EXTERIOR MATERIAL, METHOD OF FORMING PATTERN ON EXTERIOR MATERIAL, AND METHOD OF MANUFACTURING BATTERY INCLUDING EXTERIOR MATERIAL

An exterior material to be used for a battery comprises at least one pattern part formed in a machine direction (MD) of the exterior material, wherein the MD of the exterior material is a width direction of a battery including the exterior material, and a transverse direction (TD) of the exterior material is a longitudinal direction of the battery including the exterior material.