Developed by JSP in 1970, expanded polypropylene (EPP) foam was first used in automotive products in 1982 in Japan. Since then with the excellent physical properties as compared to other commercially available cellular foams, automotive expanded polypropylene (EPP) foam has witnessed several applications in the automotive industry including safety and sound deadening. In addition, automotive expanded polypropylene (EPP) foam are used in heat recovery units, hot water valve insulation, and other lightweight rigid structures. As automotive expanded polypropylene (EPP) foam can sustain multiple impacts and returns to its original shape without any deformation, it is highly used for safety applications. Automotive expanded polypropylene (EPP) foam is widely used in other automotive parts and systems such as seating and other interior components.