單板의 두께가 곧은결 및 무늬결 무늬목단판의 원적외선건조 특성에 미치는 영향

Effect of Veneer Thickness on a Far-infrared Radiation Drying Characteristics of Edge-and Flat-Sliced Veneers for Decoration

This study was carried out to investigate the effect of grain and veneer thickness on drying rate, required energy consumption, and drying defects such as checking, end waving, and burning during a far-infrared radiation drying process of decorative veneers of hard maple and beech. Most of the veneers could be dried from green to in-use moisture content within 30 to 360 seconds. The drying rates were significantly affected by veneer thickness, but there was littie difference between edge-and flat-sliced veneers. The formation of checking during drying test was none or very slight. The percentages of the veneers defected by checks were higher in the flat-sliced veneers than in the edge-sliced veneers. The maximum end wavinesses in the flat-sliced veneers were almost 1.6 to 3 times larger than that in the edge-sliced veneers. All veneers were free from burned marks during drying test.