| 摘要 |
PROBLEM TO BE SOLVED: To provide a sipe blade and a pneumatic tire which can avoid blade bending during vulcanization with maintaining ice performance.SOLUTION: A sipe blade 1 is a thin-plate-like member to form sipe on the tread surface of a tire, and a convexo-concave row having a waveform cross-section is formed on its outer wall surface. The sipe blade 1 includes a first outer wall section 11a having waveform extending to the inside of a tire diameter direction with displacing to one side LDL of the longitudinal direction, and a second outer wall section 12 being in a line with the inside of the tire radius direction of the outer wall section 11a and having waveform extending to the inside of the tire diameter direction with displacing to another side LDR of the longitudinal direction. At a depth point DP1 where the first outer wall section 11a and the second outer wall section 12 are in a line to each other and the convexo-concave row bends, at least three of the apex sections 13 facing to the one side LDL of the longitudinal direction are in a line in the longitudinal direction, and the apex sections 13a, 13c at both ends of the longitudinal direction LD have less sharpness compared with the apex section 13b between them. |
