Plywood (commonly known as plywood) is made of three or more layers of solid wood veneer or thin plate adhesive. Commonly there are three plywood, five plywood, nine plywood and twelve plywood. The material has the characteristics of good structural strength and good stability, and is mainly used for the floor of decorative panels, the backboard of panel furniture and the like.
Classification of plywood
One type of plywood is weather-resistant and boiling-resistant plywood, which has the advantages of high temperature resistance and steam treatment;
The second type of plywood is water resistant plywood, which can be immersed in cold water and impregnated with hot water for a short time;
The three types of plywood are moisture-resistant plywood, which can be dipped in cold water for a short time and is suitable for indoor use at room temperature. For furniture and general construction purposes;
The four types of plywood are non-durable plywood, which can be used under normal conditions in the room. The general purpose plywood is made of beech, eucalyptus, ash, birch, elm, and poplar.
The following aspects should be noted when selecting plywood:
1) The splint has the difference between the front and the back. When selecting, the plywood should have clear wood grain, smooth and smooth front, not rough, and should be smooth without any feeling of hand; when purchasing multiple plywood, you should choose wood grain and plywood with similar color.
2) There should be no defects such as breakage, bumps, hard injuries, shackles, etc., and there should be no deterioration of the plywood;
3) There is no degumming of the plywood;
4) Some plywood is made by sticking two veneers of different textures together, so it is necessary to pay attention to the splint joints in the selection, there should be no unevenness;
5) When selecting the splint, care should be taken to select the splint that does not disperse. If the sound is brittle when the hands are knocked on all parts of the plywood, the quality is proved to be good. If the sound is boring, it means that the splint has been scattered.
6) Choose environmentally friendly plywood, pay attention to its formaldehyde emission. Consumers should purchase quality and environmentally friendly branded panels.
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