Face masks including a spunbonded/meltblown/spunbonded laminate
US5883026A · kind A · utility
49Cited by
33References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Feb 27, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/696
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to novel face masks, which include a spunbonded/meltblown/spunbonded (SMS) laminate. The face masks of the present invention may include other layers, in addition to the SMS layer, such as an electret meltblown layer, a spunbonded layer, a wet-laid layer or a second SMS laminate. In one embodiment, the face mask includes an outermost SMS layer, an intermediate electret meltblown layer, and an innermost layer in the form of a spunbonded layer, a wet-laid layer or a second SMS laminate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.