RIGID CORE FOR TIRE FORMING, AND TIRE MANUFACTURING METHOD USING SAME

摘要

In an inner mold method, a pull-out force of extracting inner mold segments from a vulcanized tire is reduced. A rigid inner mold 1 is provided with an annular inner mold body 2 having a ti re molding surface S. A rigid core 1 is put into a vulcanization mold B for each green tire T formed on the tire molding surface S, whereby the green tire T is vulcanization-molded between the vulcanization mold B and the inner mold body 2. The inner mold body 2 comprises a plurality of inner mold segments 5 divided in the circumferential direction. A coating layer 11 having rubber release property is formed on the tire molding surface S.