Enhanced barrier film and laminate and method for producing same
US6610163B1 · kind B1 · utility
20Cited by
33References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1998 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Dec 11, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/68
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A breathable barrier film laminate having a microporous multilayer film formed by extruding a polymer loaded with a filler having a particle size suitable for pore formation, hot blowing the extruded film, forming a hot blown film bubble, collapsing the hot blown film bubble, forming a multilayer film and stretching the multilayer film, forming a plurality of micropores, and a nonwoven web material layer bonded to at least one surface of the microporous multilayer film. The breathable barrier film laminate is particularly suitable for use in protective apparel such as surgical gowns, surgical drapes, and coveralls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.