Patent ID: 7155871
Filing Date: 2007-01-02
Classification: B32B,E04F,Y10T

Abstract:
1. A floor plank comprising, a) a first layer of flexible plastic sheet material having a first polygonal shape with at least two side edges, a first upper surface with a design pattern and a first lower surface, the first upper surface with the design pattern constituting the top surface of the floor plank, b) a second layer of flexible plastic sheet material having a second polygonal shape with at least two side edges, a second upper surface and a second lower surface, c) said first and second layers being laminated together in offset relationship, and wherein the first lower surface of the first layer contacts the second upper surface of the second layer, d) the offset lamination of said first and second layers defining a first offset marginal portion of said first layer and a second offset marginal portion of said second layer, said first marginal portion of said first layer extending beyond at least one of the side edges of said second layer, and said second marginal portion of said second layer extending beyond at least one of the side edges of said first layer, e) said first offset marginal portion having a first marginal lower surface that is part of the first lower surface of said first layer, and said second offset marginal portion having a second marginal upper surface that is a part of the second upper surface of said second layer, the first marginal lower surface and the second marginal upper surface having an exposed adhesive coating, f) the first and second layers having respective predetermined thicknesses to enable the laminate of the first and second layers to have a flexibility that permits said laminate to conform to surface contours of a floor base upon which the floor plank is laid, g) the plastic sheet material of said second layer having a predetermined yieldability to surface irregularities of the floor base upon which the floor plank is laid, such that said second layer, when lying in flat contact on the floor base can conform to surface irregularities of the floor base.