Molded monocomponent monolayer respirator with bimodal monolayer monocomponent media
US7858163B2 · kind B2 · utility
21Cited by
64References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 31, 2006 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Dec 11, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249921
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A molded respirator is made from a monocomponent monolayer nonwoven web containing a bimodal mass fraction/fiber size mixture of intermingled continuous monocomponent polymeric microfibers and larger size fibers of the same polymeric composition. The respirator is a cup-shaped porous monocomponent monolayer matrix whose matrix fibers are bonded to one another at at least some points of fiber intersection. The matrix has a King Stiffness greater than 1 N. The respirator may be formed without requiring stiffening layers, bicomponent fibers, or other reinforcement in the filter media layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.