THIN-FILM SHEET INCLUDING CELLULOSE FINE-FIBER LAYER

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 improvem...

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Bibliographische Detailangaben
Hauptverfasser:	SAITO, Yamato, ONO, Hirofumi, TAKASU, Shuji
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE CHEMISTRY COMPOSITIONS BASED THEREON ELECTRICITY GENERAL PROCESSES OF COMPOUNDING IMPREGNATING OR COATING OF PAPER LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G WORKING-UP
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Beschreibung
Zusammenfassung:	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 sheet 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.