Injection Molding
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TPE Overmolding Temperature Matching
Problembeschreibung
The hard plastic substrate deforms during TPE overmolding, or insufficient TPE temperature causes poor bonding
Ursachenanalyse
TPE overmolding temperature must match the hard plastic substrate: PC substrate TPE temperature 200-220℃, ABS substrate 180-200℃, PP substrate 160-180℃; insufficient temperature gives poor bonding, excessive temperature deforms the hard plastic
Lösung
①Set the TPE temperature according to the hard plastic substrate; ②Preheat the hard plastic to improve bonding; ③Verify temperature matching by mold trial; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
TPE overmolding temperature is a function of the substrate; PC, ABS, and PP each have corresponding windows, and mold trial verification is a necessary step; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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