Containing water absortion power resin and the adhesive, the absorption formation which becomes being the water absorption sheet constituent which possesses the structure which keeps with the hydrophilic nonwoven fabrics 2 or more, the said absorption formation being split with by primary absorption formation and secondary absorption formation water penetration characteristic 20 - 90 by the water permeability substrate which is, resins content water absortion power possesses the structure which becomes, in the said absorption formation is 100 -2 1000g/m, the water absorption sheet constituent. The water absorption sheet constituent of this invention being the water absorption sheet constituent where the pulp quite is little, while guaranteeing basic performance as a water absorption sheet constituent at high level, plays the effect that thin-shaped conversion and gel blocking high and it is possible to achieve the evasion of the fluid leak.吸水性樹脂及び接着剤を含有してなる吸収層が2枚以上の親水性不織布により挟持された構造を有する吸水シート組成物であって、透水指数が20~90である透水性基質により、該吸収層が1次吸収層と2次吸収層とに分割されてなる構造を有し、該吸収層における吸水性樹脂の含有量が100~1000g/m2である、吸水シート組成物。本発明の吸水シート組成物は、パルプの極めて少ない吸水シート組成物であっても、吸水シート組成物としての基本的な性能を高いレベルで確保しつつ、薄型化とゲルブロッキング現象および液漏れの回避を達成することができるという効果を奏する。
