1 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 1993
Number of layers 1
Material BOPP
Width (mm) 6000
Head description 1A912 -7 heating zones -gap adj- 1,7 to 3,5 mm Die adapter block
Die width 912 mm
Thickness controll system Thickness control with Evolution Strategy (TCE)
Chill roll unit Double shell with spiral channels working width 1000 mm diam 1750 mm width 1200 mm Pinning airknife -nip roller 300 mm
MDO description Preheating station: consists of 12 preheating rolls diam. 614 mm each
TDO description Transverse Direction orienterFeeding width range: 650-850 mm; max stretch width 7200 mm; exit width range 6200-6700 mm
Flame treatment Gas flame treater unit
Pull roll unit Web width after edge trimming: max 6200 mm; roll face width 6600 mm
Rewinder description Automatic turret winder
Slitter Slitter trim recycling - speed 800 m/min - max width 2x100 m
Additional information Cascade Main Extrusion Metering extruder, barrel diameter 225 mm Melting extruder output: 2200 kg/h, barrel diam. 175 mm

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