| 摘要 |
PROBLEM TO BE SOLVED: To increase a heat radiating effect of heat generated in a tread part at traveling time, and to improve heat resistant performance by blending a short fiber-like metallic filament in at least a maximum thickness part of the tread part of a pneumatic tire. SOLUTION: A very large number of carcass layers 1 are laminated inside a pneumatic tire for a large construction vehicle, and both end parts are respectively folded back outside from the tire inside around bead cores 3a to 3c respectively arranged by three pieces per one side. In a tread part 2, a shoulder part 2s is a maximum thickness part, and in this case, a short fiber-like metallic filament 4 is dispersively blended with rubber of the shoulder part 2s. Thus, when the short fiber-like metallic filament 4 having high heat conductivity is blended with the shoulder part 2s of the maximum thickness part, since heat generated inside the tread part 2 at traveling time easily moves, a heat radiating effect to the tire outside can be improved to prevent the thermal degradation of the shoulder part 2s to improve heat resistant performance. |
