Drum for a production unit for a non-woven material, method for production of a non-woven material and non-woven material obtained thus
AssigneeRieter Perfojet
InventorFrédéric Noelle
Life of this patent
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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.
Claims11
A drum comprising a fixed cylindrical body with a perforated lateral surface surrounded by a holed roll driven in rotation relative to the axis of the cylindrical body, and means for creating a partial vacuum inside the body, characterized by a water-impermeable partition subdividing the interior of the body into first and second compartments delimited by the partition and respectively by a first and a second portion of the lateral surface, and both the first and second compartments being placed under partial vacuum by the means for creating a partial vacuum.
Dependencies are inferred from the claim text.