The plywood industry is now in a rising and improving stage. Plywood is one of the commonly used materials for furniture and a kind of man-made board. A group of veneers is usually formed by gluing the adjacent layers of wood grains perpendicular to each other. The surface board and the inner board are usually symmetrically arranged on both sides of the central layer or the core. The glued veneer is made of slabs criss-crossed according to the wood grain direction and pressed under heating or non-heating conditions. The number of layers is generally odd, and a few have even numbers. There is little difference in physical and mechanical properties in the vertical and horizontal directions. Commonly used are three-layer plywood, five-layer plywood and so on. Plywood can improve the utilization rate of wood and is a major way to save wood. It can also be used as materials for aircraft, ships, trains, automobiles, buildings and packing boxes.
Post time: Nov-05-2021