METHOD OF DRYING OF HARD-DRIED WOOD SPECIES Russian patent published in 2005 - IPC

FIELD: methods of drying woods.

SUBSTANCE: method can be used at woodworking factories, for example for making furniture. Method of drying is based upon step-by-step change in parameters of drying agent depending on humidity of woods. Timber is preliminary subject to boiling at atmospheric pressure in 15-17% solution of sodium chloride during 2,5-3,0 hours. Then timber is subject to convective drying at four-step increase of temperature from 40° to 60°C and simultaneous four-step reduction of relative humidity of drying agent till achieving value which provides preset final humidity of wood species. Drying agent can have temperature of 40° and relative humidity of 90% at first step, temperature of 50° and relative humidity of 85% at the second step, temperature of 60° and relative humidity of 80% at the third step and temperature of 66° and relative humidity of 50% at the fourth step.

EFFECT: improved quality of drying; reduced time of procedure.

2 cl, 1 tbl