JP2013049461A - Pouch container - Google Patents

Abstract

An object of the present invention is to provide a pouch container capable of suppressing a printing part formed in a part which becomes a bottom of the container in a self-supporting form from coming into contact with a mounting surface and rubbing.
A pouch container 10 includes one or a plurality of sheet members constituting a front surface portion, a back surface portion, and a pair of side surface gusset portions that are folded between the front surface portion and the back surface portion. The pouch container 10 is formed with a lower edge seal portion 21 that joins the lower edges of the sheet material constituting the sheet material, and at least a part of the lower edge seal portion 21 is above the both ends of the lower edge seal portion 21. Is provided. It is preferable that the inner edge 26 of the lower edge seal portion 21 has a convex shape in which the center protrudes upward from both ends.
[Selection] Figure 1

Description

  The present invention relates to a pouch container, and more particularly to a pouch container having a side gusset portion.

  A sheet material constituting a front surface portion, a back surface portion, and a pair of side surface gusset portions folded between the front surface portion and the back surface portion is provided, and a seal portion is formed at the periphery of the sheet material to seal the container internal space Side gazette type pouch containers are known (see, for example, Patent Document 1). Such pouch containers are widely used as containers for beverages such as sports drinks and foods such as ice cream and jelly.

JP 2000-344252 A

  By the way, the pouch container having the above structure is displayed in a stand-alone state on a mounting surface such as a merchandise display shelf at the time of sale at a store, for example. In many cases, the date is printed by a non-impact printer such as an ink jet printer. In this case, there is a problem that the printed portion is rubbed and disappears by contacting the mounting surface.

  The pouch container of the present invention includes one or a plurality of sheet materials constituting a front surface portion, a back surface portion, and a pair of side surface gusset portions folded between the front surface portion and the back surface portion, and constitutes the front surface portion and the back surface portion. In the pouch container in which the lower edge seal portion for joining the lower edges of the sheet material to be formed is formed, at least a part of the lower edge seal portion is provided above both ends of the lower edge seal portion. And

  According to this configuration, the bottom of the container is recessed in a self-supporting form, and a gap is formed between the bottom of the container and the placement surface. Therefore, the printing unit formed on the bottom of the container is less likely to come into contact with the placement surface, and the printing unit can be prevented from being rubbed and thinned against the placement surface.

In the pouch container of the present invention, the lower edge seal portion is formed at a substantially equal position from both side end portions of the pouch container, and the inner edge of the lower edge seal portion has a convex shape with the center protruding larger than both ends. Is preferred.
The printing part is preferably formed at the central part of the bottom of the container. However, according to this configuration, the central part of the bottom of the container becomes easy to be depressed, and the printing part can be further prevented from contacting the placement surface.

In the pouch container of the present invention, it is preferable that the convex shape exhibits an arc shape curved upward.
In this configuration, for example, a deep recess is not formed in only a part of the bottom of the container, but the recess can be formed over a wide range of the bottom of the container. For this reason, even if it is a case where a printing part is formed in the wide range of the bottom of a container, it can suppress that a printing part contacts a mounting surface.

In the pouch container of the present invention, it is preferable that at least a part of the outer edge of the lower edge seal portion has a concave shape recessed upward. In addition, it is particularly preferable that the seal width in the vertical direction of the lower edge seal portion is substantially the same over the width direction of the pouch container.
According to this configuration, since the area of the lower edge seal portion having high rigidity can be reduced, it becomes easier to maintain a state where the bottom of the container is more depressed, and the sheet material folded along the inner edge of the lower edge seal portion is provided. Since the restoring force for returning to the original shape (hereinafter also referred to as “restoring force by springback”) is reduced, the self-supporting stability is further improved.

  According to the pouch container of the present invention, it is possible to suppress the printing portion formed on the portion that becomes the bottom of the container in a self-supporting form from being rubbed against the placement surface.

It is a front view of the pouch container which is embodiment of this invention, Comprising: It is a figure which shows the form before filling with the content. It is a lower part enlarged view of the pouch container shown in FIG. It is a perspective view of the pouch container which is embodiment of this invention, Comprising: It is a figure which shows the form with which the content was filled. It is a front view which shows a mode that the pouch container with which the content which is embodiment of this invention was filled was made to stand on a mounting surface compared with the conventional pouch container. It is a bottom view which shows a mode that the pouch container with which the content which is embodiment of this invention was filled was made to stand on a mounting surface. It is a perspective view which shows a mode that the pouch container with which the content which is embodiment of this invention was filled was made to stand on a mounting surface in the state inclined backward. It is a figure which shows the 1st modification of the pouch container which is embodiment of this invention. It is a figure which shows the 2nd modification of the pouch container which is embodiment of this invention. It is a figure which shows the 3rd modification of the pouch container which is embodiment of this invention. It is a figure which shows the 4th modification of the pouch container which is embodiment of this invention. It is a figure which shows the 5th modification of the pouch container which is embodiment of this invention. It is a figure which shows the 6th modification of the pouch container which is embodiment of this invention. It is a figure which shows the 7th modification of the pouch container which is embodiment of this invention. It is a figure which shows the 8th modification of the pouch container which is embodiment of this invention. It is a front view of the conventional pouch container, Comprising: It is a figure which shows the form before filling the content.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Below, the form which filled the contents and made the pouch container self-supporting is called "self-supporting form." In the self-standing form of the pouch container, the direction along the vertical direction in the front view is the “vertical direction” of the container, the direction in which each sheet material is laminated is the “front and back direction” of the container, and the direction perpendicular to the vertical direction and the front and back direction Is the “width direction” of the container.

The configuration of the pouch container 10 will be described with reference to FIGS.
FIG. 1 shows the pouch container 10 before the contents are filled. FIG. 2 is an enlarged view of the lower part of the pouch container 10 and shows virtual lines α to γ. FIG. 3 shows the pouch container 10 filled with the contents. The pouch container 10 shown in the figure includes one or a plurality of sheet materials that constitute a front surface portion, a back surface portion, and a pair of side surface gusset portions that are folded between the front surface portion and the back surface portion. The pouch container 10 is formed with a lower edge seal portion 21 that joins the lower edges of the sheet material constituting the sheet material, and at least a part of the lower edge seal portion 21 is above the both ends of the lower edge seal portion 21. Is provided.

  The pouch container 10 includes a top sheet 11, a back sheet 12, and a pair of side gusset sheets 13. The top sheet 11 and the back sheet 12 are sheet materials that respectively constitute the front and back portions of the container, and the side gusset sheet 13 is a sheet that forms a side gusset portion that is folded between the front and back portions. It is a material. The side gusset sheet 13 is folded back in a mountain fold toward the inner side of the container by a crease line 14 formed along the vertical direction.

  The pouch container 10 forms a seal portion that joins the edges of each sheet material in a state where the pair of side face gusset sheets 13 are inserted from both sides between the top sheet 11 and the back sheet 12 superimposed on each other. It is the structure which sealed the container internal space filled with a thing. Examples of the contents to be filled include beverages such as sports drinks and foods such as ice cream and jelly, but are not limited thereto.

The top sheet 11 and the back sheet 12 have a substantially hexagonal shape extending slightly longer in the vertical direction. These are shapes in which the lower end corner portion of the substantially rectangular sheet material is cut obliquely to form the cut portion 15. Moreover, although mentioned later in detail, the center part of the width direction of the lower end part of the surface sheet 11 and the back surface sheet 12 is exhibiting the circular arc shape which the outline line depressed upwards.
The pair of side face gusset sheets 13 have the same shape and the same size, and the width is set to about 1/5 to 1/3 of the width of the top sheet 11. The side gusset sheet 13 has a substantially pentagonal shape in which the lower end portion is cut into a substantially V shape in a state where the fold line 14 is developed.

  The pouch container 10 includes an upper edge seal part 20, a lower edge seal part 21, a side edge seal part 22, a side upper edge seal part 23, and a side lower edge seal part 24 as the seal part. Moreover, the adhesion part 25 which joined the outer surfaces of the side face gusset sheet 13 is provided in the container upper end corner | angular part so that the upper end of the side face gusset sheet 13 may not expand | deploy by filling with the contents.

The upper edge seal portion 20 and the lower edge seal portion 21 are formed by directly joining the top sheet 11 and the back sheet 12. However, a spout 31 described later is interposed between the top sheet 11 and the back sheet 12 in a part of the upper edge seal portion 20.
The side edge seal part 22, the side upper edge seal part 23, and the side lower edge seal part 24 are seal parts formed at the periphery of the side gusset sheet 13, and the side gusset sheet 13 and the surface sheet 11 or the side gusset sheet. 13 and the back sheet 12 are joined and formed.

  The pouch container 10 is provided with a plug 30 as a content take-out portion at the center in the width direction of the upper edge. The spigot 30 includes a spout 31 and a cap 32 screwed into the mouth of the spout 31, and the spout 31 is sandwiched between the upper edge of the top sheet 11 and the upper edge of the back sheet 12. It is attached by forming the upper edge seal portion 20. The plug 30 is attached so that the central axis X passes through the center in the width direction of the container.

  The pouch container 10 is formed with a printing portion 40 at a portion that becomes the bottom of the container in a self-supporting form. In the form illustrated in FIG. 1, the printing unit 40 is formed at the center in the width direction at the bottom of the top sheet 11. Examples of display contents of the printing unit 40 include, but are not limited to, the date of manufacture, the expiration date, and the lot number. For example, not only characters but also patterns may be provided on the printing unit 40. The printing unit 40 is usually formed on the outer surface of the top sheet 11 or the like using a non-impact printer such as an ink jet printer. Alternatively, the printing unit 40 may be formed by sticking a tack seal on which the date of manufacture is printed by a non-impact printer.

  When the pouch container 10 is filled with the contents, the top sheet 11 and the back sheet 12 are separated from each other, the side gusset sheet 13 is developed, and in particular, the lower part of the container is swollen. And about 1/4 of the lower side of the top sheet 11 and the back sheet 12 (below the imaginary line γ) is bent so as to wrap around downward to form the bottom of the container. Thus, the self-supporting property of the pouch container 10 is expressed. The contents can be filled from the spout 31.

  Hereinafter, the components of the pouch container 10, particularly the configuration of the lower edge seal portion 21, will be described in further detail.

  The sheet material (the front sheet 11, the back sheet 12, and the side gusset sheet 13) is a sheet-like member that constitutes the wall surface portion of the pouch container 10, and is usually composed 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 such as the upper edge seal portion 20 is usually formed by heat sealing, the sheet material is also required to have heat sealability. 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.

  Each seal portion such as the upper edge seal portion 20 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 is significantly different from the conventional pouch container 300 (see FIG. 15) in the configuration of the lower edge seal portion 21.
The lower edge seal portion 21 is a seal portion formed by directly heat-sealing the lower edges of the topsheet 11 and the backsheet 12, and is formed between the pair of side lower edge seal portions 24. Further, the lower edge seal portion 21 is formed at a substantially equal position from both side end portions of the container, and the center axis X of the plug 30 passes through the center in the width direction of the lower edge seal portion 21.

  At least a part of the lower edge seal portion 21 is provided above both ends of the lower edge seal portion 21. In the form illustrated in FIG. 1, the inner edge 26 of the lower edge seal portion 21 has a convex shape protruding upward. The inner edge 26 protrudes upward as a whole, and has a convex shape with the center protruding larger than both ends. A vertex P at which the protruding length of the convex shape of the inner edge 26 (hereinafter referred to as “inner convex shape”) is maximum is located at the intersection with the central axis X, that is, at the center in the width direction of the container.

  The convex shape of the inner edge of the lower edge seal portion 21 exhibits an arc shape curved upward. More specifically, it exhibits an arc shape that is curved so as to be symmetric with respect to the central axis X. In other words, since the inner edge 26 is a contour line of the lower end portion of the container internal space connecting the fold lines 14 of the pair of side face gusset sheets 13, it can be said that the contour line has an arc shape.

  The maximum protruding length L1 of the inner edge convex shape is preferably about ¼ to ３ of the length L2 from the lower end of the inner edge 26 to the virtual line α. Here, the imaginary line α is a straight line connecting the upper ends of the side lower edge seal portions 24. If the length L1 is set within this range, an appropriate depression 29 is formed on the bottom of the container from the viewpoint of protection of the printing unit 40 and self-supporting property. Note that the longer the length L1, the easier the recess 29 extends to above the container.

  Further, the lower edge seal portion 21 has a concave shape in which at least a part of the outer edge 27 is recessed upward. In the embodiment illustrated in FIG. 1, the vertical seal width of the lower edge seal portion 21 is substantially the same across the width direction of the container. That is, the outer edge 27 of the lower edge seal portion 21 has a concave shape that is recessed so as to be substantially parallel to the inner edge 26. The concave shape of the outer edge 27 (hereinafter referred to as “outer edge concave shape”) has an arc shape that is curved so as to be bilaterally symmetric with respect to the central axis X, and the portion where the depression is maximum is the same as the vertex P. At the intersection with the central axis X. The phrase “substantially parallel” between the inner edge 26 and the outer edge 27 includes a state in which the inner edge 26 and the outer edge 27 can be regarded as being substantially parallel. For example, the deviation in inclination between the tangent line of the inner edge 26 and the tangent line of the outer edge 27 is less than 10 °. Including the state.

  In the pouch container 10, the top sheet 11 and the back sheet 12 are cut along the outer edge 27 having an arc shape, and the central portion in the width direction of the lower end portion of the container has an arc shape in which an outline is recessed upward. In other words, the pouch container 10 has an R-shaped lower edge seal portion 21 formed along the arc-shaped container lower end portion curved upward.

  Further, in the pouch container 10, a concave space 28 is formed in which a portion in contact with both ends of the inner edge 26 is recessed in a substantially V shape in plan view at the lower end portion of the container internal space. The concave space 28 is most depressed at the boundary position between the lower edge seal portion 21 and the side lower edge seal portion 24.

  Next, an example of the manufacturing method of the pouch container 10 provided with the said structure is demonstrated.

  First, a long sheet of a multilayer sheet material (long sheet of a top sheet 11 and a back sheet 12) including a base film layer, a sealant layer, and a gas barrier layer is produced by, for example, dry lamination using an adhesive. To do. Subsequently, the long sheets of the top sheet 11 and the back sheet 12 are overlapped, and the long body of the side gusset sheet 13 folded at the crease line 14 from both ends along the longitudinal direction is inserted. And the both ends along the longitudinal direction of a long body are heat-sealed, and the side edge seal part 22 is formed.

  Subsequently, the sheet material on which the side edge seal portion 22 is formed is cut into individual container sizes using, for example, a die cut roll, and the cut portion 15 and the arc shape are formed at the lower end portion of the container. . And the lower edge seal part 21 and the side lower edge seal part 24 are formed by heat-sealing the lower edge of the sheet material. Note that the sheet material may be melted to form the cut portion 15 and the like simultaneously with these seal portions. The upper edge of the sheet material is heat-sealed with the spout 31 sandwiched therebetween to form the upper edge seal portion 20 and the side upper edge seal portion 23.

  Finally, the container interior space is filled with contents from the spout 31 and a cap 32 is attached to the spout 31. In this way, the pouch container 10 in which the contents are sealed is obtained. When the contents are filled, as described above, about 1/4 of the lower side of the top sheet 11 and the back sheet 12 is bent so as to wrap downward to form the bottom of the container. At this time, a crease line as shown by a virtual line γ including the vertex Q is formed. The pouch container 10 does not require new incidental equipment in its manufacture, and can be easily manufactured using an existing bag making machine.

Next, with reference to FIGS. 4 to 6, the operation and effect of the pouch container 10 will be described in detail while explaining the self-supporting form of the pouch container 10 having the above-described configuration.
FIG. 4 is a front view showing a state in which the pouch container 10 filled with the contents is self-supported on the mounting surface 200 in comparison with the conventional pouch container 300, and FIG. 5 is a pouch shown in FIG. 3 is a bottom view of the container 10. FIG. FIG. 6 is a perspective view showing a state in which the pouch container 10 filled with the contents is made to stand on the placement surface 200 in a state where the pouch container 10 is inclined rearward.

As shown in FIG. 4A, in the self-standing form of the pouch container 10, the bottom of the container is recessed due to the convex shape of the inner edge of the lower edge seal portion 21. A gap S is formed between them. For this reason, it is difficult for the printing unit 40 formed on the bottom portion of the container to come into contact with the mounting surface 200, and the printing unit 40 can be prevented from being rubbed and thinned by the mounting surface 200.
On the other hand, as shown in FIG. 4B, in the self-supporting form of the conventional pouch container 300, the bottom of the container and the mounting surface 200 are in contact with each other without a gap.

As shown in FIG. 5, the depression 29 formed on the bottom of the container is, for example, from the vertex P of the inner edge convex toward the upper side of the top sheet 11, specifically, the vertex of the imaginary line γ that is a crease line. It includes a linear depression formed toward Q, and is formed so as to expand in a substantially triangular shape so as to be symmetrical with respect to the linear depression. Such a substantially triangular shape has, for example, the apex Q of the virtual line γ and both ends of the lower edge seal portion 21 as apexes. And each side lower edge seal part 24 of the surface sheet 11 and its vicinity (for example, the part enclosed by the ellipse) contact the mounting surface 200, and become a leg part.
The container internal space in contact with the apex P is less likely to separate the top sheet 11 and the back sheet 12 compared to the container internal space in contact with both ends of the inner edge convex shape, so the contents are in the container internal space in contact with both ends of the inner edge convex shape. It becomes easy to flow. As a result, a recess 29 is formed in the vicinity of the apex P, and each side lower edge seal portion 24 of the topsheet 11 and its vicinity serve as legs. Further, since the convex shape of the inner edge of the pouch container 10 exhibits an arc shape that is gently curved over the entire width of the lower edge seal portion 21, the wide depression 29 that makes it difficult for the entire printing portion 40 to come into contact with the placement surface 200. Is formed.

  In the self-supporting form of the pouch container 10, a crease line is formed in the vicinity of the lower end of the container and passes through the apex P along the width direction of the container, and the lower part of the crease line is bent, for example, toward the back sheet 12. The position where the crease line is formed is indicated by a virtual line β (see FIGS. 1 and 5). In addition, the dent 29 on the back sheet 12 side where the crease line along the virtual line β is formed is usually smaller than the dent 29 on the top sheet 11 side. Although the restoring force due to the spring back acts on the bent portion, in the pouch container 10, the center portion of the bottom is recessed, and the restoring force due to the spring back acting on the placement surface 200 at the center portion can be reduced. , Can ensure stable independence.

  As shown in FIG. 6, the pouch container 10 can stand by itself stably even when tilted backward. In the pouch container 10, the restoring force due to the springback is reduced at the center of the bottom of the container and exists in a balanced manner on both sides in the width direction. Further, in the pouch container 10, a concave space 28 that is more flexible than the seal portion is formed at the lower end of the container internal space. For this reason, moderate repulsive force exists on both sides in the width direction of the bottom of the container, and the pouch container 10 is stably independent in a state of being slightly inclined rearward. Thereby, for example, the product design such as the product name attached to the top sheet 11 becomes easy to see, and the display property is improved.

The above embodiment can be appropriately changed in design without departing from the object of the present invention.
Hereinafter, a design change example (modification) will be exemplified. In addition, below, the same code | symbol is attached | subjected to the component similar to the said embodiment, and the overlapping description is abbreviate | omitted.

FIG. 7 is a front view of a pouch container 50 according to the first modification, and shows a form before filling the contents.
The pouch container 50 does not have the cut portion 15, and the top sheet 51, the back sheet 52, and the side gusset sheet 53 have a substantially rectangular shape. In the pouch container 50, the area of the side lower edge seal portion 54 is larger than that of the pouch container 10, and an adhesive portion 55 is formed by joining the outer surfaces of the side gusset sheets 53 so that the lower ends of the side gusset sheets 53 do not expand. Is provided.

FIGS. 8-10 is a front view of the pouch containers 60-80 which are the 2nd-4th modification, Comprising: It is a figure which shows the form before being filled with the contents. In the same figure (the same applies to FIGS. 11 to 14 later), only the portion serving as the bottom of the container is shown enlarged.
Each of the pouch containers 60 to 80 has a convex shape in which the vicinity of the central portion of the inner edge of the lower edge seal portion projects locally upward. In the pouch container 60, the inner edge 62 of the inner edge seal portion 61 has an arc shape that curves upward as in the pouch container 10. On the other hand, in the pouch containers 70 and 80, the inner edges 72 and 82 of the inner edge seal portions 71 and 81 both have a non-arc shape. The inner edge 72 is an inverted V-shaped convex shape with a sharp apex, and the inner edge 82 is a convex shape whose upper end is a straight line parallel to the width direction. The pouch containers 60 to 80 are common to the pouch container 10 in that the seal width in the vertical direction of the lower edge seal portion is substantially the same over the width direction of the container.
The self-standing form of the pouch containers 60 to 80 is effective when, for example, the width of the printing unit 40 is small because a large depression is easily formed at the center of the bottom of the container.

FIGS. 11-14 is a front view of the pouch containers 90-120 which are the 5th-8th modification, Comprising: It is a figure which shows the form before being filled with the contents.
As for the pouch containers 90-120, the outline line of the container lower end part is a non-arc shape, and all are the linear form parallel to the width direction of a container. In the pouch container 90, the inner edge 92 and the outer edge 93 of the lower edge seal portion 91 both have an arc shape, and the vertical seal width of the lower edge seal portion 91 is substantially the same over the width direction of the container. In common with the above embodiment. However, it differs from the above embodiment in that it has a non-seal portion 94 left on the outside of the outer edge 93 without being cut off by the topsheet 11 and the backsheet 12. Further, in the pouch container 100, the inner edge 102 of the lower edge seal portion 101 has an arc shape, and the outer edge 103 has a straight line shape that matches the outer shape line. That is, the seal width in the vertical direction of the lower edge seal portion 101 is not substantially the same across the width direction of the container, and the lower edge seal portion 101 has a substantially semicircular shape.

  The lower edge seal portion 111 of the pouch container 110 has a shape in which the seal width in the vertical direction is slightly wider at the center in the width direction of the container. That is, the central portion of the inner edge 112 of the lower edge seal portion 111 projects slightly upward. A depression can be formed in the bottom of the container also by the convex shape of the inner edge protruding in this manner.

  The lower edge seal portion 121 of the pouch container 120 includes a lower end seal portion 122 and a spot seal portion 123. Both the inner edge 124 and the outer edge 125 of the lower end seal portion 122 have a linear shape substantially parallel to the width direction of the container. The spot seal portion 123 is provided at a position spaced upward from the lower end seal portion 122 in the central portion in the width direction of the container. The spot seal portion 123 is in a range of 20 mm or less from the lower end of the container, and the distance from the inner edge 124 of the lower end seal portion 122 is about 1/4 to 1/3 of the length from the inner edge 124 to the virtual line α. It is suitable to be provided at the position. In the pouch container 120, the spot seal portion 123 can form a recess at the bottom of the container.

  In the above description, the pouch container is configured from the top sheet, the back sheet, and the side gusset sheet. However, a form in which one sheet material is bent to form the top surface, the back surface, and the side gusset part. It may be.

  Moreover, in the above, when the outer edge of the lower edge seal portion has a concave shape, the vertical seal width of the lower edge seal portion is illustrated as being substantially the same across the width direction of the container. The seal widths may be different. That is, the outer edge concave shape may be formed at a position that does not correspond to the inner edge convex shape, and the vertical seal width of the lower edge seal portion may not be the same over the width direction of the container.

  DESCRIPTION OF SYMBOLS 10 Pouch container, 11 Top sheet, 12 Back sheet, 13 Side gusset sheet, 14 Crease line, 15 Cut part, 20 Upper edge seal part, 21 Lower edge seal part, 22 Side edge seal part, 23 Side upper edge seal part, 24 side lower edge seal part, 25 adhesive part, 26 inner edge, 27 outer edge, 28 concave space, 29 depression, 30 spout, 31 spout, 32 cap, 40 printing part.

Claims (5)

One or a plurality of sheet materials constituting a front surface portion, a back surface portion, and a pair of side surface gusset portions folded between the front surface portion and the back surface portion, and lower edges of the sheet material constituting the front surface portion and the back surface portion In the pouch container in which the lower edge seal part for joining is formed,
A pouch container, wherein at least a part of the lower edge seal portion is provided above both ends of the lower edge seal portion. The pouch container according to claim 1,
The lower edge seal portion is formed at a substantially equal position from both side ends of the pouch container,
The pouch container is characterized in that the inner edge of the lower edge seal portion has a convex shape with the center projecting greatly upward from both ends thereof. The pouch container according to claim 2,
The pouch container is characterized in that the convex shape exhibits an arc shape curved upward. In the pouch container according to any one of claims 1 to 3,
A pouch container, wherein at least a part of an outer edge of the lower edge seal portion has a concave shape recessed upward. In the pouch container according to any one of claims 1 to 4,
A pouch container characterized in that the seal width in the vertical direction of the lower edge seal portion is substantially the same over the width direction of the pouch container.

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