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Athlone Extrusions Website - Surface Marks
Surface Marks

Problem:

Appearance Surface Marks

Possible Cause:

(1) Dirty Mould
(2) Mould too hot or too cold
(3) Poor mould surface
(4) Dirty/damaged sheet surface
(5) Air entrapment
(6) Water droplets

Suggested Course of Action:

  • Clean mould; increase frequency of cleaning
  • Increase mould temperature
  • Decrease Mould temperature
  • Smooth/polish surface
  • Improve handling and storage techniques to protect sheet; clean sheet
  • Add vacuum holes in affected area
  • Lightly sand surface area
  • Check all hose pipes, gaskets etc. for water leaks