Dolci 3 layers Blown Film

Number of layers 3
Film structure ABC
Material LDPE/LLDPE
Film Width (mm) 1600

Extruder 1 Layer ref: A
Screw diam 55
Lever filter changer

Extruder 2 Layer ref: B
Screw diam 60
Lever filter changer

Extruder 3 Layer ref: C
Screw diam 55
Lever filter changer

Head description coex3
Die diam (mm) 300
Thickness controll system Yes
Bubble cage Yes
Panel for gussets Yes
Take off unit Oscillating 1800mm
Corona treatment Yes
Web guide Erhard+Leimer
Rewinder max reel diameter 800
Additional information Exact Evolution 10 2002 year Supporting tower

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.