Material Drying
2 Aufrufe
PMMA Silver Streaks (Gas Streaks)
Problembeschreibung
Silver streaks on the product surface, mostly occurring near the gate.
Ursachenanalyse
Vaporized moisture or volatiles follow the melt filling and leave streaks on the surface; insufficient drying, excessive melt temperature decomposition, and poor venting all induce them.
Lösung
①Strengthen drying; ②Lower the melt temperature; ③Increase back pressure for venting; ④Improve mold venting.
Wichtigste Erkenntnis
Silver streaks = check three: moisture + decomposition + venting.
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