Deodorizing air filter and method of fabricating same
US6302946A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2000 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Jul 17, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A deodorizing air filter media which is composed of a web of non-woven fibers having myriad discrete particles of a deodorizing component, such as sodium bicarbonate, uniformly dispersed throughout the thickness of the web. The media is fabricated by a two step process, wherein a non-woven web is passed through a first aqueous solution including a binder, and then dried to cured the binder and anchor the crossing points of the fibers in the web. Next, the dried web is passed through a second aqueous solution having a binder in a reduced concentration, together with a particulate deodorizing component suspended therein. The web is then again dried to cure the newly added binder and anchor the particulate deodorizing component to the fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.