Patent ID: 9192525
Filing Date: 2015-11-24
Classification: A61F

Abstract:
1. A disposable diaper, comprising: a liquid-permeable top sheet; a liquid-impermeable back sheet; and an absorber provided between the top sheet and the back sheet and configured to swell in at least a thickness direction by absorbing liquid, wherein a back-side recessed portion, recessed toward a top sheet side of the absorber, is formed in a surface of the absorber on a back sheet side thereof, a joint member is arranged on at least a part of a surface of the back-side recessed portion, the joint member joining the back sheet to the absorber in such a manner that the back sheet follows a shape of the back-side recessed portion, the back-side recessed portion is visible from an outside of the back sheet in a state before the disposable diaper is used, when the absorber absorbs liquid, a depth of the back-side recessed portion is smaller than before the absorber absorbs liquid, and the back-side recessed portion is continuous from one end of the absorber to the other end of the absorber in a longitudinal direction of the absorber.