RUBBER FOAM SHEETS  THINGS TO KNOW BEFORE YOU BUY

Quite the opposite, sponge rubber usually begins with expandable rubber sorts like EPDM or neoprene. The rubber compound is then supplemented having a chemical blowing agent, which, on heating, decomposes and releases gases. This process brings about the expansion with the rubber as well as the development of a sponge-like composition.Neoprene/EPDM