PROFILED SHEATHED WIRE FOR FORMING INTO AN ELECTRIC RESISTANCE WELDING

摘要

OF THE DISCLOSURE A wire-form element consists of at least one resistive wire coated with a thermoplastics material. The coating features mechanical fixing parts one of which is designed to cooperate with the other fixing part of an adjacent identical wire-form element to be joined to it. The wire-form element is particularly intended for the manufacture of electric resistance welding inserts. In the case of inserts intended for a welding sleeve for jointing tubular thermoplastics material parts it is preferably formed into a helical winding. In the case of inserts intended for making a branch connection to a tubular plastics material part by making a hole therein it may be formed into a flat spiral. Figure 1