| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of easily distinguishing a tire exposed to not less than a specific amount of ultraviolet rays, and capable of simplifying quality management. SOLUTION: A detection sheet 3 made of ultraviolet sensing color materials which change a tone of color when the accumulated radiation amount of ultraviolet rays reaches the specified amount is provided at least partially on a tire inner surface or tire outer surface. Therefore, it can be found out whether the accumulated radiation amount of ultraviolet rays exceeds the specified amount by visually recognizing the color of the detection sheet 3, the degrees of physical change due to ultraviolet ray can easily be distinguished, and quality management of the tire can easily be performed. COPYRIGHT: (C)2011,JPO&INPIT |
