FILTERING MATERIAL FOR AIR PURIFICATION AND METHOD FOR ITS PRODUCTION Russian patent published in 2009 - IPC B01D39/16 

FIELD: technological processes.

SUBSTANCE: group of inventions is related to production of sorbtion-filtering materials for purification of gases from organic and inorganic chemical substances. Filtering material contains at least two layers of base from nonwoven polymer fibrous material and particles of aluminium oxide hydrate fixed on fibres on one side of every layer surface, at that surfaces with fixed particles of aluminium oxide hydrate of two layers are folded towards each other, thus layer of aluminium oxide hydrate particles is created between mentioned layers of base, which has sorbtion properties. Material is produced by application of aluminium-based material particles on one side of nonwoven polymer fibrous material, subsequent folding of two such treated material cloths with treated surfaces towards each other and performance of hydrolysis with creation of layer of aluminium oxide hydrate particles between two cloths.

EFFECT: suggested filtering material has high sorbtion properties, high efficiency of air purification from contaminants of organic and inorganic origin and low aerodynamic resistance.

14 cl, 2 dwg, 2 tbl, 2 ex