EP0104548A2 - Container closure with an opening device - Google Patents

Container closure with an opening device Download PDF

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Publication number
EP0104548A2
EP0104548A2 EP83109099A EP83109099A EP0104548A2 EP 0104548 A2 EP0104548 A2 EP 0104548A2 EP 83109099 A EP83109099 A EP 83109099A EP 83109099 A EP83109099 A EP 83109099A EP 0104548 A2 EP0104548 A2 EP 0104548A2
Authority
EP
European Patent Office
Prior art keywords
carrier layer
tear
notch
layer
container lid
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
EP83109099A
Other languages
German (de)
French (fr)
Other versions
EP0104548A3 (en
EP0104548B1 (en
Inventor
Norbert Prof Dr. Buchner
Rolf Eberspächer
Dieter Liede
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0104548A2 publication Critical patent/EP0104548A2/en
Publication of EP0104548A3 publication Critical patent/EP0104548A3/en
Application granted granted Critical
Publication of EP0104548B1 publication Critical patent/EP0104548B1/en
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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/22—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines with double walls; with walls incorporating air-chambers; with walls made of laminated material
    • 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
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4011—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening completely by means of a tearing 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4012—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening partially by means of a tearing 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
    • B65D2517/0088—Foil-like, e.g. paper or cardboard with plastic overmoulded onto foil

Definitions

  • a weakening line surrounding a tear-open part is arranged in the carrier layer, which partially completely penetrates the plastic layer and which is formed during injection molding.
  • the backing layer is made as an outer part in a mold injection molded, which is very slow and expensive.
  • An aluminum / plastic laminate plate is then sealed to the carrier layer.
  • the carrier layer and the laminate plate must be fed and positioned individually.
  • the known lid has the disadvantage that when the laminate plate is applied, folds form on the angled sealing flange of the lid, which folds can prevent the tightness of the containers sealed with such a lid.
  • a container lid with a tear-off part surrounded by score lines which is formed from a metal / plastic laminate.
  • This lid has a relatively thick carrier and barrier layer made of a metal plate, with the inside of which a relatively thin plastic layer is glued as a corrosion and protective layer.
  • the notch lines surrounding the tear-open part are stamped into the thick metal plate on this cover.
  • the well-known lid is probably stiff and tight, but it is very expensive due to its high metal content.
  • the container lid according to the invention with the characterizing features of the main claim has the advantage that it is formed from a commercially available plastic / metal laminate strip in large numbers without creasing by deep drawing. And its weakening line can be produced in a simple manner. Depending on the configuration of the cover, the lines of weakness can be pressed quickly and precisely into the plastic carrier layer using a heated notching tool before or after molding.
  • the measures listed in the subclaims permit advantageous developments of the container lid specified in the main claim.
  • the arrangement of beads on both sides of the line of weakness is particularly advantageous.
  • Such a thickening of the material provides good guidance when tearing the tear-open part and prevents the tear line from running.
  • the container lid according to the invention can be produced in large numbers and in a simple manner by a method with the characterizing features of claim 5.
  • a packaging container with a body 10 made of a multilayer packaging material is closed at its upper opening with a lid 11 which has an easy-to-use opening device for removing the contents.
  • the fuselage 10 and lid 11 have a plan in the form of a square with rounded corners.
  • the cover 11 has a U-shaped edge fold 12 which engages around the opening edge of the fuselage 10 and is sealed or welded to it. It is formed by deep drawing or deep drawing.
  • a multilayer composite material is used for the production of the cover 11, which has an outer layer 14 made of plastic, a middle layer 15 made of metal, preferably aluminum and an inner layer 16 made of a heat-sealable plastic.
  • the individual layers can be connected to one another by means of a lamination adhesive.
  • the outer layer 14, which gives the lid its stiffness and strength as a carrier layer, is about 100 to 400 microns, preferably 200 microns thick and consists of a thermoplastic such as polyvinyl chloride (PVC), polyester (PETP), polystyrene (PS), polycarbonate (PC) or the like.
  • the middle layer 15, which contributes to a high tightness of the cover consists of an aluminum or steel foil with a thickness of 2 0 to 40 / um.
  • the inner layer 16, which is used for heat sealing or welding to the body 10 and acts as an insulating layer has a thickness of about 50 / um and consists of polyethylene (PE), polypropylene (PP), polyvinylidene chloride (PVDC), polyester (PETP) or from a heat seal lacquer.
  • PE polyethylene
  • PP polypropylene
  • PVDC polyvinylidene chloride
  • PET polyester
  • the opening device in the cover 11 has a removable tear-open part 20 which is surrounded by a weakening line 21.
  • the tear-open part 20 can have various shapes, for example a circular area (FIG. 1) for inserting a drinking straw, teardrop shape (FIG. 2), or a full tear-open area adapted to the lid level (FIGS. 4 and 5).
  • the weakening line 21 is only arranged in the outer carrier layer 14 and penetrates its thickness in the form of a notch 22 completely or almost completely.
  • the notch 22 is hot-stamped into the carrier layer 14 by means of a heated notching tool, plastic being melted and displaced under the action of pressure and heat.
  • beads 23, 24 protruding on both sides of the notch 22 of the weakening line 21 over the plane of the top of the carrier layer 14 (FIGS. 2 and 6).
  • the thickening of the carrier layer 14 next to the notch 22 produced by the beads 23, 24 contributes to the fact that when the Tear-off part 20 the break runs along the weakening line 21 and does not run out of it.
  • two circular tear-open parts 20 are arranged, one of which is provided for forming a pouring opening and the other for forming a ventilation opening.
  • the diameter of the circular weakening line 21 is greater than that of a drinking straw, so that a drinking straw can be placed on the tear-open part 20 and the tear-open part 20 can be broken out of the lid mirror by applying pressure, the middle metal layer 15 and the inner plastic layer 16 being only a controllable one To offer resistance.
  • this can, as the embodiment according to FIG. 6 shows, bulge outwards.
  • the tear-open part 20 has a teardrop shape.
  • a heat-sealable grip tab 25 made of a plastic plate is welded to the plastic layer 14 by means of a welding field 26 at its narrow end.
  • the line of weakness 21 runs parallel to the fold edge 12 in order to completely remove the cover mirror and additionally forms a drop-like start section 27, to which a grip tab 29 is connected by a welding spot 28.
  • the double lever 30 has a rigid double lever 30 with a breaking edge 31 in register with part of the weakening line 21 in the starting area as a grip tab.
  • the double lever 30 is connected to the outer plastic layer 14 by means of a welding line 32, which is the axis for the double lever 30 forms.
  • a welding line 32 which is the axis for the double lever 30 forms.
  • the lines of weakness can be hot stamped into the strip material used to make the lids prior to forming the lids, or into lids already formed.

Landscapes

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

Abstract

Ein Deckel (11) für einen Verpackungsbehälter hat zum leichten Öffnen ein Aufreißteil (20), das von einer Schwächungslinie (21) umgeben ist. Der Deckel ist aus einem Verbundwerkstoff geformt, der eine äußere Trägerschicht (14) aus Kunststoff, eine mittlere Sperrschicht (15) aus Metallfolie und eine innere Heißsiegelschicht (16) aus einem thermoplastischen Kunststoff aufweist. Die Schwächungslinie (21) ist als Kerbe (22) durch Heißprägen mit einem beheizten Werkzeug in der äußeren Trägerschicht (14) geformt.A lid (11) for a packaging container has a tear-open part (20) for easy opening, which is surrounded by a line of weakness (21). The lid is formed from a composite material, which has an outer carrier layer (14) made of plastic, a middle barrier layer (15) made of metal foil and an inner heat seal layer (16) made of a thermoplastic. The line of weakness (21) is shaped as a notch (22) by hot stamping with a heated tool in the outer carrier layer (14).

Description

Stand der Technik -State of the art -

Die Erfindung geht aus von einem Behälterdeckel nach der Gattung des Hauptanspruchs. Ein beispielsweise durch die EP=A 000 4834 bekannt gewordener Deckel dieser Art besteht aus einer im Spritzgußverfahren aus einem thermoplastischen Material geformtem, verhältnismäßig dicken Trägerschicht mit deren Innenseite ein verhältnismäßig dünnes Aluminium/ Kunststoff-Laminatplättchen als Sperrschicht verbunden ist. Zum leichten öffnen des Deckels ist in der Trägerschicht eine ein Aufreißteil umgebende Schwächungslinie angeordnet, welche die Kunststoffschicht teilweise ganz durchsetzt und welche beim Spritzgießen ausgebildet wird. Ein derartiger Behälterdeckel ist durch die Art der Herstellung teuer. Zunächst wird die Trägerschicht als Außenteil in einer Form spritzgegossen, was sehr langsam und teuer ist. Sodann wird ein Aluminium/Kunststoff-Laminatplättchen mit der Trägerschicht versiegelt. Dazu müssen die Trägerschicht und das Laminatplättchen einzeln zugeführt und positioniert werden. Ferner hat der bekannte Deckel den Nachteil, daß sich beim-Anlegen des Laminatplättchens an dem abgewinkelten Siegelflansch des Deckels Falten bilden, die die Dichtigkeit der mit einem solchen Deckel verschlossenen Behälter verhindern können.The invention relates to a container lid according to the preamble of the main claim. A cover of this type, which has become known, for example, from EP = A 000 4834, consists of a relatively thick carrier layer formed by injection molding from a thermoplastic material, with the inside of which a relatively thin aluminum / plastic laminate plate is connected as a barrier layer. For easy opening of the cover, a weakening line surrounding a tear-open part is arranged in the carrier layer, which partially completely penetrates the plastic layer and which is formed during injection molding. Such a container lid is expensive due to the way it is manufactured. First, the backing layer is made as an outer part in a mold injection molded, which is very slow and expensive. An aluminum / plastic laminate plate is then sealed to the carrier layer. To do this, the carrier layer and the laminate plate must be fed and positioned individually. Furthermore, the known lid has the disadvantage that when the laminate plate is applied, folds form on the angled sealing flange of the lid, which folds can prevent the tightness of the containers sealed with such a lid.

Auch ist durch die DE-AS 20 23 923 ein Behälterdeckel mit einem von Kerblinien umgebenen Aufreißteil bekannt geworden, der aus einem Metall/Kunststoff-Laminat geformt ist. Dieser Deckel hat eine verhältnismäßig dicke Träger- und Sperrschicht aus einer Metallplatte, mit deren Innenseite eine verhältnismäßig dünne Kunststoffschicht als Korrosions- und Schutzschicht verklebt ist. Die den Aufreißteil umgebenden Kerblinien sind bei diesem Deckel in die dicke Metallplatte eingeprägt. Der bekannte Deckel ist wohl steif und dicht, er ist aber wegen seines hohen Metallanteils sehr teuer.Also known from DE-AS 20 23 923 is a container lid with a tear-off part surrounded by score lines, which is formed from a metal / plastic laminate. This lid has a relatively thick carrier and barrier layer made of a metal plate, with the inside of which a relatively thin plastic layer is glued as a corrosion and protective layer. The notch lines surrounding the tear-open part are stamped into the thick metal plate on this cover. The well-known lid is probably stiff and tight, but it is very expensive due to its high metal content.

Es ist daher Aufgabe der Erfindung, einen leicht zu öffnenden Behälterdeckel zu schaffen, der steif, fest und dicht ist und der in einfacher Weise aus einem Laminatstreifen geformt werden kann.It is therefore an object of the invention to provide an easy-to-open container lid that is stiff, strong and tight and that can be easily formed from a laminate strip.

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße Behälterdeckel mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, daß er aus einem handelsüblichen Kunststoff/Metall-Laminatstreifen in großer Stückzahl faltenfrei durch Tiefziehen geformt.und seine Schwächungslinie in einfacher Weise hergestellt werden kann. Je nach der Konfiguration des Deckels können die Schwächungslinien vor oder nach dem Formen in die Kunststoff-Trägerschicht mit einem beheizten Kerbwerkzeug schnell und positionsgenau eingedrückt werden.The container lid according to the invention with the characterizing features of the main claim has the advantage that it is formed from a commercially available plastic / metal laminate strip in large numbers without creasing by deep drawing. And its weakening line can be produced in a simple manner. Depending on the configuration of the cover, the lines of weakness can be pressed quickly and precisely into the plastic carrier layer using a heated notching tool before or after molding.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen des im Hauptanspruch angegebenen Behälterdeckels möglich. Besonders vorteilhaft ist die Anordnung von Wülsten beidseits der Schwächungslinie. Eine derartige Verdickung des Materials ergibt eine gute Führung beim Ausreißen des Aufreißteils und verhindert ein Verlaufen der Reißlinie. Ferner ist es möglich, an der äußeren Trägerschicht eine Grifflasche, die aus einem heißsiegelfähigen Kunststoff besteht oder mit einem solchen beschichtet ist, ohne hohen Aufwand durch Heißsiegelung direkt zu befestigen.The measures listed in the subclaims permit advantageous developments of the container lid specified in the main claim. The arrangement of beads on both sides of the line of weakness is particularly advantageous. Such a thickening of the material provides good guidance when tearing the tear-open part and prevents the tear line from running. It is also possible to have a grip tab on the outer carrier layer, which is made of a heat-sealable plastic exists or is coated with such, without high effort directly attached by heat sealing.

Der erfindungsgemäße Behälterdeckel läßt sich in großer Stückzahl und in einfacher Weise nach einem Verfahren mit den kennzeichnenden Merkmalen des Anspruchs 5 herstellen.The container lid according to the invention can be produced in large numbers and in a simple manner by a method with the characterizing features of claim 5.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen

  • Fig. 1 den oberen Teil eines Behälters mit einem Deckel in schaubildlicher Darstellung,
  • Fig. 2 einen Teil des Behälters und Deckels nach Fig. 1 in vergrößertem Maßstab im Querschnitt in der Ebene II-II der Fig. 1,
  • Fig. 3-5 Behälterdeckel mit verschiedenen Ausbildungen der öffnungseinrichtung in Draufsicht und
  • Fig. 6 einen Teil eines Behälterdeckels in vergrößertem - Maßstab im Querschnitt.
Embodiments of the invention are shown in the drawing and explained in more detail in the following description. Show it
  • 1 shows the upper part of a container with a lid in a diagrammatic representation,
  • 2 shows part of the container and lid according to FIG. 1 on an enlarged scale in cross section in the plane II-II of FIG. 1,
  • Fig. 3-5 container lid with different designs of the opening device in plan view and
  • Fig. 6 shows part of a container lid on an enlarged scale in cross section.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Ein Verpackungsbehälter mit einem Rumpf 10 aus einem mehrschichtigen Packstoff ist an seiner oberen Öffnung mit einem Deckel 11 verschlossen, der zum Entnehmen des Inhalts eine leicht bedienbare öffnungseinrichtung hat. Rumpf 10 und Deckel 11 haben einen Grundriß in Gestalt eines Quadrats mit abgerundeten Ecken. Der Deckel 11 hat einen U-förmigen Randfalz 12, der den öffnungsrand des Rumpfes 10 umgreift und mit diesem versiegelt oder verschweißt ist. Er ist durch Tiefziehen oder Tiefen geformt.A packaging container with a body 10 made of a multilayer packaging material is closed at its upper opening with a lid 11 which has an easy-to-use opening device for removing the contents. The fuselage 10 and lid 11 have a plan in the form of a square with rounded corners. The cover 11 has a U-shaped edge fold 12 which engages around the opening edge of the fuselage 10 and is sealed or welded to it. It is formed by deep drawing or deep drawing.

Für die Herstellung des Deckels 11 wird ein mehrschichtiger Verbundwerkstoff verwendet, der eine äußere Schicht 14 aus Kunststoff, eine mittlere Schicht 15 aus Metall, vorzugsweise Aluminium und eine innere Schicht 16 aus einem heißsiegelbaren Kunststoff hat. Die einzelnen Schichten können mittels eines Kaschierklebers miteinander verbunden sein. Die äußere Schicht 14, die als Trägerschicht dem Deckel seine Steifigkeit und Festigkeit verleiht, ist etwa 100 bis 400 µm, vorzugsweise 200 µm dick und besteht aus einem thermoplastischen Kunststoff wie Polyvinylchlorid (PVC), Polyester (PETP), Polystyrol (PS), Polycarbonat (PC) od. dgl. Die mittlere Schicht 15, die für eine hohe Dichtigkeit des Deckels beiträgt, besteht aus einer Aluminium- oder Stahlfolie einer Dicke von 20 bis 40/um. Die innere Schicht 16, die zum Heißsiegeln oder Verschweißen mit dem Rumpf 10 dient und als Isolierschicht wirkt, hat eine Dicke von etwa 50/um und besteht aus Polyäthylen (PE), Polypropylen (PP), Polyvinylidenchlorid (PVDC), Polyester (PETP) oder auch aus einem Heißsiegellack.A multilayer composite material is used for the production of the cover 11, which has an outer layer 14 made of plastic, a middle layer 15 made of metal, preferably aluminum and an inner layer 16 made of a heat-sealable plastic. The individual layers can be connected to one another by means of a lamination adhesive. The outer layer 14, which gives the lid its stiffness and strength as a carrier layer, is about 100 to 400 microns, preferably 200 microns thick and consists of a thermoplastic such as polyvinyl chloride (PVC), polyester (PETP), polystyrene (PS), polycarbonate (PC) or the like. The middle layer 15, which contributes to a high tightness of the cover, consists of an aluminum or steel foil with a thickness of 2 0 to 40 / um. The inner layer 16, which is used for heat sealing or welding to the body 10 and acts as an insulating layer has a thickness of about 50 / um and consists of polyethylene (PE), polypropylene (PP), polyvinylidene chloride (PVDC), polyester (PETP) or from a heat seal lacquer.

Die öffnungseinrichtung im Deckel 11 hat einen austrennbaren Aufreißteil 20, der von einer Schwächungslinie 21 umgeben ist. Der Aufreißteil 20 kann verschiedene Formen aufweisen, beispielsweise eine Kreisfläche (Fig. 1) zum Einsetzen eines Trinkhalms, Tropfenform (Fig. 2), oder eine dem Deckelspiegel angepaßte Vollaufreißfläche (Fig. 4 und 5).The opening device in the cover 11 has a removable tear-open part 20 which is surrounded by a weakening line 21. The tear-open part 20 can have various shapes, for example a circular area (FIG. 1) for inserting a drinking straw, teardrop shape (FIG. 2), or a full tear-open area adapted to the lid level (FIGS. 4 and 5).

Die Schwächungslinie 21 ist lediglich in der äußeren Trägerschicht 14 angeordnet und durchsetzt deren Dicke in Form einer Kerbe 22 völlig oder nahezu völlig. Die Kerbe 22 wird in die Trägerschicht 14 mittels eines beheizten Kerbwerk- 'zeuges heißgeprägt, wobei unter der Einwirkung von Druck und Hitze Kunststoff aufschmilzt und verdrängt wird. Dabei bilden sich beidseits der Kerbe 22 der Schwächungslinie 21 über die Ebene der Oberseite der Trägerschicht 14 vorstehende Wülste 23, 24 (Fig. 2 und 6). Die durch die Wülste 23, 24 hergestellte Verdickung der Trägerschicht 14 neben der Kerbe 22 trägt dazu bei, daß beim Ausbrechen oder Ausreißen des Aufreißteils 20 der Bruch entlang der Schwächungslinie 21 läuft und nicht aus dieser verläuft.The weakening line 21 is only arranged in the outer carrier layer 14 and penetrates its thickness in the form of a notch 22 completely or almost completely. The notch 22 is hot-stamped into the carrier layer 14 by means of a heated notching tool, plastic being melted and displaced under the action of pressure and heat. In this case, beads 23, 24 protruding on both sides of the notch 22 of the weakening line 21 over the plane of the top of the carrier layer 14 (FIGS. 2 and 6). The thickening of the carrier layer 14 next to the notch 22 produced by the beads 23, 24 contributes to the fact that when the Tear-off part 20 the break runs along the weakening line 21 and does not run out of it.

Bei dem Ausführungsbeispiel nach Fig. 1 und 2 sind zwei kreisförmige Aufreißteile 20 angeordnet, von denen eines zum Bilden einer Ausgießöffnung und das andere zum Bilden einer Belüftungsöffnung vorgesehen sind. Der Durchmesser der kreisförmigen Schwächungslinie 21 ist größer als der eines Trinkhalms, so daß ein Trinkhalm auf den Aufreißteil 20 aufgesetzt und durch Ausüben von Druck der Aufreißteil 20 aus dem Deckelspiegel ausgebrochen werden kann, wobei die mittlere Metallschicht 15 und die innere Kunststoffschicht 16 lediglich einen beherrschbaren Widerstand leisten. Zum Versteifen des Aufreißteils 20 kann dieser, wie das Ausführungsbeispiel nach Fig. 6 zeigt, nach außen ausgewölbt sein.In the embodiment according to FIGS. 1 and 2, two circular tear-open parts 20 are arranged, one of which is provided for forming a pouring opening and the other for forming a ventilation opening. The diameter of the circular weakening line 21 is greater than that of a drinking straw, so that a drinking straw can be placed on the tear-open part 20 and the tear-open part 20 can be broken out of the lid mirror by applying pressure, the middle metal layer 15 and the inner plastic layer 16 being only a controllable one To offer resistance. To stiffen the tear-open part 20, this can, as the embodiment according to FIG. 6 shows, bulge outwards.

Bei dem Ausführungsbeispiel nach Fig. 3 hat der Aufreißteil 20 eine Tropfenform. Zum Ausreißen des Aufreißteils 20 ist an dessen schmalem Ende eine heißsiegelbare Grifflasche 25 aus einem Kunststoffplättchen mittels eines Schweißfeldes 26 mit der Kunststoffschicht 14 verschweißt.3, the tear-open part 20 has a teardrop shape. To tear off the tear-open part 20, a heat-sealable grip tab 25 made of a plastic plate is welded to the plastic layer 14 by means of a welding field 26 at its narrow end.

Beim Deckel 11 nach Fig. 4 läuft zum vollständigen Austrennen des Deckelspiegels die Schwächungslinie 21 parallel nahe dem Falzrand 12 und bildet zusätzlich einen tropfenartigen Startabschnitt 27, mit dem durch einen Schweißpunkt 28 eine Grifflasche 29 verbunden ist.In the case of the cover 11 according to FIG. 4, the line of weakness 21 runs parallel to the fold edge 12 in order to completely remove the cover mirror and additionally forms a drop-like start section 27, to which a grip tab 29 is connected by a welding spot 28.

Das Ausführungsbeispiel nach Fig. 5 hat im Startbereich als Grifflasche einen steifen Doppelhebel 30 mit einer Brechkante 31 in Deckung mit einem Teil der Schwächungslinie 21. Der Doppelhebel 30 ist mit der äußeren Kunststoffschicht 14 mittels einer Schweißlinie 32 verbunden, die die Achse für den Doppelhebel 30 bildet. Beim Hochziehen des freien, längeren Armes 33, der dem kürzeren Arm 34 mit der Brechkante 31 gegenüberliegt, wird die Schwächungslinie 21 im Bereich der-Brechkante 31 nach innen angerissen. Beim weiteren Ziehen an dem Doppelhebel 30 wird dann der gesamte Aufreißteil 20 aus dem Deckel 11 ausgetrennt.5 has a rigid double lever 30 with a breaking edge 31 in register with part of the weakening line 21 in the starting area as a grip tab. The double lever 30 is connected to the outer plastic layer 14 by means of a welding line 32, which is the axis for the double lever 30 forms. When the free, longer arm 33, which is opposite the shorter arm 34 with the breaking edge 31, is pulled up, the weakening line 21 is torn inward in the region of the breaking edge 31. When the double lever 30 is pulled further, the entire tear-open part 20 is then separated from the cover 11.

Vorhergehend sind einige Ausführungsbeispiele für die Gestaltung des Aufreißteils, der von der heißgekerbten Schwächungslinie umgeben ist/erläutert. Im Rahmen der Erfindung sind jedoch auch andere Gestaltungsformen möglich, darunter auch solche, bei denen die Schwächungslinie nicht in sich geschlossen ist, so daß der Aufreißteil mit dem übrigen Teil des Deckels aus Umweltschutzgründen verbunden bleibt. Ferner ist zur Herstellung eines Deckels nach der Erfindung ein Verbundwerkstoff mit drei Schichten angegeben. Im Rahmen der Erfindung ist je-- doch auch die Verwendung von Verbundwerkstoffen mit anderem Aufbau möglich, bei dem jedoch die Trägerschicht aus einem thermoplastischen Kunststoff besteht und die Schmelztemperatur der angrenzenden Schicht höher ist als die der Trägerschicht.Previous some embodiments for the design direction of the breaking, which is surrounded by the weakened line heißgekerbten / explained. However, other design forms are also possible within the scope of the invention, including those in which the line of weakness is not self-contained, so that the tear-open part remains connected to the remaining part of the cover for environmental reasons. Furthermore, a composite material with three layers is specified for the production of a cover according to the invention. However, the use of composite materials with others is also within the scope of the invention Construction possible, in which, however, the carrier layer consists of a thermoplastic material and the melting temperature of the adjacent layer is higher than that of the carrier layer.

Die Schwächungslinien können in das zur Herstellung der Deckel verwendete Streifenmaterial vor dem Formen der Deckel, oder in bereits geformte Deckel heißgeprägt werden.The lines of weakness can be hot stamped into the strip material used to make the lids prior to forming the lids, or into lids already formed.

Claims (5)

1. Behälterdeckel mit öffnungseinrichtung mit einer äußeren, dicken Trägerschicht aus einem thermoplastischen Kunststoff und mit einer inneren, mit einem Behälterrumpf verschweißbaren Siegelschicht, in dessen Trägerschicht eine einen Aufreißteil zumindest teilweise umgebende Schwächungslinie angeordnet ist, dadurch gekennzeichnet, daß der Behälterdeckel (11) aus einem Verbundwerkstoff geformt ist und daß die Schwächungslinie (21) in der Trägerschicht (14) des Verbundwerkstoffes als heißgeprägte Kerbe (22) ausgebildet ist.1. Container lid with opening device with an outer, thick carrier layer made of a thermoplastic and with an inner sealing layer weldable to a container body, in the carrier layer of which a tear line at least partially surrounding a tear line is arranged, characterized in that the container lid (11) consists of a Composite material is formed and that the weakening line (21) in the carrier layer (14) of the composite material is designed as a hot-stamped notch (22). 2. Behälterdeckel nach Anspruch 1, dadurch gekennzeichnet, daß die Kerbe (22) die Trägerschicht (14) völlig oder nahezu völlig durchsetzt. ,2. Container lid according to claim 1, characterized in that the notch (22) passes through the carrier layer (14) completely or almost completely. , 3. Behälterdeckel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in der Trägerschicht (14) beidseits der Kerbe (22) Wülste (23, 24) angeordnet sind, die sich über die Ebene der Oberseite des Deckels (11) erheben.3. Container lid according to claim 1 or 2, characterized in that in the carrier layer (14) on both sides of the notch (22) beads (23, 24) are arranged which rise above the level of the top of the lid (11). 4. Behälterdeckel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß an dem von der Kerbe (22) umgebenen Aufreißteil (20) eine Grifflasche (25, 29, 30) angesiegelt ist.4. Container lid according to one of claims 1 to 3, characterized in that a grip tab (25, 29, 30) is sealed to the tear-open part (20) surrounded by the notch (22). 5. Verfahren zum Herstellen eines Behälterdeckels mit einer äußeren, dicken Trägerschicht aus einem thermoplastischen Kunststoff und mit einer inneren, mit einem Behälterrumpf verschweißbaren Siegelschicht, in dessen Trägerschicht eine ein Aufreißteil zumindest teilweise umgebende Schwächungslinie angeordnet ist nach einem der'Ansprüche 1 bis 4, dadurch gekennzeichnet, daß bei Verwendung eines Verbundwerkstoffes die Schwächungslinie (21) in Form einer Kerbe (22) durch Heißprägen mit einem beheizten Werkzeug in der Trägerschicht (14) gebildet wird.5. A method for producing a container lid with an outer, thick carrier layer made of a thermoplastic and with an inner sealing layer that can be welded to a container body, in whose carrier layer a line of weakness at least partially surrounding a tear-open part is arranged according to one of the 'Claims 1 to 4, thereby characterized in that when a composite material is used, the weakening line (21) is formed in the form of a notch (22) by hot stamping in the carrier layer (14) with a heated tool.
EP83109099A 1982-09-23 1983-09-15 Container closure with an opening device Expired EP0104548B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3235167 1982-09-23
DE19823235167 DE3235167A1 (en) 1982-09-23 1982-09-23 CONTAINER LID WITH OPENING DEVICE

Publications (3)

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EP0104548A2 true EP0104548A2 (en) 1984-04-04
EP0104548A3 EP0104548A3 (en) 1985-07-03
EP0104548B1 EP0104548B1 (en) 1987-06-03

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Family Applications (1)

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EP83109099A Expired EP0104548B1 (en) 1982-09-23 1983-09-15 Container closure with an opening device

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US (1) US4533063A (en)
EP (1) EP0104548B1 (en)
JP (1) JPS5978841A (en)
DE (2) DE3235167A1 (en)

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DE3434002A1 (en) * 1984-09-15 1986-03-20 Tetra Pak Developpement S.A., Pully Package for flowable products, having a cover and an inside bag
EP0191525A2 (en) * 1985-02-12 1986-08-20 The Procter & Gamble Company Method of making an easy-open laminated container
FR2583385A1 (en) * 1985-06-15 1986-12-19 Weidenhammer Packungen COMPOSITE MATERIAL BOX
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EP0256477A2 (en) * 1986-08-09 1988-02-24 Showa Denko Kabushiki Kaisha Cover for a can-shaped container
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Publication number Priority date Publication date Assignee Title
EP0129102A3 (en) * 1983-06-15 1985-12-11 Robert Bosch Gmbh Opening arrangement for a lid
EP0129102A2 (en) * 1983-06-15 1984-12-27 Robert Bosch Gmbh Opening arrangement for a lid
FR2567850A1 (en) * 1984-07-20 1986-01-24 Besnier Sa Container with detachable wall section for packaging products
DE3434002A1 (en) * 1984-09-15 1986-03-20 Tetra Pak Developpement S.A., Pully Package for flowable products, having a cover and an inside bag
EP0191525A2 (en) * 1985-02-12 1986-08-20 The Procter & Gamble Company Method of making an easy-open laminated container
EP0191525A3 (en) * 1985-02-12 1988-01-07 The Procter & Gamble Company Easy-open laminated container with optional reclosing means and method of making
FR2583385A1 (en) * 1985-06-15 1986-12-19 Weidenhammer Packungen COMPOSITE MATERIAL BOX
EP0236662A3 (en) * 1986-02-07 1988-10-05 Robert Bosch Gmbh Container lid with opening arrangements
EP0236662A2 (en) * 1986-02-07 1987-09-16 Robert Bosch Gmbh Container lid with opening arrangements
EP0256477A2 (en) * 1986-08-09 1988-02-24 Showa Denko Kabushiki Kaisha Cover for a can-shaped container
EP0256477A3 (en) * 1986-08-09 1990-03-28 Showa Denko Kabushiki Kaisha Cover for a can-shaped container
EP0279486A2 (en) * 1987-02-12 1988-08-24 Shikoku Kakoki Co., Ltd. Sealed beverage container and apparatus for producing same
EP0279486A3 (en) * 1987-02-12 1991-07-24 Shikoku Kakoki Co., Ltd. Sealed beverage container and apparatus for producing same
FR2623169A3 (en) * 1987-11-12 1989-05-19 Nocente Louis Sealed box made of synthetic material
DE202007006230U1 (en) * 2007-04-28 2008-06-19 Hans Kolb Wellpappe Gmbh & Co. Kg Packaging system for three-dimensional bodies and packaged three-dimensional body
WO2011147441A1 (en) * 2010-05-25 2011-12-01 Mondi Ag Film and packaging produced from such a film having an opening aid that is sensitive to compressive force
WO2022051828A1 (en) * 2020-09-10 2022-03-17 Leite Laercio Arrangement for a can and corresponding lid for pouring and directing the packaged liquid product

Also Published As

Publication number Publication date
DE3235167A1 (en) 1984-03-29
US4533063A (en) 1985-08-06
JPS5978841A (en) 1984-05-07
DE3371895D1 (en) 1987-07-09
EP0104548A3 (en) 1985-07-03
EP0104548B1 (en) 1987-06-03

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