A brief introduction to plywood
Plywood is cut from the wood section into a veneer or cut from the wooden square cut into thin wood, and then made of adhesive glue from the three or more layers of plate-like material, usually with odd-level veneer, and the adjacent layer of veneer Of the fibers are perpendicular to each other.
Plywood is one of the common materials for furniture, one of the three panels of man-made board, but also for aircraft, ships, trains, cars, construction and packaging materials. A group of veneers are usually made in the direction of the adjacent layers in the direction of the adjacent layers. Generally, the panels and the inner panels are arranged symmetrically on either side of the center layer or the core. With the veneer after the wood by the direction of the criss-cross the composition of the slab, heated or not heated under the conditions of suppression. The number of layers is generally odd, and few are even. Vertical and horizontal direction of the physical and mechanical properties of small differences. Commonly used plywood type plywood, penta and so on. Plywood can improve timber utilization and is a major way to save wood.
The usual length and width specifications are: 1220 × 2440mm, while the thickness specifications are generally: 3,5,9,12,15,18 mm and so on. The main tree species are: camphor, willow, poplar, eucalyptus and so on.