Meltblown barrier webs and processes of making same
US5645057A · kind A · utility
70Cited by
28References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1996 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Jul 2, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/68
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A nonwoven disposable face mask includes a filtration layer formed of a plurality of thermoplastic microfine meltblown microfibers having an average fiber diameter of less than 1.5 microns. The filtration layer also has a basis weight of less than ten grams per square meter. The resultant face mask provides improved wearer comfort and barrier and filtration properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.