EP0109055B1 - Packaging tube - Google Patents

Packaging tube Download PDF

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Publication number
EP0109055B1
EP0109055B1 EP83111230A EP83111230A EP0109055B1 EP 0109055 B1 EP0109055 B1 EP 0109055B1 EP 83111230 A EP83111230 A EP 83111230A EP 83111230 A EP83111230 A EP 83111230A EP 0109055 B1 EP0109055 B1 EP 0109055B1
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EP
European Patent Office
Prior art keywords
tube
connecting member
packaging tube
film
head
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
EP83111230A
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German (de)
French (fr)
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EP0109055A2 (en
EP0109055A3 (en
Inventor
Engelbert Sander
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Automation Industrielle SA
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Automation Industrielle SA
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Publication date
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Publication of EP0109055A2 publication Critical patent/EP0109055A2/en
Publication of EP0109055A3 publication Critical patent/EP0109055A3/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
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/02—Body construction
    • B65D35/12—Connections between body and closure-receiving bush

Definitions

  • the invention relates to a packaging tube, consisting of a tube tube made of a multilayer composite film with at least one thermoplastic plastic layer and with a metallic barrier layer, a prefabricated plastic and a removal opening and an external thread or an external closure means and a connecting body consisting of a Metal layer and at least one outer thermoplastic plastic layer-containing composite film on which the head piece is placed and welded to it by means of the plastic layer, the circumferential edge of the tube tube overlapping or overlapping the outer edge of the connecting body and their superimposed plastic layers by inductive generation of heat in the metal of the composite film softened and welded together under pressure.
  • Such a tube is known from FIG. 3 and the associated description of DE-OS-26 28 014.
  • the peripheral edge of the tubular body made of a laminate with a metallic barrier layer overlaps the outer edge of a connecting body with a metallic barrier layer.
  • the connecting body has a relatively large cylindrical neck part, on which a tube head made of polyethylene is arranged.
  • the neck part engages in an annular groove in the tube head, through which the tube head is divided inwards into a sleeve and outwards into a collar. Because of the relatively long length of the neck part of the connecting body, the latter is produced in the winding process, the development being punched out of a laminate and the edges then being connected to form a ring by means of an overlap seam.
  • the connecting body produced in this way is then intended to be connected to the head by means of frictional heat before the connection is made to the tube.
  • the object of the invention is to improve a tube of the type mentioned in such a way that, with approximately the same or improved sealing and absorption properties, the individual parts can be manufactured more easily and can be firmly connected to one another in a single operation to form the finished tube.
  • the tube should also be able to be equipped with a membrane in the removal opening.
  • the head piece Due to the cylindrical or frustoconical design of the head piece, its manufacture is simple and requires little plastic material, so that the head piece is easier and cheaper to produce. Characterized in that the entire base surface is connected to the connecting body, there is a relatively large and thus permanent and firm connection of the two parts. This connection is improved in that the connecting body is inserted at an angle into an extension of the removal opening and is also firmly connected to the wall thereof. Furthermore, the plastic material of its layers is inserted into the recess in the extension, so that a kind of clamp - possibly a pin connection - is created, which has grown the strongest loads. The extension ensures a smooth transition between the neck of the connecting body and the wall of the removal opening.
  • the connecting body is advantageous to produce as an annular profile disk and, if a membrane is required, as a profile cover, both of which are preferably formed by deep drawing.
  • the plastic layers are thinned out, the removed material being able to be fed into a larger recess.
  • the conical widening creates an insertion funnel for the removal opening, which ensures good pressure distribution in the head area when the tube contents are pressed out, since the parts that are welded together are pressed against one another.
  • the depression is preferably to be made in the form of a ring groove which is easy to produce and is further preferably to be made in a wider sense approximately perpendicular to the longitudinal axis of the head in order to achieve a clamp effect.
  • the tube has a very large diameter, it may be advantageous to enlarge the contact area of the head on the connecting body, which is indicated by an annular Approach can be easily accomplished.
  • the connecting body can only have two layers, which saves material.
  • the second plastic layer can consist of a relatively permeable or a relatively impermeable material. In the latter case, the absorption capacity in the head area can be reduced further.
  • the invention provides a tube that is much easier and cheaper to manufacture than the tube according to the prior art.
  • a tube with an annular connecting body has approximately the same diffusion resistance as the known tube, a tube with a profile cover, i. H. with a membrane has a higher diffusion resistance than the known tube, since the removal opening is also covered by a metal layer.
  • the layer of the connecting body facing the tube content can be made of an impermeable but also difficult to fuse with other plastics material, whereby the absorbency in the shoulder area and in Tube head lowered when using an annular profile disc and almost completely when using a profile cover - until the membrane is pierced, d. H. during the entire storage period - is excluded.
  • a packaging tube according to the invention contains a tube tube 1 made of a composite film in the form of a three-layer laminate film.
  • a central aluminum layer 2 is connected on both sides with thermoplastic layers 3, 3 'as outer layers, the z. B. may consist of polyethylene or polypropylene.
  • the packaging tube made of a thermoplastic also contains a prefabricated head piece 4 with a central removal opening 5.
  • the head piece 4 is shown as a cylinder.
  • the removal opening 5 is cylindrical, but can also taper.
  • the head piece 4 has an external thread 7 for screwing on a closure cap, not shown.
  • an annular extension 10 can be provided at its lower end.
  • the approach 10 can also be designed as a stop surface for the closure cap.
  • the removal opening has a step-like extension 11.
  • the step can be designed obliquely and undercut (Fig. 1 and 2) or straight (Fig. 3 and 4).
  • the enlargement is cylindrical or preferably conically expanding.
  • an annular groove 12 which preferably adjoins the step, is embodied.
  • the groove 12 preferably has at least one undercut edge.
  • the connecting body 8 is designed as an annular profile disk.
  • the conical main part 13 opens at the tapered end into an upwardly angled neck 14 and at the enlarged end into a downwardly angled outer edge 15.
  • the neck 14 and the extension 11 are designed in dependence on one another so that the neck 14 in the extension 11 such incoming that after the connection a positive transition in the removal opening 5 between the neck 14 and the head piece 4 is secured.
  • the upper cut edge of the neck 14 abuts the undercut step.
  • the outer edge 15 is angled in such a way that the inwardly bent peripheral edge 16 of the tube 1 is gripped under (as shown) or overlapped (not shown).
  • the connecting body 8 according to the embodiment shown in FIGS. 3 and 4 is designed as a profile cover.
  • the profile cover is constructed and designed similar to the ring-shaped profile disk, only the central opening is the Washer, the diameter of which is equal to or approximates that of the removal opening 5, closed.
  • This part of the connecting body covering the opening serves as a membrane 17 which, if the tube is to be emptied, first has to be pierced. For different tube contents, e.g. B. in food, a membrane 17 is prescribed.
  • the stage of expansion can be straight, i.e. H. perpendicular to the longitudinal axis of the head piece 4 and / or the groove 12 can be made enlarged.
  • the connecting bodies 8 are preferably produced by deep drawing as a profile cover; if they are used as a profile disc, only the membrane 17 is cut or punched out, which can be carried out in the same machine without any effort.
  • the connecting body 8 can be made in two layers (not shown) with an upper thermoplastic layer 3 on the aluminum layer 2 or three layers with one thermoplastic layer 3, 3 'on and under the aluminum layer 2.
  • the lower plastic layer 3 'can consist of a relatively impermeable material. This layer then does not need to be easily fused with the plastic material of the tube head 4 or tube tube 1, since it is possible to make both connections through the upper outer plastic layer 3 arranged on the aluminum layer 2.
  • the plastic layer 3 arranged on the aluminum layer 2 of the connecting body 8 should be easy to fuse with the material of the tube head 4 and the material of the inner plastic layer 3 'of the tube tube 1. Due to the possibility of being able to carry out the connection solely by means of the upper plastic layer of the connecting body, this can also be configured in two layers, as indicated above, and specifically when the intended tube content is not changed by direct contact with the then exposed aluminum layer 2.
  • the head piece 4 with its extension 11 is pushed onto the neck 14 of the connecting piece until the base surface 9 of the head piece 4 rests on the main part 13 of the connecting body 8, after which the tubular body 1 with its peripheral edge 16 the outer edge 15 of the Connecting body 8 is supplied under or overlapping. Then z. B. heated by high frequency induction, in particular the aluminum layer 2 in the connecting body 8 and in the edge region of the tube 1, whereby the adjacent plastic layers 3, 3 'are softened and melted.
  • the simultaneous pressurization ensures the firm connection of all tube parts to one another, the softened plastic being distributed such that the groove 12 or other and further depressions as well as the gaps 18, 18 'and a possible gap 19 in the joint area between the head piece 4 and Neck 14 can be filled in the removal opening 5 (see FIGS. 2 and 4).
  • a firm locking of the connecting body 8 on the head piece 4 is achieved in addition to the adhesive connection also achieved by means of plastic softening on the contact surfaces of the head piece 4 with the connecting body 8.
  • By filling the gaps 18, 18 ', 19, a uniform, beautiful surface is achieved.
  • a membrane 17 its softened plastic layer (s) 3, 3 'are pressed from the center to the edge into the then enlarged groove 12, so that the plastic layer (s) on or below the metal layer 2 in the region of the removal opening 5 be significantly thinned out, which on the one hand more material is available for the locking connection and on the other hand also facilitates piercing the membrane 17.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tubes (AREA)

Description

Die Erfindung betrifft eine Verpackungstube, bestehend aus einem Tubenrohr aus einer mehrschichtigen Verbundfolie mit mindestens einer thermoplastischen Kunststoffschicht und mit einer metallischen Sperrschicht, einem vorgefertigten aus Kunststoff bestehenden und eine Entnahmeöffnung und ein Außengewinde oder ein äußeres Verschlußmittel aufweisenden Kopfstück und einem Verbindungskörper, der aus einer eine Metallschicht und mindestens eine äußere thermoplastische Kunststoffschicht enthaltenden Verbundfolie besteht, auf den das Kopfstück auf- gesetzt und mittels der Kunststoffschicht mit ihm verschweißt ist, wobei der Umfangsrand des Tubenrohrs den Außenrand des Verbindungskörpers unter- oder übergreifend überlappt und ihre aufeinanderliegenden Kunststoffschichten durch induktives Erzeugen von Wärme im Metall der Verbundfolie erweicht und unter Druckanwendung miteinander verschweißt sind.The invention relates to a packaging tube, consisting of a tube tube made of a multilayer composite film with at least one thermoplastic plastic layer and with a metallic barrier layer, a prefabricated plastic and a removal opening and an external thread or an external closure means and a connecting body consisting of a Metal layer and at least one outer thermoplastic plastic layer-containing composite film on which the head piece is placed and welded to it by means of the plastic layer, the circumferential edge of the tube tube overlapping or overlapping the outer edge of the connecting body and their superimposed plastic layers by inductive generation of heat in the metal of the composite film softened and welded together under pressure.

Eine derartige Tube ist aus der Fig. 3 und der dazugehörigen Beschreibung der DE-OS-26 28 014 bekannt. Bei dieser Tube übergreift der Umfangsrand des Rohrkörpers aus einem Laminat mit metallischer Sperrschicht den Außenrand eines Verbindungskörpers mit metallischer Sperrschicht. Der Verbindungskörper weist einen reiativ großen zylindrischen Halsteil auf, auf dem ein aus Polyäthylen bestehender Tubenkopf angeordnet ist. Der Halsteil greift dabei in eine Ringnut im Tubenkopf ein, durch die der Tubenkopf nach innen in eine Hülse und nach außen in einen Kragen aufgegliedert ist. Wegen der relativ großen Länge des Halsteils des Verbindungskörpers wird dieser im Wickelverfahren hergestellt, wobei die Abwicklung aus einem Laminat ausgestanzt und hierauf durch eine Überlappungsnaht die Ränder zu einem Ring verbunden werden. Der so hergestellte Verbindungskörper soll dann bevor die Verbindung mit dem Tubenrohr hergestellt wird, durch Reibungshitze mit dem Kopf verbunden werden.Such a tube is known from FIG. 3 and the associated description of DE-OS-26 28 014. In this tube, the peripheral edge of the tubular body made of a laminate with a metallic barrier layer overlaps the outer edge of a connecting body with a metallic barrier layer. The connecting body has a relatively large cylindrical neck part, on which a tube head made of polyethylene is arranged. The neck part engages in an annular groove in the tube head, through which the tube head is divided inwards into a sleeve and outwards into a collar. Because of the relatively long length of the neck part of the connecting body, the latter is produced in the winding process, the development being punched out of a laminate and the edges then being connected to form a ring by means of an overlap seam. The connecting body produced in this way is then intended to be connected to the head by means of frictional heat before the connection is made to the tube.

Eine derartige Tube kann die an moderne Tuben zu stellende Anforderung in Bezug auf Diffusionsfestigkeit ziemlich gut erfüllen, da die sperrende Metallschicht des Verbindungskörpers die Metallsperrschicht des Tubenrohrs untergreift und weit in den Hals des Kopfstücks in die Nähe der Ausgangsöffnung der Tube geführt ist. Auch die mit dem Tubeninhalt in Berührung kommenden Kunststoffschichtflächen sind relativ gering, so daß auch das Absorptionsverhalten zufriedenstellend ist. Die Herstellungstechnologie dieser Tube ist jedoch, wie oben dargelegt wurde, umständlich und die Zusammenfügung der Einzelteile erfolgt in mehreren aufeinanderfolgenden Schritten. Durch das Wickeln des Verbindungskörpers entstehen Überlappungsnähte, die einerseits das schöne Aussehen beeinträchtigen und andererseits wegen ihrer im Vergleich zum einschichtigen Material größeren Stärke das Einführen in die Ringnut des Kopfstücks komplizieren und nicht zuletzt Probleme beim Reibungsverschweißen bewirken. Bei dieser Tube besteht auch keine Möglichkeit ohne zusätzlichen größeren Aufwand in der Entnahmeöffnung eine Membran vorzusehen.Such a tube can meet the requirements placed on modern tubes with respect to diffusion resistance quite well, since the blocking metal layer of the connecting body engages under the metal barrier layer of the tube and is guided far into the neck of the head piece in the vicinity of the outlet opening of the tube. Also, the next with the contents of the tube into contact Kunststoffsc layer surfaces h are relatively small, so that the absorption behavior is satisfactory. However, as explained above, the production technology of this tube is cumbersome and the assembly of the individual parts takes place in several successive steps. The winding of the connecting body creates overlap seams which, on the one hand, impair the beautiful appearance and, on the other hand, complicate the insertion into the annular groove of the head piece because of their greater strength compared to the single-layer material, and not least cause problems with friction welding. With this tube there is also no possibility of providing a membrane in the removal opening without any additional major effort.

Aufgabe der Erfindung ist es, eine Tube der eingangs genannten Art dahingehend zu verbessern, daß bei etwa gleichen oder verbesserten Dicht- und Absorptionseigenschaften die Einzelteile einfacher herstellbar und in einem einzigen Arbeitsgang fest miteinander zur fertigen Tube verbindbar sind.The object of the invention is to improve a tube of the type mentioned in such a way that, with approximately the same or improved sealing and absorption properties, the individual parts can be manufactured more easily and can be firmly connected to one another in a single operation to form the finished tube.

Gleichzeitig soll die Tube auch mit einer Membran in der Entnahmeöffnung ausstattbar sein.At the same time, the tube should also be able to be equipped with a membrane in the removal opening.

Diese Aufgabe wird durch eine Tube mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a tube with the features of claim 1.

Durch die zylindrische oder stumpfkegelförmige Ausbildung des Kopfstücks ist dessen Herstellung einfach und erfordert wenig Kunststoffmaterial, so daß das Kopfstück leichter und billiger herstellbar ist. Dadurch, daß die gesamte Basisfläche mit dem Verbindungskörper verbunden ist, besteht eine relativ großflächige und damit dauerhafte und feste Verbindung beider Teile. Diese Verbindung wird dadurch verbessert, daß der Verbindungskörper unter einem Winkel in eine Erweiterung der Entnahmeöffnung eingeführt und auch fest mit deren Wandung verbunden wird. Ferner wird das Kunststoffmaterial seiner Schichten in die Vertiefung in der Erweiterung eingeführt, so daß eine Art Klammer - gegebenenfalls Stift-Verbindung - entsteht, die stärksten Belastungen gewachsen ist. Durch die Erweiterung ist ein glatter Übergang zwischen dem Hals des Verbindungskörpers und der Wand der Entnahmeöffnung gewährleistet.Due to the cylindrical or frustoconical design of the head piece, its manufacture is simple and requires little plastic material, so that the head piece is easier and cheaper to produce. Characterized in that the entire base surface is connected to the connecting body, there is a relatively large and thus permanent and firm connection of the two parts. This connection is improved in that the connecting body is inserted at an angle into an extension of the removal opening and is also firmly connected to the wall thereof. Furthermore, the plastic material of its layers is inserted into the recess in the extension, so that a kind of clamp - possibly a pin connection - is created, which has grown the strongest loads. The extension ensures a smooth transition between the neck of the connecting body and the wall of the removal opening.

Wenn eine Tube ohne Membran in der Entnahmeöffnung benötigt wird, ist es vorteilhaft, den Verbindungskörper als ringförmige Profilscheibe und wenn eine Membran benötigt wird, als Profildeckel herzustellen, wobei beide vorzugsweise durch Tiefziehen geformt werden.If a tube without a membrane is required in the removal opening, it is advantageous to produce the connecting body as an annular profile disk and, if a membrane is required, as a profile cover, both of which are preferably formed by deep drawing.

Um ein leichteres Durchstechen der Membran zu gewährleisten, sind deren Kunststoffschichten ausgedünnt, wobei das entfernte Material einer größer ausgestalteten Vertiefung zugeführt werden kann.In order to ensure easier piercing of the membrane, the plastic layers are thinned out, the removed material being able to be fed into a larger recess.

Durch die konische Erweiterung wird ein Einführungstrichter für die Entnahmeöffnung gebildet, der eine gute Druckverteilung im Kopfbereich beim Auspressen des Tubeninhalts gewährleistet, da die miteinander verschweißten Teile gegeneinander gedrückt werden.The conical widening creates an insertion funnel for the removal opening, which ensures good pressure distribution in the head area when the tube contents are pressed out, since the parts that are welded together are pressed against one another.

Die Vertiefung ist vorzugsweise in Form einer einfach herzustellenden Ringnut auszuführen und ist weiter vorzugsweise in einem weiteren Sinne etwa senkrecht zur Längsachse des Kopfes auszuführen, um einen Klammereffekt zu erzielen.The depression is preferably to be made in the form of a ring groove which is easy to produce and is further preferably to be made in a wider sense approximately perpendicular to the longitudinal axis of the head in order to achieve a clamp effect.

Falls die Tube einem sehr großen Durchmesser aufweist, kann es vorteilhaft sein, die Auflagefläche des Kopfes auf dem Verbindungskörper zu vergrößern, was durch einen ringförmigen Ansatz leicht bewerkstelligt werden kann.If the tube has a very large diameter, it may be advantageous to enlarge the contact area of the head on the connecting body, which is indicated by an annular Approach can be easily accomplished.

Falls der Tubeninhalt nicht mit der metallischen Sperrschicht (Aluminium) reagiert, kann der Verbindungskörper nur zweischichtig ausgebildet sein, was eine Materialersparnis bedeutet.If the tube content does not react with the metallic barrier layer (aluminum), the connecting body can only have two layers, which saves material.

Falls ein dreischichtiger Verbindungskörper benötigt wird, kann die zweite Kunststoffschicht aus einem relativ durchlässigen oder einem relativ undurchlässigen Material bestehen. Im letzteren Fall kann das Absorptionsvermögen im Kopfbereich weiter gesenkt werden.If a three-layer connecting body is required, the second plastic layer can consist of a relatively permeable or a relatively impermeable material. In the latter case, the absorption capacity in the head area can be reduced further.

Es ist vorteilhaft, alle Einzelteile der Tube in einem Arbeitsgang miteinander fest zu verbinden.It is advantageous to firmly connect all of the individual parts of the tube together in one operation.

Durch die Erfindung wird eine Tube angegeben, die wesentlich einfacher und billiger herstellbar ist, als die Tube nach dem Stand der Technik. Eine Tube mit einem ringförmigen Verbindungskörper hat eine etwa gleiche Diffusionsfestigkeit wie die bekannte Tube, eine Tube mit einem Profildeckel, d. h. mit einer Membran hat eine höhere Diffusionsfestigkeit als die bekannte Tube, da auch die Entnahmeöffnung durch eine Metallschicht überdeckt ist. Dadurch, daß sowohl das Kopfstück als auch das Tubenrohr über die Kunststoffschicht auf dem Verbindungskörper verbunden werden kann, kann die den Tubeninhalt zugewandte Schicht des Verbindungskörpers aus einem undurchlässigen, aber auch schwer mit anderen Kunststoffen verschmelzbaren Material hergestellt sein, wodurch die Absorptionsfähigkeit im Schulterbereich und im Tubenkopf bei Verwendung einer ringförmigen Profilscheibe herabgesetzt und bei Verwendung eines Profildeckels nahezu vollständig - bis zum Durchstechen der Membran, d. h. während der gesamten Lagerzeit - ausgeschlossen wird.The invention provides a tube that is much easier and cheaper to manufacture than the tube according to the prior art. A tube with an annular connecting body has approximately the same diffusion resistance as the known tube, a tube with a profile cover, i. H. with a membrane has a higher diffusion resistance than the known tube, since the removal opening is also covered by a metal layer. The fact that both the head piece and the tube can be connected via the plastic layer on the connecting body, the layer of the connecting body facing the tube content can be made of an impermeable but also difficult to fuse with other plastics material, whereby the absorbency in the shoulder area and in Tube head lowered when using an annular profile disc and almost completely when using a profile cover - until the membrane is pierced, d. H. during the entire storage period - is excluded.

Nachstehend wird die Erfindung anhand von Ausführungsbeispielen unter Bezug auf schematische, nicht maßstäbliche Zeichnungen näher erläutert. Es zeigt :

  • Figur 1 einen Ausschnitt des Kopfbereichs einer Verpackungstube mit einem Verbindungskörper in Form einer ringförmigen Profilscheibe in der Anordnung der Einzelteile vor deren unlösbarer Verbindung,
  • Figur 2 den Ausschnitt gemäß Fig. 1 nach dem Verschweißen der Einzelteile in einer Schnittdarstellung (rechte Hälfte) und in Draufsicht (linke Hälfte),
  • Figur 3 den gleichen Ausschnitt einer Verpackungstube wie er in Fig. 1 dargestellt ist, wobei der Verbindungskörper als Profildeckel ausgeführt ist,
  • Figur 4 den Ausschnitt gemäß Fig. 3 nach dem Verschweißen der Einzelteile in einer Schnittdarstellung (rechte Hälfte) und in Draufsicht (linke Hälfte).
The invention is explained in more detail below on the basis of exemplary embodiments with reference to schematic drawings, which are not to scale. It shows :
  • FIG. 1 shows a detail of the head region of a packaging tube with a connecting body in the form of an annular profile disk in the arrangement of the individual parts before their permanent connection,
  • 2 shows the detail according to FIG. 1 after the welding of the individual parts in a sectional view (right half) and in a top view (left half),
  • FIG. 3 shows the same section of a packaging tube as is shown in FIG. 1, the connecting body being designed as a profile cover,
  • 4 shows the detail according to FIG. 3 after the welding of the individual parts in a sectional view (right half) and in a top view (left half).

Eine erfindungsgemäße Verpackungstube enthält ein Tubenrohr 1 aus einer Verbundfolie in Form einer dreischichtigen Laminatfolie. Eine zentrale Aluminiumschicht 2 ist beidseitig mit thermoplastischen Kunststoffschichten 3, 3' als Außenschichten verbunden, die z. B. aus Polyäthylen oder Polypropylen bestehen können. Beide Kunststoffschichten 3, 3' sind aus einem Material oder jeweils aus verschiedenem Material und mit verschiedener Stärke gegebenenfalls auch unter Verwendung von Zwischenschichten in Abhängigkeit von dem vorgesehenen Tubeninhalt, der Tubengrößen oder anderer Parameter ausgeführt.A packaging tube according to the invention contains a tube tube 1 made of a composite film in the form of a three-layer laminate film. A central aluminum layer 2 is connected on both sides with thermoplastic layers 3, 3 'as outer layers, the z. B. may consist of polyethylene or polypropylene. Both plastic layers 3, 3 'are made of one material or each of a different material and with different thicknesses, if necessary also using intermediate layers depending on the intended tube content, the tube sizes or other parameters.

Die Verpackungstube aus einem thermoplastischen Kunststoff (z. B. Polyäthylen) enthält ferner ein vorgefertigtes Kopfstück 4 mit einer zentralen Entnahmeöffnung 5. In den Ausführungsbeispielen ist das Kopfstück 4 als Zylinder dargestellt. Es ist aber auch möglich, den Tubenkopf 4 anders, nämlich mit einem Trapez- oder Pyramidenstumpfquerschnitt herzustellen, wobei auch nur eine Seitenkante zur Längsachse 6 des Kopfstücks 4 geneigt sein kann. Die Entnahmeöffnung 5 ist zylindrisch, kann sich aber auch verjüngen.The packaging tube made of a thermoplastic (eg polyethylene) also contains a prefabricated head piece 4 with a central removal opening 5. In the exemplary embodiments, the head piece 4 is shown as a cylinder. However, it is also possible to produce the tube head 4 differently, namely with a trapezoidal or truncated pyramid cross-section, it also being possible for only one side edge to be inclined to the longitudinal axis 6 of the head piece 4. The removal opening 5 is cylindrical, but can also taper.

Das Kopfstück 4 weist ein Außengewinde 7 zum Aufschrauben einer nicht dargestellten Verschlußkappe auf. Zur Vergrößerung der mit einem Verbindungskörper 8 in Kontakt stehenden Basisfläche 9 des Kopfstücks 4 kann an seinem unteren Ende ein ringförmiger Ansatz 10 vorgesehen werden. Der Ansatz 10 kann auch als Anschlagfläche für die Verschlußkappe ausgestaltet sein. Am unteren Ende des Kopfstücks 4 weist die Entnahmeöffnung eine stufenförmige Erweiterung 11 auf. Die Stufe kann schräg und hinterschnitten (Fig. 1 und 2) oder gerade (Fig. 3 und 4) gestaltet sein. Nach der Stufe ist die Erweiterung zylindrisch oder vorzugsweise sich konisch erweiternd fortgesetzt. Im zylindrischen bzw. konischen Teil der Erweiterung 11 ist eine vorzugsweise sich direkt an die Stufe anschließende ringförmige Nut 12 ausgeführt. Die Nut 12 weist vorzugsweise wenigstens eine hinterschnittene Kante auf.The head piece 4 has an external thread 7 for screwing on a closure cap, not shown. To enlarge the base surface 9 of the head piece 4, which is in contact with a connecting body 8, an annular extension 10 can be provided at its lower end. The approach 10 can also be designed as a stop surface for the closure cap. At the lower end of the head piece 4, the removal opening has a step-like extension 11. The step can be designed obliquely and undercut (Fig. 1 and 2) or straight (Fig. 3 and 4). After the step, the enlargement is cylindrical or preferably conically expanding. In the cylindrical or conical part of the enlargement 11, an annular groove 12, which preferably adjoins the step, is embodied. The groove 12 preferably has at least one undercut edge.

Es können auch mehrere ringförmige Nuten oder anders gestaltete Vertiefungen, z. B. Kreuze oder Blindbohrungen, vorgesehen sein. Diese können auch in der Basisfläche 9 ausgeführt sein (alles nicht dargestellt).It can also have several annular grooves or other recesses, z. B. crosses or blind holes may be provided. These can also be implemented in the base surface 9 (all not shown).

Der Verbindungskörper 8 gemäß dem in Fig. 1 und 2 dargestellten Ausführungsbeispiel ist als ringförmige Profilscheibe ausgeführt. Der konische Hauptteil 13 mündet am verjüngten Ende in einen nach oben abgewinkelten Hals 14 und am erweiterten Ende in einen nach unten abgewinkelten Außenrand 15. Der Hals 14 und die Erweiterung 11 sind in Abhängigkeit voneinander so gestaltet, daß der Hals 14 in die Erweiterung 11 derart eingeht, daß nach der Verbindung ein formschlüssiger Übergang in der Entnahmeöffnung 5 zwischen Hals 14 und Kopfstück 4 gesichert ist. Die obere Schnittkante des Halses 14 stößt stumpf gegen die hinterschnittene Stufe. Der Außenrand 15 ist so abgewinkelt, daß der nach innen gebogene Umfangsrand 16 des Tubenrohrs 1 untergriffen (wie dargestellt) oder überlappt wird (nicht dargestellt).The connecting body 8 according to the embodiment shown in FIGS. 1 and 2 is designed as an annular profile disk. The conical main part 13 opens at the tapered end into an upwardly angled neck 14 and at the enlarged end into a downwardly angled outer edge 15. The neck 14 and the extension 11 are designed in dependence on one another so that the neck 14 in the extension 11 such incoming that after the connection a positive transition in the removal opening 5 between the neck 14 and the head piece 4 is secured. The upper cut edge of the neck 14 abuts the undercut step. The outer edge 15 is angled in such a way that the inwardly bent peripheral edge 16 of the tube 1 is gripped under (as shown) or overlapped (not shown).

Der Verbindungskörper 8 gemäß dem in Fig. 3 und 4 dargestellten Ausführungsbeispiel ist als Profildeckel ausgeführt. Der Profildeckel ist ähnlich wie die ringförmige Profilscheibe aufgebaut und gestaltet, nur ist die zentrale Öffnung der Ringscheibe, deren Durchmesser dem der Entnahmeöffnung 5 gleicht oder angenähert ist, verschlossen. Dieser die Öffnung überdeckende Teil des Verbindungskörpers dient als Membran 17, die, wenn die Tube entleert werden soll, erst durchstochen werden muß. Für verschiedene Tubeninhalte, z. B. bei Nahrungsmitteln, ist eine Membran 17 vorgeschrieben.The connecting body 8 according to the embodiment shown in FIGS. 3 and 4 is designed as a profile cover. The profile cover is constructed and designed similar to the ring-shaped profile disk, only the central opening is the Washer, the diameter of which is equal to or approximates that of the removal opening 5, closed. This part of the connecting body covering the opening serves as a membrane 17 which, if the tube is to be emptied, first has to be pierced. For different tube contents, e.g. B. in food, a membrane 17 is prescribed.

Wenn ein Profildeckel vorgesehen ist, kann die Stufe der Erweiterung gerade, d. h. senkrecht zur Längsachse des Kopfstücks 4 ausgeführt sein und/oder die Nut 12 kann vergrößert ausgeführt sein.If a profile cover is provided, the stage of expansion can be straight, i.e. H. perpendicular to the longitudinal axis of the head piece 4 and / or the groove 12 can be made enlarged.

Die Verbindungskörper 8 werden vorzugsweise durch Tiefziehen als Profildeckel hergestellt ; werden sie als Profilscheibe verwendet, wird lediglich die Membran 17 gekappt bzw. ausgestanzt, was ohne Aufwand in der gleichen Maschine durchgeführt werden kann.The connecting bodies 8 are preferably produced by deep drawing as a profile cover; if they are used as a profile disc, only the membrane 17 is cut or punched out, which can be carried out in the same machine without any effort.

Der Verbindungskörper 8 kann zweischichtig (nicht dargestellt) mit einer oberen thermoplastischen Kunststoffschicht 3 auf der Aluminiumschicht 2 oder dreischichtig mit je einer thermoplastischen Kunststoffschicht 3, 3' auf und unter der Aluminiumschicht 2 ausgeführt sein.The connecting body 8 can be made in two layers (not shown) with an upper thermoplastic layer 3 on the aluminum layer 2 or three layers with one thermoplastic layer 3, 3 'on and under the aluminum layer 2.

Im letzteren Fall kann die untere Kunststoffschicht 3' aus einem relativ undurchlässigen Material bestehen. Diese Schicht braucht sich dann auch nicht leicht mit dem Kunststoffmaterial des Tubenkopfes 4 bzw. des Tubenrohrs 1 verschmelzen zu lassen, da die Möglichkeit besteht, beide Verbindungen durch die auf der Aluminiumschicht 2 angeordnete obere = äußere Kunststoffschicht 3 vorzunehmen. Die auf der Aluminiumschicht 2 des Verbindungskörpers 8 angeordnete Kunststoffschicht 3 soll sich leicht mit dem Material des Tubenkopfes 4 und dem Material der inneren Kunststoffschicht 3' des Tubenrohrs 1 verschmelzen lassen. Durch die Möglichkeit, die Verbindung allein mittels der oberen Kunststoffschicht des Verbindungskörpers durchführen zu können, kann dieser auch wie oben angegeben zweischichtig ausgestaltet werden und zwar dann, wenn der vorgesehene Tubeninhalt durch den direkten Kontakt mit der dann freiliegenden Aluminiumschicht 2 nicht verändert wird.In the latter case, the lower plastic layer 3 'can consist of a relatively impermeable material. This layer then does not need to be easily fused with the plastic material of the tube head 4 or tube tube 1, since it is possible to make both connections through the upper = outer plastic layer 3 arranged on the aluminum layer 2. The plastic layer 3 arranged on the aluminum layer 2 of the connecting body 8 should be easy to fuse with the material of the tube head 4 and the material of the inner plastic layer 3 'of the tube tube 1. Due to the possibility of being able to carry out the connection solely by means of the upper plastic layer of the connecting body, this can also be configured in two layers, as indicated above, and specifically when the intended tube content is not changed by direct contact with the then exposed aluminum layer 2.

Zur Herstellung einer Tube wird das Kopfstück 4 mit seiner Erweiterung 11 auf den Hals 14 des Verbindungsstücks so weit aufgeschoben, bis die Basisfläche 9 des Kopfstücks 4 auf dem Hauptteil 13 des Verbindungskörpers 8 aufliegt, wonach der Rohrkörper 1 mit seinem Umfangsrand 16 den Außenrand 15 des Verbindungskörpers 8 untergreifend oder überlappend zugeführt wird. Sodann wird z. B. durch Hochfrequenzinduktion insbesondere die Aluminiumschicht 2 im Verbindungskörper 8 und im Randbereich des Tubenrohrs 1 erhitzt, wodurch die anliegenden Kunststoffschichten 3, 3' erweicht und angeschmolzen werden. Durch die gleichzeitige Druckbeaufschlagung wird die feste Verbindung aller Tubenteile miteinander gewährleistet, wobei der erweichte Kunststoff derart verteilt wird, daß die Nut 12 bzw. andere und weitere Vertiefungen als auch die Spalte 18, 18' und ein eventueller Spalt 19 im Stoßbereich zwischen Kopfstück 4 und Hals 14 in der Entnahmeöffnung 5 ausgefüllt werden (s. Fig. 2 und 4). Durch die Ausfüllung der Nut 12 bzw. eventueller weiterer Vertiefungen wird eine feste Verriegelung des Verbindungskörpers 8 am Kopfstück 4 zusätzlich zur ebenfalls vermittels der Kunststofferweichung erzielten Klebeverbindung an den Berührungsflächen des Kopfstücks 4 mit dem Verbindungskörper 8 erreicht. Durch die Ausfüllung der Spalte 18, 18', 19 wird eine gleichmäßige schöne Oberfläche erzielt.To produce a tube, the head piece 4 with its extension 11 is pushed onto the neck 14 of the connecting piece until the base surface 9 of the head piece 4 rests on the main part 13 of the connecting body 8, after which the tubular body 1 with its peripheral edge 16 the outer edge 15 of the Connecting body 8 is supplied under or overlapping. Then z. B. heated by high frequency induction, in particular the aluminum layer 2 in the connecting body 8 and in the edge region of the tube 1, whereby the adjacent plastic layers 3, 3 'are softened and melted. The simultaneous pressurization ensures the firm connection of all tube parts to one another, the softened plastic being distributed such that the groove 12 or other and further depressions as well as the gaps 18, 18 'and a possible gap 19 in the joint area between the head piece 4 and Neck 14 can be filled in the removal opening 5 (see FIGS. 2 and 4). By filling the groove 12 or any further depressions, a firm locking of the connecting body 8 on the head piece 4 is achieved in addition to the adhesive connection also achieved by means of plastic softening on the contact surfaces of the head piece 4 with the connecting body 8. By filling the gaps 18, 18 ', 19, a uniform, beautiful surface is achieved.

Sofern eine Membran 17 vorgesehen ist, werden deren erweichte Kunststoffschicht(en) 3, 3' von der Mitte zum Rand in die dann vergrößerte Nut 12 ausgepreßt, so daß die Kunststoffschicht(en) auf bzw. unter der Metallschicht 2 im Bereich der Entnahmeöffnung 5 wesentlich ausgedünnt werden, wodurch einerseits mehr Material für die Verriegelungsverbindung zur Verfügung steht und andererseits auch das Durchstechen der Membran 17 erleichtert wird.If a membrane 17 is provided, its softened plastic layer (s) 3, 3 'are pressed from the center to the edge into the then enlarged groove 12, so that the plastic layer (s) on or below the metal layer 2 in the region of the removal opening 5 be significantly thinned out, which on the one hand more material is available for the locking connection and on the other hand also facilitates piercing the membrane 17.

Claims (10)

1. Packaging tube, comprising a tube (1) of a multi-layer laminated film with at least one thermoplastic film and a metallic barrier film (2), a prefabricated plastics head member (4), having a discharge opening (5) and external screw threading (7) and a connecting member (8), comprising a laminated film consisting of a metal film (2) and at least one outer thermoplastic plastics film (3, 3') on which the head member (4) is placed and welded thereto by means of the plastics film (3), the circumferential edge (16) of the tube (1) overlapping the external edge (15) of the connecting member (8) by extending under or over the same and the superjacent plastics films (3, 3') being softened by the inductive generation of heat in the metal of the laminated film and being welded to each other by the application of pressure, characterised in that the head member (4) is constructed cylindrically or in frustoconical form and its base surface (9) is completely joined to the connecting member (8), that the discharge opening (5) is provided at the bottom end with an expansion (11) with at least one indentation (12), that the connecting member (8) is provided with a neck (14) adapted to the shape of the expansion (11) and that plastics material of the connecting member (8) is introduced into the indentation.
2. Packaging tube to claim 1, characterised in that the connecting member (8) is an annular profiled disc.
3. Packaging tube to claim 1, characterised in that the connecting member (8) is a profiled cover with a membrane (17) integrated therewith.
4. Packaging tube according to claim 2 or 3, characterised in that the connecting member (8) is produced by deep-drawing.
5. Packaging tube to claim 3 or claims 3 and 4, characterised in that the plastic film or films associated with the membrane (17) of the profiled cover are thinned.
6. Packaging tube according to any of the claims 1 to 5, characterised in that the expansion (11) is constructed so as to be conically flared towards the tube.
7. Packaging tube according to any of the claims 1 to 6, characterised in that the indentation comprises at least one annular groove (12) extending approximately perpendicularly to the longitudinal head axis (6).
8. Packaging tube according to any of the claims 1 to 7, characterised in that the bottom end of the tube head (4) is provided with an annular extension (10), which is outwardly orientated.
9. Packaging tube according to claim 8, characterised in that the connecting member (8) is additionally provided with a bottom plastics film of a readily weldable or of a relatively impermeable plastics material.
10. Packaging tube according to any of the claims 1 to 9, characterised in that the head member (4), the connecting member (8) and the tube (1) are simultaneously welded to each other in one operation.
EP83111230A 1982-11-12 1983-11-10 Packaging tube Expired EP0109055B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8231867U DE8231867U1 (en) 1982-11-12 1982-11-12 Packing room
DE8231867U 1982-11-12

Publications (3)

Publication Number Publication Date
EP0109055A2 EP0109055A2 (en) 1984-05-23
EP0109055A3 EP0109055A3 (en) 1985-05-15
EP0109055B1 true EP0109055B1 (en) 1987-03-04

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ID=6745526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83111230A Expired EP0109055B1 (en) 1982-11-12 1983-11-10 Packaging tube

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EP (1) EP0109055B1 (en)
DE (2) DE8231867U1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE502674C2 (en) * 1994-04-13 1995-12-04 Abba Seafood Ab Canned packaging tube
DE102004043040B4 (en) * 2004-09-06 2012-05-10 Kunststoffwerk Kutterer Gmbh & Co. Kg Closure device for tubes and tube
EP1657174A1 (en) * 2004-11-15 2006-05-17 Sika Technology AG Tube-type container
FR3012349B1 (en) * 2013-10-29 2020-07-31 Albea Services TUBE HEAD INCLUDING AN INSERT FORMING A BARRIER

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260411A (en) * 1964-07-13 1966-07-12 American Can Co Collapsible container structure
JPS583902B2 (en) * 1975-06-27 1983-01-24 カ−ル・メ−ゲルレ packaging tube
CH652966A5 (en) * 1981-05-07 1985-12-13 Maegerle Karl Lizenz METHOD FOR PRODUCING A PACKAGING CONTAINER AND TUBE-CONTAINER CONTAINED THEREFORE.

Also Published As

Publication number Publication date
DE3369951D1 (en) 1987-04-09
EP0109055A2 (en) 1984-05-23
EP0109055A3 (en) 1985-05-15
DE8231867U1 (en) 1983-03-17

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