| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a covering sheet which is used as a substitute for a flexible vinyl chloride covering sheet and is excellent in properties such as flexibility and impact resistance and is desirably used as e.g. a mattress sheet, sand erosion preventing sheet, a sand erosion joint sheet or a wash-off preventing anchor mat. SOLUTION: This covering sheet is obtained by molding a resin composition comprising 100 pts.wt. propylene/α-olefin block copolymer having the following properties (a) to (d): (a) the main crystallization peak temperature is 85-95 deg.C when measured by the DSC method, (b) the half-width of the main crystallization peak temperature is 3-10 deg.C, (c) a subsidiary peak exists, and it appears at a temperature of 65-75 deg.C, and (d) the rate of the area of the main crystallization peak to that of the subsidiary crystallization peak is 3-15%, and 10-80 pts.wt. spherical inorganic filler.</p> |
