EP0939033B1 - Filling method and apparatus for a dual chamber tube - Google Patents
Filling method and apparatus for a dual chamber tube Download PDFInfo
- Publication number
- EP0939033B1 EP0939033B1 EP98124639A EP98124639A EP0939033B1 EP 0939033 B1 EP0939033 B1 EP 0939033B1 EP 98124639 A EP98124639 A EP 98124639A EP 98124639 A EP98124639 A EP 98124639A EP 0939033 B1 EP0939033 B1 EP 0939033B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- filling
- groove
- partition
- wall
- 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 - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
- B65B3/16—Methods of, or means for, filling the material into the containers or receptacles for filling collapsible tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B29/00—Packaging of materials presenting special problems
- B65B29/10—Packaging two or more different substances isolated from one another in the package but capable of being mixed without opening the package, e.g. forming packages containing a resin and hardener isolated by a frangible partition
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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
- B65D35/22—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 with two or more compartments
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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
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
- B65D81/3261—Flexible containers having several compartments
Definitions
- the invention relates to a method for filling a Two-chamber plastic tube according to the generic term of claim 1. Furthermore, the invention relates a device for performing the method according to the preamble of claim 5.
- Two-chamber tubes made of plastic have been around for some time known (WO 97/47522 A) and offer the advantage of two to be able to absorb different substances in one tube without coming into contact with each other, as is the case, for example necessary with a two-component adhesive is.
- a two-chamber tube is produced initially as a flat multilayer structure, whereby between an upper and a lower tube wall layer the plastic layer forming the partition is arranged. The tube then becomes an approximate circular shape erected, the tube wall, which is diametrically in the tube should extend, a significant excess length has the tube diameter. This excess length leads to the fact that the partition is not straight, but an unpredictably curved shape occupies.
- the fingers limit that for Existing movement space and due to the high, speeds occurring in a tube filling machine there is a risk that the fingers and the filling nozzles will come together hinder each other.
- the partition intrinsically unstable and only correctly positioned if the Fingers are properly immersed and the partition have spanned. Positional deviations of the fingers, like them after long operation of the tube filling machine as a result usual tolerances can lead to the fact that the partition wall only slightly or not at all is tense, which creates the risk of incorrect filling.
- FR 961 154 shows a two-chamber tube, in the Interior a partition is used.
- the partition is not attached to the tube wall, but it is removable from the tube and in the tube held by having them at the rear end of the tube the tube wall crimped and on the other hand in the head of the Tube is held.
- the invention has for its object a method to create the type mentioned, in which the partition with high stability and security is positioned.
- a device is to be created with which the process in a simple and inexpensive manner is executable.
- the partition wall is thus tightened, by the end portions of the partition due to the Fixing on the tube wall this essentially follow and the middle area between the end areas the dividing wall is essentially straight diametrical based on the circular tube cross section.
- the partition wall course given so that the filling nozzles with high accuracy in those defined by the tube wall and the partition Chambers can be introduced.
- a disability of the Filling process due to an uncontrolled position of the Partition is therefore excluded.
- the molding head When connecting, the middle area of the Partition will not be damaged.
- the molding head preferably has a groove in which the central region the partition was added without contact can be.
- the task is thereby solved that the filling unit upstream of a molding unit is a heated heated insertable into the tube Molding head that uses the end portions of the partition formed on opposite sides of the forming head Keeps contact surfaces aligned, and outside the tube arranged press jaws, which against the Contact surfaces of the molding head are movable.
- the contact surfaces are on opposite Formed sides of the molding head. Between two contact surfaces extends in the mold head Middle area of the partition accommodating without contact Groove, which thus the molding head in two insertion sections divided.
- the invention provided that the insertion portions of the Molding head on its insertion side facing the tube each have guide surfaces, for example can be achieved in that the guide surfaces are inclined towards each other in such a way that the insertion sections one tapering toward its lower free end Have shape.
- the contact surfaces are usually parallel to each other aligned.
- the groove connecting the contact surfaces can run perpendicular to it, but it has proven to be beneficial proven when the groove is oblique to the contact surfaces runs, being between the respective contact surface and the associated groove section an acute angle in the order of magnitude of approx. 60 ° to 70 ° has proven to be useful Has. This means that the middle of the Partition runs essentially diagonally in the groove and only selective contact with the groove wall in the area of the transition to the contact surfaces.
- a molding unit 10 which in a tube filling machine can be installed.
- the filling unit comprises a vertical stand 11 attached to its top ends in a horizontal cross member 12.
- a vertically movable Bracket 13 On the cross member 12 is a vertically movable Bracket 13 a shaped head 14 mounted in a dashed Tube 20 shown at the top, open End can be introduced.
- the molding head 14 are on opposite sides on horizontally movable Brackets 15 associated press jaws 16 associated with when the molding head 14 is retracted from the outside of the Place tube 20 and clamp it against the forming head 14 can, as indicated in Figure 2.
- the forming head 14 is shown in detail in FIGS. 4 and 5 shown.
- the molding head 14 has on its front first angled insertion side into the tube extending groove 17, which extends over the entire height of the Forming head 14 extends and thus in two finger-like, insertion sections protruding to the insertion side 14a and 14b divided.
- On their side facing the entry page The top are at the insertion portions 14a, 14b guiding surfaces inclined towards each other, which has a tapering to the insertion sections, Give pyramid-like configuration.
- the flanks 17a of the groove 17 are over a large part the groove length and especially in the middle area each provided with a large recess 18, so that the groove width is increased in sections.
- FIG. 3a shows a top view of a conventional two-chamber tube 20 made of plastic.
- the tube wall 21 is closed erected in a circular shape, with two diametrically between opposite connection points 23 and 24 of the Tube wall 21 is an existing plastic film Partition 22 extends the tube interior in two independent chambers 25 and 26 divided.
- the partition 22 has a significant excess length compared to the diameter the tube 20, so that in the example shown S-shaped between the two connection points 23 and 24 runs.
- the mold head is from above into the tube 20 14 retracted with its introducer, the insertion section 14a in the chamber 25 and the insertion section 14b comes to rest in the chamber 26.
- the partition 22 is formed by the insertion side of the molding head 14 Guide surfaces passed into the groove 17 so that the partition 22 with its end regions 22a in Plant on the opposite sides of the molding head 14 formed contact surfaces 14c and 14d, while the middle region 22b of the partition wall 22 is in Longitudinal direction of the groove 17 extends and in this due the inclination of the groove 17 is diagonal. This State is shown in Figure 3b.
- the End regions 22a of the partition 22 essentially each kept straight and parallel to each other.
- the Tube 20 moved the press jaws against the forming head 14, so that the inside of the tube wall 21 with the help of the molding head 14 heated end regions 22a of the partition 22 comes into full contact.
- this sweat or Connection position are the components for a predetermined period of time held so that a superficial Welding the end regions 22a of the partition wall 22 with the tube wall 21.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closing Of Containers (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Basic Packing Technique (AREA)
- Package Closures (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Befüllen einer Zwei-Kammer-Tube aus Kunststoff gemäß dem Oberbegriff des Anspruchs 1. Darüber hinaus betrifft die Erfindung eine Vorrichtung zur Durchführung des Verfahrens gemäß dem Oberbegriff des Anspruchs 5.The invention relates to a method for filling a Two-chamber plastic tube according to the generic term of claim 1. Furthermore, the invention relates a device for performing the method according to the preamble of claim 5.
Zwei-Kammer-Tuben aus Kunststoff sind seit einiger Zeit bekannt (WO 97/47522 A) und bieten den Vorteil, zwei verschiedene Stoffe in einer Tube aufnehmen zu können, ohne daß sie miteinander in Kontakt kommen, wie es beispielsweise bei einem Zwei- Komponenten-Kleber notwendig ist. Die Herstellung einer Zwei-Kammer-Tube erfolgt zunächst als ebener Mehrschichtaufbau, wobei zwischen einer oberen und einer unteren Tubenwandungsschicht eine die Trennwand bildende Kunststoff-Lage angeordnet wird. Anschließend wird die Tube zu annähernder Kreisform aufgerichtet, wobei die Tubenwand, die sich diametral in der Tube erstrecken soll, eine deutliche Überlänge gegenüber dem Tubendurchmesser aufweist. Diese Überlänge führt dazu, daß die Trennwand nicht geradlinig verläuft, sondern eine in nicht vorhersehbarer Weise gekrümmte Form einnimmt.Two-chamber tubes made of plastic have been around for some time known (WO 97/47522 A) and offer the advantage of two to be able to absorb different substances in one tube without coming into contact with each other, as is the case, for example necessary with a two-component adhesive is. A two-chamber tube is produced initially as a flat multilayer structure, whereby between an upper and a lower tube wall layer the plastic layer forming the partition is arranged. The tube then becomes an approximate circular shape erected, the tube wall, which is diametrically in the tube should extend, a significant excess length has the tube diameter. This excess length leads to the fact that the partition is not straight, but an unpredictably curved shape occupies.
Bei dem Befüllen der beiden Kammern muß in jede Kammer eine Fülldüse eingefahren werden. Es hat sich gezeigt, daß die unkontrollierte Lage der Trennwand das Einfahren der Fülldüsen häufig behindert oder sogar dazu führt, daß beide Fülldüsen in die gleiche Kammer einfahren, so daß der Füllvorgang abgebrochen werden muß.When filling the two chambers must be in each chamber a filling nozzle can be retracted. It has shown, that the uncontrolled position of the partition is retracting the filling nozzles often hindered or even leads to the fact that Drive both filling nozzles into the same chamber so that the filling process must be stopped.
Um Fehlfüllungen der Zwei-Kammer-Tuben zu vermeiden, ist es aus der WO 97/47522 A bekannt, die sich mit Übermaß im wesentlichen diametral durch den Tubeninnenraum erstreckende Trennwand zunächst in einen gespannten, den Innenraum des Tubenkörpers im wesentlichen geradlinig überspannenden Zustand zu bringen, bevor die Fülldüsen in die einzelnen Kammern eingeführt werden. Die Verstellung der Trennwand wird dadurch erreicht, daß in jede Kammer ein Finger von oben eingeführt und derart um die Längsache der Tube geschwenkt wird, so daß die Trennwand in eine gespannte Lage gelangt. Die Trennwand muß mittels der Finger solange in der gespannten Stellung gehalten werden, bis die Fülldüsen in die Kammer eingeführt, der Füllvorgang abgeschlossen und die Düsen wieder herausgefahren sind. Die Finger beschränken dabei den für die Düsen vorhandenen Bewegungsraum und aufgrund der hohen, in einer Tubenfüllmaschine auftretenden Geschwindigkeiten besteht die Gefahr, daß die Finger und die Fülldüsen sich gegenseitig behindern. Darüber hinaus ist die Trennwand in sich labil und nur dann korrekt positioniert, wenn die Finger ordnungsgemäß eingetaucht sind und die Trennwand aufgespannt haben. Lageabweichungen der Finger, wie sie nach längerem Betrieb der Tubenfüllmaschine infolge üblicher Toleranzen auftreten, können dazu führen, dass die Trennwand nur in geringem Maß oder gar nicht mehr gespannt ist, wodurch die Gefahr einer Fehlfüllung besteht. To avoid incorrect filling of the two-chamber tubes, it is known from WO 97/47522 A, which deals with excess in substantially diametrically extending through the tube interior Partition first into a taut, the Interior of the tube body essentially straight bring over-stretching condition before the filling nozzles the individual chambers are introduced. The adjustment the partition is achieved in that in each chamber a finger inserted from above and around the longitudinal axis the tube is pivoted so that the partition in a tense situation arrives. The partition must be by means of the finger is held in the cocked position for so long until the filling nozzles are inserted into the chamber Filling process completed and the nozzles moved out again are. The fingers limit that for Existing movement space and due to the high, speeds occurring in a tube filling machine there is a risk that the fingers and the filling nozzles will come together hinder each other. In addition, the partition intrinsically unstable and only correctly positioned if the Fingers are properly immersed and the partition have spanned. Positional deviations of the fingers, like them after long operation of the tube filling machine as a result usual tolerances can lead to the fact that the partition wall only slightly or not at all is tense, which creates the risk of incorrect filling.
Die FR 961 154 zeigt eine Zwei-Kammer-Tube, in deren Innenraum eine Trennwand eingesetzt ist. Dabei ist die Trennwand jedoch nicht an der Tubenwandung befestigt, sondern sie ist aus der Tube entnehmbar und in der Tube dadurch gehalten, daß sie am hinteren Ende der Tube mit der Tubenwandung verbördelt und andererseits im Kopf der Tube gehalten ist.FR 961 154 shows a two-chamber tube, in the Interior a partition is used. Here is the However, the partition is not attached to the tube wall, but it is removable from the tube and in the tube held by having them at the rear end of the tube the tube wall crimped and on the other hand in the head of the Tube is held.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der genannten Art zu schaffen, bei dem die Trennwand mit hoher Stabilität und Sicherheit positioniert ist. Darüber hinaus soll eine Vorrichtung geschaffen werden, mit der das Verfahren in einfacher und kostengünstiger Weise ausführbar ist.The invention has for its object a method to create the type mentioned, in which the partition with high stability and security is positioned. About that In addition, a device is to be created with which the process in a simple and inexpensive manner is executable.
Hinsichtlich des Verfahrens wird die vorgenannte Aufgabe durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Dabei ist vorgesehen, daß die Trennwand vor dem Einführen der Fülldüsen in ihren an die Anschlußpunkte angrenzenden Endbereichen an der Innenseite der Tubenwandung derart vollflächig und oberflächlich mit dieser verschweißt wird, daß die Länge des zwischen den Endbereichen verbleibenden Mittelbereichs im wesentlichen dem Durchmesser der Tube entspricht.With regard to the method, the aforementioned task solved by the characterizing features of claim 1. It is provided that the partition before Insert the filling nozzles in their at the connection points adjacent end areas on the inside of the tube wall so full and superficial with this is welded that the length of the between the end areas remaining middle range essentially that Corresponds to the diameter of the tube.
Erfindungsgemäß erfolgt somit eine Straffung der Trennwand, indem die Endbereiche der Trennwand infolge der Festlegung an der Tubenwandung dieser im wesentlichen folgen und der zwischen den Endbereichen liegende Mittelbereich der Trennwand im wesentlichen gradlinig diametral bezogen auf den kreisförmigen Tubenquerschnitt verläuft. Auf diese Weise ist ein definierter Trennwandverlauf gegeben, so daß die Fülldüsen mit hoher Genauigkeit in die von der Tubenwandung und der Trennwand definierten Kammern eingeführt werden können. Eine Behinderung des Einfüllvorganges durch eine unkontrollierte Lage der Trennwand ist somit ausgeschlossen.According to the invention, the partition wall is thus tightened, by the end portions of the partition due to the Fixing on the tube wall this essentially follow and the middle area between the end areas the dividing wall is essentially straight diametrical based on the circular tube cross section. In this way there is a defined partition wall course given so that the filling nozzles with high accuracy in those defined by the tube wall and the partition Chambers can be introduced. A disability of the Filling process due to an uncontrolled position of the Partition is therefore excluded.
Um sicherzustellen, daß die Endbereiche gleichmäßig an der Innenseite der Tubenwandung anliegen, werden die Endbereiche der Trennwand vollflächig mit der Tubenwandung verbunden.To ensure that the end areas are even the inside of the tube wall, the End areas of the partition with the entire surface of the tube wall connected.
Dabei ist vorgesehen, daß die Endbereiche der Trennwand mit der Tubenwandung oberflächlich verschweißt werden.It is provided that the end regions of the partition surface welded to the tube wall.
Um eine großflächige Schweißverbindung zwischen der Tubenwandung und der Trennwand zu erreichen, wird in bevorzugter Ausgestaltung der Erfindung in die Tube ein beheizter Formkopf eingeführt, der die Trennwand spannt und die Endbereiche der Trennwand in vorbestimmter Weise ausgerichtet hält. Daraufhin werden von der Außenseite der Tube Preßbacken gegen die die Endbereiche der Trennwand haltenden Abschnitte des Formkopfes verfahren, so daß die Tubenwandung und der zugeordnete Endbereich der Trennwand zwischen dem Formkopf und der zugeordneten Preßbacke angeordnet sind. Die Wärmewirkung des Formkopfes führt dazu, daß die Trennwand in den Endbereichen oberflächlich mit der Innenseite der Tubenwandung verbunden wird und an dieser anhaftet.To ensure a large welded connection between the Reaching the tube wall and the partition is in preferred embodiment of the invention into the tube heated molding head introduced, which tensions the partition and the end portions of the partition in a predetermined manner keeps aligned. Thereupon, from the outside the tube press jaws against the end areas of the partition holding sections of the molding head, so that the tube wall and the associated end area of the Partition between the mold head and the associated one Press jaw are arranged. The thermal effect of the molding head leads to the partition in the end areas superficially connected to the inside of the tube wall and adheres to it.
Bei dem Verbindungsvorgang darf der Mittelbereich der Trennwand nicht beschädigt werden. Zu diesem Zweck weist der Formkopf vorzugsweise eine Nut auf, in der der Mittelbereich der Trennwand berührungsfrei aufgenommen werden kann.When connecting, the middle area of the Partition will not be damaged. For this purpose points the molding head preferably has a groove in which the central region the partition was added without contact can be.
Da die Trennwand mit der Tubenwandung nur oberflächlich verbunden wird, braucht nur eine derart geringe Wärmemenge mittels des Formkopfes zugeführt werden, daß die außenliegenden Preßbacken unbeheizt und ungekühlt ausgebildet sein können.Since the partition with the tube wall is only superficial is connected, requires only such a small amount of heat by means of the molding head that the external press jaws unheated and uncooled could be.
Hinsichtlich der Vorrichtung wird die Aufgabe dadurch gelöst, daß der Fülleinheit eine Formeinheit vorgeschaltet ist, die einen in die Tube einführbaren, beheizten Formkopf, der die Endbereiche der Trennwand mit Hilfe von auf entgegengesetzten Seiten des Formkopfes ausgebildeten Anlageflächen ausgerichtet hält, und außenseitig der Tube angeordnete Preßbacken umfaßt, die gegen die Anlageflächen des Formkopfes verfahrbar sind. Auf diese Weise ist es möglich, das Ausrichten und Spannen der Trennwand direkt in der Tubenfüllmaschine als weiteren, dem eigentlichen Füllvorgang unmittelbar vorgeschalteten Behandlungsschritt vorzusehen, so daß der zeitliche und apparatetechnische Mehraufwand gering gehalten werden kann.With regard to the device, the task is thereby solved that the filling unit upstream of a molding unit is a heated heated insertable into the tube Molding head that uses the end portions of the partition formed on opposite sides of the forming head Keeps contact surfaces aligned, and outside the tube arranged press jaws, which against the Contact surfaces of the molding head are movable. To this It is possible to align and clamp the way Partition directly in the tube filling machine as another immediately upstream of the actual filling process Provide treatment step so that the temporal and additional equipment expenditure can be kept low can.
Da die mit der Tubenwandung zu verbindenden Endbereiche der Trennwand im wesentlichen diametral entgegengesetzt angeordnet sind, sind die Anlageflächen auf entgegengesetzten Seiten des Formkopfes ausgebildet. Zwischen den beiden Anlageflächen erstreckt sich im Formkopf die den Mittelbereich der Trennwand berührungsfrei aufnehmende Nut, die somit den Formkopf in zwei Einführabschnitte unterteilt.Since the end areas to be connected to the tube wall the partition essentially diametrically opposite are arranged, the contact surfaces are on opposite Formed sides of the molding head. Between two contact surfaces extends in the mold head Middle area of the partition accommodating without contact Groove, which thus the molding head in two insertion sections divided.
Um das Einführen des Formkopfes in die Tube zu erleichtern und insbesondere das Einfangen der Trennwand in der Nut zuverlässig zu gewährleisten, ist in Weiterbildung der Erfindung vorgesehen, daß die Einführabschnitte des Formkopfes auf ihrer der Tube zugewandten Einführseite jeweils Führungsflächen aufweisen, was beispielsweise dadurch erreicht werden kann, daß die Führungsflächen derart gegeneinander geneigt sind, daß die Einführabschnitte eine sich zu ihrem unteren freien Ende verjüngende Form aufweisen.To make it easier to insert the forming head into the tube and especially trapping the partition in the To ensure that groove is reliable is in further training the invention provided that the insertion portions of the Molding head on its insertion side facing the tube each have guide surfaces, for example can be achieved in that the guide surfaces are inclined towards each other in such a way that the insertion sections one tapering toward its lower free end Have shape.
Die Anlageflächen sind in der Regel parallel zueinander ausgerichtet. Die die Anlageflächen verbindende Nut kann senkrecht dazu verlaufen, es hat sich jedoch als vorteilhaft erwiesen, wenn die Nut schräg zu den Anlageflächen verläuft, wobei sich zwischen der jeweiligen Anlagefläche und dem zugeordneten Nutabschnitt ein spitzer Winkel in der Größenordnung von ca. 60° bis 70° als sinnvoll erwiesen hat. Dies führt dazu, daß der Mittelbereich der Trennwand im wesentlichen diagonal in der Nut verläuft und nur punktuellen Kontakt mit der Nutwandung im Bereich des Überganges zu den Anlageflächen besitzt. Um zuverlässig zu vermeiden, daß der Mittelbereich der Trennwand in der Nut mit der Nutwandung oder -flanke in Anlage kommt, kann an den Nutflanken jeweils eine sich über die gesamte Länge oder zumindest den mittleren Bereich der Nutlänge erstreckende Ausnehmung vorgesehen sein, so daß die Nutwandung eine möglichst großen Abstand zu dem Mittelbereich der Trennwand aufweist.The contact surfaces are usually parallel to each other aligned. The groove connecting the contact surfaces can run perpendicular to it, but it has proven to be beneficial proven when the groove is oblique to the contact surfaces runs, being between the respective contact surface and the associated groove section an acute angle in the order of magnitude of approx. 60 ° to 70 ° has proven to be useful Has. This means that the middle of the Partition runs essentially diagonally in the groove and only selective contact with the groove wall in the area of the transition to the contact surfaces. To be reliable to avoid that the middle area of the partition in the groove comes into contact with the groove wall or flank, can one on the groove flanks each over the entire Length or at least the central area of the groove length extending recess may be provided so that the Groove wall a distance as large as possible to the central area the partition has.
Weitere Einzelheiten und Merkmale der Erfindung sind aus der folgenden Beschreibung eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung ersichtlich. Es zeigen:
- Figur 1
- eine schematische Seitenansicht einer Formeinheit,
- Figur 2
- den Schnitt II-II in Figur 1,
- Figuren 3a, 3b, 3c, 3d
- die einzelnen Phasen der Befestigung der Endabschnitte der Trennwand,
- Figur 4
- eine perspektivische Vorderansicht des Formkopfes und
- Figur 5
- eine vergrößerte Vorderansicht des Formkopfes.
- Figure 1
- 1 shows a schematic side view of a molding unit,
- Figure 2
- the section II-II in Figure 1,
- Figures 3a, 3b, 3c, 3d
- the individual phases of fastening the end sections of the partition,
- Figure 4
- a front perspective view of the molding head and
- Figure 5
- an enlarged front view of the molding head.
In Figur 1 ist eine Formeinheit 10 dargestellt, die in
eine Tubenfüllmaschine eingebaut werden kann. Die Fülleinheit
umfaßt einen vertikalen Ständer 11, der an seinem
oberen Ende in einen horizontalen Querträger 12 übergeht.
Am Querträger 12 ist über eine vertikal verfahrbare
Halterung 13 ein Formkopf 14 gelagert, der in eine gestrichelt
dargestellte Tube 20 an deren oberem, offenen
Ende eingeführt werden kann. Dem Formkopf 14 sind auf
entgegengesetzten Seiten an horizontal verfahrbaren
Halterungen 15 gelagerte Preßbacken 16 zugeordnet, die
bei eingefahrenem Formkopf 14 sich von der Außenseite der
Tube 20 anlegen und diese gegen den Formkopf 14 spannen
können, wie es in Figur 2 angedeutet ist.In Figure 1, a
Der Formkopf 14 ist in den Figuren 4 und 5 im Detail
dargestellt. Der Formkopf 14 besitzt auf seiner vorderen,
zuerst in die Tube eintauchenden Einführseite eine schräg
verlaufende Nut 17, die sich über die gesamte Höhe des
Formkopfes 14 erstreckt und diesen somit in zwei fingerartige,
zur Einführseite vorstehende Einführabschnitte
14a und 14b unterteilt. Auf ihrer der Einführseite zugewandten
Oberseite sind an den Einführabschnitten 14a, 14b
jeweils gegeneinander geneigte Führungsflächen ausgebildet,
die den Einführabschnitten eine spitz zulaufende,
pyramidenartige Konfiguration verleihen.The forming
Auf den entgegengesetzten Seitenflächen des Formkopfes
14, zwischen denen sich die Nut 17 erstreckt, sind Anlageflächen
14c und 14d gebildet, deren Funktion später
erläutert wird. Mittels einer nicht dargestellten Heizeinrichtung
kann der Formkopf 14 erwärmt oder beheizt
werden.On the opposite side faces of the forming
Die Flanken 17a der Nut 17 sind über einen großen Teil
der Nutlänge und insbesondere in deren Mittelbereich
jeweils mit einer großflächigen Ausnehmung 18 versehen,
so daß die Nutbreite abschnittsweise vergrößert ist.The
Figur 3a zeigt eine Aufsicht auf eine herkömmliche Zwei-Kammer-Tube
20 aus Kunststoff. Die Tubenwandung 21 ist zu
einer Kreisform aufgerichtet, wobei zwischen zwei diametral
gegenüberliegenden Anschlußpunkten 23 bzw. 24 der
Tubenwandung 21 sich eine aus Kunststoff-Folie bestehende
Trennwand 22 erstreckt, die den Tubeninnenraum in zwei
unabhängige Kammern 25 und 26 unterteilt. Die Trennwand
22 besitzt eine deutliche Überlänge gegenüber dem Durchmesser
der Tube 20, so daß sie im dargestellten Beispiel
s-förmig zwischen den beiden Anschlußpunkten 23 und 24
verläuft.FIG. 3a shows a top view of a conventional two-
Um die Trennwand 22 zu spannen und in vorbestimmter Weise
auszurichten, wird von oben in die Tube 20 der Formkopf
14 mit seinem Einführende eingefahren, wobei der Einführabschnitt
14a in der Kammer 25 und der Einführabschnitt
14b in der Kammer 26 zu liegen kommt. Die Trennwand 22
wird dabei von den einführseitig des Formkopfes 14 ausgebildeten
Führungsflächen in die Nut 17 geleitet, so daß
sich die Trennwand 22 mit ihren Endbereichen 22a in
Anlage an den auf entgegengesetzten Seiten des Formkopfes
14 ausgebildeten Anlageflächen 14c bzw. 14d befindet,
während der Mittelbereich 22b der Trennwand 22 sich in
Längsrichtung der Nut 17 erstreckt und in dieser aufgrund
der Schrägstellung der Nut 17 diagonal verläuft. Dieser
Zustand ist in Figur 3b dargestellt. Dabei werden die
Endbereiche 22a der Trennwand 22 jeweils im wesentlichen
gerade sowie parallel zueinander gehalten.To tension the
Wie Figur 3c andeutet, werden dann von der Außenseite der
Tube 20 die Preßbacken gegen den Formkopf 14 gefahren, so
daß die Innenseite der Tubenwandung 21 mit den mit Hilfe
des Formkopfes 14 erwärmten Endbereichen 22a der Trennwand
22 vollflächig in Anlage kommt. In dieser Schweißoder
Verbindungsstellung werden die Bauteile für eine
vorbestimmte Zeitspanne gehalten, so daß eine oberflächliche
Verschweißung der Endbereiche 22a der Trennwand 22
mit der Tubenwandung 21 erfolgt. Nachdem die Preßbacken
16 zurückgefahren sind und der Formkopf 14 aus dem Tubeninnenraum
zurückgezogen wurde, ist der in Figur 3d dargestellte
Zustand erreicht, in dem die Endbereiche 22a der
Trennwand 22 vollflächig mit der Tubenwandung 21 verbunden
sind, während der Mittelbereich 22b sich im wesentlichen
geradlinig und diametral durch den Innenraum der
Tube 20 erstreckt, die eine geringe bleibende Verformung
durch den Befestigungsvorgang erfahren hat, die für den
weiteren Füllvorgang jedoch keine Nachteile bringt.As indicated in Figure 3c, the
Claims (11)
- Method for filling a two chamber tube made from plastic having a substantially circular cross section and with a separation wall (22) made from plastic and extending between two substantially diametrically opposed connecting points (23, 24) of the tube wall (21) and having a length in excess of the diameter of the tube and, together with the tube walls (22), forming the two chambers (25, 26), wherein a filling nozzle is inserted into each chamber (25, 26) for introduction of the filling product and the tube (20) is then sealed after the filling nozzles have been removed, characterized in that, prior to introduction of the filling nozzles, the separation wall (22) is surface welded throughout a large area to the inner sides of the tube wall (21) at its end regions (22a) bordering the connecting points (23, 24) in such a fashion that the length of the middle region (22b) remaining between the end regions (22a) corresponds substantially to the diameter of the tube (20).
- Method according to claim 1, characterized in that a heated shaping head (14) is introduced into the tube (20) to hold the end regions (22a) of the separation wall (22) in an aligned fashion and pressing jaws (16) are driven from the outer side of the tube (20) against the sections (14c, 14d) of the shaping head (14) holding the end regions (22a).
- Method according to claim 2, characterized in that the shaping head (14) accepts the middle region (22b) of the separation wall (22) within a groove (17) substantially without contact.
- Method according to claim 2 or 3, characterized in that the pressing jaws (16) are neither heated nor cooled.
- Apparatus for carrying out the method according to any one the claims 1 through 4, comprising a filling unit and a downstream sealing unit for sealing the filled tube, characterized in that the filling unit has an upstream shaping unit (10) comprising a heated shaping head (14) which can be introduced into the tube (20) to hold the end regions (22a) of the separation wall (22) in an aligned fashion with the assistance of seating surfaces (14c, 14d) formed on opposite sides of the shaping head (14) and also comprising pressing jaws (16) disposed at the outer side of the tube (20) which can be driven against the seating surfaces (14c, 14d) of the shaping head (14).
- Device according to claim 5, characterized in that the shaping head (14) has a groove (17) extending between the seating surfaces (14c, 14d) which subdivides the shaping head (14) into two introduction sections (14a, 14b).
- Apparatus according to claim 6, characterized in that the introduction sections (14a, 14b) each have guiding surfaces on their introductory sides facing the tube (20).
- Apparatus according to claim 7, characterized in that the guiding surfaces are tilted with respect to each other such that the introduction sections (14a, 14b) have a tapered shape.
- Apparatus according to any one of the claims 6 through 8, characterized in that the groove (17) extends diagonally with respect to the seating surfaces (14c, 14d).
- Apparatus according to any one of the claims 6 through 9, characterized in that the groove (17) has recesses (18) on each of its groove sides (17a) in the central region of its extent.
- Apparatus according to any one of the claims 5 through 10, characterized in that the pressing jaws (16) are neither heated nor cooled.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19808649 | 1998-02-28 | ||
| DE19808649A DE19808649A1 (en) | 1998-02-28 | 1998-02-28 | Method for filling a two-chamber tube and device for carrying it out |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0939033A1 EP0939033A1 (en) | 1999-09-01 |
| EP0939033B1 true EP0939033B1 (en) | 2003-04-16 |
Family
ID=7859325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98124639A Expired - Lifetime EP0939033B1 (en) | 1998-02-28 | 1998-12-23 | Filling method and apparatus for a dual chamber tube |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6185911B1 (en) |
| EP (1) | EP0939033B1 (en) |
| AT (1) | ATE237501T1 (en) |
| DE (2) | DE19808649A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999029572A1 (en) * | 1997-12-05 | 1999-06-17 | Norden Pac Development Ab | Method and device for end closure of packaging tubes |
| DE10009990A1 (en) * | 2000-03-01 | 2001-09-06 | Peter Weckerle | Method and device for filling double-walled containers |
| DE10104069A1 (en) | 2001-01-29 | 2002-08-01 | Iwk Verpackungstechnik Gmbh | tube filling machine |
| US20070084556A1 (en) | 2005-10-14 | 2007-04-19 | Langseder Neal E | Method of applying a label to a squeeze tube |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR961154A (en) * | 1950-05-06 | |||
| US1676734A (en) * | 1922-12-16 | 1928-07-10 | Gilmont Products Corp | Apparatus and method for filling collapsible tubes |
| US3390507A (en) * | 1964-08-27 | 1968-07-02 | Dow Chemical Co | Method of forming a dual compartment container |
| EP0249701B1 (en) * | 1986-04-15 | 1992-01-29 | Three Bond Co., Ltd. | Cartridge for 2-part composition |
| FR2627463B1 (en) * | 1988-02-23 | 1990-06-15 | Simon Patrick | DEFORMABLE TUBULAR CONTAINER AND ITS ONE PIECE MANUFACTURING METHOD |
| DE19522169C2 (en) * | 1995-06-19 | 1997-05-28 | Automation Industrielle Sa | Process for producing a multi-layer tubular body with at least one partition for a tube |
| US5714023A (en) * | 1996-02-23 | 1998-02-03 | Wheaton Holdings, Inc. | Method for sealing two compartment containers |
| US5775386A (en) * | 1996-06-13 | 1998-07-07 | Colgate-Palmolive Company | Apparatus and process for filling plural chamber container with flowable materials |
| US5782384A (en) * | 1996-11-05 | 1998-07-21 | Colgate-Palmolive | Aligned web in a container |
| US5927550A (en) * | 1996-12-04 | 1999-07-27 | Colgate-Palmolive Company | Dual chamber tubular container |
| SE509412C2 (en) | 1997-05-27 | 1999-01-25 | Norden Pac Dev Ab | Device and method in tube filling machine |
-
1998
- 1998-02-28 DE DE19808649A patent/DE19808649A1/en not_active Withdrawn
- 1998-12-23 EP EP98124639A patent/EP0939033B1/en not_active Expired - Lifetime
- 1998-12-23 DE DE59807958T patent/DE59807958D1/en not_active Expired - Fee Related
- 1998-12-23 AT AT98124639T patent/ATE237501T1/en not_active IP Right Cessation
- 1998-12-24 US US09/220,379 patent/US6185911B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0939033A1 (en) | 1999-09-01 |
| DE59807958D1 (en) | 2003-05-22 |
| DE19808649A1 (en) | 1999-09-02 |
| ATE237501T1 (en) | 2003-05-15 |
| US6185911B1 (en) | 2001-02-13 |
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