Overview of laser cutting plywood machine
In order to improve the anisotropic properties of natural wood as much as possible, the properties of plywood are uniform and the shape is stable. In general, plywood should follow two basic principles in structure: one is symmetry; the other is that the fibers of adjacent veneers are perpendicular to each other. The principle of symmetry is to require veneers on both sides of the plane of symmetry of the plywood, regardless of the nature of the wood, the thickness of the veneer, the number of layers, the direction of the fibers, the moisture content, etc., which should be symmetrical to each other. In the same plywood, a single species and thickness of veneer may be used, or veneers of different species and thickness may be used; but any two symmetrical veneer species and thicknesses on both sides of the symmetrical center plane should be the same. The back panel does not allow the same species.
To make the structure of plywood comply with the above two basic principles at the same time, its number of layers should be odd. Therefore, plywood is usually made of three layers, five layers, seven layers and other odd number of layers. The names of the plywood layers are: the surface veneer is called the surface plate, the internal veneer is called the core plate; the front surface plate is called the panel, the back surface plate is called the back plate; the core plate, the fiber direction is parallel to the surface plate It is called long or medium board. When forming the platen slab, the face plate and the back plate must face outwards.
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