ELECTRODE SHEET MANUFACTURING METHOD
The present invention provides a method of manufacturing an electrode sheet including a compression step of causing a band-shaped electrode sheet provided with an active substance layer which is an active substance forming portion between at least a pair of rotating columnar compression rolls, and pressing and compressing the electrode sheet by the pair of compression rolls, and a cutting step of cutting the electrode sheet undergoing the compression step parallel to a longitudinal direction of the electrode sheet. When the width of the active substance layer is assumed as a first width, the compression step compresses the electrode sheet using the compression rolls having a second width equal to or less than the first width.
1 . A method of manufacturing an electrode sheet comprising:
a compression step of causing a band-shaped electrode sheet provided with an active substance layer which is an active substance forming portion between at least a pair of rotating columnar compression rolls, and pressing and compressing said electrode sheet through the pair of compression rolls; and
a cutting step of cutting said electrode sheet undergoing said compression step parallel to a longitudinal direction of said electrode sheet, wherein
said compression step compresses said electrode sheet using the compression rolls having a second width equal to or less than a first width, where the first width is the width of the active substance layer.
2 . The method of manufacturing an electrode sheet according to claim 1 , wherein
said compression step compresses said electrode sheet by the compression rolls having a fourth width equal to or less than a third width, where the third width is a width of said electrode sheet extended in a width direction perpendicular to a longitudinal direction of said electrode sheet when said band-shaped electrode sheet is compressed.
3 . The method of manufacturing an electrode sheet according to claim 1 , wherein
said cutting step cuts both ends in the width direction of said electrode sheet parallel to the longitudinal direction by leaving portions having a width equal to or less than the width of the compression rolls such that the ends in the width direction perpendicular to the longitudinal direction of said electrode sheet which are not compressed by the pair of compression rolls are removed.
4 . The method of manufacturing an electrode sheet according to claim 1 , wherein said electrode sheet comprises the active substance layers and the active substance non-formed portions alternately arranged in the longitudinal direction at a predetermined interval.
5 . The method of manufacturing an electrode sheet according to claim 2 , wherein
said cutting step cuts both ends in the width direction of said electrode sheet parallel to the longitudinal direction by leaving portions having a width equal to or less than the width of the compression rolls such that the ends in the width direction perpendicular to the longitudinal direction of said electrode sheet which are not compressed by the pair of compression rolls are removed.
6 . The method of manufacturing an electrode sheet according to claim 2 , wherein said electrode sheet comprises the active substance layers and the active substance non-formed portions alternately arranged in the longitudinal direction at a predetermined interval.
7 . The method of manufacturing an electrode sheet according to claim 3 , wherein said electrode sheet comprises the active substance layers and the active substance non-formed portions alternately arranged in the longitudinal direction at a predetermined interval.
8 . The method of manufacturing an electrode sheet according to claim 5 , wherein said electrode sheet comprises the active substance layers and the active substance non-formed portions alternately arranged in the longitudinal direction at a predetermined interval.