| 摘要 |
PROBLEM TO BE SOLVED: To obtain an oriented film excellent in flexibilityt strength and transparency, capable of optionally providing contractility, comprising a resin composition composed of two kinds of ethylene/α-olefin copolymer resins having prescribed physical properties respectively. SOLUTION: A resin composition for this oriented film comprises (A) 30-90wt.% of an ethylene/a 4-8Cα-olefin copolymer resin having 0.915-0.935g/cm<3> density and (B) 70-10wt.% of an ethylene/a 4-8Cα-olefin copolymer resin having <0.915g/cm<3> density and <=3 ratio Mw/Mn of a weight-average molecular weight Mw to a number-average molecular weight Mn. The component A is preferably a linear low-density polyethylene copolymer and has 0.3-3g/10 minutes melt flow rate (under 2.16kg load at 190 deg.C). The component B has preferably 1-6g/10 minutes melt flow rate and 0.91-0.89g/cm<3> density. Hexene, octene or 4- methylpentene is preferable as theα-olefin in the component A and the component B. |
