| abstract |
A composition which has excellent transparency and impact resistance and improved low-temperature heat-sealing properties, improved strength and flexing resistance at heat-sealed portions thereof, and which comprises a mixture of at least two ethylene-rich ethylene-a-olefin copolymers (A) and (B): (A) 95 to 45 wt % of a random copolymer between ethylene and a C 5 to C 10 a-olefin, which has a melt index of 0.1 to 20 g/10 min, a density of 0.910 to 0.940 g/cm 3 , a crystallinity of 40 to 70% (measured by X-ray analysis), a m.p. of 115 to 130 °C, and an ethylene content of 94 to 99.5 mol%; and (B) 5 to 60 wt % of a random copolymer between ethylene and a C 3 to C 10 a-olefin, which has a melt index of 0.1 to 50 g/10 min, a density of 0.870 to 0.900 g/cm 3 , a crystallinity of 5 to 40% (measured by X-ray analysis), a m.p. of 40 to 100°C, and an ethylene content of 85 to 95 mol%. |