Vulcanizing, also called vulcanization, describes a chemical-technical process in which rubber is processed by adding sulfur under pressure and heat until it acquires an optimal elasticity as well as resistance to extreme weather conditions, a property that makes itself worthwhile especially for car tires.

Discovered in 1839, purely by accident, by the US American chemist Charles Goodyear, this method is used to produce rubber and is applied above all in the tire industry. The plastic nature of the rubber is converted into an elastic property as the result of vulcanization.

Industrial furnace types used