| 摘要 |
PURPOSE:To obtain a light-weight pneumatic tire, a gauge of which is equalized approximately, by using a spherical surface in the circumferential direction and the radial direction as a projecting section for molding a section between projections, filling a recessed section with a fluid rubber by the pushing of an inner-surface molding pair and vulcanizing and molding the fluid rubber. CONSTITUTION:In the manufacture of a pneumatic tire, which is obtained by charging a raw tire 11 into opening-closing-free moldes 1, 5 with tire contour- shaped mold surfaces 4, 8 composed of recessed sections 2, 6 for molding a projection such as a lug, a block, etc., on a tire tread and projecting sections 3, 7 for molding a section between the projections on the tire tread, pushing the raw tire 11 against the mold surfaces 4, 8 by a tire inner-surface molded form 10 and vulcanizing and molding the raw tire, spherical surfaces in the circumferential direction and the radial direction are used as the projecting sections 3, 7 for molding the section between the projections, and the recessed sections 2, 6 are filled with a fluid rubber by pushing the inner-surface molded form 10 and the fluid rubber is vulcanized and molded. |
