Absorbent sheet composition having a structure which is sandwiched by (57) a hydrophilic non-woven two or more A (51), the absorption layer which comprises an adhesive and a water absorbing resin, the primary absorption the absorbent layer has a structure comprising two is a fraction (54) secondary absorbent layer (53) layer, 100~600μm, median particle size (1) water absorbent resin is used for (2) the primary absorbent layer 20 to 70 seconds saline absorption rate of the absorbent resin (52), 1 to 20 seconds saline absorption rate of (54) water-absorbent resin used in (3) secondary absorbent layer, and (4) (saline absorption rate of the water-absorbent resin used in the primary absorbent layer) - (saline absorption rate of the water-absorbent resin used in the second absorption layer) is 10 seconds or more, absorbent sheet composition. Even in very small water-absorbent sheet composition of the pulp, while ensuring a high level of basic performance as a water-absorbent sheet composition, water-absorbent sheet composition of the present invention, leakage of the gel blocking phenomenon and the thickness of It is advantageously possible to achieve the avoidance.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(57)により挟持された構造を有する吸水シート組成物(51)であって、該吸収層が1次吸収層(53)と2次吸収層(54)とに分画されてなる構造を有し、(1)吸水性樹脂の中位粒径が100~600μm、(2)1次吸収層に用いられる吸水性樹脂(52)の生理食塩水吸水速度が20~70秒間、(3)2次吸収層に用いられる吸水性樹脂(54)の生理食塩水吸水速度が1~20秒間、並びに(4)(1次吸収層に用いられる吸水性樹脂の生理食塩水吸水速度)-(2次吸収層に用いられる吸水性樹脂の生理食塩水吸水速度)が10秒間以上、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及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。
