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The vulcanizing procedure, invented by Charles Goodyear, uses pressure, heat, and time. No material is removed from the tire. The structural integrity of the tire is not changed during curing. Vulcanization is a process by which two pieces of rubber are permanently joined together. It's done with 100 psi of air pressure in the bladder at 300 degrees F for 24 minutes. When complete, the stripe is an integral part of the tire and cannot be removed without damaging the sidewall.