The invention relates to a device for sterilizing cuboid cartons/plastic combination packs in an autoclave, wherein the packs comprising product and packaging are subjected to a heat treatment at a particular temperature for a particular duration, wherein the product is made of a liquid and pelletized components, and wherein a device for rotationally driving the packs about a rotary axis is provided in the interior of the autoclave, and a cuboid carton/plastic combination pack for use in such a device. In order to allow satisfactory sterilization of a large number of packs, without the packs being deformed or the printed images thereof being damaged, according to the invention, a plurality of packs (P) is disposed closely spaced in parallel rows on carrier bases, and a plurality carrier bases populated with packs (P) is disposed over each other and fixed in the opposing location thereof. The carton for the pack used therefor is made hydrophobic by means of lime to reduce the entry of water, and the amount of lime used is between 1 and 4 kg/t of dry fiber material.