EP3585706B1 - Support multicouche, en particulier destiné à des produits alimentaires - Google Patents

Support multicouche, en particulier destiné à des produits alimentaires Download PDF

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Publication number
EP3585706B1
EP3585706B1 EP18705943.1A EP18705943A EP3585706B1 EP 3585706 B1 EP3585706 B1 EP 3585706B1 EP 18705943 A EP18705943 A EP 18705943A EP 3585706 B1 EP3585706 B1 EP 3585706B1
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EP
European Patent Office
Prior art keywords
blank
support
face
weakened line
peelable film
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
EP18705943.1A
Other languages
German (de)
English (en)
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EP3585706A1 (fr
Inventor
Aldo Pozzoli
Mario MARANI
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.)
Pozzoli SpA
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Pozzoli SpA
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Publication date
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Publication of EP3585706A1 publication Critical patent/EP3585706A1/fr
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Publication of EP3585706B1 publication Critical patent/EP3585706B1/fr
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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
    • B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
    • B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
    • B65D77/2044—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure
    • B65D77/2048—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure whereby part of the container or cover has been weakened, e.g. perforated or precut
    • B65D77/2052—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure whereby part of the container or cover has been weakened, e.g. perforated or precut the container being weakened
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • 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
    • B65D2577/2075—Lines of weakness or apertures
    • B65D2577/2083—Lines of weakness or apertures in container flange

Definitions

  • the present invention relates to a multilayer support particularly for food products, to a package comprising said support and to related manufacturing processes.
  • Patent application FR2976923A1 describes the use of bi-material supports for the packaging of food products such as meat or fish, in which a sheet of rigid cardboard is coated on a first face by a peelable film made of plastic material, which is used to keep the food product separate from the paper material, preventing any contaminations.
  • This cardboard sheet has a pre-cut line which does not affect the peelable film and allows to remove the peelable film completely by tearing manually along the pre-cut line a portion of the cardboard sheet and pulling it so that it drags the peelable film with it. In this manner it is possible to separate the paper part from the plastic part and throw them into separate waste containers for any respective recycling.
  • said support can warp due to the fixing of said second film on the support and the warping may increase while the package is kept in a low-temperature environment such as a refrigerator.
  • the aim of the present invention is to provide a multilayer support particularly for food products, a package comprising said support and corresponding manufacturing processes that are capable of improving the prior art in one or more of the aspects indicated above.
  • an object of the invention is to simplify the removal of the peelable film from the support.
  • Another object of the invention is to improve the full removal of the peelable film from the support.
  • An object of the invention is also to obtain, after peeling, two components (peelable film and card or cardboard blank) that are fully recyclable.
  • the peelable film after peeling is entirely free from paper residues.
  • a further object is to reduce or eliminate the deformations or bends that the support can undergo during the removal of the peelable film and/or during the manufacture or use in the closed state of the package that uses said support.
  • Another object is to reduce the grammage of the card or cardboard blank of the support while retaining its rigidity required for the peeling and/or preservation of the package that uses it.
  • an object of the present invention is to overcome the drawbacks of the prior art in a manner that is alternative to existing solutions.
  • Another object of the invention is to provide a multilayer support particularly for food products, a package comprising said support and corresponding manufacturing processes that are highly reliable, relatively easy to provide and at competitive costs.
  • a multilayer support particularly for food products, comprising a blank made of cardboard or card which is coated on a first face by a peelable film made of plastic material, said first face comprising a weakened line that is covered by said peelable film and is adapted to form on said blank a closed area that is delimited by at least one edge of said blank and by said weakened line, so that said closed area can consequently be torn away from the rest of the blank together with the peelable film, said weakened line being obtained by perforation or scoring performed starting from said first face toward the opposite face of the blank, characterized in that said weakened line is formed by a continuous incision which passes through to the second face only at discrete through portions, at least one of said discrete through portions intersecting said at least one edge of the blank.
  • a package for food products which comprises the above support and a covering film that is fixed on said support, so that the food product is interposed between said covering film and said peelable film.
  • the aim and objects of the invention are also achieved by a method for manufacturing packages of food products, characterized in that it comprises the steps of:
  • a method for manufacturing a multilayer support particularly for food products characterized in that it comprises the steps of:
  • a multilayer support for food products according to the invention is designated generally by the reference numeral 1 and comprises a blank 2 made of cardboard or card, which is coated on a first face 21 by a peelable film 3 made of plastic material, in particular a barrier film suitable for contact with food.
  • the blank 2 can be a sheet made of cardboard or card that is substantially planar and can have a thickness comprised between 100 microns and 490 microns and a grammage comprised between 100 g/m 2 and 500 g/m 2 .
  • the peelable film 3 can have a thickness comprised between 30 microns and 90 microns and is preferably applied exclusively to the first face 21 without covering, even just partially, the second face 22 of the blank 2 that lies opposite the first face 21.
  • the coupling between the blank 2 and the peelable film 3 can occur by means of per se known lamination methods, for example by applying beforehand a layer of adhesive to the face of the peelable film 3 to be coupled to the blank 2.
  • the latter in order to facilitate the full separation of the peelable film 3 from the blank 2, the latter can be treated beforehand so as to have on the first face 21 a separation layer 23 which, during normal use, is interposed between the blank 2 and the peelable film 3, as shown in Figure 4 .
  • Said separation layer 23 comprises a release agent, which can be included in an adapted paint that is spread or sprayed onto the first face 21 of the blank 2 in order to form the separation layer 23.
  • the first face 21 of the blank 2 further comprises a weakened line 4 which, in the support 1, is coated in a "bridging fashion" by the peelable film 3, as shown for example in Figures 2 and 3 .
  • Said weakened line 4 is obtained by perforation or incision provided on the blank 2 before coating it on the first face 21 with the peelable film 3 and exclusively starting from the first face 21 toward the opposite face 22 of the blank 2, so that the material of the blank 2, in the support 1, is spaced from the peelable film 3 on the first face 21 along the entire weakened line region and therefore residues of this material do not remain attached to the film 3 when it is removed from the blank 2.
  • the weakened line 4 renders the blank 2 breakable along said line and is adapted to form on the blank 2 a closed area 11 that is delimited by at least one edge 13 of the blank 2 and by the weakened line 4, so that said closed area 11 can consequently be torn from the rest 12 of the blank 2 together with the entire peelable film 3 and acts therefore as a sort of pull-tab.
  • the closed area 11 corresponds to a corner end of the blank 2, since the weakened line 4 has a direction that crosses two adjacent edges of the blank 2.
  • the closed area 11 which, after peeling, remains attached to the film 3 can be removed completely from the latter manually.
  • the weakened line 4 is formed by a continuous incision 40 along the first face 21 that divides the first face 21 into two planar surfaces that are completely separate at least to a half-cut depth P and exits onto the second face 22 only at discrete through portions 41.
  • At least one end portion 41a intersects an edge 13 of the blank 2. More preferably, the discrete through portions 41a-41b that are located at both ends of the weakened line 4 intersect at least one edge 13 of the blank 2. This characteristic allows to facilitate peeling without residues from the beginning of the operation for removal of the peelable film 3 from the blank 2, since the user tends to tear the closed area 11 starting from one edge 13, wherein said area 11 is already separated from the rest 12 of the blank 2 by virtue of the through cuts 41a-41b.
  • the discrete through portions 41 are interlaid with bridges 42 made of cardboard or card, which are the result of the above cited perforation or incision operation and are meant to keep the blank 2 joined to the closed area 11.
  • bridges 42 made of cardboard or card, which are the result of the above cited perforation or incision operation and are meant to keep the blank 2 joined to the closed area 11.
  • the weakened line 4 may have a rectilinear course along the plane of blank 2, such as in the embodiments of figures 1-12 .
  • the weakened line 4 has a wavy course along the plane of blank 2, e.g. a sinusoidal course or a course corresponding to a series of alternated straight and overturned arcs.
  • the bridges 42 are preferably arranged at the peaks of such wavy course, for example at every other half-wave as showed in Figure 14 .
  • the wavy weakened line 4 of figure 13 is formed by a continuous incision along the blank's first face 21 that divides the first face 21 into two planar surfaces that are completely separate at least to a half-cut depth P and exits onto the blank's second face only at discrete through portions.
  • the discrete through portions that are located at both ends of the wavy weakened line 4 intersect at least one edge 13 of the blank 2.
  • the discrete through portions are interlaid with bridges 42 made of cardboard or card as in the embodiments of Figures 1-12 .
  • the blank 2 comprises relief ribs 5 which are adapted to stiffen the blank 2 during the peeling of the support 1 and/or during the manufacture or storage of the package 6 that uses said support 1.
  • the possibility that the blank 2 might be deformed or bent during peeling and/or that the support 1 might be deformed, warping, during normal use, i.e., when a covering film 61 is applied thereto which retains the food product 62 on the support 1, is prevented or in any case reduced.
  • the relief ribs 5 can be embossed and/or creased regions and can be obtained in a per se known manner directly on the support 1, after the lamination of the blank 2 with the film 3.
  • the relief ribs 5 can be obtained by interposing the multilayer support 1 between a printing plate and a contrast plate (not shown), which are moved mutually closer in order to impress in relief the ribs 5, which are consequently in relief on the multilayer support 1 and on the first face 21 and are recessed on the second face 22.
  • the ribs 5 preferably protrude from the support 1 away from the first face 21 and can be extended along the support 1 in various patterns adapted to stiffen the support 1 and the blank 2, as shown in Figure 6 .
  • the ribs 5 can form a closed frame in relief along the peripheral region of the support 1 and/or can extend in a substantially longitudinal direction along a large part of the support 1 and/or be extended diagonally and/or radially in limited sectors of the support 1, for example along a perimetric band thereof.
  • the ribs 5 can be rectilinear and/or curved and/or undulated.
  • the ribs can be optionally provided with a sawtooth profile 51 and at least partly concentrated in a central region of the support 1 so as to provide a friction surface for the food product 62 that is released on the support 1 being packaged.
  • the blank 2 when the support 1 is peeled as shown in Figure 5 , the blank 2 remains substantially rigid, without bending, and further facilitates the full separation of the film 3 in a single move, optionally further facilitated by the presence of the separation layer 23 on the blank 2.
  • a package 6 for food products that contains the multilayer support 1, such as a skin pack it is possible to prevent or in any case reduce the possibility that the support 1 might warp due to the tension applied by the covering film 61, which is fixed hermetically on a perimetric band of the support 1, in a per se known manner, in order to retain in the package 6 the food product 62 (which can be, for example, meat or fish).
  • the manufacture of the package 6 occurs in a per se known manner, but is characterized by the particular support 1 that is used.
  • This support 1 is manufactured beforehand by perforating or scoring the first face 21 of at least one blank made of cardboard or card 2 in order to obtain the weakened line 4, so that said perforation or incision is obtained along a direction that goes from the first face 21 toward the opposite face 22 of the blank 2, i.e., by moving the perforation or scoring tool against the first face 21 toward the second face 22 and leaving a continuous incision 40 on the first face 21 which, in portions, exits onto the second face 22.
  • the weakened line 4 is preferably obtained with a single operation for die-cutting the blank 2 for example by means of a toothed die-cutter 49, which is longer than the length of the weakened line 4 to be obtained, so that the edge 13 of the blank 2 is affected by through cuts 41a-41b and not by residual bridges 42 made of paper material.
  • the die-cutter 49 is provided with recesses 49a along the cutting edge which, despite allowing complete and continuous incision of the first face 21, generate a half-cut only in the discrete regions that produce said bridges 42, while the remaining regions 41, including the regions 41a-41b of the edge 13 of the blank 2, are affected by a complete cut.
  • This perforation or incision step can be preceded optionally by a step of application of the separation layer 23 on the first face 21.
  • the first face 21 is then coated, preferably fully, with the peelable film 3, for example by lamination, so that the weakened line 4 is covered like a bridge by said film 3, which consequently joins the closed area 11 to the remaining portion 12 of the blank 2.
  • the manufacture of the supports 1 can start from a sheet of cardboard or card that has a surface extension that is substantially equal to or greater than that of a plurality of blanks 2, said sheet being perforated or scored on multiple areas in order to obtain various weakened lines 4 which are identical and its first face, on the side of which said perforation or incision has been provided, is coated completely by a peelable film. Said sheet thus perforated/scored and coated is then embossed or creased in order to obtain the ribs 5 and finally die-cut in order to obtain a plurality of supports 1.
  • the support 1 can then be used for the manufacture of a package 6, such as a skin pack, for example by resting thereon, and in particular on the face of the support 1 where the film 3 is located, one or more food products 62 (for example hamburgers, as in Figure 12 ) and by covering the face of the support 1 and the food product 62 with the covering film 61, for example by adhesive bonding or heat-sealing along a perimetric band of the support 1.
  • Said covering film 61 made of plastic material, can also be a barrier film which is adapted for food contact and can be fixed to the support 1 in vacuum and/or in a conditioned environment.
  • the invention achieves the intended aim and objects, providing a support that is particularly suitable to come into contact with food products in the corresponding packages and can be peeled without leaving residues of paper material on the peelable film at the weakened line.
  • the invention also allows to avoid or in any case reduce significantly the risk of breakage of the peelable film due to deformations of the support 1, said deformations being prevented also when the package that uses the support is still to be opened.
  • the materials used may be any according to the requirements and the state of the art.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)

Claims (12)

  1. Support multicouche (1), en particulier pour des produits alimentaires, comportant un support vierge (2) en carton ou en papier-carton qui est revêtu, sur une première face (21), d'un film pelable (3) en matière plastique, ladite première face (21) comportant une ligne affaiblie (4) qui est recouverte dudit film pelable (3) et est adaptée pour former sur ledit support vierge(2) une zone fermée (11) qui est délimitée par au moins un bord (13) dudit support vierge (2) et par ladite ligne affaiblie (4), de sorte que ladite zone fermée (11) peut par conséquent être enlevée par déchirure du reste dudit support vierge (2) en association avec le film pelable (3), ladite ligne affaiblie (4) étant obtenue par perforation ou incision effectuée en partant de ladite première face (21) vers la face opposée (22) du support vierge (2), caractérisé en ce que ladite ligne affaiblie (4) est formée par une incision continue (40) qui passe à travers jusqu'à la seconde face (22) uniquement sur des parties traversantes discrètes (41), au moins une (41a, 41b) desdites portions traversantes discrètes (41) coupant ledit au moins un bord (13) du support vierge(2).
  2. Support selon la revendication 1, caractérisé en ce que ledit support (1) comporte des nervures en relief (5) adaptées pour renforcer ledit support (1).
  3. Support selon la revendication précédente, dans lesdites nervures (5) sont des zones gaufrées et/ou plissées.
  4. Support selon une ou plusieurs des revendications précédentes, dans lequel ledit support vierge (2) comporte, sur ladite première face (21), une couche de séparation (23) qui est intercalée entre ledit support vierge (2) et ledit film pelable (3) et est adaptée pour faciliter le retrait complet dudit film pelable (3) lorsque ladite zone (11) est déchirée à partir du support vierge (2), en entraînant le film pelable (3) avec elle.
  5. Support selon une ou plusieurs des revendications précédentes, dans lequel ledit support vierge (2) est une feuille en papier-carton ou en carton qui est sensiblement plane.
  6. Support selon une ou plusieurs des revendications précédentes, dans lequel ladite ligne affaiblie a une allure ondulée le long du support vierge (2).
  7. Emballage pour produits alimentaires, caractérisé en ce qu'il comporte le support (1) selon une ou plusieurs des revendications précédentes et un film de recouvrement (61) qui est fixé sur ledit support (1) de sorte que le produit alimentaire (62) est intercalé entre ledit film de recouvrement (61) et ledit film pelable (3).
  8. Procédé pour fabriquer un support multicouche (1) en particulier pour des produits alimentaires, caractérisé en ce qu'il comporte les étapes consistant à :
    - effectuer une incision ou une perforation d'un support vierge en papier-carton ou en carton (2) à partir d'une première face (21) vers une seconde face (22) dudit support vierge (2) afin d'obtenir une ligne affaiblie (4), ladite ligne affaiblie étant formée par une incision continue (40) qui passe à travers jusqu'à la seconde face (22) uniquement sur des parties traversantes discrètes (41), au moins une (41a, 41b) desdites parties traversantes discrètes (41) coupant ledit au moins un bord (13) du support vierge (2),
    - revêtir ladite première face (21) d'un film pelable (3) en matière plastique afin d'obtenir ledit support multicouche (1), ladite ligne affaiblie (4) étant recouverte dudit film pelable (3) et étant adaptée pour former sur ledit support une zone fermée (11) qui est délimitée par ledit au moins un bord (13) du support vierge (2) et par ladite ligne affaiblie (4), de sorte que ladite zone fermée (11) peut être enlevée par déchirure du reste du support vierge (2) en association avec le film pelable (3).
  9. Procédé selon la revendication 8, caractérisé en ce qu'il comporte en outre, après l'étape de revêtement, une étape consistant à imprimer des nervures en relief (5) au moins sur ledit support vierge (2), qui sont adaptées pour renforcer ledit support vierge (2) et/ou ledit support (1).
  10. Procédé selon la revendication 9, dans lequel ladite étape d'impression consiste en une étape de gaufrage ou en une étape de plissage.
  11. Procédé selon la revendication 9 ou 10, dans lequel ladite étape d'impression comporte une étape consistant à intercaler ledit support multicouche (1) entre une plaque d'impression et une plaque en opposition, et une étape d'approche mutuelle de ladite plaque d'impression et de ladite plaque en opposition afin d'imprimer en relief lesdites nervures (5) sur ledit support vierge (2) ou sur ledit support (1), respectivement.
  12. Procédé pour fabriquer des emballages de produits alimentaires, caractérisé en ce qu'il comporte les étapes consistant à :
    - fournir le support selon une ou plusieurs des revendications 1 à 6,
    - intercaler au moins un produit alimentaire (62) entre ledit support (1) et un film de recouvrement (61),
    - fixer ledit film de recouvrement (61) audit support (1).
EP18705943.1A 2017-02-24 2018-02-23 Support multicouche, en particulier destiné à des produits alimentaires Active EP3585706B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000020976A IT201700020976A1 (it) 2017-02-24 2017-02-24 Supporto multistrato particolarmente per prodotti alimentari.
PCT/EP2018/054511 WO2018154052A1 (fr) 2017-02-24 2018-02-23 Support multicouche, en particulier destiné à des produits alimentaires

Publications (2)

Publication Number Publication Date
EP3585706A1 EP3585706A1 (fr) 2020-01-01
EP3585706B1 true EP3585706B1 (fr) 2021-01-13

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ID=59521227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18705943.1A Active EP3585706B1 (fr) 2017-02-24 2018-02-23 Support multicouche, en particulier destiné à des produits alimentaires

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Country Link
EP (1) EP3585706B1 (fr)
IT (1) IT201700020976A1 (fr)
WO (1) WO2018154052A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018103398U1 (de) * 2018-01-23 2018-06-22 Van Genechten Packaging N.V. Verpackung
IT202100006827A1 (it) * 2021-03-22 2022-09-22 Leaderpack S R L Materiale multistrato e metodo per la sua produzione

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2094508A5 (fr) * 1970-06-23 1972-02-04 Boisvieux Pierre
FR2976923A1 (fr) * 2011-06-23 2012-12-28 Marie Claude Dropsy Element de fond bi-matieres pour un emballage etanche

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3154215A (en) * 1960-08-25 1964-10-27 H S Crocker Co Inc Denestable stack of frozen food containers
US3619215A (en) * 1968-11-12 1971-11-09 Mayer & Co Inc O Heat-and-serve packages for prefried bacon and the like
NZ597817A (en) * 2009-07-29 2013-08-30 Cryovac Inc Easy-to-open package

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2094508A5 (fr) * 1970-06-23 1972-02-04 Boisvieux Pierre
FR2976923A1 (fr) * 2011-06-23 2012-12-28 Marie Claude Dropsy Element de fond bi-matieres pour un emballage etanche

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WO2018154052A1 (fr) 2018-08-30
IT201700020976A1 (it) 2018-08-24
EP3585706A1 (fr) 2020-01-01

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