Method for manufacturing waterproof zipper and the device manufactured from the same

Abstract

A method for manufacturing a waterproof zipper comprises steps of: feeding a nylon zipper to a feeding device; passing the nylon zipper to a gluing device and coating PU gel on backsides of the fastener strips of the nylon zipper; adhering a PU film with PU gel on backsides of the fastener strips by using rollers to press the PU film so as to be formed as a waterproof layer; wherein the PU film is adhered on a release paper; heating the PU film and PU gel to be formed as a waterproof layer; cutting the waterproof layer along a center of the waterproof layer so as to form with two waterproof layers are located at the two fastener strips. Thus a waterproof zipper is formed. Finally, the waterproof zipper is guided out. A nylon waterproof zipper is made by using method.

1 . A nylon waterproof zipper comprising two symmetric fastener strips; each fastener strip has a front surface and a back surface; an inner side of the front surface of each fastener strip having a cord thread protruded from the surface; two chains being mounted along the cord threads, respectively; the cord threads being fixed to the fastener strips, respectively; the two chains being engaged by a coupling slider; a back surface of each fastener strip being combined with a thin waterproof layer; characterized in that: a back surface of each fastener strip is permeated with PU gel; and then a PU film is adhered to the back surface by thermal plastic stage so as to be formed as a waterproof layer which includes an inner layer of the PU gel permeating into the fastener strips and an outer layer at an outer side of the fastener strips.  
   
   
       2 . The nylon waterproof zipper as claimed in  claim 1 , wherein the waterproof layer is formed with textures.  
   
   
       3 . The nylon waterproof zipper as claimed in  claim 1 , wherein a thickness of the inner layer is over one third of each fastener strip.  
   
   
       4 . The nylon waterproof zipper as claimed in  claim 1 , wherein a thickness of the inner layer is over one half of each fastener strip.  
   
   
       5 . The nylon waterproof zipper as claimed in  claim 1 , wherein the waterproof layer is formed with printing patterns.