Polyethylene resin - composition for heavy load packaging bag and polyethylene resin film has produced therefrom

摘要

PURPOSE: To obtain a polyethylene resin compsn. for heavy-duty packaging bag which is excellent in strengths, stiffness, and gloss and has improved low- temp. characteristics, esp. an improved low-temp. bag dropping strength, by compounding a specific linear low-density PE resin, a linear medium- to highdensity PE resin, and a high-pressure low-density PE resin. ;CONSTITUTION: This compsn. comprises 40-70wt.% linear low-density PE resin which is an ethylene-α-olefin copolymer obtd. by copolymerizing ethylene and 1-10mol% 4C or higher a-olefin using a metallocene catalyst and has a melt flow rate (190°C) of 0.1-1.0g/10min. a density of 0.900-0.918 g/cm³, and a mol. wt. distribution (Mw/Mn) by GPC of 1.5-3.5, 1-55wt.% linear medium- to high- density PE resin which is an ethylene homopolymer or a copolymer of ethylene and 10mol% or lower 3-20C a-olefin and has a density of 0.935-0.970g/cm³, and 5-29wt.% high-pressure low-density PE resin which is an ethylene homopolymer or a copolymer of ethylene and 2-10mol% vinyl acetate and has a density of 0.915-0.924g/cm³.;COPYRIGHT: (C)1996,JPO