Macchi 7 layers Blown film extrusion line

Number of layers 7
Film structure ABCDEFG
Material Barrier film, LDPE, LLDPE, MLDPE, PA, EVOH
Film Width 2400

Extruder 1 Layer ref: A
Screw diam 1 65 mm
Description 1 Gravimetric dosing unit INNOPLAST, 5 components

Extruder 2 Layer ref: B
Screw diam 2 65 mm
Description 2 Gravimetric dosing unit INNOPLAST, 5 components

Extruder 3 Layer ref: C
Screw diam 3 55 mm
Description 3 Gravimetric dosing unit INNOPLAST, 4 components

Extruder 4 Layer ref: D
Screw diam 4 55 mm
Description 4 Gravimetric dosing unit INNOPLAST, 4 components

Extruder 5 Layer ref: E
Screw diam 5 55 mm
Description 5 Gravimetric dosing unit INNOPLAST, 4 components

Extruder 6 Layer ref: F
Screw diam 6 65 mm
Description 6 Gravimetric dosing unit INNOPLAST, 5 components

Extruder 7 Layer ref: G
Screw diam 7 65 mm
Description 7 Gravimetric dosing unit INNOPLAST, 5 components

Head description Macchi, Air ring K.Design , Dual flow ,
Die diam (mm) 450 mm, Gap 2.4mm
Thickness controll system Hiscan beta+RX Electronic System (double system with IR for EVOH-PA and d Xray for total thickness.
Take off unit Oscillating with cooled calenders width 2200 mm
Corona treatment CASON, year 2018
Web guide E+L
Rewinder Type Double back to back
Rewinder description BO PLUS width max 2350 mm
Note Chiller included for Cooling ring and IBC Structure not included

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.