| 摘要 |
A manufacturing method of a pneumatic tire in which a tread rubber (10) formed by a nonconductive rubber is arranged in a tread portion (3), and a conductive portion (13) which is formed by a conductive rubber and reaches a carcass layer (7) or a belt layer (6) from a ground surface is buried in the tread rubber (10), wherein a step of forming the carcass layer (7) includes a step of forming a strip-like carcass ply (20) by coating a plurality of carcass cords (21) which are arranged in parallel, with a topping rubber (22) constructed by a nonconductive rubber portion (22a) which is along an extending direction of the carcass cord (21), and a conductive rubber portion (22b) which is narrower than the nonconductive rubber portion (22a), and a step of lining up a lot of the strip-like carcass plies (20) in a ply width direction so as to bond the strip-like carcass plies (20) sequentially. |
