EP1056645B1 - Verfahren und einrichtung zur herstellung von verpackungen, welche insbesondere zur präsentation und konservierung von nahrungsmitteln geeignet sind - Google Patents

Verfahren und einrichtung zur herstellung von verpackungen, welche insbesondere zur präsentation und konservierung von nahrungsmitteln geeignet sind Download PDF

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Publication number
EP1056645B1
EP1056645B1 EP99904933A EP99904933A EP1056645B1 EP 1056645 B1 EP1056645 B1 EP 1056645B1 EP 99904933 A EP99904933 A EP 99904933A EP 99904933 A EP99904933 A EP 99904933A EP 1056645 B1 EP1056645 B1 EP 1056645B1
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EP
European Patent Office
Prior art keywords
film
shell
flange
plate
shells
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
EP99904933A
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English (en)
French (fr)
Other versions
EP1056645A2 (de
Inventor
Gérard BERCHE
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.)
Aprilis Inc
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Aprilis Inc
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Filing date
Publication date
Application filed by Aprilis Inc filed Critical Aprilis Inc
Publication of EP1056645A2 publication Critical patent/EP1056645A2/de
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Publication of EP1056645B1 publication Critical patent/EP1056645B1/de
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
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/02—Packaging agricultural or horticultural products
    • B65B25/04—Packaging fruit or vegetables

Definitions

  • the present invention relates to a method and to an installation for the manufacture of packaging intended including the presentation and storage of food products, in particular, and not exclusive, for the conservation of fruits or vegetables whose degree of ripening changes rapidly over time, said packaging which also preserves these products from direct shocks or pressures, detrimental to their conservation.
  • Such packages generally consist of a outer shell formed by two trays or half-shells rigid or semi-rigid, joined together by their peripheral edges or flanges according to a junction plane common, this hull internally comprising a space of confinement formed between two flexible deformable films conforming to the shape of the products to be packaged.
  • the two constituent parts of the shell are made by forming or molding two footprints, or half-shells, in a plastic material, half-shells which are assembled to each other by welding, sealing, fusion or ultrasound, or even by gluing or stapling, while the containment space is formed between two flexible plastic films transparent or translucent, such as films of polyethylene drawn, tinted or not.
  • the known packaging consists of two plastic half-shells in the form of trays each having a bottom, a side wall and a peripheral flange at the free edge of their wall lateral, said half-shells each defining a cavity and being joined to each other by their flange, said packaging containing a confinement space, the configuration is substantially complementary to that of the or products to be packaged.
  • the present invention relates to a method and a plant for continuous manufacturing or sequential of such packages.
  • the stretch film prior to its installation on said half-shell, is stretched in the width direction (i.e. the width of the polymer film strip) and transverse to this direction, before the operation of deformation.
  • the process according to the invention uses the creation of a partial vacuum to maintain, in the desired configuration, the deformed film as long as the two half-shells are not assembled on along their flange and that we then break this vacuum partial, quite different from the technique work, for example, in WO 89 03789 where one breathes, in a hermetically sealed package, an inert gas vis-à-vis of the food product contained in said packaging.
  • the installation for manufacturing the half-shells of containment is characterized in that it has the characteristics a) - e) according to claim 5.
  • the method and the installation according to the invention are intended for continuous or sequential manufacturing packaging formed, on the one hand, by an outer shell intended to protect packaged products from shocks and pressures, and, on the other hand, a space of containment, of the alveolus type, in which are housed manually the products to be packaged.
  • packaging can in particular, but it does not this is just an example, assign the shape of that illustrated in figure 1.
  • the packaging consists of two half-shells, 1 and 2, in the form of rigid trays or semi-rigid each having a bottom and a wall side finished with a peripheral flange making protruding towards the outside of the hull. These two half-shells 1 and 2 are superimposed and joined together by their peripheral flange according to a common junction plane 3.
  • the two half-shells 1 and 2 are produced by forming or molding two impressions of a material plastic.
  • the containment space 4 is defined by two synthetic films 5 and 6 shaped according to a alveolar configuration, each alveolus having a shape substantially corresponding to that of a product to condition, so that the superposition of the two half-shells 1 and 2 create one or more housings whose shape is complementary to that of the product or products to be packaged.
  • the space or volume of confinement is produced by placing on the cavity and the peripheral flange of each half-shell 8 a stretch film 27, in the previously stretched state, and that it is mechanically deformed by conforming this film 27 according to a particular profile in order to print a alveolar configuration whose shape follows the periphery of the product to be packaged.
  • the hollow thus created during the operation of deformation stabilizes and this configuration is maintained by pressure balancing, i.e. by the internal pressure of the area between the film 27 and the half-shell 8 and the surrounding external pressure.
  • the film 27 is then cut along the periphery of the flange and the half-shells 8 can then be paired after having been manually housed in the alveoli of the containment space for the products to be packaged.
  • the two half-shells 8 applied one on the other, flange 81 against flange 81, can be welded, for example by ultrasound.
  • the installation for implementing the process manufacture of the containment half-shells according to the invention consists of at least one unit of conformation, essentially comprising a conveyor 7 supplying half-shells 8, and a mobile crew 9 in vertical translation or in rotation (barrel) and ensuring the deformation of the film.
  • the conveyor can be a table 7, formed of a horizontal plate coupled to the head of a jack 10 by a pin 11 whose head comes be housed in a groove 12 provided in the half-shell 8 which rest on this table.
  • the moving assembly 9 is formed by an associated plate 13 to a plate 14 on which are fixed, in the example considered, two shaping tools 15, this plate 13 being mounted vertically movable on columns of guide 16 and subjected to the action of return springs 17. More specifically, the plate 13 is subjected to the action of a cylinder 28.
  • the plate 13 comprises at least four holes, two for the passage of the guide columns 16 and two for the free sliding of two pins 18 connecting the plate 14 support for shaping tools on plate 13.
  • Pins 18 are screwed by their end 181 into the plate 14 support for shaping tools and their opposite end 182 consists of a head forming a stop defining a peripheral shoulder which rests on a ring or bearing 19, spiral springs 20 being engaged sandwich between plate 14 tool holder conformation and the plate 13 to serve as means of reminder.
  • the guide columns 16 are screwed by one of their ends 160 in a film presser frame 21, while their other end 161, like the pins 18, includes a head forming a stop bearing on rings or bearings 22 used to guide the plate 13, during its alternative movements.
  • the shaping tools 15 are here shaped hemispherical and have a tenon 23 on their flat face coming to be housed in an opening 24 of the plate 14, said shaping tools 15 being held in place by studs 25 screwed into blind holes 26 provided in shaping tools 15.
  • the operating cycle of this unit manufacturing is as follows.
  • a film 27 (fig. 2) previously stretched in both orthogonal directions.
  • This film is obtained from a transparent or translucent plastic material of the kind polyethylene and it is perfectly deformable by stretching.
  • actuator 28 is actuated, which causes the sliding of the plate 13 on its columns 16 with compression of return springs 17 (fig.3) At this point, the relative position of the plate 14 tool support conformation is not modified compared to the plate 13.
  • the deformation of the film 27 by the tools of conformation gradually expels the air between the film 27 and the bottom of the half-shell 8, with for result creating a depression that keeps the film in its deformed configuration and prevents it from resuming gradually its plane configuration once the tools of conformation noted.
  • the machine cycle is calculated so that the edge of the film 27 come to rest on the flange 81 (fig. 2) of the half-shell 8 with a slight delay in the deformation of the film 27 so that the air has time to be expelled at the level of this flange before the sealing is done by adhesion film 27 on said flange 81.
  • the horizontal table 7 moves vertically with respect to the moving element 9, by deployment of its jack 10 urging upwards, not only the half-shell 8, but also the plate 14 support for shaping tools.
  • the plate 14 At the end of stroke of the jack 10, the plate 14 is in high position, its return springs 20 being compressed, and the film 27 comes into contact with the heating knife 29 carried by the frame 30 and cutting the film 27 outside of the adhesion zone of said film 27 to the flange of the half-shell 8.
  • the moving assembly 9 is returned to the retracted position waiting by respective relaxation of the return springs 17 and 20 of the plate 13 and of the plate 14 tool support conformation.
  • Ejection or evacuation of the half-shell, as well doubled with its film 27, can then be made with a view to the installation of a new half-hull.
  • the film 27 is routed and stretched by conventional belt systems and that depending on the form of the product to be packaged, replace the shaping tools 15, here hemispherical, other forms of shaping tools, especially in case we want to pack other products or objects.
  • This operation is carried out by perforating each of the two half-shells using a hot rod or by ultrasonic drilling.
  • the invention is not limited to the example of embodiment described above and it is obvious that the nature of the materials constituting the hulls or again that of the film, even the shape of the tools of conformation, could vary without changing anything to the object essential of the invention.
  • a flange length could be common to two half-shells with line of middle folding, so that such half-shells could simultaneously be provided with their film of containment.
  • this expression is not to be taken in the strict sense. In effect, the junction plane of the joined hull parts is not necessarily median so that said parts are not necessarily symmetrical.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Buffer Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Packaging Frangible Articles (AREA)
  • Vacuum Packaging (AREA)

Claims (10)

  1. Verfahren zur Herstellung einer Verpackung, die insbesondere für die Aufmachung und Lagerung von Nahrungsmittelprodukten bestimmt ist und aus zwei Schalenhälften (1, 2; 8) aus Kunststoff besteht, die die Form von Behältern an nehmen, die jeweils einen Boden, eine Seitenwand und einen Umfangsflansch (81) auf Höhe des freien Randes ihrer Seitenwand besitzen, wobei die Schalenhälften (1, 2; 8) jeweils einen Hohlraum abgrenzen und mit ihren Flanschen (81) aneinandergefügt sind, wobei diese Verpackung einen Einschließungsraum (4) umschließt, dessen Ausformung zur der des oder der zu verpackenden Produkte im wesentlichen komplementär ist, dadurch gekennzeichnet, dass es darin besteht, dass man
    a) den Hohlraum jeder der schalenhälften (1, 2; 8) mit einer vorgespannten dehnfähigen Folie (27) bedeckt,
    b) die Folie (27) mit Hilfe mindestens eines Formungswerkzeugs (15), das im wesentlichen die Form eines zu verpakkenden Produkts besitzt, mechanisch so verformt, dass man eine zelle mit der gewünschten Form erhält,
    c) in dem zwischen der Folie und dem Boden der Schalenhälfte (1, 2; 8) abgegrenzten Bereich ein Teilvakuum herstellt,
    d) die Folie an dem Flansch (81) befestigt und die Folie (27) auf Höhe oder außerhalb des freien Randes des Flansches abschneidet,
    und nach Einlegen des oder der Produkte in die auf diese Weise in der Folie (27) einer Schalenhälfte geschaffene Zelle bzw. geschaffenen Zellen und nach Bedecken der Einheit mit einer anderen Schalenhälfte mit ähnlichem Aufbau, wobei Flansch an Flansch liegt,
    e) die zusammengefügten Flansche (81) miteinander fest verbindet.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass man die dehnfähige polie (27) vor dem Verformungsschritt in Richtung der Bahnbreite und quer zu dieser Richtung spannt.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass man das Teilvakuum der Schalenhälften (1, 2; 8) nach ihrer Vereinigung Flansch an Flansch aufhebt.
  4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass man das Teilvakuum durch Perforierung der Schalenhälften (1, 2; 8) aufhebt.
  5. Anlage zur Durchführung des Verfahrene nach Anspruch 1, dadurch gekennzeichnet, dass sie folgendes umfasst:
    a) eine Einrichtung zum Aufbringen einer vorgespannten dehnfähigen Folie (27) auf den Hohlraum jeder der Schalenhälften (1, 2; 8),
    b) mindestens ein Formungswerkzeug (15), das im wesentlichen die Form eines zu verpackenden Produkts besitzt und dafür ausgelegt ist, die Folie (27) mechanisch zu verformen und in dem zwischen dieser Folie und dem Boden der Schalenhälfte (1, 2; 8) abgegrenzten Bereich ein Teilvakuum zu erzeugen, indem ein Teil der Luft dieses Bereichs ausgetrieben wird,
    c) eine Einrichtung zur Befestiqung der Folie an dem Flansch (81) und zum Abschneiden der Folie (27) auf Höhe oder außerhalb des freien Randes des Flansches, und
    d) eine Einrichtung zum Auflegen einer anderen Schalenhälfte mit ähnlichem Aufbau Flansch an Flansch,
    e) eine Einrichtung zur Befestigung der zusammengefügten Flansche (81) aneinander.
  6. Anlage nach Anspruch 5, dadurch gekennzeichnet, dass sie eine Formungseinheit (9) aufweist, die aus einer Formungswerkzeuge (15) tragenden Platine (14) besteht, die bezüglich einer Platte (13) zur Steuerung der Formungswerkzeuge (15) beweglich montiert ist, welche ihrerseits, in einer Richtung, der Einwirkung einer Kolbenzylindereinheit (28) und, in der anderen Richtung, der Einwirkung von Rückholorganen (17) ausgesetzt ist, wobei diese Platte (13) auf Pührungssäulen (16) gleitet und in mindestens zwei Endstellungen gebracht werden kann, deren eine eine Wartestellung ist, in der die Steuerkolbenzylindereinheit (28) eingezogen ist und die Rückholorgane (17) entspannt sind, und deren andere eine Arbeitsstellung ist, die der Phase der Verformung der dehnfähigen Folie (27) entspricht, in der die Platte (13) in der unteren Stellung ist, wobei die Kolbenzylindereinheit (28) ausgefahren ist und die Rückholorgane (17) komprimiert sind.
  7. Anlage nach Anspruch 6, dadurch gekennzeichnet, dass die Führungssäulen (16) der Steuerplatte (13) einen Rahmen zum Andrücken der Folie (27) tragen, wobei Federn (17) diesen Rahmen (21) in Richtung seiner Entfernung von der Platte (13) beaufschlagen.
  8. Anlage nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die Formungswerkzeuge (15) tragende Platine (14) mit der Steuerplatte (13) durch Bolzen (18) verbunden ist, die in der Platte (13) gleiten können, wobei die Platine (14) durch Rückholfedern (20) in Richtung ihrer Entfernung von der Platte (13) beaufschlagt ist.
  9. Anlage nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass ein mit der Platte (13) fest verbundener Rahmen (30) ein Messer (29) trägt, dessen Größe und Geometrie im wesentlichen denen des freien Randes des Flansches (81) der Schalenhälfte (1, 2; 8) entsprechen.
  10. Anlage nach Anspruch 9, dadurch gekennzeichnet, dass sie einen horizontalen Tisch (7) zur Aufnahme der schalenhälften (1, 2; 8) aufweist, der der Einwirkung einer einfach wirkenden Kolbenzylindereinheit (10) ausgesetzt ist, die die Bewegung der Schalenhälfte in Richtung auf das Messer (29) gewährleistet.
EP99904933A 1998-02-23 1999-02-23 Verfahren und einrichtung zur herstellung von verpackungen, welche insbesondere zur präsentation und konservierung von nahrungsmitteln geeignet sind Expired - Lifetime EP1056645B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9802133 1998-02-23
FR9802133A FR2775253B1 (fr) 1998-02-23 1998-02-23 Procede et installation pour la fabrication d'emballages destines notamment a la presentation et la conservation de produits alimentaires
PCT/FR1999/000400 WO1999042366A2 (fr) 1998-02-23 1999-02-23 Procede et installation pour la fabrication d'emballages destines notamment a la presentation et la conservation de produits alimentaires

Publications (2)

Publication Number Publication Date
EP1056645A2 EP1056645A2 (de) 2000-12-06
EP1056645B1 true EP1056645B1 (de) 2002-06-12

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EP99904933A Expired - Lifetime EP1056645B1 (de) 1998-02-23 1999-02-23 Verfahren und einrichtung zur herstellung von verpackungen, welche insbesondere zur präsentation und konservierung von nahrungsmitteln geeignet sind

Country Status (5)

Country Link
EP (1) EP1056645B1 (de)
AT (1) ATE219005T1 (de)
DE (1) DE69901791D1 (de)
FR (1) FR2775253B1 (de)
WO (1) WO1999042366A2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2836900B1 (fr) 2002-03-11 2005-01-07 Velfor Plast Sa Procede de conditionnement en suspension de produits divers et les emballages obtenus
DE10241908A1 (de) * 2002-09-06 2004-03-11 Hagmann Maschinenbau Ag Heisssiegelmaschine zum Verpacken von Produkten, insbesondere von Lebensmitteln
FR2913003B1 (fr) 2007-02-26 2011-04-01 Simagec Dispositif et procede d'emballage et de conditionnement en compression d'objets, notamment fragiles
EP2441683B1 (de) * 2010-10-12 2012-12-12 MULTIVAC Sepp Haggenmüller GmbH & Co KG Verschließstation und Verfahren zum Schneiden einer Deckelfolie

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438089A (en) * 1946-08-27 1948-03-16 Wingfoot Corp Packaging
US2918767A (en) * 1954-03-02 1959-12-29 Swift & Co Packaging apparatus
DE2259547A1 (de) * 1972-12-05 1974-06-12 Lissmann Alkor Werk Verfahren zur herstellung einer packung
JPH02501918A (ja) * 1987-10-29 1990-06-28 ガーウッド・リミテッド 改良されたパッケージング
DE69024963T2 (de) * 1989-08-30 1996-09-19 Seawell Corp Nv Verfahren und vorrichtung zum verpacken verderblicher güter

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Publication number Publication date
WO1999042366A3 (fr) 2001-01-04
DE69901791D1 (de) 2002-07-18
FR2775253A1 (fr) 1999-08-27
ATE219005T1 (de) 2002-06-15
WO1999042366A2 (fr) 1999-08-26
EP1056645A2 (de) 2000-12-06
FR2775253B1 (fr) 2000-05-26

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