METHOD OF OBTAINING MODIFIED WOOD "DREVIT" AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2012 - IPC B27K3/08 

FIELD: wood-working industry.

SUBSTANCE: method of obtaining the modified wood includes simultaneous drying, impregnation by immersion in the impregnating composition and action on the blank with acoustic field. Immersion of the blank in the impregnating composition, its subsequent removing, and at least partial cooling is carried out in an inert gas medium which molecular weight is greater than the molecular weight of oxygen. Before filling with inert gas the space above the surface of the impregnating composition is preliminary vacuumised, and the impregnating composition before immersing the blank is heated to a temperature of 140-230°C. The device for obtaining the modified wood comprises drying and impregnating chamber (1) with a cover (2), filled with the impregnating composition (3), in which the blank (4) is placed, and the source of acoustic energy (5) connected to the drying and impregnating chamber. The drying and impregnation chamber is provided with a heater (6) which provides heating of the impregnating composition to a temperature of 140-230°C, and the cover (2) of the drying and impregnating chamber is made leakproof and is provided with at least one pipe (7) connected to systems of vacuumising and filling with inert gas.

EFFECT: obtaining high quality characteristics of the modified wood.

8 cl, 1 dwg