THIN-FILM SHEET INCLUDING CELLULOSE FINE-FIBER LAYER

Title:

THIN-FILM SHEET INCLUDING CELLULOSE FINE-FIBER LAYER

Document Type and Number:

WIPO Patent Application WO/2016/047764

Kind Code:

A1

Abstract:

　The present invention provides a thin-film sheet configured from a single layer or a plurality of layers less than or equal to three layers including at least a cellulose fine-fiber layer that includes regenerated cellulose fine fibers by 50 wt% or more, wherein the thin-film sheet achieves improvements in both thermal stability (thermal coefficient of linear expansion and retention of elasticity at high temperature) and sheet strength, and is characterized in that the requirements: (1) the specific surface area equivalent fiber diameter of fibers constituting the cellulose fine-fiber layer is 0.20-2.0 μm inclusive; (2) the air impermeability is 1-100,000 s/100 ml inclusive; and (3) the film thickness is 2-22 μm inclusive are satisfied. The present invention also provides a composite sheet, a composite prepreg sheet, a separator for power storage devices, etc., that include the thin-film sheet.

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Inventors:

ONO HIROFUMI (JP)
TAKASU SHUJI (JP)
SAITO YAMATO (JP)

Application Number:

PCT/JP2015/077146

Publication Date:

March 31, 2016

Filing Date:

September 25, 2015

Export Citation:

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Assignee:

ASAHI KASEI FIBERS CORP (JP)

International Classes:

D21H11/18; B32B29/00; C08J5/04; C08J5/24; D21H13/08; H01G9/02; H01G11/52; H01M50/443; H01M50/489; H01M50/491

Foreign References:

JP2010287697A	2010-12-24
JPH11168033A	1999-06-22
JP2012036529A	2012-02-23
JP2008186707A	2008-08-14
JP2010232202A	2010-10-14
JP2008106152A	2008-05-08
JP2000003834A	2000-01-07

Other References: