On the contrary, sponge rubber commonly 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 results in the expansion with the rubber and also the development of the sponge-like construction. https://foam-rubber-manufacturer73831.thechapblog.com/32952340/helping-the-others-realize-the-advantages-of-rubber-foam-sheets