Extrusion & Post
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Uneven fabric surface of PP nonwoven
Fenómeno do problema
The transverse deviation of the nonwoven basis weight is large, and cloud spots appear on the fabric surface.
Análise das causas
Uneven filament web laying or unstable drawing; transverse differences in die head filament output are directly reflected as fabric basis weight deviation.; during on-site investigation, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solução
①Optimize web laying uniformity; ②stabilize the drawing airflow; ③test the consistency of die head filament output; ④online basis weight detection feedback.; after adjustment, continuously sample and verify the effect, and resume mass production after confirming stability
Conclusão principal
Fabric surface uniformity is the core of spunbond quality; online basis weight detection closed loop is the configuration of modern production lines.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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