JPH10129689A - Synthetic resin spouted bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rigidly and safely integrate a synthetic resin sheet bag and a spout in a synthetic resin spouted bag. SOLUTION: In a spouted bag comprising a base of a synthetic resin spout 9 held between opposite rims 8',8' of a synthetic resin sheet bag 8 wherein the base is heat-welded between the opposite rims 8',8', the spout 9 has a cap 2 on a cylindrical ejection port 1, rectangular vertical cores 3 in a direction of a diameter and a center line (c) symmetrically on both outer sides of the base of the ejection port 1, thin vertical folds 4, 4 are provided at left and right ends of the vertical cores 3, 3, a plurality of lateral folds 6 are provided symmetrically fore-and-aft and right-and-left via respective distances 5 on upper and lower ends of the left and right rectangular vertical cores 3, 3 and their middle positions, the lateral folds 6 are inclined from fore-and-aft outer peripheries of the cylindrical ejection port 1 toward base ends of the left and right vertical folds 4, 4 so that an outer rim may be approximately rhombic, and an air reservoir space 7 is provided with the vertical cores 3, 3 and an outer periphery of the ejection port 1 as a bottom by the respective distances 5 of the lateral folds 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spout bag in which a spout with a cap made of a synthetic resin is attached to a synthetic resin sheet bag containing foods or cosmetics having fluidity or soft viscosity.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 5, 6 and 7, a long and thin substantially rhombic plate is formed on the left and right, and a pouring cylinder is provided upward at the center thereof, and along the front and rear edges of the rhombic plate. A hanging plate is provided, vertical folds are provided at the right and left abutting ends of the hanging plate, a plurality of low horizontal stripes are provided on the outer surface of the hanging plate, a rhombic opening is formed by the lower end of the hanging plate, and between the opposing hanging plates. A base plate of the spout is formed by interposing two partition plates perpendicular to the diagonal line in the elongated direction on the left and right sides, and the base is heated and sandwiched between the outer peripheral facing surfaces of the synthetic resin sheet, and the above-mentioned horizontal strips are placed on the outer peripheral facing surface of the sheet. Was to be welded.

[0003] Such a spout requires a high temperature or a long time heating in order to obtain a reliable seal because the entire base portion is a welded area of the synthetic resin sheet, so that the welded sheet has a poor appearance with wrinkles. There is a problem that a spout base is obtained.

That is, when the inner surface of the facing synthetic resin sheet is heat-welded to the entire surface of both the hanging plate and the vertical fold of the spout, since the horizontal stripe formed on the hanging plate is low, the entire surface of the hanging plate and the inner surface of the synthetic resin sheet are not welded. The air pockets or wrinkles are formed between them, and the air pools or wrinkles form leakage paths for the contents, making it difficult to seal sufficiently, resulting in defective products and low product yield.

[0005] Further, the contents remain in the inside of the rhombus hanging plate, causing a problem in hygiene and uneconomical.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a sheet is welded at a low temperature by reducing a welding area between a base portion of a spout sandwiched between outer peripheral abutting edges of a bag and heat-welded and a sheet welded to the base portion. To prevent leakage between the sheet and the base of the spout, thereby obtaining a spout base with good appearance without wrinkles, and the contents of the bag entering the base of the spout. An object of the present invention is to obtain a synthetic resin spout bag that is hygienic, economical, and leak-free without remaining.

[0007]

According to the present invention, there is provided a spout formed by sandwiching a base of a synthetic resin spout between opposed edges of a synthetic resin sheet bag and heat-sealing the base between the opposed edges. In the bag, the spout has a cap at a cylindrical spout, and symmetrically provided a rectangular vertical center in a diametric direction and a center line direction on both outer sides of a base of the cylindrical spout,
Thin vertical folds are provided at the left and right ends of the vertical core, a plurality of horizontal folds are provided symmetrically in the front-rear and left-right directions between the upper and lower ends of the left and right rectangular vertical cores and an intermediate portion therebetween, and the horizontal fold is formed into a cylindrical spout. The front and rear outer peripheral portions are inclined toward the base ends of the left and right vertical folds in a substantially rhombic shape, and an air reservoir space having a vertical core and a cylindrical spout outer periphery as a bottom surface is provided by the mutual interval of the horizontal folds. Composed of synthetic resin spout bags.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A spiral 10 is formed on the upper outer periphery of a cylindrical spout 1 made of a thermoplastic synthetic resin, and a cap 2 is screwed into the spiral 10. And the rectangular vertical cores 3 in the direction of the center line c of the spout 1 are provided symmetrically with respect to the center line c.

The left and right ends of the vertical cores 3, 3 are provided with longitudinal folds 4, 4 or vertical fins slightly thinner than the vertical cores 3, 3.
A plurality of (four) plate-like lateral folds 6, 6 are symmetrically arranged at the upper and lower ends of the left and right rectangular vertical cores 3, 3 and the middle thereof with a mutual interval 5 from the spout 1 symmetrically around the center line c. The horizontal folds 6, 6 are fixedly provided outside the vertical cores 3, 3, and the outer rims 6 and 6 are inclined from the front and rear outer circumferences of the spout 1 toward the base ends of the left and right vertical folds 4 and 4 in a substantially rhombic shape. And are formed integrally.

In this way, the air gap groove-shaped space 7 having the vertical cores 3, 3 and the outer periphery of the cylindrical spout 1 as the bottom surface is formed by the mutual spacing 5 of the upper and lower horizontal folds 6, 6.

The opposite edge 8 ′ of the synthetic resin sheet bag 8,
The diamond-shaped base of the spout 1 is interposed in the left-right direction between the spouts 8 'and the heating pieces 11, 11 are brought into contact with each other from the outside of the opposing edges 8', 8 'as shown in FIG. Can be welded to the upper and lower edges and the middle folds 6, 6, 6, 6 therebetween, and then when the heating pieces 11, 11 are retracted to their original positions, the opposite edges 8 ', 8' ′ Are substantially rhombic folds 6, 6, 6, 6 as shown in FIGS.
Weld to the outer edge of Since the outer edge of each fold 6 forms a thin vertical surface, it is welded to the opposing edges 8 ', 8' in a vertical plane,
The trapped air is pushed into the deep air reservoir groove-shaped space 7 and does not bite into the vertical peripheral surface of the lateral fold 6. Further, in the above welding, since the horizontal folds 6 are hard and thin plates, the vertical peripheral surface and the opposing edges 8 ', 8' are easily melted and integrated, and have excellent sealing properties.

The lateral folds 6 are rhombic and have thin vertical folds 4 at their ends.
There is no danger that the opposing edges 8 ', 8' will be peeled off at the left and right vertical folds 4, 4 by integrating and melting between the 8 '.

Reference numeral 12 in the figure denotes a skirt of the cap 2, and reference numeral 13 denotes a flange provided on the spout 1.

[0014]

As described above, according to the present invention, when the base portion of the synthetic resin spout is sandwiched and welded to the opposite edge of the synthetic resin sheet bag, the peripheral surfaces of the plurality of substantially rhombic lateral folds at the base portion are welded to the sheet bag and the bite is formed. The trapped air enters the space between the horizontal folds, and the outer peripheral surface of the horizontal fold and the opposing edge have the effect of being securely welded without forming wrinkles.

A plurality of lateral folds are formed in a rectangular vertical core provided on the left and right of the spout in a groove shape through a space, and are formed substantially symmetrically in front and rear and left and right, and thin vertical folds are provided on the right and left ends of the diamond. Therefore, the opposing edge and the left and right ends of the horizontal fold are integrated, and not only a robust synthetic resin spout bag is obtained, but also a horizontal fold is provided at the lower end of the rectangular vertical core, and a bag is provided in the base of the spout. Sanitary with no risk of contents entering.

[Brief description of the drawings]

FIG. 1 is a front view of a synthetic resin spout bag of the present invention in a partially peeled state.

FIG. 2 is a plan view of a welded state along the line AA in FIG. 1;

FIG. 3 is a partial longitudinal sectional view taken along the line BB of FIG. 1;

FIG. 4 is a longitudinal sectional view of a welded state along line CC in FIG. 2;

FIG. 5 is a front view of a conventional spout.

FIG. 6 is a bottom view of FIG. 5;

FIG. 7 is a longitudinal sectional view taken along the line DD in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical pouring spout 2 Cap c Center line 3 Rectangular vertical core 4 Vertical fold 5 Mutual interval 6 Horizontal fold 7 Air pool space 9 Synthetic resin spout

Claims (1)

[Claims] 1. A spout bag formed by sandwiching a base of a synthetic resin spout between opposed edges of a synthetic resin sheet bag and heat-sealing the base between the opposed edges, wherein the spout has a cap at a cylindrical spout. And, a rectangular vertical core in the diametric direction and the center line direction is provided symmetrically on both outer sides of the base of the cylindrical spout, and thin vertical folds are provided on the left and right ends of the vertical core, and the upper and lower ends of the left and right rectangular vertical cores are provided. A plurality of horizontal folds are provided symmetrically in the middle between them in the front-rear and left-right directions, and the horizontal folds are inclined from the front and rear outer peripheral parts of the cylindrical spout toward the base ends of the left and right vertical folds in a substantially rhombic shape. A synthetic resin spout bag provided with an air reservoir space having a vertical core and an outer periphery of a cylindrical spout as a bottom surface according to a mutual interval between horizontal folds.