PROCESS FOR MANUFACTURING INSULATED WINDING WIRES BY EXTRUSION OF POLYETHYLENTEREPHTALATE

摘要

An extrusion process for the manufacture of insulated winding wires. Part crystalline thermoplastic polycondensates with crystallite melting points above 170 DEG C., preferably above 250 DEG C., are extruded. Polyethylene terephthalate is the polycondensate of choice. These are filled with 5-15% by weight titanium dioxide. The result is the avoidance of fissure formation.