EP0460557B1 - Fermeture à vis avec bande de garantie - Google Patents

Fermeture à vis avec bande de garantie Download PDF

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Publication number
EP0460557B1
EP0460557B1 EP91108998A EP91108998A EP0460557B1 EP 0460557 B1 EP0460557 B1 EP 0460557B1 EP 91108998 A EP91108998 A EP 91108998A EP 91108998 A EP91108998 A EP 91108998A EP 0460557 B1 EP0460557 B1 EP 0460557B1
Authority
EP
European Patent Office
Prior art keywords
cap
screw cap
cap according
guarantee strip
fixedly connected
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
EP91108998A
Other languages
German (de)
English (en)
Other versions
EP0460557A3 (fr
EP0460557A2 (fr
Inventor
Werner R.F. Stibal
Franz Thomas Bartl
Hans-Werner Breuer
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.)
Crown Cork AG
Original Assignee
Crown Cork AG
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 Crown Cork AG filed Critical Crown Cork AG
Priority to AT91108998T priority Critical patent/ATE96110T1/de
Publication of EP0460557A2 publication Critical patent/EP0460557A2/fr
Publication of EP0460557A3 publication Critical patent/EP0460557A3/fr
Application granted granted Critical
Publication of EP0460557B1 publication Critical patent/EP0460557B1/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
    • 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
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • 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
    • B65D2401/00—Tamper-indicating means
    • B65D2401/15—Tearable part of the closure
    • B65D2401/30—Tamper-ring remaining connected to closure after initial removal
    • 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
    • B65D2401/00—Tamper-indicating means
    • B65D2401/15—Tearable part of the closure
    • B65D2401/35—Vertical or axial lines of weakness

Definitions

  • the invention relates to a screw cap made of plastic material for closing a container mouth according to the preamble of claim 1.
  • Such screw caps have a guarantee function in that a first removal of the cap is indicated by tearing off the guarantee band.
  • Screw caps with mechanically locking guarantee bands have been known and used for a long time.
  • a problem with the known caps is, in particular, that the guarantee band is designed in such a way that it tears at the right place when it is opened for the first time, but that it does not interfere with the closing process when the container mouth is subsequently closed again. In the case of reusable containers, it is undesirable for the guarantee band to remain at the bottle mouth, so that the guarantee band must tear open in the circumferential direction and remain firmly connected to the lower edge of the cap at least at one point. Screw caps of the same type are known, for example, from EP-A-154 603 or EP-A-281 514.
  • the predetermined breaking point must be designed so that it does not tear or become damaged when the cap is screwed on for the first time. On the other hand, the predetermined breaking point must not cause excessive circumferential elasticity, so that the cap can be unscrewed without tearing off the band.
  • the tear-off resistance between the cap and the band is increased to a fraction of the circumference and the band is weakened by an oblique predetermined tear line in the form of a notch.
  • An annular rib which extends over the entire section that is not connected or can only be torn off, serves as a retaining means.
  • the target tear line extends practically over the entire area of the section with increased tear resistance.
  • a container closure with a guarantee ring has become known from US Pat. No. 4,278,180, an approximately V-shaped recess being arranged in the guarantee ring next to a predetermined breaking point. This recess is intended to make it easier to screw on the closure cap, although the guarantee ring does not have to snap over a container bead.
  • the guarantee ring is braked by a locking device that acts in the circumferential direction.
  • the material recess absorbs material expansion when it is screwed on for the first time and thus relieves the predetermined breaking point. Nevertheless, the cap cannot be unscrewed without tearing the predetermined breaking point.
  • the material recess can e.g. be designed as a vertical slot, which extends over part of the guarantee band. Instead of a slot, however, only one notch could also be arranged in the guarantee band.
  • the guarantee band can be integrally and firmly connected to the lower edge of the cap over a relatively large circumferential section, this section only having a support and retention function and allowing the cap to be placed symmetrically on the bottle, but does not actually perform a guarantee function.
  • the guarantee function is exercised by the complementary section, which is not or only tearably connected to the lower edge of the cap. This section can be made relatively short, so that when the container mouth is subsequently closed again, there is no danger that the torn guarantee band will be pushed between the threads.
  • the guarantee band is continuously formed over its entire circumference, whereby the necessary circumferential tension is achieved when opening for the first time. This ensures that the predetermined breaking point tears on the guarantee tape.
  • the firmly connected section of the guarantee band extends particularly advantageously over an angle of more than 90 ° and less than 270 °, preferably from 120 ° to 260 °.
  • the complementary section of the guarantee tape which is not firmly connected to the cap, can be connected to the lower edge of the cap via tear-off webs. However, two webs can be sufficient to hold the complementary section in place.
  • the retaining elements are preferably arranged on the separately designed complementary section of the guarantee band, but can also extend at least partially over the firmly connected section.
  • the retaining elements can be designed as deformable tongues, e.g. according to the applicant's EP-A-281 514.
  • the retaining elements can also be designed as individual beads, as shown in US-A-4,305,516 or in US-A-4,744,479. It would even be conceivable for the only retaining element to be a circumferential or almost circumferential inner bead on the guarantee band.
  • At least one inwardly directed support lug is arranged on the lower cap edge in the region of the detachable complementary section.
  • This support lug prevents the complementary section of the guarantee band, which is connected to the edge of the cap only by a few webs, from being pushed into the cap opening when it is first put on.
  • the upper edge of the guarantee band is rather supported on the nose, so that the tear-off bars are prevented from tearing when the cap is put on.
  • Figure 1 shows a screw cap 1 made of plastic material with an internal thread 5, which is intended to close a container mouth 2 with an external thread 6.
  • Such screw caps are preferably used for closing bottles with soft drinks, which are usually reusable glass bottles with a standardized bottle mouth.
  • the guarantee band 3 consists of a circumferential section 9 which is firmly connected to the lower edge of the cap and of a complementary section 10 which can be torn off or not firmly connected 2 and when unscrewing the cap for the first time, cause the necessary tensile force to tear the guarantee tape.
  • the cross section of the screw cap can be seen from FIGS. 2 to 4.
  • the screw cap 1 itself can have an orifice seal 16 on its cap base or else another sealing system such as, for example, an inserted sealing washer.
  • the cross-sectional shape of the screw cap and the guarantee band is selected such that it is manufactured in one axially opening injection mold is possible.
  • FIG. 5 shows the length of the peripheral section 9 firmly connected to the lower edge 15. In the exemplary embodiment, this extends over an angle alpha of approximately 240 °.
  • This section as can be seen from FIG. 2 on the right side, is connected to the lower edge 15 practically in its entire wall thickness and therefore cannot be torn off.
  • the complementary section 10 which is not firmly connected to the lower edge of the cap, accordingly extends over an angle Beta of approximately 120 °.
  • the cross-sectional shape of the guarantee band in this section can be seen from FIG. 2, left side.
  • the guarantee band is approximately wedge-shaped at the top and connected to the lower edge of the cap at only two tear-off webs 12 and 12 '.
  • Inwardly directed tongues 7 serve as retaining elements, under each of which a support bead 8 is arranged.
  • the tongues 7 are bent upwards and thus slide over the bead 4 at the bottle mouth. Bending of the tongues 7 downward is prevented by the support beads 8, so that the retaining elements once engaged under the bead 4 can no longer be pushed over the bead without tearing the guarantee band 3.
  • a predetermined breaking point 11 is arranged on the guarantee band.
  • this consists of a horizontal web 17 which connects the fixed section 9 and the loose complementary section 10 to one another.
  • a material recess 13 in the form of a slot is provided directly next to the section 9. This slot extends only about half of the guarantee bandwidth, so that there is no complete interruption of the guarantee band. Instead of the slot, it would also be possible to arrange only one notch with which the wall thickness of the guarantee tape is greatly reduced. The material recess 13 relieves the predetermined breaking point 11 without significantly reducing the disproportionately large expansion forces when unscrewing for the first time.
  • FIG. 3 also shows the support lug 14, which is arranged on the inside of the cap in the region of the loose complementary section 10.
  • This support nose which is inclined slightly obliquely downward, prevents the loose complementary section 10 from being able to slide into the cap opening when the cap is screwed on for the first time.
  • the tear-off webs 12 and 12 ' are relieved.
  • FIG. 3 shows the arrangement of the retaining elements 7, which extend over an angle delta of approximately 180 °.
  • Three of the retaining elements lie on the loose complementary section 10, while two of the retaining elements 7 'are already arranged on the fixed peripheral section 9.
  • the first of the retaining elements lies approximately diametrically opposite the predetermined breaking point 11.
  • the two tear-off webs 12 and 12 ' lie within an angle gamma of less than 90 °, starting from the predetermined breaking point 11.
  • the number of retaining elements 7, the tear-off webs 12 and the angles of the individual sections can obviously be adapted to the particular circumstances. In certain cases it would also be conceivable to provide more than one predetermined breaking point 11 on the guarantee band.
  • the cross-sectional shape of the guarantee band can also be adapted to the individual case.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Cartons (AREA)
  • Package Frames And Binding Bands (AREA)
  • Wrappers (AREA)

Claims (13)

  1. Couvercle à vis (1) en matière plastique pour la fermeture d'un goulot de récipient (2), comportant une bande de garantie circulaire (3) qui est disposée sur le bord inférieur (15) du couvercle et est reliée d'une seule pièce à ce dernier, et qui est destinée, lorsque le couvercle est posé, à venir en prise sous un bourrelet annulaire (4) prévu sur le goulot (2) du récipient, et comporte à cet effet, sur le côté intérieur, un moyen de retenue (7) apte à glisser sur le bourrelet, lors du premier vissage du couvercle, et s'enclenchant sous le bourrelet (4), en position définitive du couvercle, étant précisé que la bande de garantie présente une section périphérique (9) qui est reliée, résistante au déchirement, au couvercle, et une section complémentaire (10) qui est reliée, apte à se déchirer, au couvercle, que la bande de garantie est divisée par un point destiné à la rupture destiné à se déchirer dans le sens périphérique lors du premier dévissage du couvercle, lequel point destiné à la rupture s'étend verticalement, et que les extrémités voisines des deux sections (9, 10) sont reliées entre elles, dans le sens périphérique, d'un côté de manière résistante au déchirement et de l'autre côté par le point destiné à la rupture (11), caractérisé en ce que, en plus du point destiné à la rupture (11), sur la section périphérique fixe (9), un évidement de matière (13) destiné à augmenter l'extensibilité lors de la première pose du couvercle est prévu sur la bande de garantie.
  2. Couvercle à vis selon la revendication 1, caractérisé en ce que l'évidement de matière (13) est conçu comme une fente sensiblement verticale qui s'étend sur une partie de la bande de garantie.
  3. Couvercle à vis selon la revendication 1, caractérisé en ce que l'évidement de matière est conçu comme une encoche qui réduit l'épaisseur de paroi de la bande de garantie.
  4. Couvercle à vis selon l'une des revendications 1 à 3, caractérisé en ce que la section périphérique fixe (9) s'étend sur un angle supérieur à 90° et inférieur à 270°.
  5. Couvercle à vis selon l'une des revendications 1 à 4, caractérisé en ce que le point destiné à la rupture (11) comporte une patte (17) apte à se déchirer.
  6. Couvercle à vis selon la revendication 4, caractérisé en ce que la section complémentaire (10) de la bande de garantie (3) qui n'est pas solidaire du couvercle est reliée au bord inférieur (15) du couvercle par des pattes (12) aptes à se déchirer.
  7. Couvercle à vis selon la revendication 6, caractérisé en ce que la section fixe de la bande de garantie s'étend sur un angle (α) de 120° à 260°, et en ce qu'il est prévu, sur la section complémentaire (10), à l'intérieur d'un angle (8) inférieur à 90° faisant suite au point destiné à la rupture (11), deux pattes de déchirement (12, 12').
  8. Couvercle à vis selon la revendication 4, caractérisé en ce que le moyen de retenue comporte plusieurs éléments de retenue individuels (7), une partie au moins de ces éléments de retenue (7) s'étendant sur la section fixe (9).
  9. Couvercle à vis selon la revendication 8, caractérisé en ce que les éléments de retenue sont des languettes déformables (7).
  10. Couvercle à vis selon la revendication 8, caractérisé en ce que les éléments de retenue sont des bourrelets individuels.
  11. Couvercle à vis selon la revendication 9 ou 10, caractérisé en ce que les éléments de retenue (7) sont disposés sur la section complémentaire détachable (10) et éventuellement sur la section fixe (9) de la bande de garantie (3), à l'intérieur d'une section de 180° faisant suite au point destiné à la rupture (11).
  12. Couvercle à vis selon les revendications 7 et 11, caractérisé en ce qu'il est prévu au total cinq éléments de retenue (7), trois sur la section complémentaire détachable (10) et deux sur la section fixe (9).
  13. Couvercle à vis selon l'une des revendications 1 à 12, caractérisé en ce que la bande de garantie, au niveau de sa section périphérique fixe (9), est reliée au bord inférieur du couvercle sur toute son épaisseur de paroi.
EP91108998A 1988-11-28 1989-11-20 Fermeture à vis avec bande de garantie Expired - Lifetime EP0460557B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91108998T ATE96110T1 (de) 1988-11-28 1989-11-20 Schraubkappe mit garantieband.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH441188 1988-11-28
CH4411/88 1988-11-28

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP89810883A Division EP0371920B1 (fr) 1988-11-28 1989-11-20 Fermeture à vis avec bande de garantie
EP89810883.2 Division 1989-11-20

Publications (3)

Publication Number Publication Date
EP0460557A2 EP0460557A2 (fr) 1991-12-11
EP0460557A3 EP0460557A3 (fr) 1991-12-18
EP0460557B1 true EP0460557B1 (fr) 1993-10-20

Family

ID=4275637

Family Applications (2)

Application Number Title Priority Date Filing Date
EP91108998A Expired - Lifetime EP0460557B1 (fr) 1988-11-28 1989-11-20 Fermeture à vis avec bande de garantie
EP89810883A Expired - Lifetime EP0371920B1 (fr) 1988-11-28 1989-11-20 Fermeture à vis avec bande de garantie

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP89810883A Expired - Lifetime EP0371920B1 (fr) 1988-11-28 1989-11-20 Fermeture à vis avec bande de garantie

Country Status (4)

Country Link
EP (2) EP0460557B1 (fr)
AT (2) ATE96110T1 (fr)
DE (2) DE58904871D1 (fr)
ES (2) ES2045988T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0965533A1 (fr) 1998-06-18 1999-12-22 Mouldtec Kunststoff GmbH Bouchon de fermeture, en particulier bouchon fileté en plastique avec une bande de garantie
US6527132B1 (en) 1997-07-14 2003-03-04 Closures And Packaging Services Limited Closure with extended seal member
US7077278B2 (en) 2001-06-18 2006-07-18 Bericap Holding Gmbh Screw cap comprising a tamper-evident band

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4201997C1 (fr) * 1992-01-25 1992-12-10 Stella Kunststofftechnik Gmbh, 6228 Eltville, De
DE4217539C2 (de) * 1992-05-27 1995-01-05 Frank Schellenbach Verschlußkappe
DE4221004A1 (de) * 1992-06-26 1994-01-05 Mouldtec Pvg Ag Meilen Verschlußkappe für Getränkeflaschen
EG21314A (en) * 1992-07-16 2000-10-31 Driutt Rodney Malcolm Tamper evident closure
HU216148B (hu) * 1995-07-21 1999-04-28 Nord Est Developpement Műanyag zárókupak garanciagyűrűvel és tömítőelemekkel, zárókupakból és edényből álló egység, valamint eljárás a zárókupak előállítására
FR2744988B1 (fr) * 1996-02-21 1998-04-10 Nord Est Dev Bouchon en matiere plastique comportant une bague d'inviolabilite, ensemble bouchon/recipient, procede de fabrication d'un tel bouchon et procede de realisation d'un tel ensemble bouchon/recipient
DE19730324A1 (de) * 1997-07-15 1999-01-28 Mouldtec Kunststoff Gmbh Schraubkappe mit Garantieband
IT1300020B1 (it) 1998-05-08 2000-04-04 Sacmi Capsula a vite in materiale plastico con anello di garanzia.
FR2813288B1 (fr) * 2000-08-23 2003-02-21 Rical Sa Systeme d'inviolabilite pour un bouchon comportant des moyens de blocage de la deformation radiale de la bague d'inviolabilite lors du montage
JP5007893B1 (ja) * 2011-06-08 2012-08-22 村山 哲夫 ピルファープルーフキャップ
USD747201S1 (en) 2013-09-18 2016-01-12 Bericap Closure
FR3015442B1 (fr) 2013-12-24 2016-02-05 Bericap Dispositif de bouchage articule avec indicateur de premiere ouverture
USD833278S1 (en) 2014-09-03 2018-11-13 Bericap Closure for a container
CN212402082U (zh) * 2020-01-08 2021-01-26 四川省宜宾普什模具有限公司 防伪拉环翻盖

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Publication number Priority date Publication date Assignee Title
DE2439414A1 (de) * 1974-08-16 1976-03-04 Hohenzollern Huettenverwalt Kunststoffverschluss fuer flaschen und behaelter
FR2457813A1 (fr) * 1979-05-31 1980-12-26 Grussen Jean Capsule a vis en matiere plastique pour bouteilles
US4278180A (en) * 1980-01-24 1981-07-14 Aluminum Company Of America Container closure with breakable annular ring
US4550843A (en) * 1982-12-14 1985-11-05 Maxcap, Inc. Bottle caps
GR850153B (fr) * 1984-02-06 1985-03-29 Obrist Ag Crown
DE3531508A1 (de) * 1985-09-04 1987-03-12 Saier E Kunststoffwerk Gmbh Schraubverschlusskappe, insbesondere aus kunststoff, fuer flaschen, becher od. dgl.
US4744480A (en) * 1985-12-19 1988-05-17 The West Company Tamper-evident container-closure
EP0254673B1 (fr) * 1986-07-11 1990-04-18 Interplastic AG Couvercle de récipient muni d'une bague de garantie
CH672109A5 (fr) * 1987-01-30 1989-10-31 Wiedmer Plastikform W
CH671205A5 (fr) * 1987-02-26 1989-08-15 Crown Cork Ag

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6527132B1 (en) 1997-07-14 2003-03-04 Closures And Packaging Services Limited Closure with extended seal member
EP0965533A1 (fr) 1998-06-18 1999-12-22 Mouldtec Kunststoff GmbH Bouchon de fermeture, en particulier bouchon fileté en plastique avec une bande de garantie
US7077278B2 (en) 2001-06-18 2006-07-18 Bericap Holding Gmbh Screw cap comprising a tamper-evident band

Also Published As

Publication number Publication date
EP0460557A3 (fr) 1991-12-18
DE58905985D1 (de) 1993-11-25
EP0371920B1 (fr) 1993-07-07
ES2045988T3 (es) 1994-01-16
DE58904871D1 (de) 1993-08-12
ATE96110T1 (de) 1993-11-15
ES2041441T3 (es) 1993-11-16
EP0460557A2 (fr) 1991-12-11
EP0371920A2 (fr) 1990-06-06
ATE91264T1 (de) 1993-07-15
EP0371920A3 (en) 1990-11-22

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