NINGBO PINSHENG MACHINERY CO.,LTD
NINGBO PINSHENG MACHINERY CO.,LTD
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Functionality: The pre-expander uses steam, heat, and pressure to expand the polystyrene beads. The beads are typically pre-expanded to a certain density and size, which is crucial for the final product's quality.
Process: The process usually involves:
Types: There are various types of pre-expanders, including batch and continuous systems. Batch pre-expanders process a set amount of raw material at a time, while continuous pre-expanders work continuously for higher productivity.
Applications: The expanded beads produced by pre-expanders are used in a range of products, such as:
Efficiency and Control: Modern pre-expanders are equipped with advanced control systems to monitor temperature, pressure, and bead density, ensuring consistent product quality and energy efficiency.
| Item | Unit | PSPEC90 | PSPEC120 | |
| Expansion Chamber | Diameter | mm | Ф900 | Ф1200 |
| Volume | m3 | 1.2 | 2.2 | |
| Useable volume | m3 | 0.8 | 1.5 | |
| Steam | Inlet | mm | Ф25 | Ф40 |
| Consumption | Kg/cycle | 100-150 | 150-200 | |
| Pressure | Mpa | 0.6-0.8 | 0.6-0.8 | |
| Compressed air | Inlet | mm | Ф25 | Ф25 |
| Pressure | Mpa | 0.6-0.8 | 0.6-0.8 | |
| Drainage | Condensation | mm | Ф20 | Ф20 |
| Connected load | Instaling power | Kw | 10 | 15 |
| Density | First expansion | g/L | 12-30 | 14-30 |
| Second expansion | g/L | 8-11 | 8-13 | |
| Overall size (LXWXH) | mm | 4700X3000X3200 | 4900X4700X3200 | |
| Weight | kg | 1500 | 1800 | |
| Room height required | mm | 5000 | 5000 | |
| Productivity | 15g/L | kg/h | 150 | 250 |
| 20g/L | kg/h | 200 | 300 | |
| 25g/L | kg/h | 250 | 410 | |
| 30g/L | kg/h | 300 | 500 | |
