The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2015
Filed:
Sep. 27, 2011
Hideki Matsushita, Himeji, JP;
Haruka Inaba, Maizuru, JP;
Kana Kudo, Himeji, JP;
Junichi Takatori, Himeji, JP;
Hideki Matsushita, Himeji, JP;
Haruka Inaba, Maizuru, JP;
Kana Kudo, Himeji, JP;
Junichi Takatori, Himeji, JP;
SUMITOMO SEIKA CHEMICALS CO., LTD., Kako-gun, JP;
Abstract
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.