Injection Molding
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PETG injection molded product cold slug spots
Fenómeno del problema
Cold slug spots appear on the injection molded product surface, with color and gloss different from the surroundings.
Análisis de la causa
Cold slug at the front of the nozzle enters the cavity, nozzle temperature and mold temperature insufficient, cold slug well design insufficient.
Solución
Increase nozzle temperature and mold temperature; clean the nozzle cold slug; optimize the cold slug well to prevent cold slug from entering the cavity.
Conclusión clave
PETG cold slug spots are a manifestation of cold slug mixing in.
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