EP1036740B1 - Verfahren zum Herstellen einer Getränkedose mit einer Schutzfolie - Google Patents

Verfahren zum Herstellen einer Getränkedose mit einer Schutzfolie Download PDF

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Publication number
EP1036740B1
EP1036740B1 EP00104644A EP00104644A EP1036740B1 EP 1036740 B1 EP1036740 B1 EP 1036740B1 EP 00104644 A EP00104644 A EP 00104644A EP 00104644 A EP00104644 A EP 00104644A EP 1036740 B1 EP1036740 B1 EP 1036740B1
Authority
EP
European Patent Office
Prior art keywords
film
protective film
wall
tab
manufacturing
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.)
Expired - Lifetime
Application number
EP00104644A
Other languages
English (en)
French (fr)
Other versions
EP1036740A2 (de
EP1036740A3 (de
Inventor
Guiseppe Nicola
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.)
COZZO, GIAMPIERO
COZZO, GIOVANNI
NICOLA, GIUSEPPE
Original Assignee
Cozzo Giampiero
Cozzo Giovanni
Nicola Giuseppe
Poletti Mauro
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 Cozzo Giampiero, Cozzo Giovanni, Nicola Giuseppe, Poletti Mauro filed Critical Cozzo Giampiero
Publication of EP1036740A2 publication Critical patent/EP1036740A2/de
Publication of EP1036740A3 publication Critical patent/EP1036740A3/de
Application granted granted Critical
Publication of EP1036740B1 publication Critical patent/EP1036740B1/de
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
    • B65D17/4012—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 partially 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
    • 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
    • B65D2517/0098—Means for preventing dust contacting pouring opening, e.g. a cover over the tear panel

Definitions

  • the present invention relates to a method of manufacturing a drinks can with a tab opening, in particular of the type known as a "stay-on-tab", that is with a metal tab designed to fold over inside the can upon. opening.
  • Cans of this type have the advantage of keeping the opening tab attached to the can once this has been opened. This prevents the metal tabs from littering the environment.
  • cans of this type have one particularly serious disadvantage from a health and hygiene point of view, since by coming into contact with the liquid inside the can, the metal tab can transmit to the drink dirt and impurities which may have been deposited on the upper surface of the can during transport and storage, either before or after being purchased by the consumer.
  • US-A-5 647 497 discloses a can for beverages of a stay-on-tab type, including:
  • the general object of the present invention is to overcome the aforesaid disadvantage by providing a can for drinks, or other liquids for human consumption, with optimum protection of the opening area so as to prevent any dirt which might have accumulated on the top surface of the can from being transferred to the liquid it contains.
  • a further object of the invention is to apply a protective element to the lid of a can in a simple, quick and inexpensive step during the normal manufacturing and bottling of the beverage.
  • a can 10 of substantially known structure of a type commonly used for beverages or other liquids for human consumption, includes a side wall 11, a bottom (not shown since it is a structure well known in the art and, in any case, is not affected by the innovative concepts of the invention described here) and a top closure wall or cover 12 with a pouring aperture 13 formed therein which is opened by pulling a ring 14.
  • the can is of a type known in the art as a "stay-on-tab" type, in which, when the ring 14 is pulled upwards, a tab portion 12a of the wall 12 bends into the can, partly detaching itself from the rest of the wall 12 and opening the aperture 13.
  • a removable protective film 15 preferably made of at least one layer of aluminium or another material which can be made into a film able to adhere to the metal surface to which it has been applied but then to be removed easily at the time of opening the can.
  • the film 15 is preliminarily coupled to the sheet metal constituting the top wall 12.
  • the film 15 is fixed to the metal upper or external surface of the wall 12 during production thereof, for example during the rolling step, or during other steps in the working of the metal disc constituting the said wall 12, so as to obtain a cover or top closure wall 12 already provided with a protective film 15 before the can is filled and closed at the top with the top wall 12.
  • the film 15 may be of various sizes, from a maximum which substantially covers the entire outer surface of the lid 12 to a minimum which covers just the tab portion 12a.
  • the outline of the film 15 is shown by a broken line to indicate that this film 15 can extend as far as desired over the wall 12, beyond the pouring aperture 13.
  • the can 10 has an element 16, also preferably made of aluminium foil, for gripping and removing the film 15.
  • Figures 1-6 illustrate various embodiments in which the gripping element 16 and the film 15 are constituted by respective separate elements and thus have appropriate sealing or fixing means 17 for securing the element 16 to the film 15.
  • the contact portions of the gripping element and the film could be heat bonded, or the elements 15 and 16 could be secured by any other method; these methods, which could vary according to the type of material chosen for the film 15 and for the element 16, will be well known to those skilled in the art and are thus not described here.
  • the attachment means 17 between the film 15 and the element 16 are arranged outside the pouring aperture 13, along the border thereof.
  • the film 15 could advantageously have tear lines 18 along those in the metal wall 12 at the site of the pouring aperture 13, in order to encourage the portion of film covering the tab portion 12a to become detached from the rest of the film, as will be explained more clearly below.
  • attachment means 19 are provided to secure the gripping element 16 to the top wall 12 of the can.
  • the attachment means 19 between the gripping element 16 and the wall 12 are preferably arranged outside the attachment means 17 between the film 15 and the gripping element 16, around the edge of the pouring aperture 13.
  • the gripping element 16 and the wall 12 may be joined by any method able to prevent them from becoming detached accidentally.
  • the gripping element 16 has a handling portion 20 which projects slightly from the can, making it easier to lift and remove the film 15.
  • the attachment 17 between the film 15 and the gripping element 16 can also extend partially to the metal surface of the top wall 12 so as to make the film adhere better to the can.
  • the attachment 19 between the gripping element 16 and the wall 12 of the can may also be attached, at least at a few points (according to the size of the film covering the lid 12) to the said protective film 15.
  • the gripping element 16 tears with it the portion of film 15 covering the metal tab 12a over the pouring aperture.
  • the metal tab 12a has been protected from contact with dust and any other impurities and can thus be immersed without risk in the drink when the opening ring 14 is pulled.
  • the attachment means 19 between the gripping element 16 and the wall 12 ensure that the element 16 and the film 15 which is secured to it remain secured to the can once it has been opened, preventing them from littering the environment.
  • the shape of the gripping element 16 and its arrangement on the can may vary according to specific requirements. For example, in the embodiment illustrated in Figure 3, the gripping element covers the opening ring 14, thus obliging the consumer to remove the film 15 so as to reach the ring 14. This ensures that the consumer cannot open the can without removing the protective film 15 from the opening, thereby contaminating the drink with any impurities which might be present on the outer surface of the film.
  • the removable portion of the film 15 can extend beyond the pouring apertures 13, conceivably so as to coincide with the entire film 15.
  • the gripping element 16 may be more securely attached to the film 15 by folding one end 21 of the handling element over the site of the tab 12a, and fixed to the film 15 with a further attachment area 22.
  • the attachment means 17, 19 can be made to coincide with any raised portions or ribs which are to be found on the lid surface of the upper part of the can.
  • the protective film 15 and/or the gripping element 16 may each be constituted by several layers of film coupled together.
  • the gripping element 16 and the protective film 15 may be formed in one piece.
  • the protective film 15 has an appendage 16 which acts as gripping portion.
  • This portion 16 is in a passive position folded onto the top wall 12 of the can during packaging, transport and storage, so that it remains within the perimeter of the lid.
  • the gripping portions 20 - in Figure 1 - and 16 - in Figure 7 - are shown slightly raised only for the sake of clarity).
  • the gripping portion 16 is then raised, as shown by the broken line in Figure 7, to expose the tab portion 12a and the edge region of the wall 12 adjacent the pouring aperture 13 upon opening the can.
  • FIGs 7 and 8 there is shown a variant in which the protective film 15 covers substantially the entire upper or external surface of the wall 12, extending to the perimetral edge 23 thereof.
  • the attachment means 19 securing the film 15 to the top wall 12 are indicated schematically in areas near the perimeter 23 and/or on it.
  • the film 15 has a central aperture or gap 24 around the opening ring 14 and the means 25 fixing it to the wall 12, this aperture making it possible to lift the film 15 beyond the area of the ring-pull 14 without the latter obstructing this movement.
  • Figure 9 shows a further variant in which the film 15 covers only the tab 12a and has a gripping element 16, preferably formed in one piece with the film, folded horizontally into a passive position for transport and storage.
  • the film 15 is attached at 19 to the upper, external surface of the wall 12, near the region where the tab portion 12a is joined to the rest of the wall 12, in such a way that when the film 15 is lifted it is moved sideways, as shown by the broken line, and thus does not obstruct the liquid being poured from the opening.
  • the film 15 could cover only the portion of the tab 12a which is immersed in the liquid when the can is opened, but not the central or upper portion of the tab, that is the portion nearest the centre of the top wall 12.
  • the film 15 is preferably attached - directly or by means of a gripping element 16 securely attached to the film 15 - to the can, in particular to the top wall 12, so as to remain secured to the can even once this has been opened and to avoid being dispersed as litter, separately from the can.
  • the extent of the attachment between the can and the film (and/or the gripping element 16) may vary according to requirements: it could consist of dots or dashes, for example, that is be limited to a few areas of contact between the film (and/or the gripping element 16) and the top wall 12, along the perimetral edge 23, for example; on the other hand, the attachment could be uniform and continuous.
  • the type of attachment may vary according to the material chosen for the film 15 and could include, though not exclusively, the following types of attachment: heat bonding, ultrasonic welding, heat sealing, gluing by means of a comestible adhesive, used as a self-adhesive layer.
  • the film remains secured to the upper wall of the can from the moment it is produced, preventing any impurities from being deposited, or even condensation from forming, on those portions of the outer surface of the can that generally come into contact with the beverage when the can is opened and the contents thereof are drunk or poured.
  • the film 15 could constitute an ideal surface on which to print the words or graphics which are usually printed on the top covers of cans to indicate the bottling plant. This would mean that the manufacturers of the covers would no longer be obliged to use different presses to make covers for different plants.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Closures For Containers (AREA)

Claims (3)

  1. Verfahren zum Herstellen einer Dose mit verankerter Aufreißlasche, wobei das Verfahren folgende Schritte enthält:
    Vorsehen eines zylindrischen Körpers (11),
    Vorsehen einer oberen Verschlusswand (12), die einen Aufreißlaschenteil (12a) besitzt, der dadurch in das Innere der Dose gefaltet werden kann, dass an einer Öffnungseinrichtung (14) gezogen wird,
    Vorsehen eines Schutzfolienelements (15), um zumindest einen Teil der äußeren Fläche des Aufreißlaschenteils (12a) zu bedecken und an diesem zu haften, wobei das Folienelement (15) eine Greifeinrichtung (16, 20) besitzt, die daran befestigt ist, um die Fläche vor dem Öffnen der Dose frei zu legen;
    dadurch gekennzeichnet, dass das Verfahren folgenden Schritt enthält:
    Verbinden des Schutzfolienelements (15) mit der oberen Wand (12) während deren Fertigung, bevor die Dose gefüllt und oben mit der oberen Wand (12) verschlossen wird.
  2. Herstellungsverfahren gemäß Anspruch 1, dadurch gekennzeichnet, dass der Verbindungsschritt aus einer Gruppe ausgewählt wird, die folgende Schritte enthält: Heißverkleben, Ultraschallschweißen, Heißschweißen, Kleben mit Hilfe eines Lebensmittelklebers, der als selbstklebende Schicht verwendet wird.
  3. Herstellungsverfahren gemäß Anspruch 1, dadurch gekennzeichnet, dass der Verbindungsschritt während eines Walzschritts oder während anderer Schritte bei der Bearbeitung der Metallscheibe ausgeführt wird, die die obere Wand (12) bildet, um einen Deckel oder eine obere Abschlusswand (12) zu erhalten, die bereits mit einem Schutzfolienelement (15) versehen ist, bevor die Dose gefüllt und oben mit der oberen Wand (12) verschlossen wird.
EP00104644A 1999-03-05 2000-03-03 Verfahren zum Herstellen einer Getränkedose mit einer Schutzfolie Expired - Lifetime EP1036740B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITAL990001U 1999-03-05
IT1999AL000001U IT249001Y1 (it) 1999-03-05 1999-03-05 Lattina per bevande con elemento di protezione della zona di aperturaa salvaguardia igienico/ambientale.

Publications (3)

Publication Number Publication Date
EP1036740A2 EP1036740A2 (de) 2000-09-20
EP1036740A3 EP1036740A3 (de) 2002-07-31
EP1036740B1 true EP1036740B1 (de) 2003-09-03

Family

ID=11333460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00104644A Expired - Lifetime EP1036740B1 (de) 1999-03-05 2000-03-03 Verfahren zum Herstellen einer Getränkedose mit einer Schutzfolie

Country Status (5)

Country Link
EP (1) EP1036740B1 (de)
AT (1) ATE248755T1 (de)
DE (1) DE60004905T2 (de)
ES (1) ES2206096T3 (de)
IT (1) IT249001Y1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1638851A4 (de) * 2003-06-09 2008-06-11 Charles Chang Getränkedose mit laminatoberteil
NL2004639C2 (en) * 2010-04-29 2011-11-01 Coca Cola Entpr Nederland B V Beverage can with a pull tab an element provided near the pull tab.
DE102015009702B3 (de) * 2015-07-30 2016-12-29 FOLID GmbH Getränkedose mit Schutzfolienlagerraum
DE102016010465A1 (de) 2016-08-31 2018-03-01 Unipress Etiketten & Schilder e.K. Schutzelement zum Abdecken des ausgießseitigen Endes eines Getränkebehälters
DE102016011941B3 (de) * 2016-10-07 2017-10-19 Unipress Etiketten & Schilder e.K. Vorrichtung und Verfahren zum Zuschneiden einer Schutzfolie
DE102016014511A1 (de) 2016-12-07 2018-06-07 Unipress Etiketten & Schilder e.K. Vorrichtung zum Erzeugen eines bahnförmigen Vorprodukts, aus dem Schutzkappen für Behälter herstellbar sind

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6513594A (en) * 1994-04-13 1995-11-10 Young Chul Jung Beverage can with sanitary top cover
GB9521528D0 (en) * 1995-10-20 1995-12-20 Artform Int Ltd Improvements in or relating to drink containers
US5647497A (en) * 1996-02-21 1997-07-15 Labbe; Andre Protective removable cover for beverage container
GB9720804D0 (en) * 1997-10-01 1997-12-03 Callewaert George Ring pull seal

Also Published As

Publication number Publication date
ES2206096T3 (es) 2004-05-16
EP1036740A2 (de) 2000-09-20
DE60004905D1 (de) 2003-10-09
IT249001Y1 (it) 2003-03-06
ATE248755T1 (de) 2003-09-15
DE60004905T2 (de) 2004-07-15
EP1036740A3 (de) 2002-07-31
ITAL990001U1 (it) 2000-09-05

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