EP0548010B1 - Capsule de fermeture - Google Patents

Capsule de fermeture Download PDF

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Publication number
EP0548010B1
EP0548010B1 EP92810956A EP92810956A EP0548010B1 EP 0548010 B1 EP0548010 B1 EP 0548010B1 EP 92810956 A EP92810956 A EP 92810956A EP 92810956 A EP92810956 A EP 92810956A EP 0548010 B1 EP0548010 B1 EP 0548010B1
Authority
EP
European Patent Office
Prior art keywords
closure
indicator
closure unit
unit according
spout
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
EP92810956A
Other languages
German (de)
English (en)
Other versions
EP0548010A1 (fr
Inventor
Elmar Mock
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
Publication of EP0548010A1 publication Critical patent/EP0548010A1/fr
Application granted granted Critical
Publication of EP0548010B1 publication Critical patent/EP0548010B1/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
    • 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

Definitions

  • the invention is in the field of the packaging industry and relates to a closure unit according to the preamble of the independent claim.
  • closure units On containers for liquids such as metal cans or containers made of coated cardboard, for a reclosable opening and for convenient pouring, closure units, preferably made of plastic, consisting of a pouring part with a pouring opening and a closing part closing the pouring opening of the pouring part, are used in an opening of the container.
  • the two Swiss patent applications 2739 / 91-2 and 2740 / 91-9 by the same applicant describe such closure units.
  • the closure units described are cast using a multi-material injection molding process and consist of at least two materials which differ in at least one property. Further closure units are disclosed in WO 90/14287 and WO 84/00531, the closure unit according to WO 90/14287 consisting of two different materials.
  • a disadvantage of the known solutions is that after the first opening, the closure quality is often impaired because, for example, part of the closure function is destroyed or the anchoring of the closure part is no longer fully preserved.
  • Another disadvantage is usually that an additional manufacturing or assembly step is necessary to manufacture the tear-open element.
  • a visible, irreversible display indicator
  • the change in the indicator when it is opened for the first time should have no effect on the closing and sealing function of the closure unit.
  • This indicator should be able to be produced together with the closure unit without additional measures during the manufacture of the closure unit, in particular without an additional manufacture and / or assembly step, quasi in the same operation.
  • the closure unit according to the invention has at least two areas which each consist of one material, the materials of the different areas differing in at least one property. At least one of the areas extends both in the closure part and in the pouring part of the closure unit.
  • an indicator for example, one of the areas has a partial area that is located on the outside of the closure unit extends from the closure part to the pouring part and is anchored there.
  • the partial area serving as an indicator consists of one material and the outside of the pouring part, on which the indicator lies, is made of the other material.
  • the strength of the partial area and that of its anchoring are coordinated with one another in such a way that the first time they are opened, either the anchoring is released or the partial area is broken.
  • closure unit If the two materials are different in color, it is very easy to see whether the closure unit is new or reclosed.
  • a prerequisite for the fact that the closure quality is not influenced by this first opening is that the partial area serving as an indicator is not included in the closing and sealing function of the closure unit.
  • the closure unit according to the invention is produced in one operation using the method of multi-material injection molding. Only with such a method is it possible to produce the closure unit in the closed state with an indicator in the intact state in one operation.
  • the multi-material injection molding process is based on the fact that a pre-molded part is cast into a mold with a first material, that the mold is then at least partially replaced or moved away from the pre-molded part and that the closure unit is then cast with the second material, whereby the pre-molded part partially serves as a casting mold and is thereby at least partially encapsulated by the second material. This creates areas of two materials cast into one another, the contact surfaces adhering to one another more firmly or less firmly, depending on the casting parameters and material pairing.
  • the multi-material injection molding process is not limited to two materials, three or more materials can also be molded one above the other and / or around one another.
  • FIG. 1 shows an exemplary embodiment of the closure unit 1 according to the invention.
  • the pouring part 3 essentially consists of a closure part 2 and a pouring part 3, which are connected to one another for example with a hinge 5.
  • the pouring part 3 has an essentially tubular pouring spout 30, one opening (pouring opening) of which is covered by the closing part 2 in the closed state, and which carries a base 31 in the region of the other opening which is used for fastening to a container.
  • An indicator 8 can also be seen, which essentially consists of a web 80 and an anchoring 81, here, for example, in the form of a fork.
  • the web 80 extends from the closure part 2 over the outer surface of the spout 30.
  • FIG. 2 shows the same closure unit as FIG. 1, cut along the line labeled 6 in FIG. 1.
  • a wall 7 of a container can be seen here, which lies in the region of the container opening above the base 31 and is connected to it, for example, by welding.
  • A is the level in which the base 31 and the opening of the spout 30 extending against the container extend.
  • B denotes a surface in which the pouring opening 10 covered by the closure part 2 lies.
  • the pivot axis 51 of the hinge 5 for the pivotable connection of the closure part 2 and the pouring part 3 lies approximately in the plane B.
  • the closure part 2 can be seen, which covers the spout 30 in a region 14 and thus extends over the plane B in the closed state.
  • a cam 15 is provided in this overlap area, which protrudes toward the closure part 2 and serves as a locking device.
  • the closure part 2 has a molded-on opening lip 21 in the same area, which is used to open the closure unit.
  • the indicator 8, consisting essentially of the web 80 and the anchoring 81, is molded onto this lip 21.
  • the anchoring 81 extends between the container wall 7 and the base 31 and is held there, for example, by welding.
  • a further cam 18 is provided integrally with the spout, which causes the web to have a smaller cross section at this point, such that this point can serve as a predetermined breaking point 85.
  • the weakening is to be designed in such a way that the predetermined breaking point is weaker than the connection of the anchoring 81 to the container wall 7 and / or the base 31.
  • the closure part 2 When the closure part 2 is closed, it is also slightly deformed before it changes to the closed position. The deformation is also necessary because the lip 21 must be pulled over the cam 15 so that it clicks into place. Since the web 80 does not adhere or only sticks to the spout 30, it can easily be seen on the reclosed closure unit that it is torn; this is particularly the case if the material of the web 80 differs in color from the material of the spout 30.
  • cam 18 where it protrudes the furthest, is rounded and, following the rounding, rises steeply on one side and rises more flatly on the other from the surface of the spout 30, because it is produced using simple casting tools can be.
  • FIG. 3 shows, as a detail of a section similar to the section of FIG. 2, a further embodiment of the predetermined breaking point 85 in the web 80.
  • the surface of the web 80 facing towards the outside has a notch 19, while the surface of the spout 30 runs essentially continuously .
  • the web 80 can run anywhere on the outer surface of the spout 30. Several such webs can also be arranged.
  • the predetermined breaking point 85 can also be placed just below the lip 21, so that after the tear-open part 2 no web part remains.
  • FIG. 4 shows, in the same representation as FIG. 2, a further embodiment of the indicator 8.
  • This in turn has the shape of a web 80 with a predetermined breaking point 85 and an anchoring 81 that extends between the container wall 7 and the base 31 and is, for example, in the area of the lip 21 integrally formed on the closure part 2.
  • the web In the anchoring area, the web has a further cam 82, which is used to position the closure unit on the container when it is mounted on it before it is welded to it, for example.
  • FIG. 5 shows, in the same representation as FIG. 4, a further, exemplary embodiment of the indicator 8, which here also bears a cam 82 which serves to position the closure unit on the container.
  • the indicator 8 is not anchored by an anchoring between the container wall 7 and the base 31, but by means of a form-fitting connection 83 in the spout 30 itself.
  • the form-fitting connection 83 exists essentially from an indentation in the spout, which is poured out when the second material is poured.
  • FIG. 6 shows, again in the same representation as FIG. 4, a further exemplary embodiment of the indicator 8.
  • This in turn consists of a web 80 molded onto the closure part 2, for example in the area of the lip 21, with a form-fitting anchoring 84 in the spout 30.
  • this indicator has no predetermined breaking point.
  • the anchoring 84 is designed in such a way that the effort required to solve it is low.
  • the form fit is designed here, for example, in such a way that a molding in the spout (3) is poured out when the web (80) is poured. If the indentation forms an opening that narrows sufficiently towards the outside, the form fit cannot be closed again with simple means.
  • FIGS. 7 to 9 show further exemplary embodiments of indicators positively anchored in the spout 30, the positive locking of which is released when the closure unit is opened for the first time.
  • the form closure can no longer be closed when these embodiments are closed again, because its shape makes it irreversible, but because the webs are so weakly designed that they do not have sufficient inherent rigidity to be able to be positioned with sufficient accuracy when they are closed again .
  • the probability that they are deformed when they are opened for the first time very large, so that it is not possible to re-establish the positive connection.
  • Figure 7 shows such an embodiment as a view.
  • the indicators 8.1 and 8.2 are molded parts on the closure part 2, which are cast into groove-shaped molded parts of the spout 30.
  • the indicators 8.1 and 8.2 are pulled out of the grooves when the closure unit is opened for the first time. They are shaped so thin that they do not have sufficient inherent stability to be able to be reinserted into the indentations when they are closed again.
  • FIGS. 8 and 9 show, in a section that is essentially parallel to the plane of the pouring opening, further embodiments of such indicators.
  • FIG. 8 shows such an indicator 8.3 in a groove in the spout 30, which is arranged essentially on the plane of symmetry (6 in FIG. 1) of the closure unit.
  • Figure 9 shows two indicators 8.4 and 8.5 in corresponding grooves in the spout 30, which are arranged symmetrically to the plane of symmetry.
  • corresponding indicators can be provided in varying numbers over the entire outer surface of the spout 30.
  • the formations do not necessarily have to be narrow and long as shown, they can have a wide variety of shapes, but must have such a small dimension in at least one direction that their inherent stability is reduced in such a way that they cannot be reinserted into the corresponding formations when they are closed again.
  • FIGS. 10 and 11 show a further embodiment of the closure unit according to the invention with an indicator.
  • This indicator 9 consists essentially only of a predetermined breaking point in a correspondingly shaped closure part 2, the predetermined breaking point in the case of the slight deformation which occurs during the Opening the closure part 2 is unavoidable, breaks.
  • the predetermined breaking point 9 is attached to a point on the closure part 2 which has no part in the seal between the closure part 2 and the pouring part 3.
  • the closure function of the closure unit is not impaired by the break that occurs when it is opened for the first time and thus serves as an indicator.
  • FIG. 10 shows such a breaking point 9 intact, that is to say the new condition of the closure unit;
  • FIG. 11 shows the closure unit in the re-closed state with a broken break point.
  • the predetermined breaking point on the closure part 2 is produced, for example, as shown, by a slot 90 in the area 22 of the closure part 2, which overlaps the pouring part 3.
  • the slot 90 is closed against the edge of the closure part with a narrow bridge 91, which represents the actual predetermined breaking point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Glass Compositions (AREA)
  • Measurement Of Radiation (AREA)
  • Seal Device For Vehicle (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Push-Button Switches (AREA)
  • Slot Machines And Peripheral Devices (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)

Claims (14)

  1. Dispositif de fermeture en matière synthétique thermoplastique, pour la manutention et le stockage de produits liquides et montable sur un récipient, ce dispositif comportant un élément verseur (3) muni d'un bec (30) de forme sensiblement tubulaire et d'une embase (31) pour la fixation sur ledit récipient, et comportant également un élément obturateur (2) qui obture l'ouverture de l'élément verseur, ledit élément verseur (3) et ledit élément obturateur (2) étant mutuellement reliés de manière pivotable tout en présentant au moins deux zones dont chacune est constituée d'un matériau différent, ces matériaux différents se distinguant l'un de l'autre par au moins l'une de leurs propriétés, caractérisé en ce que l'élément obturateur (2) présente au moins un indicateur (8, 9) faisant partie de la zone réalisée dans l'un des matériaux, en ce que ledit indicateur (8, 9) s'étend sur la surface extérieure du bec (30) faisant partie de la zone de l'autre matériau, en ce que l'indicateur (8) est réalisé par un procédé de moulage par injection multi-matière dans l'un ou dans l'autre des matériaux, en ce que ledit indicateur est amené, par la première ouverture du dispositif de fermeture, de manière irréversible d'un premier état dans un deuxième état.
  2. Dispositif de fermeture selon la revendication 1, caractérisé en ce que l'indicateur (8) est une barrette (80) s'étendant de l'élément obturateur (2) à l'embase (31), ladite barrette (80) étant fixée à l'aide d'un ancrage (81) entre ladite embase (31) et la paroi (7) du récipient et présente une zone de rupture.
  3. Dispositif de fermeture selon la revendication 1, caractérisé en ce que l'indicateur (8) est une barrette (80) s'étendant entre l'élément obturateur et l'embase (31), ladite barrette (80) étant fixée sur le bec (30) à l'aide de moyens d'ajustage géométriques irréversibles (83) et présente une zone de rupture.
  4. Dispositif de fermeture selon la revendication 2 ou 3, caractérisé en ce que la zone de rupture (85) est un rétrécissement de la section transversale qui est disposé sensiblement au milieu de la longueur de la barrette (80) ou directement sur l'élément obturateur (2).
  5. Dispositif de fermeture selon la revendication 2 ou 3, caractérisé en ce que la zone de rupture (85) est un rétrécissement de la section transversale qui est activé par une nervure (15) présente dans la paroi du bec verseur ou par une encoche (19) présente dans la barrette (80).
  6. Dispositif de fermeture selon l'une des revendications 2 à 5, caractérisé en ce que l'indicateur (8) présente en outre une nervure de positionnement (82) qui sert à positionner le dispositif de fermeture sur le récipient.
  7. Dispositif de fermeture selon la revendication 1, caractérisé en ce que l'indicateur (8, 8.1 ... 8.5) est fixé sur l'élément verseur (3) à l'aide de moyens d'assemblage démontables, mais ne pouvant pas être à nouveau réassemblés.
  8. Dispositif de fermeture selon l'une des revendications 3 à 7, caractérisé en ce que l'indicateur (8) présente une barrette (80) qui se prolonge par une moulure incorporée dans la paroi du bec (30).
  9. Dispositif de fermeture selon la revendication 8, caractérisé en ce que la moulure incorporée est constituée par une ouverture se rétrécissant en direction de l'extérieur.
  10. Dispositif de fermeture selon la revendication 7, caractérisé en ce que l'indicateur (8.1, 8.2, 8.3, 8.4, 8.5) est constitué par un bourrelet moulé sur l'élément obturateur (2) dans une rainure sur la surface extérieure de l'élément verseur (3), et qui présente une rigidité propre si faible qu'il ne peut plus être réintroduit dans cette rainure après la première ouverture.
  11. Dispositif de fermeture selon l'une des revendications 2 à 10, caractérisé en ce que l'élément obturateur (2) présente une lèvre d'ouverture (21) et en ce que l'indicateur ou les indicateurs (8) sont moulés sur cette lèvre.
  12. Dispositif de fermeture selon l'une des revendications 2 à 11, caractérisé en ce que l'indicateur est disposé sur le plan de symétrie (6) du dispositif d'ouverture qui s'étend verticalement par rapport à l'ouverture de versement, ou bien les indicateurs sont disposés symétriquement par rapport à ce plan.
  13. Dispositif de fermeture selon la revendication 1, caractérisé en ce que l'indicateur (8) est constitué d'une zone de rupture (9) disposée dans une région de l'élément obturateur (2) qui, à l'état fermé du dispositif de fermeture, vient chevaucher le bec (30).
  14. Dispositif de fermeture selon la revendication 13, caractérisé en ce que la zone de rupture est constituée d'une fente (90) ou d'un pont (91) étroit fermant la fente (90) en direction du bord de l'élément obturateur (2).
EP92810956A 1991-12-12 1992-12-04 Capsule de fermeture Expired - Lifetime EP0548010B1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
CH369491 1991-12-12
CH368891 1991-12-12
CH3588/91 1991-12-12
CH369591 1991-12-12
CH3695/91 1991-12-12
CH3694/91 1991-12-12
CH3693/91 1991-12-12
CH369391 1991-12-12

Publications (2)

Publication Number Publication Date
EP0548010A1 EP0548010A1 (fr) 1993-06-23
EP0548010B1 true EP0548010B1 (fr) 1996-04-24

Family

ID=27428663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810956A Expired - Lifetime EP0548010B1 (fr) 1991-12-12 1992-12-04 Capsule de fermeture

Country Status (7)

Country Link
US (1) US5372284A (fr)
EP (1) EP0548010B1 (fr)
AT (1) ATE137185T1 (fr)
DE (1) DE59206114D1 (fr)
DK (1) DK0548010T3 (fr)
ES (1) ES2090578T3 (fr)
GR (1) GR3019882T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH687610A5 (de) * 1992-06-01 1997-01-15 Tetra Laval Holdings & Finance Verschlusseinheit.
CH686503A5 (de) * 1992-07-07 1996-04-15 Tetra Laval Holdings & Finance Behaelter.
CA2142274A1 (fr) * 1993-06-30 1995-01-12 Elmar Mock Dispositif de fermeture en plastique et methode pour sa fabrication
SE501891C2 (sv) * 1993-10-15 1995-06-12 Tetra Laval Holdings & Finance Öppningsanordning avsedd för vätskeförpackningar
AU729237B2 (en) * 1996-11-01 2001-01-25 Tetra Laval Holdings & Finance Sa One-piece molded flip cap closure
SE509810C2 (sv) * 1997-07-04 1999-03-08 Tetra Laval Holdings & Finance Öppningsanordning för förpackningsbehållare
US6467238B1 (en) * 2000-06-15 2002-10-22 Tetra Laval Holdings & Finance, Sa Direct injection molded closure and method therefor
US9108757B2 (en) * 2011-10-28 2015-08-18 Raul M. Paredes Container with pour spout
USD718140S1 (en) 2012-04-11 2014-11-25 Owens-Brockway Glass Container Inc. Container finish
USD725473S1 (en) 2013-12-06 2015-03-31 Owens-Brockway Glass Container Inc. Container

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Also Published As

Publication number Publication date
ES2090578T3 (es) 1996-10-16
DE59206114D1 (de) 1996-05-30
DK0548010T3 (da) 1996-06-24
ATE137185T1 (de) 1996-05-15
GR3019882T3 (en) 1996-08-31
US5372284A (en) 1994-12-13
EP0548010A1 (fr) 1993-06-23

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