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Specifications
Plain MDF1220x2440mm,Thickness:2-18mm,Glue:E0,E1,E2,MR,Density:630-850kg/m3
Medium Density Fibreboard - MDF
Medium Density Fibreboard (MDF) is man-made board made of wood fibers (or other plant fibres) mixed with glue (resin) under high temperature and pressure. The nominal density of MDF is 0.65~0.80g/cm3 . Actually, if the density of the fiberboard is between 0.585 (0.65X90%)g/cm3 and 0.88(0.80X110%)g/cm3 and the fiberboard can meet the technical standards of MDF, then the fiberboard can be called MDF. Generally speaking, the density of most commonly used MDF is 700~750KG/CBM.
The wood fibers for MDF can be hardwood or softwood . But other plant fibers , such as wheat straw and rice straw, can be used for producing MDF as well .
Adhesive for MDF
1. Urea formaldehyde for interior MDF
2. Melamine glue for moisture resistant MDF
3. Phenol glue for exterior MDF
Types of MDF
In European, some codes are used for classifying MDF.
CODE / Meaning
H: Humid conditions
E: Exterior conditions
L: Load bearing usage for building applications
A: Permanent loads
S: Occasional loads
Medium Density Fiberboard can be classified:
1. MDF, General MDF used in dry conditions;
2. MDF-H, General MDF used in humid Conditions;
3. MDF-E, General MDF used in exterior Conditions;
4. MDF-LA, Permanent load bearing usage in dry conditions;
5. MDF-HLS, Occasional load bearing usage in damp conditions.
Formaldehyde emission grade:
MDF Class E1 - Low formaldehyde emission (not more than 9 mg/100 g);
MDF Class E2 - Basic emission grade (not exceeding 30mg/100g) .
Advantages of MDF
1. Cheaper than solid plank , plywood - because MDF is made of recycled wood ;
2. Dense and uniform density, it's denser than most of lumber species;
3. Smooth, flat, uniform surface, suitable for the base of laminate and wood veneer;
4. Dimensional stability, won't bow, warp, twist like lumber or plywood;
5. Machinable, can be easily cut, drilled, machined and dowelled together.
6. Void free, knot free,
7. Paintable (much better than particleboard or plywood).
Disadvantages of MDF:
1. Some MDF have higher formaldehyde emission rates, which are harmful to health;
2. A large quantity of dust are released when machining MDF;
3. It swells after absorbed water or moisture;
MDF is often used for furniture, cabinetry, flooring, window, door, components, mouldings, road signs, wall panel, ceiling, crafts, decorating, packing and load-bearing component. Some of MDF have good moisture-resistant property. MDF can be used not only in dry conditions, but also in humid, high humid and even exterior conditions.
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