Barmag 7 layer extrusion line

Machine Barmag 7 layer extrusion line
Reference number E18010
Machine manufacturer Barmag
Type of extruder Blown
Year 1996
Number of layers 7
Diameter die 400 mm and 500 mm
Diameter screw(s) 75 (mild grooved) – 60 – 60 – 45 – 75 – 45 (mild grooved)
Material & Min – Max thickness PE, PA, EVOH 35 – 200 micron
Max. film width 1600 mm
Max. output 250 kg/hour
Rewind manufacturer Barmag
Rewind type Back-to-back
Centre surface
New electronics 2007
Max. rewind reel diameter 1000 mm
Number & sizes airshafts for winder 6"
Rotating, which part Take off
Dosing unit Yes, Colortronic 18 units (2015)
Thickness measurement Yes, Octagon (2007)
Corona treater Yes, AFS (2007)
Tower construction included Yes
Manuals available Yes
Including Addex
Air Ring Air Chiller
Special characteristics 2015: New dosing units colortronic (18 total)
2007: New Octagon measurement system
2007: New AFS corona treatment
2007: New electronics on winders
Machine can be seen in production? Yes
Subject to unsold. Although believed to be correct, the machine specifications and lists supplied are based solely upon those provided by the original owners.

Extrusion in the flexible packaging industry can roughly be devided in three kinds of extrusion: blown film extrusion lines, cast film extrusion lines and BOPP extrusion lines.

Blown Film Extrusion
Blown film extrusion is the most common technology to produce plastic film. Blown film extrusion is typically carried out upwards vertically.
Film is made out of polymer material. These polymeres are generally in the form of granulate. This material is melted and then forced or extruded through a die. Air is blwon thourgh a hole in the center of the die. This pressure causes a bubble. This bubble is a thin layer of film. The film is pulled upwards from the die to cool down and winded on the a roll.
Blown film extrusion exists in various layers, the more layers the thicker the film.  The process with more layers is called coextrusion.

  • Extrusion
  • Barmag
  • . 7 layer
  • E18010