Title:
SEPARATION FILM AND MANUFACTURING METHOD FOR THE SAME
Document Type and Number:
Japanese Patent JP2021186748
Kind Code:
A
Abstract:
To provide a separation film and the like which comprise high separation performance and permeation performance.SOLUTION: A separation film is primarily composed of cellulose ester and has a plurality of voids, where a ratio (a) of total areas of the voids whose virtual diameters are 1600-3000 nm to total areas of the voids, on a cross section which is parallel to a longitudinal direction of the film and parallel to a film thickness direction of the film, is 10-40%, and a ratio (b) of the total areas of voids whose virtual diameters are 400-1200 nm to the total areas of the voids is 10-50%, where respective variation coefficients of the (a) and the (b) are equal to 15% or less.SELECTED DRAWING: None
Inventors:
OTSUKA MARINA
HANAKAWA MASAYUKI
TAKADA KOICHI
SAKAEMURA HIROKI
HANAKAWA MASAYUKI
TAKADA KOICHI
SAKAEMURA HIROKI
Application Number:
JP2020094347A
Publication Date:
December 13, 2021
Filing Date:
May 29, 2020
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
B01D71/14; B01D69/00; B01D69/02; B01D69/08; D01F2/28
Previous Patent: JPWO2021186747
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