| 摘要 |
PURPOSE:To obtain the composition which can give an inflation film well- balanced among lengthwise and crosswise strengths and resistant to blocking by adding an antiblocking agent to a mixture comprising two specified crystalline ethylene/alpha-olefin copolymers and a specified low-density polyethylene. CONSTITUTION:The composition is prepared by adding 0.005-1 pt.wt. antiblocking agent to 100 pts.wt. mixture comprising 50-80wt.% crystalline ethylene/alpha-olefin copolymer having a density of 0.910-0.950g/cm<3> and a melt flow are(MFR) of 0.1-10g/10min, 10-40wt.% crystalline ethylene/alpha-olefin copolymer having a density of 0.880-0.910g/cm<3> and an MFR of 0.1-10g/10min, and 5-40wt.% low-density polyethylene having a density of 0.905-0.935g/cm<3>, an MFR of 0.1-10g/10min and a melt tension(MT) of 4-14g and produced by high-pressure radical polymerization. It has a density of 0.915-0.925g/cm<3>, an MFR of 0.1-10g/10min and an MT of 4-12. |
