| 摘要 |
PURPOSE:To obtain a breathing diaper back sheet with excellent film-formability by using a resin composition composed of a linear ethylene-alpha-olefin copolymer, a high-pressure radical-polymerized long-chain branched low-density ethylene polymer, an ethylene-propylene random copolymer rubber, an inorganic powder and an organic lubricant. CONSTITUTION:A resin composition for a breathing diaper back sheet is composed of 100 pts.wt. of a linear ethylene-alpha-olefin copolymer with a density of 0.916-0.940g/ml, a melt index of 0.5-6g/10min. tensile strength of 200kg/cm<2> or more, a melting point of 120 deg. or more and a 1% modulus of 2000kg/cm<2> or more, 10-40 pts.wt. of a high-pressure radical-polymerized long-chain branched low-density ethylene polymer with the density of 0.910-0.930g/ml and a melt index of 2-6g/10min., 20-40 pts.wt. of an ethylene-propylene random copolymer rubber with the density of 0.855-0.865g/ml, melt flow rate of 0.6-10g/10min. and a tensile strength of 180kg/cm<2>, an inorganic powder and an organic lubricant. |
