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EP0264606B1 - Sac composé d'un sac extérieur et d'un sac intérieur - Google Patents

Sac composé d'un sac extérieur et d'un sac intérieur Download PDF

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Publication number
EP0264606B1
EP0264606B1 EP87113175A EP87113175A EP0264606B1 EP 0264606 B1 EP0264606 B1 EP 0264606B1 EP 87113175 A EP87113175 A EP 87113175A EP 87113175 A EP87113175 A EP 87113175A EP 0264606 B1 EP0264606 B1 EP 0264606B1
Authority
EP
European Patent Office
Prior art keywords
bag
combination
hole
inner bag
opening
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.)
Expired - Lifetime
Application number
EP87113175A
Other languages
German (de)
English (en)
Other versions
EP0264606A3 (en
EP0264606A2 (fr
Inventor
Rolf Sander
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.)
Wilhelmstal-Werke Papiersackfabriken GmbH
Original Assignee
Wilhelmstal-Werke Papiersackfabriken GmbH
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
Priority claimed from DE19863635809 external-priority patent/DE3635809A1/de
Priority claimed from DE19873713001 external-priority patent/DE3713001A1/de
Application filed by Wilhelmstal-Werke Papiersackfabriken GmbH filed Critical Wilhelmstal-Werke Papiersackfabriken GmbH
Priority to AT87113175T priority Critical patent/ATE49562T1/de
Publication of EP0264606A2 publication Critical patent/EP0264606A2/fr
Publication of EP0264606A3 publication Critical patent/EP0264606A3/de
Application granted granted Critical
Publication of EP0264606B1 publication Critical patent/EP0264606B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5877—Non-integral spouts connected to a planar surface of the package wall
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another

Definitions

  • the invention relates to a combination bag of the type specified in the preamble of claim 1 (known from DE-U 8 511 435.9). Difficulties arise when filling a liquid or pasty material into such a combination bag and then sealing the inner bag in a liquid-tight manner.
  • the invention has also recognized that it is advantageous to tightly close the inner sack again after a partial removal of the liquid or pasty material in order to be able to keep the remaining contents in a fresh state for a long time. This could not be solved satisfactorily in the known combination sacks and resulted in the residual goods in the combination sack becoming spoiled.
  • the invention has for its object to produce a simple combination bag inexpensively, which on the one hand can be filled without problems and on the other hand allows the contents to be removed in portions. This is achieved according to the invention by the measures specified in the characterizing part of claim 1, which have the following meaning:
  • the inner and outer sacks can be generated fully automatically, the cutting out of the holes and the introduction of the openings in the two sack layers being easily integrated into the manufacturing process according to claim 22.
  • the flange of the grommet can be retrofitted and connected to the inner bag in a liquid-tight manner, which can be done by welding or gluing.
  • the invention has created a structure for holding liquids or pasty masses, which has a very low empty weight and is space-saving. When filled, it can take up considerable quantities of filling material, which can be conveniently filled into the inner sack when the closure is removed, the closure applied protecting the filled contents.
  • the invention thus gave the combination bag the new function of acting like a "bottle” that can be closed again and again.
  • the inner bag made of film material hermetically seals the filled goods to the outside and the relatively inextensible material of the outer bag, such as paper layers, limits the elasticity of the film material from the inner bag and protects the inner bag from damage during transport, storage and use during goods removal.
  • the goods can be removed in small portions via the spout, whereby the inner bag can be sealed airtight again by applying the closure to the spout and the remaining goods can be kept fresh over longer periods of time.
  • the invention is also environmentally friendly because the material of the inner bag and the spout, which is difficult to rot, forms a coherent structural unit which can be easily separated from the easily decomposable material of the outer bag. For this purpose, a tear thread has proven itself, which should be arranged according to claim 15.
  • the invention therefore proposes to provide the inner bag according to claim 3 with paired longitudinal seams and intervening perforations, whereby the inner bag is divided into part inner bags separable from each other.
  • These partial inner bags are initially connected and can be produced together as an overall inner bag, to which a one-piece outer bag is assigned.
  • the attachment of the longitudinal seam pairs with the intermediate dividing line and the longitudinal Z-fold of the inner bag according to claim 3 can be easily carried out with the available bag making machines. This enables inexpensive production of the combination sack from uniform web materials.
  • the manufacturing machines can be operated at high working speeds and thus enable an unrivaled, inexpensive manufacture of liquid-absorbing containers.
  • the self-contained partial sacks can be emptied independently of one another after they have been filled. After the outer sack has been torn open, one of the partial sacks along the dividing line can be separated from the other partial inner sacks and handled for itself. Because of the smaller volume, the entire contents of the inner bag can be removed and in this case a detachable closure is not absolutely necessary.
  • Each inner sack has its own opening with the spout attached to it. It is therefore also possible to fill each partial inner sack of a combination sack with a different filling material. By dyeing and / or printing each inner bag can indicate the different filling contents. All of this can be done easily in the fully automatic production of the combination bag.
  • the combination sack 10 shown in FIG. 1 consists of an inner sack 11 made of liquid-tight but usually also stretchable film material and divided into two partial inner sacks 11 ′, 11 ′′ and an outer sack 20 made of a relatively inextensible material such as multilayer paper.
  • Such a combination bag can be produced continuously, fully automatically, for which the following process steps, which can be seen from the following figures, result.
  • a film produced by coextrusion between a vapor-coated polyester film and a polyethylene film is suitable as film material for the inner bag 11, where the two film materials are connected to one another over their entire surface.
  • films can be produced seamlessly in tubular form, in the present case an initially single-layer web is assumed, which, as shown in FIG. 2, is doubled according to its one longitudinal edge 13 and provided with a longitudinal seam 14 on its opposite longitudinal edge 13 '. 2, the hose is provided, preferably at the same time, with two further longitudinal seams 16, 16 ', a tearable weakening line 17 being arranged between these two seams 16, 16' simultaneously or in a later process step, which in the present case consists of a perforation.
  • a continuous film tube prepared in this way is provided at intervals which correspond to the later desired bag length with two adjacent transverse seams 18, of which only the lower transverse seam 18 is shown in FIG. 2, which form the upper end of the later inner bag 11 should.
  • the non-recognizable further transverse seam forms the lower end of a tube section to be produced from this film tube in a later process stage, which is still to be mentioned.
  • the film tube is now longitudinally folded in the area of the middle zone 15 mentioned and thereby creates a continuous Z-fold 19 with the two folded edges 12, 12 'shown in FIGS. 3 and 4.
  • the originally large width of the film tube is shortened by the length of the middle Z-fold leg, as can be seen from a comparison between FIGS. 2 and 3.
  • the completed weld seams 14, 16, 16 ', 18 ensure a liquid-tight connection.
  • the film tube is divided into the already mentioned two partial inner bags 11', 11 "according to FIG. 2, which can later be separated from one another by tearing along the perforation 17.
  • the two partial inner bags 11 'hang , 11 "" as a whole in the inner bag 11 and are handled together when the combination bag 10 is in position.
  • the inner bag 11 prepared according to FIGS. 3 and 4 the generally multilayered sheet of paper or the like used to produce the later outer bag 20, is placed around and connected in turn at the overlapping points, whereby a first Continuous envelope tube is formed, which is shown in the breakout in Fig. 5.
  • the inner tube 11 and the enveloping tube 20 thus form a double-walled combination tube, which is expediently fixed to one another by gluing or the like at the points shown in FIGS. 5 and 6, and thereby forms a double-walled combination tube connected in places.
  • a group 21 of the stitching points lies on a line 23 shown in dash-dot lines in FIG. 5, which determines a particular folding point to be described in more detail in the later formation of the cruciform bottom.
  • a hole 24 or 24' in the jacket tube 20 and on the other hand an opening 25, 25 'in the film tube 11 are expediently common at a defined distance, which will be described later incised.
  • each hole and opening 24, 24 ', 25 25' are congruent with each other and are created by punching out a half-hole on the two longitudinal edges 13, 13 '.
  • the envelope tube 20 is provided with a split slit 26, 27 or 26 ', 27'. This consists in each case of a longitudinal slot 27, 27 ', which extends from the respective hole 24, 24' and extends along the longitudinal edge 13, 13 ', and a transverse slot 27, 27' crossing it.
  • the aforementioned further stitching points 23 between the two hoses 11, 20 are in the vicinity of the hole 24, 24 'and the slits 26, 26', 27, 27 '.
  • a continuous combination hose 11, 20 obtained in this way is cut through between the two above-mentioned transverse seams 18, as a result of which the sections forming a single combination bag are obtained, the upper region of which is shown in FIG. 5.
  • the later opening of the sack opening 28 is created at the interface of the film tube 11 is formed by the two end seams 18 as a closed inner bag 11, but the envelope tube 20 must first be subjected to a bottom formation. In the present case, this is formed by a cross-bottom fold 30, the individual phases of which are shown in more detail in the following FIGS. 6 to 8 with reference to the upper end of the bag, which is also shown in FIG. 1.
  • the two opposite walls of the casing tube 20 are spread in the end zone 29 shown in FIG. 5, which lies above the dash-dotted stitching line 23.
  • the edge zones of the inner bag 11 lying outside the Z fold 19 stretch out between the stitches 21.
  • the central zone with the Z-fold 19, on the other hand, remains unspread, although stitching with respect to the walls of the outer tube 20 could also be provided for its order.
  • This spreading which is illustrated by the arrows 31, causes the corner folds 32 lying on the two longitudinal edges 13, 13 'to fold in, which have a triangular outline according to FIG. 6.
  • the wall areas of the inner bag 11 located underneath are also folded during this folding of the corner folds 32.
  • this area there is a multilayer, orderly wall structure, where the inner bag 11 with its openings 25, 25 'also has a defined, aligned position with the holes 24, 24' of the casing tube 20 and its slits 26, 26 ', 27, 27 'occupies.
  • the inner sack is also folded down along the fold line 33 indicated by dashed lines in FIG. 6 in the form of the tip 34 also indicated by dashed lines.
  • a support sheet 34 made of tear-resistant material is placed on the spread-out floor, which, in particular in its corner regions, is provided with laterally useful hanging holes 35.
  • the support sheet 34 is dimensioned such that after its attachment, its edges end approximately with the stitching lines 23 explained above in FIGS. 5 and 6.
  • adhesive connections between the outer bag 20 and the carrier sheet 34 can also be provided in FIG. 7.
  • the two side flaps 36 are folded over at the mentioned stitching lines 23, which are formed by the end zones 29 of the envelope tube 20, which can be seen from FIGS. 5 and 6.
  • the two side flaps 36 preferably overlap one another and can be connected both to one another and, in particular, to the underlying support sheet 34 by introducing adhesives.
  • the support sheet 34 is arranged above the corner inserts 32 but under the side flaps 36 and is enclosed by these on both sides.
  • the outer bag has thus come into being from the enveloping tube 20. This can then, according to FIG. 9, be reinforced on the bottom side with a cover sheet 37.
  • the cover sheet 37 is shorter in length than the underlying support sheet 34, which is why the hanging holes 35 protrude from both ends under the cover sheet 37.
  • the hanging holes 35 serve as a point of attack for a hanging device, not shown, in which the finished combination bag 10 is hung for filling.
  • the finished combination sack 10 is in fact provided with two spouts 40, 40 'according to FIGS. 1 and 9, the assembly of which can be carried out, for example, in the manner shown in FIG. 10.
  • the spout 40 is formed in one piece from plastic and, as shown in FIG. 1, consists of a tube piece 41 with a flange 42 located at the inner end and running vertically to the tube axis.
  • the tube opening 43 can be closed by a cover 44 shown in FIG. 1, whereby any connection, e.g. can be selected as a bayonet connection.
  • the grommets 40, 40 ' can be coupled in before or after the introduction of the mentioned support sheet 34, in the manner shown in FIG. 10, where the support sheet is not shown for reasons of clarity.
  • the transverse slot 27 has a sufficient transverse length to insert the pipe flange 41 of the nozzle 40 in the sense of the arrow 45 shown in FIG.
  • tongues 38 briefly bend due to the protruding pipe section 41, which tongues arise due to the edge regions of the outer bag walls remaining unattached in the area of the slots 26, 27.
  • the insertion 45 is ended when the pipe section 41 comes into alignment with the associated opening 25 of the relevant partial inner bag 11 ′′.
  • the edge zone 39 indicated by the dot-dash line in FIG. 10 around the opening 25 is used for fastening the spout flange 42, for which one The pipe section 41 projects through the hole 24 in the outer bag 20, as can be seen from the top view of FIG. 9.
  • the assembled spout 40 is finally located in that triangular part 46 of the bottom of the cross that comes to rest on the narrow side 47 of the filled combination bag 10 shown in FIG. 1.
  • the fold line 33 already mentioned in connection with FIG. 6 forms the triangular base at the edge of the sack between the fully folded cross bottom 30 and the narrow side 47 of the sack mentioned Corner folds 32, which appear on the narrow side 47 of the bag when the bag is full, as shown in FIG. 1.
  • This triangular part 46 can also be pressed in somewhat when the sack is filled, which is why the piece of pipe equipped with the cover 44 or 44 'is below the outline of the cuboid combination sack 10.
  • a spout 49 with the combination bag 10 also in a different way could be done.
  • Such a buttoning movement could also take place through the opening 25 or 25 'in the partial inner bag 11' or 11 ", as a result of which the flange comes to rest on the inside of the wall of the inner bag and thus experiences a more favorable connection with the inner bag.
  • This buttoning movement could be done 10 in order to finally also pass the flange 42 through the inner bag opening 25.
  • the coupling of the connecting piece could also be carried out in other phases during the cross-bottom folding.
  • the combination bag 10 can be filled comfortably using the hanging holes 35 on its carrier sheet 34.
  • the empty sack which is not stable in itself, is thereby given an upright position and can be filled like a bottle from above via the two spouts 40, 40 'with the lids 44, 44' removed.
  • each partial inner bag 11 ', 11 is fed separately, and if necessary, different filling substances could also be used.
  • the Z-fold 19 opens by itself, but the two partial inner bags 11', 11" remain over the one that has not yet been separated Perforation 17 joined together.
  • the two partial films of the two partial inner bags 11 ', 11 "expand in the formats of the outer bag 20 which define a cuboid shape. If possible, both partial inner bags 11', 11" will be filled together, but independent filling is readily possible.
  • the covers 44, 44 ' are placed on the spouts 40, 40'.
  • the combination bag 10 is transported as a whole.
  • one or both of the partial inner bags 11 ', 11 can be emptied entirely or partially by removing the respective lid 44, 44'. This can be done without having to remove the partial inner bags 11 ', 11" from the outer bag 20.
  • the invention can, of course, also be applied to three or more inner sacks instead of just two inner sacks, for this purpose it is only necessary to use the longitudinal zones 15 shown in FIG. 2 with the respective longitudinal seams 16, 16 'and, if appropriate, the perforations 17 to be provided in a corresponding number.

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  • Mechanical Engineering (AREA)
  • Packages (AREA)
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Claims (26)

1. Sac (10), composé d'un sac extérieur (20) et d'un sac intérieur (11), en matière formée d'un film, réalisé sous la forme d'un sac plat fermé aux deux extrémités et destiné à recevoir un produit liquide ou pâteux, au moins l'une des extrémités fermées du sac intérieur (11) étant pliée dans le fond (30) du sac extérieur (20), en même temps que ce fond, et fixée sur celui-ci, caractérise en ce que, dans la zone de son fond (30) ou de ses parties adjacentes (46), le sac extérieur (20) comporte une découpe formant trou (24) à laquelle sont associés une ouverture (25), située dans la zone extrême du sac intérieur (11), et un bec verseur (40), en ce que ce dernier (40) est constitué d'un tronçon de tube (41) comportant, à une extrémité, une fermeture (44), notamment amovible, et, à l'autre extrémité de préférence, une collerette (42), en ce que la collerette (42) du bec verseur est fixée d'une manière étanche aux liquides sur le sac intérieur (11), autour de son ouverture (25), et en ce que la fermeture (44) du bec verseur est accessible à travers la découpe formant trou (24) du sac extérieur (20).
2. Sac composé (10) suivant la revendication 1, dont le sac extérieur (20) comporte un pliage de fond en croix (30), caractérise en ce que la découpe formant trou (24) est disposée dans l'extrémité en triangle (46), appartenant à la partie (32) pliée formant le coin du fond, qui vient s'appuyer sur le petit côté (47) du sac combiné (10) lorsque celui-ci est rempli et dont la base du triangle constitue l'arête (33) réunissant le fond en croix (30) et le petit côté (47) du sac combiné (10).
3. Sac composé suivant la revendication 1 ou 2, caractérisé en ce que le sac intérieur (11) comporte au moins une paire de jonctions soudées longitudinales (16, 16') qui relient les deux épaisseurs du sac intérieur et s'étendent d'une extrémité à l'autre suivant la direction longitudinale du sac et entre lesquelles il est prévu, dans les deux épaisseurs du sac intérieur, une ligne d'affaiblissement (17), déchirable, telle qu'une ligne de perforations, qui divise le sac intérieur (11) en deux sacs intérieurs partiels (11', 11") qui, bien, qu'étant initialement attenants, peuvent être séparés l'un de l'autre, en ce que, lorsque le sac composé (10) est à plat et le sac intérieur (11) vide, ce dernier est disposé de façon à former, avec sa zone (15) comprenant la paire de jonctions soudées longitudinales (16, 16') et la ligne séparatrice (17) se trouvant entre les deux, un repli en Z (19) qui s'étend longitudinalement d'une extrémité à l'autre, et en ce que chaque sac intérieur partiel (11', 11 ",) comporte sa propre ouverture (25, 25') sur laquelle est fixé un bec verseur (40, 40'), tandis que le sac extérieur (20) possède un nombre correspondant de découpes formant trou (24, 24') et destinées aux différents becs verseurs (40, 40').
4. Sac composé suivant une ou plusieurs des revendications 1 à 3, caractérisé en ce que la collerette (42) du bec verseur (40, 40'), qui est réalisé d'une seule pièce en matière plastique, est soudée sur le bord entourant l'ouverture (25, 25') du sac intérieur (11).
5. Sac composé suivant une ou plusieurs des revendications 1 à 4, caractérisé en que que la fixation de la collerette (42) s'effectue sur la surface intérieure de la paroi perforée du sac intérieur (11).
6. Sac composé suivant une ou plusieurs des revendications 1 à 5, caractérisé en ce que la collerette (42) est reliée à la surface extérieure de la paroi perforée du sac intérieur (11).
7. Sac composé suivant une ou plusieurs des revendications 1 à 6, comprenant des moyens de jonction (21) réalisés, par paires et suivant des lignes (23), entre les deux parois du sac intérieur (11), d' une part, et le sac extérieur (20), d'autre part, dans la zone des arêtes de pliage (23) des deux rabats latéraux (36) du pliage de fond en croix (30), de façon que, lors de la formation de la partie pliée de coin (32) du fond en croix dans le sac extérieur (20), les deux parois du sac intérieur (11) qui sont réunies par une jonction soudée transversale (18) s'écartent l'une de l'autre entre ces moyens de jonction (21), caractérisé en ce que l'ouverture (25, 25') du sac intérieur (11) et le trou (24, 24') du sac extérieur (20) sont réalisés chacun par le découpage d'un trou semicirculaire dans la zone de l'une des arêtes de pliage longitudinal (13) des deux couches du tube souple formant respectivement les sacs intérieur et extérieur (11, 20) disposés à plat, le trou (24, 24') du sac extérieur (20) étant disposé dans la zone de la partie pliée de coin (32) (voir figure 5).
8. Sac composé suivant la revendication 7, caractérise en ce que l'ouverture (25, 25') du sac intérieur (11) est découpée, de façon à se superposer au trou (2', 24'), sur la ou les arêtes de pliage longitudinal (13, 13') du sac composé (10) (voir figure 5).
9. Sac composé suivant une ou plusieurs des revendications 1 à 8, caractérisé en ce qu'à l'endroit de son trou (24, 24'), le sac extérieur (20) est de de fentes (26, 27; 26', 27') permettant d'introduire ultérieurement la collerette (42) du bec verseur (40, 40').
10. Sac composé suivant la revendication 9, caractérisé en ce que les fentes consistent en une fente longitudinale (27, 27'), s'étendant suivant la direction longitudinale du sac et débouchant dans le trou (24, 24') du sac extérieur (20), et en une fente transversale (26, 26') croisant la fente longitudinale.
11. Sac composé suivant la revendication 10, caractérise en ce que la fente longitudinale (27, 27') s'étend jusqu'à l'arête (28) de l'ouverture du sac extérieur (20) (voir figure 5).
12. Sac composé suivant une ou plusieurs des revendications 1 à 11, caractérisé en ce que, au voisinage de son trou (24, 24') et éventuellement de ses fentes (26, 27; 26, 27'), la partie pliée de coin (32) du sac extérieur (20) est reliée aux parties de paroi du sac intérieur (11) situées en-dessous par d'autres emplacements de jonction (22) (voir figure 5).
13. Sac composé suivant une ou plusieurs des revendications 1 à 12, caractérisé en ce que le sac extérieur (20) est muni d'un fil de déchirage (48) qui, une fois qu'on l'a arraché, rend accessibles les sacs intérieurs partiels (11,11') situés dans le sac extérieur (20).
14. Sac composé suivant la revendication 13, caractérisé en ce que le fil de déchirage (48) est disposé dans la zone de fond (30) du sac composé (10).
15. Sac composé suivant la revendication 14, caractérisé en ce que le fil de déchirage (48) est disposé dans la zone de fond (30) de celle des extrémités du sac qui est pourvue des becs verseurs (40, 40').
16. Sac composé suivant une ou plusieurs des revendications 1 à 15, caractérisé en ce qu'à son extrémité qui est pourvue des becs verseurs (40, 40'), le sac composé (10) comporte des éléments de support (34, 35) qui permettent de suspendre le sac composé (10) à un dispositif lorsqu'on le remplit.
17. Sac composé suivant la revendication 16, caractérisé en ce que les éléments de support (35) sont situés sur une feuille porteuse (34) qui est fixée à l'extrémité du sac.
18. Sac composé suivant la revendication 17, caractérisé en ce que la feuille porteuse (34) est pliée dans le fond en croix (30), en même temps que celui-ci, et lui est collée, dans la zone de ce fond en croix (30) dans laquelle sont disposés les becs verseurs (40, 40') prévus pour les sacs intérieurs partiels (11, 11') .
19. Sac composé suivant la revendication 18, caractérisé en ce que, dans le cas d'un pliage de fond en croix (30), la feuille porteuse (34) est disposée au-dessus des parties pliées de coin (32), mais au-dessous des rabats lateraux (36) et déborde des deux côtés par ses extrémités, en comportant dans ces extrémités les éléments de support (35) prévus pour le dispositif de suspension.
20. Sac composé suivant une ou plusieurs des revendications 16 à 19, caractérise en ce que les éléments de support consistent en des trous de suspension (35) destinés à des crochets ou éléments analogues d'un dispositif de suspension.
21. Sac composé suivant une ou plusieurs des revendications 1 à 20, caractérise en ce qu'une feuille de renfort (37) est fixée par-dessus le fond en croix (30) pourvu de la feuille porteuse (34).
22. Procédé de réalisation d'un sac composé (10) suivant une ou plusieurs des revendications 1 à 21, ce sac comprenant un tube de film souple (11) continu et à plat, comportant initialement deux jonctions soudées transversales (18) qui sont situées l'une à côté de l'autre à une distance correspondant à la longueur finale voulue du sac intérieur et dont l'une forme son extrémité supérieure finale fermée et l'autre son extrémité inférieure, procédé selon lequel on applique, autour de ce tube de film souple (11) divisé et en les faisant se recouvrir l'une l'autre, les nappes servant à former le sac extérieur qu'on réunit ensuite entre elles dans leur zone de recouvrement en un tube souple formant enveloppe (20), le tube de film souple (11) faisant l'objet d'une jonction fixe, par endroits (21, 22), sur les zones (29) du tube souple formant enveloppe (20) qui servent ultérieurement pour le pliage de fond en croix (30), puis on découpe ensemble, entre les jonctions soudées transversales (18) situées l'une à côté de l'autre, les deux nappes doubles, disposées l'une au-dessus de l'autre, du tube (10) composé du tube de film souple (11) et du tube souple formant enveloppe (20), de façon à former des sections de tube souple isolées et à plat, et on plie enfin le tube de film souple (11), fermé aux deux extrémités, dans le tube souple formant enveloppe (20), en même temps que celui-ci, en écartant (flèche 31) et pliant les parties pliées de coin (32) et les rabats latéraux (36) du pliage de fond en croix (30), à la suite de quoi on replie les rabats latéraux (36) et les joint l'un à l'autre, éventuellement en utilisant une feuille spéciale de recouvrement (37), ce procédé étant caractérisé en ce que, avant le pliage de fond en croix (30), on découpe au moins une ouverture (25, 25') dans l'extrémité (29) du tube de film souple (11) déterminée par la jonction soudée transversale (18), ainsi qu'un trou (24, 24') dans le tube souple formant enveloppe (20), ce trou étant réalisé en correspondance avec l'ouverture, et en ce que, après le pliage de fond en croix (30), on emboîte la collerette (42) d'un bec verseur (40, 40') dans le trou (24, 24') et éventuellement dans l'ouverture (25, 25') et on la fixe à la paroi du tube de film souple (11) sur le bord de l'ouverture (25, 25').
23. Procédé suivant la revendication 22, caractérise en ce qu'on découpe en même temps, et de façon qu'ils soient alignés l'un au-dessous de l'autre, le trou (24, 24') du tube souple formant enveloppe (20) et l'ouverture (25, 25') du tube de film souple (11) (voir figure 5).
24. Procédé suivant la revendication 23, caractérisé en ce qu'on exécute le découpage commun du trou (24, 24') et de l'ouverture (25, 25') au moins dans la zone de l'une des arêtes de pliage longitudinal (13) du tube composé lorsque celui-ci est à plat et non encore coupe à longueur.
25. Procédé suivant une ou plusieurs des revendications 22 à 24, caractérise en ce que, avant le pliage de fond en croix (30), on découpe, dans la nappe du tube souple formant enveloppe (20), au moins une fente (26, 27; 26, 27') qui débouche dans le trou (24, 24, ).
26. Procédé suivant une ou plusieurs des revendications 19 à 22, caractérisé en ce qu'au voisinage de son trou (24, 24') et éventuellement de ses fentes (26, 27; 26', 27'), on réunit le tube souple formant enveloppe (20) au tube de film souple (11) de façon à former une paroi à plusieurs couches du sac composé, puis on soumet cette paroi à plusieurs couches au pliage de fond en croix (30).
EP87113175A 1986-10-22 1987-09-09 Sac composé d'un sac extérieur et d'un sac intérieur Expired - Lifetime EP0264606B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87113175T ATE49562T1 (de) 1986-10-22 1987-09-09 Kombinationssack aus einem aussen-und innensack.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19863635809 DE3635809A1 (de) 1986-10-22 1986-10-22 Kreuzboden-kombinationssack und verfahren zu dessen herstellung
DE3635809 1986-10-22
DE19873713001 DE3713001A1 (de) 1987-04-16 1987-04-16 Kombinationssack
DE3713001 1987-04-16

Publications (3)

Publication Number Publication Date
EP0264606A2 EP0264606A2 (fr) 1988-04-27
EP0264606A3 EP0264606A3 (en) 1989-02-01
EP0264606B1 true EP0264606B1 (fr) 1990-01-17

Family

ID=25848648

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87113175A Expired - Lifetime EP0264606B1 (fr) 1986-10-22 1987-09-09 Sac composé d'un sac extérieur et d'un sac intérieur

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Country Link
EP (1) EP0264606B1 (fr)
DE (1) DE3761425D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0438995A1 (fr) * 1990-01-26 1991-07-31 Nomet Management Services B.V. Emballage pour produits liquides ou pulvérulents
BE1004257A5 (fr) * 1991-07-25 1992-10-20 Incoplas S A Emballage gerbable pour produits liquides ou pulverulents, a goulot fixe.
US5170911A (en) * 1990-02-23 1992-12-15 S.A. Incoplas N.V. Packaging for liquid or pulverulent products
WO2003031281A1 (fr) * 2001-10-10 2003-04-17 Carter Holt Harvey Limited Sac

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007003226A1 (de) * 2007-01-22 2008-09-11 Mars Inc. Verpackung für Schüttgut
DE102017004268B4 (de) * 2017-05-03 2019-05-16 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Mehrlagiger Sack

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122297A (en) * 1961-10-23 1964-02-25 Union Carbide Corp Multi-ply liner bags
US3365116A (en) * 1967-04-27 1968-01-23 Bemis Co Inc Multi-ply bag
DE8511435U1 (de) * 1985-04-17 1986-05-15 Carl Edelmann Gmbh, 7920 Heidenheim Formstabile Innenbeutelpackung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0438995A1 (fr) * 1990-01-26 1991-07-31 Nomet Management Services B.V. Emballage pour produits liquides ou pulvérulents
BE1003644A3 (fr) * 1990-01-26 1992-05-12 Incoplas Nv Sa Emballage pour produits liquides ou pulverulents.
US5176294A (en) * 1990-01-26 1993-01-05 S.A. Incoplas N.V. Packaging for liquid or pulverulent products
US5170911A (en) * 1990-02-23 1992-12-15 S.A. Incoplas N.V. Packaging for liquid or pulverulent products
BE1004257A5 (fr) * 1991-07-25 1992-10-20 Incoplas S A Emballage gerbable pour produits liquides ou pulverulents, a goulot fixe.
EP0524918A1 (fr) * 1991-07-25 1993-01-27 S.A. Incoplas N.V. Emballage gerbable pour produits liquides ou pulvérulents, à goulot fixe
WO2003031281A1 (fr) * 2001-10-10 2003-04-17 Carter Holt Harvey Limited Sac

Also Published As

Publication number Publication date
EP0264606A3 (en) 1989-02-01
DE3761425D1 (de) 1990-02-22
EP0264606A2 (fr) 1988-04-27

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