| 摘要 |
<p>PROBLEM TO BE SOLVED: To stabilize the extrusion amounts of respective extruders by setting the numbers of rotation on the basis of the preliminarily calculated extrusion amounts of the extruders to stabilize the thicknesses of the respective layers of a multilayered parison. SOLUTION: In a method for stabilizing the extrusion amount of a multilayer hollow molding machine, the extrusion amounts of raw materials to the numbers of rotation of respective extruders (2A-2F) are preliminarily measured to be stored as data of y=f(x) and, when set extrusion amounts 8 are set, the extruders (2A-2F) are set to the numbers of rotation to the set extrusion amounts 8 according to y=f(x).</p> |
