Material Drying
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PETG extruded sheet gel particles
Problem Phenomenon
Transparent or opaque particles (gel particles) appear in PETG extruded sheets, poor appearance.
Cause Analysis
The raw material is mixed with high-melting impurities or crosslinked gel, local screw overheating causes part of the material to degrade into gel, uneven drying causes agglomeration.
Solution
Use filter screen 80-120μm; regularly clean the screw and barrel; control extrusion temperature uniformly; ensure uniform drying.
Key Takeaway
PETG gel particles are usually related to impurities and local overheating.
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