Extrusion & Post
3 Aufrufe
Longitudinal thickness fluctuation of PET film
Problembeschreibung
The longitudinal thickness of PET biaxially stretched film fluctuates periodically, affecting winding flatness.
Ursachenanalyse
The extruder or metering pump output pulsates; casting drum speed fluctuates; stretching roller speed ratio is unstable; filter clogging causes pressure fluctuation.
Lösung
Check the condition of the extruder and metering pump; stabilize the casting drum and stretching roller drives; replace clogged screens; use online thickness measurement feedback control.
Wichtigste Erkenntnis
Longitudinal thickness fluctuation of PET film originates from equipment stability.
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!