PRODUCTION OF INSULATED WINDING WIRES THAT CAN DE DIRECTLY TINNED

摘要

1. Method for the production of insulated winding wires that can be directly tinned by extrusion of thermoplastic polycondensate resins without aftertreatment of the extruded coating by after-stretching, wherein the resins are applied on the wire in one step in such a layer thickness complying with the requirements of the German Industrial Standard DIN 46435, the improvement which comprises employing solvent-free polyurethane elastomers of difunctional aromatic isocyanates and monomeric diols.