Barmag 7 layer extrusion line

Machine Barmag 7 layer extrusion line
Reference number E18009
Machine manufacturer Barmag
Type of extruder Blown
Year 1989
Number of layers 7
Diameter die 400 mm
Diameter screw(s) 60 – 45 – 60 – 45 - 60
Material & Min – Max thickness PE, PA, EVOH
35 – 200 micron
Max. film width 1150 mm
Max. output 185 kg/hour
Rewind manufacturer Barmag
Rewind type Centre Surface
Back to back
Max. rewind reel diameter 600 mm
Number & sizes airshafts for winder 3" and 6"
Rotating, which part Die
Dosing unit Yes, Colortronic (2003)
Total 14 units
Thickness measurement Yes, Octagon (2000)
Corona treater Yes, AFS (2007)
Inline slitting Yes
Manuals available Yes
Other information 2000: New Octogon measurement system
2003: New dosing units colortronic (14 total)
2007: New: AFS corona treatment
Including Water bath
Addex air ring
Air chiller
Spare parts Yes, optional for additional fee (see pdf)
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
  • blown
  • E18009