公开(公告)号：US20220127755A1

公开(公告)日：2022-04-28

申请号：US17428136

申请日：2020-02-07

Applicant: Spiber Inc.

Inventor： Hirotada Ando ,  Hideto Ishii ,  Koichi Kotaka ,  Ryoko Sato ,  Hiroshi Kano ,  Jun Kobayashi ,  Akito Sato ,  Yunosuke Abe

IPC: D01D5/06 ,  C07K14/435 ,  D01F4/02

Abstract: An object of the present invention is to provide a method for producing an artificial structural protein fiber having a small diameter and having a stress equal to or higher than that of the related art. A method for producing an artificial structural protein fiber according to the present invention is a method for producing an artificial structural protein fiber by a wet spinning method, the method including a coagulation step of discharging a spinning dope containing an artificial structural protein and an organic solvent from a spinneret into a coagulation liquid to coagulate the artificial structural protein, wherein a bath draft in the coagulation step is more than 0.4 and 20 or less.