Plastic article or earthenware shaping or treating: apparatus – With means applying coating material to work or work contact... – Separate means applying material directly to shaping means,...
Patent
1979-11-16
1981-08-25
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
With means applying coating material to work or work contact...
Separate means applying material directly to shaping means,...
425113, 4251311, 425143, 425197, A01J 2100, A21C 300
Patent
active
042856485
ABSTRACT:
A method of extruding a cross-linked material, more particularly an insulating cross-linked material around an electrical cable. In an extrusion machine comprising a housing terminated with an extrusion head and provided with a filtering means adjacent the outlet end of said housing, the cross-linkable product is fed without addition of a cross-linking agent, said cross-linking agent being first introduced in said cross-linkable material downstream said filtering means. The cross-linkable material is kept in the housing at an elevated temperature to be in a fluid state, the cross-linking agent being introduced at a temperature slightly lower than its reaction temperature, whereby the extrudate may be at a temperature near the maximum temperature admissible for the extrusion of said material.
REFERENCES:
patent: 2393452 (1946-01-01), Bailey et al.
patent: 2443289 (1948-06-01), Bailey et al.
patent: 3275731 (1966-09-01), Kosinsky
patent: 3923947 (1975-12-01), Cook
patent: 3930782 (1976-01-01), Bigland
patent: 4182601 (1980-01-01), Hill
Societe Industrielle de Liaisons Electriques Silec
Woo Jay H.
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