Method of insulating electrical members with doubly oriented polystyrene backed micatape

Claim 1

IN THE PROCESS OF PRODUCING AN INSULATED ELECTRICAL CONDUCTOR, THE STEPS COMPRISING WRAPPING A CONDUCTOR MEMBER WITH A MICA TAPE, THE MICA TAPE COMPRISING A SHEET BACKING CONSISTING OF A FILM OF DOUBLY ORIENTED POLYSTYRENE, A LAYER OF MICA FLAKES DISPOSED ON THE POLYSTYRENE FILM BACKING AND A LIQUID RESINOUS BINDER HAVING A VISCOSITY OF FROM 25 TO 10,000 POISES AT 25*C., THE LIQUID RESINOUS BINDER UNITING THE MICA FLAKES AND POLYSTYRENE FILM INTO A STRONG, FLEXIBLE TAPE, APPLYING A FIBROUS SHEET TO THE EXTERIOR OF THE WRAPPED CONDUCTOR MEMBER, IMPREGNATING THE RESULTING WRAPPED CONDUCTOR MEMBER WITH A COMPLETELY REACTIVE THERMOSETTABLE RESINOUS COMPOSITION COMPOSED ESSENTIALLY OF FROM 90 TO 50 PARTS BY WEIGHT OF A REACTIVE ARYLALKENE POLYMERIZABLE MONOMER CAPABLE OF DISSOLVING POLYSTYRENE AND FROM 10 TO 20 PARTS BY WEIGHT OF AN UNSATURATED POLYESTER RESIN, THE IMPREGANTING RESINOUS COMPOSITION DISSOLVING BOTH THE POLYSTYRENE FILM AND THE LIQUID RESINOUS BINDER AS IT PENETRATES INTO THE WRAPPIG WHEREBY IMPREGNATING IS MORE COMPLETE AND MORE RAPID, THE DISSOLVED POLYSTYRENE AND THE LIQUID RESINOUS BINDER COMPRISING ONLY A MINOR PROPORTION OF THE IMPREGNATING RESINOUS COMPOSITION, AND CURING THE RESINOUS COMPOSTION TO PRODUCE AN ELECTRICAL CONDUCTOR HAVING ELECTRICAL INSULATION THEREON COMPRISING MICA FLAKES AND SOLID THERMOSET RESINOUS COMPOSISTION IMPREGNATING THE MICA FLAKES.