5 layers BRUCKNER BOPP BOPP / BOPET tenderframe plant

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 BO60
Manufacturer BRUCKNER
Model BOPP
Year 1993
Number of layers 5
Overhaul/renovation 2004 - 2014
Film structure ABCDE
Material BOPP Thickness: 15 - 60 micron Width of film after trim: 6,0 m
Output 3000 kg/h
Width (mm) 6600
Extruder 1 Description tandem of Ø250 and Ø175 mm extruders Max output: 2500 kg/hr
Extruder 2 Description 2 co-extruders Ø120mm with max. output 380 kg/hr Filter: 1 candle filter with surface area 4000cm2 Manufacturer: Battenfeld AC drives
Extruder 3 Description 2 satellite extruders Ø90mm with max output 180 kg/hr Filter: disc filters with a changer Manufacturer: Mitsubishi AC drives
Head description 5 layer Norson EDI die 810mm AUTOFLEX VI-R MULTIFLOW V
Thickness controll system Thickness Gauge: Honeywell Measurex System with a new workstation and software (2013)
Chill roll unit Chill roll 2400mm diam. Air knife . Film and chill roll drying system Water bath
MDO description Brückner Pre-heating via heat box heated by 2 Eclipse (800kW each) natural gas burners 6 stretching rolls (oil heated) 4 annealing rolls (oil heated) 4 nip rolll Tension control at inlet and outlet AC drives
TDO description Manufacturer: Brückner Chain and chain track model: FOK 4.7 Heating system: Eclipse (200kW) natural gas burner for every zone (13 zones), no oil Edge guide system at inlet
Corona treatment Corona treatment station (Sherman)
Rewinder width Kampf non-stop winder Working width: 7000 mm 40 steel cors
Slitter Slitter Rewinder: Atlas 6600 mm
Additional information Material feeding equipment Main extruder: mixing hopper, raw material feeder, regranulate feeder, 2 additives feeders Co-extruder: raw material feeder + 4 component gravimetric system Satellite extruder: raw material feeder Silos: 10 silos 30 tons each Trane Chiller Herbold schredder

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