The aluminum and plastic can be repurposed into making components. This process is designed more difficult when elements are tightly layered, or are heavily contaminated. Pizza bins with loads of grease could cause very similar challenges, as being the fats are unable to be separated mainly because of the hydrapulper https://gabletopcontainersfood.blogspot.com/2024/09/gabletop-pak-innovating-future-of-top.html