Title:
FACILITY AND METHOD FOR MANUFACTURING COAXIAL WIRE WITH FOAMED INSULATION
Document Type and Number:
WIPO Patent Application WO2002065485
Kind Code:
A3
Abstract:
A method of manufacturing wire from a conductor and a supply of thermoplastic insulating material. The method involves heating the insulating material, adding pressurized gas to the material, and extruding a sheath of the insulating material about the conductor to generate bubbles of the gas in the sheath. The method may operate by limiting the temperature of the material prior to extrusion, to increase viscosity to limit bubble expansion, and may provide a significant pressure drop on extrusion by limiting the gap between a wire-supplying guide and the extrusion die.
Inventors:
JEET SANYAL (US)
Application Number:
PCT/US2002/004078
Publication Date:
November 21, 2002
Filing Date:
February 06, 2002
Export Citation:
Assignee:
LUDLOW CO LP (US)
JEET SANYAL (US)
JEET SANYAL (US)
International Classes:
H01B13/016; B29C44/32; H01B13/14; H01B13/24; (IPC1-7): B29C44/34; H01B13/14
Foreign References:
| DE2501966A1 | 1975-07-24 |
Other References:
DATABASE WPI Section Ch Week 199407, Derwent World Patents Index; Class A17, AN 1994-051560, XP002211311
PATENT ABSTRACTS OF JAPAN vol. 016, no. 346 (M - 1286) 27 July 1992 (1992-07-27)
PATENT ABSTRACTS OF JAPAN vol. 016, no. 346 (M - 1286) 27 July 1992 (1992-07-27)
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