Process for making an electrical cable with expandable insulatio

Details Process for making an electrical cable with expandable insulatio Process for making an electrical cable with expandable insulatio

1993-12-13

1995-11-21

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Making electrical conductors of indefinite length

156 51, 156 53, 156 83, 15624412, 264 454, 264 459, 264 466, 4274346, H01B 1308, H01B 1314, H01B 1322

Patent

active

054683149

ABSTRACT:
Improved insulative cable assemblies and methods for producing them are disclosed. The insulative cable assemblies comprise a conductor housed within a polymeric insulation layer expanded with expandable thermoplastic microspheres. The use of a relatively inelastic outside sheath controls the expansion of the insulative layer and assures a snug fit between the insulation and the conductor. The insulation layer is highly resilient and resistant to dielectric changes due to compression or damage from mechanical manipulation of the cable. Additionally, the ability to expand the insulative layer after cable assembly is completed provides far greater freedom in cable processing without compromising low dielectric constant.

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