Material Drying
5 views
PET Sheet Extrusion Bubbles
Problem Phenomenon
Bubbles inside the sheet.
Cause Analysis
Water-containing hydrolysis produces gas; drying dew point not up to standard.
Solution
①Dehumidifying drying dew point ≤-40℃; ②check the drying system; ③vacuum check of the venting section.
Key Takeaway
Bubbles = drying dew point.
Was this helpful?
0 people found this helpful
Thank you for your feedback!