| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire to be manufactured by using a sectional type mold and capable of suppressing the generation of cracks at a groove bottom located at a section connection part of a circumferential groove, a sectional type mold for the tire, and a pneumatic tire manufacturing method. SOLUTION: The pneumatic tire has a circumferential groove 2 extending in the tire circumferential direction TC on a tread surface 1, and the tread surface 1 is molded by annularly articulating a plurality of divided sectors 11 of the sectional type mold with each other. In a groove wall 2Y located on at least on the shoulder side out of both groove walls 2X, 2Y of the circumferential groove 2, the angleθ2 of the groove wall surface 2Ya located on a connection part 11a of the sector 11 is larger than the angleθ1 of the groove wall surface 2Yb located in a vicinity of the connection part 11a of the sector 11 on the groove bottom side of at least the circumferential groove 2. COPYRIGHT: (C)2007,JPO&INPIT |
