Processing Machinery
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HDPE Detergent Bottle
Problem Phenomenon
Detergent bottle stress cracks and leaks
Cause Analysis
Surfactants in detergent induce environmental stress cracking of HDPE; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based solely on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
Select high-ESCR grades; design the bottle structure to reduce stress; verify compatibility by immersion; 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
Detergent bottles are selected and verified 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 reference for troubleshooting similar problems in the future
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