W&H 5 layer blownfilm line

Machine W&H 5 layer blownfilm line
Reference number E16038
Machine manufacturer W&H
Model Varex
Type of extruder Blown
Year 1998
Number of layers 5
Diameter die W&H Die 500 with Mulitcool
Lip opening 2,5
Diameter screw(s) 70-50-50-50-70
L/D ratio screw(s) 30D
Material & Min – Max thickness Barrier film 10 – 200 mu
Max. film width 1420 mm
Max. output 380 kg/hour
Rewind manufacturer Afex with Lenze Drive Retrofit incl. Safety Concept
Rewind type Contact, Gab and LPC
Max. rewind reel diameter 1000 mm
Number & sizes airshafts for winder 5 pics, 3inch and 6inch
Type of screen changer W&H, manuel system
Dosing unit Main component with a few side components
Thickness measurement No
Edge guide(s) Yes
Corona treater No
Inline slitting Yes, two up
Inline perforation No
Tower construction included No
Manuals available Yes
Special characteristics 5 layer barrier film
Subject to unsold. Although believed to be correct, the machine specifications and lists supplied are based solely upon those provided by the original owners.

W&H 5 layer
(Windmöller & Hölscher)

The W&H Group produces extruders, printing presses en converting machines. For more than 140 years W&H has been manufacturing converters for flexible packaging. They have sold over 5000 machines in more than 140 countries. This German based company has its plant in Lengerich.


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. The 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.

  • Extruder
  • W&H
  • E16038
  • blownfilm

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