Nippon Kodoshi Corporation

Yoshitada Hayashi

Masahiko Ueta

Yoshiyo Kubo

A thin separator paper is provided for separating a positive electrode active material and a negative electrode active material from one another in alkaline battery. The separator paper has high gas tightness, high shortage preventing effect, and low deterioration. The separator paper possesses a crystalline structure in which celluloseand cellulosecoexist. A ratio of the celluloseis controlled in relation to the celluloseand the separator paper is made by using an alkali treated pulp beaten from CSF 50 ml to 0 ml, as a raw material. The separator paper has the thickness between 15 &#x3bc;m and 60 &#x3bc;m, the gas tightness between 10 minutes/100 ml and 800 minutes/100 ml, and the area shrinkage rate which is not greater than 2%. Also provided is an alkaline battery containing the separator paper.

Growing community of inventors

Kochi-ken, Japan

Yoshitada Hayashi