Absorbent fibrous web
AssigneeEssity Hygiene and Health Aktiebolag
InventorsJoraine Rössler, Anna Nihlstrand, Lars Fingal
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Abstract
The present disclosure relates to an absorbent fibrous web, in which the fibres are constituted by cellulosic fibres including cellulosic staple fibres and cellulose pulp fibres and the absorbent fibrous web is a foam-formed hydro-entangled fibrous web. The present disclosure further relates to a method of manufacturing such an absorbent fibrous web.
Claims21
An absorbent fibrous web, comprising a foam-formed hydro-entangled fibrous web, the fibres of the absorbent fibrous web being constituted by only cellulosic fibres comprising cellulosic staple fibres and cellulose pulp fibres,
- wherein the cellulosic fibres located in a first surface layer have a sufficiently similar fibre composition and a sufficiently similar orientation of fibres as the cellulosic fibres located at a second surface layer being opposite to the first surface layer in order to avoid two-sidedness,
- wherein the fibres extend at least partly in the Z-direction of the web, wherein the Z-direction is the thickness direction of the web, and wherein the cellulosic staple fibres make up in the range of 2-25% of a total weight of the cellulosic fibres, and
- wherein the web has a Spreading Speed, as measured with an MMT method described herein, taken as an average for both surface layers of the absorbent fibrous web and as an average of top and bottom, of over 6 mm/s.
An absorbent fibrous web, comprising a foam-formed hydro-entangled fibrous web having a first surface layer and a second surface layer, the fibres of the absorbent fibrous web being constituted only by cellulosic fibres comprising cellulosic staple fibres and cellulose pulp fibres,
- wherein during formation of the web, the fibres are fed between two permeable fabrics dewatered through each of the two permeable fabrics so that the orientation of the fibres in the web are symmetrical in a direction perpendicular to the two surface layers,
- wherein the fibres extend at least partly in the Z-direction of the web, wherein the Z-direction is the thickness direction of the web, and wherein the cellulosic staple fibres make up in the range of 2-25% of a total weight of the cellulosic fibres, and
- wherein the web has a Wetting Time, as measured with an MMT method described herein, taken as an average for both surface layers of the absorbent fibrous web and as an average of top and bottom, of less than 2.3 s.
An absorbent fibrous web, comprising a foam-formed hydro-entangled fibrous web, the fibres of the absorbent fibrous web being constituted by only cellulosic fibres comprising cellulosic staple fibres and cellulose pulp fibres,
- wherein the cellulosic fibres located in a first surface layer have a sufficiently similar fibre composition and a sufficiently similar orientation of fibres as the cellulosic fibres located at a second surface layer being opposite to the first surface layer in order to avoid two-sidedness,
- wherein the fibres extend at least partly in the Z-direction of the web, wherein the Z-direction is the thickness direction of the web, and wherein the cellulosic staple fibres make up in the range of 2-25% of a total weight of the cellulosic fibres, and
- wherein the web has an Absorption Time of less than 1.0 s as measured with an AWR method described herein.
An absorbent fibrous web, comprising a foam-formed hydro-entangled fibrous web, the fibres of the absorbent fibrous web being constituted by only cellulosic fibres comprising cellulosic staple fibres and cellulose pulp fibres,
- wherein the cellulosic fibres located in a first surface layer have a sufficiently similar fibre composition and a sufficiently similar orientation of fibres as the cellulosic fibres located at a second surface layer being opposite to the first surface layer in order to avoid two-sidedness,
- wherein the fibres extend at least partly in the Z-direction of the web, wherein the Z-direction is the thickness direction of the web, and wherein the cellulosic staple fibres make up in the range of 2-25% of a total weight of the cellulosic fibres, and
- wherein the web has a Water Spreading Length in a machine direction of the absorbent fibrous web of at least 60 mm as measured with an AWR method described herein.
Dependencies are inferred from the claim text.