Absorbent article with klemm gradient and water repellent finishing

An absorbent article sanitary napkin, comprising:

• a topsheet that forms a skin-facing surface;
• a backsheet that forms a non-skin-facing surface;
• an absorbent member that is interposed between the topsheet and the backsheet;
• the sanitary napkin contains a pair of wings longitudinally extending outward from a pair of lateral side edges of the absorbent member, wherein each of the wings includes a portion of the topsheet and the backsheet;
• and
• a target region that is disposed so as to face an excretory part of a wearer when the wearer wears the absorbent article sanitary napkin and that is located between the pair of lateral side edges of the absorbent member,
• wherein the target region is a region formed between one root and the other root of the wings in the longitudinal direction,
• wherein the absorbent member is a hydrophilic foam body made of a hydrophobic material subjected to hydrophilic treatment,
• a plurality of through holes penetrating the absorbent member in a thickness direction are formed at a portion of the absorbent member that is located in the target region,
• the absorbent member has a layer-stacked structure in which a plurality of layers are stacked in the thickness direction,
• a ratio of the Klemm water absorption height as measured according to JIS P8141, of a lower layer, which is most proximal to the backsheet, of the layer-stacked structure to that of an upper layer that is most proximal to the topsheet is 2.0 or more,
• the backsheet is formed of a moisture permeable film that includes a plurality of microvoids,
• water repellent finishing is performed on a portion, which is located in the target region, of a skin-facing surface of the moisture permeable film, so that water repellent portions are formed, and
• a ratio of the total area of portions on which the water repellent finishing is performed to the area of the target region is in the range of from 30% to 60%,
• wherein the absorbent member does not include an absorbent polymer;
• and
• wherein the upper and lower layers of the absorbent member are bonded to each other and the layers are inseparably integrated with each other.