EP0221843B1 - Couvercle en matériau laminé présentant une ouverture fermée par une bande d'arrachage ainsi que le procédé pour sa fabrication - Google Patents

Couvercle en matériau laminé présentant une ouverture fermée par une bande d'arrachage ainsi que le procédé pour sa fabrication Download PDF

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Publication number
EP0221843B1
EP0221843B1 EP86810402A EP86810402A EP0221843B1 EP 0221843 B1 EP0221843 B1 EP 0221843B1 EP 86810402 A EP86810402 A EP 86810402A EP 86810402 A EP86810402 A EP 86810402A EP 0221843 B1 EP0221843 B1 EP 0221843B1
Authority
EP
European Patent Office
Prior art keywords
lid
opening
seal
tear
sealed
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
Application number
EP86810402A
Other languages
German (de)
English (en)
Other versions
EP0221843A1 (fr
Inventor
Horst Zumsteg
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.)
Amcor Flexibles Rorschach AG
Original Assignee
Alcan Rorschach 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 Alcan Rorschach AG filed Critical Alcan Rorschach AG
Priority to AT86810402T priority Critical patent/ATE44008T1/de
Publication of EP0221843A1 publication Critical patent/EP0221843A1/fr
Application granted granted Critical
Publication of EP0221843B1 publication Critical patent/EP0221843B1/fr
Expired 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
    • B65D17/50—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
    • 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
    • B65D17/505—Flexible tape or foil-like material applied to the external and internal part of the container wall
    • 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
    • B65D2517/008—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
    • B65D2517/5024—Material
    • B65D2517/5027—Single layer
    • 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
    • B65D2517/5064—Details of preformed openings the punched-out part of the preformed opening is re-inserted in the preformed opening and forming part of the tear 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
    • B65D2517/5072—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 lid made of a composite material with an opening closed by a pull tab according to the preamble of patent claim 1.
  • the invention further relates to a method for producing a lid with an opening closed by a pull tab according to the preamble of claim 8.
  • Composite material lid i.e. Known from several layers, in particular thermoplastics, in which an aluminum foil is embedded as gas and light protection and which have a drinking or pouring opening.
  • the aluminum of the aluminum foil When the drinking opening is punched out, the aluminum of the aluminum foil is exposed along the punched edge and can come into contact with the filling material. In the case of aggressive filling goods, such as fruit juices, the aluminum can corrode and lead to contamination of the contents.
  • the invention seeks to remedy this.
  • the object of the invention is to create a pouring and drinking opening, the edges of which are protected against corrosion and in which the part of the lid which closes the drinking opening can be reused as a closure pin after being torn open.
  • the invention solves these problems with a lid according to the characterizing features of patent claim 1 and by a method for its production according to the characterizing features of patent claim 8.
  • the lids can be produced in a continuous production process from band-shaped material, the lid blanks or the blanks provided with drinking or pouring openings and reclosure being stored rolled up until they are applied to the container can be.
  • the drinking opening can be closed again and again with the integrated locking pin, because the sealing edge remaining on the inside of the lid and reinforcing the edge of the opening gives it a stiffening.
  • the cut edge along the opening can be safely covered against the filling material by the edge overlapping the opening.
  • the collar-shaped extension of the closure and the edge on the closure enable the closure to be held securely within the opening if it is re-attached to the lid after the first opening.
  • the edge set back or offset from the surface of the closure by the thickness of the cover enables the tear-open tab to be sealed to the cover and the surface of the closure at the same time.
  • the lid 1 shown in Figure 1 on a container 29 (shown in broken lines) with a reclosable opening 3 consists of aluminum or a composite material which, for example as gas and light protection, an aluminum foil 5, as a sealing layer 7 a heat-sealable plastic, such as Surlyn by Dupont de Nemour, and have a tear-resistant plastic as cover layer 9.
  • a plastic insert 13 is inserted which, after being torn open, forms both the reclosure 15, short closure 15, and the reinforcing edge 17, short edge 17, in the the closure 15 can be inserted.
  • the edge 17 is firmly sealed from below with the lid.
  • a thin tear-open tab 19 is inseparably connected to both the lid 1 and the closure 15. So that a flat sealing surface is created, the edge 17 is set back by the thickness e of the cover 1 relative to the surface of the closure 15.
  • the three parts can be connected by mutual sealing.
  • the closure 15 and the edge 17 are connected by a web 21, which serves as a predetermined breaking point and breaks when the closure 15 is lifted with the tear-open tab 19, which preferably has a tab 23 that can be easily lifted off the lid 1 at one point.
  • the thickness of the web 21 must be dimensioned; it is therefore in the range of hundredths of a millimeter up to a few tenths of a millimeter.
  • FIG. 2 shows an enlarged representation of a plastic insert 13 with a solid edge 17 and a closure 15 with a collar 25 directed towards the interior of the container.
  • the diameter D of the collar 25 on the free edge 27 is larger than the diameter d of the opening 3 or the diameter of the plastic insert 13 at the predetermined breaking point.
  • the diameter D of the collar 25 preferably increases toward the free edge 27.
  • a bead 31 is attached to the collar 25 according to FIG. 3, the diameter E of which is larger than that Diameter d of the opening 3.
  • the bead 31 can run completely; it can also be attached only in sections, e.g. on the "narrow sides" of the closure 15 (see FIG. 6).
  • the web 21 serving as a predetermined breaking point and the edge 17 are designed to be significantly finer in this example than the closure 15.
  • the plastic inserts 13 described above with integrated reclosure 15 and reinforcing edge 17 for snapping are very simple and inexpensive to manufacture in Spritzgussver.
  • the subsequent assembly can be carried out in a continuous process with the material for the cover 1 and the tear-open tabs 19, which is supplied in the form of a tape, using conventional machines.
  • the strip-shaped material 2 for the cover 1 which is brought to a punching and punching machine 35, is unwound from a coil 33 and the opening 3 is punched out. Then, again from coil 37, the tear-open tab 19 is punched out and brought from below to the perforated cover 1 and positioned thereon and initially stapled by means of sealing points.
  • the plastic inserts 13 are individually removed from a stack 41 and inserted into the opening 3 and stapled.
  • the plastic insert 13 is sealed along the edge 17 with the sealing layer 7 of the material 2 for the lid 1 and the reclosure 15 with the tear-open tab 19.
  • the tape 2 provided with the ready-to-use closures 13 and the tear-open tabs 19 can now be wound up and delivered to the consumer in tape form or can be fed directly to a punching machine for punching out the cover 1.
  • plastic insert 13 could also be applied first and the tear-open tab 19 sealed with the closure 15 and the cover 1 only afterwards.
  • the tear-open tab 19 is pulled up on the loose tab 23 and peeled off from the lid 1.
  • the seal or adhesive bond between the tear tab 19 and the closure 15 is not detachable. For this reason, the closure 15 is also raised when the tab 23 is pulled up further.
  • the web 21 breaks, i.e. the predetermined breaking point, and the closure 15 remains on the tear tab 19.
  • the edge 17 remains on the inside of the lid 1 and forms a circumferential reinforcement of the opening 3 and at the same time serves as a catch when the closure 15 is pushed back into the opening 3 in order to close the container 29 again.
  • the bead 31 (cf. FIG. 3) can, for example, only be attached along the arcuate sections, so that the closure 15 snaps into place and is held in place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Table Devices Or Equipment (AREA)
  • Packages (AREA)

Claims (9)

1. Couvercle en matériau composite, dans lequel est ménagée une ouverture obturée par une patte à arracher, caractérisé en ce qu'il comporte une pièce rapportée en matière plastique (13) placée par en-dessous dans l'ouverture (3) qui a été découpée à la presse dans le couvercle (1), cette pièce rapportée (13) étant pourvue d'une bordure (17) qui recouvre le bord de l'ouverture (3) et qui est fixée par collage ou par soudage au couvercle (1) au voisinage de l'ouverture (3); en ce qu'il existe une zone de liaison amincie (21), prévue pour définir une ligne de rupture, entre la bordure (17) de la pièce rapportée en matière plastique (13) et la partie centrale de cette pièce constituant le corps d'un obturateur amovible (15); et en ce que la patte d'ouverture à arracher (19) qui recouvre l'ouverture (3) est fixée par-dessus, par collage ou soudage, sur l'obturateur (15) et sur la zone du couvercle (1) qui entoure l'obturateur (15), cette liaison de la patte d'ouverture (19) avec l'obturateur (15) étant indestructible, alors que la patte (19) peut être séparée du couvercle (1) par arrachement.
2. Couvercle conforme à la revendication 1, caractérisé en ce que l'obturateur (15) comporte un corps profilé en collerette (25), disposé tout au long de la zone de liaison amincie (21), et présentant un bord libre (27) en saillie, en regard de la surface du couvercle (1).
3. Couvercle conforme à l'une des revendications 1 ou 2, caractérisé en ce que la bordure (17) est plus épaisse que la zone de liaison (21) à l'endroit prévu pour définir la ligne de rupture.
4. Couvercle conforme à l'une des revendications 1 ou 2, caractérisé en ce que le corps profilé en collerette (25) de l'obturateur est pourvu d'un bourrelet (31) en saillie vers l'extérieur, ce bourrelet (31) étant disposé sur tout le pourtour du corps profilé en collerette, ou seulement sur une partie de ce pourtour.
5. Couvercle conforme à l'une des revendications 2 à 4, caractérisé en ce que le diamètre (d) de l'ouverture (3) est inférieur au diamètre (D) du corps profilé en collerette (25), mesuré à l'endroit du bord libre (27) ou du bourrelet (31).
6. Couvercle conforme à l'une des revendications 1 à 5, caractérisé en ce que la face supérieure de la bordure (17) est en retrait dans le sens de la hauteur par rapport à la face supérieure de l'obturateur (15), d'une valeur égale à l'épaisseur (e) du couvercle (1).
7. Couvercle conforme à l'une des revendications 2, 3 ou 6, caractérisé en ce que le diamètre du corps profilé en collerette (25) diminue progressivement en allant vers le bord libre (27).
8. Procédé pour fabriquer un couvercle comportant une ouverture obturée par une patte à arracher, caractérisé en ce qu'il comporte les phases opératoires suivantes:
a) On prend une bande de matériau composite (2), et on y découpe à la presse une ouverture (3),
b) Par-dessus l'ouverture (3), on fixe par collage ou soudage une patte à arracher (19),
c) Dans l'ouverture (3), on met en place une pièce rapportée en matière plastique (13),
d) On fixe ensemble, par soudage ou par collage, la patte à arracher (19) et la partie centrale de la pièce rapportée en matière plastique (13), qui constitue le corps de l'obturateur (15), et on fixe de même au couvercle (1) la bordure (17) de la pièce rapportée en matière plastique (13).
9. Procédé conforme à la revendication 8, caractérisé en ce qu'on opère sur la bande de matière composite (2) pour réaliser l'ouverture (3) en découpant celle-ci à la presse, pour mettre ensuite en place la pièce rapportée en matière plastique (13) et la patte à arracher (19), et pour les fixer au couvercle (1) et à l'obturateur (15) par collage ou par soudage, avant de découper à la presse le couvercle (1) dans la bande (2).
EP86810402A 1985-10-04 1986-09-04 Couvercle en matériau laminé présentant une ouverture fermée par une bande d'arrachage ainsi que le procédé pour sa fabrication Expired EP0221843B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86810402T ATE44008T1 (de) 1985-10-04 1986-09-04 Deckel aus verbundmaterial mit einer von einer aufreisslasche verschlossenen oeffnung sowie ein verfahren zu dessen herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH429485 1985-10-04
CH4294/85 1985-10-04

Publications (2)

Publication Number Publication Date
EP0221843A1 EP0221843A1 (fr) 1987-05-13
EP0221843B1 true EP0221843B1 (fr) 1989-06-14

Family

ID=4273411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86810402A Expired EP0221843B1 (fr) 1985-10-04 1986-09-04 Couvercle en matériau laminé présentant une ouverture fermée par une bande d'arrachage ainsi que le procédé pour sa fabrication

Country Status (3)

Country Link
EP (1) EP0221843B1 (fr)
AT (1) ATE44008T1 (fr)
DE (1) DE3663925D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013003154B3 (de) * 2013-02-25 2014-01-16 Euro-Cap Gmbh Dosenverschluss
DE102015000914B3 (de) * 2015-01-26 2015-09-24 Euro-Cap Gmbh Dosenverschluss, insbesondere für eine Milchdose

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1389351A (en) * 1971-11-23 1975-04-03 Nat Can Corp Easy opening containers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623628A (en) * 1970-02-04 1971-11-30 Microdot Inc Oil filler plug
EP0038142A1 (fr) * 1980-04-15 1981-10-21 METAL BOX p.l.c. Fermetures pour récipients
US4410101A (en) * 1981-01-12 1983-10-18 Vogt Kuno J Easy opening top closure member assembly for a container
FR2551031B1 (fr) * 1983-08-24 1986-07-04 Alsacienne Aluminium Recipient a ouverture par pelage et procede de production des elements de fermeture de tels recipients

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1389351A (en) * 1971-11-23 1975-04-03 Nat Can Corp Easy opening containers

Also Published As

Publication number Publication date
ATE44008T1 (de) 1989-06-15
DE3663925D1 (en) 1989-07-20
EP0221843A1 (fr) 1987-05-13

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