Bielloni Coex 3 3 layers blown film plant

Number of layers 3
Film Width 2000
Output (Kg/h) 250 kg/h

Extruder 1 Layer ref: A
Screw diam 1 65 mm
Description 1 Gravimetric dosing unit Contrex M+S

Extruder 2 Layer ref: B
Screw diam 2 80 mm
Description 2 Gravimetric dosing unit Contrex M+S

Extruder 3 Layer ref: C
Screw diam 3 65 mm
Description 3 Gravimetric dosing unit Contrex M+S

Head description TRO
Die diam (mm) 2 dies inserts 350 mm diam gaps 1,7 and 2,2 mm
Thickness controll system CONTREX
Panel for gussets Yes
Take off unit Oscillating
Corona treatment MARTIGNONI
Rewinder description SXO
Note Microperforator Gusset units Option Print unit in line Total height 10 mt

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.