Manchal, Kurumathur
info@heroply.com
+0460 3252546
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) 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 |
| Test Prescribed in IS:1659-1990 | Minimum Value | Observed Value |
|---|---|---|
| Dimensional 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 separation 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 made from selected higher density timbers. It is bonded with a high quality Phenol Formaledhyde (PF) resin pressed at a high temperature and pressure to ensure optimum strength and durability. It is highly rigid because of its dimensional stability.
| 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 |
| Test Prescribed in IS:1659-1990 | Minimum Value | Observed Value |
|---|---|---|
| Dimensional 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. | No-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 |