PROBLEM TO BE SOLVED: To provide a production method of an absorbent article using an inspection method for accurately inspecting whether or not a lump exists in an absorber.SOLUTION: A production method of the invention is a production method of an absorbent article 22 including a step for inspecting whether or not a lump 81 exists in an absorber 11 being transported, in which the inspection step comprises: a step for projecting light to a surface of the absorber 11 a step for receiving the light which is transmitted through the absorber 11 a step for deriving a light reception amount based on the received light and a step for determining that the lamp 81 exists in the absorber 11 when the derived light reception amount is lower than the prescribed threshold.SELECTED DRAWING: Figure 1【課題】吸収体に塊が内在するか否かを精度良く検査する検査方法を用いた吸収性物品の製造方法を提供する。【解決手段】本発明の製造方法は、搬送中の吸収体11に塊81が内在するか否かを検査する工程を含む吸収性物品22の製造方法であって、前記検査する工程は、前記吸収体11の表面に向けて光を投光する工程と、前記吸収体11内を透過した前記光を受光する工程と、前記受光された光に基づいて受光量を導出する工程と、前記導出された受光量が所定の閾値を下回った場合、前記吸収体11に前記塊81が内在していると決定する工程と、を含む。【選択図】図1
