An absorbent sheet manufacturing apparatus has a cylinder part having a plurality of concave portions arranged in a circumferential direction, a particle filling part which is located above the cylinder part and which stores particles of high-absorbent resin, to sequentially fill the plurality of concave portions with particles by a particle filling opening in its lower end, and a communication part which is located adjacent to the particle filling opening. A concave portion facing a posterior edge of the particle filling opening is brought into communication with external space through the communication part. Therefore, when particles are filled into the concave portion from the particle filling part, air in the concave portion is forced out by particles entering the concave portion and is easily discharged to the external space through the communication part. As a result, it is possible to increase a density of particles filled in the concave portion.吸收片製造裝置包括:大致圓筒狀的缸部(21),係具有在圓周方向所排列的複數個凹部(212);粒子填充部(23),係在缸部(21)的上方收容高吸收性樹脂的粒子,而且經由下端的粒子填充口(232)將粒子填充缸部(21)之複數個凹部(212);及連通部(26),係配置成與粒子填充口(232)相鄰。連通部(26)使在粒子填充口(232)的後緣與粒子填充口(232)相對向的凹部(212a)和外部空間連通。藉此,在從粒子填充部(23)對凹部(212a)填充粒子時,凹部(212a)內的空氣被流入凹部(212a)的粒子推出,再經由連通部(26)易於向外部空間排出。結果,可使填充於凹部(212a)之粒子的密度增加。21‧‧‧缸部23‧‧‧粒子填充部26‧‧‧連通部210‧‧‧粒子供給區域211‧‧‧外側面212‧‧‧凹部212a‧‧‧凹部221‧‧‧第1蓋部222‧‧‧第2蓋部231‧‧‧粒子槽232‧‧‧粒子填充口261‧‧‧第1端部262‧‧‧第2端部263‧‧‧配管264‧‧‧吸引部265‧‧‧端部側面R1‧‧‧轉軸A1‧‧‧開始排出位置
