SEPARATOR WINDING CORE, SEPARATOR WOUND BODY, AND METHOD OF MANUFACTURING SEPARATOR WOUND BODY

摘要

PROBLEM TO BE SOLVED: To achieve a separator winding core which has a large frictional force between side faces and which is less likely to collapse even when stacked.SOLUTION: There is provided a separator winding core, at least two of which can be stacked while side faces where a separator is not wound are in an up-and-down direction, at least one face of the side faces having an arithmetic average roughness of 0.16 μm or more.SELECTED DRAWING: Figure 6