Extrusion & Post
8 Aufrufe
Wrinkles in PET film winding
Problembeschreibung
Transverse or longitudinal wrinkles appear when PET film is wound, increasing the scrap rate.
Ursachenanalyse
Winding tension control is improper (too large, too small or uneven); uneven film thickness causes uneven stress distribution; roller surface friction is improper.
Lösung
Optimize the winding tension curve (tapered tension control); improve thickness uniformity; use spreading rollers and a web guide system.
Wichtigste Erkenntnis
PET film winding quality is a comprehensive reflection of thickness, tension and equipment precision.
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!