Material Analysis
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LLDPE film gel particles - pigment agglomeration
Problem Phenomenon
Color agglomeration points appear in colored film.
Cause Analysis
Poor color masterbatch dispersion, poor compatibility between carrier and LLDPE; insufficient back pressure/mixing.
Solution
①Select compatible color masterbatch; ②increase mixing; ③filtration; ④pre-dispersion.
Key Takeaway
Pigment spots = dispersion and compatibility.
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