Nanofiber filter material and resperatory system and air filtering article
AssigneeL&C Protec, Inc. d/b/a Cocoon, Inc.
InventorsJohn Peter Lord, Crotty Leo, Vishal Bansal, Christopher Ferraro, Yit-Hong Tee
Life of this patent
Estimating the term…
Abstract
A nanofiber based multi-layer filtration material suitable for use in providing air filtration to a user's respiratory system may be provided. as an air filtration garment and/or other air filterina devices such as a face mask, mask and garments or the like. The laminate includes a one or more fabric layer adjacent to one or more nanofiber layers.
Claims30
A multi-layer laminate configured for forming a fabric filter for use in providing air filtration to a user's respiratory system, the multi-layer laminate comprising:
- a nanofiber filtration layer having a first side and a second side, wherein the nanofiber filtration layer has a basis weight of between 0.70 to 14.75 grams per m2, wherein the nanofiber filtration layer comprises fibers having a diameter of greater than 350 nm;
- and
- at least a first fabric layer, wherein the at least a first fabric layer is laminated to the first side of the nanofiber filtration layer and wherein the combination of the at least a first fabric layer laminated to said first side of the nanofiber filtration layer are configured for forming a fabric filter for use in providing air filtration to a user's respiratory system, and wherein the combination of the at least a first fabric layer laminated to said first side of the nanofiber filtration layer provides a particle removal efficiency of at least 75% for particles sized 0.3 microns and greater, an air permeability of at least 20 cfm and a Moisture Vapor Transmission Rating (MVTR) of at least 20,000 g/m2/day.
A multi-layer filter configured for forming a fabric filter for use in providing air filtration to a user's respiratory system, the multi-layer filter comprising:
- a first nanofiber filtration layer having a first planar surface and a second planar surface, wherein the first nanofiber filtration layer has a basis weight of between approximately 0.75 to 14.75 grams per m2, wherein the nanofiber filtration layer comprises fibers having a diameter of greater than 350 nm;
- and
- at least a first and a second fabric layers, each of said first and second fabric layers including a first planar surface and a second planar surface, wherein the first planar surface of said at least a first fabric layer is disposed proximate to the first planar surface of the first nanofiber filtration layer and wherein the first planar surface of said at least a second fabric layer is disposed proximate to the second planar surface of the first nanofiber filtration layer, and wherein said multi-layer filter comprising said first nanofiber filtration layer disposed between said first and second fabric layers is configured for forming a fabric filter for use in providing air filtration to a user's respiratory system, and wherein the combination of the at least a first and a second fabric layer disposed proximate to said first and second side of the nanofiber filtration layer provides a particle removal efficiency of at least 75% for particles sized 0.3 microns and greater, an air permeability of at least 20 cfm and a Moisture Vapor Transmission Rating (MVTR) of at. least 20,000 g,/m2.
Dependencies are inferred from the claim text.