Method for producing slide fastener stringer having colored metal element, metal element, slide fastener stringer and slide fastener chain

Abstract

This method for producing a slide fastener stringer having a colored metal element involves: forming a plurality of slide fastener elements fabricated from a metal material; preliminarily performing a surface-roughening treatment on the elements; forming one or more corrosion resistance layers on one or more roughened surfaces of the elements; forming one or more coating layers for covering the corrosion resistance layers; and attaching the teeth to a tape.

1 . A method of manufacturing a slide fastener stringer with colored metal elements, the method comprising:
 forming a plurality of elements for a slide fastener from a metal material;   subjecting the elements to a preliminary surface roughening process;   applying at least one anti-corrosion layer on at least one roughened surface of the elements;   applying at least one paint layer covering the anti-corrosion layer; and   attaching the elements to a tape.   
     
     
         2 . The method of manufacturing according to  claim 1 ,
 wherein the preliminary surface roughening process includes a blasting step, and   wherein the blasting step is or includes a step selected from a group comprising a shot peening, a sand blasting, a shot blasting, a steel ball shot blasting, and a wet blasting.   
     
     
         3 . The method of manufacturing according to  claim 1 , wherein the plurality of elements are formed from a copper-zinc alloy. 
     
     
         4 . The method of manufacturing according to  claim 1 , wherein the anti-corrosion layer is a plate layer including copper, tin, and zinc. 
     
     
         5 . The method of manufacturing according to  claim 1 , wherein the step of applying the anti-corrosion layer is followed by a step of applying a coloring backing layer of finishing. 
     
     
         6 . The method of manufacturing according to  claim 5 , wherein the coloring backing layer is a plate layer including tin and cobalt. 
     
     
         7 . The method of manufacturing according to  claim 5 , wherein after the step of applying the coloring backing layer, the paint layer is applied and formed multiple times. 
     
     
         8 . The method of manufacturing according to  claim 1 , wherein the paint layer is black. 
     
     
         9 . The method of manufacturing according to  claim 1 , wherein a final step of applying at least one layer of lacquer may be applied to the elements. 
     
     
         10 . A metal element for a slide fastener, the metal element comprising:
 a body made of a metal material;   at least one roughened outer surface subjected to a preliminary surface roughening process;   at least one anti-corrosion layer on the at least one roughened outer surface of the metal element; and   at least one paint layer covering the anti-corrosion layer.   
     
     
         11 . The metal element according to  claim 10 , wherein the metal element includes copper and zinc. 
     
     
         12 . The metal element according to  claim 10 , wherein the anti-corrosion layer is a plate layer including copper, tin, and zinc. 
     
     
         13 . The metal element according to  claim 10 , wherein at least one coloring backing layer is formed between the at least one anti-corrosion layer and the at least one paint layer. 
     
     
         14 . The metal element according to  claim 13 , wherein the coloring backing layer is a plate layer including tin and cobalt. 
     
     
         15 . The metal element according to  claim 10 , wherein the paint layer is black. 
     
     
         16 . The metal element according to  claim 13 ,
 wherein a plurality of recesses are formed on the roughened outer surface of the metal element by the preliminary surface roughening process, and   wherein the at least one anti-corrosion layer, the at least one coloring backing layer, and the at least one paint layer are formed inside the plurality of recesses.   
     
     
         17 . A slide fastener stringer comprising:
 a slide fastener tape; and   a row of metal elements attached to an edge portion of the slide fastener tape,   wherein the slide fastener stringer is manufactured through the method of manufacturing according to  claim 1 .   
     
     
         18 . A slide fastener chain; comprising:
 the slide fastener stringer of claim  17 , wherein:
 the slide fastener tape comprises:
 a left fastener tape extending in a longitudinal direction; 
 a right fastener tape extending in a longitudinal direction; and 
 
 the row of metal elements comprises:
 a left row of metal elements attached to an edge portion of the left fastener tape; and 
 a right row of metal elements attached to an edge portion of the right fastener tape, the left row of metal elements and the right row of metal elements engageable with each other.