Pizza delivery containers have been around at least since the 19th century, when Neapolitan pizza bakers began packaging their goods in multi-layered metallic stufe (plural stufa, "oven") containers before distributing them to street vendors. Round and made of tin or copper, the aerated container was round. Following the Second World War, disposable packaging began to be developed in the US. At that time, pizza was starting to become more and more popular, leading to the development of the first pizza delivery services. They initially tried to deliver pizzas in plain cardboard boxes, similar to those found in bakeries, but these frequently became wet, bent, or even broke in two.
Others who made pizzas attempted to transport them in paper bags and serve them on plates. This helped to solve the issue in part. To transport more than one pizza inside one bag, though, was nearly impossible. The surface of the other pizzas would have been damaged as a result of the pizzas on top. The first patent for a corrugated cardboard pizza box was submitted in 1963, and it already had the features present in pizza packaging today, such as plane blanks, adhesive-free foldability, stackability, and ventilation slots. Such slots avoided the humidity buildups that were typical of conventional transport packaging when combined with water vapour absorbing materials (absorption agent).