Meltblown ionomer microfibers and non-woven webs made therefrom for gas filters
US5817415A · kind A · utility
13Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1996 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Sep 12, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2967
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Ethylene/carboxylic acid ionomers may be made, using a meltspun, and particularly meltblown process, into microfibers and thence to filter webs which are efficient gas filters for removing particles having a diameter of from 0.5 to 20 microns from a gas. The webs are effective without a deliberate specific post-charging operation during production. A deliberate post-charging operation can also be carried out to result in further efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.