Method for finishing a wood board

Patent metadata

Field	Value
Publication number	US-10328602-B2
Application number	US-201815966620-A
Country	US
Kind code	B2
Filing date	Apr 30, 2018
Priority date	Nov 20, 2014
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

The disclosure relates to a method for finishing a wood board with an upper face and a lower face. A layer of liquid synthetic resin is first applied at least onto the upper face or the lower face, and at least one paper ply soaked with a synthetic resin is then applied. The structure is then pressed in a press under high pressure and at a high temperature, wherein the synthetic resin melts and is connected to the upper face or the lower face of the wood board. The invention is characterized in that the upper face and/or the lower face is provided while still having a press skin and in an ungrounded state, and the layer is applied so thinly that the liquid synthetic resin is completely drawn into the press skin, the layer is not actively dried, and the paper ply is positioned on the press skin.

First claim

What is claimed is:

1. A process for finishing a wooden composite board with an upper side and an underside, comprising:
firstly applying a layer of liquid synthetic resin at least to the upper side or the underside,
applying at least one decorative paper comprising a synthetic resin and covered with a wear layer consisting of synthetic resin, and
pressing in a press under high pressure and high temperature such that the synthetic resin melts and bonds to the upper side or the underside of the wooden composite board, wherein
the upper side and/or the underside retain a press skin and are provided without surface-grinding and, to form an optimal base for the decorative paper, the liquid synthetic resin penetrates into the press skin, and the synthetic-resin-impregnated decorative paper is placed onto the press skin,
wherein the liquid synthetic resin is a melamine resin or a urea resin or a melamine-urea-resin mixture.

2. The process as claimed in claim 1 , wherein a finishing process is carried out identically on both the upper side and the underside.

3. The process as claimed in claim 1 , wherein the liquid synthetic resin is applied by rolling, spreading, trowelling or spraying.

4. The process according to claim 1 , wherein the layer of the liquid synthetic resin is applied to completely enter the press skin and no active drying of the layer of the liquid synthetic resin takes place.

5. The process as claimed in claim 4 , wherein a quantity applied of the liquid synthetic resin is from 5 to 100 g/m 2 .

6. The process as claimed in claim 5 , wherein the quantity applied of the liquid synthetic resin is from 5 to 50 g/m 2 .

7. The process as claimed in claim 6 , wherein the quantity applied of the liquid synthetic resin is from 5 to 25 g/m 2 .

8. The process as claimed in claim 1 , wherein a ratio of the liquid synthetic resin to water is (60:40) with a tolerance of ±10%.

9. The process as claimed in claim 1 , wherein the liquid synthetic resin comprises additives.

10. The process as claimed in claim 8 , wherein the liquid synthetic resin comprises hardeners and/or wetting agents and/or thermoplastic polymers.

11. The process as claimed in claim 1 , further comprising placing an overlay paper onto the decorative paper.

12. The process as claimed in claim 1 , wherein the wear layer is applied in liquid form.

13. The process according to claim 1 , further comprising scattering synthetic resin particles onto the decorative paper for the wear layer.

14. The process according to claim 1 , wherein a structure is embossed in the wear layer during the pressing of the laminate structure.

15. The process according to claim 14 , wherein the structure corresponds to the decoration.

16. The process according to claim 1 , wherein the decoration is a wood grain or a tile effect.

17. The process according to claim 1 , wherein the wear layer comprises abrasion-resistant particles, in particular consisting of corundum.

Assignees

• Flooring Technologies Ltd

Inventors

• Lehnhoff Ingo
• Oldorff Frank

Classifications

• B32B21/02

  the layer being formed} of fibres, chips, or particles {, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard · CPC title

• B32B2260/028

  Paper layer · CPC title

• B32B21/06

  of paper or cardboard · CPC title

• B32B2307/50

  having particular mechanical properties · CPC title

• B32B2451/00

  Decorative or ornamental articles · CPC title