Injection Molding
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Jetting Marks on the Surface of PC Products
Problembeschreibung
Jet-like serpentine flow marks appear near the gate of PC products.
Ursachenanalyse
The gate size is too small, and the melt enters the cavity in a jetting form; the injection speed is too fast.
Lösung
Enlarge the gate and use a fan gate; reduce the injection speed in the gate area; use multi-stage injection.
Wichtigste Erkenntnis
PC jetting marks are a manifestation of unstable mold filling.
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