| abstract |
Process and apparatus for preparing thermoplastic resin ncompositions comprising a thermoplastic base resin and at nleast one component homogeneously dispersed within the base nresin, using an extruder having at least one extruder barrel nand a screw (12) rotatably disposed within each barrel such that nupon rotation thereof the base resin is kneaded and nmelt-blended with the other component(s) to form the ncomposition. The cross-section (10) of an interior wall of each nbarrel along an axial zone thereof between an inlet and a ndischarge end of the extruder is characterized by being nnon-circular, preferably polygonal, so as to enhance the nkneading action of the extruder. |