MR GRADE BLOCK BOARD

IS:1659-2004

MR Grade Block Board is manufactured from the combination of select seasoned, durable hard wood, timber pattens and veneers. The resin gives our board strong enough to resist warm water upto 8hrs. This are bonded with Urea Melamine Formaldehyde Resin under high pressure and temperature.

Thickness(MM)
19 mm
8x4
8x3
7x4
7x3
6x4
6x3
5x4
5x3
Thickness(MM)
25 to 35
Length
Width
6
2.25
6.25
2.5
6.5
2.75
6.75
3
7
3.5
8
4
Technical Specification
Test Prescribed in IS:1659-1990 Minimum Value Observed Value
Dimentional Changes Caused by Humidity No-delamination in the extreme range of humidity. Dimensional change not more than ±1mm in local planeness. No-delamination observed. Dimensional change within the specifies limit.
Mycological Test No appreciable sign of seperation edges. Satisfactory
Adhesive of Plies Minimum Pass Standard Excellent
Water Resistance (Soaking of test pieces for 3hrs in water at 60±2°C Minimum Pass Standard Excellent
Modulus of Elasticity 4000 N/sq.mm 5015 N/sq.mm
Modulus of Rupture 40 N/sq.mm 53 N/sq.mm

BWP GRADE BLOCK BOARD

IS:1659-2004

BWP grade Block Board is made from selected hIgher density timbers. It is highly rigid because of its dimensional stability. It is bonded with a high quality phenol formaledhyde (PF) resin pressed at a high temperature and pressure to ensure optimum strength and durability .

Thickness(MM)
19mm
8x4
8x3
7x4
7x3
6x4
6x3
5x4
5x3
Thickness(MM)
25 to 35
Length
Width
6
2.25
6.25
2.5
6.5
2.75
6.75
3
7
3.5
8
4
Technical Specification
Test Prescribed in IS:1659-1990 Minimum Value Observed Value
Dimentional Changes Caused by Humidity No-delamination in the extreme range of humidity. Dimensional change not more than ±1mm in local planeness. No-delamination observed. Dimensional change within the specifies limit.
Mycological Test No appreciable sign of seperation edges. Satisfactory
Adhesive of Plies Minimum Pass Standard Excellent
Hot Water Resistance There shall not be any Delamination after 72 hours of boiling. N0-delamination observed.
Preservation Treatment Through and through penetration of preservative chemicals should be observed. Confirmed
Modulus of Elasticity 5000 N/sq.mm 6050 N/sq.mm
Modulus of Rupture 50 N/sq.mm 64 N/sq.mm