US 11,752,657 B2
Coated multi-ply wood panel and method of producing a core board
Kasperi Sokka, Espoo (FI)
Assigned to Metsäliitto Osuuskunta, Espoo (FI)
Appl. No. 16/462,969
Filed by Metsäliitto Osuuskunta, Espoo (FI)
PCT Filed Nov. 22, 2017, PCT No. PCT/FI2017/050810
§ 371(c)(1), (2) Date May 22, 2019,
PCT Pub. No. WO2018/096123, PCT Pub. Date May 31, 2018.
Claims priority of application No. 20165882 (FI), filed on Nov. 22, 2016.
Prior Publication US 2019/0375128 A1, Dec. 12, 2019
Int. Cl. B27D 1/06 (2006.01); B27M 3/00 (2006.01); B32B 5/02 (2006.01); B32B 21/10 (2006.01); B27N 3/04 (2006.01); B27N 7/00 (2006.01)
CPC B27D 1/06 (2013.01) [B27M 3/0053 (2013.01); B27N 3/04 (2013.01); B27N 7/005 (2013.01); B32B 5/02 (2013.01); B32B 21/10 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of producing a multi-ply wood panel, comprising the steps of:
providing a plurality of wood-based layers;
providing an adhesive for bonding said wood-based layers to each other;
arranging the wood-based layers and the adhesive in alternating order to form a stack, said stack having two opposite faces;
applying a self-supporting sheet of fibrillated fibers on at least one of the two opposite faces of the stack along with further adhesive for bonding the self-supporting sheet to the at least one opposite face to form a modified stack; and
pressing the modified stack to form the multi-ply wood panel having the at least one opposite face having the self-supporting sheet of fibrillated fibers applied thereon,
wherein the stack, formed by the alternating layers of the wood-based layers and the adhesive for bonding the wood-based layers to each other, is not pressed at all prior to the applying of the self-supporting sheet and pressing the modified stack.