| 摘要 |
Apparatus for kneading compounded resinous material includes a cylinder within which there is sequentially arranged a preheating feed zone, a plasticizing kneading zone, a degassing zone and a measuring zone. A screw is rotatably positioned within the cylinder and extends through all of the afore-mentioned zones. The portion of the screw within the plasticizing kneading zone has a plurality of continuous helical flights each of which is given a front wall facing in the direction of screw rotation substantially perpendicular thereto. A rear portion of each flight defines a groove with the next adjacent flight such that the diameter of the screw between flights progressively decreases in the direction opposite to screw rotation. A plurality of axially extending recesses are formed on the interior surface of the cylinder which extend at least through the preheating feed zone and the plasticizing kneading zone. In the preferred forms of the invention, a die or injection nozzle for the material being processed is provided at the downstream end of the measuring zone of the cylinder.
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