The nonwoven fabric of the present invention is a spunbonded nonwoven fabric comprising a single component fiber comprising a copolymerized polyester resin having a polyethylene glycol copolymerized by 5% by weight or more and 40% by weight or less of polyethylene glycol. It is characterized in that the ΔMR of the spunbonded nonwoven fabric is 0.5% or more and 15% or less.本發明之不織布係以單成分纖維所構成之紡黏不織布，該單成分纖維包含在聚酯系樹脂中共聚合有5重量%以上40重量%以下的聚乙二醇之共聚合聚酯系樹脂，其特徵在於前述紡黏不織布之ΔMR為0.5%以上15%以下。
