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The comprehensive utilization of wood

In the process of processing wood into profiles and making components, there will be a large number of fragments, waste chips, etc., and these waste materials can be processed to make a variety of artificial plates (except plywood raw materials). Commonly used artificial plates have the following types:
Plywood is the original wood cut into thin sheets, with adhesive hot pressing of artificial sheet, which the laminated sheet must be in accordance with the odd number of layers, and keep the layers of fibers perpendicular to each other, the top number of plywood up to 15 layers.
Plywood greatly improves the utilization rate of wood, its main characteristics are: uniform material, high strength, no defects, large format, easy to use, the board has a real, three-dimensional and natural beauty, widely used in buildings indoor partition board, wadding board, ceiling board, facade board and a variety of furniture and decoration. In construction projects, plywood and plywood are commonly used. China's plywood is mainly made of ash, basswood, birch, masson pine and some imported raw materials.
Fiberboard is the wood processing down the board, shavings, branches and other corner waste, broken, soaked, ground into wood pulp, and then add a certain rubber material, hot pressing, dry processing of artificial board, divided into hard fiberboard, semi-hard fiberboard and soft fiberboard three kinds. The apparent density of fiberboard is generally greater than 800kg/m3, suitable for thermal insulation materials.
Fiberboard is characterized by uniform material structure, isotropy, consistent strength, high bending strength (up to 55MPa),
Wear-resistant, good heat insulation, not easy to expand and shrink and warp deformation, no decay, no knot, worm eye and other defects. The production of fiberboard can make the utilization rate of wood more than 90%.
Particleboard, wood wire board and wood chip board are respectively made of wood wire and wood chips from planing wood residue and scraps, which are mixed with adhesive after drying and then made by hot pressing. The binder used is synthetic resin, and inorganic cementing materials such as cement and magnesite can also be used. This kind of board is generally relatively small apparent density, low strength, mainly used as insulation and sound absorption materials, but the surface of the hot-pressed resin particleboard and wood chip board can be glued to plastic veneer or plywood as a finishing layer, which both increases the strength of the board, but also makes the board decorative, can be used as a ceiling, partition wall, furniture and other materials.
Composite board mainly has two kinds of composite floor and composite board.
Composite floor is a multi-layer laminated wood floor, 80% of the board is wood. This kind of floor is usually composed of surface layer, core board and bottom three parts, of which the surface layer is made of specially processed wood grain paper and transparent melamine resin under high temperature and high pressure. The core board is a high-density board made of wood fiber, wood chips or other wood granular materials, etc., mixed with organic matter and pressurized; The bottom layer is a paper layer laminated with polymer.
Composite floor specifications are generally 1200mm×200mm strip, plate thickness of about 8mm, its surface is smooth and beautiful,
Solid wear-resistant, no deformation, no dry crack, no stain and fade, no need to wax, durability is better, and easy to clean, easy to lay. Composite floor is suitable for living room, living room, bedroom and other ground paving.
Composite wood board is also called woodworking board, it is made of three layers of adhesive compression, the upper and lower layers of plywood, the core board is made of wood processing after the remaining short wood by processing wood strips, and then the board is made of glue.
Composite wood is generally 20mm thick, 2000mm long, 1000mm wide, large format, flat surface, easy to use. Composite wood can be used instead of solid wood, and is now widely used as the decoration of indoor partition walls, partitions, cabinets, etc.

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