JP2006219157A - Pouch container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pouch container which can suppress its size smaller in comparison with a bottom gusset type pouch container, and is excellent in self-standing stability. <P>SOLUTION: The pouch container is composed of a container main body 10 formed into a bag-like shape with an external sheet 11 and a gusset sheet 12, and a spout 20 mounted on the container main body 10, and four legs 10A are provided on both side parts on the bottom part of the container main body 10. A side edge seal SS has a cut 10B extending from a point of intersection of an outer edge of the vertical seal part SSV and an outer edge of an inclined seal part LSS of a lower edge seal LS to a position approximately 1-2 mm above a point of intersection of an inner edge of the vertical seal part SSV and an inner edge of the inclined seal part LSS. When an approximately flat bottom part is formed by filling a content in the container main body 10, the outside part of the cut 10B on the vertical seal part SSV is turned to a leg 10A projected downward from the bottom part, and the container main body 10 is held under a standing condition by this leg 10A. <P>COPYRIGHT: (C)2006,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. 6, 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.

  For this reason, as such a small-capacity pouch container, the container body 51 is not the side gusset type pouch container 50, but a gusset from the lower ends of a 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 the pouch container of the type, by dividing the lower side of the side seal part where the side edge of the exterior sheet and the side edge of the gusset sheet are heat-sealed with each other by a longitudinal cut, the cut in the side seal part The pouch container is characterized in that the outer part of the pouch is used as a leg.

  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 as in the case of the bottom gusset type pouch container, and the lower side of the side seal portion is not provided. By dividing by the longitudinal cut, the outer portion of the cut in the side seal portion is used as a leg, so that good self-supporting stability can be ensured.

  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 container main body 10 is provided with four legs 10 </ b> A on both sides thereof.

  As shown in FIG. 3, 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 15 μm thick formed of polyamide. A pair of front and back exterior sheets 11 and 11 having a four-layer structure in which a 100 μm-thick sealant layer formed of a reinforcing layer and polyethylene are sequentially laminated, and folded from the both sides of both exterior sheets 11 and 11 to the left and right Except for the point that the thickness of the sealant layer forming the side gusset portion is 70 μm, it is composed of a pair of left and right gusset sheets 12, 12 having the same structure as the exterior sheet 11, and a pair of front and back exterior sheets 11, 11 And both sides of the pair of left and right gusset sheets 12, 12 are heat-sealed and The lower end portions of the pair of exterior sheets 11 and 11 are formed into a bag shape by heat-sealing each other or the lower end portions of the pair of left and right gusset sheets 12 and 12. 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. 3 indicates a heat seal portion of the container body 10.

  As shown in FIG. 3, the side edge seal SS in which the side edge of the exterior sheet 11 and the side edge of the gusset sheet 12 are heat-sealed with each other includes an inclined seal portion SSS and a vertical seal portion SSV. The lower edge seal LS in which the lower edges and the lower edge of the exterior sheet 11 and the lower edge of the gusset sheet 12 are heat-sealed to each other includes an inclined seal portion LSS and a horizontal seal portion LSH.

  The inclined seal portion SSS of the side edge seal SS, the inclined seal portion LSS of the lower edge seal LS, and the horizontal seal portion LSH are set to have a seal width of about 6 mm, but the vertical seal portion SSV of the side edge seal SS is The seal width is set to about 12 mm, and the seal width is approximately twice that of the inclined seal portions SSS and LSS and the horizontal seal portion LSH. The upper edge seal US in which the upper edges of the outer sheet 11 and the upper edge of the outer sheet 11 and the upper edge of the gusset sheet 12 are heat-sealed has a seal width of about 10 mm.

  From the intersection of the outer edge of the vertical seal portion SSV and the outer edge of the inclined seal portion LSS of the lower edge seal LS, the side edge seal SS is 1 to from the intersection of the inner edge of the vertical seal portion SSV and the inner edge of the inclined seal portion LSS. A cut 10B extending to an upper position of about 2 mm is formed, and as shown in FIGS. 1 and 2A and 2B, a substantially flat bottom is formed by filling the container body 10 with the contents. Then, the outer portion of the cut 10B in the vertical seal portion SSV becomes a leg 10A that protrudes downward from the bottom, and the container body 10 is supported in an upright state by the leg 10A.

  As shown in FIG. 3, the spout 20 is made of polyethylene, polypropylene, or the like, and is opened and closed by a fixing portion 21 attached to the bag-like container body 10 and a screw cap 22 provided on the fixing portion 21. A mouth part that can be a mouthpiece or a spout, and a lead-out part 23 having a cross-shaped cross section that is provided below the fixing part 21 and facilitates the suction of the contents filled in the container body 10. In the state where the lead-out portion 23 is inserted into the container main body 10, the side surface of the fixing portion 21 is heat-sealed to the upper edge portion of the container main body 10 (exterior sheets 11, 11).

  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, it ensures better self-sustained stability compared to a normal side gusset type pouch container. can do. Therefore, it is effective for a small-capacity type pouch container that cannot secure a sufficient weight.

  Further, as described above, the pouch container 1 extends in the vertical direction, which widens the vertical seal portion SSV of the side edge seal SS and divides the vertical seal portion SSV in the lateral direction below the vertical seal portion SSV. By forming the cut 10B, the outer portion of the cut 10B in the vertical seal portion SSV is used as the leg 10A. Therefore, when the container body 10 is bag-made, the four legs 10A can be formed simultaneously. It is possible to efficiently manufacture the pouch container 1 having the four legs 10A.

  In the above-described embodiment, the vertical seal is formed so that the leg 10A having the lower end at the intersection of the outer edge of the vertical seal portion SSV of the side edge seal SS and the outer edge of the inclined seal portion LSS of the lower edge seal LS is formed. Although the length of the part SSV is set, the present invention is not limited to this. For example, like the pouch container 2 shown in FIGS. 4A and 4B, the outer side of the cut 10B in the vertical seal part SSV. The long leg 10A may be formed by extending the portion to the outer edge of the horizontal seal portion LSH in the lower edge seal LS. In this case, as shown in FIG. Since the container body 10 is supported in an upright state so as to be bent in the direction, the self-standing stability of the pouch container 2 is improved.

  Further, in the embodiment described above, the seal width of the inclined seal portion LSS in the lower edge seal LS is set to the same width as the seal width of the horizontal seal portion LSH, but is not limited to this, for example, Like the pouch containers 3 and 4 shown in FIGS. 5 (a) and 5 (b), the inclined seal portion so that the outer edge of the inclined seal portion LSS comes on the extended line of the outer edge of the horizontal seal portion LSH in the lower edge seal LS. It is also possible to enlarge the sealing area of the LSS. Also in this case, the length of the leg 10A can be shortened as shown in FIG. 10A, or the length of the leg 10A can be increased as shown in FIG.

  Moreover, in each embodiment mentioned above, although the cut 10B is extended to the position about 1-2 mm above the intersection of the inner edge of the vertical seal | sticker part SSV and the inner edge of the inclination seal | sticker part LSS, it is not limited to this. As long as it is in the vicinity of the intersection between the inner edge of the vertical seal portion SSV and the inner edge of the inclined seal portion LSS, it may not reach the intersection point between the inner edge of the vertical seal portion SSV and the inner edge of the inclined seal portion LSS.

  Further, by providing one or a plurality of concave and convex ribs (for example, ruled lines) extending in the vertical direction in the leg 10A portion, the strength of the leg 10A portion can be increased, and thus the width of the leg 10A is reduced. It is also possible.

  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. It is a front view which shows the state which folded the pouch container same as the above into flat. (A) is a front view which shows the state which folded the pouch container which is other embodiment flatly, (b) is a side view which shows the standing state of a pouch container same as the above. (A), (b) is a front view which shows the state which folded the pouch container which is other embodiment flatly. 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

1, 2, 3, 4 Pouch container 10 Container body 10A Leg 10B Cut 11 Exterior sheet 12 Gusset sheet 20 Spout 21 Adhering part 22 Screw cap 23 Deriving part SS Side edge seal SSS Inclined seal part SSV Vertical seal part LS Lower edge seal LSS Inclined seal part LSH Horizontal seal part

Claims (1)

In the side gusset type pouch container provided with a pair of left and right gusset sheets which are folded inward from both sides of the pair of front and back exterior sheets and side gusset parts,
By dividing the lower side of the side seal part heat-sealed between the side edge of the exterior sheet and the side edge of the gusset sheet with a vertical cut, the outer part of the cut in the side seal part is used as a leg. A pouch container characterized by being used.

Images