Injection Molding
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PETG and elastomer overmolding poor bonding
Problembeschreibung
When overmolding TPE/TPU elastomer onto a rigid substrate, the bonding force is insufficient.
Ursachenanalyse
The substrate surface cools quickly and wets poorly, the materials are incompatible, and the substrate surface is untreated.
Lösung
Plasma or primer pretreatment of the substrate surface; increase the overmolding material temperature; select a compatible elastomer.
Wichtigste Erkenntnis
PETG overmolding requires substrate pretreatment and material selection.
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