JPH0434731Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a resin pouch with a soft texture that is inexpensive and can be mass-produced for heat or cold insulation.

(Prior art) Conventionally, pouches made of cloth, thick vinyl pouches, etc., have a pouchette with a tightening string inserted through its upper part, a bag body made of a single layer film, and a synthetic resin foam sandwiched between the inner and outer sheets. A bag body formed from a laminated material integrated with is provided.

(Problems to be solved by the invention) Conventional bags made of such cloth or thick bags require a lot of sewing work and are expensive, and bags made of laminated materials containing synthetic resin foam have the disadvantage of Although the bag itself was made of synthetic resin, it had the disadvantage of lacking flexibility. Furthermore, bags made of single-layer film have the disadvantage of lacking heat and cold insulation properties.

This design has a folded bottom, and both edges are melt-cut to form a quadrilateral bag with an upper opening.At the same time, the upper part has a folded part between the front side and the front side, and a folded part between the back side and the back side. forming parallel welded parts at vertically spaced positions, respectively, and cutting both ends of the welded parts to form a bag-shaped part with openings at both ends;
In the resin pouch, in which the pulling portion of the tightening cord inserted through the bag-shaped portion is pulled through the opening, the resin material forming the resin pouch is composed of a polyethylene surface film that maintains independence from each other, and a polyethylene surface film that maintains independence from each other. By using a resin pouch consisting of a back film, the polyethylene front film, and a styrene foam resin sheet interposed between the polyethylene front film and the polyethylene back film, it is possible to create a plastic pouch that is inexpensive, suitable for mass production, and has heat and cold retention properties. The purpose is to provide a resin pouch with a pleasant texture.

(Means for Solving the Problems) The structure of the quadrilateral bag a made of resin film superimposed material is approximately as follows.

A thickness of approximately 0.5 is provided between the transparent polyethylene front film 1 and the transparent polyethylene back film 2.
Form a resin film superimposition with a styrene foam resin sheet 3 of about mm in size, fold the resin film superimposition a in half to form a front surface 4 and a back surface 5, and fold the upper part inward. Then, a front side bent portion 7 and a back side bent portion 8 are formed, and both side edges are cut 9 by melting to form a quadrilateral bag body a with an upward opening.
Slightly below the upper part 13 of the quadrilateral bag body 1 with an upward opening, the front fabric 4 and the front fabric folded part 7 and the back fabric 5 and the back fabric folded part 8 are individually welded in parallel to vertically spaced positions. 10, and cut both ends of the welded part to form a bag-shaped part 11 for string insertion with openings 14 at both ends, and insert an index of the plurality of tightening strings 12 inserted into the bag body part 11. The hanging cord part is attached to the above opening 1.
Tow from 4.

(Function) When the tightening cord 12 is pulled from both sides in the state shown in FIG. 1 in which the upper part 13 is positioned above the bag-like part 11 for string insertion of the openings 14 at both ends, the bag-like part as shown in FIG. 11 converges and at the same time the quadrilateral bag body 1
The upper part 13 of the flower resembles the opening of fan-shaped petals. Further, as shown in FIG. 3, the upper part 13 is folded back outward from the upper edge of the bag-like part 11 for string insertion at both end openings 14, and the tightening string 12 is pulled from both ends of the upper edge folded part. For example, as shown in FIG. 4, the folded piece blooms into a petal shape, and even when the tightening string 12 is suspended, the folded piece does not undergo any distortion.

(Effects) As mentioned above, the resin pouch according to this invention has a polyethylene front film and a polyethylene back film that maintain independence from each other, and a styrene-based polyethylene film interposed between the polyethylene front film and the polyethylene back film. Since it is formed from a foamed resin sheet, it has excellent heat retention and cold retention due to the heat retention and cold retention properties of the styrene foam resin sheet interposed inside and the temperature blocking effect of the air layer interposed between each layer.

In addition, the cushion of the styrene foam resin sheet interposed inside and the air layer between each layer have the effect of softening the shock to the contents inside the resin film pouch.

Furthermore, since slippage occurs between each layer of the styrene foam resin sheet, the front film, and the back film, a pouch with an overall good feel and soft texture can be obtained.

Furthermore, since the styrene foam resin sheet, which is susceptible to tearing, is protected between the front film and the back film, it has excellent shape retention.

The pulling part of the tightening cord inserted into the bag-shaped part is pulled through the opening at the upper part and slightly below the bag-like part, so when this is pulled, the pulling part converges and at the same time the upper part blooms. It becomes a beautiful shaped pouch. Furthermore, since the upper part converges at the lower part, there is an effect of preventing the traction cord from loosening.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a perspective view of a resin film pouch, Fig. 2 is a perspective view showing the state in which the tightening string is fastened, and Fig. 3 shows another state of use. FIG. 4 is a perspective view showing a state in which the tightening string is fastened, FIG. 5 is a sectional view, and FIG. 6 is a partially enlarged sectional view. 1...Front side film, 2...Back side film, 3
...Styrene foam resin sheet, 4...Surface,
5... Back side, 7... Front side bent part, 8... Back side bent part, 9... Fused part, 10... Welded part, 11...
... Bag-shaped part for string insertion, 12 ... Tightening string, 13 ...
Upper part, 14...openings at both ends.

Claims (1)

[Scope of utility model registration request] It has a folded bottom part, and both edges are melted to form a quadrilateral bag with an upward opening.At the same time, a front fabric and a folded part of the front fabric, and a folded part of the back fabric and a folded part of the back fabric are formed at a slightly lower part of the upper part. Welded parts parallel to each other are formed at vertically spaced positions, and both ends of the welded parts are incised to form a pouch-like part with openings at both ends, and the pulling part of the tightening cord inserted through the pouch-like part is passed through the opening. In a resin pouch that is towed, the resin material forming the resin pouch is interposed between a polyethylene front film, a polyethylene back film, and a polyethylene front film and a polyethylene back film, which maintain independence from each other. A resin pouch characterized by being composed of a styrene foam resin sheet interposed therein.