Airmould® and Airmould Contour®

  

Airmould® is the patented gas-assisted injection molding process developed by Battenfeld:

Airmould® internal gas pressure
Airmould Contour® external gas pressure

Major advantages:

  • better surface finish
  • higher dimensional stability

Advantages depending on the chosen process:

  • less part weight/material consumption
  • reduced shot volumes/clamping forces
  • reduced cycle times

 

Process steps Airmould®:

  • melt injection into the cavity
  • injection of nitrogen into the melt either through the machine nozzle or through nozzles in the mold
  • complete filling of cavity
  • gas pressure is maintained until the part is sufficiently cooled and has reached dimensional stability
  • reduction of gas pressure prior to mold opening

Process steps Airmould Contour®:

  • mold is completely filled with melt
  • injection of nitrogen between melt and cavity wall through special injection modules
  • throughout the cooling phase, gas pressure acts as holding pressure
  • gas pressure is released prior to mold opening

 

The modular Airmould® system is suitable for gas-assisted injection molding with internal and external gas pressure.

Main components:

  • nitrogen generators: SE series, mobile units, store nitrogen filtered from the surrounding atmosphere through a multi-membrane system
  • pressure generators: DE series, nitrogen is compressed to an operating pressure of 300 bar
  • gas pressure control: stationary or mobile electric control system combined with one or more pressure control modules or monomodules
  • gas injection: either together with plastic material through Airmould® machine nozzles or via Airmould Contour® injection modules

 

Battenfeld offers the following services for Airmould® and Airmould Contour®:

  • technical support from planning to production and beyond
  • counceling, incl. selection of injection molding machine, Airmould® equipment, molds, automation equipment
  • adaptation of part design to the process
  • production tests at one of Battenfeld's labs
  • process technology training at a Battenfeld location or on customers' site
  • technical expertise in mold design
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