| 摘要 |
A tire curing bladder is provided to improve the limit life of the bladder compared to existing bladders although the bladder is repetitively subjected to a plurality of contacting and expanding processes by improving rigidity of the bladder. In a tire curing bladder having an outer surface(110) contacting with an inner surface of a green tire, and an inner surface(120) performing pressurization of air, the tire curing bladder is characterized in that a concave vent line(111) is formed on the outer surface of the bladder to exhaust residual air between the green tire and bladder, and a projecting convex vent reinforcing line(121) corresponding to the vent line is formed on the inner surface of the bladder. The vent reinforcing line has a projecting height(H) that is not shorter than a concavely depressed depth(D) of the vent line.
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