Patent ID: 6933043
Filing Date: 2005-08-23
Classification: B32B,C08J,Y10T

Abstract:
1. A decorative floor covering comprising: (i) a surface treated layer; (ii) a polyethylene terephthalate film layer; (iii) a polyvinyl chloride resin intermediate layer wherein the polyvinyl chloride resin intermediate layer is a sheet having a thickness of 0.1 to 0.2 mm manufactured by pressure rolling in a calendar a polyvinyl chloride resin composition comprising 100 parts of polyvinyl chloride resin, 25 to 50 weight parts of dioctyl phthalate, 50 to 150 weight parts of calcium carbonate, 3 to 5 weight parts of titanium oxide, and 2 to 5 weight parts of heat stabilizer; (iv) a polyvinyl chloride resin substrate layer wherein the polyvinyl chloride resin substrate layer is a non-foamed polyvinyl chloride sheet manufactured by kneading a polyvinyl chloride resin composition comprising 100 weight parts of polyvinyl chloride resin, a plasticizer of 30 to 50 weight parts of dioctyl phthalate, heat resistant stabilizers of 3 to 5 weight parts of barium-zinc based compound and 3 to 5 weight parts of epoxy compound, and fillers of 200 to 400 weight parts of calcium carbonate and 3 to 5 weight parts of pigment in a rolling mill having a temperature of 160 to 190° C., and pressure rolling it to a thickness of 0.8 to 1.3 mm; (v) an adhesive layer; and (vi) a light back layer.