Sumitomo Chemical Company, Limited

Kiyomu Nomura

Tatsuya Kataoka

Koichiro Watanabe

Masaya Kondo

Satoshi Oohira

A wrinkle caused in a separator roll is inhibited. A slitting apparatus () changes a conveying direction of a first separator () by a direction changing roller () toward a first take-up roller (U), and conveys the first separator via an assisting roller () which is provided between a take-up position of the first separator to be wound and the direction changing roller so as to shorten a conveying distance between the take-up position and a roller immediately before the take-up position.

Slitting apparatus and method for producing separator roll

A wrinkle or misaligned winding caused in a separator roll is inhibited. In a slitting apparatus (), a conveying direction of a first separator () is changed to a first take-up roller (U) side by a direction changing roller (), the first separator is conveyed via a take-up assisting roller () which is provided between the direction changing roller and a first touch roller (U) so as to shorten a roller-to-roller distance to the first touch roller, and the first separator which is being wound is pressed onto a take-up surface by the first touch roller.

Method for producing separator roll and device 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 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

Provided is a method for producing a separator which method less causes a tear in the separator. The method is a method for producing a separator by slitting, in a direction in which a separator original sheet () being porous is conveyed, the separator original sheet () into a plurality of separators (), including the steps of: (a) conveying the separator original sheet () in a state where the separator original sheet () is in contact with a roller (); and (b) slitting the separator original sheet () at a portion where the separator original sheet () is in contact with the roller ().

Method for producing separator and method for slitting separator original sheet

Device and method for producing separator roll

Method for producing separator and method for slitting

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

Kiyomu Nomura