EP0808676A1 - Procédé de fabrication d'un couvercle de boîte à ouverture facile et couvercle de boîte à ouverture facile - Google Patents

Procédé de fabrication d'un couvercle de boîte à ouverture facile et couvercle de boîte à ouverture facile Download PDF

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Publication number
EP0808676A1
EP0808676A1 EP97106499A EP97106499A EP0808676A1 EP 0808676 A1 EP0808676 A1 EP 0808676A1 EP 97106499 A EP97106499 A EP 97106499A EP 97106499 A EP97106499 A EP 97106499A EP 0808676 A1 EP0808676 A1 EP 0808676A1
Authority
EP
European Patent Office
Prior art keywords
opening
ring
sheet metal
edge
lid
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
EP97106499A
Other languages
German (de)
English (en)
Other versions
EP0808676B1 (fr
Inventor
Werner Erfgen
Reiner Dr. Sauer
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 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 Hoesch GmbH filed Critical Rasselstein Hoesch GmbH
Publication of EP0808676A1 publication Critical patent/EP0808676A1/fr
Application granted granted Critical
Publication of EP0808676B1 publication Critical patent/EP0808676B1/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
    • B65D17/50—Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
    • B65D17/506—Rigid or semi-rigid members, e.g. plugs
    • 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

Definitions

  • the invention relates to a method for producing an easy-to-open can lid from a coated sheet metal blank.
  • the invention also relates to an easy-to-open can lid made of sheet metal.
  • Such can lids consist of a lid ring, which is produced by deep drawing and punching out of a coated sheet metal blank, for example of tinplate, chromed sheet metal or aluminum.
  • a coated sheet metal blank for example of tinplate, chromed sheet metal or aluminum.
  • an outer flange is provided for the later formation of a double fold
  • the inner edge of the cover ring has an annular flange formed by a flattened curl, which surrounds a cover opening.
  • a tear-off part which closes the lid opening is fastened to the ring flange by heat sealing.
  • a channel corresponding to the ring contour of the lid ring consisting of channel testicles and two channel walls, is first molded into the blank by a first deep-drawing process, with an outer flange on the edge of the blank for the later formation of a double fold and, on the other hand, a flat cup surrounded by the outer flange is formed.
  • This flat bowl consists of a wall part, namely the inner channel wall and a base part surrounded by this. The wall part extends essentially perpendicular to the bottom part. An opening is then punched into this base part in such a way that the cutting edge through which this opening is formed runs at some distance from the wall part or the inner channel wall.
  • the round sheet-metal disk that emerges from the base part when the original opening is punched out has a diameter which is still considerably smaller than the diameter of the final opening. Since it can no longer be used in the previous can lids, the punched-out disks can only be used as scrap. Since the area of the punched-out disk usually makes up more than half of the area of the original sheet metal blank, the material loss is very high. In addition, a separate aluminum foil is required to close the final lid opening, which must be coated with a heat-sealable layer. In order to save material, this film is often chosen to be very thin, so that there is a risk that this film will be accidentally punctured.
  • the invention is therefore based on the object of demonstrating a method for producing an easy-to-open can lid from a coated sheet metal blank, which enables the sheet metal part formed when the opening is punched out to be reused and thus reduces material loss to a minimum.
  • the invention is also based on the object of providing an easy-to-open can lid of the type mentioned at the outset, likewise with the aim of making it possible to reuse the punched sheet metal part and to reduce the loss of material.
  • the can lid according to the invention is characterized in that the lid ring is made from a sheet metal blank provided on one side with a heat-sealable coating, that the tear-open part is formed by the punched-out sheet metal part and that the curl is shaped and flattened out, that the can opening is smaller than the punched sheet metal part, the edge region and the ring flange overlap each other.
  • the invention is therefore based on the idea of continuing to use the sheet metal part which emerges from the blank when the opening is punched out, and to fasten it to the ring flange of the cover ring by heat sealing.
  • a sheet metal blank provided with a heat-sealable coating must be used and, on the other hand, the original punched-out opening must be reduced by suitable shaping of the cover ring in order to achieve an overlap of the sheet-metal part punched out to form the opening with the ring flange.
  • a part of the wall part of the bowl is rolled out and, by means of a suitable design of the shaping tools, it is ensured that the curl delimits an opening which is smaller than the opening originally formed by punching out before it is flattened and also afterwards.
  • the base part punched out of the blank to form the opening is used further for closing the opening can be.
  • the punched-out base part remains permanently connected to the associated cover ring and also remains in position relative to it, so that the base part again at the end of the cover production can be connected to the cover ring by heat sealing.
  • the metal blank or the sheet metal from which the metal blank is punched out has a heat-sealable coating on at least one side.
  • This coating can be, for example, a film made of polypropylene or polyethylene terephthalate or a sealable organic lacquer.
  • This coating is arranged at the beginning of the lid production on the inside of the sheet metal blank or the later lid, ie on the side that faces the inside of the can in the finished lid.
  • the heat-sealable coating is brought to the outside of the cover in the area of the curl and by flattening it in the area of the ring flange. Since the heat-sealable coating is arranged on the later inside of the cover or the base part in the punched-out base part, two heat-sealable coatings come together when heat-sealing, which ensures a pressure-tight seal.
  • FIGS. 3 and 6 The finished, easy-to-open can lid is shown in FIGS. 3 and 6 in each case in a partial section, this partial section showing the edge region of the can lid 1.
  • This can lid 1 consists of a lid ring 2 and a tear-open part 3.
  • This tear-open part 3 is formed in the can lid 1 according to the invention by a base part which is produced in the manufacture of the lid ring 2.
  • Both the cover ring 2 and the base part 3, which are made from the same sheet metal blank, have a heat-sealable coating 4 on their inside - this is the side facing the can body in the drawings, which is below in the drawings - that has a heat-sealable coating 4 which is only available in Figure 8 is shown.
  • This coating can be a laminated film made of polypropylene, polyethylene terephthalate, a sealable lacquer or the like.
  • the bottom part 3 is sealed onto the ring flange 5 of the cover ring 2.
  • the cover ring 2 also has an outer flange 6 which, together with a corresponding outer flange 7 of the can body 8, serves to form a double fold D, as shown in FIG.
  • FIGS. 1-3 A first way of producing the can lid 1 is described below with reference to FIGS. 1-3:
  • a sheet metal for example tinplate, chrome-plated ultrafine sheet or aluminum sheet, with a thickness between 0.05 and 0.3 mm is used to manufacture the can lid.
  • This sheet has a heat-sealable coating 4 made of an organic material on one side, which will later be referred to as the inside, and which faces the inside of the can in the finished can, as has already been mentioned above.
  • the sheet can be painted on its opposite outside.
  • a sheet metal blank (not shown) is first punched out of this sheet. By deep-drawing this sheet metal blank, the outer flange 6 is preformed according to FIG. 1 and also a flat cup N surrounded by the outer flange, which consists of a base part 3 and a wall part 9.
  • the base part 3 is connected to the outer flange via the wall part 9.
  • the wall part 9 extends essentially perpendicular to the base part 3 or also perpendicular to the later cover plane EE.
  • the coating 4, not shown is located on the downward side of the outer flange 6, the left side Side of the wall part 9 and the downward side of the bottom part 3.
  • the cover ring 2 is preformed, an inner cut edge 10 being formed on the cover ring 2, which surrounds the opening 11 formed by punching out the base part 3.
  • the punched-out base part 3 Since the punched-out base part 3 is to be connected again to the cover ring 2 after further shaping steps, it is important that the two parts do not move apart during further transport in the transfer shaping tools. For this reason, the punching out of the bottom part 3 should not take place along a self-contained cutting edge 10, but rather a few narrow connecting webs should be used when punching out between the bottom part 3 and the wall part 9, e.g. two to four. However, these connecting webs are not shown in the drawing.
  • the wall part 9 After punching out 3 of the bottom part, the wall part 9 is partially, ie part of its total height, rolled outwards, ie towards the later outside of the cover or upwards according to FIG. In this way, a curl 19 is formed.
  • This desired shaping of the roller 19 to reduce the original opening 11 into a smaller opening 11 ' is brought about by a corresponding configuration of the forming tools.
  • reducing the original opening 11 to a smaller, similar opening 11 ' a mutual overlap of the edge region 3a of the base part 3 with the curl 19 is initiated.
  • the cut edge 10 is brought to the outside of the cover ring 2.
  • the outside also means the outside of the final can lid.
  • the curl 19 is then flattened into the cover ring plane E-E or, if appropriate, into a plane parallel to it. This is intended to form the ring flange 5 suitable for heat sealing and also to make the overlap of the edge region 3a of the base part 3 with the ring flange 5 as large as possible.
  • the opening 11 ' is further reduced and the final opening 11' 'is then created.
  • the edge region 3a of the base part 3 is finally connected to the surface of the ring flange 5 lying on the outside of the cover ring by heat sealing.
  • rolling the wall part 9 outwards and flattening the curl 19 results in the heat-sealable one originally located on the underside of the sheet metal blank or the inside of the cover ring 2 Coating to lie in the area of the ring flange 5 to the outside.
  • the heat-sealable coating 4 of the base part 3 is then sealed onto this outwardly directed part 4a of the coating 4. This ensures a particularly good and pressure-tight seal between cover ring 2 and base part 3.
  • FIGS. 4-6 Another way of deep drawing and punching a sheet metal blank to produce the can lid is shown in FIGS. 4-6. To avoid repetition, parts of the same function are designated with the same reference numerals as in FIGS. 1-3. The description given above also applies analogously to the way for producing the can lid shown in FIGS. 4-6.
  • a groove 12 with a substantially U-shaped cross section is formed in the sheet metal blank by deep-drawing adjacent to the outer flange 6 to form the flat cup 1, which is now open at the bottom.
  • This role 12 has an outer wall part 9b directly adjoining the outer flange 6 and an inner wall part 9a adjoining the bottom part 3. After deep-drawing, these two wall parts 9a and 9b extend essentially perpendicular to the later cover plane E-E. They are connected to each other by the arcuate connector 9c.
  • the base part 3 is punched out in the immediate vicinity of its transition to the inner wall part 9a, as shown in FIG.
  • a few narrow bars should be used for mutual cutting
  • the connection between the base part 3 and the wall part 9a remain so that the base part 3 does not move away from the cover ring 2 during further transport in the tool.
  • the inner wall part 9a is rolled in to form the curl 19 and at the same time to reduce the original opening 11 into a smaller, similar opening 11 '.
  • the curling can be modified by molding a small holding groove 13 adjacent to the cutting edge 10 towards the opening 11 '. Similar to the narrow webs, this holding groove 13 serves to hold the punched-out base part 3 during further transport in the transfer forming tools so that the base part 3 does not move away from the cover ring 2.
  • the procedure can also be such that, starting from the state shown in FIGS flattened in order to then produce the seal in the end position according to FIG. 3 or 6.
  • the base part 3 is turned outwards relative to the cutting edge 10, ie towards the outside of the cover, transferred. This movement is expediently carried out by the stamping tool.
  • the offset is necessary because when opening the opening 11 is reduced and the bottom part 3 could no longer pass through the opening to the outside.
  • a sufficiently wide, circumferential sealing surface of the width S is formed, which in practice is approximately 3 mm wide.
  • the base part 3 is to be torn off from the ring flange 5 of the cover ring 2 along this sealing surface.
  • the base part for tearing open the sealing surface must be provided with a handle which allows gripping with the fingers to introduce the tearing forces.
  • a handle is formed by an opening tab or, even better, an opening ring as shown in FIGS. 9-12.
  • Such an opening ring 14 has a fastening tab 15 which is fastened in the edge region 3a of the base part 3 on the outside thereof by heat sealing, gluing or the like.
  • the fastening tab 15 can be designed and fastened differently.
  • a score line 16 which essentially corresponds to the contour of the fastening tab 15 is pressed into the outside of the bottom part. This score line is replaced by appropriate before punching out the bottom part Formation of the tools formed.
  • the score line 16 extends up to the vicinity of the overlap and sealing area of the base part, indicated by a dashed line in FIG. 10. If the opening ring 14 is pulled upward on its area 14a opposite the fastening tab 15 to open the can, the fastening tab 15 tears open the base part 3 along the score line 16. Since this score line extends into the vicinity of the sealing area, the tearing also takes place into the vicinity of the sealing area and the opening force is specifically introduced into the sealing area. When pulling the opening ring 14, the entire base part 3 is then pulled off the ring flange 5 along the sealing region.
  • the fastening tab 15 protrudes outwards from the opening ring 14 and is bent through 180 ° along a bending edge 15a. Its bent, free section 15b is connected in the edge region 3a of the base part 3 to the outside thereof in such a way that the bending edge 15a is arranged in the vicinity of the outer edge 3b of the base part 3 and runs essentially parallel to it.
  • the opening tab is first pivoted upward about the bending edge 15a according to the arrow A and then the opening ring 14 is pulled in the direction B.
  • the opening force is initially introduced at the outer edge 3b of the base part and, when the opening ring 14 is pulled further, the entire base part 3 is finally pulled off the cover ring 2 along the sealing region.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Closures For Containers (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Packages (AREA)
EP97106499A 1996-05-21 1997-04-19 Procédé de fabrication d'un couvercle de boíte à ouverture facile et couvercle de boíte à ouverture facile Expired - Lifetime EP0808676B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29609130U 1996-05-21
DE29609130U DE29609130U1 (de) 1996-05-21 1996-05-21 Leicht zu öffnender Dosendeckel

Publications (2)

Publication Number Publication Date
EP0808676A1 true EP0808676A1 (fr) 1997-11-26
EP0808676B1 EP0808676B1 (fr) 1999-11-24

Family

ID=8024241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106499A Expired - Lifetime EP0808676B1 (fr) 1996-05-21 1997-04-19 Procédé de fabrication d'un couvercle de boíte à ouverture facile et couvercle de boíte à ouverture facile

Country Status (11)

Country Link
US (2) US5913651A (fr)
EP (1) EP0808676B1 (fr)
AT (1) ATE186860T1 (fr)
CZ (1) CZ150097A3 (fr)
DE (2) DE29609130U1 (fr)
DK (1) DK0808676T3 (fr)
ES (1) ES2138847T3 (fr)
GR (1) GR3031937T3 (fr)
IL (1) IL120850A0 (fr)
PL (1) PL184235B1 (fr)
RU (1) RU2179489C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10197223B4 (de) * 2001-03-29 2013-04-18 Industrias Alimentarias De Navarra, S.A. Dichtung für Konserven, insbesondere Eingemachtes
CH716830A1 (de) * 2019-11-22 2021-05-31 Soudronic Ag Verfahren und Vorrichtungen zur Herstellung von Aufreissdeckeln.

Families Citing this family (24)

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US6401956B1 (en) * 1999-09-21 2002-06-11 Crown Cork & Seal Technologies Corporation Safety container end having improved opening characteristics
CN2434249Y (zh) * 2000-08-09 2001-06-13 王和 易拉瓶盖
US6427862B1 (en) * 2000-11-07 2002-08-06 Ming-Tang Hsu Self-opening can
US20050145630A1 (en) * 2004-01-05 2005-07-07 Sonoco Development, Inc. Easily openable closure for a retortable container having a metal end to which a membrane is sealed
WO2005070585A1 (fr) * 2004-01-16 2005-08-04 Heyn William M Surface de scellage inclinee pour panneau d'extremite de contenant
US7156252B2 (en) * 2004-04-30 2007-01-02 Sonoco Development, Inc. Container closure with dual heat seal and magnetic seal
US7270246B2 (en) * 2004-08-20 2007-09-18 Stolle Machinery Company, Llc Non-circular can end with corner-mounted tab and tooling and a conversion press for providing same
DK2143509T3 (en) 2005-03-01 2018-02-19 Crown Packaging Technology Inc METHOD AND APPARATUS FOR MANUFACTURING A METAL BOX
EP1858767B1 (fr) * 2005-03-17 2018-05-02 Soudronic AG Couvercle a ouverture facile et son procede de production
DE102006005058A1 (de) * 2006-02-03 2007-08-16 IMPRESS Metal Packaging S.A., Crosmières Expansionsfähiger Deckel für eine Nahrungsmittel-Dose
US7922025B2 (en) * 2006-09-19 2011-04-12 Crown Packaging Company, L.P. Easy open can end with high pressure venting
DE502007003452D1 (de) * 2006-09-29 2010-05-27 Soudronic Ag Bergdietikon Gebinde mit einem Aufreissdeckel, Aufreissdeckel sowie Aufreissdeckelring
PT2052984E (pt) * 2007-10-25 2011-03-10 Impress Group Bv Método para preparar e formar uma tampa e tampa
PT2062828E (pt) * 2007-11-21 2011-07-25 Impress Group Bv Recipiente
CN203359053U (zh) * 2010-11-29 2013-12-25 皇冠包装技术公司 封闭件
USD637489S1 (en) 2010-12-10 2011-05-10 Pactiv Corporation Pull grip feature of a container lid
USD638704S1 (en) 2010-12-10 2011-05-31 Pactiv Corporation Container lid
SG195092A1 (en) * 2011-07-21 2013-12-30 Crown Packaging Technology Inc Metal cans with peelable lids
GB2500629A (en) * 2012-03-27 2013-10-02 Chao-Chuan Chen Molding Method Of A Heat Dissipating Cover For Spherical Light Source
CN102849324B (zh) * 2012-07-13 2014-11-05 浙江诚信包装材料有限公司 易拉罐的封口结构及加工工艺
US9333289B1 (en) 2015-01-16 2016-05-10 Plas-Tech Engineering, Inc. Tamper evident closure container
GB2536265B (en) * 2015-03-11 2018-01-24 Crown Packaging Technology Inc Ringless metal cans
BR112020007255B1 (pt) * 2017-12-07 2023-04-25 Nippon Steel Corporation Tampa selada a quente e lata
USD999631S1 (en) * 2021-07-23 2023-09-26 Stolle Machinery Company, Llc Ring pull tab

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US4125204A (en) * 1977-03-07 1978-11-14 Klein Gerald B Gated can end with shear offset defining gate
DE2707064A1 (de) * 1977-02-18 1978-11-16 American Can Co Verfahren zur ausbildung eines oeffnungslappens in blechbehaelter- endverschluessen
DE2838505A1 (de) * 1978-06-06 1979-12-13 Alusuisse Verfahren zur herstellung von deckelringen fuer konservendosen
DE3639428C1 (de) * 1986-11-18 1987-08-27 Rasselstein Ag Verfahren zum Herstellen eines mit einem eindrueckbaren OEffnungslappen versehenen Dosendeckels aus Blech
EP0321394A1 (fr) * 1987-12-14 1989-06-21 Alcan Rorschach AG Ensemble de fermeture en tôle, procédé pour sa fabrication et récipient muni d'un tel ensemble de fermeture
DE4332306A1 (de) * 1993-09-23 1995-03-30 Rasselstein Ag Verfahren zur Herstellung eines leicht zu öffnenden Dosendeckels aus Blech

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US161634A (en) * 1875-04-06 Improvement in methods of producing flanged lids and collars for sheet-metal cans
US1743544A (en) * 1928-08-20 1930-01-14 Helberg Oscar Method of manufacturing tin closures
US1866469A (en) * 1930-04-04 1932-07-05 R B Davis Company Method of forming can closures
DE3413918A1 (de) * 1984-04-13 1985-10-24 Weidenhammer Packungen KG GmbH & Co, 6832 Hockenheim Kombidose
US4544080A (en) * 1984-10-25 1985-10-01 General Can Company, Inc. Closure having reinforced pull tab
FR2648791B1 (fr) * 1989-06-23 1991-11-29 Lorraine Laminage Procede de fabrication d'un element de fermeture dit a ouverture controlee d'une boite metallique et element de fermeture obtenu selon ce procede
US5069355A (en) * 1991-01-23 1991-12-03 Sonoco Products Company Easy-opening composite closure for hermetic sealing of a packaging container by double seaming
GB2289663A (en) * 1994-05-21 1995-11-29 Metal Box Plc Containers and lids bonded thereto
US5752614A (en) * 1996-11-19 1998-05-19 Sonoco Products Company Easy-opening closure for hermetic sealing a retortable container

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
DE2707064A1 (de) * 1977-02-18 1978-11-16 American Can Co Verfahren zur ausbildung eines oeffnungslappens in blechbehaelter- endverschluessen
US4125204A (en) * 1977-03-07 1978-11-14 Klein Gerald B Gated can end with shear offset defining gate
DE2838505A1 (de) * 1978-06-06 1979-12-13 Alusuisse Verfahren zur herstellung von deckelringen fuer konservendosen
DE3639428C1 (de) * 1986-11-18 1987-08-27 Rasselstein Ag Verfahren zum Herstellen eines mit einem eindrueckbaren OEffnungslappen versehenen Dosendeckels aus Blech
EP0321394A1 (fr) * 1987-12-14 1989-06-21 Alcan Rorschach AG Ensemble de fermeture en tôle, procédé pour sa fabrication et récipient muni d'un tel ensemble de fermeture
DE4332306A1 (de) * 1993-09-23 1995-03-30 Rasselstein Ag Verfahren zur Herstellung eines leicht zu öffnenden Dosendeckels aus Blech

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10197223B4 (de) * 2001-03-29 2013-04-18 Industrias Alimentarias De Navarra, S.A. Dichtung für Konserven, insbesondere Eingemachtes
CH716830A1 (de) * 2019-11-22 2021-05-31 Soudronic Ag Verfahren und Vorrichtungen zur Herstellung von Aufreissdeckeln.

Also Published As

Publication number Publication date
CZ150097A3 (en) 1997-12-17
US5913651A (en) 1999-06-22
DE59700744D1 (de) 1999-12-30
DK0808676T3 (da) 2000-03-27
US6036043A (en) 2000-03-14
PL184235B1 (pl) 2002-09-30
RU2179489C2 (ru) 2002-02-20
ATE186860T1 (de) 1999-12-15
ES2138847T3 (es) 2000-01-16
IL120850A0 (en) 1997-09-30
GR3031937T3 (en) 2000-03-31
EP0808676B1 (fr) 1999-11-24
PL319960A1 (en) 1997-11-24
DE29609130U1 (de) 1997-09-18

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