Aluminium-salt impregnated fibres, a method for their manufacture, fluff consisting of such fibres, and the use of the fibres as absorption material
US5601921A · kind A · utility
33Cited by
3References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1994 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Jun 28, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2958
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Aluminum salt impregnated organic pulp fibers for use in absorption articles are disclosed. The fibers have an aluminum content of 3-100 g/kg based on the weight of dry pulp. The pulp fibers are in the form of fluff and, when disposed in a layer, exhibit increased absorption rates and improved dispersion of liquid in horizontal and vertical directions. The fibers, in the form of an aqueous suspension, are impregnated with aluminum salt in aqueous solution at a pH of 5-11, preferably 8.5-9.5 and most preferably at a pH of 9. Impregnation may optionally be carried out in the presence of a silicate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.