POLYETHYLENE RESIN COMPOSITION FOR LAMINATED FILM AND POLYETHYLENE RESIN FILM MADE THEREFROM FOR LAMINATED FILM

摘要

PURPOSE: To improve the low-temp. heat sealability, hot tack properties, impact resistance, unsealability, and extrudability of a polyethylene resin compsn. for a laminated film by compounding a specific linear low-density PE resin, a linear medium- to high-density PE resin, and a high-pressure low-density PE resin. ;CONSTITUTION: This compsn. comprises 40-65wt.% linear low-density PE resin which is a copolymer produced by copolymerizing ethylene and 1-10mol% 4C or higher α-olefin using a metallocene catalyst and has a melt flow rate (190°C) of 0.1-1.0g/10min. a density of 0.900-0.918g/cm³, and a mol.wt. distribution (Muslin) by GPC of 1.5-3.5, 30-55wt.% linear medium-to high-density PE resin which is an ethylene homopolymer or a copolymer of ethylene and 10 mol % or lower 3-20C α-olefin and has a melt flow rate of 5.0-8.0, a density of 0.910-970g/cm³, and a mol.wt. distribution of 2.0-5.0, and 5-30wt.% 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