In the PET sheet manufacturing sector, parallel twin-screw main extruders have become the mainstream choice over traditional single-screw units. Today, we break down the core advantage from an energy-saving perspective.
- Single-screw PET sheet production line equipped with JWS120 + JWS65 single-screw main extruders
- Parallel twin-screw PET sheet production line fitted with the JWP75 co-rotating parallel twin-screw main extruder
A critical distinction lies in the auxiliary drying system: the single-screw setup requires an additional crystallization and dehumidification system with a total power consumption of 132 kW, while the parallel twin-screw extruder eliminates the need for this entire supporting system.
- Annual production days: 250 days approx
- Daily running hours: 24 hours
- Unit electricity price: 1 RMB per kWh
Annual power cost savings for the parallel twin-screw solution:
132 kW × 1 RMB/kWh × 24 h × 250 days=792,000 RMB
PET sheet line with a parallel twin-screw main unit. This remarkable cost advantage makes parallel twin-screw extruders an extremely cost-effective investment for PET sheet manufacturers.
