Breathable materials comprising low-elongation fabrics, and methods
US7772137B2 · kind B2 · utility
13Cited by
8References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2003 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Dec 14, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/681
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Breathable materials comprise a low-elongation fabric layer and a microporous coating thereon. The microporous coating comprises a crystalline polymer composition and a filler. The materials are suitable for use in various applications including housewrap and other construction embodiments. Methods of making a breathable material comprise extrusion coating a low-elongation fabric layer with a composition comprising a crystalline polymer composition and a filler to form a coating on the low-elongation fabric layer, and incrementally stretching the coated nonwoven layer to render the coating microporous.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.