Abstract: Disclosed are several embodiments of Improved CATV (Coaxial Drop Wire), using either foil laminate or a metallic braid in combination with another foil laminate adhesively bonded to the drop wire core dielectric, the improvements being (a) the elimination of traverse (radial) cracks, commonly called "tiger striping," developing in the foil as a result of the foil wrinkling, and (b) the elimination of slot antenna effect. One embodiment employs two laminated tapes, one circumferentially surrounding the other and both circumferentially surrounding a core. One laminated tape is bonded to the core dielectric and the other is bonded to a jacket, surrounding the outer laminate tape. The other embodiment employs a metallic braid tape circumferentially surrounding a metal foil-plastic film-metal foil laminate tape adhesively bonded to the core dielectric.

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.

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, a density between 0.1 and 0.29 grams per cubic centimeter, said foamed dielectric having dispersed throughout it undecomposed particles of a nucleating agent 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.