Sumitomo Seika Chemicals Co., Ltd.

Kana Kudo

Junichi Takatori

Hideki Matsushita

Haruka Inaba

A water-absorbent sheet structure comprising a structure in which an absorbent layer containing a water-absorbent resin is sandwiched with a hydrophilic nonwoven fabric from an upper side and a lower side of the absorbent layer, characterized in that at least one side of the upper side and the lower side of the water-absorbent sheet structure is subjected to embossing, wherein a central region Wof a water-absorbent sheet structurealong a longitudinal direction of the structureis subjected to: wavy embossingcomprising one wavy embossing extending along the longitudinal direction, wherein the embossing comprises one or more discontinued segments of the embossing, and linear embossingin a direction from each of tipsof wavy forms formed by the wavy embossingtowards an edge portion contouring along the longitudinal direction of the water-absorbent sheet structure, and wherein a branched structure of embossing formed by the wavy embossingand the linear embossinghas an approximate Y-shape-form, and wherein the edge portion contouring along the longitudinal direction of the water-absorbent sheet structurecomprises non-embossing regions W, W' not subjected to embossing, extending along the longitudinal direction, and further wherein an area of the embossing provided on the water-absorbent sheet structureis from 2 to 25% of an entire area of the water-absorbent sheet structure; and an absorbent article comprising the water-absorbent sheet structure, sandwiched between a liquid-permeable sheet and a liquid-impermeable sheet. According to the present invention, some effects are exhibited that a water-absorbent sheet structure which has a fast permeation rate of a liquid and is less likely to cause liquid leakage can be provided by subjecting at least an upper side or a lower side of the water-absorbent sheet structure to a specified emboss shape even when the water-absorbent sheet structure contains very little amount of pulps.

Growing community of inventors

Himeji, Japan

Kana Kudo