JPH0531073Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a plastic carrier bag with a wide opening.

[Prior Art] Because plastic carrier bags are simple and convenient, they are very widely used in supermarkets and the like to take home when selling products, and this manufacturing industry has formed a huge market.

As one of these plastic carrier bags, a very distinctive plastic carrier bag was produced in 1983.
This is proposed in Publication No. 39342. Although this bag has a complicated structure, it is very easy to manufacture, and before use,
The carrying part film is folded back and folded in the upper part of the bag body, and this carrying part film is folded back and folded, and the feature is that this carrying part film can be pulled out and used. It is preferred and widely used because it is rectangular and compact, and the carrying portion is very strong when carrying heavy items.

As a bag similar to the one proposed here,
As shown in FIG. 6, the hand portion films 2, 2 are attached to the outside of the openings 5, 5, and as shown in FIG. 5, the hand portion films 2, 2 are attached to the inside of the openings 5, 5. There are two types of things that can be considered.

These carrier bags, like general plastic film carrier bags, have the disadvantage that the openings are not wide enough, making it inconvenient when storing items.

[Problems to be Solved] The purpose of the present invention is to provide a carry-on bag that has a wider opening and makes it easier to put in and take out items without impairing the strength of the bag described in the above-mentioned publication.

[Means for Solving the Problem] The inventor of the present invention has studied in detail the structure of the carrying bag described in the above-mentioned publication, and has found that the film 13 in the inverted triangular part outside the end where the carrying part is attached contributes to the strength of the carrying bag. and the inverted triangular film 13.
The present invention was developed based on the fact that the opening becomes very wide when the opening is removed.

That is, the present invention provides a carrying bag which has two carrying film tapes connected to the front and back bag films at the upper opening of the bag body which is composed of two rectangular thermoplastic plastic films on the front and back sides. , the two carrying bag films 2, 2 are folded and extended inwardly or outwardly from the upper edges of the bag openings 5, 5 on both the front and back surfaces, respectively, and the central portions of the carrying bag films 2, 2 are folded inwardly or outwardly. The handbag film 2 is separated from the upper edges of the openings 5, 5 and spread downwardly at the left and right upper corners of the front and back openings 5, 5, respectively, so that the handbag film 2 is attached to the openings 5, 5. ，
2 is fixed thereto, and a triangular portion of a rectangular film is cut off at the cutout lines 6, 6 diagonally above the fused diagonal lines 4, 4 to form a carrier bag.

[Example] The present invention will be explained in detail with reference to drawings of an example. In the plastic carrier bag shown in Fig. 1, two rectangular films 1, 1 on the front and back sides are integrally connected via a bottom part 7, and the left and right side edges have side edge welded parts 3,
3 to form a bag portion. The bag films 1, 1 used here are not only horizontally long rectangles as shown in the figure, but also vertically long rectangles and squares can be used. Handle portion films 2, 2 extend from the opening portion films 5, 5 on both the front and back surfaces and are bent inward at the upper edge of the bag body.

The holding portion films 2, 2 and the opening portion films 5, 5 are separated by a notch 10 in the upper center of the openings 5, 5, and the bag is suspended by inserting a finger into the notch 10. be able to. The width of the cutout portion 10 can be appropriately selected depending on the form of the bag.

At the welding diagonal line parts 4, 4 that extend below the left and right sides of the upper portions of the openings 5, 5, the front and back openings 5, 5
The hand portion films 2, 2 and the opening portion films 5, 5 are respectively fused and fixed as a pair. The angle of the diagonally fixed fused diagonal portions 4, 4 can be freely selected, but from a mechanical point of view it is preferably 45 degrees. Depending on the weight of the bag, the length of the fused diagonal lines 4, 4 can be increased. The positions of the welding hatched parts 4, 4 can be appropriately selected depending on the form of the bag as well as the width of the cutout part 10. That is, if the distance between the left and right fused diagonal lines 4, 4 is widened, the handle film 2,
2 becomes longer and when the interval is shortened, the length of the hand portion films 2, 2 becomes shorter accordingly. This interval is determined by the shape of the bag body, the handle film 2,
The selection should be made according to the width of 2. In the case of the present invention, it is often desirable to provide the fused diagonal lines 4, 4 at the upper part of the openings 5, 5 as close to both corners as possible from the viewpoint of the appearance of the bag.

In this example, the triangular portion 13 diagonally above the fused diagonal line portions 4, 4 of the carrying bag of the shape shown in FIG.
It has the structure shown in the figure.

As a result, as shown in the usage diagram of FIG. 3, the left and right ends 11, 11 of the opening are cut below the upper edge of the bag, so that the opening can be opened very widely.

Further, in the case of this embodiment, since the cutting line of the triangular portion 13 is wave-shaped, it was possible to form the decorative film piece 12 in the opening as shown in the usage diagram of FIG.

The separation of the triangular parts according to the present invention can also be applied to the type shown in FIG. As a result, the bag will look like the one shown in Figure 4, and the opening will also be wider.

In the carrying bag of this embodiment, a gusset fold is also made at the bottom part 7, and two films, the bottom inner film and the bottom outer film, are fixed at the square bottom welding part 9, respectively, to the bottom part 7 of the bag body. can be made into a square bottom shape. Although the square bottom structure of this embodiment is constructed using a known method, it can be operated in exactly the same manner as the manufacturing process of the handbag, so it is a bottom structure that is particularly suitable for the plastic handbag of the present invention.

The carrying bag of the present invention is produced by the process of continuously manufacturing a known carrying bag from a long inflation film by the method described in the above-mentioned publication, and at the same time,
This can be done by cutting off the triangular portions mentioned above.

[Effects of the invention] The plastic carrier bag of the present invention maintains the strength of the one described in the publication, has a wider opening and is more convenient to use, and it is also possible to add decorative touches to the opening. It has advantages that are preferred by consumers.

[Brief explanation of the drawing]

Fig. 1 is a front view of a carrying bag according to an embodiment of the present invention, Fig. 2 is a longitudinal cross-section thereof, Fig. 3 is a perspective view showing its use condition, and Fig. 4 is a front view of a carrying bag according to an embodiment of the present invention. FIG. 5 is a perspective view of the embodiment in use; FIG.
FIG. 6 is a perspective view of the carrying bag in use before the triangular film is cut out. The symbols in the diagram are 1...Bag film, 2...Handbag film, 3...Side edge welded part, 4...Welded hatched area, 5...Opening, 6...Tear line, 7... …
Bottom, 8... Bottom film, 9... Fused part for square bottom, 10... Notched part for handbag, 11... Ends of left and right openings, 12... Decorative film, 13... Triangular cut-out film.

Claims (1)

[Scope of utility model registration request] A carrying bag having two hand film tapes connected to the front and back bag films at the upper opening of the bag body made up of two rectangular thermoplastic plastic films on the front and back sides. The part films 2, 2 are folded back and extended inwardly or outwardly from the upper edges of the bag openings 5, 5 on both the front and back sides, respectively, and the hand parts films 2, 2
The central part of the openings 5, 5 is separated from the upper edges of the openings 5, 5, and the openings 5, 5 are fused by diagonal lines 4, 4 which spread downward at the left and right upper corners of the front and back openings 5, 5, respectively.
The handheld film 2, 2 is fixed thereon, and at the cutout lines 6, 6 diagonally above the welding diagonal lines 4, 4,
A carrier bag made by cutting out the triangular part of a rectangular film.