Air filtration medium with improved dust loading capacity and improved resistance to high humidity environment
US8636833B2 · kind B2 · utility
13Cited by
22References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2010 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | May 3, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/065
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for filtering particles from water mist laden air involves passing the air through a medium that has a nanoweb layer in fluid contact with a hydrophobic nonwoven web. The hydrophobic web can be made of an intrinsically hydrophobic material, or can be coated with a hydrophobic coating. The medium does not undergo the large pressure drops normally associated with filtration of water mists and retains its efficiency well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.