Processing Machinery
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PET seat belt yarn
Problem Phenomenon
Automotive seat belt webbing fails the abrasion resistance test
Cause Analysis
Seat belt webbing is subjected to locking friction and long-term sun exposure, and has high requirements for abrasion and weather resistance indicators; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Select high-strength abrasion-resistant industrial yarn; add anti-UV finishing to webbing dyeing and finishing; verify according to automotive abrasion resistance and light aging; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Seat belt yarn is specially verified according to automotive abrasion and weather resistance; after confirming effectiveness, fix 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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