W&H 7 layer extrusion line

Machine W&H 7 layer extrusion line
Reference number E18005
Machine manufacturer W&H
Model Varex
Type of extruder Blown
Year 2000
Number of layers 7
Diameter die 450 mm
Lip opening 2,2 mm
Diameter screw(s) 90-60-60-70-60-60-70
L/D ratio screw(s) 30:1
Material & Min – Max thickness LDPE, LLDPE, Nylon, Nylon 66, EVOH,
Metalorene, HOPE, Propylene, EMA, EAA,
Kresin, COC, etc. Barrier &
Breathable film.
Max. film width 2200 mm
Max. output 275 kg/hour
Rewind manufacturer W&H
Rewind type Double turret rewinders
Max. rewind reel diameter 900 mm
Rotating, which part Take off
Dosing unit Yes, Gravimetrick
Thickness measurement Beta thickness auto profile gage
Edge guide(s) Yes,
Corona treater Yes, 4 side 15kw pillar treater
Inline slitting Yes, including edge trim
Tower construction included Yes
Other information Extruder (G) Varex 70 mm (Outer) Extruder
(F) Varex 60 mm (Outer Tie) Extruder
(E) Varex 60 mm (Middle Outer) Extruder
(D) Varex 70 mm (Middle) Extruder
(C) Varex 60 mm (Middle Inner) Extruder
(B) Varex 60 m (Inner Tie) Extruder
(A) Varex 90 mm (Inner)
Including Optifil 2
Auto Die Gap
Addex Dual Lip Air Ring
Shaft extractor
New IBC system (not jet installed)
Subject to unsold. Although believed to be correct, the machine specifications and lists supplied are based solely upon those provided by the original owners.

Varex Extruders
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 layes the thicker the film.  The process with more layers is called coextrusion.

W&H, 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 Lengerichr

  • W&H
  • . 7 layer
  • blown
  • Varex
  • E18005

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