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:
Nov. 24, 2015
Filed:
Nov. 30, 2010
Tomomi Oku, Kagawa, JP;
Satoru Sakaguchi, Kagawa, JP;
Hideki Matsushima, Kagawa, JP;
UNICHARM CORPORATION, Ehime, JP;
Abstract
On the back sheet side, back-side recessed portions recessed toward the top sheet are provided in a surface of the absorber of the disposable diaper. The back-side recessed portions include multiple grooves, which are continuous in the longitudinal direction L of the absorber. The back-side recessed portions is visible from an outside of the back sheet in a state before the disposable diaper is used, and when the absorber absorbs liquid, the depth D of the back-side recessed portions is made smaller than that before the absorber absorbs liquid. When the hydrophilic fiber and the particulate SAP swells, and thereby the absorber expands in at least the thickness direction thereof, the back-side recessed portions seems to disappear from the outside.