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Neoprene is sold either as solid rubber or in latex form, and is used in a wide variety of applications, such as laptop sleeves, orthopedic braces (wrist, knee, etc.), electrical insulation, liquid and sheet applied elastomeric membranes or flashings, and automotive fan belts. 1 Production.
The rubber used in creating tires is a mixture of many compounds, including carbon, latex, rosin and chalk, hardened by the addition of sulfur and other compounds. There is not a single melting point for these substances, so using the term softening applies more closely to the super heating of rubber tires. Because tires cannot simply be melted, the recycling process involves shredding the tires, then freezing them with liquid nitrogen.