公开(公告)号：US11761147B2

公开(公告)日：2023-09-19

申请号：US17254493

申请日：2019-07-12

Applicant: ENEOS CORPORATION

Inventor： Toshikazu Kiyohara ,  Yuji Nishimura

IPC: D06J1/08 ,  D04H3/00 ,  D06J1/10

CPC classification number: D06J1/08 ,  D04H3/00 ,  D06J1/10

Abstract: A creasing method includes: a gripping and rotating step of bunching and gripping a continuously drawn long fiber non-woven fabric and rotating the gripped part so that the long fiber non-woven fabric is twisted and a first folding line is formed; a heating step of heating the twisted long fiber non-woven fabric to fix the first folding line; and a widening step of releasing the long fiber non-woven fabric having the first folding line formed thereon.