Method for treating lignocellulosic material

Details Method for treating lignocellulosic material Method for treating lignocellulosic material

B - Operations, Transporting

27

K

B27K 3/02 (2006.01) B27K 3/20 (2006.01)

Patent

CA 2573211

A method for heat treating lignocellulosic material with a water-soluble preservative, such as preferably borate, involves the modification of the lignocellulosic material by heat to a moisture content of 0 to 5%, and preferably as close as possible to 0%. The thermo-treatment of the lignocellulosic material drives out not only free extracellular water but also the intercellular and intracellular water. The process of modification by heat effectively kills the cells, permanently altering their cellular structure, and locking or fixing the preservative in the lignocellulosic material so that the water- soluble preservative does not leach out of the treated lignocellulosic material in the presence of rain water.

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