Abstract: 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.

Abstract: A method for producing a large-capacity, pliable container, includes the steps of a) producing a tubular bellows-type sleeve, b) cutting lateral folding regions of the folded bellows-type sleeve, d) soldering adjacent cutting edges in such a way as to produce a parallelepipedic inner protective envelope having a square cross-section (1b), e) sticking fixing lugs (13) to two opposite lateral fixing faces (14a, 14b) of the folded bellows-type sleeve, (f) 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), step g) soldering 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 the large-capacity pliable container.

Abstract: A method for producing a large-capacity, pliable container, includes the steps of a) producing a tubular bellows-type sleeve, b) cutting lateral folding regions of the folded bellows-type sleeve, d) soldering adjacent cutting edges in such a way as to produce a parallelepipedic inner protective envelope having a square cross-section (1b), e) sticking fixing lugs (13) to two opposite lateral fixing faces (14a, 14b) of the folded bellows-type sleeve, (f) 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), step g) soldering 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 the large-capacity pliable container.