A production method for a composite sheet that is for an absorbent article and that includes an elastic sheet and a low-stretchability sheet that has lower stretchability than the elastic sheet. The method includes: preparing a low-stretchability sheet that is formed by mutually aligning in a prescribed direction a first section that is extended in the prescribed direction and a second section that is not extended as far as the first section； and fixing the elastic sheet to the low-stretchability sheet via a plurality of joined parts while the elastic sheet is stretched in an elastic direction, the elastic direction being arranged in the prescribed direction. With regard to the fixing, the plurality of joined parts are provided so as to be discontinuously distributed in both the elastic direction and a direction that intersects the elastic direction, and are provided such that at least one of each of a prescribed-direction central position of the first section and a prescribed-direction central position of the second section is included in an un-joined part that is positioned between joined parts that, from among the plurality of joined parts, are adjacent in the elastic direction.本發明的複合薄片的製造方法為具有：吸收性物品相關的伸縮性薄片，及伸長性比上述伸縮性薄片低的低伸長性薄片的複合薄片的製造方法。該方法具有：準備使得朝預定方向延伸的第1部份與較第1部份不延伸的第2部份在上述預定方向交互排列所形成的低伸長性薄片的步驟，及以在上述伸縮性薄片朝著伸縮方向伸長的狀態，使上述伸縮方向在上述預定方向一致並對上述低伸長性薄片透過複數接合部固定上述伸縮性薄片的步驟。上述固定步驟是將上述複數接合部朝著上述伸縮方向及與上述伸縮方向交叉的方向的兩方向呈非連續分散地設置，並設置上述接合部，使得在上述複數接合部之中位在與上述伸縮方向相鄰的接合部彼此之間的非接合部，分別至少包含有各一個上述第1部份的上述預定方向的中央位置與上述第2部份的上述預定方向的中央位置。
