Duplex cured elastomer hoses and method of manufacture

Details Duplex cured elastomer hoses and method of manufacture Duplex cured elastomer hoses and method of manufacture

1987-07-31

1989-02-21

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

138123, 138126, 428266, 428287, 428 362, F16L 1100, B32B 2734

Patent

active

048064017

ABSTRACT:
A method of manufacturing fiber reinforced silicone elastomer hoses and the hoses (25) resulting from the method are disclosed. The method comprises the step of extruding an unreinforced silicone elastomer inner tube (13) containing two vulcanizing agents having different activation temperatures. The extruded inner tube (13) is partially cured by heating the tube to the activation temperature of the lower temperature vulcanizing agent. The partially cured inner tube (13) is mounted on a mandrel (19) and wrapped with a fabric reinforced, calendered sheet (21) of uncured silicone elastomer containing a vulcanizing agent. External pressure is applied to the wrapped tube while the wrapped tube is heated to activate the second vulcanizing agent of the inner tube (13) and the vulcanizing agent of the wrapping sheet (21).

REFERENCES:
patent: 4106967 (1978-08-01), Logan et al.
patent: 4262704 (1981-04-01), Grawey
patent: 4273160 (1981-06-01), Lowles
patent: 4489127 (1984-12-01), Gutek
patent: 4518018 (1985-05-01), Kutnyak et al.
patent: 4559782 (1985-12-01), Ritchey et al.
patent: 4564870 (1986-02-01), Shinmi

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