Water vapor barrier for a concrete flooring system
US8171687B2 · kind B2 · utility
11Cited by
30References
18Claims
0Family size
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Key dates
| Filing date | Mar 24, 2009 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Jul 31, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/678
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A water vapor barrier material for a building structure includes a base entangled net material and a composite nonwoven. The composite nonwoven includes a film layer with a nonwoven layer on each side of the film layer. The film layer has a water vapor transmission rate of less than 10.0 g-MIL/100-in2/day at a temperature of 100 degrees Fahrenheit and 90 percent relative humidity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.