Processing Machinery
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Incomplete cleaning during material/color change causes mixing or color difference
Problem Phenomenon
Incomplete cleaning during material/color change causes mixing or color difference
Cause Analysis
Incomplete barrel cleaning, residual old material
Insufficient screw cleaning time
Poor compatibility between new and old materials, poor interface
Insufficient purging amount during color change, color difference
Improper cleaning agent selection, residual contamination
Solution
Fully clean the barrel and screw
Extend cleaning time to ensure thoroughness
Consider compatibility of new and old materials
Increase purging amount to ensure color consistency
Select suitable cleaning agents
Key Takeaway
Material/color change requires full cleaning and purging
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