Co-Extrusion Blown Film Machine (5-11 Layers PE/PP Films)
Multi-layer blown film extrusion line for manufacturing food packaging films with enhanced barrier properties
Material extrusion system
Seven single-screw extruders equipped with cast aluminum heaters and hardened gearboxes, combined with material hoppers and automatic feeding systems, ensure stable melting and material delivery.
Co-extrusion die head
Seven-layer in-die composite spiral die head with replaceable die lips and mandrels enables uniform layer distribution and consistent film structure.
Primary cooling and sizing system
Water cooling, air blowers, and primary haul-off units complete initial film stabilization.
Stretching and thermal setting system
Secondary haul-off with gusset board, combined with preheating, heating, air-ring cooling, and thermal setting tower, enables biaxial stretching through adjustable draw ratios and optimizes film performance.
Finished film winding system
A 0.55kW rotating back-to-back winding unit works with secondary haul-off at 3-45m/min, ensuring stable and uniform winding.
Electrical control system
Computer-based temperature control, PLC frequency conversion with independent haul-off control, and touchscreen interface enable fully automated operation across the entire process.
- High barrier performance
In-die co-extrusion with 7-11 layers significantly enhances resistance to oxygen, water vapor, and light, making the films suitable for food and pharmaceutical freshness preservation. - High precision control
Temperature control accuracy of ±1°C, independent haul-off speed regulation, and rotating winding ensure film thickness tolerance within ±3% and coil end flatness deviation ≤ 1mm. - Efficient and stable operation
Durable core components support operational efficiency above 90%, with mean time between failures (MTBF) exceeding 1000 hours. - Intelligent and user-friendly operation
The PLC system stores up to 100 production recipes, supports one-touch parameter adjustment, and enables product changeover within 30 minutes, reducing labor dependency and operational cost.