Processing Machinery
8 Aufrufe
HDPE equipment screw
Problembeschreibung
HDPE plasticization is uneven, unmelted particles appear in the product, and back pressure adjustment has limited effect
Ursachenanalyse
HDPE is suitable for general-purpose screws with a compression ratio of 2.0-3.0; too low a compression ratio causes insufficient plasticization, and too high causes large shear heat; back pressure only needs to ensure melt uniformity, and too high is useless
Lösung
①Screw compression ratio 2.0-3.0; ②back pressure at the low limit to ensure uniformity; ③for poor plasticization check screw wear and temperature; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
HDPE screw selection is lenient but has boundaries; a 2.0-3.0 compression ratio plus low back pressure is the standard configuration; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!