Patent ID: 6761008
Filing Date: 2004-07-13
Classification: B29C,B29L,B32B,E04F,Y10T

Abstract:
A spline for connecting two or more surface covering thermoplastic planks together, said spline comprising a polymeric material having an elongated shape and a width and height that are perpendicular to a direction of elongation of the spline, wherein said width is sufficient to fit into and extend outside of a groove in a side edge of a first plank and fit into a respective groove in a side edge of a second plank, said polymeric material comprising a rigid thermoplastic material in a central portion of the spline and a soft thermoplastic material at the top and bottom surfaces of the spline, wherein each of said top and bottom surfaces has a surface area and about 80% or more of the surface area of at least one of the top and bottom surfaces is covered with said soft thermoplastic material, and wherein at least one surface of said spline includes a bonding agent.