EP0080952A1 - Conteneur souple à double fond plat, son procédé de fabrication - Google Patents

Conteneur souple à double fond plat, son procédé de fabrication Download PDF

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Publication number
EP0080952A1
EP0080952A1 EP82402175A EP82402175A EP0080952A1 EP 0080952 A1 EP0080952 A1 EP 0080952A1 EP 82402175 A EP82402175 A EP 82402175A EP 82402175 A EP82402175 A EP 82402175A EP 0080952 A1 EP0080952 A1 EP 0080952A1
Authority
EP
European Patent Office
Prior art keywords
container
walls
edge
legs
square
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP82402175A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jean-Pierre Desesquelles
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boussac Saint Freres BSF SA
Original Assignee
Boussac Saint Freres BSF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boussac Saint Freres BSF SA filed Critical Boussac Saint Freres BSF SA
Publication of EP0080952A1 publication Critical patent/EP0080952A1/fr
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1675—Lifting fittings
    • B65D88/1681—Flexible, e.g. loops, or reinforcements therefor

Definitions

  • the present invention relates to a flexible container or bag which can contain from 100 kg to several tonnes of bulk materials, in particular fluent, pulverulent or granular materials.
  • This bag can be made of polypropylene strip fabric, coated or uncoated canvas, or any other natural, artificial or synthetic woven fiber.
  • This container can be provided with a waterproof inner bag, for example made of polyethylene.
  • the object of the present invention is to remedy this drawback.
  • a flexible container with a double flat bottom intended for the packaging and transport of bulk materials and preferably provided with an inner bag made of a waterproof material, characterized in that its bottom is formed by a pair of square tabs (4, 5) which extend down the two walls (19, 20) of the container on one half of the lower edge of these walls, these tabs, which were initially opposite, being connected, each by its free lower edge ( D , B) to the half (A, C) devoid of an extension of the lower edge of the opposite wall of the container, this container thus being provided with a double flat and square bottom, formed by the two crossed legs, and the two connecting lines of the legs the walls of the bag being located on the sides of the resulting double bottom, one (15) on an edge of the inner bottom and the other ( 1 4) on an edge of the outer bottom, these two connecting lines having one end located at the same angle (16) from the square bottom.
  • the bottom of the container is no longer crossed in its middle by fragile joining lines, generally seams. These joining lines or these seams are now located laterally on the bottom and, given that In addition, the bottom of the filled container is generally slightly rounded, these junction lines or seams do not rub on the ground or on the underlying bags. They are therefore protected and the strength of the double bottom container according to the invention is increased.
  • connecting lines are preferably seams, such as overlocking and stitching, they can also result from stapling or gluing, or from any other known means allowing the joining of two free edges.
  • Another object of the invention is a method of manufacturing such a container, from a rectangular piece of material of double thickness constituting the two walls of the container.
  • This process is characterized in that a square of material is removed by cutting from a lower angle from the two superimposed walls (19 and 20), the side of which is equal to half the width of the walls, so as to form 'other lower angle of the two superimposed walls, two square legs (4,5), the side of which is equal to half the width of the walls, we remove, if necessary, the lateral connection possibly existing between the two legs, so that these two legs are free, the side edges of the two walls are optionally assembled, above the legs (at 8 and 9), if these side edges are not already connected, the free lower edge is connected ( D) of the tab integral with one of the walls at the lower edge (A) devoid of tab on the opposite wall, and the free lower edge (B) of the tab integral with the other wall is connected to the lower edge (C ) devoid of lug of the wall opposite this other wall, the two lugs being
  • the two superimposed walls are split over a short length (in 6 and 7) (19 and 20), along their longitudinal axis and in the extension of the internal lateral edge of the lugs, with a view to forming, on the lower free edge and devoid of lug of each of the two walls, a flap (C, A) of low width, to which a portion (B, D) of the same small width of the free lower edge of the associated tab will be applied, to facilitate the connection then made between the free lower edge of this tab and the bottom edge devoid of tab of the wall opposite of the container.
  • the double thickness of material constituting the two superimposed walls can be obtained by means of two rectangular strips of material which are superimposed, or by means of a single rectangular strip (1) of material, which is folded in half according to its transverse or longitudinal median axis, or by means of a piece of cylindrical tube of material, which is flattened for cutting generating said legs.
  • the method according to the invention applies, in particular, to the case of flexible containers having at their top two lifting loops separated by a filling slot; this slot results from a notch formed in the middle of the top of the container, this top being closed on either side of this notch, either by connecting means, or because it consists of a fold of a strip of material forming the container; as for the lifting loops, they result, on the one hand, from said central slot and, on the other hand, from the fact that the lateral edges of the two walls of the container have no connection, from the top of the container, on a distance approximately equal to the depth of the filling slot.
  • the double bottom of the container according to the invention is not entirely closed, since the edges of the side walls of the container and the edges of the square bottom are connected only along two sides of the latter. This results in a certain mobility of this bottom, which reduces its fragility under load, but such a bottom is not waterproof; this is however without disadvantage, when the container comprises, as is generally the case, a sealed inner bag. It is however possible, if desired, to secure the side walls of the container and its bottom, along the two other sides of the latter, the bottom of the container then being completely closed.
  • the container is produced from a rectangular strip 1 of fabric, for example polypropylene strips, which has been re p following its median transverse axis 2 (FIG. 2), which has been cut in the middle of the fold line 2 and perpendicular thereto, to form a filling slot. 3, and which has been cut so as to form, in a lower angle of the folded strip 1, two square tabs opposite 4 and 5 , the side of which is equal to half the width of the strip 1, the two halves of the strip folded back on itself representing the two superimposed walls (19 and 20) of the container.
  • the container once again deployed has the appearance shown in FIG. 1.
  • the cutting has been extended a little, in 6 and 7, beyond the legs 4 and 5, which forms, on the lower edges devoid of the legs two walls of the container, a narrow flap, respectively C and A (see Figures 1 and 2), on which will be applied the lower edge of a tab, respectively the edge B of the tab 5 and the edge D of tab 4, for forming the bottom of the container.
  • the double arrows Fi and Fi indicate the directions of approximation of the flap A and of the edge D of the tab 4, on the one hand, and of the flap C and of the edge B of the tab 5 d 'somewhere else.
  • the lateral edges of the latter are closed, generally, by seams, such as the combination of an overlock and a stitching, these seams 8 and 9 being stopped at a certain distance from the upper edge of the container formed in the fold line 2, and this distance being approximately equal to the depth of the filling slot 3, with a view to the formation, at the top of the container, of two lifting loops 10 and 11 (see the Figures 5 to 7).
  • the bottom of the container is formed, generally also, by means of seams, although stapling or gluing may be used.
  • the edge D of the tab 4 is applied to the flap A, by a displacement along the double arrow F 1 , which gives rise to the fold line 17, and it is secured, for example by seams 15, this edge and this flap which, in Figure 5, is hidden behind the flap C.
  • the container then has the appearance shown in FIG. 6.
  • a longitudinal and median fold line has formed on each of the two walls of the container, between the bottom of the filling slot 3 and the internal edge of the flaps A and C , these fold lines being numbered 12, for that which is visible in the drawing, and 13 for that located on the hidden wall (20) of the container, which has taken a generally parallelepiped shape.
  • the edge B of the tab 5 is then applied to the flap C, by a displacement along the double arrow F 2 ' which gives rise to the fold line 18, and this edge and this flap are joined, for example by seams 14.
  • the connecting seams 15 of the edge D and the flap A are only visible in dotted lines in FIG. 8 of the drawing, which shows in perspective the container finished and suspended by its lifting loops 10 and 11 on the hook of one crane.
  • the connecting lines of the double bottom to the walls of the container are therefore the seams 15 for the internal bottom and the seams 14 for the external bottom, these two connecting lines joining at an angle 16 to the square bottom produced.
  • the sides 17 and 18 of the bottom are not closed, but they can be closed, also by seams, if necessary, for example in the absence of the use of an internal waterproof bag.
  • the square bottom obtained can take a slightly domed shape towards the outside, especially when the container is loaded, and that, as a result, the seams for forming the bottom, 14 and 15, do not are not in contact with the ground, and in particular note the seams 14, which are those of the external bottom of the double bottom.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
EP82402175A 1981-12-01 1982-11-30 Conteneur souple à double fond plat, son procédé de fabrication Ceased EP0080952A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8122499A FR2517280A1 (fr) 1981-12-01 1981-12-01 Conteneur souple a double fond plat, son procede de fabrication et application de ce procede
FR8122499 1981-12-01

Publications (1)

Publication Number Publication Date
EP0080952A1 true EP0080952A1 (fr) 1983-06-08

Family

ID=9264554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82402175A Ceased EP0080952A1 (fr) 1981-12-01 1982-11-30 Conteneur souple à double fond plat, son procédé de fabrication

Country Status (2)

Country Link
EP (1) EP0080952A1 (enrdf_load_stackoverflow)
FR (1) FR2517280A1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2049122B1 (es) * 1991-04-23 1994-11-01 Condepols Sa Metodo de fabricacion de un contenedor de material flexible para productos a granel.
ES2051617B1 (es) * 1991-12-30 1996-11-01 Condepols Sa Metodo de fabricacion de un contenedor de material flexible para productos a granel.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026288A1 (en) * 1979-09-28 1981-04-08 Oy W. Rosenlew Ab Flexible container for transport and storage of bulk goods

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026288A1 (en) * 1979-09-28 1981-04-08 Oy W. Rosenlew Ab Flexible container for transport and storage of bulk goods

Also Published As

Publication number Publication date
FR2517280B1 (enrdf_load_stackoverflow) 1985-03-15
FR2517280A1 (fr) 1983-06-03

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19830530

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Effective date: 19850629

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Inventor name: DESESQUELLES, JEAN-PIERRE