公开(公告)号：EP2532782B1

公开(公告)日：2018-06-20

申请号：EP11737219.3

申请日：2011-02-01

申请人： Oji Holdings Corporation

发明人： FUJIWARA Tsuyoshi ,  OGITA Naohide ,  KAWAMUKAI Takashi

IPC分类号： D21H11/18 ,  C08J5/04 ,  D21F1/10 ,  B01D39/18 ,  B01D67/00 ,  B01D69/10 ,  B01D71/10 ,  B01D39/16 ,  D21C9/06 ,  D21H15/02

CPC分类号： D21C9/06 ,  B01D39/1607 ,  B01D39/18 ,  B01D67/0004 ,  B01D69/10 ,  B01D71/10 ,  B01D2239/0613 ,  B01D2239/0618 ,  B01D2239/10 ,  B01D2323/42 ,  D21H11/18 ,  D21H15/02 ,  Y10T428/249921 ,  Y10T428/298

摘要： The present invention relates to a method of producing a cellulose-fiber flat structure, the method including obtaining a cellulose-fiber flat structure by filtering a fine cellulose-fiber dispersion containing fine cellulose fibers having an average fiber diameter of 4 to 100 nm, using a filter material having a water permeability of not more than 100 ml/m 2 ·s and an initial tensile modulus of 20 MPa or greater. The present invention is able to produce a cellulose-fiber flat structure by efficiently recovering fine cellulose fibers from a dispersion containing fine cellulose fibers having an average fiber diameter at the nano level. The method of producing a cellulose-fiber flat structure can also be applied to a continuous process.