Fastener product made of hydrolysis-resistant synthetic resin

Abstract

In a fastener product made of a synthetic resin such as a slide fastener, a separable fastener and a snap tape comprising an attachment part and an engagement part, at least the engagement part is made of a hydrolysis-resistant synthetic resin. Preferably, the hydrolysis-resistant synthetic resin is polyester having a carbodiimide-based hydrolytic stabilizing agent incorporated therein. In a slide fastener having a pair of fastener tapes and coupling elements fixed to the longitudinal edges of the fastener tapes, they are made of a hydrolysis-resistant synthetic resin material. When the slide fastener further comprises upper and lower stop members, a pin-and-box separator, a pair of reinforcing sheet-like members, sewing threads and core cords, they are made of the hydrolysis-resistant synthetic resin material.

What is claimed is:  
     
         1 . An engagement member made of a synthetic resin, comprising an attachment part and an engagement part, wherein at least said engagement part is made of a hydrolysis-resistant synthetic resin.  
     
     
         2 . The engagement member according to  claim 1 , wherein said hydrolysis-resistant synthetic resin is polyester having a carbodiimide-based hydrolytic stabilizing agent incorporated therein.  
     
     
         3 . A slide fastener made of a synthetic resin, comprising a pair of fastener tapes and coupling elements fixed to edges of said fastener tapes, wherein said fastener tapes and said coupling elements are made of a hydrolysis-resistant synthetic resin material.  
     
     
         4 . The slide fastener according to  claim 3 , which further comprises sewing threads for fixation of said coupling elements to said fastener tapes, said sewing threads being made of a hydrolysis-resistant synthetic resin material.  
     
     
         5 . The slide fastener according to  claim 3 , which further comprises core cords extended as inserted through the individual coupling elements in the longitudinal direction of said elements, said core cords being made of a hydrolysis-resistant synthetic resin material.  
     
     
         6 . The slide fastener according to  claim 3 , which further comprises upper and lower stop members fitted respectively to upper and lower ends of said coupling elements, said upper and lower stop members being made of a hydrolysis-resistant synthetic resin material.  
     
     
         7 . The slide fastener according to  claim 3 , which is an open-link type slide fastener having a pin-and-box separator and a pair of reinforcing sheet-like members fixed respectively to lower end portions of said fastener tapes, but having no lower stop member, wherein said pin-and-box separator and reinforcing sheet-like members being made of a hydrolysis-resistant synthetic resin material.  
     
     
         8 . The slide fastener according to  claim 7 , wherein said reinforcing sheet-like members are integrated with said pin-and-box separator.  
     
     
         9 . The slide fastener according to  claim 3 , wherein all component parts are made of the same chemical type of synthetic resin material.  
     
     
         10 . The slide fastener according to  claim 9 , wherein said synthetic resin material is polyester having a carbodiimide-based hydrolytic stabilizing agent incorporated therein.  
     
     
         11 . A separable fastener made of a synthetic resin, comprising a base part and an engagement part composed of a multiplicity of engaging elements formed on an obverse side of said base part, wherein said base part and said engagement part are made of a hydrolysis-resistant synthetic resin material.  
     
     
         12 . The separable fastener according to  claim 11 , wherein said hydrolysis-resistant synthetic resin material is polyester having a carbodiimide-based hydrolytic stabilizing agent incorporated therein.  
     
     
         13 . A snap tape made of a synthetic resin, comprising tape and an engagement part composed of male and/or female detachably fitting parts formed on said tape, wherein said tape and said engagement part are made of a hydrolysis-resistant synthetic resin material.  
     
     
         14 . The snap tape according to  claim 13 , wherein said hydrolysis-resistant synthetic resin material is polyester having a carbodiimide-based hydrolytic stabilizing agent incorporated therein.