EP0416256A2 - Package for flowable products with opening device - Google Patents

Package for flowable products with opening device Download PDF

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Publication number
EP0416256A2
EP0416256A2 EP19900113726 EP90113726A EP0416256A2 EP 0416256 A2 EP0416256 A2 EP 0416256A2 EP 19900113726 EP19900113726 EP 19900113726 EP 90113726 A EP90113726 A EP 90113726A EP 0416256 A2 EP0416256 A2 EP 0416256A2
Authority
EP
European Patent Office
Prior art keywords
hole
plastic
lid
handle
cover
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
EP19900113726
Other languages
German (de)
French (fr)
Other versions
EP0416256A3 (en
EP0416256B1 (en
Inventor
Pär Magnus Andersson
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
Tetra Alfa Holdings 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 Tetra Laval Holdings and Finance SA, Tetra Alfa Holdings SA filed Critical Tetra Laval Holdings and Finance SA
Publication of EP0416256A2 publication Critical patent/EP0416256A2/en
Publication of EP0416256A3 publication Critical patent/EP0416256A3/en
Application granted granted Critical
Publication of EP0416256B1 publication Critical patent/EP0416256B1/en
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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/70—Break-in flaps, or members adapted to be torn-off, to provide pouring openings
    • B65D5/701—Tearable flaps defined by score-lines or incisions provided in the closure flaps of a tubular container made of a single blank

Definitions

  • the invention relates to a packaging for flowable filling goods, in particular milk, juices or the like, consisting of a tube forming the side walls with a lid and bottom, of which the lid has at least one folded-over wall panel formed in one piece with the tube, an opening device being provided in the lid is.
  • a liquid packaging of known type has a lid made of four such wall panels, which are covered with a metal foil to improve aseptic properties in order to achieve good gas tightness.
  • Narrow gaps are arranged between the individual wall panels, because the cut of the wall panels, which consist of plastic-coated carrier material made of paper, cardboard or the like, is designed in such a way that the cover surface is formed close to one another by the wall panels, leaving narrow gaps.
  • Rib-shaped bridges made of plastic are located in these narrow gaps and cover every cut edge of the carrier material, so that the pack is perfectly liquid-tight from the inside.
  • the known pack has punched-out or cut-off areas in the wall panels, in which an opening device is also injected together with the plastic bridges.
  • Variously designed opening devices can be formed by the injection molding process with thermoplastic plastics.
  • thermoplastic is intended be reduced, on the one hand, to make the production of the packs cheaper and, on the other hand, to provide better gas tightness, if desired, since it is known that the gas barrier properties of thermoplastics are not the best.
  • the person skilled in the art has therefore considered how, on the other hand, the pouring opening could be well sealed by means other than plastic membranes in the area of a molded-on opening device, but could also be torn open.
  • the invention is therefore based on the object of improving packaging for flowable fillings of the type mentioned at the outset in such a way that a fluid-tight and easy-to-operate opening device can be fitted which is inexpensive for the manufacturer even when such a package is produced in large quantities and is distributed.
  • this object is achieved in that the pouring opening of the opening device is closed by a tab that can be torn open along a line of weakness with a molded plastic handle, the line of weakness extends to the edge of the lid, opens there in or next to a hole in the wall area of the lid, and engages around a strand connected to the handle, which protrudes inwards from the surface of the lid facing the interior of the pack, extends through the hole to the outside and is extended by the handle.
  • the plastic also extends from the inside of the cover to the outside through a hole in the cover, as in the case of the last described package, the conditions according to the invention are just reversed or turned upside down.
  • the rib-shaped strand lies in the surface of the lid facing the interior of the package and even protrudes somewhat from this surface toward the interior of the package, while the outer surface of the lid is practically smooth and flat.
  • the tear-open tab which is known per se in other packs, is advantageously connected according to the invention with the injected rib-shaped strand made of plastic in such a way that the line of weakness is first provided in the carrier material, which is then used for sealing with plastic is coated. It is therefore sufficient if the carrier material is weakened and the plastic coating remains undamaged on the outside.
  • the molding of the handle which can have the shape of a small flag with ribs, a thread or a loop, for example, is particularly inexpensive according to the invention because the handle on the outside represents the extension of the strand of plastic which essentially runs inside the pack.
  • connection between the plastic strand on the inside and the handle on the outside is made through the hole in the top panel, which means that the packaging manufacturer and the spraying device require particularly inexpensive tools.
  • the user also has advantages when opening the previously fluid-tight opening device, because the weakening line opens near the hole, so that the tearing process begins in the area of the hole and the tear tab adjacent to the hole can then be torn up along the weakening line. Together with the pull tab, the rib-shaped plastic strand located therein is also torn up, because the line of weakness encompasses the plastic strand. This makes tearing open even easier, since the end user only needs to initiate the tearing process in the area of the hole with a certain amount of force. In the further course of the tearing open the flap along the line of weakness, which is essentially only in the material of the wall panel, preferably in the paper coated on both sides with plastic. As is well known, this can be torn quite easily.
  • the tear-open flap is articulated on the cover at the end opposite the spout tip. This measure facilitates reclosing, because the pull tab is held in place by the linkage on the lid even when the pouring opening is open. To cover the pouring opening when only part of the contents have been emptied the end user only has to pull the tab down again while pulling on the molded handle. The tab is automatically guided into its original position and can then be pressed in within the line of weakness.
  • the cover is flat and formed from at least four triangular wall panels, the edges of the wall panels being connected to one another in a liquid-tight manner by injected rib-shaped bridges made of plastic, and the line of weakness being a perforation line running in two adjacent wall panels, which perforation line as well also encompasses a rib-shaped bridge and at the outer end of which the hole is punched in at least one wall field.
  • the measures according to the invention permit good stacking and repackaging of packs provided with the new opening device, since the lid is flat, so that several packs can be placed one above the other, although rib-shaped plastic bridges pull the lid in a cross shape.
  • the strand of plastic is thus injected on the inside of the packing lid over an unbroken part or area of the lid field, a hole being provided on the edge of the tube, ie the fold line between the lid wall panel and the side wall.
  • the plastic of the strand extends in the manner described above through this hole from the inside of the pack and extends to the handle described.
  • the weakening or perforation line is located on both sides of the injected strand in the plastic-coated paper, encompassing the hole mentioned.
  • the strand of plastic can run a short distance from the tube edge into the wall field and end there, preferably in the region of an anchoring hole in the paper, on which the plastic strand is attached by a fungus Paper is holding.
  • This mushroom-shaped mounting button results from the fact that part of the plastic material extends outwards from the interior of the package or at least protrudes outwards through the anchoring opening in the paper.
  • the other embodiment is the one in which the tear-open tab is moved to the corner of the cover and is either part of an injected, rib-shaped bridge made of plastic or is connected to it.
  • the perforation line preferably runs half in one wall area of the cover and the other half in the adjacent cover wall area, as a result of which the rib-shaped plastic bridge can be enclosed in a simple manner, so that the advantages mentioned above are achievable.
  • the cover is polygonal and the hole is punched in the contact area of two adjacent wall fields.
  • the tube of the package described according to the invention can be round in cross section, for example circular or oval, but optionally also polygonal and preferably square or square. Blanks for such packs can be produced in a material-saving manner, and the preparations for attaching the opening device according to the invention are extremely simple with inexpensive and therefore robust tools, because only the edges of the wall panels and the hole between two adjacent wall panels need to be punched.
  • the plastic engages around the hole in at least one wall field outwards and inwards in a mushroom-like manner.
  • the cross-section through the injected plastic in the area of the hole is considered.
  • the plastic then encompasses all edge areas of the hole, which not only achieves excellent tightness in the case of liquids, but also gives the possibility of a solid connection between the integral molding of the handle and the rivet-like plastic compound in the area of the hole the pull tab and handle.
  • the tear-open force is guided exactly in the area of the hole at the beginning of the weakening line, so that the tear-open tab can be formed and opened exactly in accordance with the contours provided, without having to pay attention to special types of actuation.
  • the end user only needs to grasp the handle and pull up the pull tab.
  • the pouring opening thereby forms by itself and can even advantageously be closed again in the manner described.
  • the hole and thus the tip of the pouring spout can be placed exactly in a corner of the cover by punching the hole in the area of contact between two adjacent wall fields of, for example, a square cover.
  • the pouring process is particularly well defined in such an arrangement. No special pouring edge is necessary because this is given by the corner area of the pouring opening.
  • the filling material flows across this corner in a clearly defined jet.
  • the new opening device is designed and simplified in such a way that when the pouring process is interrupted and the pack is set down, no contents remain in corners or recessed areas of the opening device.
  • the strand of plastic connected to the handle ends within the edges of the wall area of the lid and extends outwards from the inside of the pack through an anchoring opening that is spaced from the hole.
  • This can be, for example, a single wall field, within the edges of which the strand of plastic ends when it starts at the upper edge of the tube.
  • the strand of plastic begins in an area at the shortest distance of 1 to 4 and preferably 2 cm from the lid distance around the anchoring opening, where it is injected during manufacture, for example, then it runs in the direction of the lid edge, which coincides with the upper edge of the tube runs there through the hole described and is thus connected to the outside of the pack, where it extends to the handle.
  • This embodiment without plastic bridges can be used universally and still allows the same advantages as described above in connection with the other alternative to be achieved.
  • FIGS. 1 to 6 One of the various types of pack is shown in FIGS. 1 to 6, with a tube 1 having a square cross-section, with the side walls 2 and 3. The other side walls are not shown here.
  • the bottom can also be formed by folded-over wall panels which are formed in one piece with the tube 1, forming two opposite, double-walled triangular panels which are connected to the interior of the pack.
  • folding closures also block bottoms, are known.
  • the preferred embodiment of the pack shown here has a lid 4 made of four triangular wall panels 5, 6, 7 and 8.
  • the opening device extends from the center 15 of the cover 4 to the spout tip 16.
  • a tear-open tab 17 In between is a tear-open tab 17, which is pulled through a rib-shaped plastic bridge 11 in the middle in the longitudinal direction.
  • the tear-open tab 17 (at a distance from the central plastic rib 11) is delimited by a weakening line 18 designed as a perforation line, which, after the tab 17 has been torn up, as shown in FIG. 2, defines the pouring opening 19.
  • a handle 20 is molded onto the rib-shaped plastic bridge 11, which here has the shape of a square tab with transverse ribs for has the better grip.
  • the plastic for the injected rib-shaped bridges 11 on the inside of the package and on the other hand of the handle 20 on the outside of the package consists of one piece and extends through a hole 21, which extends both in the wall section 5 and in the wall section 8, for example in half each there, in the lid 4.
  • This plastic mass extending from the inside to the outside through the hole 21 can be seen particularly clearly from FIGS. 4 and 5. It is designated by 22.
  • the point 23 in FIG. 5 shows the mushroom-shaped gripping of this plastic compound 22 in the region of the hole 21.
  • the end user grips the handle 20, which, as in the illustration in FIGS. 4 and 5, can be bent down onto the edge between the side walls 2 and 3 or one of the side walls, bends it up into the position in FIG. 1, where the handle 20 thus lies approximately in the plane of the cover 4 in its extension, and initiates the tearing process at the tip 16 of the spout.
  • the plastic 22 detaches from the side walls 2 and 3 because there is only a small adhesive area there, and forms the tear tab 17 in that the tear force allows the line of weakness 18 to be cut through, while the rib-shaped plastic bridge 11 remains undamaged.
  • the tearing takes place up to the end of the line of weakness 18 opposite the pouring spout 16, ie in the region of the center 15 of the lid 4.
  • the tear-open tab 17 is articulated there. After the pouring opening 19 has been exposed, the position of FIG. 2 is reached in which the tear-open tab 17 stands up at an angle.
  • the filling material can now be poured out over the nozzle tip 16. This lies on the edge of the hole 21 from which the plastic 22 is torn out together with the tear tab 17.
  • FIGS. 7 to 9 show another embodiment of an opening device on a package, the lid of which does not have rib-shaped plastic bridges.
  • the same parts are provided with the same reference numbers in order to simplify reading and understanding.
  • FIG. 7 shows a broken view of the alternative embodiment of a liquid pack described here, in which the wall panel 8 is looked at.
  • the tear-open tab 17 is defined by the weakening line 18, which is designed as a perforation line and runs from the end edge 12 of the tube around the plastic mass 22 in a U-shape.
  • the plastic compound 22 of the injected strand in this embodiment is located, as shown in FIG. 8, partly on the inside of the package and on the other hand again forms the handle 20 on the outside of the package.
  • the plastic mass 22 consists of one piece and extends in the same way as in the other embodiment described above through the hole 21 in the coated paper, in the region of the cover-side end edge 12 of the tube between the side wall 2 and the wall panel 8 of the cover.
  • the hole 21 is also surrounded by the plastic mass 22 of the strand like a mushroom.
  • the plastic strand 22 ends on the inner side opposite the handle 20 at a distance of about 2 to 3 cm the upper end edge 12 of the tube, as indicated in FIG. 7 by the dashed line 24.
  • the viewer of the finished, closed package does not see this in the viewing direction of FIG. 7, nor does the hole 21, which is also indicated by dashed lines in FIG. 7.
  • the viewer sees an anchoring button 25, in the area of which the plastic mass 22 of the strand extends outwards through an anchoring opening 26 from the inside of the package.
  • FIG. 8 shows the cross section of this anchoring button 25 in a mushroom shape, a preferred embodiment in practice.
  • this line 18 is torn open and is clearly visible to the viewer. It encloses the tear tab 17.
  • FIG. 9 shows a top view of the processed paper fields 2 and 8 with the hole 21 located in both, in the vicinity of which the U-shaped perforation line 18 ends. You can also see the anchoring opening 26, which is, for example, a circular hole.
  • the weakening or perforation line 18 can be interrupted in the web 27 connecting the two free legs of the U of the weakening line 18, so that there is an articulation for the tear tab 17.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Tubes (AREA)
  • Packages (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Basic Packing Technique (AREA)

Abstract

A package for milk is described which consists of a tube (1) forming the side walls (2, 3) and having a top (4) and a bottom of which the top (4) comprises at least one folded-over wall panel (5 to 8) constructed in one piece with the tube (1), an opening device (14) being provided within the top (4). According to the invention, it is suggested that the pourer orifice be closed by a tab which can be torn open along a line of weakness (18) and which has an integrally moulded handle of synthetic plastics material, the line of weakness (18) extending as far as the outer edge (12) of the top (4) where it ends in or adjacent to a hole in the wall panel (5, 8) of the top (4) engaging around, connected to the handle, a cord (11) which projects inwardly from the surface of the top (4) which is towards the interior of the package, extending outwardly through the hole and being lengthened by the handle.

Description

Die Erfindung betrifft eine Verpackung für fließfähige Füllgüter, insbesondere Milch, Säfte oder dergleichen, bestehend aus einem die Seitenwände bildenden Tubus mit Deckel und Boden, von denen der Deckel wenigstens ein umgefaltetes, mit dem Tubus einstückig ausgebildetes Wandfeld aufweist, wobei eine Öffnungsvorrichtung im Deckel vorgesehen ist.The invention relates to a packaging for flowable filling goods, in particular milk, juices or the like, consisting of a tube forming the side walls with a lid and bottom, of which the lid has at least one folded-over wall panel formed in one piece with the tube, an opening device being provided in the lid is.

Eine Flüssigkeitsverpackung bekannter Art hat einen Deckel aus vier solchen Wandfeldern, die für die Verbesserung aseptischer Eigenschaften mit einer Metallfolie belegt sind, um eine gute Gasdichtigkeit zu erzielen. Zwischen den einzelnen Wandfeldern sind schmale Spalte angeordnet, weil der Zuschnitt der Wandfel­der, die aus mit Kunststoff beschichtetem Trägermaterial aus Papier, Karton oder dergleichen bestehen, so ausgestaltet ist, daß die Deckelfläche durch die Wandfelder unter Belassung schmaler Spalte eng nebeneinander gebildet wird. Rippenförmige Brücken aus Kunststoff befinden sich in diesen schmalen Spalten und decken jegliche Schnittkante des Trägermaterials ab, so daß die Packung von innen einwandfrei flüssigkeitsdicht ist.A liquid packaging of known type has a lid made of four such wall panels, which are covered with a metal foil to improve aseptic properties in order to achieve good gas tightness. Narrow gaps are arranged between the individual wall panels, because the cut of the wall panels, which consist of plastic-coated carrier material made of paper, cardboard or the like, is designed in such a way that the cover surface is formed close to one another by the wall panels, leaving narrow gaps. Rib-shaped bridges made of plastic are located in these narrow gaps and cover every cut edge of the carrier material, so that the pack is perfectly liquid-tight from the inside.

Die bekannte Packung hat ausgestanzte oder abgeschnittene Bereiche in den Wandfeldern, in welchen zusammen mit den Kunststoffbrücken zugleich auch eine Öffnungsvorrichtung eingespritzt wird. Durch das Spritzverfahren mit thermoplasti­schen Kunststoffen sind verschiedenartig ausgestaltete Öffnungs­vorrichtungen bildbar.The known pack has punched-out or cut-off areas in the wall panels, in which an opening device is also injected together with the plastic bridges. Variously designed opening devices can be formed by the injection molding process with thermoplastic plastics.

Der Einsatz von thermoplastischem Kunststoff soll jedoch verringert werden, um einerseits die Herstellung der Packungen preiswerter zu machen und andererseits erwünschtenfalls bessere Gasdichtigkeiten vorzusehen, da bekanntlich die Gasbarriereeigen­schaften von thermoplastischen Kunststoffen nicht die besten sind. Der Fachmann hat daher Überlegungen angestellt, wie die Ausgießöffnung durch andere Mittel als durch Kunststoffmembranen im Bereich einer angespritzten Öffnungsvorrichtung gut abgedich­tet andererseits aber auch gut aufzureißen ausgestaltet werden könnten.However, the use of thermoplastic is intended be reduced, on the one hand, to make the production of the packs cheaper and, on the other hand, to provide better gas tightness, if desired, since it is known that the gas barrier properties of thermoplastics are not the best. The person skilled in the art has therefore considered how, on the other hand, the pouring opening could be well sealed by means other than plastic membranes in the area of a molded-on opening device, but could also be torn open.

Es sind dabei auch schon Überlegungen angestellt worden, bei Packungen mit einem Oberboden aus mit Kunststoff beschichtetem Papier an einer Stelle nietenartig einen auf dem Oberboden außen angebrachten Steg mit Greifeinrichtung anzuordnen, wobei die Ausgießöffnung durch Herausziehen einer Aufreißlasche längs einer im Oberboden befindlichen Perforationslinie gebildet werden kann. Bei einer solchen Öffnungsvorrichtung verläuft die Perforations­linie aber längs eines Ovals oder Kreises und darf nicht von einer rippenförmigen Kunststoffbrücke unterbrochen werden. Außerdem befinden sich der Steg aus thermoplastischem Kunststoff mit der angespritzten Niet, welche sich durch den Oberboden durch ein Loch in das Packungsinnere erstreckt, und der Greifeinrich­tung außerhalb und oberhalb des Oberbodens der Packung. Der Fachmann erkennt sogleich, daß für die Ausgestaltung einer solchen Öffnungsvorrichtung speziell geformte Werkzeuge und besondere Arten von Flüssigkeitspackungen erforderlich sind.There have also been considerations in the case of packs with an upper base made of plastic-coated paper at one point to arrange a web with a gripping device on the outside of the upper base, the pouring opening being able to be formed by pulling out a tear-open tab along a perforation line located in the upper base . With such an opening device, however, the perforation line runs along an oval or circle and must not be interrupted by a rib-shaped plastic bridge. In addition, the web made of thermoplastic material with the molded rivet, which extends through the top through a hole in the interior of the pack, and the gripping device are located outside and above the top of the pack. The person skilled in the art immediately recognizes that specially shaped tools and special types of liquid packs are required for the design of such an opening device.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Verpackung für fließfähige Füllgüter der eingangs genannten Art so zu verbessern, daß man eine fließmitteldichte und gut zu betätigende Öffnungsvorrichtung anbringen kann, die für den Hersteller auch dann preiswert ist, wenn eine solche Packung in großen Stückzah­len hergestellt und vertrieben wird.The invention is therefore based on the object of improving packaging for flowable fillings of the type mentioned at the outset in such a way that a fluid-tight and easy-to-operate opening device can be fitted which is inexpensive for the manufacturer even when such a package is produced in large quantities and is distributed.

Gemäß der Erfindung wird diese Aufgabe dadurch gelöst, daß die Ausgießöffnung der Öffnungsvorrichtung durch eine längs einer Schwächungslinie aufreißbare Lasche mit angespritztem Griff aus Kunststoff verschlossen ist, die Schwächungslinie bis zum Rand des Deckels verläuft, dort in oder neben einem Loch im Wandfeld des Deckels mündet und einen mit dem Griff verbundenen Strang umgreift, welcher aus der dem Packungsinneren zugewandten Oberfläche des Deckels nach innen heraussteht, sich durch das Loch nach außen erstreckt und durch den Griff verlängert ist. Zwar erstreckt sich der Kunststoff wie bei der zuletzt beschrie­benen Packung auch von der Innenseite des Deckels nach außen durch ein Loch im Deckel, die Verhältnisse sind erfindungsgemäß aber gerade umgekehrt bzw. auf den Kopf gestellt. Erfindungsgemäß liegt der rippenförmige Strang in der dem Packungsinneren zugewandten Oberfläche des Deckels und ragt sogar zum Packungsin­neren aus dieser Oberfläche etwas heraus, während die äußere Oberfläche des Deckels praktisch glatt und eben ist. Der Fachmann erkennt aus der vorstehenden Lehre der Erfindung sogleich die preiswerte Herstellungsmöglichkeit, wenn der sich im Packungsin­neren befindliche rippenförmige Strang oder Steg aus Kunststoff durch das Loch nach außen zum Griff verlängert. Eine solche Verlängerung läßt sich sehr preiswert ausgestalten. Sie ist für den Packungshersteller kaum mit zusätzlichen Kosten verbunden. Für ein Massenprodukt stellt diese Tatsache einen bedeutsamen Vorteil dar, der von jedem Fachmann gern aufgegriffen wird, wenn dadurch außerdem günstige Dichtigkeits- und Öffnungseigenschaften der neuen Öffnungsvorrichtung gegeben sind.According to the invention, this object is achieved in that the pouring opening of the opening device is closed by a tab that can be torn open along a line of weakness with a molded plastic handle, the line of weakness extends to the edge of the lid, opens there in or next to a hole in the wall area of the lid, and engages around a strand connected to the handle, which protrudes inwards from the surface of the lid facing the interior of the pack, extends through the hole to the outside and is extended by the handle. Although the plastic also extends from the inside of the cover to the outside through a hole in the cover, as in the case of the last described package, the conditions according to the invention are just reversed or turned upside down. According to the invention, the rib-shaped strand lies in the surface of the lid facing the interior of the package and even protrudes somewhat from this surface toward the interior of the package, while the outer surface of the lid is practically smooth and flat. From the above teaching of the invention, the person skilled in the art immediately recognizes the inexpensive production possibility if the rib-shaped strand or web made of plastic located inside the package extends outward through the hole to the handle. Such an extension can be made very inexpensive. It is hardly associated with additional costs for the packaging manufacturer. For a mass-produced product, this fact represents a significant advantage, which any person skilled in the art will be happy to take advantage of, if it also gives the new opening device favorable sealing and opening properties.

Die aufreißbare Lasche, die bei anderen Packungen zwar an sich bekannt ist, wird erfindungsgemäß vorteilhaft mit dem eingesprit­zen rippenförmigen Strang aus Kunststoff so in Verbindung gebracht, daß die Schwächungslinie zuerst im Trägermaterial vorgesehen wird, welches dann zur Dichtigkeit mit Kunststoff beschichtet wird. Es genügt also, wenn das Trägermaterial geschwächt ist und die Kunststoffbeschichtung außen unverletzt verbleibt. Das Anspritzen des Griffes, der beispielsweise die Form einer kleinen Fahne mit Rippen, eines Fadens oder einer Schlaufe haben kann, gelingt erfindungsgemäß besonders preiswert, weil der Griff nach außen hin die Verlängerung des im Packungsin­neren im wesentlichen verlaufenden Stranges aus Kunststoff darstellt. Die Verbindung zwischen dem Kunststoffstrang innen und dem Griff außen erfolgt durch das Loch im Deckelwandfeld, was für den Packungshersteller und die Spritzeinrichtung besonders preisgünstige Werkzeuge bedingt. Aber auch der Benutzer erhält Vorteile beim Öffnen der zuvor gut fließmitteldichten Öffnungs­vorrichtung, denn die Schwächungslinie mündet nahe dem Loch, so daß der Einreißvorgang im Bereich des Loches beginnt und die bis an das Loch angrenzende Aufreißlasche dann längs der Schwächungs­linie hochgerissen werden kann. Zusammen mit der Aufreißlasche wird auch der in dieser befindliche rippenförmige Kunststoff­strang hochgerissen, denn die Schwächungslinie umgreift den Kunststoffstrang. Dadurch wird das Aufreißen weiter erleichtert, denn der Endbenutzer braucht nur im Bereich des Loches mit einem gewissen Kraftaufwand anfänglich den Aufreißvorgang einzuleiten. Im weiteren Verlauf des Aufreißens verlängert sich die Lasche längs der Schwächungslinie, die sich im wesentlichen nur im Material des Wandfeldes befindet, vorzugsweise in dem beidseitig mit Kunststoff beschichteten Papier. Dieses läßt sich bekanntlich recht leicht durchreißen.The tear-open tab, which is known per se in other packs, is advantageously connected according to the invention with the injected rib-shaped strand made of plastic in such a way that the line of weakness is first provided in the carrier material, which is then used for sealing with plastic is coated. It is therefore sufficient if the carrier material is weakened and the plastic coating remains undamaged on the outside. The molding of the handle, which can have the shape of a small flag with ribs, a thread or a loop, for example, is particularly inexpensive according to the invention because the handle on the outside represents the extension of the strand of plastic which essentially runs inside the pack. The connection between the plastic strand on the inside and the handle on the outside is made through the hole in the top panel, which means that the packaging manufacturer and the spraying device require particularly inexpensive tools. But the user also has advantages when opening the previously fluid-tight opening device, because the weakening line opens near the hole, so that the tearing process begins in the area of the hole and the tear tab adjacent to the hole can then be torn up along the weakening line. Together with the pull tab, the rib-shaped plastic strand located therein is also torn up, because the line of weakness encompasses the plastic strand. This makes tearing open even easier, since the end user only needs to initiate the tearing process in the area of the hole with a certain amount of force. In the further course of the tearing open the flap along the line of weakness, which is essentially only in the material of the wall panel, preferably in the paper coated on both sides with plastic. As is well known, this can be torn quite easily.

Günstig ist es gemäß der Erfindung ferner, wenn die Aufreißlasche an dem der Tüllenspitze gegenüberliegenden Ende am Deckel angelenkt ist. Diese Maßnahme erleichtert das Wiederverschließen, denn die Aufreißlasche wird durch die Anlenkung am Deckel auch bei geöffneter Ausgießöffnung festgehalten. Zum Bedecken der Ausgießöffnung, wenn nur ein Teil des Füllgutes entleert worden war, braucht der Endverbraucher die Lasche nur unter Zug am angespritzten Griff wieder nach unten zu ziehen. Die Lasche wird von selbst in ihre ursprüngliche Position geführt und läßt sich dann innerhalb der Schwächungslinie eindrücken.It is also advantageous according to the invention if the tear-open flap is articulated on the cover at the end opposite the spout tip. This measure facilitates reclosing, because the pull tab is held in place by the linkage on the lid even when the pouring opening is open. To cover the pouring opening when only part of the contents have been emptied the end user only has to pull the tab down again while pulling on the molded handle. The tab is automatically guided into its original position and can then be pressed in within the line of weakness.

In weiterer vorteilhafter Ausgestaltung der Erfindung ist der Deckel eben und aus wenigstens vier dreieckförmigen Wandfeldern gebildet, wobei die Ränder der Wandfelder durch eingespritzte rippenförmige Brücken aus Kunststoff flüssigkeitsdicht miteinan­der verbunden sind und die Schwächungslinie eine in zwei benachbarten Wandfeldern verlaufende Perforationslinie ist, welche sowohl das Loch als auch eine rippenförmige Brücke umgreift und an deren äußerem Ende das Loch in wenigstens einem Wandfeld eingestanzt ist. Die erfindungsgemäßen Maßnahmen erlauben ein gutes Stapeln und Umverpacken von mit der neuen Öffnungsvorrichtung versehenen Packungen, denn der Deckel ist eben, so daß mehrere Packungen übereinandergesetzt werden können, obwohl rippenförmige Kunststoffbrücken den Deckel kreuzförmig durchziehen. Nach der allgemeinen Lehre der Erfindung liegt also auf der Innenseite des Packungsdeckels der Strang aus Kunststoff eingespritzt über einem ungebrochenen Teil oder Bereich des Deckelfeldes, wobei ein Loch an der Kante des Tubus, d.h. der Faltlinie zwischen Deckelwandfeld und Seitenwand vorgesehen ist. Der Kunststoff des Stranges erstreckt sich in der oben beschrie­benen Weise durch eben dieses Loch aus dem Packungsinneren nach außen und verlängert sich zu dem beschriebenen Griff. Außerdem befindet sich auf beiden Seiten des eingespritzten Stranges die Schwächungs- bzw. Perforationslinie in dem mit Kunststoff beschichteten Papier, das genannte Loch umgreifend. Bei der einen Alternative kann erfindungsgemäß der Strang aus Kunststoff vom Tubusrand ein Stück weit in das Wandfeld verlaufen und dort enden, vorzugsweise im Bereich eines Verankerungsloches im Papier, an welchem sich der Kunststoffstrang durch einen Pilz am Papier haltert. Dieser pilzförmige Halterungsknopf entsteht dadurch, daß sich ein Teil des Kunststoffmaterials vom Packung­sinnenraum nach außen erstreckt oder wenigstens durch die Verankerungsöffnung im Papier nach außen hindurchragt. Die andere Ausführungsform ist diejenige, bei welcher die aufreißbare Lasche in die Ecke des Deckels verlegt wird und entweder ein Teil einer eingespritzten, rippenförmigen Brücke aus Kunststoff ist oder mit dieser in Verbindung steht.In a further advantageous embodiment of the invention, the cover is flat and formed from at least four triangular wall panels, the edges of the wall panels being connected to one another in a liquid-tight manner by injected rib-shaped bridges made of plastic, and the line of weakness being a perforation line running in two adjacent wall panels, which perforation line as well also encompasses a rib-shaped bridge and at the outer end of which the hole is punched in at least one wall field. The measures according to the invention permit good stacking and repackaging of packs provided with the new opening device, since the lid is flat, so that several packs can be placed one above the other, although rib-shaped plastic bridges pull the lid in a cross shape. According to the general teaching of the invention, the strand of plastic is thus injected on the inside of the packing lid over an unbroken part or area of the lid field, a hole being provided on the edge of the tube, ie the fold line between the lid wall panel and the side wall. The plastic of the strand extends in the manner described above through this hole from the inside of the pack and extends to the handle described. In addition, the weakening or perforation line is located on both sides of the injected strand in the plastic-coated paper, encompassing the hole mentioned. In one alternative, according to the invention, the strand of plastic can run a short distance from the tube edge into the wall field and end there, preferably in the region of an anchoring hole in the paper, on which the plastic strand is attached by a fungus Paper is holding. This mushroom-shaped mounting button results from the fact that part of the plastic material extends outwards from the interior of the package or at least protrudes outwards through the anchoring opening in the paper. The other embodiment is the one in which the tear-open tab is moved to the corner of the cover and is either part of an injected, rib-shaped bridge made of plastic or is connected to it.

Zwar ist die Ausgestaltung einer Schwächungslinie durch eine Perforationslinie an sich bekannt, erfindungsgemäß verläuft die Perforationslinie aber vorzugsweise zur einen Hälfte in einem Wandfeld des Deckels und zur anderen Hälfte in dem benachbarten Deckelwandfeld, wodurch die rippenförmige Kunststoffbrücke dazwischen in einfacher Weise eingeschlossen werden kann, so daß die vorstehend erwähnten Vorteile erreichbar sind.Although the design of a weakening line through a perforation line is known per se, according to the invention the perforation line preferably runs half in one wall area of the cover and the other half in the adjacent cover wall area, as a result of which the rib-shaped plastic bridge can be enclosed in a simple manner, so that the advantages mentioned above are achievable.

Weiterhin ist es erfindungsgemäß zweckmäßig, wenn der Deckel vieleckig ist und das Loch im Berührungsbereich zweier benachbar­ter Wandfelder eingestanzt ist. Der Tubus der erfindungsgemäß beschriebenen Packung kann im Querschnitt rund, z.B. kreisförmig oder oval, gegebenenfalls aber auch vieleckig und vorzugsweise viereckig bzw. quadratisch sein. Zuschnitte für solche Packungen lassen sich materialsparend herstellen, und die Vorbereitungen für die Anbringung der erfindungsgemäßen Öffnungsvorrichtung sind denkbar einfach mit preiswerten und dadurch robusten Werkzeugen, weil nur die Ränder der Wandfelder und das Loch zwischen zwei benachbarten Wandfeldern einzustanzen ist. Außerdem ergeben sich erfindungsgemäß sehr kleine Flächen, die nur durch Kunststoff abgedeckt sind, während die Hauptbereiche der Packung aus den Wandfeldern bestehen, die man im Falle einer aseptischen Packung durch Metallfolien gasundurchlässig ausbilden kann.Furthermore, it is expedient according to the invention if the cover is polygonal and the hole is punched in the contact area of two adjacent wall fields. The tube of the package described according to the invention can be round in cross section, for example circular or oval, but optionally also polygonal and preferably square or square. Blanks for such packs can be produced in a material-saving manner, and the preparations for attaching the opening device according to the invention are extremely simple with inexpensive and therefore robust tools, because only the edges of the wall panels and the hole between two adjacent wall panels need to be punched. In addition, according to the invention there are very small areas which are only covered by plastic, while the main areas of the pack consist of the wall panels which can be made gas-impermeable in the case of an aseptic pack by metal foils.

Vorteilhaft ist es erfindungsgemäß auch, wenn der Kunststoff das Loch in wenigstens einem Wandfeld nach außen und innen pilzartig umgreift. Bei der bildlichen Vorstellung eines Pilzes wird hier an den Querschnitt durch den eingespritzten Kunststoff im Bereich des Loches gedacht. Wie bei einer Niet umgreift dann der Kunststoff alle Randbereiche des Loches, wodurch nicht nur im Falle von Flüssigkeiten eine hervorragende Dichtigkeit erreicht wird sondern auch die Möglichkeit gegeben ist, bei der einstücki­gen Anspritzung des Griffes an die nietenartige Kunststoffmasse im Bereich des Loches eine feste Verbindung zwischen der Aufreißlasche und dem Griff zu schaffen. Bei Einleitung des Öffnungsvorganges wird damit die Aufreißkraft exakt im Bereich des Loches an den Anfang der Schwächungslinie geführt, so daß die Aufreißlasche genau entsprechend den vorgesehenen Umrissen gebildet und geöffnet werden kann, ohne daß besondere Betäti­gungsarten beachtet werden müßten. Der Endverbraucher braucht lediglich den Griff zu erfassen und die Aufreißlasche hochzuzie­hen. Die Ausgießöffnung bildet sich dadurch von selbst und läßt sich in der beschriebenen Weise mit Vorteil sogar wieder verschließen.It is also advantageous according to the invention if the plastic engages around the hole in at least one wall field outwards and inwards in a mushroom-like manner. When picturing a mushroom, the cross-section through the injected plastic in the area of the hole is considered. As with a rivet, the plastic then encompasses all edge areas of the hole, which not only achieves excellent tightness in the case of liquids, but also gives the possibility of a solid connection between the integral molding of the handle and the rivet-like plastic compound in the area of the hole the pull tab and handle. When the opening process is initiated, the tear-open force is guided exactly in the area of the hole at the beginning of the weakening line, so that the tear-open tab can be formed and opened exactly in accordance with the contours provided, without having to pay attention to special types of actuation. The end user only needs to grasp the handle and pull up the pull tab. The pouring opening thereby forms by itself and can even advantageously be closed again in the manner described.

Durch das Einstanzen des Loches im Berührungsbereich zweier benachbarter Wandfelder eines beispielsweise viereckigen Deckels läßt sich das Loch und damit die Spitze der Ausgießtülle genau in eine Ecke des Deckels legen. Der Ausgießvorgang ist bei einer solchen Anordnung besonders gut definiert. Es ist keine besondere Gießkante nötig, denn diese ist durch den Eckenbereich der Ausgießöffnung gegeben. Über diese Ecke fließt das Füllgut in klar definiertem Strahl. Außerdem ist die neue Öffnungsvorrich­tung so ausgestaltet und vereinfacht, daß beim Unterbrechen des Ausgießvorganges und Absetzen der Packung keine Füllgutreste in Ecken oder vertieften Bereichen der Öffnungsvorrichtung haften bleiben. Diese Vorteile begünstigen die Hygieneeigenschaften der neuen Öffnungsvorrichtung.The hole and thus the tip of the pouring spout can be placed exactly in a corner of the cover by punching the hole in the area of contact between two adjacent wall fields of, for example, a square cover. The pouring process is particularly well defined in such an arrangement. No special pouring edge is necessary because this is given by the corner area of the pouring opening. The filling material flows across this corner in a clearly defined jet. In addition, the new opening device is designed and simplified in such a way that when the pouring process is interrupted and the pack is set down, no contents remain in corners or recessed areas of the opening device. These advantages favor the hygienic properties of the new opening device.

Bei zweckmäßiger weiterer Ausgestaltung der Erfindung endet der mit dem Griff verbundene Strang aus Kunststoff innerhalb der Ränder des Wandfeldes des Deckels und erstreckt sich durch eine vom Loch im Abstand befindliche Verankerungsöffnung aus dem Packungsinneren nach außen. Es wurde oben bereits auf die zwei unterschiedlichen Ausführungsformen hingewiesen, die eine, bei welcher der Strang aus Kunststoff in die rippenförmigen Brücken zwischen den Rändern der Deckelwandfelder übergeht, und die andere, wie hier beschrieben, wonach nämlich der Strang aus Kunststoff nichts mit rippenförmigen Kunststoffbrücken zu tun hat sondern zusätzlich separat von diesen oder an Deckeln angeordnet ist, welche keine solche Kunststoffbrücken haben. Hier kann es sich beispielsweise um ein einziges Wandfeld handeln, innerhalb dessen Ränder der Strang aus Kunststoff endet, wenn er an der oberen Tubuskante beginnt. Oder in anderer Richtung geblickt: wenn der Strang aus Kunststoff in einem Bereich im kürzesten Abstand von 1 bis 4 und vorzugsweise 2 cm vom Deckelabstand entfernt um die Verankerungsöffnung herum beginnt, wo er bei der Herstellung beispielsweise eingespritzt wird, dann verläuft er in Richtung Deckelrand, der mit der oberen Tubuskante zusammen­fällt, verläuft dort durch das beschriebene Loch und erhält damit Verbindung nach außerhalb der Packung, wohin er sich zum Griff verlängert. Diese Ausführungsform ohne Kunststoffbrücken ist universell einsetzbar und erlaubt dennoch das Erreichen der gleichen Vorteile wie oben in Verbindung mit der anderen Alternative beschrieben.In an expedient further embodiment of the invention, the strand of plastic connected to the handle ends within the edges of the wall area of the lid and extends outwards from the inside of the pack through an anchoring opening that is spaced from the hole. It has already been pointed out above the two different embodiments, the one in which the strand of plastic merges into the rib-shaped bridges between the edges of the cover wall panels, and the other, as described here, namely that the strand of plastic does not connect with rib-shaped plastic bridges do but is additionally arranged separately from these or on lids that have no such plastic bridges. This can be, for example, a single wall field, within the edges of which the strand of plastic ends when it starts at the upper edge of the tube. Or looked in another direction: if the strand of plastic begins in an area at the shortest distance of 1 to 4 and preferably 2 cm from the lid distance around the anchoring opening, where it is injected during manufacture, for example, then it runs in the direction of the lid edge, which coincides with the upper edge of the tube runs there through the hole described and is thus connected to the outside of the pack, where it extends to the handle. This embodiment without plastic bridges can be used universally and still allows the same advantages as described above in connection with the other alternative to be achieved.

Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der vorliegenden Erfindung ergeben sich anhand der folgenden Beschreibung in Verbindung mit den anliegenden Zeichnungen. Es zeigen:

  • Figur 1 abgebrochen eine perspektivische Draufsicht auf eine spezielle Ausführungsform einer Flüssigkeitspackung mit ebenem Deckel im geschlossenen Zustand der Öffnungsvor­richtung,
  • Figur 2 eine ähnliche Ansicht wie Figur 1, wobei die Aufreißla­sche aber im geöffneten Zustand gezeigt ist,
  • Figur 3 eine Draufsicht auf die Packung gemäß Figur 1,
  • Figur 4 eine Querschnittsansicht durch den oberen Teil des Tubus einer Packung mit Deckel und Öffnungsvorrichtung, etwa entlang der Linie IV-IV der Figur 6,
  • Figur 5 abgebrochen die Einzelheit A gemäß strichpunktiertem Kreis in Figur 4,
  • Figur 6 eine Draufsicht auf den geschlossenen Deckel, wenn man auf die dem Packungsinneren zugewandte Oberfläche des Deckels blickt,
  • Figur 7 die Draufsicht auf die Packung nach einer anderen Ausführungsform, welche von der der Figuren 1 bis 6 abweicht, weil diese Packung keine Kunststoffbrücken hat und die Öffnungsvorrichtung nicht in der Deckelecke angeordnet ist,
  • Figur 8 eine Querschnittsansicht entlang der Linie VIII-VIII in Figur 7 und
  • Figur 9 eine Draufsicht auf einen Teil des ebenen Zuschnittes der Packung vor dem Anspritzen von Kunststoff, wobei eine Seitenwand und das daran angrenzende Wandfeld des Deckels in eine Ebene (die Zeichenebene) aufgeklappt und abgebrochen sind.
Further advantages, features and possible uses of the present invention will become apparent from the following description in conjunction with the accompanying drawings. Show it:
  • FIG. 1 shows a perspective top view broken off of a special embodiment of a liquid pack with a flat lid in the closed state of the opening device,
  • FIG. 2 shows a view similar to FIG. 1, but the tear-open tab is shown in the open state,
  • FIG. 3 shows a top view of the package according to FIG. 1,
  • FIG. 4 shows a cross-sectional view through the upper part of the tube of a package with a lid and opening device, approximately along the line IV-IV in FIG. 6,
  • FIG. 5 shows the detail A broken off according to the dash-dotted circle in FIG. 4,
  • FIG. 6 shows a top view of the closed cover when looking at the surface of the cover facing the interior of the pack,
  • 7 shows the top view of the pack according to another embodiment, which differs from that of FIGS. 1 to 6, because this pack has no plastic bridges and the opening device is not arranged in the corner of the lid,
  • Figure 8 is a cross-sectional view taken along the line VIII-VIII in Figure 7 and
  • FIG. 9 shows a plan view of a part of the flat blank of the package before the injection of plastic, with a side wall and the wall field of the lid adjoining it being opened up and broken off into one plane (the drawing plane).

Von den verschiedenen Packungsformen ist in den Figuren 1 bis 6 eine Packung mit im Querschnitt viereckigem Tubus 1 mit den Seitenwänden 2 und 3 dargestellt. Die anderen Seitenwände sind hier nicht gezeigt.One of the various types of pack is shown in FIGS. 1 to 6, with a tube 1 having a square cross-section, with the side walls 2 and 3. The other side walls are not shown here.

Der nicht gezeigte Boden kann ebenfalls durch umgefaltete, mit dem Tubus 1 einstückig ausgebildete Wandfelder unter Bildung zweier gegenüberliegender, mit dem Inneren der Packung in Verbindung stehender doppelwandiger Dreieckfelder gebildet sein. Solche Faltverschlüsse, auch Klotzböden, sind bekannt. Die hier gezeigte bevorzugte Ausführungsform der Packung weist einen Deckel 4 aus vier dreieckförmigen Wandfeldern 5, 6, 7 und 8 auf.The bottom, not shown, can also be formed by folded-over wall panels which are formed in one piece with the tube 1, forming two opposite, double-walled triangular panels which are connected to the interior of the pack. Such folding closures, also block bottoms, are known. The preferred embodiment of the pack shown here has a lid 4 made of four triangular wall panels 5, 6, 7 and 8.

Zwischen den Rändern 9 und 10 zweier beispielsweise herausgegrif­fener Wandfelder 6 und 7 ergibt sich in der Ebene des Deckels 4 ein schmaler Spalt, der durch eingespritzte rippenförmige Brücken 11 verschlossen ist. In der Draufsicht auf die äußere Oberfläche des Deckels 4 gemäß den Figuren 1 bis 3 erscheinen hier nur sehr schmale Streifen. Wenn man hingegen in das Innere der Packung blickt, wie in Figur 6 zu sehen ist, dann sieht man die sich kreuzenden eingespritzten rippenförmigen Brücken 11 in breiter Ausgestaltung. Vorzugsweise ist rundum längs der deckelseitigen Endkante 12 des Tubus 1 ein die radial äußeren Enden der Kunststoffbrücken 11 jeweils geradlinig verbindender Kunststoff­steg 13 gezeigt, der für die Werkzeuge bevorzugt, jedoch nicht in jedem Fall notwendig ist.Between the edges 9 and 10 of two wall areas 6 and 7 picked out, for example, there is a narrow gap in the plane of the cover 4, which is closed by injected rib-shaped bridges 11. In the top view of the outer surface of the cover 4 according to FIGS. 1 to 3, only very narrow strips appear here. If, on the other hand, one looks into the interior of the package, as can be seen in FIG. 6, then one sees the intersecting injected rib-shaped bridges 11 in a broad configuration. A plastic web 13, which connects the radially outer ends of the plastic bridges 11 in each case in a straight line, is preferably shown all around along the cover-side end edge 12 of the tube 1, which is preferred for the tools, but is not necessary in every case.

Die allgemein mit 14 bezeichnete Öffnungsvorrichtung erstreckt sich aus dem Zentrum 15 des Deckels 4 zur Tüllenspitze 16 hin. Dazwischen befindet sich eine aufreißbare Lasche 17, die mittig in Längsrichtung durch eine rippenförmige Kunststoffbrücke 11 durchzogen wird. Außen ist die Aufreißlasche 17 (im Abstand von der mittigen Kunststoffrippe 11) durch eine als Perforationslinie ausgebildete Schwächungslinie 18 begrenzt, welche nach Hochreißen der Lasche 17 gemäß Darstellung der Figur 2 die Ausgießoffnung 19 vorgibt. Im Bereich der Tüllenspitze, d.h. nach außen, ist an der rippenförmigen Kunststoffbrücke 11 ein Griff 20 angespritzt, der hier die Form einer quadratischen Lasche mit Querrippen für den besseren Greifeingriff hat.The opening device, generally designated 14, extends from the center 15 of the cover 4 to the spout tip 16. In between is a tear-open tab 17, which is pulled through a rib-shaped plastic bridge 11 in the middle in the longitudinal direction. On the outside, the tear-open tab 17 (at a distance from the central plastic rib 11) is delimited by a weakening line 18 designed as a perforation line, which, after the tab 17 has been torn up, as shown in FIG. 2, defines the pouring opening 19. In the area of the spout tip, ie outwards, a handle 20 is molded onto the rib-shaped plastic bridge 11, which here has the shape of a square tab with transverse ribs for has the better grip.

Der Kunststoff für die eingespritzten rippenförmigen Brücken 11 auf der Innenseite der Packung und andererseits des Griffes 20 auf der Außenseite der Packung besteht aus einem Stück und erstreckt sich durch ein Loch 21, welches sich sowohl im Wandfeld 5 als auch im Wandfeld 8, beispielsweise jeweils hälftig dort, im Deckel 4 befindet. Diese sich von innen nach außen durch das Loch 21 erstreckende Kunststoffmasse sieht man besonders deutlich aus den Figuren 4 und 5. Sie ist mit 22 bezeichnet. An der Stelle 23 in Figur 5 erkennt man das pilzförmige Umgreifen dieser Kunststoffmasse 22 im Bereich des Loches 21.The plastic for the injected rib-shaped bridges 11 on the inside of the package and on the other hand of the handle 20 on the outside of the package consists of one piece and extends through a hole 21, which extends both in the wall section 5 and in the wall section 8, for example in half each there, in the lid 4. This plastic mass extending from the inside to the outside through the hole 21 can be seen particularly clearly from FIGS. 4 and 5. It is designated by 22. The point 23 in FIG. 5 shows the mushroom-shaped gripping of this plastic compound 22 in the region of the hole 21.

Zum Öffnen ergreift der Endverbraucher den Griff 20, der wie bei der Darstellung der Figuren 4 und 5 auf die Kante zwischen den Seitenwänden 2 und 3 oder eine der Seitenwände heruntergebogen sein kann, biegt ihn in die Position der Figur 1 hoch, wo der Griff 20 also etwa in der Ebene des Deckels 4 in dessen Verlänge­rung liegt, und leitet den Aufreißvorgang an der Tüllenspitze 16 ein. Man erkennt, daß sich der Kunststoff 22 von den Seitenwänden 2 und 3 löst, weil dort nur eine geringe Haftungsfläche vorgese­hen ist, und die Aufreißlasche 17 dadurch bildet, daß die Aufreißkraft die Schwächungslinie 18 durchzutrennen erlaubt, während die rippenförmige Kunststoffbrücke 11 unzerstört erhalten bleibt. Das Aufreißen erfolgt bis zum Ende der Schwächungslinie 18 gegenüber der Ausgießtülle 16, d.h. im Bereich der Mitte 15 des Deckels 4. Dort ist die Aufreißlasche 17 angelenkt. Nach dem Freilegen der Ausgießöffnung 19 ist also die Position der Figur 2 erreicht, bei welcher die Aufreißlasche 17 schräg hochsteht. Das Füllgut kann nun über die Tüllenspitze 16 ausgegossen werden. Diese liegt am Rande des Loches 21, aus welchem der Kunststoff 22 zusammen mit der Aufreißlasche 17 herausgerissen ist.For opening, the end user grips the handle 20, which, as in the illustration in FIGS. 4 and 5, can be bent down onto the edge between the side walls 2 and 3 or one of the side walls, bends it up into the position in FIG. 1, where the handle 20 thus lies approximately in the plane of the cover 4 in its extension, and initiates the tearing process at the tip 16 of the spout. It can be seen that the plastic 22 detaches from the side walls 2 and 3 because there is only a small adhesive area there, and forms the tear tab 17 in that the tear force allows the line of weakness 18 to be cut through, while the rib-shaped plastic bridge 11 remains undamaged. The tearing takes place up to the end of the line of weakness 18 opposite the pouring spout 16, ie in the region of the center 15 of the lid 4. The tear-open tab 17 is articulated there. After the pouring opening 19 has been exposed, the position of FIG. 2 is reached in which the tear-open tab 17 stands up at an angle. The filling material can now be poured out over the nozzle tip 16. This lies on the edge of the hole 21 from which the plastic 22 is torn out together with the tear tab 17.

In den Figuren 7 bis 9 ist eine andere Ausführungsform einer Öffnungsvorrichtung an einer Packung gezeigt, deren Deckel nicht rippenförmige Kunststoffbrücken hat. Dennoch sind gleiche Teile mit gleichen Bezugszahlen versehen, um das Lesen und Verstehen zu vereinfachen.FIGS. 7 to 9 show another embodiment of an opening device on a package, the lid of which does not have rib-shaped plastic bridges. However, the same parts are provided with the same reference numbers in order to simplify reading and understanding.

Der als viereckig anzunehmende Tubus weist wieder eine Seitenwand 2 auf (nur diese ist hier gezeigt), welche über die deckelseitige Endkante 12 des Tubus in das Wandfeld 8 des Deckels übergeht. Es versteht sich, daß gemäß der Darstellung der Figuren 7 und 8 die Ebene der Seitenwand 2 senkrecht zu der des Wandfeldes 8 steht. Nimmt man einen viereckigen Tubus an, dann befindet sich die Öffnungsvorrichtung 14 an irgendeiner Stelle zwischen den Ecken des Deckels und selbstverständlich im Bereich der deckelseitigen Endkante 12 des Tubus.The tube to be assumed to be quadrangular again has a side wall 2 (only this is shown here), which merges into the wall area 8 of the lid via the end edge 12 of the tube on the lid side. It is understood that according to the representation of Figures 7 and 8, the plane of the side wall 2 is perpendicular to that of the wall panel 8. Assuming a square tube, the opening device 14 is located anywhere between the corners of the lid and of course in the region of the lid-side end edge 12 of the tube.

In Figur 7 ist abgebrochen eine Ansicht auf die hier beschriebene alternative Ausführungsform einer Flüssigkeitspackung gezeigt, bei welcher auf das Wandfeld 8 geblickt wird. Die Aufreißlasche 17 wird durch die als Perforationslinie ausgebildete Schwächungs­linie 18 definiert, welche von der Endkante 12 des Tubus beginnend U-förmig um die Kunststoffmasse 22 herumläuft. Die Kunststoffmasse 22 des eingespritzten Stranges bei dieser Ausführungsform befindet sich gemäß Darstellung der Figur 8 teilweise auf der Innenseite der Packung und bildet andererseits wieder den Griff 20 auf der Außenseite der Packung. Die Kunst­stoffmasse 22 besteht aus einem Stück und erstreckt sich in gleicher Weise wie bei der oben beschriebenen anderen Ausfüh­rungsform durch das Loch 21 in dem beschichteten Papier, und zwar im Bereich der deckelseitigen Endkante 12 des Tubus zwischen der Seitenwand 2 und dem Wandfeld 8 des Deckels. Das Loch 21 wird auch von der Kunststoffmasse 22 des Stranges pilzartig umgriffen.FIG. 7 shows a broken view of the alternative embodiment of a liquid pack described here, in which the wall panel 8 is looked at. The tear-open tab 17 is defined by the weakening line 18, which is designed as a perforation line and runs from the end edge 12 of the tube around the plastic mass 22 in a U-shape. The plastic compound 22 of the injected strand in this embodiment is located, as shown in FIG. 8, partly on the inside of the package and on the other hand again forms the handle 20 on the outside of the package. The plastic mass 22 consists of one piece and extends in the same way as in the other embodiment described above through the hole 21 in the coated paper, in the region of the cover-side end edge 12 of the tube between the side wall 2 and the wall panel 8 of the cover. The hole 21 is also surrounded by the plastic mass 22 of the strand like a mushroom.

Weil sich die strangförmige Kunststoffmasse 22 nicht in eine rippenförmige Brücke zwischen Wandfeldern verlängert, die bei der hier gezeigten Ausführungsform der Figuren 7 bis 9 nicht vorhanden ist, endet der Kunststoffstrang 22 auf der dem Griff 20 gegenüberliegenden inneren Seite etwa 2 bis 3 cm im Abstand von der oberen Endkante 12 des Tubus, wie in Figur 7 durch die gestrichelte Linie 24 angedeutet ist. Diese sieht der Betrachter der fertig verschlossenen Packung in Blickrichtung der Figur 7 ebenso wenig wie das Loch 21, welches in Figur 7 auch gestrichelt angedeutet ist. Der Betrachter sieht aber einen Verankerungsknopf 25, in dessen Bereich sich die Kunststoffmasse 22 des Stranges durch eine Verankerungsöffnung 26 vom Inneren der Packung nach außen erstreckt. In Figur 8 ist der Querschnitt dieses Veranke­rungsknopfes 25 pilzförmig gezeigt, eine in der Praxis bevorzugte Ausführungsform.Because the strand-shaped plastic mass 22 does not extend into a rib-shaped bridge between wall panels, which is not present in the embodiment of FIGS. 7 to 9 shown here, the plastic strand 22 ends on the inner side opposite the handle 20 at a distance of about 2 to 3 cm the upper end edge 12 of the tube, as indicated in FIG. 7 by the dashed line 24. The viewer of the finished, closed package does not see this in the viewing direction of FIG. 7, nor does the hole 21, which is also indicated by dashed lines in FIG. 7. However, the viewer sees an anchoring button 25, in the area of which the plastic mass 22 of the strand extends outwards through an anchoring opening 26 from the inside of the package. FIG. 8 shows the cross section of this anchoring button 25 in a mushroom shape, a preferred embodiment in practice.

Bei der Betrachtung der Figur 7 sieht der Benutzer möglicherweise die Schwächungslinie 18 sogar im verschlossenen Zustand der Packung. Nach dem erstmaligen Benutzen ist diese Linie 18 aufgerissen und zeigt sich dem Betrachter deutlich. Sie um­schließt die Aufreißlasche 17.When viewing FIG. 7, the user may see the line of weakness 18 even when the package is closed. After the first use, this line 18 is torn open and is clearly visible to the viewer. It encloses the tear tab 17.

Figur 9 zeigt in Draufsicht die bearbeiteten Papierfelder 2 und 8 mit dem in beiden befindlichen Loch 21, in dessen Nähe die U-­förmige Perforationslinie 18 endet. Man erkennt auch die Verankerungsöffnung 26, die beispielsweise ein kreisrundes Loch ist.FIG. 9 shows a top view of the processed paper fields 2 and 8 with the hole 21 located in both, in the vicinity of which the U-shaped perforation line 18 ends. You can also see the anchoring opening 26, which is, for example, a circular hole.

In dem die beiden freien Schenkel des U der Schwächungslinie 18 verbindenden Steg 27 kann die Schwächungs- bzw. Perforationslinie 18 unterbrochen sein, so daß sich hier eine Anlenkung für die Aufreißlasche 17 ergibt.The weakening or perforation line 18 can be interrupted in the web 27 connecting the two free legs of the U of the weakening line 18, so that there is an articulation for the tear tab 17.

Bei der Benutzung ergreift der Endverbraucher den Griff 20 und reißt ihn in Richtung Deckelmitte hoch. Die Kunststoffmasse 22 des Stranges löst sich im Bereich des Loches 21 vom Papier, bleibt aber innerhalb der gestrichelten Linie 24 in Figur 7 am Papier der Aufreißlasche 17 hängen, so daß die Schwächungslinie 18 aufgerissen wird, bis die Öffnungsvorrichtung ganz geöffnet ist. 2When in use, the end user grips the handle 20 and pulls it up towards the center of the lid. The plastic mass 22 of the strand detaches from the paper in the region of the hole 21, but remains attached to the paper of the tear tab 17 within the dashed line 24 in FIG. 7, so that the weakening line 18 is torn open until the opening device is fully open. 2nd

Claims (6)

1. Verpackung für fließfähige Füllgüter, insbesondere Milch, Säfte oder dergleichen, bestehend aus einem die Seitenwände (2, 3) bildenden Tubus (1) mit Deckel (4) und Boden, von denen der Deckel (4) wenigstens ein umgefaltetes, mit dem Tubus (1) einstückig ausgebildetes Wandfeld (5 bis 8) aufweist, wobei eine Öffnungsvorrichtung (14) im Deckel (4) vorgesehen ist, dadurch gekennzeichnet, daß die Ausgießöff­nung (19) der Öffnungsvorrichtung (14) durch eine längs einer Schwächungslinie (18) aufreißbare Lasche (17) mit angespritztem Griff (20) aus Kunststoff verschlossen ist, die Schwächungslinie (18) bis zum Außenrand (12) des Deckels (4) verläuft, dort in oder neben einem Loch (21) im Wandfeld (5, 8) des Deckels (4) mündet und einen mit dem Griff (20) verbundenen Strang (11, 22) umgreift, welcher aus der dem Packungsinneren zugewandten Oberfläche (Figur 6) des Deckels (4) nach innen heraussteht, sich durch das Loch (21) nach außen erstreckt und durch den Griff (20) verlängert ist.1. Packaging for flowable filling goods, in particular milk, juices or the like, consisting of a tube (1) forming the side walls (2, 3) with a lid (4) and bottom, of which the lid (4) is at least one folded over with which Tube (1) has a one-piece wall section (5 to 8), an opening device (14) being provided in the cover (4), characterized in that the pouring opening (19) of the opening device (14) is provided by a line of weakness (18). tear-open tab (17) is closed with a molded-on plastic handle (20), the line of weakness (18) extends to the outer edge (12) of the cover (4), there in or next to a hole (21) in the wall panel (5, 8) of the lid (4) opens and encompasses a strand (11, 22) which is connected to the handle (20) and which protrudes inwards from the surface (FIG. 6) of the lid (4) facing the pack, through the hole (21) extends outwards and through the handle (20) v is extended. 2. Verpackung nach Anspruch 1, dadurch gekennzeichnet, daß die Aufreißlasche (17) an dem der Tüllenspitze (16) gegenüber­liegenden Ende (15) am Deckel (4) angelenkt ist.2. Packaging according to claim 1, characterized in that the tear-open tab (17) is articulated on the cover (4) at the end (15) opposite the spout tip (16). 3. Verpackung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Deckel (4) eben ist und aus wenigstens vier dreieckförmigen Wandfeldern (5-8) gebildet ist, wobei die Ränder (9, 10) der Wandfelder (5-8) durch eingespritzte rippenförmige Brücken (11) aus Kunststoff flüssigkeitsdicht miteinander verbunden sind, und daß die Schwächungslinie (18) eine in zwei benachbarten Wandfeldern (5, 8) verlaufen­de Perforationslinie ist, welche sowohl das Loch (21) als auch eine rippenförmige Brücke (11) umgreift und an deren äußerem Ende das Loch (21) in wenigstens einem Wandfeld (5, 8) eingestanzt ist (Figuren 1 bis 6).3. Packaging according to claim 1 or 2, characterized in that the cover (4) is flat and is formed from at least four triangular wall panels (5-8), the edges (9, 10) of the wall panels (5-8) through injected rib-shaped bridges (11) are connected to one another in a liquid-tight manner, and that the weakening line (18) is a perforation line running in two adjacent wall panels (5, 8), which both the hole (21) and also surrounds a rib-shaped bridge (11) and at the outer end of which the hole (21) is punched in at least one wall section (5, 8) (FIGS. 1 to 6). 4. Verpackung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Deckel (4) vieleckig ist und das Loch (21) im Berührungsbereich zweier benachbarter Wandfel­der (5, 8) eingestanzt ist.4. Packaging according to one of claims 1 to 3, characterized in that the cover (4) is polygonal and the hole (21) in the contact area of two adjacent wall panels (5, 8) is punched. 5. Verpackung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Kunststoff (22) das Loch (21) in wenigstens einem Wandfeld (5, 8) nach außen und innen pilzartig (23) umgreift.5. Packaging according to one of claims 1 to 4, characterized in that the plastic (22) engages around the hole (21) in at least one wall panel (5, 8) outwardly and inwardly mushroom-like (23). 6. Verpackung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der mit dem Griff (20) verbundene Strang (11, 22) aus Kunststoff innerhalb der Ränder (9, 10, 12) des Wandfeldes (8) des Deckels (4) endet und sich durch eine vom Loch (21) im Abstand befindliche Verankerungsöffnung aus dem Packung­sinneren nach außen erstreckt (Figuren 7 und 8).6. Packaging according to claim 1 or 2, characterized in that with the handle (20) connected strand (11, 22) made of plastic within the edges (9, 10, 12) of the wall panel (8) of the lid (4) ends and extends outwards from the inside of the pack through an anchoring opening spaced from the hole (21) (FIGS. 7 and 8).
EP90113726A 1989-09-05 1990-07-18 Package for flowable products with opening device Expired - Lifetime EP0416256B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3217/89A CH679850A5 (en) 1989-09-05 1989-09-05
CH3217/89 1989-09-05

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EP0416256A2 true EP0416256A2 (en) 1991-03-13
EP0416256A3 EP0416256A3 (en) 1991-11-21
EP0416256B1 EP0416256B1 (en) 1994-09-21

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US (1) US5029752A (en)
EP (1) EP0416256B1 (en)
JP (1) JPH0398849A (en)
AT (1) ATE111847T1 (en)
AU (1) AU641175B2 (en)
CA (1) CA2024526A1 (en)
CH (1) CH679850A5 (en)
DE (1) DE59007225D1 (en)
DK (1) DK0416256T3 (en)
ES (1) ES2059917T3 (en)

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US5392589A (en) * 1993-09-03 1995-02-28 Jebco Packaging Systems, Inc. Method of constructing a container with unitary spout pull tab
US5871146A (en) * 1997-04-29 1999-02-16 Onderko; Patricia Fluid carton container with pull tab
US6076729A (en) * 1998-06-22 2000-06-20 The Popstraw Company, Llc Fluid dispensing spout for beverage containers
SE532765C2 (en) * 2008-06-19 2010-04-06 Tetra Laval Holdings & Finance Method and apparatus for injection molding in the manufacture of packaging containers
SE1451051A1 (en) * 2013-12-30 2015-07-01 Tetra Laval Holdings & Finance Molding apparatus and method for manufacturing an opening device
RU2016130971A (en) * 2013-12-30 2018-02-06 Тетра Лаваль Холдингз Энд Файнэнс С.А. PACKAGING CONTAINER WITH OPENING DEVICE AND METHOD FOR ITS MANUFACTURE
EP2889231A1 (en) * 2013-12-30 2015-07-01 Tetra Laval Holdings & Finance SA Packaging material and packaging container having an opening device made therefrom
RU2683828C2 (en) * 2014-05-07 2019-04-02 Тетра Лаваль Холдингз Энд Файнэнс С.А. Packaging material laminate structure
CN106457633B (en) * 2014-06-19 2019-05-17 利乐拉瓦尔集团及财务有限公司 Shedding motion and its manufacturing method and packaging material for the method
MX2017008155A (en) 2014-12-22 2017-09-18 Tetra Laval Holding & Finance S A Package material and package container formed with said material.
WO2016102151A1 (en) * 2014-12-22 2016-06-30 Tetra Laval Holdings & Finance S.A. Package material and package container formed with said material
US10259633B2 (en) 2015-02-09 2019-04-16 Tetra Laval Holdings & Finance S.A. Package material and package container formed with said material
EP3257770B1 (en) * 2016-06-17 2021-03-31 Tetra Laval Holdings & Finance S.A. An opening system for a container, a method of making the same and a container comprising the opening system
EP3312103A1 (en) * 2016-10-20 2018-04-25 Tetra Laval Holdings & Finance S.A. Angled opening device

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GB2189772A (en) * 1986-04-28 1987-11-04 Tetra Pak Int A liquid pack having an opening strip
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Also Published As

Publication number Publication date
AU641175B2 (en) 1993-09-16
DE59007225D1 (en) 1994-10-27
AU6215590A (en) 1991-03-14
ES2059917T3 (en) 1994-11-16
JPH0398849A (en) 1991-04-24
EP0416256A3 (en) 1991-11-21
DK0416256T3 (en) 1994-11-14
US5029752A (en) 1991-07-09
ATE111847T1 (en) 1994-10-15
EP0416256B1 (en) 1994-09-21
CA2024526A1 (en) 1991-03-06
CH679850A5 (en) 1992-04-30

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