| abstract |
PROBLEM TO BE SOLVED: To provide a separator for a non-aqueous electrolyte battery having a small thickness, a well-balanced pore diameter and mechanical strength, and excellent winding properties, and a non-aqueous electrolyte battery excellent in load characteristics. . A non-aqueous electrolyte battery separator comprising a wet nonwoven fabric, wherein the main fibers constituting the nonwoven fabric are: A separator for a non-aqueous electrolyte battery, wherein the separator is a plate-like ultrafine fiber having at least two long sides parallel to each other, and a non-aqueous electrolyte battery including the separator. |