drying processing notes - nebula.wsimg.com
TRANSCRIPT
DRYING
Tim Bearnes, CEO504 West Industrial Road
Laurel, NE 68745(402) 256-9053
PROCESSING NOTES Material should be dried
Extruder should be purged with general purpose polypropylene if not in operation for more than 15 minutes
Avoid over packing material in extruder
Do not exceed an operating melt temperature of 390 °F
Mechanical Property
Specific Gravity (g/cc) 1.01
Clarity Opaque
Melt Temperature 360 - 380 °F
Feed Throat 70 °F
Feed Temperature 300 °F
Compression Section 320 - 340 °F
Metering Section 360 - 380 °F
Nozzle 360 - 380 °F
Mold 150 °F
Screw Speed 60 - 80 RPM
Back Pressure 10 - 40 psi
Molding Parameters
Processing Temperature Profile
Laurel BioComposite, LLC.Bio-Res™ PP Technical Data Sheet
MFR (g/10min 190 °C, 2.16 kg) 8 D1238
Flexural Strength (MPa) 35 D790
Material should be dried according to standard PP drying
procedures. In line drying is recommended to maintain
moisture under 1%. Drying can be complete in 2 hours at
175 °F.
Material and Application Properties
Physical Property1 Bio-Res PP (33%) ASTM Method
Tensile Yield Strength, psi (MPa) 2740 (18) D638
Tensile Elongation % 21 D638
Flexural Modulus (PSI) 1400 D790
1 - composed of 20% Bio-Res powder
Notched Izod Impact, ft-lb/in (J/m) 6.6 (352) D256