Molding Process
6 Aufrufe
EEA Surface Stress Whitening
Problembeschreibung
Stress whitening on the surface of stressed areas of EEA products, affecting appearance and strength
Ursachenanalyse
Under local stress, EEA molecular orientation causes refractive index differences and whitening; internal stress concentration areas of the product
Lösung
1) Reduce injection speed to reduce orientation stress; 2) Annealing treatment at 80°C/2h to release stress; 3) Product design to avoid stress-concentrating sharp corners
Wichtigste Erkenntnis
Stress whitening is caused by orientation and internal stress; reducing orientation and annealing are key
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