EP1205393A2 - Couvercle de boíte - Google Patents

Couvercle de boíte Download PDF

Info

Publication number
EP1205393A2
EP1205393A2 EP01121410A EP01121410A EP1205393A2 EP 1205393 A2 EP1205393 A2 EP 1205393A2 EP 01121410 A EP01121410 A EP 01121410A EP 01121410 A EP01121410 A EP 01121410A EP 1205393 A2 EP1205393 A2 EP 1205393A2
Authority
EP
European Patent Office
Prior art keywords
lid
membrane
cover
ring
ring flange
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.)
Granted
Application number
EP01121410A
Other languages
German (de)
English (en)
Other versions
EP1205393A3 (fr
EP1205393B1 (fr
Inventor
Rainer Dr. Sauer
Werner Erfgen
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.)
ThyssenKrupp Rasselstein GmbH
Original Assignee
Rasselstein GmbH
Rasselstein Hoesch GmbH
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 Rasselstein GmbH, Rasselstein Hoesch GmbH filed Critical Rasselstein GmbH
Publication of EP1205393A2 publication Critical patent/EP1205393A2/fr
Publication of EP1205393A3 publication Critical patent/EP1205393A3/fr
Application granted granted Critical
Publication of EP1205393B1 publication Critical patent/EP1205393B1/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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4011—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening completely by means of a tearing tab
    • 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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/08—Flexible adhesive strips adapted to seal filling or discharging apertures
    • 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
    • B65D2517/0001—Details
    • B65D2517/001—Action for opening container
    • B65D2517/0013—Action for opening container pull-out tear panel, e.g. by means of a tear-tab
    • 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
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/0059—General cross-sectional shape of container end panel
    • B65D2517/0061—U-shaped
    • 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
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/008—Materials of container end panel
    • B65D2517/0082—Coated or laminated metal
    • 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
    • B65D2517/504—Details of preformed openings
    • B65D2517/5043—Details of preformed openings provided with a flange
    • B65D2517/5051—Up-turned flange, i.e. extending away from container
    • B65D2517/5054—Up-turned flange, i.e. extending away from container rolled or folded back, e.g. to avoid sharp edges

Definitions

  • the invention relates to a can lid according to the preamble of claim 1, and one Can lid according to the preamble of claim 5.
  • the invention further relates to a Method for closing a can with a can lid according to the preamble of Claim 1.
  • Can lid according to the preamble of claim 1 or the preamble of claim 5 are from the prior art, for example German Offenlegungsschrift No. 196 20 448 A1.
  • Such can lids consist of a lid ring that through Deep drawing and punching out of a coated sheet metal blank, e.g. made of tinplate, chromed sheet or aluminum is made.
  • a coated sheet metal blank e.g. made of tinplate, chromed sheet or aluminum is made.
  • a External flanges are provided for later formation of a double fold and the inner edge of the Cover ring has an annular flange which encloses a cover opening.
  • the Ring flange can, for example, by a flattened curl of the inner edge of the Cover ring are formed.
  • the edge area becomes one Cover membrane for example by heat sealing or by gluing flat to the Attached inside the pioneering top of the ring flange.
  • the cover membrane closes the lid opening, which extends over the entire narrow one Cover ring encircled surface extends.
  • To open the can lid is on the A tear tab is attached to the top of the cover membrane. By pulling on this The pull tab can be used to loosen the fastening of the cover membrane to the ring flange thus the cover membrane can be pulled off the cover ring.
  • the sheet metal blank from which the cover ring and the Cover membrane are manufactured, coated on both sides. If the attachment of the Cover membrane on the ring flange of the cover ring by means of heat sealing is the Sheet blank coated on one side with a heat sealable coating and on the other side with a protective coating against corrosion.
  • the double-sided coated sheet metal blank is made according to that known from DE 196 20 448 Manufacturing process the cover membrane and the cover ring by punching and Forming formed from the sheet metal blank. End punching occurs during the punching process Cut surfaces on the outer circumference of the cover membrane and on the inner circumference and Outer circumference of the cover ring. These cut surfaces are not coated provided so that they are exposed to corrosion.
  • the can lids produced by the known method tend especially with long storage, for corrosion on the end faces of the Lid rings and the lid membrane.
  • the end face of the cover membrane has sharp edges, which when Pulling the cover membrane off the cover ring can lead to injuries.
  • the present invention is therefore based on the object of a can lid to provide the type mentioned at the outset, which in normal handling cannot cause injuries and is resistant to corrosion.
  • the invention is therefore also based on the object of a can lid at the beginning to create the type mentioned, which is even easier to open.
  • Figure 1 shows a first embodiment of a finished can lid, this Partial section shows the left edge area of the can lid.
  • the can lid can be in here Top view, not shown, have a round / square or oval shape.
  • the can lid consists of a cover ring 1 and a cover membrane 2.
  • the cross section of FIG. 1 shown left region 13 of the cover ring 1 is used to form an outer flange and to form a double fold with which the cover ring can be attached to the can body.
  • the outer flange or the double fold formed therefrom is not shown in FIG. 1.
  • the Process steps for fastening the cover ring to the can body are, for example, in DE 196 20 448.
  • the cover ring 1 has an annular flange 4. This is formed by the inner edge area of the cover ring towards the outside of the can, that is to say in FIG above, rolled up and then flattened.
  • the ring flange 4 thus formed encloses a lid opening 5.
  • the edge region of the cover ring has its end face 6 radially outward.
  • the lid opening 5 is closed by a lid membrane 2.
  • the cover membrane 2 is for this purpose with its outer edge area on the top 8 pointing towards the outside of the can of the ring flange 4 attached.
  • the attachment can be by gluing, welding or Heat sealing done.
  • the outer edge 9 of the cover membrane 2 is folded over, so that the End face 3 of the cover membrane shows radially inward.
  • the cover membrane 2 is attached to the ring flange 4 of the cover ring 2 in such a way that the folded edge region 9 radially encloses the ring flange 4. Furthermore, the folded edge region 9 is down pressed in so that the end face 3 of the cover membrane on the end face 6 of the Ring flange 4 abuts.
  • the Lid ring attached in a known manner by forming a double fold on the can body.
  • the can is then filled with the contents and the lid opening through the Cover membrane closed.
  • the can can also be closed by First the cover membrane is attached to the cover ring and then the cover ring is attached to the can body in a known manner.
  • the process of making a Can lid according to claim 9 includes both alternatives in terms of the order of Steps to close the can.
  • Cover ring 1 and cover membrane 2 are preferred by punching out and reshaping formed on both sides organically coated sheet metal blank.
  • a sheet metal blank deep-drawn. During deep drawing, one of formed a flat bowl surrounded by an outer flange, which is a bottom part and essentially has a vertical wall part. The outer flange is used to form a Double fold for later attachment of the cover ring to the can body. Then will essentially the whole floor part in the immediate vicinity of its transition to the wall part punched out, to form the cover ring, the inner resulting from punching out Cut surface surrounds the lid opening 5. Then the wall part is partially outwards bent to form a curl.
  • the lid membrane 2 is placed on the ring flange 4 the folded edge region 9 placed on the ring flange 4 pointing so that the folded edge region 9 encloses the ring flange 4. Then the Cover membrane 2 attached to the top 8 of the ring flange 4. Before or during the Fastening process is the folded edge region 9 of the cover membrane 2 so pressed that the end face 3 of the cover membrane on the end face 6 of the ring flange abuts.
  • the cover membrane 2 is attached to the top 8 of the ring flange 4 advantageously over the entire top surface of the ring flange 4. Preferably takes place fastening by heat sealing.
  • the orientation is chosen so that the heat-sealable coating 7th comes to rest on the top 8 of the ring flange 4.
  • The is accordingly Cover membrane 2 oriented so that the heat-sealable coating towards the inside of the can points, so down in Figure 1.
  • the heat sealable coating 7 When heat sealing, the heat sealable coating 7 is exposed to heat and Pressure is viscous and can be in the narrow space between the end faces 3, 6 of the ring flange and the cover membrane.
  • Cover membrane 2 By applying slight pressure from above an appropriate tool is the one in the heat sealing process Cover membrane 2 pressed onto the top 8 of the ring flange 4 and on the other hand also the folded edge region 9 of the cover membrane 2 downwards and radially inwards pressed. This indentation causes the end face 3 of the cover membrane 2 pressed against the end face 6 of the ring flange 4.
  • the first uncoated end faces 3, 6 of the cover membrane and the ring flange butt pressed together and at least provided with a heat-sealable coating on the top. This protects the end faces 3, 6 against corrosion because neither moisture nor Atmospheric oxygen can come to the originally unsealed end faces.
  • the can lid is preferably at one point of the folded edge region 9 the lid membrane 2 on the top 14 pointing towards the outside of the can Pull tab 10 attached.
  • the pull tab 10 is preferably attached by Laser welding.
  • the tear tab 10 can, however, also by soldering or gluing to the Lid membrane 2 are attached.
  • manual pull on this tear tab 10 is First the folded edge region 9 of the cover membrane 2 is lifted off the cover ring 1 and then the area of the cover membrane 2 attached to the ring flange 4 is removed.
  • the cover membrane 2 thus removed has no sharp edges along its circumference more because the edge area 9 is folded over. Therefore, the removed cover membrane 2 do not lead to cuts.
  • the can lid formed in this way has the further advantage that it is due to the mutual contact of the end faces 3, 6 of the cover membrane and the ring flange End faces before contact with humidity and oxygen and thus against corrosion protects.
  • FIG. 2 A further embodiment of the can lid according to FIG. 2 is shown below described. So far the features of the object according to Figure 2 in the can lid of Figure 2 are present, identical reference numerals are used and to the previous one Description of the embodiment shown in Figure 1.
  • the embodiment of a can lid according to FIG. 2 has a lid ring 1 and one Cover membrane 2 on.
  • the cover membrane 2 is curled on its outer edge 11 bent.
  • the curl 11 is, as shown in Figure 2, essentially in cross section annular.
  • the edge area of the cover membrane is rolled so far that the End face 3 rests on the underside 8 of the cover membrane 2.
  • the bottom 8 of the Cover membrane 2 is either provided with a heat-sealable coating 7 or painted. Through the contact of the end face 3 with the coating 7 or the paint the end face 3 is protected against moisture and oxygen and thus against corrosion.
  • the bottom 8 of the lid membrane 2 pointing towards the inside of the can is in her Edge area attached to the top 8 of the ring flange.
  • the attachment is as in Embodiment according to Figure 1 again by thermal sealing the heat-sealable coatings on the top 8 of the ring flange 4 and the bottom the cover membrane 2.
  • a tear tab 10 attached in the area of the curl 11 is on its top, that is, the side facing away from the ring flange 4 Side.
  • the tear tab 10 is attached by means of Laser welding on the weld seam 12.
  • the welding point 12 is as close as possible to the Edge of the flanged curl 11. This ensures that the leverage at Pulling on the tear tab 10 in the longitudinal direction A of the tab is as large as possible. Through the strong leverage are only for pulling the cover membrane 2 from the ring flange 4 low forces necessary.
  • the curl 11 proves on the one hand because of the lower risk of injury and on the other hand, because of the improved fastening of the tear tab 10 to the cover membrane 2 as advantageous.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
EP01121410A 2000-11-09 2001-09-07 Couvercle de boíte et sa méthode de fabrication Expired - Lifetime EP1205393B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10055527A DE10055527C2 (de) 2000-11-09 2000-11-09 Dosendeckel
DE10055527 2000-11-09

Publications (3)

Publication Number Publication Date
EP1205393A2 true EP1205393A2 (fr) 2002-05-15
EP1205393A3 EP1205393A3 (fr) 2003-12-03
EP1205393B1 EP1205393B1 (fr) 2005-05-04

Family

ID=7662688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01121410A Expired - Lifetime EP1205393B1 (fr) 2000-11-09 2001-09-07 Couvercle de boíte et sa méthode de fabrication

Country Status (6)

Country Link
US (1) US6601727B2 (fr)
EP (1) EP1205393B1 (fr)
AT (1) ATE294745T1 (fr)
CA (1) CA2361443A1 (fr)
DE (2) DE10055527C2 (fr)
ES (1) ES2240294T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2184237A1 (fr) * 2008-11-10 2010-05-12 Crown Packaging Technology, Inc Fermeture pour conteneur et méthode pour sa fabrication
EP3279105A1 (fr) * 2016-08-02 2018-02-07 Amcor Flexibles Singen GmbH Bague de couvercle

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20215848U1 (de) * 2002-10-11 2004-02-26 Huber Verpackungen Gmbh + Co. Kg Dose für UV-härtende Druckfarben
DE20215847U1 (de) * 2002-10-11 2004-02-26 Huber Verpackungen Gmbh + Co. Kg Dose für UV-härtende Druckfarben
US7055713B2 (en) * 2002-11-12 2006-06-06 Sonoco Development, Inc. Easy-opening closure for retortable container
US20070164045A1 (en) * 2006-01-13 2007-07-19 Wydler Hans L Dual mode container
ATE480465T1 (de) * 2006-07-13 2010-09-15 Impress Metal Packaging Sa Behälterdeckel mit einer abziehbaren membrane
WO2009148988A2 (fr) * 2008-06-03 2009-12-10 Valspar Sourcing, Inc. Contenant à ouverture aisée et revêtement de contenant
PL2646328T3 (pl) * 2010-11-29 2017-07-31 Crown Packaging Technology, Inc. Zamknięcie

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19620448A1 (de) 1996-05-21 1997-11-27 Rasselstein Hoesch Gmbh Verfahren zur Herstellung eines leicht zu öffnenden Dosendeckels und leicht zu öffnender Dosendeckel

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US3765352A (en) * 1972-03-27 1973-10-16 Fraze Ermal C Combined can and end with means for protecting against severed score
CH572847A5 (fr) * 1973-12-17 1976-02-27 Rausing Anders Ruben
GB1536543A (en) * 1975-01-13 1978-12-20 Metal Box Co Ltd Containers
GB1577739A (en) * 1976-04-09 1980-10-29 Metal Box Co Ltd Containers
DE2933547A1 (de) * 1979-07-26 1981-03-12 Schweizerische Aluminium AG, 3965 Chippis Verfahren zur herstellung eines deckelringes und eines deckels.
US4445621A (en) * 1983-03-28 1984-05-01 Stoffel Technologies, Inc. Easy-open container wall
CH674829A5 (fr) 1987-12-14 1990-07-31 Alcan Rorschach Ag
DE19629148C2 (de) * 1996-07-19 2002-10-24 Mars Inc Verfahren zur Herstellung eines befüllten Behälters
DE29821514U1 (de) * 1998-12-02 2000-04-13 Rasselstein Hoesch Gmbh Leicht zu öffnender Dosendeckel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19620448A1 (de) 1996-05-21 1997-11-27 Rasselstein Hoesch Gmbh Verfahren zur Herstellung eines leicht zu öffnenden Dosendeckels und leicht zu öffnender Dosendeckel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2184237A1 (fr) * 2008-11-10 2010-05-12 Crown Packaging Technology, Inc Fermeture pour conteneur et méthode pour sa fabrication
WO2010052249A2 (fr) * 2008-11-10 2010-05-14 Crown Packaging Technology, Inc. Atténuation de la corrosion galvanique
WO2010052249A3 (fr) * 2008-11-10 2010-09-23 Crown Packaging Technology, Inc. Atténuation de la corrosion galvanique
EP3279105A1 (fr) * 2016-08-02 2018-02-07 Amcor Flexibles Singen GmbH Bague de couvercle
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
EP1205393A3 (fr) 2003-12-03
EP1205393B1 (fr) 2005-05-04
ATE294745T1 (de) 2005-05-15
DE10055527A1 (de) 2002-05-29
US6601727B2 (en) 2003-08-05
DE50106093D1 (de) 2005-06-09
CA2361443A1 (fr) 2002-05-09
DE10055527C2 (de) 2002-10-17
ES2240294T3 (es) 2005-10-16
US20020053571A1 (en) 2002-05-09

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