JP2021001020A - Bag having cleavage prevention mechanism - Google Patents

Abstract

To provide a bag in which a notch existing below the bag can solve the problem of tearing the bag.SOLUTION: A bag 1 having a handle part 3 and a bottom seal 5 comprises first notches 7a and 7b extending from a lower end of the bag toward an upper end of the bag 1, and second notches 9a and 9b to prevent the first notches 7a and 7b cleaved, in a region from the bottom seal 5 to the lower end. The second notches 9a and 9b are cuts that come into contact with the first notches 7a and 7b or are located above the first notches 7a and 7b.SELECTED DRAWING: Figure 1

Description

The present invention relates to a bag. More specifically, the present invention relates to a bag having an anti-cleavage mechanism.

For example, Japanese Patent Application Laid-Open No. 8-80952 describes a hand-held bag. This bag is a gusset-folded plastic bag. In other words, this bag is used to form a handle by forming a bottom seal and a handle seal on the plastic that is stored in a valley-folded state on both sides and extends in the longitudinal direction. After making the cut, the bag is formed by cutting between the bottom seal and the handle seal and separating each bag.

Japanese Unexamined Patent Publication No. 8-80952

When a bag is manufactured by the above manufacturing method, a notch for forming a handle may exist beyond the lower end of the bag. There is a problem that the bag is torn due to this notch. Therefore, the invention described herein is intended to provide a bag in which the notch present below the bag can eliminate the problem of opening the bag.

One aspect described herein is to provide a new notch in the direction of travel of the notch to prevent the notch from cleaving so that the notch advances to the upper portion of the bag. Based on the finding that it can be effectively prevented.

By providing a new notch in the traveling direction of the notch to prevent the notch from cleaving, it is possible to effectively prevent the above-mentioned notch from advancing to the upper portion of the bag.

FIG. 1 is a conceptual diagram for explaining the bag of the present invention. FIG. 2 is a conceptual diagram showing an example of a bag having a U-shape without a tongue piece and the upper portion of the bag portion being cut. FIG. 3 is a conceptual diagram for explaining the cut portion.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to the forms described below, but also includes those modified from the following forms to the extent apparent to those skilled in the art.

FIG. 1 is a conceptual diagram for explaining the bag of the present invention. As shown in FIG. 1, the present invention relates to a bag. An example of a bag is a handbag. However, the present invention is not limited to handbags, but also includes flat bags such as garbage bags, standard bags, and kitchen bags. The handbag is also called a handbag, a handbag, a plastic shopping bag, a fashion bag, and a loop bag with a string-shaped handle. The main material for handbags and flat bags is resin (plastic) or paper. The handbag is a bag that can carry luggage by storing the luggage in the main body and gripping the grip. Particularly preferred bags are those made of plastic (eg, polyethylene, polypropylene, PET, nylon, biodegradable plastic). A preferred example of a bag is a bag in which a plurality of folded bags are stored in one storage container and used for bag supplies that are taken out one by one. Since the bag itself is known, it can be manufactured by a known method.

The bag 1 has a handle portion 3 and a bottom seal 5. The handle portion 3 is a portion for the user to carry the bag by passing his / her hand through this portion. As described above, for example, the bottom seal 5 and the handle seal are formed in a folded state so that both side surfaces are valley-folded inward with respect to the continuous film, and the handle 3 and the tongue piece are formed. It has a shape corresponding to the above and a U-shape without a tongue piece, and is formed by cutting the upper part of each bag part. FIG. 2 is a conceptual diagram showing an example of a bag having a U-shape without a tongue piece and the upper portion of the bag portion being cut.

The bottom seal 5 is, for example, a portion fused by heat so that the lower part of the bag does not open. On the other hand, even if there is a seal portion other than the handle portion seal on the upper portion of each bag, the upper portion of each bag can form an opening because it is cut when the handle portion and the tongue piece are formed. This makes it possible to insert various objects from the top of each bag.

The bag 1 has first notches 7a and 7b extending from the lower end of the bag toward the upper end of the bag 1 in the region from the bottom seal 5 to the lower end (the region from the lower end to the bottom seal). As described above, the first cuts 7a and 7b go beyond the cut surface for cutting a continuous bag when the corresponding parts are cut in an attempt to form a handle or a tongue piece. ， A notch has occurred. If this notch does not exceed the cut surface, it will be difficult to remove the cut piece cut to form the handle or tongue piece from the bag. For this reason, it is usually designed so that the first cuts 7a and 7b are intentionally generated. The position of the first notch is usually the position corresponding to the inner side of both handles 3. The length of the first notch is adjusted so that, for example, the first notches 7a and 7b are long enough to fit in the portion from the bottom of the bag 1 to the bottom seal 5. An example of the length of the first cuts 7a and 7b is 0.1 mm or more and 3 cm or less, 0.5 mm or more and 1 cm or less, or 0.5 mm or more and 5 mm or less.

FIG. 3 is a conceptual diagram for explaining the cut portion. Let d be the distance from the lower end of the bag to the lower end of the bottom seal 5, and let L be the distance from the lower end of the bag to the upper end of the first notch. Then, L is, for example, 0.1d or more and 0.9d or less, 0.2d or more and 0.8d or less, 0.3d or more and 0.7d or less, or 0.4d or more and 0.6d or less. Good.

The bag 1 has second cuts 9a, 9b to prevent the first cuts 7a, 7b from cleaving. An example of the second cuts 9a, 9b is a cut that is in contact with the first cuts 7a, 7b or is above the first cuts 7a, 7b. Here, the upward direction is the opposite direction of the bottom of the bag, and is the direction from the bottom of the bag toward the handle. The first notch exists so as to block the direction of travel upward of the first notch. The second cuts 9a and 9b may be, for example, linear cuts existing at positions perpendicular to the first cuts 7a and 7b. The second cuts 9a and 9b may be wavy, arc-shaped or chevron-shaped cuts. An example of the length of the second cuts 9a and 9b is 0.1 mm or more and 3 cm or less, 0.5 mm or more and 1 cm or less, or 0.5 mm or more and 5 mm or less.

FIG. 3A is a conceptual diagram showing a first cut portion and a second cut portion in contact with each other. As shown in FIG. 1, the first cut portion and the second cut portion may be separated from each other. In any case, it is preferable that a part of the second cut is present in the traveling direction from the lower end to the upper end of the first cut. The first notch may not be straight, may be slanted, or may be curved. FIG. 3B is a conceptual diagram showing that the second notch is a chevron notch. FIG. 3C is a conceptual diagram showing a second notch having an arc shape. In FIG. 3C, the arc is convex upward. With such a shape, the belief can be effectively prevented when the first incision progresses. FIG. 3D is a conceptual diagram showing an example in which a plurality of second notches exist.

In order to manufacture this bag, when manufacturing a plastic shopping bag or the like by a usual method, the blade for forming a handbag or a tongue piece may include a blade corresponding to the second notch.

The present invention can be used in the bag manufacturing industry.

1 Bag 3 Handle 5 Bottom seal 7a, 7b 1st notch 9a, 9b 2nd notch

Claims (6)

A bag (1) having a handle (3) and a bottom seal (5).
The bag (1) has a first notch (7a, 7b) extending from the lower end of the bag toward the upper end of the bag (1) in the region from the bottom seal (5) to the lower end. A bag having a second notch (9a, 9b) to prevent the first notch (7a, 7b) from cleaving. The bag according to claim 1.
The second notch (9a, 9b) is a notch that is in contact with the first notch (7a, 7b) or is above the first notch (7a, 7b). The bag according to claim 2.
The second notch (9a, 9b) is a linear notch that exists at a position perpendicular to the first notch (7a, 7b). The bag according to claim 2.
The second notch (9a, 9b) is a wavy, arc or chevron notch, bag. The bag according to claim 1.
A bag used for bag supplies in which a plurality of folded bags are stored in one storage container and taken out one by one. The bag according to claim 1, which is a carrying bag.

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