Articles comprising fibres and/or fibrids, fibres and fibrids and process for obtaining them

Abstract

The present invention relates to novel articles, especially non-woven articles comprising fibres and/or fibrids. It also relates to novel fibres and fibrids and to a process for obtaining these fibres and fibrids.

1 .- 19 . (canceled) 
     
     
         20 . A method of manufacturing a consolidated fiber-based article, the method comprising:
 (a) forming fibers and/or fibrids from a mixture of polymers comprising at least one thermostable polymer and (b) at least one thermoplastic polymer selected from polysulphides and polysulfones;   (b) forming an intermediate non-woven fiber-based web from at least said fibers and/or fibrids; and   (c) consolidating said intermediate web by thermal compression at a temperature above the glass transition temperature of said thermoplastic polymer.   
     
     
         21 . The method of  claim 20 , comprising:
 (a) forming fibers from a mixture of an aromatic polyamide-imide and a polyethersulphone;   (b) forming a non-woven intermediate fiber-based web from said fibers; and   (c) consolidating said intermediate web by thermal pressing at a temperature above the glass transition temperature of said polyethersulphone.   
     
     
         22 . The method of  claim 21 , wherein said consolidating comprises thermally compressing the intermediate article at a temperature between 200 and 350° C. at a pressure greater than or equal to 5 bar.