Tyre Curing Bladders

The curing bladder is cylindrical bag of specially compounded butyl rubber containing a poly-methylolphenol resin cure system. This collapsible bladder is mounted in the lower section of the tire curing press and forms a part of the press and mold assembly. The "green" unvulcanized tire is positioned over the bladder in the bottom half the mold. When the mold is closed, pressurized steam, air, hot water, or inert gas (nitrogen) is introduced systematically (pre-programmed) into the bladder to provide internal heat and pressure for the tire shaping and curing process.