JPS637058Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a portable bag, and more particularly to a portable bag used to store documents, books, and other portable items.

BACKGROUND ART Conventionally, paper bags have been generally used to store and carry documents, etc., but such paper bags have the following drawbacks.

(b) In other words, the bottom of these seed bags is generally formed into a rectangular shape, but the bottom usually has to be formed manually, which makes the work complicated and requires a series of steps. The disadvantage was that it could not be carried out in a vacuum, making it unsuitable for mass production.

(b) Also, since it is made of paper, the opening of the bag is easily deformed.
As a result, there was a drawback that it became difficult to store portable items.

To overcome these drawbacks, portable bags made of synthetic resin are also used; however, synthetic resin bags also lack strength near the opening and may deform, and moreover, they generally do not hold tightly against the sealing piece. As a portable bag, it had a fatal flaw in that the sealing function was inferior because there was no seal. Therefore, portable bags made of synthetic resin were not necessarily put into practical use.

Problem to be solved, technical purpose This invention was devised as an improvement of portable bags made of synthetic resin with the aim of solving all the drawbacks mentioned above. To provide a completely new and useful portable bag which is strong and has a stable sealing function by providing stiffness to the sealing piece.

DISCLOSURE OF THE INVENTION The present invention was constructed to achieve the above-mentioned object, and its structure is such that each bag is attached to the inner side of the upper edge of both pieces of a thermoplastic synthetic resin bag main body having an opening on the upper surface. A pair of reinforcing pieces thicker than the main body are heat welded facing each other, and one of the reinforcing pieces welded to one piece of the bag main body is extended to the upper part of the opening to form a sealing piece. .

A portable bag having such a structure is carried by storing portable items such as documents into the bag body through the opening, and then sealing the opening with a sealing piece.

Effects Since the present invention has the above-mentioned configuration, it has achieved the following remarkable effects.

(b) Reinforcing pieces are heat-welded to the inner sides of the upper edges of both sides of the bag body, ensuring strength near the opening of the bag body. It has the remarkable effect that it never deforms, making it very easy to store documents and other portable items.

(b) A more important point is that since the sealing piece is formed by extending one reinforcing piece, the sealing piece has stiffness,
As a result, the sealing piece has an extremely excellent sealing function, and the sealing operation can be easily performed, which is a great effect.

(c) The effects of (a) and (b) above bring great practical benefits such as further increasing the demand for portable bags made of synthetic resin.

Embodiment Hereinafter, embodiments of the present invention will be described according to an embodiment shown in the drawings.

FIG. 1 is a front view of a portable bag as an example;
FIG. 2 is a sectional view taken along line A--A in FIG. 1.

In FIGS. 1 and 2, reference numeral 1 denotes a bag body made of thermoplastic synthetic resin and having a horizontally oblong rectangular shape from the front, with an opening 2 formed on the top surface and a gusset formed on the bottom 3. Reference numerals 4 and 4' denote a pair of reinforcing pieces made of synthetic paper thicker than the bag body 1, which are heat-welded to the inside of the upper edges of both sides a and b of the bag body 1, and are welded to one side a side. One reinforcing piece 4 is extended upward to form a sealing piece 5. 6
indicates an adhesive tape provided inside the tip of the sealing piece 5.

When using the portable bag constructed as described above, first store portable items such as documents into the bag body 1 through the opening 2, and then close the opening with the sealing piece 5 as shown in FIG. After sealing the section 2, the bag can be carried by attaching the adhesive tape 6 provided on the sealing piece 5 to the outside of the other piece b of the bag body 1, that is, on the opposite side of the other reinforcing piece 4'. becomes.

In this case, since the reinforcing piece 4 is heat-welded to the inside of the upper edge of the bag body 1, the strength of the upper edge of the bag body 1 is guaranteed, and therefore the opening 2 will never be extremely deformed. As a result, the portable items can be stored in the bag body 1 very easily.

Furthermore, since the sealing piece 5 is constructed by extending one reinforcing piece 4, the sealing piece 5 becomes stiff and has an extremely excellent sealing function.As a result, it may be difficult to put it to practical use. This has resulted in the remarkable effect of further increasing the demand for portable bags made of synthetic resin, particularly for portable bags for documents, books, etc.

Further, in this case, a sealing piece 5 formed by extending one reinforcing piece 4 is pasted with an adhesive tape 6 on the opposite side of the other reinforcing piece 4' welded to the other piece b of the bag body 1. In other words, since the adhesive tape 6 is attached by thick reinforcing pieces 4 and 4' as shown in FIG. 3, the sealed state is very stable. It is.

Furthermore, portable items can be easily taken out by peeling off the sealing piece 5 attached with the adhesive tape 6.

In the above embodiment, the reinforcing piece 4 is made of synthetic paper, but is not limited to this, and may be made of a thermoplastic synthetic resin that is thicker than the bag body 1. In short, it only needs to be made of a member that can be thermally welded to the bag body 1 and is thicker than the bag body 1.

Further, in this embodiment, a gusset is formed on the bottom 3 of the bag body 1, but this gusset does not necessarily need to be formed.

Further, in this embodiment, the sealing piece 5 is sealed by pasting an adhesive tape 6, but the means for sealing the sealing piece 5 is not limited to this, and for example, means for fixing the sealing piece 5 using a chuck, a button, etc. It may be.

Furthermore, when welding the reinforcing piece 4' to the bag body 1, as shown in FIG. There is an advantage that dust can be prevented from entering the gap between the reinforcing piece 4' and the bag body 1, and dust can be prevented from adhering to the upper surface of the reinforcing piece 4'.

All other design changes may be made within the scope of the present invention.

[Brief explanation of drawings]

FIG. 1 is a front view of a portable bag according to the present invention. Second
The figure is a sectional view taken along the line A-A in FIG. FIG. 3 is a sectional view of the sealed state. FIG. 4 is an enlarged sectional view of main parts of another embodiment. 1...Bag body, 2...Opening, 4...Reinforcement piece,
5...Sealing piece.

Claims (1)

[Scope of utility model registration request] A pair of reinforcing pieces 4 and 4', which are thicker than the bag body 1, are placed on the inner side of the upper edges of both pieces a and b of a thermoplastic synthetic resin bag body 1 having an opening 2 on the top surface, and heated. Welded and one piece a of the bag body 1
A portable bag characterized in that one reinforcing piece 4 welded to the opening 2 is extended to the upper part of the opening 2 to form a sealing piece 5.