METHOD FOR IMPREGNATION OF WOOD OR MATERIAL ON WOOD BASIS Russian patent published in 2009 - IPC B27K3/08 B27K3/00 B27K3/02 B27K3/34 

FIELD: construction.

SUBSTANCE: method for impregnation of wood or material on wood basis includes the following stages: a. previous heating of working solution to temperature that exceeds boiling temperature at atmospheric pressure, that is ultrahigh temperature of working solution, and maintenance of sufficient pressure during the whole stage of previous heating for provision of working solution preservation in the form of liquid phase, b. provision of initial preliminary pressure to wood or material on wood basis prior to their introduction in contact with working solution at ultrahigh temperature sufficient for preservation of working solution in the form of liquid phase, c. introduction of wood or material on wood basis in contact with working solution at ultrahigh temperature and at higher pressure, at which working solution is preserved in the form of liquid phase, for stimulation of wood or wood-based material impregnation by solution on liquid base, and assistance in impregnation of wood or material on wood basis with working solution as a result of application of additional hydraulic or pneumatic pressure, d. separation of wood or wood-based material and residual working solution, material of wastes and/or side products, that is pressure bleeding after impregnation for separation of residual working solution, material of wastes and side products of return known as return related to pressure variation. Also versions are described for impregnation of wood or wood-based materials.

EFFECT: sufficient value of wood filling with treatment solution during shorter period of time.

29 cl, 4 dwg, 11 tbl