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Patents

Disposable Diaper Having Excellent Migration Speed and Satisfactory Feeling

U.S. Patent No. 9,237,974 B2

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By: Tara Olivo

Associate Editor at Nonwovens Industry, Rodman Media

Naoto Ohashi, Kanonji, Japan; and Toshiya Yago, Kanonji, Japan. Assigned to Uni-Charm Corporation, Ehime, Japan.
Filed: 9/26/11
Issued: 1/19/16
A disposable diaper comprising a liquid-permeable top sheet, a liquid-impermeable back sheet and an absorber between the top sheet and back sheet, and having a front body waist region, a crotch region and a back body waist region, wherein the top sheet is a nonwoven fabric having on the skin contact surface a plurality of ridges and a plurality of recesses extending in the lengthwise direction of the disposable diaper, and alternating in the widthwise direction perpendicular to the lengthwise direction, the top sheet has point-like compressed sections, formed by compressing the ridges and/or recesses on the front body waist region and/or the back body waist region, at a density in the range of 4.0-7.0/cm2, and zones of ridges are present in the front body waist region and/or the back body waist region, sandwiched by two point-like compressed sections, the ridges in those zones have different heights than the adjacent ridges at the same location in the lengthwise direction.

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