Method for producing aramid paper

A method for producing aramid paper that involves performing a hot-pressing step of mixing short aramid fibers and aramid fibrids in a mass ratio of 60/40 to 10/90 and forming a sheet, sandwiching the sheet obtained between a pair of heating elements, and applying a pressure of at least 500 kg/cm2 a...

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Bibliographische Detailangaben
Hauptverfasser:	FUJIMORI, TATSUSHI, NARUSE, SHINJI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	IMPREGNATING OR COATING OF PAPER PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	A method for producing aramid paper that involves performing a hot-pressing step of mixing short aramid fibers and aramid fibrids in a mass ratio of 60/40 to 10/90 and forming a sheet, sandwiching the sheet obtained between a pair of heating elements, and applying a pressure of at least 500 kg/cm2 at least two times, wherein the hot-pressing step that is performed at least two times comprises a hot-pressing step (a) at a temperature exceeding the glass transition temperature of aramid and a hot-pressing step (b) performed thereafter at a temperature less than the glass transition temperature of aramid.