EP0264606A2 - 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
EP0264606A2
EP0264606A2 EP87113175A EP87113175A EP0264606A2 EP 0264606 A2 EP0264606 A2 EP 0264606A2 EP 87113175 A EP87113175 A EP 87113175A EP 87113175 A EP87113175 A EP 87113175A EP 0264606 A2 EP0264606 A2 EP 0264606A2
Authority
EP
European Patent Office
Prior art keywords
bag
combination
sack
hole
tube
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.)
Granted
Application number
EP87113175A
Other languages
German (de)
English (en)
Other versions
EP0264606B1 (fr
EP0264606A3 (en
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
WILHELMSTAL WERKE GmbH
Original Assignee
Wilhelmstal-Werke Papiersackfabriken GmbH
WILHELMSTAL WERKE 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, WILHELMSTAL WERKE 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

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861Spouts
    • B65D75/5872Non-integral spouts
    • B65D75/5877Non-integral spouts connected to a planar surface of the package wall
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D77/00Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04Articles or materials enclosed in two or more containers disposed one within another

Definitions

  • the invention is directed to a combination sack of the type specified in the preamble of claim 1. Difficulties arise in filling a liquid or pasty material into such a combination sack and then closing the inner sack in a liquid-tight manner.
  • the invention has also recognized that it is advantageous to tightly close the inner bag 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 combination bag is inexpensive to manufacture because the inner and outer bags are produced fully automatically can, wherein the cutting out of the holes and the introduction of the openings in the two sack layers in the manufacturing process according to claim 22 can be easily integrated.
  • the flange of the spout can be subsequently coupled and liquid-tightly connected to the inner sack, which can be done by welding or gluing.
  • the spout installed there does not interfere with the further handling of the sack due to its edge position and promotes filling, storage and transport of the filled sack.
  • 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 closed airtight again by applying the closure to the grommet and the remaining goods are 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 perforations between them, whereby the inner bag is divided into separable partial inner bags.
  • 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 bag 10 shown in Fig. 1 consists of an inner bag 11 divided into two partial inner bags 11 ⁇ , 11 ⁇ made of liquid-tight, but generally also stretchable film material and an outer bag 20 made of the relatively inextensible material, such as e.g. 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 the form of a tube, 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 ⁇ .
  • the hose is, preferably at the same time, provided with two further longitudinal seams 16, 16 ⁇ , a tearable weakening line 17 being arranged between these two seams 16, 16 ⁇ at the same time or in a later process step 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 unrecognizable further Cross 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 mentioned central zone 15 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 fluid-tight connection.
  • the film tube is divided into the two partial inner bags 11ens, 11 ⁇ according to FIG. 2, which can be separated from one another later by tearing along the perforation 17.
  • the two partial inner bags 11 ⁇ , 11 ⁇ are connected 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 multi-layer sheet of paper or the like used for the production of the later outer bag 20, is put 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 one in places interconnected double-walled combination hose forms.
  • 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.
  • 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 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 slots 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 arises at the interface.
  • the section of the film tube 11 produced in this way is formed as a closed inner sack 11 by the transverse seams 18 at both ends, 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.
  • the corner folds 32 lying on the two longitudinal edges 13, 13 ⁇ are folded, which have a triangular outline according to FIG. 6. Because of the above-mentioned staplings 22, the wall areas of the inner bag 11 located underneath are also folded during this folding of the corner folds 32.
  • the inner bag 11 with its openings 25, 25 ⁇ also occupies a defined, aligned position with the holes 24, 24 ⁇ of the casing tube 20 and its slits 26, 26 ⁇ , 27, 27 ⁇ .
  • the inner bag is also along the fold line 33 indicated by dashed lines in FIG. 6 in the form of the Dashed tip 34 also folded.
  • a support sheet 34 made of tear-resistant material is placed on the spread-out floor, which, in particular in its corner areas, 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 bag 10 is still with 1 and 9 provided two spouts 40, 40 ⁇ , the assembly of which can take place, 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 coupling of the grommets 40, 40 ⁇ can take place 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 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 finished when the pipe section 41 comes into alignment with the associated opening 25 of the partial inner bag 11 ⁇ in question.
  • the edge zone 39 indicated by dash-dotted lines in FIG. 10 around the opening 25 is used to fasten the spout flange 42, for which a screw, adhesive and / or welded connection is suitable.
  • the pipe section 41 extends through the hole 24 in 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 Corners 32, which appear on the narrow side 47 of the bag when the bag is full, as shown in FIG. 1.
  • the two spouts 40, 40 ⁇ are therefore when the combination bag 10 is filled in the upper part of the narrow sides 47 of the bag, which is why this can be easily placed on its cross base 30.
  • This triangular part 46 can also be pressed in somewhat when the sack is full, which is why the piece of pipe equipped with the cover 44 or 44 ⁇ is below the outline of the cuboid combination sack 10.
  • connection of a spout 49 with the combination bag 10 could also take place in a different way.
  • Such a buttoning movement could also take place through the opening 25 or 25 ⁇ in the partial inner bag 11 ⁇ or 11 ⁇ , whereby the flange comes to rest on the inside of the wall of the inner bag and thus experiences a more favorable connection to the inner bag.
  • This one-button movement 10 could also be carried out in the handling of FIG. 10 in order to finally also lead the flange 42 through the inner bag opening 25.
  • the connection of the connection piece could also be carried out in other phases during the folding of the cross base.
  • 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, thereby receives 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 connected to one another via the perforation 17, which has not yet been separated.
  • the two partial films of the two partial inner bags 11 ⁇ , 11 ⁇ inflate within the formats of the outer bag 20 which define a cuboid shape. If possible, both inner bags 11 Opera, 11 ⁇ will be filled together, but independent filling is easily 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 completely 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 bags instead of just two inner bags.
  • a tear thread 48 in the region of the cross base 30, as indicated in FIG. 1, after its actuation the outer bag 20 is easy to open and the two partial inner bags 11 ⁇ , 11 ⁇ are accessible. After tearing, the coherent inner bag 11 can be removed as a whole from the outer bag 20, including the two-sided spouts 40, 40 ⁇ and their lids 44, 44 ⁇ . These elements, which consist of film or plastic material, can be folded up or crumpled up, possibly including the inclusion of filling residues that can no longer be removed, and taken to a special landfill.
  • the outer bag 20, which generally consists of easily rotten material, can be disposed of in the usual way.
  • the spouts 40, 40 ⁇ can also be arranged in other areas of the combination bag 10, for example on the end face of the bag within the cross bottoms 30.
  • the two spouts 40, 40 ⁇ need not be arranged on the same side and at the same end of the bag, but could be located on opposite ends or sides of the combination bag 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
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
DE3635809 1986-10-22
DE19863635809 DE3635809A1 (de) 1986-10-22 1986-10-22 Kreuzboden-kombinationssack und verfahren zu dessen herstellung
DE3713001 1987-04-16
DE19873713001 DE3713001A1 (de) 1987-04-16 1987-04-16 Kombinationssack

Publications (3)

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

Country Status (2)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008089905A1 (fr) * 2007-01-22 2008-07-31 Mars Incorporated Emballage pour matériau en vrac
CN110662704A (zh) * 2017-05-03 2020-01-07 Dy-Pack包装古斯塔夫·戴科霍夫有限责任公司 多层的袋

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1003644A3 (fr) * 1990-01-26 1992-05-12 Incoplas Nv Sa Emballage pour produits liquides ou pulverulents.
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.
NZ514701A (en) * 2001-10-10 2004-07-30 Carter Holt Harvey Ltd Bag with inner pouch and outer bag having tear strip with sufficiently high tack temperature

Citations (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

Patent Citations (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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008089905A1 (fr) * 2007-01-22 2008-07-31 Mars Incorporated Emballage pour matériau en vrac
CN110662704A (zh) * 2017-05-03 2020-01-07 Dy-Pack包装古斯塔夫·戴科霍夫有限责任公司 多层的袋

Also Published As

Publication number Publication date
DE3761425D1 (de) 1990-02-22
EP0264606B1 (fr) 1990-01-17
EP0264606A3 (en) 1989-02-01

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