03.06.12
An absorbent article comprising, in integral formation, at least, a rectangular liquid permeable top sheet, an absorbent element including an absorbent covered with a crepe paper, a rectangular water vapor permeable waterproof sheet, and a rectangular liquid impermeable back sheet has been patened by Daio Paper.
The absorbent article further comprising: on a first portion of the water vapor pe meable waterproof sheet, a water content indicator coating layer provided between the water vapor permeable waterproof sheet and the absorbent element, the water content indicator coating layer comprising a hydrophilic resin coating layer and a layer of an information mark provided on an inner surface of the hydrophilic resin coating layer, and wherein a permeability of the first portion of the water vapor permeable waterproof sheet and the hydrophilic resin coating layer is lower than a permeability of a second portion of the water vapor permeable waterproof sheet on which the hydrophilic resin coating layer is not provided on the water vapor permeable waterproof sheet.
The absorbent article further comprising: on a first portion of the water vapor pe meable waterproof sheet, a water content indicator coating layer provided between the water vapor permeable waterproof sheet and the absorbent element, the water content indicator coating layer comprising a hydrophilic resin coating layer and a layer of an information mark provided on an inner surface of the hydrophilic resin coating layer, and wherein a permeability of the first portion of the water vapor permeable waterproof sheet and the hydrophilic resin coating layer is lower than a permeability of a second portion of the water vapor permeable waterproof sheet on which the hydrophilic resin coating layer is not provided on the water vapor permeable waterproof sheet.