Surface covering materials

Abstract

This invention provides a process for the production of surface covering materials having a textured effect which comprises (a) applying a layer of a first foamable resinous composition on to a substrate; (b) applying a second foamable resinous composition on to selected areas of the surface of the said first foamable resinous composition; (c) applying at least one essentially non-foaming layer over the said first and second foamable resinous compositions; and (d) heating to effect foaming of the first and second foamable resinous compositions whereby a surface covering material having a textured effect is produced; the said first and second foamable resinous compositions being selected whereby upon heating substantial foaming of the said second foamable resinous compositions occurs before any substantial foaming of the said first foamable resinous composition. The invention further provides a surface covering material having a textured effect which comprises a substrate or backing layer, a layer of a first foamed resinous composition on the substrate or backing layer, a second foamed resinous composition on selected areas of the said first foamed resinous composition and a layer of an essentially non-foamed resinous composition over the said first and second foamed resinous compositions; the surface of the said material being at a higher level in areas with both first and second foamed resinous composition applied than in other areas of the surface covering material; and the said second foamed resinous composition having a structure characteristic of a resinous composition which has foamed to a significant extent whilst supported by a non-foaming substrate.

Dependencies are inferred from the claim text.