Molds & Tooling
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PC Mold Release Agent Induced Streaks
Fenómeno del problema
After using mold release agent, streaks and haze appear on the product surface, especially obvious on transparent parts
Análisis de la causa
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
Solución
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
Conclusión clave
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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