EPS, Expanded Polystyrene, is a foam that uses Pentane gas as the blowing agent. The polystyrene resin granules are impregnated with the blowing agent during the process of production. It will then expand by the heat of steam up to 50 times in volume. It will then be molded and formed into its intended product. Some examples of uses are sponges, spray foam for insulation, ice box, food box, packaging for televisions, coffee cups, and many more.
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