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 feminine night pad is described having multiple layers of absorbent material selectively stacked in a manner to define a body portion and a central portion. Each portion is laid upon an upper surface of a trim member including an impermeable sheet. The body portion has a plurality of absorbing layers set in from the edge of the trim member. The central portion is built upon the body portion and includes one or more layers of additional absorbent material. The trim member is covered in absorbent material and extends around the entire periphery of the body portion. The trim member and corresponding portions are formed into a triangular shape to better conform to a woman's body.

The present invention provides for an absorbent article that includes a topsheet, backsheet and absorbent core. The absorbent core includes a fibrous material and a particulate superabsorbent polymer composition. The superabsorbent polymer composition exhibits advantageous performance of absorption rate, surface tension, bulk density, centrifuge retention capacity, absorbency under load, gel bed permeability and particle size.

An absorbent article includes an absorbent member positioned between a topsheet and a backsheet. The absorbent member contains at least one layer that includes superabsorbent particles containing a porous network that includes a plurality of nanopores having an average cross-sectional dimension of from about 10 to about 500 nanometers, wherein the superabsorbent particles exhibit a Vortex Time of about 80 seconds or less and a free swell gel bed permeability (GBP) of 5 darcys or more, of 10 darcys or more, of 60 darcys or more, or of 90 darcys or more.

It is an object of the present invention to provide a novel water-absorbing sheet that can meaningfully reduce the return amount even when introduction of a liquid occurs intermittently for several times (particularly, three or more times) under a situation with no load, and the amount of introduction of the liquid becomes large.

Disclosed is a water-absorbing sheet having a first base material, a second base material, and a water-absorbing layer positioned between the first base material and the second base material, wherein the first base material is a water-permeable sheet positioned on a side where a liquid to be absorbed is introduced, the water-absorbing layer has a first particulate water absorbent localized on a side of a surf ace of the first base material, the surface being arranged to face the second base material; and a second particulate water absorbent localized on a side of a surface of the second base material, the surface being arranged to face the first base material, an overall absorption amount of the second particulate water absorbent as represented by the following formula:

CRC g/g+0.44×AAP2.1 kPa g/g

is 48 g/g or more, and a water absorption time determined according to a vortex method is 35 seconds or more.

An embodiment of the present invention provides a water-absorbing sheet which, with respect to urine having a wide range of salt concentrations (mass %) including 0, has a favorable liquid absorption speed and favorable re-wet, and which has good comfortability for users, including infants, whose urine tends to change in salt concentration due to a change in the user's physical condition. In a water-absorbing sheet (10), a first particulate water-absorbing agent (12a) and a second particulate water-absorbing agent (12b) are localized, the first particulate water-absorbing agent (12a) has a gel permeation rate (GPR) which differs by 10 or more from that of the second particulate water-absorbing agent (12b), and the gel permeation rate of the second particulate water-absorbing agent (12b) is 50 or less.

A feminine night pad is described having multiple layers of absorbent material selectively stacked in a manner to define a body portion and a central portion. Each portion is laid upon an upper surface of a trim member including an impermeable sheet. The body portion has a plurality of absorbing layers set in from the edge of the trim member. The central portion is built upon the body portion and includes one or more layers of additional absorbent material. The trim member is covered in absorbent material and extends around the entire periphery of the body portion. The trim member and corresponding portions are formed into a triangular shape to better conform to a woman's body.

Provided herein are fluid-absorbent articles, fluid absorbent cores, and fluid-absorbent mixtures with improved properties, especially rewet performance and liquid acquisition. The fluid-absorbent article includes (A) an upper liquid-pervious sheet, (B) a lower liquid-impervious sheet, (C) a fluid-absorbent core including from 60 to 20% by weight fibrous material and from 40 to 80% by weight of at least a first type of water-absorbent polymer particles, (G) and at least a second type of water-absorbent polymer particles (H) based on the sum of water-absorbent polymer particles and fibrous material, (D) an optional acquisition-distribution layer (D) between (A) and (C), (F) other optional components, wherein the first type of water absorbent polymer particles (G) of the fluid-absorbent core (C) have a SFC of at least 2010.sup.7 cm.sup.3.Math.s/g, and wherein the at least second type of water-absorbent polymer particles (H) of the fluid-absorbent core have a sphericity of at least 0.80.

Provided herein are fluid-absorbent articles, fluid absorbent cores, and fluid-absorbent mixtures with improved properties, especially rewet performance and liquid acquisition. The fluid-absorbent article includes (A) an upper liquid-pervious sheet, (B) a lower liquid-impervious sheet, (C) a fluid-absorbent core including from 60 to 20% by weight fibrous material and from 40 to 80% by weight of at least a first type of water-absorbent polymer particles, (G) and at least a second type of water-absorbent polymer particles (H) based on the sum of water-absorbent polymer particles and fibrous material, (D) an optional acquisition-distribution layer (D) between (A) and (C), (F) other optional components, wherein the first type of water absorbent polymer particles (G) of the fluid-absorbent core (C) have a SFC of at least 2010.sup.7 cm.sup.3.Math.s/g, and wherein the at least second type of water-absorbent polymer particles (H) of the fluid-absorbent core have a sphericity of at least 0.80.

The present invention provides (i) a water absorbing agent which is excellent in a water absorbing physical properties, in particular water absorbing speed and has a great bulk specific gravity and (ii) a method for producing the water absorbing agent. The method for producing the water absorbing agent includes a surfactant adding step of adding a surfactant whose HLB is 10 or less. The surfactant adding step is the step of adding a dispersion liquid, which contains the surfactant equivalent to 30 parts by weight to 150 parts by weight, relative to 1000000 parts by weight of a water absorbent resin solid content, and the surfactant adding step is carried out after a drying step. Further, in a case where a water-soluble polyvalent metal salt adding step is carried out after the drying step, the surfactant adding step is carried out after the water-soluble polyvalent metal salt adding step.