Processing Machinery
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Poor dispersion of PET color masterbatch
Problem Phenomenon
PET products colored with color masterbatch show uneven color depth, with color streaks or spots.
Cause Analysis
The carrier resin of the color masterbatch is incompatible with PET; the addition amount is insufficient or mixing is uneven; screw mixing effect is poor.
Solution
Use PET-based color masterbatch (carrier consistent with the matrix); add a static mixer; optimize the screw mixing section design.
Key Takeaway
PET coloring uniformity requires the color masterbatch carrier to match the matrix resin.
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