Mechanically embossed resilient laminar floor material
AssigneeArmstrong Cork Company
InventorWalter J. Lewicki, Jr.
Life of this patent
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Abstract
A process for forming an embossed surface on a laminar floor material which has at least one foam layer. A floor material is formed consisting of a wear layer joined with an expanded foam cushion backing. The floor material is heated rapidly by a high temperature, hot air heater so that primarily the wear layer is heated with very little heating of the cushion backing. The floor material passes between an embossing roll and a back-up roll where the embossing roll engages the surface of the heated vinyl wear layer in proper registration with a printed pattern therebelow. The floor material is cooled and the resultant product has an embossed wear layer with the cushion backing thereunder retaining a substantial portion of its original resiliency.
Claims2
A floor covering material which is composed of a three-layer structure, the lower layer being a backing material, the intermediate full foamed layer being a flexible foamed thermoplastic or thermoset material, and the upper layer being a wear layer;
- the wear layer having an embossed pattern placed on the surface thereof, said embossed pattern being both surface texturing and deep embossing, said wear layer being greater than approximately 1/6 to 1/4 the thickness of the foam layer and being deeply embossed in depth approximately the thickness of the wear layer, the fully foamed intermediate layer in the region of the deep embossing having a substantially undamaged, but compressed, fully foamed, cell structure which is capable, upon reheating of the sheet material, of exerting sufficient stress upon the relieved wear layer to restore the wear layer to its unembossed state.
Dependencies are inferred from the claim text.