JP2020200059A - Pouch intermediate body and pouch filling method - Google Patents

Abstract

To provide a pouch intermediate body and a pouch filling method capable of stabilizing the opening way of a filling opening part, while avoiding interference of a filling nozzle with respect to a film for gusset part at the time of filling of the content, with a simple structure.SOLUTION: In a pouch intermediate body 11, a top seal planned part 23 has a first gusset region 23a and a second gusset region 23b on both left and right sides, and a central side region 23c. In the first gusset region 23a, a first surface side fixed part 25 in which a surface side film 30 and a film 50 for gusset part are fixed, and a first rear side fixed part 26 in which a rear side film 40 and the film 50 for gusset part are fixed are formed. In the second gusset region 23c, a second fixed part 27 is formed in which one of the surface side film 30 and the rear side film 40 is fixed to the film 50 for gusset, and the other of the surface side film 30 and the rear side film 40 is not fixed to the film 50 for gusset.SELECTED DRAWING: Figure 3

Description

The present invention relates to a pouch intermediate for a gusseted pouch and a pouch filling method.

Conventionally, as a container for storing fluid contents such as liquid detergent, a pouch with a gusset, which is made by heat-welding a plurality of films and has gussets (gussets) on both left and right sides, is generally used. (See, for example, Patent Document 1).

In such a pouch with a gusset, as shown in FIG. 9, a side seal portion 122b and a bottom seal portion (not shown) are formed as one method of filling the contents, and the positions corresponding to the top seal portions are Is a pouch intermediate that has not been heat-welded, and by grasping the vicinity of the left and right side seal portions 122b with the gripper G and moving the left and right side seal portions 122b inward, the position corresponding to the top seal portion is reached. A method of opening the filling opening 124 to be formed and inserting a filling nozzle (not shown) from the filling opening 124 to fill the contents is generally known.

Japanese Unexamined Patent Publication No. 2015-040057

However, in the filling method shown in FIG. 9, since the left and right gusset film 150s are located near the center in the front and back directions, the filling nozzle (not shown) interferes with the left and right gusset films 150. Sometimes.

Therefore, as one idea for avoiding the above-mentioned problem, as shown in FIG. 10, in the planned top seal portion where the top seal portion is planned to be formed after filling the contents, the top seal portion is formed inside the side seal portion 122b in the left-right direction. By heat-welding at least one of the front side film 130 or the back side film 140 (the front side film 130 in the example shown in FIG. 10) and the gusset portion film 150, the position of the gusset portion film 150 is set to the front side film 130 or the back side film 140. It is conceivable to move the film to at least one side (the front film 130 in the example shown in FIG. 10).

However, as shown in FIG. 10A, when both the gusset film 150 are brought close to the front side film 130 or the back side film 140 and both are adhered to each other, the filling opening 124 becomes smaller. On the other hand, as shown in FIG. 10B, even when both sides of the gusset film 150 are brought close to the front side film 130 or the back side film 140 to form the filling opening 124, as the pouch becomes larger, that is, the top seal As the width of the planned portion in the left-right direction increases, when the left and right side seal portions 122b are moved inward by the gripper G, the opening of the filling opening 124 is poor or the opening of the filling opening 124 is not stable. There was a problem.

Therefore, the present invention solves these problems, and has a simple configuration to stabilize the opening of the filling opening while avoiding interference of the filling nozzle with the gusset film during filling of the contents. It is an object of the present invention to provide a pouch intermediate and a pouch filling method which can be used.

In the pouch intermediate of the present invention, the gusset film is placed between the front side film and the back side film in a folded state, and a planned top seal portion that functions as a filling opening is provided at a position corresponding to the top seal portion. It is a pouch intermediate of a pouch with a gusset, and the planned top seal portion is more than the left and right side film connecting portions connecting the front side film, the back side film, and the gusset portion film on both left and right sides. The inner regions in the left-right direction include a first gusset region and a second gusset region on both the left and right sides, and a central region located between the first gusset region and the second gusset region in the left-right direction. In one gusset region, a first front-side fixing portion in which the front-side film and the gusset portion film are fixed, and a first back-side fixing portion in which the back-side film and the gusset portion film are fixed are formed. In the second gusset region, a second fixing portion is formed in which one of the front side film or the back side film and the gusset portion film are fixed, and the other side film or the back side film and the gusset portion are formed. The above problem is solved by the fact that the film is not fixed to the film.
The pouch filling method of the present invention is a pouch filling method of filling a pouch with a gusset with contents, and after filling the contents from the filling opening of the pouch intermediate, each film is filled in the planned top seal portion. The problem is solved by closing the filling opening by heat-welding to form a top seal portion.

According to the present invention, by fixing the gusset film to at least one of the front side film and the back side film in the first gusset region and the second gusset region, interference of the filling nozzle with the gusset portion film during filling of the contents By fixing the gusset film to both the front side film and the back side film in the first gusset region while avoiding the above, when the filling opening is opened using the gripper, the opening region is mainly the center side region and Since it is possible to limit it to the second gusset region, it is possible to stabilize the opening of the filling opening.

Further, when the inner film is arranged between the front side film and the back side film in the central side region, the rigidity of the inner film is utilized to further improve the openness of the filling opening in the central side region and the second gusset region. Can be improved.
Further, when a third fixing portion in which at least one of the front side film or the back side film and the inner film are fixed is formed in the central side region on the first gusset region side of the inner sealing portion, the shape of the inner film or Since the position can be stabilized, interference of the filling nozzle with respect to the inner film can be avoided, and the effect of improving the openness of the filling opening in the central region and the second gusset region by utilizing the rigidity of the inner film. Can be obtained stably.

The plan view which shows schematic the pouch with a gusset of 1st Embodiment. The plan view which shows schematic the pouch intermediate of 1st Embodiment. Explanatory drawing which shows the state which opened the filling opening of the pouch intermediate of 1st Embodiment. The plan view which shows schematic the pouch with a gusset of 2nd Embodiment. The plan view which shows schematic the pouch intermediate of 2nd Embodiment. Explanatory drawing which shows the state which opened the filling opening of the pouch intermediate of 2nd Embodiment. Explanatory drawing which shows various deformation examples of a pouch intermediate. The explanatory view which shows the modification of the pouch intermediate roughly. Explanatory drawing which shows the state which opened the filling opening of the pouch intermediate of 1st reference example. Explanatory drawing which shows the state which opened the filling opening of the pouch intermediate of the 2nd reference example.

The gusseted pouch 10 according to the first embodiment of the present invention will be described below with reference to the drawings.

The gusseted pouch 10 accommodates fluid contents such as liquid detergent, and is configured as a so-called horizontal gusset type gusseted pouch having gusseted portions on both the left and right sides as shown in FIG. Has been done.

The gusseted pouch 10 is formed in a bag shape from a flexible resin film, and specifically, for a pair of gusseted portions of the front side film 30 and the back side film 40 so as to seal the content accommodating portion 21. The film 50 is heat-welded to form a bag-making seal portion 22 to form a bag shape.

As shown in FIG. 1, the sealing portion 22 includes a top sealing portion 22a in which the films 30, 40, and 50 are heat-welded on the top side of the gusseted pouch 10, and the films 30, 40 on both the left and right sides of the gusseted pouch 10. , 50 are heat-welded to the left and right side seal portions 22b, and the bottom seal portions 22c to which the films 30, 40, and 50 are heat-welded on the bottom side of the gusseted pouch 10 are provided.
Specifically, in the top seal portion 22a and the bottom seal portion 22c, the front side film 30 and the back side film 40, the front side film 30 and the gusset portion film 50, and the back side are arranged so as to face each other. The film 40 and the gusset film 50 are heat-welded, and in the side seal portion 22b, between the front side film 30 and the gusset film 50, the back side film 40 and the gusset are arranged so as to face each other. The part film 50 is heat-welded.
Even in the region where the gusset film 50 is arranged between the front side film 30 and the back side film 40, the front side film 30 and the back side film can be partially removed by partially removing the gusset portion film 50 at an arbitrary position. The inner surfaces of the gusset film 50 folded in half at an arbitrary position may be partially heat-welded to each other.
Further, in FIG. 1 and the like, in order to facilitate understanding of the configuration of each part, a pouch 10 with a gusset without any contents is shown.
Further, in the present embodiment, the side seal portions 22b are left and right side film connecting portions 70 connecting the front side film 30, the back side film 40, and the gusset portion film 50 on both sides in the left-right direction.

Each of the films 30, 40, and 50 is formed as a rectangular (or substantially rectangular) resin film having a heat welding layer on at least one side thereof, so that the heat welding layers face each other at a portion where they are heat welded to each other. It is located in.
As can be seen from FIGS. 1 and 3, the gusseted film 50 is in a state in which the crease line 51 is directed inward in the left-right direction between the front side film 30 and the back side film 40 on both the left and right sides of the gusseted pouch 10. It is arranged in a folded state.

Next, the pouch intermediate 11 in this embodiment will be described below with reference to the drawings.
Here, since the pouch intermediate 11 is the same as the gusseted pouch 10 described above except for a partial configuration, the description thereof will be omitted for the configurations other than the differences.

First, as shown in FIGS. 2 and 3, in the pouch intermediate 11, the top seal portion 22a of the gusseted pouch 10 is not formed, and instead, the contents are located at positions corresponding to the top seal portion 22a. It has a planned top seal portion 23, which is a region where the top seal portion 22a is planned to be formed after filling. As can be seen from FIG. 3, at least a part of the planned top seal portion 23 is a portion that functions as a filling opening 24.

As shown in FIG. 2, the planned top seal portion 23 is a region inside the side seal portion 22b (side film connecting portion 70) in the left-right direction, and is a gusset portion between the front side film 30 and the back side film 40. A central region located between the first gusset region 23a and the second gusset region 23b on both the left and right sides and the first gusset region 23a and the second gusset region 23b in the left-right direction in which the film 50 is arranged in a folded state. It has 23c.

As shown in FIGS. 2 and 3, the first gusset region 23a includes a first front-side fixing portion 25 as a heat-welded portion in which the front side film 30 and the gusset portion film 50 are heat-welded, and the back side film 40 and the gusset. A first back side fixing portion 26 is formed as a heat-welded portion by heat-welding the part film 50.

As shown in FIGS. 2 and 3, the first front-side fixing portion 25 and the first back-side fixing portion 26 are continuous with the side seal portion 22b and end edges (close to the central side region 23c side of the first gusset region 23a). That is, they are formed in contact with or close to the crease line 51) of the gusset film 50 (in the present embodiment), in other words, the first front side fixing portion 25 and the first back side fixing portion 26 are formed. It is formed over the entire area or almost the entire area (in the present embodiment) of the first gusset area 23a in the left-right direction.

As shown in FIGS. 2 and 3, the second gusset region 23b is a heat-welded portion in which one of the front side film 30 or the back side film 40 (the front side film 30 in this embodiment) and the gusset portion film 50 are heat-welded. The second fixing portion 27 is formed.
Further, in the second gusset region 23b, as shown in FIG. 3, the other side of the front side film 30 or the back side film 40 (the back side film 40 in this embodiment) and the gusset portion film 50 are not fixed to each other.

As shown in FIGS. 2 and 3, the second fixing portion 27 is continuous with the side seal portion 22b and has an edge (that is, the gusset portion film 50) closer to the central side region 23c of the second gusset region 23b. It is formed in contact with or close to the crease line 51) (in the present embodiment), in other words, the second fixing portion 27 is the entire area or almost the entire area of the second gusset region 23b in the left-right direction (this embodiment). In the form, it is formed over the entire area).

Next, the pouch filling method in this embodiment will be described below.

First, the pouch intermediate 11 shown in FIGS. 2 and 3 is prepared.

Next, as shown in FIG. 3, by gripping the vicinity of the left and right side seal portions 22b with the gripper G and moving the left and right side seal portions 22b inward, the filling openings in the second gusset region 23b and the central side region 23c. The portion 24 is opened, and a filling nozzle (not shown) is inserted into the content accommodating portion 21 from the filling opening 24 to fill the contents.
At this time, the contents may be filled without inserting a filling nozzle (not shown) into the pouch intermediate 11.

Next, the films 30, 40, and 50 located at the planned top seal portion 23 are heat-welded to form the top seal portion 22a to close the filling opening 24 and seal the contents in the contents accommodating portion 21. ..

Next, the gusseted pouch 10 according to the second embodiment of the present invention will be described with reference to FIGS. 4 to 6. Here, since the second embodiment is exactly the same as the first embodiment described above except for a partial configuration, the description of the configuration other than the differences will be omitted.

First, in the gusseted pouch 10 of the second embodiment, as can be seen from FIGS. 4 and 6, the inner film 60 is arranged in a folded state between the front side film 30 and the back side film 40 in the central side region 23c. ing.

As can be seen from FIGS. 4 and 6, the inner film 60 is arranged with its crease line 61 facing the first gusset region 23a side, and its left and right ends are directed toward the second gusset region 23b side. It is arranged in the state.

As can be seen from FIGS. 4 and 6, one of the left and right ends of the inner film 60 is heat-welded to the inner surface of the front side film 30 by the inner sealing portion 28, and the other of the left and right ends of the inner film 60 is inside. It is heat-welded to the inner surface of the back side film 40 by the sealing portion 28.

Further, the upper end portion of the inner film 60 is heat-welded to the inner surface of the front side film 30 and the inner surface of the back side film 40 facing each other in the top seal portion 22a, and the lower end portion of the inner film 60 is the bottom seal portion 22c. Is hot-welded to the inner surface of the facing front film 30 and the inner surface of the back film 40. Further, in the top seal portion 22a and the bottom seal portion 22c, the inner surfaces of the inner film 60 folded in half are heat-welded to each other.

Next, the pouch intermediate 11 in the second embodiment is as follows.
Here, since the pouch intermediate 11 is the same as the gusseted pouch 10 described above except for a partial configuration, the description thereof will be omitted for the configurations other than the differences.

First, in the state of the pouch intermediate 11, as can be seen from FIG. 6, the inner surfaces of the inner films 60 folded in half are not heat-welded to each other in the planned top seal portion 23.

Further, in the state of the pouch intermediate 11, as can be seen from FIGS. 5 and 6, at least one of the front side film 30 and the back side film 40 (in the present embodiment) on the first gusset region 23a side of the inner seal portion 28. A third fixing portion 29 is formed in which the front side film 30 or the back side film 40) and the inner film 60 are fixed to each other.
As shown in FIGS. 5 and 6, the third fixing portion 29 is formed continuously with the inner sealing portion 28 over the entire area in the left-right direction of the inner film 60.
In the pouch intermediate 11 shown in FIGS. 5 and 6, an unsealed portion is provided in the gap between the third fixing portion 29 and the first gusset region 23a, and the gap is between the front side film 30 and the back side film 40. The insides of the film may be bonded to each other.

Next, the pouch filling method in the second embodiment will be described below.

First, the pouch intermediate 11 shown in FIGS. 5 and 6 is prepared.

Next, as shown in FIG. 6, by gripping the vicinity of the left and right side seal portions 22b with the gripper G and moving the left and right side seal portions 22b inward, the filling openings in the second gusset region 23b and the central side region 23c. The portion 24 is opened, and a filling nozzle (not shown) is inserted into the content accommodating portion 21 from the filling opening 24 to fill the contents.
At this time, the contents may be filled without inserting a filling nozzle (not shown) into the pouch intermediate 11.

Next, the films 30, 40, 50, and 60 located at the planned top seal portion 23 are heat-welded, and the inner surfaces of the two-folded inner films 60 are heat-welded to each other to form the top seal portion 22a. The filling opening 24 is closed with, and the contents in the contents accommodating portion 21 are sealed.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims. It is possible.

For example, the gusseted pouch 10 and the pouch intermediate 11 may be formed by arbitrarily combining the configurations of the plurality of embodiments and modifications described in the present specification.
Further, as for the specific embodiments of the films 30, 40, 50, 60, those having a heat-weldable layer such as an olefin-based film of low-density polyethylene or polypropylene or a polyester-based film such as PET (polyethylene terephthalate) on at least one side. If so, any layer may be laminated on the single film of the heat-welded layer or the heat-welded layer. Any material may be used to form the laminate, and it may be arbitrarily formed by laminating known polyesters such as PET and PBT (polybutylene terephthalate), polypropylene, polyamide, polyethylene, aluminum foil and the like.

Further, in the above-described embodiment, the pouch 10 with a gusset has been described as a pouch to which a spout is not attached, but the spout may be attached at an arbitrary position.
Further, in the above-described embodiment, the pouch 10 with a gusset has been described as being formed as a so-called horizontal gusset type pouch having gusset portions formed on both the left and right sides thereof, but the specific embodiment of the pouch 10 with a gusset is described above. For example, a gusset portion may be formed on the bottom side of the gusseted pouch 10.
Further, in the above-described embodiment, as shown in FIG. 8A, the front side film 30, the back side film 40, and the gusset film 50 have been described as separate members, but FIGS. 8B and 8A have been described. As shown in (c), FIG. 8 (d), and FIG. 8 (e), at least one of the gusset film 50 may be one film continuous with at least one of the front side film 30 and the back side film 40. .. Alternatively, as shown in FIG. 8C, the front side film 30, the back side film 40, and the gusset portion film 50 may be one continuous film.
That is, in the pouch 10 and the pouch intermediate 11, a part of the front side film 30 and / and the back side film 40 is folded inward to form a gusset portion (corresponding to the gusset portion film 50), and the connection portion of the film is welded. It is also possible to form a seal portion.
In the examples shown in FIGS. 8 (b), 8 (c), 8 (d), and 8 (e), the front side film 30 is a portion where one continuous film is bent on the outside in the left-right direction. It becomes a side film connecting portion 70 which connects the back side film 40 and the gusset portion film 50.
In this specification, terms such as "top", "bottom", "left and right sides", "top seal", "side seal", and "bottom seal" are used to indicate top, bottom, left, and right. The direction of installation of the gusseted pouch 10 at the time of use, display, transportation, etc. is not limited.

Further, in the above-described embodiment, each of the fixing portions 25, 26, 27, 29 has been described as being a heat welding portion formed by heat welding each film, but the fixing portions 25, 26, 27, 29 The specific embodiment is not limited to the above, and may be, for example, fixed between the films using an adhesive.
Further, in the above-described embodiment, the fixed portions 25, 26, and 27 are edge edges (that is, crease lines of the gusset portion film 50) closer to the central region 23c side of the first gusset region 23a or the second gusset region 23b. It has been described that it is formed in contact with or in close proximity to 51) over the entire area or almost the entire area of each of the fixed portions 25, 26, 27. However, the fixing portions 25 and 26 may be partially formed in contact with or close to the edge of the central side region 23c side of the first gusset region 23a, and the fixing portion 27 may be partially formed in the second gusset region. It may be partially formed in contact with or close to the edge of the central region 23c of 23b.
On the other hand, as in the above-described embodiment, the first front-side fixing portion 25 and the first back-side fixing portion 26 are formed over the entire area or almost the entire area (in the present embodiment, the entire area) of the first gusset region 23a in the left-right direction. In this case, when the left and right side seal portions 122b are brought inward by the gripper G during filling of the contents, deformation (bending) of the films 30, 40, and 50 located in the first gusset region 23a can be suppressed, and the filling opening 24 It is more preferable because it can improve the openness of the film.
Further, in the above-described embodiment, the fixed portions 25, 26, and 27 are edge edges (that is, crease lines of the gusset portion film 50) closer to the central region 23c side of the first gusset region 23a or the second gusset region 23b. Although it has been described as being formed in contact with or in close proximity to 51), as shown in FIGS. 7 (a) and 7 (b), the fixed portions 25, 26, and 27 are formed in the first gusset region 23a. Alternatively, it may be formed away from the edge of the second gusset region 23b closer to the central region 23c side.
Further, in the above-described embodiment, each of the fixing portions 25, 26, and 27 has been described as being continuously formed on the side seal portion 22b, but as shown in FIG. 7B, each fixing portion 25 has been described. , 26, 27 may be formed apart from the side seal portion 22b.
Further, in the above-described embodiment, each of the fixing portions 25, 26, 27, 29 has been described as being formed over the entire area of the planned top seal portion 23 in the vertical direction, but the fixing portions 25, 26, 27 have been described. , 29 may have any vertical width.
Further, in the above-described embodiment, each of the fixing portions 25, 26, 27, and 29 has been described as being formed in contact with the upper end edge of each film, but at a position separated downward from the upper end edge of each film. Each fixed portion 25, 26, 27, 29 may be formed.
Further, in the above-described embodiment, it has been described that the third fixing portion 29 is continuously formed on the inner sealing portion 28 over the entire area in the left-right direction of the inner film 60, but the third fixing portion 29 is described. It may be partially formed in a portion closer to the first gusset region 23a than the inner seal portion 28. Further, the third fixing portion 29 may be any as long as it fixes the inner film 60 and at least one of the front side film 30 or the back side film 40 on the first gusset region 23a side of the inner sealing portion 28. For example, as shown in FIG. 7C, it may be formed at a position away from the inner seal portion 28.
Further, in the above-described embodiment, when the gusseted pouch 10 is viewed in a plan view as shown in FIGS. 2 and 5, the formation region of the first front side fixing portion 25 and the formation region of the first back side fixing portion 26 overlap. However, the forming region of the first front-side fixing portion 25 and the forming region of the first back-side fixing portion 26 may be deviated from each other. In addition, when the forming region of the first front side fixing portion 25 and the forming region of the first back side fixing portion 26 coincide with each other, the first front side fixing portion 25 and the first back side fixing portion 25 and the first back side fixing portion are subjected to one heat welding treatment. It is preferable because both of 26 can be formed together.

10 ・ ・ ・ Pouch 11 ・ ・ ・ Pouch intermediate 21 ・ ・ ・ Contents storage part 22 ・ ・ ・ Seal part 22a ・ ・ ・ Top seal part 22b ・ ・ ・ Side seal part 22c ・ ・ ・ Bottom seal part 23 ・ ・・ Top seal planned part 24 ・ ・ ・ Filling opening 25 ・ ・ ・ 1st front side fixing part 26 ・ ・ ・ 1st back side fixing part 27 ・ ・ ・ 2nd fixing part 28 ・ ・ ・ Inner seal part 29 ・ ・ ・ No. 3 Sticking part 30 ・ ・ ・ Front side film 40 ・ ・ ・ Back side film 50 ・ ・ ・ Film for gusset part 51 ・ ・ ・ Fold line 60 ・ ・ ・ Inner film 61 ・ ・ ・ Fold line 70 ・ ・ ・ Side film connection part

Claims (10)

The gusset film is placed between the front side film and the back side film in a folded state, and the pouch intermediate of the gusseted pouch having a top seal planned portion that functions as a filling opening at a position corresponding to the top seal portion. The body
The planned top seal portion is a first gusset on both the left and right sides as a region inside the left and right side film connecting portions connecting the front side film, the back side film, and the gusset portion film on both left and right directions. It has a region and a second gusset region, and a central region located between the first gusset region and the second gusset region in the left-right direction.
In the first gusset region, a first front side fixing portion in which the front side film and the gusset portion film are fixed, and a first back side fixing portion in which the back side film and the gusset portion film are fixed are formed. ,
In the second gusset region, a second fixing portion is formed in which one of the front side film or the back side film and the gusset portion film are fixed, and the front side film or the other side film and the gusset are formed. A pouch intermediate characterized in that it is not adhered to a part film. The pouch intermediate according to claim 1, wherein the side film connecting portion is a side seal portion in which the front side film, the back side film, and the gusset portion film are heat-welded on both sides in the left-right direction. The intermediate pouch according to claim 1 or 2, wherein the second fixing portion is formed in contact with or close to the edge of the second gusset region closer to the central region side. body. The side film connecting portion on the second gusset region side is a side seal portion in which the front side film, the back side film, and the gusset portion film are heat-welded.
The pouch intermediate according to any one of claims 1 to 3, wherein the second fixing portion is continuously formed on the side seal portion. A first aspect of the present invention, wherein the first front-side fixing portion and the first back-side fixing portion are formed in contact with or close to the edge of the first gusset region closer to the central region side. The pouch intermediate according to any one of claims 4. The side film connecting portion on the first gusset region side is a side seal portion in which the front side film, the back side film, and the gusset portion film are heat-welded.
The pouch intermediate according to any one of claims 1 to 5, wherein the first front-side fixing portion and the first back-side fixing portion are continuously formed on the side seal portion. One of claims 1 to 6, wherein the first front-side fixing portion, the first back-side fixing portion, and the second fixing portion are heat-welded portions in which the films are heat-welded. The pouch intermediate described. In the central region, the inner film is arranged in a folded state between the front side film and the back side film.
The inner film is arranged with its crease line facing the first gusset region side, and its left and right ends are arranged with its left and right ends facing the second gusset region side.
One of the left and right ends of the inner film is heat-welded to the inner surface of the front side film by the inner seal portion, and the other of the left and right end portions is heat-welded to the inner surface of the back side film by the inner seal portion. The pouch intermediate according to any one of claims 1 to 7, characterized in that. In the central region, a third fixing portion is formed on the first gusset region side of the inner sealing portion, in which at least one of the front side film or the back side film and the inner film are fixed. The pouch intermediate according to claim 8. A pouch filling method that fills a gusseted pouch with its contents.
After filling the contents from the filling opening of the pouch intermediate according to any one of claims 1 to 9, each film is heat-welded at the planned top seal portion to form the top seal portion. , A pouch filling method comprising closing the filling opening.