Stack vs. cube: Making the optimum choice

Loss of cycle time has been one of the primary downsides of cube molds. “If there is enough time in a molding cycle to perform secondary operations that can reduce the added costs associated with performing them downstream, the rotary cube mold is a viable option,” commented Jerry Seidelman, sales & marketing manager for Tech Mold Inc. ( “However, one of the primary downsides of a cube mold may be an unexpected loss of cycle time.”

Cube molds are suitable for multicomponent or multimaterial molding in which two components (or two materials) are molded simultaneously. They are also suitable for the inclusion of any number of secondary operations such as label placement (IML), clear-coating, overmolding and/or insert-molded components. A cube mold can also provide the advantage of molding products with a thick wall section. “The key to the success and cost effectiveness of a rotating cube mold is whether these operations can be done in-cycle,” explained Seidelman....

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