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.

Date of Patent:
Nov. 03, 2015

Filed:

Aug. 27, 2010
Applicants:

Satoshi Nozaki, Kanonji, JP;

Tsutomu Shirai, Kanonji, JP;

Toshiyuki Tanio, Kanonji, JP;

Kiyoko Nishimura, Kanonji, JP;

Inventors:

Satoshi Nozaki, Kanonji, JP;

Tsutomu Shirai, Kanonji, JP;

Toshiyuki Tanio, Kanonji, JP;

Kiyoko Nishimura, Kanonji, JP;

Assignee:

UNICHARM CORPORATION, Shikokuchuo-shi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F 13/15 (2006.01); A61F 13/84 (2006.01); A61F 13/534 (2006.01); A61F 13/53 (2006.01);
U.S. Cl.
CPC ...
A61F 13/84 (2013.01); A61F 13/534 (2013.01); A61F 2013/530532 (2013.01);
Abstract

It is an object of the invention to provide an absorbent article that is resistant to twisting and flattening, and that is superior in terms of fluid absorption rate, fluid diffusibility, absorbed fluid retention volume and fluid retention. The absorbent article comprises a top sheet on the skin contact side, a back sheet on the non-skin contact side, and an absorbent body situated between the two sheets, wherein the absorbent body comprises a bulky absorbent sheet, and the bulky absorbent sheet comprises heat-expanding particles that are dispersed in the bulky absorbent sheet and have been expanded by heat.


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