Process for the production of highly expanded polyolefin insulat

Details Process for the production of highly expanded polyolefin insulat Process for the production of highly expanded polyolefin insulat

1980-04-25

1982-10-05

Lusignan, Michael R.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Making electrical conductors of indefinite length

156 78, 156 83, 156201, 15624411, 15624412, 264 459, 264 455, 264 461, 264174, 174110F, 174110PM, 174120C, H01B 702

Patent

active

043527019

ABSTRACT:
A process for producing a highly expanded polyolefin insulated cable comprising the steps of feeding a compound of polyolefin, nucleating agent and volatile liquid to an extruder, heat extruding said compound through said extruder onto an inner conductor passing through said extruder to cover the outer periphery of said inner conductor thereby forming an insulation layer of highly expanded polyolefin foam having a foaming ratio in excess of 2.5 times (60% expansion degree) tightly adhered to said inner conductor.

REFERENCES:
patent: 2308638 (1943-01-01), Balthis et al.
patent: 2422281 (1947-06-01), Adams
patent: 2885738 (1959-05-01), Henning
patent: 3173990 (1965-03-01), Lamons
patent: 3693250 (1972-09-01), Brorein et al.
patent: 3764642 (1973-10-01), Boutillier
patent: 3840384 (1974-10-01), Reade et al.
patent: 3902704 (1975-09-01), Ishibashi et al.
patent: 3903233 (1975-09-01), Dougherty
patent: 3968463 (1976-07-01), Boysen
Proceedings of the 19th International Wire and Cable Symposium, Atlantic City, N.J., Dec. 1, 2, 3, 1970, sponsored by U.S. Army Electronics Command.

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