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AssigneeMasonite Corporation
InventorsCraig R. Lindquist, John T. Clarke, Peter P. S. Chin, Michael J. MacDonald, J. Peter Walsh
Estimating the term…
An oriented strand board (OSB)-fiberboard composite structure is comprised of a baseboard having three wood strand layers, the wood strands being oriented in space with respect to a board forming machine such that a core layer is comprised of wood strands oriented generally in a random or cross-machine direction and each adjacent layer is comprised of coarse and fine wood strands oriented generally in the machine direction. In a preferred embodiment, the wood strands comprising each adjacent OSB layer are formed with the coarsest strands located nearest the core layer and the finest strands are located nearest the outer surfaces of each outer board layer. The OSB-fiberboard composite product is clad with a wood fiber overlay on one major surface of the baseboard. The composite board is manufactured without warping, by providing particular OSB layer thicknesses, such that the lower OSB layer is about 25% to about 35% thicker than the OSB layer bonded to the fiberboard.
A non-warping oriented strand board-fiberboard composite structure comprising a multi-layer oriented strand baseboard having a plurality of wood strand layers, including a central layer formed from wood strands oriented generally in a random or cross-machine direction sandwiched between two adjacent layers formed from wood strands oriented in a direction generally perpendicular to said central layer;
A non-warping oriented strand board-fiberboard composite structure comprising a plurality of layers of a man-made board, each layer loosely formed separately and disposed one above the other, wherein a top layer is a fiberboard layer bonded to a first layer of oriented strand board having wood strands of varying dimensions oriented in the machine direction;
Dependencies are inferred from the claim text.