The Production Technology of PET Preforms.
No. |
Process |
Key Production Technology |
1 |
PET Resin Dry |
(1) Temperature: 125-175℃ (2) Dried Air Flow: 3.7 m³/h (3) Drying Time: 4-6h (4) Acceptable Water Content: 0.001 - 0.003% (10 to 30 ppm) |
2 |
Injection |
(1) Resin Melt Temperature: 270-290℃ (2) Mold Temperature: 8-15℃ (3) Injecting Range: 95mm (4) Injecting Pressure: 75-80bar (5) Holding Pressure: 80-90bar (6) Back Pressure: 2-10bar |
3 |
Blowing |
(1) Preforms Colding Time before Blowing: 24h (2) Oven Temperature: 90-120℃ (3) Blowing Air Pressure: 3MPa (4) Blowing Time: 1.5-3s |