EP0221842B1 - Orifice verseur dans un couvercle d'un conteneur avec opercule arrachable et fabrication de cet orifice - Google Patents

Orifice verseur dans un couvercle d'un conteneur avec opercule arrachable et fabrication de cet orifice Download PDF

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Publication number
EP0221842B1
EP0221842B1 EP86810401A EP86810401A EP0221842B1 EP 0221842 B1 EP0221842 B1 EP 0221842B1 EP 86810401 A EP86810401 A EP 86810401A EP 86810401 A EP86810401 A EP 86810401A EP 0221842 B1 EP0221842 B1 EP 0221842B1
Authority
EP
European Patent Office
Prior art keywords
opening
rolled flange
flange
pull tab
container cover
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
EP86810401A
Other languages
German (de)
English (en)
Other versions
EP0221842A1 (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 AT86810401T priority Critical patent/ATE47818T1/de
Publication of EP0221842A1 publication Critical patent/EP0221842A1/fr
Application granted granted Critical
Publication of EP0221842B1 publication Critical patent/EP0221842B1/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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/08—Flexible adhesive strips adapted to seal filling or discharging apertures
    • 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
    • B21D51/383—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures scoring lines, tear strips or pulling tabs
    • 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
    • B65D2517/0001—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
    • B65D2517/0088—Foil-like, e.g. paper or cardboard with plastic overmoulded onto foil
    • 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
    • B65D2517/501—Details of flexible tape or foil-like material with the tape, or one layer thereof, being folded to cover both the top and bottom of 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
    • B65D2517/5032—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
    • B65D2517/504—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

  • the present invention relates to a method for producing a calibrated pouring opening in a container lid according to the preamble of claim I.
  • the invention further relates to a container lid for a container with a tear tab according to the preamble of claim 5.
  • EP-A 1 0 090 057 mentioned in the search report relates to a dimensionally stable sealing cover made of sheet metal for sterilizable cans with a fastening ring on which a membrane part is sealed.
  • the sealing surface is formed from the folded-back edge area containing the cut edge for the central opening and a radially outer ring surface on the fastening ring.
  • the cut edge should be covered airtight by the sealing connection to the outside through the cover membrane.
  • the edge which is at risk of corrosion, is not coated directly, so that when it is manufactured or after the membrane cover has been torn open, substances reaching the unprotected edge, e.g. Citrus juices, generate corrosion immediately and can contaminate the contents after a short time.
  • the known cover is not suitable for being produced from a non-dimensionally stable composite material.
  • GB-A 2 022 474 which is also mentioned in the search report, also relates to a dimensionally stable aluminum or tinplate cover ring which is protected with an extremely thin corrosion protection layer in practice.
  • the sharp cutting edge is folded outwards for protection against corrosion by the product.
  • the edge remains completely unprotected even after a cover membrane has been sealed and is exposed to corrosion caused by air humidity or contents which have escaped during filling.
  • the object of the present invention is now to provide a calibrated, i.e. To create a precisely dimensioned pouring opening with any cross-sectional shape for a container, the edges of which are protected against corrosion by the filling material.
  • Another object of the invention is to provide a pouring spout which allows a reclosure to be inserted after tearing, e.g. in the form of a plastic part or a deformed pull tab, which itself serves as a reclosure.
  • the method according to the invention succeeds in punching out the pipe opening and forming a roll flange in two work steps on the one hand and sealing the edge of the roll flange with the plastic applied to the lid against corrosion, flattening the flange and at the same time flattening a predetermined one Maintain cross-section of the finished opening.
  • a strip 5 of a multilayer material wound on a roll 3 is conveyed step by step through a first work station 7, in which a raw opening 9 is punched out of the strip 5 and at the same time a bead 11 is produced along the finished opening 99.
  • the cross section of the finished opening 99 is fixed with a heated calibration tool and, at the same time, the flare 11, which is initially circular in cross section, is flattened, until the plastic film 15 melts on the lid 1 by heating and between the Root 17 of the flange 11 and the cutting edge 19 is pushed out at the end of the flange 11 and there covers the cutting edge 19 with plastic.
  • a tear-open flap 21 is sealed onto the finished opening 99 prepared in the manner described along the sealing surface A formed during the flattening, which of
  • a roll 25 in a carrier belt 27 is conveyed under a sealing tool 29 into the work station 19.
  • the tear tabs 21 could of course also be fed individually.
  • the tools of the three work stations 7, 13, 18 can be arranged in a single press 31 or a single multiple tool, of which only the upper 33 and the lower cheek 35 are indicated in FIG. 1.
  • the semi-finished opening 9 shown in FIG. 2 after the first operation has a diameter D that is larger than the calibrated diameter d after the second operation.
  • the edge 19 does not touch the root 17, i.e. the flange 11 is not closed because the thin aluminum layer 37 serving as a light and vapor barrier in the strip 5 is not able to cancel out the restoring force emanating from the plastic coatings 39 on the outside and 15 on the inside and completely rolls up the flange 11 to keep.
  • the annular sealing surface A has been created by compressing the flange 11 and the diameter has been reduced to d.
  • the width A of the sealing surface on the flange 11 can be influenced during calibration. It is thus possible to produce sealing surfaces A of different widths by choosing the diameter d of the calibration tool.
  • the plastic coating 15, which forms the top of the lid 1 and comes to rest inside the flange 11, is melted inside the flange 11 and has completely covered the edge 19 when it swells out, so that emerging contents cannot cause corrosion of the aluminum layer 37.
  • the flange 11 sealed in this way essentially no longer changes its geometrical shape when the tear-open tab 21 is sealed, so that a closure for reclosing can be inserted into the now calibrated finished opening 99, depending on the tear-open of the tab 21.
  • a flat tear-open tab 21 is sealed, the coating 43 of which forms a secure but peelable connection with the plastic layer 39 forming the sieve surface A.
  • the coating 43 of which forms a secure but peelable connection with the plastic layer 39 forming the sieve surface A is also a good peelable connection with the tear-open tab 21, which, however, is less adhesive than the connection with the layer 39.
  • a plastic part can be used as a closure for reclosing the finished opening, which separately is supplied with the container.
  • a tear-open tab 21 with a closure part 20 can also be used.
  • the tear-open tab 21 with the closure part 20 can also consist of a composite material, the thickness of the aluminum and plastic layer being chosen so large that sufficient inherent stability can be achieved which ensures repeated insertion into the finished opening 99. If a very thin, deformed tear tab 21 serving only for the tight closure is used, a plastic reclosure can be inserted or inserted into the tear tab 21 in the area of the finished opening 99 before sealing. It is also possible, when the tear-open tab 21 is sealed, to press the central part, which is above the finished opening 99, downward by means of a stamp and thus form the closure part 20.
  • the finished opening 99 can have a cross-section other than round. Triangular cross sections are also particularly suitable, since they can be easily opened if the tear-open tab 21 is pulled up over a corner and peeled off from the seal (FIG. 6).
  • the outer shape of the cover I is insignificant for the invention, since it is only punched out of the strip 5 after completion of the closure and - if necessary - provided with an edge 45.
  • a synthetic resin laminating adhesive or a primer can be used as a binder for the aluminum layer.
  • the tear tab 21 can be made, for example, from the following composite material:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Packages (AREA)

Claims (11)

1. Procédé de fabrication d'un orifice verseur terminé dans un couvercle d'un conteneur constitué en aluminium formant une barrière contre la lumière et les gaz et en une matière synthétique constituant des couches de protection et de scellement, avec un bord de coupe protégé contre la corrosion le long de l'ouverture brute estampée, caractérisé en ce que
a) l'ouverture brute (9) est estampée,
b) un collet roulé (11) est réalisé le long de l'ouverture brute (9) de manière que le bord de coupe (19) repose directement ou presque sur la racine (17) du collet roulé (11),
c) le collet roulé (11) est pressé à plat dans un poste de calibrage (13) et une ouverture terminée calibrée et définie avec précision (99) est réalisée, et
d) le collet roulé (11) est aplati jusqu'à ce que la couche de protection (15) appliquée sur le couvercle (1) soit refoulée depuis l'intérieur du collet roulé (11) jusqu'entre le bord de coupe (19) et la racine (17) de manière que le bord (19) soit recou- vert par la couche de protection refoulée (15) et soit scellé et protégé contre la corrosion.
2. Procédé selon la revendication 1, caractérisé en ce que l'estampage de l'ouverture brute (9) et la réalisation du collet roulé (11) sont effectués par un premier outil dans le premier poste de travail (7) et le calibrage, l'aplatissement et le scellement du bord de coupe (19) sont réalisés par un second outil au second poste de travail (13).
3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'un opercule arrachable (21) est scellé sur le collet roulé aplati (11) dans un troisième poste de travail (18), lequel opercule (21) est amené soit dans une bande de support (27) soit individuellement vers l'ouverture terminée (99).
4. Procédé selon la revendication 3, caractérisé en ce que lors du scellement de l'opercule arrachable (21) sur le collet roulé (11), la partie centrale de l'opercule arrachable (21) qui se trouve sur l'ouverture terminée (99) est pressée vers le bas et déformé de manière à déterminer son élément de fermeture enfonçable.
5. Couvercle de conteneur en aluminium pour constituer une barrière contre la lumière et contre les gaz et en matière synthétique pour constituer des couches de protection et de scellement, destiné à conteneur comprenant un opercule arrachable scellé sur lui au-dessus d'un orifice verseur ou permettant de boire muni d'un collet roulé, caractérisé en ce que la section de l'orifice verseur terminé (99) présente une section calibrée, le collet roulé (11) présente au moins sur son côté externe une surface de scellement plane (A) et le bord de coupe (19) de l'ouverture brute (9) est recouverte par le matériau de la couche de matière synthétique (41) qui a été refoulée de l'intérieur du collet (11) lors de l'aplatissement de celui-ci.
6. Couvercle de conteneur selon la revendication 5, caractérisé en ce que le bord de coupe (19) est relié à la racine (17) du collet roulé (11) par le matériau provenant de la couche de matière synthétique (41).
7. Couvercle de conteneur selon la revendication 5 ou 6, caractérisé en ce que l'opercule arrachable (21) est relié de façon pelable au collet roulé (11) le long de la surface de scellement (A).
8. Couvercle de conteneur selon la revendication 7, caractérisé en ce que l'opercule arrachable (21) est relié de la surface de la couche de matière synthétique (15) formant le couvercle (1) de façon à pouvoir être facilement pelé.
9. Couvercle de conteneur selon l'une quelconque des revendications 5 à 8, caractérisé en ce que la partie centrale (20) de l'opercule arrachable (21) pénètre sous forme d'une cuvette dans la région de l'ouverture terminée (99).
10. Couvercle de conteneur selon la revendication 9, caractérisé en ce qu'au moins la couche (99) formant le côté inférieur du couvercle (1) est susceptible d'être scellée à chaud, et l'autre couche (15) est constituée en une matière synthétique thermoplastique.
11. Couvercle de conteneur selon la revendication 9 ou 10, caractérisé en ce qu'un élément en matière synthétique est inséré dans la partie en forme de cuvette (20) de l'opercule arrachable (21).
EP86810401A 1985-10-04 1986-09-04 Orifice verseur dans un couvercle d'un conteneur avec opercule arrachable et fabrication de cet orifice Expired EP0221842B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86810401T ATE47818T1 (de) 1985-10-04 1986-09-04 Ausgussoeffnung in einem behaelterdeckel mit aufreisslasche und herstellung dieser oeffnung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4293/85 1985-10-04
CH429385 1985-10-04

Publications (2)

Publication Number Publication Date
EP0221842A1 EP0221842A1 (fr) 1987-05-13
EP0221842B1 true EP0221842B1 (fr) 1989-11-08

Family

ID=4273396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86810401A Expired EP0221842B1 (fr) 1985-10-04 1986-09-04 Orifice verseur dans un couvercle d'un conteneur avec opercule arrachable et fabrication de cet orifice

Country Status (3)

Country Link
EP (1) EP0221842B1 (fr)
AT (1) ATE47818T1 (fr)
DE (1) DE3666792D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5142512B2 (ja) * 2006-12-04 2013-02-13 北海製罐株式会社 缶蓋
FR3072660B1 (fr) * 2017-10-20 2019-11-22 Ardagh Mp Group Netherlands B.V. Couvercle pour boite de conserve metallique, comprenant un anneau metallique et membrane pelable thermoscellee
JP7169521B2 (ja) * 2019-02-28 2022-11-11 トヨタ自動車株式会社 密閉型電池および組電池

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849164A (en) * 1955-12-16 1958-08-26 William C Weisgerber Dispensing cans
US3547305A (en) * 1968-11-15 1970-12-15 Continental Can Co Easy opening container
CH563284A5 (fr) * 1972-05-20 1975-06-30 Hesser Ag Maschf
CH629983A5 (de) * 1978-06-06 1982-05-28 Alusuisse Verfahren zur herstellung von deckelringen fuer konservendosen.
US4332846A (en) * 1980-01-28 1982-06-01 National Distillers & Chemical Corp. Can cover
CH654542A5 (de) * 1982-04-05 1986-02-28 Sandherr Packungen Ag Verschlussdeckel fuer sterilisierbare dosen.
DE3321572A1 (de) * 1983-06-15 1984-12-20 Robert Bosch Gmbh, 7000 Stuttgart Behaelterdeckel mit oeffnungseinrichtung

Also Published As

Publication number Publication date
EP0221842A1 (fr) 1987-05-13
DE3666792D1 (en) 1989-12-14
ATE47818T1 (de) 1989-11-15

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