Injection Molding
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PETG injection molded product cold slug spots
Problem Phenomenon
Cold slug spots appear on the injection molded product surface, with color and gloss different from the surroundings.
Cause Analysis
Cold slug at the front of the nozzle enters the cavity, nozzle temperature and mold temperature insufficient, cold slug well design insufficient.
Solution
Increase nozzle temperature and mold temperature; clean the nozzle cold slug; optimize the cold slug well to prevent cold slug from entering the cavity.
Key Takeaway
PETG cold slug spots are a manifestation of cold slug mixing in.
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