Method to produce a veneer element and a veneer element

Patent metadata

Field	Value
Publication number	US-11975508-B2
Application number	US-202318157811-A
Country	US
Kind code	B2
Filing date	Jan 20, 2023
Priority date	Jan 9, 2019
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

A method to produce a veneer element, including defects and dense portions. The method includes providing a substrate, providing a sub-layer, including a binder and colored filler particles, applying the sub-layer on a first surface of the substrate, applying a veneer layer on the sub-layer, and applying pressure, preferably heat and pressure, to the veneer layer and/or the substrate, thereby forming a veneer element wherein, after pressing, the sub-layer is visible through a defect of the veneer element such as crack, cavity, hole and/or knot of the veneer layer. Also, a veneer element.

First claim

The invention claimed is:

1. A veneer element, comprising
a substrate,
a sub-layer arranged on a first surface of the substrate, the sub-layer comprising a binder and coloured filler particles, wherein the coloured filler particles are organic filler particles, wherein an L value of the coloured filler particles is less than 67, in a CIELAB colour space model, and wherein a size of the coloured filler particles is at least 0.1 μm in diameter, and
a veneer layer comprising defects and dense portions, the veneer layer being arranged on the sub-layer,
wherein the sub-layer is visible through at least one of the defects of the veneer layer.

2. The veneer element according to claim 1 , comprising colored portions at the defects and non-colored portions at said dense portions.

3. The veneer element according to claim 1 , wherein the at least one of the defects of the veneer layer is at least partially filled with material originating from the sub-layer, comprising the coloured filler particles.

4. The veneer element according to claim 1 , wherein the dense portions of the veneer layer are substantially free from the coloured filler particles originating from the sub-layer.

5. The veneer element according to claim 1 , wherein at least 70% of the coloured filler particles are of a size between 0.1 μm and 1 mm in diameter.

6. The veneer element according to claim 1 , wherein at least 70% of the coloured filler particles are of a size between 0.1 μm and 300 μm in diameter.

7. The veneer element according to claim 1 , wherein the L value of the coloured filler particles is less than 65, in the CIELAB colour space model.

8. The veneer element according to claim 1 , wherein the organic filler particles are selected from coffee, cacao, vanilla, bark, and apple fibre.

9. The veneer element according to claim 1 , wherein the organic filler particles are coffee, cacao, vanilla, and/or bark.

10. The veneer element according to claim 1 , wherein the coloured filler particles are particles obtained by torrefaction of biomasses.

11. The veneer element according to claim 1 , wherein the coloured filler particles are particles obtained by torrefaction of wood fibre.

12. The veneer element according to claim 1 , wherein the binder is a thermoplastic binder.

13. The veneer element according to claim 1 , wherein the binder is a thermosetting binder.

14. The veneer element according to claim 1 , wherein the substrate is wood based, and the veneer element is a building panel.

15. The veneer element according to claim 1 , wherein the veneer element is a floor panel, a wall panel, or a furniture panel.

16. The veneer element according to claim 1 , wherein the at least one of the defects of the veneer layer is a crack, cavity, hole and/or knot.

Assignees

• Vaelinge Innovation Ab

Inventors

• Hedlund Anette
• Nilsson Sofia

Classifications

• B32B21/14 Primary

  comprising wood board or veneer · CPC title

• B27N3/06

  Making particle boards or fibreboards, with preformed covering layers, the particles or fibres being compressed with the layers to a board in one single pressing operation · CPC title

• B27N7/005

  Coating boards, e.g. with a finishing or decorating layer · CPC title

• B32B21/02

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

• B32B37/24

  with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate (B32B37/15 takes precedence) · CPC title