In the production of plywood cable wooden tray, in order to try to improve the anisotropic characteristics of natural wood, plywood characteristics make uniform shape and stability, general plywood in the structure must comply with two basic principles: First, symmetry; two adjacent layers of a single Board fibers perpendicular to each other. Symmetry principle is to ask veneer plywood on both sides of the central plane of symmetry, both wood properties, the board thickness, number of layers, fiber orientation, moisture, etc., should be symmetrical to each other. With a piece of plywood, you can use a single species and thickness of the veneer, you can also use veneer different species and thicknesses; but any two sides of the central plane of symmetry symmetrical to each other and the thickness of the veneer to the same species. Allow not the same species face back. For plywood structure while meeting the above two basic principles, it should be an odd number of layers. So usually made of plywood three, five, seven and so on odd floors. Plywood veneer surface layers name is called table board, veneer inner layer called core board; front dashboard called panels, dashboard called back negative; core metal, fiber direction parallel with the table plate Long known as the core plate or plate. When the cavity platen slab composition, face and back facing out the necessary tight. The above content is shared by Hiroaki wood products (http://www.hmmzp.com) with you, if error, please correct me. 

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