A decorative substrate consisting of a paper base sheet coated with a thermoplastic material, involving a novel technique for coating and embossing the substrate. The paper sheeting is supplied with a thermoplastic material, as by coating or extrusion. The coated sheet is heated to adequately soften...http://www.google.fr/patents/US5155604?utm_source=gb-gplus-shareBrevet US5155604 - Coated paper sheet embossed with a diffraction or holographic pattern
Coated paper sheet embossed with a diffraction or holographic pattern
