公开(公告)号：US12152325B2

公开(公告)日：2024-11-26

申请号：US17778859

申请日：2021-11-26

Applicant: Daicel Corporation

Inventor： Takuya Osaka ,  Hiroaki Shintani ,  Tatsuya Higashigaki ,  Chihiro Tanaka ,  Yuki Tsukamoto ,  Kazuhiro Yamashita

IPC: D04H1/72 ,  D04H1/4382

Abstract: A dry-laid nonwoven fabric production method may include: affixing resin particles including polymeric molecules to a plurality of first fibers; applying an external force to the plurality of first fibers to which the plurality of resin particles are affixed so as to reduce gaps between the first fibers; relieving the applied external force to form in gas, from the plurality of resin particles, second fibers each having an outer diameter smaller than that of the first fiber and the outer diameter of each of the second fibers have a value in a range from 30 nm to 1.0 μm; and forming a nonwoven fabric that is a fiber composite including the first fibers and the second fibers.