FIBER SHEET AND FIBER PRODUCT USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a fiber sheet that has high dimension stability against a temporal change and heat treatment, and is excellent in secondary processability in such a case where it is laminated and made into a composite material with an other material.SOLUTION: A fiber sheet can be obtained by spinning a poly vinylidene fluoride-based copolymer mainly containing vinylidene fluoride by an electrospinning method and collecting spun fibers. The fiber sheet is composed of fibers having an average fiber diameter of 20 nm or more and less than 1000 nm. The fiber sheet has a melting temperature of 155°C or greater and an amount of heat of fusion of 45 J/g or less in a DSC measurement.