KIRION® Die Heads

  • Unique pre-distributor design
  • Computer optimised axial spiral mandrel for
    • Short residence time
    • short purging times = fast product change
    • Minimized film gauge tolerances
    • Reduced raw material use
  • Designed for high pressure and high output

 

    Air Rings:

  • Hurricane style for optimum air flow
  • Double as well as single lip air ring inserts
  • Improved cooling for high output

Optional Equipment:

  • Movable die cart with integrated air distribution system
  • Different profile control systems
  • Inner gap ring heating
  • Outer gap ring heating
  • Frequency control for blowers

Pre-distributor - Design and precision
-Binary stack pre-distributor

    Advantages for a homogeneous melt pre-distribution
     

  • Melt with highest velocity turned into melt with lowest velocity
    • Narrow range of residence-time profile
  • Lowest shearing passes over to highest shearing
    • Narrow range of temperature profile

    Additional advantages
     

  • Small relation of surface to volume
  • Low pressure drop
  • Good self-cleaning
  • Stack-type pre-distributor results in a lower height of the blown film die

Design and precision of the inner die gaps and spiral mandrels
-Axial Spiral Mandrels

Advantages for homogeneous melt distribution
 

  • Low opening forces
  • High accuracy of the inner die gaps over a wide range of different layer distributions and polymers
  • Short confluence of the different layers
    • Short joint flow path of the multi-layer flow – Prevention of layer mixing
    • Reduction of thermal load on sensitive polymers such as EVOH due to hotter layers like PA
    • Nearly same lamination pressure for tie layers
  • No 90° diversion after the spiral mandrels
    • Prevention of layer mixing

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