| US 7,501,357 B2 | ||
| Vapor permeable, liquid impermeable composite fabric and fabrication process | ||
| Todd R. Carroll, Guntersville, Ala. (US); John D. Langley, Guntersville, Ala. (US); and Barry S. Hinkle, Guntersville, Ala. (US) | ||
| Assigned to Kappler, Inc., Guntersville, Ala. (US) | ||
| Filed on Jun. 19, 2002, as Appl. No. 10/175,325. | ||
| Claims priority of provisional application 60/299370, filed on Jun. 19, 2001. | ||
| Prior Publication US 2004/0023585 A1, Feb. 05, 2004 | ||
| Int. Cl. B32B 5/18 (2006.01); B32B 27/12 (2006.01); B32B 27/32 (2006.01); B32B 37/00 (2006.01) | ||
| U.S. Cl. 442—131 [442/38; 442/76; 442/394; 442/398; 156/229] | 39 Claims |
| 1. A microporous barrier composite, comprising:
a flexible, vapor permeable, substantially liquid impermeable polyolefin barrier layer that comprises an ultra-violet light
(UV) stabilizer and a thermal stabilizer; and
a fabric layer;
said composite being incrementally and substantially uniformly stretched along lines that transverse the composite and throughout
the depth of the composite to provide microporosity, said lines varying in porosity from one line to another.
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