Title:
DISPOSABLE DIAPER
Document Type and Number:
WIPO Patent Application WO/2011/065026
Kind Code:
A1
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.
Inventors:
OKU TOMOMI (JP)
SAKAGUCHI SATORU (JP)
MATSUSHIMA HIDEKI (JP)
SAKAGUCHI SATORU (JP)
MATSUSHIMA HIDEKI (JP)
Application Number:
PCT/JP2010/006984
Publication Date:
June 03, 2011
Filing Date:
November 30, 2010
Export Citation:
Assignee:
UNICHARM CORP (JP)
OKU TOMOMI (JP)
SAKAGUCHI SATORU (JP)
MATSUSHIMA HIDEKI (JP)
OKU TOMOMI (JP)
SAKAGUCHI SATORU (JP)
MATSUSHIMA HIDEKI (JP)
International Classes:
A61F13/42; A61F13/15; A61F13/49; A61F13/514; A61F13/53
Foreign References:
| JP2001112815A | 2001-04-24 | |||
| JP2004222868A | 2004-08-12 | |||
| JP2005514110A | 2005-05-19 | |||
| JPH06190002A | 1994-07-12 | |||
| JPH10137291A | 1998-05-26 | |||
| JP2005046263A | 2005-02-24 | |||
| JP2011030613A | 2011-02-17 |
Other References:
See also references of EP 2506816A4
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (2-8 Toranomon 1-chome, Minato-k, Tokyo 01, JP)
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