Abstract
Wood panels bow when they are exposed to different conditions on their two sides. Wood panels using plywood, particleboard and semi-hardboard, of which surfaces are untreated, and commercial wood panels for kitchen cabinet, of which surfaces are overlayed or finished for water proof or vapor barrier, are subjected to different humidity conditions on their two sides to measure the bowing.
The type of bowing depends on the coating of surface, combination of frame and cyclic humidity change when exposed, especially on thickness, difference of swelling between back and face and interval of humidity change. Wood panels should be selected to meet humidity conditions in use.
