Extrusion & Post
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PVB Melt Viscosity Instability
Problembeschreibung
PVB film thickness and performance fluctuate, melt viscosity is unstable, extrusion process is difficult to control.
Ursachenanalyse
PVB extrusion needs to maintain stable melt viscosity; temperature and pressure fluctuation effects; raw material batch differences; insufficient plasticization uniformity; any instability leads to final film defects.
Lösung
①Stable temperature and pressure control; ②Raw material batch management; ③Plasticization system optimization; ④Online monitoring feedback adjustment.; After adjustment, continuously sample to verify the effect, confirm stability before resuming mass production
Wichtigste Erkenntnis
PVB melt viscosity stability is the foundation of film quality; multi-parameter stable control; online monitoring is a modern means.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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