Patent ID: 7476435
Filing Date: 2009-01-13
Classification: B32B,B44C,E04F,Y10T

Abstract:
1. A back-grooved laminate wood flooring comprising a high pressure melamine laminate (HPL), an adhesive layer and a waterproof plywood layer laminated from the top, wherein the HPL includes a second core layer, a first core layer, a decorative paper layer and a surface-protective paper layer layered in this order from the bottom, and the waterproof plywood layer has grooves in the back surface, and wherein the first core layer is formed of a kraft paper impregnated in a resol-type phenol resin; the second core layer is formed of a kraft paper impregnated in a melamine resin; the decorative paper layer is formed of a decorative paper impregnated in a melamine resin, the decorative paper being formed of a titanium oxide-containing cellulose paper with a predetermined pattern printed thereon; the surface-protective paper layer is formed of an overlay paper impregnated in a melamine resin, the overlay paper being formed of a cellulose paper with wear-resistant silica or alumina particles uniformly distributed therein; and the waterproof plywood layer is formed of 5-7 veneers with a phenol resin or melamine resin adhesive disposed in-between and pressed in such a manner that the grain directions of the veneers are at right angles to each other.