Back to results
US 4,283,456 AGranted
Permeation resistant covering material
AssigneeGAF Corporation
InventorWalter Creasy
Life of this patent
Estimating the term…
Abstract
Sheet vinyl covering material having a moisture permeable backing layer of material such as asbestos felt which is dimensionally stable under varying moisture conditions and resistant to degradation from water. The backing layer is sealed on one side with a layer of vinyl halide-vinylidene halide copolymer which is overlaid with a layer of open cellular foamed resinous material. The sheet vinyl laminate also has a resinous wear layer overlying the foamed layer.
Claims7
Sheet-type covering material comprising:
- (a) a moisture permeable backing layer which is dimensionally stable under varying moisture conditions and resistant to degradation from water;
- (b) an intermediate open-cellular foamed resinous layer overlying the backing layer;
- and
- (c) a resinous wear layer overlying the intermediate layer;
- said backing layer being sealed at its surface adjacent the intermediate layer with a discrete continuous vinyl halidevinylidene halide polymer latex seal coat.
2 more elements
Dependencies are inferred from the claim text.