plywood

     

Description: Plywood is a type of manufactured wood made from thin sheets of wood. The layers are glued together so that adjacent plies have their wood grain at right angles to each other for greater strength. There are usually an odd number of plies, as symmetry makes the board less prone to warping.

Plywood is one of the most widely used wood products. It is flammable, flexible, cheap, workable, recyclable, and can usually be locally manufactured. Plywood is made from thin layers of wood that are peeled from trees. These layers (or the veneer) are then glued together to make plywood. The grain direction in each layer of veneer is perpendicular to the next layer. There are always odd numbers of layers so that the sheet is balanced - this prevents warping. Because of the way plywood is bonded (with grains running against one another and with an odd number of composite parts) it is very hard to bend it perpendicular to the grain direction. A common reason for using plywood instead of plain wood is its resistance to cracking, shrinkage, twisting/warping, and its general high degree of strength.

Block board is a kind of plywood , core of which is made of solid wood strips 7-30 millimeters wide. The core is covered with veneers on each side and then to be hot-pressed. The wood strips in the core can be glued together or can be not glued.

Uses: It may be used for Wall Panelling, Flooring and Furniture, Wardrobes, Shop fitments, Bank counters, Door shutters, Pelmets, Table tops, Stalls and booths, Bus and Truck bodies.