Injection Molding
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LDPE '2079851475616104452 Black Specks
Problem Phenomenon
Black specks on light-colored parts.
Cause Analysis
Dead-spot carbonization and raw material contamination.
Solution
①Clean the machine; ②check the material source; ③avoid high-temperature idling; ④purge with material change.
Key Takeaway
Black speck = carbonization and contamination.
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