| 摘要 |
Method and device for producing perforated nonwovens by hydrodynamic needling. A nonwoven with a basically clean hole structure on a drum with plastic elevations can be produced by energy-rich water jets. Depending on the thickness of the fibers used in the nonwoven, however, certain fibers can nevertheless be stretched transversely across a hole. In order to avoid or eliminate this, the perforated nonwoven is subjected to singeing flames after drying.
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