| 摘要 |
PROBLEM TO BE SOLVED: To provide a mold showing excellence in workability, working accuracy and durability in a case of making a vertical hole in a block land part of a tire having a block pattern, and to provide a tire having both a high stiffness of the land part and a drainability and showing a high dimensional accuracy. SOLUTION: The tire shaping mold 1 comprises a groove forming protrusion 3 and vertical hole forming protrusions 4 on a tread portion forming surface 2. A connection part 5 connecting the vertical hole forming protrusions 4 is arranged between the vertical hole forming protrusions 4 each shaping the vertical hole in the same block land part of a product tire. The tire manufactured by this has a narrow groove 13 making the vertical holes 12 communicate with each other between the vertical holes 12 arranged in the same block land part 7. COPYRIGHT: (C)2007,JPO&INPIT |
