METHOD FOR PRODUCING CELLULOSE-FIBER FLAT STRUCTURE

Title:

METHOD FOR PRODUCING CELLULOSE-FIBER FLAT STRUCTURE

Document Type and Number:

WIPO Patent Application WO/2011/093510

Kind Code:

A1

Abstract:

Provided is a method for producing a cellulose-fiber flat structure, which includes obtaining a cellulose-fiber flat structure by filtering a very fine cellulose-fiber dispersion containing very fine cellulose fibers having an average fiber diameter of 4 to 100 nm, using a filter material having water permeability of 100 ml/m2·s or less and an initial tensile modulus of 20 MPa or greater. It is possible to produce a cellulose-fiber flat structure by efficiently recovering very fine cellulose fibers from the dispersion containing very fine cellulose fibers having an average fiber diameter on the nano level. The method for producing a cellulose-fiber flat structure can be applied to a continuous process.

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Inventors:

FUJIWARA TSUYOSHI (JP)
OGITA NAOHIDE (JP)
KAWAMUKAI TAKASHI (JP)

Application Number:

PCT/JP2011/052038

Publication Date:

August 04, 2011

Filing Date:

February 01, 2011

Export Citation:

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Assignee:

MITSUBISHI CHEM CORP (JP)
OJI PAPER CO (JP)
FUJIWARA TSUYOSHI (JP)
OGITA NAOHIDE (JP)
KAWAMUKAI TAKASHI (JP)

International Classes:

D21H11/18; C08J5/04; D21F1/10

Foreign References:

JP2009299043A	2009-12-24
JP2006316253A	2006-11-24
JP2006193858A	2006-07-27

Other References: