JP2005263260A - Pouch container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pouch container reduced in size as compared with that of a bottom gazette type pouch container and showing a superior self-standing stability. <P>SOLUTION: This pouch container comprises a container body 10 formed into a bag shape by external sheets 11a, 11b and gazette sheets 12, 12, and a spout 20 installed at the container body 10. The bottom part of the container body 10 is formed with a central leg part 10A and both side legs 10B, 10B by recessing lower ends of the external sheets 11a, 11b and the gazette sheets 12, 12 heat sealed to each other. They are inclined in an opposite direction to each other by folding the central leg 10A to its rear side and by folding both side legs 10B, 10B to their front side. Both side legs 10B, 10B are formed by the external sheet 11b and the gazette sheets 12, 12. The heat seal portions of the gazette sheets 12, 12 at the external sheet 11b are formed with ruled lines at the base end of the central leg 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. 8, the gusset sheets 51b are folded inward from the both sides of the 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. Moreover, since the width of the gusset sheet cannot be increased in the pouch container to which the spout is attached, the thickness (swelling) of the pouch container in the state filled with the contents can be increased. This is also one factor that makes it impossible to achieve independence stability.

  In order to make it easier to bend the lower end portion of the exterior sheet 51a, it is conceivable to provide bending means such as cuts and ruled lines in the bent portion of the exterior sheet 51a. In the present situation, the restoring force due to the back cannot be sufficiently suppressed, and in the case of a small-capacity pouch container, sufficient independence cannot be ensured.

  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 is formed 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 the pouch container of the type, the lower edge portion of the heat-sealed exterior sheet is formed with a cut or notch that separates into a central leg portion and both side leg portions, and the central leg portion or the both side legs separated from each other. It is intended to provide a pouch container that can be self-supported by bending one of the parts to the front side and the other to the back side.

  The pair of front and back exterior sheets and the pair of left and right gusset sheets referred to here are not limited to those that are separated and independent, for example, one gusset sheet and the other exterior The exterior sheet and the gusset sheet are preliminarily arranged like one sheet in which the sheet and the other gusset sheet are successively arranged, or one sheet in which the gusset sheets are respectively arranged on both side edges of the one exterior sheet. Also included are those formed by heat-sealing one continuous sheet in a folded state and then punching into a predetermined shape.

  As described above, since the pouch container according to the first aspect of the present invention is a side gusset type, the pouch container is not increased in size as in the bottom gusset type pouch container, and is bent in opposite directions. Since it can be supported by the center leg and both leg parts, even if it is a small capacity type that cannot secure sufficient weight even if it is filled with the contents, it can ensure good self-supporting stability. .

  Hereinafter, embodiments will be described with reference to the drawings. As shown in FIGS. 1 to 3, the pouch container 1 includes a container main body 10 formed in a bag shape by a flexible sheet, and a spout 20 formed by a thermoadhesive resin attached to the container main body 10. At the bottom of the container body 10, a central leg 10A and both side legs 10B and 10B are provided.

  As shown in FIGS. 4A and 4B, the container body 10 has a 12 μm thick base layer formed of polyethylene terephthalate, a 15 μm thick ethylene vinyl alcohol copolymer film, and a 7 μm thick film. A pair of front and back exterior sheets 11a and 11b having a four-layer structure in which a gas barrier layer formed of aluminum foil, a 15 μm thick reinforcing layer formed of polyamide, and a 100 μm thick sealant layer formed of polyethylene are sequentially laminated. And a pair of left and right having the same structure as the exterior sheets 11a and 11b, except that the thickness of the sealant layer forming the left and right side gusset portions that are folded inward from both sides of the exterior sheets 11a and 11b is 70 μm. Gusset sheets 12 and 12, and a pair of front and back exterior sheets 11a and 11b Both side edges and both side edges of the pair of left and right gusset sheets 12, 12 are heat sealed to each other, and the lower ends of the pair of front and back exterior sheets 11a, 11b are connected to each other or the lower ends of the pair of left and right gusset sheets 12, 12. Each part is heat sealed to form a bag. 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. In addition, the shaded display part in the same figure (a), (b) has shown the heat seal part of the container main body 10. FIG.

  Further, as shown in FIGS. 4 (a) and 4 (b), a notch 12a is formed at the upper corner of the gusset sheet 12 in the folded state at the joint edge side, as shown in FIG. In addition, the pair of front and back exterior sheets 11a and 11b are point-sealed (heat-sealed) with each other through the notch 12a. Thus, the notch 12a is formed in the gusset sheet 12 because the container main body 10 when the contents are filled is fixed to the upper and lower ends of the pair of front and back exterior sheets 11a and 11b. This is for maintaining a predetermined shape (see FIGS. 1 and 2).

  Further, the central leg portion 10A and the both side leg portions 10B and 10B are formed at the lower end portions of the exterior sheets 11a and 11b and the gusset sheets 12 and 12, which are heat-sealed with each other, as shown in FIGS. 1 to 3, as shown in FIGS. 1 to 3, the central leg 10A is bent to the back side, and the both side legs 10B and 10B are bent to the front side to incline in opposite directions. is there.

  As for both side leg portions 10B and 10B formed on the outside of the cutout portions C and C, as shown by a one-dot chain line in FIG. 4A, a heat seal portion between the front exterior sheet 11a and the gusset sheets 12 and 12 The lower end corner portion including the portion corresponding to the notches C and C is cut out as a whole, and both side leg portions 10B and 10B are bent toward the exterior sheet 11a side where the lower end corner portion is cut off, that is, the front side. It is easy.

  Further, in the heat seal portion of the backside exterior sheet 11b with the gusset sheets 12, 12, the base end of the central leg portion 10A formed inside the notches C, C as shown in FIG. Indented ruled lines L, L extending from both ends in the width direction to the folding edges of the gusset sheets 12, 12 are formed. Due to the presence of the ruled lines L, L, the central leg 10A , L is easily bent toward the exterior sheet 11b side, that is, the back side.

  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 rod-like body (not shown) provided in the lower part of the fixing portion 21 for facilitating sucking up the contents filled in the container body 10. The side surface of the adhering portion 21 is heat-sealed to the upper edge portion of the container body 10 while being inserted into 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, the container body can be supported by the center leg 10A and the both side legs 10B and 10B inclined in opposite directions, so that the container body is more self-supporting than a general pouch container of the side gusset type. Stability can be ensured. Therefore, it is effective for a small-capacity type pouch container in which sufficient weight cannot be secured even when the contents are filled.

  Further, as described above, the pouch container 1 forms the central leg portion 10A and the both side leg portions 10B and 10B by cutting out the lower end portions of the exterior sheets 11a and 11b and the gusset sheet 12 heat-sealed with each other. Thus, the pouch container 1 having the center leg 10A and the both side legs 10B, 10B can be formed simultaneously with the bag making of the container body 10, and the center leg 10A and the both side legs 10B, 10B can be formed. Can be produced efficiently.

  In the above-described embodiment, the central leg portion 10A and the both side leg portions 10B, 10B are formed by cutting out the lower end portions of the exterior sheets 11a, 11b and the gusset sheet 12 heat-sealed. However, the present invention is not limited to this. For example, as shown in FIGS. 5A and 5B, cuts C1 and C1 can be formed instead of the cutouts C and C. However, when the cut lines C1 and C1 are employed, the center leg portion 10A and the both side leg portions 10B and 10B may be caught with each other when bent in the opposite direction, so the cutout portions C and C may be employed. desirable.

  Moreover, in embodiment mentioned above, by making the whole lower end corner part in the heat seal part of the exterior sheet 11a and the gusset sheets 12 and 12 on the front side, the both side legs 10B and 10B can be easily bent to the front side. However, the present invention is not limited to this, and as shown in FIGS. 6A and 6B, the lower end corner portion in the heat seal portion between the front exterior sheet 11a and the gusset sheets 12 and 12 is entirely formed. The gusset sheet 12 is formed in the same manner as the central leg portion 10A in which only the cutout portion C is formed without cutting and the ruled lines L and L are formed in the heat seal portion with the gusset sheets 12 and 12 in the backside exterior sheet 11b. , 12 are formed with the same ruled lines L1 and L1 at the base end portions of the both side leg portions 10B and 10B in the front side exterior sheet 11a that is heat-sealed. By Rukoto, it is possible to easily bend both side legs 10B, and 10B on the front side.

  Further, in each of the above-described embodiments, the lowermost edge at the inner edge of the heat seal portion can be bent along the lowermost edge at the inner edge of the heat seal portion so that the central leg portion 10A and the both side leg portions 10B and 10B can be bent. The cutout C and the cut C1 extending to the vicinity are formed. However, the present invention is not limited to this. For example, as shown in FIGS. 7A and 7B, the lowermost portion at the inner edge of the heat seal portion Vertical cuts C2 and C2 that do not reach the edge are formed, and ruled lines L2 and L2 are formed at the base end portions of both side leg portions 10B and 10B in the front exterior sheet 11a where the gusset sheets 12 and 12 are heat-sealed. In addition, by forming a ruled line L3 at the base end portion of the central leg portion 10A in the exterior sheet 11b on the back side where the gusset sheets 12, 12 are heat-sealed, Parts 10A and both side legs 10B, 10B may be bent by heat sealing portions.

  Further, the means for facilitating the bending of the center leg 10A and the both side legs 10B and 10B is not limited to the ruled lines as described above, and the center leg 10A and the both side legs 10B and 10B are curved in one direction. An embossed pattern or engraving for facilitating may be applied by heat sealing.

  In the above-described embodiment, the pouch container 1 in which the spout 20 is attached to the bag-shaped container body 10 has been described. However, the present invention is not limited to this, and the present invention is applied to a pouch container without a spout. It goes without saying that it can be done.

It is the perspective view which looked at one embodiment of the pouch container concerning this invention from the front side. It is the perspective view which looked at the pouch container same as the above from the back side. It is a side view which shows a pouch container same as the above. (A) is a front view which shows the container main body which comprises the pouch container same as the above, (b) is a rear view which shows the container main body same as the above. (A) is a partial front view which shows the container main body which comprises the pouch container which is other embodiment, (b) is a partial rear view which shows a container main body same as the above. (A) is a partial front view which shows the container main body which comprises the pouch container which is other embodiment, (b) is a partial rear view which shows a container main body same as the above. (A) is a partial front view which shows the container main body which comprises the pouch container which is other embodiment, (b) is a partial rear view which shows a container main body same as the above. 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 main body 10A Center leg part 10B Both-sides leg part 11a, 11b Exterior sheet 12 Gusset sheet 20 Spout 21 Adhering part 22 Screw cap C Notch part C1, C2 Cut L, L1, L2, L3 Ruled line

Claims (1)

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,
Forming a notch or notch that separates the lower end of the heat-sealed exterior sheet into a central leg and a side leg;
A pouch container that can be self-supported by bending one of the center leg and the both side legs separated from each other on the front side and the other on the back side.

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