3-layer blown film machines

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PROCESSED MATERIALS:

LDPE, HDPE, LLDPE, mLDPE, PA, EVA, EVOH etc.


1. SCREWS

  • Compression type with 2 barrier and 1 mixing zones.

  • 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);

  • Screw L/D 32/1

  • Diameters of Screw – 45/55/65/75/90 (on request)


  • 2. BARRELS

    Barrels of screws of Aleko technically designed with integrated material feeding section.
  • Feeding section has helicoids’ spiral type grooves for increasing production capacity and wear protection

  • Heating is provided by ceramic heaters

  • Cooling is performed by axial blowers


  • 3. GEARBOXES

    Gearboxes of all Aleko series are designed for high loads
  • Bearings and gear wheels are lubricated by immersing in oil. Oil cooling is made via heat exchange unit.

  • Main bearing is integrated in gear case, which provides constant lubrication.


  • 4. FILTRATION SYSTEM

    Aleko blown film machines are equipped with manual type or hydraulic type screen changers.

    5. CIRCULAR DIE HEAD (UP TO 5 LAYERS)

    Perfect rheology;
  • Short channels for material flow;

  • Temperature maintenance;

  • Effective system of air inlet for IBC;

  • Working surface with hard chrome plating (thickness 30 mcm)



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

Order additional specifications