How To Choose Plywood?

   Plywood is a three-layer or multi-layer man-made board made by peeling wood segments into veneers or planing wood blocks into thin wood, and then gluing them with adhesives. It usually uses an odd number of veneers, and the fiber directions of adjacent veneers are glued perpendicular to each other.

   As one of the three major man-made boards, even if we often cannot see or recognize it directly, it does not affect its repeated presence in our daily lives. From various furniture, buildings and packaging boxes to airplanes, ships, trains, and cars, it can be seen. It can be said that it can be used in the hall and the kitchen.
   When choosing plywood, be sure to pay attention to carefully observe whether the wood grain on both sides of the plywood is clear, whether there are scars or damage. Smooth and smooth without roughness, flatness and no stagnation is a high-quality plywood.
   Many plywoods are made of two different veneers glued together, and the plywood of good quality is tightly spliced ​​and flat without degumming. When purchasing, carefully observe the side and pay attention to whether the joints are tight and whether there are unevenness.
   Although the core of the board is in the middle of the board and we cannot directly identify it with the naked eye, we can "identify the quality by listening to the sound". When you knock on the surface of the plywood with your fingers, the crisp sound indicates that the strength is good to a certain extent. If the sound varies greatly from place to place and appears low and dull, it means that there may be a cavity in the core of the board.
   Plywood is a practical board made of thin slices cut from layers of wood and glued together with adhesives. Adhesives are the main source of formaldehyde in boards. The quality of glue directly affects the environmental protection of plywood.
   Therefore, please be sure to carefully check the environmental protection level on the label and choose environmentally friendly glue with low formaldehyde emission. Qualified plywood produced by regular manufacturers must reach E1 level, and some even reach higher E0 and Enf levels.