Composite engineered floor board having an oriented strand board (osb) stabilizing base

Abstract

An engineered floor board or wood panel for the fabrication thereof is comprised of a thin top wood layer fabricated from a quality wood material. The top wood layer is glued to a core layer wood product having a grain orientation disposed transverse to the longitudinal axis of the top wood layer. A base wood layer is fabricated from oriented strand board (OSB) which is glued to the bottom of the core layer. The base wood layer is fabricated from a single sheet having wood particles and fibers oriented in at least two layers with at least a top layer having its wood particles and fibers generally oriented along the longitudinal axis of the top wood layer and transverse to use core layer to substantially prevent displacement and deformation of the core layer caused by expansion and retraction thereof and thereby preventing deformations in the top wood layer.

1 . An engineered floor board comprising a thin top wood layer having a longitudinal axis, said top wood layer being fabricated from a quality wood material, said top wood layer being glued to a core layer wood product having a flexion strength axis disposed transversely to said longitudinal axis of said top wood layer, said core layer resisting to distortion or the floor board, and a base wood layer glued to a bottom surface of said core layer, said base wood layer being fabricated from a single sheet of oriented strand board (OSB) composed of wood strands generally oriented in at least two layers with a top one of said layers having said strands oriented along said longitudinal axis of said top wood layer and transverse to said flexion strength axis of said core layer to substantially prevent displacement and deformation of said core layer to prevent telegraphy in a top surface of said top wood layer caused by deformation in said core layer and further reducing longitudinal flexion of said floor board. 
     
     
         2 . The engineered floor board as claimed in  claim 1 , wherein said core layer is constituted by a plurality of rectangular wood slats disposed in side-by-side relationship and extending transverse to said longitudinal axis of said top wood layer. 
     
     
         3 . The engineered floor board as claimed in  claim 1 , wherein said base wood layer has a thickness which is substantially equal to the thickness of said core layer. 
     
     
         4 . The engineered floor board as claimed in  claim 1 , wherein said oriented strand board has two or more layers of wood strands, each layer having its strands oriented along a different axis to adjacent layers to provide planar stability of said oriented strand board. 
     
     
         5 . The engineered floor board as claimed in  claim 4 , wherein said layers of wood strands are oriented substantially transverse to an adjacent layer. 
     
     
         6 . The engineered floor board as claimed in  claim 1 , wherein the thickness of said engineered floor board is in the range of from 10 mm to 25 mm. 
     
     
         7 . The engineered floor board as claimed in  claim 2 , wherein said rectangular wood slats are disposed in side-by-side spaced relationship thereby defining grooves therebetween. 
     
     
         8 . The engineered floor board as claimed in  claim 1 , wherein said base wood layer has an internal bond strength of at least 50 to 60 p.s.i. to prevent said displacement and deformation of said core layer caused by expansion and retraction thereof and thereby resisting to longitudinal deformation, cupping and crowning of said engineered floor board to substantially reduce telegraphy. 
     
     
         9 . The engineered floor board as claimed in  claim 2 , wherein said base wood layer is a three layer oriented strand board (OSB), each layer being composed of wood strands oriented in a generally common direction and glued together under compression, a top layer of said OSB having its strands oriented parallel to said longitudinal axis of said top wood layer, an intermediate layer of said OSB having its strands oriented transverse to said top layer thereof, and a bottom layer of said OSB having its strands oriented parallel to said top layer of said OSB. 
     
     
         10 . The engineered floor board as claimed in  claim 9 , wherein said layers of said OSB have a thickness ratio of 30% top layer, 40% intermediate layer and 30% bottom layer. 
     
     
         11 . The engineered floor board as claimed in  claim 9 , wherein said layers of said OSS have a thickness ratio of 40% top layer, 20% intermediate layer and 40% bottom layer. 
     
     
         12 . The engineered floor board as claimed in  claim 9 , wherein said layers of said OSB have a thickness ratio of 20% top layer, 60% intermediate layer and 20% bottom layer. 
     
     
         13 . The engineered floor board as claimed in  claim 6 , wherein said thickness of said engineered floor board is composed of the combination of the following layer thickness, a top layer in the range of 2 to 6 mm, a core layer in the range of 4 to 12 mm, and a base wood layer in the range of 6 to 12 mm. 
     
     
         14 . The engineered floor board as claimed in  claim 1 , wherein said engineered floor board is formed with one of tongue and groove edge profile, and lap connecting edge profile. 
     
     
         15 . A wood panel for the fabrication of engineered floor boards, said panel comprising a top sheet fabricated from a quality wood material, said top sheet being glued to a core wood sheet having a flexion strength axis disposed transversely to a longitudinal axis of said top sheet, said core wood sheet resists to distortion of said floor board, and a base wood sheet glued to a bottom surface of said core wood sheet, said base wood sheet being fabricated from oriented strand board (OSB) composed of wood strands generally oriented in at least two layers with a top one of said layers having said wood strands oriented along said longitudinal axis of said top sheet to substantially prevent displacement and deformation of said top sheet caused by deformation in said core sheet and further reducing longitudinal flexion of said wood panel. 
     
     
         16 . A wood panel as claimed in  claim 15  wherein said core wood sheet is constituted by a plurality of rectangular wood slats disposed in side-by-side relationship and extending transverse to said longitudinal axis of said top sheet. 
     
     
         17 . A wood panel as claimed in  claim 15  wherein said base wood sheet has a thickness which is substantially equal to the thickness of said core layer. 
     
     
         18 . A wood panel as claimed in  claim 15  wherein said oriented strand board has two or more layers of wood strands, each layer having its strands oriented along a different axis to adjacent layers to provide planar stability of said oriented strand board. 
     
     
         19 . A wood panel as claimed in  claim 18 , wherein said layers of wood strands are oriented substantially transverse to an adjacent layer. 
     
     
         20 . A wood panel as claimed in  claim 15  wherein said base wood layer has an internal bond strength of at least 50 to 60 p.s.i. to prevent said displacement and deformation of said core layer caused by expansion and retraction thereof and thereby resisting to longitudinal deformation, cupping and crowning of said engineered floor board.