FILTERING ELEMENT AND METHOD OF ITS MANUFACTURE Russian patent published in 1995 - IPC

FIELD: cleaning of air, water, blood and other media. SUBSTANCE: filtering element has particles of sorbent held together by particles of polymer. Size of polymer particles is 0.15-0.7 of mean size of sorbent particles. Method of manufacture comes to mixing sorbent and polymer, pressing and thermal treatment of mixture. Apparent density of polymer is 0,07-0,15 g/cm³ and mean size of polymer particles is 0.2-1.0of mean size of sorbent particles. Apparent density of sorbent is 1 - 8 of apparent density of polymer, ratio of bulk volume of sorbent to bulk volume of polymer being (5-1):1. EFFECT: increased mechanical strength at high absorbing properties and low resistance to medium flow. 2 cl, 3 tbl