The wood board (commonly known as the large core board) is a plywood with a solid wood core, and its vertical direction (different from the core sheet) is inferior in bending strength, but the transverse bending strength is high. Most of the market is now solid, glued, double-sided sanding, five-layer blockboard , which is one of the most commonly used plates in decoration.
advantage:
A. The blockboard has good screw strength, high strength, and has the characteristics of firmness, sound absorption and heat insulation. The moisture content of the blockboard is not high, between 10% and 13% , it is easy to process and is used for furniture, doors and windows. Sets, partitions, false walls, heating covers, curtain boxes, etc., are the most widely used.
B. Because the interior is solid wood strip, the requirements for processing equipment are not high, which is convenient for on-site construction.
Disadvantages:
A. Because of the large amount of urethane glue used in the production process of wood board, the formaldehyde emission is generally high , and the environmental protection standards are generally low, which is why most wood boards are pungent.
B. At present, most of the woodboards on the market are cut corners during production. When the solid wood strips are spliced, the gap is large, and there are holes in the interior of the board. If the nails are nailed in the gap, there is basically no nail holding force.
C. The solid wood strip inside the wood board is longitudinally spliced, so the vertical bending resistance is poor, and the long-term stress will cause obvious lateral deformation of the board.
D , the solid wood strip inside the wood board is different in material, the density is different, only after simple drying treatment, it is easy to warp and deform; the structure is distorted and deformed, which affects the appearance and use effect.
E. Because the surface of the wood board is rough, when the woodworking site is processed, a lot of glue or paint is usually used in the surface treatment. Therefore, the furniture made from the board is not environmentally friendly, which is why the taste is very exciting during the decoration. The reason is that such on-site furniture is the culprit of carcinogenicity and genetic mutations, and it is very harmful to the human body.
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