Method for producing separator roll and device for producing separator roll
AssigneeSumitomo Chemical Company, Limited
InventorsKiyomu Nomura, Tatsuya Kataoka
Life of this patent
Estimating the term…
Abstract
A wrinkle or misaligned winding caused in a separator roll is inhibited. In a slitting apparatus (6), a conveying direction of a first separator (12a) is changed to a first take-up roller (70U) side by a direction changing roller (68), the first separator is conveyed via a take-up assisting roller (69) which is provided between the direction changing roller and a first touch roller (81U) 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.
Claims9
A method for producing a separator roll, said method comprising the steps of:
- (a) slitting an original sheet of a lithium ion secondary battery separator in a lengthwise direction so as to divide the original sheet into at least a first separator and a second separator;
- (b) separating, at a predetermined position, a convey route of the first separator and the second separator into a first route and a second route;
- (c) changing a conveying direction of the first separator by a first direction changing roller located lower than the predetermined position, and changing a conveying direction of the second separator by a second direction changing roller located lower than the predetermined position;
- (d) conveying the first separator, whose conveying direction has been changed, toward a first take-up section via a first take-up assisting roller which is located higher than the first direction changing roller, and conveying the second separator, whose conveying direction has been changed, toward a second take-up section via a second take-up assisting roller which is located higher than the second direction changing roller;
- and
- (e) taking up the first separator and the second separator by rotation of the first take-up section and rotation of the second take-up section, respectively, the second take-up section being located lower than the first take-up section.
A device for producing a separator roll, said device comprising:
- a cutting device configured to slit an original sheet of a lithium ion secondary battery separator in a lengthwise direction so as to divide the original sheet into at least a first separator and a second separator;
- a separating roller at which a convey route of the first separator and the second separator is separated into a first convey route and a second convey route;
- a first direction changing roller that is located lower than the separating roller and that is configured to change a conveying direction of the first separator;
- a second direction changing roller that is located lower than the separating roller and that is configured to change a conveying direction of the second separator;
- a first take-up assisting roller that is located higher than the first direction changing roller and that is configured to convey the first separator to a first take-up position;
- a second take-up assisting roller that is located higher than the second direction changing roller and that is configured to convey the second separator to a second take-up position;
- a first take-up section configured to take up the first separator by rotating;
- and
- a second take-up section that is located lower than the first take-up section and that is configured to take up the second separator by rotating.
Dependencies are inferred from the claim text.