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Bonduelle launches next-gen food can

After ten years in development, the leading European food processor Bonduelle has launched a new steel food can that delivers enhanced consumer appeal together with significant environmental benefits.

New DWI steel can is lightweighted by 15% and takes advantage of nitrogen dosing.
New DWI steel can is lightweighted by 15% and takes advantage of nitrogen dosing.

The development of this can, made by Ardagh Group, represents a significant advance in DWI (Draw and Wall Ironing) can production and processing technology. For the first time in food canning, it employs nitrogen dosing techniques similar to those used in the beverage industry. The internal pressure that builds inside the can as a result of nitrogen dosing compensates for the fact that the 400-g can uses 15% less steel than current best-in-class cans. Ardagh estimates that if 1 billion cans were to convert to the new design, the material saving would be equivalent to the weight of metal in the Eiffel Tower.  This also translates into a reduction in carbon footprint estimated by Ardagh to be in the region of 15 per cent.

The introduction of nitrogen dosing in a consistent and controlled way, and how best to accommodate the increased internal pressure upon the can bottom and end, presented a design challenge to the Ardagh team. This was successfully met, and a completely redesigned and re-engineered can is now able to withstand pressures of up to 4.5 bar.

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