JP2015107816A - Standing pouch - Google Patents

Abstract

Provided is a standing pouch that can improve independence and is excellent in cost and discardability.
A standing pouch having side seal portions 4 at least on the left and right sides and a gusset portion on a bottom portion, and a wide seal portion 6 is provided continuously to each side seal portion 4. The portion 6 is provided in the upper part of the pouch, and the wide seal portion 6 is not provided with a hole or notch. The wide seal portion 6 includes at least an upper first portion 61 and a lower second portion 62. The inner seal line of the second portion 62 is formed so as to incline from the inside to the outside of the pouch. In the self-supporting state in which the contents are filled, hip folding is suppressed.
[Selection] Figure 1

Description

  The present invention mainly belongs to the technical field of packaging bags for storing and selling liquids, and particularly relates to a standing pouch that is self-supporting in a state where the liquid is filled as a content.

  The above-mentioned standing pouch is formed by sandwiching a bottom film folded in a mountain shape at the bottom of a body film made of a flexible laminated film and heat-sealing the periphery. When the liquid is filled as the contents, the bottom film expands. Conventionally, it has been suitably used as an alternative container for shape retaining containers such as bottles and cartons, or as a refill container for refilling bottles with contents. For example, the following documents are known as standing pouches having excellent independence.

JP 2002-225887 A JP 2002-211589 A

  Although the standing pouches described in the cited documents 1 and 2 are self-supporting after the contents are filled, since the enlarged seal part is provided with a hole, the side part of the pouch is likely to be folded (hereinafter referred to as waist folding). I understood that.

  This invention is made | formed in view of such a background, The place made into the objective is to provide the standing pouch which can suppress a waist break.

  In order to achieve the above object, the standing pouch according to claim 1 is a standing pouch having side seal portions at least on the left and right sides and a gusset portion on the bottom portion, and is connected to each side seal portion. The wide seal portion is provided on the upper portion of the pouch, the wide seal portion is not provided with a hole or a notch, and the wide seal portion is at least connected to the upper first portion and the lower portion. The inner seal line of the second portion is formed so as to incline from the inner side to the outer side of the pouch.

  The standing pouch according to claim 2 is the standing pouch according to claim 1, wherein the inner seal line of the second portion of the wide seal portion has a portion that curves toward the outside of the pouch. It is characterized by being.

  The standing pouch according to claim 3 is the standing pouch according to claim 1 or 2, wherein the inner seal line of the first portion of the wide seal portion is inclined from the outer side to the inner side of the pouch. It is characterized by having.

  Moreover, the standing pouch according to claim 4 is the standing pouch according to any one of claims 1 to 3, further comprising an upper seal portion, and the upper seal portion is folded back toward the bottom. A folded piece is provided, and the folded piece is provided so as to include at least a central portion in the width direction of the upper seal portion.

  The standing pouch of the present invention is provided with a wide seal portion provided continuously to each side seal portion, and the wide seal portion is provided at the upper portion of the pouch, and the wide seal portion is provided with a hole or a notch. However, the wide seal portion is composed of at least an upper first portion and a lower second portion, and an inner seal line of the second portion is formed so as to incline from the inside to the outside of the pouch. Thereby, in the self-supporting state in which the contents are filled, hip folding is suppressed.

It is a top view which shows the standing pouch which concerns on this invention in the state before filling. It is a top view which shows the other example of the standing pouch which concerns on this invention in the state before filling. It is a top view which shows the other example of the standing pouch which concerns on this invention in the state before filling. FIG. 3 is a perspective view showing a state in which a folding piece is provided on the upper seal portion after filling the contents in the standing pouch of FIG. 2 to form an upper seal portion. It is a top view which shows the other example of the standing pouch which concerns on this invention in the state before filling. It is a top view which shows the other example of the standing pouch which concerns on this invention in the state before filling. It is a top view which shows the other example of the standing pouch which concerns on this invention in the state before filling.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  The standing pouch of the present invention is composed of a flexible laminated film, and is sold by filling, for example, liquid food as the contents. The standing pouches A1, A2 and A3 each show the state before filling the contents.

  These standing pouches A1, A2, and A3 are manufactured by combining a bottom film 2 that is folded between two wall films 1 that form a body portion. Further, the bottom portion of the gusset type in which the bottom film 2 is folded in half is provided with a semicircular cutout 2a in the vicinity of the lower ends on both sides, and is folded in two between the two wall film 1 forming the body portion. The bottom film 2 is sandwiched and heat-sealed with a bottom-shaped bottom seal portion 3 and heat-sealed with side seal portions 4 along the left and right edges to form a bag. The left and right side seal portions 4 are respectively formed with opening notches 5 at a predetermined distance from the upper side.

In the standing pouch A1 shown in FIG. 1, a wide seal portion 6 connected to both side seal portions 4 is provided on the upper portion of the pouch as shown in the figure. The wide seal portion 6 includes an upper first portion 61 and a lower second portion 62, and an inner seal line of the second portion 62 is formed so as to incline from the inside to the outside of the pouch. . Further, the wide seal portion 6 is formed so that neither a hole nor a notch is provided. The wide seal portion 6 connected to the side seal portion 4 may be formed at the same time when the side seal portion 4 is heat sealed.

  The first portion 61 may be a straight line or a curved line. Further, like the standing pouch A2 shown in FIG. 2, the inner seal line of the first portion 61 may be provided so as to be inclined from the outer side to the inner side of the pouch. In this case, when filling the contents, it is possible to easily form a V-shaped fold from the top of the pouch toward the inside of the pouch, so that the pouch in the vicinity of the central portion in the width direction of the pouch It is possible to easily suppress vertical folding (hereinafter, middle folding). Moreover, when forming so that it may incline, as shown in FIG. 2, you may provide so that it may have a part which curves toward the inner side of a pouch.

  The second portion 62 may be a straight line or a curved line. However, as shown in FIGS. 1 and 2, the second portion 62 is preferably formed to have a portion that curves toward the outside of the pouch. It is more preferable that the inner seal line of the second portion 62 be curved toward the outside of the pouch in the vicinity of the portion where the inner seal line of the side seal portion 4 is connected. In such a case, it is possible to more easily suppress the hip break.

  The wide seal portion 6 may be provided with a connecting portion 63 between the first portion 61 and the second portion 62, like a standing pouch A3 shown in FIG. The connecting portion 63 may be a straight line or a curved line, or may be a combination of a straight line or a curved line. For example, as shown in FIG. 3, when the connecting portion 63 is formed in a straight line and parallel to the side seal portion 4, the liquid dispensing property can be stabilized.

  Here, the upper part of the pouch refers to a region from the upper end of the pouch to the inner side of the pouch up to ½ of L1 when the length in the height direction of the pouch is L1. The wide seal portion 6 may be provided from the upper end of the pouch. The wide seal portion 6 can be provided at a distance of 1/4 to 1/2 of L1 from the upper end of the pouch. Further, when the length in the width direction of the pouch is L2, the wide seal portion 6 can be provided at a distance of 1/6 to 1/4 of L2 from the side end of the pouch. When the width of the side seal part 4 is w1 and the width of the widest part of the wide seal part 6 is w2, the width w2 of the widest part of the wide seal part 6 is 20 to 40 mm. Is preferable, and it is more preferable to set it as 20-30 mm. The width h of the wide seal portion 6 is preferably 50 to 100 mm, and more preferably 60 to 80 mm.

  The standing pouches A1, A2 and A3 shown in FIGS. 1, 2 and 3 are sent to the filling process in a state where they are bundled together and filled with the contents one by one. Specifically, the upper portion is expanded and filled with the contents, and heat sealing is performed with a predetermined width so as to close the opening to form an upper seal portion with a predetermined width. Through such a filling process, the standing pouches A1, A2, and A3 have an upper seal portion in addition to the bottom seal portion 3 and the left and right side seal portions 4. The wide seal portion 6 is formed so as to overlap with the upper seal portion. In the standing pouches A1, A2 and A3, an upper seal portion planned portion is denoted by reference numeral 71. And when taking out the contents, the wall surface film 1 can be broken and opened by picking the side seal portions 4 on both sides of the left and right opening notches 5 and pulling them to the opposite sides. The unsealing means provided on the upper part of the pouch is not limited to the unsealing notch 5 and may be any means conventionally known.

  After filling the contents of the standing pouches A1, A2 and A3, the upper pouch may be folded back toward the bottom. In the case of forming the folded piece, as illustrated in FIG. 4, the upper seal portion 7 is composed of a base piece 8 and a folded piece 9, and the base piece 8 and the folded piece 9 are connected via a folding line α. The The folded piece 9 is preferably folded so that the angle between the folded piece 9 and the base piece 8 is an acute angle. The folded piece 9 is provided so as to include at least the center portion in the width direction of the upper seal portion 7 and is preferably provided from one end to the other end in the width direction of the upper seal portion 7 as shown in FIG. .

  In the embodiment shown in FIG. 4, the folded piece is provided from one end to the other end in the width direction of the upper seal portion, but the folded piece is within a range that acts to give tension to the wall film. Should just be provided so that the center part of the width direction of an upper seal part may be included at least.

  By providing the folded piece 9 on the upper seal portion 7, the folded piece 9 is stretched to hold the wall film 1 in a self-supporting state filled with the contents, so that it is formed from the upper part of the pouch toward the inside of the pouch. Since it becomes easy to retain the shape of the V-shaped fold, the middle fold can be easily suppressed.

  Standing pouches A4, A5, and A6 in FIGS. 5, 6, and 7 are modifications of the standing pouch A2 described with reference to FIG. 2, and each shows a state before filling the contents. In these drawings, only the shape of the side seal portion 4 is different from that in FIG. 2, and the same components are denoted by the same reference numerals.

  Among them, the standing pouch A4 of FIG. 5 has a side seal portion 4 in which the outer seal line of the side seal portion 4 is linear and the inner seal line of the side seal portion 4 is inclined toward the inside of the pouch. An inclined seal portion 4a is provided. For example, the inclined seal portion 4a is provided between the upper portion of the pouch and the upper end of the bottom portion of the gusset type. The inclined shape of the inclined seal portion 4a may be linear or curved. In FIG. 5, the inclined seal portion 4 a is provided from the upper part to the center part of the pouch and is provided so as to bend toward the inside of the pouch. By providing such an inclined seal portion 4a, it is possible to easily form a form along a V-shaped fold. Moreover, you may provide the inner side seal line of the side part seal part 4 so that it may incline toward the outer side of a pouch from the lower end of the inclination seal | sticker part 4a to the upper end of the bottom part of a gusset type. In FIG. 5, the inner seal line of the side seal portion 4 from the lower end of the inclined seal portion 4a to the upper end of the bottom portion of the gusset type is inclined toward the outside of the pouch and curved toward the inside of the pouch. Is provided.

  On the other hand, in the standing pouch A5 of FIG. 6, the side seal portion 4 has a curved seal portion 4b in which the outer seal line of the side seal portion 4 curves toward the inside of the pouch. For example, the curved seal portion 4b is provided between the upper portion of the pouch and the upper end of the gusset-type bottom portion as shown in the figure. By providing such a curved seal portion 4b, the shape retention of the entire pouch can be improved.

  In the standing pouch A6 of FIG. 7, the side seal portion 4 has an inclined seal portion 4a in which the inner seal line of the side seal portion 4 is inclined toward the inside of the pouch, and the side seal portion. Four outer seal lines have a curved seal portion 4b that curves toward the inside of the pouch. In FIG. 7, the inclined seal portion 4a is provided from the top to the center of the pouch and is provided so as to curve toward the inside of the pouch, and the side seal from the lower end of the inclined seal portion 4a to the upper end of the bottom of the gusset type. The inner seal line of the portion 4 is provided so as to incline toward the outside of the pouch and to bend toward the inside of the pouch, and the curved seal portion 4b of the side seal portion 4 extends from the top of the pouch to the upper end of the gusset-type bottom portion. It is provided over.

  The standing pouch of the present invention is not limited to the configuration in which the two wall surface films forming the body and the bottom film folded in two are combined, and may be composed of a single film. In that case, the bottom seal portion may or may not be formed. Thus, in the form which comprises a standing pouch with one film, after filling the content from the upper part, after forming and sealing an upper seal part, a folding piece is formed.

  In the standing pouch of the present invention, the width w1 of the side seal portion 4 is preferably 7 mm or more, and more preferably 10 mm or more. When the width w1 of the side seal portion 4 is 10 mm or more, the self-supporting property can be improved even for retort use. In the case of retort use, the film constituting the standing pouch can be a laminated film in which a base material layer, a barrier layer, and a sealant layer are laminated in order from the outside. For example, PET, aluminum foil in order from the outside. A laminated film in which CPP is laminated can be used.

  The standing pouch of the present invention is not limited to the embodiment described above, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

  The standing pouch of the present invention is preferably used mainly for storing and selling liquids, but can also be used for storing powders, granules and the like that behave like liquids. .

A1, A2, A3, A4, A5, A6 Standing pouch 1 Wall film 2 Bottom film 2a Notch 3 Bottom seal part 4 Side seal part 4a Inclined seal part 4b Curved seal part 5 Opening notch 6 Wide seal part 61 Wide seal First part of the part 62 Second part of the wide seal part 63 Connection part of the wide seal part 7 Upper seal part 8 Base piece 9 Folding piece α Fold line L1 Length in the height direction of the pouch L2 Length in the width direction of the pouch h Wide seal part height w1 Side seal part width w2 Wide seal part widest part width W W1 and w2 combined width

Claims (4)

  A standing pouch having side seal portions at least on the left and right sides and a gusset portion on the bottom, and a wide seal portion is provided continuously to each side seal portion, and the wide seal portion is provided on an upper portion of the pouch. The wide seal portion is not provided with a hole or notch, the wide seal portion is composed of at least an upper first portion and a lower second portion, and the inner seal line of the second portion is a pouch. A standing pouch formed so as to be inclined from the inside toward the outside. The standing pouch according to claim 1, wherein the inner seal line of the second portion of the wide seal portion is formed to have a portion that curves toward the outside of the pouch.
  The standing pouch according to claim 1 or 2, wherein an inner seal line of the first portion of the wide seal portion is formed so as to be inclined inward from the outside of the pouch. Furthermore, it has an upper seal part, it has a folded piece which turned the upper seal part toward the bottom part, and this folded piece is provided so that the center part of the width direction of an upper seal part may be included at least. The standing pouch according to any one of claims 1 to 3.

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