Sumitomo Chemical Company, Limited

Masaya Kondo

Tatsuya Kataoka

Kiyomu Nomura

Satoshi Oohira

A good-quality slit separator having a small amount of fuzziness at a slit part thereof is to be obtained. The present invention includes: a step (S) of conveying an original sheet (S); and a step (S) of slitting the original sheet (S) by causing a plurality of slitting blades () to cut into the original sheet (S) such that tangent plane angles (&#x3b8;) in a tangent plane, on which a slitting position is in contact with the original sheet (S), are substantially identical with each other.

Method for producing slit separator and method for producing separator roll

A good-quality slit separator having a small amount of fuzziness at a slit part thereof is to be obtained. The present invention includes: a step (S) of conveying an original sheet (S); and a step (S) of slitting the original sheet (S) by causing a slitting blade () to cut into the original sheet (S) such that a d tangent plane angle (&#x3b8;) in a tangent plane, on which a slitting position is in contact with the original sheet (S), is in a range of not less than 3&#xb0; to not more than 35&#xb0;.

Growing community of inventors

Niihama, Japan

Masaya Kondo