Injection Molding
3 Aufrufe
Incomplete color clearing when switching color masterbatch
Problembeschreibung
After color change, the previous color still remains after multiple injections
Ursachenanalyse
Previous color material remains in the screw and barrel; accumulated material in dead zones is not completely removed; purging time is insufficient
Lösung
Use high-viscosity purging material of the same matrix for color change; the temperature-difference purging method of heating up then cooling down; disassemble the screw and nozzle for thorough cleaning if necessary
Wichtigste Erkenntnis
Thorough color change is necessary for multi-variety small-batch production
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