Floor panel, methods for manufacturing laminate panels and method for treating material sheets applied herewith

1. Floor panel consisting at least of a substrate and a top layer located on a first surface of the substrate;

wherein said top layer comprises a printed decor and synthetic material, and wherein the floor panel is provided with a balancing layer immediately located adjacent to an underside defined as a second side of said substrate opposite the first surface, the substrate being porous and the synthetic material of the balancing layer penetrating at least partially into the substrate;

wherein said balancing layer substantially consists of a synthetic material layer which is free from material sheets.

2. The floor panel of claim 1 , wherein the floor panel is a laminate floor panel of the DPL type.

3. The floor panel of claim 1 , wherein said substrate substantially consists of MDF or HDF.

4. The floor panel of claim 1 , wherein the total weight of material sheets, which are located in the top layer, is situated between 50 and 250 g/m 2 .

5. The floor panel of claim 1 , wherein the balancing layer is made thinner than said top layer.

6. The floor panel of claim 1 , wherein the balancing layer comprises less synthetic material than said top layer.

7. The floor panel of claim 1 , wherein as the synthetic material, at least one thermo-hardening resin is applied in the top layer as well as in the balancing layer.

8. The floor panel of claim 1 , wherein said printed decor is provided on material sheets located in the top layer.

9. The floor panel of claim 1 , wherein synthetic material of the balancing layer penetrates at least 0.1 mm into the substrate.

10. The floor panel of claim 9 , wherein the synthetic material of the balancing layer penetrates at least 0.5 mm into the substrate.

11. The floor panel of claim 1 , wherein the synthetic material of the top layer and the synthetic material layer of the balancing layer are made of melamine resin.

12. The floor panel of claim 11 , wherein the melamine resin is a melamine formaldehyde resin.

13. Floor panel consisting at least of a substrate and a top layer located on a first surface of the substrate;

wherein said top layer comprises a printed decor and synthetic material, and wherein the floor panel is provided with a balancing layer immediately located adjacent to an underside defined as a second side of said substrate opposite the first surface, the substrate being porous and the synthetic material of the balancing layer penetrating at least partially into the substrate;

wherein said balancing layer substantially consists of a synthetic material layer which is free from material sheets;

wherein the floor panel is a laminate floor panel of the DPL type;

wherein said substrate substantially consists of MDF or HDF;

wherein the total weight of material sheets, which are located in the top layer, is within the range between 50 and 250 g/m 2 ;

wherein the balancing layer is made thinner than said top layer;

wherein the balancing layer comprises less synthetic material than said top layer;

wherein as the synthetic material, at least one thermo-hardening resin is applied in the top layer and in the balancing layer;

wherein said printed decor is provided on material sheets located in the top layer.

14. The floor panel of claim 13 , wherein synthetic material of the balancing layer penetrates at least 0.1 mm into the substrate.

15. The floor panel of claim 14 , wherein the synthetic material of the balancing layer penetrates at least 0.5 mm into the substrate.

16. The floor panel of claim 13 , wherein the synthetic material of the top layer and the synthetic material layer of the balancing layer are made of melamine resin.

17. The floor panel of claim 16 , wherein the melamine resin is a melamine formaldehyde resin.