Oriented strand board panel having improved strand alignment...

Chemistry: electrical current producing apparatus – product – and – Fluid active material or two-fluid electrolyte combination... – Active material in solution

Reexamination Certificate

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C428S111000, C428S112000, C428S113000, C428S114000, C428S292400

Reexamination Certificate

active

07547488

ABSTRACT:
An oriented strand board panel and a method for making the same are provided. The OSB panel has at least three layers, namely, a top surface layer, a core layer, and a bottom surface layer. A first cover layer may be provided on the top surface layer. Likewise, a second cover layer may be provided underneath the bottom surface layer. The first cover layer and/or the second cover layer may have a smaller strand angle, defined by an average deviation of strands from a longitudinal axis, than the top surface layer and the bottom surface layer. The smaller strand angles for the first cover layer and/or the second cover layer provide the OSB panel with greater stiffness and strength along the strong direction of the panel without significant compromise of strength and/or stiffness in the weak direction of the panel.

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