3 layers DOLCI blown film 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 EX565
Manufacturer DOLCI
Year 1997
Number of layers 3
Film structure ABC
Material LDPE
Film Width (mm) 1500
Extruder 1 Layer ref: A
Screw diam 55mm
Extruder 2 Layer ref: B
Screw diam 75mm
Extruder 3 Layer ref: B
Screw diam 55mm
Head description Die gap 2mm
Die diam (mm) 300 mm
Thickness controll system Thickness film 0,2mm

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