WO2017056558A1 - Method for manufacturing pouch container packaging material, device for manufacturing pouch container packaging material, and intermediate product of pouch container packaging material - Google Patents

Abstract

To provide a method for manufacturing a pouch container packaging material, whereby it is possible to more efficiently manufacture a pouch container packaging material which can be independent and which is used in a pouch container whereby discomfort during gripping can be suppressed, a device for manufacturing a pouch container packaging material, and an intermediate product of a pouch container packaging material. This method for manufacturing a pouch container packaging material is provided with: a first step for forming a cylindrical film 1 having a vertical seal part 20; a second step for forming a first bottom seal part 21; a third step having a process for forming a pair of main film parts 10 by discharging a portion of gas in the cylindrical film 1, a process for forming a transition part 12 expanded by residual gas, and a process for causing both ends of the first bottom seal part 21 to approach each other while discharging the gas in the transition part 12 and thereby folding the first bottom seal part 21 and the transition part 12 into a flat shape along the pair of main film parts 10 so divide the first bottom seal part 21 and the transition part 12 in two; a fourth step for forming a pair of second bottom seal parts 22; and a fifth step for cutting the cylindrical film 1 so as to vertically cut the pair of second bottom seal parts 22.

Description

Pouch container packaging method, pouch container packaging device, and pouch container intermediate product

The present invention relates to a method for manufacturing a packaging material for a pouch container, a manufacturing apparatus for a packaging material for a pouch container, and an intermediate product of the packaging material for a pouch container.

Pouch containers are widely used as containers for beverages such as sports drinks, foods such as ice cream and jelly, and medical liquids. FIG. 23 shows an example of a conventional method for producing a packaging material for a pouch container (see Patent Document 1). In the manufacturing method shown in the figure, first, as shown in FIG. 4A, the both ends of the belt-like film are joined together to form a cylindrical film 91 having a vertical seal portion 92. Next, as shown in FIG. 2B, the first bottom seal portion 93 is formed by joining one axial end of the tubular film 91.
Next, as shown in FIG. 3C, a pair of extending portions 94 extending to both sides along the first bottom seal portion 93 is formed by pushing the bottom portion of the tubular film 91 wide. Next, as shown in FIG. 4D, the base portions of the pair of extending portions 94 are joined to form a pair of second bottom seal portions 95, and the surplus portions of the pair of extending portions 94 are removed. Remove by cutting. And as shown to the figure (e), while fixing the spout 97 to the cylindrical film 91 by forming the top seal | sticker part 96 in the state which has arrange | positioned the spout 97 at the other end of the cylindrical film 91, The cylindrical film 91 is sealed. By passing through the above process, the packaging material X for pouch containers is obtained.

The pouch container manufactured using the packaging material X for the pouch container has a flat form in which the first bottom seal portion 93 and the pair of second bottom seal portions 95 are flat due to the weight of the contents. Accordingly, the pouch container can be displayed in a self-standing state on a shelf surface of a display shelf. Further, the side surface of the pouch container has no prominent protrusions other than the vertical seal portion 92. For this reason, when a user holds the pouch container, discomfort such as pain can be prevented from being given to the user.

However, in the method of manufacturing the packaging material X for a pouch container, as shown in FIG. 23 (c), a tubular film having a shape inflated into a substantially cylindrical shape with a pair of extending portions 94 extending on both sides. It is necessary to hold 91. And it is forced to maintain the said form until it complete | finishes formation of a pair of 2nd bottom seal part 95 and cutting | disconnection of a pair of extension part 94 in the figure (d). These processes are naturally carried out one by one, for example, manually, making full automation of the production line difficult.

JP 2002-308289 A

The present invention has been conceived under the circumstances described above, and more efficiently manufactures a packaging material for a pouch container that can be used independently and that can suppress discomfort when grasped. It is an object of the present invention to provide a method for manufacturing a packaging material for a pouch container, an apparatus for manufacturing the packaging material for a pouch container, and an intermediate product of the packaging material for a pouch container.

A method for manufacturing a packaging material for a pouch container provided by the first aspect of the present invention is a method for manufacturing a packaging material for a pouch container used in a pouch container, and the both side ends of a strip-like film extending in a first direction are connected to each other. A first step of forming a tubular film having a vertical seal portion by bonding, and a second step of forming a first bottom seal portion that crosses the tubular film in a second direction perpendicular to the first direction. And by discharging part of the gas in the tubular film, the first film is separated from the first bottom seal portion in the first direction and faces each other in the second direction, and the first direction and the second direction. A treatment for forming a pair of main film portions having a width direction in a third direction that is perpendicular to any of the directions, and the gas remaining between the pair of main film portions and the first bottom seal portion. The process of forming the inflated transition part and the first bottom seal part and the transition part are bisected by bringing both ends of the first bottom seal part close to each other while discharging the gas in the transition part A third step having a process of folding the pair of main film portions into a flat shape, and extending in the third direction to the bifurcated transition portion and intersecting the vertical seal portion and the first bottom seal portion. A fourth step of forming a pair of second bottom seal portions, and a fifth step of cutting the tubular film along the third direction so as to cut the pair of second bottom seal portions longitudinally. It is characterized by that.

According to a preferred embodiment of the present invention, the method further includes a step of forming a vent hole for venting the inside and outside of the transition portion before the third step. While discharging the gas in the transition part, the first bottom seal part and the transition part are folded into a flat shape along the pair of main film parts so as to bisect, in the fourth step, the first direction in the first direction The pair of second bottom seal portions are formed at a position between the vent hole and the pair of main film portions.

According to a preferred embodiment of the present invention, the step of forming the vent hole is performed by leaving an unsealed portion that crosses the first bottom seal portion in the first direction in the second step.

Depending on a preferred embodiment of the present invention, in the step of forming the vent hole, a pair of the vent holes spaced apart from each other on both ends of the first bottom seal portion is formed.

According to a preferred embodiment of the present invention, in the third step, the pressing film is held in a state where the cylindrical film is sandwiched between a supporting tool and a pressing tool having a supporting surface that extends in the first direction and the third direction. The process of forming the pair of main film portions and the transition by degassing the pair of main films by moving the tool relative to the first bottom seal portion in the first direction. A process of folding the first bottom seal part and the transition part into a flat shape by rotating the pressing tool around an axis extending in the third direction with respect to the support tool after performing the process of forming the portion. I do.

Depending on a preferred embodiment of the present invention, in the second step, both ends of the first bottom seal portion are disposed at positions retracted from the vertical seal portion.

According to a preferred embodiment of the present invention, after the step of cutting the tubular film, the end of the tubular film on the opposite side of the first bottom seal portion in the first direction, The method further includes the step of attaching a spout at a position where the vertical seal portion is avoided in the three directions.

An apparatus for manufacturing a packaging material for a pouch container provided by the second aspect of the present invention is a manufacturing apparatus for a packaging material for a pouch container used for a pouch container, and the both ends of a belt-like film extending in a first direction are connected to each other. A first process part for forming a cylindrical film having a vertical seal part by bonding, and a second bottom part for forming a first bottom seal part crossing the cylindrical film in a second direction perpendicular to the first direction. By exhausting a part of the gas in the process part and the tubular film, the first part is separated from the first bottom seal part in the first direction and faces each other in the second direction, and the first direction and the A process of forming a pair of main film portions whose width direction is a third direction perpendicular to any of the second directions, and the remaining gas while connecting the pair of main film portions and the first bottom seal portion In The first bottom seal part and the transition part are bisected by the process of forming the inflated transition part and bringing both ends of the first bottom seal part close to each other while discharging the gas in the transition part And a third process part for performing a flat folding process along the pair of main film parts, and the transition part divided into two, extending in the third direction, and the vertical seal part and the first bottom seal. A fourth process part for forming a pair of second bottom seal parts intersecting with the part, and a fifth process for cutting the tubular film along the third direction so as to longitudinally cut the pair of second bottom seal parts. And a section.

According to a preferred embodiment of the present invention, the tubular film before being processed in the third process part further includes a vent hole forming process part for venting the inside and outside of the transition part, The third process part is folded into a flat shape along the pair of main film parts so as to bisect the first bottom seal part and the transition part while discharging the gas in the transition part from the vent hole, The four process portions form the pair of second bottom seal portions at positions between the vent and the pair of main film portions in the first direction.

According to a preferred embodiment of the present invention, the second process part includes the vent hole forming process part by leaving an unsealed part crossing the first direction in the first bottom seal part.

According to a preferred embodiment of the present invention, the second process part forms a pair of the vent holes spaced apart from each other on both ends of the first bottom seal part.

According to a preferred embodiment of the present invention, the fourth process section includes a support having a support surface extending in the first direction and the third direction, and a pressing tool disposed to face the support surface. The pair of main films are moved relative to each other in a direction approaching the first bottom seal portion in the first direction in a state where the cylindrical film is sandwiched between the support surface and the presser. After performing the process of forming the pair of main film parts and the process of forming the transition part by degassing the gap, the pressing tool is moved around the axis extending in the third direction with respect to the support tool. By rotating, the first bottom seal part and the transition part are folded into a flat shape.

The intermediate product of the packaging material for a pouch container provided by the third aspect of the present invention is an intermediate product of the packaging material for a pouch container used for the pouch container, and a cylindrical film having the first direction as an axial direction. A first bottom seal portion that traverses in a second direction perpendicular to the first direction at one end of the tubular film, and is located laterally with respect to the second direction center of the tubular film, and the tubular film And a vent hole communicating with the inside and outside of the film.

According to a preferred embodiment of the present invention, the vent is constituted by an unsealed portion that crosses the first bottom seal portion in the first direction.

Depending on a preferred embodiment of the present invention, a pair of the vent holes arranged at both ends of the first bottom seal portion are provided.

Depending on preferable embodiment of this invention, the said cylindrical film is formed by providing the vertical seal | sticker part to which the width direction both ends of the strip | belt-shaped film were joined, The said vertical seal | sticker part of the said cylindrical film is formed. It is located on the side of the second direction center.

According to the present invention, the two second bottom seal portions are formed in a state where the first bottom seal portion and the transition portion are folded in half. For this reason, in the process of forming the second bottom seal portion, etc., there is no need to swell or stand up the cylindrical film in a substantially cylindrical shape. Furthermore, the processing of the folded tubular film is suitable for being performed on an automated production line. And in this invention, while discharging | emitting the gas (air) between a pair of said main film part, it folds so that the said transition part may be divided into two from the state which the said transition part was expanded. According to such a method, the transition part can be smoothly folded while avoiding the distortion part or the first bottom seal part from being unduly distorted or bent.
Therefore, the manufacturing efficiency of the packaging material for pouch containers can be increased. And the said pouch container manufactured using the said packaging material for pouch containers formed through this process can be made to stand on a flat shelf board etc., and suppresses the discomfort at the time of holding | grip. be able to.

Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a whole perspective view which shows the 1st process part of the manufacturing apparatus of the packaging material for pouch containers based on 1st Embodiment of this invention. It is a perspective view which shows the manufacturing method of the pouch container packaging material based on 1st Embodiment of this invention. (A) is a principal part expanded sectional view which shows the cylindrical film in the manufacturing method of the pouch container packaging material based on 1st Embodiment of this invention, (b) is a principal part top view. It is a perspective view which shows the 2nd process part of the manufacturing apparatus of the pouch container packaging material based on 1st Embodiment of this invention. It is a top view which shows the cylindrical film of the state which completed the process shown in FIG. It is a top view which shows the intermediate product of the packaging material for pouch containers based on 1st Embodiment of this invention. FIG. 5 is a perspective view showing (a) to (e) of a third process section of the manufacturing apparatus for a pouch container packaging material according to the first embodiment of the present invention. FIG. 6 is a perspective view showing (f) to (j), the fourth process part and the fifth process part of the third process part of the pouch container packaging material manufacturing apparatus based on the first embodiment of the present invention. It is principal part sectional drawing which shows the intermediate product of the state of (i) of the 3rd process of FIG. It is a principal part side view which shows the intermediate product of the state of (i) of the 3rd process of FIG. It is a principal part side view which shows the intermediate product of the state of (j) of the 3rd process of FIG. It is a top view which shows the intermediate product of the state of (j) of the 3rd process of FIG. It is a top view which shows the packaging material for pouch containers based on 1st Embodiment of this invention. It is sectional drawing which follows the XIV-XIV line | wire of FIG. It is sectional drawing which follows the XV-XV line | wire of FIG. It is sectional drawing which follows the XVI-XVI line of FIG. It is a perspective view which shows the pouch container based on 1st Embodiment of this invention. It is a front view which shows the pouch container of FIG. It is a side view which shows the pouch container of FIG. It is a principal part top view which shows the modification of the intermediate product of the packaging material for pouch containers based on 1st Embodiment of this invention. It is a principal part perspective view which shows the modification of the manufacturing apparatus of the packaging material for pouch containers based on 1st Embodiment of this invention. FIG. 32 is a cross-sectional view taken along line XXII-XXII in FIG. 31. (A)-(e) is a perspective view which shows an example of the manufacturing method of the conventional packaging material for pouch containers.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

A method for manufacturing a packaging material for a pouch container, an apparatus for manufacturing the packaging material for a pouch container, and an intermediate product of the packaging material for a pouch container according to the first embodiment of the present invention will be described below with reference to FIGS. .

In these drawings, the axial direction of the tubular film 1 described later, that is, the direction in which the vertical seal portion 20 extends is defined as the x direction. Moreover, the width direction of the tubular film 1 which will be in the folded state later is defined as the y direction. The direction in which the first bottom seal portion 21 extends is defined as the z direction. The x direction corresponds to the first direction in the present invention, the z direction corresponds to the second direction in the present invention, and the y direction corresponds to the third direction in the present invention. In the subsequent steps, the operation and each part will be described based on these directions.

FIG. 1 is an overall perspective view showing an apparatus for producing a packaging material for a pouch container according to the present embodiment. The packaging material manufacturing apparatus D1 for the pouch container of the present embodiment includes a first process part M1, a second process part M2, a third process part M3, a fourth process part M4, and a fifth process part M5. The first process part M1, the second process part M2, the third process part M3, the fourth process part M4, and the fifth process part M5 are integrated with the functions to be performed by any of the plurality of process parts. Alternatively, it may be integrated into one apparatus part, or any one process part may be distributed over a plurality of apparatus parts.

First, the first step is performed. FIG. 2 is a perspective view showing the first process section M1 of the packaging material manufacturing apparatus D1 for pouch containers. The 1st process part M1 is an apparatus part which performs a 1st process. The film roll 71 supplies the belt-like film 1A as a material, and is located on the most upstream side in the production line shown in FIG. The tape roll 72 supplies the sealing tape 20a used for this manufacturing method.

Here, the belt-like film 1A is usually composed of a resin film. The resin film is required to have basic performance as a package, such as impact resistance, wear resistance, and heat resistance. Moreover, since each said seal | sticker part is normally formed by heat seal, the heat seal property is also requested | required of a sheet | seat. As the sheet, a multilayer sheet having a base film layer and a sealant layer that imparts heat sealability is suitable. When high gas barrier properties and light shielding properties are required, the base film layer and the sealant layer It is preferable to provide a barrier layer therebetween. In addition, you may provide barrier property to the base film layer itself. In this case, a multilayer sheet having a barrier layer and a sealant layer is obtained using the barrier layer as a base film layer.

Here, the constituent materials of the base film layer, the sealant layer, and the barrier layer are exemplified. In addition, lamination | stacking of these each layer can be performed by the conventional lamination method, for example, the co-extrusion lamination, the dry lamination by an adhesive agent, the heat lamination which adhere | attaches with a heat | fever by pinching | interposing a heat adhesive layer.

As the film constituting the base film layer, polyester (polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polycarbonate (PC), etc.), polyolefin (polyethylene (PE), polypropylene ( PP) etc.), polyamide (nylon-6, nylon-66 etc.), polyacrylonitrile (PAN), polyimide (PI), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polymethyl methacrylate (PMMA), poly A stretched or unstretched film of one layer or two or more layers composed of ether sulfone (PES) or the like can be exemplified.

The film constituting the sealant layer includes low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-propylene copolymer (EP), unstretched polypropylene (CPP), biaxially stretched nylon (ON) , Ethylene-olefin copolymer, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-vinyl acetate copolymer (EVA), etc. The stretched or unstretched film can be exemplified.

The barrier layer may be a metal thin film such as aluminum, a resin film such as vinylidene chloride (PVDC) or ethylene-vinyl alcohol copolymer (EVOH), or any synthetic resin film (for example, a base film layer). ), And a film obtained by vapor-depositing (or sputtering) an inorganic oxide such as aluminum, aluminum oxide, or silica.

The belt-like film 1A can be provided with a printed layer (not shown) for displaying the product name of the contents, the product description such as raw materials and usage precautions, and various other designs. For example, the printing layer can be formed on the inner surface of the base film layer by a known method such as gravure printing. In addition, the structure of 1 A of strip | belt-shaped films mentioned above is inherited by the cylindrical film 1 and the main film part 10 etc. which are mentioned later.

FIG. 3A is an enlarged cross-sectional view of a main part of a cross section perpendicular to the x direction showing the strip-shaped film 1A after undergoing a joining step described later in FIG. In the illustrated example, the strip film 1 </ b> A includes a base film layer 101, a sealant layer 102, a barrier layer 103, and an intermediate layer 104. The base film layer 101 constitutes the outermost layer of the strip film 1 </ b> A, and the sealant layer 102 constitutes the innermost layer of the tubular film 1. The barrier layer 103 and the intermediate layer 104 are interposed between the base film layer 101 and the sealant layer 102. In this example, the intermediate layer 104 is disposed between the sealant layer 102 and the barrier layer 103. The intermediate layer 104 is a layer made of the same material as the base film layer 101, for example.

As the seal tape 20a, a generally known one is used. For example, the seal tape 20a is a single-layer or multi-layer belt-like film in which a film made of the same material as the sealant layer described above constitutes the front and back surfaces. In the case of a multi-layer film, a layer structure in which the above-described base material layer and / or barrier layer constitutes the center layer, and the above-described sealant layer constitutes the front and back layers is preferable. At this time, the width direction edge of the belt-like film 1A is preferably configured such that the sealant layers on the front and back surfaces are joined to each other and the edge of the center layer such as the base material layer does not face the outside.

2, the belt-like film 1A sent out from the film roll 71 is conveyed toward the downstream side of the production line. The sealing tape 20a is sent out from the tape roll 72 along the conveyance path. Furthermore, at the position where the seal tape 20a is supplied, the belt-like film 1A is rounded so that both end edges are close to each other. Then, using the seal bar 731, the inner surfaces of both ends of the strip film 1 </ b> A and the seal tape 20 a are joined by heat sealing in a state where the both ends of the strip film 1 </ b> A are substantially in contact with each other or are adjacent to each other or overlap. Then, the sealing portion is cooled by the cooling portion 732, so that the vicinity of both end edges of the belt-like film 1A and the sealing tape 20a are more firmly joined. Thereby, the cylindrical film 1 which has the vertical seal | sticker part 20 (refer Fig.3 (a)) extended in a longitudinal direction (axial direction) is obtained. Note that the vertical seal portion 20 is not limited to a configuration in which the seal tape 20a and the vicinity of both end edges of the strip-shaped film 1A are joined. For example, the sealant layers on the inner surfaces near both end edges of the strip-shaped film first main plate portion 1A. A configuration in which the seal tape 20a is not used may be employed by joining them together in a state in which they are combined (so-called palm-attached shape). In the present embodiment, as shown in FIG. 3A, a case where the vicinity of both end edges of the strip-shaped film 1A is joined to the seal tape 20a in a state where they are overlapped with each other will be described as an example.

Next, the position of the seal tape 20a in the y direction is shifted while the cylindrical film 1 is folded flat by the shift roller 751 and the shift roller 752. Specifically, immediately after the vertical seal portion 20 is formed by the seal bar 731 and the cooling portion 732, the seal tape 20a is located at the approximate center of the tubular film 1 in the y direction. FIG. 3B is a main part plan view showing the tubular film 1 on the downstream side in the x direction of the shift roller 752. As shown in FIG. 5B, the vertical seal portion 20 and the seal tape 20a are moved to one side in the y direction by the shift roller 751 and the shift roller 752.

By passing through the shift roller 751 and the shift roller 752, the tubular film 1 becomes a flat belt shape having the fold lines 18 at both ends. In the present embodiment, the belt-shaped film 1 </ b> A having the belt shape is temporarily wound around an intermediate roll 711, for example. Even if the winding causes a situation in which the production must be stopped in one of the first step shown in FIG. 2 and the second step shown in FIG. 4 and the subsequent steps, the process in the other can be continued. it can.

Next, the second step is performed. FIG. 4 is a perspective view showing a second process part M2 of the packaging material manufacturing apparatus D1 for a pouch container that performs the second process. First, the strip-shaped cylindrical film 1 folded flatly from the intermediate roll 711 is sequentially sent out. Subsequently, the tubular film 1 is reversely folded by a plurality of reversing rollers 753 so as to be folded back in a direction different from the state fed from the intermediate roll 711 by 90 degrees. In the present embodiment, the vertical seal portion 20 is moved to a position shifted from the center in the width direction (y direction) of the tubular film 1 by the shift roller 751 and the shift roller 752. For this reason, in the cylindrical film 1 that has passed through the plurality of reversing rollers 753, the vertical seal portion 20 is shifted to one side (upper side in the drawing) with respect to the center in the z direction of the cylindrical film 1. In addition, the cylindrical film 1 reversed and folded via the plurality of reversing rollers 753 is folded at both ends in the z direction. However, the folded portion is a portion that appears on the front and back surfaces of the packaging material A1 for the pouch container to be described later through a process to be described later. For this reason, the plurality of reversing rollers 753 reversely fold the tubular film 1, but do not cause complete creases at both ends of the tubular film 1 in the z direction. And the cylindrical film 1 is partially joined by the seal bar 76, for example by heat sealing along the up-down direction in the figure. Thereby, the 1st bottom seal part 21 is formed in the cylindrical film 1. FIG. Immediately after the formation of the first bottom seal portion 21, it is preferable to cool the first bottom seal portion 21 by blowing cool air, for example, by the cooling portion 77. When performing reverse folding, a so-called tetra guide (not shown) may be used instead of the plurality of reverse rollers 753 or as an auxiliary tool for the plurality of reverse rollers 753.

FIG. 5 shows a part of the tubular film 1 after the first bottom seal portion 21 is formed. In the present embodiment, the tubular film 1 is provided with a pair of bottom air holes 25. The bottom ventilation hole 25 is a hole through which a space generated inside the tubular film 1 communicates with the outside. In the illustrated example, the pair of bottom air holes 25 are provided at positions near the center in the z direction of the tubular film 1 and near both ends in the z direction. Further, each bottom vent hole 25 is formed by setting a portion that is not partially heat sealed in the heat sealing by the seal bar 76 in FIG. 4. The unsealed portion constituting the bottom vent hole 25 crosses the first bottom seal portion 21 in the x direction.

Next, the tubular film 1 is cut by the cutter 79 at a position overlapping a part of the first bottom seal portion 21. In the present embodiment, the case where the cutter 79 shown in FIG. 5 is used will be described as an example. As understood from FIGS. 4 and 5, the first bottom seal portion 21 remaining in the previous cutting is located on the downstream side in the x direction. The cutter 79 has a right edge in FIG. 5 that is straight, and a projection 791 is provided on the left edge. The protrusion 791 is provided substantially at the center of the cutter 79 in the z direction and protrudes downstream in the x direction. The tubular film 1 is cut by the cutter 79 so that the right end edge of the cutter 79 overlaps the left end portion of the first bottom seal portion 21 in the drawing. Further, the protrusion 791 is overlapped with the fold line 18 in the z direction. As a result, the cut tubular film 1 is formed so that the notch corresponding to the protrusion 791 coincides with the fold line 18 in the z direction. In the packaging material A1 for a pouch container to be described later, the fold line 18 becomes a side edge. For this reason, the said notch becomes the below-mentioned notch part 17 made into the shape which chamfered the side edge upper part in packaging material A1 for pouch containers mentioned later. By cutting the tubular film 1 with the cutter 79, an intermediate product C1 of a packaging material for a pouch container, which will be described later, is obtained. As shown in FIG. 4, before and after cutting by the cutter 79, it is preferable to hold the first bottom seal portion 21 of the tubular film 1 (intermediate product C1) by, for example, a holder 801 from the downstream side in the x direction.

FIG. 6 shows an intermediate product of the packaging material for the pouch container obtained by cutting the tubular film 1 with the cutter 79. As described above, the intermediate product C1 of the present embodiment includes the tubular film 1, the fold line 18, the vertical seal portion 20, the first bottom seal portion 21, and the pair of bottom vent holes 25. In the present embodiment, the intermediate product C <b> 1 has a notch 17. The notch 17 is a cut mark cut by the protrusion 791 in the cutting by the cutter 79. One end of the fold line 18 reaches the notch 17.

FIG. 7 is a perspective view showing a part of the third process section M3 of the pouch container packaging material manufacturing apparatus D1.
As shown in FIG. 6A, the expansion bar 811 is moved closer while the intermediate product C1 is held.
The expansion bar 811 is configured to have a pair of bars that can be moved toward and away from each other in the y direction, for example. Next, as shown in FIG. 5B, a part of the expanding bar 811 is inserted into the portion of the tubular film 1 of the intermediate product C1 opposite to the side where the first bottom seal portion 21 is formed. . As described above, the portion folded by the plurality of reversing rollers 753 is not given a complete crease. For this reason, the tubular film 1 is not in a completely flat state and is in a state where it is easy to open. Therefore, the spreading bar 811 can be easily inserted into the tubular film 1. Next, as shown in FIG. 3C, the pair of bars of the expanding bar 811 are separated from each other. Thereby, the cylindrical film 1 is expanded in the y direction. Next, as shown in FIG. 4D, the expanded side portion of the tubular film 1 is folded over the entire length in the y direction by the pressing bar 82. And as shown to the figure (e), the y direction both ends of the expanded part among the cylindrical films 1 are hold | maintained with the holder 802, for example. Thereby, the expansion of the intermediate product C1 is completed. Note that the process shown in FIG. 7 is not an essential step for the third step in the present invention. As long as the intermediate product C1 can be prepared in a state where the processes and processes shown in FIG. 8 and subsequent figures can be appropriately executed, a process or a manual process may be employed depending on other apparatus configurations.

FIG. 8 is a perspective view showing a part of the third process part M3, the fourth process part M4, and the fifth process part M5 of the packaging material manufacturing apparatus D1 for pouch containers. In the example shown in the figure, for example, the intermediate product C1 held by the holding tool 802 in FIG. 7E is set in the posture shown in the third process section M3 (f) in FIG. This posture is a posture in which the x direction is along the vertical direction, and is an example of a posture for performing the steps described below. The tubular film 1 in this state is raised, and the end of the intermediate product C1 opposite to the first bottom seal portion 21 is held by, for example, the holder 803 as shown in the third process part M3 (g). To do. The holder 803 holds the end of the intermediate product C1 opposite to the first bottom seal portion 21 over the entire length in the y direction. Next, as shown in the third process part M3 (h), the vicinity of the portion held by the holder 803 in the intermediate product C1 is sandwiched between the support 831 and the presser 841.

The support 831 and the presser 841 are an example of a device configuration for performing the third step. The support 831 has a support surface 832. The support surface 832 is a plane extending along the x direction and the y direction. The presser 841 is disposed to face the support surface 832 of the support 831 in the z direction. The presser 841 has, for example, a flat plate member. The flat plate member is movable in the x direction in an upright posture with respect to the xy plane. The flat plate member is rotatable around an axis extending in the y direction at a position to be described later. For such movement and rotation of the flat plate member, a known mechanism such as a known drive source such as a motor or a cylinder, a rack and pinion mechanism, a crank mechanism, a link mechanism, or the like can be appropriately employed.

After the intermediate product C1 is sandwiched between the support surface 832 of the support 831 and the presser 841 as shown in the third process part M3 (h), as shown in the third process part M3 (i) The presser 841 is lowered with respect to 831 and the tubular film 1. At this time, one end of the presser 841 slides with respect to the intermediate product C1. For this reason, the gas (air) in the tubular film 1 sandwiched between the support 831 and the presser 841 is discharged from the bottom vent 25 described above, and the portions of the tubular film 1 that are opposed to each other in the z direction are arranged. To be close. Thereby, intermediate product C1 becomes a form which has a pair of main film part 10 and transition part 12. FIG. The pair of main film portions 10 are portions folded by the support tool 831 and the pressing tool 841, face each other in the z direction, and have the y direction as the width direction. One of the pair of main film portions 10 has a vertical seal portion 20. Further, as described above, although the vertical seal portion 20 is included in any of the main film portions 10, it is not located at the center in the y direction, which is the width direction of the main film portion 10, and is shifted from the center. In position. The transition portion 12 is interposed between the pair of main film portions 10 and the first bottom seal portion 21 and connects them. The transition part 12 is a part of the tubular film 1 where the pressing tool 841 has not yet passed. For this reason, gas (air) remains in the transition part 12 and is inflated. In addition, since the pair of fold lines 18 were provided at both ends of the tubular film 1 when wound on the intermediate roll 711, the tubular film 1 is formed on the pair of fold lines 18 in FIG. You can expect the effect of being folded along smoothly.

FIG. 9 is a cross-sectional view of an essential part showing a cross section in the xy plane passing through the seal tape 20a of the intermediate product C1 in the state shown in FIG. 8 (i). As shown in the figure, in the vertical seal portion 20, a part of the tubular film 1 and the seal tape 20a overlap each other. For this reason, the vertical seal part 20 is a highly rigid part. Thereby, the 1st bottom seal part 21 becomes the shape pushed by the vertical seal part 20 to the left in a figure, and can take the attitude | position slightly inclined with respect to the x direction. FIG. 10 is a side view of an essential part showing the intermediate product C1, the support 831 and the presser 841 in the state shown in FIG. 8 (i). As shown in the figure, the support 831 has a flat plate shape having a support surface 832 extending along the xy plane. For this reason, the first bottom seal portion 21 of the intermediate product C1 is inclined with respect to the z direction.

Next, as shown in the third process part M3 (j) of FIG. 8, the pressing tool 841 is rotated around an axis extending in the y direction. FIG. 11 is a side view of a main part showing the intermediate product C1, the support 831, and the presser 841 in the state shown in the third process part M3 (j). By the rotation of the pressing tool 841, the pressing tool 841 and the support tool 831 are closed with the transition part 12 and the first bottom seal part 21 of the intermediate product C1 interposed therebetween. At this time, the gas (air) remaining in the transition portion 12 is discharged from the bottom vent hole 25. In parallel with this, by bringing both ends of the first bottom seal portion 21 close to each other, the first bottom seal portion 21 and the transition portion 12 are folded in half. Further, the first bottom seal portion 21 and the transition portion 12 are folded into a flat shape along the pair of main film portions 10.

As shown in FIG. 9, the first bottom seal portion 21 is slightly pushed to the side where there is no vertical seal portion 20 in the x direction (left side in the figure) by being pushed by the highly rigid vertical seal portion 20. Tilted. Moreover, the 1st bottom seal part 21 is made into the substantially uniform width | variety over the full length, and the 1st bottom seal part 21 whole inclines as shown in FIG. For this reason, in the 3rd process part M3 (j) of FIG. 8, and the folding process shown in FIG. 11, the whole tilted 1st bottom seal part 21 is folded so that it may fall down to the tilted side. In FIG. 9, if the first bottom seal portion 21 is in a posture substantially parallel to the x direction, it is not stable in which direction the first bottom seal portion 21 falls in the folding step. For example, there is a concern about the behavior that half of the first bottom seal portion 21 falls to the opposite side with respect to the other half. In the present embodiment, it can be expected that the first bottom seal portion 21 falls down with good reproducibility on the side inclined by the vertical seal portion 20.

Also, as shown in FIG. 10, the intermediate product C1 is provided with a pair of bottom vent holes 25. In the state shown in FIGS. 9 and 10, gas (air) is present inside the transition portion 12. On the other hand, in the state where the folding step shown in FIG. 11 is completed, almost no gas is present inside the tubular film 1. By providing the pair of bottom air holes 25, the gas can be discharged more smoothly to the outside of the tubular film 1 in the folding step. In the present embodiment, even when the presser 841 is fully closed in the third process part M3 (j) of FIG. 8, as shown in FIG. The positional relationship protrudes downward from 841.

Next, 831 and the presser 841 are removed, and the fourth step is performed. The fourth process unit M4 in FIG. 8 is an apparatus part that performs the fourth process. As shown in the fourth process part M4 (a), two second bottom seal parts 22 each extending in the y direction are formed in the bisected transition part 12 by heat sealing using a seal bar 87 or the like.

The two second bottom seal portions 22 are portions where the inner surfaces of the respective portions of the divided transition portion 12 are joined. The heat seal by the seal bar 87 is performed so that the vertical seal portion 20 and the first bottom seal portion 21 are sandwiched by the seal bar 87. With this method, two second bottom seal portions 22 are simultaneously formed by one operation of sandwiching the transition portion 12 with the seal bar 87. FIG. 12 shows the intermediate product C1 immediately before the second bottom seal portion 22 is formed. As can be understood from the figure, each of the two second bottom seal portions 22 intersects with the first bottom seal portion 21. Further, one of the two second bottom seal portions 22 intersects with the vertical seal portion 20. In the above-described steps, the method in which the two second bottom seal portions 22 are simultaneously formed has been described. However, the present invention is not limited to this, and the two second bottom seal portions may be formed individually and sequentially. Moreover, in FIG. 12, the area | region in which the 2nd bottom seal part 22 is formed is shown with the imaginary line. As clearly shown in the figure, the second bottom seal portion 22 is formed closer to the upper end in the drawing than the portion of the vertical seal portion 20 that exists along the y direction in the transition portion 12. Further, the second bottom seal portion 22 is formed above the bottom vent hole 25 in the x direction view. In other words, the second bottom seal portion 22 is formed between the bottom vent hole 25 and the main film portion 10 in the x direction. Formed between. Next, as shown in the fourth process part M <b> 4 (b) of FIG. 8, the formed two second bottom seal parts 22 are cooled by the cooling part 88.

Next, the fifth step is performed. The fifth process unit M5 in FIG. 8 is an apparatus part that performs the fifth process.
As shown in the fifth process part M5 (a), the tubular film 1 is cut by the cutter 89 so as to vertically cut the pair of second bottom seal parts 22 in the y direction. As a result, portions of the first bottom seal portion 21 and the transition portion 12 that are located outward in the x direction from the two second bottom seal portions 22 are removed. As a result, as shown in the fifth process portion M5 (b), the two second bottom seal portions 22 become end portions in the x direction of the intermediate product C1 in the folded state. Here, in FIG. 12, the cutting position in this step is indicated by a cutting line CL. The cutting line CL overlaps the second bottom seal portion 22. In the packaging material A1 for a pouch container obtained through such a cutting process, the transition part 12 remaining as a part of the packaging material A1 for the pouch container after the cutting process, that is, a trapezoidal part 10a and a bottom film part 11 described later. The portion of the vertical seal portion 20 that exists along the y direction does not remain in a form that clearly appears in the appearance. In the illustrated example, the cutting line CL does not overlap with the portion of the vertical seal portion 20 that extends in the y direction. In such a case, the part which existed along the y direction in the vertical seal portion 20 may take a configuration that does not remain at all in the pouch container packaging material A1 described later. Note that, depending on the relative position between the cutting line CL and the vertical seal portion 20, the vertical seal portion 20 may barely overlap with the second bottom seal portion 22 and remain. Further, in the intermediate product C <b> 1 shown in FIG. 12, the cut marks by the protrusions 791 of the cutter 79 appear as a pair of cutout portions 17. Further, as shown in FIGS. 5 and 6, the pair of bottom vent holes 25 are provided near both ends of the first bottom seal portion 21. For this reason, in FIG. 12, it is located near the lower end in the x direction of the intermediate product C1, and is lower than the cutting line CL in the x direction. Therefore, after the tubular film 1 is cut along the cutting line CL, the bottom vent hole 25 does not remain in the pouch container packaging material A1.

After this, for example, the spout 5 is disposed in the opening portion on the opposite side to the second bottom seal portion 22 in the x direction of the tubular film 1. At this time, the spout 5 is preferably provided at a position retracted from the vertical seal portion 20. For example, the spout 5 is disposed at the center in the y direction of the pair of main film portions 10 of the tubular film 1. In this case, the vertical seal portion 20 is provided at a position shifted from the center in the y direction of the pair of main film portions 10. Thereby, in the packaging material A1 for pouch containers shown in FIG. 13, the spout 5 is disposed so as to be retracted from the vertical seal portion 20. Next, the top seal portion 23 shown in FIG. 13 is formed by heat sealing or the like using a seal bar. The top seal portion 23 is a portion where the ends in the x direction of the pair of main film portions 10 are joined together. Moreover, the part which pinches | interposes the spout 5 among a pair of main film parts 10 is joined so that an internal sealing state may be maintained with respect to the spout 5. FIG. By passing through the above process, packaging material A1 for pouch containers is obtained. In addition, the illustrated spout 5 has illustrated the state sealed by the lid component.

The packaging material for a pouch container intended by the present application has a vertical seal portion extending in the first direction in a state where the packaging material is folded flat, and faces each other in a second direction perpendicular to the first direction. In addition, both ends of the third direction which are perpendicular to both the first and second directions are connected to each other, and the dimension in the third direction becomes smaller toward the one end in the first direction toward the one end in the first direction. Each of which has a trapezoidal part, a pair of main film parts, a bottom film part connected to the lower and oblique sides of the paired trapezoidal parts and folded between the paired trapezoidal parts, and the pair of trapezoidal parts A first bottom seal part that reaches the lower side of the part and crosses the bottom film part; a pair of second bottom seal parts in which the lower side of the pair of trapezoidal parts and the bottom film part are joined; With Ri, the vertical seal portion is reached the one of the second bottom seal portion of the pair. Below, the packaging material A1 for pouch containers which is the example is demonstrated.

13 to 16 show a packaging material for a pouch container according to the first embodiment of the present invention. The packaging material A1 for the pouch container of the present embodiment is formed by the manufacturing method described above, and includes a pair of main film portions 10, a bottom film portion 11, a vertical seal portion 20, a first bottom seal portion 21, and a pair of A second bottom seal portion 22, a top seal portion 23, and a spout 5 are provided. In addition, these components are defined on the assumption that the packaging material A1 for the pouch container is folded flat as illustrated. For example, in a state where the packaging material A1 for the pouch container is expanded or further folded, each component can take an aspect different from the requirement described below. However, if the individual requirements are satisfied in the illustrated folded state, the configuration is intended by the present invention.

The pair of main film portions 10 are members constituting most of the pouch container packaging material A1. The pair of main film portions 10 face each other in the z direction, and both ends in the y direction are integrally connected without using a seal portion or the like. For this reason, continuous design printing can be performed on the whole body part, and the designability can be improved. In addition, the main film portion 10 located on the front side of the sheet of the pair of main film portions 10 has a vertical seal portion 20. The vertical seal portion 20 cuts the main film portion 10 vertically in the x direction. Each main film part 10 has a trapezoidal part 10a. The trapezoidal portion 10a is located on the lower end side (second bottom seal portion 22 side) in the x-direction diagram, and the width is the dimension in the y direction toward the lower end side (second bottom seal portion 22 side) in the x direction. This is a trapezoidal area where becomes small. The lower side of the trapezoidal portion 10a is the lower end in the x direction view of the main film portion 10, and the upper side of the trapezoidal portion 10a is an imaginary line extending in the y direction connecting the upper ends in the oblique sides of the trapezoidal portion 10a. Each hypotenuse of the trapezoidal portion 10 a is a bent portion 31.

As shown in FIG. 15 and FIG. 16, the vertical seal portion 20 overlaps the portions that were both end edges of the above-described belt-like film 1 </ b> A, and the seal tape 20 a is placed on the main film portion 10 so as to overlap these both end edges. It is joined to the inner surface by heat seal or the like.

The bottom film part 11 is folded and sandwiched between a pair of trapezoidal parts 10a. The bottom film portion 11 is connected to the two lower sides and the four oblique sides of the pair of trapezoidal portions 10a of the pair of main film portions 10. The bottom film portion 11 and the two lower sides of the pair of trapezoidal portions 10a are connected via a pair of second bottom seal portions 22 described later. Further, the bottom film part 11 and the four oblique sides of the pair of trapezoidal parts 10 a are connected via the bent part 31.

The first bottom seal portion 21 reaches the lower side of the pair of trapezoidal portions 10 a and crosses the bottom film portion 11. The first bottom seal portion 21 is obtained by joining the both sides of the bottom film portion 11 in the y direction by heat sealing or the like. The first bottom seal portion 21 is folded and sandwiched between the pair of trapezoidal portions 10 a together with the bottom film portion 11.

Each of the pair of second bottom seal portions 22 has a pair of trapezoidal portions 10a in which the end portions (lower sides) in the x direction are joined to the end portions of the bottom film portions 11 adjacent to the end portions by heat sealing or the like. It is.
Each second bottom seal portion 22 extends in the y direction. Further, the length of the second bottom seal portion 22 is smaller than the y-direction dimension of the rectangular portion located in the upper direction of the main film portion 10 in the x direction. Further, the vertical seal portion 20 reaches the one located on the front side of the sheet of the pair of second bottom seal portions 22. The arrival position of the vertical seal portion 20 avoids the center of the second bottom seal portion 22 and is near one end of the second bottom seal portion 22.

The top seal portion 23 is formed by joining the upper end portions of the pair of main film portions 10 in the x direction view by heat sealing or the like. By forming the pair of main film part 10, the bottom film part 11, the first bottom seal part 21, the pair of second bottom seal part 22 and the top seal part 23, the packaging material A1 for the pouch container contains the contents. An accommodating space 19 is provided for accommodating the. In addition, a pair of notch portions 17 are provided at both ends of the top seal portion 23 in the y direction.

The spout 5 is sandwiched between upper ends of the pair of main film portions 10 in the x direction, and as shown in FIG. 12, the spout 5 is sealed with the pair of main film portions 10 as a part of the top seal portion 23. It is joined to. The spout 5 is used as a filling port for filling the accommodation space 19 with the content or a spout for pouring the content. The illustrated spout 5 is provided with a lid part. In the packaging material A1 for the pouch container that is not yet filled with the contents, the lid part may not be mounted.

FIGS. 17 to 19 show a pouch container manufactured using the pouch container packaging material A1. In this pouch container B1, the contents 6 are filled in the accommodation space 19 of the packaging material A1 for the pouch container, and the contents 6 are accommodated in a sealed state by mounting the lid parts on the spout 5. .

To manufacture the pouch container B1, the packaging material A1 for the pouch container is prepared, and the contents 6 are filled by inserting a nozzle into the spout 5 or the like. Then, by attaching the above-described lid component to the spout 5, the packaging material A1 for the pouch container is sealed, and the accommodation space 19 is sealed. Thereby, the pouch container B1 is obtained.

FIG. 17 is a view as seen from obliquely below when the pouch container B1 for storing a predetermined amount of the contents 6 is in a posture in which the spout 5 is directed upward in the vertical direction. 18 is a front view of the pouch container B1, and FIG. 19 is a side view. As can be understood from these drawings, the first bottom seal portion 21 and the pair of second bottom seal portions 22 of each part of the bottom film portion 11 constitute a flat bottom surface. The four bent portions 31 are opened by the weight of the contents 6.

Next, the operation of the packaging material A1 for the pouch container, the pouch container B1, and the manufacturing methods thereof will be described.

According to the present embodiment, as shown in FIG. 8, the two second bottom seal portions 22 are simultaneously formed in a state where the first bottom seal portion 21 and the transition portion 12 are folded in half. For this reason, in the formation process of the 2nd bottom seal part 22, etc., it is not necessary to swell the cylindrical film 1 in a substantially cylindrical shape, or to stand. Furthermore, the processing on the folded tubular film 1 is suitable for being performed on an automated production line. And in this embodiment, while discharging | emitting the gas (air) between a pair of main film parts 10, it folds so that the transition part 12 may be divided into two from the state which the transition part 12 was expanded. According to such a method, it is possible to smoothly fold the transition portion 12 while avoiding the distortion portion 12 and the first bottom seal portion 21 from being unduly distorted or bent. Therefore, the production efficiency of the pouch container packaging material A1 can be increased. And the pouch container B1 manufactured using the packaging material A1 for pouch containers formed through such a process can be self-supported on a flat shelf board and suppresses discomfort when gripped. be able to.

A pair of bottom air holes 25 are formed in the intermediate product C1. Thereby, the gas (air) inside the tubular film 1 can be smoothly discharged out of the tubular film 1 through the bottom ventilation hole 25. Further, the pair of bottom air holes 25 are disposed on both ends of the first bottom seal portion 21 so as to be separated from each other. For this reason, it can be avoided that gas (air) remains in a corner or the like in the vicinity of the first bottom seal portion 21 of the intermediate product C1. Further, in the present embodiment, the vicinity of both ends of the first bottom seal portion 21 protrudes downward in the x direction from the presser 841 in the third process portion M3 (j) shown in FIGS. Thereby, even if the presser 841 is completely closed, the bottom vent hole 25 is not blocked by the presser 841. This is suitable for discharging the gas (air) in the tubular film 1 more smoothly and more completely.

The bottom vent hole 25 is constituted by an unsealed portion of the first bottom seal portion 21. For this reason, if the process which forms the 1st bottom seal part 21 is performed, the bottom part ventilation hole 25 can be formed collectively. This is preferable for improving manufacturing efficiency because it is not necessary to perform another process for forming the bottom vent hole 25.

The vertical seal portion 20 reaches the second bottom seal portion 22 instead of the bent portion 31. In other words, the vertical seal portion 20 does not exist in the bottom film portion 11. Thereby, it can avoid that the vertical seal | sticker part 20 appears excessively in the external appearance of packaging material A1 for pouch containers, and can improve the intensity | strength of packaging material A1 for pouch containers. Specifically, unlike the present embodiment, in FIG. 13, when the vertical seal portion 20 reaches the bent portion 31, the vertical seal portion 20 is folded back approximately 90 degrees at the bent portion 31, and the bottom film portion 11 will also appear. Moreover, the bottom film part 11 is a member which makes the bottom face of the pouch container B1, and when the vertical seal part 20 is formed on the bottom film part 11, when the pouch container B1 is placed on a product shelf or the like, for example. The vertical seal portion 20 may come into contact with the product shelf and cause a decrease in strength. According to this embodiment, the vertical seal part 20 does not appear in the bottom film part 11, which is preferable for improving the appearance and strength.

Furthermore, the vertical seal portion 20 is provided at a position avoiding the spout 5 in the y direction. The spout 5 that functions as a filling port or a spout has a basic shape of a cylinder and is difficult to be flat. For this reason, it is not easy to join with good airtightness between the pair of main film portions 10. If the vertical seal portion 20 is present at such a difficult-to-join location, the sealing performance of the spout 5 may be inferior. According to the present embodiment, such a concern can be eliminated.

20 to 22 show a modified example and other embodiments of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment.

20 (a) to 20 (c) show modified examples of the intermediate product C1. In the modification shown in FIG. 5A, only one bottom vent hole 25 is provided. The bottom vent hole 25 is disposed near one end of the first bottom seal portion 21 (downward in the z direction in the figure). In addition, it is the same as that of the example mentioned above that the bottom part vent hole 25 is formed by providing the unsealed part which cross | intersects x direction in a part of 1st bottom seal part 21. FIG. Also according to this modification, gas can be discharged in the third process section M3 shown in FIG. As can be understood from this modification, the number of the bottom vent holes 25 is not particularly limited.

(B) of the figure shows another modification of the intermediate product C1. In the present modification, the pair of bottom air holes 25 are constituted by through holes that penetrate the tubular film 1 in the y direction. Such a through hole can be formed, for example, in the second process section M2 shown in FIGS. Also in this modification, the pair of bottom vent holes 25 are disposed on both ends of the first bottom seal portion 21. Also according to such a modification, the gas can be appropriately discharged in the third process section M3 shown in FIG.

(C) of the figure shows another modification of the intermediate product C1. In the present modification, the pair of bottom air holes 25 are formed by notches formed at both ends in the z direction of the tubular film 1. The notch shown penetrates the tubular film 1 and allows the inside and outside of the tubular film 1 to be ventilated. Also according to such a modification, the gas can be appropriately discharged in the third process section M3 shown in FIG.

21 and 22 show a modification of the packaging material manufacturing apparatus D1 for a pouch container. FIG. 21 is a main part perspective view showing a third process part M3 (i) of the present modification. 22 is a cross-sectional view taken along line XXII-XXII in FIG.

In this modification, the spacer 85 is inserted into the tubular film 1 of the intermediate product C1 in any of the processes leading to the third process part M3 (i). The spacer 85 is a long rectangular plate-like member having the x direction as the longitudinal direction and the y direction as the width direction, and is made of, for example, a resin such as silicone.
The spacer 85 has a plurality of vent holes 851. The vent hole 851 penetrates the spacer 85 in the x direction. The plurality of vent holes 851 are spaced apart in the width direction (y direction) of the spacer 85.

The spacer 85 is inserted so that it may overlap with the part which should form a pair of main film part 10 among the cylindrical films 1. FIG. In the third process section M3 (i), the intermediate product C1 and the spacer 85 inserted into the cylindrical film 1 of the intermediate product C1 are sandwiched between the support 831 and the presser 841. 841 moves downward in the x direction. Thereby, the gas (air) in the tubular film 1 is discharged from the lower end in the x direction of the plurality of vent holes 851 of the spacer 85 to the upper end. In addition, also in the third process part M3 (j) shown in FIG. 8, the gas (air) pushed out when the transition part 12 is folded can be discharged through the plurality of vent holes 851.

Also in this modification, the gas in the tubular film 1 (in order to appropriately perform the formation of the pair of main film parts 10 and the formation of the transition part 12 by the third process part M3 and the process of folding the transition part 12 ( Air) can be discharged. In addition, when the pouch container packaging material A1 is formed by the pouch container packaging material manufacturing apparatus D1 of the present modification, the bottom air hole 25 may not be formed in the intermediate product C1.

The pouch container packaging method, the pouch container manufacturing method, the pouch container packaging material, and the pouch container according to the present invention are not limited to the above-described embodiments. The specific configuration of the method for manufacturing a packaging material for a pouch container, the method for manufacturing a pouch container, the packaging material for a pouch container, and the pouch container according to the present invention can be changed in various ways.

A1: Pouch container packaging material B1: Pouch container C1: Intermediate product D1: Pouch container packaging material manufacturing apparatus 1: Cylindrical film 1A: Strip film 5: Spout 6: Contents 10: Main film part 10a: Trapezoid part 11 : Bottom film part 12: transition part 17: notch part 18: folding line 19: accommodation space 20: vertical seal part 20a: seal tape 21: first bottom seal part 22: second bottom seal part 23: top seal part 25 : Bottom ventilation hole 31: Bending part 71: Film roll 72: Tape roll 76: Seal bar 77: Cooling part 79: Cutter 82: Pressing bar 87: Seal bar 88: Cooling part 89: Cutter 101: Base film layer 102: Sealant Layer 103: Barrier layer 104: Intermediate layer 711: Intermediate roll 731: Seal bar 732: Cooling section 751: Shift roller 752: Shift roller 753: Reversing roller 791: Protrusion 801: Holding tool 802: Holding tool 803: Holding tool 811: Expanding bar 831: Support tool 832: Support surface 841: Presser CL: Cutting line M1: 1st process part M2: 2nd process part M3: 3rd process part M4: 4th process part M5: 5th process part

Claims (16)

1. A method for producing a packaging material for a pouch container used for a pouch container,
   A first step of forming a tubular film having a vertical seal portion by joining both side ends of a strip-like film extending in the first direction;
   A second step of forming a first bottom seal portion traversing the tubular film in a second direction perpendicular to the first direction;
   By discharging part of the gas in the cylindrical film, the first film is separated from the first bottom seal portion in the first direction and faces each other in the second direction, and the first direction and the second direction A treatment for forming a pair of main film portions having a width direction in a third direction that is perpendicular to each other, the pair of main film portions and the first bottom seal portion are connected, and the remaining gas is inflated. The process of forming the transition portion and the pair of the pair of the first bottom seal portion and the transition portion so as to bisect the first bottom seal portion and the transition portion by bringing both ends of the first bottom seal portion close to each other while discharging the gas in the transition portion. A third process having a process of folding the main film part into a flat shape along the main film part,
   A fourth step of forming a pair of second bottom seal portions extending in the third direction and intersecting the vertical seal portion and the first bottom seal portion in the bisected transition portion;
   A fifth step of cutting the tubular film along the third direction so as to longitudinally cut the pair of second bottom seal portions;
   A method for producing a packaging material for a pouch container, comprising:
2. Before the third step, further comprising the step of forming a vent for ventilating the inside and outside of the transition portion;
   In the third step, the gas in the transition portion is discharged from the vent hole, and the first bottom seal portion and the transition portion are folded into a flat shape along the pair of main film portions,
   2. The pouch container package according to claim 1, wherein, in the fourth step, the pair of second bottom seal portions are formed at a position between the vent hole and the pair of main film portions in the first direction. A method of manufacturing the material.
3. The packaging material for a pouch container according to claim 2, wherein the step of forming the vent hole is performed by leaving an unsealed portion that crosses the first bottom seal portion in the first direction in the second step. Manufacturing method.
4. The manufacturing method of a packaging material for a pouch container according to claim 2 or 3, wherein, in the step of forming the vent hole, a pair of the vent holes spaced apart from both ends of the first bottom seal portion is formed. Method.
5. In the third step, the presser is moved in the first direction in the first direction in a state where the tubular film is sandwiched between the support and a presser having a support surface extending in the first direction and the third direction. After performing the process of forming the pair of main film parts and the process of forming the transition part by deaeration between the pair of main films by relative movement in the direction approaching the bottom seal part, 5. The process according to claim 1, wherein the first bottom seal part and the transition part are folded into a flat shape by rotating the pressing tool around an axis extending in the third direction with respect to the support tool. A method for producing a packaging material for a pouch container according to claim 1.
6. The method for manufacturing a packaging material for a pouch container according to any one of claims 1 to 5, wherein, in the second step, both ends of the first bottom seal portion are disposed at positions retracted from the vertical seal portion.
7. After the step of cutting the tubular film, it is an end portion of the tubular film opposite to the first bottom seal portion in the first direction, and avoids the vertical seal portion in the third direction. The manufacturing method of the packaging material for pouch containers in any one of Claim 1 thru | or 5 further equipped with the process of attaching a spout to a position.
8. An apparatus for manufacturing a packaging material for a pouch container used for a pouch container,
   A first process part for forming a tubular film having a vertical seal part by joining both side ends of a strip-like film extending in the first direction;
   A second process part for forming a first bottom seal part traversing the tubular film in a second direction perpendicular to the first direction;
   By discharging part of the gas in the cylindrical film, the first film is separated from the first bottom seal portion in the first direction and faces each other in the second direction, and the first direction and the second direction A treatment for forming a pair of main film portions having a width direction in a third direction that is perpendicular to each other, the pair of main film portions and the first bottom seal portion are connected, and the remaining gas is inflated. The process of forming the transition portion and the pair of the pair of the first bottom seal portion and the transition portion so as to bisect the first bottom seal portion and the transition portion by bringing both ends of the first bottom seal portion close to each other while discharging the gas in the transition portion. A third process section for performing a process of folding the main film section into a flat shape along the main film section;
   A fourth process part for forming a pair of second bottom seal parts extending in the third direction and intersecting the vertical seal part and the first bottom seal part in the bisected transition part;
   A fifth process section for cutting the tubular film along the third direction so as to cut the pair of second bottom seal sections vertically;
   An apparatus for manufacturing a packaging material for a pouch container, comprising:
9. The tubular film before being processed in the third process part further includes a vent hole forming process part for venting the inside and outside of the transition part,
   The third process part is folded in a flat shape along the pair of main film parts so as to bisect the first bottom seal part and the transition part while discharging the gas in the transition part from the vent hole,
   9. The pouch container packaging according to claim 8, wherein the fourth process part forms the pair of second bottom seal parts at a position between the vent hole and the pair of main film parts in the first direction. Material manufacturing equipment.
10. The packaging material for a pouch container according to claim 9, wherein the second process part includes the vent hole forming process part by leaving an unsealed part crossing in the first direction on the first bottom seal part. Manufacturing equipment.
11. The pouch container packaging material manufacturing apparatus according to claim 9 or 10, wherein the second process part forms a pair of the air holes spaced apart from each other on both ends of the first bottom seal part.
12. The fourth process unit includes a support having a support surface extending in the first direction and the third direction, and a presser disposed to face the support surface, and the support surface and the presser The pair of main films is deaerated by moving the retainer relative to the first bottom seal portion in the first direction with the tubular film sandwiched therebetween. After performing the process of forming the main film part and the process of forming the transition part, the first bottom seal is rotated by rotating the pressing tool around an axis extending in the third direction with respect to the support tool. The manufacturing apparatus of the packaging material for pouch containers in any one of Claims 8 thru | or 11 which performs the process which folds a part and the said transition part into flat shape.
13. It is an intermediate product of packaging material for pouch containers used for pouch containers,
    A tubular film having the first direction as an axial direction;
    A first bottom seal portion traversing in a second direction perpendicular to the first direction at one end of the tubular film;
    A vent hole located on the side of the cylindrical film in the second direction and leading to the inside and outside of the cylindrical film;
    An intermediate product of a packaging material for a pouch container, comprising:
14. The intermediate product of the packaging material for a pouch container according to claim 13, wherein the vent hole is configured by an unsealed portion that crosses the first bottom seal portion in the first direction.
15. The intermediate product of the packaging material for a pouch container according to claim 14, comprising a pair of the vent holes arranged at both ends of the first bottom seal portion.
16. The tubular film is formed by providing a vertical seal portion in which both ends in the width direction of the belt-like film are joined,
    The intermediate product of the packaging material for a pouch container according to any one of claims 13 to 15, wherein the vertical seal portion is positioned on a side of the cylindrical film in the second direction.

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