How to form a groove of non-through state to the unvulcanized tread and equipment

摘要

As for this invention, being production method of the tire which possesses the tread which is provided in the tread block where the radial groove of non penetration state forms tread pattern, cover the blank of the tire the groove (33) it possesses the step which is formed in vulcanization the tread (3), the blade 1 or 2 or more it is heated to the temperature whose tread (3) is higher than vulcanization temperature of the constitution material (22) spending sufficient time in method, tread (3) the radial inside (32) inserting in, the blade (22) to vulcanize the wall of the groove which contacts surface, thatDue to, removing the blade from the groove once, it regards the method of featuring that it obstructs the fact that the radial inside adheres mutually again.