3 layers BRUCKNER 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 BO59
Manufacturer BRUCKNER
Year 1996
Number of layers 3
Film structure Film width 6300 mm on winder
Material BOPP
Output 2060 Kg/h
Width (mm) 6300
Extruder 1 Description output 105 kg/hr each; L/D 32:1, 100 rpm.
Extruder 2 Description Cascade main extruder, 290 rpm; L/D: 21, 510kw DC.
Extruder 3 Description output 105 kg/hr each; L/D 32:1, 100 rpm.
Die width 833
Chill roll unit Chill roll, Air knife, film and chill roll drying system, water bath.
MDO description 10 pre-heating rolls-oil heating; 6 stretching rolls-circulating oil; 2 annealing rolls-electrical heaters; 5 nip rolls; stretching ratio 1:1 - 1:7; Aux, winder.
TDO description Chain and chain track system F.O.K 4.4.2; Heating system: circulating air via individual heating system/zone (oil heating, motors, fans, sensor, etc); edge guide system at inlet.
Corona treatment 2 corona treatment stations (up and down - Double tretaed)
Pull roll unit Cromed Rolls chilled by water; Edge trim on-line recycling unit; Thickness Gauge Pm 147.
Additional information Max mechanical speed: 250 m/min / upgraded to 300 m/min; AC and PLC:-fully integrated system PLC with 3 operator workstations with trends and reports; Utilities:- Compressor, Boiler, Silos, Mill Rolls, Mill roll Stands (corona and nip), Nip Rolls stands, Over Head Crane (10TM).

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