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US 7,598,311 B2Granted
Rubber product and method for manufacturing the same
AssigneeTokai Rubber Industries, Ltd.
InventorsHidehito Ikeda, Yoshio Okado
Life of this patent
Estimating the term…
Abstract
A method for manufacturing a rubber product including masticating polymer with carbon black and factice is provided. A high-quality rubber product manufactured by this method is also provided. According to the present method, the carbon black is prevented from separating from a polymer and reaggregating, while the work environment is not deteriorated. A rubber composition prepared by the present method can be vulcanized and molded to manufacture the rubber product.
Claims9
A method for manufacturing a rubber product, comprising:
- preparing a rubber composition containing carbon black mixed in a polymer by a rubber kneading procedure including a mastication process and a kneading process;
- and
- vulcanizing and molding the rubber composition to manufacture a rubber product,
- wherein, together with the carbon black, factice is mixed in the polymer in the mastication process, content of the carbon black being 50 to 150 parts by weight and content of factice being 1 to 5 parts by weight based on 100 parts by weight of the polymer,
- wherein the mastication process is conducted at 110° C. to 190° C. and the rubber composition contains no filler other than carbon black and talc.
2 more elements
A method for manufacturing a rubber product, comprising:
- preparing a rubber composition containing carbon black mixed in a polymer by a rubber kneading procedure including a mastication process and a kneading process;
- and
- vulcanizing and molding the rubber composition to manufacture a rubber product,
- wherein, together with the carbon black, factice is mixed in the polymer in the mastication process at a temperature of 110° C. to 190° C., content of the carbon black being 50 to 150 parts by weight and content of factice being 1 to 5 parts by weight based on 100 parts by weight of the polymer.
1 more element
Dependencies are inferred from the claim text.