The plywood is a plate which is formed by rolling and cutting the logs in the direction of the annual ring into a large veneer, which is dried and glued, and then laminated according to the principle that the wood grain of the adjacent veneers is perpendicular to each other. The number of veneers is odd, usually three to thirteen. Commonly there are plywood, plywood, nine plywood, and thirteen plywood (commonly known as three PCT, five PCT, nine PCT, and thirteen PCT). board). The outermost front panel is called a panel, the reverse side is called a back panel, and the inner layer is called a core panel.
One type of plywood is weather-resistant and boiling-resistant plywood, and thus has the advantages of durability, high temperature resistance and steam treatment; the second type 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. Used for furniture and general construction purposes; four types of plywood are non-durable plywood, used in indoor normal state, general purpose plywood materials are beech, eucalyptus, ash, birch, eucalyptus, poplar and so on.
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