EP0209031B1 - Boîte, ainsi que le procédé et la membrane pour sa fermeture - Google Patents

Boîte, ainsi que le procédé et la membrane pour sa fermeture Download PDF

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Publication number
EP0209031B1
EP0209031B1 EP86109223A EP86109223A EP0209031B1 EP 0209031 B1 EP0209031 B1 EP 0209031B1 EP 86109223 A EP86109223 A EP 86109223A EP 86109223 A EP86109223 A EP 86109223A EP 0209031 B1 EP0209031 B1 EP 0209031B1
Authority
EP
European Patent Office
Prior art keywords
membrane
wall
tin
cut
edge
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
EP86109223A
Other languages
German (de)
English (en)
Other versions
EP0209031A1 (fr
Inventor
Werner Grabher
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.)
Grabher INDOSA-Maschinenbau AG
Original Assignee
Grabher INDOSA-Maschinenbau 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4246282&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0209031(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Grabher INDOSA-Maschinenbau AG filed Critical Grabher INDOSA-Maschinenbau AG
Priority to AT86109223T priority Critical patent/ATE35246T1/de
Publication of EP0209031A1 publication Critical patent/EP0209031A1/fr
Application granted granted Critical
Publication of EP0209031B1 publication Critical patent/EP0209031B1/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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • 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
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0018—Upper closure of the 43-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0093—Membrane

Definitions

  • the invention relates to a can according to the preamble of claim 1; a method of making the can; a membrane for closing them; and finally a method and a device for producing the membrane.
  • the invention therefore has among other things the task of creating a can of the type mentioned, which avoids the disadvantages mentioned and can be implemented in practice. This succeeds through the measures proposed in the characterizing part of claim 1.
  • a can constructed in this way is easy to manufacture and offers no problems when tearing open, but a smooth and clean covering part.
  • a method is to be created with which the can can be closed in the simplest possible manner, preferably in a single work step, while achieving the desired advantages. This is done by the measures defined in the characterizing part of claim 2.
  • the object of the invention is further to provide a membrane for closing cans or the like.
  • Containers that can be created in one operation and still ensure easy opening by means of suitable predetermined tear points. According to the invention, the aim is achieved by the features described in claim 3.
  • a web in the membrane according to the invention is 3 to 50%, preferably 10 to 15% of the cut long, 3, preferably 6 to about 12, in particular 8 to 10 cuts and webs being provided depending on the diameter of the membrane. Fewer (longer) cuts and / or shorter bars endanger the processability of the membrane when gluing into the can, since the long cuts tend to pull apart. More (shorter) cuts and / or longer bars result in bigger problems when tearing open.
  • the right choice can easily be made by any person skilled in the art, depending in particular on the material thickness and rigidity of the membrane, as well as on the tolerances of the can.
  • the predetermined tear line is above half the height of the wall, e.g. runs in the upper third.
  • they are preferably already pre-bent and / or even weakened in their thickness, at least over a part of their width, so that they form predetermined tear points which, when used in tension, actually maintain the sealing of the covering part tear. It is particularly expedient if the webs have an approximately spindle-shaped cross section, for example by are squeezed or cut to zero thickness at both ends bordering the respective cuts.
  • a deep-drawing die and a die are used, each having a circumferential shear edge for producing the cuts, which are preferably distributed evenly around the circumference is interrupted by recesses.
  • a similar method and device is described in US Pat. No. 3,859,942, but there in a different field (a closure cap intended for closing a bottle from the outside and preformed from thin sheet metal is provided with circumferential cuts in order to unscrew it manually the cap by the consumer tearing off between the Allow cuts remaining webs in the tangential direction).
  • This document therefore does not even correspond to the generic term of the method and device according to the invention and therefore could not offer the inventor any indication of the achievement of the object of the invention.
  • the deep-drawing die 6 has a shaft 7 at the top for clamping in the tool.
  • the stamp itself is a disk-like tool part which contains a drawing radius 12 on the end face 13; the cylindrical drawing edge ends in a shear edge 8. This is arranged in the areas A and can be seen from the associated section (FIG. 2A).
  • the recess 9 is arranged in the regions B. Only the shear edge 8 is interrupted here, namely with a depth of approximately 100 microns and an inclination of 25 to 60 degrees as seen from the longitudinal axis.
  • the width of the recess 9 corresponds to the desired width of a web 4.
  • FIG. 3 shows the die 10. It is an annular tool which has a shear edge 11 on its inside, which may have interruptions, but which are not shown in FIG. 3. This can also be seen from the fact that sections A and B (FIGS. 3A, 3B) are identical.
  • the membrane film 14 which is prepared as a flat disk, lies over the die 10.
  • the hold-down 15, which is guided on the deep-drawing die 6, is designed as a ring.
  • the drawing contour 12 can also be seen here, the shearing edge 8 being shown in FIG. 4 and the interruption thereof being shown by the recess 9 in FIG. 5.
  • FIG. 6 and 7 show the tool in the closed position.
  • the die 10 When starting up, the die 10 first hits the hold-down 15 and immediately surrounds the deep-drawing die 6.
  • the membrane film 14 is now converted into the plate 1, the wall 2 and the flange 3.
  • FIG. 6 shows that the finished membrane is cut open laterally is. This corresponds to point A in FIG. 1.
  • FIG. 7 where the cut 9 has interrupted the cut, this corresponds to FIG. This results in only an offset of the membrane film 14 in the wall 2.
  • the manufacture takes place in such a way that when the tool is closed plate 1, wall 2 and flange 3 are initially formed, at the same time the wall 2 is Z-shaped in cross section and in the final phase of the closing movement by shear edges 8 and 11 the longitudinal slots 5 get cut.
  • shear edges 8 and 11 have only a slight overlap, in the order of 100 to 200 microns. This ensures that the membrane can be produced in one operation, at the same time cutting the longitudinal slots 5 and cranking or kinking the webs 4 and possibly even reducing their cross section, at least in part, thereby forming the desired predetermined crack locations.
  • the conventional membrane according to FIG. 9 in turn suffers from the fact that the adhesion of the two membrane layers in the overlap region (3a, 3i) should be less than in the vertical (21a, 21i) and horizontal (14a, 14i) closure region.
  • the open end face 16 of the completely sealed can 17 according to FIG. 10 (FIG. 10a, FIG. 10b), on the other hand, is encompassed by the now separated, circular flange 3 of the membrane 14.
  • the upper end 19, 19 'of the cylindrical wall 21 is arranged from the lower end 23, 23' of the inner leg of the flange 3 at a small distance a, which is chosen to be just large enough that the previous predetermined breaking points 4 (Fig. 1) are torn. This is usually done under tensile stress a smooth tearing off in contrast to the conventional peeling stress when opening the can, in which, as mentioned at the beginning, the inner leg of the flange 3 can often become frayed.
  • a membrane other than the one according to the invention if it only has a predetermined cracking point running over the circumference of its cylindrical wall part, can also be used to produce the can according to the invention, although the membrane according to the invention is preferred because of its ease of manufacture.
  • the heat-sealing layer 24 connects during the closing and tearing-off process to the inner can coating 18, of which an undamaged peripheral strip 22 is retained after the webs 4 (FIG. 1) have been torn off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Diaphragms And Bellows (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Glass Compositions (AREA)
  • Prostheses (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Claims (7)

1. Boîte constituée par un corps (17) doté d'un revêtement intérieur (18) et d'au moins une ouverture fermée au moyen d'une membrane (14) ayant un col relevé (21 ) liée de manière étanche au revêtement intérieur (18) par une couche (24) d'agent de scellement ou d'adhésif, le bord supérieur (19) du col (21) se terminant à distance du bord d'extrémité (16) du corps (17) et une pièce de recouvrement (3) en forme d'anneau circulaire succédant à ce bord supérieur (19), à distance (a) de celui-ci, en laissant subsister sur le revêtement intérieur (18) une band annulaire intacte et non re- couverte (22), cette pièce de recouvrement étant rabattue par-dessus le bord d'extrémité (16) du corps (17), caractérisée par le fait que le bord supérieur (19) du col (21 ) et le bord inférieur intérieur (23) de la pièce de recouvrement (3) sont coupés sur 70% à 99% de leur pourtour et sont rompus sur 30% à 1 % de leur pourtour.
2. Procédé de fabrication d'une boîte selon revendication 1, en utilisant une membrane dont la partie de paroi cylindrique présente une ligne de rupture périphérique, caractérisé par le fait que l'on maintient le rebord (3) de la membrane (14) sur le bord d'extrémité (16) de la paroi (17) de la boîte pendant que l'on enfonce, par exemple à l'aide d'un poinçon, le fond (1) de la membrane (14) dans la boîte (17), cela d'une course (a) telle que les points d'affaiblissement (4) pour rupture soient juste rompus.
3. Membrane faite d'une feuille, de préférence épaisse d'environ 40 à 60 microns, pour fermer des récipients du genre boîte ayant diverses sections, constituée par un fond auquel se raccorde une paroi latérale (2) destinée au contact avec la paroi intérieure (18) de la boîte, et par un rebord (3) dépassant radialement de celle-ci, caractérisée par une alternance d'incisions (5) aménagées le long d'une ligne périphérique dans la paroi (2) d'épaisseur sensiblement uniforme et de parties pleines (4), chaque partie pleine (4) présentant une largeur de 3 à 50%, de préférence 10 à 15%, de la longueur d'une incision (5).
4. Membrane selon revendication 3, caractérisée par le fait que les parties pleines (4) sont pré- déformées selon un profil en coude et/ou affaiblies en épaisseur, au moins sur une partie de leur largeur.
5. Procédé de fabrication d'une membrane à partir d'une feuille, de préférence épaisse d'environ 40 à 60 microns, pour fermer des récipients du type boîte ayant diverses sections, en opérant à l'aide d'un poinçon d'emboutissage et d'une matrice, la feuille étant, lors de la fermeture de l'outil, d'abord conformée en un fond (1), une paroi (2) et un rebord (3), caractérisé par le fait qu'au cours de la phase finale du mouvement de fermeture, des fentes longitudinales (5) sont découpées dans la paroi (2), le long d'une ligne périphérique, par des arêtes de cisaillement (8 et 11) intégrées dans l'outil d'emboutissage et dans la matrice et se re- couvrantau maximum de 0,2 mm, de préférence au maximum de 0,1 mm, l'épaisseur de la paroi (2) restant sensiblement inchangée.
6. Dispositif de mise en oeuvre du procédé selon revendication 5, caractérisé par le fait que le poinçon d'emboutissage (6) et la matrice (10) présentent chacun une arête de cisaillement périphérique (8,11), au moins l'une d'entre elles étant interrompue par des évidements (9) en plusieurs endroits, de préférence également répartis.
7. Dispositif selon revendication 6, caractérisé par le fait qu'en leur endroit le plus profond, les évidements (9) correspondent à l'épaisseur de la membrane (14).
EP86109223A 1985-07-10 1986-07-06 Boîte, ainsi que le procédé et la membrane pour sa fermeture Expired EP0209031B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86109223T ATE35246T1 (de) 1985-07-10 1986-07-06 Dose, sowie verfahren und membran zu ihrem verschliessen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2995/85A CH668754A5 (de) 1985-07-10 1985-07-10 Verfahren zum verschliessen eines dosenartigen behaelters mittels einer membran.
CH2995/85 1985-07-10

Publications (2)

Publication Number Publication Date
EP0209031A1 EP0209031A1 (fr) 1987-01-21
EP0209031B1 true EP0209031B1 (fr) 1988-06-22

Family

ID=4246282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86109223A Expired EP0209031B1 (fr) 1985-07-10 1986-07-06 Boîte, ainsi que le procédé et la membrane pour sa fermeture

Country Status (12)

Country Link
US (2) US4744484A (fr)
EP (1) EP0209031B1 (fr)
JP (1) JPS6264730A (fr)
AT (1) ATE35246T1 (fr)
AU (1) AU594963B2 (fr)
CA (1) CA1274479A (fr)
CH (1) CH668754A5 (fr)
DE (1) DE3660328D1 (fr)
DK (1) DK165400C (fr)
ES (1) ES2000657A6 (fr)
IN (1) IN163660B (fr)
ZA (1) ZA865110B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH658034A5 (de) * 1985-04-09 1986-10-15 Elpatronic Ag Aufreissbares dosenteil.
JPH01267157A (ja) * 1988-04-07 1989-10-25 Showa Denko Kk 缶様容器蓋およびその製法
US20090014448A1 (en) * 2003-03-18 2009-01-15 Werner Grabher Can comprising a foil seal
AU2006219982B8 (en) 2005-03-01 2011-12-08 Crown Packaging Technology, Inc Can for packaging food
US7757879B2 (en) 2005-11-29 2010-07-20 Sonoco Development, Inc. Container lid formed as a laminate having a built-in opening feature, container incorporating same, and method of making same
DE102006011748B4 (de) * 2006-03-13 2011-03-10 Abro Weidenhammer Gmbh Verpackungsbehälter mit einer ausreißbaren Dichtmembran sowie Verfahren zu seiner Herstellung
US7703625B2 (en) * 2006-11-15 2010-04-27 Sonoco Development, Inc. Container lid formed as a laminate having a built-in opening feature, container incorporating same, and method for making same
US20080283529A1 (en) 2007-05-17 2008-11-20 Sonoco Development, Inc. Container Lid Formed as a Laminate Having a Built-In Opening Feature, and Container Incorporating Same
EP2052984B1 (fr) * 2007-10-25 2010-12-15 IMPRESS Group B.V. Méthode pour préparer et former un couvercle et couvercle
EP2574558A1 (fr) * 2011-09-30 2013-04-03 Crown Packaging Technology, Inc Procédé pour la fermeture de boîtes métalliques
FR3013628B1 (fr) * 2013-11-27 2016-07-01 Guillaume Sireix Procede d'assemblage de corps tubulaires en materiau cartonne avec une structure obturante

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH537843A (de) * 1970-12-14 1973-06-15 Zeiler Ag Verschlusseinrichtung an einer Dose, mit entfernbarer Membran und Verfahren zu deren Herstellung
US3859942A (en) * 1971-06-01 1975-01-14 Continental Can Co Apparatus for and method of die forming and perforating pilfer-proof band of closure caps
US3746202A (en) * 1971-06-01 1973-07-17 Continental Can Co Die forming and perforating pilfer-proof band of closure caps
US3741142A (en) * 1972-03-27 1973-06-26 Procter & Gamble Method of making a tear open closure
GB1473828A (en) * 1973-05-03 1977-05-18 Dresser Europe Sa Seven-segment display arrangement and liquid fuel dispensing pump embodying the same
IN149917B (fr) * 1978-04-10 1982-05-29 Akerlund & Rausing Ab
CH639342A5 (en) * 1979-02-17 1983-11-15 Bon F Del Preformed closure element for sealing a can and method for its manufacture
EP0007487B1 (fr) * 1978-07-10 1981-11-11 Del Bon, Franco Boîte scellée et élément de fermeture préformé ainsi que procédé et dispositifs pour leur fabrication
CH636820A5 (de) * 1979-06-18 1983-06-30 Sandherr Max Ag Dosenverschluss.
SE429036B (sv) * 1979-12-17 1983-08-08 Haustrup Plastic As Behallare med en forslutningsdel
DE3212990A1 (de) * 1981-04-08 1982-11-04 Weidenhammer Packungen KG GmbH & Co, 6832 Hockenheim Verfahren zur herstellung einer verschlussmembran fuer behaelter
US4691834A (en) * 1982-07-12 1987-09-08 Bankers Trust Company Cap and neck structure for a wide mouth jar

Also Published As

Publication number Publication date
EP0209031A1 (fr) 1987-01-21
CA1274479A (fr) 1990-09-25
AU6001086A (en) 1987-01-15
ZA865110B (en) 1987-02-25
DK325086A (da) 1987-01-11
IN163660B (fr) 1988-10-22
ES2000657A6 (es) 1988-03-16
DK325086D0 (da) 1986-07-08
CH668754A5 (de) 1989-01-31
AU594963B2 (en) 1990-03-22
DE3660328D1 (en) 1988-07-28
US4842468A (en) 1989-06-27
ATE35246T1 (de) 1988-07-15
JPS6264730A (ja) 1987-03-23
DK165400B (da) 1992-11-23
US4744484A (en) 1988-05-17
DK165400C (da) 1993-04-05

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