A water-absorbent sheet constructs absorption layer which comprises a water-absorbent resin has a structure that is sandwiched from above and below the absorbent layer due to the hydrophilic nonwoven fabric, at least one of the upper and lower surfaces of the water absorbing sheet structure Embossing is applied to the surface, when the water absorbing sheet structure 1m 2 per 4L was (4L / m 2) absorption, both the following relationships (A) and (B), the following properties of [saline (However, water-absorbent sheet structure thickness of saline before absorption (mm), T2 water absorption sheet configuration of saline after absorbing water-absorbent sheet structure thickness of saline after absorption (mm), t2 is the T1 be met 2 or more thickness expansion ratio (A) (T2 / T1) is, embossed thickness in the body) is a (mm) (B) expansion embossing depth [(T2-t2) / T2], 0.7 or more. Absorbent sheet structure characterized by having a]. The excellent effect can be water-absorbent sheet structure according to the present invention does not cause the original shape after absorption and liquid absorption before, give full play to the absorption capacity of the leakage amount of liquids, such as permeability, less that yet excellent.吸水性樹脂を含有してなる吸収層が、親水性不織布により該吸収層の上方及び下方から挟持された構造を有する吸水シート構成体であって、該吸水シート構成体の上面及び下面の少なくとも1面にエンボスが施され、以下の特性〔生理食塩水を、該吸水シート構成体1m2あたり4L(4L/m2)吸収させた際に、次の関係(A)及び(B)の両方を満たすこと(ただし、T1は生理食塩水吸収前の吸水シート構成体厚み(mm)、T2は生理食塩水吸収後の吸水シート構成体厚み(mm)、t2は生理食塩水吸収後の吸水シート構成体におけるエンボス厚み(mm)である);(A)膨張厚み比(T2/T1)が、2以上;(B)膨張エンボス深さ[(T2-t2)/T2]が、0.7以上。〕を有することを特徴とする吸水シート構成体。本発明にかかる吸水シート構成体は液体吸収前や吸収後に型くずれを起こさず、しかも優れた液体浸透性、少ない液漏れ量等の吸収能力を十分に発揮することができるという優れた効果を奏する。
