| 摘要 |
PURPOSE:To provide the titled composition suitable for use in a heat-sealing layer of wrapping material and having an excellent extrudablity, by melt-blending low-density polyethylene, ethylene/alpha-olefin copolymer and low-crystalinity ethylene/alpha-olefin copolymer. CONSTITUTION:The titled composition is prepared by melt-blending about 10- 70wt% polyethylene density 0.91-0.94g/cm<3>, obtained by radical polymerization, about 20-80wt% ethylene/alpha-olefin (3-8C) copolymer, density 0.91-0.95, and about 10-50wt% low-crystalinity or amorphous ethylene/alpha-olefin (3-4C) copolymer, density 0.85-0.90, and adjusting the composition to have melt index of 1- 15g/10min (190 deg.C) and melt tensile strength of 1.0-7.0g (190 deg.C). |
