Multi-layer, fluid transmissive fiber structures containing nanofibers and a method of manufacturing such structures
AssigneeEssentra Porous Technologies Corp.
InventorsBennett C. Ward, Geoffrey M. Stoltz
Life of this patent
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Abstract
A multi-layer, fluid transmissive structure is provided that comprises first and second fiber layers each comprising a plurality of polymeric fibers bonded to each other at spaced apart contact points. The polymeric fibers of these fiber layers have diameters greater than one micron and collectively define interconnected interstitial spaces providing tortuous fluid flow paths through the first and second fiber layers. The structure also comprises a plurality of nanofibers disposed intermediate at least a portion of the first fiber layer and at least a portion of the second fiber layer.
Claims11
A method of manufacturing a multi-layer, fluid transmissive structure, the method comprising:
- providing a first fiber layer comprising a first plurality of polymeric fibers having diameters greater than one micron;
- disposing a web of nanofibers on the first fiber layer;
- positioning a second fiber layer over the web of nanofibers, the second fiber layer comprising a second plurality of polymeric fibers having diameters greater than one micron;
- and
- applying heat and pressure to adhere the second fiber layer to the first fiber layer.
Dependencies are inferred from the claim text.