EP0548016A1 - Sealing cap on container for liquid products - Google Patents

Sealing cap on container for liquid products Download PDF

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Publication number
EP0548016A1
EP0548016A1 EP92810970A EP92810970A EP0548016A1 EP 0548016 A1 EP0548016 A1 EP 0548016A1 EP 92810970 A EP92810970 A EP 92810970A EP 92810970 A EP92810970 A EP 92810970A EP 0548016 A1 EP0548016 A1 EP 0548016A1
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EP
European Patent Office
Prior art keywords
pouring
closure
pivot axis
sealing
sealing surfaces
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
EP92810970A
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German (de)
French (fr)
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EP0548016B1 (en
Inventor
Elmar Mock
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.)
Tetra Laval Holdings and Finance SA
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Tetra Laval Holdings and Finance SA
Tetra Alfa Holdings SA
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Publication of EP0548016A1 publication Critical patent/EP0548016A1/en
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    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/746—Spouts formed separately from the container

Definitions

  • the invention is in the field of the packaging industry and relates to a closure unit according to the preamble of the first claim.
  • Closure units preferably made of plastic, consisting of a pouring part with a pouring opening and a closing part closing the pouring opening of the pouring part, are often used on containers for liquids such as metal cans or containers made of coated cardboard for a reclosable opening and for convenient pouring, which are placed in an opening of the container.
  • the two Swiss patent applications No. 2740/91 and 2739/91 describe such closure units.
  • the closure units described are cast using a multi-material injection molding process and consist of at least two materials which differ in at least one property.
  • the aforementioned application document No. 2740/91 requires that the closure unit is always connected as a whole to the container during normal use in such a way that the closure part is not completely removed from the pouring part even when open can be removed.
  • a flexible web or a plurality of webs
  • the disadvantage of this connection between the pouring part (or container) and the closure part is that the closure part does not have a precisely defined position in the open state, so that in addition to a closing movement, a positioning movement is also necessary for the closure. If the closing movement is not carried out exactly, the sealing surfaces on the outside or inside of the pouring opening must be deformed, which means an unnecessary effort.
  • closure units which are cast from one material, also have connecting webs between the pouring part and the closure part.
  • the closure unit is manufactured in the open state and closed before or after assembly on the container.
  • the web connection has the same disadvantages as the connecting webs according to the mentioned application no. 2740/91.
  • closure unit the closure part of which seals well against the pouring part in the closed state and whose closure part remains connected to the pouring part even in the open state, in a position defined in relation to the pouring part such that a single, simple Swivel movement around a swivel axis is sufficient to close the pouring opening.
  • the closure unit should also be designed in such a way that when closing or opening only the zones serving as elastic form-locking means have to be deformed, so that the effort required for opening and closing is a minimum.
  • the closure unit according to the invention has a hinge with the aid of which the closure part can be pivoted to a limited extent about a pivot axis relative to the pouring part.
  • the pivot axis lies essentially on a rectilinear part of the end face of the wall of the pouring opening facing the closure part.
  • the closure unit around the pouring opening has front, inner and / or outer sealing surface pairs, which (in the closed state of the closure unit) each consist of a sealing surface on the pouring part side and a sealing part on the closure part side, the sealing surfaces being designed such that they pivot during the pivoting movement of the closure part not be deformed.
  • the closure unit according to the invention is advantageously produced by the multi-material injection molding process, in which in a first casting step a pre-molded part is cast from a first material, then the mold is at least partially moved or replaced and then the closure unit is finished with a second material, the pre-molded part at least partially serves as a mold. Pairs of sealing surfaces can be cast onto one another with this method, one sealing surface consisting of the first material and the second sealing surface consisting of the second material. The sealed sealing surfaces fit each other very precisely and therefore offer optimal tightness.
  • FIG. 1 shows an exemplary embodiment of the closure unit according to the invention with a pouring part 1 and a closing part 2.
  • the pouring part is firmly connected to a container 3.
  • the closure part is pivotally connected to the pouring part 1 via a hinge 4.
  • Figure shows possible pairs of sealing surfaces for sealing the closed closure unit in section. These are located on the end face of the wall of the pouring opening (A), on the outer surface of the wall (B) and / or on the inside surface of the wall of the pouring opening (C), the end face pairs of sealing faces being essentially perpendicular to an axis running through the pouring spout , the outer and inner run essentially parallel to it. It is easy to see from the figure that the schematically illustrated closure parts can be removed from the pouring parts simply vertically upwards (parallel to the pouring axis). This is different when the closure part is pivoted to open the closure unit.
  • pairs of sealing surfaces shown as running perpendicular to the plane of the paper it is obvious that the closure parts 2 could be pivoted into an open position without difficulty about an axis of rotation that lies outside and above the pouring opening and runs parallel to the plane of the paper.
  • the pivot axis is not in the plane of the paper, but perpendicular to it, for example, it is also obvious that the sealing surfaces of the individual sealing surface pairs come into conflict with one another when the closure part is pivoted, that is to say that they deform one another if their shape is not corrected accordingly .
  • the only pairs of sealing surfaces that are not affected by a swiveling movement, such as by a simple lifting movement, are the front sealing surface pairs A.
  • swivel axes Z are drawn in perpendicular to the plane of the paper, the swivel movement of the closure part with a solid arrow, and the corresponding swivel movements from edge points of the sealing surfaces are indicated by dashed arrows.
  • Figure 2 is oversubscribed in such a way that corresponding pivoting movements are not possible, since where the pivoting sealing surface on the closure part side is closer to the pivot axis than the stationary sealing surface on the pouring part side, the two sealing surfaces come into conflict when they are shaped as shown.
  • the pairs of sealing surfaces In order for the corresponding pivoting movements to be possible without deformation of the pairs of sealing surfaces, the pairs of sealing surfaces must be curved concavely as seen from the pivoting axis, that is, they must curve around the pivoting axis in such a way that in each section perpendicular to the pivoting axis the one furthest away from the pivoting axis Point of the pivoting sealing surface can move along the stationary sealing surface (on a circular arc).
  • FIG. 3 now schematically shows various exemplary embodiments of closure units according to the invention as a top view of the pouring opening.
  • the hinge is symbolically represented by the pivot axis Z.
  • inner (C) or outer (B) sealing surfaces, or none at all, must be corrected, depending on the position relative to the swivel axis.
  • the sealing surfaces (B or C or /) to be corrected are marked on the corresponding wall sections delimiting the pouring opening.
  • FIG. 4 shows a closure unit according to the invention according to FIG. 1 as a top view and as a section according to view F-F of the top view.
  • the closure unit has an outer pair of sealing surfaces B and an end pair of sealing surfaces A.
  • the pair of sealing surfaces has been corrected on the wall areas adjacent to the hinge (pivot axis Z).
  • Figure 5 shows a diagram for the precise configuration of the correction of the sealing surface pairs using a simple example.
  • the figure consists of a projection (below) into a plane in which the pivot axis lies and a projection (above) into a plane in which the pouring axis (not shown) lies and which in the present case is penetrated vertically by the pivot axis Z.
  • the diagram shows the surface that is described for a pivoting movement from that edge of the pivoting sealing surface that completely slides over the stationary sealing surface during a pivoting movement. When the closure unit is closed, this edge has the position a.
  • the points P, Q and R on the edge a move on the tracks P ', Q' and R 'on circular orbits perpendicular to the pivot axis Z, whose diameter p, q and r the distance between the points P, Q and R correspond to the swivel axis.
  • the area formed by the tracks P ', Q', and P ' corresponds to the corrected shape of an outer pair of sealing surfaces, along a wall part which forms an angle a with respect to the pivot axis and, in the uncorrected state, is parallel to the pouring axis.
  • corrected sealing surface pairs are also designed for more complicated wall areas and sealing surface shapes.
  • FIG. 6 now shows in perspective a corrected, outer sealing surface F on the pouring part of a closure unit according to FIG. 1. Since the sealing surface F does not run parallel to the pouring axis, but has a shape tapering towards the pouring opening, the correction is only in one area that is limited by the two dashed lines m and n necessary.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Cartons (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

The sealing cap according to the invention has a pouring part (1) with a pouring aperture and a closure part (2) which is connected to the pouring part (1) so as to be limitedly pivotable about a pivot axis (Z). Passing around the pouring aperture on the inner and/or outer wall of said aperture are sealing surfaces which, in the closed state of the sealing cap, form sealing pairs of sealing surfaces together with corresponding sealing surfaces of the closure part. These pairs of sealing surfaces are at least partially curved with a concave curvature, seen from the pivot axis, so that they do not have to be deformed during the pivoting movement of the closure part (2). <IMAGE>

Description

Die Erfindung liegt auf dem Gebiete der Verpackungsindustrie und betrifft eine Verschlusseinheit gemäss dem Oberbegriff des ersten Patentanspruches.The invention is in the field of the packaging industry and relates to a closure unit according to the preamble of the first claim.

An Gebinden für Müssigkeiten wie beispielsweise Metalldosen oder Behälter aus beschichtetem Karton werden für eine wiederverschliessbare Öffnung und für ein bequemes Ausgiessen oft Verschlusseinheiten, vorzugsweise aus Kunststoff, bestehend aus einem Ausgussteil mit einer Ausgussöffnung und einem die Ausgussöffnung des Ausgussteils verschliessenden Verschlussteil eingesetzt, die in einer Öffnung des Gebindes angebracht werden. Die beiden schweizerischen Patentanmeldungen Nr. 2740/91 und 2739/91 (Anmeldedatum 17.9.91) derselben Anmelderin beschreiben derartige Verschlusseinheiten. Die beschriebenen Verschlusseinheiten werden nach einem Mehrmaterialien-Spritzgussverfahren gegossen und bestehen aus mindestens zwei, sich in mindestens einer Eigenschaft unterscheidenden Materialien.Closure units, preferably made of plastic, consisting of a pouring part with a pouring opening and a closing part closing the pouring opening of the pouring part, are often used on containers for liquids such as metal cans or containers made of coated cardboard for a reclosable opening and for convenient pouring, which are placed in an opening of the container. The two Swiss patent applications No. 2740/91 and 2739/91 (filing date September 17, 1991) by the same applicant describe such closure units. The closure units described are cast using a multi-material injection molding process and consist of at least two materials which differ in at least one property.

In der genannten Anmeldeschrift Nr. 2740/91 wird neben einer guten Dichtigkeit der Verschlusseinheit gefordert, dass für eine bequeme Handhabung die Verschlusseinheit bei normalem Gebrauch immer als Ganzes mit dem Gebinde verbunden sei, derart, dass der Verschlussteil auch in geöffnetem Zustand nicht vollständig vom Ausgussteil entfernt werden kann. Zur Erfüllung dieser Forderung wird ein flexibler Steg (oder mehrere Stege) vorgeschlagen, der den Verschlussteil mit dem Ausgussteil verbindet oder am Verschlussteil angeformt ist und zwischen Gebinde und Ausgussteil festgehalten wird. Der Nachteil dieser Verbindung zwischen Ausgussteil (bzw. Gebinde) und Verschlussteil besteht darin, dass der Verschlussteil im geöffneten Zustand keine genau definierte Position hat, sodass zum Verschliessen neben einer schliessenden Bewegung auch eine positionierende Bewegung notwendig ist. Wenn die schliessende Bewegung nicht ganz genau ausgeführt wird, müssen die Dichtflächen an der Aussen- oder Innenseite der Ausgussöffnung deformiert werden, was einen unnötigen Kraftaufwand bedeutet.In addition to a good tightness of the closure unit, the aforementioned application document No. 2740/91 requires that the closure unit is always connected as a whole to the container during normal use in such a way that the closure part is not completely removed from the pouring part even when open can be removed. To meet this requirement, a flexible web (or a plurality of webs) is proposed, which connects the closure part to the pouring part or is integrally formed on the closure part and is held between the container and the pouring part. The disadvantage of this connection between the pouring part (or container) and the closure part is that the closure part does not have a precisely defined position in the open state, so that in addition to a closing movement, a positioning movement is also necessary for the closure. If the closing movement is not carried out exactly, the sealing surfaces on the outside or inside of the pouring opening must be deformed, which means an unnecessary effort.

Auch bekannte Verschlusseinheiten, die aus einem Material gegossen sind, weisen Verbindungsstege zwischen Ausgussteil und Verschlussteil auf. Die Verschlusseinheit wird in geöffnetem Zustand hergestellt und vor oder nach der Montage am Gebinde geschlossen. Die Stegverbindung weist dieselben Nachteile auf wie die Verbindungsstege gemäss der genannten Anmeldung Nr. 2740/91.Known closure units, which are cast from one material, also have connecting webs between the pouring part and the closure part. The closure unit is manufactured in the open state and closed before or after assembly on the container. The web connection has the same disadvantages as the connecting webs according to the mentioned application no. 2740/91.

Es ist nun die Aufgabe der Erfindung, eine Verschlusseinheitzu schaffen, deren Verschlussteil in geschlossenem Zustand gut gegen den Ausgussteil dichtet und deren Verschlussteil auch in geöffnetem Zustand mit dem Ausgussteil verbunden bleibt und zwar in einer gegenüber dem Ausgussteil derart definierten Stellung, dass eine einzige, einfache Schwenkbewegung um eine Schwenkachse ausreicht, um die Ausgussöffnung zu verschliessen. Die Verschlusseinheit soll zudem derart ausgestaltet sein, dass beim Verschliessen oder Öffnen möglichst nur die als elastische Formschlussmittel dienenden Zonen deformiert werden müssen, sodass der für das Öffnen und Schliessen benötigte Kraftaufwand ein Minimum beträgt.It is now the object of the invention to provide a closure unit, the closure part of which seals well against the pouring part in the closed state and whose closure part remains connected to the pouring part even in the open state, in a position defined in relation to the pouring part such that a single, simple Swivel movement around a swivel axis is sufficient to close the pouring opening. The closure unit should also be designed in such a way that when closing or opening only the zones serving as elastic form-locking means have to be deformed, so that the effort required for opening and closing is a minimum.

Diese Aufgabe wird gelöst durch die Verschlusseinheit gemäss dem kennzeichnenden Teil des unabhängigen Patentanspruches.This object is achieved by the closure unit according to the characterizing part of the independent patent claim.

Die erfindungsgemässe Verschlusseinheit weist ein Scharnier auf, mit Hilfe dessen der Verschlussteil relativ zum Ausgussteil um eine Schwenkachse begrenzt schwenkbar ist. Die Schwenkachse liegt im wesentlichen auf einem geradlinig verlaufenden Teil der dem Verschlussteil zugewendeten Stirnfläche der Wandung der Ausgussöffnung. Als Dichtungsmittel weist die Verschlusseinheit um die Ausgussöffnung stirnseitige, innere und/oder äussere Dichtflächenpaare auf, die (in geschlossenem Zustand der Verschlusseinheit) je aus einer ausgussteilseitigen und einer verschlussteilseitigen Dichtfläche bestehen, wobei die Dichtflächen derart ausgebildet sind, dass sie bei der Schwenkbewegung des Verschlussteiles nicht deformiert werden.The closure unit according to the invention has a hinge with the aid of which the closure part can be pivoted to a limited extent about a pivot axis relative to the pouring part. The pivot axis lies essentially on a rectilinear part of the end face of the wall of the pouring opening facing the closure part. As a sealing means, the closure unit around the pouring opening has front, inner and / or outer sealing surface pairs, which (in the closed state of the closure unit) each consist of a sealing surface on the pouring part side and a sealing part on the closure part side, the sealing surfaces being designed such that they pivot during the pivoting movement of the closure part not be deformed.

Die erfindungsgemässe Verschlusseinheitwird vorteilhafterweise nach dem Mehrmaterialien-Spritzgussverfahren hergestellt, wobei in einer ersten Giessstufe ein Vorspritzling aus einem ersten Material gegossen wird, dann die Giessform wenigstens teilweise bewegt oder ersetzt wird und dann mit einem zweiten Material die Verschlusseinheit fertig gegossen wird, wobei der Vorspritzling wenigstens teilweise als Giessform dient. Es lassen sich mit diesem Verfahren Dichtflächenpaare aneinander giessen, wobei die eine Dichtfläche aus dem ersten Material besteht, die zweite Dichtfläche aus dem zweiten Material. Die aneinandergegossenen Dichtflächen passen sehr präzise aufeinander und bieten dadurch eine optimale Dichtigkeit.The closure unit according to the invention is advantageously produced by the multi-material injection molding process, in which in a first casting step a pre-molded part is cast from a first material, then the mold is at least partially moved or replaced and then the closure unit is finished with a second material, the pre-molded part at least partially serves as a mold. Pairs of sealing surfaces can be cast onto one another with this method, one sealing surface consisting of the first material and the second sealing surface consisting of the second material. The sealed sealing surfaces fit each other very precisely and therefore offer optimal tightness.

Einige beispielhafte Ausführungsformen der erfindungsgemässen Verschlusseinheit werden anhand der folgenden Figuren detailliert beschrieben. Dabei zeigen:

  • Figur 1 eine beispielhafte Ausführungsform der erfindungsgemässen Verschlusseinheit;
  • Figur 2 innere und äussere Dichtflächenpaare;
  • Figur 3 schematische Darstellungen von erfindungsgemässen Verschlusseinheiten zur Illustration der für die Schwenkbewegung notwendigen Dichtflächenkorrekturen;
  • Figur 4 eine Detailzeichnung der Verschlusseinheit gemäss Figur 1;
  • Figur 5 ein Schema zur Erläuterung derfürdie Schwenkbewegung notwendigen Dichtflächenkorrektur;
  • Figur 6 eine dreidimensionale Darstellung einer äusseren, ausgussteilseitigen Dichtfläche für eine Verschlusseinheit gemäss Figur 1.
Some exemplary embodiments of the closure unit according to the invention are described in detail with reference to the following figures. Show:
  • Figure 1 shows an exemplary embodiment of the closure unit according to the invention;
  • Figure 2 inner and outer pairs of sealing surfaces;
  • FIG. 3 shows schematic representations of closure units according to the invention to illustrate the sealing surface corrections necessary for the pivoting movement;
  • FIG. 4 shows a detailed drawing of the closure unit according to FIG. 1;
  • Figure 5 is a diagram for explaining the sealing surface correction necessary for the pivoting movement;
  • FIG. 6 shows a three-dimensional representation of an outer sealing surface on the pouring part side for a closure unit according to FIG. 1.

Figur 1 zeigt eine beispielhafte Ausführungsform der erfindungsgemässen Verschlusseinheit mit einem Ausgussteil 1 und einem Verschlussteil 2. Der Ausgussteil ist mit einem Gebinde 3 fest verbunden. Der Verschlussteil ist über ein Scharnier 4 begrenzt schwenkbar mit dem Ausgussteil 1 verbunden.FIG. 1 shows an exemplary embodiment of the closure unit according to the invention with a pouring part 1 and a closing part 2. The pouring part is firmly connected to a container 3. The closure part is pivotally connected to the pouring part 1 via a hinge 4.

Figur zeigt mögliche Dichtflächenpaare zur Abdichtung der geschlossenen Verschlusseinheit im Schnitt. Diese befinden sich auf der Stirnseite der Wandung der Ausgussöffnung (A), auf der Aussenoberfläche der Wandung (B) und/oder auf der Innenoberfläche der Wandung der Ausgussöffnung (C), wobei die stirnseitigen Dichtflächenpaare im wesentlichen senkrecht zu einer durch den Ausguss laufenden Achse, die äusseren und inneren im wesentlichen parallel dazu verlaufen. Aus der Figur ist leicht ersichtlich, dass die schematisch dargestellten Verschlussteile einfach senkrecht gegen oben (parallel zur Ausgussachse) von den Ausgussteilen entfernt werden können. Anders ist das bei einer Verschwenkung des Verschlussteiles zum Öffnen der Verschlusseinheit. Stellt man sich die dargestellten Dichtflächenpaare als senkrecht zur Papierebene verlaufend vor, ist es offensichtlich, dass die Verschlussteile 2 ohne Schwierigkeiten um eine ausser- und oberhalb der Ausgussöffnung liegende, parallel zur Papierebene verlaufende Schwenkachse in eine geöffnete Position geschwenkt werden könnten. Liegt aber die Schwenkachse nicht in der Papierebene, sondern beispielsweise senkrecht dazu, ist ebenfalls offensichtlich, dass die Dichtflächen der einzelnen Dichtflächenpaare bei einer Verschwenkung des Verschlussteiles miteinander in Konflikt kommen, das heisst, dass sie einander gegenseitig deformieren, wenn ihre Form nicht entsprechend korrigiert ist. Die einzigen bei einer Schwenkbewegung wie bei einer einfachen Abhebbewegung nicht betroffenen Dichtflächenpaare sind die stirnseitigen Dichtflächenpaare A.Figure shows possible pairs of sealing surfaces for sealing the closed closure unit in section. These are located on the end face of the wall of the pouring opening (A), on the outer surface of the wall (B) and / or on the inside surface of the wall of the pouring opening (C), the end face pairs of sealing faces being essentially perpendicular to an axis running through the pouring spout , the outer and inner run essentially parallel to it. It is easy to see from the figure that the schematically illustrated closure parts can be removed from the pouring parts simply vertically upwards (parallel to the pouring axis). This is different when the closure part is pivoted to open the closure unit. If one imagines the pairs of sealing surfaces shown as running perpendicular to the plane of the paper, it is obvious that the closure parts 2 could be pivoted into an open position without difficulty about an axis of rotation that lies outside and above the pouring opening and runs parallel to the plane of the paper. However, if the pivot axis is not in the plane of the paper, but perpendicular to it, for example, it is also obvious that the sealing surfaces of the individual sealing surface pairs come into conflict with one another when the closure part is pivoted, that is to say that they deform one another if their shape is not corrected accordingly . The only pairs of sealing surfaces that are not affected by a swiveling movement, such as by a simple lifting movement, are the front sealing surface pairs A.

In der Figur 2 sind Schwenkachsen Z senkrecht zur Papierebene eingezeichnet, die Schwenkbewegung des Verschlussteiles mit einem ausgezogenen Pfeil, die entsprechenden Schwenkbewegungen von Randpunkten der Dichtflächen mit gestrichelten Pfeilen angedeutet. Figur 2 ist derart überzeichnet, dass entsprechende Schwenkbewegungen nicht möglich sind, da überall da, wo die schwenkende, verschlussteilseitige Dichtfläche näher an der Schwenkachse liegt als die stationäre, ausgussteilseitige Dichtfläche, die beiden Dichtflächen miteinander in Konflikt kommen, wenn sie geformt sind wie dargestellt.In FIG. 2, swivel axes Z are drawn in perpendicular to the plane of the paper, the swivel movement of the closure part with a solid arrow, and the corresponding swivel movements from edge points of the sealing surfaces are indicated by dashed arrows. Figure 2 is oversubscribed in such a way that corresponding pivoting movements are not possible, since where the pivoting sealing surface on the closure part side is closer to the pivot axis than the stationary sealing surface on the pouring part side, the two sealing surfaces come into conflict when they are shaped as shown.

Damit die entsprechenden Schwenbkbewegungen ohne Deformation der Dichtflächenpaare möglich werden, müssen die Dichtflächenpaare von der Schwenkachse aus gesehen konkav gewölbt sein, das heisst, sie müssen sich um die Schwenkachse krümmen, derart, dass in jeder Schnittfläche senkrecht zur Schwenkachse der von der Schwenkachse am weitesten entfernte Punkt der schwenkenden Dichtfläche sich entlang der stationären Dichtfläche (auf einem Kreisbogen) bewegen kann.In order for the corresponding pivoting movements to be possible without deformation of the pairs of sealing surfaces, the pairs of sealing surfaces must be curved concavely as seen from the pivoting axis, that is, they must curve around the pivoting axis in such a way that in each section perpendicular to the pivoting axis the one furthest away from the pivoting axis Point of the pivoting sealing surface can move along the stationary sealing surface (on a circular arc).

Figur 3 zeigt nun schematisch verschiedene beispielhafte Ausführungsformen von erfindungsgemässen Verschlusseinheiten als Draufsicht auf die Ausgussöffnung. Das Scharnier ist je symbolisch durch die Schwenkachse Z dargestellt. In den dargestellten Varianten sind gemäss obigen Ausführungen je nach Position relativ zur Schwenkachse innere (C) oder äussere (B) Dichtflächen oder gar keine zu korrigieren. In der Figur 3 sind die zu korrigierenden Dichtflächen (B oder C oder/) an den entsprechenden, die Ausgussöffnung begrenzenden Wandabschnitten markiert.FIG. 3 now schematically shows various exemplary embodiments of closure units according to the invention as a top view of the pouring opening. The hinge is symbolically represented by the pivot axis Z. In the variants shown, inner (C) or outer (B) sealing surfaces, or none at all, must be corrected, depending on the position relative to the swivel axis. In FIG. 3, the sealing surfaces (B or C or /) to be corrected are marked on the corresponding wall sections delimiting the pouring opening.

Figur 4 zeigt eine erfindungsgemässe Verschlusseinheit gemäss Figur 1 als Draufsicht und als Schnitt gemäss Ansicht F-F der Draufsicht. Die Verschlusseinheit weist ein äusseres Dichtflächenpaar B und ein stirnseitiges Dichtflächenpaar A auf. Wie aus der Schnittzeichnung ersichtlich, ist das Dichtflächenpaar auf den an das Scharnier (Schwenkachse Z) grenzenden Wandbereichen korrigiert.FIG. 4 shows a closure unit according to the invention according to FIG. 1 as a top view and as a section according to view F-F of the top view. The closure unit has an outer pair of sealing surfaces B and an end pair of sealing surfaces A. As can be seen from the sectional drawing, the pair of sealing surfaces has been corrected on the wall areas adjacent to the hinge (pivot axis Z).

Figur 5 zeigt ein Schema zur genauen Ausgestaltung der Korrektur der Dichtflächen paare an einem einfachen Beispiel. Die Figur besteht aus einer Projektion (unten) in eine Ebene, in der die Schwenkachse liegt, und einer Projektion (oben) in eine Ebene, in der die Ausgussachse (nicht dargestellt) liegt und die im vorliegenden Fall von der Schwenkachse Z senkrecht durchstossen wird. Das Schema zeigt die Fläche, die bei einer Schwenkbewegung von derjenigen Kante der schwenkenden Dichtfläche beschrieben wird, die die stationäre Dichtfläche bei einer Schwenkbewegung ganz überstreift. Im geschlossenen Zustand der Verschlusseinheit hat diese Kante die Position a. Die Punkte P, Q und R auf der Kante a (geschlossene Position) bewegen sich auf den Spuren P', Q' und R' auf Kreisbahnen senkrecht zur Schwenkachse Z, deren Durchmesser p, q und r dem Abstand der Punkte P, Q und R von der Schwenkachse entsprechen.Figure 5 shows a diagram for the precise configuration of the correction of the sealing surface pairs using a simple example. The figure consists of a projection (below) into a plane in which the pivot axis lies and a projection (above) into a plane in which the pouring axis (not shown) lies and which in the present case is penetrated vertically by the pivot axis Z. . The diagram shows the surface that is described for a pivoting movement from that edge of the pivoting sealing surface that completely slides over the stationary sealing surface during a pivoting movement. When the closure unit is closed, this edge has the position a. The points P, Q and R on the edge a (closed position) move on the tracks P ', Q' and R 'on circular orbits perpendicular to the pivot axis Z, whose diameter p, q and r the distance between the points P, Q and R correspond to the swivel axis.

Die von den Spuren P', Q', und P' gebildete Fläche entspricht der korrigierten Form eines äusseren Dichtflächenpaares, entlang einem Wandteil, der gegen die Schwenkachse einen Winkel a bildet und in unkorrigiertem Zustand parallel zur Ausgussachse steht. In entsprechenderweise werden korrigierte Dichtflächenpaare auch für kompliziertere Wandbereiche und Dichtflächenformen konstruiert.The area formed by the tracks P ', Q', and P 'corresponds to the corrected shape of an outer pair of sealing surfaces, along a wall part which forms an angle a with respect to the pivot axis and, in the uncorrected state, is parallel to the pouring axis. Correspondingly, corrected sealing surface pairs are also designed for more complicated wall areas and sealing surface shapes.

Figur 6 zeigt nun in perspektivischer Darstellung eine korrigierte, äussere Dichtfläche F am Ausgussteil einer Verschlussenheit gemäss Figur 1. Da die Dichtfläche F nicht parallel zur Ausgussachse verläuft, sondern eine sich gegen die Ausgussöffnung verjüngende Form hat, ist die Korrektur nur in einem Bereich, der durch die zwei gestrichelt eingezeichneten Linien m und n begrenzt ist, notwendig.FIG. 6 now shows in perspective a corrected, outer sealing surface F on the pouring part of a closure unit according to FIG. 1. Since the sealing surface F does not run parallel to the pouring axis, but has a shape tapering towards the pouring opening, the correction is only in one area that is limited by the two dashed lines m and n necessary.

Claims (3)

1. Verschlusseinheit aus thermoplastischem Kunststoff für ein Gebinde zur Handhabung und Lagerung von fliessfähigem Gut bestehend aus einem im wesentlichen röhrenförmigen Ausgussteil (1) und einem die Öffnung des Ausgussteils verschliessenden Verschlussteil (2), dadurch gekennzeichnet, dass der Verschlussteil (1) um eine Schwenkachse (Z) begrenzt schwenkbar mit dem Ausgussteil (2) verbunden ist, dass der Ausgussteil (1) um die Ausgussöffnung Dichtflächen aufweist, die an den inneren und/oder an den äusseren Oberflächen der Wandung der Ausgussöffnung angebracht sind, dass der Verschlussteil (2) entsprechende Dichtflächen aufweist, die im geschlossenen Zustand der Verschlusseinheit zusammen mit den Dichtflächen des Ausgussteiles dichtende Dichtflächenpaare (B, C) bilden, und dass die Dichtflächenpaare derart ausgebildet sind, dass sie bei einer Schwenkbewegung des Verschlussteiles (2) um die Schwenkachse (Z) nicht deformiert werden.1. Closure unit made of thermoplastic for a container for handling and storage of flowable goods consisting of an essentially tubular pouring part (1) and a closing part (2) closing the opening of the pouring part, characterized in that the closing part (1) about a pivot axis (Z) is pivotally connected to the pouring part (2) so that the pouring part (1) has sealing surfaces around the pouring opening, which are attached to the inner and / or on the outer surfaces of the wall of the pouring opening, that the closing part (2) has corresponding sealing surfaces which form sealing surface pairs (B, C) together with the sealing surfaces of the pouring part in the closed state of the closure unit, and that the sealing surface pairs are designed such that they do not when the closure part (2) pivots about the pivot axis (Z) be deformed. 2. Verschlusseinheit nach Anspruch 1, dadurch gekennzeichnet, dass Dichtflächenpaare in Schnittebenen senkrecht zur Schwenkachse (Z) eine von der Schwenkachse aus gesehen konkave Wölbung mit der Schwenkachse als Zentrum aufweisen.2. Closure unit according to claim 1, characterized in that sealing surface pairs in sectional planes perpendicular to the pivot axis (Z) have a concave curvature as seen from the pivot axis with the pivot axis as the center. 3. Verschlusseinheit nach Anspruch 2, dadurch gekennzeichnet, dass Dichtflächenpaare (B), von denen die schwenkende Dichtfläche näher an der Schwenkachse (Z) liegt als die stationäre Dichtfläche, die genannte Wölbung aufweisen.3. Closure unit according to claim 2, characterized in that pairs of sealing surfaces (B), of which the pivoting sealing surface is closer to the pivot axis (Z) than the stationary sealing surface, have said curvature.
EP92810970A 1991-12-12 1992-12-09 Sealing cap on container for liquid products Expired - Lifetime EP0548016B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3686/91 1991-12-12
CH03686/91A CH688585A5 (en) 1991-12-12 1991-12-12 Closing unit to containers for fliessfaehiges Good.

Publications (2)

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EP0548016A1 true EP0548016A1 (en) 1993-06-23
EP0548016B1 EP0548016B1 (en) 1996-06-12

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Application Number Title Priority Date Filing Date
EP92810970A Expired - Lifetime EP0548016B1 (en) 1991-12-12 1992-12-09 Sealing cap on container for liquid products

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EP (1) EP0548016B1 (en)
JP (1) JP3300046B2 (en)
AT (1) ATE139199T1 (en)
CH (1) CH688585A5 (en)
DE (1) DE59206563D1 (en)
ES (1) ES2090579T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0894732A1 (en) * 1997-07-04 1999-02-03 Tetra Laval Holdings & Finance Sa An opening arrangement for packaging containers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469732A (en) * 1968-04-01 1969-09-30 Clark Mfg Co J L Plastic closure
US3542235A (en) * 1968-10-07 1970-11-24 Walter E Hidding Spice can cover
US4533058A (en) * 1984-11-28 1985-08-06 Owens-Illinois, Inc. One-piece thermoplastic child-resistent dispensing closure
WO1990014287A1 (en) * 1989-05-17 1990-11-29 Rical S.A. Spout assembly and sealing cap with spring-loaded hinge
US5065938A (en) * 1989-09-11 1991-11-19 Champion International Corporation Gable top carton with resealable pour spout

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469732A (en) * 1968-04-01 1969-09-30 Clark Mfg Co J L Plastic closure
US3542235A (en) * 1968-10-07 1970-11-24 Walter E Hidding Spice can cover
US4533058A (en) * 1984-11-28 1985-08-06 Owens-Illinois, Inc. One-piece thermoplastic child-resistent dispensing closure
WO1990014287A1 (en) * 1989-05-17 1990-11-29 Rical S.A. Spout assembly and sealing cap with spring-loaded hinge
US5065938A (en) * 1989-09-11 1991-11-19 Champion International Corporation Gable top carton with resealable pour spout

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0894732A1 (en) * 1997-07-04 1999-02-03 Tetra Laval Holdings & Finance Sa An opening arrangement for packaging containers

Also Published As

Publication number Publication date
DE59206563D1 (en) 1996-07-18
JPH05201438A (en) 1993-08-10
ATE139199T1 (en) 1996-06-15
EP0548016B1 (en) 1996-06-12
JP3300046B2 (en) 2002-07-08
CH688585A5 (en) 1997-11-28
ES2090579T3 (en) 1996-10-16

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