Absorbent cores comprising a core wrap which comprises a liquid permeable substrate layer, the core may contain from about 87% to about 100% of superabsorbent polymer, wherein: (i) the core comprises from about 0.5% to about 20% of an adhesive; (ii), the superabsorbent polymer is disposed in a plurality of frangible pockets in or on the liquid permeable substrate layer; or (iii) both (i) and (ii); and further, the core exhibits a material movement of about 0.2 cm or more, as measured with a Superabsorbent Material Movement Test.

Provided is a water-absorbing agent that causes no or little fluctuation of feed rate when fed with use of a feeder. A water-absorbing agent containing a water-absorbing resin as a main component, the water-absorbing agent satisfying the following (a) and (b): (a) K-index is 70 or more; and (b) Moisture absorption blocking ratio, after 30 minutes of standing at a temperature of 25° C. and a relative humidity of 80% RH, is 70 weight % or less, the K-index being defined by the following equation: K-index=100−(−438+3.6×angle of repose+3.5×angle of difference+7.9×compressibility rate+290×bulk density (EDANA method)).

Described herein are absorbent composites containing embossed superabsorbent materials and methods of manufacturing absorbent composites containing embossed superabsorbent materials. The absorbent composites have significantly improved rates of intake. Compositions and methods described herein are useful in a variety of absorbent products.

An absorbent composite includes a porous base layer, a core layer, and a superabsorbent laminate layer. The core layer has a fluff pulp layer and superabsorbent polymer particles. The core layer is disposed on the base layer. The superabsorbent laminate layer is disposed on the core layer. The base layer, the core layer, and the superabsorbent laminate layer are compressed together and embossed under heat and pressure to form a plurality of embossed depressions. The embossed depressions are arranged across a major surface area of the superabsorbent laminate layer. The embossed depressions extend through the composite from the superabsorbent laminate layer and into the core layer and the base layer. A thin, soft, and pliable absorbent composite suitable for a variety of applications including wound care is thereby provided.

The present invention relates to a fluid-absorbent article, comprising a fluid-absorbent core, comprising from 0 to 90% by weight fibrous material and from 10 to 100% by weight water-absorbent polymer particles having a mean sphericity (SPHT) from 0.8 to 0.95, based on the sum of water-absorbent polymer particles and fibrous material;

and an acquisition-distribution layer between having a three dimensional apertured structure having a femal side (5) and a male side (6), wherein the femal side presents a multiplicity of openings extending in the form of through holes in the direction of a lower surface of the same structure being the male side, wherein the quantity of the water absorbent polymer particles within the fluid absorbent core is at least 3 g.

Absorbent core and an absorbent article respectively with improved properties, especially rewet performance, are disclosed. The absorbent core contains at least two layers, wherein each layer has from 0 to 10% by weight fibrous material and from 90 to 100% by weight water-absorbent polymer particles, based on the sum of water-absorbent polymer particles and fibrous material. The surface crosslinked water absorbent polymer particles within the upper layer have a sphericity of at least 0.89 and the absorbent core shows a CRC.sub.AP/TAC.sub.AP ratio of at least 0.65.

An absorbent core and an absorbent article respectively with improved properties, especially rewet performance, are disclosed. The absorbent core has at least two layers, wherein each layer comprising from 0 to 10% by weight fibrous material and from 90 to 100% by weight water-absorbent polymer particles, based on the sum of water-absorbent polymer particles and fibrous material. The surface-postcrosslinked water absorbent polymer particles within the upper layer have a sphericity of at least 0.89 and a CRC of at least 34 g/g. Preferably the water-absorbent polymer particles have a sphericity of at least 0.89 and the sum of the CRC and AUL (0.3 psi, 21 g cm.sup.−2) (EDANA 442.2-02) of the water absorbent polymer particles is at least 65 g/g.

An absorbent core suitable for use in an absorbent article comprising: a first absorbent layer, the first absorbent layer comprising a first substrate, and a layer of cross-linked cellulose fibers deposited on the first substrate, a second absorbent layer, the second absorbent layer comprising a second substrate, a layer of superabsorbent polymer particles deposited on the second substrate and a fibrous layer of thermoplastic adhesive material covering the layer of superabsorbent polymer particles. The first and second absorbent layers being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material contacts at least a portion of the layer of cross-linked cellulose fibers of the first absorbent layer.

Disclosed are water-absorbent resin particles including: a crosslinked polymer having a structural unit derived from an ethylenically unsaturated monomer including at least one compound selected from the group consisting of (meth)acrylic acid and a salt thereof, in which a proportion of (meth)acrylic acid and a salt thereof is 70 to 100 mol % with respect to a total amount of monomer units in the crosslinked polymer, and in a moisture retention test performed under reduced pressure, a moisture retention rate after 6 hours is 55% by mass or more, and a water retention capacity for a physiological saline solution is 32 to 70 g/g.

Water-absorbent resin particles having a degree of gel association of 15 or more are disclosed.