JP2005059924A - Pouch container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pouch container, which is made to be small in comparison with a bottom gusset type pouch container and is superior in self-supportive stability. <P>SOLUTION: The pouch container comprises a container body 10, which is composed of outer packaging sheets 11 and gusset sheets 12 and is formed to be a bag shape, and a spout 20 fitted on the container body 10. At the bottom of the container body 10, four legs 10A are formed on both sides. The legs 10A are formed by extending down the lower end of the outer packaging sheets 11 and gusset sheets 12, which are heat sealed together. In forming the bag-shaped container body 10, the seal width (height) at the lower end of the container body 10 is made larger than that of a conventional side gusset type pouch container. Then the lower half of the lower end of mutually heat sealed outer packaging sheets 11 is cut off at the center of the lower end, together with a folding edge at the lower end of the gusset sheets 12 heat sealed together with the outer packaging sheets 11, to form the legs 10A. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pouch container filled with a liquid beverage such as a soft drink or a liquid or a viscous material such as food, pharmaceuticals, or quasi drugs, and more particularly to a pouch container suitable for a small-capacity type.

  For example, when a pouch container is used as a container for filling about 50 cc of nutritional drink, which is a quasi-drug, as shown in FIG. 5, gusset sheets 51b are folded inward from both sides of a pair of front and back exterior sheets 51a. A side gusset type container formed in a bag shape by heat-sealing the peripheral portion of the gusset sheet 51b to the exterior sheet 51a and heat-sealing the upper and lower edges of the exterior sheet 51a. It is conceivable to use a pouch container 50 with a spout in which a spout 52 is attached to the main body 51 in a downsized manner.

  By the way, the pouch container 50 having a side gusset type container body 51 has a bottom formed by bending the lower end portion of the exterior sheet 51a heat-sealed to the back side as shown in FIG. Since the restoring force due to the spring back is always acting on the curved part, the self-supporting stability is generally poor, especially in a small-capacity pouch container that cannot secure sufficient weight to overcome the restoring force due to the spring back. There is a problem that it cannot be displayed in a standing state on a display shelf in a store.

  Therefore, as such a small-capacity pouch container, the container body 51 as described above is not the side gusset type pouch container 50, but a gusset from the lower ends of the pair of front and back exterior sheets 61a as shown in FIG. The sheet 61b is folded inward, the periphery of the gusset sheet 61b is heat-sealed to the exterior sheet 61a, and the upper edge and both side edges of the exterior sheet 61a are heat-sealed to form a bag shape. A bottom gusset type pouch container 60 with a spout having excellent self-standing stability, in which a spout 62 is attached to the container body 61, is employed.

Japanese Patent Laid-Open No. 10-72044 JP 2001-171689 A

  However, the bottom gusset-type pouch container 60 with a spout in which a gusset portion is formed only at the bottom portion of the container body 61 is a side gusset-type pouch container 50 with a spout having a gusset portion formed on both sides of the container body 51. Compared with the side gusset type pouch container 50 having the same capacity, there is a problem that the size of the container main body 61 becomes larger as a whole.

  Therefore, an object of the present invention is to provide a pouch container that can be reduced in size as compared with a bottom gusset type pouch container and that has excellent self-standing stability.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a side gusset comprising a pair of front and back exterior sheets and a pair of left and right gusset sheets that are folded inward from both sides of both exterior sheets to form side gusset portions. In this type of pouch container, a pouch container is provided in which legs are provided at the bottom.

  Moreover, like the pouch container of the invention concerning Claim 2, the said leg is formed by extending the lower end part of the said exterior sheet, or the lower end part of both the said exterior sheet and the said gusset sheet to the downward side. Can do.

  As described above, since the pouch container according to the first aspect of the present invention is a side gusset type, the size does not increase and a leg is provided at the bottom, unlike the bottom gusset type pouch container. Therefore, it is possible to ensure good self-supporting stability.

  Moreover, since the pouch container of the invention concerning Claim 2 can form a leg simultaneously at the time of bag making, it can be manufactured efficiently.

  Hereinafter, embodiments will be described with reference to the drawings. As shown in FIGS. 1 and 2 (a) and 2 (b), the pouch container 1 is formed by a container body 10 formed into a bag shape by a flexible sheet and a thermoadhesive resin attached to the container body 10. The bottom of the container body 10 is provided with four legs 10A on both sides thereof.

  As shown in FIG. 3A, the container body 10 has a 12 μm thick base layer formed of polyethylene terephthalate, a 7 μm thick gas barrier layer formed of aluminum foil, and a thickness of polyamide. A pair of front and back exterior sheets 11 and 11 having a four-layer structure in which a 15 μm thick reinforcing layer and a 100 μm thick sealant layer formed of polyethylene are sequentially laminated, are folded inward from both sides of both exterior sheets 11 and 11. The left and right side gusset portions are formed of a pair of left and right gusset sheets 12 and 12 having the same structure as the exterior sheet 11 except that the thickness of the sealant layer is 70 μm. As shown in FIG. 2, the side edges of the pair of front and back exterior sheets 11, 11 and the side edges of the pair of left and right gusset sheets 12, 12 are mutually While being heat-sealed, the lower end portions of the pair of front and back exterior sheets 11 and 11 are heat-sealed to each other or the lower end portions of the pair of left and right gusset sheets 12 and 12, respectively, thereby forming a bag shape. The container body 10 formed in this way has an upper end opened, but when the spout 20 is attached to the container body 10, the container body 10 is closed by heat sealing the upper edge portion of the container body 10. It has become so. A shaded display portion in FIG. 3B shows a heat seal portion of the container body 10.

  Further, as shown in FIGS. 3 (a) and 3 (b), a notch 12a is formed at the upper corner of the gusset sheet 12 in the folded state at the joint edge side, and FIG. 2 (b). As shown in FIG. 2, the pair of front and back exterior sheets 11 and 11 are point-sealed (heat-sealed) with each other through the notch 12a. In this way, the notch 12a is formed in the gusset sheet 12 because the container body 10 when the contents are filled is fixed by fixing both ends of the upper edge of the pair of front and back exterior sheets 11 and 11 to each other. This is for maintaining a predetermined shape (see FIG. 1).

  As shown in FIGS. 1 to 3, the leg 10 </ b> A is obtained by extending the lower ends of the exterior sheet 11 and the gusset sheet 12 heat-sealed to each other, as shown in FIG. 3 (b). Thus, when forming the bag-shaped container body 10, the seal width (height) W at the lower end of the container body 10 is set larger than that of a normal side gusset type pouch container. The lower half part in the center part of the lower end of a pair of front and back exterior sheets 11 and 11 heat-sealed together with the folding edges at the lower ends of the pair of left and right gusset sheets 12 and 12 to which the pair of exterior sheets 11 and 11 are heat-sealed It is formed by excising. In FIG. 3 (b), a portion to be cut to form the leg 10A is indicated by a one-dot chain line.

  Accordingly, the two legs 10A formed from each gusset sheet 12 are not connected on the folding edge side of the gusset sheet 12, and the lower end edges thereof can be separated from each other, Since the crease line 10a recessed inward is formed at the base end of each leg 10A, as shown in FIGS. 1 and 2 (b), the crease line 10a is bent outward as the starting point. Each leg 10A is unlikely to return to its original state, and the leg 10A is held open.

  The spout 20 is made of polyethylene, polypropylene, or the like, and has a fixing portion 21 attached to the bag-shaped container body 10 and a mouthpiece or spout that can be opened and closed by a screw cap 22 provided on the fixing portion 21. And a lead-out pipe (not shown) provided in the lower part of the fixing portion 21 for sucking up the contents filled in the container main body 10. The lead-out pipe is formed in the container main body 10. In the inserted state, the side surface of the fixing portion 21 is heat-sealed to the upper edge portion of the container body 10.

  As described above, since the pouch-shaped container body 10 is of the side gusset type, the pouch container 1 has an overall size of the container body 10 that is the same as that of the bottom gusset type pouch container. In addition, since the bottom of the container body 10 is provided with four legs 10A for raising the pouch container 1, the container body has better self-sustained stability than a side gusset type pouch container. Can be secured. Therefore, it is effective for a small-capacity type pouch container that cannot secure a sufficient weight.

  In addition, as described above, the pouch container 1 is formed with the four legs 10A by extending the lower ends of the exterior sheet 11 and the gusset sheet 12 heat-sealed to each other downward. The four legs 10A can be formed at the same time when the container body 10 is made, and the pouch container 1 having the four legs 10A can be efficiently manufactured.

  In addition, since the crease lines 10a are formed at the base end portions of the four legs 10A formed by the exterior sheet 11 and the gusset sheet 12 that are heat-sealed with each other, the legs 10A that are once opened outward are the original. It is difficult to return to this state, and better self-supporting stability can be ensured.

  Further, as described above, the pouch container 1 having the container body 10 provided with the legs 10A can be regarded as a standing figure of a human being or an animal (for example, a penguin) in a standing state. By designing the (screw cap 22) etc. in a form close to the head or torso of a human being or an animal, a further sales promotion effect can be obtained.

  In the embodiment described above, the four legs 10A are formed by extending the lower ends of the exterior sheet 11 and the gusset sheet 12 heat-sealed to each other, but the four legs 10A are limited to this. As shown in FIG. 4 (a), only the lower end portion of the exterior sheet 11 is extended downward, and as shown in FIG. 4 (b), the exterior sheet 11 and the gusset sheet 12 are It is also possible to form four legs with only the exterior sheet 11 by heat sealing (the shaded display portion in FIG. 4B indicates the heat sealing portion in the container body 10).

  However, in that case, the lower end portions of the pair of front and back exterior sheets 11 in contact with the sealant layers are not heat-sealed and can be separated from each other. Instead, it is also possible to form a cut at the center in the width direction of the exterior sheet 11.

  In the above-described embodiment, the crease line 10a is formed at the base end portion of the leg 10A so as to keep the leg 10A open to the outside. However, the present invention is not limited to this. When the exterior sheet 11 and the gusset sheet 12 are heat sealed, the exterior sheet 11 may be slightly heat-shrinkable so that the heat-sealed portion curls (curves) naturally. Is possible. In that case, for example, a 12 μm-thick base material layer formed of polyamide or oriented polypropylene, a 15 μm-thick gas barrier layer formed of ethylene-vinyl alcohol copolymer, and a 100 μm-thickness formed of polyethylene. A three-layer exterior sheet in which sealant layers are sequentially laminated, a 12 μm-thick base material layer formed of polyethylene terephthalate, a 15 μm-thick gas barrier layer formed of an ethylene-vinyl alcohol copolymer, and polyethylene What is necessary is just to use combining the gusset sheet | seat of the 3 layer structure in which the 70-micrometer-thick sealant layer formed was laminated | stacked one by one.

  Moreover, in each embodiment mentioned above, although the leg 10A is integrally formed in the container main body 10 with the exterior sheet 11, the exterior sheet 11 and the gusset sheet 12 heat-sealed with each other, it is limited to this. For example, a leg formed of an individual sheet or the like can be fixed to the bottom of the container body.

  Moreover, although each embodiment mentioned above demonstrated the pouch container with which the spout was mounted | worn with the bag-shaped container main body, it is not limited to this, The present invention is applicable also to a pouch container without a spout. Needless to say, it can be done.

It is a perspective view showing one embodiment of a pouch container concerning this invention. (A) is a front view which shows a pouch container same as the above, (b) is a side view which shows a pouch container same as the above. (A) is a partially cutaway front view showing a state before bag making of a container main body constituting the pouch container same as above, and (b) is a front view showing the same container main body. (A) is a partially cutaway front view showing a state before the bag making of a container main body constituting a pouch container according to another embodiment, and (b) is a front view showing the same container main body. It is a perspective view which shows a general side gusset type pouch container. It is a perspective view which shows the conventional small capacity type pouch container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pouch container 10 Container body 10A Leg 10a Crease line 11 Exterior sheet 12 Gusset sheet 20 Spout 21 Adhering part 22 Screw cap

Claims (2)

In the side gusset type pouch container comprising a pair of left and right gusset sheets that are folded inward from both sides of the pair of front and back exterior sheets and the side gusset portions,
A pouch container having a leg at the bottom.   The pouch container according to claim 1, wherein the leg is formed by extending a lower end portion of the exterior sheet or both lower ends of the exterior sheet and the gusset sheet downward.

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