| 摘要 |
PURPOSE:To easily remove moisture penetrating into a molding material such as a pellet before extrusion molding when a polyethylene molded article is produced by an extruder. CONSTITUTION:A cylinder 11 is evacuated from the vent hole 12 formed to a part of each of extrusion molding machines 10, 15 to remove moisture penetrating into the molding material in the cylinder 11. |
