| 摘要 |
PURPOSE: To obtain a stable molding of high quality by gradually axially deepening the radial depth of a cutout from the root side of a screw shaft of a screw flight to its end side, and setting the side face of the end side of the screw shaft to the same height as the screw flight height. CONSTITUTION: A plurality of cutouts 22 per circumference are equally disposed at a predetermined pitch in the circumferential direction of a screw flight 21 at the flight 21 of a predetermined area of the end side of the screw of a metering kneader. The depths of the cutouts 22 are gradually deepened from the side of the root side of the screw to the side of the end side, and become the same height as the height H of the flight 21 at the side of the end side of the screw of the deepest part. The sectional shaped cut in the direction perpendicular to the axis of the screw of the cutout 22 is, for example, semicircular. In this example, the cutouts 22 are formed along the axial direction of the screw. |
