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EP0064948A2 - Procédé pour la fabrication de couvercles avec une bande de fermeture couvrant au moins un trou de versement, en particulier pour des boîtes de boisson - Google Patents

Procédé pour la fabrication de couvercles avec une bande de fermeture couvrant au moins un trou de versement, en particulier pour des boîtes de boisson Download PDF

Info

Publication number
EP0064948A2
EP0064948A2 EP82810184A EP82810184A EP0064948A2 EP 0064948 A2 EP0064948 A2 EP 0064948A2 EP 82810184 A EP82810184 A EP 82810184A EP 82810184 A EP82810184 A EP 82810184A EP 0064948 A2 EP0064948 A2 EP 0064948A2
Authority
EP
European Patent Office
Prior art keywords
hole
adhesive primer
lid
sealing strip
strip
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
EP82810184A
Other languages
German (de)
English (en)
Other versions
EP0064948B1 (fr
EP0064948A3 (en
Inventor
Oldrich Stanek
Siegfried Bloeck
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.)
Rio Tinto Switzerland AG
Original Assignee
Alusuisse Holdings AG
Schweizerische Aluminium 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 Alusuisse Holdings AG, Schweizerische Aluminium AG filed Critical Alusuisse Holdings AG
Priority to AT82810184T priority Critical patent/ATE21077T1/de
Publication of EP0064948A2 publication Critical patent/EP0064948A2/fr
Publication of EP0064948A3 publication Critical patent/EP0064948A3/de
Application granted granted Critical
Publication of EP0064948B1 publication Critical patent/EP0064948B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified
    • B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
    • 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
    • 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
    • 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
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B05D2202/20—Metallic substrate based on light metals
    • B05D2202/25—Metallic substrate based on light metals based on Al
    • 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
    • B65D2517/0059—General cross-sectional shape of container end panel
    • B65D2517/0061—U-shaped
    • 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
    • B65D2517/5008—Details of flexible tape or foil-like material with a sealing coat
    • 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
    • B65D2517/5072—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 lids, in particular for beverage cans.
  • lids are mostly made of aluminum (pure aluminum or aluminum alloy), tinplate or tin-free steel (TFS) and are usually provided with a protective lacquer layer on their inner surfaces, e.g. coated on a phenol-epoxy basis.
  • sealing strips advantageously consist of an aluminum foil with a thickness of approximately 0.9-0.14 mm, the surface of which is to be sealed with a coating of a thermoplastic material, for example with a thickness of approximately 0.015 to 0.03 mm, usually approximately 0.02 mm, is coated, the aluminum surface usually being provided with a thinner phenol-epoxy lacquer layer before the plastic layer is applied.
  • the strip On the outside, the strip is usually still covered with a decorative varnish. strips made of an aluminum-polyamide laminate, especially with a polyamide 12 coating, have proven very successful.
  • the lid material is in tape form or painted in panels and from this the lids are made, in which the pouring and possibly the air holes are punched out. As a result, the cut edges of these holes remain unprotected.
  • the object of the present invention is to remedy this deficiency in the case of lids with punched holes which are covered by a sealed sealing strip and to create lids which are not attacked by the filling material at the cut edges of the holes.
  • This object is achieved in accordance with the method according to the invention in that after the sealing strip has been sealed, its free-standing surface corresponding to the holes and the surface of the lid material surrounding the holes are treated with an adhesive primer from the inside of the lid, this adhesive primer is then dried apply a layer of plastisol to the inner surface of the lid prepared in this way and have it gelled by heat treatment.
  • This heat treatment can at 130 to 175 0 C for 5 sec. To 15 min. for example in an air circulating oven, with infrared radiation or with similar known means.
  • the thickness of the applied plastisol layer is preferably 0.1 to 0.25 mm.
  • Epoxidized polymethyl methacrylate in particular, has proven to be a good adhesive primer.
  • other polyacrylic esters in particular polymethacrylic esters, especially in their epoxidized form, can also be used for this purpose.
  • Such adhesive primers are preferably applied as a 0.05 to 0.5% solution in suitable solvents, for example by spraying, in such an amount that the adhesive primer layer has a thickness of 0.05 to 15, preferably 0.1 up to 2 g per m 2 .
  • suitable solvents for example by spraying, in such an amount that the adhesive primer layer has a thickness of 0.05 to 15, preferably 0.1 up to 2 g per m 2 .
  • methyl ethyl ketone can be used as the solvent for the epoxidizedoolyacrylic esters.
  • the primer solution dries relatively quickly on the inside of the lid. If necessary, the drying process can e.g. accelerate with a warm air shower.
  • the described pretreatment of the area of the lid inner surfaces mentioned has the effect that the plastisol coating adheres perfectly not only to the lacquered surface of the lid material, but also to the exposed plastic coating, in particular the polyamide coating of the sealing strip.
  • the plastisol layer had poor adhesion, especially on the free-standing surface of a sealing strip made of an aluminum-polyamide laminate tet, so that when the strip is torn away, it separates from the plastisol film and this film continues to close the hole (windowing effect), or that pieces of the plastisol film remain on the edge of the hole (feathering), which is unsightly.
  • the area of the sealing strip corresponding to the pouring hole is often embossed with e.g. provided in the form of regularly arranged elevations and depressions.
  • the plastisol in particular can be applied with a stamp-like tool with a work surface lying on one level, thereby ensuring that this application is actually carried out regularly over the entire desired area.
  • the above-mentioned tool can e.g. look like a brush and have a number of steel pins, which are enclosed at one end in a carrier plate, with their shafts penetrate a perforated bottom of a chamber for the plastisol and their flattened tips lie in one and the same plane and form the work surface.
  • the shafts of the pins are conical in the area of the perforated base in such a way that they close the base holes when the tool is at rest.
  • the pins are pushed back through the carrier plate, whereby the holes open and the plastisol flows under pressure along the pins onto the surface to be coated.
  • the illustrated lid 1 (e.g. for beverage cans, in particular beer cans) consists, for example, of tin-free steel and has a drop-shaped pouring or drinking hole 2, the longitudinal axis of which extends radially with respect to the lid.
  • This pouring hole 2 with cutting edge 3 is closed by a sealed sealing strip 4, consisting of an aluminum thin strip 5 with a polyamide 12 coating 6.
  • the width of the sealing seam 7 around the hole is approximately 1 to 2 mm.
  • the strip also has a free-standing grip tab 8 on which the strip can be gripped to be torn away. This tab and the area of the closure strip corresponding to the hole are provided with an embossing 9.
  • the strip material In the area of the hole, the strip material is pushed into the hole in such a way that the inner surface of the strip comes to lie approximately in the same plane as the inner surface of the lid.
  • This area and the surrounding area of the lid material are pre-treated on the inside with the adhesive primer and completely covered with a PVC plastisol layer 10.
  • n modification thereof and in particular in the case of larger pouring holes, it is also possible to only cover the cut edge 3 and its vicinity with the plastisol and to leave the middle part of the area of the sealing strip spanning the hole uncovered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Closures For Containers (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP82810184A 1981-05-07 1982-05-03 Procédé pour la fabrication de couvercles avec une bande de fermeture couvrant au moins un trou de versement, en particulier pour des boîtes de boisson Expired EP0064948B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82810184T ATE21077T1 (de) 1981-05-07 1982-05-03 Verfahren zur herstellung von deckeln mit einem mindestens ein ausgiessloch abdeckenden verschlussstreifen, insbesondere fuer getraenkedosen.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH2962/81A CH653929A5 (de) 1981-05-07 1981-05-07 Verfahren zur herstellung eines dosendeckels mit mindestens einem durch einen aufgesiegelten verschlussstreifen verschlossenen ausgiessloch.
CH2962/81 1981-05-07
DE3118639A DE3118639C2 (de) 1981-05-07 1981-05-11 Verfahren zum Herstellen eines Dosendeckels aus Metall mit Ausgießloch und Verschlußstreifen dafür

Publications (3)

Publication Number Publication Date
EP0064948A2 true EP0064948A2 (fr) 1982-11-17
EP0064948A3 EP0064948A3 (en) 1983-06-01
EP0064948B1 EP0064948B1 (fr) 1986-07-30

Family

ID=25691838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810184A Expired EP0064948B1 (fr) 1981-05-07 1982-05-03 Procédé pour la fabrication de couvercles avec une bande de fermeture couvrant au moins un trou de versement, en particulier pour des boîtes de boisson

Country Status (5)

Country Link
US (1) US4461605A (fr)
EP (1) EP0064948B1 (fr)
JP (1) JPS57194948A (fr)
CH (1) CH653929A5 (fr)
DE (1) DE3118639C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088725A3 (en) * 1982-03-05 1984-05-09 Schweizerische Aluminium Ag Method of manufacturing a can closure
WO2008107323A1 (fr) * 2007-03-02 2008-09-12 Crown Packaging Technology, Inc Récipients métalliques

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3233106C2 (de) * 1982-09-02 1986-01-09 Schweizerische Aluminium Ag, Chippis Verfahren zum Herstellen eines Dosendeckels
US4562936A (en) * 1985-02-12 1986-01-07 The Procter & Gamble Company Easy-open laminated container with optional reclosing means and method of making
US4781323A (en) * 1985-08-27 1988-11-01 Minnesota Mining And Manufacturing Company Reclosable closure assembly for container
USRE33893E (en) * 1985-08-27 1992-04-21 Minnesota Mining And Manufacturing Company Reclosable closure assembly for container
DE3824949A1 (de) * 1988-07-22 1990-01-25 Becker Emil & Adolf Gmbh Co Getriebe fuer sektional- oder rolltore
US4946061A (en) * 1989-09-25 1990-08-07 Shell Oil Company Reclosable opening device for a container
US5103550A (en) * 1989-12-26 1992-04-14 Aluminum Company Of America Method of making a food or beverage container
US5692635A (en) * 1990-06-06 1997-12-02 American National Can Company Easy open closure
US5622745A (en) * 1994-11-16 1997-04-22 The West Company, Incorporated Method of reducing particulates from metal closures
DE10108009A1 (de) * 2001-02-20 2002-08-29 Schmalbach Lubeca Deckelabdeckung
MX2013012320A (es) * 2011-04-20 2014-05-27 Dayton Systems Group Inc Sello para aplicaciones de temperatura elevada y metodo para formar el mismo.
DK3385185T3 (da) * 2017-04-05 2020-07-20 Gregor Anton Piech Metallisk dåselåg
JP7242193B2 (ja) * 2018-04-27 2023-03-20 大和製罐株式会社 タブ、缶蓋及び缶蓋の製造方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE644299A (fr) * 1963-02-25
US3292828A (en) * 1964-09-17 1966-12-20 Nat Can Corp Easy opening can end
US3339788A (en) * 1965-10-22 1967-09-05 Nat Can Corp Container
GB1219989A (en) * 1968-05-22 1971-01-20 Alfred Kenneth Unsworth Can ends
US3671356A (en) * 1970-06-08 1972-06-20 Continental Can Co Method of forming a peelable seal between propylene polymer and a carboxylated polypropylene coated surface
CH557268A (de) * 1972-10-18 1974-12-31 Rausing Anders Ruben Einweg-verpackungsbehaelter.
US3981652A (en) * 1974-08-05 1976-09-21 Usm Corporation Machine for partly coating articles
DE2519709B2 (de) * 1974-09-18 1979-07-12 The Continental Group, Inc., New York, N.Y. (V.St.A.) öffnungseinrichtung an einem Deckel, insbesondere aus Metall sowie Verfahren zu seiner Herstellung
US4311741A (en) * 1978-03-30 1982-01-19 Minnesota Mining And Manufacturing Company Polyester films with improved processability and tear resistance
US4170314A (en) * 1978-10-11 1979-10-09 The Continental Group, Inc. Container closure
US4215791A (en) * 1979-08-06 1980-08-05 Minnesota Mining And Manufacturing Company Easy open closure system
CA1172995A (fr) * 1981-03-02 1984-08-21 Hiroshi Ueno Fermeture a depose facile pour cuve, et methode de fabrication connexe
US4378074A (en) * 1981-05-18 1983-03-29 Minnesota Mining And Manufacturing Company Easy open closure system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088725A3 (en) * 1982-03-05 1984-05-09 Schweizerische Aluminium Ag Method of manufacturing a can closure
WO2008107323A1 (fr) * 2007-03-02 2008-09-12 Crown Packaging Technology, Inc Récipients métalliques

Also Published As

Publication number Publication date
EP0064948B1 (fr) 1986-07-30
US4461605A (en) 1984-07-24
DE3118639C2 (de) 1986-03-27
CH653929A5 (de) 1986-01-31
EP0064948A3 (en) 1983-06-01
JPS57194948A (en) 1982-11-30
DE3118639A1 (de) 1982-11-18

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