Absorbent article
US6162961A · kind A · utility
37Cited by
53References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1999 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Apr 12, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/530131
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An absorbent article having exceptional expansion properties when wetted by an aqueous fluid is disclosed. The absorbent article has an absorbent member formed from a multitude of randomly oriented cellulosic fibers containing at least about 20% lignin. The absorbent member has a moisture content of from between about 1% to about 20% water by weight of fiber and the fibers are elastically stressed and bonded by hydrogen bonds. The fibers are retained in a stressed condition and have a density of from between about 0.2 g/cc to about 1 g/cc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.