Extrusion & Post
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Frequent screen clogging in EEA extrusion
Problembeschreibung
EEA extrusion requires screen replacement every 2-3h, clogging causing sudden pressure rise and output decline
Ursachenanalyse
Many gel particles and impurities in the raw material; screen mesh too high intercepting a large number of particles; filler or color masterbatch agglomerating and clogging the screen
Lösung
1) Select raw material with low gel content; 2) Adopt stepped screens 40/80/120 mesh; 3) Add filler and color masterbatch by masterbatch method to reduce agglomeration; 4) Install an automatic screen changer to reduce downtime
Wichtigste Erkenntnis
Screen clogging is caused by impurities and improper configuration; raw material control and stepped screens are the key
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