| 摘要 |
PURPOSE: To efficiently mold an inflation film particularly even when a resin in which liquid additive is added is used. CONSTITUTION: Raw material resin is melted and kneaded by a twin-screw extruder 3, the pressure of the melted resin is raised by a pump 4, the pressurized melted resin is extruded via a circular die 5, and then expanded to mold into a tubular film 11. |
