Molds & Tooling
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PC Sticking to Mold (Demolding Difficulty)
Problembeschreibung
The product tightly wraps the core, demolding scratches it or even punches through, requiring manual intervention, and the cycle is affected.
Ursachenanalyse
PC has a large gripping force on the mold surface; excessive holding pressure, improper mold temperature, insufficient draft angle, and poor cavity polishing all aggravate mold sticking; the deep-cavity vacuum adsorption effect also superimposes.
Lösung
①Reduce holding pressure and melt temperature; ②Polish the cavity and grind along the demolding direction; ③Increase the draft angle; ④Improve ejection balance; ⑤Set an air intake structure for deep-cavity parts to prevent vacuum adsorption.
Wichtigste Erkenntnis
PC has large demolding resistance, and mold draft and polishing must meet higher standards: reduce pressure and temperature to reduce gripping, draft and polishing to reduce resistance, deep cavities to prevent vacuum; PC's demolding margin design must be stricter than general-purpose materials.
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