EP1160172B1 - Dispositif d'ouverture pour un emballage d'aliments pouvant s'écouler et emballage comportant ledit dispositif - Google Patents

Dispositif d'ouverture pour un emballage d'aliments pouvant s'écouler et emballage comportant ledit dispositif Download PDF

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Publication number
EP1160172B1
EP1160172B1 EP00111550A EP00111550A EP1160172B1 EP 1160172 B1 EP1160172 B1 EP 1160172B1 EP 00111550 A EP00111550 A EP 00111550A EP 00111550 A EP00111550 A EP 00111550A EP 1160172 B1 EP1160172 B1 EP 1160172B1
Authority
EP
European Patent Office
Prior art keywords
lid
edge
projection
frame portion
hinge axis
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
EP00111550A
Other languages
German (de)
English (en)
Other versions
EP1160172A1 (fr
Inventor
Göran Ek
André Erlandsson
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
Original Assignee
Tetra Laval Holdings and Finance 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 Tetra Laval Holdings and Finance SA filed Critical Tetra Laval Holdings and Finance SA
Priority to EP00111550A priority Critical patent/EP1160172B1/fr
Priority to AT00111550T priority patent/ATE277823T1/de
Priority to DE60014332T priority patent/DE60014332T2/de
Priority to ES00111550T priority patent/ES2226653T3/es
Publication of EP1160172A1 publication Critical patent/EP1160172A1/fr
Application granted granted Critical
Publication of EP1160172B1 publication Critical patent/EP1160172B1/fr
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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
    • B65D47/0804—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage

Definitions

  • the present invention relates to an opening device for a package for pourable food products, as well as to a food product package including such an opening device.
  • a typical example of such a package is the parallelepipedal package for liquid or pourable food products known as Tetra Brik Aseptic (registered trademark), which is formed by folding and sealing laminated web packaging material.
  • the laminated packaging material comprises a layer of fibrous material, e.g. paper, covered on both sides with thermoplastic material, e.g. polyethylene.
  • the packaging material also includes a layer of barrier material, such as an aluminium foil, which in turn is covered with a layer of thermoplastic material defining the inner surface of the package actually contacting the food product.
  • such packages are produced on fully automatic packaging machines, in which a continuous tube is formed from the web packaging material.
  • the web of packaging material is sterilized, and then fed to a forming unit where it is longitudinally folded and sealed to form a tube.
  • the tube is then filled with the food product, and is sealed by pairs of jaws and then cut at equally spaced transverse bands to form pillow packets, which are subsequently folded mechanically to form the finished, e.g. parallelepipedal, packages.
  • the packaging material may be cut into blanks, which are formed on forming mandrels to make the packages. Such packages are then filled with the food product and sealed.
  • gable-top package known as Tetra Rex (registered trademark).
  • Reclosable opening devices for packages of the above types which include a frame portion defining a pouring opening and adapted to be fitted to a hole or a punch-through or pull-off portion in a wall of the package, and a lid hinged to the frame portion.
  • the lid is moulded integrally with the frame portion, and is originally sealed to the same along a peripheral edge extending around the opening, by a thin, breakable annular connecting portion. Once unsealed, the lid is movable between a closed position in which it cooperates in a fluidtight manner with the frame portion, and an open position.
  • Opening devices are known in which the lid is provided with means for keeping the same open at a given minimum angle with respect to the frame, so that the lid does not interfere with the food product as this is poured through the pouring aperture.
  • said means for keeping the lid open are defined by a couple of lateral projections of the lid, which extend from the lid towards the inside of the package and are inclined outwards, so as to rest against a peripheral edge of the pouring aperture.
  • the inclined projections are critical to manufacture because either highly complex and costly moulding tools are used, or the projections are elastically deformed during extraction from the mould, which may cause the projection (34) to stick to the mould walls.
  • edge of the pouring aperture is more rigid than the projections, so that the latter are highly deformed during closure of the lid in order to bend inwards to overcome the edge and flip back beyond the edge at the inside.
  • the projection are subjected to repeated flexure and constitute a weak part which may break, be permanently deformed or not work properly.
  • a reclosable opening device for a pourable food product package made from a sheet packaging material, and comprising a frame portion designed to be fitted to said packaging material at a hole or removable portion thereof and defining a pouring opening surrounded by an edge of said frame portion, and a lid hinged to said frame portion for rotation about a hinge axis, said lid including at least one projection extending from a side thereof facing said opening, said projection contacting a first portion of said edge of said frame portion to keep said lid open, characterised in that said projection of said lid extends from said lid perpendicularly and includes a first portion designed to be located between said first portion of said edge and said hinge axis in a closed position of said lid and interfering with and resting on said first portion of said edge in an open position of said lid, whereas no interference between said first portion of said projection and said first portion of said edge exists in the closed position of sais lid.
  • the present invention also relates to a package for pourable food products made from sheet packaging material and comprising a reclosable opening device as above defined.
  • Numeral 1 in Figure 1 indicates a package for pourable food products, of which a top wall 2 only is shown.
  • Package 1 is made from a packaging material 3 having a multilayer structure (not shown), and comprises a layer of fibrous material, normally paper, covered on both sides with respective layers of thermoplastic material, e.g. polyethylene.
  • the side of the packaging material eventually contacting the food product in package 1 may also have a layer of barrier material, e.g. aluminium, in turn covered with one or more layers of thermoplastic material.
  • Opening device 4 comprises a frame portion 5 defining a pouring opening 6 by which to pour out the food product contained in package 1, and fitted to wall 2 at a hole 7 thereof (figure 2) ; and a lid 8 connected to frame portion 5 by a hinge 9 defining a hinge axis A.
  • Lid 8 is moulded integrally with frame portion 5.
  • Opening device 4 is preferably formed by injecting plastic material through hole 7 and between two mould elements (not shown) cooperating with each other on opposite sides of packaging material 3, so that frame portion 5 embeds an edge 16 of hole 7 and forms an annular, internal flange 17 and an annular, external flange 18 which rest on respective faces of wall 2 thereby preventing opening device 4 to be removed from hole 7.
  • Frame portion further includes a raised, annular neck 19 extending from external flange 18 and delimiting pouring opening 6.
  • Lid 8 comprises a flat, substantially oval main portion 24, which is connected to frame portion 5 by hinge 9; and a raised, substantially U shaped sealing lip 25 extending from the ends of hinge 9 and projecting from main portion 24 for engagement with neck 19.
  • Lid 8 is originally sealed to an internal edge 26 of neck 19 of frame portion 5 surrounding opening 6 by a thin breakable rib 11 ( Figures 1 and 2) extending along a peripheral line around lip 25, and which is broken when the lid is unsealed.
  • Neck 19 of frame portion 5 and lip 25 of lid 8 are conveniently so shaped as to define a V shaped pouring beak 21.
  • lid 8 is movable between an open position ( Figures 1 and 2) and a closed position (fig 3), in which lip 25 of lid 8 is retained in fluid-tight manner inside neck 19 of frame portion 5 by rib 11 snapping beyond edge 26.
  • Frame portion 5 includes a pair of symmetrical internal protrusions 28 extending from edge 26 towards a median plane ⁇ of opening device 4 perpendicular to hinge axis A (figure 3).
  • Protrusions 28 are located along edge 26 at a short distance from hinge axis A and, according to a preferred embodiment, have a trapezoidal shape; in particular, each protrusion 28 has a head 29 parallel to plane ⁇ and a flank 30 gradually sloping from head 29 to a recessed (i.e. farther than head 29 from plane ⁇ ) portion 33 of edge 26 closer to hinge axis A.
  • Lid 8 includes a pair of symmetrical projections 34 which extend from respective end portions of lip 25 close to hinge axis A in a direction perpendicular to flange 24 of lid 8.
  • Projections 34 have an elongated cross-section in a direction substantially parallel to plane ⁇ , and are flex-shaped so as to have a variable distance from plane ⁇ . More particularly, projections 34 include a first portion 35 adjacent to hinge axis 9 and having a maximum distance from plane ⁇ which is greater than the minimum distance of head 29 of protrusions 28 of edge 26 from plane ⁇ , a second portion 36 farther from hinge axis 9 and having a maximum distance from plane ⁇ which is less than said distance of head 29, and an intermediate portion 37 defining an inflexion area.
  • projections 34 is such that, when lid 8 is closed, projections 34 are housed within pouring aperture 6, with second portions 36 closely facing respective heads 29 of protrusions 28, intermediate portions 37 facing flanks 30 of protrusions 28, and first portions 35 facing portions 33 of edge 26.
  • lid 8 In use, when lid 8 is opened, projections 34 slightly flex inwards, essentially due to contact between flanks 30 and intermediate portions 37, and then elastically recover their undeformed configuration beyond protrusions 28. Lid 8 is kept open (figures 1 and 2) by projections 34 which, in the open position of the cap, extend forward and have their first portions 35 interfering with and resting on respective protrusions 28 of frame portion 5.
  • projections 34 extend from lid 8 perpendicularly; therefore, no need for complex moulding tools arise, and projections 34 are not deformed during extraction from moulding tools.
  • lid when lid is in the closed position no substantial interaction between projection 34 and frame portion 15, and only very slight deformation of projection 34 occurs during closure and opening of lid 8, so that projections 34 do not constitute a delicate part of the opening device and do not cause any reliability problem.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Claims (7)

  1. Dispositif d'ouverture refermable (4) pour un emballage de produit alimentaire versable (1) fabriqué à partir d'un matériau d'emballage en feuille (3), et comprenant une partie de base (5) prévue pour être fixée au dit matériau d'emballage (3) à l'endroit d'un trou (7) ou d'une partie détachable de celui-ci et définissant un orifice de versage (6) entouré par un bord (26) de la dite partie de base (5), et un couvercle (8) articulé à la dite partie de base (5) pour rotation autour d'un axe de pivotement (A), le dit couvercle (8) comportant au moins une saillie (34) qui s'étend à partir d'un côté du couvercle tourné vers le dit orifice de versage (6), la dite saillie (34) étant en contact avec une première partie (28) du dit bord (26) de la dite partie de base (5) pour maintenir le dit couvercle (8) ouvert, caractérisé en ce que la dite saillie (34) du dit couvercle (8) s'étend à partir du dit couvercle (8) perpendiculairement et comprend une première partie (35) prévue pour se loger entre la dite première partie (28) du dit bord (26) et le dit axe de pivotement (A) dans une position fermée du dit couvercle (8) et qui interfère avec la dite première partie (28) du dit bord (26) et repose sur celle-ci dans une position ouverte du dit couvercle (8), tandis qu'il n'existe pas d'interférence entre la dite première partie (35) de la dite saillie (34) et la dite première partie (28) du dit bord (26) dans la position fermée du dit couvercle (8).
  2. Dispositif selon la revendication 1, caractérisé en ce que le dit bord est un bord intérieur (26) de la dite partie de base (5) délimitant le dit orifice de versage (6), la dite première partie (28) du dit bord (26) faisant saillie vers un plan médian (π) du dit orifice de versage (6) perpendiculaire au dit axe de pivotement (A) par rapport à une deuxième partie (33) du dit bord (26) qui est plus proche du dit axe de pivotement (A) que la dite première partie (28) du dit bord (26), la dite saillie (34) étant logée dans le dit orifice de versage (6) de sorte que la dite partie (35) de la dite saillie (34) est en face de la dite deuxième partie (33) du dit bord (26) dans la position fermée du dit couvercle (8).
  3. Dispositif selon la revendication 2, caractérisé en ce que la dite saillie (34) du dit couvercle (8) a une section transversale allongée dans une direction sensiblement transversale au dit axe de pivotement (A), et elle comprend en outre une deuxième partie (36) plus éloignée du dit axe de pivotement (A) que la dite première partie (35) de la dite saillie (34) et prévue pour être reçue dans le dit orifice de versage (6) en face de la dite première partie (28) du dit bord (26) dans la dite position fermée du dit couvercle (8), la dite première partie (35) de la dite saillie (34) étant à une distance maximale du dit plan médian (π) plus grande qu'une distance minimale de la dite première partie (28) du dit bord (26) au dit plan médian (π).
  4. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que la dite première partie du dit bord (26) est une saillie (28) s'étendant à partir du dit bord (26) vers le dit plan médian (π), la dite saillie (28) étant limitée vers la dite deuxième partie (33) du dit bord (26) par un flanc incliné (30).
  5. Dispositif selon la revendication 4, caractérisé en ce que la dite saillie (34) du dit couvercle (8) comprend une partie intermédiaire (37) reliant les dites première et deuxième parties (35, 36) de la dite saillie (34) et située en face du dit flanc (30) de la dite saillie (28) dans la dite position fermée du dit couvercle (8).
  6. Dispositif selon une quelconque des revendications précédentes 2 à 5, caractérisé en ce que le dit couvercle (8) comprend deux dites saillies (34) situées symétriquement par rapport au dit plan médian (π), la dite partie de base (5) comprenant une paire correspondante de dites premières parties (28).
  7. Emballage en matériau en feuille pour produits alimentaires versables, comprenant un dispositif d'ouverture (4) selon une quelconque des revendications précédentes.
EP00111550A 2000-05-30 2000-05-30 Dispositif d'ouverture pour un emballage d'aliments pouvant s'écouler et emballage comportant ledit dispositif Expired - Lifetime EP1160172B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP00111550A EP1160172B1 (fr) 2000-05-30 2000-05-30 Dispositif d'ouverture pour un emballage d'aliments pouvant s'écouler et emballage comportant ledit dispositif
AT00111550T ATE277823T1 (de) 2000-05-30 2000-05-30 Öffnungsvorrichtung für eine verpackung für fliessfähige lebensmittel sowie mit derselben versehene verpackung
DE60014332T DE60014332T2 (de) 2000-05-30 2000-05-30 Öffnungsvorrichtung für eine Verpackung für fliessfähige Nahrungsmittel und diese umfassende Verpackung
ES00111550T ES2226653T3 (es) 2000-05-30 2000-05-30 Dispositivo de apertura para un envase para productos alimentarios vertibles, y envase que incluye el mismo.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00111550A EP1160172B1 (fr) 2000-05-30 2000-05-30 Dispositif d'ouverture pour un emballage d'aliments pouvant s'écouler et emballage comportant ledit dispositif

Publications (2)

Publication Number Publication Date
EP1160172A1 EP1160172A1 (fr) 2001-12-05
EP1160172B1 true EP1160172B1 (fr) 2004-09-29

Family

ID=8168869

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00111550A Expired - Lifetime EP1160172B1 (fr) 2000-05-30 2000-05-30 Dispositif d'ouverture pour un emballage d'aliments pouvant s'écouler et emballage comportant ledit dispositif

Country Status (4)

Country Link
EP (1) EP1160172B1 (fr)
AT (1) ATE277823T1 (fr)
DE (1) DE60014332T2 (fr)
ES (1) ES2226653T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE525597C2 (sv) 2002-12-06 2005-03-15 Tetra Laval Holdings & Finance Öppningsanordning förpackning samt sätt att förse en förpackning med en öppningsanordning
USD931101S1 (en) 2018-03-02 2021-09-21 Berlin Packaging, Llc Closure
USD900606S1 (en) 2018-03-02 2020-11-03 Berlin Packaging, Llc Closure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685550A5 (de) * 1992-10-13 1995-08-15 Tetra Pak Romont Oeffnungsvorrichtung am Deckel einer Fliessmittelpackung.
EP1025009B1 (fr) * 1996-11-01 2005-12-28 Tetra Laval Holdings & Finance SA Fermeture a couvercle basculant moulee d'une piece

Also Published As

Publication number Publication date
ES2226653T3 (es) 2005-04-01
DE60014332D1 (de) 2004-11-04
ATE277823T1 (de) 2004-10-15
EP1160172A1 (fr) 2001-12-05
DE60014332T2 (de) 2005-12-01

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