EP0190577B1 - Emballage pour liquides avec bec verseur - Google Patents

Emballage pour liquides avec bec verseur Download PDF

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Publication number
EP0190577B1
EP0190577B1 EP86100551A EP86100551A EP0190577B1 EP 0190577 B1 EP0190577 B1 EP 0190577B1 EP 86100551 A EP86100551 A EP 86100551A EP 86100551 A EP86100551 A EP 86100551A EP 0190577 B1 EP0190577 B1 EP 0190577B1
Authority
EP
European Patent Office
Prior art keywords
edge
top wall
opening
pouring
pouring opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86100551A
Other languages
German (de)
English (en)
Other versions
EP0190577A2 (fr
EP0190577A3 (en
Inventor
Hans Dr. Rausing
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 Pak AB
Original Assignee
Tetra Pak AB
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 Pak AB filed Critical Tetra Pak AB
Publication of EP0190577A2 publication Critical patent/EP0190577A2/fr
Publication of EP0190577A3 publication Critical patent/EP0190577A3/de
Application granted granted Critical
Publication of EP0190577B1 publication Critical patent/EP0190577B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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
    • B65D5/708—Separate tearable flexible elements covering a discharge opening of a container, e.g. adhesive tape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1043—Subsequent to assembly
    • Y10T156/1044—Subsequent to assembly of parallel stacked sheets only
    • Y10T156/1046—Bending of one lamina only

Definitions

  • the invention relates to a package for liquids made of cardboard and the like, which is liquid-impermeable at least on one surface by plastic coating, with side walls, bottom and top wall, which are at least partially connected to one another by folding and / or sealing seams, and with one in the top wall Tear-off pouring opening located near the edge line, which is covered with a preferably tear-off cover strip, a separate plastic strip being sealed in the area of the pouring opening, covering it, and projecting beyond the edge line of the top wall with an unsealed end to form a pouring edge.
  • Liquid food packs such as Milk, fruit juices are known. These packs consist of cardboard thinly coated with plastic on both surfaces and form liquid-tight, stable packs that are currently widely used in retail.
  • the packs are equipped with opening devices which are also known per se in a wide variety of shapes and constructions.
  • a specially known pack for milk has mainly a parallelepiped shape and has, among other things, the characteristics mentioned at the beginning.
  • the pouring opening has an elongated or oval shape and is oriented in such a way that the major axis of the pouring opening runs at right angles to the edge line of the top wall of the pack.
  • a plastic cover strip is provided, which is attached to the top wall of the pack in such a way that it covers both the pouring opening and an area surrounding this opening.
  • the cover strip is connected to the top wall in a liquid-tight manner in a zone lying around the pouring opening. Over a non-sealed end of the cover strip, the consumer can grip it well and pull it up to open it. It is desirable to empty the contents in a uniform and fairly collected jet.
  • a disadvantage of many packs is that the filling jet tries to follow the outer surface of the pack during pouring, so that it splits and partially runs down one of the side walls. This is mainly due to the fact that the in forming the package by folding along a bending edge created edge line, across which the filling material flows, weak tor u n-det and is not as sharply defined that solve the Brownstrahl on the outer surface of the package can.
  • the pouring edge is formed by this strip of material and, after tearing open the tear tab, bends upwards due to the inherent elasticity and forms the pouring edge. Nevertheless, the paper is exposed to the escaping liquid at the cut places and is softened and damaged when poured out.
  • the pouring opening is usually formed in the already coated cardboard web by punching out.
  • the edge of the pouring opening is therefore a cut line that exposes the uncoated paper edge.
  • pouring liquids e.g. Milk or fruit juice
  • this edge of the pouring spout becomes moist and absorbs liquid.
  • the top wall in the area around the opening edge not only loses strength, but the appearance also suffers after only partially emptying the filling material, and good conditions can also be created for bacteria, so that health problems could arise. It would therefore be beneficial if this cutting edge could also be covered.
  • the object of the invention is therefore to create a liquid pack of the type mentioned at the outset, saving material, which provides a simpler construction and also edge protection at the edge of the punched pouring opening. Furthermore, a method for producing such a package with an improved pouring device and a device are intended be created to carry out this procedure.
  • the object is achieved according to the invention in that the pouring edge lies above the plane of the top wall and in that the surface of the plastic strip covering the pouring opening is punched out, exposing the opening and folded over the opening edge and sealed at least from the underside.
  • both a pouring edge and an edge protector for the edge of the pouring opening are thus created by using a single separate plastic strip which is sealed onto the surface of the top wall from the outside. By sealing the edge of the plastic strip from the inside, an additional cover strip in the area of the package interior is no longer necessary.
  • the plastic strip is sealed onto the upper wall along a closed plastic strip along a closed sealing seam which surrounds the pouring opening at a distance.
  • the sealing of the plastic strip on the outside of the surface of the upper wall creates a captive pouring edge, which is not accidentally torn off even when the outer cover strip is removed.
  • the mentioned sealing seam as a narrow or narrow sealing zone around the pouring opening is sufficient for an adequate fastening of the plastic strip.
  • the sealing of the plastic strip takes place over the entire surface up to the edge of the pouring opening; and in a specific further alternative embodiment it may be advantageous to seal around the edge of the pouring opening, i.e. to be provided in the edge area on the outer surface. The latter two alternatives prevent dirt or other foreign particles from collecting between the top wall and the plastic strip.
  • the plastic strip is formed from a thermoplastic film, the thickness of which is five to ten times the plastic coating of the cardboard material, preferably the thermoplastic film for the plastic strip has a thickness of 0.1 to 0.2 mm.
  • the plastic strip which covers the pouring opening on the upper wall up to the edge line, is made of a relatively rigid material, so that there is really a sharp pouring edge, with the result that the filling material can be poured out better.
  • Thermoplastics which are particularly suitable for the production of the plastic strip are preferably polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyester. With the individual mixtures, one can also make a desired temperature setting, i.e. set a particularly desired softening temperature.
  • the process for producing the opening device described above is characterized in that a plastic strip covering the opening and extending to the nearest edge line is sealed onto the area of the pouring opening punched out of the top wall in such a way that its end remains seal-free in the area of the edge line that the surface above the pouring opening is deep-drawn to a level below the top wall and a hole is punched out of the plastic strip at a distance from the opening edge, the closed edge of this hole is folded over in the plastic strip and sealed from the inside of the package next to the edge of the pouring opening.
  • the plastic strip is therefore softened after being placed on the area of the pouring opening or is deep-drawn in its still soft state.
  • This deep-drawing takes place in the pouring opening down to the inside of the pack down to a level below the top wall, so that the deep-drawn, approximately parallel surface of the deep-drawn plastic strip lies at a distance below the top wall inside the pack.
  • a sealing seam is created in a circular or oval shape around the pouring opening, which also forms a stitching or fastening area for the plastic strip from the inside of the pack. This not only significantly improves the captivity of the plastic strip, but also provides edge protection for the edge of the pouring opening because liquid can no longer be absorbed by this opening edge and penetrate into it.
  • the hole can be made from the plastic strip before or after being folded over and sealed onto the inside of the package.
  • Deep drawing can be carried out in a manner known per se by means of a vacuum or mandrel.
  • the plastic strip is applied during the creasing, punching and cutting of the cardboard web in that it is applied by a Supply roll pulled off, shot at the area of the pouring opening ben, cut and sealed.
  • the corresponding cuts and seals can be made, with the creasing, punching and cutting of the cardboard web being carried out simultaneously or in between, if necessary.
  • sealing is carried out by high-frequency welding.
  • Another alternative is hot air or electric heating of panels.
  • the plastic strip is applied to the top wall of the package in such a heated state that the plastic strip can be sealed and deep-drawn, then a separate supply of heat is advantageously superfluous, because the plastic strip is already in a suitable manner sealing and deep drawing is tempered.
  • the size of the plastic strip towards the edge line, over which the filling material is poured out in a jet is preferably appropriately dimensioned correctly, if vertical in plan view the outer edge of the plastic strip lies approximately on the line of the fold line located below it, which was designated as the front edge line of the upper wall, on the top wall of the pack.
  • the device for carrying out the method described above is characterized according to the invention in that the counter-jaw counteracting the pressure mandrel has a punching device. If you create a combination of counter jaws and punching device or pressure mandrel and punching device, you can use simplified tools and thus achieve a faster work cycle. For example, a machine equipped with the device according to the invention is capable of producing 6000 packs per hour in the desired manner.
  • the device according to the invention has a counter jaw which is designed as a contact heating plate. This measure complements the other heating options for the plastic film already mentioned above, namely hot air or high-frequency welding.
  • the liquid pack is first shown in perspective from the outside.
  • This pack is formed from a tube, the sealing seam 4 serving to form the tube.
  • a triangular step 5 is formed over an edge line 9, which is folded down onto the adjacent side wall 2 and is attached there, as shown in FIG.
  • the pouring opening 6 which is covered by an outer cover strip 7 in a manner known per se (pull tab).
  • a separate plastic strip 10 is in the area of the pouring opening 6 via the in the FIGS. 3 and 4 show the narrow sealing seam 13 shown on the outside and the annular sealing surface 20 sealed on the inside.
  • the plastic strip 10 covers the pouring opening 6, as can be seen particularly clearly from FIG. 3.
  • the plastic strip 10 projects forward by a very small amount (0.5 to 2 mm) beyond the edge line 9 of the top wall 1. Directly next to the pouring edge 8 thus formed, the end 11 of the plastic strip 10 is not sealed to the top wall 4.
  • edge line 9 in the sectional representations according to FIGS. 2, 3 and 5 to 9 is excessively round.
  • the representation of FIG. 7 comes closest to the actual bending shape of the outer edge line 9. In any case, there are no sharply defined edges, as shown in perspective in the schematic FIG. 1.
  • FIG. 2 shows the perspective, schematic sectional view of the packaging corner on the left according to FIG. 1, the triangular tab 5 and also the cover strip 7 not being shown.
  • the pouring opening 6 is punched into the top wall 1, and the free opening edge 12 is obtained without any coating, which is a cutting line. Without protection of this edge or edge 12, liquid could penetrate into the area of the ring surface 12 and cause the softening and impurities described.
  • the plastic strip 10 is provided, which, according to FIG. 3, is placed on the area of the pouring opening 6. It clearly covers the pouring opening 6 and extends at least to the closest edge line 9 (FIG. 1 left); but preferably projects beyond this by a small piece of approximately 1 mm. In the last area, i.e. The end 11 of the plastic strip 10 is seal-free via a 0.5 to 3 mm wide strip parallel to the pouring edge 8. In the embodiment of FIG. 3, the plastic strip 10 is fastened on the outside only via the sealing seam 13 to the top wall 1, so that more than the end 11 of the plastic strip 10 is seal-free. If, however, a larger sealing surface than only the seam 13 according to FIG. 3 is provided, as mentioned at the beginning, the end 11 in the region of the edge line 9 of the plastic strip 10 should always remain sealed with the top wall 1.
  • FIG. 4 shows the top view of the plastic strip 10 with the pouring edge 8 which has thus been placed on top.
  • FIG. 6 the next step is shown, in which the entire deep-drawn bottom part is pressed upwards with the aid of the pressure mandrel 17.
  • the final state achieved in this way can be seen in FIG. 6, the annular walls 21 now forming a type of flange (FIGS. 6, 7 and 9).
  • the deep-drawn part of the plastic strip 10 is now punched out by means of the punching device 18 to form a hole 14 at a distance from the opening edge 12.
  • the stamped-out circle or oval of the plastic strip is shown schematically in FIG. 7 and designated by 22. If one thinks away in FIG. 7 the counter jaws 16 with the punching device 18 and the disk 22, then the representation in FIG. 7 — even without the outer cover strip 7 — is the final state of the outside and inside (via the annular surface 20 ) sealed plastic strip 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Packages (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Making Paper Articles (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)

Claims (10)

1. Emballage pour liquides en carton ou analogues, qui est imperméable aux liquides au moins sur l'une de ses surfaces à l'aide d'un revêtement plastique, comportant des parois latérales (1-3), un fond et une paroi supérieure (1), qui, au moins partiellement, sont assemblés les uns aux autres par des joints pliés (9) et/ou thermoscellés (4), et comportant un orifice verseur arrachable, se trouvant dans la paroi supérieure (1) au voisinage de la ligne de bord (9), orifice verseur recouvert d'une bande de couverture (7) de préférence arrachable, une bande plastique distincte (10), dans la zone de l'orifice verseur (6), étant thermoscellée de façon à recouvrir cette dernière et dépassant de la ligne de bord (9) de la paroi supérieure (1) comportant une extrémité non-thermoscellée (11) avec formation d'un bec verseur (8), caractérisé en ce que le bec verseur (8) se trouve au-dessus du plan de la paroi supérieure (1), et que la surface de la bande plastique (10), recouvrant l'orifice verseur (6), est découpée avec dégagement de l'ouverture (6) et est rabattue sur le bord d'ouverture (12), et est thermoscellée, au moins par la face inférieure.
2. Emballage selon la revendication 1, caractérisé en ce que la bande plastique (10) est, le long d'un joint thermoscellé (13) fermé, qui entoure l'orifice verseur (6) à une certaine distance de ce dernier, est thermoscellée sur la paroi supérieure (1).
3. Emballage selon les revendications 1 ou 2, caractérisé en ce que la bande plastique (10) est formée d'une feuille thermoplastique dont l'épaisseur est de cinq à dix fois celle du revète- ment plastique du matériau de type carton, et de préférence est de 0,1 à 0,2 mm.
4. Procédé pour la fabrication d'un dispositif d'ouverture d'un emballage selon l'une des revendications 1 à 3, caractérisé en ce que, sur la zone de l'orifice verseur (6) découpé dans la paroi supérieure (1), une bande plastique (10), qui recouvre l'ouverture (6) et va jusqu'à dépasser la ligne de bord immédiatement voisine (9), est appliquée par thermoscellage de façon que son extrémité (11) reste sans thermoscellage dans la zone de la ligne de bord (g); que la surface située au-dessus de l'orifice verseur (6) est emboutie jusqu'à un niveau situé en-dessous de la paroi supérieure (1) et, à une certaine distance du bord (12), un trou (14) est découpé dans la bande plastique (10), le bord fermé (15, 21) de ce trou (14) découpé dans la bande plastique (10) est rabattu, et est thermoscellé à partir de l'intérieur de l'emballage, à côté du bord (12) de l'orifice verseur (6).
5. Procédé selon la revendication 4, caractérisé en ce que la bande plastique (10), pendant le rainurage, le découpage et la coupe de la bande de carton est appliquée par tirage à partir d'un rouleau d'alimentation, puis est poussée sur la zone de l'orifice verseur (6), découpée et thermoscellée.
6. Procédé selon la revendication 4 ou 5, caractérisé en ce que le thermoscellage est réalisé par soudage haute fréquence.
7. Procédé selon l'une des revendications 4 à 6, caractérisé en ce que la bande plastique (10) est appliquée sur la paroi supérieure (1) de l'emballage dans un état chauffé à une température telle que la bande plastique (10) puisse être thermoscellée et emboutie.
8. Dispositif pour la mise en oeuvre du procédé selon l'une des revendications 4 à 7, caractérisé en ce que la contre-màchoire (16) opposée au mandrin presseur (17) comporte un dispositif découpeur (18).
9. Dispositif selon la revendication 8, caractérisé en ce que la contre-màchoire (16) est conçue comme une plaque chauffante par contact.
EP86100551A 1985-02-05 1986-01-17 Emballage pour liquides avec bec verseur Expired - Lifetime EP0190577B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08502910A GB2170479B (en) 1985-02-05 1985-02-05 A pack for liquids
GB8502910 1985-02-05

Publications (3)

Publication Number Publication Date
EP0190577A2 EP0190577A2 (fr) 1986-08-13
EP0190577A3 EP0190577A3 (en) 1987-10-28
EP0190577B1 true EP0190577B1 (fr) 1990-09-26

Family

ID=10573984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100551A Expired - Lifetime EP0190577B1 (fr) 1985-02-05 1986-01-17 Emballage pour liquides avec bec verseur

Country Status (8)

Country Link
US (2) US4998668A (fr)
EP (1) EP0190577B1 (fr)
JP (1) JPH0788061B2 (fr)
AU (1) AU580381B2 (fr)
CA (1) CA1285251C (fr)
DE (1) DE3674423D1 (fr)
GB (1) GB2170479B (fr)
RU (1) RU1838199C (fr)

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CH687252A5 (de) * 1994-06-10 1996-10-31 Tetra Laval Holdings & Finance Gebinde mit einsteckbarer Verschlusseinheit.
DE4441097A1 (de) * 1994-11-18 1996-05-23 Ruediger Haaga Gmbh Vorrichtung zum Herstellen und Anbringen eines Schutzbezuges bei einer Öffnung einer Wand für einen Behälter
US5704541A (en) 1996-04-25 1998-01-06 Tetra Laval Holdings & Finance S.A. Flat-top container with an opening fitment
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DE19915150A1 (de) * 1999-03-26 2000-10-12 Sig Combibloc Gmbh Verfahren zur Herstellung einer Verbundpackung und nach dem Verfahren hergestellte Verbundpackung
US6354062B1 (en) 1999-05-13 2002-03-12 Bevtek Inc. Method of manufacture of individual beverage carton with a straw therein
US6431434B1 (en) 1999-09-23 2002-08-13 Keith Louis Haughton Individual beverage carton with a straw therein and a method of manufacture
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CA2393953A1 (fr) 2000-01-03 2001-07-12 Acorn Bay, Llc Systeme de bec verseur a percer pour boissons
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EP1461285A4 (fr) * 2001-12-06 2005-05-25 Gabriel Cabelli Recipients de distribution de fluide portatifs
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US20050051443A1 (en) * 2003-09-04 2005-03-10 Yao-Chang Lin Cigarette box having a lid that can be torn to form an opening for drawing out a cigarette stick
JP2009520647A (ja) * 2005-12-21 2009-05-28 コロムブス イー．エーピーエス 廃棄処理可能な飲料缶
KR102244527B1 (ko) 2013-02-13 2021-04-23 루브리졸 어드밴스드 머티어리얼스, 인코포레이티드 수계 폴리아미드­우레아 분산물
CA2957915C (fr) 2014-08-11 2023-07-18 Lubrizol Advanced Materials, Inc. Compositions aqueuses de revetement de copolymere destinees a des applications de construction et industrielles
CN107109113A (zh) 2014-08-11 2017-08-29 路博润先进材料公司 用于印刷、数字喷墨油墨和在织物上印刷的含水聚合物组合物
BR112017012867B1 (pt) 2014-12-18 2022-05-31 Lubrizol Advanced Materials, Inc Poliamida dispersível em água, dispersão de poliamida em água, e, processo para formar um bloco de construção de poliamida dispersível em água
WO2016099726A1 (fr) 2014-12-18 2016-06-23 Lubrizol Advanced Materials, Inc. Polyamide à base aqueuse et leur extension de chaîne par des isocyanates pour former des dispersions de polyurées cationiques à base aqueuse
JP6999913B1 (ja) * 2020-02-21 2022-01-19 トタニ技研工業株式会社 穴あけ装置、および、スパウト装着装置

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Also Published As

Publication number Publication date
EP0190577A2 (fr) 1986-08-13
JPS61233529A (ja) 1986-10-17
GB2170479A (en) 1986-08-06
GB8502910D0 (en) 1985-03-06
DE3674423D1 (de) 1990-10-31
GB2170479B (en) 1988-09-28
JPH0788061B2 (ja) 1995-09-27
US4998668A (en) 1991-03-12
RU1838199C (ru) 1993-08-30
CA1285251C (fr) 1991-06-25
AU5283986A (en) 1986-08-14
AU580381B2 (en) 1989-01-12
US5158633A (en) 1992-10-27
EP0190577A3 (en) 1987-10-28

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