| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a water-blocking sheet excellent in heat sealing property, weather resistance, chemical resistance and oil resistance, having a flexibility capable of deforming and useful for a general waste material treating place by using a resin composition obtained by blending a polypropylene with a prescribed rubber and a low density polyethylene in a specific ratio. SOLUTION: This water-blocking sheet is prepared by using a resin composition consisting of (A) 15-65wt.% low density polyethylene, (B) 30-10wt.% polypropylene and (C) 60-20wt.% at least one of ethylene-propylene rubber or ethylene-propylene-butadiene-based rubber, and has >=200μm thickness. Further, it is preferable that the component B is a random copolymer of propylene with ethylene, the component B and the component C are mixed beforehand, the Young's modulus of the mixed state is <=100N/mm<2> and the sheet comprising the above resin composition is used for at least one of the three layers consisting of both outer layers and a core layer.</p> |
