When the nonwoven fabric 1 m pertaining to the absorbent article passes between the first rotating body 55 and the second rotating body 51 rotating while opposing their outer peripheral surfaces, the thickness of the nonwoven fabric 1 m relative to the nonwoven fabric 1 m Through holes h, h ... are formed in the thickness direction. When the pin members 55 p, 55 p projectingly formed on the outer circumferential surface of the rotating first rotating body 55 are inserted into the holes 51 h, 51 h ... on the outer circumferential surface of the rotating second rotating body 51, A step of pushing the pin members 55p, 55p ... into the nonwoven fabric 1m to form the through holes h, h ..., and when the pin members 55p, 55p ... are inserted into the holes 51h, 51h ... And flowing a gas between the pin member 55 p and the hole 51 h.互いの外周面を対向させつつ回転する第1回転体55と第2回転体51との間を、吸収性物品に係る不織布1mが通過する際に、前記不織布1mに対して前記不織布1mの厚さ方向に貫通孔h,h…を形成する方法である。回転する前記第1回転体55の外周面に突出形成されたピン部材55p,55p…が、回転する前記第2回転体51の外周面の穴部51h,51h…に挿入される際に、前記ピン部材55p,55p…が前記不織布1mに押し込まれて前記貫通孔h,h…を形成する工程と、前記ピン部材55p,55p…が前記穴部51h,51h…に挿入される際に、前記ピン部材55pと前記穴部51hとの間に気体を流す工程と、を有する。
