POLYPROPYLENE RESIN COMPOSITION FOR EXTRUSION COATING

摘要

Provided is a polypropylene resin composition for extrusion coating, which shows a controlled molecular weight distribution and melt index of a polypropylene copolymer, and thus improves the neck-in characteristics and processability upon extrusion coating. The polypropylene resin composition for extrusion coating comprises: 80.0-95.0 wt% of a polypropylene copolymer having a polydispersity index(molecular weight distribution) of 4.5-10.5 and a melt index of 30-50 g/10 min.; and 5.0-20.0 wt% of low-density polyethylene having a melt tension of 170-200 mN. In the polypropylene resin composition, the polypropylene copolymer is obtained via the copolymerization of propylene with at least one comonomer selected from ethylene and butene.