公开(公告)号：US20240376663A1

公开(公告)日：2024-11-14

申请号：US18293231

申请日：2022-08-04

Applicant: Daio Paper Corporation

Inventor： Ryunosuke Aoki ,  Ikko Matsusue ,  Naoto Umeguchi

IPC: D06M13/432

Abstract: A method for preparing carbamated cellulose fibers applicable to mass production is provided. The method for preparing carbamated cellulose fibers in which hydroxyl groups of cellulose fibers have partially or fully been modified with carbamate groups, includes heating a pulp sheet which has been formed into a strip shape by subjecting a raw material pulp to papermaking and contains urea or a derivative thereof, between a pair of rolls while passing therebetween, to cause the modification.