On the contrary, sponge rubber routinely begins with expandable rubber forms like EPDM or neoprene. The rubber compound is then supplemented having a chemical blowing agent, which, on heating, decomposes and releases gases. This process contributes to the expansion with the rubber and also the development of a sponge-like framework. https://rubberfoamsheets26937.wizzardsblog.com/33751137/helping-the-others-realize-the-advantages-of-rubber-foam-sheets