Thermoplastic Polyolefin, High Stiffness, Talc-Filled Applications: Automotive Interiors Conditioning after Molding: 48 hr at 23°C Nominal Shrinkage: 0.9-1.1% Drying conditions- Temperature: 80-100°C
- Time: 2 hours minimum, 4 hours maximum
- Device: Desiccant Dryer
- Moisture content: 0.1 wt% max.
Molding Temperatures- Rear Temperature: 145-200°C
- Middle Temperature: 210-235°C
- Front and Nozzle Temps: 210-235°C
- Stock Temperature: 191-246°C
- Mold Temperature: 23-50°C
Processing conditions- Suggested shot size: 50-70%
- First stage injection pressure: Maximize
- Screw Speed: 30-60%
- Packing pressure: Minimize
- Back Pressure: 50-150 psi
Other molding considerations: Melt temperature above 260°C may cause resin degradation and changes to resin properties. To improve dispersion of color concentrates use a screw with a mixing zone or mixing nozzle. Phillips Sumika Polypropylene Company has been shut down, as announced in 2011. |
Information Provided by Chevron Phillips Chemical |