Multilayer nonwovens incorporating differential cross-sections
US7153793B2 · kind B2 · utility
8Cited by
10References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2003 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Jan 26, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/697
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Nonwoven fabric fabrics suitable for undergoing pleating to form filtration media are provided. The fabrics generally include at least three layers. The fibers forming the inner layer has a cross section providing greater stiffness, while the fibers forming the outer layers have a cross section providing greater durability. The resulting fabrics provide improved particulate holding and pressure drop characteristics at no sacrifice to durability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.