Drum for a production unit for a non-woven material, method for production of a non-woven material and non-woven material obtained thus
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United States of America Patent
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Mar 10, 2009
Grant Date -
Mar 20, 2008
app pub date -
Nov 27, 2007
filing date -
Apr 12, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A drum for processing nonwovens has a perforated lateral surface and an interior divided into first and second compartments, respectively associated with first and second lateral surface portions of the drum. A partial vacuum in each of the compartments aspirates and secures a tangentially-engaged nonwoven preform against the lateral surface of the drum for further processing. The drum may be incorporated in a production unit or installation including a spunbond tower for spinning filaments to form the nonwoven preform for tangential delivery to the drum. The resulting nonwoven may thereby be provided with uniform properties.
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