EP0577634B1 - Packaging container and a method for the production of the same - Google Patents

Packaging container and a method for the production of the same Download PDF

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Publication number
EP0577634B1
EP0577634B1 EP92906469A EP92906469A EP0577634B1 EP 0577634 B1 EP0577634 B1 EP 0577634B1 EP 92906469 A EP92906469 A EP 92906469A EP 92906469 A EP92906469 A EP 92906469A EP 0577634 B1 EP0577634 B1 EP 0577634B1
Authority
EP
European Patent Office
Prior art keywords
packaging container
outer part
wartlike
inner part
skulls
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.)
Expired - Lifetime
Application number
EP92906469A
Other languages
German (de)
French (fr)
Other versions
EP0577634A1 (en
Inventor
Yngve Holmberg
Christoffer Glowacki
Karl Nideborn
Henrik Bjerkelund
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.)
Akerlund and Rausing AB
Original Assignee
Akerlund and Rausing AB
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 Akerlund and Rausing AB filed Critical Akerlund and Rausing AB
Publication of EP0577634A1 publication Critical patent/EP0577634A1/en
Application granted granted Critical
Publication of EP0577634B1 publication Critical patent/EP0577634B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/34—Coverings or external coatings
    • B65D25/36—Coverings or external coatings formed by applying sheet material

Definitions

  • the present invention relates to a packaging container and a method for the production of the same as defined in the introductory portion of the independent claims.
  • the packaging container according to the invention is particularly suitable for storing food and it is of such a type that advantageously can be put directly on a breakfast-table or the like.
  • Packaging containers for food such as butter and the like and which can be placed on a table ready laid are known earlier and they are shaped differently. They all have a cover by which they can be closed.
  • a common feature with packaging containers of said kind is that they are all made of more than one material. They consist of a stiffer outer material which can be pasteboard, paper, thick plastics or the like and an inner somewhat thinner but air and water impermeable material for example a suitable type of a plastic foil. These materials which separately contribute to the good function of the packaging container are joined to each other in different ways. The most common way is however that they are welded to each other either at the edges or over the whole surface or they can be joined by gluing or the like. The packaging container will therethrough get an even appearance and its function will be troublefree.
  • a container of the type defined in the preamble of claim 1 is known from SE-B-350 943, which discloses a container which has an inner and outer tray.
  • the outer tray is made of cardboard and is raised from a blank whereupon the overlapping end flaps are stuck together using adhesive.
  • the inner is thermoformed into the outer tray and at the corner regions protrusions of the inner tray through the outer tray occur, by means of holes suitably provided in the outer. A vertical separation of the tray elements is thus made more difficult.
  • the container thus formed can be complemented by the addition of glue between the inner and outer trays to exclude the possibility of accidental separation.
  • the layers are kept together substantially by means of mechanical attachment with each other and can be separated without using a tool.
  • the mechanical attachment comprises wartlike protrusions in one of the parts which are pressed into holes in the second part. These protrusions suitably extend out through the holes in the other part and form skulls on the outer side thereof.
  • the mechanical attachment also comprises overhangs at the upper part of the inner part forming a groove in which the upper part of the outer part fits. Both these measures can be combined.
  • the overhang with a groove is arranged at each corner of the packaging container if it has four corners and that the wartlike protrusions are arranged in one or more horizontal rows.
  • the outer part of the packaging container according to the invention can suitably comprise two or more overlapping materials which are kept together substantially by means of the wartlike protrusions and grooves.
  • the invention also comprises a method for the production of a packaging container according to the above, which is characterized by the features of the independent method claim.
  • the inner part can suitably be shaped over the edge of the outer part.
  • the inner part can first be preformed and thereafter joined with the outer part through snapping.
  • Fig. 1 shows a packaging container for food having an outer part 1 and an inner part 2.
  • the outer part 1 consists in the present embodiment of paste board which has been punched out and folded in a mould. In this paste board blank holes 3 have been punched out.
  • the inner part 2 one has instead arranged wartlike protrusions 4 which fit in the holes 3 and which are arranged directly opposite these and finally have been pressed into the holes 3.
  • the holes 3 and the protrusions 4 are suitably arranged in horizontal rows. On the figure one row is shown, but even a plurality of such rows can be arranged.
  • an overhang 5 has been arranged in the inner part of the plastic box. In these overhangs grooves have been made in which the outer part fits. This is further described in connection with Fig. 3.
  • Fig. 2 which is a section along the line A-A in Fig. 1 shows the inner part 2 of the packaging container and the outer part 1.
  • wartlike protrusions 4 are made in the inner part 2 which have been pressed into the holes 3 in the outer stiffer part. In this way the inner part is locked with the outer part so that no movement upwardly or downwardly can occur of one or the other part in relation to the other one.
  • the protrusions 4 according to the figure have been made somewhat deeper than the holes so that they protrude outside the outer surface of the outer wall 1 and form skulls outside the surface. The bottom of the protrusions can however be flush with the outer wall of the outer part 1.
  • Fig. 3 which is a section along the line B-B in Fig. 1 shows that the inner part 2 has been made with an overhang which forms a groove 7 in the inner part 2. In this groove 7 the outer part 1 fits.
  • This overhang 6 is close to the upper part of the inner part 2 and one has therefore made a recess in the outer part 1 so that it shall fit in the groove 7.
  • the outer part has been made in two materials of the same kind which overlap each other. They are kept together by the wartlike protrusions 4 with or without skulls and the grooves 7 in the inner part.
  • the holes 3 can be equal or the inner one can be made somewhat larger than the outer one.
  • the packaging container according to the present invention can be manufactured by first punching out a carton blank which shall be the outer part 1 of the packaging container and place this in a mould. In the mould one can thereafter by means of known techniques apply a plastic foil which will be the inner part 2 and either press this or suck it in by means of vacuum forming, thermoforming, pressure forming or extrusion.
  • Another way of producing the packaging container according to the invention is that one first makes the inner part 2 and then snaps this on the folded outer part 1.
  • the invention is not limited to the embodiment shown and it can be modified in different ways within the scope of the claims.
  • the materials in the packaging container accordingly do not have to be different, but they can be made of the same material which one nevertheless may wish to separate after use.
  • One of the materials may for example be provided with printing colours and should therefore not be mixed with the other.

Abstract

The present invention relates to a packaging container consisting of two or more layers such as plastics or carton or only plastics. The packaging container is characterized in that the different layers are kept together substantially only through mechanical attachment to each other. The attachment includes that wartlike protrusions (4) have been made in the inner part (2) which cooperate with holes (3) in the outer part (1) and that overhangs (5) which form grooves (7) have been made in the inner part in which the outer part (1) fits.

Description

    Technical field:
  • The present invention relates to a packaging container and a method for the production of the same as defined in the introductory portion of the independent claims. The packaging container according to the invention is particularly suitable for storing food and it is of such a type that advantageously can be put directly on a breakfast-table or the like.
    • Prior art:
  • Packaging containers for food such as butter and the like and which can be placed on a table ready laid are known earlier and they are shaped differently. They all have a cover by which they can be closed. A common feature with packaging containers of said kind is that they are all made of more than one material. They consist of a stiffer outer material which can be pasteboard, paper, thick plastics or the like and an inner somewhat thinner but air and water impermeable material for example a suitable type of a plastic foil. These materials which separately contribute to the good function of the packaging container are joined to each other in different ways. The most common way is however that they are welded to each other either at the edges or over the whole surface or they can be joined by gluing or the like. The packaging container will therethrough get an even appearance and its function will be troublefree.
  • A container of the type defined in the preamble of claim 1 is known from SE-B-350 943, which discloses a container which has an inner and outer tray. The outer tray is made of cardboard and is raised from a blank whereupon the overlapping end flaps are stuck together using adhesive. The inner is thermoformed into the outer tray and at the corner regions protrusions of the inner tray through the outer tray occur, by means of holes suitably provided in the outer. A vertical separation of the tray elements is thus made more difficult. The container thus formed can be complemented by the addition of glue between the inner and outer trays to exclude the possibility of accidental separation.
    • Technical problem:
  • One problem with the above mentioned packaging containers which has grown continuously stronger during recent years is that they consist of two or more materials. This is not a problem per se of the packaging container itself, but it provides a great hindrance when the packaging container has been used and one intends to recover materials from which it has been made. Due to the good joint between the different materials it is very difficult to separate these materials in a simple way. This is however necessary if the materials shall be recovered. One cannot melt plastics together with cellulosic fibres and recover either plastics or the cellulosic fibres in the paper material and these parts or different kinds of plastic materials have to be separated before recovering using known techniques can be started.
  • Whilst the aforementioned SE-B-350 943 goes some way to solving this problem, flexing of the container may initiate the separation of the layers of the container unless an adhesive is used. However, the use of adhesive between the layers affects the recycling characteristics of the container.
    • The invention:
  • To make recovering of different materials possible which are part of the packaging containers, one has according to the invention solved the problem with the above said articles and brought about a packaging container consisting of layers of two or more like or different materials such as plastics and cardboard and which is characterized by the features of claim 1. Thus, the layers are kept together substantially by means of mechanical attachment with each other and can be separated without using a tool.
  • Preferred features are defined in the dependent claims.
  • The mechanical attachment comprises wartlike protrusions in one of the parts which are pressed into holes in the second part. These protrusions suitably extend out through the holes in the other part and form skulls on the outer side thereof.
  • It is further preferable that the mechanical attachment also comprises overhangs at the upper part of the inner part forming a groove in which the upper part of the outer part fits. Both these measures can be combined.
  • It is advantageous that the overhang with a groove is arranged at each corner of the packaging container if it has four corners and that the wartlike protrusions are arranged in one or more horizontal rows.
  • The outer part of the packaging container according to the invention can suitably comprise two or more overlapping materials which are kept together substantially by means of the wartlike protrusions and grooves.
  • The invention also comprises a method for the production of a packaging container according to the above, which is characterized by the features of the independent method claim.
  • The inner part can suitably be shaped over the edge of the outer part.
  • According to a modification of the method the inner part can first be preformed and thereafter joined with the outer part through snapping.
    • Detailed description of the invention:
  • The invention will in the following be described more in detail with connection to the drawings where
    • Fig. 1
    shows a perspective view of a packaging container according to the invention,
    Fig. 2
    shows a section according to the line A-A in Fig. 1, per se not being an embodiment of the invention,
    Fig. 3
    shows a section according to the line B-B in Fig. 1, and
    Fig. 4
    shows a section through the wall in the packaging container according to an embodiment of the invention.
  • Fig. 1 shows a packaging container for food having an outer part 1 and an inner part 2. The outer part 1 consists in the present embodiment of paste board which has been punched out and folded in a mould. In this paste board blank holes 3 have been punched out. In the inner part 2 one has instead arranged wartlike protrusions 4 which fit in the holes 3 and which are arranged directly opposite these and finally have been pressed into the holes 3. The holes 3 and the protrusions 4 are suitably arranged in horizontal rows. On the figure one row is shown, but even a plurality of such rows can be arranged.
  • At the four corners of the packaging container an overhang 5 has been arranged in the inner part of the plastic box. In these overhangs grooves have been made in which the outer part fits. This is further described in connection with Fig. 3.
  • Fig. 2 which is a section along the line A-A in Fig. 1 shows the inner part 2 of the packaging container and the outer part 1. As appears from the figure wartlike protrusions 4 are made in the inner part 2 which have been pressed into the holes 3 in the outer stiffer part. In this way the inner part is locked with the outer part so that no movement upwardly or downwardly can occur of one or the other part in relation to the other one. The protrusions 4 according to the figure have been made somewhat deeper than the holes so that they protrude outside the outer surface of the outer wall 1 and form skulls outside the surface. The bottom of the protrusions can however be flush with the outer wall of the outer part 1.
  • Fig. 3 which is a section along the line B-B in Fig. 1 shows that the inner part 2 has been made with an overhang which forms a groove 7 in the inner part 2. In this groove 7 the outer part 1 fits. This overhang 6 is close to the upper part of the inner part 2 and one has therefore made a recess in the outer part 1 so that it shall fit in the groove 7.
  • In the embodiment of the invention according to Fig. 4 the outer part has been made in two materials of the same kind which overlap each other. They are kept together by the wartlike protrusions 4 with or without skulls and the grooves 7 in the inner part. The holes 3 can be equal or the inner one can be made somewhat larger than the outer one.
  • By locking the inner part 2 mechanically to the outer part 1 by means of the protrusions 4 and the overhang 6 with grooves 7 one has obtained a very stable arrangement, but which nevertheless is easy to separate. When the packaging container has been emptied one can easily separate the two parts without using any tool and put them into different compartments when sorting out. Herethrough one gains of course great environmental advantages as the two parts in their entirety can be recovered by known methods.
  • If one so wishes one may strengthen the attachment by means of a suitable adhesive at some place, but one has then to observe that the adhesive completely at the separation will remain on only one of the parts where it can not cause any pollution.
  • The packaging container according to the present invention can be manufactured by first punching out a carton blank which shall be the outer part 1 of the packaging container and place this in a mould. In the mould one can thereafter by means of known techniques apply a plastic foil which will be the inner part 2 and either press this or suck it in by means of vacuum forming, thermoforming, pressure forming or extrusion.
  • Another way of producing the packaging container according to the invention is that one first makes the inner part 2 and then snaps this on the folded outer part 1.
  • The invention is not limited to the embodiment shown and it can be modified in different ways within the scope of the claims. The materials in the packaging container accordingly do not have to be different, but they can be made of the same material which one nevertheless may wish to separate after use. One of the materials may for example be provided with printing colours and should therefore not be mixed with the other.

Claims (8)

  1. Packaging container consisting of two or more layers such as plastics/plastics or plastics/carton, whereby the different layers are kept together substantially through mechanical attachment to each other by wartlike protrusions (4) in the inner part (2) which extend out through holes (3) in the outer part (1), characterized in that said wartlike projections form skulls on the outer side of this part (1), said skulls overlapping the outer side of said outer part (1).
  2. Packaging container according to claim 1, characterized in that the mechanical attachment further comprises an overhang (5) at the upper part of the inner part (2) forming a groove (7) in which the upper part of the outer part (1) fits.
  3. Packaging container according to claim 2, characterized in that the overhang (5) with grooves (7) is arranged at each corner.
  4. Packaging container according to any of the claims 1-3, characterized in that the wartlike protrusions (4) are arranged in one or more horizontal rows.
  5. Packaging container according to any of the claims 1-4, characterized in that the outer part (1) forms overlapping connections of at least two overlapping layers which are mainly kept together by means of the wartlike protrusions (4) and the grooves (7).
  6. Method for the production of a packaging container according to any of the claims 1-5, characterized in that the outer part (1) for example in the shape of a punched carton blank is placed in a mould whereupon the inner part (2) for example in the shape of a plastics blank is applied through vacuum forming, thermoforming, pressure forming or extrusion in such a way that wartlike projections in the inner part (2) extend out through holes (3) in the outer part (1), thus forming skulls on the outer side of said outer part (1), said skulls overlapping the outer side of said outer part (1).
  7. Method according to claim 6, characterized in that the inner part (2) is formed over the edge of the outer part (1).
  8. Modification of the method according to claim 6, characterized in that the inner part (2) is initially preshaped and thereafter joined to the outer part (1) by snapping in such a way, that said skulls overlap the outer side of said outer part (1).
EP92906469A 1991-03-26 1992-03-16 Packaging container and a method for the production of the same Expired - Lifetime EP0577634B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9100905 1991-03-26
SE9100905A SE9100905L (en) 1991-03-26 1991-03-26 PACKAGING BOX AND PROCEDURES FOR PREPARING A SUGAR
PCT/SE1992/000155 WO1992017375A1 (en) 1991-03-26 1992-03-16 Packaging container and a method for the production of the same

Publications (2)

Publication Number Publication Date
EP0577634A1 EP0577634A1 (en) 1994-01-12
EP0577634B1 true EP0577634B1 (en) 1994-11-02

Family

ID=20382283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92906469A Expired - Lifetime EP0577634B1 (en) 1991-03-26 1992-03-16 Packaging container and a method for the production of the same

Country Status (10)

Country Link
EP (1) EP0577634B1 (en)
AT (1) ATE113543T1 (en)
AU (1) AU1366592A (en)
DE (1) DE69200625T2 (en)
DK (1) DK0577634T3 (en)
ES (1) ES2066606T3 (en)
FI (1) FI934181A0 (en)
NO (1) NO933424L (en)
SE (1) SE9100905L (en)
WO (1) WO1992017375A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024062137A1 (en) * 2022-09-23 2024-03-28 Berry Superfos Randers A/S Improvements in or relating to packaging

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685115A5 (en) * 1992-05-18 1995-03-31 Sandherr Packungen Ag Packaging container.
US5709308A (en) * 1995-06-06 1998-01-20 Gics & Vermee, L.P. Food product container including a tray and a jacket and an associated food product package
WO1997007034A1 (en) * 1995-08-16 1997-02-27 Werner Heinz Wilke Packaging container and process for producing it
FR2826938B1 (en) * 2001-07-04 2004-01-16 Marie Claude Dropsy SEALABLE RECYCLABLE CONTAINER
FR2975083B1 (en) * 2011-05-12 2014-08-22 Cgl Pack Service REINFORCED TRAINER WITH LOW ENVIRONMENTAL IMPACT
DE102020102544A1 (en) * 2020-02-02 2021-08-05 Van Genechten Packaging N.V. Tray or cup-shaped packaging container
FR3111874B1 (en) * 2020-06-30 2023-01-13 Groupe Guillin Sa Plastic packaging with a cardboard frame or other bio-sourced material without gluing.
GB2602124B (en) * 2020-12-18 2023-09-27 Reed Thermoformed Packaging Ltd A thermoformed container with paperboard outer
EP4169846A1 (en) * 2021-10-20 2023-04-26 PACCOR Packaging GmbH Container suitable for holding portioned food and method for assembly of such a container and method for disassembly of such a container

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE313274B (en) * 1968-10-03 1969-08-04 Akerlund & Rausing Ab
SE350943B (en) * 1971-09-14 1972-11-13 Esseltepack Ab

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024062137A1 (en) * 2022-09-23 2024-03-28 Berry Superfos Randers A/S Improvements in or relating to packaging

Also Published As

Publication number Publication date
EP0577634A1 (en) 1994-01-12
DK0577634T3 (en) 1995-04-24
SE9100905D0 (en) 1991-03-26
WO1992017375A1 (en) 1992-10-15
SE9100905L (en) 1992-09-27
ATE113543T1 (en) 1994-11-15
DE69200625T2 (en) 1995-03-23
NO933424L (en) 1993-11-16
DE69200625D1 (en) 1994-12-08
AU1366592A (en) 1992-11-02
NO933424D0 (en) 1993-09-24
FI934181A (en) 1993-09-24
FI934181A0 (en) 1993-09-24
ES2066606T3 (en) 1995-03-01

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