Patent ID: 7527856
Filing Date: 2009-05-05
Classification: B32B,C08K,E04F,Y10T

Abstract:
1. Method for manufacturing a layered floor panel; said floor panel comprising a substrate, one or more layers on top of said substrate and at least one backing layer underneath said substrate, said substrate being a glued and pressed wood-based board comprising a material selected from the group consisting of MDF, HDF, particle board, oriented structural board and multiplex; said one or more layers at least comprising a wear resistant surface layer filled with wear resistant additives as a top layer and a decorative covering layer; said wear resistant surface layer and said decorative covering layer extending over substantially the whole surface of the panel; at least one of said wear resistant surface layer and said decorative covering layer including a resin impregnated paper layer, said wear resistant surface layer and said decorative covering layer being substantially free from conductive fillers in the form of fibers; said floor panel containing at least one antistatic agent distributed in said resin; wherein the method at least comprises the steps of: dosing and mixing said antistatic agent into the impregnating composition for said resin impregnated paper layer; impregnating said paper layer, thereafter drying said resin impregnated paper layer; and thereafter stacking at least said wear resistant surface layer, said decorative covering layer, said substrate and said backing layer upon each other and consolidating said layers and substrate to form a plate-shaped direct pressure laminate (DPL) by means of hot pressing.