EP0033449B1 - Closure to be opened by tearing - Google Patents

Closure to be opened by tearing Download PDF

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Publication number
EP0033449B1
EP0033449B1 EP81100249A EP81100249A EP0033449B1 EP 0033449 B1 EP0033449 B1 EP 0033449B1 EP 81100249 A EP81100249 A EP 81100249A EP 81100249 A EP81100249 A EP 81100249A EP 0033449 B1 EP0033449 B1 EP 0033449B1
Authority
EP
European Patent Office
Prior art keywords
opening
closure
hand grip
side edges
closure member
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
EP81100249A
Other languages
German (de)
French (fr)
Other versions
EP0033449A1 (en
Inventor
Helmut Müller-Kühn
Günter Scharren
Wilfried Kohlmeier
Michael Grillo
Jürgen Rost
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.)
Fried Krupp AG
Original Assignee
Fried Krupp 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 Fried Krupp AG filed Critical Fried Krupp AG
Priority to AT81100249T priority Critical patent/ATE6760T1/en
Publication of EP0033449A1 publication Critical patent/EP0033449A1/en
Application granted granted Critical
Publication of EP0033449B1 publication Critical patent/EP0033449B1/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
    • 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
    • B65D17/506—Rigid or semi-rigid members, e.g. plugs
    • 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
    • B65D2517/001—Action for opening container
    • B65D2517/002—Unusual opening actions
    • 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
    • B65D2517/0031—Reclosable openings
    • B65D2517/0038—Reclosable openings the plug being reinsertable into the opening

Definitions

  • the invention relates to a tear-open lid with a prepared opening in the lid mirror and provided with essentially parallel side edges for releasing the filling material and with a closure part provided with a grip part which is slidably guided along the side edges of the prepared opening and which limits its sliding path with a Stop is provided.
  • a tear-open cover is known in which the cover plate on the side edges of an eccentrically arranged pouring opening is formed by bending and folding into a groove-shaped guide in which the slide part of an opening tab is guided, which is designed with a double lever and is formed with an indentation grip part.
  • the cover plate of the known cover is lifted up slightly at one end of the pouring opening in order to limit the position of the opening tab in one direction.
  • a separate auxiliary opening is initially pushed open by the pushing-in process of the handle part, on the edge of which is caused by the pushing open, the short lever end of the handle part can be supported when the opening tab is moved in the guide formed by the cover plate should.
  • the opening tab on the long sides of the pouring opening is framed by the groove-shaped guide, at the ends of the pouring opening, however, it is only in each case at the bottom or top of the cover plate, so that special measures are required after the mechanical processing of the cover seal the lid at these points - especially for products under pressure or packed in a vacuum.
  • the known lid also has the disadvantage that the container cannot be closed again, so that the contents can get out through the separate auxiliary opening of the tear-open lid when a container tips over.
  • a tear-open cover is known from US Pat. No. 3,952,912, in which a substantially flat tongue provided with a pull tab can be slid in a U-shaped groove or groove arranged around the prepared opening of the cover plate.
  • the tongue is provided with two bulge-shaped depressions which are formed at the bottom.
  • the lid is not resealable because of the flat design of the tongue and the associated lack of rigidity.
  • a tear-open cover is known from US-A-3,200,986, which has a prepared circular opening in the cover mirror and a corresponding closure part made of elastic material.
  • the closure part has a circumferential groove which surrounds the edge of the prepared opening - when the can is closed. The closure part can be inserted into and removed from the lid.
  • This known lid has essentially the disadvantage that the closure part is a separate part when the can is opened, which - carelessly thrown away - increases the pollution and, if it is mistakenly installed, makes it impossible to re-close the can.
  • the present invention is based on the object of designing a tear-open cover of the type mentioned at the outset which seals reliably even in the event of pressure differences and in which the prepared opening for releasing the filling material can be opened without a separate auxiliary opening.
  • the tear-open lid should be able to be closed again and the closure part should remain inseparably connected to the tear-open lid even in the open state.
  • closure part is provided with an uninterrupted circumferential groove corresponding to the shape of the prepared opening and that the area of the prepared opening adjacent to the connection between the closure part and the handle part is provided with auxiliary scoring lines pointing away from the circumference, of which the the auxiliary scribe line closest to the parallel side edges takes a course arranged parallel to the side edge.
  • the design of the tear-open cover according to claim 2 is intended to make it easier to initially lift the region of the closure part connected to the handle part.
  • the cover plate 1 of the cover mirror is shown in sections in the drawing.
  • the cover plate 1 has a punched-out opening 3 which is formed with two essentially parallel side edges 2 - in the case of a beverage can the pouring opening - the ends 4, 5 of which are semicircular.
  • an auxiliary scribe line 6a is connected to an auxiliary scribe line 7 running parallel to the side edges 2.
  • a tongue 8 is defined by the auxiliary scribe lines 6a and 7 of the side edges 2.
  • the opening 3 is closed by a closure part 9 of a closure element 10.
  • the closure part 9 lies with a flat annular surface part 11 on the edge 12 of the cover plate 1.
  • the annular surface part 11 merges inwards and downwards into an annular part which is S-shaped in cross section, the upper section 13 of which forms an outwardly open circumferential groove 14 encompassing the edge 12 of the opening 3, and whose lower section is designed as a flange 15 and represents the transition from the circumferential groove 14 into the base surface 16 of the closure part 9.
  • the cover plate 1 is advantageously clamped firmly between the flange 15 and the flat surface part 11.
  • the underside of the finished tear-open cover with a film (not shown) consisting of a sealing compound.
  • a film (not shown) consisting of a sealing compound.
  • the underside of the surface part 11 or the edge 12 of the opening 3 can also be provided with a rubber coating.
  • the flat annular surface part 11 merges into a further surface 17, which is provided at its edge with a flanged flange 18 and is connected in one direction to a handle part 19.
  • the grip part 19 is designed as a ring.
  • the depth t 1 of the circumferential groove 14 is comparatively small and in any case less than the depth t or t a at the other locations of the circumferential groove.
  • the depth t increases from the minimum value t 1 to the parallel side edges 2, from where the circumferential groove 14 formed by the flange 15 has a uniform depth t a (cf. FIG. 6).
  • the recess 20 In the base surface 16 of the closure part 9 there is a recess 20 with a stop surface 21 pointing towards the connection point between the closure part 9 and the handle part 19.
  • the recess can also be designed as a cylindrical recess.
  • the opening of the opening 3 is initiated in that the closure part 9 with the flange 15 on the side connected to the handle part 19 is raised above the cover plate 1 (cf. FIG. 4).
  • the circumferential groove 14 has the smallest depth t 1 at this point.
  • the auxiliary scoring lines -6, 6a allow the surface parts 22 of the cover plate 1 located between them to spread and go up at the edge of the opening 3.
  • the closure part 9 is pulled in the longitudinal direction of the opening 3, the parallel sides of the circumferential groove 14 being longitudinal slide parallel side edges 2 of opening 3.
  • the tongue 8 given by the auxiliary score lines 6a and 7 yields during the opening process and enables the flange 15 forming the circumferential groove 14 to get up from the underside of the cover plate 1.
  • the stop surface 21 limits the path of the closure element 10 when it abuts against the edge of the end 5 of the opening 3 and thus prevents the closure element 9 from being separated from the cover.
  • a ventilation opening is provided at the point designated by 23, which z. B. when pouring the filling material through the free cross section of the opening 3rd proves to be advantageous.
  • the arrangement of the flanged flange 18 on the entire edge of the closure element 10 ensures that injuries are avoided even on separately occurring closure elements.
  • the closure element 10 can be pushed back after opening. In this way an at least provisional reclosure can be achieved.
  • connection between the closure part 9 and the grip part 19 can advantageously also be formed by a bendable region 24 of the surface part 11 or the further surface 17.
  • the bendable region 24 extends over the entire width of the closure element 10.
  • the flange flange 18 is interrupted in the bendable region 24 for this purpose.
  • the cover mirror has a raised, transversely arranged bead 25 in the cover plate 1 near the end 5.
  • the grip part 19, which in its initial position lies essentially on the closure part 9, also has a bead 26 in its surface 17 '.
  • the articulated connection between the closure part 9 and the grip part 19 exists only over part of the width of the closure element 10 in the middle.
  • the grip part 19 is formed with an extension 27, which represents the shorter lever arm of the grip part 19 designed as a double-armed lever.
  • the extension 27 is supported against the bead 25 arranged in the cover plate 1, so that not only the lifting of the closure part 10 from the opening 3 is ensured, but also the initial sliding of the closure part 9 along the edges 2 of the opening 3 is facilitated.
  • the sliding of the closure part 10 can be further facilitated by the fact that the distance f between the parallel side edges 2 and the bottom of the circumferential groove 14 - as seen from the connection point between the closure part 9 and the grip part 19 - increases (see FIG. 8).
  • the increase in the distance f can advantageously be of the order of magnitude of 1 mm to a side length of 100 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

A pop-top lid with a pre-formed opening which serves for dispensing the contents, is located in the lid plane, and is provided with essentially parallel side edges. The lid also includes a closure part which is provided with a tab and is slidably guided along the side edges of the pre-formed opening. The closure part is provided with an uninterrupted peripheral groove which corresponds to the shape of the pre-formed opening; to limit the slide path of the closure part, an abutment or stop is provided.

Description

Die Erfindung betrifft einen Aufreißdeckel mit einer im Deckelspiegel befindlichen und mit im wesentlichen parallelen Seitenkanten versehenen, vorbereiteten Öffnung zur Freigabe des Füllgutes und mit einem mit einem Griffteil versehenen Verschlußteil, das längs der Seitenkanten der vorbereiteten Öffnung gleitbar geführt und das zur Begrenzung seines Gleitweges mit einem Anschlag versehen ist.The invention relates to a tear-open lid with a prepared opening in the lid mirror and provided with essentially parallel side edges for releasing the filling material and with a closure part provided with a grip part which is slidably guided along the side edges of the prepared opening and which limits its sliding path with a Stop is provided.

Aus der DE-A-2342423 ist ein Aufreißdeckel bekannt, bei dem das Deckelblech an den Seitenkanten einer außermittig angeordneten Ausgießöffnung durch Umbiegen und Falten zu einer nutfömigen Führung umgeformt ist, in der das Schieberteil einer Öffnungslasche geführt ist, die mit einem als Doppelhebel ausgebildeten und mit einem Eindrückvorsprung versehenen Griffteil ausgebildet ist. Das Deckelblech des bekannten Deckels ist an dem einen Ende der Ausgießöffnung etwas nach oben gehoben, um die Lage der Öffnungslasche in der einen Richtung zu begrenzen. Zum Öffnen der Ausgießöffnung wird bei dem bekannten Deckel zunächst eine separate Hilfsöffnung durch den Eindrückvorgang des Griffteils nach innen aufgestoßen, an deren durch das Aufstoßen entstandenen Kante das kurze Hebelende des Griffteils abgestützt werden kann, wenn die Öffnungslasche in der durch das Deckelblech gebildeten Führung bewegt werden soll.From DE-A-2342423 a tear-open cover is known in which the cover plate on the side edges of an eccentrically arranged pouring opening is formed by bending and folding into a groove-shaped guide in which the slide part of an opening tab is guided, which is designed with a double lever and is formed with an indentation grip part. The cover plate of the known cover is lifted up slightly at one end of the pouring opening in order to limit the position of the opening tab in one direction. To open the pouring opening in the known lid, a separate auxiliary opening is initially pushed open by the pushing-in process of the handle part, on the edge of which is caused by the pushing open, the short lever end of the handle part can be supported when the opening tab is moved in the guide formed by the cover plate should.

Bei dem bekannten Deckel ist die Öffnungslasche an den Längsseiten der Ausgießöffnung durch die nutförmige Führung eingefaßt, an den Enden der Ausgießöffnung liegt sie dagegen nur jeweils unten bzw. oben am Deckelblech an, so daß es nach der mechanischen Bearbeitung des Deckels besonderer Maßnahmen bedarf, um den Deckel an diesen Stellen - insbesondere für unter Druck stehende bzw. in Vakuum verpackte Füllgüter - abzudichten. Dem bekannten Deckel haftet weiterhin der Nachteil an, daß der Behälter nicht wieder verschließbar ist, so daß das Füllgut beim Umkippen eines Behälters durch die separate Hilfsöffnung des Aufreißdeckels nach außen gelangen kann.In the known lid, the opening tab on the long sides of the pouring opening is framed by the groove-shaped guide, at the ends of the pouring opening, however, it is only in each case at the bottom or top of the cover plate, so that special measures are required after the mechanical processing of the cover seal the lid at these points - especially for products under pressure or packed in a vacuum. The known lid also has the disadvantage that the container cannot be closed again, so that the contents can get out through the separate auxiliary opening of the tear-open lid when a container tips over.

Weiterhin ist aus der US-A-3 952 912 ein Aufreißdeckel bekannt, bei dem eine mit einer Zuglasche versehene, im wesentlichen flache Zunge in einer U-förmig um die vorbereitete Öffnung des Deckelblechs angeordnete Rille oder Nut gleitbar ist. Zur Begrenzung ihres Gleitweges ist die Zunge mit zwei nach unten ausgebildeten beulenförmigen Vertiefungen versehen. Auch bei diesem Aufreißdeckel besteht das Problem des Abdichtens an dem offenen Ende der Nut. Im übrigen ist der Deckel wegen der flachen Ausbildung der Zunge und deren damit verbundenen fehlenden Steifigkeit nicht wiederverschließbar.Furthermore, a tear-open cover is known from US Pat. No. 3,952,912, in which a substantially flat tongue provided with a pull tab can be slid in a U-shaped groove or groove arranged around the prepared opening of the cover plate. To limit its glide path, the tongue is provided with two bulge-shaped depressions which are formed at the bottom. With this tear-open cover there is also the problem of sealing at the open end of the groove. In addition, the lid is not resealable because of the flat design of the tongue and the associated lack of rigidity.

Schließlich ist aus der US-A-3 200 986 ein Aufreißdeckel bekannt, der eine vorbereitete kreisrunde Öffnung im Deckelspiegel und ein entsprechendes Verschlußteil aus elastischem Material aufweist. Das Verschlußteil weist eine Umfangsnut auf, die den Rand der vorbereiteten Öffnung - bei verschlossener Dose - umfaßt. Das Verschlußteil kann in den Deckel eingesetzt und wieder daraus entfernt werden.Finally, a tear-open cover is known from US-A-3,200,986, which has a prepared circular opening in the cover mirror and a corresponding closure part made of elastic material. The closure part has a circumferential groove which surrounds the edge of the prepared opening - when the can is closed. The closure part can be inserted into and removed from the lid.

Diesem bekannten Deckel haftet im wesentlichen der Nachteil an, daß das Verschlußteil bei geöffneter Dose ein separates Teil darstellt, das - achtlos weggeworfen - die Umweltverschmutzung erhöht, und das, wenn es versehentlich verlegt wird, ein Wiederverschließen der Dose unmöglich macht.This known lid has essentially the disadvantage that the closure part is a separate part when the can is opened, which - carelessly thrown away - increases the pollution and, if it is mistakenly installed, makes it impossible to re-close the can.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Aufreißdeckel der eingangs genannten Art zu gestalten, der auch bei Druckunterschieden zuverlässig dichtet, und bei dem ein Öffnen der vorbereiteten Öffnung zur Freigabe des Füllgutes ohne separate Hilfsöffnung möglich ist. Außerdem soll der Aufreißdeckel wieder verschließbar sein und das Verschlußteil auch im geöffneten Zustand ständig mit dem Aufreißdeckel untrennbar verbunden bleiben.The present invention is based on the object of designing a tear-open cover of the type mentioned at the outset which seals reliably even in the event of pressure differences and in which the prepared opening for releasing the filling material can be opened without a separate auxiliary opening. In addition, the tear-open lid should be able to be closed again and the closure part should remain inseparably connected to the tear-open lid even in the open state.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Verschlußteil mit einer ununterbrochenen, der Form der vorbereiteten Öffnung entsprechenden Umfangsnut versehen ist und daß der der Verbindung zwischen dem Verschlußteil und dem Griffteil benachbarte Bereich der vorbereiteten Öffnung mit vom Umfang wegweisenden Hilfsritzlinien versehen ist, von denen die den parallelen Seitenkanten jeweils am nächsten kommende Hilfsritzlinie einen parallel zu der Seitenkante angeordneten Verlauf nimmt. Mit dieser Ausbildung des Aufreißdeckels wird sowohl eine gute Abdichtung zwischen dem Deckelblech und dem Verschlußteil erreicht, die durch einen Überzug eines Dichtmaterials noch erhöht werden kann, als auch eine leichtes Anheben des Verschlußteils beim anfänglichen Öffnen und ein gutes Heraustreten des Verschlußteils aus dem Deckelblech beim weiteren Freigeben der vorbereiteten Öffnung im Deckelblech.This object is achieved in that the closure part is provided with an uninterrupted circumferential groove corresponding to the shape of the prepared opening and that the area of the prepared opening adjacent to the connection between the closure part and the handle part is provided with auxiliary scoring lines pointing away from the circumference, of which the the auxiliary scribe line closest to the parallel side edges takes a course arranged parallel to the side edge. With this design of the tear-open cover, a good seal between the cover plate and the closure part is achieved, which can be increased by a coating of a sealing material, as well as a slight lifting of the closure part at the initial opening and a good emergence of the closure part from the cover plate during the further Clear the prepared opening in the cover plate.

Durch die Ausbildung des Aufreißdeckels nach Anspruch 2 soll ein anfängliches Anheben des mit dem Griffteil verbundenen Bereichs des Verschlußteils noch erleichtert werden.The design of the tear-open cover according to claim 2 is intended to make it easier to initially lift the region of the closure part connected to the handle part.

Ausführungsbeispiele des Gegenstandes der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher erläutert. Es zeigen

  • Figur 1 einen Aufreißdeckel mit einem Verschlußelement nach einer Ausführungsform der Erfindung in einem ausschnittweisen Längsschnitt
  • Figur 2 das Verschlußelement nach Fig. 1 in der Draufsicht
  • Figur 3 die vorgefertigte Öffnung im Deckelspiegel des Aufreißdeckels in der Draufsicht
  • Figur 4 das Verschlußelement beim Beginn des Öffnens in einem auszugsweisen Längsschnitt
  • Figur 5 den Aufreißdeckel in geöffnetem Zustand in einem teilweisen Längsschnitt längs der Linie V-V in Fig. 2
  • Figur 6 die Grundfläche des Verschlußteils mit an den Seitenkanten gleichmäßig ausgebildetem Flansch an der Umfangsnut von unten
  • Figur 7 die Grundfläche des Verschlußteils mit einem sich am Umfang stetig veränderndem Flansch an der Umfangsnut von unten
  • Figur 8 das in Höhe der Umfangsnut geschnittene Verschlußelement nach einer Ausführungsform der Erfindung und die vorgefertigte Öffnung im Deckelblech von unten
  • Figur 9 ein Verschlußelement mit einem umgebogenen Griffteil in der Draufsicht
  • Figur 10 das Verschlußelement nach Fig. 9 unmittelbar vor dem Öffnen im Querschnitt
  • Figur 11 ein Verschlußelement mit einem mit einer Verlängerung versehenen, umgebogenen Griffteil in der Draufsicht
  • Figur 12 das Verschlußelement nach Fig. 11 während des Öffnens im Querschnitt.
Embodiments of the object of the invention are shown in the drawing and are explained in more detail below. Show it
  • Figure 1 shows a tear-open cover with a closure element according to an embodiment of the invention in a partial longitudinal section
  • Figure 2 shows the closure element of FIG. 1 in plan view
  • Figure 3 shows the prefabricated opening in the cover mirror of the tear-open cover in plan view
  • Figure 4 shows the closure element at the start of opening in a partial longitudinal section
  • Figure 5 shows the tear-open lid in the closed was in a partial longitudinal section along the line VV in Fig. 2nd
  • Figure 6 shows the base of the closure member with a uniformly formed on the side edges flange on the circumferential groove from below
  • Figure 7 shows the base of the closure member with a continuously changing flange on the circumferential groove from below
  • 8 shows the closure element cut at the level of the circumferential groove according to one embodiment of the invention and the prefabricated opening in the cover plate from below
  • Figure 9 shows a closure element with a bent handle part in plan view
  • Figure 10 shows the closure element according to Fig. 9 immediately before opening in cross section
  • Figure 11 shows a closure element with an extended, bent handle part in plan view
  • 12 shows the closure element according to FIG. 11 in cross section during opening.

Von dem Aufreißdeckel ist in der Zeichnung das Deckelblech 1 des Deckelspiegels ausschnittsweise dargestellt. Das Deckelblech 1 weist eine mit zwei im wesentlichen parallelen Seitenkanten 2 ausgebildete, ausgestanzte Öffnung 3 - im Falle einer Getränkedose die Ausgießöffnung - auf, deren Enden 4, 5 halbkreisförmig ausgebildet sind. An dem einen Ende (5) sind vom Rand strahlenförmig verlaufende kurze Hilfsritzlinien 6 angeordnet. Beim Übergang des halbkreisförmigen Endes 5 der Öffnung 3 in die Seitenkanten 2 ist jeweils eine Hilfsritzlinie 6a mit einer parallel zu den Seitenkanten 2 verlaufenden Hilfsritzlinie 7 verbunden. Durch die Hilfsritzlinien 6a und 7 die Seitenkanten 2 ist jeweils eine Zunge 8 definiert.In the drawing, the cover plate 1 of the cover mirror is shown in sections in the drawing. The cover plate 1 has a punched-out opening 3 which is formed with two essentially parallel side edges 2 - in the case of a beverage can the pouring opening - the ends 4, 5 of which are semicircular. At one end (5) there are short auxiliary scribe lines 6 running from the edge. At the transition of the semicircular end 5 of the opening 3 into the side edges 2, an auxiliary scribe line 6a is connected to an auxiliary scribe line 7 running parallel to the side edges 2. A tongue 8 is defined by the auxiliary scribe lines 6a and 7 of the side edges 2.

Die Öffnung 3 ist durch ein Verschlußteil 9 eines Verschlußelements 10 verschlossen. Das Verschlußteil 9 liegt mit einem ebenen ringförmigen Flächenteil 11 am Rand 12 des Deckelblechs 1 auf. Das ringförmige Flächenteil 11 geht nach innen und unten in ein im Querschnitt S-förmig gebildetes Ringteil über, dessen oberer Abschnitt 13 eine nach außen offene, den Rand 12 der Öffnung 3 umfassende Umfangsnut 14 bildet, und deren unterer Abschnitt als Flansch 15 ausgebildet ist und den Übergang.von der Umfangsnut 14 in die Grundfläche 16 des Verschlußteils 9 darstellt. Das Deckelblech 1 ist vorteilhafterweise fest zwischen dem Flansch 15 und dem ebenen Flächenteil 11 eingeklemmt. Um die Abdichtung zwischen dem Verschlußteil 9 und dem Deckelblech 1 weiter zu verbessern, ist es vorgesehen, die Unterseite des fertigen Aufreißdeckels mit einem aus einer Dichtmasse bestehenden (nicht dargestellten) Film zu überziehen. Es kann aber auch die Unterseite des Flächenteils 11 oder der Rand 12 der Öffnung 3 mit einer Gummierung versehen sein.The opening 3 is closed by a closure part 9 of a closure element 10. The closure part 9 lies with a flat annular surface part 11 on the edge 12 of the cover plate 1. The annular surface part 11 merges inwards and downwards into an annular part which is S-shaped in cross section, the upper section 13 of which forms an outwardly open circumferential groove 14 encompassing the edge 12 of the opening 3, and whose lower section is designed as a flange 15 and represents the transition from the circumferential groove 14 into the base surface 16 of the closure part 9. The cover plate 1 is advantageously clamped firmly between the flange 15 and the flat surface part 11. In order to further improve the seal between the closure part 9 and the cover plate 1, it is provided to cover the underside of the finished tear-open cover with a film (not shown) consisting of a sealing compound. However, the underside of the surface part 11 or the edge 12 of the opening 3 can also be provided with a rubber coating.

Das ebene ringförmige Flächenteil 11 geht in eine weitere höher gelegene Fläche 17 über, die an ihrem Rand mit einem Bördelflansch 18 versehen und in einer Richtung mit einem Griffteil 19 verbunden ist. Im vorliegenden Ausführungsbeispiel ist das Griffteil 19 als Ring ausgebildet.The flat annular surface part 11 merges into a further surface 17, which is provided at its edge with a flanged flange 18 and is connected in one direction to a handle part 19. In the present exemplary embodiment, the grip part 19 is designed as a ring.

An der Seite, wo das Verschlußteil 9 mit dem Griffteil 19 verbunden ist, ist die Tiefe t1 der Umfangsnut 14 verhältnismäßig gering und jedenfalls geringer als die Tiefe t bzw. ta an den übrigen Stellen der Umfangsnut. Im vorliegenden Ausführungsbeispiel nimmt die Tiefe t von dem Kleinstwert t1 bis zu den parallen Seitenkanten 2 hin zu, von wo an die durch den Flansch 15 gebildete Umfangsnut 14 eine gleichmäßige Tiefe ta aufweist (vgl. Fig. 6). Es ist aber auch möglich, daß die Tiefe von ihrem Kleinstwert t1 bis zu dem Wert ta auf der gegenüberliegenden Seite stetig zunimmt, so daß für die Tiefe t an einer beliebigen Stelle der Umfangsnut 14 des Verschlußteils 9 gilt : t, > t > t, (Vgl. Fig. 7).On the side where the closure part 9 is connected to the handle part 19, the depth t 1 of the circumferential groove 14 is comparatively small and in any case less than the depth t or t a at the other locations of the circumferential groove. In the present exemplary embodiment, the depth t increases from the minimum value t 1 to the parallel side edges 2, from where the circumferential groove 14 formed by the flange 15 has a uniform depth t a (cf. FIG. 6). However, it is also possible for the depth to increase continuously from its minimum value t 1 to the value t a on the opposite side, so that the depth t at any point on the circumferential groove 14 of the closure part 9 is: t,>t> t, (See Fig. 7).

In der Grundfläche 16 des Verschlußteils 9 ist eine Vertiefung 20 mit einer zur Verbindungsstelle zwischen dem Verschlußteil 9 und dem Griffteil 19 weisenden Anschlagfläche 21. Abweichend von der in Fig. 1 dargestellten Ausführungsform kann die Vertiefung auch als zylindrische Vertiefung ausgebildet sein.In the base surface 16 of the closure part 9 there is a recess 20 with a stop surface 21 pointing towards the connection point between the closure part 9 and the handle part 19. In deviation from the embodiment shown in FIG. 1, the recess can also be designed as a cylindrical recess.

Das Öffnen der Öffnung 3 wird dadurch eingeleitet, daß das Verschlußteil 9 mit dem Flansch 15 an der mit dem Griffteil 19 verbundenen Seite über das Deckelblech 1 angehoben wird (vgl. Fig. 4). Um diesen anfänglichen Öffnungsvorgang zu erleichtern, weist die Umfangsnut 14 an dieser Stelle die geringste Tiefe t1 auf. Zudem erlauben die Hilfsritzlinien -6, 6a ein Spreizen und Hochgehen der zwischen diesen gelegenen Flächenteile 22 des Deckelblechs 1 am Rande der Öffnung 3. Nach dem Anheben wird das Verschlußteil 9 in Längsrichtung der Öffnung 3 gezogen, wobei die parallelen Seiten der Umfangsnut 14 längs den parallelen Seitenkanten 2 der Öffnung 3 gleiten. Die durch die Hilfsritzlinien 6a und 7 gegebene Zunge 8 gibt beim Öffnungsvorgang nach und ermöglicht es dem die Umfangsnut 14 bildenden Flansch 15, von der Unterseite des Deckelblechs 1 nach oben zu gelangen. Die Anschlagfläche 21 begrenzt den Weg des Verschlußelements 10, wenn es gegen den Rand des Endes 5 der Öffnung 3 stößt und verhindert so, daß das Verschlußelement 9 vom Deckel getrennt wird.The opening of the opening 3 is initiated in that the closure part 9 with the flange 15 on the side connected to the handle part 19 is raised above the cover plate 1 (cf. FIG. 4). In order to facilitate this initial opening process, the circumferential groove 14 has the smallest depth t 1 at this point. In addition, the auxiliary scoring lines -6, 6a allow the surface parts 22 of the cover plate 1 located between them to spread and go up at the edge of the opening 3. After lifting, the closure part 9 is pulled in the longitudinal direction of the opening 3, the parallel sides of the circumferential groove 14 being longitudinal slide parallel side edges 2 of opening 3. The tongue 8 given by the auxiliary score lines 6a and 7 yields during the opening process and enables the flange 15 forming the circumferential groove 14 to get up from the underside of the cover plate 1. The stop surface 21 limits the path of the closure element 10 when it abuts against the edge of the end 5 of the opening 3 and thus prevents the closure element 9 from being separated from the cover.

Da die Öffnung 3 an ihrem Ende 5 bogenförmig ausgebildet ist und die Grundfläche 16 des Verschlußteils 9 in Höhe der Anschlagfläche 21 einen geraden Querschnitt aufweist, ist bei der mit 23 bezeichneten Stelle eine Belüftungsöffnung gegeben, die sich z. B. beim Ausgießen des Füllgutes durch den freien Querschnitt der Öffnung 3 . als vorteilhaft erweist.Since the opening 3 is arcuate at its end 5 and the base surface 16 of the closure part 9 has a straight cross-section at the height of the stop surface 21, a ventilation opening is provided at the point designated by 23, which z. B. when pouring the filling material through the free cross section of the opening 3rd proves to be advantageous.

Durch die Anordnung des Bördelflanches 18 am ganzen Rand des Verschlußelements 10 wird erreicht, daß Verletzungen sogar an separat vorkommenden Verschlußelementen vermiden .werden.The arrangement of the flanged flange 18 on the entire edge of the closure element 10 ensures that injuries are avoided even on separately occurring closure elements.

Das Verschlußelement 10 kann nach dem Öffnen wieder zurückgeschoben werden. Damit läßt sich ein zumindest provisiorischer Wiederverschluß erzielen.The closure element 10 can be pushed back after opening. In this way an at least provisional reclosure can be achieved.

In Abwandlung des Ausführungsbeispiels nach den Fig. 1 und 2 kann die Verbindung zwischen dem Verschlußteil 9 und dem Griffteil 19 vorteilhafterweise auch durch einen biegbaren Bereich 24 des Flächenteils 11 bzw. der weiteren Fläche 17 gebildet werden. Nach dem Ausführungsbeispiel nach den Fig. 9 und 10 erstreckt sich der biegbare Bereich 24 über die ganze Breite des Verschlußelements 10. Der Bördelflansch 18 ist dazu im biegbaren Bereich 24 unterbrochen. Der Deckelspiegel weist im Deckelblech 1 in der Nähe des Endes 5 eine erhabene, quer angeordnete Sicke 25 auf. Das Griffteil 19, das in seiner Ausgangslage im wesentlichen auf dem Verschlußteil 9 aufliegt, weist in seiner Flache 17' ebenfalls eine Sicke 26 auf. Beim Umbiegen des Griffteils 19 in die in Fig. 9 strichpunktiert angedeutete Lage kommen beide Sicken 26, 25 aufeinander (vgl. Fig. 10). Dabei stellt der Berührungspunkt der beiden Sicken einen Drehpunkt für das - in Bezug auf den Drehpunkt - als doppelarmiger Hebel ausgebildete Griffteil 19 dar. Mit dieser Ausführungsform ist es möglich, das anfängliche Herausheben des Verschlußteils 9 aus der Öffnung 3 zu erleichtern.In a modification of the embodiment according to 1 and 2, the connection between the closure part 9 and the grip part 19 can advantageously also be formed by a bendable region 24 of the surface part 11 or the further surface 17. According to the exemplary embodiment according to FIGS. 9 and 10, the bendable region 24 extends over the entire width of the closure element 10. The flange flange 18 is interrupted in the bendable region 24 for this purpose. The cover mirror has a raised, transversely arranged bead 25 in the cover plate 1 near the end 5. The grip part 19, which in its initial position lies essentially on the closure part 9, also has a bead 26 in its surface 17 '. When the handle part 19 is bent into the position indicated by dash-dotted lines in FIG. 9, the two beads 26, 25 come into contact with one another (cf. FIG. 10). The point of contact of the two beads represents a fulcrum for the handle part 19, which is designed as a double-armed lever with respect to the fulcrum.

Nach dem Ausführungsbeispiel gemäß den Fig. 11 und 12 besteht die gelenkige Verbindung zwischen dem Verschlußteil 9 und dem Griffteil 19 nur über einen Teil der Breite des Verschlußelements 10 in der Mitte. Am Rand ist das Griffteil 19 mit einer Verlängerung 27 ausgebildet, die den kürzeren Hebelarm des als doppelarmigen Hebel ausgebildeten Griffteils 19 darstellt. Beim Herumschwenken des Griffteils 19 stützt sich die Verlängerung 27 gegen die im Deckelblech 1 angeordnete Sicke 25 ab, so daß nicht nur das Anheben des Verschlußteils 10 aus der Öffnung 3 sichergestellt wird, sondern auch das anfängliche Gleiten des Verschlußteils 9 längs der Kanten 2 der Öffnung 3 erleichtert wird.According to the exemplary embodiment according to FIGS. 11 and 12, the articulated connection between the closure part 9 and the grip part 19 exists only over part of the width of the closure element 10 in the middle. At the edge, the grip part 19 is formed with an extension 27, which represents the shorter lever arm of the grip part 19 designed as a double-armed lever. When pivoting the handle part 19, the extension 27 is supported against the bead 25 arranged in the cover plate 1, so that not only the lifting of the closure part 10 from the opening 3 is ensured, but also the initial sliding of the closure part 9 along the edges 2 of the opening 3 is facilitated.

Das Gleiten des Verschlußteils 10 kann noch dadurch erleichtert werden, daß der Abstand f zwischen den parallelen Seitenkanten 2 und dem Grund der Umfangsnut 14 - von der Verbindungsstelle zwischen dem Verschlußteil 9 und dem Griffteil 19 gesehen - zunimmt (vgl. Fig. 8). Die Zunahme des Abstandes f kann vorteilhafterweise in der Größenordnung von 1 mm auf 100 mm Seitenlänge liegen.The sliding of the closure part 10 can be further facilitated by the fact that the distance f between the parallel side edges 2 and the bottom of the circumferential groove 14 - as seen from the connection point between the closure part 9 and the grip part 19 - increases (see FIG. 8). The increase in the distance f can advantageously be of the order of magnitude of 1 mm to a side length of 100 mm.

Claims (7)

1. A closure to be opened by tearing comprising a preformed opening (3) in the plane of the closure for emptying the content having substantially parallel side edges (2) and a closure member (9) which is provided with a hand grip (19), is guided to slide along the side edges and is provided with a stop (21) to limit the sliding movement, characterised in that the closure member (9) has an uninterrupted peripheral groove (14) conforming to the shape of the opening (3) and the portion (5) of the opening (3) adjoining the connection between the closure member (9) and the hand grip (19) is provided with auxiliary score lines (6, 6a) directed from the periphery (5) of the opening (3) outwardly, of which those (6a) nearest the parallel side edges (2) take a course parallel to the side edges (2).
2. A closure according to claim 1, characterised in that the peripheral groove (14) has in the region adjoining the hand grip (19) a depth (t1) less than that at the remainder of the periphery.
3. A closure according to claim 1 or claims 2, characterised in that the peripheral groove (14) is formed by a flange (15).
4. A closure according to claim 3, characterised in that the closure member (9) can be lifted up to initiate the opening process by deforming the edge (12) of the opening (3) located in the region of reduced depth (t1) of the peripheral groove (14).
5. A closure according to one of claims 1 to 4, characterised in that the hand grip (19) - formed as a two armed lever - is desposed in its starting position above the closure member and is connected to the closure member (19) by a bendable portion (24) and the cover sheet (1) has a raised transverse rib (25).
6. A closure according to claim 5, characterised in that the hand grip (19) has a transverse rib (26) - raised in its starting position - which when the hand grip (19) is bent towards the cover sheet (1) comes into abutment with the transverse rib (25) in the cover sheet (1).
7. A closure according to claim 5, in which the shorter lever arm (27) of the hand grip (19) projects over the bendable region (24) and - after bending over of the hand grip from its starting position - can be supported by the rib (25) on the cover sheet (1).
EP81100249A 1980-02-02 1981-01-15 Closure to be opened by tearing Expired EP0033449B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100249T ATE6760T1 (en) 1980-02-02 1981-01-15 TEAR LID.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3003804 1980-02-02
DE3003804A DE3003804C2 (en) 1980-02-02 1980-02-02 Tear-off lid

Publications (2)

Publication Number Publication Date
EP0033449A1 EP0033449A1 (en) 1981-08-12
EP0033449B1 true EP0033449B1 (en) 1984-03-21

Family

ID=6093568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100249A Expired EP0033449B1 (en) 1980-02-02 1981-01-15 Closure to be opened by tearing

Country Status (8)

Country Link
US (1) US4356929A (en)
EP (1) EP0033449B1 (en)
JP (1) JPS56123245A (en)
AT (1) ATE6760T1 (en)
BR (1) BR8100498A (en)
CA (1) CA1155423A (en)
DE (1) DE3003804C2 (en)
ES (1) ES264744Y (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3142837C1 (en) * 1981-10-29 1983-04-21 Rolf 4350 Recklinghausen Florczyk Container
USRE32927E (en) * 1983-10-31 1989-05-23 Reynolds Metals Company Resealable container closure
US4574975A (en) * 1984-09-20 1986-03-11 Reynolds Metals Company Resealable container closure
US4705186A (en) * 1986-11-19 1987-11-10 The Coca-Cola Company Can end assembly
US4793510A (en) * 1987-07-13 1988-12-27 Reynolds Metals Company Resealable container closure
US5035343A (en) * 1989-12-13 1991-07-30 The City Of Hope Easy-open and reclosable container
US5145086A (en) * 1991-05-17 1992-09-08 Krause Arthur A Captive tear tab with protective means for container opening
US5535911A (en) * 1994-08-29 1996-07-16 Cortez; Alejandro Opening device for cans
US8215513B1 (en) 2007-08-20 2012-07-10 Popseal LLC. Self-closing resealable can end
USD637489S1 (en) 2010-12-10 2011-05-10 Pactiv Corporation Pull grip feature of a container lid
USD638704S1 (en) 2010-12-10 2011-05-31 Pactiv Corporation Container lid
JP5634917B2 (en) * 2011-03-07 2014-12-03 昭和アルミニウム缶株式会社 Can lid and beverage can
DE102013104226B4 (en) * 2013-04-25 2015-09-10 Jürgen Sooth Resealable can end wall, end wall unit and box

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1047110B (en) * 1955-12-19 1958-12-18 Heinrich Brauch Tin can with secured closure made of plastic
US3200986A (en) * 1964-08-19 1965-08-17 Container Corp Removable plug closure with pull loop
US3724728A (en) * 1970-08-05 1973-04-03 Steel Corp Can end with bonded seal slide
US3952912A (en) * 1972-03-02 1976-04-27 Walter Merton Perry Container with attached closure
US3856184A (en) * 1972-08-30 1974-12-24 Crown Cork & Seal Co Easy-opening container closure having a sliding tab
US4023703A (en) * 1975-05-27 1977-05-17 Strobe Carl J Easy-open container with flange push-in member
US4170724A (en) * 1977-01-28 1979-10-09 Waterbury Nelson J Vendable reclosable beverage container
US4162742A (en) * 1978-07-24 1979-07-31 Vogt Kuno J Easy opening top closure member for a container

Also Published As

Publication number Publication date
ES264744U (en) 1982-11-16
ATE6760T1 (en) 1984-04-15
DE3003804C2 (en) 1984-06-20
ES264744Y (en) 1983-08-01
EP0033449A1 (en) 1981-08-12
JPS56123245A (en) 1981-09-28
CA1155423A (en) 1983-10-18
US4356929A (en) 1982-11-02
DE3003804A1 (en) 1981-08-13
BR8100498A (en) 1981-08-18

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