Medium Density Fibre Board is an engineered wood product formed by first breaking softwood into wood fibres, combining the same with wax and resin and then forming panels by applying high temperature and pressure. It is a building material similar in application to plywood which is made of separated fibres, but not wood veneers and is denser than particle board.
SIZE | |||||
---|---|---|---|---|---|
In Millimeter (mm) In Feet | 1220×2440 4’x8’ | 1550×2150 5’x7’ | 1550×2440 5’x8’ | 1830×2440 6’x8’ | 1830×2880 6’x9’ |
Fixing and joining techniques in MDF are similar to methods used in most other wood products. In MDF, for screwing, following methods should be adopted:
Property | Test Method as per IS : 14587 | Standard Requirement as per IS : 14587 | Typical Merino Gr – II |
---|---|---|---|
Density (kg/m3) | 600-800 | 700-800 | |
Water Absorption (% max) | A) 2hr B) 24 hr | 9 18 | 4-8 12-16 |
Thickness Selling ( % max in 2 hr) | 7 | 4.5-6.5 | |
Modulus of Rupture (N/mm2) min | A) upto 20 min B) Above 20 min | 28 25 | 30-40 30.35 |
Tensile Strength to Surface (n/mm2) min | A) upto 20 min B) Above 20 min | 0.7 0.6 | 0.8-0.85 0.7-0.75 |
Screw Withdrawl Strength (N) | A) Face B) Edge | 1500 1250 | 1800-2500 1500-1800 |
Abrasion Resistance (min) In no. of Revolutions | A) Type -1 B) Type -2 C) Type -3 D) Type – 4 | 450 250 80 75 | >500 >300 >100 >80 |
Surface Resistance to Steam | Change of Appearance | Slight colour Change | No colour change / Blister / Delamination |
Resistance to Cracking Under Heat | Change of Appearance | No Cracking / Delamination | No Cracking / Delamination |
Resistance to Cigarette Burn | Change of Appearance | No Stain / Mark | No Permanent Stain |
Resistance to Stain | Change of Appearance | No Mark / Stain | No Staining / Blistering |