| 摘要 |
A method for manufacturing a pneumatic tire having a carcass ply of cords rubberized with topping rubber, comprises a process for building a raw tire on an annular surface of an uninflatable core mold, and a process for vulcanizing the raw tire built on the core mold by heating the raw tire together with the core mold. The process for building the raw tire comprises making the raw carcass ply by rubberizing the carcass cords with the raw topping rubber. The carcass cords are made of polyethylene terephthalate or alternatively polyethylene naphthalate. The dry heat shrinkage percentage of the carcass cords before subjected to the vulcanizing process is 1 to 3% at 180 degrees C. The Mooney viscosity of the raw topping rubber is 35 to 70 (ML1+4, 130 deg. C.).
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