Abstract A fire-retardant insulating tape wrap having high tensile strength particularly for use in a service entrance cable includes a glass scrim backing to which a continuous polyester film is adhered using a synthetic rubber laminate adhesive which is applied to the film. After the tape is wrapped about the conductors, a continuous polyester sheath is extruded in situ over the wrapped conductors to provide a continuous outer jacket for the cable. The tape is made by coating the adhesive onto the film under relatively low application pressure. Then the film and scrim are brought together in a drying oven with the scrim being under relatively high lengthwise tension and the film being under lesser lengthwise tension.
a thin continuous polyester film coextensive with the backing, and
Claim 2
Dependent Claim
42 words
The cable defined in claim 1 wherein the adhesive has a viscosity which is low enough such that some of the adhesive tends to wick up between the glass fibers in the scrim so as to provide a buffer between the fibers.
Claim 3
Dependent Claim
54 words
a thin plastic laminate adhesive coating on the film bonding the film to the backing, said adhesive being comprised of one of the group consisting of acrylic, urethane, a copolymer of acrylic and polyvinyl chloride and a copolymer of modified acrylonitrile and butadiene, and C. a continuous in situ extrusion jacketing the wrapped conductors.