Abstract:
PROBLEM TO BE SOLVED: To obtain an ultrafine composite fiber of a synthetic fiber and an ultrafine fiber are produced by electro-spinning without mixing a solvent into a supplied resin, and to provide a method for manufacturing such an ultrafine composite fiber and a fiber structure including such an ultrafine composite fiber. SOLUTION: An ultrafine composite fiber is a solid composite resin molded product 7 having two or more phases. In the composite resin molded product 7, a resin having a volume resistivity of 10 15 Ωcm or less is exposed on 30% or more of the surface of the composite resin molded product. The composite resin molded product is heated and fused in front of a supply electrode 21 and/or between the supply electrode 21 and a collecting electrode 24 and extended by electro-spinning, thereby producing the ultrafine composite fiber. It is preferable that the fiber components constituting the ultrafine composite fiber be in phase separation. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fiber having ion exchange property, a nonwoven fabric containing the fiber, having ion exchange property, free from the lowering of the nonwoven fabric strength, and having excellent air permeability, and a battery separator using the nonwoven fabric, and a battery and an ion exchange filter. SOLUTION: The fiber is obtained by coating the surface of a fiber having at least a polyolefin resin exposed to the fiber surface with a thermosetting resin, and the nonwoven fabric contains the fiber. The thermosetting resin has an ion exchange property and the resin is fixed on the fiber surface by curing the thermosetting resin. The battery separator is formed of the nonwoven fabric. The battery uses the battery separator. The ion exchange filer is formed of the nonwoven fabric. COPYRIGHT: (C)2009,JPO&INPIT