B - Operations – Transporting – 27 – N
Patent
B - Operations, Transporting
27
N
B27N 7/00 (2006.01)
Patent
CA 2322067
A process for post-formation treatment of composite wood products formed from lignocellulosic or cellulosic material to improve dimensional stability. The process involves raising the moisture content of the product after forming of the product, applying pressure to the product, and then subjecting the compressed product to high frequency heating. Apparatus for carrying out the process is also disclosed. The process and apparatus create a finished composite wood product that has significantly improved dimensional stability without adversely affecting other physical and mechanical properties of the product. In particular, thickness swelling of the composite product when exposed to moisture is significantly reduced. In testing, a 60% reduction in thickness swell is observed at all points measured across a test sample.
Fetherstonhaugh & Co.
Forintek Canada Corp.
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