Abrégé

A method for manufacturing a flexible container including a body, a base including an emptying spout and a cover including a filling spout, includes: cutting, from a sheet of flexible material, four main panels of the body and the base and four cover panels, each main panel having a square or rectangular shape having four sides, the bottom side being extended by an approximately trapezoidal extension, whose end towards the bottom is extended by a tab, the extension and tab forming the base and emptying spout, each cover panel having a substantially trapezoidal shape with a base towards the bottom and whose end towards the top is extended by a tongue forming the filling spout; forming a fold in each main panel along the top side; fixing the fold to form at least one loop per main panel; assembling and securing together the four main panels and four cover panels.

Classes IPC  ?

• B31B 37/00 - Mécanismes caractérisés par le fait que les enveloppes ou sacs fabriqués comportent un fond configuré spécialement pour tenir compte de l'épaisseur du contenu, et sont obtenus à partir de bandes, p.ex. à partir de bandes tubulaires
• B31B 1/16 - Découpage des bandes pour former des feuilles ou des flans
• B31B 1/26 - Pliage des feuilles, flans ou bandes
• B31B 1/74 - Opérations auxiliaires
• B31B 1/86 - Formation de poignées incorporées ou montage de poignées séparées
• B65D 47/06 - Fermetures avec dispositifs de décharge autres que des pompes avec goulottes ou tubes de déversementFermetures avec dispositifs de décharge autres que des pompes avec tuyères ou passages pour la décharge
• B65D 90/20 - Cadres ou filets, p. ex. pour réceptacles souples

Abrégé

The invention relates to a method for manufacturing a large-capacity flexible container comprising a body, a base comprising an emptying spout and a cover comprising a filling spout, said method consisting in cutting, from a sheet of flexible material, four main panels (1) of the body and the base and four cover panels (2), each of the main panels having in part a square or rectangular shape (3) having four sides, the bottom side being extended by an approximately trapezoidal extension (4), the end of which towards the bottom is extended by a tab (5), the extension and the tab being intended to form the base and the emptying spout of the container, each of the cover panels having in part a substantially trapezoidal shape (9) with a base towards the bottom and the end of which towards the top is extended by a tongue (10), the tongue being intended to form the filling spout, in forming a fold (6) in each of the main panels along the top side, in fixing said fold in order to form at least one loop per main panel, in assembling and securing together the four main panels and the four cover panels, the folds being disposed on the outside of the container, the base of each cover panel being joined to the top side of the corresponding main panel, the main panels being joined together along their lateral sides and their corresponding extensions, the corresponding lateral sides of the cover panels being joined together, the top ends of the tongues being left free in order to form an upper opening of the filling spout which is substantially square.

Classes IPC  ?

• B65D 88/16 - Grands réceptacles souples

Abrégé

b), and a step B) of assembling the inner protective envelope having a rectangular cross-section (1) with the outer envelope in order to form the large-capacity pliable container.

Classes IPC  ?

• B31B 1/64 - Assemblage des surfaces ou des bords opposés; Collage par chauffage ou pression
• B65D 27/08 - Enveloppes ou réceptacles flexibles similaires essentiellement rectangulaires, pour la poste ou d'autres emplois, dont la structure ne prévoit pas un contenu en épaisseur avec plusieurs compartiments
• B31B 37/00 - Mécanismes caractérisés par le fait que les enveloppes ou sacs fabriqués comportent un fond configuré spécialement pour tenir compte de l'épaisseur du contenu, et sont obtenus à partir de bandes, p.ex. à partir de bandes tubulaires
• B65D 90/04 - Garnitures internes
• B65D 90/20 - Cadres ou filets, p. ex. pour réceptacles souples

Abrégé

The invention relates to a method for producing a large-capacity, pliable container, comprising a step of a) producing a tubular bellow-type sleeve, a step b) of cutting the tubular bellow-type sleeve, a step c) of cutting lateral folding regions of the folded bellow-type sleeve, a step d) of soldering adjacent cutting edges in such a way as to produce a parallelepipedic inner protective envelope having a square cross-section (1b), and a step e) of sticking fixing lugs (13) to two lateral fixing faces (14a, 14b) located opposite the folded bellow-type sleeve. According to the invention, the method comprises a step f) of applying a tractive force to the fixing lugs (13) in order to deform, by stretching, the parallelepipedic inner protective envelope having a square cross-section, and to obtain a parallelepipedic inner protective envelope having a rectangular cross-section (1), a step g) of soldering the outer lateral pockets (17a, 17b), a step h) of cutting the outer lateral pockets (17a, 17b), and a step B) of assembling the inner protective envelope having a rectangular cross-section (1) with the outer envelope in order to form said large-capacity, pliable container.

Classes IPC  ?

• B31B 39/00 - Mécanismes caractérisés par le fait que les enveloppes ou sacs fabriqués sont doublés
• B65D 88/16 - Grands réceptacles souples