Injection Molding
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PETG '2079851475616104452 color masterbatch carrier mismatch causing spots
Problem Phenomenon
Color masterbatch disperses poorly in the product, producing color spots and stripes.
Cause Analysis
The color masterbatch carrier resin (such as PE) is incompatible with PETG, and the dispersed phase is coarse.
Solution
Select PETG-based color masterbatch; use liquid color masterbatch or high-concentration color masterbatch; increase screw mixing.
Key Takeaway
PETG uniform coloring requires color masterbatch with a matching carrier.
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