Distinguish between multilayer boards and plywood
A group of veneers are usually in the direction of adjacent layers of wood grain perpendicular to the formation of each other, usually its table and the inner plate symmetrically arranged in the center layer or plate on both sides
Commonly used plywood type plywood, penta and so on. Plywood can improve timber utilization and is a major way to save wood
The number of layers is generally odd, and few are even. Vertical and horizontal direction of the physical and mechanical properties of small differences.
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.
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.
