Waterproof, anti-explosion and cutting-resistant high-strength double-layer toothed zipper and method for manufacturing same

Abstract

The invention discloses a waterproof, anti-explosion and cutting-resistant high-strength double-layer toothed zipper and a method for manufacturing the same. The waterproof, anti-explosion and cutting-resistant high-strength double-layer toothed zipper comprises a left double-layer toothed chain belt, a right double-layer toothed chain belt and a zipper puller, the left double-layer toothed chain belt and the right double-layer toothed chain belt are meshed with each other in the left-right direction, an upper zipper chain, a lower zipper chain and a woven belt are sewn to form each double-layer toothed chain belt, and the zipper puller is used for opening and closing the left double-layer toothed chain belt and the right double-layer toothed chain belt. The waterproof, anti-explosion and cutting-resistant high-strength double-layer toothed zipper is characterized in that each woven belt is folded by one step, the zipper chains are respectively sewn at edges of outer surfaces of the upper and lower folded woven belts, and the two folded woven belts are sewn and connected with each other by harnesses. The waterproof, anti-explosion and cutting-resistant high-strength double-layer toothed zipper and the method have the advantages that the zipper is high in zipper chain and woven belt sewing speed, zipper chain and cloth belt connection strength, waterproof, anti-explosion and cutting-resistant performance and transverse strength, and the zipper can be opened and closed easily by the aid of the puller; each single-layer zipper chain is sewn with the corresponding woven belt when the zipper chains are required to be sewn with the woven belts, so that the sewing speed is greatly increased, and needles cannot be broken; and each single-layer zipper chain is sewn with the corresponding single-layer woven belt, and each double-layer zipper chain is sewn with the corresponding woven belt by the corresponding double-fold harness, so that the connection strength is doubled as compared with the traditional zipper.

Description

technical field [0001] The invention relates to a nylon zipper, especially a waterproof, air-tight, explosion-proof and split-proof high-strength double-layer tooth zipper and a manufacturing method thereof. Background technique [0002] In order to improve the connection strength of the single-layer zipper, in recent years, zipper chains have been sewn on the upper and lower sides of the single-layer cloth belt to make a double-layer chain belt (refer to figure 1 ), the upper chain teeth and the lower chain teeth of the left and right chain belts are meshed and connected respectively by increasing the distance between the upper and lower chain plates. However, for this kind of double-layer zipper, during the sewing process of the upper and lower zipper chains and the cloth tape, the sewing needles need to be inserted in the gap between the upper and lower zipper chain coils. The sewing needle must be inserted in the gap between the upper and lower zipper chain coils, and t...

AI Technical Summary

Problems solved by technology

However, for this kind of double-layer zipper, during the sewing process of the upper and lower zipper chains and the cloth tape, the sewing needles need to be inserted in the gap between the upper and lower zipper chain coils. The sewing needle must be inserted into the gap between the upper and lower zipper chain coils, and the sewing speed should not be too fast, otherwise the sewing needle will be broken

In addition, the upper and lower coils of this structure have only one seam to connect with the cloth tape. Therefore, the strength of the connection is poor. After a period of use, the seam is easy to break, and the chain will come off, which will affect the normal use of the zipper.

[0003] In addition, although the inventor of this patent has obtained the patent ZL201120249032.7 double-layer tadpole-shaped sprocket zipper and its zipper puller and ZL201110063400.3 a roller type zipper puller, none of them has the functions of waterproof air-tightness, explosion-proof and anti-split

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