| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyethylene composition suitable for use in film forming that, in comparison to former polyethylene composition, has excellent processability such as extrusion, extrusion molding, thickness uniformity and mechanical properties such as strength, impact resistance, stiffness, and especially when it is used for film application, has good uniform thickness during film forming, displacement of resin, bubble stability during extrusion molding, economical efficiency based on low extrusion load current and tear strength. SOLUTION: This polyolefin composition is characterized in that it is composed of (A) a low molecular weight component of 30-60 wt.% having melt index of 50-1,000 g/10 min, density of 0.94-0.98 g/cm<3> and Mw/Mn of 7-15 and (B) a high molecular weight component of 40-70 wt.% having high load melt index of 0.05-2 g/10 min, density of 0.91-0.96 g/cm<3> and Mw/Mn of 7-15, and density difference between (A) and (B) is 0.01 g/cm<3> or more. |
