Trackified air filtration media and a self-supporting filter having improved stiffness and foldability
US8668758B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2008 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Oct 16, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present disclosure relates generally to a nonwoven filtration media comprising a bonded mix of different, discontinuous, thermoplastic resin fibers and optionally discontinuous cellulosic fibers. In some embodiments a tackifier is added to the nonwoven filtration media to provide a sticky or adhesive surface on the fibers. The nonwoven media has an advantageous combination of stiffness, foldability, efficiency and the ability to retain a fold. The nonwoven media can be thermally bonded during the production process. The advantageous combination of mechanical properties allow the disclosed nonwoven media to accept and retain folds and pleats better than some conventional filtration materials while the mix of different fibers provides desirable filtration properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.