Abrégé

The present invention relates to a method for the manufacture of a receptacle (100) consisting of: - using a flat sidewall (Fl) cut from a sheet of raw material, the sidewall (Fl) being defined by a central wall (Pc) surrounded by two polygonal walls (R11, R13) arranged opposite one another, two series of three flaps (Rb1, Rb2 and Rb3), each first flap (Rb1) extending each of the two edges of the first polygonal wall (R11), each third flap (Rb3) extending each of the two edges of the second polygonal wall (R13), each second flap (Rb2) extending each of the two edges of the central wall (Pc) and being arranged between two corresponding flaps (Rb1 and Rb3), - folding the two polygonal walls (R11, R13) and the flaps (Rb) such that the side walls (P11, P12, P13 and P14) of a receptacle (100) are formed, - folding over each series of three flaps (Rb) such that they overlap one another. According to the invention, the method consists of perforating three superimposed tabs (L1, L2, L3) through each series of flaps (Rb), - distancing or bringing together the two opposite polygonal walls (R11, R13) to retain at least one tab (L) at the back of a flap (Rb). Therefore, the method makes it possible to manufacture receptacles without using glue or staples. It is particularly advantageous in the manufacture of food receptacles.

Classes IPC  ?

• B31B 50/28 - Pliage des feuilles, des flans ou des bandes autour de mandrins, p. ex. pour les opérations de fabrication du fond
• B31B 50/73 - Assemblage des surfaces ou des bords opposésCollage par assemblage mécanique de parties incorporées, p. ex. par des langues et des fentes
• B65D 5/26 - Réceptacles de section transversale polygonale rigides ou semi-rigides, p. ex. boîtes, cartons ou plateaux, formés en pliant ou montant un ou plusieurs flans de papier en repliant les parties reliées à un panneau central sur chaque côté pour former le corps du réceptacle, p. ex. en forme de plateau avec prolongements des côtés opposés s'emboîtant pour se trouver contre les autres côtés