Molds & Tooling
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PC Mold Release Agent Induced Streaks
Problembeschreibung
After using mold release agent, streaks and haze appear on the product surface, especially obvious on transparent parts
Ursachenanalyse
Mold release agent residue forms a film on the product surface and may penetrate into the surface layer, inducing internal stress and surface energy changes; on transparent parts it appears as haze spots, and becomes a hidden danger of subsequent cracking and poor painting
Lösung
①Avoid using mold release agent as much as possible, replacing it with polishing the mold and optimizing the draft angle; ②if it must be used, select a low-viscosity PC-compatible type and spray an extremely small amount; ③wipe the sprayed products with solvent for verification
Wichtigste Erkenntnis
Mold release agent does more harm than good to PC; do not use it if possible, and if it must be used, select a compatible type and strictly control the dosage; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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