EP3914530B1 - Steife verpackung und verfahren zur herstellung dieser verpackung - Google Patents

Steife verpackung und verfahren zur herstellung dieser verpackung Download PDF

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Publication number
EP3914530B1
EP3914530B1 EP20705425.5A EP20705425A EP3914530B1 EP 3914530 B1 EP3914530 B1 EP 3914530B1 EP 20705425 A EP20705425 A EP 20705425A EP 3914530 B1 EP3914530 B1 EP 3914530B1
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EP
European Patent Office
Prior art keywords
packaging
layer
skeleton
sheet
cardboard
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Application number
EP20705425.5A
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English (en)
French (fr)
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EP3914530A1 (de
Inventor
Julien Hebert
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Hebert P
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Hebert P
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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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3865—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers
    • B65D81/3874—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers formed of different materials, e.g. laminated or foam filling between walls
    • 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
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • B65D2565/385—Details of packaging materials of special type or form especially suited for or with means facilitating recycling

Definitions

  • the invention relates to a rigid packaging as well as a method of manufacturing this packaging.
  • Rigid packaging refers to all packaging that is not flexible, such as bags or films. In other words, a package is considered rigid if it does not collapse under the effect of its own weight. It therefore has a three-dimensional shape which is retained during conventional operations of storage, filling and distribution of a product contained in this packaging.
  • CA2445553A1 From the state of the art is known to CA2445553A1 And EP2803598 .
  • the document CA2445553A1 describes a package, according to the preamble of claim 1, comprising a skeleton and a sheet of thermoplastic material.
  • the invention aims to provide such packaging. It therefore relates to a rigid packaging according to claim 1.
  • the invention also relates to a process for manufacturing this packaging.
  • FIG. 1 represents a rigid packaging 2 defining a hollow volume 4 intended to receive a product.
  • the product packaged inside packaging 2 is here a food product.
  • the food product can be liquid, pasty or solid.
  • the food product can be a dairy product such as fresh cream.
  • the product Food can also be ice cream, candies, vegetables or any other food product that needs to be dispensed in a package.
  • the volume 4 is a solid of revolution having as its axis of revolution a vertical axis 6.
  • the horizontal is identified by directions X and Y of an orthogonal reference X,Y,Z.
  • the Z direction is parallel to the vertical direction. Terms such as “up”, “down”, “upper”, “lower” and the like are defined relative to this Z direction.
  • the hollow volume 4 extends between a lower horizontal plane P inf and an upper horizontal plane P sup .
  • the hollow volume 4 is tapered.
  • the volume 4 is typically greater than 50 cm 3 or 100 cm 3 or 500 cm 3 and, generally, less than 1 m 3 or 0.5 m 3 .
  • Packaging 2 is a rigid packaging. To this end, the packaging 2 has sufficient horizontal rigidity and vertical rigidity.
  • “Horizontal stiffness” means the resistance of the packaging to a compressive force along a horizontal direction, i.e. a force whose direction belongs to a plane parallel to the X and Y directions.
  • vertical rigidity is meant the resistance of the packaging 2 to a vertical compression force, that is to say to a force whose direction is parallel to the direction Z.
  • the width, length and height of packaging 2 are equal, respectively, to the width, length and height of the smallest volume parallelepiped which entirely contains packaging 2.
  • the maximum depression in the bearing direction is less than 1 cm or 5 mm.
  • the packaging 2 comprises a bottom wall 14 and a side wall 16 as well as an upper rim 18.
  • the wall 14 is a disc centered on the axis 6 and of radius R 14 .
  • the radius R 14 is typically greater than 2 cm or 4 cm. Generally, the radius R 14 is less than 50 cm or 25 cm.
  • the bottom wall 14 extends here mainly in the plane P inf .
  • the side wall 16 is a truncated cone which extends, while widening, from the periphery of the wall 14 to the rim 18.
  • the rim 18 extends mainly in the plane P sup .
  • the flange 18 surrounds a circular opening 20 through which the food product can be introduced and then removed from the packaging 2.
  • the flange 18 and the opening 20 are circular and centered on the axis 6.
  • the rim 18 is arranged to receive a cap and/or a cover making it possible to completely close the opening 20.
  • it is arranged to receive a cap 22, for example, heat-sealed on the rim 18.
  • Heat-welded means the fact that the weld which mechanically connects two thermoplastic elements together, without any degree of freedom, is obtained by heating these two elements until the melting temperature of these thermoplastic elements is exceeded so that the thermoplastic materials of these elements interpenetrate. By cooling, a rigid weld is thus obtained between these two elements. This welding is carried out without adding any external material such as an adhesive. With this definition, two thermoplastic elements welded using a process known as “ultrasonic welding” are considered to be heat welded. Indeed, ultrasonic welding heats thermoplastic elements beyond their melting temperature.
  • the flange 18 and the lid 22 are made of thermoplastic material capable of being heat-sealed together.
  • the flange 18 has a horizontal annular face 24 facing upwards on which the periphery of the lid 22 is welded.
  • the strength of the weld between the cover 22 and the rim 18 is adjusted so that this cover 22 can be torn off manually by a user of the packaging 2 when it is opened.
  • the flange 18 is here a solid of revolution generated by the rotation, over 360° and around the axis 6, of a vertical section 26.
  • the vertical section 26 is shaped to confer sufficient horizontal rigidity on this flange 18.
  • the vertical section 26 has, in places, in a horizontal direction, a thickness greater than 0.5 mm or 1 mm.
  • the section 26 is also shaped so that a lid can also fit on the rim 18.
  • the section 26 comprises for this purpose a projection 28 towards the outside of the packaging 2 on which a lid can come s interlock by elastic mechanical deformation.
  • the packaging 2 For the packaging 2 to be both rigid and light, it comprises a skeleton 30 made of thermoplastic material and a sheet 32 heat-sealed onto this skeleton 30. It is the skeleton 30 which determines the shape of the packaging 2 and which ensures most of the horizontal rigidity of this packaging.
  • the sheet 32 provides, in this embodiment, most of the vertical rigidity of the packaging 2, which makes it possible to reduce the quantity of thermoplastic material used to produce the skeleton 30.
  • the bottom 40 is also formed by strands to produce a mesh which forms the framework of the lower wall 14.
  • the bottom 40 comprises a strand 44 which defines the edge between the walls 14 and 16.
  • this strand 44 is circular and centered on the axis 6.
  • the strand 44 has the shape of an angle iron, one of the wings of which extends vertically and the other of the wings extends horizontally in the direction of axis 6.
  • the bottom 40 also comprises one or more other horizontal strands 46 which delimit several meshes in the bottom 40.
  • these strands are straight strands.
  • these strands 46 extend from a portion of the strand 44 to a portion facing the strand 44 by intersecting the axis 6. To simplify the figure 1 , a single strand 46 has been shown.
  • the strands 42 define the shape of the side wall 16. These strands 42 form a mesh which extends from the strand 44 to the rim 18. For example, these strands 42 are straight strands. Here, these strands 42 each extend in a respective vertical plane from a portion of the strand 44 to a corresponding portion of the flange 18. To simplify the figure 1 , only one of these strands 42 has been shown.
  • the skeleton 30 is made from a single block of thermoplastic material which can be injection molded.
  • the skeleton 30 is made of polypropylene.
  • the sheet 32 is heat-sealed on each strand and on the lower part of the flange 18 so as to completely close all the meshes which delimit the walls 14 and 16 of the packaging 2.
  • the sheet 32 is a light and flexible sheet.
  • the sheet 32 is also designed to limit the environmental impact of the packaging 2 as much as possible.
  • the sheet 32 is essentially made from an aggregate of paper fibre. By “essentially realized”, it is meant here that the mass of the paper fiber aggregate is greater than 50% of the total mass of the sheet 32.
  • the inner layer 50 is capable of being heat-sealed onto the skeleton 30.
  • the inner layer 50 is made of thermoplastic material.
  • this inner layer insulates the cardboard layer 54 from moisture.
  • the inner layer 50 is also made of a material compatible with this application.
  • the inner layer 50 is made of the same thermoplastic material as that used to make the skeleton 30.
  • the inner layer is therefore made of polypropylene.
  • the thickness of the inner layer 50 is chosen to be as small as possible while remaining capable of fulfilling its various functions. Typically, its thickness is less than 200 ⁇ m or 100 ⁇ m or 50 ⁇ m. Generally, its thickness is greater than 20 ⁇ m.
  • thermoplastic material of the skeleton 30 has fused with the inner layer 50 so that the inner layer 50 no longer forms a single block of material with the skeleton 30.
  • the cardboard layer 54 is composed solely of the paper fiber aggregate.
  • the mass of the layer 54 represents more than 50% and, preferably, more than 60% or more than 70% of the mass of the sheet 32.
  • this cardboard layer 54 which provides the vertical rigidity of the packaging 2.
  • its thickness is generally greater, most often two or three times greater, than the thickness of the other layers of the sheet 32.
  • the thickness of the cardboard layer 54 is greater than 100 ⁇ m or 200 ⁇ m. Its weight per unit area is conventionally between 50 g/m 2 and 400 g/m 2 and advantageously between 100 g/m 2 and 300 g/m 2 .
  • the cardboard layer 54 is thick enough for its mass to represent more than 50% of the total mass of the packaging 2 without the lid 22 and without the lid.
  • the cardboard layer 54 is recyclable like paper or cardboard.
  • the face of the layer 54 in contact with the layer 56 is generally printed before being associated with the layer 56. This printing makes it possible to indicate various information on the product contained in the packaging 2 such as, for example, the name of the product, producer brand, etc.
  • the outer layer 56 is made of a transparent material so that the printed face of the layer 54 is visible from the outside by a user. Additionally, the outer layer 56 insulates the cardboard layer 54 from external moisture. Typically, the layer 56 is a varnish or a transparent film deposited on the printed side of the layer 54. Here this varnish or this transparent film is made of a plastic material.
  • the thickness of the outer layer 56 is also chosen as small as possible to fulfill its functions. Generally, its thickness is less than 50 ⁇ m or 30 ⁇ m or 20 ⁇ m. Its thickness is also usually greater than 5 ⁇ m.
  • the binding layer 52 makes it possible to manually detach the cardboard layer 54 from the inner layer 50 by peeling. More precisely, thanks to the layer 52, the adhesion energy of the cardboard layer 54 on the internal layer 50 is lower, and preferably two or three times lower, than the adhesion energy of the internal layer 50 on the skeleton 30.
  • adhesion energy is meant the energy necessary to achieve the separation of these layers.
  • the adhesion energy is also referred to by the English term “cleavage energy”.
  • the bonding layer 52 is made in such a way that the adhesion energy of this layer 52 on the internal layer 50 is higher and, preferably two or three times higher, than the adhesion energy of the layer 52 on the cardboard layer 54.
  • the cardboard layer 54 when the cardboard layer 54 is pulled, it separates from the inner layer 50 at the interface between the bonding layer 52 and the inner layer 50.
  • the inner layer 50 remains fixed and attached to the skeleton 30.
  • the skeleton 30 and the inner layer 50 then form an object entirely made of plastic material that is easy to sort and recycle.
  • a complex 60 is also obtained, consisting of the bonding layer 52, the cardboard layer 54 and the outer layer 56.
  • the proportion, by mass, of the paper fiber aggregate in this complex 60 is very high. larger than in the case of sheet 32, which simplifies its sorting and recycling.
  • the packaging 2 can have shapes other than an essentially frustoconical shape like the one previously described.
  • the package 2 can also have the shape of any polyhedron.
  • strands of the skeleton extend along each of the edges of this polyhedron.
  • the polyhedron can be a parallelepiped.
  • the faces of the polyhedron are each a polygon such as for example a rectangle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)

Claims (10)

  1. Steife Verpackung, umfassend:
    - ein Skelett (30) aus thermoplastischem Material, wobei dieses Skelett umfasst:
    • einen Rand (18), der eine Öffnung (20) umgibt, über die ein Produkt aus der Verpackung entnommen werden kann,
    • einen Boden (40),
    • Streben (42), die mechanisch mit dem Boden und dem Rand verbunden sind und die Maschen eines Gitters bilden, das das Gerüst einer Seitenwand (16) der Verpackung definiert, wobei sich diese Seitenwand von dem Boden aus bis zu dem Rand erstreckt und, in Kombination mit dem Boden, einen Hohlraum von mindestens 50 cm3 definiert, der in der Lage ist, das Produkt aufzunehmen,
    - eine Folie (32), die an das Skelett thermogeschweißt ist und die Maschen, die die Seitenwand definieren, verschließt,
    dadurch gekennzeichnet, dass:
    - diese Folie in der Reihenfolge umfasst:
    • eine innere Lage (50) aus thermoplastischem Material, die an die Streben des Skeletts thermogeschweißt ist,
    • eine kartonierte Lage (54) aus Papierfaseraggregat, wobei die Masse dieser kartonierten Lage mehr als 50 % der Gesamtmasse der Folie ausmacht,
    - die Adhäsionsenergie der kartonierten Lage (54) an der inneren Lage (50) geringer ist als die Adhäsionsenergie der inneren Lage (50) an den Streben (42) des Skeletts und
    - die thermogeschweißte Folie einen Greiffortsatz (62) für die Hand eines Menschen umfasst, wobei dieser Fortsatz einstückig mit der kartonierten Lage ist und durch manuelles Ziehen an diesem Fortsatz das manuelle Abziehen der kartonierten Lage ermöglicht, um sie mechanisch von der inneren Lage zu lösen.
  2. Verpackung nach Anspruch 1, wobei:
    - das Skelett auch Streben (44, 46) umfasst, die Maschen eines Gitters bilden, das den Boden der Verpackung definiert, und
    - die thermogeschweißte Folie auch die Maschen verschließt, die den Boden der Verpackung definieren.
  3. Verpackung nach einem der vorhergehenden Ansprüche, wobei das Skelett (30) und die innere Lage (50) aus demselben thermoplastischen Material ausgeführt sind.
  4. Verpackung nach einem der vorhergehenden Ansprüche, wobei die thermogeschweißte Folie eine Verbindungslage (52) umfasst, die zwischen der inneren Lage und der kartonierten Lage eingelegt ist, wobei diese Verbindungslage geeignet ist, die kartonierte Lage an der inneren Lage mit einer Adhäsionsenergie zu fixieren, die geringer als die Adhäsionsenergie der inneren Lage an den Streben des Skeletts ist.
  5. Verpackung nach Anspruch 4, bei der die Verbindungslage so angeordnet ist, dass die Kraft, die in eine Richtung senkrecht zur Fläche der Folie (32) auf den Fortsatz (62) auszuüben ist, um die kartonierte Lage abzuziehen, zwischen 0,5 N und 5 N beträgt.
  6. Verpackung nach einem der vorhergehenden Ansprüche, bei der der Fortsatz (62) eine Lasche ist, die ohne irgendeinen Freiheitsgrad an der kartonierten Lage fixiert ist.
  7. Verpackung nach einem der vorhergehenden Ansprüche, wobei die Verpackung einen Deckel (22) umfasst, der so an den Rand (18) thermogeschweißt ist, dass er die Öffnung vollständig verschließt, und/oder einen Deckel, der so auf den Rand gesteckt ist, dass er diese Öffnung vollständig verschließt.
  8. Verpackung nach einem der vorhergehenden Ansprüche, wobei die Masse der kartonierten Lage (54) mehr als 50 % der Gesamtmasse der Verpackung beträgt.
  9. Verpackung nach einem der vorhergehenden Ansprüche, wobei die Folie (32), auf der Seite der kartonierten Lage (54), die zur inneren Lage (50) entgegengesetzt ist, eine äußere Lage (56) umfasst, die geeignet ist, die kartonierte Lage (54) vor äußerer Feuchtigkeit zu schützen.
  10. Verfahren zur Herstellung einer Verpackung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass dieses Verfahren umfasst:
    - das Platzieren (74) der Folie in einer weiblichen Schale eines Formwerkzeugs,
    - das Positionieren (76) einer männlichen Schale innerhalb der weiblichen Schale, wobei diese männliche Schale daraufhin direkt an der Folie anliegt, wobei die weiblichen und männlichen Schalen somit durch Formschluss einen Formhohlraum des Skeletts bilden, wobei dieser Formhohlraum an den Stellen direkt in Kontakt mit der Folie ist, an denen die Folie an das Skelett geschweißt werden soll,
    - das Einspritzen (78) des thermoplastischen Materials in den Formhohlraum, wobei dieses Einspritzen somit gleichzeitig zur Bildung des Skeletts und zum Schweißen der Folie an die Streben des Skeletts führt, um die Verpackung zu erhalten, und
    - das Entnehmen (80) der erhaltenen Verpackung aus dem Formwerkzeug.
EP20705425.5A 2019-01-22 2020-01-17 Steife verpackung und verfahren zur herstellung dieser verpackung Active EP3914530B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1900518A FR3091856B1 (fr) 2019-01-22 2019-01-22 Emballage rigide et procédé de fabrication de cet emballage
PCT/FR2020/050067 WO2020152411A1 (fr) 2019-01-22 2020-01-17 Emballage rigide et procédé de fabrication de cet emballage

Publications (2)

Publication Number Publication Date
EP3914530A1 EP3914530A1 (de) 2021-12-01
EP3914530B1 true EP3914530B1 (de) 2023-06-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20705425.5A Active EP3914530B1 (de) 2019-01-22 2020-01-17 Steife verpackung und verfahren zur herstellung dieser verpackung

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EP (1) EP3914530B1 (de)
FR (1) FR3091856B1 (de)
WO (1) WO2020152411A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022128475B3 (de) * 2022-10-27 2024-04-11 Johann A. Löning Wiederverwendbarer Behälter insbesondere für Lebensmittel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2445553A1 (en) * 2003-10-17 2004-03-10 Stackteck Systems Limited Semi-molded thin wall container configuration and method
US20060011634A1 (en) * 2004-07-13 2006-01-19 Daiwa Gravure Co., Ltd. Cup shaped container
GB2510643A (en) * 2013-02-12 2014-08-13 Intercontinental Great Brands Llc Container
US8701914B1 (en) * 2013-02-15 2014-04-22 Ronald Mark Buck Two-part recyclable cup
ES2618890T3 (es) * 2013-05-13 2017-06-22 Bestwin Resources Limited Estructuras de copa compuestas

Also Published As

Publication number Publication date
FR3091856A1 (fr) 2020-07-24
EP3914530A1 (de) 2021-12-01
WO2020152411A1 (fr) 2020-07-30
FR3091856B1 (fr) 2020-12-25

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