A process and a polyurethane material for molding a semi-rigid integral skin foam which comprising an integral skin having a low degree of foaming and a core having a high degree of foaming. The process includes evacuating a mold cavity to reduce the pressure thereof below atmospheric pressure; injecting...http://www.google.com.au/patents/US5633289?utm_source=gb-gplus-sharePatent US5633289 - Process for molding an integral skin foam and a polyurethane material for molding the same
