JP2013067408A - Pouch container and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouch container further improved in touch feeling by lowering the rigidity of a side seal part.SOLUTION: The pouch container 10 includes a surface sheet 11, a rear face sheet 12, a bottom gusset sheet 13 and an upper face sheet 14. The pouch container 10 includes the side seal part 22, and the thickness of at least a part of an outer edge 24 of the side seal part 22 is thinner than the thickness of an inner edge 26 of the seal part 22. The thickness of an outer end 25 of the side seal part 22 is preferably thinner than the thickness of the inner edge 26 of the seal part 22.

Description

  The present invention relates to a pouch container and a method for manufacturing the same.

  Generally, a pouch container is composed of one or a plurality of flexible sheet materials, and includes a seal portion formed by overlapping and joining the sheet materials for sealing the container and the like. . Among the seal portions, the side seal portion that is easy to touch when the container is gripped is also formed by overlapping the sheet material. Therefore, the thickness of the seal portion is increased and the rigidity is increased. That is, there exists a problem that the soft feeling of a container is impaired by this highly rigid side seal part, and a touch feeling worsens.

  In view of such a situation, a pouch container with improved touch feeling has been proposed (for example, see Patent Document 1). Patent Document 1 discloses a pouch container that has a cut portion in a side seal portion, and the side seal portion is folded back from the cut portion when the side seal portion is pressed from the width direction of the container.

JP 2009-296552 A

  In the pouch container of Patent Document 1, the touch feeling is improved by folding the side seal portion. However, before the side seal portion is folded back, the hand once touches the highly rigid seal portion. That is, an object of the present invention is to provide a pouch container in which the rigidity of the side seal portion is lowered and the feeling of touch is further improved.

The pouch container according to the present invention is composed of one or a plurality of sheet materials, and includes a side seal portion formed by overlapping and joining the sheet materials, and at least a part of an outer edge portion of the side seal portion. Is thinner than the thickness of the inner edge portion of the seal portion.
According to the said structure, the rigidity of the outer edge part of the side seal part which a hand touches easily when holding a pouch container can be made low, and it can be made soft. Therefore, the soft feeling of the container is not impaired, and a good touch feeling can be realized.

In the pouch container according to the present invention, it is preferable that the side seal part has a thinner outer end than the inner edge part of the seal part.
Since the outer end of the side seal part is a part that is particularly easy to touch, in this configuration, the rigidity at the outer end can be reduced to achieve a better touch feeling.

In the pouch container according to the present invention, it is preferable that the side seal portion includes a curved portion formed so as to be substantially in contact with the outer end thereof.
According to the said structure, a curved part elastically deforms when a hand touches a side seal part, and a cushion effect works. Therefore, the soft feeling of the container can be easily maintained, and a better touch feeling can be realized.

In the pouch container according to the present invention, the side seal portion includes a folded seal portion formed by folding the sheet material, and the thickness of at least a part of the outer edge portion of the folded seal portion is greater than the thickness of the inner edge portion of the seal portion. Can also be made thin.
Since there is no end surface of the sheet material in the folded seal portion, a better feel can be obtained compared to the edge seal portion that joins the edges of the sheet material. The feeling can be further improved.

  The method for manufacturing a pouch container according to the present invention includes a step of forming a side seal portion by overlapping and joining one or a plurality of sheet materials, and an outer edge of the seal portion during or after the formation of the side seal portion. And a thinning step of making the thickness of at least a part of the portion thinner than the thickness of the inner edge of the seal portion.

  In the method of manufacturing a pouch container according to the present invention, in the thinning step, the outer edge portion of the side seal portion is embossed to form a curved portion at a position substantially in contact with the outer end of the seal portion, and the seal It is preferable to make the thickness of the outer end of the portion thinner than the thickness of the inner edge of the seal portion.

  ADVANTAGE OF THE INVENTION According to this invention, the rigidity of a side seal part can be made low and the pouch container which has a favorable touch feeling can be provided.

It is a front view of the pouch container which is the 1st Embodiment of this invention, Comprising: It is a figure which shows the form before filling the contents. It is a perspective view of the pouch container which is the 1st Embodiment of this invention, Comprising: It is a figure which shows the form with which the content was filled. It is a figure which shows typically the AA cross section of FIG. It is the B section enlarged view of FIG. It is a figure which shows typically an example of the thinning process in the manufacture process of the pouch container which is the 1st Embodiment of this invention. It is a figure which shows typically another example of the thinning process in the manufacture process of the pouch container which is the 1st Embodiment of this invention. It is a figure which shows a mode that the pouch container which is the 1st Embodiment of this invention is hold | gripped. It is a perspective view of the pouch container which is the 2nd Embodiment of this invention, Comprising: It is a figure which shows the form with which the content was filled. It is a figure which shows CC section of FIG. 8 typically. FIG. 10 is an enlarged view of a D1 part in FIG. 9. FIG. 10 is an enlarged view of a portion D2 in FIG. 9. It is a figure which shows the modification of the pouch container which is embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the embodiment, a portion where a pouring part for taking out contents is provided is an “upper portion” of the container, and a portion facing the upper portion is a “lower portion” of the container. Further, the direction in which the sheet materials are laminated is defined as the “front and back direction” of the container, and the direction perpendicular to the vertical direction and the front and back direction is defined as the “width direction or left and right direction” of the container.

<First Embodiment>
With reference to FIGS. 1-4, the structure of the pouch container 10 which is 1st Embodiment is demonstrated.
FIG. 1 shows the pouch container 10 before the contents are filled, and FIG. 2 shows the pouch container 10 filled with the contents. The pouch container 10 shown in the figure is composed of one or a plurality of sheet materials, and includes a side seal portion 22 formed by overlapping and joining the sheet materials, and at least one of the outer edge portions 24 of the side seal portion 22. The thickness of the portion is smaller than the thickness of the inner edge portion 26 of the side seal portion 22.

  The pouch container 10 includes a top sheet 11, a back sheet 12, a bottom gusset sheet 13, and a top sheet 14, and is a standing pouch that can be self-supported by filling the contents. The top sheet 11 and the back sheet 12 are sheet materials that respectively constitute the front surface part and the back surface part of the container, and the bottom gusset sheet 13 is inserted by being folded between the front surface part and the back surface part. It is the sheet | seat material to comprise. The bottom gusset sheet 13 is folded back into a mountain fold toward the inner side of the container by a crease line 15 formed along the width direction. The upper surface sheet 14 is a sheet material constituting the upper surface portion of the container.

  The pouch container 10 forms a seal portion between the top sheet 11 and the back sheet 12 that are overlapped with each other, and joins the edges of each sheet material with the bottom gusset sheet 13 inserted from the lower end side. This is a structure in which a filling portion 17 that is a container internal space filled with an object is sealed. In addition, the upper end of the filling part 17 is sealed by joining the top sheet 14 to the upper edges of the top sheet 11 and the back sheet 12. The contents to be filled are not particularly limited, and examples thereof include beverages such as sports drinks.

  Each of the top sheet 11 and the back sheet 12 has a substantially rectangular shape extending slightly longer in the vertical direction. The bottom gusset sheet 13 also has a substantially rectangular shape, and is provided, for example, in a range of about ¼ from the lower ends of the top sheet 11 and the back sheet 12. The top sheet 14 has a substantially hexagonal shape and is provided at the upper ends of the top sheet 11 and the back sheet 12. Hereinafter, in the pouch container 10, a portion constituted by each sheet material is referred to as a “body portion”.

  The sheet material is a sheet-like member that constitutes the wall surface portion of the pouch container 10, and is usually made of a resin film. The resin film constituting the sheet material is required to have basic performance as a package, such as impact resistance, wear resistance, and heat resistance. Further, since the seal portion is usually formed by heat sealing, the sheet material is also required to have heat sealing properties. As the sheet material, a multi-layer sheet material having a base film layer and a sealant layer that imparts heat sealability is preferable. It is preferable to provide a gas barrier layer.

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

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

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

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

  The sheet material can be provided with a printed layer (not shown) for displaying the product name of the contents, the product description such as raw materials and precautions for use, and other various designs. For example, the printing layer can be formed on the inner surface of the base film layer by a known method such as gravure printing.

  The seal part is preferably formed by heat sealing. The seal part by heat sealing can be formed by superposing and thermocompression bonding so that the sealant layer of each sheet material is inside the container.

  The pouch container 10 includes an upper edge seal part 20, a lower edge seal part 21, and a side seal part 22 as the seal part. The upper edge seal portion 20 is a seal portion formed at the edge of the top sheet 14 and is formed by joining the top sheet 14, the top sheet 11, and the back sheet 12. The lower edge seal portion 21 is a seal portion formed at the end edge of the bottom gusset sheet 13, and is formed by joining the bottom gusset sheet 13, the top sheet 11, and the back sheet 12. Further, the bottom gusset sheet 13 is formed with notches 16 at both ends in the width direction, and the top sheet 11 and the back sheet 12 are directly joined through the notches 16.

  The side seal portions 22 are formed at the left and right ends by directly joining the width direction edges of the top sheet 11 and the back sheet 12. From the viewpoint of productivity and the like, the side seal portion 22 is formed in a state in which the end portions of the topsheet 11 and the backsheet 12 coincide with each other. The side seal part 22 is an edge seal part for sealing the filling part 17 like other seal parts.

  The side seal portion 22 is formed with a certain width W along the vertical direction. As will be described in detail later, a curved portion 23 is formed on the outer edge portion 24 of the side seal portion 22 by, for example, embossing, and a portion of the curved portion 23 is thinned. Here, the outer edge portion 24 is a portion from the outer end 25 of the side seal portion 22 to the center in the width direction of the seal portion 22 (shown by an imaginary line Z1 extending in the vertical direction along the center in the width direction in FIG. 1). means. The inner edge portion 26 means a portion from the imaginary line Z1 to the inner end 27. The outer end 25 is positioned at the ends of the topsheet 11 and the backsheet 12, and the inner end 27 is positioned at the end of the filling portion 17.

  In the pouch container 10, a stopper 30 is provided at the center of the top sheet 14 as a pouring part for taking out the contents. The spout 30 includes a spout 31 and a cap 32 screwed into the mouth of the spout 31, and the spout 31 is joined to the top sheet 14. Instead of the plug 30, a form in which an opening for forming an opening is provided or a form in which a zipper for opening and closing the opening is provided may be used.

  When the pouch container 10 is filled with the contents, the top sheet 11 and the back sheet 12 are separated from each other, and the bottom gusset sheet 13 is expanded and swollen. Thus, the self-supporting property of the pouch container 10 is expressed. The contents can be filled from the spout 31. In the pouch container 10, by providing the top sheet 14, the upper part of the container also swells into a bottle-like form.

Hereinafter, the above-described components of the pouch container 10, particularly the configuration of the side seal portion 22, will be described in further detail with reference to FIGS. 3 and 4 as appropriate.
3 is a diagram schematically showing the AA cross section of FIG. 2, that is, a cross section along the width direction of the body portion, and FIG. 4 is an enlarged view of the B portion of FIG. is there.

  As shown in FIGS. 3 and 4, the thickness of at least a part of the outer edge portion 24 of the side seal portion 22 is thinner than the thickness of the inner edge portion 26 of the side seal portion 22. The side seal portion 22 is formed by overlapping the two sheet materials of the top sheet 11 and the back sheet 12, but the thickness of the outer edge portion 24 is thinner than the thickness of the two sheet materials. On the other hand, the thickness of the inner edge portion 26 is substantially equal to the thickness of the two sheet materials, for example. Note that “substantially equal” includes a state that can be regarded as substantially equal, for example, a case where the difference in thickness is ± 5% or less.

  The side seal portion 22 preferably includes a curved portion 23 formed substantially in contact with the outer end 25. “Substantially in contact” includes a state that can be regarded as being substantially in contact, for example, a case where the distance between the tip end of the curved portion 23 and the outer end 25 is 5% or less of the width W of the side seal portion 22. In the present embodiment, substantially the entire outer edge portion 24 is bent and bent into a mountain shape by embossing. The curved portion 23 has a substantially arc shape in cross section along the width direction, and bulges toward the front side. The maximum bulging portion 28 of the curved portion 23 is at the center in the width direction of the outer edge portion 24, and the outer end 25 (that is, the tip of the curved portion 23) faces the back side. On the other hand, the inner edge portion 26 has a shape extending linearly.

  In the side seal portion 22, it is preferable that the outer end 25 is thinner than the inner edge portion 26. In the present embodiment, about half of the outer edge portion 24 on the outer end 25 side becomes thinner toward the outer end 25. That is, the side seal portion 22 is gradually thinned from the maximum bulge portion 28 toward the outer end 25. On the other hand, about half of the outer edge portion 24 on the inner edge portion 26 side is substantially equal to the thickness of the inner edge portion 26, for example.

  Specifically, the thickness of the top sheet 11 and the back sheet 12 is preferably 20 μm to 250 μm, and more preferably 30 μm to 200 μm. As described above, the inner edge portion 26 is substantially equal to the thickness obtained by adding these two sheet materials. The thickness of the outer edge portion 24 is preferably about 20% to 80% of the thickness of the inner edge portion 26 in the thinnest portion (that is, the outer end 25) from the viewpoint of reduction in rigidity and productivity, and is preferably 30%. About -70% is more preferable, and about 40% -60% is especially preferable. In other words, it is particularly preferable to reduce the thickness of the outer end 25 to about the thickness of one sheet material.

  The side seal portion 22 is thinned by forming a curved portion 23 in a predetermined length centered on a portion that is easy to touch when gripping the container, for example, the center in the vertical direction of the trunk portion. Is preferred. For example, the predetermined length is set to a length (for example, about 10 cm) such that at least four fingers are arranged in the vertical direction. When viewed from the front side, the curved portion 23 bulges at a substantially constant bulging height along the longitudinal direction of the side seal portion 22, for example. On the other hand, when viewed from the back side, a groove shape along the longitudinal direction of the side seal portion 22 is exhibited.

  Note that the side seal portion 22 may be thinned over the entire width of the outer edge portion 24. Alternatively, as long as at least a part of the outer edge part 24 is thinned, a part of the inner edge part 26 may be thinned. Moreover, the curved part 23 may be formed over the full width of the side seal part 22, and the form which bulges to the back side may be sufficient as the curved part 23.

Next, an example of the manufacturing method of the pouch container 10 provided with the said structure is demonstrated.
Here, although the thinning process by embossing is illustrated, a manufacturing method is not limited to this. Further, the embossing method is not limited to the illustrated method.

  First, the long sheets of the top sheet 11 and the back sheet 12 are overlapped, and the long body of the bottom gusset sheet 13 folded at the crease line 15 is inserted from one end side along the longitudinal direction. Then, the lower edge seal portion 21 is formed by heat sealing. The long sheet of the top sheet 14 is laminated on the long sheets of the top sheet 11 and the back sheet 12 with the top of the top sheet 11 folded back to the bottom. Then, the upper edge seal portion 20 is formed by heat sealing. The plug 30 may be attached before the formation of the upper edge seal portion 20 or may be attached after the formation of the seal portion.

  Then, the side seal part 22 (wide seal part for two containers) orthogonal to the longitudinal direction of the long body in which the upper edge seal part 20 and the lower edge seal part 21 are formed is formed. Then, the side seal portion 22 is thinned by embossing, and finally the long body is cut by the side seal portion 22 using a die cut roll or the like, and divided into individual container sizes (see FIG. 5). . Note that embossing may be performed after dividing into individual container sizes (see FIG. 6). Alternatively, it may be thinned simultaneously with the formation of the side seal portion 22, or may be divided into individual container sizes simultaneously with the thinning.

FIG. 5 schematically shows an example of a thinning process by embossing. Here, for convenience of explanation, the top, bottom, left, and right of the paper surface are the top, bottom, left, and right of a mold or the like.
The thinning step is a step of making the thickness of at least a part of the outer edge portion 24 of the side seal portion 22 thinner than the thickness of the inner edge portion 26. In the thinning process by embossing, for example, a convex mold 100 and a concave mold 101 arranged side by side in the vertical direction are used. In the present embodiment, the outer edge portion 24 is embossed to form the curved portion 23 at a position substantially in contact with the outer end 25, and the thickness of the outer end 25 is made thinner than the thickness of the inner edge portion 26.

  The convex part of the convex mold 100 and the concave part of the concave mold 101 have, for example, a substantially arc shape in both cross-sectional shapes, and are bilaterally symmetric with respect to an imaginary line Z2 passing through the center in the left-right direction. In this thinning step, the side seal portion 22 is inserted and pressed between the convex mold 100 and the concave mold 101. The temperature during pressing is preferably set to be equal to or higher than the softening temperature of the sheet material. As a result, the curved portion 23 is formed, and for example, the portion in contact with the upper end of the concave portion becomes the maximum bulged portion 28 of the curved portion 23. At this time, the side seal part 22 is particularly strongly pressed on the left side of the maximum bulging part 28 by pressing the convex mold 100 in a state in which the center in the left-right direction is slightly deviated to the left of the virtual line Z2. Thinner. And the thinnest part (part shown by the arrow) is formed in the edge of the curved part 23, and the side seal part 22 where the thickness of the outer end 25 became the thinnest by cutting the side seal part 22 here. Is obtained.

FIG. 6 schematically shows another example of the thinning process by embossing.
The convex part of the convex mold 102 and the concave part of the concave mold 103 have, for example, a substantially arc shape in both cross-sectional shapes, but the concave part of the concave mold 103 is relative to an imaginary line Z3 passing through the center in the left-right direction. The left curve is a little steep. The distance d2 at the left end is narrower than the distance d1 at the right end between the convex portion of the convex mold 102 and the concave portion of the concave mold 103. The interval at the time of pressing at the right end is set to, for example, an interval corresponding to the thickness of two sheet materials, and the interval at the time of pressing at the left end is set to an interval corresponding to the thickness of one sheet material, for example. Is done. The side seal portion 22 is inserted between the convex mold 102 and the concave mold 103 from the right side, and is pressed in a state where the outer end 25k before embossing is set in the vicinity of the virtual line Z3. Thereby, the curved portion 23 is formed at a position substantially in contact with the outer end 25, and the side seal portion 22 in which the resin of the sheet material flows to the left side and becomes thinner toward the outer end 25 is obtained.

  Next, the effects of the pouch container 10 having the above configuration will be described in detail with reference to FIG. 7 as appropriate. FIG. 7 shows how the pouch container 10 is gripped.

  Since the pouch container 10 has a bottle-like shape, the body portion can be easily grasped with one hand. In the example illustrated in FIG. 7, the vicinity of the center in the vertical direction of the body portion is gripped from the top sheet 11 side. The thumb rests on one side seal portion 22 and the other four fingers rest on the other side seal portion 22.

  In the pouch container 10, a curved portion 23 is formed in the vicinity of the center in the vertical direction of the side seal portion 22, and the outer end 25 is thinned to the thickness of one sheet material. That is, in the pouch container 10, the rigidity of the part touched by the hand in the side seal portion 22 is reduced and the flexibility is increased. For this reason, the soft feeling of the pouch container 10 is hard to be impaired, and a good hand feeling can be realized.

  Further, in the pouch container 10, when the hand touches the side seal portion 22, the curved portion 23 is elastically deformed, a cushioning effect is exerted, and the soft feeling is further improved. Furthermore, since the outer end 25 faces the back side by the curved portion 23, the end surface existing at the outer end 25 is difficult to touch, and it is easy to realize a good touch feeling.

<Second Embodiment>
With reference to FIGS. 8-11, the structure of the pouch container 50 which is 2nd Embodiment is demonstrated.
FIG. 8 is a perspective view of the pouch container 50 and shows a form filled with contents. FIG. 9 is a diagram schematically showing a cross section taken along the line CC of FIG. 8, that is, a cross section along the width direction of the body portion. FIG. 10 is an enlarged view of a portion D1 in FIG. 9, and FIG. 11 is an enlarged view of a portion D2 in FIG. 9 (hatching is omitted for clarity of the drawing).

  The pouch container 50 is a side gusset pouch composed of a single sheet material 51 (see FIGS. 8 and 9). The sheet material 51 constitutes a front surface portion and a back surface portion, and constitutes a side face gusset portion that is folded between the front surface portion and the back surface portion. And the seal part which joins the edge of each part is formed, and it has the structure which sealed the filling part 52 which is the container internal space with which the contents are filled.

  The pouch container 50 includes an upper edge seal part 60, a lower edge seal part 61, and a side seal part 62 as the seal part. The upper edge seal portion 60 and the lower edge seal portion 61 are formed by directly joining the front surface portion and the back surface portion. However, in a part of the upper edge seal portion 60, a spout 71 is attached between the front surface portion and the back surface portion so that the cap 72 is screwed to form the spout 70. The side seal portion 62 is a seal portion formed at the edge of the side gusset portion, and is formed by joining the side gusset portion and the front surface portion or the back surface portion.

  The side seal portion 62 includes an edge seal portion 63 that joins the edges of the sheet material 51, and a folded seal portion 64 that folds and joins the sheet material 51. The edge seal part 63 is a seal part for sealing the filling part 52, and is provided, for example, at one place between the edge of the side gusset part and the edge of the back surface part. The folding seal part 64 is a seal part for improving the moldability of the pouch container 50, and is provided, for example, at three locations. In the present embodiment, curved portions 65 and 66 are formed in the edge seal portion 63 and the folded seal portion 64, respectively, and the thin portions extend from the maximum bulge portions P1 and P2 of the curved portions 65 and 66 to the outer ends E1 and E2. (See FIGS. 10 and 11). It should be noted that the bent portions 65 and 66 can have the same shape (for example, the same as the bent portion 23) between the edge seal portion 63 and the folded seal portion 64.

The above embodiment can be appropriately changed in design without departing from the object of the present invention.
For example, in the above embodiments, standing pouches and side gusset pouches having independence have been illustrated, but the configuration of the present invention may be applied to other pouch forms such as flat pouches having no independence. The configuration of the present invention can be applied to various types of pouches having side seal portions.

Moreover, in the said embodiment, although the side seal part containing the curved part bent in the mountain shape was illustrated, a side seal part is good also as a form which is illustrated in FIG.
For example, the side seal portion 80 including a bent portion 82 that is bent into a substantially triangular mountain shape at the crease line 81 may be used. Alternatively, in the side seal portions 83 and 85 that are folded-back seal portions formed by folding back one sheet material, the outer ends E3 and E4 include non-mountain curved portions 84 and 86 that are curved toward one side. It is good. Further, the side seal portion 85 has the smallest thickness inside the outer end E4. Or it is good also as the side seal part 87 of the form extended linearly without including a curved part.

<First Embodiment>
10 Pouch container, 11 Top sheet, 12 Back sheet, 13 Bottom gusset sheet, 14 Top sheet, 15 Crease line, 16 Notch, 17 Filling part, 20 Upper edge seal part, 21 Lower edge seal part, 22 Side seal part, 23 bent portions, 24 outer edge portions, 25 outer ends, 26 inner edge portions, 27 inner ends, 28 maximum bulging portions, 30 spouts, 31 spouts, 32 caps, 100 convex molds, 101 concave molds.

Second Embodiment
50 pouch container, 51 sheet material, 52 filling portion, 60 upper edge seal portion, 61 lower edge seal portion, 62 side seal portion, 63 edge seal portion, 64 folded seal portion, 65, 66 bent portion, 70 spigot, 71 Spout, 72 Cap, E1, E2 Outer end.

Claims (6)

In a pouch container that is composed of one or a plurality of sheet materials and includes a side seal portion formed by overlapping and joining the sheet materials,
A pouch container, wherein a thickness of at least a part of an outer edge portion of the side seal portion is thinner than a thickness of an inner edge portion of the seal portion. The pouch container according to claim 1,
The side seal portion has a pouch container characterized in that the thickness of the outer end thereof is thinner than the thickness of the inner edge portion of the seal portion. In the pouch container according to claim 1 or 2,
The side seal portion includes a curved portion formed so as to be substantially in contact with the outer end thereof. In the pouch container according to any one of claims 1 to 3,
The side seal part includes a folded seal part formed by folding the sheet material,
A pouch container, wherein the thickness of at least a part of the outer edge portion of the folded seal portion is thinner than the thickness of the inner edge portion of the seal portion. A step of forming a side seal portion by overlapping and joining one or a plurality of sheet materials;
At the time of or after the formation of the side seal portion, a thickness reduction step of making the thickness of at least a part of the outer edge portion of the seal portion thinner than the thickness of the inner edge portion of the seal portion;
A method for manufacturing a pouch container, comprising: In the manufacturing method of the pouch container according to claim 5,
In the thinning step, the outer edge of the side seal portion is embossed to form a curved portion at a position substantially in contact with the outer end of the seal portion, and the thickness of the outer end of the seal portion is set to the thickness of the seal portion. A method for manufacturing a pouch container, wherein the thickness is smaller than the thickness of the inner edge.

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