Plywood is cut from the wood section into a veneer or cut from the wooden side chopped 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 veneer Of the fiber direction perpendicular to each other.
Plywood is one of the commonly used 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 plates are arranged symmetrically on either side of the center or the core. With the veneer after the wood by the direction of criss-cross the composition of the slab, in the heating or no heating 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 types are plywood, penta and so on. Plywood can increase wood 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 species are: eucalyptus, birch, beech and so on.
In the choice of plywood, how to choose a good plywood?
Plywood has positive and negative differences between the two sides, in the selection, the plywood to clear grain, smooth and smooth, not rough, to be flat without stagnation.
Plywood should not be damaged, bumps, flaws, knots and other defects.
Plywood without degumming phenomenon.
Some plywood is made of two different lines of veneer together, so the choice should pay attention to the splint of the plywood should be tight, there is no rugged phenomenon.
When picking plywood, care should be taken to pick the splint without glue. If the hand pacified the various parts of the plywood, the sound crisp, to prove good quality, if the sound boring, said the plywood has been open plastic phenomenon.
In the selection of garnish decorative panels, but also pay attention to color uniform, consistent texture, and wood color and paint color coordination.