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Athlone Extrusions Website - Non-uniform Blowing
Non-uniform Blowing

Problem:

Non- uniform Billow

Possible Cause:

(1) Uncontrolled sheet heating
(2) Non-uniform air pressure within
(3) Localised cooling of sheet

Suggested Course of Action:

  • Check operation of heaters
  • Improve zone heating control
  • Check for drafts or air currents around heating station
  • Check pressurised air system for leaks billow
  • Check sheet sealing
  • Redirect incoming air
  • Reduce air velocity