| 摘要 |
PURPOSE:To provide a system for regulating the deviation of film thickness which can regulate simply the deviation of film thickness in the process of inflation molding. CONSTITUTION:In the inflation molding of a cylindrical melt extruded from an inflation die to make a film, more than one blowhole is installed around the cylindrical melt. A blowing pass 4 is connected individually to each blowhole, and a blower 5 is attached to the blowing pass 4. An air-capacity regulator 6 which regulates the volume of air passing through each blowing pass 4 is also installed to regulate individually the volume of air ejected from each blowhole. |
