Windmoller & Holscher Varex Blown film machine

Number of layers 3
Film structure A B C
Material ldpe , lldpe
Film Width 800

Extruder 1 Layer ref: A
Screw diam 1 60 LD 30

Extruder 2 Layer ref: B
Screw diam 2 90 LD30

Extruder 3 Layer ref: C
Screw diam 3 60 LD30

Die diam (mm) 180
Thickness controll system Yes
Bubble cage yes automatioc diameter control
Take off unit yes oscillating
Rewinder Type Single winder
Rewinder max reel diameter 800
Note for FFS BAGS

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.