Pour a Foam (DPU30)

1. Procedure for machine mixing hand pour rigid polyurethane foam . Hand pour Polyurethane foam should be mixed 1:1 by volume or 100 to 115 (B or Brown component) by weight. Use a scale to measure A and B weight before mixing. (Determine amount required) . By volume make sure heights on buckets are exactly same and use same size buckets
2. To Determine Volume: Free rise foam weighs approximately 30gms per litre or 30kg for 1000litre or 1 m3. Determine cavity volume and multiply times foam in – place density. (Example: 1mx1mx1m will need 14kg A and 16kg B . Urethane foam requires a pack factor to fill enclosed cavities. ( be careful do not exceed 10% overpack)
   
3. TO MAKE FOAM
   Prepare a small can of cleaner for rinsing mixer.
   Pour predetermined weights of A and B chemicals in separate containers.
   15 to 30 deg C is optimum. When ready to mix, pour one chemical into the other and mix with propeller type paint mixer. Clean mixer with mineral spirits or acetone
   Pour mixture into mould or cavity and let expand.
   If moulding, demould in 12 to 15 minutes.
   
   Notes: IF a moulded part is required – apply wax or apply barrier coat to mould. Allow wax or barrier coat to dry. Clamp mould before foaming. Be careful Expanding foam will develop pressure when moulding.
   
   ITEMS Required Mixing containers.
   Propeller type mixer and drill motor. (Paint mixer is ok)
   Cleaning solvent for mixer.
   Pour within 1 min to ensure maximum viscosity of mix.
   
   Maximum properties may be achieved after 7 days

• Hand Pour
  

Six months from date of manufacture if kept in closed opaque containers at 20 - 25 Deg C.