Blown Film Extruder
High-Performance Blown Film Extruder for Premium Plastic Film Production
Our industrial-grade Blown Film Extruder delivers exceptional performance for manufacturing high-quality plastic films with precise thickness control. Designed for continuous operation and energy efficiency, this machine meets the needs of various packaging applications.
Key Features
- Advanced screw design for optimal material melting and mixing
- Precision temperature control system (±1°C accuracy)
- Automatic thickness monitoring with feedback adjustment
- Multi-layer co-extrusion capability (up to 7 layers)
- Low energy consumption design with variable frequency drives
- User-friendly touchscreen control interface
Technical Specifications
| Parameter | Specification |
|---|---|
| Output Capacity | 50-800 kg/h (depending on model) |
| Film Width | 500-3000 mm |
| Film Thickness | 0.01-0.25 mm |
| Bubble Diameter | 150-1500 mm |
| Screw Diameter | 45-150 mm |
| L/D Ratio | 30:1 to 33:1 |
| Heating Zones | 5-7 zones with individual control |
| Power Consumption | 25-250 kW (depending on model) |
Blown Film Extruder FAQ - Maintenance Questions
Q: How often should I clean the Blown Film Extruder?
A: Regular cleaning should be performed every 500 operating hours or when changing materials. The screw and die should be thoroughly cleaned using appropriate purging compounds. More frequent cleaning may be needed when processing heat-sensitive materials or when switching between incompatible polymers.
Material Compatibility
Our Blown Film Extruder handles a wide range of thermoplastic materials:
- LDPE, LLDPE, HDPE
- PP, CPP
- PA (Nylon)
- EVA
- Biodegradable polymers (PLA, PBAT)
- Barrier materials (EVOH, PVDC)
Optional Features
| Option | Description |
|---|---|
| Automatic Gauge Control | Real-time thickness monitoring with automatic adjustment |
| IBC System | Internal Bubble Cooling for higher output rates |
| Multi-Layer Configuration | 2-7 layer co-extrusion for specialized films |
| Surface Treatment | Corona or flame treatment for improved printability |
Blown Film Extruder FAQ - Operational Questions
Q: What is the typical setup time for a Blown Film Extruder?
A: Setup time varies depending on film specifications and material changes. For standard LDPE films with no material change, the machine can typically reach stable operation within 30-45 minutes after heating startup. More complex setups (multi-layer films, new materials) may require 1.5-2 hours. Proper pre-heating and using trained operators significantly reduce setup time.
Performance Comparison
| Feature | Standard Model | High-Performance Model |
|---|---|---|
| Output Rate | 50-300 kg/h | 300-800 kg/h |
| Thickness Variation | ±5-8% | ±3-5% |
| Energy Consumption | 0.35-0.45 kWh/kg | 0.25-0.35 kWh/kg |
Blown Film Extruder FAQ - Technical Questions
Q: How do I troubleshoot unstable bubble formation in my Blown Film Extruder?
A: Bubble instability can be caused by several factors: First, check temperature uniformity across all zones (variations should be within ±2°C). Second, verify the die gap is properly adjusted (typically 0.8-1.5mm for most applications). Third, examine the cooling system - ensure proper air flow and temperature from the cooling ring. Fourth, confirm material properties (MFI should be appropriate for the application). Finally, check for proper screw speed and haul-off rate synchronization.
Safety Features
- Emergency stop buttons at multiple locations
- Over-temperature protection with automatic shutdown
- Motor overload protection
- Safety interlocks on all access doors
- Ground fault circuit interruption
