JP2000335594A - Standing pouch - Google Patents

Abstract

(57) [Problem] To provide a standing pouch that can be manufactured at low cost and can safely and effectively pour out contents. SOLUTION: This standing pouch is a self-standing container having a body portion and a bottom portion, in which a bottom sheet member can be spread and stably upright by filling contents, and has a spout at the bottom portion. The above-mentioned standing pouch in which a trunk portion and a bottom portion are formed by bonding a trunk portion sheet member and a bottom portion sheet member to seal portions of both members. The spout is formed by bending the bottom sheet member from its center line of symmetry, cutting the line sheet symmetrically so as to leave a projection forming the spout, and heat-sealing a seal portion along the cut portion. And the standing pouch having a bottom formed at the same time. The above-mentioned standing pouch, in which a spout is attached by heat bonding with a plastic molded cap sandwiched between two bottom sheet members.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a standing pouch (self-standing bag container) used for hermetically packaging contents having fluidity such as liquids, viscous substances, and powders. The present invention relates to a standing pouch provided with a spout at the bottom so that it can be easily transferred to another container.

[0002]

2. Description of the Related Art A conventional standing pouch is used as a three-dimensional container by giving a soft packaging material such as a plastic film a self-supporting property, and is widely used particularly for liquids and powders. Opening methods for removing the contents from the pouch include "cutting the upper part of the standing pouch", "cutting the corner of the upper seal", and "providing a spout with a cap such as a plastic molded product on the top". and so on.

[0003] However, the method of cutting off the upper part of the standing pouch has a problem that the content easily overflows from the upper part when held by hand, such as when the content is liquid, because the standing pouch is soft. In addition, the method of cutting off the corner of the upper seal portion is less likely to overflow the contents than the above-described method, but since the opening is narrower, the films near the opening are more likely to adhere to each other, and the flow is stable until the end. There is a problem that it is difficult to pour out, and in order to pour out to the end, the container must be pressed out by hand. In addition, all conventional methods have a spout at the top or upper corner, so when pouring a viscous substance, it is necessary to push up the viscous substance accumulated at the bottom while pressing it upwards and squeeze it out. There is.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a standing pouch that can be safely and easily poured out even if the contents are liquid or viscous.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a self-standing container having a body and a bottom, wherein a bottom sheet member can be spread and stably upright by filling contents, and a spout is provided at the bottom. A standing pouch characterized by having. In particular, the present invention relates to the above-mentioned standing pouch, in which a trunk portion and a bottom portion are formed by attaching a seal portion of a trunk sheet member and a bottom sheet member to each other.

In one aspect, the present invention provides a spout that is cut line-symmetrically so that the bottom sheet member is bent from its center line of symmetry so as to leave a projection forming the spout. The present invention relates to the standing pouch, which is formed by heat-sealing a sealing portion along the standing portion and at the same time, a bottom portion is formed. In another aspect, the present invention provides a method in which a spout is sandwiched between two bottom sheet members with a plastic molded cap serving as a spout sandwiched between the two bottom sheet members. The present invention relates to the above-mentioned standing pouch formed by bonding and attaching, and having a bottom portion formed by heat-sealing end sealing portions of two bottom sheet members connected to the cap. By having the above structure, the standing pouch of the present invention can be easily filled with the contents, and after filling, for example, the bottom portion can be expanded and stabilized independently by opening the gusset portion. Can be easily held, and the operation of pouring out is also easy.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The standing pouch having a spout at the bottom of the present invention is not particularly limited in structure as long as it has a body and a bottom, and the bottom can be expanded and erect by filling contents. Instead, for example, the body and the bottom may be formed as an integrated body, or the body and the bottom may be joined to form an integral body. In addition, the shape of the spout and the method of attaching to the bottom are not limited. One method of forming the main body of the standing pouch is that a bottom portion is formed in a gusset form in which a sheet member is folded inward, and it is integrated with a lower end portion of a body member by, for example, heat sealing, and is integrated. The joint is shaped, for example, curved, so that it can be spread by filling the filling. The body member may be formed into a tubular shape by heat sealing the two side edges of the two sheets, or a tubular shape may be used in advance. The spout can be formed at the bottom of the main body, preferably at the center thereof, for example, as described below.

[0008] In one aspect, the spout of the present invention comprises:
In a state where the bottom sheet member is bent from its central symmetry line, it is cut line-symmetrically so as to leave a projection forming a spout,
It is formed by heat-sealing a seal portion along the cut portion. As another mode, the spout is attached by thermally bonding the cap to an end of the two bottom sheet members in a state where a plastic molded cap serving as the spout is sandwiched between the two bottom sheet members. Formed. In the latter case, the spout can be formed by removing the cap. Further, at the tip of the former protrusion forming the spout, a cutting assisting means for cutting in the lateral direction and opening the opening may be provided.

The standing pouch having such a structure is open at the top, and has, at the bottom, a bottom surface composed of a bottom sheet member folded inward, and a trunk sheet member constituting the bottom sheet member and the trunk. It has a heat-sealed leg (a heat-sealed portion at the bottom and body) and a downwardly projecting heat-seal pattern formed at the center of the heat-sealed bottom folded portion. Alternatively, a plastic molded cap may be provided instead of the protruding heat seal pattern. For this reason, even when filling contents such as liquid, after filling from the top like a normal standing pouch, the upper part can be sealed, and the use of the standing pouch after filling the contents is done with the bottom part up By cutting off the tip of the projecting spout provided at the bottom, the spout is opened, and the contents can be poured safely and easily. In the case of a plastic molded cap, the spout is opened by removing the cap, and the cap can be poured in the same manner. In addition, when opening the spout, it is preferable that the bottom of the standing pouch is opened with the bottom thereof facing upward, and that the top of the standing pouch is rolled vertically and held by hand to pour out, from the viewpoint of safe pouring out. .

[0010] The material used for manufacturing the standing pouch of the present invention is a material in which the body member and the bottom member are not integrated but are joined and integrated, that is, the sheet material constituting the body and the bottom is: There is no particular limitation as long as at least one surface has heat sealing properties,
Any of the materials used for known standing pouches can be used, and a suitable material can be freely selected and used according to use conditions such as the type of contents to be packed and the presence or absence of heat treatment after filling. Usually, a laminated sheet or film mainly composed of plastic is used for the standing pouch. As such a plastic sheet, PET laminated with a heat-sealing film such as a polyethylene film and a polypropylene film,
Examples include sheets or films of nylon, ethylene vinyl acetate, polyphenylene oxide resin, acrylic copolymer resin, nitrile copolymer resin, and the like.

Next, a method for manufacturing the standing pouch of the present invention will be described. The difference between the standing pouch of the present invention and the conventional standing pouch is that a heat-sealed fold at the bottom, preferably a downward projecting portion for forming a spout at the center thereof, is provided.
The edges of the protruding portions are heat-sealed. Further, it is also possible to provide a cut-out assisting means at the tip of the protruding portion for cutting and opening in the lateral direction. Further, the spout at the bottom may be formed by thermally bonding a plastic molding cap. The above-mentioned auxiliary means for cutting is not particularly limited, and any auxiliary means for cutting the tip of the protruding portion in the lateral direction and providing an opening may be used. For example, a method of forming a perforation in the cutout portion or providing a cutout can be used. The shapes of the convex spout and the plastic molding cap are not particularly specified, and may be any shape depending on the size and contents of the standing pouch.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below more specifically with reference to the drawings. However, the present invention is not limited to these examples. In different drawings, the same reference numerals are used for parts having the same name. FIG. 1 is a front view showing the configuration of one embodiment of the standing pouch of the present invention. In FIG. 1, a standing pouch 1 is formed in a tubular shape in which a body portion is formed of two sheets 2, and both side edges of the sheet 2 are heat-sealed by a body heat seal portion 3 and an upper portion is opened. The bottom part 4 is formed in a gusset form in which a bottom sheet member 18 having a spout 7 as shown in FIGS. 4 and 5 is folded inward, and the bottom heat seal part 5 is
It is sealed inside the body by a seal pattern that forms a downward curved shape at the seal upper end 6.

FIG. 2 and FIG. 3 show examples of spouts provided at the bottom of the standing pouch of the present invention. In the example of FIG. 2, the bottom spout 7 is formed at the bottom sheet member by the spout mounting heat seal portion 10. In addition, although the auxiliary means 9 for cutting is provided at the tip of the spout 7, it can be omitted. In the example of FIG. 3, the spout 7 of FIG. The plastic molding cap 8 is configured to be thermally bonded by a heat sealing portion 10 for attaching a spout.

FIGS. 4 and 5 show one embodiment of forming and attaching a spout 7 provided on the bottom 4 of the standing pouch of the present invention. FIG. 4 shows the bottom sheet member 1.
In the configuration in which a spout is formed in the cutting line 8 itself, the cutting and removing section 17 is cut and removed in a shape in which the projection 19 which is symmetrical with the folding line 15 of the bottom sheet member is fitted (FIG. 4B). After bending to form the projection 19 (c),
The heat sealing part 10 for attaching the spout is heat-sealed. At this time, the cutout auxiliary means 9 may be formed in the spout 7. Further, the cutting and removing unit 17 may be cut after heat sealing the heat sealing unit 10 for attaching a spout. After heat-sealing the heat-sealing portion 10 for attaching the spout, the spout 7 is folded back so as to sandwich the spout 7 inside by the folding line 16 as shown in FIGS. 4D and 4E to form the bottom 4 of the standing pouch.

Next, FIG. 5 shows a configuration in which a spout is formed by a plastic molding cap 8 and two bottom sheet members 1 are formed.
As shown in FIG. 5 (b), the plastic molding cap 8 is placed on top of the plastic molding cap 8, and then heat-sealed with a heat sealing part 10 for attaching a spout. Glue. After heat-sealing the heat-sealing part 10 for attaching the spout, the bottom part 4 of the folding pouch is folded so as to sandwich the plastic molding cap 8 at the folding line 16.
To form By providing the bottom as described above, the contents can be poured safely and smoothly.

[0016]

As described above, according to the standing pouch according to the present invention, the contents can be easily filled from the upper wide opening regardless of the liquid or the viscous body, and provided at the bottom when used. There is an effect that the contents can be safely and easily poured out from the set spout. In addition, by providing a plastic molding cap, the contents can be repeatedly sealed, and even when used repeatedly, the contents are stored at the bottom by their own weight, so even if the contents are small, it is possible to reach the spout by hand. It can be easily poured without pushing up.

[Brief description of the drawings]

FIG. 1 is a front view showing the configuration of an embodiment of a standing pouch according to the present invention.

FIG. 2 is a partial front view of an embodiment of the present invention in which a spout is formed from a bottom sheet member itself on a bottom sheet member constituting a bottom portion of a standing pouch.

FIG. 3 is a partial front view of another embodiment of the present invention in which a spout is formed by fusing a plastic molding cap on a bottom sheet member constituting a bottom of a standing pouch.

FIG. 4 is an explanatory view of a bottom sheet member processing step for forming the spout of FIG. 2;

FIG. 5 is an explanatory view of a bottom sheet member processing step for forming the spout of FIG. 3;

[Explanation of symbols]

 REFERENCE SIGNS LIST 01 Standing pouch 02 Body constituent film 03 Body heat seal part 04 Bottom part 05 Bottom heat seal part 06 Upper end of curved bottom heat seal part 07 Outlet 08 Plastic molded cap 09 Cutout auxiliary means 10 Outlet attachment Heat seal portion 11 Notch portion of bottom material film 12 Notch portion of bottom material film 13 Leg a 14 Leg b 15 Fold line 16 Fold line 17 Cut-off portion 18 Bottom sheet member 19 Projection

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Fukayuki Tatsui 31-3 Uji Hinojiri, Uji-shi, Kyoto Unitika F-term in Uji Plastics Factory (reference) 3E064 AB23 HM02 HS04

Claims (4)

[Claims] 1. A standing pouch having a body and a bottom, wherein a bottom sheet member can be spread and stably upright by filling contents, and has a spout at the bottom. . 2. The standing pouch according to claim 1, wherein the trunk portion and the bottom portion are formed by laminating a seal portion between the trunk sheet member and the bottom sheet member. 3. The spout is cut line-symmetrically so as to leave a projection forming the spout in a state where the bottom sheet member is bent from the center line of symmetry, and the sealing portion along the cut portion is heat-sealed. 3. The standing pouch according to claim 2, wherein the standing pouch is formed at the same time as forming the bottom. 4. A spout has a plastic molded cap serving as a spout sandwiched between two bottom sheet members, and the cap is attached to the ends of the two bottom sheet members by heat bonding. 3. The standing pouch according to claim 2, wherein the bottom is formed by heat-sealing end sealing portions of two bottom sheet members connected to the cap.