| 摘要 |
PURPOSE: To easily remove drag-in moisture of material, condensation water and volatile component, and reduce drying load of the material so as to improve productivity by providing a vent at a material feed hopper and connecting it to a feed barrel. CONSTITUTION: In an extruder 10 for manufacturing a thermoplastic resin or a thermoplastic resin composition, a screw 7 penetrates a cylinder constituted by connecting a plurality of cylindrical barrels 11, the screw 7 is rotated by a motor 12 connected to its one end so as to extrude the contents by kneading them from the right to the left. To a feed barrel 8 near the motor 12, a material feed hopper 1 is connected together with a vent 2 through a junction 3. Thus, as the vent 2 is provided at the material feed hopper 1 to be connected to the feed barrel 8, a volatile substance to be generated abruptly can be properly removed through the vent 2, so that drying load of the material is reduced and productivity is improved. |
