3 layers MACCHI blown film extruder

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 EX543
Manufacturer MACCHI
Year 2002
Number of layers 3
Overhaul/renovation The triple layer dies, the gravimetric dosing systems, the lineer winders, the electronic control panels, the profile measurement systems, the corona treaters,the web guides, the drives, extruders screws, cooling rings etc are all new and around 10 years old.
Film structure ABC ( Layers distribution A: 30%-25% B: 40%-50% C: 30%-25% )
Material LDPE, LLDPE, BLENDS HDPE, MDPE, mLLDPE . Film thickness min. and max 20 – 200 micron
Film Width (mm) 1600
Output (Kg/h) 350 kg/hr max.capacity, 8.4 tons/day 2.800 tons/year max.capacity
Extruder 1 Layer ref: A
Screw diam 55mm
Description EXTRUDER PLASTEX 55 / 30 D Screw speed of the extruder 120 rpm Gravimetric dosing system – Doteco Grado with 4 components Hydrolic, plate type screen changer ; AC motor 60 kw
Extruder 2 Layer ref: B
Screw diam 80mm
Description EXTRUDER PLASTEX 80 / 25 D Screw speed of the extruder 120 rpm Gravimetric dosing system – Doteco Grado with 4 components Hydrolic, plate type screen changer ; AC motor 120 kw
Extruder 3 Layer ref: C
Screw diam 55 mm
Description EXTRUDER PLASTEX 55 / 30 D Screw speed of the extruder 120 rpm Gravimetric dosing system – Doteco Grado with 4 components Hydrolic, plate type screen changer ; AC motor 60 kw
Head description Gap 2,2 mm .Cooling control system – K design
Die diam (mm) 350mm
Thickness controll system KUNDIG K 100
Corona treatment FERRARINI BENELLI
Rewinder max reel diameter 850mm
Rewinder description Winding shafts : 3 inches pneumomechanical winding shaft - 4 PC ; 6 inches pneumomechanical winding shaft - 5 PC
Additional information Film width min. and max Min = 750 mm / Max = 1600 mm Mechanical speed of the winders from 7 to 150 mt/min Maximum width of film passage on the winders : 1650 mm Electric power 400 Volt 3phase + neutral – 50 hz Installed power 600 KW (approx.) Compressed air pressure 6 bar Operator control touch screen monitor

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