Extrusion & Post
2 views
Internal stress streaks in PCTG transparent parts
Problem Phenomenon
Transparent products show colored stress streaks under polarized light.
Cause Analysis
Uneven distribution of internal stress generated by flow and cooling during molding, insufficient annealing.
Solution
Increase mold temperature; full annealing; optimize gate position to improve flow.
Key Takeaway
PCTG internal stress streaks affect optical quality.
Was this helpful?
0 people found this helpful
Thank you for your feedback!