Using less material means designing the packaging so that it requires less material while still maintaining its key functions. There are different ways of achieving this.
At the system level, more efficient transport solutions, e.g. decreasing the number of steps in the loading process or a continuous cold chain, may allow material reductions without hampering the protective function of the packaging. Refill solutions where lower functional demands are placed on the refillable packaging than on the disposable packaging can also be a practical way of implementing the optimisation approach here.
At the packaging level, reductions in wall thickness can help. Changing the size of the packaging (e.g. eliminating unnecessary headspace), adapting the dimensions of the packaging (a better ratio of surface and volume), or improving the interaction among primary and secondary (and possibly tertiary) packaging as well as alternative material combinations with enhanced barrier functions may facilitate this material reduction.