Apparatus for making spunbonded nonwoven from continuous filaments

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United States of America Patent

PATENT NO 11001942
SERIAL NO

16423048

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Abstract

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An apparatus for making spunbonded nonwoven has a spinneret for emitting the continuous filaments in a filament-travel direction, a cooling chamber downstream in the direction from the spinneret and receiving the filaments, and two air-supply manifolds flanking the chamber for feeding cooling air thereinto transverse to the direction. A flow straightener for equalizing flow of the cooling air on the filaments is provided in at least one of the air-supply manifolds and has passage walls forming a plurality of flow passages that extend transversely to a filament-travel direction. A flow cross section of the flow straightener is greater than 85% (preferably more than 90%) of a cross-sectional size of the straightener, a ratio of a length L of the flow passages to an inner diameter Di of the flow passages L/Di is 1 to 15.

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Patent Owner(s)

Patent OwnerAddress
REIFENHAEUSER GMBH & CO KG MASCHINENFABRIKSPICHER STRASSE 46 TROISDORF D-53844

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Frey, Detlef Niederkassel, DE 43 266
Geus, Hans-Georg Niederkassel, DE 38 85
Neuenhofer, Martin Roesrath, DE 15 13
Nitschke, Michael Koenigswinter, DE 15 20
Tiedt, Tristan Cologne, DE 1 0

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