MDF Definition
Medium Density Fiberboard (MDF) is an engineered wood product made by breaking down hardwood or softwood residuals into wood fibers, often in a defibrator, combining it with wax and a resin binder, and forming panels by applying high temperature and pressure. MDF is generally denser than plywood. It is made up of separated fibers, but can be used as a building material similar in application to plywood. It is stronger and much denser than particle board. The density of 700–720 kg/m3 is common. MDF is typically made up of 77% wood fiber, 8% urea-formaldehyde resin, 12% water and 3% paraffin wax.The first MDF factory was built in 1965 in Norbord Industries, in the city of Deposit, New York. The first MDF factory in Iran was launched in spring 2004 under the name "Caspian wood industry". The production and use of MDF has grown rapidly throughout the world, because of its various uses and some characteristics such as suitable physical and mechanical properties, wide range of density, various thickness and dimensions producible, tooling ability, suitable machining and sanding, smooth and dense surfaces, flattening ability and smooth edges, elimination of natural wood defects, uniform and homogeneous density profiles, the ability to carry different coating methods, such as wooden and non-wood coatings, natural and synthetic veneers, painting and so on, dimensional stability and resistance to compression, good appearance, states like wood and reasonable price can be considered.
