Extrusion & Post
3 Aufrufe
PET extrusion output fluctuation and surging
Problembeschreibung
PET extruder output fluctuates periodically, accompanied by pressure fluctuation and current swing.
Ursachenanalyse
Feed zone temperature too high, material melts prematurely and wraps the screw (bridging), screw design unsuitable for PET (improper compression ratio), poor feeding.
Lösung
Reduce feed zone temperature (water cooling 60-80°C); use PET dedicated screw (compression ratio 2.5-3.0:1); check feeding.
Wichtigste Erkenntnis
PET extrusion surging is often caused by feed zone problems; screw design and temperature control are fundamental.
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!