US 12,084,798 B2
Apparatus and method for manufacturing fibrous web, fibrilla fiber aggregate, or nonwoven fabric, and fibrous web, fibrilla fiber aggregate, or nonwoven fabric manufactured thereby
Hye Sung Yoon, Yongin-si (KR); and Jin Su Kim, Yongin-si (KR)
Assigned to SAMYANG HOLDINGS CORPORATION, Seoul (KR)
Appl. No. 17/613,560
Filed by SAMYANG HOLDINGS CORPORATION, Seoul (KR)
PCT Filed Jun. 12, 2019, PCT No. PCT/KR2019/007068
§ 371(c)(1), (2) Date Nov. 23, 2021,
PCT Pub. No. WO2020/241960, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 10-2019-0061369 (KR), filed on May 24, 2019.
Prior Publication US 2022/0243373 A1, Aug. 4, 2022
Int. Cl. D04H 17/12 (2006.01); A61L 24/08 (2006.01); A61L 31/04 (2006.01); D04H 1/44 (2006.01); D04H 1/70 (2012.01)
CPC D04H 17/12 (2013.01) [A61L 24/08 (2013.01); A61L 31/042 (2013.01); D04H 1/44 (2013.01); D04H 1/70 (2013.01); D10B 2509/022 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for preparing fibrous web, fibrillar fiber aggregate or nonwoven fabric, the method comprising passing woven fabric starting material comprising oxidized regenerated cellulose through a machine to process into fibrous web, the machine comprising a feed roller; a cylinder equipped with a flat bar on a surface thereof; a doffer; and a stripper,
wherein teeth are formed on the surface of each of the feed roller, flat bar, cylinder, doffer and stripper, and
wherein the woven fabric is fed via the feed roller into the cylinder, passes between the flat bar and the cylinder, and then passes through the doffer and the stripper sequentially.