An additional improvement to the hopper is the independently controlled lift assemblies that level the cases prior to feeding them into the case erector.
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Marq Packaging (Yakima, WA) has modified its HPE-NS high-performance case erector to allow quicker and easier adjustments for various box sizes. The original hopper had 2 handwheels to turn to adjust for different box sizes, but the modified case erector requires only 1 adjustment to accommodate case-size changeover.
An additional improvement to the hopper is the independently controlled lift assemblies that level the cases prior to feeding them into the case erector.