WO2023210362A1

WO2023210362A1 - Pouch

Info

Publication number: WO2023210362A1
Application number: PCT/JP2023/014797
Authority: WO
Inventors: 成行飯島; 俊生居敷; 智貴大鹿; 峰行羽原
Original assignee: 株式会社フジシール
Priority date: 2022-04-27
Filing date: 2023-04-12
Publication date: 2023-11-02

Abstract

Provided is a pouch in which child resistant function can be realized by a simple structure.　A pouch comprises a bag body including a first wall part 22 and a second wall part 23, and a zipper 41 which extends along a first edge part 31 and seals a storage space 38. The zipper 41 includes: a first member 51 which has a first interlocking part 52 and is attached to the first wall part 22; and a second member 61 which is attached to the second wall part 23 and has a second interlocking part 62 capable of interlocking with the first interlocking part 52, and a second extension part 66 extended along an inner surface of the second wall part 23 from the second interlocking part 62. The second extension part 66 is joined to the second wall part 23 by a second region 68 from among a first region 67, a second region 68, and a third region 69 in a first section 110, and is joined to the second wall part 23 by the third region 69 from among the first region 67, the second region 68, and the third region 69 in a second section 120.

Description

pouch

This invention relates to a pouch.

For example, Japanese Patent Laid-Open No. 2018-167873 (Patent Document 1) discloses a bag body having a first wall sheet portion and a second wall sheet portion that are arranged opposite to each other, and a first interlocking portion and a second interlocking portion that can interlock with each other. A zippered bag is disclosed that includes a zipper that closes an opening of a bag body. The first interlocking section is attached to the inner surface of the first wall sheet section via an attachment section extending downward from the first interlocking section. The second interlocking part is attached to the second wall sheet part directly or via an attachment part. A first gripping portion and a second gripping portion are provided on the outer surface of the first wall sheet portion and the outer surface of the second wall sheet portion, respectively.

The user grips the first gripping part and the second gripping part, and while separating the first wall sheet part and the second wall sheet part, inserts the first wall sheet part and the second wall sheet part into the bag body from the outside. Open the zipper by pushing it into the inner storage space.

Japanese Patent Application Publication No. 2018-167873

As disclosed in the above-mentioned Patent Document 1, pouches are known that have a child resistance (CR) function that prevents children and the like from easily opening the pouches. However, in the zippered bag disclosed in Patent Document 1, it is necessary to provide a first gripping part and a second gripping part on the outer surface of the bag body as handles when opening the bag, which makes the structure of the bag body complicated. Also, the cost of ancillary equipment for providing a handle on the bag body increases.

Therefore, the purpose of the present invention is to solve the above-mentioned problems, and to provide a pouch that has a simple configuration and can realize a child resistance function.

[1] A bag body including a first wall portion and a second wall portion facing each other, and a bag body extending along the first edge at a position away from the first edge of the bag body, and the first wall portion and a zipper for sealing a storage space between the second wall parts, the zipper having a first interlocking part and a first member attached to the first wall part, and a first member attached to the first interlocking part; a second interlocking part capable of interlocking with the second interlocking part; and an extending part extending from the second interlocking part along the inner surface of the second wall, and the second member is attached to the second wall. The inner surface of the second wall portion includes a first region facing the second occlusal portion, a second region closer to the storage space from the first region, and a second region facing the storage space from the first region to the first region. a third region closer to one edge, and the extending portion is defined as a third region of the first region, the second region, and the third region in the first section in the stretching direction of the zipper. in the second section in the stretching direction of the zipper, in at least the third region of the first region, the second region, and the third region; A pouch joined to the second wall.

According to the pouch configured in this way, when the zipper is opened, the first wall portion and the second wall portion in the third region are grasped by the user, and the first wall portion and the second wall portion are pressed against each other. An external force is applied in the direction of separation. At this time, if the position of the second wall part gripped by the user is in the first section, the external force applied by the user is not applied to the second occlusal part, so the occlusal state of the first occlusal part and the second occlusal part is not released. On the other hand, when the position of the second wall portion gripped by the user is in the second section, the external force applied by the user is applied to the second occlusal portion, so that the occlusal state of the first occlusal portion and the second occlusal portion is is canceled. Therefore, the child resistance function can be realized with a simple configuration that only requires selecting a region where the extension part is to be joined to the inner surface of the second wall part.

[2] The pouch according to [1], wherein the extension portion is not joined to the second wall portion in the first region.

According to the pouch configured in this way, it is possible to suppress deformation of the second interlocking part due to joining of the extension part to the inner surface of the second wall part during manufacturing of the pouch. Thereby, the occlusal state of the first occlusal part and the second occlusal part can be reliably obtained.

[3] The first wall portion and the second wall portion have a seal portion that extends along the second edge of the bag body and are joined to each other, and the second section is continuous with the seal portion. , [1] or the pouch according to [2].

According to the pouch configured in this way, when the user releases the occlusion of the first occlusal part and the second occlusal part in the first section while grasping the first wall part and the second wall part in the second section, In addition, since the external force applied by the user does not escape to the seal portion side, it becomes easier to release the occlusion of the first occlusion portion and the second occlusion portion in the first section.

[4] The extension part has a joint surface joined to the second wall part in the third region in the second section, and the joint surface has a joint surface in the direction perpendicular to the stretching direction of the zipper. Any one of [1] to [3], wherein the length decreases as it approaches the first section in the stretching direction of the zipper, and has an irregularly shaped portion that is minimum at the boundary between the first section and the second section. The pouch described in .

According to the pouch configured in this way, at the timing when the occlusion of the first occlusal part and the second occlusal part moves from the second section to the first section, the joint surface at the boundary between the first section and the second section is changed. It is possible to prevent excessive stress from being generated in the peripheral portion. Thereby, even if the zipper is repeatedly opened, the attachment state of the second member to the bag body can be maintained more reliably.

As explained above, according to the present invention, it is possible to provide a pouch that can realize a child resistance function with a simple configuration.

It is a front view showing a pouch in an embodiment of this invention. FIG. 2 is a sectional view showing the pouch as seen in the direction of the arrows on the line II-II in FIG. 1. FIG. FIG. 2 is a cross-sectional view of the pouch viewed in the direction of the arrows on line III-III in FIG. 1. FIG. FIG. 2 is a cross-sectional view of the pouch as seen in the direction of the arrow on line IV-IV in FIG. 1. FIG. It is a sectional view showing a pouch at the time of activation of a child resistance function. FIG. 3 is a sectional view showing the pouch when the child resistance function is not activated (when opened). It is a front view which shows the 1st modification of the attachment structure of the zipper to a bag main body. It is a front view which shows the 2nd modification of the attachment structure of the zipper to a bag main body. It is a front view which shows the 3rd modification of the attachment structure of a zipper to a bag main body. It is a front view which shows the 4th modification of the attachment structure of the zipper to a bag main body. It is a front view which shows the 5th modification of the attachment structure of a zipper to a bag main body. It is a front view which shows the 6th modification of the attachment structure of a zipper to a bag main body.

Embodiments of this invention will be described with reference to the drawings. In addition, in the drawings referred to below, the same numbers are attached to the same or corresponding members.

FIG. 1 is a front view showing a pouch in an embodiment of the invention. FIG. 2 is a cross-sectional view of the pouch viewed in the direction of the arrows on line II-II in FIG.

Referring to FIGS. 1 and 2, pouch 100 in this embodiment is a zippered bag for storing items such as medicines or dry batteries. The pouch 100 has a child resistance (CR) function that prevents children and the like from easily opening the pouch.

The pouch 100 has a bag body 21. The bag body 21 is made of a flexible sheet material. The bag body 21 is made of a resin sheet material.

The bag main body 21 has a rectangular shape in plan view. When the bag body 21 is viewed from above, the first edge 31 extends in the left-right direction of the bag body 21. When the bag main body 21 is viewed from above, the second edge 32 and the third edge 33 extend in the vertical direction of the bag main body 21 with an interval between them.

Note that the vertical direction of the bag main body 21 corresponds to the vertical direction when the bag main body 21 is in a posture in which the bottom of the bag main body 21 is placed at the lowest position, and the horizontal direction of the bag main body 21 corresponds to the vertical direction. It corresponds to the direction perpendicular to . The vertical and horizontal directions of the bag body 21 are perpendicular to the thickness direction of the first wall portion 22 and the second wall portion 23, which will be described later.

The bag body 21 has a first wall portion 22, a second wall portion 23, and a gusset portion 24. The first wall portion 22, the second wall portion 23, and the gusset portion 24 are made of one sheet material.

The first wall portion 22 and the second wall portion 23 are arranged to face each other. The first wall portion 22 and the second wall portion 23 are overlapped with each other in the thickness direction of the first wall portion 22 and the second wall portion 23. The gusset part 24 is arranged at the bottom of the bag body 21. The gusset part 24 forms a bottom gusset of the bag body 21 by being folded back from the lower end of the first wall part 22 and the second wall part 23 to the inside between the first wall part 22 and the second wall part 23. are doing.

The first wall portion 22 and the second wall portion 23 have seal portions 26 (26A, 26B, 26C). The seal portion 26 is formed by joining the first wall portion 22 and the second wall portion 23 to each other by thermal welding. The seal portion 26A extends in a band shape along the first edge 31. The seal portion 26B extends in a band shape along the second edge 32. The seal portion 26C extends in a band shape along the third edge 33.

A storage space 38 is provided inside the bag body 21. The storage space 38 is provided between the first wall 22 and the second wall 23. The storage space 38 is a space surrounded by the first wall portion 22, the second wall portion 23, the gusset portion 24, and a zipper 41, which will be described later.

A cutout portion 27 is provided in the first wall portion 22 and the second wall portion 23. The cutout portion 27 is provided in each seal portion 26 of the seal portion 26B and the seal portion 26C. The cutout portion 27 has a shape cut out from each end of the second edge 32 and the third edge 33 toward the inside of the bag body 21 . Note that the cutout portion 27 may be provided only in either one of the seal portion 26B and the seal portion 26C.

When the pouch 100 is used for the first time, the first wall portion 22 and the second wall portion 23 are cut along the left-right direction of the pouch 100 with the notch portion 27 as a base point. The opening portion 36 is provided by removing the cutout portion 37 including the seal portion 26A from the first wall portion 22 and the second wall portion 23.

The opening 36 extends in the left-right direction of the bag body 21. The opening 36 is formed by the upper edges of the first wall 22 and the second wall 23 after the cutout 37 is removed. The opening 36 opens between the seal portion 26B and the seal portion 26C in the left-right direction of the bag body 21.

Note that the first wall portion 22 and the second wall portion 23 may be made of separate sheet materials. Furthermore, the position where the opening 36 is provided in the bag body 21 is not particularly limited. For example, the opening 36 may extend diagonally across between the first edge 31 and the second edge 32 of the bag body 21. Furthermore, the pouch 100 may have a configuration in which the cutout portion 37 is not provided in the first place. In this case, the upper edges of the first wall 22 and the second wall 23 forming the opening 36 correspond to the "first edge" in the present invention.

The pouch 100 further includes a zipper 41. The zipper 41 is made of resin. The zipper 41 is provided on the bag body 21. The zipper 41 is configured to be able to open and close the opening 36. By closing the zipper 41, the storage space 38 is sealed. When the zipper 41 is opened, the storage space 38 is opened through the opening 36.

The zipper 41 extends along the first edge 31 at a position away from the first edge 31 of the bag body 21. The zipper 41 extends in one direction (the left-right direction of the bag body 21). The zipper 41 extends parallel to the first edge 31 (seal portion 26A). Zipper 41 extends along opening 36. The opening 36 is arranged between the first edge 31 (seal portion 26A) and the zipper 41. Zipper 41 extends between seal portion 26B and seal portion 26C.

Note that in the present invention, the zipper only needs to be configured to extend along the first edge of the bag body, and the parallel relationship between the stretching direction of the zipper and the first edge is not strictly required.

The first wall portion 22 and the second wall portion 23 have an inner surface 22a and an inner surface 23a, respectively. The inner surface 22a and the inner surface 23a face each other. The inner surface 22a and the inner surface 23a define a storage space 38. Zipper 41 is attached to inner surface 22a and inner surface 23a.

FIG. 3 is a cross-sectional view of the pouch viewed in the direction of the arrow on the line III-III in FIG. 1. FIG. 4 is a cross-sectional view of the pouch as seen in the direction of the arrow on line IV-IV in FIG.

Referring to FIGS. 1 to 4, the zipper 41 includes a first member 51 and a second member 61. The first member 51 is attached to the first wall portion 22 . The second member 61 is attached to the second wall portion 23.

The first member 51 has a first interlocking part 52 and a first extending part 56. The first engaging portion 52 and the first extending portion 56 are integrally molded from a resin material.

The first interlocking part 52 protrudes from the first wall part 22 toward the second wall part 23. The first interlocking portion 52 has a concave cross section that opens opposite the second wall portion 23 when cut along a plane perpendicular to the extending direction of the zipper 41 . The first interlocking part 52 has a concave cross section that can accommodate a second interlocking part 62, which will be described later, when cut by a plane perpendicular to the extending direction of the zipper 41. The first interlocking portion 52 has a concave cross section and extends in the direction in which the zipper 41 extends.

The first extending portion 56 extends from the first occlusal portion 52 along the inner surface 22a of the first wall portion 22. The first extending portion 56 forms a root portion of the first interlocking portion 52 that projects from the first wall portion 22 toward the second wall portion 23, and extends in the vertical direction of the bag body 21 from the root portion. It is set up like this. The first extending portion 56 is overlapped with the inner surface 22a of the first wall portion 22. The first extending portion 56 has a sheet shape that has a thickness in the same direction as the thickness direction of the first wall portion 22 and extends in a belt shape in the direction in which the zipper 41 extends. The first extending portion 56 extends in the left-right direction of the bag body 21 while having a constant width in the vertical direction of the bag body 21.

The second member 61 has a second interlocking part 62 and a second extending part 66. The second engaging portion 62 and the second extending portion 66 are integrally molded from a resin material.

The second occlusal part 62 is configured to be able to engage with the first occlusal part 52. The second interlocking portion 62 protrudes from the second wall portion 23 toward the first wall portion 22 . The second interlocking portion 62 has a key-shaped cross section that is inserted into the first interlocking portion 52 when cut along a plane perpendicular to the extending direction of the zipper 41 . The second interlocking portion 62 has a key-shaped cross section and extends in the direction in which the zipper 41 extends.

The second extending portion 66 extends from the second interlocking portion 62 along the inner surface 23a of the second wall portion 23. The second extending portion 66 forms a root portion of the second interlocking portion 62 that protrudes from the second wall portion 23 toward the first wall portion 22, and extends in the vertical direction of the bag body 21 from the root portion. It is set up like this. The second extending portion 66 is overlapped with the inner surface 23a of the second wall portion 23. The second extending portion 66 has a sheet shape that has a thickness in the same direction as the thickness direction of the second wall portion 23 and extends in a belt shape in the direction in which the zipper 41 extends. The second extending portion 66 extends in the left-right direction of the bag body 21 while having a constant width in the vertical direction of the bag body 21. The first extending portion 56 and the second extending portion 66 have symmetrical shapes with the first occlusal portion 52 and the second occlusal portion 62 in between.

Although FIGS. 3 and 4 show a zipper 41 having a plurality (two) of pairs of first interlocking portions 52 and second interlocking portions 62 that interlock with each other, the zipper in the present invention It may be provided with one set of a first occlusal part and a second occlusal part.

A first region 57, a second region 58, and a third region 59 are defined on the inner surface 22a of the first wall portion 22.

The first region 57 faces the first occlusal portion 52. The first region 57 faces the first occlusal portion 52 in the thickness direction of the first wall portion 22 . The first region 57 includes the upper end portion of the first interlocking portion 52 at a position continuous to the first extending portion 56 and the upper end portion of the first interlocking portion 52 at a position continuous to the first extending portion 56 in the vertical direction of the bag main body 21 . It corresponds to the range between the lower end.

The second region 58 is defined at a position closer to the storage space 38 from the first region 57. The second region 58 forms a boundary with the first region 57 in the vertical direction of the bag body 21. The second region 58 corresponds to a range below the lower end of the first engaging portion 52 at a position continuous to the first extending portion 56 in the vertical direction of the bag main body 21 .

The third region 59 is defined at a position closer to the first edge 31 of the bag body 21 from the first region 57. The third region 59 forms a boundary with the first region 57 in the vertical direction of the bag body 21. The third region 59 is disposed on the opposite side of the second region 58 with the first region 57 in between in the vertical direction of the bag body 21 . The third region 59 corresponds to the range between the opening 36 and the upper end of the first engaging portion 52 at a position continuous to the first extending portion 56 in the vertical direction of the bag main body 21 .

A first region 67, a second region 68, and a third region 69 are defined on the inner surface 23a of the second wall portion 23.

The first region 67 faces the second occlusal portion 62. The first region 67 faces the second interlocking portion 62 in the thickness direction of the second wall portion 23 . The first region 67 includes an upper end portion of the second interlocking portion 62 at a position continuous to the second extending portion 66 and an upper end portion of the second interlocking portion 62 at a position continuous to the second extending portion 66 in the vertical direction of the bag main body 21 . It corresponds to the range between the lower end.

The second region 68 is defined at a position closer to the storage space 38 from the first region 67. The second region 68 forms a boundary with the first region 67 in the vertical direction of the bag body 21. The second region 68 corresponds to a range below the lower end of the second engaging portion 62 at a position continuous to the second extending portion 66 in the vertical direction of the bag main body 21 .

The third region 69 is defined at a position closer to the first edge 31 of the bag body 21 from the first region 67. The third region 69 forms a boundary with the first region 67 in the vertical direction of the bag body 21 . The third region 69 is disposed on the opposite side of the second region 68 with the first region 67 in between in the vertical direction of the bag body 21 . The third region 69 corresponds to the range between the opening 36 and the upper end of the second engaging portion 62 at a position continuous to the second extending portion 66 in the vertical direction of the bag main body 21 .

In FIG. 1, the joining range of the second extending portion 66 to the bag body 21 is indicated by hatching. In FIGS. 3 and 4, the joining range of the first extending portion 56 and the second extending portion 66 to the bag body 21 is indicated by diagonal lines. The same applies to the drawings to be described later.

The first extending portion 56 is joined to the inner surface 22a of the first wall portion 22 by thermal welding. The first extending portion 56 is joined to the first wall portion 22 at a second region 58 and a third region 59 of a first region 57 , a second region 58 , and a third region 59 . The first extending portion 56 is not joined to the first wall portion 22 in the first region 57 .

The first extension portion 56 has a joint surface 131 (131M, 131N). The joint surface 131M is joined to the first wall portion 22 at the second region 58. The joint surface 131N is joined to the first wall portion 22 at the third region 59.

The joint surface 131 extends in the left-right direction of the bag body 21 in a band shape while having a constant width in the vertical direction of the bag body 21. The joint surface 131 extends between the seal portion 26C and the seal portion 26B in the left-right direction of the bag body 21. The joint surface 131 extends across a first section 110 and a second section 120, which will be described later.

The second extending portion 66 is joined to the inner surface 23a of the second wall portion 23 by thermal welding. The second extending portion 66 is joined to the second wall portion 23 in the second region 68 of the first region 67, the second region 68, and the third region 69 in the first section 110 in the stretching direction of the zipper 41. has been done. The second extending portion 66 is joined to the second wall portion 23 only in the second region 68 in the first section 110 . In the first section 110, the second extending portion 66 is not joined to the second wall portion 23 in the first region 67 and the third region 69.

In the second section 120 in the stretching direction of the zipper 41 , the second extending portion 66 extends from the second wall portion 23 in at least the third region 69 of the first region 67 , the second region 68 , and the third region 69 . is joined to. The second extending portion 66 is joined to the second wall portion 23 in the second region 68 and the third region 69 of the first region 67 , the second region 68 , and the third region 69 in the second section 120 . ing. The second extending portion 66 is not joined to the second wall portion 23 in the first region 67 in the second section 120 .

The second extension portion 66 has joint surfaces (141M, 141N). The joint surface 141M is joined to the second wall portion 23 in the second region 68. The joint surface 141N is joined to the second wall portion 23 in the third region 69.

The joint surface 141 extends in the left-right direction of the bag body 21 in a band shape while having a constant width in the vertical direction of the bag body 21. The joint surface 141M extends between the seal portion 26C and the seal portion 26B in the left-right direction of the bag body 21. The joint surface 141M extends across the first section 110 and the second section 120. The joint surface 141N extends in the second section 120 in the left-right direction of the bag body 21. The joint surface 141N has a rectangular shape in which the left-right direction of the bag main body 21 is the longitudinal direction and the vertical direction of the bag main body 21 is the short direction when viewed from above.

The first section 110 is a partial section of the zipper 41 in the stretching direction, and the second section 120 is another section of the zipper 41 in the stretching direction. The length (L1) of the first section 110 is greater than the length (L2) of the second section 120 (L1>L2). The length of the second section 120 is, for example, 20 mm or more (L2≧20 mm). The first section 110 and the second section 120 are connected to the seal section 26C and the seal section 26B, respectively. The first section 110 extends across the center line 210 of the bag body 21 in the left-right direction.

In the present embodiment, the first extending portion 56 is not joined to the first wall portion 22 in the first region 57 facing the first occlusal portion 52, and the second extending portion 66 is connected to the second occlusal portion 52. A first region 67 facing the portion 62 is not bonded to the second wall portion 23 . According to such a configuration, in the manufacturing process of the pouch 100, the heat for thermally welding the first extension part 56 to the inner surface 22a of the first wall part 22 is suppressed from being transmitted to the first occlusal part 52, The heat for thermally welding the second extending portion 66 to the inner surface 23a of the second wall portion 23 can be suppressed from being transmitted to the second interlocking portion 62. Thereby, thermal deformation of the first occlusal part 52 and the second occlusal part 62 can be suppressed, and the occlusal state of the first occlusal part 52 and the second occlusal part 62 can be reliably obtained.

FIG. 5 is a sectional view showing the pouch when the child resistance function is activated. FIG. 6 is a sectional view showing the pouch when the child resistance function is not activated (when opened). 5 shows a cross section of the pouch 100 corresponding to FIG. 3, and FIG. 6 shows a cross section of the pouch 100 corresponding to FIG. 4.

1 to 6, when opening the zipper 41, the user grasps the first wall portion 22 in the third region 59 and the second wall portion 23 in the third region 69, and the first wall portion An external force is applied to 22 and second wall 23 in a direction that causes them to move away from each other.

As shown in FIGS. 1 and 5, when the positions of the first wall portion 22 and the second wall portion 23 held by the user are in the first section 110, in the first section 110, the second extending portion 66 However, since it is joined to the second wall portion 23 only in the second region 68, the external force applied to the second wall portion 23 by the user does not act on the second occlusal portion 62. Therefore, the occlusal state of the first occlusal part 52 and the second occlusal part 62 is not released, and a child resistance function is activated in which the zipper 41 is not opened.

If a child or the like carelessly attempts to open the zipper 41, it is easy for a child or the like to grasp the first wall portion 22 and the second wall portion 23 near the center of the opening 36. In the present embodiment, the first section 110 is defined on the left and right sides of the bag body 21 across the center line 210, so that it is possible to more reliably prevent children or the like from opening the zipper 41.

As shown in FIGS. 1 and 6, when the position of the first wall portion 22 and the second wall portion 23 held by the user is in the second section 120, in the second section 120, the second extending portion 66 is joined to the second wall portion 23 in at least the third region 69 of the first region 67, the second region 68, and the third region 69, so that the external force applied to the second wall portion 23 by the user acts on the second occlusal part 62. Therefore, the occlusal state of the first occlusal part 52 and the second occlusal part 62 in the second section 120 is released. Furthermore, when an external force is applied to the first wall part 22 and the second wall part 23 in the first section 110 to separate them from each other, starting from the second section 120 in which the occlusal state has been released, the first section 110 The occlusal state of the first occlusal part 52 and the second occlusal part 62 is released, and the zipper 41 is opened.

In this embodiment, the second extending portion 66 is joined to the second wall portion 23 at least in the third region 69 in the second section 120. With such a configuration, as shown in FIG. As the second wall portions 23 are opened in the direction away from each other, the second extending portion 66 can be deformed together with the second wall portion 23 in the direction away from the first wall portion 22 . As a result, the external force applied to the second wall portion 23 by the user is efficiently transmitted to the second occlusal portion 62 connected to the second extending portion 66, so that the first occlusal portion 52 and the second occlusal portion 62 The occlusal state can be easily released.

Further, in the present embodiment, the second section 120 extends along the second edge 32 of the bag body 21 and is connected to the seal portion 26B that joins the first wall portion 22 and the second wall portion 23 to each other. . According to such a configuration, one end of the second section 120 is connected to the first section 110, while the other end of the second section 120 is connected to the seal portion 26B. In this case, the occlusal state of the first occlusal part 52 and the second occlusal part 62 in the first section 110 is released from the second section 120 where the occlusal state of the first occlusal part 52 and the second occlusal part 62 has been released. When doing so, since the external force does not escape to the other end side of the second section 120, it becomes easier to apply the external force to the second occlusal part 62 in the first section 110.

Next, various modifications of the structure for attaching the zipper 41 to the bag body 21 will be described.

FIGS. 7 to 10 are front views showing first to fourth modifications of the structure for attaching the zipper to the bag body. Referring to FIGS. 7 to 10, in these modified examples, the joint surface 141N has an irregularly shaped portion 146. The irregularly shaped portion 146 is provided at the end of the second section 120 that borders the first section 110. The length H of the irregularly shaped portion 146 in the direction perpendicular to the stretching direction of the zipper 41 (the vertical direction of the bag body 21) becomes smaller as it approaches the first section 110 in the stretching direction of the zipper 41, and It becomes minimum at the boundary of section 120.

In the modification shown in FIGS. 7 and 8, the irregularly shaped portion 146 has a triangular shape with a hypotenuse portion 147. In the modification shown in FIG. 7, the oblique side portion 147 is provided facing the storage space 38 in the vertical direction of the bag body 21. In the modification shown in FIG. 8, the oblique side portion 147 is provided facing the first edge portion 31 (opening portion 36) in the vertical direction of the bag body 21. The irregularly shaped portion 146 has an edge shape at the boundary between the first section 110 and the second section 120.

In the modification shown in FIG. 9, the irregularly shaped portion 146 has a curved edge 148 and a curved edge 149. The curved edge 148 is provided facing the first edge 31 (opening 36) in the vertical direction of the bag body 21. The curved edge 149 is provided facing the storage space 38 in the vertical direction of the bag body 21. The curved edge 148 and the curved edge 149 approach the first section 110 in the extending direction of the zipper 41 while being curved, and are connected to each other at the boundary between the first section 110 and the second section 120.

In the modification shown in FIG. 10, the irregularly shaped portion 146 has a curved edge 148 and an edge portion 150. The curved edge 148 is provided facing the first edge 31 (opening 36) in the vertical direction of the bag body 21. The end portion 150 extends in the vertical direction of the bag body 21 at the boundary between the first section 110 and the second section 120. The curved edge 148 approaches the first section 110 in the extending direction of the zipper 41 while curving, and continues to the end side 150 at the boundary between the first section 110 and the second section 120.

According to these modifications, at the timing when the occlusal state of the first occlusal part 52 and the second occlusal part 62 is released from the second section 120 to the first section 110, the second extending section 66 is moved to the third region 69. The state in which the second extending portion 66 is joined to the second wall portion 23 is gradually changed to a state in which the second extending portion 66 is not joined to the second wall portion 23 in the third region 69 . This prevents excessive stress from being generated at the peripheral edge of the joint surface 141N at the boundary between the first section 110 and the second section 120, and allows the zipper 41 (second member 61) to remain attached to the bag body 21 for a long period of time. can be maintained over a period of time.

Furthermore, according to the modification shown in FIGS. 9 and 10, the irregularly shaped portion 146 does not have an edge shape at the boundary between the first section 110 and the second section 120, so that the boundary between the first section 110 and the second section 120 is It is possible to more reliably prevent excessive stress from being generated at the peripheral edge of the joint surface 141N.

FIG. 11 is a front view showing a fifth modification of the structure for attaching the zipper to the bag body. Referring to FIG. 11, in this modification, the second extending portion 66 is located in the first area 67, the second area 68, and the third area in the second section 120 (120A, 120B) in the extending direction of the zipper 41. 69, at least the third region 69 is joined to the second wall portion 23.

The second section 120A is continuous with the seal portion 26B. The second section 120B is continuous with the seal portion 26C. The first section 110 extends between the second section 120A and the second section 120B in the left-right direction of the bag body 21. The first section 110 extends across the center line 210 of the bag body 21 in the left-right direction.

The total length (L2a+L2b) of the second section 120A and the second section 120B is larger than the length (L1) of the first section 110 (L2a+L2b>L1). The total length of the second section 120A and the second section 120B may be less than or equal to the length of the first section 110 (L2a+L2b≦L1).

As shown in this modification, the second section 120 in which the second extending portion 66 is joined to the second wall portion 23 at least in the third region 69 may be provided at a plurality of locations.

Furthermore, in this modification, a notch 161 and a notch 162 are provided at the upper edges of the first wall 22 and second wall 23 that form the opening 36. The cutout portion 161 and the cutout portion 162 have a shape in which the upper edges of the first wall portion 22 and the second wall portion 23 forming the opening portion 36 are cut out in a direction approaching the zipper 41. The notch 161 is provided in the second section 120A, and the notch 162 is provided in the second section 120B.

According to such a configuration, the user can recognize the position of the second section 120 (120A, 120B) in which the zipper 41 can be opened using the notch 161 and the notch 162 as marks. In addition, at the positions where the notch 161 and the notch 162 are provided, the vertical lengths of the first wall 22 and the second wall 23 that are gripped by the user when opening the zipper 41 are shortened. External force applied by the user is easily transmitted to the first occlusal part 52 and the second occlusal part 62. This facilitates the work of opening the zipper 41.

FIG. 12 is a front view showing a sixth modification of the structure for attaching the zipper to the bag body. Referring to FIG. 12, in this modification, the second extending portion 66 is joined to the second wall portion 23 only in the second region 68 in the first section 110 (110A, 110B) in the extending direction of the zipper 41. has been done.

The first section 110A is continuous with the seal portion 26B. The first section 110B is continuous with the seal portion 26C. The first section 110B extends across the center line 210 (see FIG. 1) of the bag body 21 in the left-right direction. The second section 120 extends between the first section 110A and the first section 110B in the left-right direction of the bag body 21.

As shown in this modification, the second section 120 in which the second extending portion 66 is joined to the second wall portion 23 at least in the third region 69 may be provided at a position away from the seal portion 26B. .

To summarize the structure of the pouch 100 according to the embodiment of the present invention described above, the pouch 100 according to the present embodiment includes a bag main body 21 including a first wall portion 22 and a second wall portion 23 facing each other; A zipper 41 extends along the first edge 31 at a position away from the first edge 31 of the bag body 21 and seals the storage space 38 between the first wall 22 and the second wall 23. Equipped with The zipper 41 has a first engaging part 52, a first member 51 attached to the first wall part 22, a second engaging part 62 that can engage with the first engaging part 52, and a second engaging part 62 that can engage with the first engaging part 52. It has a second extending part 66 as an extending part extending along the inner surface 23a of the second wall part 23, and includes a second member 61 attached to the second wall part 23. The inner surface 23a of the second wall portion 23 includes a first region 67 facing the second interlocking portion 62, a second region 68 near the storage space 38 from the first region 67, and a first edge extending from the first region 67. A third region 69 closer to the portion 31 is defined. The second extending portion 66 is joined to the second wall portion 23 in the second region 68 of the first region 67, the second region 68, and the third region 69 in the first section 110 in the stretching direction of the zipper 41. In the second section 120 in the stretching direction of the zipper 41 , at least the third region 69 of the first region 67 , the second region 68 , and the third region 69 is joined to the second wall portion 23 .

According to the pouch 100 according to the embodiment of the present invention configured in this way, the configuration is simple enough to simply select the area where the second extension portion 66 is to be joined to the inner surface 23a of the second wall portion 23. , child resistance function can be realized.

The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims rather than the above description, and it is intended that equivalent meanings and all changes within the scope of the claims are included.

21 Bag body, 22 First wall, 22a, 23a inner surface, 23 Second wall, 24 Gusset part, 26, 26A, 26B, 26C Seal part, 27 Notch part, 31 First edge, 32 Second edge part, 33 third edge, 36 opening, 37 cutout, 38 storage space, 41 zipper, 51 first member, 52 first interlocking part, 56 first extension part, 57, 67 first region, 58, 68 second region, 59, 69 third region, 61 second member, 62 second occlusal part, 66 second extension part, 100 pouch, 110, 110A, 110B first section, 120, 120A, 120B second section , 131, 131M, 131N, 141, 141M, 141N joint surface, 146 irregularly shaped part, 147 hypotenuse part, 148, 149 curved edge part, 150 edge part, 161, 162 notch part, 210 center line.

Claims

a bag body including a first wall portion and a second wall portion facing each other;
a zipper extending along the first edge at a position away from the first edge of the bag body and sealing a storage space between the first wall and the second wall;
The zipper is
a first member having a first interlocking part and attached to the first wall;
a second occlusal part that can engage with the first occlusal part; and an extension part that extends from the second occlusal part along the inner surface of the second wall part, and is attached to the second wall part. a second member,
The inner surface of the second wall portion includes a first region facing the second occlusal portion, a second region closer to the storage space from the first region, and a second region from the first region to the first edge. A third area is defined,
The extending portion is joined to the second wall portion in the second region of the first region, the second region, and the third region in a first section in the stretching direction of the zipper, and The pouch is joined to the second wall portion in at least the third region of the first region, the second region, and the third region in a second section in the stretching direction of the zipper.
The pouch according to claim 1, wherein the extending portion is not joined to the second wall portion in the first region.
The first wall portion and the second wall portion extend along a second edge of the bag body and have a seal portion joined to each other,
The pouch according to claim 1 or 2, wherein the second section is continuous with the seal portion.
The extension part has a joint surface joined to the second wall part in the third region in the second section,
The length of the joint surface in the direction orthogonal to the stretching direction of the zipper decreases as it approaches the first section in the stretching direction of the zipper, and becomes the minimum at the boundary between the first section and the second section. The pouch according to claim 1 or 2, having a deformed part.