EP0096826B1 - Procédé de fabrication pour emballage pour matériaux fluides - Google Patents

Procédé de fabrication pour emballage pour matériaux fluides Download PDF

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Publication number
EP0096826B1
EP0096826B1 EP83105578A EP83105578A EP0096826B1 EP 0096826 B1 EP0096826 B1 EP 0096826B1 EP 83105578 A EP83105578 A EP 83105578A EP 83105578 A EP83105578 A EP 83105578A EP 0096826 B1 EP0096826 B1 EP 0096826B1
Authority
EP
European Patent Office
Prior art keywords
edge
tube
side walls
pack
tool
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
Application number
EP83105578A
Other languages
German (de)
English (en)
Other versions
EP0096826A1 (fr
Inventor
Wilhelm Reil
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 Pak Finance and Trading 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6165945&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0096826(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tetra Laval Holdings and Finance SA, Tetra Pak Finance and Trading SA filed Critical Tetra Laval Holdings and Finance SA
Priority to AT83105578T priority Critical patent/ATE40077T1/de
Publication of EP0096826A1 publication Critical patent/EP0096826A1/fr
Application granted granted Critical
Publication of EP0096826B1 publication Critical patent/EP0096826B1/fr
Expired 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/10—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by form of integral or permanently secured end closure
    • B65D3/12—Flanged discs permanently secured, e.g. by adhesives or by heat-sealing

Definitions

  • the invention relates to a method for producing a plasticiser pack, consisting of side walls and end walls connected to one another via at least one longitudinal sealing seam, which are attached to the ends of a tube with a circular cross section and form the bottom and lid of the pack, the side walls being made of thermoplastic at least on one side Made of plastic-coated cardboard, the bottom of the pack is brought to a tool as a flat piece of wall and, together with the free edge of the side walls being flared by 20 ° to 40 ° against the vertical, is moved vertically towards the edge of the tube, then pressed onto the edge and the edge of the bottom is sealed onto the edge of the tube, after which the tool is removed, and finally the sealed edges of the side wall and bottom are raised again to the vertical.
  • Packs are currently on the market that are used in parallelepiped form for liquids, particularly milk and fruit juices.
  • the lid In a special known package, the lid consists of thermoplastic material without a carrier material and is injection molded along its outer edge on the side walls, wherein it has a pouring device that is folded into the outer contour of the package.
  • the opposite end wall which represents the bottom of this known pack, has triangular flaps folded over onto adjacent walls, because the bottom is designed as a so-called block bottom with a transverse sealing seam.
  • the cross-section of this block bottom is of course square, while the cross-section of the known packing is round in the area of the cover.
  • EP-A-74343 A method of the type described in the opening paragraph is known from EP-A-74343.
  • the package described there has a cylindrical tubular body made of cardboard, which is provided with a heat-sealable layer on at least one surface.
  • the finished container ultimately looks like a can.
  • Its end closure has an expanded flange which is pressed into the open end of the tube jacket by means of a press piston, which also has a conical peripheral surface.
  • the piston works together with a welding tool with a corresponding conical surface. Pressure on the piston makes the weldable layers plastically flowable. If the pressure piston with the lid or bottom moves down onto the tube, the welding takes place, which then hardens and becomes rigid.
  • the welding can also be carried out using high frequency or ultrasound.
  • the cardboard coated with plastic on the surfaces is open at the cut surfaces. If the known pack is used for the transport of liquids, there is already a "risk that liquid that has been partially spilled or that is lying on the cut edges for other reasons will penetrate them and cause the paper edges to swell, even during packaging and especially after opening and reclosing for the first time The package is consequently destroyed at the interfaces.
  • GB-A-1 014 085 also discloses a production method with the application of a flat bottom by means of flanging.
  • This British document describes containers made of plastic films such as those found in e.g. B. for the storage of condensed milk, oil sardines, etc., where the plastic can optionally also be coated with aluminum foil.
  • the person skilled in the art knows that there are considerable differences in the processing of coated paper on the one hand or plastics, even when they are laminated with aluminum foil, on the other hand, particularly in mass production.
  • a film web is drawn over an open tube, cut off, folded over, heated, welded and removed from the mold.
  • the lower outer edge - the welding stamp used there - hits the upper edge of the tube, processing errors can arise, in particular, in that the upper tube edge can inadvertently bend partially inwards.
  • cut paper is very at risk of moisture penetration at the interfaces, as explained above in connection with the other document. From the interfaces, swelling of the paper material poses considerable risks of destroying the package.
  • the invention is therefore based on the object of providing a production method for plasticizer packs of the type mentioned at the outset, in which a paper or cardboard tube can be reliably provided with a flat bottom in such a way that the cut edges of the paper are also protected against moisture.
  • the flaring mentioned takes place from the vertical to a more or less horizontal position, it being sufficient if a certain horizontal component is present. Bending back from the flanged position into the vertical is expedient if a package is desired in which the edge of the tubular side should ultimately stand up in the closed state. In the manufacturing process, flanging into the vertical also achieves a horizontal component for the outer support body, so that strong pressures can be applied during production to form a good sealing seam.
  • the edge of the tubular side walls can also be folded over on itself by 180 °. This results in a stiffening of the material of the side walls, so that even when using a plastic film as the base (without paper as the carrier material), a rigid edge and thus a secure packing are ensured.
  • the method according to the invention is preferably used to close a package which has already been provided with a lid and filled with the superplasticizer and was only open at its bottom end, which was to be closed with a dense and economically producible bottom.
  • a packing which is sealed according to the invention with a base, can be configured in a material-saving manner because the liquid level or that of the other flowable material can be set to a relatively high level below the upper edge of the tubular side walls. It is not necessary, as is the case with the known packs, to provide customary and material-consuming dead areas for the production of the block bottom.
  • the flaring is a bending of the edge of the side walls which initially stands up vertically into the horizontal, while the flanging is the turning of this edge from the vertical by 180 ° into the vertical on the opposite side of the side wall.
  • the advantage already mentioned above consists in the possibility of attaching outer support bodies which act as counterbrakes for a sealing jaw, so that all suitable materials can be connected along the abovementioned support or sealing surface. If, in the case of an intermediate product or another embodiment, the level of the base lies in the level of the edge which is initially flanged outwards into the horizontal, then the entire base surface bears forces. This results in excellent stability, which is even further improved by the fact that when the edge of the side walls is flared outwards, the standing surface, ie. H. the total area of the floor is larger than the area of the side walls themselves. So this is another embodiment with the edge horizontally outwards.
  • the method according to the invention is particularly advantageous if the flat wall piece for shaping the base is cut out so large that after the sealing of the two edges of the side wall and base, the circular edge of the base - for folding over the edge of the tube - over the edge of the side wall outstanding is provided.
  • This measure can also be used to protect and completely cover the peripheral edge against the ingress of moisture.
  • the base consists of a film formed from thermoplastic plastic, the outer edge of which is attached to the outer surface of the side walls. This process measure also serves to protect the edges, the inexpensive film being placed over the cut edge in a simple manner, bent down and tacked on.
  • edge which is initially open due to the cut through the coated paper is covered by the folding over of the edge parts, it is also advantageously possible to use non-waterproof paper, i.e. cheaper material, use.
  • non-waterproof paper i.e. cheaper material
  • the level of the bottom is arranged within the tubular side walls and transversely to them and the outwardly projecting circular edge of the bottom is laid over the free edge of the tube side walls by 180 ° and sealed on the outside, the suppleness of the material is used. This gives the edge reinforcement and strengthening at the same time.
  • the level of the base in this embodiment is not in the same plane as the free edge of the upstanding edge of the tubular side walls, the edge is so strong and stiffened by the folding over of the base edge that the edge can absorb the total load of the package without impairment and still a good stability of a package equipped with such a base is achieved.
  • a cover is only possible with a tool with an internal mandrel and surrounding parts, the machine parts as a whole having to be designed to be tightly sealed under high pressure. It goes without saying that a lid can only be injected onto an empty package. If you now want to spray a floor, the content here does not allow the use of comparatively complicated tools ge.
  • a pack can thus be produced in which the lid is made with the above-mentioned mandrel and surrounding part, but the bottom is welded according to the invention only by external support bodies and is nevertheless sealed.
  • the new base can therefore also be molded, injection-molded or sealed onto a filled package that is only closed on one side without a mandrel.
  • the pack which is preferably provided for liquids, has side walls 1 which consist of cardboard coated on both sides with thermoplastic material.
  • the filling material is not shown, but in the state of FIG. 1 can be assumed to be filled. Throughout the description, the package is assumed to be vertically upright with a circular cross-section.
  • the bottom is generally designated 2, which in the embodiment of FIG. 1 consists of a cardboard coated with thermoplastic.
  • the tubular side walls 1 have an upper edge 3 with an outer edge 4, and the bottom 2 also has an edge 5 with an outer edge 6. In the embodiment in FIG. 4, the edge 3 of the side walls 1 is 180 ° away from itself, specifically after outside, folded over.
  • the edge 3 of the tubular side walls 1 is flanged from the vertical into the horizontal after sealing with the bottom 2.
  • the outer edge 5 of the base 2 is placed around the free outer edge 4 of the flanged edge 3 of the side walls 1 by 180 °.
  • the outer edge 4 is covered, and the outer edge 6 of the base 2 is at most critical if the base is not made of plastic without a base material but is provided with base material which is not waterproof.
  • the edge 5 can then be provided with incisions which run approximately radially and ultimately result in a tooth shape on the periphery of the finished cut of the base 2.
  • This edge 5 with the incisions protrudes radially beyond the flanged edge 3 of the side walls 1 in the manner shown in FIG. 2, in order then to be placed around the side wall edge 3 by 180 °, so that the state shown in FIG. 3 is achieved.
  • FIG. 4 shows a base 2 made of pure plastic film without a carrier material.
  • the edge 3 of the side wall 1 is also flanged over itself by 180 °, the edge 5 of the base 2 protrudes beyond the outer edge 4 and is attached to the outer surface of the side walls 1.
  • a strong stiffening of the edge is already achieved on the side walls. Due to this rigidity, pressing on with the film as the base 2 is sufficient with heat without counter-baking in order to achieve a perfectly liquid-tight sealing.
  • FIG. 1 The embodiment according to FIG. 1 is produced in such a way that, according to FIG. 2, the upper free edge 3 of the tubular side walls 1 is first flared outwards by a certain angle, preferably 20 ° to 40 °, in particular 30 °, relative to the vertical to achieve a horizontal component for the tools (counter pressure).
  • This flanging takes place with the tool 8 shown schematically in FIG. 2, which at the same time also supports the base 2, the edge 5 of which is set at the same angle with respect to the vertical.
  • the counter jaw is not shown, but it is easy for any person skilled in the art to see that this type of manufacture (FIG. 2) on the inside of the edge 3 can be achieved with a good sealing seam between the edges 3 and 5 by applying considerable pressure is not affected in any way if the flaring is lifted again by raising it vertically.
  • FIG. 1 shows the state of the floor design of this embodiment.
  • FIGS. 3 to 5 The schematic configuration of the edge is shown in FIGS. 3 to 5, as explained above.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Making Paper Articles (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Cartons (AREA)

Claims (3)

1. Procédé de fabrication pour emballage pour matériaux fluides comprenant des parois latérales (1) assemblées en forme de tube par une soudure longitudinale au moins et des parois frontales (2) qui sont disposées aux extrémités d'un tube de section circulaire et forme le fond et le couvercle de l'emballage, les parois latérales (1) étant constituées par un carton pelliculé de matière plastique sur une face au moins, le fond (2) de l'emballage étant placé comme un élément plan de paroi sur un outil (8) pour être rapproché verticalement avec ce dernier en direction du bord du tube (3) en rabattant le bord libre (3) des parois latérales de 20 à 40° par rapport à la verticale, ledit fond (2) étant ensuite appliqué sur le bord (3) et le bord (5) du fond (2) étant soudé sur le bord du tube (3), l'outil (8) étant ensuite retiré, ce qui redresse finalement les bords soudés (3, 5) de la paroi latérale (1) et du fond (2) à la verticale, caractérisé en ce qu'après la soudure du bord (5) du fond sur le bord (3) du tube, le retrait de l'outil (8) replie le bord extérieur (5) du fond (2) sur l'arête libre (4) de la paroi du bord latéral (3) et le rabat de 180° par rapport à la face interne, en direction de l'extérieur, contre la face externe de la paroi latérale (2) pour y être agrafé par soudure.
2. Procédé selon la revendication 1, caractérisé en ce que l'élément plan devant constituer le fond (2) est découpé à une dimension telle qu'après soudage des deux bords (3, 5) de la paroi latérale (1) et du fond (2) l'arête circulaire (6) du fond (2) dépasse du bord (3) de la paroi latérale (1) pour être rabattue au-dessus de l'arête du tube (4).
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le fond (2) est constitué par une feuille de matière thermoplastique.
EP83105578A 1982-06-12 1983-06-07 Procédé de fabrication pour emballage pour matériaux fluides Expired EP0096826B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83105578T ATE40077T1 (de) 1982-06-12 1983-06-07 Verfahren zur herstellung einer fliessmittelpackung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3222180A DE3222180C2 (de) 1982-06-12 1982-06-12 Packung für fließfähige Füllgüter und Verfahren zur Herstellung eines Bodenverschlusses bei dieser Packung
DE3222180 1982-06-12

Publications (2)

Publication Number Publication Date
EP0096826A1 EP0096826A1 (fr) 1983-12-28
EP0096826B1 true EP0096826B1 (fr) 1989-01-18

Family

ID=6165945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105578A Expired EP0096826B1 (fr) 1982-06-12 1983-06-07 Procédé de fabrication pour emballage pour matériaux fluides

Country Status (3)

Country Link
EP (1) EP0096826B1 (fr)
AT (1) ATE40077T1 (fr)
DE (2) DE3222180C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3601352A1 (de) * 1986-01-18 1987-07-23 Altstaedter Verpack Vertrieb Packung fuer fliessfaehige fuellgueter mit glasendwaenden
GB9616302D0 (en) * 1996-08-02 1996-09-11 Field Group Plc Tubular containers
DE102006032638B4 (de) * 2006-07-13 2010-11-11 Sig Technology Ag Karton/Kunststoff-Verbundpackung mit abziehbarem Deckel und Verfahren zu ihrer Herstellung
DE102022202764A1 (de) 2022-03-21 2023-09-21 Sig Combibloc Services Ag Flüssigkeitsdichter behälter mit keilförmiger boden- oder kopfnaht

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3268145A (en) * 1963-02-25 1966-08-23 Mead Corp Container closing means
EP0074343A2 (fr) * 1981-09-08 1983-03-16 Akerlund & Rausing Licens Aktiebolag Méthode et appareil pour la fabrication d'un récipient avec fond de fermeture intérieur

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Publication number Priority date Publication date Assignee Title
FR413612A (fr) * 1909-11-15 1910-08-13 Alfred Russell Hussey Gobelet à boire
DE415933C (de) * 1923-12-20 1925-07-03 Kustner Freres Cie Sa Verfahren zum Verschliessen von Verpackungen fuer Waren beliebiger Konsistenz
US2238056A (en) * 1938-12-27 1941-04-15 American Can Co Can closing machine
US2940654A (en) * 1958-09-18 1960-06-14 Pillsbury Co Container
DE1205001B (de) * 1960-08-10 1965-11-11 Hesser Ag Maschf Verpackungsbehaelter
FR1284881A (fr) * 1961-03-23 1962-02-16 Jagenberg Werke Ag Récipient conique en papier, carton ou en une matière analogue et son procédé de fabrication
DE1284619B (de) * 1961-11-16 1968-12-05 Kalle Ag Verfahren und Vorrichtung zum Verschliessen von Dosen aus verschweissbaren einschichtigen Kunststoffolien oder Folien mit verschweissbarer Kunststoff-Oberflaechenkaschierung
DE1561995A1 (de) * 1967-12-22 1970-07-23 Benz & Hilgers Gmbh Vorrichtung zum Verschliessen eines becherfoermigen Behaelters aus Papier,Pappe,Kunststoff od.dgl.
GB1275051A (en) * 1968-02-27 1972-05-24 Robinson E S & A Ltd Containers and method of manufacturing them
NL6808754A (fr) * 1968-06-21 1969-12-23
DE2129805A1 (de) * 1971-06-16 1972-12-21 Hamac Hansella Gmbh Verfahren und Vorrichtung zum Verschliessen eines Behaelters mit einem Deckel
JPS50133081A (fr) * 1974-03-28 1975-10-21
US4046306A (en) * 1976-01-02 1977-09-06 The Continental Group, Inc. Composite end panel for can or similar container
US4157147A (en) * 1977-03-30 1979-06-05 Phillips Petroleum Company Container
DE2718574A1 (de) * 1977-04-26 1978-11-02 Honshu Paper Co Ltd Dichtverschluss fuer einen fluessigkeitsbehaelter und verfahren und vorrichtung zu seiner herstellung
US4196841A (en) * 1978-04-07 1980-04-08 Phillips Petroleum Company Laminate and container therefrom
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US4249690A (en) * 1980-01-31 1981-02-10 Container Corporation Of America Composite gas flush can
DE3110697A1 (de) * 1981-03-19 1982-10-07 Robert Bosch Gmbh, 7000 Stuttgart Verpackungsbehaelter
DE3139780A1 (de) * 1981-10-07 1983-04-28 Altstädter Verpackungsvertriebs GmbH, 2000 Hamburg Packung fuer fliessfaehige fuellgueter mit kunststoffdeckel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3268145A (en) * 1963-02-25 1966-08-23 Mead Corp Container closing means
EP0074343A2 (fr) * 1981-09-08 1983-03-16 Akerlund & Rausing Licens Aktiebolag Méthode et appareil pour la fabrication d'un récipient avec fond de fermeture intérieur

Also Published As

Publication number Publication date
EP0096826A1 (fr) 1983-12-28
DE3378965D1 (en) 1989-02-23
ATE40077T1 (de) 1989-02-15
DE3222180A1 (de) 1983-12-15
DE3222180C2 (de) 1995-04-27

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