PURPOSE: To systematically, efficiently and economically perform the predrying of veneer peeled off by a rotary race by the sun's rays and the waste heat from a facility heat source.

CONSTITUTION: The roof of a factory is made of glass or plastic pervious to the sun's rays, and a guide rail for drying and transporting veneer is arranged under the roof over a wide range and veneer peeled off by a rotary race is successively guided to the area under the roof by the guide rail and circulated under the roof to be subjected to predrying by the sun's rays and the waste heat from the facility heat source in the factory.