| 摘要 |
PROBLEM TO BE SOLVED: To provide a fiber sheet not only having excellent various properties such as electric insulation properties, separation properties, liquid-holding properties, wiping-out properties and concealing properties, but also having excellent strength. SOLUTION: The fiber sheet includes a whole aromatic polyamide fiber and a polyester resin wherein two or more melting peaks are drawn on a DSC curve drawn by the measurement of the polyester resin by differential scanning calorimetry. Preferably at least one melting peak is drawn at a temperature higher than the melting point originally possessed by the polyester resin, and at least one melting peak is drawn at a temperature lower than the melting point originally possessed by the polyester resin. The fiber sheet is suitably used as a separator for an electric double layer capacitor. COPYRIGHT: (C)2008,JPO&INPIT
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