Composite engineered wood material piece composed of an HDF mid-layer and an OSB bottom layer

摘要

A composite engineered wood material piece, such as a floor board or wood material sheet, is comprised of a thin top quality wood material layer bonded onto a high density fiber board (HDF) material which is itself bonded onto a thick bottom substrate oriented strand board (OSB) material layer. The OSB material layer has its particle orientation in the top surface disposed parallel to the grain orientation in the top quality wood material layer. The HDF layer resists to the stress exhibited in the top layer and acts has a transition layer to secure the top layer to the bottom layer. It also strengthens the composite floor board or wood material sheet.

主权项

1. A composite engineered wood material piece comprising a top layer formed of a quality wood product bonded to a top surface of a middle layer formed from a high density fiber board (HDF) material, and a bottom layer formed of oriented strand board (OSB) material bonded to a bottom surface of said high density fiber board, said oriented strand board having a particle orientation in a top surface thereof extending parallel to the grain orientation of said top layer, said middle layer resisting to stress exhibited by said top layer and providing improved bonding to said bottom layer and thus acting has a strengthening and transition layer between said top layer and said bottom layer, and wherein said bottom layer has a thickness greater than the thickness of said middle layer.