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Pro-Heat – Gauge control system for automatic die-heads

Gauge control system for automatic die-heads.

  • It’s a full automatic system suitable to control the cartridge heaters fitted into the die-head (cartridge heaters and die-head not included in the scope of supply).
  • The system controls an existing automatic die, provided with cartridge heaters (not included in the supply scope) being installed on the die, close to the gap.

 

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OPERATING MODE AND FUNCTIONS

 

  • The automatic control system gets the inputs from the thickness sensor and therefore adjusts the temperature of each cartridge control zone, to compensate any deviation of the thickness profile:
    – if a thicker section is detected, the temperature into the relevant control zone is slightly increase, hence the melt is going to be a little over heated, enough to make the gauge thinner;
    – if a thinner section is detected, the temperature into the relevant control zone is slightly reduced, hence the melt is going to be a little under heated, enough to make the gauge thicker.
  • The temperature of each cartridge control zones can be manual adjusted from the operator screen. When in Automatic Mode, all adjustments are controlled automatically by the gauge control software

ONLINE THICKNESS SENSOR KÜNDIG K-500 ROTOMAT

  • The capacitive sensor, on slewing ring, goes around the bubble and measures the film thickness along the circumference, over the frost line.
  • The system calculates the thickness average value and the thickness actual values on each radial position (corresponding to the control zones of the automatic air rings).
  • Rotates continuously in one direction at a minimum rotation time of 36 seconds.
  • Different sizes of slewing rings available for lay-flats from 255 mm up to 3900 mm.
  • Sensors with different coatings available: CRS (chrome coated sensor for standard films, excellent durability with abrasive films), PVD-2 (plasma coated sensor for slightly sticky films, good durability with light abrasive films), PTFE (coated sensor for sticky films, short lifetime with abrasive films).
  • On demand, the PRO-HEAT can be interfaced with any other sensor available in the market.
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