POLYPROPYLENE RESIN COMPOSITION POLYPROPYLENE RESIN FOAMED MATERIAL AND PROCESS FOR PROCUCING THE SAME

摘要

The present invention provides a polypropylene resin composition comprising about 90 to 60 parts by weight of a polypropylene block copolymer (A) and about 10 to 40 parts by weight of a polyethylene resin (B), wherein the polypropylene block copolymer is a crystalline (MFR) of from about 2 to about 15 g / 10 min, wherein the melt flow rate (MFR) of the polypropylene (a) is from about 99 to 90% by weight and the amorphous ethylene - ? - olefin copolymer , And has a die swell ratio (measured by a capillary rheometer) of at least about 1.7. Foams containing fine and uniform forms of bubbles can be obtained from the above compositions.