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Plastic foam is synthetic resins, which can be changed to sponge-like mass, acting as close-cell structure or open-cell structure. The plastic foam generally includes urethanes, polyurethanes, vinyl, cellulose acetate, phenolics, etc. Generally, most of these plastics are derivatives of crude oil, whereas some of them are of natural origin. Plastic foams find applications in the number of products depending upon their characteristics. Plastic foams are classified on the basis of density, flexibility, etc. Low-density foams find applications in the packaging industry, insulation, and manufacturing of bedding and upholstery. High-density foams are used for footwear soles, simulated wood, and automotive interiors. Moreover, they are also used automotive exteriors.