US 11,814,851 B2
Floor board and method for manufacturing such floor boards
Dieter D'Hondt, Sint-Andries (BE); and Aaron Shaw, High Point, NC (US)
Assigned to FLOORING INDUSTRIES LIMITED, SARL, Bertrange (LU)
Filed by FLOORING INDUSTRIES LIMITED, SARL, Bertrange (LU)
Filed on Nov. 4, 2021, as Appl. No. 17/518,748.
Application 17/518,748 is a continuation of application No. 16/808,745, filed on Mar. 4, 2020, granted, now 11,473,315.
Application 16/808,745 is a continuation of application No. 15/571,576, granted, now 10,655,338, issued on May 19, 2020, previously published as PCT/US2016/031170, filed on May 6, 2016.
Claims priority of provisional application 62/160,283, filed on May 12, 2015.
Prior Publication US 2022/0056705 A1, Feb. 24, 2022
Int. Cl. B32B 3/10 (2006.01); E04F 15/02 (2006.01); E04F 15/10 (2006.01)
CPC E04F 15/02038 (2013.01) [E04F 15/102 (2013.01); E04F 15/107 (2013.01); Y10T 428/24777 (2015.01)] 15 Claims
OG exemplary drawing
 
1. A method for manufacturing a floor board; said floor board comprising a decorative surface layer applied to a substrate, said method comprising the steps of:
providing a substrate material comprising MDF or HDF material;
applying a decorative surface layer to a top surface of said substrate material;
dividing said substrate material into planks having approximately a size of said floor board;
profiling an edge of said planks; said MDF or HDF material being exposed at said edge;
impregnating said edge with an impregnation agent and applying a coating agent on said edge;
wherein the impregnation agent and the coating agent are applied as a mixture in a suspension or emulsion;
wherein said MDF or HDF material has an average density of more than 750 kg per cubic meter and comprises a higher density region at least near said decorative surface layer, wherein said higher density region has a density of 900 kilograms per cubic meter or more.