Hydroentangled filter media and method
US7015158B2 · kind B2 · utility
5Cited by
20References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2002 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Jan 16, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/69
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter media formed in accordance with the present invention comprises hydroentangled, predominantly polyester staple length fibers having a basis weight of no more than about 12 oz/yd2. The filter media exhibits a Mullen burst strength of at least about 395 psi, and machine-direction and cross-direction shrinkage of less than about 3%, preferably less than about 2%. The filter media exhibits a machine-direction tensile strength of at least about 105 lb/in, and a cross-direction tensile strength of at least about 110 lb/in.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.