apparatus for applying impregnating liquid by spraying between the first and second and between the second and third drying oven sections respectively as illustrated in fig1 by means of this invention an expedient continuous performance in practice of the method dealt with is obtained as shown in fig1 a veneer strip 1 is passed from a peeler 2 onto a roll 3 the roll 3 is repositioned onto a rack 4 fig2 and the veneer strip 1 is passed into a first section 5 of a drying oven divided into three sections in section 5 the veneer strip is dried at about 160 u00b0 c to a moisture content of 4 at the most after having passed out of the first drying oven section the strip of veneer is passed into a spraying apparatus 6 and through two curtains of liquid produced by conventional spraying heads 7 and 7 the curtains of liquid consist of a solution which can have the following composition resorcinol 10 parts by weightborax 4 parts by weightboric acid 4 parts by weightwater 82 parts by weight as shown in the drawing the veneer 1 is passed through the curtains of liquid in such a way that it is.