Molds & Tooling
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LCP Sticking to Mold and Demolding Difficulty
Fenómeno del problema
【Problem Phenomenon】LCP thin-wall products locally adhere to the cavity, with whitening, ejector puncture or deformation during ejection
Análisis de la causa
For thin-wall deep-cavity products with large gripping force, insufficient draft angle or wrong polishing direction, plus local vacuum adhesion and unbalanced ejection, cause mold sticking; Celanese troubleshooting lists a special item on mold sticking
Solución
Increase the draft angle and polish along the demolding direction; increase the number of ejector pins to balance the ejection force; check cavity vacuum adhesion and provide air intake; appropriately extend cooling to reduce gripping force
Conclusión clave
Mold sticking of LCP thin-wall parts is mainly caused by mold draft angle, polishing and ejection balance; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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