EP0701525A1 - Procede pour la fabrication d'un recipient en forme de bloc - Google Patents

Procede pour la fabrication d'un recipient en forme de bloc

Info

Publication number
EP0701525A1
EP0701525A1 EP94917827A EP94917827A EP0701525A1 EP 0701525 A1 EP0701525 A1 EP 0701525A1 EP 94917827 A EP94917827 A EP 94917827A EP 94917827 A EP94917827 A EP 94917827A EP 0701525 A1 EP0701525 A1 EP 0701525A1
Authority
EP
European Patent Office
Prior art keywords
flaps
piece
fold lines
container
another
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.)
Withdrawn
Application number
EP94917827A
Other languages
German (de)
English (en)
Inventor
Hendrik Christiaan Adolf Hoekstra
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.)
Greif International Holding BV
Original Assignee
Koninklijke Emballage Industrie Van Leer BV
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 Koninklijke Emballage Industrie Van Leer BV filed Critical Koninklijke Emballage Industrie Van Leer BV
Publication of EP0701525A1 publication Critical patent/EP0701525A1/fr
Withdrawn legal-status Critical Current

Links

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]
    • B65D88/1675—Lifting fittings
    • B65D88/1681—Flexible, e.g. loops, or reinforcements therefor
    • 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]
    • B65D88/1668—Flexible intermediate bulk containers [FIBC] closures for top or bottom openings

Definitions

  • the invention relates to the production of block- shaped containers for bulk goods.
  • Containers of this type made of pliable material are being used to an ever increasing extent for the transport of bulk goods and can have a capacity of the order of magnitude of one cubic metre; however, larger or smaller capacities are also possible.
  • the stresses in the material from which containers of this type are made can be appreciable, especially when shocks occur during hoisting or when such a container falls to the ground.
  • a problem which arises with the known containers which are produced by means of a sewing process is that shock or impact stresses of this type can result in such high local stresses in the sewn seams that the container rips or bursts open at these points.
  • the holes made during the sewing process constitute a weakness, whilst the relatively thin thread used for sewing exerts a concentrated stress on the pliable material of the container.
  • the containers rapidly give way as a result.
  • the aim of the invention is, therefore, to provide a _container of the abovementioned type with which such a combination of adverse factors does not arise.
  • This aim is achieved by producing the container in accordance with the following steps:
  • the base can be glued in such a way that not a single sown seam has to be used.
  • Glued joins of this type provide a large surface area for transmission of forces and prevent the occurrence of concentrated stresses.
  • a container produced in this way is consequently also well able to withstand shock or impact stresses.
  • the tubular piece of pliable material can be, for example, a circularly woven fabric. Nevertheless it is also possible to use a flat woven fabric which is shaped into a tubular piece by means of one or two glued seams.
  • an emptying opening can also be provided in the base.
  • an emptying opening can also be provided in the base.
  • the region close to the edges and the corners of the emptying opening as defined by the one pair of flaps is strengthened by the material of the other pair of flaps glued on top in this region. Because the latter pair of flaps are provided with cuts, the emptying function can still be achieved.
  • the cut-outs define an essentially rectangular emptying opening and an emptying tube which has a cross-section corresponding to said emptying opening is attached to the container base.
  • the tubular piece At the other end of the tubular piece, eight cuts are made in the lengthwise direction of the tubular piece with, in the peripheral direction of said tubular piece, essentially regular spacings with respect to one another and with respect to said longitudinal fold lines.
  • the cuts define eight flaps of material, of which in each case two adjacent flaps of material are attached to one another by their ends in order to form a total of four carrying loops.
  • the method according to the invention is also suitable for the production of a container which has a top cover.
  • a top cover of this type can be obtained by fixing a separate sheet, having a central fill opening, in the container.
  • the container top cover is -produced separately beforehand, for which operation the following steps can be employed: - double-folding the piece of material for the top cover along a fold line in the widthwise direction thereof, - attaching the opposing, parallel edges of the double-folded piece of material for the top cover to one another, - making pairs of fold lines, each pair starting from the intersection formed by the fold line in the widthwise direction and the longitudinal edges of the piece of material for the top cover, with each fold line at an angle of essentially 45° with respect to the fold line in the widthwise direction,
  • a method of this type is suitable for carrying out by machine. Both the pre-produced container with a base and the pre-produced container top cover can be inserted into one another while folded flat and then attached to one another, which procedure facilitates handling by a machine.
  • a filler pipe can also be fixed to the container top cover in a similar way if: - a cut coincident with the fold line is made in the piece of material for the top cover,
  • a piece of pipe-shaped pliable filler pipe material is inserted, while folded flat, into the piece of material for the top cover, while the latter is folded flat, in such a way that one end of the pipe-shaped piece is located at the cut in the material for the top cover,
  • the pipe-shaped piece is attached to the piece of material for the top cover, around the cut in the latter.
  • Figure 1 shows a perspective view of the tubular piece according to the invention.
  • Figure 2 shows the base section of the tubular piece according to the invention.
  • Figure 3 shows a cross-sectional view of the finished base of the container with an emptying tube.
  • Figure 4 shows a perspective view of a separate emptying tube.
  • Figure 5 shows a partially opened-up perspective view of the finished container according to the invention.
  • Figures 6 a"c show the steps for fitting a container top cover to the top of the container.
  • Figures 7 a"c show the steps in an alternative method for producing the base of the container with an emptying tube.
  • Figure 7 d shows the method for folding the emptying tube in the container base.
  • Figures 8 a"d show the steps for producing a container top cover.
  • Figure 8 e shows the position of the container top cover in the container, which is shown diagrammatically.
  • Figure 9 shows the positions in which container and container top cover are inserted into one another.
  • Figure 10 shows the way in which a carrying loop is made up from two flaps of material.
  • Figures ll a"c show the steps for producing an alternative emptying tube.
  • the tubular piece shown in Figure 1 comprises a pliable material, which can be a so-called banded fabric.
  • a pliable material which can be a so-called banded fabric.
  • a film or a combination of film and banded fabric is also possible.
  • a fabric of this type is generally known and will therefore not be described here. It is, of course, also possible to make the tubular piece of any other arbitrary suitable material which is able to withstand the stresses imposed on the container to be produced therefrom.
  • the tubular piece is obtained by joining -the two opposing edges of a piece of pliable material together along a weld seam 1.
  • Four cuts 2 are then made in one end of the tubular piece thus obtained. Said cuts are regularly spaced.
  • the tubular piece is pressed flat, by which means two fold lines 3 are obtained.
  • the cuts 2 are also equal distances away from said fold lines 3.
  • the four cuts 2 define four flaps of material, two of which are indicated by 4 and two by 5.
  • an opening 6 has been cut out in the flaps of material 4, whilst a cut 7 has been made in the flaps of material 5.
  • Fold lines which run at an angle of 45° with respect to the end of the tubular piece are made from the innermost ends of the cuts. Said fold lines 8 are also made in the lower half of the tubular piece, which is not visible, in such a way that in each case one visible and one non-visible fold line 8 intersect at intersection 9. A peripheral fold line 10. is made through said intersections 9, parallel to the end of the tubular piece.
  • the base of the container is now produced as follows.
  • the trapezium-shaped region 11 of the tubular piece, as delimited by the fold lines 8, the intersections 9 and the flap 5, is folded over along fold line 10.
  • the trapezium-shaped piece 11 comes to lie on that part of the tubular piece located higher up.
  • the situation thus obtained is shown in Figure 2.
  • the trapezium-shaped region 11, which is now no longer visible, is lying on that part of the tubular piece which is located above fold line 10, which is likewise no longer visible.
  • the flaps of material 4 face outwards, whilst the flaps of material 5 have already been folded towards one another, such that their edges 5a just touch, or just fail to touch, one another, with the formation of a more or less narrow slit. In this position, their cuts 7 are a lengthwise extension of one another.
  • the flaps of material 4 can now be folded on top of the flaps of material 5, about a fold line bordering the sides of said flaps of material 5. In this position the edges 4a of the flaps of material 4 likewise -just touch, or just fail to touch, one another.
  • the region of the flaps of material 5 indicated by shading can be coated with adhesive.
  • the flaps of material 4 can, of course, also be coated with adhesive.
  • Outstanding adhesion between flaps of material 5 on the one hand and 4 on the other hand is obtained in this way. With this procedure the central area of the flaps of material 5 remains free.
  • An emptying tube 14 can then also be glued into said emptying opening, as shown in the vertical section in Figure 3 and in perspective in Figure 4.
  • Said emptying tube 14 has four outward-facing flaps 15 at its top, each flap being glued between the flaps of material 4 and 5 of the tubular piece.
  • the emptying tube can be made of circularly woven or flat-woven fabric, the tube shape being obtained in the latter case by means of one or two glued seams. Nevertheless, a tube of another pliable material can also be used, whilst the join can also be obtained in another way, for example by heating.
  • the periphery of the flaps 15 of emptying tube 14 is also shown diagrammatically in Figure 2.
  • Figure 5 shows a perspective view of the finished -container.
  • the base 16 of the container 17 comprises the flaps 5, the non-visible flaps 15 of the emptying tube 14 and the flaps 4.
  • the tongues 13 and the cuts 7, which are an extension of one another, of said flaps 5 are visible.
  • the bulk goods contained in container 17 will push aside the tongues 13 as soon as the emptying tube 14 is unfolded, after which the bulk goods are able to run out.
  • Cuts 23 are made in order to dissipate the stresses in the flaps of material 19. Said cuts 23 are located at that edge of each flap of material 19 which ends up in the centre of the walls of container 17. Similar incisions are not required at the other edges of the flaps of material 19.
  • the container can finally be closed off at the top by a container top cover 22, in which an opening can also be present.
  • a filler tube can be connected at this opening.
  • an emptying tube can be fitted in the container base using the same procedure as that employed for fitting the filler tube in the container top cover 22.
  • the container according to the invention can also be constructed without an -emptying opening. In this case there is no need to make openings 6 in the flaps 4, whilst the cuts 7 in the flaps 5 can also be dispensed with.
  • the flaps 4 and 5 cover one another completely in the situation shown in Figure 2. Consequently, they can be glued to one another over their full surface, as a result of which a very robust and shock-resistant base construction is obtained.
  • FIG. 6 a A container which is folded flat and has its flaps 19 facing outwards is drawn in Figure 6 a .
  • the pliable container top cover at the top of the container, which is shown in Figure 5, is now glued in place in the border region which is defined between said pliable strips of material 19 and the adjoining parts of the trapezium-shaped regions 24.
  • the area coated with adhesive is indicated by 25 in Figure 6 b .
  • Figure 6 C shows how the container top cover is affixed to the area coated with adhesive.
  • the flaps of material 19 can then be shaped in the known manner to give the carrying loops 21, as shown in Figure 5.
  • Figure 7 a shows the base of a container, folded flat. The strips 19 are also shown; the top of the container has not yet been folded up.
  • the flaps 26 of the base 16 have not yet been folded in, although the flaps 27 have. Both flaps 27 have a cut 29.
  • the flaps 26 are glued to flaps 27 .
  • An emptying tube 32 can be glued to the base 16 formed in the way, as shown in Figure 7 b . Said emptying tube is glued in place by means of its flaps 15, analogously to the case of flaps 15 in Figure 4.
  • the emptying trunk of the emptying tube has been folded flat several times, thus assuming the hexagonal shape shown in Figure 7 b .
  • the flaps 26 can then be glued in place, by which means the closed base shown in Figure 7 e is obtained. Region 33 of the slit formed between the flaps 26 is free, that is to say is not attached by adhesive to the other parts of the base. Consequently, the emptying tube remains accessible via -the slit 33 and can be pulled out by pushing the adjacent parts of the flaps of material 26 aside to some extent.
  • the bulk material contained in the finished sack can then run out via the slits 29 (see Figure 7 a ) and the slit formed between the edges of the flaps of material 27 and be unloaded via the tube.
  • the advantage of the construction according to Figure 7 lies in the fact that the emptying tube 32 is now completely stowed away in the base of the container. In view of the various layers folded over one another, the emptying tube remains firmly closed even when the container is completely filled. The bulk material will run out of the container only after the tube 32 has been pulled to the outside via slit 33.
  • Figure 7 d shows the partially folded emptying tube 32, as well as its flaps of material 15, which are glued to the container base.
  • the folded tube of material 32 has been folded up several times in its transverse direction along fold lines 34 and fitted flat to the container base.
  • the flaps of material 26 are then glued to the container base, leaving slit 33 free (see Figure 7 C ).
  • Figure 8 a shows a piece of top cover material 35 folded double in order to form the top cover of the container. Said piece of top cover material is folded onto itself along fold line 36. Fold lines 37, which run perpendicular to fold line 36, and fold lines 38, which are at an angle of 45° with respect to fold lines 37, are also provided.
  • the halves of the piece of top cover material either side of fold line 36 are attached to one another at the short sides 39.
  • a peripheral fold line 40 is also made some distance below the uppermost opening in the piece of top cover material 35.
  • the piece of top cover material 35 can be folded via positions 8 b and 8° into position 8 d .
  • side flaps 41 are formed, which, in the manner shown in Figure 8 , end up -inside the container 47, shown diagrammatically in said figure.
  • the peripheral strip 42 of the container top cover 35, as defined by the peripheral fold line 40, is attached, for example glued, to the inside wall of container 47.
  • the container top cover is further provided with a cross-shaped opening 43, at which an filler tube 44, shown diagrammatically, can be fitted.
  • Figure 9 shows that the container top cover 35 when folded flat can be inserted in the container 47 when this is likewise folded flat.
  • the eight flaps of material 19, only four of which are shown, must be held somewhat apart.
  • the container top cover 35 which is folded flat can then be inserted and, by means of top border 42, glued in place in the regions indicated by shading.
  • An operation of this type can easily be carried out by machine.
  • a filler tube 44 which is folded flat and is provided with a cross-shaped opening 45 can be fitted in the same way inside the container top cover 35 when this is folded flat.
  • the filler tube 44 can be fixed in place by means of the areas indicated by shading, to which, for example, adhesive has been applied.
  • Figure 10 shows how two adjacent flaps of material 19 of the container 47 can be attached to one another.
  • the two flaps of material 19 attached to one another are joined together by those surfaces which initially are on the inside of the container.
  • a somewhat twisted carrying loop 46 is formed, which provides an advantageous transfer of stress to the side wall of the container 47.
  • Figures ll a " c show the way in which an alternative emptying tube can be produced.
  • the pliable tubular piece of material 51 is placed between the pliable halves 52, 53.
  • the piece 51 and the halves 52, 53 are then attached to one another by means of welds 54 and a cut 55 is made in each half 52, 53.
  • the tubular piece 51 is finally unfolded, the halves 52, 53 being laid flat.
  • the emptying tube shown in the final step in Figure 11 is obtained in this way.
  • said emptying tube can be attached to the base, as -shown in Figure 2.
  • the halves 52, 53 are glued in place on the area indicated by shading in Fig. 2.
  • this emptying tube can be attached to the base shown in Figure 7 a .
  • a tube of this type can also be used as a filler tube. In that case it is fitted on the top of the container, for example cover 35 in Figure 8 e .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Making Paper Articles (AREA)

Abstract

Un procédé pour la fabrication d'un récipient en forme de bloc pliable consiste à prendre un morceau de matériau tubulaire pliable, à réaliser quatre encoches (2) à une extrémité dans le sens longitudinal du morceau tubulaire, lesquelles encoches (2) sont situées, dans le sens périphérique dudit morceau tubulaire, à intervalles sensiblement réguliers et définissent quatre rabats de matériau (4, 5); à plier les rabats (4, 5) de manière à ce qu'ils se recouvrent, et à les fixer les uns aux autres en vue de former la base du récipient.
EP94917827A 1993-06-07 1994-06-07 Procede pour la fabrication d'un recipient en forme de bloc Withdrawn EP0701525A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL9300978A NL9300978A (nl) 1993-06-07 1993-06-07 Werkwijze voor het vervaardigen van een blokvormige houder.
NL9300978 1993-06-07
PCT/NL1994/000131 WO1994029189A1 (fr) 1993-06-07 1994-06-07 Procede pour la fabrication d'un recipient en forme de bloc

Publications (1)

Publication Number Publication Date
EP0701525A1 true EP0701525A1 (fr) 1996-03-20

Family

ID=19862498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94917827A Withdrawn EP0701525A1 (fr) 1993-06-07 1994-06-07 Procede pour la fabrication d'un recipient en forme de bloc

Country Status (6)

Country Link
EP (1) EP0701525A1 (fr)
JP (1) JPH08510977A (fr)
FI (1) FI955854A (fr)
NL (1) NL9300978A (fr)
NO (1) NO954940D0 (fr)
WO (1) WO1994029189A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104691980B (zh) * 2015-02-27 2017-05-31 高青澳森特集装箱包装材料有限公司 带缓冲气囊的复合式铁路运输内衬包装袋
US11319144B1 (en) * 2019-08-29 2022-05-03 Ameriglobe, Llc Bulk bag bottom and discharge assembly including a reinforcer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE33526B1 (en) * 1968-08-26 1974-07-24 Wavin Bv Improvements in a method for manufacturing a block bag
DE2840732C2 (de) * 1978-09-19 1983-09-29 Windmöller & Hölscher, 4540 Lengerich Bodendeckblatt zum Verschließen von mit Kreuzböden versehenen Großsäcken
FI57381C (fi) * 1979-09-28 1980-08-11 Rosenlew Ab Oy W Flexibel behaollare foer transport och lagring av massagods
EP0083505A1 (fr) * 1981-12-31 1983-07-13 Super Sack Manufacturing Corporation Récipient pliable avec anses de levage préfabriquées et son procédé de fabrication
NZ205363A (en) * 1982-09-30 1987-04-30 Custom Packaging Syst Large collapsible bag with rectangular spout
US4703517A (en) * 1986-05-22 1987-10-27 Marino Technologies, Inc. Cargo bag with integral lifting loops

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9429189A1 *

Also Published As

Publication number Publication date
NO954940L (no) 1995-12-06
JPH08510977A (ja) 1996-11-19
WO1994029189A1 (fr) 1994-12-22
FI955854A0 (fi) 1995-12-05
NO954940D0 (no) 1995-12-06
FI955854A (fi) 1995-12-05
NL9300978A (nl) 1995-01-02

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