Material Drying
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PETG extruded sheet gel particles
Fenómeno do problema
Transparent or opaque particles (gel particles) appear in PETG extruded sheets, poor appearance.
Análise das causas
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.
Solução
Use filter screen 80-120μm; regularly clean the screw and barrel; control extrusion temperature uniformly; ensure uniform drying.
Conclusão principal
PETG gel particles are usually related to impurities and local overheating.
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