3 layers DMT BOPP / BOPET extrusion machine
Biaxially oriented polypropylene (BOPP) and Biaxially oriented polyester (BOPET) are commonly produced in tender-frame lines. In these lines material is melted through a flat extrusion die (T-die) and solidified onto a cooled roller. Material is then stretched in machine direction in an MDO. Thereafter material is stretched in transversal direction in a TDO. These processes deliver a molecule orientation in both axes, this enhances many of their properties, particularly the mechanical, impact, barrier and optical properties.
| Machine Code | BO14 |
| Manufacturer | DMT |
| Year | 1995 |
| Number of layers | 3 |
| Film structure | ABC |
| Material | BOPP |
| Width (mm) | 4200 |
| Extruder 1 Description | A - SCREW DIAM 50MM - DAVIS STANDARD |
| Extruder 2 Description | B - SCREW DIAM 200MM - DAVIS STANDARD |
| Extruder 3 Description | C - SCREW DIAM 50MM - DAVIS STANDARD |
| Head description | 3 LAYER COEX FEEDBLOCK,DIE MANUFACTURER: EDI |
| Die width | 650 |
| Thickness controll system | AUTOMATIC THICKNESS CONTROL, 22 ADJUSTMENT BOLTS |
| Chill roll unit | DIAM 1400MM; WIDTH 900MM |
| MDO description | number of heating rollers: 8 oil heated,600mm diameter; number of stretching rollers: 4 oil heated,150mm diameter. Number of annealling rollers: 2 oil heated, 600mm diameter |
| TDO description | Width at the start: 450 – 650 mm; Width at the exit:4000 – 4500 mm;Type of heating:Oil Heated; Total length: 33M Pulling section 4500mm rol face width, max film width before edge trim 4400mm |
| Corona treatment | SOFTAL 20KW; 10 BLADE ELECTRODE |
| Flame treatment | NO |
| Rewinder width | 4200 |
| Rewinder description | REWINDER DMT; Two-position turret center driven |
| Slitter | ATLAS SLITTER |
| Additional information | 2 Thickness measurement: :Measurex Beta Gauge, two gauges, after chill roll and pull roll stand.; Edge trim and re-feeding system included: UP TO 300kg/h capacity, 75-150mm edge trim width.; SLITTER REWINDER ATLAS CDE 820 INCLUDED; Water chiller included: :Climavaneta WRATB 1604, 370 kw. |
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