EP1277662B1 - Méthode de production d'un emballage scellé pour aliments fluides et emballage ainsi formé - Google Patents

Méthode de production d'un emballage scellé pour aliments fluides et emballage ainsi formé Download PDF

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Publication number
EP1277662B1
EP1277662B1 EP01116561A EP01116561A EP1277662B1 EP 1277662 B1 EP1277662 B1 EP 1277662B1 EP 01116561 A EP01116561 A EP 01116561A EP 01116561 A EP01116561 A EP 01116561A EP 1277662 B1 EP1277662 B1 EP 1277662B1
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EP
European Patent Office
Prior art keywords
layer
package
removable portion
cap
removable
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
EP01116561A
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German (de)
English (en)
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EP1277662A1 (fr
EP1277662B2 (fr
Inventor
Jan-Erik Nilsson
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.)
Tetra Laval Holdings and Finance SA
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Tetra Laval Holdings and Finance SA
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Priority to EP01116561A priority Critical patent/EP1277662B2/fr
Priority to ES01116561T priority patent/ES2240283T5/es
Priority to AT01116561T priority patent/ATE295307T1/de
Priority to DE60110778T priority patent/DE60110778T3/de
Priority to PT01116561T priority patent/PT1277662E/pt
Application filed by Tetra Laval Holdings and Finance SA filed Critical Tetra Laval Holdings and Finance SA
Publication of EP1277662A1 publication Critical patent/EP1277662A1/fr
Publication of EP1277662B1 publication Critical patent/EP1277662B1/fr
Publication of EP1277662B2 publication Critical patent/EP1277662B2/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
    • 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
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/746—Spouts formed separately from the container
    • B65D5/747—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
    • B65D5/749—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall a major part of the container wall or membrane being removed from the container after the opening
    • 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
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/70—Break-in flaps, or members adapted to be torn-off, to provide pouring openings
    • B65D5/708—Separate tearable flexible elements covering a discharge opening of a container, e.g. adhesive tape

Definitions

  • the present invention relates to a method of producing a sealed package of a pourable food product, and to the package so formed.
  • pourable food products such as fruit juice, UHT (ultra-high-temperature processed) milk, wine, tomato sauce, etc.
  • UHT ultra-high-temperature processed milk
  • wine tomato sauce
  • etc. are sold in packages made of sterilized packaging material.
  • a typical example of such a package is the parallelepiped-shaped package for liquid or pourable food products known as Tetra Brik Aseptic (registered trademark), which is formed by folding and sealing laminated strip packaging material.
  • the packaging material has a multilayer structure comprising a base layer which imparts stiffness and strength and which may composed of a layer of fibrous material, e.g. paper, or a material such as mineral-filled polypropylene.
  • the base layer is covered on both sides with layers of thermoplastic material, e.g.
  • the packaging material also comprises a layer of oxygen-barrier material defined, for example, by an aluminium film, which is superimposed on a layer of thermoplastic material and is in turn covered with another layer of thermoplastic material eventually defining the inner face of the package contacting the food product.
  • such packages are made on fully automatic packaging machines, on which a continuous tube is formed from the web-fed packaging material; the web of packaging material is sterilized on the packaging machine itself, e.g. by applying a chemical sterilizing agent, such as a hydrogen peroxide solution, which, after sterilization, is removed, e.g. vaporized by heating, from the surfaces of the packaging material; and the web of packaging material so sterilized is maintained in a closed sterile environment, and is folded and sealed longitudinally to form a vertical tube.
  • a chemical sterilizing agent such as a hydrogen peroxide solution
  • the tube is filled with the sterilized or sterile-processed food product, and is sealed and cut at equally spaced cross sections to form pillow packs, which are then folded mechanically to form the finished, e.g. substantially parallelepiped-shaped, packages.
  • the packaging material may be cut into blanks, which are formed into packages on forming spindles, and the resulting packages are filled with the food product and sealed.
  • a package is the so-called "gable-top" package commonly known by the trade name Tetra Rex (registered trademark).
  • Packages of the above type are normally provided with closable opening devices to permit consumption of and safeguard the food product from contact with external agents.
  • opening devices comprise a frame defining an opening and fitted about a pierceable or removable portion of the top wall of the package; and a cap hinged or screwed to the frame and which can be removed to open the package.
  • Other, e.g. slidable, opening devices are also known to be used.
  • the removable portion of the package may be defined, for example, by a so-called "prelaminated” hole, i.e. a hole formed in the base layer of the packaging material before the base layer is joined to the thermoplastic layers and to the barrier layer, which closes the hole to ensure hermetic, aseptic sealing, while at the same time being easily pierced.
  • prelaminated hole i.e. a hole formed in the base layer of the packaging material before the base layer is joined to the thermoplastic layers and to the barrier layer, which closes the hole to ensure hermetic, aseptic sealing, while at the same time being easily pierced.
  • the opening device cap is preferably heat sealed directly to the thermoplastic material covering the hole in the layer of the packaging material, so that, when removing the cap from the frame, the removable portion remains attached to the cap and is detached from the rest of the top wall of the package.
  • the user simply acts on the cap to detach the cap from the frame and remove the removable portion in one single operation.
  • thermoplastic material has a tendency to tear and fray when removing the cap from the frame, thus resulting in a ragged opening and irregular outflow of the food product, due to the frayed plastic of the removable portion projecting through the exposed hole in the packaging material when the cap is detached from the frame.
  • WO 98 14317A discloses a method of producing a sealed package of a pourable food product, as defined in the preamble of claim 1.
  • the present invention also relates to a sealed package of pourable food products, as claimed in claim 4.
  • Number 1 in Figure 1 indicates as a whole an aseptic sealed package for pourable food products, e.g. a parallelepiped-shaped package known as Tetra Brik Aseptic (registered trademark), which is produced from a web 2 of packaging material (shown only partly in Figure 4) as described in more detail previously, and is provided with a closable opening device 3 made of plastic material and applied to a top wall 4 of package 1.
  • Tetra Brik Aseptic registered trademark
  • the packaging material defining web 2 and package 1 has a multilayer structure, and comprises a base layer 5 of fibrous material, e.g. paper, or mineral-filled polypropylene, covered on the side defining the outer face of package 1 with a film 6 of thermoplastic material - in the example shown, polyethylene.
  • a layer 7 of oxygen-barrier material e.g. an aluminium film, which is covered on both sides with respective films 8 of thermoplastic material, e.g. polyethylene.
  • Opening device 3 is fitted to top wall 4 of package 1, at a removable, in this case circular, portion 10 of wall 4, i.e. a portion detachable from the rest of package 1 to pour out the food product.
  • opening device 3 comprises an externally threaded, annular frame 11 fixed to wall 4 of package 1 about removable portion 10 and defining a circular opening 12 through which to pour the food product; and a cap 13, which is formed separately from frame 11, is screwed to frame 11 in a closed position closing opening 12, and adheres, e.g. is heat sealed, directly to removable portion 10.
  • cap 13 is movable between said closed position and an open position detached from frame 11.
  • removable portion 10 remains attached to cap 13 and is detached from the rest of wall 4 of package 1.
  • frame 11 comprises an annular flange 20 heat sealed to wall 4 of package 1 and internally defining opening 12; and a cylindrical, externally threaded, annular portion 21 projecting from a lateral edge of opening 12.
  • Cap 13 comprises, integrally, a portion 22 closing opening 12; and a cylindrical, internally threaded, annular portion 23 projecting from a circular outer peripheral edge 24 of portion 22 and which screws onto annular portion 21 of frame 11.
  • Cap 13 also comprises, integrally, two radial tabs 25, each substantially in the form of a right-angle trapezium, and which project radially outwards from annular portion 23 and provide for screwing and unscrewing cap 13 easily on and off frame 11.
  • portion 22 is substantially defined by a truncated-cone cup-shaped body 26 increasing in section towards removable portion 10 of wall 4 and defining an inner cavity 27 open towards wall 4; and by a truncated-cone-shaped lateral wall 28 tapering oppositely with respect to cup-shaped body 26, extending from a bottom lateral edge of cup-shaped body 26, and defining peripheral edge 24 at the top.
  • annular portion 23 extends from peripheral edge 24, and is located radially outwards of and coaxial with lateral wall 28 so as to define, with lateral wall 28, a seat for receiving annular portion 21 of frame 11.
  • the connecting portion between lateral wall 28 and cup-shaped body 26 of portion 22 defines an annular anchoring section 31 projecting through opening 12 in the closed position of cap 13, and heat sealed directly to removable portion 10 of wall 4.
  • stiffening material layer 15 of removable portion 10 is interposed between barrier material layer 7 and anchoring section 31 of cap 13.
  • Number 10' in Figure 6 indicates as a whole an alternative removable portion for package 1 produced according to the present invention.
  • Removable portion 10' is similar to removable portion 10, and its component parts are indicated wherever possible using the same reference numbers as for the corresponding parts of removable portion 10.
  • Removable portion 10' is obtained by forming a hole 35 through layer 5 of web 2, laminating layer 5 with films 6, 8 of thermoplastic material and layer 7 of barrier material to cover hole 35, and then applying onto the portions of material covering hole 35 a portion 36 of stiffening material, preferably a disk of fibrous material covered outwards with thermoplastic material.
  • package 1 is opened using tabs 25 to rotate cap 13 with respect to frame 11. As it rotates, cap 13 retains, and so detaches from the rest of wall 4, removable portion 10, or likewise removable portion 10', of top wall 4 sealed to anchoring section 31.
  • removable portion 10, 10' is detached neatly from the rest of wall 4 of package 1 with very little residual plastic projecting through the hole formed in wall 4 by detaching removable portion 10, 10'.
  • stiffening removable portion 10, 10' with a layer of fibrous material (15, 36) provides, when opening package 1, for better cutting films 6, 8 of thermoplastic material and layer 7 of barrier material.
  • films 6, 8 of thermoplastic material are therefore stretched and frayed less when opening package 1, thus reducing the residual plastic projecting through the hole formed in wall 4 of package 1 by detaching removable portion 10, 10'.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)
  • Closures For Containers (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Jellies, Jams, And Syrups (AREA)

Claims (6)

  1. Méthode de production d'un emballage scellé (1) pour produits alimentaires fluides à partir d'un matériau d'emballage en feuille multicouche (2) comprenant une couche de base (5) et des couches de matière thermoplastique (6, 8) et de matière de barrière (7), la dite méthode comprenant les étapes de :
    formation, dans le dit matériau d'emballage en feuille multicouche (2), d'une partie détachable (10') comprenant au moins des couches de matière thermoplastique (6, 8) et de matière de barrière (7) ;
    application, autour de la dite partie détachable (10'), d'une embase (11) définissant un orifice de versage (12) ;
    montage, sur la dite embase (11), d'un bouchon amovible (13) fermant le dit orifice de versage (12) ; et
    application d'une couche de matière de raidissement (36) à la dite partie détachable (10') ;
    caractérisée en ce que le dit bouchon (13) est lié directement à la dite partie détachable (10') et en ce que la dite partie détachable (10') est obtenue par :
    création d'un trou (35) à travers la dite couche de base (5) ;
    contrecollage de la dite couche de base (5) avec les dites couches de matière thermoplastique (6, 8) et de matière de barrière (7) de façon à couvrir le dit trou (35) ; puis
    application de la dite couche de matière de raidissement (36) sur les parties de matière couvrant le trou (35).
  2. Méthode selon la revendication 1, caractérisée en ce que la dite couche de base (5) et la dite couche de matière de raidissement (36) comprennent une matière fibreuse.
  3. Méthode selon la revendication 1 ou 2, caractérisée en ce que la dite couche de matière de raidissement (36) est interposée entre la dite couche de matière de barrière (7) de la dite partie détachable (10') et le dit bouchon (13).
  4. Emballage scellé (1) pour produits alimentaires fluides, fabriqué en un matériau d'emballage en feuille multicouche (2) comprenant une couche de base (5) et des couches de matière thermoplastique (6, 8) et de matière de barrière (7) ; le dit emballage (1) comprenant :
    une partie détachable (10') incluant au moins les couches de matière thermoplastique (6, 8) et de matière de barrière (7) et une couche de matière de raidissement (36) ;
    une embase (11) appliquée autour de la dite partie détachable (10') et définissant un orifice de versage (12) ; et
    un bouchon amovible (13) monté sur la dite embase (11) pour fermer ledit orifice de versage (12) ;
    caractérisé en ce que le dit bouchon amovible (13) est fixé directement à la dite partie détachable (10'), en ce que la dite partie détachable (10') est définie par un trou traversant (35) formé à travers la dite couche de base (5) et couvert avec les dites couches de matière thermoplastique (6, 8) et de matière de barrière (7), et en ce que la dite couche de matière de raidissement (36) est appliquée sur les parties de matière couvrant le dit trou (35).
  5. Emballage selon la revendication 4, caractérisé en ce que la dite couche de base (5) et la dite couche de matière de raidissement (36) comprennent une matière fibreuse.
  6. Emballage selon la revendication 4 ou 5, caractérisé en ce que la dite couche de matière de raidissement (36) est interposée entre la dite couche de matière de barrière (7) de la dite partie détachable (10') et le dit bouchon (13).
EP01116561A 2001-07-09 2001-07-09 Méthode de production d'un emballage scellé pour aliments fluides et emballage ainsi formé Expired - Lifetime EP1277662B2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES01116561T ES2240283T5 (es) 2001-07-09 2001-07-09 Metodo para producir un envase sellado para un producto alimenticio vertible, y envase asi formado.
AT01116561T ATE295307T1 (de) 2001-07-09 2001-07-09 Herstellungsverfahren einer versiegelten verpackung für fliessfähige lebensmittel sowie somit hergestellte verpackung
DE60110778T DE60110778T3 (de) 2001-07-09 2001-07-09 Herstellungsverfahren einer versiegelten Verpackung für fliessfähige Lebensmittel sowie somit hergestellte Verpackung
PT01116561T PT1277662E (pt) 2001-07-09 2001-07-09 Metodo de producao de uma embalagem vedada de um produto alimentar que se pode vazar, e embalagem assim formada
EP01116561A EP1277662B2 (fr) 2001-07-09 2001-07-09 Méthode de production d'un emballage scellé pour aliments fluides et emballage ainsi formé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01116561A EP1277662B2 (fr) 2001-07-09 2001-07-09 Méthode de production d'un emballage scellé pour aliments fluides et emballage ainsi formé

Publications (3)

Publication Number Publication Date
EP1277662A1 EP1277662A1 (fr) 2003-01-22
EP1277662B1 true EP1277662B1 (fr) 2005-05-11
EP1277662B2 EP1277662B2 (fr) 2007-10-17

Family

ID=8177980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01116561A Expired - Lifetime EP1277662B2 (fr) 2001-07-09 2001-07-09 Méthode de production d'un emballage scellé pour aliments fluides et emballage ainsi formé

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Country Link
EP (1) EP1277662B2 (fr)
AT (1) ATE295307T1 (fr)
DE (1) DE60110778T3 (fr)
ES (1) ES2240283T5 (fr)
PT (1) PT1277662E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7878353B2 (en) 2004-08-20 2011-02-01 Tetra Laval Holdings & Finance Sa Opening device for a sealed package containing a pourable food product

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5653823B2 (ja) 2010-06-30 2015-01-14 富士フイルム株式会社 放射線検出素子、及び放射線画像撮影装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3808303A1 (de) * 1988-03-12 1989-09-21 Pkl Verpackungssysteme Gmbh Quaderfoermige flachgiebelpackung und verfahren zu deren herstellung
EP0331798B1 (fr) * 1988-03-11 1993-12-29 International Paper Company Goulotte auto-ouvrante et fermeture à vis
DE4409945A1 (de) * 1994-03-23 1995-09-28 Pkl Verpackungssysteme Gmbh Quaderförmige Flachgiebelverbundpackung und Verfahren zu ihrer Herstellung
EP0980330B1 (fr) * 1997-05-14 2004-03-17 Tetra Laval Holdings & Finance S.A. Dispositif de fermeture integre decoupe et procede de formage correspondant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9620412D0 (en) * 1996-09-01 1996-11-20 Elopak Systems A method of treating a laminate
JP2000053126A (ja) * 1998-08-05 2000-02-22 Nihon Tetra Pak Kk 包装容器
ATE376519T1 (de) * 1999-08-27 2007-11-15 Tetra Laval Holdings & Finance Verfahren zum anbringen einer abschliessbaren öffnung an einer packung für ausgiessbare nahrungsmittel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0331798B1 (fr) * 1988-03-11 1993-12-29 International Paper Company Goulotte auto-ouvrante et fermeture à vis
DE3808303A1 (de) * 1988-03-12 1989-09-21 Pkl Verpackungssysteme Gmbh Quaderfoermige flachgiebelpackung und verfahren zu deren herstellung
DE4409945A1 (de) * 1994-03-23 1995-09-28 Pkl Verpackungssysteme Gmbh Quaderförmige Flachgiebelverbundpackung und Verfahren zu ihrer Herstellung
EP0980330B1 (fr) * 1997-05-14 2004-03-17 Tetra Laval Holdings & Finance S.A. Dispositif de fermeture integre decoupe et procede de formage correspondant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7878353B2 (en) 2004-08-20 2011-02-01 Tetra Laval Holdings & Finance Sa Opening device for a sealed package containing a pourable food product

Also Published As

Publication number Publication date
EP1277662A1 (fr) 2003-01-22
ES2240283T5 (es) 2008-04-16
ES2240283T3 (es) 2005-10-16
DE60110778T3 (de) 2008-01-24
ATE295307T1 (de) 2005-05-15
DE60110778D1 (de) 2005-06-16
DE60110778T2 (de) 2006-02-23
PT1277662E (pt) 2005-09-30
EP1277662B2 (fr) 2007-10-17

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