quality large core board

purchase, in addition to checking the width of the core board of wood, but also check whether the two core board stitching closely, there is no obvious gap. Poor quality of the big core board splicing is not close, the gap is obvious. Some manufacturers in order to cover this flaw, with putty, gypsum powder and other materials filled in the crevices of the wood. Consumers can check Daxin Ban side, if you see glue, make-up phenomenon, indicating that there may be gaps or holes inside. Xiao Bian remind: If the business allows, consumers can saw a corner of the core plate, observe the structure of its internal wood core. In the middle of the spliced ??wooden bar can not use the bark, wormhole and dead knot wood. Better quality core board, the connection between the wood is very dense. Third, the stability: the more thick plate in the more stable plate from the inside to the outside can be divided into core plate, plate and panel three. The second layer of the panel is usually called the middle board, which mainly plays the role of stabilizing the core board, so the thicker the board, the better the stability of the big core board. The upper plate of the thinner plate, easily lead to large core bending less than the thickness of the lightweight rigid board win a chip technology
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