EP4108585A1 - Einteilige verpackung mit siegelrand, die aus zwei nicht überlappenden zuschnitten hergestellt wird - Google Patents

Einteilige verpackung mit siegelrand, die aus zwei nicht überlappenden zuschnitten hergestellt wird Download PDF

Info

Publication number
EP4108585A1
EP4108585A1 EP22179469.6A EP22179469A EP4108585A1 EP 4108585 A1 EP4108585 A1 EP 4108585A1 EP 22179469 A EP22179469 A EP 22179469A EP 4108585 A1 EP4108585 A1 EP 4108585A1
Authority
EP
European Patent Office
Prior art keywords
packaging
peripheral wall
container
blank
food products
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.)
Pending
Application number
EP22179469.6A
Other languages
English (en)
French (fr)
Inventor
François Guillin
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.)
Groupe Guillin SA
Original Assignee
Groupe Guillin SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Groupe Guillin SA filed Critical Groupe Guillin SA
Publication of EP4108585A1 publication Critical patent/EP4108585A1/de
Pending legal-status Critical Current

Links

Images

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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/32—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper having bodies formed by folding and interconnecting two or more blanks each blank forming a body part, whereby each body part comprises at least one outside face of the box, carton or tray
    • B65D5/322—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper having bodies formed by folding and interconnecting two or more blanks each blank forming a body part, whereby each body part comprises at least one outside face of the box, carton or tray at least one container body part formed by folding a single blank to essentially U-shape with or without extensions which form openable lid elements

Definitions

  • the present invention relates to a new packaging for the packaging and conservation mainly of food products, and therefore comprises a container offering an interior space or volume delimited by a bottom and a peripheral wall, and which can, if necessary, be sealed by a film. plastic closure or other bio-sourced material sealed at the free edge of the peripheral wall and preserving the food contained in the packaging.
  • the packaging of the invention is mainly made of cardboard, therefore falling within the environmental logic recommended today, which tends to replace plastic containers with cardboard configurations. It is sealed by a film coating the inner faces of a cardboard tray forming the container of the receptacle. The sealing provided by the film makes it possible to use the packaging for a wide range of foodstuffs requiring storage protected from the ambient air, in particular if they are subsequently sealed.
  • Such cardboard packaging coated with an inner plastic film has been well known for a long time, such as for example those described in the patent FR 2 975 973 , which focuses in particular on another problem related to this packaging: when sealing the container with a plastic seal closing the container, ensuring a tight connection between the flat edges that such a method of closing requires and the seal .
  • Sealed packaging in fact requires first of all the existence of a peripheral rim extending the wall of the container outwards to allow and support sealing, a rim which must then be flat, failing which airtightness, when it is required , cannot be assured.
  • the cardboard blank used to shape the tray in volume comprises a pan forming the bottom and tabs extending on the different sides of the bottom, each being sized to form one side of the peripheral wall and one side of the rim.
  • the sealing can be carried out on a support (the complete peripheral edge) whose flatness is assumed to be continuous all around the circumference of the packaging, guaranteeing a good hermeticity to the container thus closed.
  • a support the complete peripheral edge
  • the initial flat cardboard blank benefits from very precise cutouts of the different tabs, in particular in their parts forming the different sides of the rim.
  • the flatness is no longer ensured and it becomes difficult to achieve a correct seal during sealing.
  • the initial cutting of the flat blank provides areas which, at the time of three-dimensional assembly, overlap.
  • the overlapping zones are also sometimes the subject of specific gluing with the aim of reinforcing the solidity of the tray before laying the film coating the inner faces of the peripheral wall and the upper faces of the rim.
  • the overlapping zones affect said peripheral rim, the latter has extra thicknesses often localized at the level of the corners of the package.
  • the lidding takes place on an edge which is not flat, but which on the contrary offers areas for sealing the lid distributed over two levels.
  • the pressure exerted at the time of sealing is therefore not uniform, it is obviously greater at the places where there are two thicknesses.
  • the resulting seal is potentially less effective, in terms of sealing, particularly at the level of the steps separating the zones with two superimposed thicknesses from those which have only one thickness.
  • the three-dimensional forming of the initially flat, pre-creased, pre-cut and folded blank, with a view to its volume deployment is complex and requires specific machines to insert in automated manufacturing lines for such packaging and product packaging, which slow down production rates.
  • the present invention overcomes these problems and limitations, by proposing an innovative solution which not only guarantees the uniformity of the thickness of the sealing surface of the lid over the entire peripheral rim of the packaging, but also its flatness and its perfect continuity all around.
  • the packaging for packaging food products of the invention conventionally comprising a cardboard container comprising a bottom, a peripheral wall and a rim device, one side of said container being coated with a plastic film or other bio-sourced material, is provided such that the cardboard container is made from two pre-scored and pre-cut flat blanks, a first blank comprising on the one hand the entire peripheral rim formed in one piece in the blank and on the other hand a first part of the peripheral wall and a second blank comprising the bottom and a second part of the peripheral wall, said first and second parts of the peripheral wall butting together without overlapping.
  • peripheral rim being in one piece, in other words made up of a single piece in the first blank, without division, it is therefore completely flat and has no relief, neither positive nor negative, which could weaken or interrupt the connection. sealing at the time of sealing.
  • This solution without folds or joints on the edge guarantees an airtight seal which results from a completely controlled flatness. The tightness thus ensured allows the use of these packagings including for packaging fresh and semi-fresh foods, which must be able to be kept for several days in a controlled atmosphere and which is not altered by gas exchanges with the outside. .
  • the configuration of the invention which provides that the portions of the container - and more particularly of the peripheral wall - emanating from each of the blanks do not overlap but butt together edge to edge, is furthermore advantageous in that the raw material - the cardboard - used for the constitution of the packaging is minimal.
  • Another preponderant advantage of the configuration of the invention resides in the possibility of simple and rapid implementation in an automated production line, each flat blank being easy to conform, a single mold being supplied horizontally from two feeders.
  • the two cardboard blanks are placed correctly in relation to the mold by a robot, then sucked into it.
  • the plastic film or other bio-sourced material for the interior coating is then applied to the blanks pressed against the walls of the mould, without recovery, before a phase of cutting said film outside the rim of the container formed.
  • the manufacture of packaging obeying the structure which is the subject of the invention is rapid, and makes it possible to confer on the automated lines an excellent yield.
  • the two blanks are preferably of constant and equal thickness.
  • this is not a necessary constraint, and nothing prevents that, for the purposes of increasing the mechanical strength, for example, certain parts are thicker than others, and that the distribution of the parts of The distinct thickness covers in practice the division into two blanks, which can then each be provided with a uniform thickness, but different from that of the other.
  • the container of the invention is provided polyhedral, the first blank therefore comprising a polygonal strip provided to form the rim and at least one side of the peripheral wall.
  • the container has flat sides separated by edges at places where the edges of said sides meet.
  • the abutment zones relate only to the peripheral wall of the container itself, and do not have an extension in the rim, which is in one piece and continuous according to the essential characteristic of the invention.
  • the respective configurations of the cardboard blanks may be such that the first blank may include the peripheral rim of the container and half of the flats of the peripheral wall of said container.
  • the sections of the first blank can consist of one out of two sections of the peripheral wall of the container.
  • the choice of the number and the position of the sides supported by one or the other of the blanks can also result from constraints linked to the volume that one wants to give to the container, always with the concern of optimizing the use of blank material.
  • the depth of the resulting container is necessarily limited, since the maximum depth will be equal to half the distance separating the opposite edges of the container.
  • the second blank can then present on the one hand a polygonal face forming the bottom of the container, homothetic to the layout of the polygon made up of the edge and/or the edges connecting the edge and the peripheral wall, and secondly at least one of the sections of said peripheral wall, depending on the number of sections attached to the first blank.
  • the two remaining sides of the peripheral wall not attached to the first blank are provided in the second blank.
  • the second blank has in this case on the one hand a polygonal section forming the bottom of the container, and on the other hand one out of two sections of the peripheral wall not attached to the first blank.
  • the outer corners of the rim are preferably provided rounded for both practical and aesthetic reasons.
  • the blanks can be provided in flat cardboard or micro-fluted cardboard, recyclable materials and therefore particularly sought after in current packaging.
  • the peripheral wall of the container made up of sections for a polyhedral container, can be perforated so that the packaged product is visible through the film. Furthermore, this peripheral wall may include at least one printable surface. Thus, the blanks can for example be printed to personalize the packaging.
  • the cardboard container of the invention is produced by means of two flat cardboard blanks 1, 2 pre-cut and pre-scored in order to constitute a single volume container as shown in picture 3 .
  • the blank 1 incorporates the flange 10, drawn in one piece and, in the configuration shown, two side panels 11, 12 of trapezoidal shape.
  • the blank 2 comprises the bottom 20 and the two other sides side 21, 22 also provided trapezoidal so that the assembly, the volume of the container is a polyhedron of the truncated pyramid type with four sides.
  • the blank 1 has symmetry with respect to a longitudinal central axis of the pre-cut shape appearing in figure 1 , in which the sections 11, 12 provided in the blank 1 meet along this central axis, halfway between two opposite sides of the rim 10. They meet in practice at the level of the abutting contact of their free edges 15, 16, the line of contact being obtained by a simple cut in the blank 1, and they therefore have the same width between the folding edges 13, 14, connecting them to the rim 10 and the said free edges 15, 16.
  • the sides 21 and 22 falling from the blank 2 have, in the configuration shown, also an equal dimension between their free edges 23, 24 and the folding grooves 25, 26 connecting them to the bottom 20, dimension which is however not necessarily equal. to the width of the sides 11, 12.
  • the width of the sides 11, 12, of the blank 1 and of the sides 21, 22 of the blank 2 contributes in practice to the establishment of the depth of the latter when the volume assembly is carried out. If the volume of the container were prismatic, this "width" would correspond to the depth of the container.
  • the width of the sides 11, 12 when they are butted as on the figure 1 is moreover in reality the upper limit value of the depth of the packaging, which can therefore only be reached when the volume of the container is a prism with a rectangular base, which is not the case here.
  • the two blanks 1, 2 have, in the configuration shown, a double symmetry with respect to two central axes respectively longitudinal and transverse, that is to say a symmetry with respect to a central point, which can be seen as a very special case of geometry which can obviously include many non-symmetrical variants.
  • the depth of the container is less than that which a straight prismatic configuration would have, and the difference in the widths of the sides 11, 12 of the blank 1 and those of the sides 21, 22 of the blank 2 depends in practice on the dimensions and the position of the bottom 20, and consequently on the angles of inclination of the sections forming the sides 11, 12, 21 and 22. that is to say the inclinations on the one hand of the sides 11, 12 and on the other hand the sections 21, 22 are identical in the configuration shown, but this is again only a special case: it could be envisaged that the bottom 20 is offset towards one or the other on the side of the rim 10 to which these sections belong, which would then have neither the same inclination nor the same “width”.
  • the free edges 23, 24 of the sides 21, 22 have, still in this particular configuration shown, a length which corresponds to the length of the inner edges 17, 18 placed in correspondence on the rim 10.
  • the folding edges 13, 14 separating in the blank 1 the rim 10 of the sides 11, 12 run over the entire length of the corresponding side of said rim 10.
  • the free edges 15, 16 of the sides 11, 12 also have the same length as the edges 27, 28 of the bottom 20, the entire internal volume of the packaging is enclosed in the side walls during the final assembly in three dimensions, as it appears in picture 3 , when the free edges of the two blanks 1, 2 are butted.
  • filming is therefore carried out when all the sections 20, 11, 12, 21, 22 delimiting the interior volume of the container and the rim 10 are correctly positioned in a mould.
  • This filming has the effect of coating the inner face of the container with a plastic layer of another bio-sourced material which allows it to retain the three-dimensional conformation that the mold has given it, and also gives it a waterproof character.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
EP22179469.6A 2021-06-22 2022-06-16 Einteilige verpackung mit siegelrand, die aus zwei nicht überlappenden zuschnitten hergestellt wird Pending EP4108585A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2106622A FR3124171B1 (fr) 2021-06-22 2021-06-22 Emballage à rebord de scellage d’un seul tenant réalisé à partir de deux flans sans chevauchement.

Publications (1)

Publication Number Publication Date
EP4108585A1 true EP4108585A1 (de) 2022-12-28

Family

ID=76921002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22179469.6A Pending EP4108585A1 (de) 2021-06-22 2022-06-16 Einteilige verpackung mit siegelrand, die aus zwei nicht überlappenden zuschnitten hergestellt wird

Country Status (2)

Country Link
EP (1) EP4108585A1 (de)
FR (1) FR3124171B1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB243475A (en) * 1924-09-16 1925-12-03 Albert Roslington Buckton Improvements in, or relating to, folding cardboard-boxes
FR2975973A1 (fr) 2011-05-30 2012-12-07 Formkraft Procede de fabrication d'une barquette etanche en carton pour la realisation d'un emballage permettant le conditionnement de produits
US20200047975A1 (en) 2018-08-07 2020-02-13 Graphic Packaging International, Llc Container With Liner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB243475A (en) * 1924-09-16 1925-12-03 Albert Roslington Buckton Improvements in, or relating to, folding cardboard-boxes
FR2975973A1 (fr) 2011-05-30 2012-12-07 Formkraft Procede de fabrication d'une barquette etanche en carton pour la realisation d'un emballage permettant le conditionnement de produits
US20200047975A1 (en) 2018-08-07 2020-02-13 Graphic Packaging International, Llc Container With Liner

Also Published As

Publication number Publication date
FR3124171A1 (fr) 2022-12-23
FR3124171B1 (fr) 2023-10-06

Similar Documents

Publication Publication Date Title
EP2872409B1 (de) Kastenförmige verpackung aus zwei materialien zum verpacken eines produktes, und herstellungsverfahren
EP0052021B1 (de) Kartonbehälter mit Kunststoffauskleidung und mit einem einstückigen Umfangsrahmen und Verfahren zu seiner Herstellung
FR2754518A1 (fr) Emballage, procede et dispositif de conditionnement d'un article ou d'un lot d'articles de volume indetermine
EP0010088B1 (de) Kartonbehälter mit Kunststoffilmkaschierung bestehend aus mindestens zwei Abteilen
EP4108585A1 (de) Einteilige verpackung mit siegelrand, die aus zwei nicht überlappenden zuschnitten hergestellt wird
EP0007944B1 (de) Verfahren zur herstellung einer, mit einem undurchlässigen blatt bezogenen, verpackung und zuschnitt zur durchführung dieses verfahrens
EP4108584A1 (de) Verpackung mit einteiligem siegelrand, die aus zwei sich überlappenden zuschnitten hergestellt wird
EP0262047A1 (de) Luftdichter Behälter insbesondere für Nahrungsmittel und Verfahren zu seiner Herstellung
EP0109890A1 (de) Isolierende Verpackung
FR2535691A1 (fr) Boite isolante
FR2861370A1 (fr) Boite d'emballage pliante, renforcee
FR3114301A3 (fr) Récipient pour produits alimentaires
FR3132084A1 (fr) Emballage à rebord de scellage d’un seul tenant réalisé à partir d’un flan en carton
EP3144236B1 (de) Flachvorläufer für eine verpackung, entsprechendes verfahren und entsprechende verpackung
FR3132699A3 (fr) Emballage à rebord de scellage d’un seul tenant réalisé à partir d’un flan en carton
FR2780703A1 (fr) Contenant en un materiau semi-rigide pour le conditionnement d'objets divers et flan pour sa realisation
FR3083781A1 (fr) Boite de transport
EP4238879A1 (de) Verpackung mit entstapelungsreliefs und herstellungsverfahren
EP3301040B1 (de) Wärmedämmungsvorrichtung
WO2011110776A1 (fr) Barquette constituee d'une enveloppe carton externe et d'un film plastique interne
EP4043356A1 (de) Doppelmaterial-verpackung aus kunststoff und karton oder einem anderen biobasierten material mit deckel
FR3014853A1 (fr) Flan et etui hermetique et refermable pour le conditionnement de denrees alimentaires
FR3112530A1 (fr) Barquette destinée à contenir une denrée alimentaire de type hamburger
WO2023148163A1 (fr) Flan pour l'emballage d'une portion alimentaire et procédé d'emballage d'une portion alimentaire
EP2662298B1 (de) Zwischenvorrichtung für Verpackung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230529

P02 Opt-out of the competence of the unified patent court (upc) corrected

Effective date: 20230530

17P Request for examination filed

Effective date: 20230626

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR