Water vapor breathable, liquid water resistant material
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United States of America Patent
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Dec 12, 2006
Issued Date -
N/A
app pub date -
May 11, 2004
filing date -
Dec 10, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention relates to a composite sheet material that is water vapor permeable and substantially liquid water impermeable. The composite sheet material includes an outer layer, a film, and a reinforcing layer and, preferably, has an ASTM D3833 water vapor transmission rate of greater than 250 g/m.sup.2/day, and a tensile strength of at least about 100 N/5 cm when tested in accordance with ASTM D5035. The sheet material is useful as a membrane for roofing, housewrap, insulation facing and in the fabrication of protective apparel.
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Cited Art Landscape
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