WET NONWOVEN FABRIC, METHOD FOR MANUFACTURING WET NONWOVEN FABRIC, SEPARATOR FOR ELECTRIC DOUBLELAYER CAPACITOR, SEPARATOR FOR LITHIUM ION SECONDARY CELL, ELECTRIC DOUBLE LAYER CAPACITOR, AND LITHIUM ION SECONDARY CELL

摘要

PPROBLEM TO BE SOLVED: To provide wet nonwoven fabric having good ion permeability, good gas permeability, good liquid permeability or the like, to provide its manufacturing method, and to provide a separator, an electric doublelayer capacitor and a lithium ion secondary cell using the wet nonwoven fabric. PSOLUTION: In the nonwoven fabric, wholly aromatic polyamide fibers having fibrils are fixed at their fiber intersections by a polyester resin which has been flocculated in an non-fibrous state. The wet nonwoven fabric may be manufactured by irradiating wet fiber web consisting of the wholly aromatic polyamide fibers having fibrils and polyester resin fibers with infrared rays under nonpressure conditions. The separator comprises the wet nonwoven fabric. Each of the electric doublelayer capacitor and the lithium ion secondary cell comprises the wet nonwoven fabric as a separator. PCOPYRIGHT: (C)2005,JPO&NCIPI