JP2995658B1 - Synthetic resin rectangular bag - Google Patents

Abstract

An object of the present invention is to position male and female chucks provided in an upper opening along an upper side edge when contents are stored.
An object of the present invention is to provide a rectangular parallelepiped bag made of synthetic resin in which a considerable amount of printing base can be provided on the entire upper surface of the bag. In a synthetic resin rectangular parallelepiped bag having a base having a substantial width at the bottom and an upper opening folded and folded into a substantially V-shape, the V-shaped opening and the side of the bag are provided. When the parts are heat-welded, a non-heat-welding material is interposed between one of the valleys of the V-shaped opening and the side surface of the bag connected to the valleys, so that they are manufactured without heat welding. It is characterized by the following.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin rectangular parallelepiped bag whose upper opening is freely openable and closable as required, and in which a considerable amount of printing can be performed on the entire upper surface of the bag.

[0002]

2. Description of the Related Art Conventionally, a rectangular parallelepiped bag made of a synthetic resin having a fixed bottom width has no special fastening structure at an upper opening portion. In this case, since the container is always in an open state, when the contents are put in the bag, problems such as a decrease in the cool-preserving effect and mixing of various dusts into the bag occur. In view of such a problem, a technique of providing a synthetic resin male / female chuck in a synthetic resin handbag having such a shape is known from Japanese Utility Model Application No. 9-9705.

[0003]

The synthetic resin handbag according to the above-mentioned prior art has a structure in which an upper opening is folded into an inverted M shape and a synthetic resin chuck is provided at a central protruding edge. . However, in the automatic production process of such a synthetic resin handbag by a bag making machine, the belt handle, the upper opening, and the side of the bag are fused uniformly to the left and right, and when the bag is expanded, that is, the contents are put in the bag. ,
When the entire shape of the bag is box-shaped, the chuck of the upper opening is positioned at the center of the upper surface of the bag. In such a case, the problems of the conventional example, that is, the deterioration of the cooling effect and the mixing of dust can be completely removed, but the upper surface of the bag is cut off by the chuck at the center. By the way, this kind of rectangular parallelepiped bag made of synthetic resin, which becomes a box shape with the contents put therein, generally stores diapers, sanitary items, etc., and when this is displayed at a store, the product name, product description, etc. on the top of the bag It is desirable to print various types of information on the product. In addition, since these commodities having a considerable width or height are often stacked side by side as a display method, the upper surface of the bag is always seen by the buyer. Therefore, if the chuck is located at the center of the upper surface of the bag, printing cannot be performed on the relevant portion including the chuck and its periphery, and the area that can be printed will be significantly reduced, and printing will not be separated into right and left. And the advertising effect and aesthetics of the product itself are impaired. In this regard, it is extremely important to secure a printing space on the outer surface of the product packaging in view of the dramatic increase in the amount of printing applied to the product today when the Product Liability Act was enforced. In addition, the centrally located chuck loosens its tension as the bag expands, resulting in the chuck itself undulating. In this case, the upper surface of the bag does not become flat, and both ends of the chuck protrude left and right, which has a problem in appearance and hinders the opening / closing operation of the chuck.

The present invention has been made in view of the above problems, and has as its object to position male and female chucks provided in an upper opening along an upper surface side edge when contents are to be stored. Thus, a rectangular parallelepiped bag made of synthetic resin, which can provide a considerable amount of printing space on the entire upper surface of the bag, is provided.

[0005]

In order to achieve the above object, the synthetic resin rectangular parallelepiped bag according to the present invention according to the first aspect has a bottom side folded down to have a considerable width at the bottom, and an upper opening substantially at the bottom. In a V-shaped synthetic resin rectangular parallelepiped bag having male and female chucks at the folding ends, when the V-shaped opening and the side surface of the bag are heat-welded, one of the valleys of the V-shaped opening is It is characterized in that it is manufactured without interposing a non-thermal welding material between the valley portion and the side surface portion of the bag, and without performing thermal welding to these. Further, the synthetic resin rectangular parallelepiped bag according to the present invention described in claim 2 has a bottom side folded down to have a considerable width at the bottom, an upper opening section folded up into an inverted M shape, and a center protruding end side cut out, and male and female chucks cut out. In the synthetic resin rectangular parallelepiped bag having, when the inverted M-shaped upper opening and the bag side are thermally welded, one valley of the inverted M-shaped opening and the side of the bag connected to the valley are provided. It is characterized in that it is manufactured without interposing a non-heat-welding material between the parts and without performing heat-sealing on these.

Accordingly, when the bag is expanded, that is, when an object is placed, one of the valleys of the unopened upper opening extends, so that the chuck is not the central portion of the upper surface of the bag but the opening folded portion. And the side of the bag are integrally welded to each other at the side edge of the upper surface of the bag. Therefore, since the bag is flat and has no obstacle, it is possible to secure a printing space on the entire upper surface of the bag. When opening the chuck, it is sufficient to pinch the upper surface, and when closing the chuck, it is sufficient to press the chuck along the side edge, which facilitates opening and closing operations.

[0007]

Embodiments of the present invention will be described below. As shown in the side view of FIG. 6, according to the first aspect of the present invention, the upper end of the facing synthetic resin material is folded into a substantially V-shape to form the upper opening 1. Then, a synthetic resin male / female chuck C is welded to the folding protruding edge. On the other hand, in the present invention described in claim 2 shown in FIGS. 4 and 5, the upper end of the facing synthetic resin material is folded into an inverted M-shape to form the upper opening 1A. Then, after opening the inverted M-shaped central protruding end side, a male / female chuck C made of synthetic resin is provided at that location by, for example, a thermal welding method. The bottom is also folded so as to form a bag bottom having a considerable width, so that when the articles are put, they are formed in a rectangular parallelepiped shape as shown in FIGS. Further, for example, it is conceivable to weld the U-shaped hand strap O to the upper edge region of the bag side surface. In addition, in the automatic production process by the bag making machine including the welding of the U-shaped belt pattern O, the substantially V-shaped opening 1 or the inverted M-shaped upper opening 1A.
And the bag side surface 2 are simultaneously and integrally fixed by heat welding. And in the synthetic resin rectangular parallelepiped bag of the present invention,
In the substantially V-shaped opening 1 or the inverted M-shaped opening 1A, a non-heat-welding material is interposed between one of the valleys and the side surface of the bag connected to the valley so that the relevant portions are not welded. To manufacture. By making the bag in this manner, when the bag is expanded, that is, when the container is put into a rectangular parallelepiped shape, one of the valleys of the opening that is not welded extends, for example, as shown in FIGS. 1 to 3. , The chuck C is positioned on the side edge of the upper surface of the bag. Thus, unlike a synthetic resin handbag in which the chuck is positioned at the center, printing can be performed on the entire upper surface of the bag.

[0008]

Since the present invention is configured as described above, it has the following effects. Since the zipper is positioned on the side edge of the bag, printing space can be secured on most of the top surface,
It is possible to provide a synthetic resin rectangular parallelepiped bag excellent in aesthetic appearance. Since the opening and closing of the chuck are facilitated, it is possible to provide a synthetic resin rectangular parallelepiped bag which is excellent in the convenience of taking in and out of the contents.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment showing a state where the present invention has become a rectangular parallelepiped.

FIG. 2 is a top view of one embodiment showing a state in which the present invention has a rectangular parallelepiped shape.

FIG. 3 is a partial cross-sectional perspective view showing a configuration of a chuck portion and an opening according to an embodiment of the present invention.

FIG. 4 is a side view showing a state in which one opening of one embodiment of the present invention is extended.

FIG. 5 is a side view showing a folded state of one embodiment of the present invention.

FIG. 6 is a side view of one embodiment of the present invention.

FIG. 7 is a side view of one embodiment showing a state in which the present invention has become a rectangular parallelepiped;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 V-shaped opening 1A M-shaped opening 2 Bag side surface C male and female chuck O U-shaped belt handle

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65D 30/16 B65D 30/20 B65D 33/25 A45C 11/00 A45C 3/04 A45C 13/10 B65D 81/38 B65D 33 / 08

Claims (2)

(57) [Claims] 1. A synthetic resin rectangular parallelepiped bag having a bottom portion folded in and having a substantial width at the bottom, an upper opening 1 folded into a substantially V-shape, and a male and female chuck C at a joint end.
When heat-welding the V-shaped opening 1 and the bag side surface 2, a non-heat-welding material is inserted between one valley of the V-shaped opening 1 and the bag side 2 connected to the valley. A rectangular parallelepiped bag made of synthetic resin, characterized in that they are manufactured without heat welding. 2. A rectangular parallelepiped bag made of synthetic resin having a bottom having a width equivalent to the bottom, a top opening 1A being folded into an inverted M shape, and a central protruding end being cut and male and female chucks C being provided. When heat-welding the letter-shaped opening 1A and the bag side part 2, a non-heat-welding material is placed between one of the valleys of the inverted M-shaped opening 1A and the bag side part connected to the valley. A rectangular parallelepiped bag made of a synthetic resin, which is manufactured without heat welding to these.