TriEnda is a global manufacturer of thermoformed packaging, automotive and material handling solutions in Portage, Wisconsin. Together with sister company Penda and their parent, Kruger Family Industries (KFI), the group employs more than 800 associates in four locations across North America and enjoys a nearly five-decades-long reputation as a leader in the thermoforming industry.
A major North American automotive supplier asked TriEnda to manufacture a reusable shipping container for the battery packs used to power battery electric vehicles (BEVs), one that would meet demanding UN criteria for shipment of dangerous goods. Constructed of ABS (Acrylonitrile Butadiene Styrene) and steel substructure for strength, the container must support robotic loading and unloading of the 37 compartmentalized trays within, each carrying 16 relatively soft, liquid-filled battery cells for a total of 592 per container.
Closed Case
The customer originally conceived that the battery trays be injection-molded. However, with a height tolerance of +/-0.013″ per tray and the fact that only a few injection mold machines in the entire country had sufficient tonnage for that size workpiece, TriEnda soon realized the battery trays would be extremely difficult to manufacture as specified. Instead, it was decided to use the thermoforming process, even though ABS plastic is much more difficult to thermoform than the HDPE used elsewhere in the container. Undeterred, TriEnda personnel built a prototype mold, tested the process, and after customer approval, turned to longtime supplier Tooling Tech Group (TTG) of Ft. Loramie, Ohio for the production tools.
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