| 摘要 |
PROBLEM TO BE SOLVED: To suppress occurrence of air entry between a belt reinforcing layer and a tread when a rubber strip is laminated on the belt reinforcing layer formed in a divided state to form the tread having a base part and a cap part. SOLUTION: The belt reinforcing layer 80 is divided in its width direction and reinforcing members 82 are superposed on the belt reinforcing layer 80 at the divided position D of the belt reinforcing layer 80 to be formed on the outer periphery of an object to be molded. Rubber strips G1 are laminated on the belt reinforcing layer 80 excepting the non-laminated range H including level differences of the superposed part of the belt reinforcing layer 80 and a base part 11 is formed without covering the superposed part of the belt reinforcing layer 80. Rubber strips G2 are successively superposed and laminated along the outer periphery of the base part 11 to form a cap part 12. The lamination interval of the rubber strips G2 is altered during the formation of the cap part 12 and made narrower than another range in the non-laminated range H of the base part 11 and the rubber strips G2 large in angle of lamination are laminated on the belt reinforcing layer 80. COPYRIGHT: (C)2011,JPO&INPIT
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