| 摘要 |
The present invention provides a waterproofing membrane for use on inclined surfaces. The membrane is fabricated from one or more layers of flexible she et material preferably consisting of woven or nonwoven synthetic polymers of polypropylene. A skid resistant pattern of polymer elements is applied to th e 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 prefer red embodiment the polymer elements are made from polyvinyl chloride polymer wit h 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. |
