| 摘要 |
PURPOSE: A triple hybrid cord for a tire reinforcing belt and a pneumatic tire comprising the same are provided to ensure size stability according to the temperature and to improve durability. CONSTITUTION: A triple hybrid cord for a tire reinforcing belt comprises a high elongation cord, a middle elongation cord, and a low elongation cord. The conditioned size of the high elongation cord is 800-2500 D/1. The twist of primary twist and secondary twist of the high elongation cord is 15-35T/dm. The conditioned size of the middle elongation cord is 800-2500 D/1. The twist of primary twist and secondary twist of the middle elongation cord is 15-35T/dm. The conditioned size of the low elongation cord is 800-2500 D/1. The twist of primary twist and secondary twist of the low elongation cord is 15-35T/dm.
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