Kuraray Co., Ltd.

Tomoki Sakai

Hiroyuki Kawai

Tomohiro Hayakawa

Masashi Nishida

Takashi Katayama

Toshimichi Kusunoki

Tsugumi Yoshida

A metal-covered liquid crystal polyester multifilament, comprising: two or more metal-covered liquid crystal polyester monofilaments in which a surface of each liquid crystal polyester monofilament is covered with a metal having a thickness of 0.1 to 20 μm, wherein in a cross-sectional photograph measured by X-ray CT, a percentage of a number of stuck fibers in which the two or more metal-covered liquid crystal polyester monofilaments are stuck is 75% or less with respect to a total number of fibers.

Metal-covered liquid crystal polyester multifilament

To provide a separator which has a combination of a preferable air permeability enabling high prevention of internal short circuit and a high retention rate of such an air permeability in an electrolytic solution, and has more improved uniformity of the air permeability. A separator comprising a porous sheet and cellulose nanofibers, wherein the porous sheet comprises a binder component having the SP value of 11 to 16 (cal/cm), and the porous sheet has the cellulose nanofibers at the inside and on the surface thereof, and wherein the cellulose nanofibers are combined with the porous sheet by fusion of the binder component.

Separator, and separator for alkaline manganese dry battery comprising same

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Okayama, Japan

Tomoki Sakai