A CONTROL METHOD FOR QUALITY FACTORS OF THE SURFACE OF WHOLE WOOD

摘要

The invention relates to a method for adjusting the quality factors of thesurface of a piece of wood, so that the effective period of hydrogen peroxide,from its application onto the wood surface to its evaporation therefrom isless than 5 minutes, advantageously less than 1 minute. In the method onto thesurface of the piece of wood, with a temperature near room temperature orlower, there is fed hydrogen peroxide as spray, the pH of the initial solutionof said spray being neutral or acidic. The hydrogen peroxide is allowed toaffect the wood surface about 1-60 seconds, advantageously about 1-30 seconds.Thereafter the hydrogen peroxide is activated by irradiating the surface ofthe piece of wood by a radiation source, so that at the end of the irradiationperiod, the wood surface temperature is 40-80 ~C. The power of the radiationsource is 20-500 kW, advantageously 50-200 kW per surface m2 of the piece ofwood.