Manufacturing method of a zipper with a horizontal bent potion and such zipper

Abstract

A manufacturing method of a zipper with a horizontal bent potion includes the following steps. (a) Place the zipper with two strip portions which consist of warp and weft, in a mold that has at least a horizontal bent portion. (b) The mold is heated to the melting point of the weft. (c) The mold makes the shape of the zipper identical to that of the mold. (d) A setting membrane is coated on the zipper to set the shape of the strip portions. Therefore, the zipper may have a different shape.

1 . A manufacturing method of a zipper with a horizontal bent potion, comprising the following steps:
 (a) placing the zipper with two strip portions which consist of warp and weft, in a mold that has at least a horizontal bent portion;   (b) heating the mold to a melting point of the weft;   (c) the mold making a shape of the zipper identical to that of the mold; and   (d) coating a setting membrane on the zipper to set the shape of the strip portions.   
     
     
         2 . The manufacturing method as in  claim 1 , wherein the warp is made of nylon which has a higher melting point and the weft is made of PP (polypropylene) which has a lower melting point. 
     
     
         3 . The manufacturing method as in  claim 1 , wherein the warp is made of PP (polypropylene) which has a lower melting point and the weft is made of nylon which has a higher melting point. 
     
     
         4 . The manufacturing method as in  claim 1 , wherein the melting point of the weft is in a range from 100 to 220 degree C. 
     
     
         5 . The manufacturing method as in  claim 1 , wherein the setting membrane consists of PU. 
     
     
         6 . A zipper with a horizontal bent portion, comprising:
 two strip portions;   two rows of teeth; and   a sliding tab, disposed on one of the two rows of teeth,   wherein either strip portion has at least a horizontal bent portion.   
     
     
         7 . The zipper as in  claim 6 , wherein the two rows of teeth consist of metal, POM or nylon.