Method of making dimensionally stable composite board and...

Details Method of making dimensionally stable composite board and... Method of making dimensionally stable composite board and...

B - Operations, Transporting

27

N

18/952

B27N 7/00 (2006.01) B27N 1/00 (2006.01)

Patent

CA 1215510

ABSTRACT Disclosed is a method of making a dimensionally stable composite board product made from a mixture of parti- cles or a cellulose material and binder and a composite board so produced by such method. Dimensional stability is in reference to the resistance to thickness swelling when the board is subjected to high humidity or moisture conditions. The method and composite board displaying the attribute of improved dimensional stability involves subjecting the particles of cellulosic material to a pressurized steam treatment and then making the composite board under heat and pressure. When compared to conventional composite board that has not been subjected to the pretreatment, the difference in thickness swelling is significant.

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