EP3643624B1 - Machine d'emballage dotée d'un outil de scellage à dôme - Google Patents

Machine d'emballage dotée d'un outil de scellage à dôme Download PDF

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Publication number
EP3643624B1
EP3643624B1 EP19190240.2A EP19190240A EP3643624B1 EP 3643624 B1 EP3643624 B1 EP 3643624B1 EP 19190240 A EP19190240 A EP 19190240A EP 3643624 B1 EP3643624 B1 EP 3643624B1
Authority
EP
European Patent Office
Prior art keywords
dome
sealing
packaging machine
sealing tool
retaining element
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.)
Active
Application number
EP19190240.2A
Other languages
German (de)
English (en)
Other versions
EP3643624A3 (fr
EP3643624A2 (fr
Inventor
Luciano Capriotti
Stefan Dürmeier
Thomas Zedelmaier
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.)
Multivac Sepp Haggenmueller GmbH and Co KG
Original Assignee
Multivac Sepp Haggenmueller GmbH and Co KG
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 Multivac Sepp Haggenmueller GmbH and Co KG filed Critical Multivac Sepp Haggenmueller GmbH and Co KG
Publication of EP3643624A2 publication Critical patent/EP3643624A2/fr
Publication of EP3643624A3 publication Critical patent/EP3643624A3/fr
Application granted granted Critical
Publication of EP3643624B1 publication Critical patent/EP3643624B1/fr
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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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
    • B65B7/164—Securing by heat-sealing
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/50—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins
    • B65B11/52—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins one sheet being rendered plastic, e.g. by heating, and forced by fluid pressure, e.g. vacuum, into engagement with the other sheet and contents, e.g. skin-, blister-, or bubble- packaging
    • 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
    • B65B25/001—Packaging other articles presenting special problems of foodstuffs, combined with their conservation
    • 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
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • 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
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/025—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers
    • B65B31/028—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers closed by a lid sealed to the upper rim of the container, e.g. tray-like container
    • 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
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/02—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved with means for heating the material prior to forming
    • 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
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material

Definitions

  • the present invention relates to a packaging machine with a dome sealing tool.
  • So-called dome sealing tools are used in packaging machines, and in particular in tray sealing machines, to produce skin packs, for example in the EP 2815983 A1 disclosed.
  • Machines for the production of skin packaging in which a dome-shaped upper part of the sieving tool is used, which is convexly curved in its edge area, go, for example, from the WO2017 / 125282A2 or from the post-published EP3450328A1 emerged.
  • the skin foils must be sucked up into a heated dome in the upper part of the sealing tool so that the skin foil on the heated inside of the dome can be heated to the temperature that is necessary so that the skin foil adheres closely to the product and also to the after the skin process On the inside of the shell, creating an airtight connection.
  • Too low a temperature can lead to insufficiently elastic skin film and also to poor adhesion to the inner surfaces of the pack during the skin process. This problem is also exacerbated with particularly tall products, since the available area has to be stretched all the more into the dome. In order to be able to generate this stretching of the skin film into the dome without cracking, especially at the transition from a sealing surface to the dome, this process should not take place too quickly or suddenly, which has a negative effect on the process time of the sealing process and thus negatively on the machine performance. Furthermore, it has been found in practice that in such cases small folds can form on the edge of the shell, i.e. the area in which the dome sealing tool also seals the skin film with its sealing surface onto the edge of the shell.
  • the object of the present invention is therefore to provide an improved packaging machine for wrinkle-free packaging of tall products in a tray or on a product base with a skin film, without negatively affecting the machine performance.
  • a packaging machine in particular a tray closing machine, comprises a sealing station, the sealing station comprising a sealing tool upper part with at least one dome sealing tool, the dome sealing tool having a circumferential sealing surface and a dome protruding upwards into the interior of the dome sealing tool, wherein Both the sealing surface and a dome surface are designed to be heatable by means of heating elements provided in the dome sealing tool.
  • the packaging machine is characterized in that a holding element is provided between the sealing surface and the dome surface, which is configured to hold a skin film when the skin film is deep-drawn into the dome. This has the positive effect that the skin film is not or only slightly stretched in the area of the sealing surface and wrinkles are avoided on the edge of the tray during the subsequent sealing.
  • the holding element is made of silicone, rubber, PEEK (polyetheretherketone) or an elastomer in order to ensure the holding function and also a heat insulation function.
  • the holding element is preferably arranged parallel to the sealing surface in order to always hold the skin film at the same point opposite the sealing surface when it is deep-drawn into the dome. This is also beneficial in avoiding wrinkles in the seal seam.
  • the holding element is preferably arranged circumferentially to the sealing surface, so that the skin film is held over the entire circumference.
  • the thermal insulation function of the holding element prevents cracking in the transition area from the sealing surface to the dome surface even in the event of a sudden deep-drawing process of the skin film in the dome, since the skin film is not heated too much at this point as in the prior art.
  • the holding element is fixed in a groove of the dome sealing tool, which allows a simple structural and manufacturing design.
  • the holding element preferably has a width of 3 to 15 mm, in particular a width of 6 to 10 mm, on the one hand to ensure a sufficient holding function and on the other hand to keep the less heated area as small as possible.
  • the holding element advantageously has a high coefficient of friction in order to be able to hold various designs of skin foils sufficiently for the deep-drawing process.
  • the holding element has a curved contour in order to reinforce the holding effect.
  • Figure 1 shows a packaging machine 1 according to the invention in the form of a tray closing machine comprising a sealing station 20 with a sealing tool upper part 2 in order to wrap several trays 3 at the same time with a skin film 5 (see FIG Figure 2 ) to close.
  • FIG. 2 shows a schematic view of a sealing tool upper part 2 according to the prior art in section.
  • the sealing tool upper part 2 has two dome sealing tools 30, each with a cutting knife 4 arranged thereon.
  • FIG. 3 shows an evacuation process in the dome sealing tools 30, shown with arrows, in which the atmosphere is evacuated from the space above the skin film 5 and below a dome 7 of the dome sealing tool 30 by means of a vacuum generator, not shown in detail.
  • the skin film 5 is stretched or deep-drawn and, at the beginning of this process, is already in contact with a transition area 8 from a sealing surface 9 of the dome sealing tool 30 and an inner dome surface 10.
  • the dome sealing tool 30 has a plurality of heating elements 11 in order to heat the dome sealing tool 30 both on the sealing surface 9 and on the dome surface 10. Surface temperatures of up to 250 ° C. are provided in order to be able to bring the skin film 5 to the temperature required for the sealing process.
  • the skin film 5 comes into contact with the transition area 8, which is also heated, at the beginning of the evacuation process.
  • the skin film 5 is heated there while the skin film 5 is stretched in the direction of Cathedral 7 lasts. The consequence of this is that the skin film 5 can tear, especially at the transition area 8, as a result of the material taper if the stretching or deep-drawing takes place too quickly or too strongly.
  • Figure 4 shows the skin film 5 lying against the dome surface 10 at the end of the evacuation process. In this phase, the skin film 5 is heated to the temperature required for a skin process.
  • FIG 5 an embodiment according to the invention of a sealing tool upper part 2 with a dome sealing tool 30 is shown.
  • a holding element 12 is provided in the transition area 8.
  • the holding element 12 is arranged circumferentially and parallel to the sealing surface 9 on the dome sealing tool 3.
  • the holding element 12 has a width B of 3 to 15 mm.
  • the connection from the holding element 12 to the dome sealing tool 30 can be, for example, an adhesive connection, or a circumferential groove 13 is provided in the dome sealing tool 30, in which the holding element 12 can be fixed by clamping or adhesive.
  • the holding element 12 is preferably designed to be heat-insulating, for example made of silicone or a silicone composite material, so that the skin film 5 is not, slightly or less heated than in the prior art during the first contact with the dome sealing tool 3 in the transition area 8.
  • the performance of the packaging machine is increased because the evacuation process can be carried out quickly and not reduced as in the prior art.
  • Another positive effect of the holding element 12 is the adhesion of the skin film 5 to the holding element 12, which means that the expansion in this area is less and the formation of creases on a sealing flange of the tray 3 can be reduced or prevented during the sealing process.
  • the reason for this lies in the adhesion of the skin film 5 to the holding element 12, as a result of which the stretching area in the dome 7 and under the sealing surface 9 is separated and the skin film 5 only undergoes a strong stretch in the dome 7, which is also strong for the skin process, as in FIG Figure 6 shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Closing Of Containers (AREA)
  • Package Closures (AREA)

Claims (8)

  1. Machine d'emballage (1) avec un poste de scellage (20), dans laquelle le poste de scellage (20) comprend une partie supérieure d'outil de scellage (2) avec au moins un outil de scellage à cloche (30), dans laquelle l'outil de scellage à cloche (30) présente une surface de scellage (9) périphérique et une cloche (7) pointant vers le haut à l'intérieur de l'outil de scellage à cloche (3), dans laquelle à la fois la surface de scellage (9) et une surface de cloche (10) peuvent être chauffées au moyen d'éléments chauffants (11) prévus dans l'outil de scellage à cloche (30), dans laquelle un élément de maintien (12), prévu entre la surface de scellage (9) et la surface de cloche (10), est configuré pour maintenir un film formant peau (5) avant ou pendant l'emboutissage du film formant peau (5) dans la cloche (7), caractérisée en ce que l'élément de maintien (12) est réalisé en silicone, en caoutchouc, en PEEK ou en élastomère.
  2. Machine d'emballage (1) selon la revendication 1, caractérisée en ce que l'élément de maintien (12) est agencé parallèlement à la surface de scellage (9).
  3. Machine d'emballage selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de maintien (12) est agencé de manière périphérique par rapport à la surface de scellage (9).
  4. Machine d'emballage (1) selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de maintien (12) est immobilisé dans une rainure (13) de l'outil de scellage à cloche (30).
  5. Machine d'emballage (1) selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de maintien (12) présente une largeur (B) comprise entre 3 et 15 mm.
  6. Machine d'emballage (1) selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de maintien (12) présente un coefficient de frottement élevé.
  7. Machine d'emballage (1) selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de maintien (12) présente un contour incurvé.
  8. Machine d'emballage selon l'une quelconque des revendications précédentes, caractérisée en ce que la machine d'emballage (1) est une operculeuse de barquettes.
EP19190240.2A 2018-10-26 2019-08-06 Machine d'emballage dotée d'un outil de scellage à dôme Active EP3643624B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018218382.1A DE102018218382A1 (de) 2018-10-26 2018-10-26 Verpackungsmaschine mit einem domsiegelwerkzeug

Publications (3)

Publication Number Publication Date
EP3643624A2 EP3643624A2 (fr) 2020-04-29
EP3643624A3 EP3643624A3 (fr) 2020-08-12
EP3643624B1 true EP3643624B1 (fr) 2021-12-08

Family

ID=67551148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19190240.2A Active EP3643624B1 (fr) 2018-10-26 2019-08-06 Machine d'emballage dotée d'un outil de scellage à dôme

Country Status (3)

Country Link
EP (1) EP3643624B1 (fr)
DE (1) DE102018218382A1 (fr)
ES (1) ES2908617T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022110134A1 (de) 2022-04-27 2023-11-02 Multivac Sepp Haggenmüller Se & Co. Kg VERFAHREN ZUM VERPACKEN VON PRODUKTEN UND VERSCHLIEßSTATION FÜR VERPACKUNGEN

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2271546A (en) * 1992-10-19 1994-04-20 Grace W R & Co Vacuum packaging chamber and method
AU2008277996B2 (en) * 2007-07-16 2013-11-14 Cryovac, Llc Vacuum skin packaging method and apparatus
ES2605156T3 (es) * 2011-12-09 2017-03-13 Gea Food Solutions Germany Gmbh Máquina embaladora con una herramienta de moldeo y sellado combinada
AU2014264668B2 (en) * 2013-05-07 2017-10-19 Cryovac, Llc Apparatus and process for packaging a product.
DE102013010221A1 (de) 2013-06-18 2014-12-18 Jörg von Seggern Maschinenbau GmbH Verfahren zum Versiegeln von Schalen mit Folie und Vorrichtung zum Versiegeln von Schalen mit Folie
ES2875501T3 (es) * 2016-01-20 2021-11-10 Gea Food Solutions Germany Gmbh Herramienta de sellado, máquina de envasado y procedimiento para fabricar un envase al vacío de tipo skin
IT201700043166A1 (it) * 2017-04-19 2018-10-19 Cryovac Inc Apparecchiatura e procedimento di confezionamento di prodotti
EP3450328A1 (fr) * 2017-08-31 2019-03-06 MULTIVAC Sepp Haggenmüller SE & Co. KG Machine d'emballage dotée d'un outil de coupe

Also Published As

Publication number Publication date
DE102018218382A1 (de) 2020-04-30
EP3643624A3 (fr) 2020-08-12
ES2908617T3 (es) 2022-05-03
EP3643624A2 (fr) 2020-04-29

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