EP2208554A2 - Procédé et dispositif destinés à la fabrication de couvercles à ouverture facile - Google Patents

Procédé et dispositif destinés à la fabrication de couvercles à ouverture facile Download PDF

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Publication number
EP2208554A2
EP2208554A2 EP10000342A EP10000342A EP2208554A2 EP 2208554 A2 EP2208554 A2 EP 2208554A2 EP 10000342 A EP10000342 A EP 10000342A EP 10000342 A EP10000342 A EP 10000342A EP 2208554 A2 EP2208554 A2 EP 2208554A2
Authority
EP
European Patent Office
Prior art keywords
tear
open
tab
lid
adhesive
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
EP10000342A
Other languages
German (de)
English (en)
Other versions
EP2208554A3 (fr
EP2208554B1 (fr
Inventor
Peter Gysi
Marcel Oberholzer
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.)
Soudronic AG
Original Assignee
Soudronic AG
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 Soudronic AG filed Critical Soudronic AG
Publication of EP2208554A2 publication Critical patent/EP2208554A2/fr
Publication of EP2208554A3 publication Critical patent/EP2208554A3/fr
Application granted granted Critical
Publication of EP2208554B1 publication Critical patent/EP2208554B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B21D51/443—Making closures, e.g. caps easily removable closures, e.g. by means of tear strips
    • 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
    • B65D2517/5072—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

  • the invention relates to a method for the production of tear-open lids, comprising the steps of feeding a strip of tear-open film material, punching a foil section with a tear-open tab from the strip, sealing the foil section onto a cover ring and bending the tear-open tab onto the cover. Furthermore, the invention relates to a device for the production of tear-open lids according to claim 9 and a tear-open lid according to claim 13.
  • lid for can or can-like packaging as on the packaging top permanently attached metal lid, which have a cover ring with a removal opening. This remains closed until the first use of the contents of the package by means of a heat-seal applied to the cover ring, tear-away film; Such covers are referred to as tear-open.
  • the film on the lid is called a tear-open film and can be, for example, a metal foil, a metal composite foil or a pure plastic foil.
  • An additional, arranged over the metal lid lid made of plastic makes the packaging during the period of use of the contents again closed. To open the tear-open lid or to tear off the sealed-on foil, this has a tear-open tab.
  • the prefabricated tear-open lid When closing a can after its filling, the prefabricated tear-open lid is crimped on the jacket of the can. In this Manufacturing step can interfere with a protruding tear tab, can crumple and can even be torn off.
  • the application of the plastic lid is also usually only possible if the tab is bent back. It is therefore desirable that the tear tab is bent back onto the lid and maintains this position. This is possible with metal foils, but even with these doses in the sterilization of the filled and sealed can, the effect of heat and the cooling process can cause a deformation and an undesired protrusion of the tear tab.
  • a permanent bending back is more difficult and there is still more likely to emerge during sterilization due to different thermal expansion of the layers.
  • FIGS. 1 to 9 serve to explain manufacturing steps.
  • the invention is based on the object to provide an improvement in Aufreissdeckeln.
  • the adhesive surface in the form of a piece of double-sided adhesive tape and in particular an adhesive tape with different adhesive force on the two adhesive sides, wherein the tape is applied so that the lower bond strength is effective in the tear tab.
  • FIG. 1 shows a schematic side view of an apparatus 1 for the production of tear-open.
  • This has on a machine frame 2 several processing stations 3 to 9.
  • a conveyor 10, 13, 14 conveys lid parts and the finished lid in the conveying direction, which is indicated by the arrow C, from the beginning of the device at the stack 11 to the end of the device where the lid via slides into the trays 16 or 17 arrive. From the stack 11 lid parts are stacked in a known manner and get into the conveyor.
  • FIG. 2 shows stacked metal lid blanks 20 as they are ready in the stack 11 at the beginning of the conveyor.
  • These blanks 20 are for example round metal discs of eg 11 cm diameter. Of course, other basic shapes, such as square or rectangular discs and other diameters are readily possible.
  • the blanks 20 are already in a processing machine, not shown, at its edge as in FIG. 2 shown preformed. In the FIG. 2 and the following ones FIGS. 3 to 9 In each case only one sector of the entire disc or the lid is shown to simplify the figures.
  • the first processing station 3 of FIG. 1 is punched by punching with top and bottom tool an opening in the disc, which in FIG. 3 it can be seen in which the edge of the opening is denoted by 21 and the punched round disc with 27.
  • This disc 27 arrives as waste in the container 12 of FIG. 1 , This results in an annular cover part 20 'with an opening which forms the removal opening of the finished cover.
  • the punching processing station 3 is - as is the case with the other stations - driven by a drive 15.
  • the edge 21 is pulled down, whereby, for example, the in FIG. 4 shown shape 22 of the edge is achieved.
  • the annular cover parts 20 'then pass into the sealing station 5.
  • a film section 25 is punched with punching means 6 and placed over the opening of the cover ring 20' and fixed there by heat sealing, which in the FIGS. 5 and 6 is apparent.
  • the tear-open foil 25 which is a metal foil or composite foil or a plastic foil can be, is provided in a known manner on its underside with a sealable plastic layer.
  • the tear-open film 25 can be, for example, a multi-layer composite film with plastic layers and aluminum layers, for example having a layer of hot-sealable polypropylene (PP) on the underside of the cover and a following layer of PET followed by an aluminum layer which again is provided with a PET at the top side of the tear-off film Layer is provided. Any printing is then arranged under this PET layer.
  • a further embodiment of the tear-open film may be a lid-side or filling material-side hot-seal lacquer layer followed by the aluminum layer and the top-side PET layer.
  • the required, in this example round film blank 25 is usually stamped out of a wide film web in the station 5.6 and placed over the central recess of the annular disc and through the sealing station, the film at the edge of the circular recess of the cover part 20 'under heat pressed so that the film 25 is sealed to the metal lid portion 20 'by melting and subsequent cooling of the sealable layer.
  • the tear-open lid 28 is formed.
  • a cooling processing station 7 may be provided.
  • the film 25 can be embossed 24 (FIG. FIG. 7 ), and it is further the edge 22 crimped to the finished edge 23.
  • the tab can also be bent so that it comes to rest on the lid.
  • a test which usually a leak test for the on the lid applied tearing film 25 includes, for which purpose an air pressure difference between the bottom and top of the lid is generated. If the film is tightly mounted on the cover ring, the cover enters the receptacle 16 for the finished cover. If a leak is detected, the lid passes over the other slide shown in the waste container 17th
  • FIG. 9 shows a finished Aufreissdeckel 28 in plan view.
  • the tear-open film 25 is provided with a pull-tab 29, which is bent back onto the lid.
  • the tear-open tab is fastened to the cover with an adhesive surface 30, which is preferably formed by a double-sided adhesive tape, in particular with different adhesive force of the two hinge sides. It can also be provided an adhesive surface, which is formed by a sealing wax.
  • FIG. 10 shows an enlarged view of the region of the tear-open with the pull-tab 29, which is fastened in the bent-back position detachably on the adhesive surface formed by a piece of double-sided adhesive tape.
  • the adhesive tape 33 is preferably adhesively bonded to different degrees on both its sides, so that the adhesion of the adhesive tape to its underside (in the FIG. 10 seen) or at the Aufreissfolien preparation is greater than at its top, where the tear-open tab 29 is held adhesive. This ensures that the tab 29 can be easily detached from the adhesive surface while the adhesive tape remains adhered to the tear-open foil of the lid.
  • the edge of the removal opening is provided in this example with a different shape 23 'as in FIG. 7 ,
  • FIG. 11 shows roughly schematically a part of a device for the production of tear-open, which, for example, a device according to FIG. 1 is.
  • conveyor 4 rows lid parts 20, 20 'and cover 28 are conveyed parallel in the conveying direction C.
  • a belt 35 of the tear-open film material enters the sealing station and is punched there to form the film sections 25 with the tear-open tab 29.
  • the stamping is chosen so that as little as possible stamping waste remains.
  • the foil sections 25 for the second top row of lid rings 20 'are punched in the row to the left of the central longitudinal axis of the band 35 and the foil sections 25 for the second bottom row of lid rings 20' are punched out in the row to the right of the central longitudinal axis of the band 35.
  • the punched-out foil sections are each sealed onto the associated cover ring, as is known to the person skilled in the art.
  • the belt 35 may be conveyed by drive rollers 36 or in other known ways.
  • the adhesive surfaces 30 are applied to the belt 35 on its upper side 26. This is done so that at least one such adhesive surface is applied to the tape 35 at each later officersstanzenden film section 25 and that at the point on the film section 25, which later in the finished tear-open lid 28, the bent back flap 29 of this film section comes to rest.
  • the punching of the individual film sections 25 in the sealing station can be controlled by printing marks on the belt, for example. These print marks can also be used as aids when the adhesive surfaces 30 are correctly placed, if necessary. But it can also serve as an imprint on the Aufreissfolienabêten itself as a marker.
  • a double-sided adhesive tape 33 is passed transversely to the tear-open film belt 35 over this.
  • the adhesive tape could also be passed over the belt 35 obliquely or in the same direction.
  • a band 33 several individual bands could be provided.
  • the double-sided adhesive tape has on its the band 35 opposite bottom, which preferably has stronger adhesion than the top, no protective film.
  • a protective film 37 is provided on the upper side, which in the FIG. 11 is visible in plan view.
  • a suitable for applying to the tape 35 double-sided adhesive tape with correspondingly different bond strength on the two sides and with one-sided protective film on the less adhesive side is for example the tape tesafix 6917 from tesa Bandfix AG, Bergdietikon, Switzerland.
  • This adhesive tape is known to be used for the reversible closure of film bags.
  • a punching device FIG. 12
  • the adhesive tape running over the belt 35 is punched, so that the adhesive surfaces 30 are punched out of the adhesive tape 33. They are preferably applied by the punching tool directly to the belt 35, where they stick with their protective film-free underside.
  • the top of each adhesive surface is covered by the die-cut protective film 37. In band 33, the voids remain 33 '.
  • a lid 28 is formed with a tear-open film 25, from which a tab 29 projects beyond the edge of the lid and in which on the lid, a splice 30 is provided, which is still covered with a protective film 37.
  • the protective film 37 allows the trouble-free sealing of the tear-open film 25 on the cover ring and protects the adhesive surface 30th
  • the protective film 37 is removed and the tab 29 is bent back onto the free adhesive surface 30, where it is fixed by the adhesive, resulting in the in the FIGS. 9 and 10 shown cover 28 leads.
  • FIG. 11 In the example of FIG. 11 In this case, in the station 40, the removal of the protective film 37 and in the station 41, the bending back of the tab 29. In between the lid is rotated in a defined position for the bending back, but this can also be done before. At the end of the conveyor line of FIG. 11 then the lid 28 is visible with glued-back tab. The bending back of the tab is already known in the art and will not be explained here. On the other hand, the punching of the splices and the removal of the protective film 37 will be discussed in more detail below.
  • an adhesive surface in the form of a surface 30 of sealing wax can be provided for fixing the tab 29 on the cover 28.
  • an adhesive can be applied.
  • the adhesive surface 30 is applied before punching the film portion 25 on the belt 35 and also applied to a location of the belt 35 on which the flap 29 is bent back in the finished cover 28.
  • the sealing lacquer or the adhesive can be printed on the tape 35, for example by means of pressure rollers or by pad printing or they can be sprayed on. This can, as with figure 11 for the adhesive tape, take place directly before sealing the film section 25.
  • the application of the splice 30 by means of sealing wax or an adhesive can also be done in advance, especially in the production of the tape 35 from the Aufreissfolienmaterial, wherein in the case of an adhesive cover with a protective film may be provided, which in the formation of the adhesive surface 30 with Sealing wax is not necessary, as this causes no liability until the seal.
  • FIG. 12 shows the punching of the subsequent bonding surfaces 30 forming pieces of double-sided adhesive tape 33.
  • This is withdrawn from a roll 34 and passed over the belt 35, which in FIG. 12 can be seen cut from the plane of the drawing.
  • the belt 35 runs over a support surface 36, so that the punches can press the punched piece of adhesive tape onto the belt 35.
  • the construction of driven punching tools 38 for the adhesive tape 33 is a professional measure.
  • the band 33 is not adhesive through the protective film 37, so that the punch of each punching tool does not need to be protected against sticking to the adhesive tape.
  • the underside of the adhesive tape is adhesive, so that the die and the adjacent areas of the punch with a non-stick coating, such as a Teflon coating must be provided so that the tape does not adhere to the die or its environment during the punching.
  • FIGS. 13 and 14 Based on FIGS. 13 and 14 the removal of the protective film 37 from the adhesive surface 30 is explained.
  • an air jet 43 obliquely blown from the side of the adhesive surface 30, which raises the protective film and dissolves.
  • a suction flow 46 is generated and thus air is sucked off over the adhesive surface, which promotes the dissolved protective film 37.
  • FIGS. 13 and 14 show a partially sectioned view of a station 41 without the conveyor or the holding means for the cover 28.
  • the edge of the adhesive surface is enlarged relative to a round adhesive surface by the adhesive tape is punched star-shaped or gear-shaped. This promotes detachment of the protective film 37 from the adhesive tape when blowing laterally onto the adhesive surface.
  • a suction opening 45 centrally above the adhesive surface 30 can aspirate the detached protective film 37 by means of a suction flow 46 generated by negative pressure.
  • a mechanical release by grippers or fingers can be provided, which lift the protective film at least at the edge of the adhesive surface.
  • tear-open lids 28 from cover rings 20 'with tear-open foil 25 having a tear-open tab 29, the tear-open tab is thus fixed by an adhesive surface 30, which is applied to the tape from a belt 35 of this material prior to punching out the tear-off foil 25. In this way results in a simple and suitable for the production of tear-open at high speed tab fixation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Closing Of Containers (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP10000342A 2009-01-16 2010-01-15 Procédé et dispositif destinés à la fabrication de couvercles à ouverture facile Not-in-force EP2208554B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00061/09A CH700263A1 (de) 2009-01-16 2009-01-16 Verfahren und Vorrichtung zur Herstellung von Aufreissdeckeln.

Publications (3)

Publication Number Publication Date
EP2208554A2 true EP2208554A2 (fr) 2010-07-21
EP2208554A3 EP2208554A3 (fr) 2011-02-16
EP2208554B1 EP2208554B1 (fr) 2012-03-07

Family

ID=42167349

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10000342A Not-in-force EP2208554B1 (fr) 2009-01-16 2010-01-15 Procédé et dispositif destinés à la fabrication de couvercles à ouverture facile

Country Status (6)

Country Link
US (1) US20100183406A1 (fr)
EP (1) EP2208554B1 (fr)
AT (1) ATE548138T1 (fr)
CH (2) CH700263A1 (fr)
ES (1) ES2379859T3 (fr)
PT (1) PT2208554E (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704695A1 (de) * 2011-03-25 2012-09-28 Soudronic Ag Vorrichtung und Verfahren zur Herstellung von Aufreissdeckeln.
WO2012143322A1 (fr) * 2011-04-20 2012-10-26 Crown Packaging Technology, Inc. Procédé pour former une fermeture de métal

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EP2157023B1 (fr) * 2008-08-21 2014-10-22 Ardagh MP Group Netherlands B.V. Couvercle d'une boîte et procédé d'orientation d'un tel couvercle
TWI589494B (zh) 2014-03-28 2017-07-01 World Bottling Cap Llc 具有開瓶器組件的冠形瓶蓋
US20170129643A9 (en) 2014-03-28 2017-05-11 World Bottling Cap Llc Bottle crown with opener assembly
CN107695234B (zh) * 2017-11-23 2023-11-14 天津普润泽实业有限公司 易拉瓶盖一出多个成型装置及其成型方法
KR102858249B1 (ko) * 2023-11-27 2025-09-11 (주)제로투세븐 당김손잡이의 들뜸이 방지된 분말 용기의 캡 및 이의 제조 방법

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WO2006017953A1 (fr) 2004-08-18 2006-02-23 Soudronic Ag Procede et dispositif pour le transport d'objets a usiner

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US4741450A (en) * 1986-04-28 1988-05-03 Elton Braude Drink-through beverage lid
US4846774A (en) * 1988-01-26 1989-07-11 Bernal Rotary Systems, Inc. Rotary die cutting and laminating process and machine
EP1045797A1 (fr) * 1998-01-07 2000-10-25 DIAMOND, George B. Fermeture et recipient refermable a ouverture facile
EP1386852A1 (fr) * 2002-07-26 2004-02-04 Crown Cork & Seal Technologies Corporation Structure pour couvercle
CH705057B1 (de) * 2003-05-13 2012-12-14 Soudronic Ag Bearbeitungseinrichtung und Verwendung derselben zur Herstellung von Deckeln mit Aufreissfolie.
DE102004012556A1 (de) * 2004-03-15 2005-10-06 Vitus Maria Huber Verpackungsvorrichtung für flüssige oder pastöse Medien, insbesondere für Milchprodukte
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US8231024B2 (en) * 2007-08-08 2012-07-31 Clear Lam Packaging, Inc. Flexible, stackable container and method and system for manufacturing same
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WO2006017953A1 (fr) 2004-08-18 2006-02-23 Soudronic Ag Procede et dispositif pour le transport d'objets a usiner

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704695A1 (de) * 2011-03-25 2012-09-28 Soudronic Ag Vorrichtung und Verfahren zur Herstellung von Aufreissdeckeln.
WO2012129710A1 (fr) 2011-03-25 2012-10-04 Soudronic Ag Dispositif et procédé pour la fabrication de couvercles à ouverture par arrachage
CN103459061A (zh) * 2011-03-25 2013-12-18 苏德罗尼克股份公司 撕去盖的制造设备和方法
CN103459061B (zh) * 2011-03-25 2015-11-25 苏德罗尼克股份公司 撕去盖的制造设备和方法
US9308712B2 (en) 2011-03-25 2016-04-12 Soudronic Ag Apparatus and method for manufacturing tear-off lids
WO2012143322A1 (fr) * 2011-04-20 2012-10-26 Crown Packaging Technology, Inc. Procédé pour former une fermeture de métal
US9968983B2 (en) 2011-04-20 2018-05-15 Crown Packaging Technology, Inc. Method for forming a metal closure

Also Published As

Publication number Publication date
PT2208554E (pt) 2012-05-30
CH700257A1 (de) 2010-07-30
EP2208554A3 (fr) 2011-02-16
ATE548138T1 (de) 2012-03-15
CH700263A1 (de) 2010-07-30
EP2208554B1 (fr) 2012-03-07
US20100183406A1 (en) 2010-07-22
ES2379859T3 (es) 2012-05-04

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