METHOD FOR PRODUCING RESIN COMPOSITION, RESIN COMPOSITION, REFLECTION PLATE AND LIGHT-EMITTING DEVICE

摘要

The present invention provides a method for producing a resin composition comprising a thermoplastic resin and a filler, the method comprising providing an extrusion granulator that comprises (i) a cylinder provided with an outlet, a first feed port and a second feed port located downstream from the first feed port but upstream from the midpoint between the first feed port and the outlet and (ii) at least one screw mounted in the cylinder; feeding the thermoplastic resin and the filler into the cylinder wherein the thermoplastic resin is fed through the first feed port and at least part of the filler is fed through the second feed port; kneading the thermoplastic resin and the filler while transporting them towards the outlet to provide a mixture; and extruding the mixture to produce the composition.