WO2022230025A1

WO2022230025A1 - Sheet material container

Info

Publication number: WO2022230025A1
Application number: PCT/JP2021/016664
Authority: WO
Inventors: 貴博大塚
Original assignee: 花王株式会社
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2022-11-03
Also published as: JPWO2022230025A1; CN117242016A; EP4310021A1; JP7480431B2

Abstract

A sheet material container (100) comprises a container body (20), an extending piece (25), a storage region (17), a filling port (25c), and a bag body (40) configured from a bag body-constituting sheet material (51) and enclosing the storage region (17). The extending piece (25) has an injection port (25a) for injecting a filler into a filled section (60). The sheet material container (100) has a peripheral edge seal section (42) at which one or a plurality of sheet materials are bent, and of the one or a plurality of sheet materials, peripheral edge sections of the sheet material of the innermost layer are bonded together. The storage region (17) is demarcated by the peripheral edge seal section (42), a portion of the peripheral edge seal section (42) is disposed in a region outside of the injection port (25a) on the extending piece (25), and the storage region (17) is tightly sealed from external space with the exception of the filling port (25a).

Description

sheet container

The present invention relates to a sheet material container and a method for manufacturing a sheet material container containing contents.

A sheet material container having a structure in which a plurality of films are laminated and a filler such as air is enclosed between the layers is described in Patent Document 1, for example. The sheet material container of Patent Document 1 has a container having a storage area for storing contents, a bag body covering the container (described as a cover body in the document), and a bag body structure constituting the bag body. It includes a sheet material 21 (described as a cover-constituting sheet material in the document) and an extension piece extending from the container.
The bag-constituting sheet material has a joint portion (described as a film region in the same document) where a plurality of film layers are joined together, and a non-joint portion ( The same document describes a filler enclosing portion), and a filler is enclosed between a plurality of film layers in the non-bonded portion to form a filling portion, and the extending piece is attached to the filling portion. It has an injection port for injecting the filling material.
In the sheet material container of Patent Literature 1, the accommodation area and the external space of the sheet material container communicate with each other at the base end of the extending piece.
Prior art documents Patent Document 1 Japanese Patent No. 6193535

The present invention provides a sheet material container comprising one or more sheet materials including a bag-constituting sheet material having an outer film layer and an inner film layer laminated to each other, comprising: a container body; an extension piece extending from the container body, a storage area that is continuously formed over the interior of the container body and the interior of the extension piece, and contains a content; and a filling port that allows the inner portion of the container body and the outer space of the sheet material container to communicate with each other; In the bag body-constituting sheet material, the bag body seal portion, which is a joint portion between the outer film layer and the inner film layer, and the outer film layer and the inner film layer are partially unbonded. a non-bonded portion, and a filling portion capable of enclosing a filler between the outer film layer and the inner film layer in the non-bonded portion; The sheet material container has an injection port for injecting a filler, and the sheet material container has the one or more sheet materials folded, and the innermost sheet material among the one or more sheet materials has its peripheral edge portions facing each other. and a portion of the peripheral seal is disposed on the extension piece in a region outside the injection port. and said containment area relates to a sheet material container which is sealed from said external space except for said filling port.

The present invention also provides a method for manufacturing a sheet material container containing a content, comprising: a preparation step of preparing the sheet material container of the present invention as the sheet material container; , a purging process using an inert gas, a preliminary step of performing at least one of; a content filling step of filling the content in the accommodation region; The present invention relates to a method for manufacturing a sheet material container containing a content, in which a filler filling step of enclosing the filler between layers of a film layer and a filling material filling step are performed in this order.

1 is a front view of a sheet material container according to an embodiment; FIG. It is a rear view of the sheet material container which concerns on embodiment. 4 is an exploded perspective view showing an outer film layer and an inner film layer of the bag-constituting sheet material; FIG. FIG. 4 is an exploded perspective view showing an inner bag-constituting sheet material and a bag-constituting sheet material; FIG. 4 is a plan view showing a container-constituting sheet material having an inner bag-constituting sheet material and a bag-constituting sheet material that are laminated to each other; FIG. 4 is a rear view showing a state in which the sheet material container according to the embodiment is filled with contents. 7(a) and 7(b) are diagrams for explaining the manufacturing method of the sheet material container according to the embodiment, and in FIG. 7(a), the valve portion is positioned at the top dead center. FIG. 7(b) shows a state in which the valve portion is positioned at the bottom dead center. 8(a), 8(b) and 8(c) are diagrams showing a series of steps in the manufacturing method of the sheet material container according to the embodiment. ) shows the state in which the containing area is degassed, and FIG. 8(b) shows the state in which the containing area is filled with an inert gas. 9(a) and 9(b) are diagrams showing a series of steps in the manufacturing method of the sheet material container according to the embodiment, of which FIG. , and FIG. 9B shows a state in which the filling portion is filled with the filling material. 10(a) and 10(b) are diagrams for explaining the manufacturing method of the sheet material container according to the embodiment, of which FIG. FIG. 10(b) shows a state in which the filler is being filled into the filling portion. 11(a) is a cross-sectional view taken along line AA shown in FIG. 10(b), and FIG. 11(b) is a cross-sectional view taken along line BB shown in FIG. 10(b). 12(a), 12(b), 12(c), and 12(d) are plan views showing the extending piece and its peripheral structure, of which FIG. FIG. 12(b) shows the second modification, FIG. 12(c) shows the third modification, and FIG. 12(d) shows the fourth modification. It is a figure for demonstrating the manufacturing method of the sheet material container which concerns on the modification 5 of embodiment.

Detailed description of the invention

According to the studies of the present inventors, the sheet material container described in Patent Document 1 has room for improvement in terms of the structure for suppressing deterioration (alteration) of the contents.

The present invention relates to a method for manufacturing a sheet material container and a sheet material container containing contents, which can more reliably suppress deterioration (alteration) of the contents.

Preferred embodiments of the present invention will be described below with reference to the drawings. In addition, in all the drawings, the same constituent elements are denoted by the same reference numerals, and overlapping descriptions are appropriately omitted. 8(a) to 9(b) show the state of the sheet material container 100 in each manufacturing process in a cross section at a position corresponding to line AA shown in FIG. Moreover, in FIG.10(a) and FIG.10(b), the extension piece 25 is shown in the cross section along the extension direction of the extension piece 25 concerned.

The sheet material container 100 according to the present embodiment includes one or more sheet materials including a bag-constituting sheet material 21 having an outer film layer 22 and an inner film layer 23 laminated to each other. The material container comprises a container body 20, an extension piece 25 extending from the container body 20, and continuously formed over the interior of the container body 20 and the interior of the extension piece 25. It is composed of a storage area 17 for storing an object, a filling port 15c that allows mutual communication between the inner portion of the container body 20 in the storage area 17 and the external space of the sheet material container 100, and the bag-constituting sheet material 21. a bag 10 enclosing a containment area 17;
The bag-constituting sheet material 21 includes a bag sealing portion 26, which is a joint portion between the outer film layer 22 and the inner film layer 23, and a non-bonded portion in which the outer film layer 22 and the inner film layer are partially unbonded. and a filling portion 60 capable of enclosing a filler between the layers of the outer film layer 22 and the inner film layer 23 in the non-bonded portion 24 .
The extending piece 25 has an injection port 25a for injecting the filling material into the filling portion 60 .
The sheet material container 100 has a peripheral edge seal portion 42 in which one or more sheet materials are folded and the peripheral edges of the innermost sheet material among the one or more sheet materials are joined to each other. A housing area 17 is defined by the portion 42, and a portion of the peripheral seal portion 42 is arranged in a region outside the filling port 25a in the extending piece 25, and the housing region 17 is outside the filling port 15c. Closed from space.

When filling the content 18 into the storage area 17, oxygen is sucked from the storage area 17 before filling the storage area 17 with the content 18. As a result, it is possible to prevent the contents 18 filled in the containing area 17 from deteriorating (deteriorating) due to contact with oxygen.

Here, according to the present embodiment, since the accommodation area 17 is sealed from the external space except for the filling port 15c, before the filling material is enclosed in the filling part 60, the filling material is sucked from the filling port 15c to contain the filling material. The area 17 can be sufficiently degassed. As a result, it is possible to more reliably prevent the content 18 filled in the storage area 17 from deteriorating (deteriorating) due to contact with the oxygen remaining in the storage area 17 .

Furthermore, according to this embodiment, a portion of the peripheral seal portion 42 is arranged in the extension piece 25 in a region outside the injection port 25a, and the accommodation region 17 is sealed from the external space except for the filling port 15c. Therefore, it is possible to satisfactorily fill the contents 18 through the filling port 15c into the containing area 17 of the sheet material container 100 before the filling material is enclosed in the filling portion 60 . As a result, the content 18 can be filled while the containing area 17 is sufficiently expanded. Therefore, the content 18 can be smoothly filled into the storage area 17 .

In the present invention, the type of content 18 is not particularly limited. Examples of the contents 18 include shampoo, rinse, body soap, detergent, bleach, softener, beverage, food, engine oil, chemicals, and the like.
In addition, the content 18 may be liquid (including paste and foam), solid (for example, granular (including granular), powder, etc.). ) may be
In this embodiment, the content 18 is liquid, for example.
When the content 18 is a liquid, the viscosity of the content 18 is preferably 1 mPa·s or more and 120,000 mPa·s or less at 30° C. (measured with a Brookfield viscometer, for example, Viscometer TV manufactured by Toki Sangyo Co., Ltd.). -10 or measured with a viscometer TVB-10 or the like), and more preferably 1 mPa·s or more and 60,000 mPa·s or less.

The filling material enclosed in the filling part 60 can be fluid (gas or liquid), solid (for example, granules, resin pellets, etc.), or semi-solid (for example, foaming agent, etc.). It is preferably fluid.

In this embodiment, the description of the positional relationship (vertical relationship, etc.) of each component of the sheet material container 100 is based on the positional relationship in which the sheet material container 100 stands on its own as shown in FIG. 6 unless otherwise specified. It is explained. However, the positional relationship in these descriptions does not necessarily match the positional relationship when the sheet material container 100 is used or manufactured.
Further, regarding the positional relationship of each component of the sheet material container 100, the positional relationship shown in each drawing may be described.
The front side of the sheet material container 100 (the front side of the paper surface in FIG. 1) is called the front side, the back side of the sheet material container 100 (the back side of the paper surface of FIG. 1) is called the rear side, and the left side of the sheet material container 100 when facing the front side. The left side (the left side in FIG. 1) is called the left side, and the right side (the right side in FIG. 1) as viewed from the front of the sheet material container 100 is called the right side. Further, the left-right direction of the sheet material container 100 may be referred to as the width direction (width direction).

In the case of this embodiment, the container body 20 is bag-shaped and has a body portion 11 , a top portion 14 arranged above the body portion 11 , and a bottom portion 13 arranged below the body portion 11 . is formed in However, the present invention is not limited to this example, and the container body 20 may not have the top portion 14 or the bottom portion 13 . As shown in FIG. 6, in a state in which the filling portion 60 is filled with the filler, the sheet material container 100 can stand on its own with the bottom portion 13 placed on a horizontal placement surface.
The container body 20 surrounds the housing area 17 (in the case of this embodiment, surrounds an inner bag 40, which will be described later). The container body 20 constitutes the outer shell of the sheet material container 100 . Below, the body part 11 , the top part 14 and the bottom part 13 of the container body 20 may be referred to as the body part 11 , the top part 14 and the bottom part 13 of the sheet material container 100 .

As shown in FIGS. 1 and 2, the body 11 has a first main surface portion 20a (front panel) and a second main surface portion 20b (rear panel) facing each other with the accommodation area 17 interposed therebetween. have The first principal surface portion 20a is located on the front side, and the second principal surface portion 20b is located on the back side.
The first main surface portion 20a is, for example, bilaterally symmetrical, and the second main surface portion 20b is also, for example, bilaterally symmetrical.
In the container body 20, the container-constituting sheet material 51 (see FIG. 5) is folded to join the peripheral edge portions of the container-constituting sheet material 51 (in the case of the present embodiment, the inner bag-constituting sheet material that constitutes the inner bag 40). 41).

Moreover, in the case of this embodiment, the extension piece 25 extends from the upper end portion of the container body 20 . More specifically, the front side portion of the extension piece 25 extends upward from the upper end of the second main surface portion 20b of the body portion 11, for example. The back side portion of the extension piece 25 extends upward from the upper end of the top portion 14, for example. In other words, the extension piece 25 extends from the boundary portion between the body portion 11 and the top portion 14 .
The width dimension of the extension piece 25 is, for example, substantially constant in the vertical direction. However, the width dimension of the extension piece 25 may differ, for example, depending on the position in the vertical direction.

In addition, in the case of this embodiment, the sheet material container 100 further includes an inner bag 40 arranged inside the bag body 10 , and the inner bag 40 contains one or more sheet materials constituting the sheet material container 100 . It is composed of the inner bag-constituting sheet material 41, which is the innermost sheet material. Therefore, in the case of the present embodiment, the peripheral edge seal portion 42 in which the peripheral edge portions of the innermost sheet material are joined together is a seal portion in which the peripheral edge portions of the inner bag-constituting sheet material 41 are joined to each other. be.
More specifically, the inner bag 40 is constructed by, for example, joining portions of the inner bag-constituting sheet material 41 (see FIG. 4) to each other at the periphery. That is, the bag-shaped inner bag 40 is formed by folding the inner bag-constituting sheet material 41 and joining the peripheral edge portions of the inner bag-constituting sheet material 41 to each other. As described above, the inner bag 40 is covered with the container body 20 . The inner bag 40 has a housing area 17 inside the inner bag 40 .

The shape of the inner bag 40 is not particularly limited, but in the case of this embodiment, the inner bag 40 is formed in the same shape as the container body 20 . Of course, the shape of the inner bag 40 can also be made smaller than the container body 20 .
As shown in FIG. 8B, the inner bag 40 has a first planar portion 40a located on the front side and a second planar portion 40b located on the back side with the accommodation area 17 interposed therebetween.

The sheet material container 100 includes a spout member 15 having a discharge port for discharging the contents 18 from the containing area 17, and the discharge port also serves as the filling port 15c.
More specifically, the spout member 15 is provided, for example, through the top portion 14 .
For example, as shown in FIGS. 7(a) and 7(b), the spout member 15 includes a cylindrical ejection tube portion 15a through which the contents 18 pass, and one end of the ejection tube portion 15a in the axial direction ( and a plate-like plate-like portion 15b provided in an arrangement orthogonal to the axial direction at the lower end). A screw thread is formed on the outer peripheral surface of the pouring tube portion 15a, and the pouring tube portion 15a has a male screw shape. The pouring tube portion 15 a vertically penetrates the top portion 14 and protrudes upward from the top portion 14 .
The plate-like portion 15b protrudes in a flange shape from the lower end of the pouring tube portion 15a toward the surroundings. Although the planar shape of the plate-like portion 15b is not particularly limited, it may be, for example, a substantially square shape.
The plate-like portion 15 b is provided, for example, on the inner surface or the outer surface of the portion of the inner bag-constituting sheet material 41 that is arranged along the top portion 14 of the body portion 11 . The plate-like portion 15b is joined to the inner surface (lower surface) of the inner bag-constituting sheet material 41 at the top portion 14, for example. Therefore, the plate-like portion 15 b is joined to the bag-constituting sheet material 21 via the inner bag-constituting sheet material 41 . However, the present invention is not limited to this example, and the plate-like portion 15b may be directly bonded to the inner film layer 23 of the bag-constituting sheet material 21 . The joint portion between the plate-like portion 15b and the inner bag-constituting sheet material 41 surrounds the pouring tube portion 15a in a circular fashion in a plan view. The joint portion between the plate-like portion 15b and the inner bag-constituting sheet material 41 is formed, for example, in a range overlapping with the annular bag body sealing portion 26 (see FIG. 5) positioned around the insertion hole 21a.
An opening on the upper end side of the dispensing tube portion 15a is a discharge port for discharging the content 18 from the storage area 17, and also serves as a filling port 15c. Therefore, the inner portion of the container body 20 in the housing area 17 and the outer space of the sheet material container 100 are communicated with each other through the opening on the upper end side of the pouring tube portion 15a.
An opening is formed in the plate-like portion 15b coaxially with the inner space of the extraction cylinder portion 15a. The content 18 in the storage area 17 is discharged to the outside through the opening of the plate-like portion 15b and the filling port 15c.

Although the shape of the filling portion 60 is not particularly limited, for example, as shown in FIGS. 61, a second filling portion 62 formed in a circular shape along the peripheral portion of the second main surface portion 20b, a third filling portion 63 formed in a circular shape along the peripheral portion of the bottom portion 13, The top portion 14 includes a fourth filling portion 64 that is circumferentially formed around the pouring tube portion 15a.
The first filling section 61 is connected to the fourth filling section and also connected to the third filling section 63 . The second filling section 62 is connected to the third filling section 63 .
The sheet material container 100 is provided with the filling part 60 that is formed as a continuous line as described above. Sufficient structural strength is ensured.
In addition, in the present invention, the sheet material container 100 may include a plurality of filling portions 60 that are independent of each other.

Furthermore, in the case of the present embodiment, the filling portion 60 is the first extending filling portion arranged on one side of the extending piece 25 with the housing area 17 inside the extending piece 25 interposed therebetween in the thickness direction of the extending piece 25. 66 and a second extending filling portion 67 located on the other side.
In the case of the present embodiment, the first extending filling portion 66 and the fourth filling portion 64 are connected via the face-to-face connection portion 65a, and the second extending filling portion 67 and the second filling portion 62 are They are connected via the face-to-face connection portion 65b.
More specifically, the lower edge of the first extending filling portion 66 is connected to the upper edge of the fourth filling portion 64, and the lower edge of the second extending filling portion 67 is connected to the upper edge of the second filling portion 62. ing.

Here, for example, in the outer film layer 22, the filling port 25a is formed in a portion defining at least one of the first extending filling portion 66 and the second extending filling portion 67. As shown in FIG.
In the case of this embodiment, for example, as shown in FIG. is arranged at a position corresponding to the central position in the extending direction of the .
However, the injection port 25a may be formed, for example, in a portion defining the first extending filling portion 66 in the outer film layer 22, or may be formed in a portion defining the first extending filling portion 66. , and the portion defining the second extending filling portion 67 .

As shown in FIG. 3, the bag-constituting sheet material 21 is formed by mutually laminating an outer film layer 22 forming the outer surface side of the container body 20 and an inner film layer 23 forming the inner surface side of the container body 20 . It is configured by joining. That is, as an example, in the case of this embodiment, the bag-constituting sheet material 21 is composed of two film layers, an outer film layer 22 and an inner film layer 23 . However, the present invention is not limited to this example, and the bag-constituting sheet material 21 may have film layers other than the outer film layer 22 and the inner film layer 23 .
In this embodiment, the outer film layer 22 and the inner film layer 23 are formed in the same shape. However, the present invention is not limited to this example, and the outer film layer 22 and the inner film layer 23 may have different shapes. In the case of an irregular shape, the outer film layer 22 preferably has a shape larger than the inner film layer 23 .
An insertion hole is formed in the outer film layer 22 and the inner film layer 23, through which the pouring tube portion 15a of the spout member 15 is inserted.

The bag-constituting sheet material 21 is formed with a non-bonded portion 24 (see FIG. 5) where the outer film layer 22 and the inner film layer 23 are partially non-bonded. For example, one or both of the outer film layer 22 and the inner film layer 23 are partially non-bonded on the facing surface of the other. The non-bonding treatment can be easily formed by applying a non-bonding agent (so-called desizing agent) to create a desizing state. Any paste killer can be used as long as it can suppress bonding between the outer film layer 22 and the inner film layer 23 . As the desizing agent, for example, printing inks, medium inks, desizing inks, and the like used in offset printing, flexographic printing, and letterpress printing (relief printing) can be preferably used. In addition, thermosetting and UV-curable inks can be preferably used. The non-joining portion 24 is the range to which the non-joining treatment has been applied. A filling portion 60 is formed by enclosing a filling material in the non-bonded portion 24 . Of course, the bag seal portion 26 may be formed by heat sealing using a mold having the shape of the bag seal portion 26 without being limited to the non-bonding process.
The filling portion 60 is not necessarily formed in the entire non-joint portion 24 , and may be formed in a part of the plurality of non-joint portions 24 .
In FIGS. 3 and 4, in each of the outer film layer 22 and the inner film layer 23, the regions that are joined together to form the bag sealing portion 26 are hatched upward to the right for the sake of convenience.
In FIG. 5, in the container-constituting sheet material 51, in the region where the outer film layer 22 and the inner film layer 23 are joined to define the non-joint portion 24, that is, the formation region of the bag body seal portion 26, , are hatched upward to the right for convenience.
Furthermore, in FIG. 4, a seal boundary line 21c, which is a boundary line between the seal area of the peripheral edge portion of the bag-constituting sheet material 21 and the other area, is indicated by a chain double-dashed line. In the case of the present embodiment, in the region outside the sealing boundary line 21c of the bag-constituting sheet material 21, the outer film layer 22 and the inner film layer 23 are joined to each other during bag making, and the inner film layer The film layer 23 and the inner bag-constituting sheet material 41 are joined together.
As a technique for joining the outer film layer 22 and the inner film layer 23, for example, heat sealing, ultrasonic sealing, joining with an adhesive, or the like can be used.

In the case of this embodiment, each of the outer film layer 22 and the inner film layer 23 has a layer structure including a plurality of resin layers. The inner bag-constituting sheet material 41 also has a layered structure including a plurality of resin layers.

The bag-constituting sheet material 21 and the inner bag-constituting sheet material 41 preferably include a resin layer of any one of polyethylene, polypropylene, polyester, and polyamide.
The material of the resin layer is not particularly limited, but for example, high density polyethylene (HDPE), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ultra low density polyethylene (ULDPE). ), polyethylene-based materials such as ethylene-vinyl alcohol copolymer (EVOH), or oriented polypropylene (OPP), unoriented polypropylene (CPP), isotactic PP, syndiotactic PP, atactic PP, random PP, block PP or polyester-based materials such as polyethylene terephthalate (PET), amorphous polyethylene terephthalate (amorphous PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN) From the viewpoint of recyclability, it is more preferable to use either oriented nylon (ONy), unoriented nylon (CNy), nylon 6, nylon 66, nylon 11, nylon 12, or MXD6. Among them, the above-described polyethylene-based material is particularly preferable.

As shown in FIGS. 4 and 5, the inner bag-constituting sheet material 41 is laminated on the bag-constituting sheet material 21, and as shown in FIG. are joined to each other, and the peripheral edge of the outer film layer 22 and the peripheral edge of the inner film layer 23 are joined to each other. Thus, the container-constituting sheet material 51 is constituted by the bag-constituting sheet material 21 and the inner bag-constituting sheet material 41 .
Here, the sealing portion of the peripheral portion of the container-constituting sheet material 51 is referred to as a peripheral sealing portion 52 . The peripheral edge sealing portion 52 is a sealing portion between the peripheral edge portion of the inner film layer 23 and the peripheral edge portion of the inner bag-constituting sheet material 41 (hereinafter referred to as an inner/outer sealing portion 43), and a sealing portion between the peripheral edge portion of the outer film layer 22 and the inner film layer 23. and a sealing portion with the peripheral portion (hereinafter referred to as main body peripheral edge sealing portion 28).
In FIG. 5, the region where the peripheral seal portion 52 is formed is hatched upward to the left. In addition, in FIG. 5 , in the region where the forming region of the peripheral seal portion 52 and the forming region of the bag body seal portion 26 overlap, leftwardly rising hatching and rightwardly rising hatching overlap.
As a method for forming the peripheral edge seal portion 52, heat sealing, ultrasonic sealing, bonding with an adhesive, or the like can be used as an example.

As shown in FIG. 5, the bag-constituting sheet material 21 includes, for example, a first sheet portion 31 that constitutes the first main surface portion 20a and a second sheet portion that constitutes the second main surface portion 20b. 32 , a bottom portion-constituting sheet portion 38 that constitutes the bottom portion 13 , and a top portion-constituting sheet portion 39 that constitutes the top portion 14 .
An insertion hole 21a is formed in the top portion-constituting sheet portion 39, through which the pouring cylinder portion 15a of the spout member 15 is inserted.
In the case of this embodiment, the non-joint portion 24 is formed in a shape corresponding to the shape of the filling portion 60 of the sheet material container 100 .

Here, in the case of the present embodiment, as shown in FIG. 4 , the bag-constituting sheet material 21 is arranged on one side of the extending piece 25 with the containing area 17 inside the extending piece 25 interposed therebetween in the thickness direction of the extending piece 25 . and a second extension 22b located on the other side.
The first extending portion 22a is composed of, for example, the outer film layer 22 and the inner film layer 23, and extends outward from the top-constituting sheet portion 39. As shown in FIG. The second extending portion 22 b is composed of, for example, the outer film layer 22 and the inner film layer 23 and extends outward from the second sheet portion 32 . The first extending portion 22a and the second extending portion 22b are, for example, formed to have the same size and the same shape. Although the planar shape of each of the first extending portion 22a and the second extending portion 22b is not particularly limited, for example, they are formed in a substantially rectangular shape elongated in one direction.
In the state in which the bag-constituting sheet material 21 is unfolded (the state shown in FIGS. 4 and 5), the first extending portion 22a is connected to, for example, the first sheet portion 31 in the top-constituting sheet portion 39. The edge portion on the side opposite to the side where the top portion forming sheet portion 39 is located extends upward from the central portion in the width direction of the top portion-constituting sheet portion 39 . Similarly, the second extending portion 22b is formed, for example, at the edge of the second sheet portion 32 opposite to the side connected to the bottom-constituting sheet portion 38, at the center of the second sheet portion 32 in the width direction. extends downward from the

Furthermore, in the case of the present embodiment, the inner bag-constituting sheet material 41 is arranged on one side of the extending piece 25 in the thickness direction of the extending piece 25 with the accommodation area 17 inside the extending piece 25 interposed therebetween. It has an extension 46a and a fourth extension 46b located on the other side.
More specifically, the inner bag-constituting sheet material 41 is formed in the same shape as the bag-constituting sheet material 21 . The third extending portion 46a is a portion corresponding to the first extending portion 22a (a portion overlapping with the first extending portion 22a). The fourth extending portion 46b is a portion corresponding to the second extending portion 22b (a portion overlapping with the second extending portion 22b). The extension piece 25 is formed by joining peripheral edge portions of the first extension portion 22a to the fourth extension portion 46b to each other. More specifically, the peripheral edges of the first extension 22a and the third extension 46a are joined together, and the peripheral edges of the second extension 22b and the fourth extension 46b are joined together. are joined to each other, and peripheral edge portions of the third extending portion 46a and the fourth extending portion 46b are also joined to each other.
In addition, in FIG. 4, the sealing boundary line 41a of the inner bag-constituting sheet material 41 is indicated by a chain double-dashed line for convenience. The sealing boundary line 41a is a boundary line between a region where the inner bag-constituting sheet material 41 is joined (sealed) to the bag-constituting sheet material 21 and another region of the inner bag-constituting sheet material 41, and also serves as a boundary line between the container-constituting sheet material. 51 is a boundary line between the area where the inner bag-constituting sheet materials 41 are joined when the sheet material container 100 is formed and the other area of the inner bag-constituting sheet material 41 .
In this embodiment, the position of the seal boundary line 41a and the position of the seal boundary line 21c correspond to each other (overlap each other).

A portion of the inner bag-constituting sheet material 41 that overlaps with the top-constituting sheet portion 39 is formed with an insertion hole 41b through which the pouring tube portion 15a of the spout member 15 is inserted.
The plate-like portion 15 b of the spout member 15 is joined to, for example, the inner surface of the portion of the inner bag-constituting sheet material 41 that overlaps the top-constituting sheet portion 39 . The pouring cylinder portion 15a protrudes through the insertion hole 41b of the inner bag-constituting sheet material 41 and the insertion hole 21a of the top-constituting sheet portion 39 to the outer surface side of these sheets.

Here, in the case of this embodiment, the sheet material container 100 includes a valve portion 90 (see FIGS. 7A and 7B) attached to the filling port 15c. The valve part 90 can be switched between an open state in which the housing area 17 communicates with the external space via the filling port 15c and a closed state in which the housing area 17 and the external space are mutually blocked.
More specifically, the valve portion 90 includes an operation portion 92, a holding portion 93 that holds the operation portion 92 so as to be vertically slidable, and a spring member 97 that biases the operation portion 92 upward. ing.
In the case of this embodiment, the holding portion 93 is detachably attached to the pouring tube portion 15a of the spout member 15, for example.

The holding portion 93 includes a first member 94 which is a female threaded tubular portion detachably screwed to the pouring tubular portion 15a of the spout member 15, and a second member which supports a spring member 97. 95 and.
The first member 94 is formed, for example, in a tubular shape whose axial direction is the vertical direction. Each of the inner diameter and the outer diameter of the first member 94 decreases upward in three stages.
In addition, the first member 94 has a projecting portion 941 configured to block a second inflow portion 961b of a piston member 96b, which will be described later. The projecting portion 941 closes the second inflow portion 961b when the piston member 96b is pressed downward.
The second member 95 is formed, for example, in a substantially cylindrical shape whose axial direction is the vertical direction.
The second member 95 fits into the lumen of the first member 94, for example. In addition, the lower end of the spring member 97 is inserted into the inner cavity of the lower end of the second member 95 .
The second member 95 has, for example, an inflow portion 95a that communicates the accommodation area 17 and the internal space of the second member 95 .

The operating portion 92 includes a piston member 96b inserted through the lumen of the first member 94 and the lumen of the second member 95, and the lumen of the piston member 96b forms an internal flow path 961a. .
A second inflow portion 961b is formed at the lower end of the piston member 96b. In the state where the second inflow portion 961b and the projection portion 941 of the first member 94 are in contact with each other, the internal flow path 961a and the internal space of the second member 95 are blocked from each other. The internal flow path 961a and the internal space of the second member 95 are in communication with each other in a state where the protrusions 941 of the first member 94 are separated from each other.
The lower end of the piston member 96b is attached to the upper end of the spring member 97. As shown in FIG. More specifically, the spring member 97, for example, supports the piston member 96b and urges the piston member 96b upward. When the piston member 96b is pressed downward, the piston member 96b descends against the urging force of the spring member 97, and when the pressing operation on the piston member 96b is released, the piston member 96b moves to the position of the spring member. It rises according to the biasing force of 97.

In the case of the present embodiment, the operation of pushing the piston member 96b toward the body portion 11 side can switch the valve portion 90 to the open state in which the housing area 17 communicates with the external space via the filling port 15c.
More specifically, when the piston member 96b is pressed, the piston member 96b moves toward the bottom dead center against the biasing force of the spring member 97 (the piston member shown in FIG. 8B). Position 96b) Lower. Further, when the pressing operation on the piston member 96b is released, the piston member 96b rises to the top dead center (the position of the piston member 96b shown in FIG. 8A) according to the biasing force of the spring member 97. there is In addition, the present invention is not limited to the example in which the pressing direction in the pressing operation is downward (toward the trunk portion 11 side), and the moving direction of the piston member 96b may be, for example, the horizontal direction.
When the second inflow portion 961b of the piston member 96b is pushed downward from the protrusion 941 of the first member 94 by pressing the piston member 96b, the internal space of the second member 95 and the internal flow path 961a are mutually connected. Furthermore, the accommodation area 17 and the external space are communicated with each other. That is, in the case of the present embodiment, the opening operation for the operation portion 92 is an operation for lowering the second inflow portion 961b of the piston member 96b toward the bottom dead center side with respect to the projection portion 941 of the first member 94 by a pressing operation.
Further, by canceling the pressing operation on the piston member 96b, the valve portion 90 can be switched to a closed state in which the housing area 17 and the external space are mutually isolated.
More specifically, when the piston member 96b rises, the second inflow portion 961b of the piston member 96b and the projection portion 941 of the first member 94 come into contact with each other, and the inner space of the second member 95 and the inner space of the second member 95 The flow path 961a is blocked from each other, and furthermore, the accommodation area 17 and the external space are blocked from each other. That is, in the case of the present embodiment, the closing operation on the operation portion 92 is to release the pressing operation. Due to the closing operation, the second inflow portion 961b of the piston member 96b rises to the top dead center side relative to the projecting portion 941 of the first member 94 .

7(a) to 11(b), the manufacturing method of the sheet material container 300 containing contents according to the present embodiment (hereinafter sometimes referred to as the present method) will be described. 7(a) and 7(b) omit illustration of a portion of the sheet material container 100 other than the upper portion.

First, the sheet material container 100 described above is prepared. More specifically, the container-constituting sheet material 51 is valley-folded at the

folding lines

81, 82 and 84 shown in FIG. The container-constituting sheet material 51 is formed into a bag-like double structure by joining the peripheral edge portions (the inner bag-constituting sheet materials 41) of the container-constituting sheet material 51 together. 5. Here, the valley fold is a way of folding convexly toward the back side in FIG. 5, and the mountain fold is a way of folding convexly toward the front side in FIG.
That is, by joining the peripheral edge portions of the inner bag-constituting sheet material 41 to form the peripheral edge seal portion 42, the inner bag 40 is formed by the inner bag-constituting sheet material 41, and the inner bag 40 is covered with a bag-like shape. is formed.
In this way, as shown in FIGS. 1 and 2, the container-constituting sheet material 51 is formed into a double bag shape, and the sheet material container 100 is obtained. In the state shown in FIGS. 1 and 2, the sheet material container 100 has a flat shape because the storage area 17 has not yet expanded and the filling portion 60 has not been filled with the filling material (see FIG. 8 ( a) see).
As a technique for joining the inner bag-constituting sheet materials 41, for example, heat sealing, ultrasonic sealing, joining with an adhesive, or the like can be used.
In the case of this embodiment, the main body peripheral seal portion 28, the peripheral seal portion 42, and the inner and outer seal portions 43 are arranged at positions corresponding to each other (positions overlapping each other). A general term for the body peripheral seal portion 28, the peripheral seal portion 42, and the inner/outer seal portion 43 is the peripheral seal portion 19 (the peripheral seal portion 19 includes the main body peripheral seal portion 28, the peripheral seal portion 42, and the inner/outer seal portion 43).
In FIGS. 1 and 2, the area where the peripheral seal portion 19 (the main body peripheral seal portion 28, the peripheral seal portion 42, and the inner and outer seal portions 43) is formed is hatched upward to the left. 1 and 2, in the region where the formation region of the peripheral edge seal portion 19 and the formation region of the bag body seal portion 26 overlap, leftwardly rising hatching and rightwardly rising hatching overlap.

A portion of the first sheet portion 31 closer to the top portion-constituting sheet portion 39 than the folding line 85 is a first overlapping portion 31a. The first overlapping portion 31 a is arranged to overlap one half of the top portion-constituting sheet portion 39 in a state before the non-joint portion 24 is filled with the filler.
A portion of the second sheet portion 32 located farther from the bottom-constituting sheet portion 38 than the folding line 86 is a second overlapping portion 32a. The second overlapping portion 32 a is arranged to overlap the other half of the top portion-constituting sheet portion 39 in a state before the non-joint portion 24 is filled with the filler.

Here, in the case of the present embodiment, as shown in FIGS. 1 and 2 , the inner edge of the peripheral seal portion 42 of the extension piece 25 matches the inner edge of the bag body seal portion 26 of the extension piece 25 . More specifically, when viewed in the thickness direction of the extending piece 25, substantially the entire formation area of the peripheral seal portion 42 in the extending piece 25 and the formation area of the bag body seal portion 26 in the extending piece 25 and are superimposed on each other.
As a result, the dimension of the extending piece 25 can be set smaller than in the case where the circumferential edge seal portion 42 and the bag body sealing portion 26 are formed at different positions in the extending piece 25 .
More specifically, in the extension piece 25 , the peripheral edge seal portion 42 and the bag body seal portion 26 are each formed continuously along the edge portion of the extension piece 25 .
A portion of the peripheral seal portion 42 on the front side of the extending piece 25 is connected to a portion of the peripheral seal portion 42 on the top portion-constituting sheet portion 39 . The peripheral seal portion 42 on the front side of the extending piece 25 is formed avoiding the face-to-face connecting portion 65a. Similarly, a portion of the peripheral seal portion 42 on the back side of the extending piece 25 is connected to a portion of the peripheral seal portion 42 on the second seat portion 32 . The peripheral edge seal portion 42 on the back side of the extending piece 25 is formed avoiding the inter-surface connecting portion 65b.
A portion of the bag sealing portion 26 on the front side of the extending piece 25 is connected to a portion of the bag sealing portion 26 on the top portion-constituting sheet portion 39 . The bag body seal portion 26 on the front side of the extending piece 25 is formed avoiding the inter-surface connecting portion 65a. Similarly, a portion of the bag sealing portion 26 on the back side of the extending piece 25 is connected to a portion of the bag sealing portion 26 on the second sheet portion 32 . The bag sealing portion 26 on the back side of the extending piece 25 is formed avoiding the inter-surface connection portion 65b.

Subsequently, the valve portion 90 described above is attached to the spout member 15 of the sheet material container 100 formed in a bag shape. Accordingly, a valve portion 90 is attached to the filling port 15c, and the valve portion 90 connects the open state in which the housing area 17 communicates with the external space through the filling port 15c and the housing area 17 and the external space. A sheet material container 100 can be provided that is switchable between a closed state and a closed state that isolates the power.

Next, a preliminary step is performed to perform at least one of a deaeration process and a purge process using an inert gas on the accommodation area 17 .
In the case of this embodiment, in the preliminary process, the storage area 17 is subjected to the purging process and the degassing process at least once in this order. More specifically, in the preliminary process, for example, a degassing process, a purge process, and a degassing process (second time) are performed in this order.
As shown in FIG. 7(a), when the degassing process is performed, the valve portion 90 is opened by pressing the piston member 96b.
More specifically, the pipe member 210 is inserted into the piston member 96b, and the pipe member 210 is inserted into the spout member 15 until the second inflow portion 961b and the protrusion 941 of the first member 94 are separated from each other. lower relative to As a result, the lumen of the tubular member 210 and the housing area 17 are brought into communication with each other. In this state, the oxygen remaining in the accommodation area 17 is sucked (degassed) through the tube member 210 . As a result, as shown in FIG. 8(a), the first planar portion 40a and the second planar portion 40b of the inner bag 40 are brought into a state of being sufficiently in close contact with each other, and the accommodating region 17 is in a state of being crushed.
Then, purge processing is performed. First, the valve portion 90 is opened as in the case of executing the degassing process. In this state, the housing area 17 is filled with an inert gas (for example, nitrogen) through the pipe member 210 . When the inert gas filling is started, the inert gas passes through the lumen of the tube member 210 and flows into the housing area 17 from the filling port 15c. As a result, as shown in FIG. 8(b), the storage area 17 is filled with the inert gas, and the inner bag 40 is fully inflated.
After stopping the filling of the inert gas, the gas containing the inert gas filled inside the housing area 17 is sucked through the tube member 210 to perform the degassing process again. As a result, as shown in FIG. 8(c), the first planar portion 40a and the second planar portion 40b of the inner bag 40 are brought into sufficient contact with each other, and the storage area 17 is crushed.

Thus, in the case of the present embodiment, the preparatory step is performed before performing the filler filling step of filling the filling portion 60 with the filler. That is, the preliminary process is performed before the structural strength of the container body 20 is ensured by the filling part 60 filled with the filling material.
Therefore, when the purge process is performed, the inert gas can be spread to the area adjacent to the filling section 60 in the housing area 17 . Therefore, since the oxygen remaining in the storage area 17 can be diluted with the inert gas, deterioration (alteration) of the contents 18 can be suppressed.
In addition, since the storage area 17 can be sufficiently crushed when the deaeration process is performed, oxygen can be more reliably sucked from the storage area 17 .
In the preliminary process, for example, either the degassing process or the purging process may not be performed. However, when the purge process is performed, it is preferable to perform the degassing process after the purge process.

Next, a content filling step of filling the content 18 into the storage area 17 is performed. In the content filling process, filling of the content 18 is started from the state where the storage area 17 is crushed by the degassing process. When filling the contents 18, the contents filling process is performed in a state where the valve portion 90 is in an open state, as in the purging process and the degassing process. At this time, the pipe member inserted into the piston member 96b may be the same as the pipe member 210 used in the degassing process and the purge process, or may be a separate member. A pipe member is inserted into the piston member 96b, and in a state where the second inflow portion 961b and the projection portion 941 of the first member 94 are separated from each other, the contents 18 are injected into the storage area 17 through the pipe member. As a result, as shown in FIG. 9( a ), the containing area 17 is expanded by the content 18 .
After the desired amount of the content 18 is filled in the housing area 17 , the tubular member is raised relative to the spout member 15 and removed from the valve portion 90 . As a result, as shown in FIG. 7B, the piston member 96b is lifted, and the second inflow portion 961b of the piston member 96b and the projection portion 941 of the first member 94 are brought into contact with each other. and the external space are cut off from each other.

Next, a filler filling step is performed to fill a filler between the outer film layer 22 and the inner film layer 23 in the non-bonded portion 24 .
The filler is injected into the non-joint portion 24 through an injection port 25 a formed in the extension piece 25 .
As shown in FIG. 10( a ), the extending piece 25 is arranged between the jig member 251 and the filling nozzle 252 arranged below the jig member 251 . In addition, before the extension piece 25 is arranged between the jig member 251 and the filling nozzle 252, the distance (opposing distance) between the jig member 251 and the filling nozzle 252 is shown in FIG. 10(a). It is wider vertically than the state. Thereby, when the extending piece 25 is arranged between the jig member 251 and the filling nozzle 252, it is possible to prevent the extending piece 25 from interfering with the jig member 251 and the filling nozzle 252. . Then, after the extension piece 25 is arranged between the jig member 251 and the filling nozzle 252, the jig member 251 and the filling nozzle 252 are brought close to each other in the vertical direction to obtain the state shown in FIG. 10(a). .
The lower surface of the jig member 251 , for example, abuts against the first extending filling portion 66 , and the upper surface of the filling nozzle faces the second extending filling portion 67 . The inner cavity of the filling nozzle constitutes an internal flow path 253 through which the filling material flows, and the injection port 25a and the opening on the tip side of the filling nozzle 252 face each other in the vertical direction. In addition, for example, an annular silicon ring (not shown) is provided at the tip of the filling nozzle 252 .
Here, in the case of the present embodiment, the extending piece 25 includes a portion of the inner bag-constituting sheet material 41 (the third extending portion 46a and the fourth extending portion 46b). As a result, sufficient rigidity of the extension piece 25 can be ensured, so that the extension piece 25 can be easily arranged so that the lower surface of the jig member 251 abuts against the first extension filling portion 66 . becomes.
The filling material is injected from the opening of the filling nozzle 252 on the tip end side of the internal flow path 253, and is further blown into the injection port 25a to fill the filling portion 60 with the filling material. More specifically, the filler sprayed to the injection port 25a includes the second extending filling portion 67, the second filling portion 62, the third filling portion 63, the first filling portion 61, and the fourth filling portion. 64 in this order and flows into the first extending filling portion 66 . At this time, the jig member 251 prevents the extending piece 25 from being displaced upward due to the spraying of the filler.
As the filling portion 60 is filled with the filling material, the first extending filling portion 66 and the second extending filling portion 67 expand, and as shown in FIG. While maintaining a state in which a part of 66 abuts against jig member 251, the peripheral edge of injection port 25a in second extending filling portion 67 is in airtight contact with the silicon ring. As a result, the internal flow path 253 and the housing area 17 are electrically connected to each other while the injection port 25a is airtightly closed by the silicon ring. can.

Here, during the filling of the filling portion 60 with the filling material, the thickness dimension of each of the first extending filling portion 66 and the second extending filling portion 67 at the distal end portion 25b of the extending piece 25 is equal to the extending portion. At the proximal end portion 25c of the extending piece 25, which gradually increases toward the proximal end side of the projecting piece 25 and is positioned closer to the proximal end than the distal end portion, the first extending filling portion 66 and the second extending filling portion The thickness dimension of each of the portions 67 is substantially constant. The injection port 25a is formed, for example, at the base end portion 25c.
In addition, in the case of the present embodiment, the thickness dimension of each of the first extending filling portion 66 and the second extending filling portion 67 is equal to the thickness of the outer film layer 22 and the inner film layer 23 in the thickness direction of the extending piece 25 . is the separation distance between
As a result, the injection port 25a is formed at a portion of the extending piece 25 where the outer film layer 22 and the inner film layer 23 are sufficiently separated from each other during filling of the filler into the filling portion 60. Therefore, the filling material can be smoothly enclosed in the filling portion 60 .
Furthermore, as described above, in the case of this embodiment, the injection port 25 a is arranged in the outer film layer 22 at the central position in the width direction of the second extending filling portion 67 .
As a result, the injection port 25a is positioned at the center of the bulge of the second extending filling portion 67 during filling of the filling portion 60 with the filling material. Therefore, the filling material can be filled into the filling portion 60 more smoothly.

Although the pressure inside the filling part 60 is not particularly limited, it is preferably higher than the atmospheric pressure, and can be, for example, 10 kPa or more and 500 kPa or less (gauge pressure).

In the filler filling step, after filling the filler between the outer film layer 22 and the inner film layer 23 in the non-bonded portion 24, the outer film layer 22 and the inner film layer 23 are bonded to form a filled portion. A filling portion sealing seal 29a for sealing the container 60 is formed, and at the same time as the filling portion sealing seal 29a, the innermost sheet materials are joined together at the same location to form a housing area sealing seal 29b. In FIGS. 1 and 2, the formation regions of the filling portion sealing seal 29a and the accommodation region sealing seal 29b are indicated by two-dot chain lines.
As a result, the filling part 60 is sealed while being filled with the filling material, and the housing area 17 is sealed except for the filling port 15c.
More specifically, in the case of this embodiment, the filling portion sealing seal 29a is formed in the face-to-

face connection portions

65a and 65b. Therefore, the filling portion sealing seal 29a joins the outer film layer 22 and the inner film layer 23 at the inter-surface connection portion 65a together, and the outer film layer 22 and the inner film layer 23 at the inter-surface connection portion 65b. are joined together. As a result, the connecting portion (face-to-face connection portion 65a) between the first extending filling portion 66 and the fourth filling portion 64 is closed by the filling portion sealing seal 29a, and the second extending filling portion 67 and the second extending filling portion 67 are closed. The communicating portion (inter-surface connecting portion 65b) with the second filling portion 62 is closed.
Similarly, the containment area sealing seal 29b is formed at the face-to-

face connections

65a, 65b. Therefore, the accommodation area sealing seal 29b joins the inner bag-constituting sheet materials 41 at the face-to-face connection portion 65a, and also joins the inner bag-constituting sheet materials 41 at the face-to-face connection portion 65b.

Subsequently, in the case of the present embodiment, a step of cutting off the extending piece 25 is performed after the filling material filling step of filling the filling material. More specifically, for example, the extending piece 25 is cut off from the container body 20 at the proximal end of the extending piece 25, and most of the filling portion sealing seal 29a and the containing area sealing seal 29b remain in the container body 20. Then, the remaining portions of the filling portion sealing seal 29a and the containing area sealing seal 29b are cut off from the container body 20 together with the extending piece 25. As shown in FIG. However, for example, the extension piece 25 is cut off in the vicinity of each of the filling section sealing seal 29a and the housing area sealing seal 29b, and the entirety of each of the filling section sealing seal 29a and the housing area sealing seal 29b is removed from the container body. 20 may remain.
In this way, the sheet material container 300 (see FIG. 6) containing the content in which the filling portion 60 is filled with the filling material is obtained. However, even in the state of the content-filled sheet material container 100 in which the filling portion 60 is filled with the filling material, the extending piece 25 may remain without being cut off.

As described above, the method for manufacturing the sheet material container 300 according to the present embodiment is a method for manufacturing the sheet material container 300 containing contents, and includes a preparatory step of preparing the above-described sheet material container 100 as the sheet material container. , a preliminary step of performing at least one of a deaeration process and a purge process using an inert gas on the storage area 17, a content filling process of filling the storage area 17 with the content 18, and a filler filling step of filling a filler between the outer film layer 22 and the inner film layer 23 in the non-bonded portion 24 in this order.

Here, the content-containing sheet material container 300 may further include, for example, a cap portion 70 (see FIG. 6) attached (for example, detachably attached) to the spout member 15 . In this case, for example, after the filling material filling step, the valve portion 90 is removed from the spout member 15 and the cap portion 70 is attached to the spout member 15 instead. The cap portion 70 includes, for example, a mounting portion 71 which is a female-threaded cylindrical portion detachably screwed to the pouring cylindrical portion 15a, a pump portion 72 fixed to the mounting portion 71, and a pump. A dip tube 77 extending downward from the portion 72 and a head portion 73 held by the pump portion 72 so as to be able to move up and down with respect to the pump portion 72 are provided. When the head portion 73 is pushed (depressed) with respect to the pump portion 72 , the contents 18 are discharged from the discharge port 76 by the action of the pump portion 72 .
However, after the filling material filling step, the spout member 15 may remain attached to the valve portion 90 and a pump portion (not shown) may be attached to the valve portion 90 . In this case, when the piston member 96b is pushed (depressed) toward the body portion 11 side, the contents 18 are discharged from the discharge port by the action of the pump portion.

<Modifications 1 to 4>
Next, modified examples 1, 2, 3 and 4 of the embodiment will be described with reference to FIGS. 12(a) to 12(d). The sheet material container according to each modification differs from the sheet material container 100 according to the above-described embodiment in the points described below, and the other points are the same as the sheet material container 100 according to the above-described embodiment. is.

In Modified Example 1, as shown in FIG. 12A, the inner edge of the peripheral edge seal portion 42 of the extension piece 25 is arranged outside the inner edge of the bag body seal portion 26 of the extension piece 25 . Further, for example, the inner edge of the peripheral edge seal portion 42 of the extension piece 25 is arranged inside the outer edge of the bag body seal portion 26 of the extension piece 25 . That is, when viewed in the thickness direction of the extending piece 25, the portion of the extending piece 25 on the inner edge side of the peripheral seal portion 42 and the portion of the extending piece 25 on the outer edge side of the bag body seal portion 26 are mutually They overlap. On the other hand, when viewed in the thickness direction of the extension piece 25 , the portion of the extension piece 25 on the inner edge side of the bag body seal portion 26 does not overlap the peripheral edge seal portion 42 of the extension piece 25 .
As a result, for example, when the bag body seal portion 26 and the peripheral seal portion 42 are formed by heat-sealing, forming the peripheral seal portion 42 causes overlapping of the forming area of the bag body seal portion 26 in the extension piece 25 . It is possible to suppress reheating of the portion that has not been heated. That is, since the heat history can be reduced, the strength of the bag sealing portion 26 in the extending piece 25 can be ensured.
In addition, when viewed in the thickness direction of the extension piece 25, the portion of the extension piece 25 on the inner edge side of the peripheral edge seal portion 42 and the portion of the extension piece 25 on the outer edge side of the bag body seal portion 26 are mutually Since they overlap, the dimension of the extension piece 25 can be set smaller.

In Modified Example 2, as shown in FIG. 12B, the inner edge of the peripheral edge seal portion 42 of the extension piece 25 matches the outer edge of the bag body seal portion 26 of the extension piece 25 . That is, when viewed in the thickness direction of the extending piece 25 , substantially the entire bag sealing portion 26 of the extending piece 25 does not overlap substantially the entire peripheral seal portion 42 of the extending piece 25 .
As a result, when the bag body seal portion 26 and the peripheral seal portion 42 are formed by heat sealing, substantially the entire formation area of the bag body seal portion 26 in the extension piece 25 can be sealed by forming the peripheral seal portion 42 . , can be suppressed from being reheated. Therefore, since the heat history can be further reduced, the strength of the bag sealing portion 26 in the extending piece 25 can be sufficiently secured.

In Modified Example 3, in the example shown in FIG. 12(c), the inner edge of the peripheral seal portion 42 of the extension piece 25 is separated from the outer edge of the bag body seal portion 26 of the extension piece 25. As shown in FIG. That is, a gap is formed between the inner edge of the peripheral edge seal portion 42 of the extension piece 25 and the outer edge of the bag body seal portion 26 of the extension piece 25 .
As a result, when the bag body seal portion 26 and the peripheral edge seal portion 42 are formed by heat sealing, the formation of the peripheral edge seal portion 42 allows the entire formation area of the bag body seal portion 26 in the extending piece 25 to be Reheating can be suppressed more reliably. Therefore, since the heat history can be further reduced, the strength of the bag sealing portion 26 in the extending piece 25 can be more sufficiently secured.

In Modified Example 4, as shown in FIG. 12(d), the central portion in the width direction of the distal end portion of the extending piece 25 (the end portion on the side opposite to the second sheet portion 32 side) is locally formed into a bag body. This is a non-formation region of the seal portion 26 . That is, the outer film layer 22 and the inner film layer 23 are not bonded to each other at the tip of the extending piece 25, and the non-bonded portion is an injection port 25a for injecting the filler. constitutes

According to the above-described Modifications 1 to 4, the storage area 17 is also sealed from the external space except for the filling port 15c. The area 17 can be sufficiently degassed. As a result, it is possible to more reliably prevent the content 18 filled in the storage area 17 from deteriorating (deteriorating) due to contact with the oxygen remaining in the storage area 17 .

<Modification 5>
Next, Modification 5 of the embodiment will be described with reference to FIG. 13 . The method for manufacturing a sheet material container containing contents according to the present modification differs from the method for manufacturing a sheet material container containing contents 300 according to the above-described embodiment in the points described below. It is the same as the manufacturing method of the content-containing sheet material container 300 according to the embodiment. In addition, in FIG. 13, the shape of the sheet material container 100 is shown typically.

In the case of this modification, as shown in FIG. 13, the liquid surface of the content 18 after filling in the content filling step forms the accommodation area sealing seal 29b (the accommodation area sealing seal 29b in the extension piece 25). The content filling process is performed so that the position is lower than the region). More preferably, the content filling step is performed with the sheet material container 100 tilted so that the liquid level of the content 18 after filling in the content filling step is at a position lower than the accommodation area sealing seal 29b.
As a result, when forming the accommodation area sealing seal 29b, in the area of the extension piece 25 where the accommodation area sealing seal 29b is formed, the innermost sheet materials (the inner bag-constituting sheet materials 41) are separated from each other. It is possible to suppress the content 18 from intervening in the Therefore, the inner bag-constituting sheet materials 41 can be joined more reliably in the area where the accommodation area sealing seal 29b is formed in the extending piece 25, so that the accommodation area 17 can be sealed well. .

Further, in the case of this modified example as well, the extension piece 25 extends from the upper end portion of the container body 20 as in the embodiment.
Therefore, it is easy to keep the sheet material container 100 tilted so that the liquid level of the content 18 is lower than the storage area sealing seal 29b. Therefore, when forming the accommodation area sealing seal 29b, the innermost sheet materials (the inner bag forming sheet materials 41) can be more reliably formed in the area where the accommodation area sealing seal 29b is formed in the extending piece 25. ), it is possible to prevent the content 18 from intervening between the layers.

Various components of the sheet material container 100 and the content-filled sheet material container 300 do not need to exist independently of each other. is formed of multiple members, a component is part of another component, a part of a component overlaps a part of another component, etc. Permissible.

Further, for example, in each of the above-described embodiments, an example in which the sheet material container 100 (or the sheet material container 300 containing contents) includes the inner bag 40 has been described, but the present invention is not limited to this example, The material container 100 (or the sheet material container 300 containing the contents) may not have the inner bag 40 . When the sheet material container 100 (or the sheet material container 300 containing contents) does not include the inner bag 40 , the container body 20 constitutes the containing area 17 . That is, the container body 20 is formed and the storage area 17 is formed by joining parts of the inner film layer 23 of the bag-constituting sheet material 21 at the peripheral edge seal portion 42 .
Even when manufacturing the sheet material container 300 without the inner bag 40, the manufacturing method is the same as that of the above-described embodiment.

10 Bag body 11 Body part 13 Bottom part 14 Top part 15 Spout member 15c Filling port 17 Storage area 18 Contents 20 Container main body 21 Bag-constituting sheet material 22 Outer film layer 23 Inner film layer 24 Non-bonded part 25 Extension piece 25a Note Inlet 26 bag body sealing part 40 inner bag 41 inner bag-constituting sheet material 51 container-constituting sheet material 60 filling part 100 sheet material container 210 pipe member 300 sheet material container (sheet material container containing contents)

Claims

A sheet material container comprising one or more sheet materials including a bag-constituting sheet material having an outer film layer and an inner film layer laminated to each other,
a container body;
an extension piece extending from the container body;
a storage area that is continuously formed over the inside of the container body and the inside of the extension piece and stores contents;
a filling port that communicates an internal portion of the container body in the accommodation area with an external space of the sheet material container;
a bag that is made of the bag-constituting sheet material and surrounds the accommodation area;
with
The bag-constituting sheet material includes a bag-body seal portion which is a joint portion between the outer film layer and the inner film layer, and a non-bonded portion in which the outer film layer and the inner film layer are partially unbonded. and a filling portion capable of enclosing a filler between the outer film layer and the inner film layer in the non-bonded portion,
The extending piece has an injection port for injecting the filler into the filling portion,
The sheet material container has a peripheral edge seal portion in which the one or more sheet materials are folded and peripheral edge portions of the innermost sheet material among the one or more sheet materials are joined to each other,
The accommodation area is defined by the peripheral seal,
A portion of the peripheral seal portion is arranged in the extension piece in a region outside the injection port,
A sheet material container in which the containment area is sealed from the external space except for the filling port.
The filling portion is arranged on one side and the other side of the extending piece in the thickness direction of the extending piece with the accommodation area inside the extending piece interposed therebetween. and a second extending filling portion,
2. The sheet material container according to claim 1, wherein the filling port is formed in a portion of the outer film layer defining at least one of the first extending filling portion and the second extending filling portion. .
The inner edge of the peripheral seal portion of the extension piece is aligned with the inner edge of the bag body seal portion of the extension piece, or is arranged outside the inner edge of the bag body seal portion of the extension piece. 3. The sheet material container according to claim 1 or 2.
The sheet material container according to claim 1 or 2, wherein the inner edge of the peripheral seal portion of the extending piece matches the outer edge of the bag body sealing portion of the extending piece.
The sheet material container according to claim 1 or 2, wherein the inner edge of the peripheral sealing portion of the extending piece is separated from the outer edge of the bag body sealing portion of the extending piece.
2. The method according to claim 1, wherein the outer film layer and the inner film layer are not bonded to each other at the tip of the extending piece, and the unbonded portion constitutes the injection port. A sheet material container as described.
further comprising an inner bag arranged inside the bag body,
The sheet material container according to any one of claims 1 to 6, wherein the inner bag is formed of an inner bag-constituting sheet material that is the innermost sheet material among the one or more sheet materials.
The sheet material container according to claim 7, wherein the inner bag-constituting sheet material is formed in the same shape as the bag-constituting sheet material.
further comprising an inner bag arranged inside the bag body,
The inner bag is composed of an inner bag-constituting sheet material that is the innermost sheet material among the one or more sheet materials,
The bag-constituting sheet material is arranged on one side and the other side of the extending piece in the thickness direction of the extending piece with the housing area inside the extending piece interposed therebetween. and a second extension that is
The inner bag-constituting sheet material is arranged on one side and the other side of the accommodation area inside the extension piece in the thickness direction of the extension piece. and a fourth extension,
The extension piece is configured by joining peripheral edge portions of the first extension portion, the second extension portion, the third extension portion, and the fourth extension portion to each other. A sheet material container according to claim 1 .
The filling portion is arranged on one side and the other side of the extending piece in the thickness direction of the extending piece with the accommodation area inside the extending piece interposed therebetween. and a second extending filling portion,
10. The sheet material container according to claim 9, wherein the filling port is formed in a portion of the outer film layer defining at least one of the first extending filling portion and the second extending filling portion. .
The container body has a body and a bottom,
The sheet material container according to any one of claims 1 to 10, wherein the extension piece extends from the upper end portion of the container body.
The container body has a body, a top and a bottom,
The sheet material container according to any one of claims 1 to 10, wherein the extension piece extends from a boundary portion between the body portion and the top portion.
A valve part attached to the filling port,
2. The valve part is switchable between an open state in which the housing area communicates with the external space through the filling port and a closed state in which the housing area and the external space are mutually isolated. 13. The sheet material container according to any one of Claims 12 to 12.
A method of manufacturing a filled sheet material container comprising:
A preparation step of preparing the sheet material container according to any one of claims 1 to 12 as the sheet material container;
a preliminary step of performing at least one of a deaeration process and a purge process using an inert gas on the accommodation area;
a content filling step of filling the content in the accommodation area;
a filler filling step of enclosing the filler between the outer film layer and the inner film layer in the non-bonded portion;
A method of manufacturing a sheet material container containing a content in this order.
In the preliminary step, the purging process and the degassing process are performed at least once in this order,
15. The manufacturing method of a sheet material container containing a content according to claim 14, wherein in the content filling step, filling of the content is started from a state in which the containing area is crushed by the degassing process.
In the preparation step, the sheet material container includes a valve portion attached to the filling port. preparing a sheet material container that can be switched between a closed state that isolates the storage area and the external space from each other;
16. The method of manufacturing a sheet material container containing contents according to claim 14 or 15, wherein the valve portion is placed in the open state when the deaeration process or the purge process in the preliminary step is performed.
In the filling material filling step,
After filling the filler between the outer film layer and the inner film layer in the non-bonded portion,
A filling part sealing seal for sealing the filling part is formed by joining the outer film layer and the inner film layer, and the sheet material of the innermost layer is formed at the same place at the same time as the filling part sealing seal. 17. A method of manufacturing a filled sheet material container according to any one of claims 14 to 16, wherein the containers are joined together to form a containment area sealing seal.
the content is a liquid,
18. The sheet material container with content according to claim 17, wherein the content filling step is performed so that the liquid level of the content after filling in the content filling step is at a position lower than the accommodation area sealing seal. Production method.
The manufacturing method of a sheet material container containing a content according to claim 18, wherein the content filling step is performed while the sheet material container is tilted.
The method for manufacturing a sheet material container containing a content according to any one of claims 15 to 19, wherein the step of cutting off the extending piece is performed after the filling material filling step of enclosing the filling material.