JPH09110075A - Packing bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent content offsets to the bottom of a bag even if a tray is omitted by covering a first film formed by laminating and integrating a plurality of a different kind of films with a slitted second film as an outer film. SOLUTION: A film easy to curl and low in stickness is laminated to and integrated with a film not easy to curl and high in stiffness to a single film. Next, semicircular slits 4 having a circular arc shape is provided to the film integrally and notched films 4' show a tongue shape and naturally warped on either one of both surface of the film to uniformly protrude on the same surface. The notched pieces 4' is warped to become protruding states and hooked with content to prevent that content falls on the bottom or offset even if the bag is vertical. These notched pieces function as a cushion material to protect a fragile commodity. A separately formed outer film is thermally bonded to a film 5 having a notch 4 to complete a package. Therefore, an offset prevent tray is not required.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to hail, delicacy,
The present invention relates to loose-packed products such as snacks and paste, vegetables, and packaging bags for daily sundries packed in small bags, and more particularly to a packaging bag in which the bag itself has a tray function without using a tray.

[0002]

2. Description of the Related Art A tray made of synthetic resin is put in a packaging bag for a relatively fragile product such as hail, delicacy, snacks, and glue, and the appearance of the displayed product is adjusted. There is. Make sure that the tray has an uneven pattern at the time of molding so that the product will not be caught in the recessed part and the bag will move during transportation or the contents will be biased to the bottom of the bag when displayed vertically and will not be unsightly. It has become.

[0003]

The tray is made separately from the bag body (hereinafter referred to as the exterior). Therefore, the material cost and the molding cost are required in addition to the outer packaging, and further, an elaborate process of putting the contents with the tray in the outer packaging is required. All of these are reflected in manufacturing costs.

In addition, in recent years, from the viewpoint of pollution problems and environmental protection, strict conditions have come to be put on the material of the packaging itself, but such a request is made from mere morals of the manufacturer, the Product Liability Law and the packaging recycling. It began to develop into legal sanctions such as the law.

In particular, the Recycling Law obliges the trader to collect trays. The collection of the tray requires sorting of the tray and the exterior, which is a burden on the consumer. In any case, the problem of product packaging places a heavy burden on manufacturers. Nevertheless, it is difficult to abolish the tray from the standpoint of not compromising the product value.

[0006]

Therefore, the present invention is intended to give the bag itself the same functions and effects as the tray without using the tray. For this reason, the present invention is characterized in that the first film, which is formed by laminating and integrating a plurality of different films, is provided with the notch, and the second film is closed by the exterior film. The film may be different in hardness and softness, and the outer periphery of the exterior film is heat-bonded, and one surface thereof is combined with the film 5 either linearly, dot-shaped or planarly, or in a combination thereof. Heat bond to and integrate.

Since the notch of the notch naturally warps on one side of the first film and becomes uniformly convex on the same surface, when the contents are put on it, the notch is caught by the notch, even if it is a bag. Even if the product moves during transportation or is held in the vertical direction for display, it will not fall into the bottom of the bag or will be biased and will not be unsightly as a product package. The notch also acts as a cushioning material, protecting particularly fragile items.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The bag according to the present invention is manufactured by three steps. First, the first step will be described. FIG.
In the above, the film 1 is a so-called strong film that does not easily curl. Made of polypropylene or polyester. The film 2 is a film made of unstretched nylon, polyethylene or the like, which has a weak elasticity and is easily curled. Like this, two films 1 and 2
Is a foreign film. The number of sheets is not limited to two, but in any case, they are laminated and integrated into a single film 3. An adhesive is applied to the film 1 by an appropriate method, and the solvent of the adhesive is evaporated in a drying process while applying tension, and then the film 2 is laminated and integrated to form a film 3.

The process of FIG. 1 is merely an example. In addition to this method, the film is supplied from one or a plurality of extruders, and a different film is supplied from another one or a plurality of sheet feeding devices in the meantime. The composite film 3 may be obtained by stacking and integrating these while supplying. The method for producing such a synthetic film or sheet is a conventional method, and its detailed description is omitted.

In the second step, as shown in FIG. 2, a semicircular cut 4 having an arc-shaped cut 4 is formed in the film 3.
Is inserted. The notch 4'has a tongue shape, and as shown in FIG. 4, one of the film 3 is naturally warped on one side to be uniformly convex on the same side. Laminate a foreign film here
There is a reason for combining them into a single film 3. The shape of the cut 4 can be selected from various shapes such as a petal shape, a triangle, and a quadrangle other than the semicircular shape. However, a simple line (slit) having no specific shape may be provided in the width direction. The point is that the cut pieces 4'can be convex on the same surface of the film and preferably give a design change to the packaging. It is possible to prevent the content from being caught by the cut pieces 4'being warped and convex so as to fall to the bottom even when the bag is placed vertically and to be biased or accumulated. It also acts as a cushioning material and protects fragile products. The film 3 provided with the notches 4 is hereinafter referred to as a film 5.

The third step is a step of thermally bonding the film 5 and the separately formed exterior film 6 to complete a packaging bag. First, the film 5 is placed between two exterior films 6 in a state in which the product is attached to the side where the cut piece 4'is convex, and the outer periphery of the film 6 is heat-sealed and sealed. The two outer films 6 may be used by combining two single-leaf films or by folding one single film in two. The thermal adhesion between the exterior film 6 and the film 5 may be linear, dot-shaped (circular, star-shaped, etc.) or planar. In the example of FIG. 3, the linear thermal bonding part 7 is shown.

As described above, the packaging bag according to the present invention includes the film 3 in which a plurality of different films are laminated and integrated,
It will be composed of a total of four or more films of the exterior film 6 made into two pieces by folding or stacking, etc., but the finished bag is different in appearance from the conventional bag made of two front and back films. There is no place.

[0013]

EFFECTS OF THE INVENTION It is possible to prevent the contents from shifting to the bottom of the bag by fastening the contents with the notch 4'of the film 3 without using a tray. Since the tray is not used, the cost and labor required for the toilet can be saved, and the inconvenience of collecting the tray can be eliminated. Since the cut piece 4'is highly flexible, it also serves as a cushioning material when the contents are fragile such as rice crackers, rice crackers, and glue. The film 5 formed by laminating a plurality of sheets is strong by itself, but since it is further adhered and integrated with the exterior film 6, it also functions as a core material similarly to the case where the tray is used.

[Brief description of the drawings]

FIG. 1 is a process drawing schematically showing an example of a method of forming a film 3.

FIG. 2 is a plan view of a film 5 provided with a notch 4.

FIG. 3 is a plan view schematically showing a state in which the film 5 is wrapped with an exterior film 6 and the outer periphery is closed.

FIG. 4 is a partially omitted cross-sectional view of FIG.

[Explanation of symbols]

1 first film 2 second film 3 different from first film 3 third film 1 in which films 1 and 2 are laminated and integrated 4 notch 4'notch piece 5 film 6 with notch 6 exterior film 7 Heat bonded part

Claims (3)

[Claims] 1. A packaging bag, characterized in that a film 5 in which a plurality of dissimilar films are laminated and integrated and a cut 4 is provided in a film 3 is closed by an exterior film 6. 2. The packaging bag according to claim 1, wherein the different films have different hardness and softness. 3. The outer film 6 is heat-bonded to the outer periphery thereof, and one surface thereof is heat-bonded to one of a linear shape, a dot shape, or a surface shape, or a combination thereof to be integrated. The packaging bag according to claim 1.