Injection Molding
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Incomplete screw cleaning in PCTG '2079851475616104452
Problem Phenomenon
Cross-contamination occurs during product changeover.
Cause Analysis
Previous material residue in the screw not fully displaced, insufficient cleaning material amount.
Solution
Use dedicated cleaning material for thorough cleaning; staged temperature cleaning; disassemble and clean the nozzle.
Key Takeaway
PCTG product changeover requires strict cleaning procedures.
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