| 摘要 |
A method for building a tire on a toroidal core, to include carcass plies with a high tensile resistance and bead portions with an improved rigidity, wherein the carcass plies ( 4, 10 ) are formed by continuously applying carcass cords ( 3, 9 ) onto an outer surface of the core over entire periphery thereof. An inner carcass ply ( 4 ) is formed by feeding the carcass cord ( 3 ) in a meridian direction of the core ( 1 ), and folding back the carcass cord ( 3 ) at each side portion of the core. Each radially inner peripheral portion ( 7 ) of the inner carcass ply ( 9 ) is turned-up radially outwards about a bead core ( 6 ). A skim rubber ( 8 ) is subsequently applying onto an outer surface of the inner carcass ply ( 9 ), which has been formed with the turned-up portions ( 7 a). An outer carcass ply ( 10 ) is formed by feeding a carcass cord ( 4 ) in the meridian direction of the core ( 1 ) and folding back the carcass cord ( 4 ) at each side portion of the core ( 1 ), and applied onto an outer surface of the skim rubber ( 8 ).
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