Sumitomo Rubber Industries Limited

Kiyotaka Nishio

Wako Iwamura

Makoto Sugiya

Makoto Igarashi

A method of manufacturing a tire product comprising: a step of preparing a core-assemblyof a rigid coreand a rubber memberformed on the rigid core, wherein the rigid coreis attached to a spindle device, and the rubber memberis to be vulcanization-molded, and constitutes all or a portion of a green tire, a step of conveying the core-assemblyfrom the spindle deviceinto a mold, and a step of vulcanization-molding the rubber memberon the rigid corein the mold. The conveying of the core-assembly includes obtaining the weight of the rubber memberincluded in the core-assembly

Method of manufacturing tire product

An apparatusfor measuring a diametrical stiffness of a tread ringfor an airless tirecomprises: a devicefor supporting the tread ring, a devicefor applying a constant load F to the supported tread ring across the diameter of the tread ring, and a devicefor measuring the amount of deflection of the tread ring across the above-said diameter caused by the applied load F.

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Kobe, Japan

Kiyotaka Nishio