US 12,104,300 B2
Fiber article
Yoshitaka Ito, Tokyo (JP); Masaya Omura, Tokyo (JP); Junko Makino, Tokyo (JP); Satoshi Hara, Osaka (JP); and Hiroaki Shintani, Tokyo (JP)
Assigned to DAICEL CORPORATION, Osaka (JP); and DAIKIN INDUSTRIES, LTD., Osaka (JP)
Appl. No. 17/637,599
Filed by DAICEL CORPORATION, Osaka (JP); and DAIKIN INDUSTRIES, LTD., Osaka (JP)
PCT Filed Aug. 28, 2020, PCT No. PCT/JP2020/032653
§ 371(c)(1), (2) Date Feb. 23, 2022,
PCT Pub. No. WO2021/039980, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 2019-158826 (JP), filed on Aug. 30, 2019.
Prior Publication US 2022/0275546 A1, Sep. 1, 2022
Int. Cl. D04H 1/4382 (2012.01); B01D 39/16 (2006.01); D04H 1/4318 (2012.01)
CPC D04H 1/4382 (2013.01) [B01D 39/1623 (2013.01); D04H 1/4318 (2013.01); B01D 2239/0636 (2013.01); B01D 2239/0645 (2013.01); B01D 2239/1233 (2013.01); B01D 2239/1291 (2013.01); D10B 2505/04 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A fiber article, comprising:
a plurality of first fibers; and
a plurality of second fibers each having an outer diameter smaller than that of each of the first fibers, the second fibers being supported in a dispersed state by the first fibers,
wherein the first fibers consist of one of rayon, polypropylene, polyethylene terephthalate, polyethylene, or cellulose acetate, and the second fibers include at least one of polytetrafluoroethylene, polypropylene, polyethylene, or polyamide, where the first fibers consist of a material different from that of the second fibers,
a ratio D1/D2 of an outer diameter D1 of the first fiber to an outer diameter D2 of the second fiber is set to a value in a range of 15.0 or greater to 1666.7 or less,
the outer diameter D1 is set to a value in a range of 14.64 μm or greater to 50.0 μm or less, and
the outer diameter D2 is set to a value in a range of 30.0 nm or greater to 800 nm or less.