| 摘要 |
PURPOSE:To manufacture a tire with crown curvature radius R of given target without using a vulcanizing mold by renewing a belt layer of a casing, retaining the internal pressure inside a generated molding material with a precured tread applied on in a manner to make a differential pressure less than the external pressure outside by a given value or less and heating and vulcanizing. CONSTITUTION:Part of a belt layer 5 of a casing 1A is renewed to form a new belt layer 5, and a regenerated molded material 11 on which a precured tread 2A is applied is put in a vulcanizer, and at the time of heating and vulcanizing the regenerated molded product 11 from inside and outside, a vulcanizing device 21 is controlled and retained by a vulcanizing pressure controller 22 in order to maintain the internal pressure P1 inside an air bag 12 higher than the internal pressure P2 in the vulcanizer by 0-1kg/cm<3>, or the differential pressure DELTAP0 is 1kg/cm<3> or less. The belt layer and the tread are prevented from swelling out during vulcanization process. The final regenerated tire, therefore, can be provided with a desired crown curvature radius R. |
