, and they can be composed of at least one straight line portion, at least one curved line portion, or a combination thereof.

[0095] In addition, in the above-mentioned embodiment, it is described that the first front side side portion 56 and the first back side side portion 57 include heat-fused portions 56a, 57a and non-heat-fused portions 56b, 57b, but the non-heat-fused portions 56b, 57b may not be formed in the first front side side portion 56 and the first back side side portion 57, that is, the films 30, 40 may be heat-fused across the entire area of ​​the first front side side portion 56 and the first back side side portion 57.

[0096] In addition, in the above embodiment, the handle portion 27 is described as being formed in the shape of a through hole for the user to pass his hands or fingers to hold the bag body 20, but the specific scheme of the handle portion 27 is not limited to the above, and any scheme may be used as long as it is a scheme suitable for the user to hold the bag.

[0097] For example, the handle portion 27 may be formed into a notch shape formed by cutting from the outer edge of the film of the first front side side portion 56 and the first back side side portion 57 toward the inner side of the film. Furthermore, instead of forming a through hole or a notch in the first front side side portion 56 and the first back side side portion 57, another film may be adhered to the first front side side portion 56 and the first back side side portion 57, thereby providing the handle portion 27 on the first front side side portion 56 and the first back side side portion 57.

[0098] In addition, in the above embodiment, Figure 2 As shown in the figure, it is explained that the handle portion 27 is formed into a hole shape (or a slit shape with width) that penetrates the membrane 30, 40, 50 in the membrane thickness direction, but the specific scheme of the handle portion 27 is not limited to the above, and the handle portion 27 can also be formed into a cut-in slit (without material removal, and a slit shape without width in a direction orthogonal to its extension direction) that penetrates the membrane 30, 40, 50 in the membrane thickness direction. It should be noted that when the handle portion 27 is formed into a hole shape (or a slit shape with width), the visual confirmation of the handle portion 27 can be improved, and the position and existence of the handle portion 27 can be easily noticed.

[0099] When the handle portion 27 is formed in a through-hole shape, at least a portion of the handle portion 27 may be formed on the first front side side portion 56 and the first rear side side portion 57 .

[0100] In addition, in the above-mentioned embodiment, it is described that the handle portion 27 (the first handle portion 27a, the second handle portion 27b) is formed by spanning the heat-melted portions 56a, 57a and the non-heat-melted portions 56b, 57b of the first front side edge portion 56 and the first back side edge portion 57, but the entire area of ​​the handle portion 27 (the first handle portion 27a, the second handle portion 27b) can also be formed in the heat-melted portions 56a, 57a or the non-heat-melted portions 56b, 57b.

[0101] In addition, in the above embodiment, the first handle portion 27a and the second handle portion 27b are provided as the handle portion 27, but only one of the first handle portion 27a or the second handle portion 27b may be provided. Figure 6 As shown, in the part other than the handle part 27a, 27b ( Figure 6 In the example shown, a bottom sealing portion 25 is provided with an additional handle portion 27 .

[0102] Description of Reference Numerals

[0103] 10: Side-clip bag;

[0104] 20: bag body;

[0105] 20a: bottom of bag;

[0106] 21: content receiving part;

[0107] 21a: first accommodation area;

[0108] 21b: second accommodation area;

[0109] 22: first side sealing portion;

[0110] 23: second side sealing portion;

[0111] 24: top sealing part;

[0112] 25: bottom sealing part;

[0113] 26: middle sealing part;

[0114] 27: handle;

[0115] 27a: first handle portion (handle portion);

[0116] 27b: second handle portion (handle portion);

[0117] 28: limited adhesion part;

[0118] 30: frontal lateral membrane;

[0119] 40: dorsal lateral membrane;

[0120] 50: first clamping film;

[0121] 51: first front side sealing area;

[0122] 52: first back side sealing area;

[0123] 53: first non-sealed area;

[0124] 53a: first lower end connecting portion;

[0125] 53b: first upper end connecting portion;

[0126] 54: first front side outer edge;

[0127] 54a: first basic edge;

[0128] 54b: first lower inclined edge;

[0129] 54c: first upper inclined edge;

[0130] 55: first back side outer edge;

[0131] 55a: first basic edge;

[0132] 55b: first lower inclined edge;

[0133] 55c: first upper inclined edge;

[0134] 56: first front side side portion;

[0135] 56a: heat-welding portion;

[0136] 56b: unheat-welded portion;

[0137] 57: first back side edge portion;

[0138] 57a: heat-welding portion;

[0139] 57b: unheat-welded portion;

[0140] 58: first film bending portion;

[0141] 60: second clamping film;

[0142] 61: second front side sealing area;

[0143] 62: second back side sealing area;

[0144] 63: second non-sealed area;

[0145] 63a: second lower end connecting portion;

[0146] 63b: second upper end connecting portion;

[0147] 64: second front side outer edge;

[0148] 64a: second basic edge;

[0149] 64b: second lower inclined edge;

[0150] 64c: second upper inclined edge;

[0151] 65: second back side outer edge;

[0152] 65a: second basic edge;

[0153] 65b: second lower side inclined edge;

[0154] 65c: second upper inclined edge;

[0155] 66: flange opposing area;

[0156] 67: through hole for outflow port;

[0157] 70: medial membrane;

[0158] 71: front side adhesive portion;

[0159] 72: back side adhesive portion;

[0160] 73: medial membrane fold;

[0161] 74: membrane penetration part;

[0162] 80: outflow;

[0163] X: positive and negative direction;

[0164] Y: up and down direction;

[0165] Z: front-to-back direction.

Claims

1. A clamped edge bag, comprising a front side film, a back side film sandwiching a content storage portion and facing the front side film in the front and back directions, a first clamped edge film heat-fused to the front side film and the back side film by a first side sealing portion, and a handle for a user to hold the bag, wherein the clamped edge bag is characterized in that: The first edge film has a first front side sealing area heat-fused to the front side film, a first back side sealing area heat-fused to the back side film, and a first non-sealed area as an area inside the first front side sealing area and the first back side sealing area. The first edge-clamping film has a first front side edge portion located on the front side of the first non-sealed area in the front and back directions, and a first back side edge portion located on the back side of the first non-sealed area in the front and back directions. The handles are respectively provided on the first front side edge portion and the first back side edge portion.

2. The clamped edge bag according to claim 1, characterized in that: The first non-sealed region has a first front side outer edge as a boundary with the first front side sealed region and a first back side outer edge as a boundary with the first back side sealed region. The first front side outer edge and the first back side outer edge respectively include a first base edge portion spaced apart from each other in the front and back directions, a first upper side inclined edge portion extending from the upper end of the first base edge portion to a first upper end connecting portion connecting the upper ends of the first front side outer edge and the first back side outer edge to each other, and a first lower side inclined edge portion extending to a first lower end connecting portion connecting the lower ends of the first front side outer edge and the first back side outer edge to each other. At least a portion of the handle portion provided at the first front side side portion is formed at a portion of the first base edge portion located at the first front side outer edge on the front side in the front and back directions. At least a portion of the handle portion provided at the first rear side side portion is formed at a portion of the first base edge portion located at the first rear side outer edge on the rear side in the front and rear directions.

3. The clamped edge bag according to claim 1, characterized in that: The handle portion is formed as a through hole that penetrates the first front side side portion and the first back side side portion in a film thickness direction.

4. The clamped edge bag according to claim 1, characterized in that: The first clamping film has a first film folded portion between the first front side edge portion and the first back side edge portion, wherein the first clamping film is folded toward the inside of the bag in a valley fold shape.

5. The clamped edge bag according to claim 1, characterized in that: The clamp bag further comprises an inner film disposed in the content liquid storage portion. The content liquid storage section has a first storage area and a second storage area separated by the inner film. The first edge clamping film functions as a side wall constituting the first containing area. The inner film comprises a front side adhesive portion adhered to the inner side surface of the front side film, a back side adhesive portion heat-fused to the inner side surface of the back side film, an inner film bent portion between the front side adhesive portion and the back side adhesive portion, the inner film being bent into a valley fold toward the second accommodating area side, and a film through portion formed on the inner film bent portion.

6. The clamped edge bag according to claim 1, characterized in that: The edge-clamping bag further comprises a second edge-clamping film and a flow outlet, wherein the second edge-clamping film sandwiches the liquid storage portion and is arranged opposite to the first edge-clamping film in the front-to-back direction and is heat-fused to the front side film and the back side film through a second side sealing portion. The second edge-clamping film has a second front side sealing area heat-fused to the front side film, a second back side sealing area heat-fused to the back side film, and a second non-sealed area as a portion inside the second front side sealing area and the second back side sealing area. The outflow port is attached to the second non-sealed area.

Images