| 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 sheet material preferably consisting of woven or nonwoven synthetic polymers of polypropylene. The membrane has a top surface and a bottom surface, where the bottom surface is intended to face the inclined surface. 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 D638, 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. Where a carrier sheet is utilized, the carrier sheet is comprised of woven or nonwoven materials selected from the group consisting of synthetic polymers of polyethylene (PE), polypropylene (PP), polyethyleneterephthalate (PET), nylon, or copolymers and blends thereof, as well as glass or cotton, or blends thereof. In a preferred embodiment the carrier sheet is comprised of woven or nonwoven polypropylene (PP) or polyethyleneterephthalate (PET). |
