| 摘要 |
<p>The present invention provides a waterproofing membrane for use on inclined surfaces. The membrane is fabricated from one or more layers of flexible sheet material preferably consisting of woven or nonwoven synthetic polymers of polypropylene. A skid resistant pattern of polymer elements is applied to the top surface of the membrane. The polymer has a Tensile Modulus < 15 MPa (ASTM D638, 23C, 50 mm/min) , a Tensile Yield Elongation >50% (ASTM D538, 23C, 50 mm/min, and a Shore A Hardness (ASTM D2240, 23C, 0 sec) < 90. In a preferred embodiment the polymer elements are made from polyvinyl chloride polymer with a Tensile Modulus < 7 MPa (ASTM D638, 23C, 50 mm/min), a Tensile Yield Elongation >50% (ASTM D638, 23C, 50 mm/min, and a Shore A Hardness (ASTM D2240, 23C, 0 sec) < 75. The pattern of polymer elements may be applied directly on the top surface of the membrane or produced on one side of a carrier sheet which is attached to the top surface of the membrane.</p> |
