| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a manufacturing method of a passenger car pneumatic tire which can effectively reduce rolling resistance by bringing a region which is largely influenced by the rolling resistance of the tire into a proper vulcanized state.SOLUTION: When a green tire G is applied with a vulcanization process by a vulcanizer 1, and then, when a post-vulcanization process for completing a vulcanization reaction of the rubber of the tire T which is extracted from the vulcanizer 1 is finished, an equivalent vulcanization amount of each of tread rubber 5, side rubber 6 and belt coating rubber 10b is set to an equivalent vulcanization amount at which torque becomes not lower than 90% and not higher than 100% of a difference Mbetween maximum torque Mand minimum torque Mwithin a range in which the torque exceeds the maximum torque and a time does not elapse a vulcanization time t at a vulcanization curved line which is obtained by torque detection by a rheometer which is specified by JIS K6300-2 with respect to the same kind of a rubber compound as those of respective regions.</p> |
