PROBLEM TO BE SOLVED: To provide an absorber manufacturing method capable of highly efficiently manufacturing absorbers that include portions having a relatively high basis weight of fiber materials and portions having a relatively low basis weight of the fiber materials.SOLUTION: The absorber manufacturing apparatus according to the present invention includes: supplying a rotary drum 2 including accumulation recesses 22 formed on an outer peripheral surface, with fiber materials 31 in a scattered state and accumulating the fiber materials 31 in the accumulation recesses 22 by suction to acquire absorbers 3 with a predetermined shape. The absorber manufacturing method provides absorbers 3 including portions having a relatively high basis weight of the fiber materials 31 and portions having a relatively low basis weight of the fiber materials by periodically changing a supply amount of the fiber materials 31 per unit time according to a rotary movement period of the accumulation recesses.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】繊維材料の坪量が相対的に高い部分と繊維材料の坪量が相対的に低い部分とを有する吸収体を効率的に製造可能な吸収体の製造方法を提供すること。【解決手段】本発明の吸収体の製造方法は、外周面に集積用凹部22が形成された回転ドラム2に、繊維材料31を飛散状態にて供給し、該繊維材料31を集積用凹部22内に吸引により堆積させて所定形状の吸収体3を得る吸収体の製造方法であり、繊維材料3の単位時間当たりの供給量を、集積用凹部の回転移動周期に合わせて周期的に変化させることによって、繊維材料31の坪量が相対的に高い部分と繊維材料の坪量が相対的に低い部分とを有する吸収体3を得る。【選択図】図1