If you buy blockboard, you should not be confused by the neat trimming around the smooth and smooth surface. Be sure to pay attention to the inner core. The quality of the core strip and the tightness of the stitching directly affect the strength of the blockboard. If there are conditions, it is best to randomly take a saw from a large stack of sheets to see if the width of the core strip is greater than 2.5 times its thickness , and whether the distance between the two end seams of two adjacent rows of core strips is greater than 50 mm. Whether the length of the core strip is greater than 100mm , whether the gap on the side of the core strip is less than 2mm , whether the gap of the end face is less than 4mm , and whether the core of the core is rotten, wet wood strips and large hollow holes, which directly affect the transverse static bending strength of the blockboard. The problem is difficult to identify from the outside.
Since the blockboard is made of wood and urea-formaldehyde resin as the main raw material, the product must have a certain formaldehyde release. If the index exceeds a certain limit, it will have a certain impact on personal health. A plate with a serious taste. Formaldehyde emission is not greater than 1.5mg / L level of the E1 board can be directly used indoors, not more than 5.0mg / L level E2 of the plate after finishing treatment is necessary only for the chamber.
Tags: blockboard, top ten brands of Chinese plates , wood-based panels, plates
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