Apparatus and operating systems for manufacturing impregnated wood
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United States of America Patent
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Oct 13, 2015
Grant Date -
Apr 26, 2012
app pub date -
Apr 9, 2010
filing date -
Apr 9, 2009
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Abstract
Furfurylated wood produced in a two-chamber system in which monomer/oligomer impregnation in an impregnation chamber is followed by successive stages of drying and curing. Physical properties of wood under treatment are measured, recorded and referenced into a database that accumulates wood species data relating to applied temperature and pressure profiles, physical properties and appearance of intermediate and finished samples of wood and also chemical treatment regimes, including soak time and monomer/oligomer concentrations. During drying and curing, monitoring of process parameters, including water removal and/or atmospheric conditions, are used by a controller both to control and determine a state of process completion by comparing recorded data with historically accumulated data or process set point conditions. Physical and/or chemical attributes of finally processed wood are used in an automated control loop to modify, reactively or in real time, applied treatment regimes for specific wood species and wood profiles.
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