EP2019045A1 - Couvercle de boîte doté d'une bague de couvercle et membrane de fermeture pelable - Google Patents

Couvercle de boîte doté d'une bague de couvercle et membrane de fermeture pelable Download PDF

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Publication number
EP2019045A1
EP2019045A1 EP07405212A EP07405212A EP2019045A1 EP 2019045 A1 EP2019045 A1 EP 2019045A1 EP 07405212 A EP07405212 A EP 07405212A EP 07405212 A EP07405212 A EP 07405212A EP 2019045 A1 EP2019045 A1 EP 2019045A1
Authority
EP
European Patent Office
Prior art keywords
lid
tab
membrane
opening tab
folded
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Withdrawn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
EP07405212A
Other languages
German (de)
English (en)
Inventor
Sven Bauer
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 EP07405212A priority Critical patent/EP2019045A1/fr
Publication of EP2019045A1 publication Critical patent/EP2019045A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/50—Non-integral frangible members applied to, or inserted in, a preformed opening
    • B65D2517/5002—Details of flexible tape or foil-like material
    • B65D2517/5008—Details of flexible tape or foil-like material with a sealing coat
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/50—Non-integral frangible members applied to, or inserted in, a preformed opening
    • B65D2517/5002—Details of flexible tape or foil-like material
    • B65D2517/5013—Details of flexible tape or foil-like material the tape covering almost the whole of the container end panel
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/50—Non-integral frangible members applied to, or inserted in, a preformed opening
    • B65D2517/5002—Details of flexible tape or foil-like material
    • B65D2517/5024—Material
    • B65D2517/5032—Laminated

Definitions

  • the invention relates to a can lid with a lid ring with an annular sealing flange and sealed on the sealing flange and peelable from this closure membrane with a projecting from an edge of the closure membrane in a longitudinal direction opening tab, the closure membrane with the opening tab made in one piece from a metal foil with sealable coating is.
  • Peelable sealing membranes are equipped with a projecting from the peripheral edge of the closure membrane opening tab for gripping and peeling the membrane.
  • the opening tab is folded before or after sealing the sealing membrane on the lid ring from the crimping edge on the closure membrane and remains in predominantly consisting of a metal foil membrane material during subsequent operations in the further processing of the lid and when filling the cans with crimped lid in this position.
  • film laminates of a metal foil and one or more plastic films occurs with increasing Plastic content in the laminate an increasing deterioration of the deadfold properties of the membrane material, so that the opening tab without aids can not be completely transferred to the membrane and in many cases extends beyond the defined by the top of the hemming plane.
  • protruding opening tabs may buckle or even tear.
  • the invention has for its object to provide a can lid of the type mentioned, in which the opening tab has sufficient deadfold properties to during the further processing of the can lid, during transport of the cans with crimped cover to the filling and during the pressure test and sterilization Cans without further aids, such as gluing or sealing, to remain fixed in the folded on the closure membrane layer.
  • the opening tab is formed by one of the edge of the closure membrane projecting in the longitudinal direction and folded transversely to the longitudinal direction about a first folding axis to two superimposed parts tab strip, wherein the sealable coatings of the superimposed parts of the folded tab strip abut each other.
  • the two superimposed parts of the opening tab forming, folded tab strip are preferably connected by sealing or glued by means of an adhesive.
  • the opening tab is preferably folded over the closure membrane about a second folding axis transverse to the longitudinal direction, wherein the second folding axis lies within the region of the two superimposed parts of the folded tab strip forming the opening tab.
  • 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 provided with a plastic coating.
  • the metal foil of the closure membrane with the opening tab is preferably an aluminum foil.
  • a plastic backing sheet preferably oriented polyamide (oPA), oriented polyethylene terephthalate (oPET), oriented polypropylene (oPP) or a fiber reinforced plastic film.
  • the sealable coating is for example made of polypropylene (PP).
  • the can lid according to the invention is particularly suitable as a closure for cans with sterilizable contents by Aufbördein the can lid on a can body.
  • lid 10 has a cover ring 12 with a in a lid plane E annularly arranged sealing flange 14.
  • the outer edge of the sealing flange 14 merges into an annular wall 16.
  • the free end of the annular wall 16 is formed into an outer flange 18.
  • the distance between the cover plane E and the upper edge of the outer flange 18 is referred to as the core depth t.
  • the inner edge of the sealing flange 14 is rolled into a rolled edge 20 and defines a removal opening 22.
  • a closure membrane 22 closing the removal opening 22 is sealed.
  • the sealing membrane 24 rests on the sealing flange 14 and is connected thereto via an adhesive or sealing layer.
  • a material for the closure membrane 24 is for example a film laminate of an externally coated aluminum foil, on its inner or sealing side a support film of, for example oriented polyamide (oPA), oriented polyethylene terephthalate (oPET), oriented polypropylene (oPP) or a fiber-reinforced plastic film and on the support film has a heat-sealable coating of polypropylene (PP).
  • oPA oriented polyamide
  • OPET oriented polyethylene terephthalate
  • oPP oriented polypropylene
  • the adhesive force of the seal between the sealing membrane 24 and sealing flange 14 is so adjusted so that the sealing membrane from the sealing flange can be removed by peeling.
  • An opening tab 26 arranged on the edge of the closure membrane 24 serves to remove or peel the closure membrane 24 from the sealing flange 14 while releasing
  • the opening tab 26 has a special fold which gives the tab deadfold properties.
  • an approximately twice the length of the opening tab 26 corresponding tab strip 28 is folded approximately centrally and transversely to its longitudinal direction x about a first folding axis y 1 to the opening tab 26, that their outer surface on both sides of the lacquered aluminum foil is formed and within the opening tab 26 the heat-sealable coatings of the folded-over parts 30, 32 of the tab strip 28 abut each other ( Fig. 4 ).
  • the opening flap 26 forming, folded over parts of the tab strip 28 are preferably sealed against each other or glued by means of an adhesive. The folding of the tab strip 28 and the associated material doubling lead to a so-called Duplo composite with exceptionally good deadfold properties.
  • This second folding step usually takes place only after the sealing membrane 24 has been sealed onto the sealing flange 14 of the cover ring 12.
  • the second folding axis y 2 should be folded within the area of the two superimposed and preferably against each other are sealed or adhesively bonded by means of an adhesive parts of the tab strip 28, so that the curvature 40 about the second folding axis y 2, the superposed parts 30, 32 of the tab strip 28 completely detected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Packages (AREA)
EP07405212A 2007-07-23 2007-07-23 Couvercle de boîte doté d'une bague de couvercle et membrane de fermeture pelable Withdrawn EP2019045A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07405212A EP2019045A1 (fr) 2007-07-23 2007-07-23 Couvercle de boîte doté d'une bague de couvercle et membrane de fermeture pelable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07405212A EP2019045A1 (fr) 2007-07-23 2007-07-23 Couvercle de boîte doté d'une bague de couvercle et membrane de fermeture pelable

Publications (1)

Publication Number Publication Date
EP2019045A1 true EP2019045A1 (fr) 2009-01-28

Family

ID=38686658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07405212A Withdrawn EP2019045A1 (fr) 2007-07-23 2007-07-23 Couvercle de boîte doté d'une bague de couvercle et membrane de fermeture pelable

Country Status (1)

Country Link
EP (1) EP2019045A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016139341A1 (fr) * 2015-03-04 2016-09-09 Compagnie Générale De Conserve Boite de conserve a fond souple et procédé de fabrication correspondant
FR3040377A1 (fr) * 2015-08-26 2017-03-03 Cie Generale De Conserve Boite de conserve a fond souple, fond souple de boite et procede de fabrication correspondant
WO2019077004A1 (fr) * 2017-10-20 2019-04-25 Ardagh Mp Group Netherlands B.V. Couvercle pour boîte de conserve métallique, comprenant un anneau métallique et membrane pelable thermoscellée

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4544080A (en) * 1984-10-25 1985-10-01 General Can Company, Inc. Closure having reinforced pull tab
EP1386852A1 (fr) * 2002-07-26 2004-02-04 Crown Cork & Seal Technologies Corporation Structure pour couvercle
WO2006073777A1 (fr) * 2005-01-06 2006-07-13 Illinois Tool Works Inc. Element de scellement a tirette avec repartition de chaleur amelioree destine a un recipient

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4544080A (en) * 1984-10-25 1985-10-01 General Can Company, Inc. Closure having reinforced pull tab
EP1386852A1 (fr) * 2002-07-26 2004-02-04 Crown Cork & Seal Technologies Corporation Structure pour couvercle
WO2006073777A1 (fr) * 2005-01-06 2006-07-13 Illinois Tool Works Inc. Element de scellement a tirette avec repartition de chaleur amelioree destine a un recipient

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016139341A1 (fr) * 2015-03-04 2016-09-09 Compagnie Générale De Conserve Boite de conserve a fond souple et procédé de fabrication correspondant
EP3604155A1 (fr) * 2015-03-04 2020-02-05 Compagnie Générale De Conserve Boîte de conserve à fond souple et procédé de fabrication correspondant
US10583958B2 (en) 2015-03-04 2020-03-10 Compagnie Generale De Conserve Container for preserved food with a flexible bottom, and corresponding production method
FR3040377A1 (fr) * 2015-08-26 2017-03-03 Cie Generale De Conserve Boite de conserve a fond souple, fond souple de boite et procede de fabrication correspondant
WO2019077004A1 (fr) * 2017-10-20 2019-04-25 Ardagh Mp Group Netherlands B.V. Couvercle pour boîte de conserve métallique, comprenant un anneau métallique et membrane pelable thermoscellée
FR3072660A1 (fr) * 2017-10-20 2019-04-26 Ardagh Mp Group Netherlands B.V. Couvercle pour boite de conserve metallique, comprenant un anneau metallique et membrane pelable thermoscellee
CN111246950A (zh) * 2017-10-20 2020-06-05 荷兰三艺包装集团有限公司 包括金属环和可剥离的热封膜的用于金属罐的盖
US11478839B2 (en) 2017-10-20 2022-10-25 Trivium Packaging Group Netherlands B.V. Lid for a metal can, comprising a metal ring and a peelable, heat-sealed membrane
CN111246950B (zh) * 2017-10-20 2023-02-28 荷兰三艺包装集团有限公司 包括金属环和可剥离的热封膜的用于金属罐的盖

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