Manufacturing Method of Waterproof Coil Zipper

Abstract

a manufacturing method of waterproof coil zipper includes preparing a coil zipper, extruding a melted polymer material to fill a gap between two teeth sets and an interspace between two tapes, and to cover surfaces of the two tapes, cooling the polymer material to integrally form an anti-permeating body filled in the gap and a waterproof layer covering the surfaces of the two tapes, and cutting the anti-permeating body by a cutting tool. Accordingly, complex steps and low efficiency in manufacture caused by conventional manufacturing method are thus improved.

What is claimed is: 
     
         1 . A manufacturing method of waterproof coil zipper, comprising:
 preparing a coil zipper including two tapes and two teeth sets, wherein the two tapes are spaced from each other to define an interspace therebetween, wherein each of the two tapes has a first surface and a second surface opposite to the first surface, the second surface of each of the two tapes connects with a respective one of the two teeth sets, and the two teeth sets engage with each other;   extruding a melted polymer material to fill a gap between the two teeth sets and the interspace between the two tapes, and to cover the first surfaces of the two tapes;   cooling the polymer material to integrally form an anti-permeating body and a first waterproof layer, wherein the anti-permeating body is filled in the gap between the two engaged teeth sets, and the first waterproof layer covers the first surfaces of the two tapes; and   cutting the anti-permeating body by a cutting tool.   
     
     
         2 . The manufacturing method of waterproof coil zipper as claimed in  claim 1 , wherein cutting the anti-permeating body further comprises cutting the anti-permeating body along a longitudinal center plane of a combination of the engaged teeth sets. 
     
     
         3 . The manufacturing method of waterproof coil zipper as claimed in  claim 1 , further comprising applying an adhesive to the first surfaces of the two tapes before extruding the melted polymer material. 
     
     
         4 . The manufacturing method of waterproof coil zipper as claimed in  claim 1 , wherein extruding the melted polymer material further comprises covering the second surfaces of the two tapes by the melted polymer material, and cooling the polymer material further comprises forming a second waterproof layer on the second surface. 
     
     
         5 . The manufacturing method of waterproof coil zipper as claimed in  claim 4 , further comprising applying an adhesive to the second surfaces of the two tapes before extruding the melted polymer material. 
     
     
         6 . The manufacturing method of waterproof coil zipper as claimed in  claim 3 , wherein extruding the melted polymer material further comprises covering the second surfaces of the two tapes by the melted polymer material, and cooling the polymer material further comprises forming a second waterproof layer on the second surface. 
     
     
         7 . The manufacturing method of waterproof coil zipper as claimed in  claim 6 , further comprising applying an adhesive to the second surfaces of the two tapes before extruding the melted polymer material. 
     
     
         8 . The manufacturing method of waterproof coil zipper as claimed in  claim 1 , wherein preparing the coil zipper further comprises spacing two opposite third surfaces of the two tapes from each other by a predetermined distance, with each of the third surfaces linking the first and second surfaces of a respective one of the two tapes. 
     
     
         9 . The manufacturing method of waterproof coil zipper as claimed in  claim 3 , wherein preparing the coil zipper further comprises spacing two opposite third surfaces of the two tapes from each other by a predetermined distance, with each of the third surfaces linking the first and second surfaces of a respective one of the two tapes. 
     
     
         10 . The manufacturing method of waterproof coil zipper as claimed in  claim 4 , wherein preparing the coil zipper further comprises spacing two opposite third surfaces of the two tapes from each other by a predetermined distance, with each of the third surfaces linking the first and second surfaces of a respective one of the two tapes. 
     
     
         11 . The manufacturing method of waterproof coil zipper as claimed in  claim 10 , wherein each of the two tapes further comprises a fourth surface opposite to the third surface thereof, wherein extruding the melted polymer material further comprises covering the fourth surface of one of the two tapes by the melted polymer material, and cooling the polymer material further comprises forming a third waterproof layer on the fourth surface of the one of the two tapes. 
     
     
         12 . The manufacturing method of waterproof coil zipper as claimed in  claim 11 , further comprising applying an adhesive to the fourth surface of the one of the two tapes before extruding the melted polymer material. 
     
     
         13 . The manufacturing method of waterproof coil zipper as claimed in  claim 10 , wherein each of the two tapes further comprises a fourth surface opposite to the third surface thereof, wherein extruding the melted polymer material further comprises covering the fourth surfaces of both of the two tapes by the melted polymer material, and cooling the polymer material further comprises forming a third waterproof layer on each of the fourth surfaces. 
     
     
         14 . The manufacturing method of waterproof coil zipper as claimed in  claim 13 , further comprising applying an adhesive to the fourth surfaces of both of the two tapes before extruding the melted polymer material.