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.

IPC Classes  ?

• B31B 37/00 - Machinery characterised by making envelopes or bags with structural provision at the base for thickness of contents, from webs, e.g. from tubular webs
• B31B 1/16 - Cutting webs to form sheets or blanks
• B31B 1/26 - Folding sheets, blanks, or webs
• B31B 1/74 - Auxiliary operations
• B31B 1/86 - Forming integral handles or mounting separate handles
• B65D 47/06 - Closures with discharging devices other than pumps with pouring spouts or tubesClosures with discharging devices other than pumps with discharge nozzles or passages
• B65D 90/20 - Frames or nets, e.g. for flexible containers

Abstract

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.

IPC Classes  ?

• B65D 88/16 - Large containers flexible

Abstract

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.

IPC Classes  ?

• B65D 88/16 - Large containers flexible

Abstract

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.

IPC Classes  ?

• B31B 1/64 - Uniting opposed surfaces or edges; Taping by applying heat or pressure
• B65D 27/08 - Envelopes or like essentially-rectangular flexible containers for postal or other purposes having no structural provision for thickness of contents with two or more compartments
• B31B 37/00 - Machinery characterised by making envelopes or bags with structural provision at the base for thickness of contents, from webs, e.g. from tubular webs
• B65D 90/04 - Linings
• B65D 90/20 - Frames or nets, e.g. for flexible containers

Abstract

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.

IPC Classes  ?

• B31B 70/26 - Folding sheets, blanks or webs
• B31B 70/60 - Uniting opposed surfaces or edgesTaping
• B65D 88/16 - Large containers flexible

Abstract

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.

IPC Classes  ?

• B31B 39/00 - Machinery characterised by making lined envelopes or bags
• B65D 88/16 - Large containers flexible