Angular fastening device

Package for the packaging of food products comprising:

• a base (1) and a lid (2), said base and lid being separable to an open condition and including cooperating peripheral edges for contact engagement along spaced corner portions (F1 to F4) thereof to define a closed condition, the peripheral engagement between said base and said lid in said closed condition including openings therebetween to define a plurality of lateral ventilation slots (3) along said peripheral engagement, said lateral slots collectively existing along the major extent of said peripheral engagement, such that the spaced corner portion contact engagements between the peripheral edges of said base and top are collectively limited to a minor portion of their peripheral engagement;
• closing means for effecting closure of the package at the locations of said spaced corner portions characterised in that:
• said closing means includes a groove (11) on said base at the location of each of said corners (F1) to (F4), said groove including an external vertical rim, and then a lower horizontal portion forming a horizontal platform (13) extending towards the center of the package, said platform being limited inwardly by a vertical partition (14) connected to the side wall (15) of said base.