KR100385098B1 - Plastic zipper bag - Google Patents

Abstract

It was invented to provide a zippered plastic pouch with a hole having a strength sufficient to attach the hand strap but not to compromise its waterproofness.

The zippers 20 and 30 are attached to the inside of the opening 14 of the bag body 10 made of the plastic films 10a and 10b to have a sealing structure, and both edges 12 of the bag body 10 are sealed. 12, a hole 15 is formed in the hardened melt / hardened portion 13 after both ends of the zippers 20 and 30 are melted, and the handle strap 40 is attached to the hole 15. It is.

Description

Zippered Plastic Pouch {PLASTIC ZIPPER BAG}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic bag, and more particularly, a plastic in which recesses and convex parts are respectively formed in a body part of a zipper inside an opening of a bag body made of a plastic film. The present invention relates to a plastic bag of a structure in which a first zipper is welded.

In recent years, portable telephones are widely used, but these telephones are not to be strictly wet. Therefore, there is no problem in using in a normal place, but when used in the sea or the water, it is particularly limited to use because care must be taken so as not to get water. This is because it becomes unusable when wet.

Also, if you put your phone in your front pocket while wearing tight clothes in the summer, you may be injured by sweat. In addition, a hand strap must be attached to the mobile phone.

On the other hand, plastic bags of a structure in which a plastic zipper made of recesses and iron parts are welded inside the opening of a pouch body made of a plastic film such as polyethylene are inexpensively mass-produced. The use of plastic pouches ensures that items stored inside are not wet with water. In particular, since the film used as such a pocket has a thickness of about 40 to 200 μm, it is possible not only to operate a button of the telephone on the film even when accommodating a mobile phone, but also to prevent any trouble on the call because of the film. .

However, since the plastic bag is thin and soft, the plastic pouch cannot form a hole for attaching the handle strap to make it difficult to carry the mobile phone. In other words, even if the front and rear film of the pocket is combined only 80 ~ 400㎛ thickness, even if you make a hole there is a possibility that the hole is easily stretched when the hand strap is inserted.

Accordingly, an object of the present invention is to provide a zippered plastic bag having a hole capable of supporting the handle strap with sufficient strength.

1 is a front view showing a state where a mobile phone is put in a plastic bag and a hand strap is attached according to an embodiment of the present invention;

2 is an enlarged view showing the hand strap attaching portion of the plastic bag;

3 is an enlarged view showing a modification of the strap attachment portion;

4 is a cross-sectional view showing one example of a zipper attached to the plastic bag;

Fig. 5 is a sectional view showing another example of a zipper attached to the plastic bag.

(Sign description)

1 ‥‥ plastic bag, 10 ‥‥ body

10a, 10b ‥‥ plastic film, 12 ‥‥ edge,

13 ‥‥ melting / hardening part, 14 ‥‥ opening,

15 ‥‥ holes, 20, 30 ‥‥ zippers,

21, 31 ‥‥ Zipper body, 22, 23, 32 ~ 37 ‥‥ Uneven

40 ‥‥ Hand strap.

The present invention for achieving the above object, in the plastic zipper is formed in the plastic zipper formed in the main body portion of the zipper and the iron portion inside the opening of the bag body made of a plastic film, both sides of the bag body Melting both ends of the zipper at the end edge and hardened to form a hole for attaching the handle strap to the melt / hardened portion.

According to the present invention configured as described above, since the hole through which the strap is sewn is formed in the molten / hardened portion of the plastic film and the zipper and the uneven portion of the zipper, the strap is supported without any problem in terms of strength. I can do it. In particular, in the present invention, it is preferable to use the zipper has a sealing property,

The plastic bag according to the present invention can be completely prevented from getting moisture or water into the inside and can make a call through the film, and is particularly suitable for use as a waterproof bag for mobile phones.

(Actual example)

Hereinafter, an embodiment of a zippered plastic bag according to the present invention will be described with reference to the accompanying drawings.

1 is a plan view showing an embodiment of a plastic bag according to the present invention, the plastic bag 1 of this embodiment is sealed by three sides welding, etc., one transparent plastic film below Fold at the edge 11 to weld the lower edge 11 and both side edges 12, 12, and then cut both side edges 12, 12 to form a bag body (10). The hatched portion in Fig. 1 is the welded portion.

The upper edge of the bag body 10 forms an opening 14, and the inside of the opening 14 is provided with a zipper 20 shown in FIG. 4 or a zipper 30 shown in FIG. 5. . These zippers 20 and 30 are used to be molded by extrusion. The zipper 20 has a structure in which the recessed portions 22 and the convex portions 23 are formed in the base portions 2l and 21, respectively. In addition, the zipper 30 has convex portions 32 and hook portions 33 and 34, hooking grooves 35 and hook portions 36 and 37, which serve as sealing members to base portions 31 and 31. Are each formed.

The zipper 20 is, so to say, small and simple (簡 素 型) can not have a complete sealing function to prevent the degree of water droplets, it is possible to prevent the degree of permeation of sweat or water. On the other hand, the zipper 30 is sold by Showa Polymer Co., Ltd. under the trade name of "High Pack Exeal," which has airtightness and easily opens outside the pouch body 10. It can be done, but it is difficult to open from the inside. Regarding the sealability of the zipper 30, it is almost complete as far as the waterproof function and the airtight function are concerned.

On the other hand, as the zipper, various other than those shown in Figs. 4 and 5 may also be used, for example, a concave-convex portion may be formed in two stages, and a seal type generally called double jacket may be used.

By the way, when manufacturing the bag body 10 before welding both sides 12 and 12 after welding in three directions, the body part 21 of the zipper 20 and 30 to the film 10a and 10b beforehand is cut out. 31) is welded in a diagonal line in portions A and B shown in FIGS. 4 and 5. Then, both ends of the zippers 20 and 30 at both side edges 12 and 12 of the films 20 and 30 are melted by heating or ultrasonically, and then cured by pressing and cooling to melt / cure 13. To be formed.

That is, in this melting / hardening part 13, the film 10a, 10b and the zipper 20, 30 are melt | dissolved together with the gas part 21, 31 and the uneven part 22, 23, or 32-37. As a hardened portion, as shown in Figure 2 will be formed to be widened in the vertical direction slightly than the width of the zipper (20, 30).

The films 10a and 10b are made of polyethylene, for example, and have a thickness of 40 to 200 µm, and the zippers 20 and 30 are made of polyethylene or polypropylene, and the thickness of the base parts 21 and 31 is 150. ˜400 μm. Therefore, the melting / curing portion 13 is a thickness where the melting / hardening portion of the uneven portion 22, 23 or 32 to 37 is added to the thickness to which they are added.

Then, a circular hole 15 is formed in the melting / curing portion 13, and the hand strap 40 is sewn and attached to the hole 15 (see Fig. 2). Here, the melting / curing portion 13 has a thickness as described above and has sufficient strength to support the handle strap 40. In addition, since the hole 15 is formed in the melting / curing portion 13, the internal sealing property of the bag body 10 is not impaired. In addition, since the zippers 20 and 30 are extruded articles, they are inherently harder members than the films, so there is less fear that they will be stretched or broken even if a hole is drilled.

The hole 15 may be simply formed by a drill or a hot needle, or a reinforcing member such as an iron ring may be provided for reinforcement.

In addition, since the relationship between the width | variety of the sealing part of both side edges, and a melting / hardening part may be arbitrarily determined, they may be the same or may differ somewhat. 3 shows an example in which the melting / hardening portion 13 is made wider than the width of the side edge sealing portion.

On the other hand, the zippered plastic bag according to the present invention is not limited to the above-described embodiment, of course, can be modified in various ways within the scope not departing from the gist. In particular, the configuration of the pocket body, the zipper, the handle strap can be arbitrarily configured, and can be used as various waterproof pockets, such as a portable radio player of a transistor radio, a mini disk, a compact disk in addition to a mobile phone.

In addition, in the above embodiment, as shown in Figs. 3 and 4, the upper end of the film remains as the flap portions 10a 'and 10b', but this portion may be cut off.

As described above, the zippered plastic bag 1 according to the present invention is secured by the zippers 20 and 30 and is suitable for use as a waterproof bag of a mobile phone. Of course, not only the buttons and the like can be manipulated through the films 10a and 10b but also no trouble occurs in the call.

Moreover, since the strap 40 can be attached with sufficient strength, it is very convenient to carry around. In addition, the plastic bag (1) can float on the water in a state where the mobile phone is accommodated, so that you can talk while listening to the incoming sound while swimming.

Claims (3)

In a zippered plastic bag made of a plastic film welded to the inside of the opening of the bag body made of plastic film, each of which is formed with recesses or convex portions in the body portion, Both ends of the zippers 20 and 30 are melted at both side edges 12 and 12 of the bag body 10, and then hardened to form a melt / hard part 13. 13) a zippered plastic pouch, characterized in that the handle strap 40 is formed by attaching a hole (15). The zippered plastic bag according to claim 1, wherein the zippers (20, 30) are sealed. The zippered plastic bag according to claim 1 or 2, characterized in that a hand strap (40) is attached to the hole (15).