Excellent tactile initial hydrophilicity, durable hydrophilic, liquid diffusivity, liquid transpiration breathability, breathability, flexibility, resistance fuzz resistance, and elasticity, the present invention, a sanitary napkin is less sticky, panty liner, and it is an object of the invention to develop a suitable mixed fiber spunbonded non-woven fabric as the back sheet (or wrap) sheet wrapping topsheet of an absorbent article incontinence pads, disposable diapers and the like, the second sheet, an absorber, and formed by the hydrophilic treatment A mixed fiber spun bonded nonwoven fabric containing 10 to 90% by weight of the thermoplastic elastomer (B) long-fiber and 90 to 10% by weight of the thermoplastic resin (A) long fibers, Shin intensity ratio in one direction of maximum intensity [at least strength / maximum intensity] in at 20% elongation of the degree (maximum point elongation) is 40% or less, and mixed fiber span is characterized in that the range of 0.10~0.40g / cm 3 bulk density It is intended to provide a method of manufacturing the same and bonded non-woven fabric.本発明は、初期親水性、耐久親水性、液拡散性、液蒸散性、透湿性、通気性、柔軟性、耐毛羽立ち性、伸縮性及び触感に優れ、ベタツキが少ない生理用ナプキン、パンティライナー、失禁パッド、紙おむつ等の吸収性物品の表面シート、セカンドシート、吸収体を包むシート(コアラップ)あるいは裏面シートとして好適な混繊スパンボンド不織布を開発することを目的とする、親水化処理されてなる熱可塑性樹脂(A)長繊維90~10重量%と熱可塑性エラストマー(B)長繊維10~90重量%を含む混繊スパンボンド不織布であって、少なくとも一方向の強度比〔最大強度時の伸度(最大点伸度)の20%伸長時における強度/最大強度〕が40%以下、および、嵩密度が0.10~0.40g/cm3の範囲にあることを特徴とする混繊スパンボンド不織布およびその製造方法を提供するものである。
