Plywood is a material made of thin layers or "plies" of wood veneers, which are glued to adjacent layers so that the wood grains are rotated 90 degrees to each other. It is a kind of engineered wood from the wood-based panel family, including medium-density fiberboard (MDF) and particle board (chipboard).
All plywood combines resin and wood fiberboard (cellulosic cells are long, strong, and thin) to form a composite material. This alternation of textures is called cross texture, and it has several important benefits: it reduces the tendency of wood to crack when nailed to the edge; it reduces expansion and contraction and improves dimensional stability, and it makes the strength of the panel consistent across all directions. Usually, the number of layers is odd, so that the thin plate is balanced, which reduces the warpage. Since the plywood is made of particles colliding with each other and bonding an odd number of composite parts, it has high rigidity perpendicular to the texture direction of the surface layer.
Hardwood plywood is a kind of plywood whose front and back are hardwood, which is different from softwood such as pine, cedar, and spruce. Hardwood plywood consists of a core material made of softwood or hardwood, then veneered and backed with veneer or dyed hardwood, so it can be used to make furniture, cabinets, wood products, and other decorative applications.
No wonder hardwood plywood replaced solid wood a long time ago as the material of choice for interiors, cabinets, and various furniture. Plywood is more stable than solid wood, has many grades and types, and is relatively economical.
Alder, ash, beech, birch, bamboo, cherry, hickory, mahogany, maple, poplar, oak, teak, walnut, wenge, zebrawood, etc.
Hardwood plywood is used in wood products to make furniture, cabinets, boxes, built-in closets, kitchens, construction applications, doors, paneling, toys, musical instruments, sports equipment, skateboards, etc.
Most hardwood plywood is made with formaldehyde-free glue that is not moisture-proof, so it is an indoor-grade panel. Some special applications, such as the marine industry, use outdoor-grade hardwood plywood, which can be provided upon special order. Various thicknesses, sizes, and grades are available.
The information is provided by the plywood factory.
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