EP0111131B1 - Tubular container - Google Patents

Tubular container Download PDF

Info

Publication number
EP0111131B1
EP0111131B1 EP83110690A EP83110690A EP0111131B1 EP 0111131 B1 EP0111131 B1 EP 0111131B1 EP 83110690 A EP83110690 A EP 83110690A EP 83110690 A EP83110690 A EP 83110690A EP 0111131 B1 EP0111131 B1 EP 0111131B1
Authority
EP
European Patent Office
Prior art keywords
headpiece
tubular body
tube
connecting element
outer rim
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
EP83110690A
Other languages
German (de)
French (fr)
Other versions
EP0111131A1 (en
Inventor
Engelbert Sander
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.)
Automation Industrielle SA
Original Assignee
Automation Industrielle SA
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 Automation Industrielle SA filed Critical Automation Industrielle SA
Publication of EP0111131A1 publication Critical patent/EP0111131A1/en
Application granted granted Critical
Publication of EP0111131B1 publication Critical patent/EP0111131B1/en
Expired legal-status Critical Current

Links

Images

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
    • 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, a multilayer composite film with a metallic barrier layer, a prefabricated plastic conical head piece with a removal opening and a connecting body arranged thereon, which consists of a composite film containing a metal layer and at least one plastic layer, whereby the circumferential edge of the tube overlaps the outer edge of the connecting body under or overlapping and their superimposed plastic layers are softened by inductive generation of heat in the metal of the composite films and are welded together under pressure.
  • Such a packaging tube is known from FIGS. 4.5 and the associated description of DE-A No. 2628014.
  • the prefabricated head piece is made of polyethylene and is welded to the tube by means of the connecting body by inductive heating of the metal layer by high frequency, which softens the adjacent plastic layers.
  • the peripheral edge of the tube tube extends over the connecting body.
  • the peripheral edge of the tube tube engages under the connecting body.
  • the plastic layers of the connecting body and the tubular body are made of a material that can be: welded well with the tube head made of polyethylene.
  • the connecting body has a barrier layer
  • the tube shoulder of this tube part is protected against diffusion, in particular from the outside, but the polyethylene tube head arranged between the barrier layer and the filling material absorbs considerable amounts of volatile constituents, e.g. Flavorings, which causes a disadvantageous change in the quality of the filling.
  • the connecting body with the barrier layer forms the entire conical part of the head piece and its barrier layer forms part of the removal opening.
  • a threaded head sleeve is then placed only on this part.
  • B. by the multiple deformation of the aluminum barrier layer in different directions and the connection with the threaded head sleeve much more complicated.
  • the stiffness of the head suffers if no additional measures which complicate the manufacture and become more expensive are taken.
  • the tube described there has a tubular body made of a layer material with an impermeable aluminum foil.
  • the tubular body is pushed onto a mandrel on which a separating insert made of a largely gas-impermeable plastic material is placed.
  • the separating insert has an edge surface against which the upper edge of the tube is molded.
  • a head piece made of a relatively gas-permeable, easily deformable thermoplastic material (polyethylene) is then cast in an injection mold.
  • the separating insert has annular beads which protrude into the head piece.
  • the dividing insert is made of a material that does not fuse with the material of the head piece under normal conditions; leaves what is the case with the known impermeable plastics suitable for locking elements, the connection depends entirely on the bead-groove connection.
  • a variant of this solution provides that the separating insert is also led into the neck and surrounds the dispensing channel. By pouring the relatively thick head pieces onto the tube, the manufacturing technology is also complicated and expensive.
  • the object of the invention is to provide a packaging tube of the type mentioned at the outset, which surrounds a tube hold in the head region almost completely gas-tight, possibly reducing the consumption of impermeable plastic which is difficult to melt with the plastics of the foils, and the individual parts thereof in one operation in a simple manner are firmly connected
  • the upper part can be completely covered by the lower gas-impermeable part, so that gas-tightness is guaranteed. Since the upper part can easily be fused with the plastic layers of the composite film, a firm connection of these parts is also achieved. Due to the undercut, e.g. in the form of a partially keg-shaped design of the outer edge, a firm locking between the upper and lower head part is ensured by the introduction and molding of plastic material onto this edge.
  • the head piece can be used for different tube diameters without change. In the case of different diameters, only the connecting body has to be changed, so that the consumption of expensive impermeable plastic material remains the same despite the enlargement of the tube diameter.
  • two advantageous variants of the connection of the head parts of the connecting body and the tubular body are set out, by means of which the gas tightness is maintained when the head is connected to the tubular body.
  • the lower part of the head piece can consist of an impermeable plastic or of a coated or uncoated metal.
  • a 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, which e.g. can consist of polyethylene or polypropylene.
  • Both plastic layers 3, 3 ' are made from one material or each from a different material and with different thicknesses, optionally also using intermediate layers depending on the intended tube content, the tube sizes or other parameters.
  • the tube also contains a prefabricated conical head piece 4 which opens at the tapered end into a neck 6 surrounding the removal opening 5 of the tube.
  • the neck 6 has an external thread, not shown, for screwing on a closure cap, not shown.
  • the head piece 4 has an outer diameter D. which is smaller than the inner diameter D of the tubular body 1.
  • the head piece 4 is made in two parts from an upper part 7 with the neck 6 and a lower part 8.
  • the lower part 8 closes the upper head part 7 completely downwards.
  • the lower part 8 preferably has a cylindrical upward projection 9, which forms at least part of the inner wall of the removal opening 6.
  • the upper part 7 has a recess corresponding to the projection 9.
  • the upper head part 7 consists of a thermoplastic material which can be relatively permeable, e.g. B.
  • This upper part 7 of the head piece 4 should consist of a plastic that can easily be fused with the plastic layers 3, 3 'of the laminate film.
  • the lower head part 8 should consist of a relatively impermeable plastic material, for example a thermoplastic material with greater impermeability such as polypropylene, polyamide, polyester or a thermosetting plastic such as urea-formaldehyde, polyurethane or another plastic or a plastic mixture with comparable properties. These materials are comparatively difficult to weld to the material of the plastic layers 3, 3 'of the laminate film.
  • Impermeable plastic material is understood to mean any plastics which are diffusion-resistant with respect to the respective tube content and which also do not absorb any volatile constituents of the tube content. Since the gas permeability is known for almost all plastics, experimental tests with the tube contents are advantageous for the selection of suitable plastics.
  • the lower part (8) can also be made of a metal, e.g. Aluminum can be made in the form of a thin disc with or without a plastic or lacquer coating on one or both sides.
  • a metal e.g. Aluminum can be made in the form of a thin disc with or without a plastic or lacquer coating on one or both sides.
  • the head piece 4 tapers towards the outer edge and has an outer edge 10 formed by both head parts 7, which represents a partial surface of a cone, the tip of which lies on the central axis 11 of the tube and is directed opposite the removal opening 5.
  • the connecting body 13 is similar or identical to the tube tube 1 in terms of material and layer structure and thus also has an aluminum layer 2 and plastic layers 3, 3 '.
  • the connecting body 13 has a step 14.
  • the step 14 has such a height that the tapered outer edge 10 is completely or at least partially covered, so that one step side 15 lies opposite the outer edge 10 of the head piece 4.
  • the inwardly curved peripheral edge 17 of the tubular body 1 is directed with its cutting edge against the other step side 16.
  • the inwardly curved peripheral edge 17 is underlaid by the outer edge of the connecting body 13.
  • the cut edge of the bent peripheral edge 17 lies opposite the tapered outer edge 10 and is overlaid by the outer edge of the connecting body 13.
  • the head piece 4 is composed of the two parts 7 and 8, then the connecting body 13 is placed on top (according to FIG. 1 one with a step 14 according to FIG. 3 one without a step) and finally the tube body 1 becomes the connecting body 13 marginally overlapping (Fig. 1) or below (Fig. 3) molded. Then, in particular, the aluminum layer 2 in the connecting body 13 and in the edge region of the tube tube 1 is heated, in particular by high-frequency induction, as a result of which the adjacent plastic layers 3, 3 ′ are softened and melted. The fixed connection of the connecting body 13 with the head piece 4 and the tube tube 1 is ensured by pressurization, the softened plastic being distributed in such a way that the gaps 18 and 18 'are filled (see FIGS.

Landscapes

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

Description

Die Erfindung betrifft eine Verpackungstube, bestehend aus einem Tubenrohr, aus einer mehrschichtigen Verbundfolie mit metallischer Sperrschicht, einem vorgefertigten aus Kunststoff bestehenden undeine Entnahmeöffnung aufweisenden konischen Kopfstück und mit einem darauf angeordneten Verbindungskörper, der aus einer eine Metallschicht und mindestens eine Kunststoffschicht enthaltenden Verbundfolie besteht, wobei der Umfangsrand des Tubenrohrs den äusseren Rand des Verbindungskörpers unter- oder übergreifend überlappt und ihre aufeinanderliegenden Kunststoffschichten durch induktives Erzeugen von Wärme im Metall der Verbundfolien erweicht und unter Druckanwendung miteinander verschweisst sind.The invention relates to a packaging tube, consisting of a tube, a multilayer composite film with a metallic barrier layer, a prefabricated plastic conical head piece with a removal opening and a connecting body arranged thereon, which consists of a composite film containing a metal layer and at least one plastic layer, whereby the circumferential edge of the tube overlaps the outer edge of the connecting body under or overlapping and their superimposed plastic layers are softened by inductive generation of heat in the metal of the composite films and are welded together under pressure.

Eine derartige Verpackungstube ist aus den Fig. 4,5 und der dazugehörigen Beschreibung der DE-A Nr. 2628014 bekannt. Hierbei ist das vorgefertigte Kopfstück aus Polyäthylen hergestellt und mit dem Tubenrohr mittels des Verbindungskörpers durch induktive Erwärmung der Metallschicht durch Hochfrequenz,die die benachbarten Kunststoffschichten erweicht, verschweisst. Hierbei übergrieft der Umfangsrand des Tubenrohrs den Verbindungskörper Bei der Ausführung gemäss Fig. 1 und 2 untergreift der Umfangsrand des Tubenrohrs den Vetbindungskörper. Die Kunststoffschichten des Vecbindungskörpers und des Rohrkörpers bestehen aus einem Material, das sich: gut mit dem aus Polyätkuylen bestehenden Tubenkopt verschweissen lässt Diese Ausführungsform einer Verpackungstube vermag, die an sie zu stelfenden hohen Anforderungen in bezug auf Diffusionsfestigkeit, insbesondere aber hinsichtlich des Absorptionsverhaltens, nur unzureichend zu erfüllen-Such a packaging tube is known from FIGS. 4.5 and the associated description of DE-A No. 2628014. Here, the prefabricated head piece is made of polyethylene and is welded to the tube by means of the connecting body by inductive heating of the metal layer by high frequency, which softens the adjacent plastic layers. Here, the peripheral edge of the tube tube extends over the connecting body. In the embodiment according to FIGS. 1 and 2, the peripheral edge of the tube tube engages under the connecting body. The plastic layers of the connecting body and the tubular body are made of a material that can be: welded well with the tube head made of polyethylene. This embodiment of a packaging tube is only insufficiently capable of meeting the high requirements to be imposed on it with regard to resistance to diffusion, but especially with regard to the absorption behavior to fulfill-

Dadurch, dass der Verbindungskörper eine Sperrschichtaufweistwerden bei dieser Tube Tiele der Tubenschulter gegen Diffusion insbesondere von aussen geschützt, jedoch absorbiert der zwischen der Sperrschicht und dem Füllgut angeordnete Tubenkopf aus Polyäthylen erhebliche Mengen flüchtiger Bestandteile, wie z.B. Aromastoffe, wodurch eine nachteilige Veränderung in der Qualität des Füllgutes eintritt.Due to the fact that the connecting body has a barrier layer, the tube shoulder of this tube part is protected against diffusion, in particular from the outside, but the polyethylene tube head arranged between the barrier layer and the filling material absorbs considerable amounts of volatile constituents, e.g. Flavorings, which causes a disadvantageous change in the quality of the filling.

Bei dem in Fig. 3 der genannten Schrift dargestellten Ausführungsbeispiel bildet der Verbindungskörper mit der Sperrschicht den gesamten konischen Teil des Kopfstücks und seine Sperrschicht bildet einen Teil der Entnahmeöffnung. Nur auf diesen Teil ist dann eine Gewindekopfhülse aufgesetzt. Hierdurch ist zwar eine Verbesserung der Gasdichtigkeit erreicht, aber die Herstellung derartiger Kopfstücke ist z. B. durch die mehrfache Verformung der Aluminiumsperrschicht in verschiedenen Richtungen und die Verbindung mit der Gewindekopfhülse wesentlich komplizierter. Ausserdem leidet die Steifigkeit des Kopfes, wenn nicht weitere zusätzliche, die Herstellung verkomplizierende und verteuernde Massnahmen ergriffen werden.In the embodiment shown in FIG. 3 of the cited document, the connecting body with the barrier layer forms the entire conical part of the head piece and its barrier layer forms part of the removal opening. A threaded head sleeve is then placed only on this part. As a result, an improvement in gas tightness is achieved, but the manufacture of such head pieces is such. B. by the multiple deformation of the aluminum barrier layer in different directions and the connection with the threaded head sleeve much more complicated. In addition, the stiffness of the head suffers if no additional measures which complicate the manufacture and become more expensive are taken.

Ein anderer Weg zur Erhöhung der Gasdichtigkeit wird nach der Lehre der FR-A Nr. 2396695 beschritten. Die dort beschriebene Tube weist einen Rohrkörper aus einem Schichtmaterial mit einer undurchlässigen Aluminiumfolie auf. Bei der Herstellung der Tube wird der Rohrkörper auf einen Dorn aufgeschoben, auf den ein Trenneinsatz aus einem weitgehend gasundurchlässigen Kunststoffmaterial aufgesetzt ist. DerTrenneinsatz weist eine Randfläche auf, gegen die der obere Rand des Tubenrohrs angeformt wird. In einer Spritzgussform wird dann ein Kopfstück aus einem relativ gasdurchlässigen, leicht verformbaren thermoplastischen Material (Polyäthylen) angegossen. Zur Verringerung der Lösbarkeit des Trenneinsatzes vom Kopfstück weist der Trenneinsatz ringförmige Wülste auf, die in das Kopfstück hineinragen. Wenn der Trenneinsatz aus einem Material besteht, das sich nicht unter üblichen Bedingungen mit dem Material des Kopfstücks verschmelzen; lässt, was bei den bekannten undurchlässigen für Sperrelemente geeigneten Kunststoffen der Fall ist, hängt die Verbindung vollständig von der Wulst-Nutverbindung ab. Eine Variante dieser Lösung sieht vor, dass der Trenneinsatz auch in den Hals geführt ist und den Ausgabekanal umgibt. Durch das Angiessen der dadurch relativ dicken Kopfstücke an das Tubenrohr wird; auch die Herstellungstechnologie kompliziert aufwendig und teuer.Another way to increase gas tightness is followed according to the teaching of FR-A No. 2396695. The tube described there has a tubular body made of a layer material with an impermeable aluminum foil. In the manufacture of the tube, the tubular body is pushed onto a mandrel on which a separating insert made of a largely gas-impermeable plastic material is placed. The separating insert has an edge surface against which the upper edge of the tube is molded. A head piece made of a relatively gas-permeable, easily deformable thermoplastic material (polyethylene) is then cast in an injection mold. To reduce the detachability of the separating insert from the head piece, the separating insert has annular beads which protrude into the head piece. If the dividing insert is made of a material that does not fuse with the material of the head piece under normal conditions; leaves what is the case with the known impermeable plastics suitable for locking elements, the connection depends entirely on the bead-groove connection. A variant of this solution provides that the separating insert is also led into the neck and surrounds the dispensing channel. By pouring the relatively thick head pieces onto the tube, the manufacturing technology is also complicated and expensive.

Aufgabe der Erfindung istes, eine Verpackungstube der eingangs genannten Aut anzugeben, die einen Tubenhalt auch im Kopfbereich nahezu vollsrändig gasdicht umgibt, ggf. den Verbrauch an undurchlassigem, nur schwer mit den Kunststoffen der Folien verschmelzbarem Kunststoff herabmindert und deren Einzelteile in einem Arbeitsgang auf einfache Weise fest miteinander verbindbar sind-The object of the invention is to provide a packaging tube of the type mentioned at the outset, which surrounds a tube hold in the head region almost completely gas-tight, possibly reducing the consumption of impermeable plastic which is difficult to melt with the plastics of the foils, and the individual parts thereof in one operation in a simple manner are firmly connected

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

Durch die zweiteilige Ausführung kann der obere Teil vollständig durch den unteren gasundurchlässigen Teil abgedeckt werden, so dass die Gasdichtigkeit gewährleistet ist. Da der obere Teil leicht mit den Kunststoffschichten derVerbundfolie veschmolzen werden kann, wird auch eine feste Verbindung dieser Teile erreicht. Durch den Hintersckrnitt, z.B. in Form einer teilkegetförmigen Ausbildung der Aussenrandkante, wird durch das Heranführen und Anformen von Kunststoffmaterial auf diese Kante eine feste Verriegelung zwischen oberem und unterem Kopfteil gewährleistet. Das Kopfstück kann für verschiedene Tubendurchmesser ohne Änderung verwendet werden. Bei unterschiedlichen Durchmessern ist lediglich der Verbindungskörper zu ändern, so dass der Verbrauch an teurem undurchlässigem Kunststoffmaterial trotz Vergrösserung des Tubendurchmessers gleich gering bleibt. In den Unteransprüchen 2 und 3 sind zwei vorteilhafte Varianten der Verbindung der Kopfteile des Verbindungskörpers und des Rohrkörpers dargelegt, durch die die Gasdichtigkeit bei der Verbindung des Kopfes mit dem Rohrkörper aufrechterhalten wird.Due to the two-part design, the upper part can be completely covered by the lower gas-impermeable part, so that gas-tightness is guaranteed. Since the upper part can easily be fused with the plastic layers of the composite film, a firm connection of these parts is also achieved. Due to the undercut, e.g. in the form of a partially keg-shaped design of the outer edge, a firm locking between the upper and lower head part is ensured by the introduction and molding of plastic material onto this edge. The head piece can be used for different tube diameters without change. In the case of different diameters, only the connecting body has to be changed, so that the consumption of expensive impermeable plastic material remains the same despite the enlargement of the tube diameter. In the subclaims 2 and 3, two advantageous variants of the connection of the head parts of the connecting body and the tubular body are set out, by means of which the gas tightness is maintained when the head is connected to the tubular body.

Durch die Massnahmen des Anspruchs 4 wird einerseits die Haftung zwischen den beiden Teilen des Kopfes erhöht, so dass zu deren Zusammenhalt nur geringere Verriegelungskräfte erforderlich sind und andererseits ist es dadurch möglich, auch den Hals gasdicht zu gestalten.Through the measures of claim 4, on the one hand, the liability between the two parts of the head, so that only smaller locking forces are required to hold them together, and on the other hand it is also possible to make the neck gas-tight.

Das untere Teil des Kopfstücks kann je nach Verwendungszweck der Tube aus einem undurchlässigen Kunststoff oder auch aus einem beschichteten oder unbeschichteten Metall bestehen.Depending on the intended use of the tube, the lower part of the head piece can consist of an impermeable plastic or of a coated or uncoated metal.

Nachstehend wird die Erfindung anhand von Ausführungsbeispielen unter bezug auf schematische unmassstäbliche Zeichnungen näher erläutert. Es zeigt:

  • Fig. 1 einen Ausschnitt des Kopfbereichs einer Verpackungstube in der Anordnung der Einzelteile vor deren unlösbarer Verbindung unter Verwendung eines stufenförmigen Verbindungskörpers in einer Schnittdarstellung,
  • Fig. 2 den Ausschnitt gemäss Fig. 1 nach dem Verschweissen der Einzelteile in einer Schnittdarstellung (rechte Hälfte) und in Draufsicht (linke Hälfte),
  • Fig. 3 den gleichen Ausschnitt gemäss Fig. 1 mit einem stufenlosen Verbindungskörper,
  • Fig. 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:
  • 1 shows a section of the head region of a packaging tube in the arrangement of the individual parts before their permanent connection using a stepped connecting body in a sectional view,
  • 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),
  • 3 shows the same detail according to FIG. 1 with a stepless connecting body,
  • 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 Tube enthält ein Tubenrohr 1 aus einer Verbundfolie in Form einer dreischichtigen Laminatfolie. Eine zentrale Aluminiumschicht2 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 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, which e.g. can consist of polyethylene or polypropylene. Both plastic layers 3, 3 'are made from one material or each from a different material and with different thicknesses, optionally also using intermediate layers depending on the intended tube content, the tube sizes or other parameters.

Die Tube enthält ferner ein vorgefertigtes konisches Kopfstück 4, das am verjüngten Ende in einen die Entnahmeöffnung 5 der Tube umgebenden Hals 6 mündet. Der Hals 6 weist ein nicht dargestelltes Aussengewinde zum Aufschrauben einer nicht dargestellten Verschlusskappe auf. Das Kopfstück 4 weist einen Aussendurchmesser D. auf, der kleiner ist als der Innendurchmesser D des Rohrkörpers 1. Das Kopfstück 4 ist zweiteilig aus einem oberen Teil 7 mit dem Hals 6 und einem unteren Teil 8 ausgeführt. Der untere Teil 8 schliesst das obere Kopfteil 7 vollständig nach unten ab. Der untere Teil 8 weist vorzugsweise einen zylindrischen nach oben gerichteten Vorsprung 9 auf, der zumindest einen Teil der Innenwandung der Entnahmeöffnung 6 bildet. Der obere Teil 7 weist eine dem Vorsprung 9 entsprechende Ausnehmung auf. Das obere Kopfteil 7 besteht aus einem thermoplastischen Kunststoff, der relativ durchlässig sein kann, z. B. aus Polyäthylen. Dieser obere Teil 7 des Kopfstücks 4 soll aus einem Kunststoff bestehen, der sich leicht mit den Kunststoffschichten 3, 3' der Laminatfolie verschmelzen lässt. Der untere Kopfteil 8 soll aus einem relativ undurchlässigen Kunststoffmaterial bestehen, beispielsweise aus einem thermoplastischen Material mit grösserer Undurchlässigkeit wie Polypropylen, Polyamid, Polyester oder einem warmhärtenden Kunststoff wie Harnstoff-Formaldehyd, Polyuretan oder einem anderen Kunststoff oder einer Kunststoffmischung mit vergleichbaren Eigenschaften. Diese Materialien lassen sich vergleichsweise nur schwer mit dem Material der Kunststoffschichten 3, 3' der Laminatfolie verschweissen.The tube also contains a prefabricated conical head piece 4 which opens at the tapered end into a neck 6 surrounding the removal opening 5 of the tube. The neck 6 has an external thread, not shown, for screwing on a closure cap, not shown. The head piece 4 has an outer diameter D. which is smaller than the inner diameter D of the tubular body 1. The head piece 4 is made in two parts from an upper part 7 with the neck 6 and a lower part 8. The lower part 8 closes the upper head part 7 completely downwards. The lower part 8 preferably has a cylindrical upward projection 9, which forms at least part of the inner wall of the removal opening 6. The upper part 7 has a recess corresponding to the projection 9. The upper head part 7 consists of a thermoplastic material which can be relatively permeable, e.g. B. made of polyethylene. This upper part 7 of the head piece 4 should consist of a plastic that can easily be fused with the plastic layers 3, 3 'of the laminate film. The lower head part 8 should consist of a relatively impermeable plastic material, for example a thermoplastic material with greater impermeability such as polypropylene, polyamide, polyester or a thermosetting plastic such as urea-formaldehyde, polyurethane or another plastic or a plastic mixture with comparable properties. These materials are comparatively difficult to weld to the material of the plastic layers 3, 3 'of the laminate film.

Unter undurchlässigem Kunststoffmaterial werden beliebige Kunststoffe verstanden, die bezüglich des jeweiligen Tubeninhalts diffusionsfest sind und auch keine flüchtigen Bestandteile des Tubeninhalts absorbieren. Da die Gasdurchlässigkeit für fast alle Kunststoffe bekannt ist, sind zur Auswahl der geeigneten Kunststoffe experimentelle Prüfungen mit dem Tubeninhalt vorteilhaft.Impermeable plastic material is understood to mean any plastics which are diffusion-resistant with respect to the respective tube content and which also do not absorb any volatile constituents of the tube content. Since the gas permeability is known for almost all plastics, experimental tests with the tube contents are advantageous for the selection of suitable plastics.

Durch die Verringerung des Durchmessers des Kopfes (4) im Vergleich zu den bekannten Tuben, wird auch der Verbrauch an teurerem undurchlässigem Kunststoffmaterial beschränkt.By reducing the diameter of the head (4) compared to the known tubes, the consumption of more expensive impermeable plastic material is also limited.

Der untere Teil (8) kann auch aus einem Metall, z.B. Aluminium in Form einer dünnen Scheibe mit oder ohne einer ein- oder beidseitigen Kunststoff-oder Lackbeschichtung ausgeführt werden.The lower part (8) can also be made of a metal, e.g. Aluminum can be made in the form of a thin disc with or without a plastic or lacquer coating on one or both sides.

Das Kopfstück 4 verjüngt sich zum Aussenrand und weist eine von beiden Kopfteilen 7, gebildete Aussenrandkante 10 auf, die eine Teilfläche eines Kegels darstellt, dessen Spitze auf der Zentralachse 11 der Tube liegt und entgegengesetzt zur Entnahmeöffnung 5 gerichtet ist.The head piece 4 tapers towards the outer edge and has an outer edge 10 formed by both head parts 7, which represents a partial surface of a cone, the tip of which lies on the central axis 11 of the tube and is directed opposite the removal opening 5.

Auf dem konischen Schulterteil 12 des Kopfstücks 4 liegt dessen Form angepasst an den Hals 6 anstossend ein ringscheibenförmiger konischer Verbindungskörper 13 auf. Der Verbindungskörper 13 ist ähnlich oder identisch wie das Tubenrohr 1 bezüglich Material und Schichtaufbau gestaltet und weist somit auch eine Aluminiumschicht 2 und Kunststoffschichten 3, 3' auf.On the conical shoulder part 12 of the head piece 4, the shape of which is adapted to the neck 6 and abuts an annular disk-shaped conical connecting body 13. The connecting body 13 is similar or identical to the tube tube 1 in terms of material and layer structure and thus also has an aluminum layer 2 and plastic layers 3, 3 '.

Gemäss dem in Fig. 1 und 2 dargestellten Ausführungsbeispiel weist der Verbindungskörper 13 eine Stufe 14 auf. Die Stufe 14 hat eine solche Höhe, dass die verjüngte Aussenrandkante 10 ganz oder zumindest teilweise überdeckt ist, so dass die eine Stufenseite 15 gegenüber der Aussenrandkante 10 des Kopfstücks 4 liegt. Gegen die andere Stufenseite 16 ist der nach innen gebogene Umfangsrand 17 des Rohrkörpers 1 mit seiner Schnittkante gerichtet. Der nach innen gebogene Umfangsrand 17 wird vom äusseren Rand des Verbindungskörpers 13 unterlagert.According to the embodiment shown in FIGS. 1 and 2, the connecting body 13 has a step 14. The step 14 has such a height that the tapered outer edge 10 is completely or at least partially covered, so that one step side 15 lies opposite the outer edge 10 of the head piece 4. The inwardly curved peripheral edge 17 of the tubular body 1 is directed with its cutting edge against the other step side 16. The inwardly curved peripheral edge 17 is underlaid by the outer edge of the connecting body 13.

Bei dem in Fig. 3, 4 dargestellten Ausführungsbeispiel liegt die Schnittkante des abgebogenen Umfangsrandes 17 gegenüber der verjüngten Aussenrandkante 10 und wird von dem äusseren Rand des Verbindungskörpers 13 überlagert.3, 4, the cut edge of the bent peripheral edge 17 lies opposite the tapered outer edge 10 and is overlaid by the outer edge of the connecting body 13.

Zur Herstellung der Tube wird das Kopfstück 4 aus den beiden Teilen 7 und 8 zusammengesetzt, dann wird der Verbindungskörper 13 aufgelegt (gemäss Fig. 1 einer mit einer Stufe 14 gemäss Fig. 3 einer ohne Stufe) und schliesslich wird der Tubenkörper 1 den Verbindungskörper 13 randlich überlappend (Fig. 1) bzw. untergreifend (Fig. 3) angeformt. Sodann wird z.B. durch Hochfrequenzinduktion insbesondere die Aluminiumschicht 2 im Verbindungskörper 13 und im Randbereich des Tubenrohrs 1 erhitzt, wodurch die anliegenden Kunststoffschichten 3,3' erweicht und angeschmolzen werden. Durch Druckbeaufschlagung wird diefeste Verbindung des Verbindungskörpers 13 mit dem Kopfstück 4 und dem Tubenrohr 1 gewährleistet, wobei der erweichte Kunststoff derart verteilt wird, dass die Spalten 18 bzw. 18' ausgefüllt werden (s. Fig. 2 u. 4). Durch die Ausfüllung des Spalts 18 wird eine gfeichmässige Oberfläche erzielt und durch die des Spalts 18' wird der hinterschnittene Bereich des Kopfstücks 4 ausgefüllt, wodurch die feste und dauerhafte Verriegelung der beiden Teile 7 und 8 des Kopfstücks gewährleistet wird. Bei wesentlichen Dikkenunterschieden des Randbereichs des Tubenkopfes 4 und der Stärke des verwendeten Tubenlaminats wird ein solcher Kunststoffmateriateriafluss sichergestellt dass die Verbindungsstelle zwischen oberem und unterem Teil 7, 8 zur Verriegelung der beiden Teile miteinander überdeckt ist und quasi eine Haltefassung bildet.To manufacture the tube, the head piece 4 is composed of the two parts 7 and 8, then the connecting body 13 is placed on top (according to FIG. 1 one with a step 14 according to FIG. 3 one without a step) and finally the tube body 1 becomes the connecting body 13 marginally overlapping (Fig. 1) or below (Fig. 3) molded. Then, in particular, the aluminum layer 2 in the connecting body 13 and in the edge region of the tube tube 1 is heated, in particular by high-frequency induction, as a result of which the adjacent plastic layers 3, 3 ′ are softened and melted. The fixed connection of the connecting body 13 with the head piece 4 and the tube tube 1 is ensured by pressurization, the softened plastic being distributed in such a way that the gaps 18 and 18 'are filled (see FIGS. 2 and 4). By filling the gap 18 an equal surface is achieved and by that of the gap 18 'the undercut area of the head piece 4 is filled, whereby the firm and permanent locking of the two parts 7 and 8 of the head piece is ensured. In the case of significant differences in thickness of the edge area of the tube head 4 and the thickness of the tube laminate used, such a plastic material flow is ensured that the connection point between the upper and lower parts 7, 8 is covered with one another for locking the two parts and forms a holding mount.

Claims (6)

1. Terbular container ,comprising a tubular body (1) formed of a multi-layered foil including a metallie barrier layer (2) and at least one layer (3, 3') of synthetic material, a prefabricated conical headpiece (4) formed of synthetic material, having a discharge opening (5), a connecting element (13) disposed on said headpiece including a multi-layered foil having a metallic layer (2) and at least one layer of synthetic material (3, 3'), the peripheral rim of said tubular body (1) overlapping the outer rim of said connecting body (13) from above or below and the superimposed layers (3, 3') of synthetic materials of said tubular body (1) and said connecting element (13) being welded to one another by inductive generation of heat in the metallic layers thereof and the exertion of pressure thereonto, characterized in that said headpiece (4) consists of two superimposed portions (7, 8), the lower portion (8) completely covering the underside of the upper portion (7) and formed of a non- permeable material, that the outer diameter (Da) of said headpiece (4) is less than the inner diameter (Di) of said tubular body (1), that the outer rim edgeformed of the two portions (7, 8) is undercut, and that synthetic material of the multi-layered foil of the connecting element (13) or the tubular body (1) is attached to the undercut outer rim edge (10) of said headpiece (4) so as to overlap at least the interface of the upper and lower portions (7, 8) at said outer rim edge (10).
2. Tubular container according to Claim 1, characterized in that the peripheral rim (17) of said tubular body (1) )'bent inwardly abuts the outer rim edge (10) of said headpiece (4) and is overlapped by the outer zone of the rim of said connecting element (13).
3. Tubular container according to Claim 1, characterized in that said connecting element (13) includes a step (14) having a side (15) which abuts the outer rim edge (10) of said headpiece (4) and the inwardly bent peripheral rim (17) of said tubular body (1) abuts the other side (16) of said step (14) and overlaps the outer rim of said connecting element (13).
4. Tubular container according to any one of Claims 1 to 3, characterized in that the lower portion (8) of said headpiece (4) is provided with a cylindrical projection (9) forming at least part of the inner wall of the discharge opening (5) of said headpiece (4), and the upper portion (7) of said headpiece (4) is provided with an appropriate corresponding recess.
5. Tubular container according to any one of Claims 1 to 4, characterized in that the lower portion (8) of said headpiece (4) consists of a non- permeable synthetic material.
6. Tubular container according to any one of Claims 1 to 4, characterized in that the lower portion (8) of said headpiece (4) consists of metallic material.
EP83110690A 1982-10-29 1983-10-26 Tubular container Expired EP0111131B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8230491U 1982-10-29
DE8230491U DE8230491U1 (en) 1982-10-29 1982-10-29 Packing room

Publications (2)

Publication Number Publication Date
EP0111131A1 EP0111131A1 (en) 1984-06-20
EP0111131B1 true EP0111131B1 (en) 1986-02-19

Family

ID=6745117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110690A Expired EP0111131B1 (en) 1982-10-29 1983-10-26 Tubular container

Country Status (2)

Country Link
EP (1) EP0111131B1 (en)
DE (2) DE8230491U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19808295A1 (en) 1998-02-27 1999-11-11 Boehringer Ingelheim Int Medical fluid container
CH696318A5 (en) * 2002-12-09 2007-04-13 Packtech Ltd Packaging container for pasty packaging materials, particularly packaging tube

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL157268C (en) * 1968-03-20
JPS5712739B2 (en) * 1973-04-23 1982-03-12
JPS583902B2 (en) * 1975-06-27 1983-01-24 カ−ル・メ−ゲルレ packaging tube
US4185757A (en) * 1977-07-08 1980-01-29 Schultz Robert S Collapsible dispensing tube having an anchored barrier member

Also Published As

Publication number Publication date
DE3362199D1 (en) 1986-03-27
EP0111131A1 (en) 1984-06-20
DE8230491U1 (en) 1982-12-30

Similar Documents

Publication Publication Date Title
DE3240225C2 (en) Packing room
DE1761596C3 (en) Collapsible dispensing container
DE69727123T2 (en) FLOOR GEOMETRY OF EXTRUSION BLOW MOLDED CONTAINERS
DE3322976C2 (en) Method of manufacturing a paper container provided with a reinforcing ring
DE10054874C2 (en) Fuel tank
EP2069210B1 (en) Packaging container and method of producing the same
DE2636259A1 (en) TUBE AND METHOD OF MANUFACTURING IT
DE60107314T2 (en) Plastic container and method for its production
DE102005025905A1 (en) A fuel tank and method for reducing vapor permeation through a fuel tank
EP0114398A2 (en) Compressible laminated tubular container
AT402365B (en) RECEIVER WITH A CYLINDRICAL CONTAINER AND BLOOD SAMPLING TUBE WITH SUCH A RECEIVER
WO1998045188A1 (en) Plastic soldered pouring spout part for a refillable container
DE2262989A1 (en) TUBULAR CONTAINER AND METHOD FOR MANUFACTURING IT
DE2419530C3 (en) Tube-shaped container made of a multilayered thermoplastic resin film
WO2003013965A1 (en) Packaging container
DE1786574B2 (en) Compressible container made from a multilayer material and process for its manufacture Separated from: 1486175
DE2436937B2 (en) Material used for the manufacture of packaging containers and a method for the manufacture thereof
EP0111131B1 (en) Tubular container
DE2826680A1 (en) COMPRESSIBLE DISPENSER CONTAINER AND METHOD FOR MANUFACTURING IT
DE3039299C2 (en)
DE3620486C2 (en) Compressible tube with membrane cover
DE102016102247A1 (en) Closure device for a container
WO2020025154A1 (en) Tubular packaging
DE2353304A1 (en) CAPSULE LOCKING FOR SEALING CONTAINERS OF DIFFERENT TYPES AND METHODS FOR THE MANUFACTURING THEREOF
DE1561545C (en) Container with a rigid outer sleeve and an insert

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19840320

AK Designated contracting states

Designated state(s): CH DE FR GB IT LI

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH DE FR GB IT LI

REF Corresponds to:

Ref document number: 3362199

Country of ref document: DE

Date of ref document: 19860327

ITF It: translation for a ep patent filed

Owner name: DR. ING. A. RACHELI & C.

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19921015

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19921016

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19921118

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19921218

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19931026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19931031

Ref country code: CH

Effective date: 19931031

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19931026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940630

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST