Slitting apparatus and method for producing separator roll
AssigneeSumitomo Chemical Company, Limited
InventorsKiyomu NOMURA, Tatsuya KATAOKA
Life of this patent
Estimating the term…
Abstract
A wrinkle caused in a separator roll is inhibited. A slitting apparatus (6) changes a conveying direction of a first separator (12a) by a direction changing roller (68) toward a first take-up roller (70U), and conveys the first separator via an assisting roller (69) 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.
Claims12
A slitting apparatus comprising:
- a slitting section for slitting an original sheet of a battery separator in a lengthwise direction so as to divide the original sheet into at least a first separator and a second separator;
- a first take-up section and a second take-up section for taking up the first separator and the second separator, respectively, the first take-up section and the second take-up section being arranged in a positional relation of above and below;
- at least one direction changing roller for changing conveying directions of the first separator and the second separator toward the first take-up section and the second take-up section, respectively;
- and
- a first take-up assisting roller 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, the first take-up assisting roller being a concave roller.
A method for producing a separator roll, said method comprising the steps of:
- (a) slitting an original sheet of a battery separator in a lengthwise direction so as to divide the original sheet into at least a first separator and a second separator;
- (b) changing conveying directions of the first separator and the second separator by at least one direction changing roller toward a first take-up section and a second take-up section, respectively;
- (c) taking up the first separator and the second separator by the first take-up section and the second take-up section, respectively, the first take-up section and the second take-up section being arranged in a positional relation of above and below;
- and
- (d) conveying the first separator via a first take-up 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, the first take-up assisting roller being a concave roller.
Dependencies are inferred from the claim text.