| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of shortening the vulcanizing time and improving productivity. SOLUTION: A tread rubber layer 8 of a tread part 1 is composed of an under tread rubber layer 9 disposed on an inner peripheral side and a cap tread rubber layer 10 disposed on the outer peripheral side. A land part 13 is divided and formed on the outer peripheral surface 11 of the cap tread rubber layer 10 by a groove 12. A part 9a of the under tread rubber layer 9 positioned at an inner peripheral side of a central part 13a in at least the land part 13 is composed of a rubber of which a thermal conductivity is higher than the cap tread rubber layer 10 by 5% at least. COPYRIGHT: (C)2006,JPO&NCIPI
|
