What method is used in injection blow molding to achieve the type of part wall thickness control that can be obtained in programmable parisons?
What will be an ideal response?
Programmable parisons only have meaning in extrusion blow molding because they are made with a movable mandrel in the extrusion die. However, a similar effect can be achieved in injection blow molding if the core pin of the preform
mold cavity is shaped. This shaping will create some thick section of the preform which can be placed in the locations that will travel the farthest in the mold.
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