3-layer blown film machines
PROCESSED MATERIALS:
LDPE, HDPE, LLDPE, mLDPE, PA, EVA, EVOH etc.
1. SCREWS
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Compression type with 2 barrier and 1 mixing zones.
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Made from steel SACM 645 or with bimetallic plating. For special order the screw can be made from steel SKD 61 (for stable work with recycled material);
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Screw L/D 32/1
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Diameters of Screw – 45/55/65/75/90 (on request)
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Feeding section has helicoids’ spiral type grooves for increasing production capacity and wear protection
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Heating is provided by ceramic heaters
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Cooling is performed by axial blowers
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Bearings and gear wheels are lubricated by immersing in oil. Oil cooling is made via heat exchange unit.
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Main bearing is integrated in gear case, which provides constant lubrication.
2. BARRELS
Barrels of screws of Aleko technically designed with integrated material feeding section.
3. GEARBOXES
Gearboxes of all Aleko series are designed for high loads
4. FILTRATION SYSTEM
Aleko blown film machines are equipped with manual type or hydraulic type screen changers.
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Short channels for material flow;
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Temperature maintenance;
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Effective system of air inlet for IBC;
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Working surface with hard chrome plating (thickness 30 mcm)
5. CIRCULAR DIE HEAD (UP TO 5 LAYERS)
Perfect rheology;
6. STACK TYPE DIE HEADS (FROM 5 TO 9 LAYERS)
- Thermal insulation of each layer
- Possibility of changing the number of layers (up to 9 layers)
- Possibility of quick cleaning of the die head
Series can be equipped with the following diameters of die heads:
250/300/350/400/450/500/600 at the customer’s needs
7. COOLING SYSTEM
- Dual lip air ring with the capability of air flow adjustment in narrow segments
- Inner Bubble Cooling (IBC)
- Automatic thickness control system
- Thickness tolerance from 1,5%8. TAKE UP UNIT
- Horizontal oscillating type
9. WINDING UNIT
The winding unit features modular system and is possible to be equipped with single station winder or back-to-back winder. All winders are contact type with tension control system, central and lenghtwise blades system, CPC or EPC system can be installed optionally.
10. CONTROL SYSTEM
- The PLC controllers are used
- PID control of heating elements
- Remote control via Internet access
Technical specifications:
Model |
55/65/55 |
Layer А (outer) |
LDPE |
Layer B (middle) |
LLDPE/HDPE/Recycled PE |
Layer С (inner) |
LDPE |
Capacity of extruder, kg/h |
Up to 400 |
Thickness of film, mcm |
LDPE: 20-200 |
Screw diameters, mm |
55+65+55 |
L/D ratio of screws |
32/1 |
Layers ratio |
Up to 1/8/1 |
Effective width of film, mm |
Up to 2100 |
Dia. Of die head, mm |
300-600 |
Oscillating tower |
Option |
Inner bubble Cooling (IBC) |
Option |
Height,m |
11,6 |
Type of winder |
Single station/ Double station |
Changing of roll |
Automatic/Manual |
