Table 1.
Injection molding machine parameters.
| Parameters | HDPE | PP |
|---|---|---|
| Mold temperature (°C) | 20 | 20 |
| Injection pressure (bar) | 900−1325 | 1300−1400 |
| Hold pressure: (bar) | 450−600 | 600−925 |
| Injection pressure time (s) | 0.8−1.9 | 0.8−1.9 |
| Hold pressure time (s) | 11 | 11 |
| Cooling time (s) | 17 | 17 |
| Total cycle time (s) | 33.2−33.6 | 33.3−34.4 |
| Dosing volume (cm3) | 18/26/34/41 | 18.5/26/34/41 |
| Decompression volume (cm3) | 5 | 5 |
| Screw speed (RPM) | 215 | 215 |
| Barrel temperature profile–feed, zone1, zone2, nozzle (°C) | 170/190/190/190 | 185/205/205/205 |