Stackpack is happy to announce that on 08.06.2022 we received patent EP3768118, the best cardboard tray solution for keeping the flanks down and tension on the lidding film. These heat-sealed cardboard punnets for fruit and vegetables are designed for use with heat sealed (traditional) lidding film / net lidding / paper lidding etc. Customers can achieve significant plastic reduction while ensuring optimum functionality is retained. Compostable range of lidding films is also currently in trial and will present additional opportunities for sustainable packaging solution. And the best part; they are stackable due to the patented specifications.