Plywood is from the wood section to cut veneer or cut from wood to thin wood, and then glued with adhesives from the three-storey or multilayer plate-like materials, usually with odd-layer veneer, and the adjacent layer of the veneer of fiber direction perpendicular to each other.
Plywood is one of the common furniture materials, one of the three boards for wood-based panels, but also for aircraft, ships, trains, automobiles, buildings and boxes and other functions. A group of veneer is usually glued to each other vertically by adjacent layers of wood grain direction, and usually its table plate and inner plate are symmetrically arranged on both sides of the center layer or the plate core. The veneer is separated by the veneer according to the wood grain direction, and is suppressed under the condition of heating or not heating. The number of layers is usually odd and few have even. The physical and mechanical properties of the vertical and horizontal directions are small. Commonly used plywood types are plywood, Guean and so on. Plywood can improve wood utilization and is a main way to save wood.
The usual length and width specifications are: 1220x2440mm, while the thickness specifications are generally: 3, 5, 9, 12, 15, 18mm and so on. The main tree species are: Beech wood, camphor, willow, poplar, eucalyptus and so on.