Equipment Components and Functions
1. Raw Material Handling System
Automatic dosing system: Precisely controls the ratio of main material (PE pellets) to additives (antioxidants, UV stabilizers, etc.).
Drying and conveying: A dehumidifying dryer ensures moisture-free raw materials, while a vacuum feeder enables automated material supply.
2. Extrusion System
Multi-layer co-extrusion die:Designed for 2-3 layer co-extrusion (e.g., middle layer for anti-seepage + surface layer for UV resistance), with a die width of up to 6-12 meters.
High-performance extruder:Screw design:Barrier or grooved feed screws ensure uniform plasticization (L/D ratio typically 25:1-33:1).
Temperature control accuracy:±1°C, with zoned heating (5-7 sections) to accommodate different melting requirements.
3. Forming and Cooling System
Cast film forming:
The melt is extruded through a T-die and rapidly solidified via chill rolls or water baths.
Multi-stage cooling:
Primary cooling:Dual-sided water-cooled rolls (controlled water temperature, ±0.5°C).
Secondary cooling:Air knives + cooling rolls to eliminate internal stress.
4. Thickness Control and Inspection
Automatic thickness gauge: Beta-ray or infrared scanning provides real-time feedback to the control system, adjusting die bolts ( ±0.01 mm).
Edge thickness control: Automatically adjusts die lip opening to prevent edge thickening.
5. Traction and Flattening System
Multi-roller traction: Servo motor-driven with closed-loop tension control (prevents stretching deformation).
Flattening device: Curved rollers or expanders eliminate film wrinkles.
6. Surface Treatment Module (Optional)
Textured embossing: Embossing rollers create single/double-sided textures to enhance friction coefficient (roughness 0.3-1.0 mm).
Corona treatment: Improves surface tension for better lamination or welding.
7. Winding and Slitting
Dual-position winder: Automatic core switching, with a maximum winding diameter of 2.5 meters (load capacity >10 tons).
Online slitting: Rotary blade slitting with a width tolerance of ±1 mm.
8. Intelligent Control System
PLC + HMI: Centralized control of temperature, speed, tension, etc., with recipe storage.
Defect detection: High-resolution CCD cameras automatically identify and mark bubbles or impurities.
| Model |
JW150+JW150-4000 |
JW180+JW180-8500 |
| Products width(mm) |
4000 |
8500 |
| Products thickness(mm) |
0.5-3 |
0.8-3 |
| Extruder model |
JW150+JW150 |
JW150+JW150/JW180+JW180 |
| Capacity(kg/h) |
1200-1500 |
1500-2500 |
Application: The main function of geomembrane is seepage control and isolation, often used in large reservoir leakage control, dam waterproofing, pool waterproofing, high-speed railway tunnel construction, human defense projects, landfills, artificial lake water-proofing, etc.
1.Classification by Material Type
| Type |
Features |
Applications |
| HDPE Geomembrane |
HIgh strength,chemical resistance,UV stability(20-50 years lifespan) |
Landfills,mining,reservoirs |
| LDPE/LLDPE Geomembrane |
High flexibility and puncture resistance |
Artificial lakes,landscaping,tunnels |
| Composite Geomembrane |
PE film +nonwoven fabric,enhanced friction and tensile strength |
Roadbeds,railway anti-seepage |
2.Classification by Function
| Type |
Features |
| Standard |
Basic impermeability(0.2-3.0)mm thickness |
| UV-Resistant |
Carbon black/UV stabilizers for extended outdoor use |
| Chemical-Resistant |
Resists acids,alkalis,and salt spray |
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