POLYPROPYLENE RESIN COMPOSITION FOR EXTRUSION COATING

摘要

PURPOSE: Provided are polypropylene resin compositions for extrusion coating which have excellent high speed processability, neck in properties and heat adhesiveness. CONSTITUTION: The polypropylene resin compositions include 70 to 90 wt% of a propylene resin having a flow index of 10 to 30/10min according to the standard of ASTM D1238 under conditions of 230 deg.C and 2.16 kg and 10 to 30 wt% of propylene ionomer resin. The polypropylene resin compositions have a melt index of 20 to 35 g/10min according to the standard of ASTM D1238 under conditions of 230 deg.C and 2.16 kg. The propylene resin may be propylene-ethylene-butene-1 copolymer having a melt index of 20 to 35 g/10min according to the standard of ASTM D1238 under conditions of 230 deg.C and 2.16 kg. The propylene ionomer resin has a melting point of 90 to 110 deg.C and may be a copolymer of propylene, acidic comonomer and acrylate comonomer having a melt index of 20 to 35 g/10min according to the standard of ASTM D1238 under conditions of 230 deg.C and 2.16 kg.