EP0408268B1 - Verfahren und Vorrichtung zur Herstellung eines Ringes für einen Behälterverschluss - Google Patents

Verfahren und Vorrichtung zur Herstellung eines Ringes für einen Behälterverschluss Download PDF

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Publication number
EP0408268B1
EP0408268B1 EP90307427A EP90307427A EP0408268B1 EP 0408268 B1 EP0408268 B1 EP 0408268B1 EP 90307427 A EP90307427 A EP 90307427A EP 90307427 A EP90307427 A EP 90307427A EP 0408268 B1 EP0408268 B1 EP 0408268B1
Authority
EP
European Patent Office
Prior art keywords
ring
annular
blank
cutting
punch
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.)
Revoked
Application number
EP90307427A
Other languages
English (en)
French (fr)
Other versions
EP0408268A2 (de
EP0408268A3 (en
Inventor
Keith Longstaff
John Stanley Simmons
Keith West
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 Packaging UK Ltd
Original Assignee
CarnaudMetalbox PLC
Metal Box PLC
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10659815&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0408268(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by CarnaudMetalbox PLC, Metal Box PLC filed Critical CarnaudMetalbox PLC
Priority to AT90307427T priority Critical patent/ATE100405T1/de
Publication of EP0408268A2 publication Critical patent/EP0408268A2/de
Publication of EP0408268A3 publication Critical patent/EP0408268A3/en
Application granted granted Critical
Publication of EP0408268B1 publication Critical patent/EP0408268B1/de
Anticipated expiration legal-status Critical
Revoked 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
    • 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
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/008—Materials of container end panel
    • B65D2517/0085—Foil-like, e.g. paper or cardboard
    • B65D2517/0086—Foil-like, e.g. paper or cardboard laminated
    • 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
    • B65D2517/5027—Single layer
    • B65D2517/5029—Single layer and connected to container by local areas of adhesive
    • 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
    • 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
    • B65D2517/5072—Details of hand grip, tear- or lift-tab
    • B65D2517/5083—Details of hand grip, tear- or lift-tab with means facilitating initial lifting of tape, e.g. lift or pull-tabs

Definitions

  • This invention relates to a method and apparatus for manufacturing a ring for a container closure, and more particularly to a ring for a closure of a kind comprising a ring portion adapted for attachment to a container body and having a diaphragm sealingly fixed to the ring to complete the closure.
  • Sandherr describes containers having closures comprising a ring and a diaphragm adhered to the ring by an adhesive that permits peeling of the diaphragm from the ring to give access to the contents of the container.
  • Sandherr provides a ring having a peripheral portion adapted for attachment to a container body, an annular plug portion extending from the peripheral portion to enter the container body, a flat annulus extending radially inwards from the plug portion and a frustoconical annulus depending from the interior of the flat annulus to terminate at the container body.
  • the diaphragm is peripherally adhered to the flat annulus and spans the ring to serve as a closure removable by a peeling action. Whilst the frustoconical annulus serves to guide powder products out of the container, its terminal edge is inside the container and therefore at risk of corrosion by any aggressive substance packed in the container.
  • Sandherr describes a ring having a peripheral portion, an annular plug, portion depending from the peripheral portion, a frustoconical annulus extending upwardly and inwardly from the annular plug portion and a flat annulus extending radially outwards from the frustoconical annulus.
  • the diaphragm is adhered to the flat annulus, the free edge of which is at risk of atmospheric corrosion.
  • British Patent No. 2022474B describes a process for making peripheral rings for the end of cans. These rings are cut from a lacquered sheet and formed with an inwardly extending portion whose inner part is turned back on itself away from the interior of the can to form an annular level flange overlying the outer part of the inwardly extending portion. A diaphragm with a tearback tab is bonded to this flange. In this case too, the cut edge of the ring is open to the atmosphere and this at risk from atmospheric corrosion.
  • EP-A-090957 on which the precharacterising portion of claim 1 is based describes a closure in which the cut edge is folded back against a step in an annular portion of the ring.
  • the folded back portion provides a bonding zone for the diaphragm, in addition to the bonding zone provided by the annular portion.
  • the cut edge is thus sealed from the atmosphere.
  • this document does not disclose a method of production for this closure.
  • a method of manufacturing a supporting ring comprising:- supporting sheet metal on an outer support of a lower die, said outer support providing a cutting edge; bringing a cooperating cutting edge into contact with the sheet metal to cut a blank from the metal and to hold the cut edge of the blank; forming a central aperture in the blank to provide a ring forming at the inner periphery of the ring an upstanding annular wall surrounded by a stepped annular ledge; and on completion of said formation, folding the upstanding annular wall so as to cause the free edge thereof to overlie the inner part of the stepped annular ledge; characterised in that the step of forming the cental aperture and the upstanding wall and stepped annular ledge are carried out by punching the central aperture in the blank while urging the periphery of the blank into contact with stamping surfaces of the lower die thereby to commerce formation of the stepped annular ledge so that it terminates at the inner side in an annular trough which terminates at the inner
  • This method which involves the step of punching a central aperture while commencing formation of the periphery of the blank, enables a ring to be made in a simple procedure requiring only two forming operations.
  • the central aperture is punched after wholly or partially forming the periphery of the blank
  • the central aperture is punched while the periphery is being formed which provides the central upstanding wall without the need for further steps.
  • metal can be drawn not only from the outer cut edge of the blank but also from the central cut edge. This reduces wastage of metal from the sheet from which the blank is cut.
  • a method of manufacturing a closure comprises the additional step of bonding a diaphragm to the ring at concentric bonding zones presented by the outer part of the stepped annular ledge and the portion of the upstanding annular wall which has been folded to overlie the inner part of the stepped annular ledge.
  • the diaphragm has a pull lug extending from its periphery and the bond at the bonding zones between the diaphragm and the ring permits removal of the diaphragm by a peeling action.
  • the diaphragm may be bonded to the ring by adhesive.
  • the diaphragm may be cut from a laminate of common metal and a polymeric film bonded by application of heat and pressure to the diaphragm to seal the diaphragm to the ring at the bonding zone.
  • the ring may be stamped from a laminate of common metal and a polymeric film, or prelacquered common metal, and the diaphragm is bonded to said film or lacquered surfaces at the bonding zones.
  • the diaphragm is cut from a laminate of aluminium and a polymeric film that will adhere to a receptive surface coating on a ring stamped from precoated tinplate or electrochrome coated steel (called TFS).
  • the invention provides in another aspect an apparatus for manufacturing a supporting ring for a container closure, the apparatus comprising circular upper and lower dies having two sets of cooperating cutting edges, the sets being spaced apart radially so as to cut an annular blank from sheet metal supported by the lower die, and between said sets of cutting edges a set of cooperating stamping surfaces for stamping the annular blank to form a stepped annular ledge terminating at its inner side in an upstanding annular wall and the lower die having a draw portion over which can be drawn the annular blank to form a peripheral formation.
  • a closure 1 comprises a ring 2 and a diaphragm 3 secured to the ring 2.
  • the ring 2 is stamped from a common sheet metal such as tin plate or electrochrome coated steel (called TFS in the trade), typically of about 0.26mm thickness, or aluminium alloy sheet.
  • TFS electrochrome coated steel
  • the ring surfaces to which the diaphragm is adhered are coated with a protective coating such as an epoxy phenolic lacquer or other polymeric film.
  • the diaphragm 3 has been cut from a thin sheet material such as an aluminium foil or laminate of aluminium foil/polymeric film or a laminate of polymeric films having suitable barrier properties.
  • a printed paper layer may be included in the laminates to permit presentation of useful indicia.
  • the rings may be made from prelacquered sheet metal or a laminate of sheet metal and a polymeric film.
  • Particularly suitable laminates are those manufactured by CMB Foodcan plc under the Trade Mark METPOLAM. The following combinations of materials are appropriate: PP is polypropylene; EVA is Ethylene vinylacetate; HDPE is high density polyethylene; PET is polyethylene terephthalate.
  • Figure 2 serves to show that the diaphragm 3 spans the ring 2 to which it is peripherally attached.
  • the diaphragm has a pull tab 4 joining the periphery of the diaphragm at a fold line 4a.
  • the pull tab is used to apply a peeling mode of force to remove the diaphragm 3 from the ring 2.
  • FIG. 3 shows the ring 2 and its connection with the diaphragm 3 in more detail.
  • the ring 2 comprises a peripheral formation adapted for engagement with a container body and including a flange 6, sometimes called a "cover hook", adapted for double seaming to a can body, an annular wall 7 depending from the inner periphery of the peripheral flange 6, and an annular flange portion extending radially inwards from the wall 7 to support the diaphragm 3.
  • the annular flange portion comprises a first flat annulus 8 extending inwards from the chuck wall 7 and providing an outer annular region, a second flat annulus 9 surrounded by the first flat annulus 8 to provide an inner annular region and offset from said first flat annulus 8 by a step portion 10, and an annular curl 11 extending inwardly from the inner periphery of the second flat annulus 9 to turn back on itself to define the mouth of the ring and thereafter terminating as a third flat annulus 12 which lies over the second flat annulus 9.
  • the diaphragm 3 is sealingly bonded by adhesive at an outer bond zone 5A to the upper surface of the first annulus 8 and by adhesive at an inner bond zone 5B to the upper surface of the third annulus 12 so that the free edge 112 of the third annulus 12 is totally enclosed from atmospheric or product attack.
  • step portion 10 holds the second annulus 12 at a distance, measured at the central axis of the ring, of about one metal thickness so that the top surfaces of the first annulus 8 and third annulus 12 are substantially flush. Therefore, no bending of the diaphragm material is required to achieve a seal with both annulii.
  • Various adhesives may be used at the bond zones 5A and 5B.
  • a maleic anhydride modified polypropylene adhesive may be used.
  • an adhesive such as polymers of acrylic resin could be used.
  • the outer bond zone 5A is typically 1mm wide and the inner bond zone 5B is typically 2mm wide but these dimensions are not critical relative to each other.
  • Figure 4 shows a second embodiment of the closure 13 in which a ring 14 has been stamped from a laminate of common sheet metal and a polymeric film on both major surfaces of the sheet metal.
  • a laminate comprising an outer layer 15 of polypropylene a middle layer 16 of electrochrome coated steel and an inner layer 17 of polypropylene may be used.
  • the diaphragm 3 could then be made of a laminate of polypropylene 18 and aluminium foil 19 which may be decorated or printed on the outside.
  • Heat sealing of the layer 18 of the diaphragm and to the layer 15 of the ring is achieved by supporting the ring in a lower tool 20 and applying a heated tool 21 to the top surface of the diaphragm.
  • the metal of the flat annulii 8, 9 and 12 is firmly supported to prevent any distortion of the diaphragm material.
  • Alternative laminates include for example metal sheet and a film of polybutylene or polyethylene terephthalate.
  • Figure 5 shows the closure 1 of Figures 1, 2 and 3 after attachment to a can body 22 by means of a double seam 23.
  • the second embodiment of the closure, denoted 13 in Figure 4 can also be attached to a can body in like manner.
  • the closure may be modified by provision of a modified peripheral flange to permit attachment to a container body 25, having a fibrous wall 27 made of spirally wound paperboard.
  • Figure 6 shows such a modified closure 24 having a peripheral flange 26 crimped onto the fibrous wall 27.
  • closures comprising a ring closed by a lever plug lid spanned by a diaphragm inside the container - usually held in place by the double seam.
  • another embodiment of the invention provides, as shown in Figure 7, a closure 28 having a ring 29, a diaphragm 30 inside the container 31, and a plug lid 32 to serve as a useful reclosure after the diaphragm 30 has been cut open.
  • the ring comprises a first flat annulus 8A, a second flat annulus 9A which is held outwardly offset from the first flat annulus 8A, and a third flat annulus 12A produced by an annular curl 11A as described above.
  • the first annulus 8A is offset from the second annulus 9A so that the third flat annulus 12A and first flat annulus present flush surfaces to the diaphragm 30 for adhesion or fusion as discussed above.
  • This embodiment differs from those described above in that the annular curl 11A is upstanding above the diaphragm 30 which is then secured to the underside of the annuli 8A, 12A.
  • Figure 8a shows a tool set 40 comprising upper and lower dies 42, 44 for manufacturing a ring as described above.
  • the upper die 42 comprises a component providing an annular cutting punch 60, a stamping punch 64 and a central cutting punch 66.
  • a holding ring 62 is moveable relative to this component and is located between the cutting punch 60 and stamping punch 64.
  • the lower die 44 comprises an outer cutting ring 68, an annular trough 70, a draw die 72, a stamping die 74 and an inner cutting ring 76.
  • the tool also comprises a spring loaded support 61 against which bears the cutting punch 60.
  • Figure 8a shows the first tool set 40 comprising upper and lower dies 42, 44.
  • the lower die supports on its outer and inner cutting rings 68, 76 a metal sheet 46 which is to form the ring of the closure.
  • the annular cutting punch 60 bears against the spring loaded support member 61 and cooperates with the outer cutting ring 68 to cut the outer edge of the blank which is to form the ring.
  • the cut edge is held between the punch 60 and the support member 61 and is drawn over the draw die 72 to form the peripheral flange 6.
  • the stamping punch 64 has an inner annular portion 65 which bears against the metal sheet 46 as the inner cutting ring 76 cooperates with the central punch 66 to cut an annular blank from the metal sheet ( Figure 8b). In this way, formation of the blank periphery commences.
  • the central part 48 is discarded.
  • the upper die 42 is lowered further as shown in Figure 8c so that the sheet metal is in contact with salient surfaces of the stamping punch 64 and stamping die 74.
  • the annular cutting punch 60 and stamping punch 66 are lowered still further so that the stamping punch forms with the stamping die 74 by stamping from the annular blank a component having a peripheral channel (which will form the peripheral flange 6 of the ring), an annular wall 7 depending from the peripheral flange 6, a stepped annular ledge providing the first and second annuli 8, 9 and the step portion 10 and a trough portion 11 which supports an upstanding central annular wall 12.
  • Peripheral restraint arises at the bend radii of the peripheral face of the draw die 72 and of the cutting ring 76 which cuts the blank.
  • the blank is cut prior to any shape forming steps.
  • the holding ring 62 is then sprung downwardly to release the shaped annular blank from the upper tool 42.
  • the shaped annular blank is then transferred to a second tool set as shown in Figure 8e.
  • the lower tool takes the same form as the lower tool of the first tool set but the upper tool comprises a central punch 56 and a holding ring 62.
  • the peripheral flange portion 6 is held between the holding ring 62 and the draw die 72.
  • a central punch 56 enters the annular wall 12 to fold that wall to form an outwardly directed curl 11 of which the raw edge terminates at the step portion 10.
  • a diaphragm is bonded to the annular blank by heat sealing.
  • Figure 9 illustrates how the curl 11 may terminate in a portion at a slight angle A to the surface of the step portion 10.
  • the material for the diaphragm is chosen to tolerate stretch to drape over the angled portion of the curl.
  • Figure 10 shows how the diaphragm 3 may be reinforced against abuse by bonding thereto the central part 48 cut during manufacture of the ring 2 with its periphery having been curled.
  • the curl is continuous, thus minimising the strain within the metal as it is formed.

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

Claims (5)

  1. Verfahren zum Herstellen eines Halterings (2), das umfaßt:
    Auflegen von Blech (46) auf einen äußeren Träger (68) eines unteren Formwerkzeugs (44), wobei der äußere Träger (68) eine Schneidkante bildet;
    In-Berührung-Bringen einer zusammenwirkenden Schneidkante (60) mit dem Blech (46), um einen Zuschnitt aus dem Blech (46) zu schneiden und die Schneidkante des Zuschnitts festzuhalten;
    Ausbilden einer Mittelöffnung im Zuschnitt, um einen Ring (2) zu erzielen, der an seinem Innenumfang eine nach oben stehende Ringwand (12) aufweist, die von einer abgestuften Ringleiste (8,9,10) umgeben ist; und
    nach Beendigung dieser Ausbildung Falten der nach oben stehenden Ringwand (12) derart, daß ihr freier Rand veranlaßt wird, sich auf den inneren Teil (9) der abgestuften Ringleiste (8,9,10) aufzulegen;
    dadurch gekennzeichnet, daß das Ausbilden der Mittelöffnung und der nach oben stehenden Wand und der abgestuften Ringleiste durchgeführt werden, indem die Mittelöffnung in den Zuschnitt gestanzt wird, während der Umfang des Zuschnitts in Berührung mit Prägeflächen (74) des unteren Formwerkzeugs (44) gedrückt wird, um dadurch die Bildung der abgestuften Ringleiste (8,9,10) zu beginnen, so daß sie auf der Innenseite in einer ringförmigen Rinne (11) endet, die auf der Innenseite in der nach oben stehenden Ringwand (12) endet.
  2. Verfahren zum Herstellen eines Verschlusses (1) für einen Behälter, bei welchem ein Ring (2) gemäß dem Verfahren des Anspruchs 1 hergestellt und sodann eine Membran (3) auf den Ring in konzentrischen Klebezonen (5A,5B) aufgeklebt wird, die durch den äußeren Teil (8) der abgestuften Ringleiste (8,9,10) und demjenigen Teil der nach oben stehenden Ringwand (12) gebildet werden, welcher so umgebogen worden ist, daß er auf dem inneren Teil (9) der abgestuften Ringleiste (8,9,10) aufliegt.
  3. Verfahren nach Anspruch 2, bei welchem das Aufkleben durch Heißsiegeln bewirkt wird.
  4. Vorrichtung zum Herstellen eines Halterings für einen Behälterverschluß, wobei die Vorrichtung aufweist kreuzförmige obere und untere Formwerkzeuge (42,44) mit zwei Sätzen von zusammenwirkenden Schneidkanten (60,66,68,76), wobei die Sätze in radialem Abstand voneinander angeordnet sind, um einen ringförmigen Zuschnitt aus Blech (46) zu schneiden, der vom unteren Formwerkzeug (44) unterstützt wird, und zwischen den beiden Sätzen von Schneidwerkzeugen (60,66,68,76) einen Satz von zusammenwirkenden Prägeflächen (64,74) zum Prägen des ringförmigen Zuschnitts, um eine abgestufte Ringleiste (8,9,10,11) zu formen, die an ihrer Innenseite in einer nach oben stehenden Ringwand (12) endet, und wobei das untere Formwerkzeug (44) ein Ziehteil (72) aufweist, über das der ringförmige Zuschnitt zum Formen eines Umfangsgebildes (6) gezogen werden kann.
  5. Vorrichtung nach Anspruch 4, bei der das obere Formwerkzeug und das untere Formwerkzeug von einem ersten Werkzeugsatz mit einem oberen Werkzeug und einem unteren Werkzeug gebildet sind, die aufeinander zu und voneinander weg bewegbar sind; wobei das obere Werkzeug (42) einen Schneidstempel (60), einen Haltering (62) innerhalb des Schneidstempels und einen Prägestempel (64) innerhalb des Halterings (62) sowie einen mittleren Schneidstempelteil (66) aufweist; und wobei das untere Werkzeug (44) aufweist einen Schneidring (68) zum Zusammenwirken mit dem Schneidstempel (60), einen federbelasteten ringförmigen Träger (61) zum Zusammenwirken mit einer Stirnfläche des Schneidstempels (60), eine Prägeform (74), die axial ausgerichtet ist mit einer damit zusammenwirkenden Fläche des Prägestempels (64), wobei die Prägeform einen inneren Schneidring (76) zum Zusammenwirken mit dem mittleren Schneidstempelteil (66) umfaßt; um beim Schließen der Werkzeuge (42,44) ein Formteil zu bilden, welches aufweist einen Umfangsflansch (6), eine kegelstumpfförmige Wand (7), die von der Innenseite des Flansches (6) nach unten steht, einen ersten flachen Ring (8), der sich von der Wand einwärts zu einem Stufenteil (10) erstreckt, der einen zweiten flachen Ring (9) in versetzter Lage zum ersten flachen Ring (8) hält, sowie einen zylindrischen Teil (12), der mit dem zweiten Ring durch einen Rinnenteil (11) verbunden ist; und die weiter aufweist einen zweiten Werkzeugsatz, in dem ein unteres Werkzeug eine Einrichtung (72) zum Halten des Formgebildes aufweist und ein oberes Werkzeug einen Haltering (62) zum Festklemmen des Umfangsflansches (6) gegen das untere Werkzeug und darin einen Stempel (56) mit einer profilierten Oberfläche zum Umfalzen des freien Randes des zylindrischen Teils (12) des Formgebildes aufweist, damit dieses den zweiten flachen Ring (9) überdeckt.
EP90307427A 1989-07-10 1990-07-06 Verfahren und Vorrichtung zur Herstellung eines Ringes für einen Behälterverschluss Revoked EP0408268B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90307427T ATE100405T1 (de) 1989-07-10 1990-07-06 Verfahren und vorrichtung zur herstellung eines ringes fuer einen behaelterverschluss.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8915787A GB2237259B (en) 1989-07-10 1989-07-10 Container closure
GB8915787 1989-07-10

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EP0408268A2 EP0408268A2 (de) 1991-01-16
EP0408268A3 EP0408268A3 (en) 1991-03-20
EP0408268B1 true EP0408268B1 (de) 1994-01-19

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EP (1) EP0408268B1 (de)
AP (1) AP168A (de)
AT (1) ATE100405T1 (de)
DE (1) DE69006124T2 (de)
GB (1) GB2237259B (de)
ZA (1) ZA905378B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006097005A1 (de) * 2005-03-17 2006-09-21 Soudronic Ag Aufreissdeckel und verfahren zu dessen herstellung
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

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9117216U1 (de) * 1990-05-23 1997-04-30 Züchner Verpackungen GmbH, 38723 Seesen Metallverpackung mitsiegelbarem Profilrand
FR2673911A1 (fr) * 1991-03-12 1992-09-18 Cmb Packaging Sa Emballage avec opercule.
JPH05122987A (ja) * 1991-10-28 1993-05-18 Matsushita Electric Works Ltd 電動カーテン駆動装置
GB2289663A (en) * 1994-05-21 1995-11-29 Metal Box Plc Containers and lids bonded thereto
US5697514A (en) * 1994-08-24 1997-12-16 Polystar Packaging, Inc. Container and closure with in-turned seam
DE19527291C2 (de) * 1995-07-26 1997-05-07 Vaw Ver Aluminium Werke Ag Verfahren zur Herstellung eines Konservenbehälters
DE19625174B4 (de) * 1996-06-24 2008-05-15 IMPRESS Metal Packaging S.A., Crosmières Deckelringfertigung ohne Rondenverschnitt
US5752614A (en) * 1996-11-19 1998-05-19 Sonoco Products Company Easy-opening closure for hermetic sealing a retortable container
DE19714982C2 (de) * 1997-04-10 1999-03-25 Alcan Rorschach Ag Verfahren zur Herstellung eines Verschlußringes mit einer umlaufenden Siegelfläche zum Aufsiegeln einer Verschlußmembran und einem Bördelrand zum Aufbringen des Verschlußringes auf den Rand eines Gebindes sowie nach dem Verfahren hergestellter Ring
WO2001007330A1 (de) * 1999-07-22 2001-02-01 Alcan Rorschach Ag Mit verschlussmembran versehener verschlussring sowie dessen herstellung
DE60116386T2 (de) * 2001-03-29 2006-08-17 Industrias Alimentarias de Navarra, S.A., Villafranca Verschlussmittel für dosen, insbesondere konservendosen
ES2237325B1 (es) * 2001-03-29 2006-06-01 Industrias Alimentarias De Navarra, S.A. Cierre para latas, en especial de conserva.
US7055713B2 (en) * 2002-11-12 2006-06-06 Sonoco Development, Inc. Easy-opening closure for retortable container
DE10338445B4 (de) 2003-08-19 2007-02-08 IMPRESS Metal Packaging S.A., Crosmières Deckelring mit geneigtem Flachsteg
FR2876625B1 (fr) † 2004-10-19 2008-08-08 Alsacienne D Aluminium Sa Soc Film d'emballage multicouche metalloplastique
CH703157B1 (de) * 2004-11-19 2011-11-30 Soudronic Ag Deckelring sowie damit versehener Deckel.
EP1747826A1 (de) * 2005-07-27 2007-01-31 Alcan Technology & Management Ltd. Deckelring für einen Dosendeckel sowie Verfahren zum Herstellen desselben
DE102006005058A1 (de) 2006-02-03 2007-08-16 IMPRESS Metal Packaging S.A., Crosmières Expansionsfähiger Deckel für eine Nahrungsmittel-Dose
PL1878666T3 (pl) * 2006-07-13 2011-03-31 Impress Metal Packaging Sa Pokrywa do pojemnika wyposażona w zdzieralną membranę
EP2184237B1 (de) 2008-11-10 2013-02-27 Crown Packaging Technology, Inc Behälterverschluss und Verfahren für dessen Herstellung
EP2398713A1 (de) * 2009-02-20 2011-12-28 Crown Packaging Technology, Inc. Metallendplatte mit loch
EP2248731A1 (de) 2009-05-07 2010-11-10 Crown Packaging Technology, Inc Behälter mit Klemmvorrichtung zum Halten eines Deckels
CH705595A1 (de) * 2011-10-05 2013-04-15 Soudronic Ag Verfahren und Vorrichtung zur Herstellung von Aufreissdeckeln.
US20150158655A1 (en) * 2013-12-10 2015-06-11 P.T. Toba Surimi Industries Packaged Crabmeat Product
CN107253560A (zh) * 2017-04-28 2017-10-17 浙江青莲食品股份有限公司 食品罐盖体及食品罐
WO2019112051A1 (ja) * 2017-12-07 2019-06-13 日本製鉄株式会社 ヒートシール蓋及び缶
CN110900675B (zh) * 2019-12-20 2023-06-20 昆山派胜智能科技有限公司 一种铝箔裁切装置及方法
CN111301853B (zh) * 2020-04-09 2021-12-24 广东中瑞制罐有限公司 用于倒出颗粒物料的盖体、包装物和颗粒物料容器
CN116586530A (zh) * 2023-07-11 2023-08-15 廊坊军兴溢美包装制品有限公司 一种易撕盖制作方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821326A (en) * 1955-05-12 1958-01-28 Fried Louis Receptacles and opening means therefor
DE1145949B (de) * 1957-03-28 1963-03-21 Louis Fried Behaelter, insbesondere Dose fuer Getraenke, und Verfahren zu seiner Herstellung
CH475136A (de) * 1968-07-11 1969-07-15 Albis Pack Ag Dose mit einer abtrennbaren Verschlussmembrane
US3547305A (en) * 1968-11-15 1970-12-15 Continental Can Co Easy opening container
US3868919A (en) * 1973-12-06 1975-03-04 Aluminum Co Of America Method and apparatus for forming easy opening container walls
GB1536543A (en) * 1975-01-13 1978-12-20 Metal Box Co Ltd Containers
CH629983A5 (de) * 1978-06-06 1982-05-28 Alusuisse Verfahren zur herstellung von deckelringen fuer konservendosen.
CH654542A5 (de) * 1982-04-05 1986-02-28 Sandherr Packungen Ag Verschlussdeckel fuer sterilisierbare dosen.
US4547305A (en) * 1982-07-22 1985-10-15 Lever Brothers Company Low temperature bleaching detergent compositions comprising peracids and persalt activator
SE453822B (sv) * 1985-08-16 1988-03-07 Plm Ab Behallare med tva lock

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006097005A1 (de) * 2005-03-17 2006-09-21 Soudronic Ag Aufreissdeckel und verfahren zu dessen herstellung
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
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

Also Published As

Publication number Publication date
DE69006124D1 (de) 1994-03-03
ATE100405T1 (de) 1994-02-15
AP9000191A0 (en) 1990-07-31
EP0408268A2 (de) 1991-01-16
GB2237259B (en) 1993-12-08
AP168A (en) 1992-01-23
ZA905378B (en) 1991-04-24
GB2237259A (en) 1991-05-01
EP0408268A3 (en) 1991-03-20
GB8915787D0 (en) 1989-08-31
DE69006124T2 (de) 1994-05-26

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