Material Drying
11 Aufrufe
Product bubbles and silver streaks
Problembeschreibung
Bubbles and silver streaks appear inside and on the surface of PES products
Ursachenanalyse
Insufficient drying with moisture content exceeding the standard (PES requires 150°C/3-4h drying); processing temperature too high exceeding 370°C causing slight decomposition; holding pressure and compaction degree insufficient
Lösung
Strictly implement the 150°C/3-4h drying standard; control barrel temperature at 310-370°C; increase holding pressure and time for full compaction
Wichtigste Erkenntnis
PES processing is extremely sensitive to moisture; drying is the first quality control point
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