PNEUMATIC TIRE, MOLDING DIE FOR PNEUMATIC TIRE, AND MOLDING METHOD FOR PNEUMATIC TIRE

摘要

PPROBLEM TO BE SOLVED: To provide a pneumatic tire capable of suppressing the falling of rubber pieces when a sipe blade is extracted from a tread, allowing a core extraction hole to be easily formed, and having sipes formed by the sipe blade allowing cutting performance to be less lowered with use, a molding die for the pneumatic tire, and a method of molding the pneumatic tire. PSOLUTION: This pneumatic tire comprises a tread pattern having a plurality of blocks in which a plurality of sipes 1 are formed. A projection 4 is formed on at least one face of the groove wall faces 3 of the sipe, the projection 4 is formed in a columnar shape with a fixed diameter ranging from the tip part thereof to the generally half position of the length of the projection 4 at the maximum, and is formed in a tapered shape so that the diameter thereof is gradually increased from that position to the groove wall face 3 having the projection 4. PCOPYRIGHT: (C)2004,JPO&NCIPI