PROBLEM TO BE SOLVED: To provide an absorbent article improved in comfort when wearing more objectively, based on correspondence of a measured value based on a near-infrared ray spectrometry (NIRS), and the physical property of the absorbent article.SOLUTION: A disposable diaper 10 is such that the sum of the amplitude peak of a first prescribed number of a frequency spectrum obtained by executing Fourier transformation on waveform data in a temporal axis of a frictional resistance force occurring in an exactly opposite direction to a product longitudinal direction L by smoothing the surface of a top sheet 50 along the product longitudinal direction L, based on a prescribed measurement condition, is equal to or less than 0.025 gf s and a ratio of the sum of the amplitude peak of the second prescribed number of the frequency spectrum to the sum of the amplitude peak of the first prescribed number of the frequency spectrum is equal to or more than 20%.COPYRIGHT: (C)2015,JPO&INPIT【課題】近赤外線分光法(NIRS)に基づく測定値と、吸収性物品の物性とを対応付けに基づいて着用時の快適性をより客観的に向上させた吸収性物品を提供する。【解決手段】使い捨ておむつ10は、所定の測定条件に基づいて、トップシート50の表面を製品長手方向Lに沿って撫でることによって、製品長手方向Lと正反対の方向に発生する摩擦抵抗力の時間軸における波形データに対してフーリエ変換を実行することによって得られた周波数スペクトルの第1所定数の振幅ピークの和が0.025gf・s以下であり、かつ第1所定数の振幅ピークの和に対する周波数スペクトルの第2所定数の振幅ピークの和の割合が20%以上である。【選択図】図1
