Extrusion & Post
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Filament breakage in PP nonwoven spinning
Problem Phenomenon
The filament breakage rate is high in spunbond nonwoven production, and merged filaments and hard filaments appear on the fabric surface.
Cause Analysis
Melt temperature fluctuation or spinning pack clogging makes filament output uneven; unstable cooling air also causes filament breakage or sticking.; during on-site investigation, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solution
①Stabilize the spinning temperature; ②regularly replace the spinning pack; ③stabilize the cooling air speed and temperature; ④strengthen filtration to reduce impurities.; after adjustment, continuously sample and verify the effect, and resume mass production after confirming stability
Key Takeaway
Spinning stability relies on the triple guarantee of temperature, pack, and cooling; filament breakage rate monitoring is the core indicator of the production line.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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