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EP2780242A1 - Col, bouchon, et emballage alimentaire comprenant un tel col et un tel bouchon - Google Patents

Col, bouchon, et emballage alimentaire comprenant un tel col et un tel bouchon

Info

Publication number
EP2780242A1
EP2780242A1 EP12797786.6A EP12797786A EP2780242A1 EP 2780242 A1 EP2780242 A1 EP 2780242A1 EP 12797786 A EP12797786 A EP 12797786A EP 2780242 A1 EP2780242 A1 EP 2780242A1
Authority
EP
European Patent Office
Prior art keywords
neck
cap
sleeve
guiding elements
tamper ring
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.)
Withdrawn
Application number
EP12797786.6A
Other languages
German (de)
English (en)
Inventor
Göran Johansson
Bengt HÅKANSSON
Pär RYDBERG
Göran DAHL
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 EP2780242A1 publication Critical patent/EP2780242A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3442—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
    • B65D41/3447—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container the tamper element being integrally connected to the closure by means of bridges
    • 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
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/023—Neck construction
    • B65D1/0246—Closure retaining means, e.g. beads, screw-threads

Definitions

  • a neck, a cap, and a food package comprising such neck and cap
  • the present invention generally relates to the field of packaging technology. More particularly, the present invention relates to a neck and a cap for a food package as well as to a food package including such neck and cap.
  • enclosing food products may be provided with a sealable cap, engaging with a neck of the package, and a tamper ring. After filling of the package the cap and tamper ring is mounted on the neck of the package. The tamper ring is connected to the cap via yielding bridges which serves as a tamper proof of the package.
  • the basic functionality of the tamper ring is that if a user is unscrewing the cap the yielding bridges will burst, and hence the tamper ring is no longer connected to the cap. A customer may thus detect if the package has been opened prior to his/her intent of buying the package.
  • the cap which includes interior threads for engaging with outer threads of the neck, is removed from the neck by a rotating movement along the threads. Hence, a vertical movement of the cap relative the neck is achieved which results in a removal of the cap from the neck.
  • the cap and the tamper ring are pre-manufactured as a single piece, whereby the yielding bridges are provided as relatively thin spaced-apart filaments of polymeric material.
  • the tamper ring is prevented from moving upwards on the neck.
  • the yielding bridges will be subject to a tension which increases during the rotational and vertical movement of the cap, until the tension causes the yielding bridges to burst.
  • the opening sequence will thus be considered as jerky and irregular, which greatly reduces the overall user friendliness of the package.
  • the basic idea is to provide a neck and a corresponding cap/tamper ring assembly which, upon unscrewing the cap from the neck, provides a first rotational and vertical movement of the cap relative the neck, and a second rotational and vertical movement of the tamper ring relative the neck, wherein the direction of the first vertical movement is opposite the direction of the second vertical movement.
  • a neck for a food package comprises a tubular wall extending from a first cylindrical portion to a second cylindrical portion, said first portion being configured to be attached to a package body and said second portion is defining a pouring spout, wherein said second portion comprises threads provided on the outer periphery of said second portion for engagement with internal threads of a cap, and wherein said first portion comprises a plurality of guiding elements provided on the outer periphery of said first portion for engagement with corresponding internal guides of a tamper ring, each of said guiding elements comprises a curved guiding path.
  • a cap for closing a pouring spout of a neck of a food package comprises a tubular wall extending from an open end to a closed end, and a tamper ring connected to said tubular wall by means of a plurality of yielding bridges, said tubular wall comprises threads provided on the inner periphery for engagement with outer threads of a neck, and wherein said tamper ring comprises a plurality of guides provided on the inner periphery for engagement with corresponding outer guiding elements of said neck, each of said guides comprises a curved guiding path.
  • a food package comprising a sleeve made of a carton-based laminate, a neck according to the first aspect connected to said sleeve, and a cap according to the second aspect screwed onto said neck .
  • a method for providing a food package according to the third aspect comprises the steps of providing a neck according to the first aspect, providing a cap according to the second aspect, screwing said cap onto said neck thus forming a neck-cap assembly, providing a carton-based sleeve extending between two open ends, moulding said neck-cap assembly to one of said open ends of said sleeve, introducing food product through the remaining open end of said sleeve, and folding and sealing the remaining open end of said sleeve.
  • a cap-neck assembly comprising a neck and a cap according to the description above or below is provided, hereinafter referred to as a cap-neck assembly.
  • Fig. 1 illustrates a carton-based bottle having a top section made of plastic and a body made of a carton-based laminate
  • Fig. 2 is a side view of a neck according to an embodiment
  • Fig. 3 is an isometric view of a cap for engagement with the neck shown in Fig. 2;
  • Figs. 4a-c are side views showing an opening sequence of the cap/neck arrangement shown in Figs. 2 and 3. Detailed Description
  • the food package 100 has a shape of a bottle formed by a body portion 102, which may be made of a carton-based laminate, a top portion 104, which may be made of plastic, and a cap 106 provided with a tamper ring 108.
  • Such kind of package may be provided by first forming a sleeve of the carton- based laminate, i.e. a tubular body extending between two open ends.
  • the plastic top portion 104 is provided by molding.
  • the plastic top portion 104 may comprise a shoulder section and a neck portion.
  • the shoulder section is thus arranged to connect the sleeve, which forms basis for the body portion 102, to the neck portion.
  • the neck portion is preferably provided with threads for engaging with corresponding threads of the cap 106 including the tamper ring 108.
  • sleeve is filled with food content.
  • this is done by turning the sleeve and the top portion 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 such that a package according to Fig. 1 is formed.
  • the neck i.e. the upper part of the top portion 104, is shown in further details in Fig. 2.
  • the neck 200 includes a tubular wall 204 which extends from a first cylindrical portion 206, i.e. the lower part of the neck 200, to a second cylindrical portion 208, i.e. the upper part of the neck 200 when the neck forms part of a food package standing upright.
  • the first cylindrical portion 206 is configured to be connected to a main body of a package (not shown), either directly or via a shoulder section (not shown).
  • the second cylindrical portion 208 extends from the first cylindrical portion 206 to an upper end 210 which forms a pouring spout through which the food product enclosed by the finished package is allowed to exit.
  • the pouring spout 210 may in some embodiments be sealed by a membrane covering the entire pouring spout 210, i.e. the open end of the second cylindrical portion 208.
  • the membrane is removed when the package is opened for the first time, which e.g. is described in the co-pending international patent application PCT/EP201 1/057886 by the same applicant.
  • the second cylindrical portion 208 is configured to receive and guide a recloseable cap for closing the pouring spout 210, thus preventing enclosed food product to discharge unintentionally.
  • the cylindrical portion 208 has an annular cross section, which outer diameter is slightly smaller than the inner diameter of the cap.
  • the guiding functionality is provided by means of threads 212 arranged on the outer periphery of the second cylindrical portion 208.
  • the threads 212 are
  • the threads 212 are preferably arranged as three parallel protrusive elements
  • Each protrusive element 213 which run helically along the periphery of the second cylindrical portion 208.
  • Each protrusive element 213 is preferably extending approximately one turn of the periphery and has an angle of inclination of approximately 6 mm per revolution.
  • the first cylindrical portion 206 is configured to receive and guide a tamper ring, initially connected to the cap by means of yielding bridges which will be described in further detail below.
  • the first cylindrical portion 206 is provided with a plurality of guiding elements 214 arranged on the outer periphery of the first portion 206.
  • the guiding elements 214 are constructed to engage with corresponding internal guides of the tamper ring.
  • Each one of the guiding elements 214 has a curved shape forming a curved guiding path 216.
  • Each guiding element 214, and consequently each guiding path, extends from a start position 218 to an end position 220.
  • the start position 218 is defined as the position of the guiding path at which a tamper ring guide is initially engaged. Consequently, the end position 220 is defined as the position of the guiding path at which the same tamper ring guide is finally disengaged.
  • each guiding element 214 is defined by the lower surface of the guiding element 214.
  • the guiding element 214 has a vertical extension between the lower surface and an upper surface.
  • the curved guiding path includes a downward slope, i.e. a decline which has a negative derivative compared to the incline of the threads 212 of the second cylindrical portion 208, which has a positive derivative.
  • All references to derivatives are made with respect to a two-dimensional projection of the neck wherein the longitudinal axis Z of the neck coincides with an y-axis, and wherein an x-axis coincides with the radial direction of the tubular wall. Due to the curved path, the absolute value of the derivative is continuously increasing when moving from the start position 218 to the end position 220.
  • the guiding elements 214 are disposed such that the derivative at the start position 218 of the curved guiding path is zero, or close to zero. This means that the tangent at the start position 218 is perpendicular to the longitudinal axis Z of the neck.
  • the shape of the curved guiding path corresponds to a circular arc. However, other continuous shapes are also possible, as long as the absolute value of the derivative of the guiding path is increasing along the curved path.
  • the curved guiding paths are advantageous in that a tamper ring, which is urged to rotate upon rotation of the cap, will also be urged downwards by the curved guiding elements.
  • the initial vertical movement will be relatively small but continuously increasing as the downward slope of the curved guiding paths is increasing.
  • a user will only need to apply a small force at the beginning of the rotating movement, and the force will need to increase continuously in order to separate the tamper ring from the cap. Due to the increased amount of force needed, starting from a relatively low force, a user or customer will experience a smooth opening sequence.
  • the neck 200 may be configured to fit with food packages enclosing a volume between 0,1 and 5 liters.
  • the pouring spout 210 of the neck 200 is approximately 45 mm in diameter and is thus configured to form part of a 1 liter food package.
  • the neck 200 comprises a plurality of guiding elements 214, wherein the number of guiding elements 214 disposed around the first portion 206 is between 5 and 25.
  • Each guiding element 214 preferably forms a circular arc having a length between 10 to 120° of the periphery of the neck 200, and the vertical distance between the start position 218 and the end position 220 is preferably between 0,5 and 4 mm.
  • a neck 200 comprises 20 guiding elements 214, each guiding element being 5 mm long and having a radius of 40 mm.
  • the depth of each guiding element 214 i.e. the length measured in a radial direction of the tubular wall 204, is approximately 2,5 mm.
  • the guiding elements 214 may be disposed in at least two subsections, wherein the distance between adjacent guiding elements 214 in a first subsection is smaller than the distance between two subsections.
  • the tamper ring will be allowed to retain at its original distance from the cap at peripheral positions corresponding to the space between two subsections, while at the same time be urged downwards by the guiding paths of each subsections. Hence, the yielding bridges will not break simultaneously, which thus reduces the momentary force applied by a consumer for achieving the desired opening action.
  • a cap 300 is shown.
  • the cap 300 is configured for closing the pouring spout 210 of a neck 200 of a food package 100, and comprises a tubular wall 304 extending from an open end 306 to a closed end 308.
  • a tamper ring 310 is connected to the tubular wall 304 by means of a plurality of yielding bridges 312.
  • tubular wall 304 comprises threads 314 provided on the inner periphery for engagement with outer threads 212 of the neck 200.
  • the tamper ring 310 is provided a plurality of guides 316 provided on the inner periphery for engagement with corresponding outer guiding elements 214 of said neck 200.
  • Each of said guides 316 forms a curved guiding path 318 extending from a start position 320 to an end position 322, wherein the distance along a longitudinal axis Z of the cap 300 between said start position 320 and said open end 306 is less than the corresponding distance between said end position 322 and said open end 306.
  • the guides 316 are disposed at equal distance from each other around the inner periphery of the tubular wall 304, and the shape of each guiding path 318 corresponds to the shape of the guiding paths 216 of the neck.
  • the upper surface of the guides 316 i.e. the guiding path 318 arranged to align with the guiding path 216 of the neck 200, has a shape of a circular arc.
  • the depth of the guides 316 i.e. the length measured in a radial direction of the tubular wall 304, is preferably less than the depth of the guiding elements 214 of the neck 200.
  • the guiding elements 214 of the neck 200 are allowed to be folded downwards when the tamper ring 210 is screwed onto the neck 200. Due to the flexibility of the folded guiding elements 214 they are urged upwards to their idle position, thus creating a radial pressing force on the tamper ring 310. This may be advantageous in that when the yielding bridges have burst, the tamper ring 310 will still be held at its position by the pressing force induced by the guiding elements 216 of the neck 200.
  • the downward or vertical movement of the tamper ring 310 will cause the tamper ring 310 to be positioned below the guiding elements 214 of the neck. Due to the flexibility of the guiding elements 214, those will return to their idle position and extend above and beyond the tamper ring 310. Hence, it will not be possible to return the tamper ring 310 upwards and adjacent to the cap 300, since the guiding elements 214 will act as preventive means keeping the tamper ring at a significant distance from the cap 300.
  • Fig. 4a to 4c shows an opening sequence in more detail.
  • the tamper ring 310 is illustrated as transparent in order to show the interaction between the guides of the cap and the guiding elements of the neck.
  • Figs. 4a-c may also be used to illustrate a cap/neck assembly as further defined by the claims.
  • the cap 300 has been screwed onto the neck 200.
  • the neck 200 is assumed to be connected to a food package (not shown) according to what has been described above.
  • the yielding bridges 312 are intact and form a connection between the cap 300 and the tamper ring 310.
  • the guides 316 of the cap 300 are aligned with the guiding elements 214 of the neck 200 such that the respective guiding paths are engaged to each other. That is, the upper side of a guide 316 is aligned with the lower side if a corresponding guiding element 214.
  • the start position of the guides 316 are vertically aligned with the end position of the guiding elements 214.
  • the guides and guiding elements are disposed in a subsection, wherein a second subsection is arranged on the opposite side of the cap/neck. Hence, no guides or guiding elements are provided between the two subsections.
  • the cap has been subject to a rotational movement such that the peripheral distance between a guide and a corresponding guiding element has changed. Due to such rotational movement, the cap 300 is urged upwards while the tamper ring 310 is urged downwards. However, the tamper ring is still connected to the cap via the yielding bridges. As can be seen in Fig. 4b the tamper ring 310 will bend slightly, which is due to the fact the it is the guides/guiding elements which provide the vertical movement of the tamper ring 310. Hence, at positions where there are no guides/guiding elements present, the tamper ring 310 will only be subjected to a rotational movement. This is the case in the area between two adjacent sub-sections of guiding elements, wherein the number of such areas may vary according to specific applications and embodiments.
  • Fig. 4c the cap 300 has been rotated such that the yielding bridges 312 have deformed sufficiently to break.
  • the breaking occurs due to a rotational movement of the cap 300 forcing the cap 300 to move upwards due to the threads, and at the same time forcing the tamper ring 310 to move downwards due to the curved guides/guiding elements.
  • a method for providing a food package is not illustrated in the drawings yet comprises the steps of providing a neck according to the first aspect, providing a cap according to the second aspect, screwing said cap onto said neck thus forming a neck- cap assembly, providing a carton-based sleeve extending between two open ends, moulding said neck-cap assembly to one of said open ends of said sleeve, introducing food product through the remaining open end of said sleeve, and folding and sealing the remaining open end of said sleeve.
  • This method as such is previously disclosed in patent applications by the present applicant, e.g. in WO2009/154535 and in regard of further details reference is made to that application.
  • a compression moulding technique is used, yet the skilled person should be aware of that other moulding techniques may be used.
  • the compression step may e.g. be removed.
  • the neck and cap assembly described above is further provided with a membrane sealing the spout of the neck, whereby the cap is provided with internal cutting elements for cutting off the membrane when the cap is removed from the neck for the first time.
  • the provision of the guiding elements and the corresponding guides allows a quick break of the yielding bridges for releasing the tamper ring; hence the cutting elements may be designed such that the membrane is never cut off before breaking of the yielding bridges.

Landscapes

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

Abstract

L'invention concerne un col conçu pour un emballage alimentaire. Ledit col comprend une paroi tubulaire (204) s'étendant d'une première partie cylindrique (206) à une seconde partie cylindrique (208), ladite première partie (206) est destinée à être fixée à un corps d'emballage (102) et ladite seconde partie (208) définit un bec verseur (210), ladite seconde partie (208) comprend des filetages (212) placés sur la périphérie extérieure de ladite seconde partie (208) pour venir en prise avec des filetages internes () d'un bouchon (), et ladite première partie (206) comprend plusieurs éléments de guidage (214) placés sur la périphérie extérieure de ladite première partie (206) de façon à venir en prise avec les guides internes () d'une bague inviolable (), chacun desdits éléments de guidage (214) comprend une trajectoire de guidage incurvée (216.)
EP12797786.6A 2011-11-18 2012-11-16 Col, bouchon, et emballage alimentaire comprenant un tel col et un tel bouchon Withdrawn EP2780242A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1151099 2011-11-18
PCT/EP2012/072866 WO2013072474A1 (fr) 2011-11-18 2012-11-16 Col, bouchon, et emballage alimentaire comprenant un tel col et un tel bouchon

Publications (1)

Publication Number Publication Date
EP2780242A1 true EP2780242A1 (fr) 2014-09-24

Family

ID=47297160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12797786.6A Withdrawn EP2780242A1 (fr) 2011-11-18 2012-11-16 Col, bouchon, et emballage alimentaire comprenant un tel col et un tel bouchon

Country Status (2)

Country Link
EP (1) EP2780242A1 (fr)
WO (1) WO2013072474A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3096968B1 (fr) * 2019-06-07 2021-07-23 Albea Services Ensemble pour la fermeture d’un tube et tube comprenant cet ensemble

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5137163A (en) 1991-10-04 1992-08-11 Phoenix Closures, Inc. Tamper evident closure with ramped contact
JPH07101457A (ja) * 1993-09-30 1995-04-18 Kishimoto Akira 開封されていないことを保証する広口容器用スクリューキャップ
US5487481A (en) 1994-10-31 1996-01-30 Sander; Dieter Tamper evident plastic closure
US20040026288A1 (en) * 2002-08-12 2004-02-12 Bruno Zumbuhl Threaded closure with tamper indicating ring
US7451885B2 (en) * 2005-01-31 2008-11-18 Alcan Packaging Pharmaceutical and Personal Care, Inc. Low application torque, tamper evident plastic closure and container system with enhanced visual tamper evidency
GB2444048B (en) * 2006-11-21 2008-11-12 Bapco Closures Res Ltd Assembly of containers made of plastics and laminate material components
WO2008095863A1 (fr) * 2007-02-08 2008-08-14 Obrist Closures Switzerland Gmbh Fermeture inviolable, contenant destiné à recevoir ladite fermeture et ensemble formé par leur combinaison
SE532765C2 (sv) 2008-06-19 2010-04-06 Tetra Laval Holdings & Finance Metod och anordning för formsprutning vid tillverkning av förpackningsbehållare
JP4560127B1 (ja) * 2009-06-25 2010-10-13 有己 古野 樹脂製ボトルキャップのエンドリング除去構造並びにこれを具えた容器

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2013072474A1 *

Also Published As

Publication number Publication date
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