Processing Machinery
2 views
LDPE Stress Cracking
Problem Phenomenon
LDPE containers crack after holding detergent
Cause Analysis
LDPE has limited resistance to environmental stress cracking, and active agents induce it; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
Select high-ESCR grades; reduce stress in the structure; compatibility verification; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes, so as to locate the effective measure
Key Takeaway
LDPE stress cracking selects material according to ESCR; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
Was this helpful?
0 people found this helpful
Thank you for your feedback!