A composite sheet production method that produces 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: transporting the low-stretchability sheet along a transport route discharging ink droplets toward the low-stretchability sheet that is transported along the transport route and printing an image on the surface of the low-stretchability sheet at a prescribed location on the transport route and, while the elastic sheet is transported in a stretched state, joining the elastic sheet to the low-stretchability sheet at a location that is further downstream in the transport direction on the transport route than the prescribed location.本發明的複合薄片製造方法具有: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製造方法,具有:沿著搬運路徑搬運上述低伸長性薄片的步驟;朝著沿上述搬運路徑所搬運之上述低伸長性薄片噴出油墨滴,並在上述搬運路徑的預定位置,對上述低伸長性薄片的表面印刷圖像的步驟;及以伸長狀態一邊搬運上述伸縮性薄片,並在比上述搬運路徑的上述預定位置之搬運方向下游側的位置,將上述伸縮性薄片接合於上述低伸長性薄片的步驟。7a‧‧‧外包裝薄片的連續薄片(外包裝薄片、基材薄片)8a‧‧‧伸縮性薄片的連續薄片(伸縮性連續薄片)9a‧‧‧低伸長性薄片的連續薄片(低伸長性連續薄片)10‧‧‧印刷部11‧‧‧搬運機構11R‧‧‧搬運輥15‧‧‧印刷裝置20‧‧‧接合部21‧‧‧伸縮性連續薄片8a的搬運機構21R‧‧‧夾輥22‧‧‧低伸長性連續薄片9a的搬運機構22R‧‧‧搬運輥25‧‧‧超音波熔敷裝置25h‧‧‧發聲器25a‧‧‧鑽輥CV‧‧‧搬運機構
