Molds & Tooling
1 views
PMMA Weld Lines
Problem Phenomenon
Visible meeting lines on transparent parts, weak strength.
Cause Analysis
Two melt fronts merge with insufficient temperature and poor venting; transparent part weld lines are both an appearance and a strength problem.
Solution
①Raise melt temperature and mold temperature; ②Venting at the merging; ③Adjust the gate to avoid optical zones and load-bearing zones; ④Increase speed.
Key Takeaway
Weld lines = position design first.
Was this helpful?
0 people found this helpful
Thank you for your feedback!