How to choose high quality plywood?
The plywood has front and back sides. When selecting, pay attention to the smooth, non-brown front, smooth, uniform texture and uniform color. Gluing quality is good, no degumming, no internal space
The plywood sheet has front and back sides. When selecting, pay attention to the smooth, non-brown front, smooth, uniform texture and uniform color. Gluing quality is good, no degumming, no internal air
phenomenon, you can use a wooden stick of about 50 cm, pry the
plywood to the various parts, the sound is even, crisp and the upper
ply board, such as the dull shell The sound is very likely due to the inherent quality problems caused by degumming and emptying. The thickness of each core layer of the plywood is uniform and the thickness is up to standard. The plywood should not have any defects such as damage, insect trough, nail hole, dead knot, burr groove.
Besides to the appearance of some materials, you can also lick its weight, the weight is heavy, indicating that the material is tight, and most of the internal quality can only be sawed after it can be seen at a glance.
You can also check the quality of the plywood by smelling the smell, don't smell the surface, and smell the side of the plywood. If there is strong irritating odor, pungent and pungent, it means that the formaldehyde content of the plate is too high. If you are environmentally friendly, don't buy it back and build a "gas chamber."
Plywood should be certified by the manufacturer's quality inspection department when leaving the factory. Pay attention to the type, specification, grade, bonding strength and moisture content of the plywood.
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