Waterproof slide fastener

Abstract

A waterproof slide fastener comprising: a pair of fastener stringers in which a plurality of fastener elements are arranged in line by molding integrally along opposing element attaching edge portions of a pair of waterproof fastener tapes, in which a belt shaped core material composed of a woven fabric, knitted fabric or unwoven fabric is covered with a waterproof layer; and a slider for engaging and disengaging the fastener elements, wherein the waterproof layer is composed of a polyurethane elastomer and the fastener elements are composed of a polymer alloy of polyurethane resin and ABS resin, thereby providing the waterproof slide fastener in which its fastener tape has an excellent adhesion characteristic to an attachment object such as the one covered with urethane coating, an excellent bending characteristic, a high fixing strength between the fastener tape and the fastener elements an excellent engaging strength and water-tightness.

1 . A waterproof slide fastener comprising:
 a pair of fastener stringers in which a plurality of fastener elements are arranged in line by molding integrally along opposing element attaching edge portions of a pair of waterproof fastener tapes, in which a belt shaped core material composed of a woven fabric, knitted fabric or unwoven fabric is covered with a waterproof layer; and   a slider for engaging and disengaging the fastener elements; wherein   the waterproof layer is composed of a polyurethane elastomer, and the fastener elements are composed of a polymer alloy of polyurethane resin and ABS resin.   
   
   
       2 . The waterproof slide fastener according to  claim 1 , wherein a ratio between the polyurethane resin and the ABS resin (polyurethane resin/ABS resin) in the polymer alloy is 20/80 to 50/50 in terms of a weight ratio.