Coating electrically conductive wire with polyolefin

Details Coating electrically conductive wire with polyolefin Coating electrically conductive wire with polyolefin

1977-03-29

1978-08-15

Smith, John D.

Coating processes

Electrical product produced

Wire conductor

174102R, 156 51, 521 74, 260 25E, 264 459, 264 50, 264 51, 264 53, 264 54, 264174, 264DIG5, 264DIG13, 427119, 427120, 427243, 521 79, B29D 2700

Patent

active

041073541

ABSTRACT:
Disclosed is a coaxial cable having greatly improved mechanical and electrical properties derived from a foamed dielectric having a dielectric constant in the range of 1.32 to 1.1, such cable being provided by a novel method of coating a center conductor of the cable with a dielectric with an extruded cellular polyolefin base composition which has been rendered cellular by the direct injection of a blowing agent in a liquid form into the polymer during an extrusion process. Also disclosed is an apparatus and a method of continuous wire electropolishing and pre-coating.

REFERENCES:
patent: 3645929 (1972-02-01), Normanton
patent: 3766099 (1973-10-01), Kawai et al.
patent: 3810964 (1974-05-01), Ehrenfreund
patent: 3882209 (1975-05-01), Yanagisawa
patent: 3968463 (1976-07-01), Boyson
patent: 4020025 (1977-04-01), Zeitler
Nakahara et al., "A Highly Expanded Polyethylene CATV Coaxial Cable," 22 IW & C Symposium, 12-1973.

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