Plywood is one of the most common furniture materials in our daily life and is also one of the three artificial plates. Plywood is a three-layer or multi-layered sheet ingenuity made of a piece of wood, or a three-layer edgy sheet that is cut into thin wood by a wooden piece and then made with adhesive glue.
Here's how to select plywood:
1, glue strength. You can use a knife to pry open the bonding plate along the adhesive layer to observe the remaining traces of wood wire on the adhesive layer.
If there is more wood left on the peeling surface, indicating that the quality of plywood is better, if the plywood sheet along the plywood peeling, the adhesive surface can not see the residual wood, proving that the strength of the wood has not been fully developed, but the adhesive layer has been destroyed, which indicates that the plywood strength is poor.
2, size.
Cannot buy thickness size missing catties short two serious plywood.
3, formaldehyde release amount.
The state has banned the sale of plates with a release of formaldehyde of more than 5.0mg/L for interior decoration.
4, appearance. To choose the surface smooth wood pattern clear, the glue layer can not have bubbles, layering and other phenomena. Avoid selecting table plate stacking, stacking, and core plate stitching off seams. If it is greater than 6 mm plywood, but also to determine whether the warp degree is exceeded, the superboard warping degree can not exceed 0.5%, the first and second-class board can not exceed 1%, the third-class board can not exceed 2%.
