Type of wrapped textile thread and process for its production which involves thermofusion to secure wrapping to core

Claim 1

A wrapped textile thread comprising threads arranged considerably parallel to each other to form a core, wherein the multithreaded core is composed of a plurality of individual threads made from a fragile textile substance selected from the group consisting of glass fibers, fibers of refractory material, wherein the refractory material is carbon, boron or silicon, and fibers of an aromatic polyamide, said core being covered by a wrapping thread with a simple regular and spiral winding, wherein at least part of the peripheral surface of the core has been joined together by heat fusion with the wrapping thread, wherein the joining together of the core with the wrapping thread is obtained by a thread-like thermofusible material which is at once compatible with the nature of the wrapping thread and which has a fusion temperature which is lower than the fusion temperature of the core thread and the wrapping thread.