Molded respirator comprising meltblown fiber web with staple fibers
US7989372B2 · kind B2 · utility
1Cited by
33References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2007 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | May 20, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/681
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A molded respirator and method of making are disclosed, wherein the molded respirator is made from a porous nonwoven web containing meltblown fibers and staple fibers. The meltblown fibers may be present as a bimodal mixture of microfibers and mesofibers, and comprise an intermingled mixture with staple fibers further intermingled therein. The molded respirator may also contain at least one secondary filtration layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.