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Tearing While Forming Print

Problem:

Tearing of Sheet whilst Forming

Possible Cause:

(1) Sheet too hot
(2) Poor material distribution
(3) Pre-stretch too large
(4) Sheet cold

Suggested Course of Action:

  • Decrease heating cycle time
  • Decrease heater temperature
  • Pre-heat sheet
  • Check for controlled heating pattern
  • Reduce billow to blowing rate
  • Reduce billow temperature
  • Increase heating cycle time
  • Increase heater temperature