JP2022180794A - Sheet material container - Google Patents

Abstract

To provide a sheet material container capable of easily using up a liquid agent to the last even if a dip tube is omitted or shortened.SOLUTION: A sheet material container 100 includes an inner bag 40, a container body 20 surrounding the inner bag 40, a dispenser 70, and a filling part 60 in which a filler is sealed between an outer film layer 22 and an inner film layer 23. The dispenser 70 has a suction port 70a arranged within a storage area 17, and a discharge port 76 arranged outside the storage area 17, and is configured to suck a liquid agent 18 in the storage area 17 from the suction port 70a, and to discharge the liquid agent from the discharge port 76 to the outside of the sheet material container 100. An inner bag-constituting sheet material 41 in a position below the suction port 70a has a joint part 27 where a part defining the storage area 17 and the inner film layer 23 are joined to each other.SELECTED DRAWING: Figure 13

Description

The present invention relates to sheet material containers.

An inner bag, which is composed of an inner bag-constituting sheet material and defines a storage area for containing a liquid agent, a container body, which is composed of a main body-constituting sheet material and surrounds the inner bag, and a filler, are enclosed. A sheet material container with a filling part and a dispenser with a pump and a dip tube is described, for example, in US Pat.

JP 2019-202789 A

By the way, from the viewpoint of reducing the resin material used for manufacturing the sheet material container, it is possible to omit or shorten the dip tube, but in this case, it is assumed that it will be difficult to use up the liquid agent to the end.

TECHNICAL FIELD The present invention relates to a sheet material container that can easily use up liquid medicine to the end even if a dip tube is omitted or shortened.

In the present invention, the container body is composed of an inner bag-constituting sheet material, and is composed of an inner bag defining a storage area for containing a liquid agent, and a main body-constituting sheet material, surrounding the inner bag. and a dispenser, wherein the body-constituting sheet material has an outer film layer and an inner film layer laminated to each other, and the body-constituting sheet material includes the outer film layer and the inner film layer. a body seal portion to which the inner film layer is bonded; and a non-bonded portion to which the outer film layer and the inner film layer are partially non-bonded, and the outer film at the non-bonded portion. The dispenser has a filling portion in which a filler is enclosed between the layer and the inner film layer, and the dispenser includes a suction port arranged within the accommodation area and a discharge outlet arranged outside the accommodation area. and an outlet, wherein the liquid agent in the storage area is sucked from the suction port and discharged from the discharge port to the outside of the sheet material container at the time of discharge, and is below the suction port. The sheet material container has, at the position of (1), a joint portion where the portion of the inner bag-constituting sheet material defining the accommodation area and the inner film layer are joined to each other.

According to the present invention, even if the dip tube is omitted or shortened, it is possible to easily use up the liquid medicine to the end.

1 is a perspective view of a sheet material container according to a first embodiment; FIG. It is a rear view of the sheet material container which concerns on 1st Embodiment. FIG. 3 is an exploded perspective view showing an outer film layer and an inner film layer of the main body-constituting sheet material in the first embodiment; 3 is an exploded perspective view showing an inner bag-constituting sheet material and a main body-constituting sheet material in the first embodiment; FIG. FIG. 3 is a plan view showing a container-constituting sheet material having an inner bag-constituting sheet material and a main body-constituting sheet material that are laminated to each other in the first embodiment. Fig. 2 is a plan view showing the sheet material container before enclosing the filler according to the first embodiment; FIG. 3 is a plan cross-sectional view taken along line AA shown in FIG. 2; FIG. 8 is a plan cross-sectional view in a state where the amount of liquid agent is less than that in FIG. 7; FIG. 9 is a plan cross-sectional view in a state where the amount of liquid agent is less than that in FIG. 8; FIG. 10 is a plan cross-sectional view in a state where the amount of liquid agent is less than that in FIG. 9; FIG. 8 is a cross-sectional view taken along line AA of FIG. 7; FIG. 9 is a cross-sectional view taken along line AA of FIG. 8; FIG. 10 is a cross-sectional view taken along line AA of FIG. 9; FIG. 11 is a cross-sectional view taken along line AA of FIG. 10; FIG. 11 is a plan view showing a container-constituting sheet material having an inner bag-constituting sheet material and a main body-constituting sheet material that are laminated to each other in a second embodiment;

Preferred embodiments of the present invention are 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.

[First Embodiment]
First, a first embodiment will be described with reference to FIGS. 1 to 15. FIG.
A sheet material container 100 according to the present embodiment is composed of an inner bag-constituting sheet material 41, and is composed of an inner bag 40 defining a storage area 17 for containing a liquid agent 18, and a main body-constituting sheet material 21. The cage includes a container body 20 surrounding an inner bag 40 and a dispenser 70. - 特許庁
The body-constituting sheet material 21 has an outer film layer 22 and an inner film layer 23 laminated to each other.
The body-constituting sheet material 21 includes a body seal portion 26 where the outer film layer 22 and the inner film layer 23 are joined, and a non-joined portion 24 where the outer film layer 22 and the inner film layer 23 are partially unjoined. and a filling portion 60 in which a filler is filled between the outer film layer 22 and the inner film layer 23 in the non-bonded portion 24 .
The dispenser 70 has a suction port 70 a arranged within the housing area 17 and a discharge port 76 arranged outside the housing area 17 .
The dispenser 70 is configured to suck the liquid agent 18 in the storage area 17 from the suction port 70 a and to eject the liquid agent 18 from the ejection port 76 to the outside of the sheet material container 100 at the time of ejection. At a position below the suction port 70a, there is a joint portion 27 where the portion of the inner bag-constituting sheet material 41 that defines the accommodation area 17 and the inner film layer 23 are joined to each other.

As shown in FIGS. 1 and 2, the sheet material container 100 can stand on its own and the structural strength of the container body 20 is ensured by enclosing the filler in the filling portion 60 . The inner bag 40 collapses as the amount of the liquid medicine 18 contained in the containing area 17 decreases, but the container body 20 can maintain its independent shape as shown in FIG. 1 and the like.

According to this embodiment, the portion of the inner bag-constituting sheet material 41 that defines the accommodation area 17 and the inner film layer 23 included in the container body 20 (main body-constituting sheet material 21) are located below the suction port 70a. are joined to each other by a joint portion 27 of . As a result, a part of the portion of the inner bag-constituting sheet material 41 defining the containing area 17 is held by the container body 20, so that as the amount of the liquid medicine 18 contained in the containing area 17 decreases, , it is possible to prevent the inner bag 40 from being completely crushed at an early stage in the vicinity of the suction port 70a. As a result, the state in which the flow path 98 leading to the suction port 70a is secured inside the accommodation area 17 can be maintained until the end of the period in which the sheet material container 100 is used, so a dip tube (extension member) (not shown) is omitted. Alternatively, even if it is shortened, the liquid agent 18 can be satisfactorily used up to the end (substantially the entire amount of the liquid agent 18 can be discharged).

In the present invention, the type of liquid agent 18 is not particularly limited. Liquid agent 18 includes, for example, shampoo, rinse, body soap, detergent, bleach, softener, beverage, food, engine oil, chemicals, and the like.
The viscosity of the liquid agent 18, for example, at 30° C. is preferably 1 mPa·s or more and 120,000 mPa·s or less (measured with a Brookfield viscometer. ), more preferably from 1 mPa·s to 60,000 mPa·s.

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 the case of this embodiment, the sheet material container 100 has a bottom portion 13 (FIG. 2) as a bottom portion, and can stand on its own while the bottom portion 13 is placed on a horizontal placement surface.

In the present embodiment, the positional relationship (vertical relationship, etc.) of each component of the sheet material container 100 will be described with the sheet material container 100 standing on its own as shown in FIGS. 1 and 2, unless otherwise specified. It explains the positional relationship of. 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 (back side of the paper surface in FIG. 2) is called the front side, and the back side of the sheet material container 100 (the front side of the paper surface of FIG. 2) is called the rear side. The right side (the right side in FIG. 2) is referred to as the left side, and the right side (the left side in FIG. 2) as viewed from the front of the sheet material container 100 is referred to as the right side. Further, the left-right direction of the sheet material container 100 may be referred to as the 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 .
The container body 20 surrounds the accommodation area 17 (the inner bag 40). 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 .

The front shape of the trunk 11 is not particularly limited, but in the case of the present embodiment, for example, as shown in FIG. It is formed in a convex arc shape.
As shown in FIG. 7, the body 11 has a first planar portion 20a (front panel) and a second planar portion 20b (rear panel) facing each other with the accommodation area 17 interposed therebetween. have. The first planar portion 20a is positioned on the front side, and the second planar portion 20b is positioned on the rear side (see also FIGS. 1 and 2).
The first planar portion 20a is, for example, bilaterally symmetrical, and the second planar portion 20b is also bilaterally symmetrical, for example. In addition, the first planar portion 20a and the second planar portion 20b are formed symmetrically in the front-rear direction, except for an inter-surface connecting portion 65 of the filling portion 60, which will be described later, for example.
The first planar portion 20a protrudes forward and the second planar portion 20b protrudes rearward.
The container body 20 is formed by bending the main body forming sheet material 21 (see FIGS. 3 and 4) and joining the peripheral edge portions of the main body forming sheet material 21 to each other (in the case of the present embodiment, the inner bag constituting the inner bag 40). are joined to each other via the constituent sheet material 41).

The planar shape of the top portion 14 is not particularly limited. It is formed in a shape in which the front-to-rear width is reduced as it goes toward. The top portion 14 is formed in, for example, a horizontally long tonsil shape.

The container body 20 includes a gusset peripheral seal piece 45 arranged along the peripheral edge of the top portion 14 and side seal pieces 46 extending vertically along the left and right edges of the body portion 11 . , is equipped with The gusset peripheral seal piece 45 and the side seal piece 46 are, for example, erected toward the outside of the container body 20 .

The gusset peripheral edge seal piece 45 surrounds the top 14 in a circular fashion, except for, for example, a portion where an inter-surface connecting portion 65 (to be described later) exists.
The gusset peripheral edge seal piece 45 includes a first planar portion side seal piece 45a arranged along the boundary between the gusset portion (top portion 14) and the first planar portion 20a, and the gusset portion and the second surface. and a second planar portion side seal piece 45b arranged along the boundary with the shaped portion 20b.

As mentioned above, the sheet material container 100 includes an inner bag 40 defining a containment area 17 and the container body 20 covers the inner bag 40 .
The inner bag 40 is formed, for example, by joining together portions of the inner bag-constituting sheet material 41 at the peripheral edges (see FIG. 4). 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. The inner bag 40 has a housing area 17 inside the inner bag 40 .

As shown in FIGS. 7 and 11, in the case of the present embodiment, the inner bag 40 includes a trunk portion (second trunk portion 47 in the present embodiment) and a bottom portion (second bottom portion 48 in the present embodiment). have
The trunk portion (second trunk portion 47) has a first main surface portion 40a and a second main surface portion 40b facing the first main surface portion 40a with the accommodation area 17 interposed therebetween. As an example, the first main surface portion 40a is located on the front side with the accommodation area 17 interposed therebetween, and the second main surface portion 40b is located on the back side.
The inner bag 40 is formed in the same shape as the container body 20, for example. More specifically, the first planar portion 20a of the body portion 11 of the container body 20 is arranged along the first main surface portion 40a of the second body portion 47 of the inner bag 40, It covers the first main surface portion 40a of the body portion 47 .
The second planar portion 20b of the body portion 11 of the container body 20 is arranged along the second main surface portion 40b of the second body portion 47 of the inner bag 40, and the second surface portion 40b of the second body portion 47 of the inner bag 40 It covers the second main surface portion 40b.

In the case of the present embodiment, for example, the spout member 15 provided to penetrate the top portion 14 is provided, and the dispenser 70 is attached (for example, detachably attached) to the spout member 15 .
More specifically, as shown in FIGS. 2 and 3, the spout member 15 includes, for example, a cylindrical ejection tube portion 15a through which the liquid agent 18 passes, and one end (lower end) of the ejection tube portion 15a in the axial direction. A plate-like plate-like portion 15b provided in an arrangement orthogonal to the axial direction is integrally provided. 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 15b is joined to the main body-constituting sheet material 21 via the inner bag-constituting sheet material 41. As shown in FIG. However, the present invention is not limited to this example, and the plate-like portion 15b may be directly joined to the inner film layer 23 of the sheet material 21 constituting the main body. 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 joining 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 body sealing portion 26 (see FIG. 3) positioned around the insertion hole 21a.

In the case of this embodiment, the dispenser 70 has a cylinder 77, and the lower end of the cylinder 77 constitutes the lower end of the dispenser 70 and the suction port 70a.
More specifically, dispensers generally have an extension member (dip tube) connected below cylinder 77, but in this embodiment, dispenser 70 does not have such an extension member. .
Therefore, the resin material used for manufacturing the sheet material container 100 can be reduced. In addition, it is possible to prevent the liquid agent 18 from remaining inside the extension member.
As shown in FIGS. 1 and 2, the dispenser 70 includes, for example, a mounting portion 71 which is a female-threaded cylindrical portion detachably screwed to the dispensing tube portion 15a, and a mounting portion 71 fixed to the mounting portion 71. a pump 72 , a cylinder 77 extending downward from the pump 72 , and a head portion 73 held by the pump 72 so as to be vertically movable with respect to the pump 72 .
Here, the height position of the suction port 70a is preferably the same as or higher than the middle position between the upper end and the lower end of the second body portion 47 . In the case of this embodiment, as shown in FIG. 11, the height position of the suction port 70a is higher than the intermediate position between the upper end and the lower end of the second body portion 47. As shown in FIG. Therefore, the height position of the lower end of the cylinder 77 is higher than the intermediate position between the upper end and the lower end of the second body portion 47 .
The head portion 73 has, for example, a support cylinder portion 74 projecting upward from the pump 72 and a nozzle portion 75 horizontally projecting from the upper end portion of the head portion 73 . A discharge port 76 for discharging the liquid agent 18 is formed.
In the case of this embodiment, as an example, the pump 72 is a hand pump. The liquid agent 18 is sucked from the suction port 70 a and discharged from the discharge port 76 to the outside of the sheet material container 100 .

In the case of this embodiment, as shown in FIGS. A second filling portion 62 formed in a circular shape along the peripheral portion of the dihedral portion 20b, and a third filling portion 63 (FIG. 11) formed in a circular shape along the peripheral portion of the bottom portion 13. , and a fourth filling portion 64 ( FIG. 1 ) which is formed in the top portion 14 in a circular manner around the pouring cylinder portion 15 a.
The lower edge of the first filling portion 61 is connected to the front edge of the third filling portion 63, and the lower edge of the second filling portion 62 is connected to the rear edge of the third filling portion 63. A center portion of the upper end portion in the width direction is connected to a center portion of the front end portion of the fourth filling portion 64 in the width direction.
Since the sheet material container 100 includes the filling portion 60 having such a structure, sufficient structural strength is ensured over almost the entire container body 20 .
In the case of this embodiment, the entire filling portion 60 is formed in one piece.
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.
In the case of this embodiment, the first filling portion 61 and the fourth filling portion 64 are connected via the face-to-face connection portion 65 .

As shown in FIGS. 3 and 5, the body-constituting sheet material 21 includes an outer film layer 22 that forms the outer surface of the container body 20 and an inner film layer 23 that forms the inner surface of the container body 20. It is constructed by stacking and bonding. That is, as an example, in the case of this embodiment, the body-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 body-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.

As described above, the body-constituting sheet material 21 is formed with the non-bonded portion 24 (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 .
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 FIG. 3 , in each of the outer film layer 22 and the inner film layer 23 , the regions that are joined together to form the main body seal portion 26 are hatched upward to the right for the sake of convenience.
In FIGS. 3 and 4, in the body-constituting sheet material 21, the outer film layer 22 and the inner film layer 23 are bonded to each other to define the non-bonded portion 24, that is, the formation region of the 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 main body-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 main body 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 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.

Here, the sheet material container 100 includes an outside air introduction portion for taking in outside air into the gap between the inner surface of the container body 20 and the outer surface of the inner bag 40 . In the case of this embodiment, the outside air introduction portions are, for example, as shown in FIG. 97.
The outside air intake hole 96 and the outside air intake hole 97 are arranged at different positions, for example. As an example, as shown in FIG. 2, the outside air intake hole 96 is arranged in the lower portion of the second planar portion 20b of the container body 20, and the outside air intake hole 97 is arranged in the second planar portion 20b of the container body 20. It is arranged above the portion 20b.
The outside air intake hole 96 and the outside air intake hole 97 communicate with each other through a gap between the outer film layer 22 and the inner film layer 23 . For this reason, the inner surface of the container body 20 and the outer surface of the inner bag 40 pass through the outside air intake hole 96, the interlayer gap between the outer film layer 22 and the inner film layer 23, and the outside air intake hole 97 in this order. Outside air can be introduced into the gap.

In this embodiment, each of the outer film layer 22 and the inner film layer 23 has a layered 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.

It is preferable that the main body-constituting sheet material 21 includes a resin layer of any one of polyethylene, polypropylene, polyester, and polyamide.
The material of the resin layer that constitutes the outer film layer 22 and the inner film layer 23 of the main body-constituting sheet material 21 is not particularly limited. ), 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), Polypropylene materials such as isotactic PP, syndiotactic PP, atactic PP, random PP, block PP, or polyethylene terephthalate (PET), amorphous polyethylene terephthalate (amorphous PET), polybutylene terephthalate (PBT), Polyester-based materials such as polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), or polyamides such as oriented nylon (ONy), unoriented nylon (CNy), nylon 6, nylon 66, nylon 11, nylon 12, MXD6 Any one of the above-mentioned polyethylene-based materials is more preferable, and among these, the above polyethylene-based materials are particularly preferable.

The outer film layer 22 has, for example, a four-layer structure formed by laminating four resin layers, a first layer, a second layer, a third layer and a fourth layer, in this order.
Among these layers, the first layer constitutes the outer surface of the container body 20 . The first layer is made of polyethylene terephthalate (PET) or oriented nylon (ONy), for example. The primary function of the first layer is to provide the container body 20 with glossiness and printability and to ensure the rigidity of the container body 20 .
The second layer is, for example, a layer of transparent vapor-deposited PET made of polyethylene terephthalate in which silica and/or alumina is vapor-deposited on the surface of the second layer on the first layer side. A main function of the second layer is to provide gas barrier properties to the container body 20 .
The third layer is made of stretched nylon, for example. A main function of the third layer is to ensure pinhole resistance of the container body 20 .
The fourth layer is made of, for example, linear low density polyethylene (LLDPE). A main function of the fourth layer is to ensure heat sealability with the inner film layer 23 .

As the layer structure of the inner film layer 23, in addition to the same layer structure as the first to fourth layers of the outer film layer 22, a fifth layer made of, for example, linear low density polyethylene (LLDPE) is added. structure provided. The fifth layer is a layer adjacent to the first layer and constitutes the surface of the inner film layer 23 opposite to the fourth layer. A main function of the fifth layer is to ensure heat sealability with the outer film layer 22 .
A main function of the fourth layer of the inner film layer 23 is to ensure heat sealability with the inner bag-constituting sheet material 41 .
However, the layer structure of the outer film layer 22 and the inner film layer 23 is not limited to the above example, and the material of each layer constituting the outer film layer 22 and the inner film layer 23 is not limited to the above example.

The inner bag forming sheet material 41 forming the inner bag 40 has, for example, a three-layer structure formed by laminating a first layer, a second layer and a third layer in this order.
Among them, the first layer is made of, for example, linear low-density polyethylene. A main function of the first layer is to ensure heat sealability with the body-constituting sheet material 21 (heat sealability with the inner film layer 23).
The second layer is, for example, a layer of transparent vapor-deposited stretched nylon composed of stretched nylon in which silica and/or alumina is vapor-deposited on the surface of the second layer on the first layer side. Main functions of the second layer include ensuring gas barrier properties and pinhole resistance.
The third layer is made of, for example, linear low-density polyethylene. A main function of the third layer is to secure the heat-sealing property between the inner bag-constituting sheet materials 41 .
Note that the layer structure of the inner bag-constituting sheet material 41 is not limited to the structure described here.

As shown in FIGS. 4 and 5, the inner bag-constituting sheet material 41 is laminated on the main body-constituting sheet material 21, and as shown in FIG. The outer film layer 22 and the inner film layer 23 are joined to each other, and the outer film layer 22 and inner film layer 23 are joined to each other. Thus, the container-constituting sheet material 51 is constituted by the main body-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 main 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 main body-constituting sheet material 21 includes, for example, a first sheet portion 31 that constitutes the first planar portion 20a and a second sheet that constitutes the second planar portion 20b. It has a portion 32 , a bottom portion-constituting sheet portion 38 that constitutes the bottom portion 13 , a top portion-constituting sheet portion 39 that constitutes the top portion 14 , and a tubular extension portion 25 . The extending portion 25 extends outward from the second seat portion 32, for example.
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 .

In the non-joint portion 24, a portion 24b that becomes the fourth filling portion 64 is formed in a circular shape surrounding the insertion hole 21a, as shown in FIG. 6, for example. More specifically, for example, the outer edge (outline) of the portion 24b is one size smaller than the outer edge of the top-constituting sheet portion 39, and the inner edge of the portion 24b is one size smaller than the insertion hole 21a. It has a large circular shape.

In the case of this embodiment, the inner bag-constituting sheet material 41 is formed in the same shape as the portion of the main body-constituting sheet material 21 excluding the extending portion 25 .
More specifically, as shown in FIGS. 4 and 5, the inner bag-constituting sheet material 41 forms, for example, a first main surface forming portion 91 forming the first main surface portion 40a and a first main surface portion 40a. It has a second main surface forming portion 92 and a bottom portion forming portion 93 forming a bottom portion (the second bottom portion 48 in the case of the present embodiment).
A peripheral portion of a half portion 94 a of the bottom portion forming portion 93 on the side of the first main surface forming portion 91 is joined to the peripheral portion of the first main surface forming portion 91 to form a first peripheral joint portion 94 .
A peripheral edge portion of a half portion 95 a of the bottom portion forming portion 93 on the side of the second main surface forming portion 92 is joined to a peripheral portion of the second main surface forming portion 92 to form a second peripheral joint portion 95 .
More specifically, both side edges of the half portion 94 a on the first main surface forming portion 91 side are joined to the lower ends of the corresponding side edge portions of the first main surface forming portion 91 . Similarly, both side edges of the half portion 95 a on the second main surface forming portion 92 side are joined to the lower ends of the corresponding side edge portions of the second main surface forming portion 92 .
In addition, in FIG. 5, the sealing boundary line 41a of the inner bag-constituting sheet material 41 is indicated by a chain double-dashed line for convenience. The seal boundary line 41a is a boundary line between a region where the inner bag-constituting sheet material 41 is joined (sealed) to the main body-constituting sheet material 21 and another region of the inner bag-constituting sheet material 41, and also the container-constituting sheet material 51. is a boundary line between an area where the inner bag-constituting sheet materials 41 are joined together when the sheet material container 100 is formed using , and another 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.

The container-constituting sheet material 51 is folded along 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 of 51 (the inner bag-constituting sheet materials 41 to each other). 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 edges of the inner bag-constituting sheet material 41 to form the inner bag sealing portion 42 (see FIG. 1), the inner bag 40 is formed by the inner bag-constituting sheet material 41 and the inner bag 40 is formed. A bag-shaped container body 20 covering the bag 40 is formed.
In the case of this embodiment, the inner bag seal portion 42 includes a side joint portion 42a (see FIG. 6) where the side edges of the first main surface portion 40a and the second main surface portion 40b are joined together. In other words, the side edge portions of the first main surface portion 40a and the second main surface portion 40b are joined to each other via the side joint portions 42a. In addition, the inner bag seal portion 42 includes, for example, a bottom peripheral edge joint portion 42b (see FIG. 6) arranged along the peripheral edge of the second bottom portion 48. As shown in FIG. A first peripheral joint 94 is formed by a portion of the bottom peripheral joint 42b. Similarly, a second peripheral joint 95 is formed by a portion of the bottom peripheral joint 42b.
In addition, the bending line 83 is arranged, for example, at a position that substantially bisects the bottom portion forming portion 93 in the front-rear direction, and extends in the left-right direction. More specifically, as an example, the half portion 94a on the side of the first principal surface constituting portion 91 is a portion of the bottom portion constituting portion 93 on the side of the first principal surface constituting portion 91 with respect to the bending line 83. The half portion 95a on the side of the surface forming portion 92 is the portion of the bottom portion forming portion 93 on the side of the second main surface forming portion 92 with the bending line 83 as a reference. Then, as described above, the bottom forming portion 93 is mountain-folded along the folding line 83 . Therefore, in the state in which the bottom portion forming portion 93 is folded (see FIG. 6), the height position of the folding line 83 matches the height position of the upper edge of the bottom portion forming portion 93 .
Further, in the case of the present embodiment, the portion of the inner bag-constituting sheet material 41 that defines the accommodation area 17 is the first main surface portion 40a, the second main surface portion 40b, and the formation of the inner bag seal portion 42 in the bottom portion constituting portion 93. This is the part excluding the area.
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 body peripheral edge seal portion 28, the inner bag seal portion 42, and the inner/outer seal portion 43 are arranged at positions corresponding to each other (positions overlapping each other). The general term for the body peripheral seal portion 28, the inner bag 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 inner bag seal portion 42, and the inner/outer seal portion 43). ).
Therefore, in the case of this embodiment, each of the gusset peripheral seal piece 45 and the side seal piece 46 includes the main body peripheral seal portion 28 , the inner bag seal portion 42 and the inner/outer seal portion 43 .
However, the present invention is not limited to this example, and the gusset peripheral seal piece 45 and the side seal piece 46 may be composed of the main body peripheral seal portion 28 only.

Here, as an example, one of the first principal surface portion 40 a and the second principal surface portion 40 b is selectively bonded to the inner film layer 23 at the bonding portion 27 . In other words, the joint portion 27 is selectively formed on one of the first main surface portion 40a and the second main surface portion 40b.
As a result, one of the first principal surface portion 40 a and the second principal surface portion 40 b is selectively held by the container body 20 . Therefore, it is possible to prevent the first main surface portion 40a and the second main surface portion 40b from coming into full surface contact with each other as the liquid agent 18 contained in the containing area 17 decreases. In other words, a state in which a gap is formed between the first principal surface portion 40a and the second principal surface portion 40b can be maintained. Therefore, it is possible to prevent the suction port 70a from being blocked by the first main surface portion 40a and the second main surface portion 40b.
In this embodiment, as shown in FIG. 7, a portion of the second principal surface portion 40b of the first principal surface portion 40a and the second principal surface portion 40b is selectively bonded to the inner film layer 23 at the bonding portion 27. there is That is, the joint portion 27 is selectively formed on the second main surface portion 40b of the first main surface portion 40a and the second main surface portion 40b. In addition, in FIG. 4, the seal boundary line 27a of the inner bag-constituting sheet material 41 is indicated by a chain double-dashed line for the sake of convenience. The seal boundary line 27a is a boundary line between a region where the inner bag-constituting sheet material 41 is joined (sealed) to the main body-constituting sheet material 21 and another region of the inner bag-constituting sheet material 41, and also the container-constituting sheet material 51. is a boundary line between the area where the inner bag-constituting sheet material 41 and the inner film layer 23 are joined when the is formed and the other area of the inner bag-constituting sheet material 41 . 2, 5 and 15, in the container-constituting sheet material 51, the forming region of the joining portion 27 is hatched upward to the left for convenience.
At the joining portion 27, a portion of the second main surface portion 40b and a portion of the inner film layer 23 are joined together. The second main surface portion 40b is not joined to the second planar portion 20b except for the formation region of the joint portion 27 and the formation region of the inner and outer seal portions 43 .
The first main surface portion 40a is not joined to the first planar portion 20a except for the formation area of the inner and outer seal portions 43 .
As a method for forming the joint portion 27, for example, heat sealing, ultrasonic sealing, bonding with an adhesive, or the like can be used.
In addition, it is preferable that the outer film layer 22 and the inner film layer 23 are joined to each other at the joints 27 . By doing so, the rigidity of the joint portion 27 can be ensured satisfactorily. It is possible to suppress deformation toward the side and surface contact with the first main surface portion 40a. Here, if the region where the outer film layer 22 and the inner film layer 23 are joined to each other overlaps at least a portion of the joining portion 27 when viewed in the thickness direction of the inner bag 40, It may be stored inside the formation location of the joint portion 27 or may protrude from the joint portion 27 .
However, in the outer film layer 22, the portion corresponding to the joint portion 27 may be partially subjected to a non-joining treatment, for example. The non-bonding treatment can be easily formed by, for example, applying a non-bonding agent (so-called desizing agent) to the desizing state, similarly to the non-bonding portion 24 .

Further, as shown in FIG. 7, the joint portion 27 is arranged, for example, in the center portion of the trunk portion (second trunk portion 47) in the lateral width direction (hereinafter simply referred to as the lateral width direction). As described above, in the case of the present embodiment, the suction port 70a is arranged at the central portion in the width direction. That is, the joint portion 27 and the suction port 70a are arranged at positions corresponding to each other in the lateral width direction of the second body portion 47 .
As a result, as shown in FIGS. 8 to 14, when the inner bag 40 is crushed, the first main surface portion 40a and the second main surface portion 40b are in surface contact with each other in the vicinity of the suction port 70a. can be suppressed. Therefore, it is possible to more reliably prevent the suction port 70a from being blocked by the first main surface portion 40a and the second main surface portion 40b.

The joint portion 27 is arranged from a position near the lower side of the suction port 70a to a position near the first peripheral joint portion 94 or the second peripheral joint portion 95 in the vertical direction.
As a result, the second main surface portion 40b is joined to the second planar portion 20b from a position near the lower side of the suction port 70a to a position near the second bottom portion 48 . Therefore, as shown in FIGS. 8 and 12, etc., the gap between the second principal surface portion 40b and the first principal surface portion 40a connects the position near the lower side of the suction port 70a and the position near the second bottom portion 48. It becomes the flow path 98 . Therefore, even if the dispenser 70 does not have the extension member (dip tube) described above, the liquid agent 18 stored in the storage area 17 can be sucked into the pump 72 via the channel 98 . Therefore, the liquid medicine 18 contained in the containing area 17 can be easily used up to the end. In addition, since the dispenser 70 can be configured to terminate at a position that is the same as or higher than the middle position between the upper end and the lower end of the second body portion 47, the resin used for manufacturing the sheet material container 100 can be The amount of material can be reduced.
More specifically, the joint portion 27 extends from a position near the lower side of the suction port 70a to a position near the first peripheral joint portion 94 or the second peripheral joint portion 95, whichever is higher in the vertical direction. It is preferably arranged across.
In the case of this embodiment, as an example, the joint portion 27 is arranged from a position near the lower side of the suction port 70 a to a position near the second peripheral edge joint portion 95 . More specifically, the joint portion 27 terminates, for example, near the inner peripheral edge of the second filling portion 62 and above the inner peripheral edge.
Here, the joint portion 27 extends from a position near the lower side of the suction port 70a to a height position of a lower intersection point 101 (see FIG. 6) which is an intersection point between the lower end of the side joint portion 42a and the bottom peripheral joint portion 42b. It is even more preferred that they are arranged all the way through. By doing so, the flow path 98 is formed up to the vicinity of the second bottom portion 48, and further, the first main surface portion 40a and the second main surface portion 40b are in surface contact with each other in the vicinity of the suction port 70a. You can prevent it from happening. Therefore, the liquid agent 18 remaining in the accommodation area 17 can be more reliably sucked up from the vicinity of the second bottom portion 48 to the discharge port 76 by the channel 98 . 5, the height position of the portion corresponding to the lower intersection 101 in the second principal surface forming portion 92 is indicated by a chain double-dashed line 89. As shown in FIG. The joint portion 27 extends up to, for example, the height position of the chain double-dashed line 89 . Further, as shown in FIG. 6, the two-dot chain line 89 indicates the height position of the folding line 83 (the upper edge of the bottom forming portion 93 in the mountain-folded state) in the sheet material container 100 before the filling material is enclosed. height position). In addition, in FIG. 6, the joint portion 27 is indicated by a chain double-dashed line.
However, the present invention is not limited to this example, and the dispenser 70 may have an extension member (dip tube), for example. The lower end of the extension member may form the suction port 70a. In this case, from the viewpoint of reducing the resin material used for manufacturing the sheet material container 100, the lower end of the extension member ends at a position equal to or higher than the middle position between the upper end and the lower end of the second body portion 47. preferably.

Furthermore, in the case of this embodiment, the joint portion 27 extends linearly in the vertical direction.
As a result, a channel 98 extending vertically is formed. Therefore, the liquid agent 18 contained in the containing area 17 can be more easily sucked into the pump 72 via the flow path 98 .
In the example shown in FIG. 2, the height position of the upper end of the joint portion 27 is lower than the height position of the lower end of the cylinder 77, and the upper end of the joint portion 27 and the lower end of the cylinder 77 are separated vertically.
From the viewpoint of suppressing clogging in the vicinity of the suction port 70a, the distance between the upper end of the joint 27 and the lower end of the cylinder 77 is, for example, 5 times or less, 3 times or less, or equal to the inner diameter dimension of the cylinder 77. It is preferable that they are substantially equivalent.
In addition, from the viewpoint of allowing the second main surface portion 40b to be displaced to the vicinity of the suction port 70a (the viewpoint of forming the flow path 98 in the vicinity of the suction port 70a), the upper end of the joint portion 27 and the cylinder The distance from the lower end of 77 is preferably 1/2 or more of the inner diameter of cylinder 77, for example.
The height position of the upper end of the joint portion 27 may be, for example, higher than the height position of the lower end of the cylinder 77, or may be substantially the same as the height position of the lower end of the cylinder 77. good.
In the case of this embodiment, one joint portion 27 is formed continuously from a position near the lower side of the suction port 70 a to a position near the second peripheral edge joint portion 95 . Accordingly, the joint portion 27 is not formed on both sides of the joint portion 27 in the width direction, and the second main surface portion 40b and the inner film layer 23 are not joined to each other. As a result, the non-formation region of the bonding portion 27 on the second main surface portion 40b can be brought close to or in close contact with the first main surface portion 40a, so that the liquid agent 18 is not formed between the liquid non-formation region and the first main surface portion 40a. can be suppressed from remaining.

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.

In this way, as shown in FIG. 6, 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 FIG. 9, 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.
In the sheet material container 100, for example, a filling material is injected into the non-joint portion 24 from an injection port 25a (FIG. 6) formed in the extension portion 25, and then the portion connected to the base end side of the extension portion 25. , the non-joint portion 24 is sealed. As a result, the filler is enclosed in the non-joint portion 24 (filling portion 60).
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).
After the filling material is enclosed in the filling portion 60, for example, the extending portion 25 is cut off.
Thus, the sheet material container 100 (see FIGS. 1 and 2) in which the filling material is enclosed in the filling portion 60 is obtained. However, the extending portion 25 may remain even in the state of the sheet material container 100 in which the filler is enclosed.

After the sheet material container 100 is manufactured, the liquid agent 18 is filled into the storage area 17 through the ejection tube portion 15 a of the spout member 15 , and then the liquid agent 18 is supplied to the storage area 17 by attaching the dispenser 70 to the spout member 15 . An enclosed sheet material container 100 is obtained.

An example of the process of collapsing the inner bag 40 as the liquid agent 18 in the containing area 17 decreases will be described below with reference to FIGS. 7 to 14 . 7 to 14, the cylinder 77 is illustrated with a two-dot chain line.
As shown in FIGS. 7 and 11, the height position of the liquid surface of the liquid agent 18 is higher than the height position of the suction port 70a (the lower end of the cylinder 77). direct contact with them). As described above, when the pump 72 is pressed, the liquid agent 18 is directly sucked into the pump 72 through the suction port 70a and discharged out of the sheet material container 100 through the discharge port 76. be done.
Then, as shown in FIGS. 8 to 10 and 12 to 14, as the amount of the liquid agent 18 contained in the containing area 17 decreases, the first main surface portion 40a and the second main surface portion 40b move toward each other. The inner bag 40 is crushed as it approaches. More specifically, the second main surface portion 40b bends toward the first main surface portion 40a, and the first main surface portion 40a bends toward the second main surface portion 40b.

Here, in the case of the present embodiment, as described above, the second main surface portion 40b is held by the container body 20 via the joint portion 27, while the first main surface portion 40a is formed of the inner and outer seal portions 43. It is non-bonded to the first planar portion 20a except for the region. Therefore, as shown in FIGS. 11 to 14, the amount by which the second main surface portion 40b bends toward the first main surface portion 40a is smaller than the amount by which the first main surface portion 40a bends toward the second main surface portion 40b. Therefore, as an example, as the liquid agent 18 in the storage area 17 decreases, the flow path 98 gradually deforms into a shape that is eccentric toward the first main surface portion 40a with respect to the axial center of the cylinder 77 when viewed from the side. . Further, as shown in FIGS. 9 and 13, for example, when the first main surface portion 40a bends toward the second main surface portion 40b, a portion of the first main surface portion 40a is bent to the outer peripheral surface of the lower end portion of the cylinder 77. In this way, the formation of a gap between the lower end portion of the cylinder 77 and the first main surface portion 40a is suppressed.
Furthermore, since the portion of the second main surface portion 40b above the upper end of the joint portion 27 is not joined to the second planar portion 20b, it is closer to the first main surface portion 40a than the formation region of the joint portion 27. It bends easily. Therefore, as the amount of the liquid agent 18 in the containing area 17 decreases, as shown in FIGS. eccentric shape.
In addition, in the width direction, a portion of the second main surface portion 40b on the right side of the joint portion 27 and a portion of the second main surface portion 40b on the left side of the joint portion 27 are not held by the container body 20. Compared to the joint portion 27 (central portion in the width direction), it is more likely to bend toward the first main surface portion 40a. Therefore, as shown in FIG. 8 and the like, as the amount of the liquid agent 18 in the storage area 17 decreases, the flow path 98 decreases in front-to-rear width toward the left from the central portion in the width direction. It gradually deforms so that the front-rear width shrinks as it goes to the right from the central part of.
In this manner, the second main surface portion 40b is in surface contact with or close to the first main surface portion 40a except for the joint portion 27 and its vicinity.

Here, in the case of the present embodiment, the width dimension of the joint portion 27 is, for example, less than the outer diameter of the cylinder 77, more preferably less than the opening diameter of the lower end of the cylinder 77 (the diameter of the suction port 70a).
By doing so, as shown in FIGS. 10 and 14, when the liquid agent 18 in the storage area 17 is running low (for example, immediately before the liquid agent 18 in the storage area 17 is completely exhausted), the second main It can be expected that the vicinity of the upper end of the joint portion 27 in the surface portion 40 b is in close contact with the outer peripheral surface of the lower end portion of the cylinder 77 . In this case, formation of a gap between the lower end portion of the cylinder 77 and the second main surface portion 40b can be suppressed. A portion of the first main surface portion 40 a is also in close contact with the outer peripheral surface of the lower end portion of the cylinder 77 , so that the upper end of the flow path 98 can be formed near the lower end of the cylinder 77 . Therefore, the liquid agent 18 remaining in the accommodation area 17 can be easily sucked into the pump 72 via the flow path 98 .
In this state, as shown in FIG. 10, at least both ends of the second main surface portion 40b in the width direction are in surface contact with the first main surface portion 40a except for the formation region of the joint portion 27 and its vicinity. Or, it becomes a configuration in which they are close to each other. That is, since the channel 98 is formed with a relatively small diameter at the central portion in the lateral width direction, the liquid agent 18 remaining in the storage area 17 is discharged from the vicinity of the second bottom portion 48 through the channel 98 to the pump 72 . can be better sucked up to the inside of the Similarly, as shown in FIG. 14, at least the central portion of the second main surface portion 40b in the vertical direction is in surface contact with or close to the first main surface portion 40a, except for the area where the joint portion 27 is formed and its vicinity. configuration. That is, since the channel 98 is formed with a relatively small diameter in the central portion in the vertical direction, the liquid agent 18 remaining in the storage area 17 is pumped from the vicinity of the second bottom portion 48 through the channel 98 . Better wicking to the interior of 72 is possible.

Although the width dimension (dimension in the lateral width direction) of the joint portion 27 is not particularly limited, it is preferably, for example, 0.5 mm or more and 30 mm or less, and more preferably 2 mm or more and 5 mm or less.
The dimension of the joint portion 27 in the vertical direction is not particularly limited, but for example, from the viewpoint of preventing the suction port 70a from being blocked by the first main surface portion 40a and the second main surface portion 40b, it is 10 mm or more. is preferably 20 mm or more. From the viewpoint of preventing the liquid agent 18 from entering the housing area 17, the vertical dimension of the joint 27 is preferably 100 mm or less, and more preferably 10 mm or less. However, the dimension of the joint portion 27 in the vertical direction is not limited to the dimension illustrated above, and can be appropriately determined according to the height dimension of the sheet material container 100 .

In addition, for example, it is also preferable that the width dimension of the joint portion 27 is larger than the outer diameter of the cylinder 77 . By doing so, the second main surface portion 40b is held more firmly by the second planar portion 20b. Therefore, for example, when the remaining amount of the liquid agent 18 in the storage area 17 is low, the second main surface portion 40b does not substantially bend and maintains its original shape, while the first main surface portion 40a is a cylinder. It can be expected to bend so as to be in close contact with the outer peripheral surface of the lower end portion of 77 . As a result, the upper end of the channel 98 can be formed in the vicinity of the lower end of the cylinder 77, so that the liquid agent 18 remaining in the containing area 17 can be easily sucked into the pump 72 via the channel 98. can be done. Furthermore, since the channel 98 is formed to have a wider width, it is possible to prevent a part of the channel 98 from being blocked during the process of the inner bag 40 being crushed.

[Second embodiment]
Next, a second embodiment will be described with reference to FIG. 15 . In addition, in FIG. 15, the forming area of the joint portion 27 is indicated by left-up hatching.
The sheet material container according to the present embodiment differs from the sheet material container 100 according to the first embodiment in the following points, and the sheet material container according to the first embodiment is different in other points. It is configured similarly to the container 100 .

In the first embodiment, an example in which the suction port 70a is continuously formed from the position near the lower side of the suction port 70a to the position near the second peripheral edge joint portion 95 is described. Thus, the joint portion 27 is intermittently formed from a position near the lower side of the suction port 70 a to a position near the second peripheral edge joint portion 95 . The shape of the joining portion 27 may be dot-like, or may be partially discontinuous. Moreover, the number of joint portions 27 is not limited to the example in which one is formed in the vertical direction, and a plurality of joint portions 27 may be formed.
Even with such a configuration, a part of the portion of the inner bag-constituting sheet material 41 that defines the containing area 17 is held by the container body 20, so that the liquid agent 18 contained in the containing area 17 is held. With the decrease, it is possible to prevent the inner bag 40 from being completely crushed at an early stage in the vicinity of the suction port 70a. Therefore, since the state in which the flow path 98 leading to the suction port 70a is secured inside the housing area 17 can be maintained until the end of the period of using the sheet material container 100, a dip tube (extension member) (not shown) can be omitted or Even if it is shortened, the liquid agent 18 can be preferably used up to the end.

The present invention is not limited to the above-described embodiments, and includes various modifications and improvements as long as the object of the present invention is achieved.

For example, in the above description, an example in which the dispenser 70 is a hand pump has been described, but the present invention is not limited to this example, and the dispenser 70 may be a dispenser that does not replace air. By doing so, it is possible to achieve a configuration in which the inner bag 40 is favorably crushed each time a discharge operation is performed, so that the flow path 98 can be formed more reliably. In this case, the dispenser 70 has, for example, a one-way valve (not shown) that prevents outside air from flowing into the inner bag 40 via the dispenser 70 .
Examples of such dispensers 70 include electric dispensers, trigger sprayers, and pump foamers.

Further, for example, in the above description, an example in which one of the first principal surface portion 40a and the second principal surface portion 40b is selectively bonded to the inner film layer 23 at the bonding portion 27 has been described. However, in the present invention, for example, both the first principal surface portion 40a and the second principal surface portion 40b may be bonded to the inner film layer 23. In this case, it is preferable that the joint portion 27 between the first main surface portion 40a and the inner film layer 23 and the joint portion 27 between the second main surface portion 40b and the inner film layer 23 are arranged asymmetrically with each other.
Here, being asymmetrically arranged means being arranged at mutually different positions in the width direction, being arranged at mutually different positions in the vertical direction, or being arranged at mutually different positions in the width direction. and that they are arranged at different positions in the vertical direction.
By doing so, it is possible to prevent the first main surface portion 40a and the second main surface portion 40b from coming into surface-to-surface contact with each other over the entire surface, thereby preventing the suction port 70a from being blocked.

Further, the various constituent elements of the sheet material container 100 do not need to exist independently of each other. that one component is part of another component, part of one component overlaps part of another component, and so on.

11 Body portion 13 Bottom portion 14 Top portion 15 Spout member 17 Storage area 18 Liquid agent 20 Container main body 21 Main body constituent sheet material 22 Outer film layer 23 Inner film layer 24 Non-bonded portion 26 Main body sealing portion 27 Joint portion 40 Inner bag 41 Inner bag structure Sheet material 47 Second trunk (body)
48 second bottom (bottom)
51 Container-constituting sheet material 60 Filling part 70 Dispenser 70a Suction port 76 Discharge port 91 First main surface forming part 92 Second main surface forming part 93 Bottom forming part 94 First peripheral joint part 94a Half part 95 Second peripheral joint part 95a half 98 channel 100 sheet material container

Claims (9)

an inner bag made of an inner bag-constituting sheet material and defining a storage area for storing a liquid agent;
a container body that is made of a body-constituting sheet material and surrounds the inner bag;
a dispenser;
A sheet material container comprising:
The body-constituting sheet material has an outer film layer and an inner film layer laminated to each other,
The body-constituting sheet material includes a body seal portion where the outer film layer and the inner film layer are joined, a non-joined portion where the outer film layer and the inner film layer are partially unjoined, and a filling portion in which a filler is enclosed between the outer film layer and the inner film layer in the non-bonded portion,
The dispenser has a suction port disposed within the housing area and a discharge port disposed outside the housing region, and sucks the liquid agent in the housing region from the suction port during discharge. and is configured to be discharged from the discharge port to the outside of the sheet material container,
A sheet material container having, at a position below the suction port, a joint portion in which a portion of the inner bag-constituting sheet material defining the accommodation area and the inner film layer are joined to each other. The inner bag has a body,
The body portion has a first main surface portion and a second main surface portion facing the first main surface portion with the accommodation area interposed therebetween,
2. The sheet material container of claim 1, wherein one of said first major surface and said second major surface is selectively joined to said inner film layer at said junction. The inner bag has a body,
The sheet material container according to claim 1 or 2, wherein the joint portion is arranged at a central portion in the lateral width direction of the body portion. The inner bag has a body and a bottom,
The body portion has a first main surface portion and a second main surface portion facing the first main surface portion with the accommodation area interposed therebetween,
The inner bag-constituting sheet material includes a first principal surface constituting portion that constitutes the first principal surface portion, a second principal surface constituting portion that constitutes the first principal surface portion, a bottom portion constituting portion that constitutes the bottom portion, has
A peripheral edge portion of the half of the bottom portion constituting portion on the side of the first main surface constituting portion is joined to a peripheral edge portion of the first main surface constituting portion to form a first peripheral joint portion,
A peripheral edge portion of the half of the bottom portion constituting portion on the side of the second main surface constituting portion is joined to a peripheral edge portion of the second main surface constituting portion to form a second peripheral joint portion,
4. The joint portion according to any one of claims 1 to 3, wherein the joint portion is arranged from a position near the lower side of the suction port to a position near the first peripheral joint portion or the second peripheral joint portion in the vertical direction. A sheet material container according to any one of the preceding claims. 5. The sheet material container according to any one of claims 1 to 4, wherein the joint portion extends linearly vertically. The inner bag has a body,
6. The sheet material container according to any one of claims 1 to 5, wherein the height position of the suction port is the same as or higher than the intermediate position between the upper end and the lower end of the body portion. The dispenser has a cylinder,
7. The sheet material container according to any one of claims 1 to 6, wherein the lower end of the cylinder is the lower end of the dispenser and constitutes the suction port. 8. The sheet material container according to any one of claims 1 to 7, wherein the outer film layer and the inner film layer are joined to each other at the joint formation location. A container of sheet material according to any one of the preceding claims, wherein the dispenser is a non-air displacement dispenser.

Images