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AssigneesSumitomo Rubber Industriesm, Ltd., Nippon Steel Corporation, Sumitomo (SEI) Steel Wire Corp.
InventorsShinichi Miyazaki, Junichi Kodama, Yasuo Sakai, Keisuke Aramaki, Yuichi Sano, Kenichi Okamoto
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A rubber-cord complex having an improved wet heat adhesive property between a rubber and a cord comprising a drawn plated wire, and including a metal cord comprising a drawn plated wire prepared by providing a brass plated layer on the surface of an element wire and drawing the resulting plated wire, and a rubber vulcanized and bonded to the cord, wherein in a wet heat deterioration state of the drawn plated wire after being subjected to the vulcanization to bond the rubber thereto and further held under an atmosphere having a temperature of 50 to 100° C. and a humidity of 60 to 100% for one hour to 20 days, the average grain size of crystal grains present in the brass plated layer is not more than 50 nm, and the grain boundary of the crystal grains has a fractal dimension of 1.001 to 1.500.
A rubber-cord complex obtained by vulcanizing and bonding a rubber to a metal cord comprising a drawn plated wire prepared by providing a brass plated layer containing copper and zinc on the surface of a metal wire and drawing the resulting plated wire, wherein in the wet heat deterioration state of the metal cord to which the rubber has been vulcanized and bonded and which has been held in an atmosphere having a temperature of 50 to 100° C. and a humidity of 60 to 100% for one hour to 20 days, the average grain size of crystal grains present in the brass plated layer is not more than 50 nm, and the grain boundary of the crystal grains has a fractal dimension of 1.001 to 1.500.
Dependencies are inferred from the claim text.