| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an impervious sheet for construction work which has high non-slip properties, and heat-deterioration resistance and which can be used safely even if there is a slope at site or in a rainy weather. SOLUTION: The impervious sheet is composed of a long-sized sheet obtained by using a polyolefin resin which contains, as a principal component, an ethylene-(3-12C)α-olefin copolymer produced in the presence of a metallocene catalyst and further contains, as required, an ethylene-vinyl acetate copolymer, and has 0.3-12 g/10 min MFR. At least one of the surfaces (5-50 cm in width) of a non-irregular side edge of the sheet is a pear-skin rough surface of Rz of 5 to 200μm or a flat surface of Rz below 5μm, while on the remainder of the sheet, a large number of projections having a height of 0.5 to 3.0 mm, which are spaced apart one from another, are formed at a distribution density of 3-100 pieces/100 cm<2> .</p> |
