Abstract: A plastic planar structure, comprising: a bearing layer which contains plastic foam; and an upper layer, also containing plastic foam, which adheres on the bearing layer in a material lock, and a method for manufacturing a plastic planar structure, wherein: a foamed or foamable first plastic material of a web-shaped or mat-shaped bearing layer is provided, onto which a foamable second plastic material is applied, and foamed.

Abstract: A covering in the form of a mat or web, comprising a substrate formed as a mesh product or fabric and plastic foam enveloping the substrate which define lines of beaded caterpillar ties, extending longitudinally in a first direction, and rows of thinner connecting ties, extending longitudinally in a second direction substantially transverse to the first direction, with gaps therebetween. The caterpillar ties each comprise a constriction extending continuously along each transverse edge of the respective caterpillar tie between adjacent connecting ties over an upper or lower side of the respective caterpillar tie.