3 layers ALPINE blown film extruder
Raw material most commonly used are low density polyethylene (LDPE) and High density polyethylene (HDPE). These are often used in blends with other polymers and additives.
| 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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