Abstract: A non-woven fabric and a battery separator which have good handleability, high tensile strength and a thin thickness. The non-woven fabric is composed of a composite fiber of a core-sheath structure consisting of a core part and a sheath part covering the core part, wherein the core part of the composite fiber is formed of a first polyolefin-based resin, the sheath part of the composite fiber is formed of a second polyolefin-based resin having a melting point lower than that of the first polyolefin-based resin, a plurality of composite fibers are integrated by fusion-bonding the sheath parts each other, and the non-woven fabric has a basis weight of 3 g/m2 or more and an amount of strain, S, of 50 mm2 or less as calculated by a following formula (I) S (mm2)=(MD1?MD0)×(CD0?CD1)??(I).

Abstract: A woven fabric made by using fiber-reinforced thermoplastic resin strands produced by stretching a bundle of sheath-core type conjugated filaments at a temperature of the melting point of the sheath component or above but below the melting point of the core component while fusing the sheath component, wherein the sheath-core type conjugated fiber is a nontwist straight one whose sheath component has a melting point lower than that of the core component by 20° C. or above; and articles made by using the fabric.