Know the using process of curing bladder in tyre production:
Curing is the process of applying pressure to the green tyre in a mould. This gives it its final shape. There is heat energy applied to stimulate a chemical reaction between the rubber compounds and other materials.
In curing process, you will observe that the green tyre is transferred onto the lower mold bead seat, a curing bladder is inserted into the green tire, and the mold closes while the curing bladder inflates. As the mold closes and is locked the bladder pressure increases so as to make the green tire flow into the mold, taking on the tread pattern and sidewall lettering engraved into the mold.
The curing bladder is filled with a circulating heat transfer medium (such as steam, hot water, or inert gas). At the end of cure the pressure is bled down, the mold opened, and the tire stripped out of the mold.
There are radial and bias type curing bladders for the passenger car, light truck, OTR (Off-The-Road), agricultural, bicycle, and motorcycle tyres. You will also find curing bladders for tire retreading and air spring production.