Polyvinylidene fluoride electrical cable

Claim 2

An electrical cable comprising: (a) at least one conductive wire, (b) an insulating layer surrounding the conductive wire, said insulating layer comprising expanded, microporous sintered polytetrafluoroethylene, (c) a primer coating of a vinylidene fluoride-hexafluoropropylene copolymer surrounding the insulating layer. (d) an outer coating covering and surrounding the primer coating comprising a film of polyvinylidene fluoride.

Claim 3

The cable of claim 1 wherein the vinylidene fluoride-hexafluoropropylene copolymer coating is formed from a solution of the vinylidene fluoride-hexafluoropropylene copolymer in an organic solvent.

Claim 4

The cable of claim 1 wherein the polyvinylidene fluoride film is extruded onto the vinylidene fluoride-hexafluoropropylene copolymer coating.

Claim 5

An electrical cable comprising a series of side-by-side parallel conductive wires arranged in a coplaner configuration to form a flat construction., said wires covered and surrounded by an insulative layer of expanded, microporous polytetrafluoroethylene., said insulative layer covered by a covering of a vinylidene fluoride-hexafluoropropylene copolymer; said cable having an outer layer of polyvinylidene fluoride coating which forms a solid protective coating surrounding the assembly within.

Claim 6

An electrical cable comprising a series of side-by-side parallel conductive wires arranged in a coplaner configuration to form a flat construction., said wires covered and surrounded by an insulative layer of expanded, microporous polytetrafluoroethylene., said insulative layer covered by a covering of a vinylidene fluoride-hexafluoropropylene copolymer; said cable having an outer layer of polyvinylidene fluoride coating which forms a solid protective coating surrounding the assembly within.

Claim 7

A process for making an electrical cable which comprises: (a) applying microporous expanded polytetrafluoroethylene tape around a conductive wire to form an insulative coating of microporous, expanded polytetrafluoroethylene, (b) subjecting the coated wire to a solution of a vinylidene fluoride-hexafluoropropylene copolymer and drying the resulting assembly. (c) applying polyvinylidene fluoride around said resulting assembly in a manner that encapsulated said assembly.

Claim 8

A process for making an electrical cable which comprises: (a) applying microporous expanded polytetrafluoroethylene tape around a conductive wire to form an insulative coating of microporous, expanded polytetrafluoroethylene, (b) subjecting the coated wire to a solution of a vinylidene fluoride-hexafluoropropylene copolymer and drying the resulting assembly. (c) applying polyvinylidene fluoride around said resulting assembly in a manner that encapsulated said assembly.