EP3424835B1 - Deckel für eine lebensmittelverpackung - Google Patents

Deckel für eine lebensmittelverpackung Download PDF

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Publication number
EP3424835B1
EP3424835B1 EP18181270.2A EP18181270A EP3424835B1 EP 3424835 B1 EP3424835 B1 EP 3424835B1 EP 18181270 A EP18181270 A EP 18181270A EP 3424835 B1 EP3424835 B1 EP 3424835B1
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EP
European Patent Office
Prior art keywords
cap
spout
guiding structure
neck
sidewall
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.)
Active
Application number
EP18181270.2A
Other languages
English (en)
French (fr)
Other versions
EP3424835C0 (de
EP3424835A1 (de
Inventor
Göran Johansson
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 EP23200416.8A priority Critical patent/EP4279412A3/de
Publication of EP3424835A1 publication Critical patent/EP3424835A1/de
Application granted granted Critical
Publication of EP3424835C0 publication Critical patent/EP3424835C0/de
Publication of EP3424835B1 publication Critical patent/EP3424835B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • B65D41/0421—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck and combined with integral sealing means contacting other surfaces of a container neck

Definitions

  • the present solution relates to a cap for closing a pouring spout. More particularly, the present solution relates to a cap for closing a pouring spout of a food package.
  • Food packages are generally provided with an opening arrangement in order to facilitate discharging of the enclosed food product.
  • the opening arrangement may either be an irreversible opening, i.e. once the package is opened it may not be closed, or a recloseable opening device. In order to extend the shelf-life and quality of the food product the latter is often desired.
  • a common way of providing a recloseable opening device is to arrange a threaded neck including a pouring spout on the upper part of the package.
  • the threaded neck is designed such that it may receive a cap, including internal threads, such that the cap is capable of being unscrewed from the neck. Since the cap covers the open spout of the neck, the enclosed food product is protected from the outer environment and the quality of the product may thus be preserved during some time.
  • oblique angle it is meant that the angle under which the cap is screwed onto a threaded neck portion of the container deviates from an axis which is parallel to the symmetry axis of the pouring spout.
  • the interior of the cap may for this purpose be provided with a guiding rim arranged to guide the radial position of the spout when the cap is threaded onto the neck.
  • a guiding rim arranged to guide the radial position of the spout when the cap is threaded onto the neck.
  • misalignment of the spout may still occur, whereby the sealing rim, by mistake, may be positioned on top of the spout rather than on the side of the spout.
  • the sealing rim will press the spout downwards, leading to damaging and defects on the spout.
  • One attempt at solving the issue is shown in the Germain patent publication DE2109690 .
  • a cap having a sealing lip and a wedge-shaped structure between the inner wall of the cap and the sealing lip.
  • the wedge-shaped structure urges a neck of a bottle on which the cap is screwed on into the wedge-shaped structure thus minimizing damages on the upper part of the neck during closing of the bottle.
  • the solution is provided by a cap according to the appended claims.
  • the cap is used for closing a spout of a neck of a package.
  • the cap comprises a sidewall being provided with inner threads for engagement with corresponding outer threads of the neck, and an inner top surface forming a closing surface for the spout.
  • the sidewall has an uppermost portion connecting to the inner top surface, wherein said uppermost portion comprises a guiding structure.
  • the guiding structure extends around the entire uppermost portion. Thereby the spout will be guided independently on the circumferential position of the wrongly positioned part of the spout.
  • the guiding structure is formed by an inner surface of the sidewall being tilted radially inwards. The guiding structure will thus urge the spout radially inwards.
  • the tilting angle of at least a part of the guiding structure is constant.
  • the guiding structure extends from a vertical portion of the sidewall to the inner top surface. Along this extension, the guiding structure may be continuous.
  • the guiding structure comprises a depression forming a stop for the spout.
  • the depression may also form a snap locking of the spout, as the upper end of the spout may fit in the depression.
  • the cap further comprises a sealing lip arranged radially inwards of the guiding structure.
  • the sealing lip may seal against an inner surface of the spout.
  • the depression is arranged between the sealing lip and the guiding structure.
  • a neck assembly comprises a spout and a cap according to the first aspect presented above.
  • the open end of the spout is arranged radially inwards of the guiding structure of the cap.
  • the food package 10 has a shape of a bottle formed by a body portion 11, which may preferably be made of a carton-based laminate and a top portion 12, which may preferably be made of a polymer material.
  • the top portion 12 is provided with a neck 20 forming the upper part of the polymer top portion 12.
  • the neck 20 may be integrally formed with the top portion 12, such that the entire top portion 12, including the neck 20, may be manufactured as a single piece.
  • a cap 30 is arranged onto the neck for sealing a spout 100 (see e.g. Fig. 3 ) forming the upper end of the neck 20.
  • the cap 30 may optionally be provided with a tamper ring 50 as is well known in the art.
  • the package 10 may be manufactured by first forming a sleeve of the carton-based laminate, i.e. a tubular body extending between two open ends. In a second step, performed before, after, or in parallel with the sleeve forming, the polymer top portion 12 is manufactured by molding.
  • the polymer top portion 12 may, as is shown in Fig. 1 , comprise a shoulder section 13 arranged below the neck 20 which may be injection moulded on top of the tubular body.
  • the plastic top portion 12 may be available as a single piece and then attached to the tubular body.
  • the shoulder section 13 is arranged to connect the sleeve, which forms the structure for the body portion 11, to the neck 20.
  • the neck 20 is preferably provided with threads 102 (see Fig. 3 ) for engaging with corresponding threads 32 (see Fig. 3 ) of the cap 30 including the tamper ring 50.
  • the neck 20 and the shoulder section 13 may be provided as one piece, or as two separate pieces which are molded together.
  • the sleeve is filled with food content.
  • this is done by turning the sleeve and the top portion 12 assembly upside down, such that the remaining open end of the sleeve is facing upwards.
  • the open end of the sleeve may be sealed and folded to a flat bottom as illustrated in Fig. 1 .
  • filling of the package 10 may be performed by sealing the bottom end, and thereafter inserting a filling nozzle through the spout 100 before the cap 30 is screwed onto the spout 100.
  • Figs. 2a-b an example of a prior art cap and neck assembly is shown.
  • the neck 20 is provided with a spout 100.
  • the spout 100 forms an open end of the package through which the content of the associated package may be discharged from.
  • the spout 100 is provided with an inner wall 101 which is intended to seal against a downwardly projecting sealing lip 44' of the cap 30'.
  • the sealing lip 44' of the cap 30' is arranged radially inwards of the spout 100.
  • Radially outwards of the sealing lip 44' a guiding rim 46' is provided.
  • the purpose of the guiding rim 46' is to urge the upper end of the spout 100 to snap into a radial position between the lip 44' and the rim 46'. This is shown in Fig. 2a , where the spout 100 is positioned correctly inside the cap 30'.
  • Fig. 2b shows another situation in which the cap 30' has been threaded onto the spout 100 differently.
  • the spout 100 has been positioned slightly off-center when the cap 30' has been arranged onto it, whereby the guiding rim 46' hits the upper edge of the spout 100.
  • the guiding rim 46' will cause a deformation of the spout 100.
  • the spout 100 is thereby prevented from moving to its intended position which greatly reduces the closing functionality of the cap and neck assembly.
  • Figs. 3 and 4 This problem is solved by modifying the cap in accordance with the embodiment shown in Figs. 3 and 4 . While the cap and neck assembly is shown in Fig. 3, Fig. 4 is only showing details of the cap 30. As can be seen in Fig. 3 the neck 20 and the associated spout 100 is identical with the configuration shown in Figs. 2a-b . Hence the cap 30 will work perfectly fine with existing neck/spout designs.
  • the neck 20 is provided with threads 102 which projects radially outwards from an outer sidewall 103.
  • the threads 102 are arranged somewhere between the shoulder section 13 and the upper end of the spout 100 in order to engage with internal threads 34 of the cap 30.
  • the spout 100 may typically have a cylindrical shape, such that the cross-section of the spout 100 is circular.
  • the material thickness of the spout 100 may be approximately 0.5-3 mm.
  • a cylindrical sidewall 32 is provided with inner threads 34 for engagement with the corresponding outer threads 102 of the neck 20.
  • the cap 30 further comprises an inner top surface 36 which forms a closing surface for the spout 100.
  • the sidewall 32 of the cap 30 has an uppermost portion 38 connecting to the inner top surface 36.
  • a guiding structure 40 is provided at this uppermost portion 38 .
  • the guiding structure 40 is arranged on the inner side of the cap 30 such that it faces the spout 100.
  • the cap 30 further comprises a sealing lip 44 extending in a normal direction from the inner top surface 36.
  • the sealing lip 44 is configured to seal against the inner wall 101 of the spout 100 when the cap 30 is threaded onto the neck 20 in a similar manner as described above with reference to Figs. 2a-b .
  • the sealing lip 44 may have a bead 45 extending radially outwards and towards the spout 100 for further increasing the contact, and hence the sealing action, between the cap 30 and the neck 20.
  • the direction of the sealing lip 44 may be radially outwards, preferably only in a slight manner, such that when the cap 30 is screwed onto the neck 20, the spout 100 will urge the sealing lip 44 to deflect radially inwards. Due to the flexibility of the sealing lip 44 it will be biased to return to its initial, or idle position, thus further improving the sealing action by means of the bead 45 pressing against the spout 100.
  • the guiding structure 40 ensures that the cap 30 engages with the spout 100 in a desired manner, and in that the upper end of the spout 100 is guided correctly to its final position when the cap 30 is fully closed.
  • the guiding structure 40 is formed by an inner surface 42 of the sidewall 32 being tilted radially inwards, in a direction towards the inner top surface 36.
  • This tilted inner surface 42 preferably extends around the entire uppermost portion 38 such that the guiding structure 40 is circular.
  • the tilting angle ⁇ of the guiding structure 40 is constant, both in vertical and circumferential direction.
  • the tilt angle ⁇ here measured relative a normal direction of the cap or a direction being parallel with the longitudinal axis of the package, is e.g. in the range of 10-70°, even more preferably in the range of 30-60°.
  • the tilt angle ⁇ should preferably be as small as possible in order to ensure smooth guidance of the spout 100. However, a small tilt angle ⁇ would normally require a rather long guiding distance making the cap 30 less compact. A trade-off between short distance and low tilt angle is therefore typically required.
  • the guiding structure 40 i.e. the inner surface 42, extends from a vertical portion of the sidewall 32 towards the inner top surface 36.
  • the inner surface 42 extends entirely to the inner top surface 36.
  • the inner surface 42 ends slightly before it reaches the inner top surface 36.
  • a small depression 46 dimensioned to receive the upper end of the spout 100 and to form a stop, preventing further movement of the cap 30 relative the spout 100.
  • the depression 46 In a radial direction the depression extends from the sealing lip 44 to the end of the tilted inner surface 42.
  • the depression 46 is preferably circular such that it extends around the entire circumference of the cap 30.
  • the tilt angle ⁇ of the inner surface 42 is not constant, but varies in the vertical direction.
  • the tilt angle ⁇ may initially be very small but increases upwards, such that at the uppermost position, i.e. closest to the inner top surface 36, the tilt angle ⁇ is almost 90°.
  • the guiding structure 40 should thus be configured to ensure that the spout 100, when entering the interior of the cap 30 and moving relative the cap 30 towards a closed end position, is prevented from being stuck along its way.
  • the guiding structure 40 should therefore preferably be free from any distinct edges or sharp contours, as such may prevent the spout 100 from moving correctly.
  • the side wall 32 of the cap 30 should connect with the inner top surface 36 by means of a smooth guiding structure 40 such that if the spout 100 contacts the guiding structure 40, it will be guided radially inwards towards the end position.
  • the guiding structure 40 has been described as a tilted surface 42. It should however be noted that other configurations of the guiding structure 40 are equally well applicable for achieving the same functionality. For example, instead of a circular surface 42 the guiding structure 40 may be provided as one or more tilted bars arranged between the side wall 32 and the inner top surface 36. Other suitable embodiments of guiding structures 40 may also fit within the concept described herein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Claims (3)

  1. Deckel (30) zum Verschließen eines Ausgusses (100) eines Halses (20) einer Verpackung (10), umfassend:
    eine Seitenwand (32), die mit einem Innengewinde (34) zum Eingriff mit einem entsprechenden Außengewinde (102) des Halses (20) versehen ist, und eine innere obere Fläche (36), die eine Verschlussfläche für den Ausguss (100) bildet, wobei die Seitenwand (32) einen obersten Abschnitt (38) aufweist, der mit der inneren oberen Fläche (36) verbunden ist, wobei der oberste Abschnitt (38) eine Führungsstruktur (40) aufweist, wobei die Führungsstruktur (40) durch eine Innenfläche (42) der Seitenwand (32) gebildet wird, die radial nach innen geneigt ist, wobei sich die Führungsstruktur (40) von einem vertikalen Abschnitt der Seitenwand (32) erstreckt, wobei
    die Führungsstruktur (40) ferner eine Vertiefung (46) umfasst, die einen Anschlag für den Ausguss (100) bildet, und der Deckel (30) ferner eine Dichtlippe (44) umfasst, die radial innerhalb der Führungsstruktur (40) angeordnet ist, wobei die Führungsstruktur (40) durch eine Innenfläche (42) der Seitenwand (32) gebildet wird, die radial nach innen in Richtung auf die innere obere Fläche (36) geneigt ist,
    die Führungsstruktur (40), d. h. die Innenfläche (42), sich von einem vertikalen Abschnitt der Seitenwand (32) zur inneren oberen Fläche (36) erstreckt,
    dadurch gekennzeichnet, dass
    die Dichtlippe (44) einen Wulst (45) aufweist, der sich radial nach außen erstreckt, um den Kontakt und damit die Dichtwirkung zwischen dem Deckel (30) und dem Hals (20) weiter zu erhöhen,
    die Vertiefung (46) zwischen der Dichtlippe (44) und der Führungsstruktur (40) angeordnet ist,
    die Vertiefung (46) sich zwischen der inneren oberen Fläche (36) und der geneigten Innenfläche (42) befindet und so dimensioniert ist, dass sie ein oberes Ende des Ausgusses (100) aufnimmt und einen Anschlag bildet, um eine weitere Bewegung des Deckels (30) relativ zum Ausguss (100) zu verhindern, wobei sich die Vertiefung (46) in einer radialen Richtung von der Dichtlippe (44) zum Ende der geneigten Innenfläche (42) erstreckt,
    die geneigte Innenfläche (42) kurz vor Erreichen der inneren oberen Fläche (36) endet, und
    der Kippwinkel (a) mindestens eines Teils der Führungsstruktur (40) konstant ist.
  2. Deckel (30) gemäß Anspruch 1, wobei sich die Führungsstruktur (40) um den gesamten obersten Abschnitt (38) erstreckt.
  3. Halsanordnung, umfassend einen Ausguss (100) und einen Deckel (30) gemäß einem der vorhergehenden Ansprüche, wobei das offene Ende des Ausgusses (100) radial innerhalb der Führungsstruktur (40) des Deckels angeordnet ist.
EP18181270.2A 2017-07-03 2018-07-02 Deckel für eine lebensmittelverpackung Active EP3424835B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23200416.8A EP4279412A3 (de) 2017-07-03 2018-07-02 Deckel für eine lebensmittelverpackung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17179239 2017-07-03

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP23200416.8A Division-Into EP4279412A3 (de) 2017-07-03 2018-07-02 Deckel für eine lebensmittelverpackung
EP23200416.8A Division EP4279412A3 (de) 2017-07-03 2018-07-02 Deckel für eine lebensmittelverpackung

Publications (3)

Publication Number Publication Date
EP3424835A1 EP3424835A1 (de) 2019-01-09
EP3424835C0 EP3424835C0 (de) 2023-11-08
EP3424835B1 true EP3424835B1 (de) 2023-11-08

Family

ID=59276571

Family Applications (2)

Application Number Title Priority Date Filing Date
EP23200416.8A Pending EP4279412A3 (de) 2017-07-03 2018-07-02 Deckel für eine lebensmittelverpackung
EP18181270.2A Active EP3424835B1 (de) 2017-07-03 2018-07-02 Deckel für eine lebensmittelverpackung

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP23200416.8A Pending EP4279412A3 (de) 2017-07-03 2018-07-02 Deckel für eine lebensmittelverpackung

Country Status (2)

Country Link
EP (2) EP4279412A3 (de)
WO (1) WO2019007913A1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965256A (en) * 1959-04-10 1960-12-20 Donald E Yochem Closure for a container
US4907709A (en) * 1987-11-11 1990-03-13 Dainippon Ink And Chemicals, Inc. Combination of synthetic resin bottle and closure therefor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2109690A1 (de) * 1971-03-02 1972-09-14 Heinlein, Hans, 8502 Zirndorf Schraubkappe für Flaschen aus Kunststoff
GB2264108B (en) * 1992-01-24 1995-11-15 Beeson & Sons Ltd A container closure assembly
US5975321A (en) * 1990-08-09 1999-11-02 Portola Packaging, Inc. Snap-on, screw-off cap with tamper-evidencing skirt and container neck
US7891512B2 (en) * 2006-12-06 2011-02-22 Reckitt Benckiser Inc. Linerless closure for a container
NL2008558C2 (en) * 2012-03-29 2013-10-01 Ipn Ip Bv Container closure assemblies.
EP3000744A1 (de) * 2014-09-29 2016-03-30 William M. Heyn Induktionsheissversiegelte behälterverschlüsse

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965256A (en) * 1959-04-10 1960-12-20 Donald E Yochem Closure for a container
US4907709A (en) * 1987-11-11 1990-03-13 Dainippon Ink And Chemicals, Inc. Combination of synthetic resin bottle and closure therefor

Also Published As

Publication number Publication date
WO2019007913A1 (en) 2019-01-10
EP3424835C0 (de) 2023-11-08
EP4279412A3 (de) 2024-01-17
EP3424835A1 (de) 2019-01-09
EP4279412A2 (de) 2023-11-22

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