One, what is a large core board?
Plywood, also commonly known as CD board, is made by bonding two sheets of single-ply wood together with a core of natural wood strips. The core is formed by gluing together natural wood strips, and thin wood veneers are applied to both sides. Plywood is an essential wood product for wall, ceiling, and fine woodworking applications in home renovation.
This board is cheaper than plywood, but it has a lower bending strength in the vertical direction (when distinguished by the grain direction), but a higher bending strength in the horizontal direction.
Two. Advantages of Plywood
Plywood offers excellent screw-holding power, high strength, and features such as stiffness, sound absorption, and thermal insulation. It has a low moisture content, is easy to work with, and is used in furniture, doors, windows, partitions, false walls, radiators, and curtain boxes.
Due to the internal construction of plywood with solid wood strips, it requires minimal processing equipment, making it convenient for on-site construction.
Three. Disadvantages of plywood
Particleboard extensively uses urea-formaldehyde resins during production, resulting in relatively high formaldehyde emissions and lower-than-required environmental standards. This is a common cause of the unpleasant odor associated with particleboard.
市面上大部分细木工板生产时偷工减料，在拼接实木条时缝隙较大，板材内部普遍存在空洞，如果在缝隙处打钉，则基本没有握钉力。
The solid wood strips inside the plywood are arranged in a longitudinal direction, which results in a significant difference in bending strength in the vertical direction. Long-term exposure to loads can cause noticeable lateral deformation of the board.
The different wood species and varying densities within the plywood cause it to warp and deform easily, even after simple drying, affecting its appearance and usability.
Due to the rough surface of the particleboard, woodworkers typically use large amounts of glue or paint when processing it on-site. This results in furniture made from this material being highly unsustainable, and also explains why the air quality is so poor during renovation. Furniture made in this way is a potential carcinogen and can cause genetic mutations, posing a significant threat to human health.