Extrusion & Post
2 views
PET extruded cast film sticking to the roll
Problem Phenomenon
PET cast film sticks severely to the cooling roll and cannot be peeled off normally, producing transverse marks.
Cause Analysis
Cooling roll temperature is set improperly (on the low side); adhesion between the cast film and the roll surface is too large; roll surface roughness is unsuitable.
Solution
Adjust cooling roll temperature to 20-40°C; use chrome-plated mirror-polished cooling rolls; appropriately reduce melt temperature; use electrostatic pinning assistance.
Key Takeaway
PET cast film roll sticking is a matching problem between surface characteristics and roll surface conditions.
Was this helpful?
0 people found this helpful
Thank you for your feedback!