3 layers ALPINE film blowing machine
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 | EX681 |
| Manufacturer | ALPINE |
| Year | 2004 |
| Number of layers | 3 |
| Film structure | ABC |
| Material | HDPE, MDPE |
| Film Width (mm) | 2200 |
| Extruder 1 Layer ref: | A |
| Screw diam | 50mm |
| Description | Gravimetric doser 1 comp |
| Extruder 2 Layer ref: | B |
| Screw diam | 75 |
| Description | Gravimetric doser 1 comp |
| Extruder 3 Layer ref: | C |
| Screw diam | 50 |
| Description | Gravimetric doser 1 comp |
| Head description | Model HK500, IBC, auto thickness controll |
| Die diam (mm) | 220 |
| Thickness controll system | PLastcontrol capacitive gauge |
| Bubble cage | Motorized |
| Panel for gussets | yes, motorized |
| Take off unit | Rotating |
| Corona treatment | Cason double |
| Web guide | E+L |
| Rewinder description | Make Ghioldi |
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