A too high correction of underpackaging situation can lead to overpackaging. A too high correction of overpackaging situation can lead to underpackaging.
Use a complete LCA evaluation approach to evaluate the new packaging or better use LCA model for optimization scenarios.
Build a complete LCA model including the relationships between packaging functionality / shelflife / and food waste.
Identify variables of optimization (e.g. packaging thickness).
Use the model to determine the optimum situation.
Consider different scenarios of optimization , i.e. different variables for packaging optimization (low to high efficiency, over to under packaging) ; thickness is only an example for simple illustration.
2B Srl, 2021. General guidelines on environmental specification and LCA guided the selection of best markets. Deliverable 3.5 of the MyPack project, 2B Srl, July 2021. Breedveld, L et.al, 2020. Under- or over-packaging: a key question in the food waste debate? Proceedings of the LCAFOOD conference, Berlin 13-10-2020.