Method of manufacturing modified polypropylene resin composition, as well as the production method of the polypropylene resin molded article and this by The resulting polypropylene resin molded article

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a modified polypropylene-based resin composition capable of providing a polypropylene-based resin molded article with improved mechanical strength and rigidity without using inorganic filler.;SOLUTION: The method for producing the modified polypropylene-based resin composition is characterized by comprising a process for obtaining a resin composition for modification including supplying a polypropylene-based resin (I) to a first extruder and melting/kneading it, supplying a polyethylene-based resin to a second extruder and melting/kneading it at 350 to 400°C, supplying a polyester-based resin to a third extruder and melting/kneading it, and then co-extruding the resuting material from a co-extrusion die to obtain an integrated laminated film composed of the polypropylene-based resin (I) film, polyethylene-based resin film and polyester-based resin film laminated in this order, and cutting the laminated film, and a process for melting/kneading 100 pts.wt. of a polypropylene-based resin (II) and 5 to 30 pts.wt. of the resin composition for modification.;COPYRIGHT: (C)2013,JPO&INPIT