Vertical injection vs. Parting line injection for a vertical machine

I was recently asked…
If I have the option to design my mold for vertical or parting line injection which should I choose assuming I use a vertical machine?
My Response
If your tool is designed for vertical injection in a vertical molding machine you are not limiting yourself to using a vertical machine. A tool that is vertically fed can also be installed in an inline machine and produce parts. If the tool is designed for parting line injection you are limiting yourself to one machine type. If the vertical machine were to break and only an inline machine was available, parts could still be produced on the inline machine assuming machine specs were sufficient for part production.
If parting line injection is better suited for the application and your company can facilitate it, then always use the preferred method for the application.

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