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Webbing Print



Possible Cause:

(1) Sheet too hot
(2) insufficient vacuum
(3) Sharp corners on deep draw
(4) Improper mould layout
(5) Vacuum rate too fast

Suggested Course of Action:

  • Decrease heating cycle time
  • Decrease heater temperature
  • Check vacuum system for leaks
  • Check for clogged vacuum holes
  • Increase number of vacuum holes
  • Check for proper location of vacuum holes
  • Increase size of vacuum holes
  • Increase radius
  • Increase spacing between moulds
  • Use smaller vacuum holes/restrict main vacuum lines