Processing Machinery
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MP material changeover residue
Problembeschreibung
after MP material changeover, the first 5-10 products contain previous material residue, color difference and property deviation
Ursachenanalyse
large amount of previous material residue in the barrel and screw; incomplete cleaning, residue in dead zones; insufficient purging material amount
Lösung
1) increase purging material to 2-3 times the barrel capacity; 2) increase rotation speed and temperature during cleaning to accelerate removal; 3) disassemble the screw to thoroughly clean dead zones
Wichtigste Erkenntnis
changeover residue is caused by incomplete cleaning; thorough cleaning and disassembly are key
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