A pack comprising a supporting tray (3), a protective film (4) fixed to the supporting tray (3), and a food product (2) placed on the supporting tray (3) and covered by the protective film (4), wherein the supporting tray (3) is constituted of a flat sheet of multi-layer material and comprises at least one paper-based lower layer and one plastic material upper layer, wherein the protective film (4) is sealed to the upper layer of the flat sheet and together with it delimits an inner space (6) of the pack (1) in which the food product (2) is inserted, and wherein a protective atmosphere is present in the inner space (6).
