Blown Film Machine (Monolayer PE Film)
Monolayer blown film extrusion system for producing 0.01-0.2mm LDPE/HDPE films for general packaging and agricultural mulching applications
The monolayer PE blown film machine is a core solution for efficient production of low-density and high-density polyethylene films. It is widely used in packaging, agriculture, and textile-related applications, enabling stable manufacturing of general packaging films, agricultural films, and related PE film products to meet diverse industry requirements.
The high-speed blown film machine is equipped with a variable-frequency drive (VFD) main motor, ensuring stable speed regulation, controllable production, and energy savings of approximately 30%, effectively reducing operating costs. Wear-resistant screw and barrel assemblies combined with an optimized cooling system allow the line to adapt to multiple film specifications while maintaining consistent film quality and high production efficiency.
Product parameters
| Item | Specification |
| Film material | Polyethylene (LDPE, HDPE, etc.) |
| Film layers | Single layer (expandable according to requirements) |
| Film thickness | 0.01-0.2mm (customizable) |
| Film width | 500-3000mm (customizable) |
| Tensile strength (MD / TD) | ≥15MPa /≥12MPa |
| Elongation at break (MD / TD) | ≥500% /≥400% |
| Light transmittance | ≥90% (standard film);≥85% (functional film) |
| Tear strength | ≥20N/mm |
Equipment parameters
| Item | Specification |
| Main motor type | Variable-frequency drive motor |
| Main motor power | 15-55kW (depending on machine configuration) |
| Screw diameter | 50-90mm |
| Screw & barrel material | 38CrMoAl, nitrided (surface hardness≥HV900) |
| Extrusion output | 50-200kg/h |
| Blown film die diameter | 50-300mm |
| Cooling method | Air cooling+water cooling (optional) |
| Haul-off speed | 5-50m/min |
| Winding diameter | ≤800mm |
| Total installed power | 30-80kW (depending on machine configuration) |
| Machine dimensions (L×W×H) | 6000×2000×4500mm-10000×3000×6000mm (depending on machine configuration) |
| Control system | PLC+touch screen, supports parameter setting, real-time monitoring and fault alarm |
Raw material handling system
The system consists of a material hopper, automatic feeding unit, and an optional mixing device, ensuring stable and continuous raw material supply.
Extrusion system
A variable-frequency motor combined with a 38CrMoAl screw and barrel and precise temperature control is used to melt raw materials and achieve stable extrusion.
Film blowing unit
A blown film die head and compressed air are applied to extrude and inflate the melt into a tubular film bubble.
Cooling and sizing system
A cooling air ring, with an optional water cooling ring, enables rapid and uniform cooling and film stabilization.
Haul-off and flattening system
The haul-off unit works together with gusset boards and flattening rollers to pull the film upward and eliminate wrinkles.
Winding and slitting system
The winder and slitting knife assembly wind the film and slit it to the specified width.
Electrical control system
A PLC and touchscreen interface are used for parameter setting, process monitoring, and fault alarm management.
- High efficiency and energy saving
Variable-frequency motor drive reduces power consumption by approximately 30%, with overall energy utilization efficiency≥85%. - Stable and durable operation
Screw and barrel service life exceeds 8000 hours, with speed fluctuation controlled within ±1%. - High-quality cooling performance
Uniform cooling efficiency≥90%, supporting a finished product yield rate of≥95%. - User-friendly operation
PLC and touchscreen control enable parameter adjustment within 2 minutes, while operator training can be completed in approximately 4 hours. - Wide application range
Suitable for processing both LDPE and HDPE materials, producing films in the 0.01-0.2mm thickness range for packaging, agricultural, and textile-related applications. - Reliable product quality
Full-process control ensures film thickness tolerance within ±3% and light transmittance≥90%.