Method for molding rubber product

Details Method for molding rubber product Method for molding rubber product

C - Chemistry, Metallurgy

08

J

C08J 3/24 (2006.01) B29B 7/90 (2006.01) B29C 47/00 (2006.01) C08C 4/00 (2006.01) C08J 3/22 (2006.01) C08L 21/00 (2006.01) B29C 35/04 (2006.01) B29C 35/08 (2006.01) B29C 47/10 (2006.01) B29C 47/36 (2006.01)

Patent

CA 2425676

A method of molding a rubber product from a rubber compound by a molding apparatus having a kneading region. A full amount of carbon black (CB) and a full amount of process oil, together with other auxiliary materials except vulcanizing chemicals, are compounded with raw rubber to thereby knead and prepare a granular master batch (granular MB) . The rubber product is extrusion-molded and vulcanized after vulcanizing chemicals (a vulcanizing agent and a vulcanization accelerator) are quantitatively supplied into the kneading region of the molding apparatus through a material supply port while the vulcanizing chemicals are mixed with the granular MB.

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