EP1777165A1 - Couvercle pour une boîte comportant une collerette et une membrane de fermeture - Google Patents

Couvercle pour une boîte comportant une collerette et une membrane de fermeture Download PDF

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Publication number
EP1777165A1
EP1777165A1 EP05405593A EP05405593A EP1777165A1 EP 1777165 A1 EP1777165 A1 EP 1777165A1 EP 05405593 A EP05405593 A EP 05405593A EP 05405593 A EP05405593 A EP 05405593A EP 1777165 A1 EP1777165 A1 EP 1777165A1
Authority
EP
European Patent Office
Prior art keywords
lid
sealing flange
closure membrane
cover
membrane
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Withdrawn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
EP05405593A
Other languages
German (de)
English (en)
Inventor
Sven Bauer
Christoph Dietrich
Reinhart Geisler
Andreas Ziegler
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
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 Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP05405593A priority Critical patent/EP1777165A1/fr
Priority to AT06806178T priority patent/ATE442996T1/de
Priority to DE502006004890T priority patent/DE502006004890D1/de
Priority to DK06806178.7T priority patent/DK1945522T3/da
Priority to ES06806178T priority patent/ES2333167T3/es
Priority to SI200630493T priority patent/SI1945522T1/sl
Priority to PL06806178T priority patent/PL1945522T3/pl
Priority to PCT/EP2006/009808 priority patent/WO2007045385A1/fr
Priority to EP06806178A priority patent/EP1945522B1/fr
Priority to PT06806178T priority patent/PT1945522E/pt
Publication of EP1777165A1 publication Critical patent/EP1777165A1/fr
Priority to CY20091101287T priority patent/CY1110072T1/el
Withdrawn legal-status Critical Current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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/50—Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
    • B65D17/501—Flexible tape or foil-like material
    • B65D17/502—Flexible tape or foil-like material applied to the external part of the container wall only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps

Definitions

  • the invention relates to a can lid having a cover ring with an annular sealing flange and sealed to the sealing flange and peelable from this closure membrane, the sealing flange with an inner edge defining a perpendicular to a cover ring axis, defining a lid plane opening cross-sectional area as a removal opening and an outer edge merges into an annular wall lying substantially perpendicular to the cover plane, whose free end is formed into an outer flare for connecting the cover to the opening edge of a can body.
  • a method suitable for the production of the can lid is also a method suitable for the production of the can lid.
  • a flat sheet metal part is first formed into a cylindrical tube.
  • the axially extending edges of the tube are pressed together and welded together, which is done by means of a laser beam and leads to the formation of a butt weld seam.
  • the tube is then in equal length pipe sections or cylindrical rings divided.
  • Each cylindrical ring is formed into a lid ring having a crimp rim for attachment to a can body and to an annular support surface for later attachment of the closure membrane.
  • the aforementioned method for producing a cover ring starting from a cylindrical ring has the advantage of a significantly reduced scrap fraction compared to the classic Deckelringhersteliung, in which initially formed a sheet metal disc and then punched out to form the cover ring removal opening.
  • lids with a cover ring with a sealing flange and arranged on this sealing membrane sealing flange and sealing membrane lie in a lying perpendicular to a cover ring axis cover level.
  • a major disadvantage of conventional cap rings with peelable sealing membrane is that cans can be sterilized with such l7osendeckeln only with controlled back pressure.
  • the field of application of conventional cover rings with peelable sealing membrane is thereby severely limited, in particular in the important market of cans for food.
  • the invention has for its object to provide a can lid of the type mentioned, which has over the known from the prior art can lids with peelable sealing membrane as a dose seal improved sterilizing and can be used in particular in cans that are not controlled in counter pressure autoclave , such as B. in tower or spiral autoclave, sterilized.
  • the sealing flange with the lid plane encloses an acute angle ⁇ and the sealing membrane is arched over the removal opening, wherein the curvature of the closure membrane through the removal opening is displaceable between two lying substantially mirror-symmetrically to the opening cross-sectional area end positions.
  • a tangent applied to the curved sealing membrane at the transition of the curvature into the sealing flange at the inner edge encloses an acute angle ⁇ in one of the end positions with the cover plane which is smaller than or equal to the angle ⁇ between sealing flange and cover plane.
  • the curvature of the closure membrane in both end positions is within a given by the height of the annular wall Kemtiefe.
  • the angle ⁇ between the sealing flange and the cover plane is preferably 10 ° to 60 °.
  • the angle ⁇ between the tangent to the curved sealing membrane at the transition of the curvature into the sealing flange at the inner edge and the cover plane is preferably 10 ° to 60 °.
  • the closure membrane is preferably a deformed by deep drawing, conveniently by peeling from the sealing flange detachable aluminum foil or aluminum / plastic composite film.
  • cover ring As a material for the cover ring are all known for can production metals such as aluminum, steel or tinplate. These metals can also be painted or reshaped with a plastic coating of, for example, polypropylene.
  • the can lid according to the invention is particularly suitable as a closure for cans with sterilizable contents.
  • a shown in Fig. 1 cover 10 ' according to the prior art with a rotationally symmetrical to a ring axis z lying cover ring 11' has a arranged in a perpendicular to the ring axis z standing cover plane E arranged annular sealing flange 12.
  • the outer edge of the sealing flange 12 merges into an annular wall 18 which is substantially concentric with the ring axis z.
  • the free end of the annular wall 18 is formed into an outer flange 20.
  • the distance between the cover plane E and outer flange 20 is referred to as Kemtiefe t.
  • the inner edge of the sealing flange 12 is rolled into a rolled edge 22 and defines a removal opening 24 with a circular opening cross-section area F.
  • a closure membrane 14 closing the removal opening 24 is sealed.
  • the closure membrane 14 is located on the sealing flange 12 and is with this over an adhesive or sealing layer connected.
  • the material used for the closure membrane 14 is, for example, an aluminum or sheet-steel foil optionally having a heat-sealable coating.
  • the seal between sealing membrane 14 and sealing flange 12 is adjusted so that the sealing membrane from the sealing flange by peeling (peeling) can be removed.
  • a tear-open tab 16 arranged on the edge of the closure membrane 14 serves to remove or peel the closure membrane 14 from the sealing flange 12, releasing the removal opening 24.
  • a lid ring 11 ' according to the prior art is first manufactured in a known manner and a closure membrane 14 is sealed onto the sealing rim 12 located in the lid plane E. Subsequently, as shown in FIG. 6, the cover ring 11 'with sealed seal membrane 14 is clamped in a first tool 40. With a second tool 42, the sealing flange 12 is set to the desired angled position. With a third tool 44, z. B. with a spherical punch made of Teflon, the closure membrane 14 is formed by deep drawing in the ring axis z to a curvature with a camber s. Instead of a mechanical deep drawing with a stamp, the deformation can also be done pneumatically or hydraulically.
  • the curvature height ⁇ s of the closure membrane 14 is dimensioned so that the closure membrane 14 lies completely in its end positions A and B within the high can edge predetermined by the large core depth t.
  • the problem of the upright tear tab occurring in lid rings with a low core depth is also solved. Due to the high edge of the can, the flap remains protected and can not get caught in filling lines and transport processes. This is especially important when using laminates with poor deadfold properties.
  • the deep-drawing step can be carried out in both directions, since the curved closure membrane 14 is displaceable between the end position A and the end position B lying essentially mirror-symmetrically with respect to the removal opening 24 within the inner space defined by the annular wall 18 or the high can edge resulting therefrom.
  • the deep-drawing step takes place in the end position A.
  • the deep-drawing step can also take place before the sealing flange 12 is set up in the angled position.
  • the volume of the contents increases as a result of the increased temperature.
  • the internal pressure increases by an amount + ⁇ P relative to the vapor pressure at the filling temperature.
  • the closure membrane 14 is pushed from the initial lower end position A through the discharge opening 24 into the upper end position B and is in this position under an increased relative to atmospheric pressure internal pressure.
  • a possible plastic deformation of the closure membrane 14 can be counteracted, for example, with a thicker membrane material, with support foils of, for example, oriented polyamide (oPA), oriented polyethylene terephthalate (oPET), oriented polypropylene (oPP) or with a fiber-reinforced plastic film.
  • oPA oriented polyamide
  • OPET oriented polyethylene terephthalate
  • oPP oriented polypropylene
  • the volume of the contents decreases as a result of the falling temperature.
  • the internal pressure as a result of the now reduced vapor pressure of the filling liquid at the sterilizing temperature decreases by an amount - ⁇ P compared with the vapor pressure at the filling temperature.
  • the closure membrane 14 is from the upper end position B pulled through the discharge opening into the lower end position A and is in this position under a relation to atmospheric pressure lowered internal pressure. In this case, the angle ⁇ between sealing flange 12 and cover level E can be reduced and holds the closing membrane 14 under tension and thus virtually without wrinkles due to the resulting restoring forces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Closing Of Containers (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Casings For Electric Apparatus (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP05405593A 2005-10-20 2005-10-20 Couvercle pour une boîte comportant une collerette et une membrane de fermeture Withdrawn EP1777165A1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP05405593A EP1777165A1 (fr) 2005-10-20 2005-10-20 Couvercle pour une boîte comportant une collerette et une membrane de fermeture
SI200630493T SI1945522T1 (sl) 2005-10-20 2006-10-11 Postopek za izdelavo pokrova doze z obročem pokrova in zaporno membrano
DE502006004890T DE502006004890D1 (de) 2005-10-20 2006-10-11 Verfahren zur herstellung eines dosendeckels mit deckelring und verschlussmembran
DK06806178.7T DK1945522T3 (da) 2005-10-20 2006-10-11 Fremgangsmåde til fremstilling af et dåselåg med en lågring og lukkemembran
ES06806178T ES2333167T3 (es) 2005-10-20 2006-10-11 Procedimiento para la fabricacion de una tapa de lata con anillo de tapa y membrana de cierre.
AT06806178T ATE442996T1 (de) 2005-10-20 2006-10-11 Verfahren zur herstellung eines dosendeckels mit deckelring und verschlussmembran
PL06806178T PL1945522T3 (pl) 2005-10-20 2006-10-11 Sposób wytwarzania pokrywy puszki z pierścieniem pokrywy i przeponą zamykającą
PCT/EP2006/009808 WO2007045385A1 (fr) 2005-10-20 2006-10-11 Procede de fabrication d'un couvercle de boite presentant une bague de couvercle et une membrane de fermeture
EP06806178A EP1945522B1 (fr) 2005-10-20 2006-10-11 Procede de fabrication d'un couvercle de boite presentant une bague de couvercle et une membrane de fermeture
PT06806178T PT1945522E (pt) 2005-10-20 2006-10-11 Processo para a produção de uma tampa de uma lata com anel de tampa e membrana de fecho
CY20091101287T CY1110072T1 (el) 2005-10-20 2009-12-09 Διεργασια για την παραγωγη καλυμματος κυτιου με δακτυλιο και μεμβρανη σφραγισης

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05405593A EP1777165A1 (fr) 2005-10-20 2005-10-20 Couvercle pour une boîte comportant une collerette et une membrane de fermeture

Publications (1)

Publication Number Publication Date
EP1777165A1 true EP1777165A1 (fr) 2007-04-25

Family

ID=35589390

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05405593A Withdrawn EP1777165A1 (fr) 2005-10-20 2005-10-20 Couvercle pour une boîte comportant une collerette et une membrane de fermeture
EP06806178A Active EP1945522B1 (fr) 2005-10-20 2006-10-11 Procede de fabrication d'un couvercle de boite presentant une bague de couvercle et une membrane de fermeture

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06806178A Active EP1945522B1 (fr) 2005-10-20 2006-10-11 Procede de fabrication d'un couvercle de boite presentant une bague de couvercle et une membrane de fermeture

Country Status (10)

Country Link
EP (2) EP1777165A1 (fr)
AT (1) ATE442996T1 (fr)
CY (1) CY1110072T1 (fr)
DE (1) DE502006004890D1 (fr)
DK (1) DK1945522T3 (fr)
ES (1) ES2333167T3 (fr)
PL (1) PL1945522T3 (fr)
PT (1) PT1945522E (fr)
SI (1) SI1945522T1 (fr)
WO (1) WO2007045385A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012072383A1 (fr) * 2010-11-29 2012-06-07 Crown Packaging Technology, Inc. Fermeture
CH705595A1 (de) * 2011-10-05 2013-04-15 Soudronic Ag Verfahren und Vorrichtung zur Herstellung von Aufreissdeckeln.
US9617056B2 (en) 2006-02-03 2017-04-11 Ardagh Mp Group Netherlands B.V. Expandable container having lid for providing headspace control in a food can
WO2018024376A1 (fr) * 2016-08-02 2018-02-08 Amcor Flexibles Singen Gmbh Joint de couvercle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2357561T3 (es) 2007-10-25 2011-04-27 Impress Group B.V. Procedimiento para preparar y formar una tapa, y tapa.
EP2055641A1 (fr) 2007-10-29 2009-05-06 Impress Metal Packaging S.A. Bague de couvercle pouvant fléchir et procédé permettant de former un couvercle
CH701451A2 (de) 2009-07-09 2011-01-14 Soudronic Ag Verfahren und Vorrichtung zur Herstellung von Aufreissdeckeln.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1153840A1 (fr) 2000-05-10 2001-11-14 Rasselstein Hoesch GmbH Procédé de fabrication d'un anneau en tôle pour un couvercle de boíte
WO2005005277A1 (fr) * 2003-07-01 2005-01-20 Crown Packaging Technology Inc Fermeture
DE10338445A1 (de) * 2003-08-19 2005-03-31 Impress Group B.V. Deckelring mit geneigtem Flachsteg

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020050493A1 (en) * 1999-02-10 2002-05-02 Ball Melville Douglas Can with peelably bonded closure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1153840A1 (fr) 2000-05-10 2001-11-14 Rasselstein Hoesch GmbH Procédé de fabrication d'un anneau en tôle pour un couvercle de boíte
WO2005005277A1 (fr) * 2003-07-01 2005-01-20 Crown Packaging Technology Inc Fermeture
DE10338445A1 (de) * 2003-08-19 2005-03-31 Impress Group B.V. Deckelring mit geneigtem Flachsteg

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9617056B2 (en) 2006-02-03 2017-04-11 Ardagh Mp Group Netherlands B.V. Expandable container having lid for providing headspace control in a food can
US10017313B2 (en) 2006-02-03 2018-07-10 Ardagh Mp Group Netherlands B.V. Expandable container having lid for providing headspace control in a food can
WO2012072383A1 (fr) * 2010-11-29 2012-06-07 Crown Packaging Technology, Inc. Fermeture
US9475620B2 (en) 2010-11-29 2016-10-25 Crown Packaging Technology, Inc. Closure
CH705595A1 (de) * 2011-10-05 2013-04-15 Soudronic Ag Verfahren und Vorrichtung zur Herstellung von Aufreissdeckeln.
WO2018024376A1 (fr) * 2016-08-02 2018-02-08 Amcor Flexibles Singen Gmbh Joint de couvercle
CN109789947A (zh) * 2016-08-02 2019-05-21 阿姆科挠性物品辛根有限责任公司 盖环

Also Published As

Publication number Publication date
DK1945522T3 (da) 2010-01-25
SI1945522T1 (sl) 2010-01-29
PL1945522T3 (pl) 2010-02-26
EP1945522B1 (fr) 2009-09-16
ATE442996T1 (de) 2009-10-15
WO2007045385A1 (fr) 2007-04-26
CY1110072T1 (el) 2015-01-14
DE502006004890D1 (de) 2009-10-29
PT1945522E (pt) 2009-12-11
EP1945522A1 (fr) 2008-07-23
ES2333167T3 (es) 2010-02-17

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