Process for the modification of wood
AssigneeRutgerswerke Aktiengesellschaft
InventorsEberhard Giebeler, Bernhard Bluhm, Arnold Alscher, Klaus Moraw, Gerd Collin, Heinzpeter Nilles
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Abstract
A process is described for the modification of wood and wood products by heat treatment in a closed, heatable vessel, wherein the water content of the starting material is controlled to be no higher than 10% by weight.
Claims7
A method for the modification of wood in order to obtain dimensional stability which comprises subjecting wood which has a moisture content not greater than 8% to a heat treatment at an elevated temperature of from 160.degree. C. to 240.degree. C. in a closed heatable vessel under pressure, said vessel having been evacuated prior to the heat treatment to exclude oxygen in excess of 10 volume percent and permitting products escaping from the wood during the thermal treatment to remain in the reaction vessel for the entire reaction time, and thereby obtaining a dimensionally stable wood product which will be resistant to formation of cracks.
Dependencies are inferred from the claim text.