NONWOVEN MATERIAL Russian patent published in 2016 - IPC D04H1/46 

FIELD: treatment plants.

SUBSTANCE: nonwoven material consisting of layers fixed by needling, one of which is made of anion exchanger modified capron fibre and the second layer is made of a mixture of megalon hydrophilic modified capron fibre and viscose fibre with the latter content in the mixture of (20-40)%, the layers weight ratio is 1:(0.2-0.6), wherein the layers are fixed by needling to form pile loops on the surface, and the size of each loop varies from 2 mm along the inner surface of the loop to (8-12) mm along the outer surface of the loop.

EFFECT: technical result is improved protective properties of respirators filtering elements.

1 cl, 1 dwg, 1 tbl, 5 ex