Injection Molding
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TPE Overmolding Nylon
Fenómeno del problema
Poor bonding force of TPE overmolded nylon parts
Análisis de la causa
The high surface crystallinity of nylon makes bonding difficult; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience; this mechanism has been repeatedly verified by industry information and should be confirmed first during troubleshooting
Solución
Preheat nylon parts; select nylon-specific overmolding material; surface roughening; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Conclusión clave
Overmolding nylon requires dedicated material plus preheating; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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