Packaging comprising a plastic container with constant stacking pitch

A packaging (1) comprising a plastic container (2), comprising side walls (20, 21, 22, 23) meeting in corners (24), an upper opening (25) and a bottom (26), as well as a detachable plastic lid (4), configured to cover the upper opening of the container (2), and wherein said container (2) is provided, at the upper opening (25) thereof, with a first engagement portion (34) bearing an outwardly-directed ridge (27) that extends over the periphery, said lid being provided, over the periphery thereof, with a second engagement portion (40) extending downwardly in a folded manner and provided with an inwardly-directed ridge (41), which is able to attach below the ridge (27) that is directed toward the outside of the container,

• and wherein said side walls (20, 21, 22, 23) of the container are divergent, together forming a truncated pyramid, configured so that said container can be stacked in an identical container,
• said container having projecting portions (29) extending from side walls at the upper opening (25) of the container and below said first engagement portion (34) of the container, said projecting portions (29) being outside the container and being in the form of outer ribs (31), extending vertically below said first engagement portion (34) of the container, each vertical outer rib (31), having, at the bottom end thereof, a flat part (32) intended to cooperate in abutment with the upper edge (30) of the upper opening of the identical container inside which said container is stacked, said projecting portions (29) being configured to guarantee a constant stacking pitch between the container (2) and said identical container (2′), when said container is stacked in said identical container, said projecting portions (29) being configured so as to cooperate in abutment with the upper edge (30) of the upper opening (25) of the identical container inside which said container is stacked so as to guarantee said stacking pitch,
• and wherein the second engagement portion (40) of the lid has a skirt (42) that extends over the lower part of the second engagement portion (40) and wherein said outwardly-directed ridge (27) of the container, on the one hand, and the inwardly-directed ridge (41) of the lid, on the other hand, having curved corner sections (28, 43) in the corners (24) where said side walls (20, 21, 22, 23) meet, where at least one of the curved corner sections of the inwardly-directed ridge (41) is provided with a foldable skirt section (44), articulated via a folding region (46) to the upper part of the engagement portion (40) which is able to fold from an engagement position to an outwardly-directed released position such that a central part of said at least one curved corner section of the inwardly-directed ridge (41) is spaced apart by levering from the outwardly-directed ridge (27) of the upper opening (29) and that the engagement between the ridges (27, 41) is thus weakened over said central part
• and wherein said projecting portions (29) are arranged to project outwardly from the corners (24), at least one of the outer ribs (31) extending, at the corners (24), from the bottom end thereof which forms the flat part (32) and at least up to the height of said foldable skirt section (44) when the inwardly-directed ridge (41) is in the engagement position with the outwardly-directed ridge (27) of the container (2).