US 11,998,434 B2
Absorbent core cover for super-absorbing absorbent cores of sanitary products
Martin Schuberth, Stammbach (DE); and Uwe Bernhuber, Hof (DE)
Assigned to Sandler AG, Schwarzenbach (DE)
Filed by Sandler AG, Schwarzenbach (DE)
Filed on Jul. 7, 2021, as Appl. No. 17/369,181.
Claims priority of application No. 20187625 (EP), filed on Jul. 24, 2020.
Prior Publication US 2022/0023116 A1, Jan. 27, 2022
Int. Cl. A61F 13/539 (2006.01); A61F 13/15 (2006.01); A61F 13/534 (2006.01); A61F 13/536 (2006.01); A61L 15/28 (2006.01); A61F 13/53 (2006.01)
CPC A61F 13/539 (2013.01) [A61F 13/15203 (2013.01); A61F 13/15731 (2013.01); A61F 13/536 (2013.01); A61L 15/28 (2013.01); A61F 2013/15487 (2013.01); A61F 2013/15552 (2013.01); A61F 2013/15959 (2013.01); A61F 2013/15967 (2013.01); A61F 2013/530379 (2013.01); A61F 2013/530489 (2013.01); A61F 2013/5349 (2013.01)] 18 Claims
OG exemplary drawing
 
1. 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 fibre fleece, and
wherein the staple fibres of the staple fibre fleece comprise coarse fibres with fibre finenesses within a range of 3.3 to 12.0 dtex and a coarse fibre cellulosic fibre proportion of up to 45%.