Extrusion & Post
8 views
PVC melt fracture causes surface defects
Problem Phenomenon
Periodic irregular wrinkles on extrusion/injection surfaces
Cause Analysis
Die exit shear stress exceeds critical value, elastic instability
Solution
Reduce extrusion speed, raise die temperature, enlarge gap
Key Takeaway
Typical rheological problem in extrusion processing
Was this helpful?
0 people found this helpful
Thank you for your feedback!