Extrusion & Post
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Gel particles in EAA extruded film
Problembeschreibung
Transparent gel particles of 0.1-0.5mm appear on the surface of EAA extruded film
Ursachenanalyse
High molecular weight components in EAA are not fully melted during extrusion, forming local highly crystalline regions; extrusion temperature too low or insufficient mixing
Lösung
1) Raise the extrusion temperature by 5-10°C to ensure full melting; 2) Increase the length of the screw mixing section; 3) Inspect the raw material to ensure consistent grade; 4) Replace with a finer 120-mesh screen to intercept unmelted particles
Wichtigste Erkenntnis
Gel particles are caused by insufficient melting; raising the temperature and mixing are the key
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