| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of an extrusion-molded product that enables to achieve an extrusion-molded product, having excellent surface smoothness, at high speed even if using an extruder, installed with a small extrusion die and having small extruder maximum torque, when molding a molded product by using a thermoplastic resin composition highly filled with a filler.SOLUTION: The manufacturing method of an extrusion-molded product is configured as follows. A thermoplastic resin composition highly filled with a filler is extruded from a small extruder, having small extruder maximum torque, by using a small extrusion die. The small extrusion die is configured such that the length of a parallel part of the extrusion die is less than or equal to 20 times as large as a maximum clearance of a target molded product and the draw angle of a resin channel part of a compression part of the extrusion die is less than 15 degrees with respect to the extrusion direction of the extruder. Then, the thermoplastic resin composition is drawn through a multi-stage cooler. Consequently, it is possible to achieve an extrusion-molded product, having excellent surface smoothness, at high speed. |
