Processing Machinery
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EVA internal unmelted particles
Problembeschreibung
Unmelted transparent or translucent particles appear inside EVA products
Ursachenanalyse
Insufficient screw plasticizing capacity with low temperature; feeding amount too large exceeding the plasticizing capacity; EVA melting temperature too high
Lösung
1) Increase processing temperature to ensure full melting; 2) Reduce feeding amount to match plasticizing capacity; 3) Increase the screw mixing section
Wichtigste Erkenntnis
Unmelted particles are caused by insufficient plasticization; increasing temperature and reducing feeding are key
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