Plastic planar structure comprising a foamed upper layer

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.

Description

Example embodiments of the invention are explained below on the basis of figures. Features disclosed by the example embodiments, each individually and in any combination of features, advantageously develop the subjects of the claims and also the embodiments described above. There is shown:

FIG. 1 a plastic planar structure with a motif;

FIG. 2 a plastic planar structure with a pattern;

FIG. 3 the plastic planar structure of FIG. 2, in a cross-section; and

FIG. 4 an installation for manufacturing the plastic planar structure.

Claims

1. A plastic planar structure, comprising: a) a bearing layer which contains plastic foam;b) and an upper layer, also containing plastic foam, which adheres on the bearing layer in a material lock.

2. The plastic planar structure according to claim 1, wherein the layers are fused together.

3. The plastic planar structure according to claim 1, wherein the upper layer only covers partial areas of the bearing layer and wherein the upper layer forms a surface of the plastic planar structure in the partial areas and the bearing layer forms a surface of the plastic planar structure in intermediate areas remaining exposed.

4. The plastic planar structure according to claim 3, wherein the upper layer forms an image, motif, design or pattern on the bearing layer.

5. The plastic planar structure according to claim 1, wherein the bearing layer forms a closed surface.

6. The plastic planar structure according to claim 1, wherein the layers each have an at least substantially uniform thickness over their entire surface and the bearing layer is at least twice as thick as the upper layer.

7. The plastic planar structure according to claim 1, wherein the bearing layer exhibits an at least substantially uniform thickness of at least 1.5 mm over its surface.

8. The plastic planar structure according to claim 1, wherein the bearing layer exhibits an at least substantially uniform thickness of at most 15 mm over its surface.

9. The plastic planar structure according to claim 1, wherein the bearing layer contains a meshed product or a fabric as an inlay and the plastic foam of the bearing layer envelops the inlay.

10. The plastic planar structure according to claim 1, wherein the upper layer consists of plastic foam.

11. The plastic planar structure according to claim 1, wherein the plastic foam of the bearing layer and the plastic foam of the upper layer are formed from the same polymer.

12. The plastic planar structure according to claim 11, wherein the polymer is PVC or an acrylate.

13. The plastic planar structure according to claim 11, wherein the plastic foam of the bearing layer and the plastic foam of the upper layer do not differ in terms of composition.

14. The plastic planar structure according to claim 11, wherein the plastic foam of the bearing layer and the plastic foam of the upper layer each exhibit a different colour.

15. The plastic planar structure according to claim 1, wherein the bearing layer is additionally printed with at least one colour.

16. The plastic planar structure according to claim 1, wherein the bearing layer is superficially compressed on a lower side facing away from the upper layer.

17. The plastic planar structure according to claim 1, wherein the bearing layer is embossed on its lower side.

18. A method for manufacturing a plastic planar structure, comprising: a) providing a foamed or foamable first plastic material of a web-shaped or mat-shaped bearing layer;b) applying a foamable second plastic material onto the first plastic material; andc) foaming at least the second plastic material.

19. The method according to claim 18, wherein the first plastic material is foamed or merely gelled before the second plastic material is applied.

20. The method according to claim 18, wherein: the first plastic material is web-shaped and continuously conveyed;and the second plastic material is applied onto the first plastic material during conveying.

21. The method according to the claim 18, wherein the first plastic material is foamed during conveying.

22. The method according to claim 21, wherein the first plastic material is gelled and the second plastic material is applied onto the gelled first plastic material and both plastic materials are foamed.

23. The method according to claim 18, wherein the first plastic material is applied onto an inlay formed as a meshed product or a fabric, and gelled.

24. The method according to claim 18, wherein the second plastic material is applied in a paste-like form.

25. The method according to claim 18, wherein the second plastic material is only applied onto partial areas of the surface of the first plastic material.

26. The method according to claim 18, wherein the second plastic material is applied by serigraphy.