Charged nonwoven material
AssigneeNorth Carolina State University
InventorBehnam Pourdeyhimi
Life of this patent
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Abstract
The disclosure relates to nonwoven fabric including a nonwoven material having a first surface and an opposing second surface, wherein the first surface has a first average surface charge and the second surface has a second average surface charge, the first average surface charge being different from the second average surface charge, wherein the nonwoven material includes a first plurality of fibers including a first polymer and a second plurality of fibers including a second polymer different from the first polymer. A method for imparting surface charge to a nonwoven N61824_1570Wabric is also provided.
Claims16
A nonwoven fabric comprising a nonwoven material having a first surface and an opposing second surface, wherein the first surface has a first average surface charge and the second surface has a second average surface charge, the first average surface charge being different from the second average surface charge, wherein the nonwoven material comprises a first plurality of fibers comprising a first polymer and a second plurality of fibers comprising a second polymer different from the first polymer.
A method for imparting surface charge to a nonwoven fabric, comprising;
- extruding continuous filament fibers through a spinneret, at least some of the continuous filament fibers comprising a first polymer and at least some of the continuous filament fibers comprising a second polymer different from the first polymer;
- collecting the extruded continuous filament fibers on a collection surface;
- mechanically entangling the collected continuous filament fibers to produce a nonwoven fabric having a first surface and an opposing second surface, wherein the first surface has a first average surface charge and the second surface has a second average surface charge, the first average surface charge being different from the second average surface charge.
Dependencies are inferred from the claim text.