FIBROUS MATERIAL AND CLEANING COLUMN Russian patent published in 2019 - IPC A61M1/36 

FIELD: manufacturing technology.

SUBSTANCE: invention represents fibrous material including mixes of fibers having multiple types of solid fibers having the same cross-section shape, wherein percentage of each of at least two of plurality of fiber types with respect to total mixture of fibers is not less than 5.0 %, and when from the given plurality of fiber types having a percentage ratio of not less than 5.0 %, the fibers having the largest and smallest surface area increasing coefficients given by formula (1) are respectively denoted fiber_(max) and fiber_(min), coefficient of increase in surface area of fiber_(min) reduced by 3.0 % or more compared to coefficient of increase in surface area of fiber_(max), and percentage ratios of fiber_(max) and fiber_(min) in relation to total set of fiber mixtures are not less than 30.0 % and not less than 8.0 %, respectively and fiber_(max) has (a) a surface area increase coefficient of at least 1.20, and is (b) a porous fiber with a micropore specific surface area of at least 5 m²/g. Coefficient of increasing surface area = (perimeter of fiber cross-section)/(perimeter of circle having same cross-section area as fiber cross-section) (1).

EFFECT: according to the present invention, a fibrous material formed from fibers can be proposed, which enable efficient absorption of substances to be removed in the fluid to be treated, and a purification column containing said fibers.

22 cl, 7 dwg, 5 tbl