Patent classifications
A61F2013/53051
MULTI-LAYER ABSORBENT CORES AND METHODS OF MANUFACTURE
Multi-layered absorbent bodies and methods of manufacture are disclosed. A method of forming an absorbent body may comprise moving a first covering material in a machine direction, moving a reinforcing material in the machine direction and combining the reinforcing material with the first covering material, the reinforcing material having a top side and a bottom side, applying absorbent material comprising superabsorbent particles to the top side of the reinforcing material, moving a second covering material in the machine direction and combining the second covering material with the first covering material and the reinforcing material to form a laminate structure of the first covering material, the reinforcing material, and the second covering material, with the first covering material disposed underneath the reinforcing material and the second covering material disposed on top of the reinforcing material, and embossing the laminate structure.
MULTI-LAYER ABSORBENT CORES AND METHODS OF MANUFACTURE
Multi-layered absorbent bodies and methods of manufacture are disclosed. An absorbent body may comprise a top, liquid permeable covering material, a bottom covering material, a reinforcing material disposed between the top covering material and the bottom covering material, the reinforcing material bonded directly to the top covering material by a first adhesive layer and bonded directly to the bottom covering material by a second adhesive layer, and superabsorbent material disposed between the top covering material and the bottom covering material, wherein between about 30% and about 85%, by weight, of the total amount of superabsorbent material disposed between the top covering material and the bottom covering material is stabilized within the reinforcing material, as determined according to the SAM Stabilization Location Test Method.
Absorbent Composite, an Absorbent Article Employing the Same, and Methods, Systems, and Apparatus for Making the Absorbent Composite and/or Article
An absorbent core composite is disclosed for incorporation into a disposable absorbent article. The composite includes a first material layer and a second material layer (preferably nonwoven) partially secured to the first material layer to define at least one pocket therebetween. Preferably, multiple pockets are defined, except in the case of where a generally uniform layer or bed of absorbent is preferred or better suited fro the application. The pocket is said have a fixed initial volume. Further, an aggregate of absorbent particles is provided in the pocket(s) to occupy a portion of the fixed initial volume. The absorbent particles are preferably SAP particles and is characterized by a dry volume associated with a dry state and a swell volume associated with a liquid saturation state. In respect to or for the pocket, the aggregate is characterized by a collective dry volume and a collective swell volume, wherein the pocket has an initial configuration that retains the aggregate therein.
Absorbent cores having material free areas
An absorbent core (28), for use in an absorbent article, comprising a core wrap (16, 16′) enclosing an absorbent material (60) comprising superabsorbent polymer particles. The core wrap comprises a top side (16) and a bottom side (16′), and the absorbent core comprises one or more area(s) (26) substantially free of absorbent material through which the top side of the core wrap is attached to the bottom side of the core wrap, so that when the absorbent material swells the core wrap forms one or more channel(s) (26′) along the area(s) (26) substantially free of absorbent material. The superabsorbent polymer particles have a time to reach an uptake of 20 g/g (T20) of less than 240 s as measured according to the K(t) test method.
Absorbent article with strong and weak bonded portions
An absorbent article includes an absorber having a front surface side sheet, a back surface side sheet disposed on the back surface side of the front surface side sheet, cells each of which is surrounded by bonded portions of the front surface side sheet and the back surface side sheet and inside each of which the front surface side sheet and the back surface side sheet are not bonded, and particulate materials which include superabsorbent polymer particles and which are contained in each of the cells. The bonded portions are arranged in continuous line shapes or dotted line shapes so as to form same-sized regular hexagons, which connect each other as unit shapes to be a honeycomb shape. All the cells are the same-sized regular hexagonal cells each of which is surrounded by the bonded portions.
Lower surface friction absorbent articles and related methods therefor
An absorbent article includes a fluid pervious top sheet, a fluid impervious bottom sheet, and an absorbent core positioned therebetween. The top sheet comprises a plurality of bicomponent fibers having target friction characteristics.
Absorbent composite, an absorbent article employing the same, and methods, systems, and apparatus for making the absorbent composite and/or article
An absorbent core composite is disclosed for incorporation into a disposable absorbent article. The composite includes a first material layer and a second material layer (preferably nonwoven) partially secured to the first material layer to define at least one pocket therebetween. Preferably, multiple pockets are defined, except in the case of where a generally uniform layer or bed of absorbent is preferred or better suited for the application. The pocket is said have a fixed initial volume. Further, an aggregate of absorbent particles is provided in the pocket(s) to occupy a portion of the fixed initial volume. The absorbent particles are preferably SAP particles and is characterized by a dry volume associated with a dry state and a swell volume associated with a liquid saturation state. In respect to or for the pocket, the aggregate is characterized by a collective dry volume and a collective swell volume, wherein the pocket has an initial configuration that retains the aggregate therein.
Apparatus and method of manufacturing of an absorbent element for sanitary products
An apparatus for manufacturing an absorbent element for sanitary products and a method for manufacturing the same are disclosed. The absorbent element is of the type incorporating plurality of sacs or pockets in which expandable super-absorbent material is placed.
Absorbent product
In an absorbent product (1), a first absorbent sheet (22) is disposed between a top sheet (21) and a back sheet (23). A second absorbent sheet (22a) is disposed between the first absorbent sheet (22) and the back sheet (23). The first absorbent sheet (22) includes a first upper sheet (221), a first highly absorbent material (222), and a first lower sheet (223). The first absorbent sheet (22) extends in the longitudinal direction beyond the longitudinal edges of the second absorbent sheet (22a) on both longitudinal sides. On each longitudinal side, an extension (224) of the first absorbent sheet (22) beyond the second absorbent sheet (22a) includes a back-sheet contact region (225) that is spaced in the longitudinal direction from the longitudinal edge of the second absorbent sheet (22a) and that is in contact with the back sheet (23). This configuration suppresses the return of liquid.
ABSORBENT ARTICLE WITH IMPROVED CAPILLARY ACCELERATION SHEET
An absorbent article comprising a liquid pervious topsheet (300), a liquid impervious backsheet (200), absorbent material positioned between the liquid pervious topsheet and the liquid impervious backsheet, and a capillary acceleration sheet (400) between the absorbent material and the liquid pervious topsheet, wherein the absorbent material, typically comprising superabsorbent particles, is arranged on a bottom core wrap sheet such that one or more channels are formed, wherein less absorbent material per surface area is present in the one or more channels compared to an area around the one or more channels, wherein preferably substantially no absorbent material is present in the one or more channels, wherein the capillary acceleration sheet (400) comprises at least one meltblown layer, and wherein the at least one meltblown layer represents between 2 and 8 weight % of the weight of the capillary acceleration sheet.