Neutralising (discharging) electrostatic charged surfaces

Electrostatic charging happens where 2 surfaces are on friction or separated and the surface doesn't lead electricity. In the field of extrusion it happens often on film and sheet extrusion lines. (guiding sheet over rollers, winding and rewinding e.g.)

Measures against static charges

  • Earthing: First step to avoid electrostatic charging is earthing (grounding) of all parts of the machine
  • Humidity: Due to humidity the surface resistance will be reduced and electrostatic charge can be lead away
  • Passive electrostatic discharging with brushes e.g. With brushes (carbon brushes) you can discharge charged surfaces but only if production speed is low. There is danger to contaminate the web with brush wear.

  • Sophisticated active electrostatic discharging: IONstream FUSION.  electrostatic discharging
    Sophisticated neutralising system because of its outstanding AUTODC® Technology (patented by Swiss Hildebrand). It needs only 24V supply voltage! High voltage power module and a  microprocessor is embedded in discharging electrode (neutralizing bar). This unique system provides mainly ions in needed polarity (integrated microprocessor checks the discharging current). Because of its unique technology it is the electrostatic neutralizing system with best performance in the market.
  • For very high web speed and large distances of neutralising bar to the surface and 100% neutralising is required IONstream FUSION can be instaolled also with TRUEDC® Sensor Technology.

 

   AUTO-DC mode:                                                                TRUE-DC mode:

discharging AUTO DCdischarging TRUE DCdischarging options

Download Hildebrand Prospekt: IONstream FUSION  pdf


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