Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1975-05-12
1976-08-24
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156244, 156334, 156304, 156338, 264171, 264236, 264176R, 264347, 428 58, 428516, 428114, 428517, 428515, 428519, C09J 500, B29C 1900
Patent
active
039765300
ABSTRACT:
A vulcanizing agent for rubber is incorporated into a polymer which is substantially noncrosslinkable by the agent but which is fusible with rubber upon milling. The resulting polymeric mixture and a vulcanizable rubber are formed into strips which are joined together along the lengths thereof to form an elongated, two-component tape wherein the rubber vulcanizing agent is carried in the nonreactive polymer. Sections of the tape can be milled to produce a vulcanizable compound by blending the polymeric component with the rubber component, thus obviating any need for separate addition of a rubber vulcanizing agent. The tape can be wound on a reel and stored until the need for blending arises. Premature reaction of the vulcanizing agent with the rubber is prevented since it is bound within the noncrosslinkable polymer. In one highly useful application, the two-component tape is fed continuously to an extruder wherein blending of the components is effected, and whereby the resulting blend is continuously extruded as a self-curing sealant tape which is simultaneously applied to a structural joint requiring a seal.
REFERENCES:
patent: 3018208 (1962-01-01), Werner et al.
patent: 3130976 (1964-04-01), Niswander
patent: 3157564 (1964-11-01), Tucker et al.
patent: 3504579 (1970-04-01), Botewicz
patent: 3708379 (1973-01-01), Flint
patent: 3837981 (1974-09-01), Flint
patent: 3900999 (1975-08-01), Callan
Cities Service Company
Gallagher J. J.
Gunn Elton F.
Powell William A.
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