When manufacturing a pneumatic tire, a replaceable member having a smooth flat surface is attached to a mold body of a tire mold configured to vulcanize an unvulcanized tire into a predetermined shape by contact with the unvulcanized tire, and thus a mold inner surface that forms the shape of a tire side surface portion including a curved surface of the mold body and the flat surface surrounded by the curved surface. Thereafter, a vulcanized tire is produced by vulcanizing the unvulcanized tire by bringing the unvulcanized tire into contact with the mold inner surface. Furthermore, a two-dimensional code is engraved in a planar surface region of the vulcanized tire, which corresponds to the flat surface. In the two-dimensional code, a dot pattern is formed by two types of gray scale elements that are formed identifiable from each other by surface unevenness.
METHOD FOR PRODUCING PNEUMATIC TIRES, TIRE MOLD, AND PNEUMATIC TIRES
VERFAHREN ZUR HERSTELLUNG VON LUFTREIFEN, REIFENFORM UND LUFTREIFEN
PROCÉDÉ DE PRODUCTION DE PNEUS, MOULE DE PNEU, ET PNEUS
2021-01-13
Patent
Elektronische Ressource
Englisch
Method for Producing Pneumatic Tires, Tire Mold, and Pneumatic Tires
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