Absorbent structure comprising a fibrous matrix having dual z-directional gradient
US5356403A · kind A · utility
38Cited by
12References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1992 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | Nov 30, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/8491
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is an absorbent structure containing a fibrous matrix having a dual Z-directional gradient wherein the concentration of high-absorbency material decreases from a first planar surface of the fibrous matrix to the opposed second planar surface, while the density of the fibrous matrix increases from said first major planar surface to the second planar surface. Also disclosed is an absorbent article containing such an absorbent structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.