Processing Machinery
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HDPE trash can
Problem Phenomenon
Outdoor trash cans embrittle and crack after a few years
Cause Analysis
Outdoor UV aging embrittles HDPE, and the barrel body edges crack first; 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 an anti-UV carbon black grade; thicken the barrel body edges; manage according to outdoor life; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes, to facilitate locating effective measures
Key Takeaway
Outdoor trash cans must use anti-UV grades; 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 future problems
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