Breathable film with internal viral and alcohol barrier layer
US9174420B2 · kind B2 · utility
2Cited by
18References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2009 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | May 25, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24998
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Multilayer breathable barrier films are provided. The films contain one or more layers of polymers without fillers in combination with at least two or more microporous breathable layers. The barrier layer provides a viral and alcohol barrier that can effectively allow moisture vapor to pass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.