[12] Patent
[11] Patent No.:GC0011509  
[45] Date of Publishing the Grant of the Patent: 30/Nov /2020                76/2020  
Number of the Decision to Grant the Patent:2020/175551
Date of the Decision to Grant the Patent:26/Nov/2020

[21] Application No.:GC 2010-17211

[22] Filing Date:30/11/2010

[30] Priority:

[33] State [32] Priority date [31] Priority No.

[72] Inventors:1- Tomomi OKU،2- Satoru SAKAGUCHI،3- Hideki MATSUSHIMA

[73] Owner: UNICHARM CORPORATION , 182. Shimobun, Kinsei-cho, Shikokuchuo-shi 799-0111 , Ehime , Japan

[74] Agent: Suleiman I. Al-Ammar Law Office





[56] Cited Documents:

-US 4 192 311 A (FELFOLDI JAMES J [US])11 March 1980
-JP 2001 112815 A (OJI PAPER CO)24 April 2001
-GB 2 452 260 A (DAVID SIMON RHYS [DE])4 March 2009
Examiner: PH. Mohammad S. AlMousa

[57] Abstract: On the back sheet 120 side, back-side recessed portions 135 recessed toward the top sheet 110 are provided in a surface of the absorber 130 of the disposable diaper 1. The back-side recessed portions 135 include multiple grooves 135a, 135b which are continuous in the longitudinal direction L of the absorber 130. The back-side recessed portions 135 is visible from an outside of the back sheet 120 in a state before the disposable diaper 1 is used, and when the absorber absorbs liquid, the depth D of the back-side recessed portions 135 is made smaller than that before the absorber absorbs liquid. When the hydrophilic fiber and the particulate SAP swells, and thereby the absorber 130 expands in at least the thickness direction thereof, the back-side recessed portions 135 seems to disappear from the outside.
No. of claims: 10     No. of figures: 12


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