Barrier fabric and method
US4898761A · kind A · utility
67Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Dec 7, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/662
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A barrier fabric is provided which is impermeable to liquids and permeable to vapor. A polymer film is laminated to a porous fibrous web. The composite web is then needled repeatedly with fine conical needles to provide micropores through the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.