A method of producing embossed decorative thermoplastic sheets by forming a laminate including a printable composition, having a relatively low viscosity and containing an effective amount of a blowing agent, between thermoplastic resin sheets. The printable composition is applied in a design pattern...http://www.google.es/patents/US4844849?utm_source=gb-gplus-sharePatente US4844849 - Method of making embossed decorative sheets
