Patent ID: 6849221

Claim:
A decorative floor covering comprising a backing layer, a substrate layer, and a surface layer, wherein the backing layer is comprised of one of a foaming sub-layer and a mechanical foaming sub-layer, wherein the surface layer is comprised of a printing sub-layer, and a skin sub-layer, and wherein a surface treating sub-layer is formed on the skin sub-layer by UV curing a surface treatment composition comprising urethaneacrylate oligomer comprised of 10 to 20 weight parts of soft type urethaneacrylate oligomer, and 25 to 35 weight parts of hard type urethaneacrylate oligomer; acrylate based monomer comprised of 5 to 10 weight parts of single functional group monomer, 15 to 25 weight parts of bi-functional group monomer, and 10 to 25 weight parts of tri-functional group monomer; photoinitiator comprised of 1 to 5 weight parts of acetophenone, and 0.1 to 2 weight parts of benzophenone; 0.5 to 3 weight parts of reactive or non-reactive silicon additive; 3 to 10 weight parts of silica or wax coated silica matting agent; and 0.1 to 2 weight parts of amine reaction promoter.