Slide fastener with prefabricated coupling element

Abstract

A sliding clasp fastener having woven supporting tapes and woven-in prefabricated rows of interlocking members each formed helically from a plastics monofilament, in which the interlocking members, seen in a projection on the plane of the sliding clasp fastener, have limbs superimposed on at least the interlock side, interlocking heads protruding beyond the edges of the supporting tapes, an inserted core and attachment sections. Each row of interlocking members is attached to the top face of its supporting tape by binding chain threads engaging the interlock side of each interlocking member and at least one wrapping thread engaging the attachment sections and the core and attaching them to the supporting tapes. The binding chain threads are crossed over between successive interlocking members. The wrapping threads pass around the binding chain threads in a loop between successive interlocking members. The attachment sections, seen in a projection on the plane of the sliding clasp fastener, are disposed in the middle of the interlocking members, some distance from the interlocking heads but also some distance from the rearward return loops. The binding chain threads are disposed in the supporting tapes beneath the middle of the interlocking members and drawn on to the attachment sections by the loops of the wrapping threads which pass partly around the attachment sections.