A novel polyurethane foam is shown which uses ground vehicle tires as a filler material. A method of manufacturing a carpet pad using the novel polyurethane composition is also shown. A frame is provided to which is mounted a conveyor belt. The conveyor belt feeds a first liner having an exposed...http://www.google.es/patents/US5846461?utm_source=gb-gplus-sharePatente US5846461 - Method of manufacturing carpet pads from a polyurethane foam composition
Method of manufacturing carpet pads from a polyurethane foam composition
