A61F2013/530226

ABSORBENT ARTICLE
20180000663 · 2018-01-04 ·

Provided is an absorbent article having excellent shape retention of an absorber even when an external force is applied thereto. The present invention is an absorbent article having: an aqueous-liquid absorbing part having crosslinked polymer particles having as essential constitutional units thereof a water-soluble vinyl monomer and/or a vinyl monomer which became the water-soluble vinyl monomer by hydrolysis, and a crosslinking agent; and a nonwoven fabric having porous fibers as an essential constituent thereof, the crosslinked polymer particles preferably absorbing 40 times the weight thereof of physiological saline 40 in 40-150 seconds.

ABSORBENT NONWOVEN MATERIALS
20220370268 · 2022-11-24 ·

The presently disclosed subject matter relates to multi-layer nonwoven materials and their use in absorbent articles, e.g., as absorbent cores and/or acquisition distribution layers (ADL). More particularly, the presently disclosed subject matter relates to layered structures that provide for improved liquid acquisition, distribution, storage and rewet properties while allowing for the use of less synthetic materials, such as superabsorbent polymers (SAP) than other commercially available materials.

ABSORBENT PRODUCT COMPRISING A NONWOVEN MATERIAL

An absorbent product includes a nonwoven material arranged to be in contact with skin of a user during use of the absorbent product. The nonwoven material includes, at least on a skin contacting surface, a mixture of non-absorbent and absorbent fibres. The absorbent fibres are present in an amount of 2-30% by weight, or about 2-10% by weight, based on the total weight of the fibres in the nonwoven material. The non-absorbent fibres have a coarseness of 1.8 to 10 dtex and the absorbent fibres have a coarseness of 1 to 10. Also disclosed is a use of a nonwoven material in an absorbent product to reduce wet friction between the nonwoven and skin of a user.

TAMPON WITH CONSOLIDATED FIBROUS ASSEMBLY AND METHOD OF MAKING
20170354545 · 2017-12-14 ·

The present disclosure describes a tampon article, a composite fibrous web, and a method of making same. Such an article includes an outer carrier component including an inner surface that defines an internal void. Including an absorbent component elongate along an axis and is disposed in the internal void. The absorbent component includes an outer surface that extends about the axis and faces the inner surface. The absorbent component further includes a composite fibrous web of staple cellulosic fibers and a meltspun web of filaments entangled with the web of staple cellulosic fibers. The composite fibrous web can be in a compressed configuration in the internal void such that at least portion of the outer surface of the absorbent component is defined by the meltspun web of filaments. The tampon can include a withdrawal cord coupled to the absorbent component.

Fluid-Absorbent Article

A fluid-absorbent article having an upper liquid-pervious layer, a lower liquid-impervious layer, a fluid-absorbent core between the layer and the layer, containing from 0 to 20% by weight fibrous material and from 80 to 100% by weight of a water-absorbent polymer material, based on the sum of water-absorbent polymer material and fibrous material. The fluid absorbent article has a first intake time of 15 seconds or less by the hanging U-shape test (HUS).

ULTRATHIN FLUID-ABSORBENT ARTICLE

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.

METHOD FOR PRODUCING WATER-ABSORBING POLYMER PARTICLES BY SUSPENSION POLYMERIZATION

A process for producing water-absorbing polymer particles by suspension polymerization and thermal surface postcrosslinking, wherein the agglomerated base polymer obtained by suspension polymerization has a centrifuge retention capacity of at least 37 g/g and the thermal surface postcrosslinking is conducted at 100 to 190° C.

CARDED NONWOVEN FIBROUS WEB AND USE IN ABSORBENT ARTICLES
20170260689 · 2017-09-14 ·

A carded nonwoven fibrous web and method of making is provided. The web comprises at least 50%, by weight of the fibrous web, of staple fibers and at least 10%, by weight of the fibrous web, of non-fibrous latex binder, wherein, the staple fibers are autogenously bonded to each other and are bonded to each other by the latex binder.

Method for producing water-absorbing polymer particles by suspension polymerization

A process for producing water-absorbing polymer particles by suspension polymerization and thermal surface postcrosslinking, wherein the agglomerated base polymer obtained by suspension polymerization has a centrifuge retention capacity of at least 37 g/g and the thermal surface postcrosslinking is conducted at 100 to 190° C.

DISPOSABLE ABSORPTION PRODUCT AND ABSORBABLE CORE
20210378886 · 2021-12-09 ·

An absorbable core of a disposable absorption product, having an upper polyurethane foam layer which is liquid-permeable and a wrapping layer which is capable of absorbing liquid; the wrapping layer comprises an outer part and an inner part; the outer part is a first liquid-permeable sleeve body; the inner part is an accommodating cavity; a lower polyurethane foam layer and a particle layer are provided inside the accommodating cavity; the particle layer is distributed on an upper surface of the lower polyurethane foam layer and is formed by resin particles, organic acid particles and anhydrous bicarbonate particles mixed together. A disposable absorption product comprising said absorbable core is also provided. By integrating polyurethane polymer foam with superabsorbent polymer particles, organic acid particles and anhydrous bicarbonate particles, the absorbable core is good at absorbing and locking liquid, and provides soft and elastic supporting materials which provide great comfort to users.