| 摘要 |
A double-layer rubber ribbon in which at least one surface of an outer surface is configured by a sheet-like thin rubber ribbon is formed by co-extruding a different color rubber ribbon having a second color different from a side rubber of a first color and the thin rubber ribbon. Further, the double-layer rubber ribbon is wound for one or more turns along a tire circumferential direction in such a manner that the thin rubber ribbon is positioned close to a carcass side. Thereafter, the wound double-layer rubber ribbon is covered by a cover rubber having the first color, and the different color rubber ribbon is exposed by scraping off a portion corresponding to a letter or a line of the cover rubber.
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