OLEFIN RESIN COMPOSITION HAVING EXCELLENT SEALABILITY IN PRESENCE OF FOREIGN MATERIAL AND FILM COMPOSED OF SAID COMPOSITION

摘要

PURPOSE:To provide the titled composition obtained by compounding a specific linear low-density polyethylene with a high-pressure low-density PE (PEVA) and giving a heavy-duty packaging bag having excellent filling operability and heat-sealability of the mouth and good workability, sealing strength and formability. CONSTITUTION:(A) A linear low-density polyethylene having a molecular weight distribution (MW/MN) of <=6 is compounded with (B) a high-pressure low-density polyethylene or a high-pressure low-density ethylene-vinyl acetate copolymer at a weight ratio of 20:80-80:20. The component A is preferably the one having an MFR of 0.3-6, preferably 0.9-3g/10min and a molecular weight distribution of 5-2. The component B is preferably an ethylene-vinyl acetate copolymer containing 2-8wt% vinyl acetate comonomer and having an MFR of 0.25-10g/10min. The thickness of the film is 100-300mum, preferably 150-200mum.