Method for determining the abrasion resistance of at least one wear layer arranged on a carrier plate

Patent metadata

Field	Value
Publication number	US-9958382-B2
Application number	US-201615564594-A
Country	US
Kind code	B2
Filing date	Mar 21, 2016
Priority date	Apr 9, 2015
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

A method for determining the abrasion resistance of at least one wear layer arranged on a carrier plate, including: capturing at least one NIR spectrum of the wear layer arranged on the at least one carrier plate using at least one NIR detector and determining the abrasion resistance of the at least one wear layer by comparing the NIR spectrum for the abrasion resistance that is to be determined with at least one NIR spectrum ascertained for at least one reference sample by multivariant data analysis (MDA).

First claim

What is claimed is:

1. A method for determining the abrasion resistance of at least one wear layer arranged on at least one core board comprising the following steps:
recording at least one NIR spectrum of the at least one wear layer arranged on the at least one core board
a) before hardening of the at least one wear layer,
b) after hardening of the at least one wear layer, or
c) before and after hardening of the at least one wear layer with the at least one core board with use of at least one NIR detector in the wavelength range from 500 nm to 2500 nm;
by means of multivariate data analysis (MDA), determining the abrasion resistance of the at least one wear layer by comparing the NIR spectrum recorded for determining the abrasion resistance of the at least one wear layer with at least one NIR spectrum recorded for at least one reference sample of the at least one wear layer with known abrasion resistance,
where the at least one NIR spectrum recorded for the at least one reference sample with known abrasion resistance of the at least one wear layer has been determined in advance a) after hardening or b) before and after hardening with use of the same NIR detector in the wavelength range from 500 nm to 2500 nm.

2. The method as claimed in claim 1 , wherein the abrasion resistance of the at least one wear layer is determined before hardening of the wear layer within a production line for the board.

3. The method as claimed in claim 1 , wherein the abrasion resistance of the at least one wear layer is determined after hardening of the wear layer outside of a production line for the board.

4. The method as claimed in claim 1 , wherein the abrasion resistance of the at least one wear layer is determined before hardening of the wear layer within a production line for the board and after hardening of the wear layer outside of the production line for the board.

5. The method as claimed in claim 1 , wherein the abrasion resistance of the at least one wear layer of the at least reference sample has been determined before or after hardening on the basis of at least one individual sample taken from the hardened reference sample.

6. The method as claimed in claim 5 , wherein the abrasion resistance of the wear layer of the reference sample is determined on the basis of at least one individual sample taken from the reference sample.

7. The method as claimed in claim 6 , wherein the abrasion resistance of the wear layer of the reference sample is determined in accordance with DIN EN 13329:2009 (D).

8. The method as claimed in claim 1 , wherein the reference sample with known abrasion resistance of the wear layer comprises a wear layer applied on a core board, where core board and wear layer of the reference sample are of the same type as the test sample made of core board and wear layer.

9. The method as claimed in claim 1 , wherein the at least wear one layer is selected from the group comprising a) at least one heat-curable protective layer and/or b) at least one UV-curable and/or electron-beam-curable (EBC) protective layer.

10. The method as claimed in claim 1 , wherein the at least one wear layer comprises abrasion-resistant particles.

11. The method as claimed in claim 10 , wherein the abrasion-resistant particles are selected from the group comprising aluminum oxides, boron carbides, silicon dioxides and silicon carbides.

12. The method as claimed in claim 1 , wherein the at least one wear layer comprises a quantity of from 5 to 100 g/m 2 of abrasion-resistant particles.

13. The method as claimed in claim 12 , wherein the at least one wear layer comprises a quantity of from 20 to 50 g/m 2 of abrasion-resistant particles.

14. The method as claimed in claim 1 , wherein the thickness of the at least one wear layer is from 10 to 150 μm.

15. The method as claimed in claim 14 , wherein the thickness of the at least one wear layer is from 30 to 80 μm.

16. The method as claimed in claim 1 , wherein the at least one wear layer comprises at least two sublayers.

17. The method as claimed in claim 16 , wherein the quantity applied of the sublayers is identical or different.

18. The method as claimed in claim 16 , wherein the at least one wear layer comprises at least three sublayers applied in succession.

19. The method as claimed in claim 1 , wherein the at least one core board is a wood-composite board.

20. The use of at least one NIR detector for determining the abrasion resistance of the wear layer applied on a core board by a method as claimed in claim 1 , within and outside of a production line for producing boards.

Assignees

• Flooring Technologies Ltd

Inventors

• Denk Andre
• Kalwa Norbert

Classifications

• G01N2021/8427

  Coatings · CPC title

• G01N21/8422

  Investigating thin films, e.g. matrix isolation method · CPC title

• G01N3/56 Primary

  Investigating resistance to wear or abrasion · CPC title

• G01N21/359 Primary

  using near infrared light · CPC title

• G01N21/3563

  for analysing solids; Preparation of samples therefor · CPC title