Fabric material composite construction for use as a filter means

Abstract

A fabric material composite construction, for use as a filter means or media, characterized in that said construction comprises a combination of one or more nanofiber layers and a synthetic single-thread squarely knitted precision fabric.

1 - 11 . (canceled) 
     
     
         12 . An acoustical device having parts to be protected from magnetic and powder particles, comprising a composite filtering fabric material protecting said parts of said device from magnetic and powder particles, said composite and protective fabric material consisting of a woven or knitted fabric made of a synthetic thread and having square openings with a square opening size from 5 μm to 2000 μm and supporting one or more layers of nanofibers having a nanofiber diameter from 100 to 900 nm, said nanofibers being embedded in said woven or knitted fabric thereby forming with said woven or knitted fabric a cohesively bound single filtering means preventing particles having a particle size from 1 to 2 μm from passing through, said composite filtering and protecting fabric material having an acoustical impedance allowing sound waves to pass through said fabric material, said synthetic thread being selected from the group consisting of polyester, polyamide, polypropylene, polyphenylsulphide, PEEK, PVD and PTFE, organic fluorine polymers, PA 6, PA 6/12, polyaramide, PUR, PES, PVA, PVAC, PAN, PEO, PS, polythiophene electroconductive polymers, kitosan, keratine, collagen and peptide biopolymers, said filtering means having a filtering efficiency of 99% for particles having a particle size up to 2 μm, said nanofibers being plasma processed nanofibers thereby improving an adhesion of said nanofibers to said supporting fabric. 
     
     
         13 . The acoustical device according to  claim 12 , wherein said composite filtering fabric material further comprises an additional fabric material layer arranged on said nanofibers. 
     
     
         14 . The acoustical device according to  claim 12 , wherein said nanofibers are coated either on single side of said woven or knitted fabric or on both sides of said woven or knitted fabric. 
     
     
         15 . The acoustical device according to  claim 14 , wherein said nanofibers are coated on an adhesive material layer pre-applied to a face of said supporting woven or knitted fabric. 
     
     
         16 . A cellular phone having parts to be protected from magnetic and powder particles, comprising a composite filtering fabric material protecting said parts of said device from magnetic and powder particles, said composite and protective fabric material consisting of a woven or knitted fabric made of a synthetic thread and having square openings with a square opening size from 5 μm to 2000 μm and supporting one or more layers of nanofibers having a nanofiber diameter from 100 to 900 nm, said nanofibers being embedded in said woven or knitted fabric thereby forming with said woven or knitted fabric a cohesively bound single filtering means preventing particles having a particle size from 1 to 2 μm from passing through, said composite filtering and protecting fabric material having an acoustical impedance allowing sound waves to pass through said fabric material, said synthetic thread being selected from the group consisting of polyester, polyamide, polypropylene, polyphenylsulphide, PEEK, PVD and PTFE, organic fluorine polymers, PA 6, PA 6/12, polyaramide, PUR, PES, PVA, PVAC, PAN, PEO, PS, polythiophene electroconductive polymers, kitosan, keratine, collagen and peptide biopolymers, said filtering means having a filtering efficiency of 99% for particles having a particle size up to 2 μm, said nanofibers being plasma processed nanofibers thereby improving an adhesion of said nanofibers to said supporting fabric. 
     
     
         17 . The cellular phone according to  claim 16 , wherein said composite filtering fabric material further comprises an additional fabric material layer arranged on said nanofibers. 
     
     
         18 . The cellular phone according to  claim 16 , wherein said nanofibers are coated either on single side of said woven or knitted fabric or on both sides of said woven or knitted fabric. 
     
     
         19 . The cellular phone according to  claim 18 , wherein said nanofibers are coated on an adhesive material layer pre-applied to a face of said supporting woven or knitted fabric.