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Absorbent Core Cover for Super-Absorbing Absorbent Cores of Sanitary Products:

U.S. Patent No. 11,998,434

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By: Tara Olivo

Associate Editor at Nonwovens Industry, Rodman Media

Martin Schuberth, Stammbach, Germany; and Uwe Bernhuber, Hof, Germany.
Assigned to Sandler AG, Schwarzenbach, Germany.

Filed: 7/7/21
Issued: 6/4/24

An absorbent core for sanitary products, comprising an absorption matrix having a high proportion of super-absorbing particles and an absorbent core cover for enveloping the absorption matrix, wherein the absorbent core cover comprises at least one upper side sheet and at least one bottom side sheet, and the absorbent core cover comprises at least one connection region spaced apart from the edge of the absorbent core in which the upper side sheet and the bottom side sheet are connected to each other, wherein at least the upper side sheet of the absorbent core cover is embodied as a fleece composite with a fixing layer with a low permeability to retain the particles in the absorption matrix, and a transfer layer for acquiring fluid, wherein the fixing layer is embodied as a spunbond fleece, a meltblown fleece, or an SMS fleece with an SMS layer structure, and the transfer layer is embodied as a staple fiber fleece, and wherein the staple fibers of the staple fiber fleece comprise coarse fibers with fiber finenesses within a range of 3.3 to 12.0 dtex and a coarse fiber cellulosic fiber proportion of up to 45%.

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