Veneers from high-quality logs are mechanically dried and they undergo a stress-relieving process, which is assembled in such a way, to form a balanced construction. High quality fortified synthetic resins are used for gluing the veneers. Glue line is poisoned by special formulations of chemicals to make Ogaan plywood safe against borers. It is hot pressed under proper temperature and more than then 16Kg/cm2 specific pressure. Conditioning is done after pressing, followed by preservative treatment.
MR grade is basically used for interior applications. BWR the grade is used in woodworking like ship cabins, Railway Coaches, Bus and Truck Bodies, Kitchen Cabinets, Exhaust pipes, False Ceilings, Speaker Cabinets, Bathroom Paneling etc.
Test | Requirement of IS:303(BWR/MR) | Test Result |
Moisture Content Glue Adhesion | 5-15% | 6-10% |
a) Water Resistance Test | Three cycles of 8 hours boiling in water and drying at 65±2°c For 16 hours, 3 hours at 60±2°c in water & drying 65±2°c for 8 hour | Pass Standard |
(b) Mycological test Static Bending Strength MOE (Modular of Elasticity) | One cycle of 21 days | Pass Standard |
Along Avg. N/mm2 Min. Ind. N/mm2 |
5000/4000 4500/3600 |
5500/4500 5000/4000 |
Across Avg. N/mm2 Min. Ind. N/mm2 |
2500/2000 2200/1800 |
3000/2500 2500/2400 |
MOR (Modular of Rupture)
Along Avg. N/mm2 Min. Ind. N/mm2 |
40/30 36/27 |
45/40 40/35 |
MOR (Modular of Rupture)
Along Avg. N/mm2 Min. Ind. N/mm2 |
20/15 18/13 |
30/25 25/20 |