Brückner BRUCKNER BOPP / BOPET extrusion machine
EUROPE (Western and Northern)
Number of layers 3
Film structure ABC
Output 3800KG/h, speed on TDO and winder 450m/min
Width (mm) 8200
Extruder 1 Description A 380Kg/h
Extruder 2 Description B 3800Kg/h
Extruder 3 Description C 380Kg/h
Die width 1170mm
Chill roll unit Chill roll diam 2800mm width 1400mm, in waterbath, speed 10-90 mpm
MDO description Pre heating 20 rolelrs diam 614mm, 6 stratching nips 150 mm diam, 4 rollers 614 diam annealing
TDO description Inlet, 6xr pre heating zones (tot 27m); 5xr stretching zones (tot 15m); 5xr annealing zones (tot 15m); Neutral zone 3m;3x Heat set (tot 4,5 m), 1,5m outlet
Corona treatment yes
Rewinder width 8200mm net (roller 8600mm)
Rewinder description Turret type 1300mm max diam
Slitter Included a primary slitter
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.