Hydroentangled filter media with improved static decay and method
US6942711B2 · kind B2 · utility
45Cited by
21References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2003 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Oct 21, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/692
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is directed to a filter media comprised of an electro-conductive scrim so as to improve on the dissipation time of an electrostatic charge. Further, the present invention is directed to a method of making such a filter media, which is formed through hydroentanglement, thus avoiding the deleterious effects of mechanical needling, while providing a filter media having the requisite strength characteristics, without possessing a limiting factor in performance. The filtration media of the present invention also demonstrates a highly desirable uniformity for cost-effective use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.