Nanofiber filter media
US6872311B2 · kind B2 · utility
187Cited by
34References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2003 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Jun 26, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24686
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is directed to an air filter medium comprising nanofibers, the filter medium having a thickness of less than 0.25 millimeters, a Figure of Merit of greater than about 0.075, and an efficiency of greater than about 99.9% when capturing aerosol particles of about 0.18 microns in size and a pressure drop of less than about 40 millimeters water column at a flow rate of about 32 liters/minute through a sample 100 cm2 in size. A coating of the nanofibers may also be used to enhance performance of existing filter media by increasing the FOM of the existing filter media. Preferably, the nanofibers are fibrillated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.