Elastomeric filtration materials
US5035240A · kind A · utility
34Cited by
17References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1990 |
| Grant date | Jul 30, 1991 |
| Priority date | — |
| Expiry date | Jun 19, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/56
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Elastomeric nonwoven fibrous fluid filter media for removal of particulate contaminants from the fluid are provided. The filter media comprises thermoplastic elastomeric melt-blown small diameter fibers, the small diameter fibers being randomly arrayed, the filter media having substantially uniform stretch properties in all directions and whose filtration properties are independent of filter media elongations sufficient to increase the filter media surface area at least about 10 percent. The filter media is particularly useful as a prefilter on respirators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.