3 layers MACCHI film blowing machine

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.

Machine Code EX691
Manufacturer MACCHI
Number of layers 3
Overhaul/renovation Complete renovatin in 2010-2015. Hot part, extruders and extrusion head of year 2000, screws and barrels new in 2010, New control cabinets, PLC, HMI, drives in 2010, New thickness control and ai ring in 2015, Eurochiller of 2016, New IBC with width control and ultrasonic sensors 2016, New winder in 2010, new corona treatment in 2010
Film structure ABC
Material LDPE, LLDPE, MDPE, HDPE (Blends)
Film Width (mm) 2800
Output (Kg/h) 600
Extruder 1 Layer ref: A
Screw diam 80mm L/D30
Description Gravimetric dosers Doteco model Blendo (continuous) 4 components, leverage screen changer
Extruder 2 Layer ref: B
Screw diam 120mm L/D30
Description Gravimetric dosers Doteco model Blendo (continuous) 4 components, leverage screen changer
Extruder 3 Layer ref: C
Screw diam 80mm L/D30
Description Gravimetric dosers Doteco model Blendo (continuous) 4 components, leverage screen changer
Die diam (mm) 700mm gap 3.2mm
Thickness controll system K design gauge and automatic profile control on Karat air ring (year 2015)
Bubble cage Yes, 4 ultra sonic sensors, max opening 5,4m circumpherence
Panel for gussets No
Take off unit Rotating
Corona treatment Mero (year 2010)
Web guide Yes
Rewinder description Macchin Model BOPLUS, contact and surface driven. year 2010
Additional information Year 2000-2015

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