A Study on the Stresses causing the Bowing of Wooden Flush Doors for Furnitures and Buildings

가구(家具) 및 건축용(建築用) 목제(木製) 플러시도어의 길이 굽음 변형발생(變形發生) 원인응력(原因應力)에 관(關)한 연구(硏究)

Hollow core wood flush doors for wardrobes, and other general openings and bathroom were designed and fabricated to investigate the factors causing the bowing of them and to find out the countermeasure for the phenomena. Balance in grain orientation, thickness, specific gravity and M.C.(%) of face panel and symmetrical construction were the essential factors to prevent the deflection of flush doors just after manufacturing. Under one-sided severe service condition, the unbalance of M.C. between opposite face panels is inevitable. So the material as thick plywood with high stiffness is considered as an alternative for the stile. UF resin mixing into PVAc emulsion is preferred for bathroom.