Provided is a water-absorbent resin which is capable of giving an absorbent material improved gel-shape stability and which has excellent water-absorption capacity. A water-absorbent resin of the present invention is a polymer of a water-soluble ethylenically unsaturated monomer, and has the following properties (1) and (2): (1) A disintegration amount at 20-fold swelling is 30% by mass or less; and (2) a solubility in physiological saline is 25% by mass or less. (Determination Method for Disintegration Amount at 20-Fold Swelling) 5 g of the water-absorbent resin is added to 100 g of physiological saline to allow the water-absorbent resin to absorb the physiological saline, thereby obtaining a gel. The obtained gel is divided approximately equally into five portions, and these portions are introduced respectively into cylindrical molds having a length of 3.6 cm and a radius of 2.8 cm and molded. The masses of the five molded cylindrical gels are measured. The heaviest and the lightest of the five gels are removed, and the remaining three gels are used as samples. A mass Wa (g) of each sample is measured. Each weighed sample is placed on the uppermost sieve of a combination of JIS standard sieves having a mesh size of 5.6 mm and a receptacle in this order and shaken for 10 minutes using a Ro-Tap shaker (rotation speed, 290 rpm; number of taps, 165 rpm). A mass Wb (g) of the gel which has passed through the sieves is measured. The disintegration amount of each sample is calculated using the following equation: Disintegration amount of sample (%)=Wb (g)/Wa (g)×100. An average of the disintegration amounts for three samples to be measured is regarded as the disintegration amount at 20-fold swelling of the water-absorbent resin.

Provided is a water-absorbent resin which is capable of giving an absorbent material improved gel-shape stability and which has excellent water-absorption capacity. A water-absorbent resin of the present invention is a polymer of a water-soluble ethylenically unsaturated monomer, and has the following properties (1) and (2): (1) A disintegration amount at 20-fold swelling is 30% by mass or less; and (2) a solubility in physiological saline is 25% by mass or less. (Determination Method for Disintegration Amount at 20-Fold Swelling) 5 g of the water-absorbent resin is added to 100 g of physiological saline to allow the water-absorbent resin to absorb the physiological saline, thereby obtaining a gel. The obtained gel is divided approximately equally into five portions, and these portions are introduced respectively into cylindrical molds having a length of 3.6 cm and a radius of 2.8 cm and molded. The masses of the five molded cylindrical gels are measured. The heaviest and the lightest of the five gels are removed, and the remaining three gels are used as samples. A mass Wa (g) of each sample is measured. Each weighed sample is placed on the uppermost sieve of a combination of JIS standard sieves having a mesh size of 5.6 mm and a receptacle in this order and shaken for 10 minutes using a Ro-Tap shaker (rotation speed, 290 rpm; number of taps, 165 rpm). A mass Wb (g) of the gel which has passed through the sieves is measured. The disintegration amount of each sample is calculated using the following equation: Disintegration amount of sample (%)=Wb (g)/Wa (g)×100. An average of the disintegration amounts for three samples to be measured is regarded as the disintegration amount at 20-fold swelling of the water-absorbent resin.

An absorbent article includes an absorbent core. The absorbent core includes an absorbent component enclosed by a core cover. The absorbent component includes a coherent area having an extension of the absorbent article and having an extension in the transverse direction over a full width of the absorbent component, the coherent area having a front edge and a back edge. The absorbent component includes high density areas of absorbent material alternating with low density areas of absorbent material. The high density areas and the low density areas extending in the longitudinal direction of the absorbent article in the front portion and/or in the crotch portion of the absorbent article. The back portion of the absorbent article includes a conformance zone comprising absorbent material. The coherent area and the conformance zone are separated by an area substantially free from absorbent material.

An absorbent article includes an absorbent core. The absorbent core includes an absorbent component enclosed by a core cover. The absorbent component includes a coherent area having an extension of the absorbent article and having an extension in the transverse direction over a full width of the absorbent component, the coherent area having a front edge and a back edge. The absorbent component includes high density areas of absorbent material alternating with low density areas of absorbent material. The high density areas and the low density areas extending in the longitudinal direction of the absorbent article in the front portion and/or in the crotch portion of the absorbent article. The back portion of the absorbent article includes a conformance zone comprising absorbent material. The coherent area and the conformance zone are separated by an area substantially free from absorbent material.

Disclosed is a pant type absorbent article having a back elastic belt comprising a waist guard portion extending towards the crotch region from a closed base line towards an open edge, wherein the waist guard portion is formed by a first inner waist fold extending from a second inner waist fold, the second inner waist fold extending from the inner sheet, and a first elastic member bonded between the first inner waist fold and the second inner waist fold, wherein the waist guard portion is partially bonded to the remainder of the elastic belt from which the first and second inner waist folds extend to define a pocket.

A perspiration mapping patch according to the present disclosure is attached to skin of a user to absorb sweat, and includes: a sweat absorbing layer in which a plurality of opening units is arranged: a first support layer which is stacked on a first surface of the sweat absorbing layer and includes an opening opened to correspond to each of the plurality of opening units: and a second support layer stacked on a second surface facing an opposite side of the first surface of the sweat absorbing layer.

A perspiration mapping patch according to the present disclosure is attached to skin of a user to absorb sweat, and includes: a sweat absorbing layer in which a plurality of opening units is arranged: a first support layer which is stacked on a first surface of the sweat absorbing layer and includes an opening opened to correspond to each of the plurality of opening units: and a second support layer stacked on a second surface facing an opposite side of the first surface of the sweat absorbing layer.

A pad capable of enhancing the fitting performance to a wearer. An absorber includes a front body portion, a back body portion, and a narrowing portion, whose width dimension is reduced, provided between the front body portion and the back body portion. A first groove extending in the front-back direction is formed in a central portion in the width direction of the absorber. A third groove extending in the width direction is formed in a central portion in the front-back direction of the narrowing portion. A second groove extending in the width direction is formed in a front side portion in the front-back direction of the narrowing portion. A fourth groove extending in the width direction is formed in a back side portion in the front-back direction of the narrowing portion.

A pad capable of enhancing the fitting performance to a wearer. An absorber includes a front body portion, a back body portion, and a narrowing portion, whose width dimension is reduced, provided between the front body portion and the back body portion. A first groove extending in the front-back direction is formed in a central portion in the width direction of the absorber. A third groove extending in the width direction is formed in a central portion in the front-back direction of the narrowing portion. A second groove extending in the width direction is formed in a front side portion in the front-back direction of the narrowing portion. A fourth groove extending in the width direction is formed in a back side portion in the front-back direction of the narrowing portion.

In one embodiment, an array of packages may comprise two or more different sizes of disposable absorbent articles. The Product Waist-to-Side Silhouette of a second absorbent article may be equal to or greater than a Product Waist-to-Side Silhouette of a first absorbent article. And, an Array Average Product Waist-to-Side Silhouette of first and second packages of the array may be from about 1.7 to about 6.0.