EP0088725B1 - Method of manufacturing a can closure - Google Patents

Method of manufacturing a can closure Download PDF

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Publication number
EP0088725B1
EP0088725B1 EP83810080A EP83810080A EP0088725B1 EP 0088725 B1 EP0088725 B1 EP 0088725B1 EP 83810080 A EP83810080 A EP 83810080A EP 83810080 A EP83810080 A EP 83810080A EP 0088725 B1 EP0088725 B1 EP 0088725B1
Authority
EP
European Patent Office
Prior art keywords
lid
sealing
polyamide
closure strip
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
EP83810080A
Other languages
German (de)
French (fr)
Other versions
EP0088725A2 (en
EP0088725A3 (en
Inventor
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.)
Alcan Holdings Switzerland AG
Original Assignee
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 Schweizerische Aluminium AG filed Critical Schweizerische Aluminium AG
Priority to AT83810080T priority Critical patent/ATE19224T1/en
Publication of EP0088725A2 publication Critical patent/EP0088725A2/en
Publication of EP0088725A3 publication Critical patent/EP0088725A3/en
Application granted granted Critical
Publication of EP0088725B1 publication Critical patent/EP0088725B1/en
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
    • B05D7/14—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 to metal, e.g. car bodies
    • 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
    • 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
    • B65D2517/0082—Coated or laminated metal
    • 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
    • B65D2517/5005—Details of flexible tape or foil-like material with a part of the tape melted through the opening
    • 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
    • B65D2517/5029—Single layer and connected to container by local areas of adhesive
    • 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 method for producing a can lid painted on both sides with at least one pouring opening covered by a sealed sealing strip with a sealing surface made of polyamide.
  • This prior art corresponds to the preamble of claim 1 and is known from EP-A-64948. This document was published on November 17, 1982 and therefore falls under Article 54 (3) EPC.
  • Lids made of aluminum, tinplate or tin-free steel are known for beverage cans provided with one or more pouring openings, the pouring openings being covered with a sealed sealing strip.
  • Can lids made of metal are usually provided on both sides with a lacquer layer, for example with a coating of a phenol-epoxy resin.
  • Known sealing strips consist of an aluminum thin strip which is coated on its surface to be sealed with a coating of a thermoplastic material, for example polyamide.
  • the adhesive strength of the polyamide sealing layer on the painted lid surface has increased for cans with high internal pressure - for example cans containing carbonated drinks after a long storage period at temperatures above 30 ° C - proven insufficient.
  • the inventor has set himself the goal of creating a method of the type mentioned at the outset with which the adhesive strength of the sealing strip on the lid can be further increased.
  • the can lid is heated after the sealing strip has been sealed until the polyamide has melted and then cooled.
  • heating the lid in a temperature range of 175 to 300 ° C is sufficient.
  • the duration of the heat depends on the level of the temperature used, i.e. H. at higher temperatures a shorter period of time is sufficient.
  • the closure strip is provided with a free-standing tear tab 5.
  • the area of the closure strip 3 spanning the pouring opening 2 and the tear-open tab 5 have an embossing 6.
  • lids with the sealing strips sealed on were reheated in an air circulating oven at a temperature of 270 ° C. for 20 seconds.
  • 40 cans with a nominal diameter of 65 mm were filled with 0.3 l of a carbonated beverage. Lids with a sealing strip sealed under the conditions mentioned, with and without reheating, were crimped onto 20 cans each. The cans were then stored at 40 ° C; the internal pressure was 4.4 bar.
  • the sealing strips of the non-reheated lids already came off after 5 days of storage. With the reheated lids, there was no sign of the detachment of the sealing strips even after a storage period of 3 months.

Landscapes

  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Laminated Bodies (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Closures For Containers (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Semiconductor Lasers (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Glass Compositions (AREA)
  • Closing Of Containers (AREA)
  • Steroid Compounds (AREA)
  • Bathtub Accessories (AREA)
  • Physical Deposition Of Substances That Are Components Of Semiconductor Devices (AREA)
  • Medicinal Preparation (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Sealing Material Composition (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

Can lids made of metal, lacquered on both sides and featuring a pouring outlet covered over with a closure strip having a sealing surface of polyamide, often exhibit inadequate bond strength between the closure strip and the lacquered can lid surface. The bond strength can be increased if the can lid, after the closure strip has been sealed onto it, is heated until the polyamide melts and then the can lid with closure strip is subsequently cooled.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen eines beidseitig lackierten Dosendeckels mit mindestens einer durch einen aufgesiegelten Verschlussstreifen mit Siegelfläche aus Polyamid abgedeckten Ausgiessöffnung. Dieser Stand der Technik entspricht dem Oberbegriff des Patentanspruchs 1 und ist aus der EP-A-64948 bekannt. Diese Schrift wurde am 17.11.1982 veröffentlicht und fällt daher under Artikel 54 (3) EPÜ.The invention relates to a method for producing a can lid painted on both sides with at least one pouring opening covered by a sealed sealing strip with a sealing surface made of polyamide. This prior art corresponds to the preamble of claim 1 and is known from EP-A-64948. This document was published on November 17, 1982 and therefore falls under Article 54 (3) EPC.

Für Getränkedosen sind mit einem oder mehreren Ausgiessöffnungen versehene Deckel aus Aluminium, Weissblech oder zinnfreiem Stahl (tin free steel, TFS) bekannt, wobei die Ausgiessöffnungen mit einem aufgesiegelten Verschlussstreifen abgedeckt sind. Dosendeckel aus Metall sind üblicherweise beidseitig mit einer Lackschicht, beispielsweise mit einer Beschichtung aus einem Phenol-Epoxyharz, versehen. Bekannte Verschlussstreifen bestehen aus einem Aluminiumdünnband, das auf seiner zu versiegelnden Fläche mit einem Ueberzug aus einem thermoplastischen Kunststoff, beispielsweise Polyamid, beschichtet ist.Lids made of aluminum, tinplate or tin-free steel (TFS) are known for beverage cans provided with one or more pouring openings, the pouring openings being covered with a sealed sealing strip. Can lids made of metal are usually provided on both sides with a lacquer layer, for example with a coating of a phenol-epoxy resin. Known sealing strips consist of an aluminum thin strip which is coated on its surface to be sealed with a coating of a thermoplastic material, for example polyamide.

Bei beidseitig lackierten Dosendeckeln aus Metall mit einem aufgesiegelten Verschlussstreifen aus einem Aluminium-Polyamid-Laminat hat sich die Haftfestigkeit der Polyamid-Siegelschicht auf der lackierten Deckeloberfläche bei Dosen mit hohem Innendruck - beispielsweise kohlensäurehaltige Getränke enthaltende Dosen nach längerer Lagerzeit bei Temperaturen oberhalb 30 °C - als ungenügend erwiesen.In the case of metal can lids coated on both sides with a sealed sealing strip made of an aluminum-polyamide laminate, the adhesive strength of the polyamide sealing layer on the painted lid surface has increased for cans with high internal pressure - for example cans containing carbonated drinks after a long storage period at temperatures above 30 ° C - proven insufficient.

Angesichts dieser Gegebenheiten hat sich der Erfinder das Ziel gesetzt, ein Verfahren der eingangs erwähnten Art zu schaffen, mit welchem die Haftfestigkeit des Verschlussstreifens auf dem Deckel weiter gesteigert werden kann.In view of these circumstances, the inventor has set himself the goal of creating a method of the type mentioned at the outset with which the adhesive strength of the sealing strip on the lid can be further increased.

Zur Lösung dieser Aufgabe führt, dass der Dosendeckel nach dem Aufsiegeln des Verschlussstreifens bis zum Aufschmelzen des Polyamids erwärmt und anschliessend abgekühlt wird.To solve this problem, the can lid is heated after the sealing strip has been sealed until the polyamide has melted and then cooled.

Mit dem erfindungsgemässen Verfahren wird es möglich, beidseitig lackierte Deckel aus Metall mit einem gut haftenden Verschlussstreifen zu versehen. Es hat sich herausgestellt, dass insbesondere bei der für kohlensäurehaltige Getränke enthaltende Dosen erforderlichen Dicke des Deckelwerkstofts beim Aufsiegeln des Verschlussstreifens von den Siegelwerkzeugen nicht genügend Wärme an die Siegelzone herangeführt werden kann, ohne dass sich die Innenlackierung des Deckels überhitzt und dabei beschädigt wird.With the method according to the invention, it is possible to provide metal covers which are painted on both sides with a well-adhering sealing strip. It has been found that, particularly in the case of the thickness of the lid material required for cans containing carbonated drinks, the sealing tools cannot heat the sealing strip sufficiently to the sealing zone without the interior coating of the lid overheating and being damaged in the process.

Durch das Erwärmen des Deckels nach dem Aufsiegeln des Verschlussstreifens wird die Haftfestigkeit zwischen Verschlussstreifen und Deckel erheblich gesteigert. Ueberdies werden mechanische Spannungen, welche beim Ausstanzen der Ausgiessöffnung in deren Bereich entstehen, weitgehend abgebaut.By heating the lid after the sealing strip has been sealed, the adhesive strength between the sealing strip and the lid is considerably increased. In addition, mechanical stresses which arise when the pouring opening is punched out in its area are largely reduced.

Um das erforderliche Aufschmelzen des Polyamids - z. B. Polyamid-1 - zu erwirken, genügt eine Erwärmung des Deckels in einem Temperaturbereich von 175 bis 300 °C. Die Zeitdauer der Wärmeeinwirkung richtet sich nach der Höhe der angewendeten Temperatur, d. h. bei höheren Temperaturen ist eine kürzere Zeitdauer ausreichend.To the required melting of the polyamide - z. B. polyamide-1 - to effect, heating the lid in a temperature range of 175 to 300 ° C is sufficient. The duration of the heat depends on the level of the temperature used, i.e. H. at higher temperatures a shorter period of time is sufficient.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels sowie anhand der Zeichnung ; diese zeigt in ihrer einzigen Figur einen Dosendeckel mit aufgesiegeltem Verschlussstreifen.Further advantages, features and details of the invention result from the following description of a preferred exemplary embodiment and from the drawing; in its single figure, this shows a can lid with a sealing strip sealed on.

Ein Dosendeckel 1 - z. B. aus einer Aluminiumlegierung, beidseitig beschichtet mit einem Phenol-Epoxyharz - ist mit einer Ausgiessöffnung 2 versehen, welche durch einen Verschlussstreifen 3 aus einem Aluminiumdünnband mit Polyamid-12-Beschichtung über eine SiegeInaht 4 einer beispielsweisen Breite von 2 bis 3 mm abgedeckt ist.A can lid 1 - z. B. from an aluminum alloy, coated on both sides with a phenol-epoxy resin - is provided with a pouring opening 2, which is covered by a sealing strip 3 made of a thin aluminum strip with a polyamide 12 coating over a SiegeInaht 4 of an example width of 2 to 3 mm.

Der Verschlussstreifen ist mit einer freistehenden Aufreisslasche 5 versehen. Der die Ausgiessöffnung 2 überspannende Bereich des Verschlussstreifens 3 sowie die Aufreisslasche 5 weisen eine Prägung 6 auf.The closure strip is provided with a free-standing tear tab 5. The area of the closure strip 3 spanning the pouring opening 2 and the tear-open tab 5 have an embossing 6.

Die nachstehenden Versuche zeigen die Vorteilhaftigkeit des erfindungsgemässen Verfahrens.The experiments below show the advantageousness of the method according to the invention.

Aus einem beidseitig mit einem Phenol-Epoxyharz lackierten Blech aus einer Aluminiumlegierung einer Dicke von 0,33 mm wurden Dosendeckel mit einer Ausgiessöffnung gefertigt. Zur Abdeckung der Ausgiessöffnung wurde ein Verschlussstreifen aus einem Aluminium-Polyamid-12-Laminat unter den folgenden Bedingungen aufgesiegelt :

  • Temperatur des oberen Siegelwerkzeugs : 250 °C
  • Temperatur des unteren Siegelwerkzeugs : 130 °C
  • Siegelzeit : 0,6 sec.
  • Spezifischer Siegeldruck : 1 000 N/cm2
Can covers with a pouring opening were made from a sheet of aluminum alloy with a thickness of 0.33 mm, which was coated on both sides with a phenol-epoxy resin. To cover the pouring opening, a sealing strip made of an aluminum-polyamide 12 laminate was sealed under the following conditions:
  • Upper sealing tool temperature: 250 ° C
  • Lower sealing tool temperature: 130 ° C
  • Sealing time: 0.6 sec.
  • Specific sealing pressure: 1 000 N / cm 2

Ein Teil dieser Deckel mit aufgesiegeltem Verschlussstreifen wurde in einem Luftumwälzofen bei einer Temperatur von 270 °C während 20 sec. nacherhitzt.Some of these lids with the sealing strips sealed on were reheated in an air circulating oven at a temperature of 270 ° C. for 20 seconds.

40 Dosen mit einem Nenndurchmesser von 65 mm wurden mit 0,3 I eines kohlensäurehaltigen Getränks gefüllt. Auf je 20 Dosen wurden Deckel mit einem unter den genannten Bedingungen aufgesiegelten Verschlussstreifen mit und ohne Nacherhitzung aufgebördelt. Die Dosen wurden anschliessend bei 40 °C gelagert ; der Innendruck betrug dabei 4,4 bar.40 cans with a nominal diameter of 65 mm were filled with 0.3 l of a carbonated beverage. Lids with a sealing strip sealed under the conditions mentioned, with and without reheating, were crimped onto 20 cans each. The cans were then stored at 40 ° C; the internal pressure was 4.4 bar.

Die Verschlussstreifen der nicht nacherhitzten Deckel lösten sich nach 5 Tagen Lagerzeit bereits ab. Bei den nacherhitzten Deckeln zeigten sich auch nach einer Lagerzeit von 3 Monaten keine Anzeichen einer beginnenden Ablösung der Verschlussstreifen.The sealing strips of the non-reheated lids already came off after 5 days of storage. With the reheated lids, there was no sign of the detachment of the sealing strips even after a storage period of 3 months.

Claims (2)

1. A method of production of a can lid (1) of metal lacquered on both sides and having at least one pouring opening (2) covered over by a sealed closure strip (3) having a sealing face of polyamide, characterized in that after the sealing of the closure strip (3) the can lid is heated up until the polyamide fuses and is subsequently cooled down.
2. A method as in Claim 1, characterized in that after the sealing of the closure strip (3) the can lid is heated during 0,5 seconds to 2 minutes in a temperature range from 175 to 300 °C.
EP83810080A 1982-03-05 1983-02-25 Method of manufacturing a can closure Expired EP0088725B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83810080T ATE19224T1 (en) 1982-03-05 1983-02-25 PROCESS FOR MAKING A CAN LID.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1380/82A CH653305A5 (en) 1982-03-05 1982-03-05 PROCESS FOR MAKING A CAN LID.
CH1380/82 1982-03-05

Publications (3)

Publication Number Publication Date
EP0088725A2 EP0088725A2 (en) 1983-09-14
EP0088725A3 EP0088725A3 (en) 1984-05-09
EP0088725B1 true EP0088725B1 (en) 1986-04-16

Family

ID=4209074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83810080A Expired EP0088725B1 (en) 1982-03-05 1983-02-25 Method of manufacturing a can closure

Country Status (12)

Country Link
US (1) US4462732A (en)
EP (1) EP0088725B1 (en)
JP (1) JPS58166014A (en)
AT (1) ATE19224T1 (en)
AU (1) AU554625B2 (en)
CA (1) CA1194397A (en)
CH (1) CH653305A5 (en)
DE (2) DE3208593C1 (en)
DK (1) DK156386C (en)
ES (1) ES8402199A1 (en)
NO (1) NO160771C (en)
ZA (1) ZA83874B (en)

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US3517360A (en) * 1966-07-14 1970-06-23 Bell Aerospace Corp Electromagnetic force motor having linear output characteristics
DE3233106C2 (en) * 1982-09-02 1986-01-09 Schweizerische Aluminium Ag, Chippis Method of making a can end
US5013516A (en) * 1983-05-25 1991-05-07 Showa Denko K.K. Method of manufacturing container covers
JPH0437096Y2 (en) * 1984-11-30 1992-09-01
GB2168312B (en) * 1984-12-13 1989-05-17 Metal Box Plc Containers
US4562936A (en) * 1985-02-12 1986-01-07 The Procter & Gamble Company Easy-open laminated container with optional reclosing means and method of making
US4762579A (en) * 1985-12-03 1988-08-09 Toyo Seikan Kaisha, Ltd. Process for producing easily openable closure
US5219086A (en) * 1989-03-29 1993-06-15 Tetra Alfa Holdings S.A. Packing container for liquid, especially pressurized contents
US20070272693A1 (en) * 2006-05-26 2007-11-29 Sonoco Development, Inc. Membrane Lid with Recessed Tab, and Container Incorporating Same
US20220258932A1 (en) * 2019-07-30 2022-08-18 Kikuo Yamada Lid

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552597A (en) * 1969-01-03 1971-01-05 Continental Can Co Easy opening container
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
US3666138A (en) * 1970-06-15 1972-05-30 Nat Can Corp Container closure
US3727809A (en) * 1970-08-05 1973-04-17 Steel Corp Can end with bonded seal slide
US3855026A (en) * 1971-07-14 1974-12-17 Sonoco Products Co Method of manufacturing container end with protective bead
US4232797A (en) * 1979-05-14 1980-11-11 Waterbury Nelson J Reclosable container
US4170314A (en) * 1978-10-11 1979-10-09 The Continental Group, Inc. Container closure
US4270665A (en) * 1979-06-22 1981-06-02 Toyo Seikan Kaisha, Ltd. Peelable adhesive structure and method for its manufacture
US4332846A (en) * 1980-01-28 1982-06-01 National Distillers & Chemical Corp. Can cover
EP0059635B1 (en) * 1981-03-02 1985-06-05 Toyo Seikan Kaisha Limited Easily openable vessel closure and process for preparation thereof
CH653929A5 (en) * 1981-05-07 1986-01-31 Alusuisse METHOD FOR PRODUCING A CAN LID WITH AT LEAST ONE POUR HOLE CLOSED BY A SEALED SEALING STRIP.
US4390104A (en) * 1981-08-19 1983-06-28 U.S. Clinical Products, Inc. Flexible plastic sterile closure system for containers

Also Published As

Publication number Publication date
CH653305A5 (en) 1985-12-31
ES520208A0 (en) 1984-02-16
ES8402199A1 (en) 1984-02-16
JPS58166014A (en) 1983-10-01
DE3208593C1 (en) 1983-07-21
DK156386C (en) 1990-01-15
CA1194397A (en) 1985-10-01
US4462732A (en) 1984-07-31
ZA83874B (en) 1983-11-30
AU554625B2 (en) 1986-08-28
AU1162583A (en) 1983-09-08
ATE19224T1 (en) 1986-05-15
DK88683A (en) 1983-09-06
DE3363010D1 (en) 1986-05-22
NO160771C (en) 1989-05-31
DK156386B (en) 1989-08-14
JPH0256209B2 (en) 1990-11-29
EP0088725A2 (en) 1983-09-14
NO160771B (en) 1989-02-20
DK88683D0 (en) 1983-02-25
NO830701L (en) 1983-09-06
EP0088725A3 (en) 1984-05-09

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