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US 8,198,505 B2Granted
Disposable absorbent articles comprising non-biopersistent inorganic vitreous microfibers
AssigneeThe Procter & Gamble Company
InventorsBryn Hird, Robert Earl Magness
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Abstract
An absorbent article having a distribution member comprising non-biopersistent inorganic vitreous microfibers. The microfibers have an average effective diameter between about 0.1 micron and about 6 microns and are arranged in a fibrous assembly having a basis weight between about 40 g/m2 and about 350 g/m2 and a density between about 0.04 g/m3 and about 0,25 g/m3. In preferred embodiments, the fibrous assembly can vertically wick a 0.9% saline solution to a height of 5 cm in less than about 5 minutes.
Claims15
A disposable absorbent article comprising
- a fluid permeable topsheet,
- an opposed backsheet, and
- an absorbent core disposed between said topsheet and said backsheet and having a crotch region, a front waist region, and a rear waist region, said absorbent core comprising an absorbent storage member comprising
- a superabsorbent polymer and
- a fluid distribution member comprising an assembly of hydrophilic, non-biopersistent inorganic vitreous microfibers having an in vitro dissolution rate of equal to or greater than 150 ng/cm2/hr, wherein said fluid distribution member has a surface tension reduction of less than about 10 mN/m;
- wherein said microfibers have an average effective diameter of from about 0.1 micron to about 6 microns and an aspect ratio of at least about 100, wherein said aspect ratio of said microfibers is the contour length of said microfibers divided by the average effective diameter of said microfibers.
3 more elements
A disposable absorbent article comprising
- a fluid permeable topsheet,
- an opposed backsheet, and
- an absorbent core disposed between said topsheet and said backsheet and having a crotch region a front waist region and a rear waist region, said absorbent core comprising
- a superabsorbent polymer and
- a removable/replaceable core component comprising a fluid distribution member comprising hydrophilic, non-biopersistent inorganic vitreous microfibers;
- wherein said fluid distribution member has a surface tension reduction of less than about 10 mN/m;
- wherein said microfibers have an average effective diameter of from about 0.1 micron to about 6 microns and an aspect ratio of at least about 100 , wherein said aspect ratio of said microfibers is the contour length of said microfibers divided by the average effective diameter of said microfibers.
4 more elements
Dependencies are inferred from the claim text.