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Macchi 5 layers blown film extruder
EUROPE (Western and Northern)
Number of layers 5
Film structure ABCDE
Material Nylon & EVOH-base barrier Film
Film Width 2200
Output (Kg/h) 480 kg/h
Extruder 1 Layer ref: A
Screw diam 1 65mm
Description 1 Gravimetric Dosing units - 4-comp.
Groove-feed, bi-metal Barrel,
barrier Screw Melt Pressure Sensor before screen change
Extruder 2 Layer ref: B
Screw diam 2 45mm
Description 2 Gravimetric Dosing units - 1-comp, Groove-feed,
bi-metal Barrel, barrier Screw Melt Pressure Sensor before
screen change
Extruder 3 Layer ref: C
Screw diam 3 55mm
Description 3 Gravimetric Dosing units - 4-comp, Groove-feed,
bi-metal Barrel, barrier Screw Melt Pressure Sensor before
screen change
Extruder 4 Layer ref: D
Screw diam 4 45mm
Description 4 Gravimetric Dosing units - 1-comp, Groove-feed,
bi-metal Barrel, barrier Screw Melt Pressure Sensor before
screen change
Extruder 5 Layer ref: E
Screw diam 5 65mm
Description 5 Gravimetric Dosing units - 4-comp, Groove-feed,
bi-metal Barrel, barrier Screw Melt Pressure Sensor before
screen change
Die diam (mm) 450 mm 5-layer Die-head, 10-zones heating,
550 x 2 mm insert for LLDPE IBC with 1 nos.
air chiller bubble control, auto inner bubble exchange by
high speed stepper motored Valve Air ring with
64 heating inserts
Bubble cage 1100~2100 mm layflat motorized
Calibration Cage, ultrasonic web-break detector
Take off unit Horizontal Oscillating Take-up,
AC vector drive
Corona treatment Yes, 2-side
Web guide Yes
Rewinder Type Double back to back
Rewinder max reel diameter 1200
Rewinder description 2-stn contact Winder,
40~250 N web tension, anti- static system.
4 nos. 4†core air shafts.
Note Air chiller exchangers for OBC & IBC
Edge-trim Slitting & blower PLC control.
15” Touch-Screen control. Max 150 m/min.
In a blown film extruder PE granulates (or other polymer) are
melted in an extruder and pushed through a circular die
extruding a tube of molten polymer. Tube is then inflated to
multiples of its initial diameter and cooled to form a thin film.
Bobble is later collapsed and re-winded.