Absorbent Cores for Disposable Absorbent Articles

Henning Roettger, Kaltenkirchen, Germany; and Reno Volkmer, Pritzwalk, Germany.

Assigned to Glatfelter Falkenhagen GmbH, Pritzwalk, Germany.

Filed: 5/15/19
Issued: 7/7/26

An absorbent core for an absorbent article, the absorbent core comprising: a) a fluid distribution layer in the form of a unitary, heterogenous structure and comprising: i) a first sub-layer, wherein the first sub-layer comprises a first amount of multicomponent binder fibers or cross-linked cellulose fibers, or a combination thereof, and the first sub-layer is between 20% and 60% by weight of the fluid distribution layer; ii) a second sub-layer, wherein the second sub-layer comprises treated or untreated pulp and a second amount of multicomponent binder fibers, cross linked cellulose fibers, or a combination thereof, wherein the % by weight of the first amount of the multicomponent binder fibers, the cross-linked cellulose fibers, or the combination thereof of the first sub-layer is greater than the % by weight of the second amount of the multicomponent binder fibers, the cross-linked cellulose fibers, or the combination thereof of the second sub-layer; and iii) one or more additional sub-layers positioned adjacent to the second sub-layer and away from the first sub-layer, wherein the one or more additional sub-layers comprise multicomponent binder fibers, cross-linked cellulose fibers, or a combination thereof in an amount, in % by weight, that is the same or less than the second amount of the multicomponent binder fibers, the cross-linked cellulose fibers, or the combination thereof of the second sub-layer; and b) a fluid storage layer, wherein the fluid storage layer comprises at least 50% by weight of a super absorbent polymer and a surface area of the fluid storage layer is less than a surface area of the fluid distribution layer, wherein the first sub-layer is positioned to be oriented towards a user of the absorbent core, the second sub-layer is positioned to be oriented further away from the user than the first sub-layer, the second sub-layer is sandwiched between the first sub-layer and the one or more additional sub-layers, the fluid distribution layer is formed as an airlaid material, the fluid distribution layer is embossed and does not include any adhesives, and the fluid storage layer is positioned to be oriented further away from the user than the fluid distribution layer.