JP2023005523A - Sheet material container - Google Patents

Abstract

To provide a sheet material container that can protect a container body with a protection sheet and allows the protection sheet to be easily removed from the container body after the content is used up.SOLUTION: A sheet material container 100 comprises a storage region 17, a container body 20, and a protection sheet 80 covering an exterior surface of the container body 20. A sheet material 21 has a body seal part 26 in which an outer film layer 22 is joined to an inner film layer 23, an unjoined part 24, and a filling part 60. The container body 20 has a first face, and a second face that is adjacent and orthogonal to the first face. The filling part 60 has a face-to-face connection filling part 66 disposed across the first face and the second face. The protection sheet 80 continuously covers the first face and the second face. An intersection point 102 of a boundary 101 between the first face and the second face and an outer outline 66a in the face-to-face connection filling part 66 is exposed from the protection sheet 80.SELECTED DRAWING: Figure 9

Description

The present invention relates to sheet material containers.

A sheet material container constructed with one or a plurality of sheet materials including a body-constituting sheet material is described, for example, in US Pat. The sheet material container of Patent Literature 1 includes a container body surrounding a containing area, the container body having a body, a bottom gusset, and a pair of skirts respectively covering opposite sides of the bottom gusset. have.

Japanese Patent No. 6193535

By the way, the container body formed using one or a plurality of sheet materials including the sheet material constituting the main body is affected by external stimulation (for example, friction or stab), vibration and bending (bending of the container body). There was a problem that it was easy to receive

The present invention has been made in view of the above problems, and relates to a sheet material container that can protect the container body with a protective sheet and that can be easily peeled off from the container body after the contents have been used up. .

The present invention is a sheet material container constructed with one or more sheet materials including a body forming sheet material having an outer film layer and an inner film layer laminated to each other, the container containing a content. An accommodation area, a container body configured by the body-constituting sheet material, and comprising a container body surrounding the accommodation area, and a protective sheet covering the outer surface of the container body, wherein the body-constituting sheet material is a body seal portion where the outer film layer and the inner film layer are bonded; and a non-bonded portion where the outer film layer and the inner film layer are partially unbonded; It has a filling part capable of enclosing a filler between the outer film layer and the inner film layer in the part, and the container body is adjacent to the first surface and the first surface and the and a second surface that intersects the first surface, and the filling portion has an inter-surface connection filling portion that is arranged across the first surface and the second surface. and the protective sheet continuously covers the first surface and the second surface, and defines a boundary line between the first surface and the second surface and an outer contour of the inter-surface connection filling portion. The intersections of the lines relate to the sheet material container exposed from said protective sheet.

According to the present invention, the protective sheet can protect the container body, and the protective sheet can be easily separated from the container body after the contents have been used up.

FIG. 4 is a front view of the sheet material container after enclosing the filler according to the first embodiment; FIG. 4 is a side view of the sheet material container after enclosing the filler according to the first embodiment; It is a bottom view of the sheet material container after enclosing the filler according to the first embodiment. FIG. 2 is a cross-sectional view taken along line AA shown in FIG. 1; FIG. 5 is a cross-sectional view taken along line AA shown in FIG. 4; 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, a main body-constituting sheet material, and a protective sheet in the first embodiment; FIG. FIG. 4 is a plan view showing mutually laminated inner bag-constituting sheet materials and body-constituting sheet materials in the first embodiment. 4 is a plan view of a protective sheet in the first embodiment; FIG. FIG. 10 is a partially enlarged view of a portion A shown in FIG. 9; Fig. 2 is a plan view showing the sheet material container before enclosing the filler according to the first embodiment; FIG. 11 is a front view of the sheet material container after enclosing the filler according to the second embodiment; FIG. 10 is a front view of the container body after enclosing the filler in the second embodiment; FIG. 10 is a perspective view of the container body after enclosing the filler in the second embodiment; FIG. 10 is a plan view of a protective sheet 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 11. FIG.
As shown in FIGS. 1 to 5, the sheet material container 100 according to the present embodiment is a sheet material container configured with one or a plurality of sheet materials including a main body constituting sheet material 21, and contains contents. 18, a container body 20 which is composed of a body-constituting sheet material 21 and surrounds the containing region 17, and a protective sheet 80 which covers the outer surface of the container body 20. there is
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 34 where the outer film layer 22 and the inner film layer 23 are partially unjoined. and a filling portion 60 capable of enclosing a filler between the outer film layer 22 and the inner film layer 23 in the non-bonded portion 24 .
The container body 20 has a first surface and a second surface adjacent to and intersecting the first surface.
The filling section 60 has a surface-to-surface connection filling section 66 arranged across the first surface and the second surface.
The protective sheet 80 continuously covers the first surface and the second surface, and the boundary line 101 between the first surface and the second surface and the outer outline 66 a of the inter-surface connection filling portion 66 . A crossing point 102 is exposed from the protective sheet 80 .
Here, the "outer outline" means an outline farther from the center in one plane (inside the plane of the first plane or within the plane of the second plane).

In the case of the present embodiment, the sheet material container 100 has a three-dimensional shape having a first surface and a second surface that intersect each other (see FIGS. 1 and 2, etc.). Transform into As shown in FIGS. 1 to 3 and the like, the filling portion 60 containing the filling material expands outward.
Here, the inventors have found that the protective sheet 80 tends to bite into the inter-surface connection filling portion 66 that is arranged across the first surface and the second surface. Then, the inventor arranged the protective sheet 80 so as to avoid the intersection 102 between the boundary line 101 between the first surface and the second surface and the outer outline 66a of the inter-surface connection filling portion 66. , the inventors have found that the protective sheet 80 can be prevented from being torn, and have arrived at the present invention.

According to this embodiment, the sheet material container 100 includes the protective sheet 80 that is made of a film and covers the outer surface of the container body 20 , so that the container body 20 is reinforced by the protective sheet 80 . there is Thereby, good structural strength of the sheet material container 100 can be achieved.
In addition, the protective sheet 80 continuously covers the first surface and the second surface, and includes the boundary line between the first surface and the second surface, the outer outline 66a of the inter-surface connection filling portion 66, are exposed from the protective sheet 80. As a result, while the container body 20 is satisfactorily covered with the protective sheet 80 , it is possible to prevent the protective sheet 80 from biting into the face-to-face connection filling portion 66 at or near the intersection 102 . Therefore, when peeling the protective sheet 80 from the container body 20 , it is possible to prevent the protective sheet 80 from being caught or left unteared in the vicinity of the intersection point 102 .
Thus, according to the present embodiment, the protective sheet 80 can protect the container body 20, and the protective sheet 80 can be easily separated from the container body 20 after the contents 18 have been used up.

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) or solid (for example, granular (including granular) or powder). good.
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.

In the case of this embodiment, the container body 20 includes a body portion 11, a top gusset 14 arranged on the upper side of the body portion 11, a bottom gusset 12 arranged on the lower side of the body portion 11, and a bottom gusset 12. It is formed in a bag-like shape having a pair of skirt portions 16 respectively covering both sides of the body. However, the present invention is not limited to this example, and the container body 20 may not have the top gusset 14 or the bottom gusset 12 .
The container body 20 surrounds the receiving area 17 . In this embodiment, the container body 20 surrounds the inner bag 40 . That is, in the case of this embodiment, the sheet material container 100 includes the inner bag 40 arranged inside the container body 20 , and the inner bag 40 has the accommodation area 17 . The inner bag 40 is composed of an inner bag-constituting sheet material 41 which is the innermost sheet material among one or more sheet materials.
The container body 20 constitutes the outer shell of the sheet material container 100 . Below, the trunk portion 11 , top gusset 14 and bottom gusset 12 of the container body 20 may be referred to as the trunk portion 11 , top gusset 14 and bottom gusset 12 of the sheet material container 100 . As shown in FIGS. 1 and 2, the sheet material container 100 can stand on its own with the bottom gusset 12 and the pair of skirts 16 placed on a horizontal placement surface. However, for example, the pair of skirt portions 16 may float from the mounting 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 (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.

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. 4, the body 11 has a first main surface 20a (front panel) and a second main surface 20b (rear panel) facing each other with the housing area 17 therebetween. 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 addition, the first main surface portion 20a and the second main surface portion 20b are formed symmetrically in the front-rear direction, except for a connection portion 65 of the filling portion 60, which will be described later, for example.
The first main surface portion 20a protrudes forward and the second main surface portion 20b protrudes rearward. Of course, the first main surface portion 20a and the second main surface portion 20b may be substantially flat without swelling.
The left edge portion of the first main surface portion 20a and the left edge portion of the second main surface portion 20b are connected to each other, and the right edge portion of the first main surface portion 20a and the right edge portion of the second main surface portion 20b are connected to each other. are connected to each other.
Top gusset 14 connects the upper edge of first main surface portion 20a and the upper edge of second main surface portion 20b to each other. The top gusset 14 is provided with a discharge port for discharging the contents 18 from the storage area 17 .
The bottom gusset 12 connects the lower edge of the first main surface portion 20a and the lower edge of the second main surface portion 20b. The bottom gusset 12 has a bottom portion 13a facing the mounting surface, and a pair of rising portions 13b rising upward from both sides of the bottom portion 13a. Each of the pair of rising portions 13 b is covered with a pair of skirt portions 16 . More specifically, the right end of the bottom gusset 12 rises upward and constitutes one of the pair of raised portions 13b. Similarly, the left end of the bottom gusset 12 rises upward and constitutes the other of the pair of rising portions 13b. The central portion of the bottom gusset 12 in the left-right direction can be placed on a horizontal placement surface, and constitutes a bottom portion 13a.

The planar shape of the top gusset 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 gusset 14 is formed, for example, in a laterally long tonsil shape.

The container body 20 includes a top gusset peripheral seal piece 45 arranged along the periphery of the top gusset 14, and a top gusset peripheral seal piece 45 extending vertically along the left and right edge portions of the body portion 11, respectively. and a pair of side seal pieces 46 including the joint portion between the second main surface portion 20b and the peripheral edge portion of the second main surface portion 20b. The top gusset peripheral edge seal piece 45 and the side seal piece 46 stand up toward the outside of the container body 20, for example. The dimensions of the top gusset peripheral seal piece 45 and the side seal piece 46 in the direction orthogonal to the extending direction of the top gusset peripheral seal piece 45 and the side seal piece 46 (the top gusset peripheral seal piece 45 and the side seal piece 46 ) is, for example, substantially constant.
The top gusset peripheral seal piece 45 surrounds the top gusset 14 in a circular fashion, except for, for example, a portion where a connecting portion 65 described later exists.
The top gusset periphery seal piece 45 and the side seal piece 46 have a body seal portion 26 that joins the outer film layer 22 and the inner film layer 23 .

In the case of this embodiment, the container body 20 has, as a pair of rising portions 13b, the rising portion 13b arranged on the right side and the rising portion 13b arranged on the left side.
Similarly, the container body 20 has, as a pair of skirt portions 16, the skirt portion 16 arranged on the right side and the skirt portion 16 arranged on the left side. The right rising portion 13 b is covered with the right skirt portion 16 , and the left rising portion 13 b is covered with the left skirt portion 16 .
More specifically, as shown in FIG. 2, a front lower sheet piece 47a and a rear lower sheet piece 47b are provided on the right side edge of the container body 20 below the side seal piece 46. are placed. The front lower sheet piece 47a and the rear lower sheet piece 47b are partially joined to each other to form the skirt portion seal piece 48, thereby forming the continuous skirt portion 16 in the container body 20. there is That is, the skirt portion 16 is located below the side seal piece 46 on the right side edge of the container body 20 .
Similarly, a front lower sheet piece 47a and a rear lower sheet piece 47b are arranged at a portion below the side sealing piece 46 on the left side edge of the container body 20. As shown in FIG. The side edges of the front lower sheet piece 47a and the side edges of the rear lower sheet piece 47b are partially joined to each other to form the skirt sealing piece 48, thereby forming a continuous skirt in the container body 20. A part 16 is configured. That is, the skirt portion 16 is located below the side seal piece 46 on the left side edge of the container body 20 .
As shown in FIG. 2, in a side view, each of the pair of skirt portions 16 is formed, for example, in a substantially isosceles triangle shape, and the apex angle of the isosceles triangle is arranged on the upper side.
The outer surface of the right rising portion 13b faces the right side and faces the inner surface of the right skirt portion 16. As shown in FIG. Similarly, the outer surface of the left rising portion 13b faces leftward and faces the inner surface of the left skirt portion 16. As shown in FIG.

The container body 20 is formed by bending a main body-constituting sheet material 21 (see FIGS. 6 and 7) and joining parts of the peripheral edge of the main body-constituting sheet material 21 to each other (in the case of the present embodiment, the inner bag 40 is formed). The inner bag forming sheet material 41 is interposed between them.

In the case of the present embodiment, the inner bag 40 is constructed by joining together portions of the inner bag-constituting sheet material 41 (see FIG. 7) at the peripheral edges (see FIG. 7). 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 is covered with the container body 20 . The inner bag 40 has a housing area 17 inside the inner bag 40 .
However, in the present invention, when the inner container that defines the accommodation area 17 is arranged inside the container body 20, the inner container is not limited to the inner bag 40 made of a sheet material. It may be configured by

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 .
As shown in FIG. 4, the inner bag 40 has a first main surface portion 40a located on the front side and a second main surface portion 40b located on the back side with the accommodation area 17 interposed therebetween.

The sheet material container 100 includes, for example, a spout 15 provided on the top gusset 14 (top portion) and a cap portion 70 attached (for example, detachably attached) to the spout 15 . The spout 15 is provided through the top gusset 14. - 特許庁
More specifically, as shown in FIG. 1, for example, the spout 15 includes a tubular portion 15a having a spout 15c, a flange portion 15b projecting outward from the proximal end of the tubular portion 15a, have The cylindrical portion 15a is formed in a cylindrical shape. A screw thread is formed on the outer peripheral surface of the cylindrical portion 15a, and the cylindrical portion 15a has a male thread shape. The cylindrical portion 15 a vertically penetrates the top gusset 14 and protrudes upward from the top gusset 14 . The flange portion 15b is provided at one end (lower end) of the tubular portion 15a in the axial direction so as to be orthogonal to the axial direction.
The flange portion 15b is provided, for example, on the inner surface or the outer surface of a portion of the inner bag-constituting sheet material 41 that is arranged along the top gusset 14 of the body portion 11 . The lower surface of the flange portion 15b is joined to the inner surface of the inner bag-constituting sheet material 41 at the top gusset 14, for example. However, the present invention is not limited to this example, and the flange portion 15b may be directly joined to the inner film layer 23 of the sheet material 21 constituting the main body.
An opening at the tip of the cylindrical portion 15a is a spout 15c for discharging the content 18 from the storage area 17. As shown in FIG.

The cap portion 70 includes, for example, a mounting portion 71 which is a female-threaded cylindrical portion detachably screwed to the cylindrical portion 15a, a pump portion 72 fixed to the mounting portion 71, and a pump 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 .
The head portion 73 has, for example, a support cylinder portion 74 projecting upward from the pump portion 72 and a nozzle portion 75 horizontally projecting from the upper end portion of the head portion 73. is formed with a discharge port 76 for discharging the content 18 .
A flow path (not shown) for the content 18 in the cap portion 70 is arranged to vertically penetrate the spout 15 .
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 .

In this embodiment, the fill section 60 has a bottom fill section 63 located in the bottom gusset 12 .
More specifically, as shown in FIGS. 1 to 3, the filling portion 60 includes, for example, a first main surface side filling portion 61 formed in a circular shape along the peripheral edge of the first main surface portion 20a, A second main surface side filling portion 62 formed in a circular shape along the peripheral edge portion of the second main surface portion 20b, a bottom portion filling portion 63 formed in a circular shape along the peripheral portion of the bottom gusset 12, and a top filling portion 64 which is formed in a circular shape around the tubular portion 15a in the top gusset 14 .
The lower edge of the first main surface side filling portion 61 is connected to the front edge of the bottom filling portion 63, the lower edge of the second main surface side filling portion 62 is connected to the rear edge of the bottom filling portion 63, and the first main surface side filling portion 61 is connected to the rear edge of the bottom filling portion 63. The center portion of the upper end portion of the main surface side filling portion 61 in the width direction is connected to the center portion of the front end portion of the top portion 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. The first main surface side filling portion 61 and the top filling portion 64 communicate with each other via a connection portion 65 .
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.

More specifically, the first main surface side filling portion 61 includes, for example, a vertically extending portion 61 a extending vertically along the right edge of the trunk portion 11 and a left edge portion of the trunk portion 11 . an upper horizontally extending portion 61c connecting the upper end of the vertically extending portion 61a and the upper end of the vertically extending portion 61b to each other; and a lower horizontally extending portion 61d connecting the lower end of the portion 61a and the lower end of the vertically extending portion 61b.
As shown in FIG. 4, the vertically extending portions 61a and 61b extend vertically at the corners of the cross section of the trunk portion 11. As shown in FIG.
The upper horizontally extending portion 61c is arranged at the upper end portion of the first main surface portion 20a and extends in a direction having a horizontal component. More specifically, for example, the upper horizontally extending portion 61c extends upward in a convex arc shape.
The lower horizontally extending portion 61d is arranged at the lower end portion of the first main surface portion 20a, and extends substantially horizontally left and right, for example.
In this manner, the filling portion 60 includes an upper horizontally extending portion 61c extending horizontally in the upper portion of the body portion 11 and a lower horizontally extending portion 61d extending horizontally in the lower portion of the body portion 11. ,including.
The second main surface side filling portion 62 is formed symmetrically with the first main surface side filling portion 61, for example.
In addition, the bottom filling portion 63 includes, for example, a front-rear extension portion 63 a that extends front-rear along the right edge of the body portion 11 and a front-rear extension portion 63 a that extends front-rear along the left edge of the body portion 11 . a front horizontally extending portion 63c connecting the front end of the front-rear extending portion 63a and the front end of the front-rear extending portion 63b; and a rear horizontally extending portion 63d connecting the rear ends of the extending portions 63b.
As shown in FIG. 5, the front-rear extending portion 63a protrudes toward the skirt portion 16 on the left side. Further, the front-rear extending portion 63b bulges out toward the skirt portion 16 on the right side.
In the present embodiment, the right edge of the front-rear extending portion 63a forms part of the right rising portion 13b, and the left edge of the front-rear extending portion 63b forms part of the left rising portion 13b. are doing.

As shown in FIGS. 1 and 2, in the case of the present embodiment, the protective sheet 80 covers the portion from the trunk portion 11 to the bottom gusset 12. As shown in FIGS. However, in the case of this embodiment, the pair of skirt portions 16 are exposed to the outside from the protective sheet 80 .
The protective sheet 80 may also cover the top gusset 14, for example.
The first trunk covering portion 81a covers, for example, substantially the entirety of the first main surface portion 20a and the first main surface portion side filling portion 61 . The second trunk covering portion 81b covers substantially the entirety of the second main surface portion 20b and the second main surface portion side filling portion 62, for example.
Further, the bottom gusset covering portion 84 covers substantially the entirety of the bottom gusset 12 and the bottom filling portion 63, for example. More specifically, the third portion 87 covers the bottom side of the bottom filling portion 63 . The first portion 85 covers the right end (right rising portion 13b) of the bottom gusset 12 and the right side of the front-rear extension portion 63a, and the second portion 86 covers the left end of the bottom gusset 12. (the left rising portion 13b) and the left side of the front-rear extending portion 63b.
Thus, in the case of this embodiment, since the filling section 60 is covered with the protective sheet 80 , the protective sheet 80 can protect the filling section 60 . In particular, the bottom filling portion 63 is formed in the bottom gusset 12 that is placed on the mounting surface, and is a portion that is susceptible to external stimulation (for example, friction or stab) and vibration. The portion 63 is protected by a bottom gusset covering portion 84 .

As shown in FIGS. 4 and 6, the main body-constituting sheet material 21 includes an outer film layer 22 forming the outer surface side of the container main body 20 and an inner film layer 23 forming the inner surface side of the container main body 20 mutually. 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 .
The outer film layer 22 and the inner film layer 23 are formed with insertion holes through which the tubular portion 15a of the spout 15 is inserted.

A non-bonded portion 24 (FIG. 7) is formed in the body-constituting sheet material 21 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. By enclosing the filler in the non-bonded portion 24, a filling portion 60 in which the filler is enclosed is formed.
The filler can be fluid (gas or liquid), solid (eg, powder, resin pellets, etc.) or semi-solid (eg, foamed material, etc.), preferably gas such as air.
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. 6, in each of the outer film layer 22 and the inner film layer 23, the regions that are joined together to form the main seal portion 26 (FIG. 7) are hatched upward to the right for the sake of convenience.
7 and 8, 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. 7, 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.

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 .

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 .

In this embodiment, the protective sheet 80 is a laminate of a paper layer and a resin layer.
More specifically, the resin layer of the protective sheet 80 includes, for example, at least a layer made of a resin material of a different type (classified into another type) from the resin material composing the main body-constituting sheet material 21 . In addition, when there are a plurality of types of resin materials forming the body-constituting sheet material 21, at least a layer made of a resin material different from any of the plurality of types of resin materials is included.
The paper layer of the protective sheet 80 is, for example, a paper layer (paper film layer) made of a paper material, and has the properties of the paper material (printability, light shielding properties, etc.). Therefore, it is possible to give the protective sheet 80 properties of a paper material different from the properties of the sheet material 21 constituting the main body. The surface of this paper layer may be coated with varnish, cellulose nanofiber (CNF), or the like.

Examples of paper materials constituting the paper layer of the protective sheet 80 include kraft paper, fine paper, imitation paper, glassine paper, parchment paper, synthetic paper, white paperboard, manila ball, milk carton base paper, cup base paper, ivory paper, and the like. is mentioned. And as the raw material, wood such as softwood-derived pulp such as softwood bleached kraft pulp (NBKP) or softwood unbleached kraft pulp (NUKP) and hardwood-derived pulp such as broadleaf bleached kraft pulp (LBKP). Examples include pulp, non-wood pulp such as cotton pulp and hemp pulp, and regenerated cellulose fibers such as cupra and rayon.

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.
Moreover, the layer structure of the inner bag-constituting sheet material 41 is not limited to the above example. Moreover, the layer structure of the protective sheet 80 is not limited to the above example, and the material of each layer constituting the protective sheet 80 is not limited to the above example.

As shown in FIG. 7, the inner bag-constituting sheet material 41 is laminated on the main body-constituting sheet material 21, and as shown in FIG. In addition, the periphery of the outer film layer 22 and the periphery of the inner film layer 23 are joined to each other. Furthermore, a protective sheet 80 is laminated on the body-constituting sheet material 21, and the outer film layer 22 and the protective sheet 80 are joined to each other so as to be easily peelable. Thus, the container-constituting sheet material 51 is composed of the main body-constituting sheet material 21 , the inner bag-constituting sheet material 41 and the protective sheet 80 .
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. It includes a seal portion (hereinafter referred to as body seal portion 28) with the peripheral portion and a portion of a seal portion (hereinafter referred to as easy peel seal portion 27) between outer film layer 22 and protective sheet 80. A top gusset peripheral edge seal piece 45 is formed in a part of the region where the main body seal portion 28 is formed, and a side seal piece 46 is formed in the other part.
As described above, the sheet material container 100 has the peripheral edge seal portion 52 in which the peripheral edge portions of one or more sheet materials are joined to each other. It includes side seal strips 46 extending therealong.
In FIG. 8, the region where the peripheral seal portion 52 is formed is hatched upward to the left. In addition, in FIG. 8 , 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. Moreover, in FIG. 8, the protective sheet 80 is indicated by a two-dot chain line.
As a method for forming the main body seal portion 28 and the inner/outer seal portion 43, heat sealing, ultrasonic sealing, bonding with an adhesive, or the like can be used, for example.

The easily peelable seal portion 27 has bonding performance capable of bonding the protective sheet 80 and the outer film layer 22 (bonding performance capable of functioning together as a sheet material), and is physically or chemically bonded. The protective sheet 80 is made of a material having an easy peelability that allows the protective sheet 80 to be peeled off from the outer film layer 22 by a suitable treatment.
The timing at which the easily peelable seal portion 27 is formed is not particularly limited, and may be, for example, before the main body seal portion 26 is formed or after the main body seal portion 26 is formed. Moreover, the timing at which the easily peelable seal portion 27 is formed may be after or before the main body constituting sheet material 21 is laminated on the inner bag constituting sheet material 41 .
In FIGS. 9 and 11 , in the protective sheet 80 , the region where the easy peel seal portion 27 is formed is hatched upward to the right for the sake of convenience. In addition, in FIG. 9, the peripheral seal portion 52 and the main body seal portion 26 are indicated by two-dot chain lines. In FIG. 7, a seal boundary line 80a, which is a boundary line between the seal area of the peripheral edge portion of the protective sheet 80 and the other area, is indicated by a chain double-dashed line. In the case of this embodiment, the outer film layer 22 and the protective sheet 80 are joined to each other in the area outside the sealing boundary line 80a of the protective sheet 80 during bag making.

Here, the "easy peelability" of the easily peelable seal portion 27 means that the protective sheet 80 is peeled off from the outer film by physical or chemical treatment (loading of physical force, contact with water, organic solvent, etc., heating, etc.). It is not limited as long as it has a property that allows it to be peeled off from the layer 22 . It is more preferable that the easily peelable seal portion 27 can be peeled off by physical or chemical treatment so that the protective sheet 80 does not substantially remain on the outer film layer 22 . These configurations include, for example, a configuration in which the bonding strength of the easily peelable seal portion 27 to the protective sheet 80 is higher than that of the bonding side to the outer film layer 22, and and the bonding strength on the bonding side with the outer film layer 22 are stronger than the breaking strength of the easily peelable seal portion 27 itself. Other examples include a layer made of a water-soluble resin, an easy-open resin, or the like, the adhesive strength of which can be reduced or eliminated by treatment with water, hot water, or heat. Examples of water-soluble resins include water-soluble polyester resins, water-soluble polyamide resins, water-soluble polyimide resins, water-soluble acrylic resins, water-soluble polyurethane resins, water-soluble polyallylamine resins, water-soluble phenolic resins, and water-soluble epoxy resins. Examples include resins, water-soluble phenoxy resins, water-soluble urea resins, water-soluble melamine resins, polyvinyl alcohol resins, and modified products of these resins. And these can be used 1 type or in combination of 2 or more types. In particular, the water-soluble resin is preferably polyvinyl alcohol (PVA) and/or water-soluble ethylene-vinyl alcohol copolymer (EVOH). In addition, between the outer film layer 22 made of a single type of polyethylene resin and the protective sheet 80, the easily peelable seal portion 27 made of a water-soluble resin or an easy-open resin is peeled and adhered to the outer film layer 22. A configuration in which the force is 4 N/20 mm or less is also exemplified. However, the peeling direction here is, as an example, a direction perpendicular to the bending line 94 in FIG.
Examples of the easy-open resin are not particularly limited, but from the viewpoints of seal stability and cost efficiency, for example, cohesion-peel type resins are preferable.

Further, the easily peelable seal portion 27 may be configured such that both surfaces of a base material layer made of paper, nonwoven fabric, resin (such as polyester resin) or the like are coated with an adhesive. This coating may be a full surface coating or a pattern coating. In the case of such a configuration, the protective sheet 80 and the outer film layer 22 are bonded to both sides of the base material layer coated with the adhesive. As the adhesive, the above-described water-soluble resin and the like can be used.

By configuring the easily peelable seal portion 27 in this manner, the protective sheet 80 can be easily peeled off and separated from the container body 20 . By horizontally recycling the container body 20, a high-quality recycled material can be obtained. More specifically, the container body 20 can be manufactured by manufacturing a plurality of sheet materials again using a recycled resin manufactured using a plurality of sheet materials from which the protective sheet 80 has been peeled off. In addition, the protective cover 80 can be manufactured again by using recycled resin manufactured using the protective cover 80 separated from a plurality of sheet materials.

As shown in FIG. 6, the body-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 32 that constitutes the second main surface portion 20b. , a bottom gusset-constituting sheet portion 38 that constitutes the bottom gusset 12 , a top gusset-constituting sheet portion 39 that constitutes the top gusset 14 , and a tubular extension portion 25 . The extending portion 25 extends outward from the second seat portion 32, for example.
The top gusset-constituting sheet portion 39 is formed with an insertion hole 21a through which the tubular portion 15a of the spout 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 .
A portion of the non-joint portion 24 that becomes the top filling portion 64 is formed in a circular shape surrounding the insertion hole 21a.

In addition, the half portion of the right edge of the bottom gusset-constituting sheet portion 38 on the side of the first sheet portion 31 and the lower end portion of the right edge portion of the first sheet portion 31 (via the inner bag-constituting sheet material 41) A front side lower sheet piece 47a is formed by being joined together, and a half of the right side edge of the bottom gusset forming sheet portion 38 on the side of the second sheet portion 32 and a lower end portion of the right side edge portion of the second sheet portion 32. are joined together (through the inner bag-constituting sheet material 41) to form a rear lower sheet piece 47b. As described above, the front lower sheet piece 47a and the rear lower sheet piece 47b are partially joined together to form the right skirt portion 16 in the container body 20. As shown in FIG. Furthermore, the right end of the bottom gusset-constituting sheet portion 38 rises upward by forming the front lower sheet piece 47a and the rear lower sheet piece 47b. This constitutes the right rising portion 13b.
Similarly, the half portion of the left edge of the bottom gusset-constituting sheet portion 38 on the side of the first sheet portion 31 and the lower end portion of the left edge portion of the first sheet portion 31 (via the inner bag-constituting sheet material 41) A front-side lower sheet piece 45a is formed by joining the bottom gusset-constituting sheet portion 38 to the second sheet portion 32 side half of the left edge portion and the lower end of the left edge portion of the second sheet portion 32. The rear lower sheet piece 45b is formed by joining the parts (via the inner bag-constituting sheet material 41) to each other. The left skirt portion 16 is formed by joining the front lower sheet piece 45a and the rear lower sheet piece 45b together. Furthermore, the left end portion of the bottom gusset-constituting sheet portion 38 rises upward by forming the front side lower sheet piece 45a and the rear side lower sheet piece 45b. This constitutes the left rising portion 13b.
Each of the pair of rising portions 13b is formed, for example, in a substantially isosceles triangle shape when viewed from the side, and the apex angle of the isosceles triangle is arranged on the upper side.

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 .
In addition, in FIG. 7, the sealing boundary line 41a 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 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).

An insertion hole 41b through which the cylindrical portion 15a of the spout 15 is inserted is formed in a portion of the inner bag-constituting sheet material 41 that overlaps the top gusset-constituting sheet portion 39. As shown in FIG.
The flange portion 15b of the spout 15 is joined, for example, to the inner surface of the portion of the inner bag-constituting sheet material 41 that overlaps the top gusset-constituting sheet portion 39 . The cylindrical portion 15a protrudes through the insertion hole 41b of the inner bag-constituting sheet material 41 and the insertion hole 21a of the top gusset-constituting sheet portion 39 to the outer surface side of these sheets.

The protective sheet 80 has, for example, a trunk covering portion 81 covering the trunk portion 11 and a bottom gusset covering portion 84 covering the bottom gusset 12 .
The shape of the protective sheet 80 in a flatly unfolded state (see FIGS. 8 and 9) will be described below.
The bottom gusset covering portion 84 includes, for example, a first portion 85 covering one of the pair of rising portions 13b, a second portion 86 covering the other of the pair of rising portions 13b, and a third portion covering the bottom portion 13a. a portion 87; The third portion 87 is formed in, for example, a substantially rectangular shape. The right edge of the third portion 87 is connected to the first portion 85, for example, and the left edge of the third portion 87 is connected to the second portion 86, for example.
The first portion 85 is formed, for example, in a substantially isosceles triangle shape, and the apex angle of the isosceles triangle is arranged on the right side. That is, the front-to-rear dimension of the first portion 85 gradually decreases rightward. The second portion 86 is, for example, symmetrical with the first portion 85 .
The front-rear dimension of the bottom gusset covering portion 84 is set to be the same as the front-rear dimension of the bottom gusset-constituting sheet portion 38 . On the other hand, the maximum width dimension of the bottom gusset covering portion 84 is set to be smaller than the width dimension of the bottom gusset forming sheet portion 38 .
The trunk covering portion 81 includes, for example, a first trunk covering portion 81a that covers the first main surface portion 20a and a second trunk covering portion 81b that covers the second main surface portion 20b.
The lower edge of the first trunk covering portion 81a is connected to the upper edge of the third portion 87 of the bottom gusset covering portion 84, and the upper edge of the second trunk covering portion 81b is connected to the upper edge of the bottom gusset covering portion 84. It is connected with the lower edge of the 3-part 87 . Further, the width dimension of the lower end of the first trunk covering portion 81a decreases as it approaches the third portion 87, and the width dimension of the upper end of the second trunk covering portion 81b approaches the third portion 87. shrinking as it goes.
In the case of this embodiment, the first trunk covering portion 81 a is formed in substantially the same shape as the first seat portion 31 . However, the lower end portion of the first trunk covering portion 81 a is formed in a shape different from the lower end portion of the first seat portion 31 . More specifically, the lower edge of the lower end of the first trunk covering portion 81 a is narrower than the lower edge of the lower end of the first seat portion 31 .
Similarly, the second trunk covering portion 81 b is formed in substantially the same shape as the second seat portion 32 . However, the upper end portion of the second trunk covering portion 81b is formed in a shape different from that of the upper end portion of the second seat portion 32 . More specifically, the upper edge of the upper end of the second trunk covering portion 81 b is narrower than the upper edge of the upper end of the second seat portion 32 .

As described above, in the case of this embodiment, the protective sheet 80 is laminated on the main body constituent sheet material 21 . More specifically, in plan view, the outline of the peripheral edge of the first body covering portion 81a substantially matches the outline of the peripheral edge of the first seat portion 31, and the outline of the peripheral edge of the second body covering portion 81b is substantially the same. The outline of the peripheral portion substantially matches the outline of the peripheral portion of the second seat portion 32 . Further, in plan view, the upper edge of the bottom gusset covering portion 84 coincides with a part of the upper edge of the bottom gusset forming sheet portion 38, and the lower edge of the bottom gusset covering portion 84 coincides with the bottom gusset forming sheet portion 38. Consistent with part of the lower edge.
On the other hand, in a plan view, the contour line of the lower end of the first body covering portion 81a is arranged inside the contour line of the first seat portion 31, and the contour of the lower end of the second body covering portion 81b is arranged inside. The line is arranged inside the contour line of the second seat portion 32 . In addition, in a plan view, the outline of the first portion 85 is located inside the outline of the right edge of the bottom gusset-constituting sheet portion 38, and the outline of the second portion 86 is located inside the bottom gusset-constituting sheet. It is arranged inside the outline of the left edge of the portion 38 .

The container-constituting sheet material 51 is valley-folded along the folding lines 91, 92 and 94 shown in FIGS. The container-constituting sheet material 51 is formed into a triple bag-like structure by joining the peripheral edge portions (peripheral seal portions 52) of the constituent sheet materials 51 (the inner bag-constituting sheet materials 41) together. 8 and 9, and the mountain fold is a method of bending forward in FIGS. 8 and 9. 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 is formed to cover the bag 40, and a bag-shaped protective sheet 80 is formed to cover the outer surface of the container body 20. - 特許庁
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 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 main body seal portion 28, the inner bag seal portion 42, and the inner/outer seal portion 43 are collectively referred to as a peripheral seal portion 19 (the peripheral seal portion 19 includes the main body 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 top gusset peripheral edge seal piece 45 and the side seal piece 46 includes the main body 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 top gusset peripheral edge seal piece 45 and the side seal piece 46 may be composed of the main body seal portion 28 alone.

A portion of the first sheet portion 31 closer to the top gusset-forming sheet portion 39 than the folding line 95 is a first overlapping portion 31a. The first overlapping portion 31a is arranged to overlap one half of the top gusset-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 gusset forming sheet portion 38 than the folding line 96 is a second overlapping portion 32a. The second overlapping portion 32a is arranged to overlap the other half of the top gusset-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. 11, the container-constituting sheet material 51 is formed into a triple bag shape, and the sheet material container 100 (before filling with the filler) is obtained. In the sheet material container 100, for example, the filling material is injected into the non-joint portion 24 from the injection port 25a formed in the extension portion 25, and then the non-joint portion 24 is sealed at the base end portion of the extension portion 25. do. 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 forming the filling portion 60 containing the filling material, for example, the extending portion 25 is cut off.
Thus, the sheet material container 100 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 content 18 is filled in the containing area 17 through the cylindrical portion 15 a of the spout 15 , and then the cap portion 70 is attached to the spout 15 to enclose the content 18 in the containing area 17 . The sheet material container 100 thus formed is obtained.

As shown in FIG. 7, in the case of the present embodiment, the main body seal portion 26 includes, for example, an outer peripheral side main body seal portion 26a formed in a circumferential shape along the peripheral edge portion of the main body constituting sheet material, and an outer peripheral side main body seal portion 26a. and a plurality (for example, four) of inner peripheral side main body seal portions 26b arranged inside the portion 26a.
The outer peripheral side main body seal portion 26 a is formed in series, for example, over the first seat portion 31 , the second seat portion 32 , the bottom gusset-constituting seat portion 38 , and the top gusset-constituting seat portion 39 .
The inner peripheral main body seal portion 26b is formed, for example, in the first seat portion 31, the second seat portion 32, the bottom gusset-constituting seat portion 38, and the top gusset-constituting seat portion 39, respectively.
The outer peripheral side main body seal portion 26a is formed, for example, in an annular shape. Each inner circumference side main body seal portion 26b is also formed, for example, in an annular shape.
In addition, the contour line of the outer peripheral side main body seal portion 26 a is formed in a shape corresponding to the contour line of the main body constituting sheet material 21 .
The non-joint portion 24 (filling portion 60) is a closed region defined by the outer peripheral side main body seal portion 26a and the plurality of inner peripheral side main body seal portions 26b.

Further, in the case of the present embodiment, as shown in FIG. 9, the easily peelable seal portion 27 is, for example, a first easily peelable seal formed at a position corresponding to at least a portion of the body seal portion 26 (a position overlapping each other). 27a, a second easily peelable seal portion 27b formed at a position (overlapping position) corresponding to at least a portion of the inner and outer seal portion 43, and a third easily peelable seal portion 27c formed at the first portion 85. and a fourth easily peelable seal portion 27 d formed on the second portion 86 .

As shown in FIG. 9, the first easily peelable seal portion 27a includes a lower end portion of the first body covering portion 81a (the end on the side of the bottom gusset covering portion 84) and a lower end portion of the second body covering portion 81b ( It is formed at a position corresponding to the main body seal portion 26 (overlapping position) except for the end on the bottom gusset covering portion 84 side and both side edge portions of the bottom gusset covering portion 84 . That is, the first easily peelable seal portion 27a includes, for example, a seal portion that is formed in a circular shape along the peripheral edge of the first trunk covering portion 81a, and a seal portion that is formed along the peripheral edge of the second trunk covering portion 81b. It includes a circumferentially formed seal portion and a plurality of annularly formed seal portions.
As a result, the protective sheet 80 can be arranged along the bulge of the filling portion 60 , so that the filling portion 60 can be more preferably protected by the protective sheet 80 . Also, the appearance of the sheet material container 100 is improved. Furthermore, even if the inner bag 40 and thus the container body 20 shrink as the contents 18 decrease, the protective sheet 80 can well follow the shrinkage of the container body 20 .
The second easily peelable seal portion 27b includes the lower end portion of the first body covering portion 81a (the end portion on the side of the bottom gusset covering portion 84) and the lower end portion of the second body covering portion 81b (the end portion on the side of the bottom gusset covering portion 84). ) and the bottom gusset covering portion 84, are formed at positions corresponding to the inner and outer seal portions 43 (positions overlapping each other). That is, the second easily peelable seal portion 27b is arranged outside the first easily peelable seal portion 27a. The second easily peelable seal portion 27b includes a seal portion that is formed in a circular shape along the peripheral edge of the first barrel portion covering portion 81a, and a seal portion that is formed in a circular shape along the peripheral portion of the second barrel portion covering portion 81b. and a seal formed on.
As described above, in the case of the present embodiment, the easily peelable seal portion 27 is not formed on the lower end portion 81 c of the trunk covering portion 81 , and the lower end portion 81 c of the trunk covering portion 81 is positioned against the trunk portion 11 . are unbonded. As a result, after the content 18 is used up, the protective sheet 80 can be easily peeled off from the container body 20 starting from the lower end portion 81c (the portion not joined to the container body 20) of the trunk covering portion 81. can do.
In addition, in the example shown in FIG. 9, as an example, the easily peelable seal portion 27 (the first easily peelable seal portion 27a) is formed on the third portion 87 of the bottom gusset covering portion 84, but the present invention is not limited to this example. However, the easily peelable seal portion 27 (the first easily peelable seal portion 27 a ) may not be formed on the third portion 87 . That is, the entire surface of the third portion 87 may be non-bonded to the bottom surface portion 13a.

The third easily peelable seal portion 27c and the fourth easily peelable seal portion 27d are arranged outside the main body seal portion 26 formed in the bottom gusset forming sheet portion 38, for example. More specifically, the third easily peelable seal portion 27c is arranged on the right side of the body seal portion 26 formed in the bottom gusset-constituting sheet portion 38 . The fourth easily peelable seal portion 27 d is arranged on the left side of the body seal portion 26 formed in the bottom gusset-constituting sheet portion 38 .
In the case of this embodiment, the third easily peelable seal portion 27c is formed on the entire surface of the upper end portion 85a of the first portion 85. As shown in FIG. However, the third easily peelable seal portion 27c may be formed along the side edges of the first portion 85, for example. In this case, the third easy peel seal portion 27c may be formed continuously or intermittently. Further, the third easily peelable seal portion 27c may be formed in a linear shape or may be formed in an arc shape. Furthermore, the third easily peelable seal portion 27c may be formed on the entire first portion 85, or may be formed on half of the first portion 85 on the first sheet portion 31 side (or on the second sheet portion 32 side). may be formed.
Similarly, the fourth easily peelable seal portion 27d is formed on the entire surface of the upper end portion 86a of the second portion 86, for example. However, the fourth easily peelable seal portion 27d may be formed along the side edges of the second portion 86, for example. In this case, the fourth easily peelable seal portion 27d may be formed continuously or intermittently. Further, the fourth easily peelable seal portion 27d may be formed in a linear shape or may be formed in an arc shape. Furthermore, the fourth easily peelable seal portion 27d may be formed on the entire second portion 86, or may be formed on half of the second portion 86 on the first sheet portion 31 side (or on the second sheet portion 32 side). may be formed.
In the case of the present embodiment, in this way, only the upper ends 85a and 86a of each of the first portion 85 and the second portion 86 are joined to the pair of rising portions 13b so as to be easily peelable. .
Thereby, the joint area between each of the first portion 85 and the second portion 86 and the corresponding rising portion 13b can be made smaller. Therefore, after the content 18 is used up, each of the first portion 85 and the second portion 86 can be easily peeled off from the corresponding rising portion 13b.

Here, in the case of the present embodiment, each of the first main surface portion 20a and the second main surface portion 20b is the first surface, and the bottom gusset 12 is the second surface.
Therefore, when the protective sheet 80 is peeled off from the container body 20, the protective sheet 80 is separated from the trunk covering portion 81 (the first trunk covering portion 81a and the second trunk covering portion 81b) and the bottom gusset covering portion 84. can be suppressed from avoiding at the boundary of .
More specifically, in the case of the present embodiment, the inter-surface connection filling portion 66 is a boundary portion between the lower horizontally extending portion 61d of the first main surface side filling portion 61 and the front horizontally extending portion 63c of the bottom filling portion 63. and a boundary portion between the lower horizontally extending portion 61 d of the second main surface side filling portion 62 and the rear horizontally extending portion 63 d of the bottom filling portion 63 .
A boundary line 101a between the first main surface portion 20a (first surface) and the bottom gusset 12 (second surface) is, for example, a boundary line between the first sheet portion 31 and the bottom gusset-constituting sheet portion 38 (in the case of the present embodiment). , to which the bending lines 91 correspond). More specifically, the boundary line 101a extends between the right end portion shared by the first main surface portion 20a and the bottom gusset 12 and the left end portion shared by the first main surface portion 20a and the bottom gusset 12. extending in a straight line.
A boundary line 101b between the second main surface portion 20b (first surface) and the bottom gusset 12 (second surface) is, for example, a boundary line between the second sheet portion 32 and the bottom gusset-constituting sheet portion 38 (in this embodiment, , to which the fold line 92 corresponds). More specifically, the boundary line 101b extends between the right end portion shared by the second main surface portion 20b and the bottom gusset 12 and the left end portion shared by the second main surface portion 20b and the bottom gusset 12. extending in a straight line.
That is, the boundary line 101 between the first surface and the second surface is, for example, a folding line formed when the container-constituting sheet material 51 is made into a bag, and the first surface and the second surface share the boundary line 101 . It is a straight line extending between the two ends. However, as will be described later, in the present invention, the boundary line 101 between the first surface and the second surface may not be, for example, a folding line formed when the container-constituting sheet material 51 is made into a bag. It may be a straight line extending between two corners shared by the first surface and the second surface.
The outer contour line 66a of the inter-face connection filling portion 66 is, for example, the contour line of the outer peripheral side main body seal portion 26a of the inter-face connection filling portion 66 .
Therefore, in the case of this embodiment, as shown in FIG. 8, the intersection 102 is the lower end of the right edge of the first sheet portion 31 and the bottom gusset-constituting sheet when the container-constituting sheet material 51 is flatly unfolded. an intersection point 102a between the upper end of the right edge of the portion 38 and the upper end of the right edge portion; An intersection 102c between the upper end of the right edge and the lower end of the right edge of the bottom gusset-constituting sheet portion 38, and the upper end of the left edge of the second sheet portion 32 and the lower end of the right edge of the bottom gusset-constituting sheet portion 38. 102d and four intersections.

Here, in the case of this embodiment, as shown in FIG. 9, the protective sheet 80 has a shape that is locally constricted toward the inside at the boundary between the trunk covering portion 81 and the bottom gusset covering portion 84. ing.
More specifically, cut-out portions 80d are formed in the protection sheet 80 at locations corresponding to the intersections 102a to 102d. That is, the notch-shaped portions 80d are formed at four locations on the protective sheet 80: a position corresponding to the intersection 102a, a position corresponding to the intersection 102b, a position corresponding to the intersection 102c, and a position corresponding to the intersection 102d. It is The planar shape of each cutout portion 80d is, for example, a wedge shape that narrows toward the corresponding intersections 102a to 102d. The corners of the notch-shaped portions 80d are arranged at positions corresponding to the intersections 102a to 102d (positions overlapping each other).
As a result, while the container body 20 is satisfactorily covered with the protective sheet 80 , it is possible to prevent the protective sheet 80 from biting into the face-to-face connection filling portion 66 at the intersection 102 and its vicinity.

Further, in the case of this embodiment, the protective sheet 80 is locally formed with a notch 80 b at a portion corresponding to the intersection point 102 , so that the intersection point 102 is exposed from the protective sheet 80 .
Thus, while the protective sheet 80 satisfactorily covers the filling section 60 and thus the container body 20, it is possible to more reliably prevent the protective sheet 80 from biting into the face-to-face connection filling section 66 at or near the intersection 102 . Therefore, when peeling the protective sheet 80 from the container body 20 , it is possible to prevent the protective sheet 80 from being caught or left unteared in the vicinity of the intersection point 102 .
In the case of this embodiment, as shown in FIG. 9, the notch 80b corresponds to a position corresponding to the intersection 102a, a position corresponding to the intersection 102b, a position corresponding to the intersection 102c, and a position corresponding to the intersection 102d in the protective sheet 80. It is formed at four locations, ie, the position where the
That is, at positions corresponding to the intersections 102a to 102d of the protective sheet 80, two-level cuts (notch-shaped portion 80d and notch 80b) are formed.
The notch 80b is, for example, a through hole (punched hole) that is formed so as to graze the corner of each notch shape portion 80d. More specifically, as shown in FIGS. 9 and 10, each notch 80b is formed such that the center of the notch 80b and the corresponding intersections 102a to 102d overlap each other in plan view.
As a result, the container body 20 and thus the filling portion 60 can be well protected by the protective sheet 80, and the intersections 102 (intersections 102a to 102d) can be more reliably exposed from the protective cover.
Each notch 80b is, for example, formed in a substantially circular shape (cove shape) with a part missing in plan view, and the outline of the notch 80b is a curved curve. As a result, when the protective sheet 80 is peeled off from the container body 20, it is possible to suppress the concentration of stress on the peripheral edge of the notch 80b in the protective sheet 80, so that the protective sheet 80 is more reliably prevented from being torn. can.
In the present invention, the shape of the protective sheet 80 should be formed so that at least the intersection 102 is exposed from the protective sheet 80, and the shape of the notch-shaped portion 80d and the shape of the notch 80b are limited to the above examples. not. Moreover, the protective sheet 80 does not have to have the notch-shaped portion 80d and the notch 80b, for example.

Here, as shown in FIGS. 1 and 2, the face-to-face connection filling portion 66 has a projecting portion 69a projecting outward, and the protective sheet 80 also covers the projecting portion 69a.
As a result, the projection 69a can be protected by the protective sheet 80, so that the projection 69a (in particular, the tip in the projecting direction) can be prevented from being rubbed. As a result, it is possible to prevent pinholes from being formed in the projecting portion 69a, so that it is possible to prevent the filling portion 60 from unintentionally communicating with the outside air.
More specifically, in the case of the present embodiment, the filling portion 60 extends outward near the intersection 69b between the vertically extending portions 61a and 61b of the first main surface side filling portion 61 and the lower horizontally extending portion 61d. The projecting portion 69a that protrudes in a protruding manner is likely to be formed. However, in the case of the present embodiment, the protective sheet 80 avoids the intersection 102, but covers the vicinity of the intersection 69b between the vertically extending portions 61a and 61b of the first main surface side filling portion 61 and the lower horizontally extending portion 61d. Since it covers, the protrusion 69a can be protected.
It should be noted that the “outer side” here means the opposite side (inner side) of the center position in the thickness direction of the container body 20 .

Further, as an example, it is preferable to have a marking portion 88 that prompts peeling of the protective sheet 80 from the container body 20 starting from the lower end portion 81c of the trunk covering portion 81 .
In the example shown in FIG. 2, the outer surface of the protective sheet 80 (for example, the outer surface of the first torso covering portion 81a) is provided with a label 88 that reads "Please remove the protective sheet from here after use."

Further, the sheet material container 100 includes, for example, an outside air introduction portion 89 for introducing outside air into the gap between the outer surface of the container body 20 and the inner surface of the protective sheet 80 .
As an example, as shown in FIG. 1 , the outside air introduction part 89 is arranged below the first trunk covering part 81 a of the protective sheet 80 . Outside air can be introduced into the gap between the outer surface of the container body 20 and the inner surface of the protective sheet 80 via the outside air introduction portion 89 .

[Second embodiment]
Next, a second embodiment will be described with reference to FIGS. 12 to 15. FIG. In addition, in FIG. 15, the areas where the main body seal portion 26 and the peripheral seal portion 52 are formed are indicated by chain double-dashed lines.
The sheet material container 100 according to the present embodiment differs from the sheet material container 100 according to the second embodiment in the following points, and the other points are the sheet material container 100 according to the second embodiment. It is constructed in the same manner as the material container 100 .

In the case of this embodiment, as shown in FIGS. 12 to 14, the container body 20 is formed in a substantially rectangular parallelepiped shape (for example, a substantially regular hexahedron shape) and has six faces. Of these six surfaces, the surfaces that are adjacent to each other and intersect with each other, and are arranged across the filling portion 60 (inter-surface connection filling portion 66), are the first surfaces. and the second aspect.
In this embodiment, the outer surface of the container body 20 is covered with a protective sheet 80 shown in FIG. The protective cover 80 covers the portion from the bottom gusset 12 to the top gusset 14 of the container body 20.例文帳に追加
To manufacture the sheet material container 100, first, the container-constituting sheet material 51 is folded in two along the folding line 97 (see FIGS. 12 and 15), and the peripheral edges of the container-constituting sheet material 51 are joined.

Here, in the case of the present embodiment, of the six surfaces of the container body 20 , the side portion 67 is a boundary portion between the surfaces having a relationship between the first surface and the second surface. As shown in FIG. 14, the side-shaped portion 67 has a concave surface that is more concave than each of the first and second surfaces. It extends between two shared corners. Part of the face-to-face connection filling portion 66 is arranged at both end portions of the side portion 67 . Then, as shown in FIG. 15, the folding line 97 is formed at a position different from the boundary portion (side portion 67) between the first surface and the second surface.
In this case, as an example, the boundary line 101 between the first surface and the second surface is a straight line extending between both ends of the side portion 67, and the first surface and the second surface It extends between two corners 111 that are shared with each other. An intersection point 102 between the boundary line 101 and the outer outline 66a of the inter-surface connection filling portion 66 is, for example, a position corresponding to the top of two corners 111 shared by the first surface and the second surface. are placed.
In the case of this embodiment, the protective sheet 80 has a through hole 80 e locally formed in a portion corresponding to the intersection point 102 , so that the intersection point 102 is exposed from the protective sheet 80 .
Such a configuration can also prevent the protective sheet 80 from biting into the inter-surface connection filling portion 66 at or near the intersection 102 . Therefore, when peeling the protective sheet 80 from the container body 20 , it is possible to prevent the protective sheet 80 from being caught or left unteared in the vicinity of the intersection point 102 . Therefore, the protective sheet 80 can be easily separated from the container body 20 after the contents 18 have been used up while protecting the container body with the protective sheet.
In the example shown in FIG. 15 , through holes 80 e are formed in the protective sheet 80 at portions corresponding to all the intersections 102 , but the present invention is not limited to this example, and the through holes 80 e are It may be selectively formed at a portion corresponding to some of the intersections 102 among the intersections 102 .

Moreover, as shown in FIG. 15, the filling part 60 is preferably arranged so as to avoid the tops of the two corners 111 shared by the first surface and the second surface. Further, the through hole 80e is set to have an outer diameter and a layout that allows, for example, the intersection 102 (top of the corner 111) to be exposed from the protective sheet 80 while covering the filling portion 60 in the vicinity of the intersection 102. is preferred.
By doing so, the filling part 60 can be more reliably protected by the protective sheet 80, and the protective sheet 80 can be easily separated from the container body 20 after the content 18 is used up.

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, the sheet material container 100 may not include the inner bag 40 . In this case, the container body 20 constitutes the accommodation area 17 . That is, the container main body 20 is formed and the storage area 17 is formed by joining parts of the inner film layer 23 of the main body-constituting sheet material 21 at the peripheral edge seal portion 19 .
In this case, for example, the flange portion 15b is directly joined to the inner film layer 23 of the main body constituting sheet material 21 by the main body sealing portion 26 .

Further, in the above description, an example in which the sheet material container 100 is a pump container having the pump portion 72 has been described, but the sheet material container 100 may be other than a pump container. For example, the sheet material container 100 may have a cap (such as a screw cap) that closes the cylindrical portion 15a.

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 12 Bottom gusset 14 Top gusset 15 Spout 17 Storage area 18 Contents 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 seal portion 27 Easy peel seal portion 40 Inner bag 41 Inner bag-constituting sheet material 51 Container-constituting sheet material 60 Filling portion 66 Face-to-face connection filling portion 69a Protruding portion 70 Cap portion 70a Suction port 76 Discharge port 80 Protective sheet 80b Notch 81 Body portion covering portion 84 Bottom gusset covering portion 88 Marking portion 100 sheet material container 102 intersection

Claims (5)

A sheet material container comprising one or more sheet materials including a body forming sheet material having an outer film layer and an inner film layer laminated to each other,
a containment area for containing the contents;
a container body configured by the body-constituting sheet material and surrounding the accommodation area;
a protective sheet covering the outer surface of the container body;
with
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 capable of enclosing a filler between the outer film layer and the inner film layer in the non-bonded portion,
The container body has a first surface and a second surface adjacent to the first surface and intersecting the first surface,
The filling portion has an inter-surface connection filling portion arranged across the first surface and the second surface,
The protective sheet continuously covers the first surface and the second surface,
A sheet material container, wherein an intersection of a boundary line between the first surface and the second surface and an outer contour line of the inter-surface connection filling portion is exposed from the protective sheet. The face-to-face connection filling part has a projection projecting outward,
2. The sheet material container according to claim 1, wherein said protective sheet covers said protrusion. 3. The sheet material container according to claim 1 or 2, wherein a notch is locally formed in a portion of the protective sheet corresponding to the intersection so that the intersection is exposed from the protective sheet. The container body has a body and a bottom gusset,
The trunk portion has a first main surface portion and a second main surface portion that are arranged to face each other with the housing area interposed therebetween,
Each of the first main surface portion and the second main surface portion is the first surface,
4. A sheet material container according to any one of claims 1 to 3, wherein said bottom gusset is said second surface. The sheet material container according to any one of claims 1 to 4, wherein the protective sheet is a laminate of a paper layer and a resin layer.

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