Pouches and pouch cases

Abstract

To suppress film damage due to vibration during pouch carrying.SOLUTION: There is provided a pouch 10 carried while contained in a case 80, wherein a first film 40 has a first to-be-bent part 41 to be bent while contained in the case 80, right and left first side seals 24 each have a first bending control seal part 24d which protrudes convexly from a first seal base part 24a inward in a right-left direction Y, and the first bending control seal part 24d is formed adjacently to the first to-be-bent part 41 to be located more outside than the first to-be-bent part 41 in a height direction Z.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a pouch that is housed in a case and transported therein, and a case containing the pouch. [Background technology]

[0002] Previously, in Patent Document 1, the present applicant has proposed a pouch 110 as a container for storing liquid contents such as drinking water, liquid detergent, etc., which has left and right side films 130, a first film 140 connected to the left and right side films 130 by first side seals 124 formed on both the left and right sides, and a second film 150 connected to the left and right side films 130 by second side seals 125 formed on both the left and right sides, as shown in FIG. 12.

[0003] Furthermore, when transporting pouch 110, the applicant plans to fold films 140, 150 at intended folding points 141, 151 to shape the pouch, as shown in FIG. 12, and transport pouch 110 in this state, with pouch 110 housed within case 180 such as cardboard. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-132177 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the applicant conducted a vibration test simulating transportation of pouch 110 contained in case 180 as shown in FIG. 12, and found that damage to first film 140 could occur at location A in FIG. 12 where first film 140 is positioned facing downward within case 180.

[0006] It is presumed that such damage to first film 140 at point A in Figure 12 occurred due to the vibrations during the vibration test, which caused the folded portion (bent portion) of first film 140 to repeatedly move in the direction of the arrow shown in Figure 12 (height direction).

[0007] Therefore, the present invention is intended to solve these problems, and has an object to suppress damage to the film caused by vibrations during pouch transportation with a simple configuration. [Means for solving the problem]

[0008] The pouch of the present invention is a pouch that is transported in a state of being housed in a case, the pouch having left and right side films arranged opposite each other in the left-right direction with a content liquid storage section therebetween, a first film connected to the left and right side films by first side seals formed on both the left and right sides, and a second film arranged opposite the first film in the front-back direction with the content liquid storage section therebetween and connected to the left and right side films by second side seals formed on both the left and right sides, the first film First side seal The left and right first side seals each have a first seal base extending in a height direction and a first fold control seal portion protruding inward in the left-right direction from the first seal base, and the first fold control seal portion is located closer to the first planned fold location than the first planned fold location. , which is the side away from the center in the height direction of the pouch The first bending portion is formed adjacent to the first bending portion so as to be located on the outer side in the height direction. The first bending control seal portion has a height-direction inner edge portion facing inward in the height direction, and the height-direction inner edge portion is formed to be inclined so as to approach the left-right direction inner side as it goes outward in the height direction. Thereby, the above-mentioned problems are solved. Another aspect of the pouch of the present invention is a pouch that is transported in a state where it is housed in a case, the pouch having left and right side films arranged opposite to each other in the left-right direction with a content liquid storage section therebetween, a first film connected to the left and right side films by first side seals formed on both the left and right sides, and a second film arranged opposite to the first film in the front-back direction with the content liquid storage section therebetween and connected to the left and right side films by second side seals formed on both the left and right sides, the first film having a first intended folding location extending from one side of the left and right first side seals to the other side, where the first film is intended to be folded in a state where it is housed in the case, the left and right first side seals each having a first seal base extending in a height direction and a first inner folding control seal portion protruding inward in the left-right direction from the first seal base, the first inner folding control seal portion being located closer to the first intended folding location than the first intended folding location, , which is closer to the center in the height direction of the pouch The first bending portion is formed adjacent to the first bending portion so as to be located inside in the height direction. The first inner bending control seal portion has a height direction inner edge portion facing the height direction inner side, and the height direction inner edge portion is formed so as to be inclined so as to be closer to the left and right direction outer side as it goes inward in the height direction. Thereby, the above-mentioned problems are solved. In addition, the pouch-containing case of the present invention is a pouch-containing case comprising the pouch and the case that contains the pouch with the liquid contents therein, and the pouch is contained within the case with the first film folded at the first intended folding location, thereby solving the above problem. Effect of the Invention

[0009] This claim 1, 8、9According to the invention, the first film has a first planned folding point where it is planned to be folded when it is contained in the case, the left and right first side seals have first folding control seal portions that protrude convexly from the first seal base toward the inside in the left-right direction, and the first folding control seal portion is formed adjacent to the first planned folding point so as to be located outboard in the height direction than the first planned folding point.Therefore, when the first film is folded at the first planned folding point to shape the pouch and the pouch contained in the case is transported, the first folding control seal portion can prevent the folding point of the first film from moving repeatedly in the height direction due to vibrations during transportation of the pouch, and therefore, with a simple configuration, it is possible to prevent the occurrence of film damage due to vibrations during transportation of the pouch. In addition, by adopting a simple configuration for the first bending control seal portion in which the first seal base protrudes convexly inward in the left-right direction, it is possible to avoid compromising the design freedom of parts other than the first bending control seal portion. This claim 6、7 According to the invention relating to the present invention, by forming a first inner fold control seal portion on the left and right first side seals adjacent to the first intended fold location so that it is located vertically inward from the first intended fold location, similar to the effect of forming the first fold control seal portion described above, it is possible to suppress repeated movement of the fold location of the first film in the vertical direction due to vibrations during pouch transportation, and therefore, with a simple configuration, it is possible to suppress the occurrence of film damage due to vibrations during pouch transportation.In addition, by adopting a simple aspect of the first inner fold control seal portion that protrudes convexly from the first seal base toward the inside in the left-right direction, it is possible to avoid compromising the design freedom of parts other than the first inner fold control seal portion.

[0010] The present inventionAccording to this, the heightwise inner edge portion facing the heightwise inward side of the first fold control seal portion is formed at an angle so as to move inward in the left-right direction as it moves outward in the heightwise direction.This suppresses heightwise movement of the folded point of the first film caused by vibration during pouch transportation, while also suppressing sudden changes in the inner edge shape of the first side seal, and prevents the first fold control seal portion from becoming the starting point for pouch rupture in the event that the pouch is dropped, for example. This claim 2 According to the invention, the height-wise outer edge portion facing the height-wise outer side of the first fold control seal portion is formed at an angle so as to move outward in the left-right direction as it approaches the height-wise outer side. This ensures the volume of the content liquid storage portion height-wise outer than the first fold control seal portion while suppressing a sudden change in the inner edge shape of the first side seal, and prevents the first fold control seal portion from becoming a starting point for pouch rupture when the pouch is dropped, for example. This claim 3 According to the invention, by forming a folding control seal portion in the second side seal that connects the second film to the side film, it is possible to prevent the folding point of the second film from repeatedly moving in the vertical direction due to vibrations during transportation of the pouch, thereby improving the freedom of placement of the pouch within the case. This claim 5 According to the invention, by forming a folding control seal portion in the first intermediate seal that connects the inner film to the first film, vertical movement of the folding point of the first film caused by vibrations during pouch transportation can be more reliably suppressed. This claim 10 According to the invention, when the pouch is stored in the case with the first film folded at the first intended fold location and the first film facing downward, the pouch has a film protruding portion located above the second film, and a handle portion is formed on the film protruding portion, so that a user can easily grip the pouch by utilizing the handle portion located above the second film when the pouch is stored in the case. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is an explanatory diagram showing a state in which the pouch according to the embodiment of the present invention is placed on a placement surface in a usable state. [Diagram 2] FIG. 13 is an explanatory diagram showing the state in which a pouch is housed in a case. [Diagram 3] FIG. 2 is an explanatory diagram showing each film that constitutes the pouch. [Figure 4] FIG. 4 is an explanatory diagram showing the bending control seal portion. [Diagram 5] FIG. 13 is an explanatory diagram showing a first modified example of the pouch. [Figure 6] FIG. 11 is an explanatory diagram showing a second modified example of the pouch. [Figure 7] FIG. 13 is an explanatory diagram showing a third modified example of the pouch. [Figure 8] FIG. 13 is an explanatory diagram showing a fourth modified example of the pouch. [Figure 9] FIG. 9 is an explanatory diagram illustrating the pouch shown in FIG. 8, focusing on the folding control seal portion. [Figure 10] FIG. 13 is an explanatory diagram showing a fifth modified example of the pouch. [Figure 11] FIG. 11 is an explanatory diagram illustrating the pouch shown in FIG. 10, focusing on the folding control seal portion. [Figure 12] A reference diagram explaining problems that may occur when transporting pouches. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] A pouch 10 according to one embodiment of the present invention will now be described with reference to the drawings.

[0013] Pouch 10 is for containing liquid contents such as drinking water or liquid detergent, and as shown in FIG. 1, when in use, pouch 10 is placed with top seal 26 (described later) facing up and bottom seal 27 facing down, and is configured as a spouted pouch from which the liquid contents can be poured out from spout 70 attached to the side of pouch body 20.

[0014] As shown in Figures 1 to 3, the pouch 10 has a pouch body 20 formed into a bag shape by heat-welding flexible films 30, 40, and 50 to form a bag-making seal portion 23, an inner film 60 placed within the pouch body 20, and a spout 70 made of a synthetic resin or the like that is attached to the pouch body 20 and functions as an outlet for the content liquid.

[0015] As shown in Figures 1 to 3, the pouch body 20 is configured as a so-called horizontal gusset-type pouch with gusset portions formed on both sides, and has left and right side films 30 arranged opposite each other in the left-right direction Y across the content liquid storage section 21, a first film 40 connected to the left and right side films 30 by first side seals 24 formed on both the left and right sides, a second film 50 arranged opposite the first film 40 in the front-to-back direction X across the content liquid storage section 21 and connected to the left and right side films 30 by second side seals 25 formed on both the left and right sides, and an inner film 60 arranged between the left and right side films 30 inside the pouch body 20 (content liquid storage section 21) in a folded in half state.

[0016] Each of the films 30, 40, 50, 60 is formed as a rectangular (or approximately rectangular) resin film having a heat-sealed layer on at least one surface thereof, and is arranged so that the heat-sealed layers face each other at the locations where they are heat-sealed to each other. In FIG. 3 and other figures, the heat-sealed regions of the films 30, 40, 50, and 60 are shown filled in.

[0017] As shown in Figures 1 to 3, the pouch body 20 has a first side seal 24 formed by heat-welding both sides of the first film 40 in the left-right direction Y to the left and right side films 30, a second side seal 25 formed by heat-welding both sides of the second film 50 in the left-right direction Y to the left and right side films 30, a top seal 26 formed by heat-welding the films 40, 50, 60 at a position corresponding to the top of the pouch body 20 facing the bottom seal 27 across the content liquid storage section 21, and a bottom seal 27 formed by heat-welding the films 40, 50, 60 at a position corresponding to the bottom of the pouch body 20. The first side seal 24, the second side seal 25, the top seal 26, and the bottom seal 27 constitute a bag-making sealing section 23.

[0018] As shown in Figures 1 to 3, the pouch body 20 further has a first intermediate seal 28 formed by heat-welding the first film 40 and the inner film 60 together, and a second intermediate seal 29 formed by heat-welding the second film 50 and the inner film 60 together. Moreover, one of the left and right side films 30 has a spout fixing portion 31 to which a spout 70 is fixed, as shown in FIG. As shown in FIG. 2, the inner film 60 has a plurality of film perforations 61 formed in the form of holes penetrating the film in the thickness direction.

[0019] 2, the films 40, 50 are folded at planned folding points 41, 42, 51, 52 (described later) to adjust the overall shape of the pouch 10, and the pouch 10 is transported in a pouch-in-case state in which one or more pouches 10 containing the content liquid are housed in a case 80 such as a cardboard box with the first film 40 (or the second film 50) facing downward. In this regard, the pouch 10 has the following configuration.

[0020] 2 and 3, the first film 40 has an upper first intended folding portion 41 set above the spout 70 and a lower intended folding portion 42 set below the spout 70 as portions to be folded (bent) approximately 90 degrees into a mountain fold while contained within the case 80. These intended folding portions 41, 42 extend from one side of the left and right first side seals 24 to the other side, and in this embodiment extend linearly along the left-right direction Y.

[0021] 2 and 3, the second film 50 has an upper second intended fold portion 51 set above the spout 70 and a lower intended fold portion 52 set below the spout 70 as portions to be folded approximately 90° into a mountain fold while contained within the case 80. These intended fold portions 51, 52 extend from one side of the left and right second side seals 25 to the other side, and in this embodiment, extend linearly along the left-right direction Y.

[0022] In this embodiment, as shown in FIG. 3, the position in the height direction Z of the first intended folding point 41 on the first film 40 and the position in the height direction Z of the second intended folding point 51 on the second film 50 are set to be the same, and the position in the height direction Z of the intended folding point 42 on the first film 40 and the position in the height direction Z of the intended folding point 52 on the second film 50 are set to be the same.

[0023] The first and second side seals 24, 25 are formed as follows.

[0024] Specifically, as shown in Figures 3 and 4, the first and second side seals 24, 25 respectively have band-shaped first and second seal bases 24a, 25a extending in the height direction Z, upper inclined portions 24b, 25b formed on the upper side of the first and second seal bases 24a, 25a, lower inclined portions 24c, 25c formed on the lower side of the first and second seal bases 24a, 25a, and first and second bending control seal portions 24d, 25d which protrude continuously in a convex shape (approximately 3.0 to 5.0 mm) from the first and second seal bases 24a, 25a toward the inside in the left-right direction Y.

[0025] The first and second seal bases 24a, 25a have inner edges that extend linearly along the height direction Z, as shown in FIGS. As shown in Figs. 3 and 4, the upper inclined portions 24b, 25b have inner edges that are inclined (45° in this embodiment) with respect to the height direction Z so as to move inward in the left-right direction Y as they extend upward. 3 and 4, the lower inclined portions 24c, 25c have inner edges that are inclined (45° in this embodiment) with respect to the height direction Z so as to move inward in the left-right direction Y as they go downward. In this embodiment, the lower inclined portions 24c, 25c are formed adjacent to and in contact with the intended folding points 42, 52 so that their entirety is located outside the intended folding points 42, 52 in the height direction Z (on the side away from the center of the pouch 10 in the height direction Z, on the lower side in the examples shown in FIGS. 3 and 4).

[0026] As shown in Figures 3 and 4, the first and second folding control seal portions 24d, 25d are formed adjacent to the first and second intended folding locations 41, 51 so that their entirety is located outside the first and second intended folding locations 41, 51 in the height direction Z (the side away from the center of the pouch 10 in the height direction Z, the upper side in the example shown in Figures 3 and 4). In this embodiment, the first and second folding control seal portions 24d, 25d are formed adjacent to the first and second intended folding locations 41, 51, as shown in Figures 3 and 4, but may be formed with a small gap between them and the first and second intended folding locations 41, 51.

[0027] As shown in FIG. 4, the first and second folding control seal portions 24d, 25d have height-direction inner edge portions 24e, 25e facing inward in the height direction Z (the side approaching the center of the height direction Z of the pouch 10, the downward side in the example shown in FIG. 4) and height-direction outer edge portions 24f, 25f facing outward in the height direction Z.

[0028] As shown in FIG. 4, the heightwise inner edges 24e, 25e are formed with an inclination so as to move inward in the left-right direction Y (toward the center of the pouch 10 in the left-right direction Y) as they move outward in the height direction Z. In this embodiment, the height-direction inner edges 24e, 25e are curved so as to be convex toward the inside in the left-right direction Y, but the specific form may be any. For example, the height-direction inner edges 24e, 25e may be formed in a straight line, or may be curved so as to be convex toward the outside in the left-right direction Y, or may be formed by any combination of one or more of the above-mentioned convex or concave curves or straight lines.

[0029] As shown in FIG. 4, the height direction outer edge portions 24f, 25f are formed to be inclined so as to approach the outside in the left-right direction Y as they go outward in the height direction Z. In this embodiment, the height direction outer edge portions 24f, 25f are formed in a straight line, but the specific form may be any. For example, the height direction outer edge portions 24f, 25f may be formed in a curved line so as to be convex toward the inside in the left-right direction Y, or may be formed in a curved line so as to be convex toward the outside in the left-right direction Y, or may be formed by any combination of one or more of the above-mentioned convex or concave curves or straight lines.

[0030] In addition, in this embodiment, as shown in Figure 4, the outer portions of the height direction Z of the height direction inner edges 24e, 25e have been described as height direction outer edges 24f, 25f that are inclined so as to move outward in the left-right direction Y as they move outward in the height direction Z. However, the specific form of the outer portions of the height direction Z of the height direction inner edges 24e, 25e may be any, and may, for example, have an inner edge extending along the height direction Z, or may have an inner edge that is inclined so as to move inward in the left-right direction Y as it moves outward in the height direction Z.

[0031] In addition, as shown in Figure 2, when the pouch body 20 is stored in the case 80 with the films 40, 50 folded at the intended folding points 41, 51 and the first film 40 facing downward, the pouch body 20 has a film protruding portion 22 located above the second film 50. This film protruding portion 22 is the area where the films 40, 50, and 60 overlap, and the film protruding portion 22 has a hole-shaped handle portion 22a formed through the films 40, 50, and 60 so that the user can hold the pouch 10 with their hand or fingers. In FIG. 3, for ease of technical understanding, the films 30, 40, 50, and 60 are not heat-welded between each other, and the hole-shaped handle portion 22a is illustrated as being formed therein. However, in this embodiment, the films 30, 40, 50, and 60 are heat-welded between each other, and then punching is performed at predetermined locations to form the hole-shaped handle portion 22a.

[0032] Furthermore, the numerals 43 and 53 shown in FIG. 3 indicate the intended liquid surface contact points of the films 40 and 50 that come into contact with the liquid surface of the contents when the unopened pouch 10 containing the contents is placed on a supporting surface with the bottom seal 27 facing down. In this embodiment, the intended liquid surface contact locations 43, 53 are set below the intended folding locations 41, 51 of the films 40, 50 with a gap therebetween.

[0033] Although the embodiment of the present invention has been described above in detail, the present invention is not limited to the above embodiment, and various design modifications can be made without departing from the scope of the present invention as set forth in the claims. Furthermore, the pouch 10 may be constructed by arbitrarily combining the configurations of the embodiments and modifications described above or below.

[0034] For example, in the specific embodiment of each of the films 30, 40, 50, and 60, as long as it has a layer having heat-sealing properties such as an olefin-based layer such as low-density polyethylene or polypropylene, or a polyester-based layer such as PET (polyethylene terephthalate) on at least one side, the heat-sealing layer may be a single layer, or any layer may be laminated on the heat-sealing layer. Any material may be used to form the laminate, and any material may be formed by laminating known polyesters such as PET or PBT (polybutylene terephthalate), polypropylene, polyamide, polyethylene, aluminum foil, etc. In addition, in the above-described embodiment, the pouch body 20 is described as being formed from four films, namely, films 30, 40, and 50, but the specific aspects of the pouch body 20, such as the number of films constituting the pouch body 20, are not limited to the above. Also, the inner film 60 does not need to be provided. In addition, in the above-described embodiment, pouch 10 has been described as being configured as a spout-equipped pouch in which spout 70 is attached to pouch body 20, but pouch 10 may also be configured without providing spout 70, for example, by cutting a portion of pouch body 20 to form a pouring outlet.

[0035] In addition, in the above-described embodiment, the fold control seal portions 24d, 25d are formed in the first side seal 24 and the second side seal 25. However, as shown in FIG. 5, the first fold control seal portion 24d may be formed only in the first side seal 24 without forming the second fold control seal portion 25d in the second side seal 25. In this case, when storing the pouch 10 in the case 80, it is preferable to place the pouch 10 in the case 80 with the first film 40 facing downward.

[0036] 6, at least one of the first intermediate seal 28 and the second intermediate seal 29 may be formed with folding control seal portions 28d, 29d. Specifically, at least one of the first intermediate seal 28 and the second intermediate seal 29 formed on the left and right sides of the inner film 60 may have intermediate fold control seal parts 28d, 29d that protrude continuously (by about 3.0 to 5.0 mm) in a convex shape toward the inside in the front-rear direction X (left-right direction Y) from intermediate seal base parts 28a, 29a having an inner edge extending linearly along the height direction Z. The intermediate fold control seal parts 28d, 29d are formed adjacent to the first planned folding part 41 (or the second planned folding part 51) so as to be located outside the first planned folding part 41 (or the second planned folding part 51) in the height direction Z. In the example shown in FIG. 6, the fold control seal parts 28d, 29d are formed in contact with the first planned folding part 41 (or the second planned folding part 51), but may be formed with a small gap between them and the first planned folding part 41 (or the second planned folding part 51). In addition, the specific aspects of the above-mentioned bending control seal portions 28d, 29d are similar to those of the bending control seal portions 24d, 25d, such as having a height-direction inner edge portion formed in the same manner as the height-direction inner edge portion 24e, 25e, and a height-direction outer edge portion formed in the same manner as the height-direction outer edge portion 24f, 25f, and therefore will not be described here.

[0037] In the above embodiment, as shown in FIG. 3, the folding control seal portion 24d (25d) is formed on the outer side of the upper planned folding portion 41 (51) in the height direction Z of the upper planned folding portion 41 (51) of the two planned folding portions 41, 42 (51, 52) formed on the film 40 (50). The formation position and the number of the folding control seal portion 24d (25d) are not limited to the above. For example, as shown in FIG. 7, the folding control seal portion 24d (25d) formed adjacent to the lower planned folding portion 41 (51) may also be formed on the outer side of the lower planned folding portion 41 (51) in the height direction Z. In the example shown in FIG. 7, the folding control seal portion 24d (25d) on the lower side is formed in contact with the lower planned folding portion 41 (51), but it may be formed with a small gap between the lower planned folding portion 41 (51) and the lower planned folding portion 41 (51). In this case, the specific configuration of the lower bending control seal portion 24d (25d) is similar to that of the upper bending control seal portion 24d (25d), in that it has a height-wise inner edge portion formed in the same manner as the height-wise inner edge portion 24e (25e), and a height-wise outer edge portion formed in the same manner as the height-wise outer edge portion 24f (25f), and therefore its description will be omitted.

[0038] Furthermore, as shown in Figures 8 and 9, in addition to the first and second bending control seal portions 24d, 25d described above, the first and second side seals 24, 25 may be formed with first and second inner bending control seal portions 24g, 25g that protrude convexly from the first and second seal base portions 24a, 25a toward the inside in the left-right direction Y. These first and second inner bending control seal portions 24g, 25g are formed adjacent to the first and second intended bending locations 41, 51 so as to be positioned inward in the height direction Z from the first and second intended bending locations 41, 51, as shown in Figures 8 and 9.

[0039] As shown in Figures 8 and 9, the first and second inner bending control seal portions 24g, 25g have height-direction inner edge portions 24h, 25h facing inward in the height direction Z, and height-direction outer edge portions 24i, 25i facing outward in the height direction Z.

[0040] As shown in Figs. 8 and 9, the height direction inner edge portions 24h, 25h are formed to be inclined so as to move toward the outside in the left-right direction Y as they move inward in the height direction Z. In this embodiment, the height direction inner edge portions 24h, 25h are formed in a straight line, but the specific form may be any. For example, the height direction inner edge portions 24h, 25h may be formed in a curved line so as to be convex toward the inside in the left-right direction Y, or may be formed in a curved line so as to be convex toward the outside in the left-right direction Y, or may be formed by any combination of one or more of the above-mentioned convex or concave curves or straight lines.

[0041] As shown in Figs. 8 and 9, the height direction outer edge portions 24i, 25i are formed to be inclined so as to move inward in the left-right direction Y as they go inward in the height direction Z. In this embodiment, the height direction outer edge portions 24i, 25i are formed in a curved shape so as to be convex toward the inside in the left-right direction Y, but the specific form may be any. For example, the height direction outer edge portions 24i, 25i may be formed in a straight line, or may be formed in a curved shape so as to be convex toward the outside in the left-right direction Y, or may be formed by any combination of one or more of the above-mentioned convex or concave curves or straight lines.

[0042] In addition, in the examples shown in Figures 8 and 9, the inner portion in the height direction Z of the height direction outer edge portions 24i, 25i has been described as being height direction inner edge portions 24h, 25h that are inclined so as to move outward in the left-right direction Y as they move inward in the height direction Z. However, the specific form of the inner portion in the height direction Z of the height direction outer edge portions 24i, 25i may be any, and may, for example, have an inner edge extending along the height direction Z, or may have an inner edge that is inclined so as to move inward in the left-right direction Y as it moves inward in the height direction Z.

[0043] 8 and 9, the first and second inside folding control seal portions 24g, 25g are formed in the first and second side seals 24, 25, but the first inside folding control seal portion 24g may be formed only in the first side seal 24 without forming the second inside folding control seal portion 25g in the second side seal 25. In this case, when the pouch 10 is placed in the case 80, it is preferable to place the pouch 10 in the case 80 with the first film 40 facing downward. Also, the first side seal 24 may not be provided with the first inner bending control seal portion 24g, and only the second side seal 25 may be provided with the second inner bending control seal portion 25g.

[0044] In addition, in the examples shown in Figures 8 and 9, the first and second folding control seal portions 24d, 25d and the first and second inner folding control seal portions 24g, 25g are formed in the first and second side seals 24, 25. However, as shown in Figures 10 and 11, it is also possible to form the first and second inner folding control seal portions 24g, 25g (or only the first inner folding control seal portion 24g) without forming the first and second folding control seal portions 24d, 25d.

[0045] In addition, in the examples shown in Figures 8 and 9, the first and second inner bending control seal portions 24g, 25g are formed in contact with the first and second intended bending locations 41, 51, but they may also be formed with a small gap between them and the first and second intended bending locations 41, 51.

[0046] 8 and 9, the first and second inner folding control seal portions 24g, 25g are formed on the inner side in the height direction Z of the upper planned folding portion 41 (51) of the two upper and lower planned folding portions 41, 42 (51, 52) formed on the film 40 (50). However, the formation positions and the number of the first and second inner folding control seal portions 24g, 25g are not limited to those described above, and for example, the first and second inner folding control seal portions 24g, 25g formed adjacent to the lower planned folding portion 41 (51) may also be formed on the inner side in the height direction Z of the lower planned folding portion 41 (51).

[0047] Also, the intermediate seals 28, 29 may be provided with inner folding control seal parts (not shown), that is, inner folding control seal parts (not shown) formed so as to continuously protrude inward in the front-to-back direction X (left-right direction Y) from the intermediate seal base parts 28a, 29a in a convex shape and adjacent to the first and second intended folding parts 41, 51 so as to be located inside the first and second intended folding parts 41, 51 in the height direction Z. The specific aspect of the inner folding control seal part (not shown) is similar to the above-mentioned first and second inner folding control seal parts 24g, 25g except that it is formed in the intermediate seals 28, 29, and therefore description thereof will be omitted.

[0048] In addition, in the above-mentioned embodiments and variations, the bending control seal portions 24d, 24g, 25d, 25g, 28d, and 29d have been described as being formed continuously with the seal base portions 24a, 25a, 28a, and 29a, but the bending control seal portions 24d, 24g, 25d, 25g, 28d, and 29d may also be formed independently of the seal base portions 24a, 25a, 28a, and 29a.

[0049] Furthermore, in the above-described embodiment, as shown in FIG. 2, the films 40, 50, 60 are formed to a size such that when the films 40, 50 are folded at the intended folding points 41, 51 to adjust the shape of the pouch 10, a film protruding portion 22 is formed that is located above the first film 40 (or the second film 50); however, the films 40, 50, 60 may be formed to a size such that when the shape of the pouch 10 is adjusted as described above, a film protruding portion 22 is not formed.

[0050] Furthermore, the films 40, 50 may be printed or inscribed with characters indicating the intended folding locations 41, 42, 51, 52, or may not be printed or inscribed with characters.

[0051] In addition, in the above-described embodiment, pouch 10 is described as being contained in case 80 with first film 40 (or second film 50) facing downward, but the manner in which pouch 10 is contained in case 80 is not limited to the above. For example, films 40, 50 may be folded at intended folding points 41, 42, 51, 52 to adjust the overall shape, and pouch 10 may be contained in case 80 with top seal 26 side (left side side of pouch 10 shown in Figure 2) or bottom seal 27 side (right side side of pouch 10 shown in Figure 2) facing downward. [Explanation of symbols]

[0052] 10 ··· Pouch 20 ··· Pouch body 21 .... Content liquid storage section 22 Film protrusion 22a... Handle part 23 Bag making seal section 24 1st side seal 24a 1st seal base 24b...Upper slope part 24c...Downward slope 24d 1st bending control seal part 24e: Height direction inner edge 24f: Height direction outer edge 24g 1st inner bend control seal part 24h: Height direction inner edge 24i Height direction outer edge 25 Second side seal 25a Second seal base 25b...Upper slope part 25c...Downward slope 25d 2nd bending control seal part 25e: Inner edge in height direction 25f: Height direction outer edge 25g ··· Second inner folding control seal part 25h: Height direction inner edge 25i: Height direction outer edge 26 Top seal 27 Bottom seal 28 First intermediate seal 28a ··· Intermediate seal base 28d ··· Bending control seal part 28e: Inner edge in height direction 28f: Height direction outer edge 29 Second intermediate seal 29a ··· Intermediate seal base 29d: Intermediate bend control seal 29e: Inner edge in height direction 29f: Height direction outer edge 30 Side film 31 .....Spout fastening part 40 ··· Film 1 41 First planned bend location 42 ··· Planned bending point 43: Liquid surface contact point 50 ··· 2nd film 51 ··· Second bend planned location 52 ··· Planned bending point 53: Liquid surface contact point 60 ··· Inner film 61 Film penetration part 70 ··· Spout 80 ··· Case X: Front / back direction Y...Left and right direction Z: Height direction

Claims

1. A pouch that is transported in a state housed in a case, The pouch has left and right side films disposed opposite each other in the left-right direction with a liquid content storage section therebetween, a first film connected to the left and right side films by first side seals formed on both the left and right sides, and a second film disposed opposite the first film in the front-back direction with the liquid content storage section therebetween and connected to the left and right side films by second side seals formed on both the left and right sides, the first film has a first planned folding portion extending from one side of the left and right first side seals to the other side thereof and planned to be folded in a state where the first film is housed in the case; The left and right first side seals each have a first seal base extending in a height direction and a first bending control seal portion protruding inward in the left-right direction from the first seal base in a convex shape, The first folding control seal portion is formed adjacent to the first planned folding location so as to be located on the outer side in the height direction, which is away from the center in the height direction of the pouch, relative to the first planned folding location; The first folding control seal portion has a height direction inner edge portion facing inward in the height direction, The pouch is characterized in that the inner edge portion in the height direction is formed so as to be inclined so as to move inward in the left-right direction as it goes outward in the height direction.

2. The first bending control seal portion has a height-direction outer edge portion facing outward in the height direction, 2. The pouch according to claim 1, wherein the outer edge in the height direction is inclined so as to move outward in the left-right direction as it goes outward in the height direction.

3. The second film has a second planned folding portion extending from one side of the left and right second side seals toward the other side thereof and planned to be folded while contained within the case, The left and right second side seals each have a second seal base extending in a height direction and a second folding control seal portion protruding inward in the left-right direction from the second seal base in a convex shape, 3. The pouch according to claim 1, wherein the second fold control seal portion is formed adjacent to the second intended fold location so as to be located outward in a height direction from the second intended fold location.

4. The pouch has a bottom seal connecting the first film and the second film, and a top seal connecting the first film and the second film at a position opposite the bottom seal with the liquid content storage section therebetween, the pouch is configured as a spout-equipped pouch in which a liquid content is poured out from a spout attached to one of the left and right side films when the pouch is placed with the top seal facing up and the bottom seal facing down, The first intended bending portion is set above the spout, 4. The pouch according to claim 1, wherein the first fold control seal portion is formed above the first intended fold location.

5. The pouch further comprises an inner film disposed within the pouch between the left and right side films, the inner film is connected to the first film by a first intermediate seal and to the second film by a second intermediate seal; The first intermediate seal has an intermediate seal base portion extending in a height direction and an intermediate folding control seal portion protruding inward in a front-back direction from the intermediate seal base portion, 5. The pouch according to claim 1, wherein the intermediate fold control seal portion is formed adjacent to the first intended fold location so as to be positioned outward in the height direction from the first intended fold location.

6. The left and right first side seals further have a first inner bending control seal portion protruding inwardly in the left-right direction from the first seal base, 6. The pouch according to claim 1, wherein the first inner fold control seal portion is formed adjacent to the first intended fold location so as to be located vertically inward from the first intended fold location.

7. A pouch that is transported in a state housed in a case, The pouch has left and right side films disposed opposite each other in the left-right direction with a liquid content storage section therebetween, a first film connected to the left and right side films by first side seals formed on both the left and right sides, and a second film disposed opposite the first film in the front-back direction with the liquid content storage section therebetween and connected to the left and right side films by second side seals formed on both the left and right sides, the first film has a first planned folding portion extending from one side of the left and right first side seals to the other side thereof and planned to be folded in a state where the first film is housed in the case; The left and right first side seals each have a first seal base extending in a height direction and a first inner bending control seal portion protruding inward in the left-right direction from the first seal base in a convex shape, The first inner folding control seal portion is formed adjacent to the first intended folding location so as to be located on the inner side in the height direction, which is closer to the center of the height direction of the pouch than the first intended folding location, The first inner folding control seal portion has a height direction inner edge portion facing inward in the height direction, The pouch is characterized in that the inner edge portion in the height direction is formed so as to be inclined so as to move outward in the left-right direction as it approaches inward in the height direction.

8. A pouch-containing case comprising the pouch according to any one of claims 1 to 7 and the case housing the pouch containing a liquid content, The pouch-containing case is characterized in that the pouch is contained within the case with the first film folded at the first intended folding location.

9. A pouch-containing case as described in claim 8, characterized in that the pouch is contained within the case with the first film facing downward.

10. The pouch has a film protruding portion located above the second film when the first film is folded at the first intended folding location and the first film is accommodated in the case facing downward, 10. The pouched case according to claim 9, wherein a handle is formed on the protruding portion of the film.

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