3 layers WINDMÖLLER & HÖLSCHER VAREX blown film extruder
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 | EX650 |
| Manufacturer | WINDMÖLLER & HÖLSCHER |
| Model | VAREX |
| Year | 2008 |
| Number of layers | 3 |
| Material | LDPE, LLDPE |
| Film Width (mm) | 2100 |
| Extruder 1 Layer ref: | A |
| Screw diam | 60 L/D 30 |
| Extruder 2 Layer ref: | B |
| Screw diam | 90 L/D30 |
| Extruder 3 Layer ref: | C |
| Screw diam | 60 L/D 30 |
| Head description | IBC |
| Die diam (mm) | 550 with 1,25 and 2,25mm gaps |
| Thickness controll system | yes PROCONTROL |
| Bubble cage | Yes |
| Take off unit | Oscillating |
| Corona treatment | Softal |
| Web guide | Yes |
| Rewinder max reel diameter | 1200mm |
| Rewinder description | 4 3 " and 6" winding shafts. Max width 2200mm |
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