EP2347972A1 - Emballage refermable - Google Patents

Emballage refermable Download PDF

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Publication number
EP2347972A1
EP2347972A1 EP11151841A EP11151841A EP2347972A1 EP 2347972 A1 EP2347972 A1 EP 2347972A1 EP 11151841 A EP11151841 A EP 11151841A EP 11151841 A EP11151841 A EP 11151841A EP 2347972 A1 EP2347972 A1 EP 2347972A1
Authority
EP
European Patent Office
Prior art keywords
film
layer
sealing film
packaging according
packaging
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
EP11151841A
Other languages
German (de)
English (en)
Other versions
EP2347972B1 (fr
Inventor
Josef Ferber
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.)
Amcor Flexibles Kreuzlingen AG
Original Assignee
Hochland AG
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 Hochland AG filed Critical Hochland AG
Publication of EP2347972A1 publication Critical patent/EP2347972A1/fr
Application granted granted Critical
Publication of EP2347972B1 publication Critical patent/EP2347972B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2068—Means for reclosing the cover after its first opening
    • B65D77/2096—Adhesive means
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2041—Pull tabs
    • B65D2577/205—Pull tabs integral with the closure

Definitions

  • the invention relates to a resealable package for a product to be packaged, in particular for a present in single portions food, such as in a stack folded cheese or sausage slices, having a provided with an edge strip shell and having a adhering to the edge strip multilayer film lid, wherein the film lid has at least one top film and a sealing strip formed on the edge strip formed as a layer stack, wherein top film and sealing film are connected by means of an adhesive layer, wherein the sealing film has a predetermined breaking line at which the top film of parts of the sealing film dissolves when tearing the package.
  • the invention also relates to a method for packaging such a good and a method for applying a foil lid to a tray for producing such a package.
  • Such resealable film packages are known per se and are used for example for the packaging of wet wipes.
  • the advantage of this packaging is that the contents are protected by the reclosability from dehydration.
  • a foil packaging is for example from the WO 2005/123535 A1 known. This has from above through the top film and from below through the sealing film reaching through predetermined breaking lines in the form of perforations or notches on which dissolves the top film of the sealing film while retaining the area provided with pressure-sensitive adhesive area.
  • a pack with such resealable packaging in a fairly simple embodiment known.
  • the general problem with the hitherto known packaging is that the sealed before the first opening packaging is tight against moisture passage, but that it does not have sufficient tightness to gases, in particular oxygen, nitrogen or CO 2 .
  • This type of packaging is thus hardly suitable for permanently protecting perishable foods such as sausage or cheese. This is especially true because such foods are usually packed in a gas atmosphere and it is particularly important for the durability that the protective gas escapes as possible.
  • Object of the present invention is first to propose a resealable packaging high gas density, which can be produced by simple means that provides the goods packed therein great protection and is easy and comfortable to use by the user.
  • the invention is initially based on the essential idea that the top film forms a reliably stabilizing layer, the film lid a mechanical stiffness gives.
  • This requirement is inventively realized in that the top film is consistently homogeneous and has no predetermined breaking line to the outer edge of the edge strip.
  • This over the entire packaging "uninjured" top film offers the highest possible stability.
  • the top film can be formed by a single stable layer, for example made of plastic or paper, which can additionally be product-printed with a label and / or lacquered.
  • the further inventive concept lies in the special distribution of different adhesives within the adhesive layer.
  • This distribution is such that the adhesive layer has an inner central region, in which the upper film is adhesively bonded permanently to the sealing film by means of a permanent adhesive.
  • an outer edge region is further provided, in which, at least in the sections where the top film is to be detached from the sealing film, top film and sealing film are adhesively and reclosably glued to one another by means of a pressure-sensitive adhesive, in particular a PSA ("Pressure Sensitive Adhesive").
  • PSA Pressure Sensitive Adhesive
  • the predetermined breaking line in the film stack of the sealing film is now provided between the edge region and the central region, so that the permanent adhesive is located within the predetermined breaking line and the pressure-sensitive adhesive is outside the predetermined breaking line.
  • the predetermined breaking line would thus correspond to the boundary between the pressure-sensitive adhesive and the permanent adhesive. It is important to ensure that the predetermined breaking line does not hit the edge area provided with pressure-sensitive adhesive. It would, however, be unproblematic if it opens at the outer edge of the central area and thus still a little in the permanent adhesive. In this way, when tearing open the packaging, the top film with the sealing film in the central area remains arrested.
  • the predetermined breaking line according to the invention is formed by an embossment introduced in the sealing film, which layer of the Sealing film severed at least to the barrier layer.
  • This can be introduced mechanically or in a particular embodiment from below by means of a laser beam in the stack of top film and sealing film.
  • the packages according to the invention are optimized in terms of their gas density in the original closed state. In this way, a long shelf life of stored in the packaging food is possible.
  • the film stack forming the sealing film has a specially designed barrier layer which has a particular density in relation to the diffusion of oxygen, nitrogen or carbon dioxide.
  • a barrier layer For the construction of such a barrier layer, it is advisable to vaporize a metallization on a plastic layer.
  • an aluminum layer having a thickness of between 5 nm and 10 nm can be evaporated on a layer of PET (polyethylene terephthalate) become. It may be advantageous if this metallization forms the uppermost layer of the sealing film.
  • the predetermined rupture lines are then ideally brought so carefully "from below” to the metallization, that this is not penetrated but at best impressed and thus remains gas-tight.
  • the metallization may be covered by a further layer of polyamide in a particularly advantageous embodiment.
  • the vapor-deposited metallization within the barrier layer can also be replaced by a vapor-deposited oxide layer, in particular a layer of metal oxide, such as AlO x , or a layer of semiconductor oxide, in particular SiO x .
  • a correspondingly larger-sized plastic layer, in particular of polyamide, can be provided as the barrier layer.
  • the "film sandwich”, ie the stack of top film and sealing film are completed in advance as a film composite and can be supplied in a pre-assembled role for further use to the packaging machine.
  • the packaging machine which advantageously also molds and fills the trays during the packaging process, may then, in a step serving to close the trays, cover the filled trays with the prefabricated multilayer composite film and seal them to the edge strips of the trays.
  • Such a procedure is particularly effective and inexpensive.
  • PLA polylactide
  • a multilayer composite film accordingly comprises the top film and the sealing film provided with predetermined breaking lines.
  • Top film and Sealing film are now glued to each other by means of the various adhesive, that in those areas which constitute the central areas in the later finished packaging, a permanent adhesive is present, which connects the upper film and sealing film insoluble.
  • the upper film and the sealing film are detachably and reclosably connected by means of a pressure-sensitive adhesive in the regions which constitute edge regions in the subsequent packaging. Accordingly, tear tabs and connecting portions can be provided from the outset.
  • a packaging method for a particular sliced food such as a stack of cheese or sausage slices, with the following steps: First, in a first step, the composite material used to produce the shells to an arrangement of several over its edge region molded shells.
  • the composite material advantageously has a sealing layer, in particular of polyethylene.
  • the molding is done in particular by a thermoforming process.
  • the shells thus formed are then filled with the food.
  • the still connected and stocked trays are subsequently covered with the prefabricated multilayer composite film and sealed specifically to the edge strip.
  • the filled and closed shells are separated in a cutting process
  • FIG. 1 is first shown a section through a simple reclosable packaging in the closed state without inserted in it to be packaged Good.
  • This packaging comprises a shell 1 made of a composite material with a carrier layer made of plastic or aluminum and has a surrounding edge strip 2.
  • the shell 1 is closed by a multilayer foil lid 3.
  • the closure takes place by means of a seal, wherein a sealing layer 4 located on the edge strip 2 is heat-sealed by means of a sealing seam 5 against a likewise sealable film 14 which covers the foil lid 3 as the lowermost layer.
  • the sealing layer 4 and the film 14 are advantageously made of polyethylene.
  • the foil lid 3 consists of a stabilizing upper foil 6 and a sealing foil 7 lying on the marginal strip 2 by means of the sealing layer 4 and formed as a stack of individual layers. If required, the upper foil 6 can also be of multilayer design.
  • the upper film 1 is a stable carrier layer of oriented respectively stretched polypropylene of a thickness between 38 g / m 2 and 42 g / m 2 .
  • the sealing film 7 is therefore sealed with its underside on the edge region 2 of the shell 1.
  • the upper film 6 is connected to the sealing film 7 by means of an adhesive layer 8, wherein in the sealing film 7, for example by means of a laser beam introduced into the composite film predetermined breaking line 9 is provided at the top film 6 of edge regions of the sealing film 7 dissolves when tearing the package.
  • the predetermined breaking line 9 is formed by an embossment introduced in the sealing film and cuts through the sealing film as far as the barrier layer. It opens at the border between the pressure-sensitive adhesive and the Permanent adhesive.
  • the upper film 6 is homogeneously continuous to the outer edge of the edge strip 2 and accordingly has no predetermined breaking line.
  • the sealing film 7 is a composite of a bottom-lying sealable polyethylene film 14 and an overlying film layer 15 of polyethylene terephthalate (PET).
  • PET polyethylene terephthalate
  • a layer 16 of polyamide is provided above the PET film, through which the predetermined breaking line 9 passes.
  • the adhesive layer 8 has an inner central region 10, in which the upper film 6 is permanently bonded to the sealing film 7 with a permanent adhesive. With this permanent adhesive bonding, the sealing film 7 remains adhered to the upper film 6 within the framework of the central region, as soon as the packaging is opened and is on the predetermined breaking line 9 ( FIG. 2b ).
  • the adhesive layer 8 has an outer edge region 11, with the exception of a connecting portion 12 (FIG. FIG. 5 ) is provided in the edge region a re-closure enabling pressure-sensitive adhesive (PSA, "pressure sensitive adhesive").
  • PSA pressure sensitive adhesive
  • the embodiments described are provided with a barrier layer forming metallization 17, which is vapor-deposited as a thin film on the underlying PET film layer 15.
  • the packages are each shown in the opened state, in which the layer formed by the pressure-sensitive adhesive has separated into the layers 13a and 13b.
  • the predetermined breaking line 9 formed by laser cutting extends from below to the metallization 17, which is not intended to be completely penetrated.
  • the metallization 17 ruptures at the predetermined breaking line 9 only by the first opening.
  • FIG. 5 now a plan view of a finished package is shown as it is cut out of an arrangement of several packaging.
  • the central area 18, which has the permanent adhesive and is delimited by the predetermined breaking line 19, can be seen.
  • the predetermined breaking line 19 is formed by a laser cut, which extends between the points 20 and 21 around a large part of the central area 18.
  • the laser cut removes the connecting section 12, in which the upper film and the sealing film are permanently connected by means of the permanent adhesive.
  • the edge region 22 indicated by hatching is formed, in which the pressure-sensitive adhesive (PSA) enabling reclosure is provided.
  • PSA pressure-sensitive adhesive
  • the upper film forms a tear-open tab 23, wherein no adhesive is present between the sealing film and the tear-off tab formed by the upper film, but the sealing film is sealed to the edge region.
  • the tear tab 23 can be easily lifted.
  • the area of the circumferential seal between shell and sealing film is designated by 24. Not shown trough-like depressions can be introduced in the edge region of the shell, which form due to the recessed bottom against the edge of the seal excluded area. In this way, the tearing of the sealing film is simplified.
  • FIG. 6 For example, there is shown a prefabricated multilayer composite film for application to six preformed shells in this case.
  • the edge areas 26 connected by means of pressure-sensitive adhesive are represented.
  • the still connected and stocked trays are covered with this prefabricated multilayer composite film and sealed targeted to the edge strip 27. Finally, the filled and closed shells are separated in a cutting process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
EP11151841.1A 2010-01-22 2011-01-24 Emballage refermable Active EP2347972B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010005554A DE102010005554A1 (de) 2010-01-22 2010-01-22 Wiederverschließbare Verpackung

Publications (2)

Publication Number Publication Date
EP2347972A1 true EP2347972A1 (fr) 2011-07-27
EP2347972B1 EP2347972B1 (fr) 2021-09-22

Family

ID=43877011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11151841.1A Active EP2347972B1 (fr) 2010-01-22 2011-01-24 Emballage refermable

Country Status (3)

Country Link
EP (1) EP2347972B1 (fr)
DE (2) DE102010005554A1 (fr)
ES (1) ES2899659T3 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015085041A1 (fr) * 2013-12-06 2015-06-11 Sonoco Products Co. Boîte-saupoudroir et membrane de boîte-saupoudroir pouvant être ôtée par décollement
WO2016131742A1 (fr) 2015-02-20 2016-08-25 Amcor Flexibles Burgdorf Gmbh Emballage refermable
WO2016131740A1 (fr) 2015-02-20 2016-08-25 Amcor Flexibles Burgdorf Gmbh Emballage refermable
WO2016131741A1 (fr) 2015-02-20 2016-08-25 Amcor Flexibles Burgdorf Gmbh Emballage refermable
EP3159280A1 (fr) 2016-01-14 2017-04-26 Amcor Flexibles Burgdorf GmbH Emballage refermable
WO2019079133A1 (fr) * 2017-10-16 2019-04-25 Sonoco Development, Inc. Operculage refermable à adhésif à motif
US10661548B2 (en) 2015-11-25 2020-05-26 Tarkett Gdl Method for producing a resilient floor covering with a printed decorative layer
WO2020225618A1 (fr) * 2019-05-09 2020-11-12 K.Gkikas & Co Lp Rabats multicouches à segment amovible et leur procédé de production

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996018555A1 (fr) * 1994-12-13 1996-06-20 Regath Hb Receptacle refermable
WO2001004020A1 (fr) 1999-07-08 2001-01-18 Fredin Sten Inge Matiere et procede permettant de former un couvercle sur un emballage
EP1103488A1 (fr) 1999-11-26 2001-05-30 Danisco Flexible France Feuille d'emballage refermable et emballage refermable la comportant
US20050276525A1 (en) * 2004-06-11 2005-12-15 Sonoco Development, Inc. Flexible packaging structure with a built-in opening and reclose feature, and method for making same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2551031B1 (fr) * 1983-08-24 1986-07-04 Alsacienne Aluminium Recipient a ouverture par pelage et procede de production des elements de fermeture de tels recipients
US4735335A (en) * 1985-08-06 1988-04-05 Etude Et Realisation De Chaines Automatiques-E.R.C.A. Composite band for lids for thermoplastic containers
JPS62208375A (ja) * 1986-03-06 1987-09-12 東洋アルミニウム株式会社 密封容器の蓋材
JP2575770B2 (ja) * 1988-01-18 1997-01-29 出光石油化学株式会社 易開封性密封容器
DE19523754A1 (de) * 1995-06-29 1997-01-16 Hueck Folien Gmbh & Co Kg Foliendeckel zum Verschließen von Behältern, Folienbahn zur Herstellung solcher Foliendeckel und Verfahren zur Herstellung einer solchen Folienbahn
EP1449789B1 (fr) * 2003-02-19 2007-08-08 Alcan Technology & Management Ltd. Conteneur d'emballage comprenant une feuille d'emballage ayant un système intégré d'ouverture et de refermeture
US7681732B2 (en) * 2008-01-11 2010-03-23 Cryovac, Inc. Laminated lidstock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996018555A1 (fr) * 1994-12-13 1996-06-20 Regath Hb Receptacle refermable
WO2001004020A1 (fr) 1999-07-08 2001-01-18 Fredin Sten Inge Matiere et procede permettant de former un couvercle sur un emballage
EP1103488A1 (fr) 1999-11-26 2001-05-30 Danisco Flexible France Feuille d'emballage refermable et emballage refermable la comportant
US20050276525A1 (en) * 2004-06-11 2005-12-15 Sonoco Development, Inc. Flexible packaging structure with a built-in opening and reclose feature, and method for making same
WO2005123535A1 (fr) 2004-06-11 2005-12-29 Sonoco Development, Inc. Structure d'emballage flexible avec uneouverture incorporée et une fermeture et procédé de realisation

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10494160B2 (en) 2013-12-06 2019-12-03 Sonoco Development, Inc. Peel-away shaker can and can membrane
WO2015085041A1 (fr) * 2013-12-06 2015-06-11 Sonoco Products Co. Boîte-saupoudroir et membrane de boîte-saupoudroir pouvant être ôtée par décollement
US10689172B2 (en) 2013-12-06 2020-06-23 Sonoco Development, Inc. Peel-away shaker can and can membrane
US10486870B2 (en) 2013-12-06 2019-11-26 Sonoco Development, Inc. Peel-away shaker can and can membrane
WO2016131742A1 (fr) 2015-02-20 2016-08-25 Amcor Flexibles Burgdorf Gmbh Emballage refermable
WO2016131740A1 (fr) 2015-02-20 2016-08-25 Amcor Flexibles Burgdorf Gmbh Emballage refermable
WO2016131741A1 (fr) 2015-02-20 2016-08-25 Amcor Flexibles Burgdorf Gmbh Emballage refermable
US10081472B2 (en) 2015-02-20 2018-09-25 Amcor Flexibles Burgdorf Gmbh Reclosable packaging
US10259632B2 (en) 2015-02-20 2019-04-16 Amcor Flexibles Burgdorf Gmbh Reclosable packaging
US10661548B2 (en) 2015-11-25 2020-05-26 Tarkett Gdl Method for producing a resilient floor covering with a printed decorative layer
EP3159280A1 (fr) 2016-01-14 2017-04-26 Amcor Flexibles Burgdorf GmbH Emballage refermable
US10315825B2 (en) 2016-01-14 2019-06-11 Amcor Flexibles Burgdorf Gmbh Reclosable packaging
US10597202B2 (en) 2017-10-16 2020-03-24 Sonoco Development, Inc. Resealable lidding with patterned adhesive
CN111295343A (zh) * 2017-10-16 2020-06-16 实耐格开发公司 带图案化粘合剂的可重新密封的封盖
WO2019079133A1 (fr) * 2017-10-16 2019-04-25 Sonoco Development, Inc. Operculage refermable à adhésif à motif
WO2020225618A1 (fr) * 2019-05-09 2020-11-12 K.Gkikas & Co Lp Rabats multicouches à segment amovible et leur procédé de production

Also Published As

Publication number Publication date
DE102010005554A1 (de) 2011-07-28
EP2347972B1 (fr) 2021-09-22
DE202011109904U1 (de) 2012-07-02
ES2899659T3 (es) 2022-03-14

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