Fire Retardant Plywood meets IS 5509-2000 standards offering resistance to ignition, surface spread of flames and flames penetration by suitable chemical treatment. Fire retardant characteristics are a very important property to prevent propagation of fire at the initial stages. Flame penetration: The time taken for flame penetration shall not be less then 15 minutes for every 6mm thickness. Rate of burning: The time taken to lose weight from 30 percent shall not be less then 20 minutes. Flammability: The time taken for second ignition shall not be less then 30 minutes.
- The protective char is non-hygroscopic in nature. It will not affect the hardware elements that may corrode due to moisture affinity of common chemicals.
- The chemical is non-leachable hence there is no loss of the retardant chemicals in very adverse conditions. Does not affect painting or overlaying.
- No significant effect on the strength properties (adhesive bonding) compared to norml grade (BWR, BWP) plywood
- Its slow rate of burning provides sufficient time for the fire to be extinguished.
- Unlike common ply, Archidply Firesafe ply creates a barrier against fire, due to its slower fire penetrating rate.
- Nail and srew holding property is not affected.
- Tensile and bending strength remain unaffected, as the chemical does not react with wood.