Patent #: 7,279,613
Inventor(s): Satoshi Nozaki, Wataru Yoshimasa, and Kazuya Nishitani
Company: Uni-Charm Corporation
Patented is a sanitary napkin comprising a backsheet, a liquid-permeable topsheet and an absorbent layer for absorbing a liquid. The absorbent layer is between the backsheet and the topsheet. At least a part of an absorbent layer region is adapted to act as a liquid-receiving region. The liquid-receiving region includes a raised region and a peripheral region laterally provided around the raised region. The raised region is continuously elongated in the longitudinal direction of the sanitary napkin. The raised region includes a front region for coming into contact with the vaginal opening of a wearer and a rear region for coming into contact with the buttocks of the wearer. The front region has a front hydrophilic material layer positioned between the liquid permeable topsheet and the absorbent layer. The rear region has a rear hydrophilic material layer positioned between the liquid permeable topsheet and the absorbent layer. The front hydrophilic material layer and the rear hydrophilic material layer cause the raised region to be higher than the peripheral region. A compressed groove surrounds the raised region. The compressed groove is recessed from the surface of the peripheral region to create a depression between the raised region and the peripheral region. The front region and the rear region are respectively depressed with a given pressure applied to the top surfaces of the front region and the rear region. An amount of depression of the top surface of the rear region in a direction orthogonal to the top surface of the rear region is larger than an amount of depression of the top surface of the front region in a direction orthogonal to the top surface of the front region.
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