EP0312725B1 - Drop dispersing bottle and process for making it - Google Patents

Drop dispersing bottle and process for making it Download PDF

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Publication number
EP0312725B1
EP0312725B1 EP88113054A EP88113054A EP0312725B1 EP 0312725 B1 EP0312725 B1 EP 0312725B1 EP 88113054 A EP88113054 A EP 88113054A EP 88113054 A EP88113054 A EP 88113054A EP 0312725 B1 EP0312725 B1 EP 0312725B1
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EP
European Patent Office
Prior art keywords
bottle
dropper
section
closure part
discharge direction
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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EP88113054A
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German (de)
French (fr)
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EP0312725A3 (en
EP0312725A2 (en
Inventor
Bernd Dipl.-Ing. Hansen
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Individual
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Individual
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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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/18—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages for discharging drops; Droppers

Definitions

  • the invention relates to a dropper bottle, which has the features of the upper handle of claim 1, and a method for its production.
  • the head of the blow-molded bottle is provided with a calibrated seat, into which an injection molded dropper insert is inserted.
  • a dropper is embedded in the bottle head, which was used in a known manner (DE-OS 30 33 821) instead of a rubber stopper in the bottle head before the latter was formed.
  • a dropper bottle of the type mentioned at the outset is also known (US Pat. No. 2,097,912), the neck of which is designed as a dropper.
  • the channel bounded by the inner wall of the neck initially tapers slightly in the outflow direction, has a constant diameter in a central section and then widens towards the drip edge with a cone angle of more than 90 °.
  • the drop section that widens conically in the outflow direction and an outer conical surface that forms the drip edge together with this conical surface are responsible for the drop formation, the large cone angle of the end section counteracting the surface tension of the liquid and ensuring a uniform supply of liquid to the drip edge.
  • the invention has for its object to provide a dropper bottle that can be easily manufactured and filled sterile, easy to handle when dropping the liquid contained in it reliably keeps the drop size constant and can still be produced inexpensively.
  • the invention is also based on the object of specifying a method for producing such a dropper bottle.
  • Such a dropper bottle because it consists of a heat-sealable plastic and the dropper can be molded together with the bottle, can be as inexpensive as a bottle without a dropper be manufactured and filled sterile.
  • the shape of the channel of the dropper also ensures that the liquid is dispensed in drops of the same size in every inclined position of the dropper bottle. Handling is therefore completely unproblematic.
  • the dropper has a shape according to claim 2.
  • a closure part is advantageously formed on the dropper, since on the one hand the bottle is closed at the earliest possible time and on the other hand there is no danger that the bottle will be opened unintentionally.
  • a predetermined breaking point is preferably provided between the closure part and the bottle neck, as is known per se (US Pat. No. 4,655,355).
  • the closure part is designed according to claim 5, it can be easily broken off with the aid of a closure cap, the predetermined breaking point being able to be designed in such a way that no sharp edges arise. It is also advantageous that no additional tools have to be available to open the bottle.
  • the object of the invention is achieved by the features of claim 6.
  • Both the production of the bottle from a tube made of heat-sealable plastic and the formation of a dropper from a calibrated part of the bottle head are inexpensive work steps.
  • the bottle can be filled between the individual steps used to shape the bottle and its head, so that the method according to the invention allows a sterile container to be produced, filled, molded on and closed in a single operation without additional Parts are needed.
  • a dropper bottle serving as an ampoule for a liquid medicament has, as shown in FIG. 1, a cylindrical bottle body 1, the bottom of which is slightly curved inwards.
  • the bottle head connects centrally to the bottle body 1 with a first cylindrical section 2.
  • a second cylindrical section 3 with a larger diameter which is provided with an external thread 4.
  • a stop bar 5 running parallel to the longitudinal axis of the bottle head is provided.
  • a brake web not shown, is arranged, the length of which, however, is only equal to half the pitch of the external thread 4.
  • the second cylindrical section 3 merges into a third section 6 of the bottle head, the diameter of which is only about half as large as that of the first cylindrical section 2.
  • This third section 6 forms a truncated cone-shaped zone following a cylindrical ring zone, which is against the Free end of the bottle head tapers and forms part of a dropper designated as a whole with 7.
  • the dropper 7, which is formed in one piece with the bottle head, has, following the third section 6, a conical section 8 which widens towards the free end. Not only the outer surface, but also the inner surface of the conical section 8 have a cone angle of about 10 °.
  • the formed by the inner circumferential surface of the conical section 8, calibrated channel 8 ', where it opens into the interior 6' of the third section 6, has a diameter of 0.3 mm in the embodiment.
  • the other end, which is followed by a short inner cone 9 with a cone angle of 60 °, has a diameter of 1.5 mm in the exemplary embodiment.
  • the conical section can also have other dimensions because it is adapted to the desired drop formation in the liquid.
  • connection zone between the closure part 10 and the drop 7 is chosen to be so thin that there is a predetermined breaking point along which the closure part 10 can be separated from the dropper 7 by a rotary movement without sharp edges occurring .
  • a cap 11 which is also made of plastic, is placed on the bottle head and is provided with an internal thread which engages in the external thread 4 of the second cylindrical section 3.
  • the cap 11 tapers in connection with the cylindrical section having the internal thread against the end section comprising the closure part 10, which lies against the outer surface of the closure part 10 and is thereby connected to the closure part 10 in a rotationally fixed manner.
  • the closure part 10 is therefore separated from the dropper 7.
  • the cap can also be designed such that it normally covers the closure part 10. You can then separate the closure part 10 from the dropper 7 by reversely attaching the cap 11 to the closure part 11.
  • the cap in this case has a recess 12 in its end wall, the cross-section of which is adapted to the outer contour of the closure part 10 and overlaps the cap 11 like a ring spanner.
  • the entire bottle is made from an extruded tube made of a heat-sealable plastic.
  • the hose is first made with the help of two Lower mold halves of a device for producing, filling and closing bottles of the bottle body 1 are formed.
  • the first cylindrical section 2 and the second cylindrical section 3 of the head part obtain their final shape with the aid of one jaw each of two head mold halves.
  • the liquid is poured into the bottle body in the desired amount by means of a filling mandrel from which a calibration mandrel protrudes.
  • the mandrel is withdrawn to such an extent that the calibration mandrel lies in the interior of that section of the tube from which the dropper 7 is formed with the aid of calibration jaws which are now moved against one another and thereby form the dropper 7 together with the calibration mandrel.
  • the calibration mandrel is pulled out of the upper end of the hose, then the closure part 10 is formed by means of mold jaws in the head mold halves, thereby closing the bottle and finally fitting the cap 11.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Description

Die Erfindung betrifft eine Tropferflasche, welche die Merkmale des Oberfegriffes des Anspruches 1 aufweist, sowie ein Verfahren zu ihrer Herstellung.The invention relates to a dropper bottle, which has the features of the upper handle of claim 1, and a method for its production.

Bei einer bekannten Tropferflasche ist der Kopf der blasgeformten Flasche mit einem kalibrierten Sitz versehen, in den ein spritzgegossenes Tropfereinsatzteil eingesetzt wird. Bei einer andern bekannten, aus einem Schlauch aus heißsiegelfähigem Kunststoff hergestellten Tropferflasche ist in den Flaschenkopf ein Tropfer eingebettet, der in bekannter Weise (DE-OS 30 33 821) statt eines Gummiverschlußstopfens in den Flaschenkopf eingesetzt worden ist, ehe letzterer geformt wurde. Bei beiden Flaschen erhöht der Tropfer nicht nur die Fertigungskosten, sondern auch die Kosten für die Herstellung der Flasche erheblich. Außerdem ist es schwierig, eine völlige Sterilität der Tropferflasche zu gewährleisten.In a known dropper bottle, the head of the blow-molded bottle is provided with a calibrated seat, into which an injection molded dropper insert is inserted. In another known dropper bottle made from a hose made of heat-sealable plastic, a dropper is embedded in the bottle head, which was used in a known manner (DE-OS 30 33 821) instead of a rubber stopper in the bottle head before the latter was formed. With both bottles, the dropper not only significantly increases the manufacturing costs, but also the costs of manufacturing the bottle. In addition, it is difficult to ensure complete sterility of the dropper bottle.

Es ist ferner eine Tropferflasche der eingangs genannten Art bekannt (US-A-2 097 912), deren Hals als Tropfer ausgebildet ist. Der durch die Innenwand des Halses begrenzte Kanal verjüngt sich zunächst leicht in der Ausfließrichtung, hat in einem Mittelabschnitt einen konstanten Durchmesser und erweitert sich dann zum Tropfrand hin mit einem Konuswinkel von mehr als 90°. Für die Tropfenbildung ist hierbei der sich in der Ausfließrichtung konisch erweiternde Endabschnitt und eine zusammen mit dieser Konusfläche die Tropfkante bildende äußere konische Fläche verantwortlich, wobei der große Konuswinkel des Endabschnittes der Oberflächenspannung der Flüssigkeit entgegenwirken und eine gleichmäßige Flüssigkeitszufuhr zur Tropfkante sicherstellen soll. Damit eine Abgabe der Flüssigkeit in einzelnen Tropfen erfolgen kann, darf während des Ausgießvorganges nur ein geringer Teil der freien Querschnittsfläche des mittleren Abschnittes mit der Flüssigkeit gefüllt sein. Die Handhabung der Flasche bei der tropfenweisen Abgabe der Flüssigkeit bedarf deshalb einer hohen Sorgfalt, was in vielen Fällen störend ist oder sogar nicht hingenommen werden kann.A dropper bottle of the type mentioned at the outset is also known (US Pat. No. 2,097,912), the neck of which is designed as a dropper. The channel bounded by the inner wall of the neck initially tapers slightly in the outflow direction, has a constant diameter in a central section and then widens towards the drip edge with a cone angle of more than 90 °. The drop section that widens conically in the outflow direction and an outer conical surface that forms the drip edge together with this conical surface are responsible for the drop formation, the large cone angle of the end section counteracting the surface tension of the liquid and ensuring a uniform supply of liquid to the drip edge. So that the liquid can be dispensed in individual drops, only a small part of the free cross-sectional area of the central section may be filled with the liquid during the pouring process. The bottle must therefore be handled with care when dispensing the liquid drop by drop, which in many cases is bothersome or even unacceptable.

Der Erfindung liegt die Aufgabe zugrunde eine Tropferflasche zu schaffen, die problemlos steril hergestellt und gefüllt werden kann, bei der tropfenweisen Abgabe der in ihr enthaltenen Flüssigkeit leicht zu handhaben ist zuverlässig die Tropfengröße konstant hält und dennoch kostengünstig hergestellt werden kann. Außerdem liegt der Erfindung die Aufgabe zugrunde, ein Verfahren zur Herstellung einer solchen Tropferflasche anzugeben.The invention has for its object to provide a dropper bottle that can be easily manufactured and filled sterile, easy to handle when dropping the liquid contained in it reliably keeps the drop size constant and can still be produced inexpensively. The invention is also based on the object of specifying a method for producing such a dropper bottle.

Hinsichtlich der Tropferflasche wird diese Aufgabe durch die Merkmale des Anspruches 1 gelöst. Eine derartige Tropferflasche kann nämlich, da sie aus einem heißsiegelfähigen Kunststoff besteht und der Tropfer zusammen mit der Flasche geformt werden kann, ebenso kostengünstig wie eine Flasche ohne Tropfer vollständig steril hergestellt und gefüllt werden. Durch die Form des Kanales des Tropfers ist ferner sichergestellt, daß in jeder Neigungslage der Tropferflasche die Flüssigkeit in Tropfen gleicher Größe abgegeben wird. Die Handhabung ist deshalb völlig problemlos.With regard to the dropper bottle, this object is achieved by the features of claim 1. Such a dropper bottle, because it consists of a heat-sealable plastic and the dropper can be molded together with the bottle, can be as inexpensive as a bottle without a dropper be manufactured and filled sterile. The shape of the channel of the dropper also ensures that the liquid is dispensed in drops of the same size in every inclined position of the dropper bottle. Handling is therefore completely unproblematic.

Bei einer bevorzugten Ausführungsform hat der Tropfer eine Form gemäß Anspruch 2.In a preferred embodiment, the dropper has a shape according to claim 2.

Vorteilhafterweise ist an den Tropfer ein Verschlußteil angeformt, da dann zum einen die Flasche zum frühestmöglichen Zeitpunkt verschlossen wird und zum anderen nicht die Gefahr besteht, daß die Flasche unbeabsichtigt geöffnet wird. Um dennoch ohne Schwierigkeiten die Flasche öffnen zu können, ist vorzugsweise wie an sich bekannt (US-A-4,655,355) eine Sollbruchstelle zwischen dem Verschlußteil und dem Flaschenhals vorgesehen. Bei einer Ausbildung des Verschlußteils gemäß Anspruch 5 kann dieser mit Hilfe einer Verschlußkappe leicht abgebrochen werden, wobei die Sollbruchstelle so ausgebildet sein kann, daß keine scharfen Kanten entstehen. Vorteilhaft ist ferner, daß keine zusätzlichen Werkzeuge zur Verfügung stehen müssen, um die Flasche zu öffnen.A closure part is advantageously formed on the dropper, since on the one hand the bottle is closed at the earliest possible time and on the other hand there is no danger that the bottle will be opened unintentionally. In order to be able to open the bottle without difficulty, a predetermined breaking point is preferably provided between the closure part and the bottle neck, as is known per se (US Pat. No. 4,655,355). When the closure part is designed according to claim 5, it can be easily broken off with the aid of a closure cap, the predetermined breaking point being able to be designed in such a way that no sharp edges arise. It is also advantageous that no additional tools have to be available to open the bottle.

Hinsichtlich des Verfahrens zur Herstellung der Flasche wird die erfindungsgemäße Aufgabe durch die Merkmale des Anspruches 6 gelöst. Sowohl die Herstellung der Flasche aus einem Schlauch aus heißsiegelbarem Kunststoff als auch die Formung eines Tropfers aus einem kalibrierten Teil des Flaschenkopfes sind kostengünstige Arbeitsschritte. Außerdem kann zwischen den einzelnen, der Formung der Flasche und ihres Kopfes dienenden Arbeitsschritten die Flasche gefüllt werden, so daß es das erfindungsgemäße Verfahren erlaubt, in einem einzigen Arbeitsgang einen sterilen Behälter herzustellen, zu Füllen, den Tropfer anzuformen und zu verschließen, ohne daß zusätzliche Teile benötigt werden.With regard to the method for producing the bottle, the object of the invention is achieved by the features of claim 6. Both the production of the bottle from a tube made of heat-sealable plastic and the formation of a dropper from a calibrated part of the bottle head are inexpensive work steps. In addition, the bottle can be filled between the individual steps used to shape the bottle and its head, so that the method according to the invention allows a sterile container to be produced, filled, molded on and closed in a single operation without additional Parts are needed.

Vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens sind Gegenstand der Ansprüche 7 bis 10.Advantageous embodiments of the method according to the invention are the subject of claims 7 to 10.

Im folgenden ist die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels im einzelnen erläutert. Es zeigen

  • Fig. 1 eine Ansicht des Ausführungsbeispiels im verkaufsfertigen Zustand,
  • Fig. 2 eine vergrößert und teils im Schnitt dargestellte Ansicht des Flaschenkopfes des Ausführungsbeispiels mit je einer Hälfte von zwei unterschiedlich ausgebildeten Verschlußkappen.
The invention is explained in detail below using an exemplary embodiment shown in the drawing. Show it
  • 1 is a view of the embodiment in the state ready for sale,
  • Fig. 2 is an enlarged and partially sectioned view of the bottle head of the embodiment, each with one half of two differently designed caps.

Eine als Ampulle für ein flüssiges Medikament dienende Tropferflasche weist, wie Fig. 1 zeigt, einen zylindrischen Flaschenkörper 1 auf, dessen Boden leicht nach innen gewölbt ist. Der Flaschenkopf schließt sich zentrisch an den Flaschenkörper 1 mit einem ersten zylindrischen Abschnitt 2 an.A dropper bottle serving as an ampoule for a liquid medicament has, as shown in FIG. 1, a cylindrical bottle body 1, the bottom of which is slightly curved inwards. The bottle head connects centrally to the bottle body 1 with a first cylindrical section 2.

Auf diesen folgt ein im Durchmesser größerer, zweiter zylindrischer Abschnitt 3, der mit einem Außengewinde 4 versehen ist. Zwischen zwei aufeinander folgenden Gängen dieses Außengewindes 4 ist ein parallel zur Längsachse des Flaschenkopfes verlaufender Stopp-Steg 5 vorgesehen. Gegenüber diesem, um 180° versetzt, ist ein nicht dargestellter Brems-Steg angeordnet, dessen Länge jedoch nur gleich der halben Ganghöhe des Außengewindes 4 ist.This is followed by a second cylindrical section 3 with a larger diameter, which is provided with an external thread 4. Between two successive gears of this external thread 4, a stop bar 5 running parallel to the longitudinal axis of the bottle head is provided. Opposite this, offset by 180 °, a brake web, not shown, is arranged, the length of which, however, is only equal to half the pitch of the external thread 4.

Der zweite zylindrische Abschnitt 3 geht in einen dritten Abschnitt 6 des Flaschenkopfes über, dessen Durchmesser nur etwa halb so groß ist wie derjenige des ersten zylindrischen Abschnittes 2. Dieser dritte Abschnitt 6 bildet im Anschluß an eine zylindrische Ringzone eine kegelstumpfförmige Zone, die sich gegen das freie Ende des Flaschenkopfes hin verjüngt und einen Teil eines als Ganzes mit 7 bezeichneten Tropfers bildet. Der einstückig mit dem Flaschenkopf ausgebildete Tropfer 7 weist im Anschluß an den dritten Abschnitt 6 einen sich zum freien Ende hin erweiternden konischen Abschnitt 8 auf. Nicht nur die Außenmantelfläche, sondern auch die Innenmantelfläche des konischen Abschnittes 8 haben einen Konuswinkel von etwa 10°. Der von der Innenmantelfläche des konischen Abschnittes 8 gebildete, kalibrierte Kanal 8′ hat dort, wo er in den Innenraum 6′ des dritten Abschnittes 6 mündet, im Ausführungsbeispiel einen Durchmesser von 0,3 mm. Das andere Ende, an das sich ein kurzer Innenkonus 9 mit einem Konuswinkel von 60° anschließt, hat im Ausführungsbeispiel einen Durchmesser von 1,5 mm. Der konische Abschnitt kann jedoch auch andere Abmessungen aufweisen, weil man ihn an die gewünschte Tropfenbildung der Flüssigkeit anpaßt. Ferner kann man zwischen dem kalibrierten Kanal 8′ und dem Innenraum 6′ einen zylindrischen Kanalabschnitt vorsehen, der vorzugsweise kalibriert ist.The second cylindrical section 3 merges into a third section 6 of the bottle head, the diameter of which is only about half as large as that of the first cylindrical section 2. This third section 6 forms a truncated cone-shaped zone following a cylindrical ring zone, which is against the Free end of the bottle head tapers and forms part of a dropper designated as a whole with 7. The dropper 7, which is formed in one piece with the bottle head, has, following the third section 6, a conical section 8 which widens towards the free end. Not only the outer surface, but also the inner surface of the conical section 8 have a cone angle of about 10 °. The formed by the inner circumferential surface of the conical section 8, calibrated channel 8 ', where it opens into the interior 6' of the third section 6, has a diameter of 0.3 mm in the embodiment. The other end, which is followed by a short inner cone 9 with a cone angle of 60 °, has a diameter of 1.5 mm in the exemplary embodiment. However, the conical section can also have other dimensions because it is adapted to the desired drop formation in the liquid. Furthermore, you can provide a cylindrical channel section between the calibrated channel 8 'and the interior 6', which is preferably calibrated.

An das dem dritten Abschnitt 6 abgekehrte Ende des Tropfers 7 ist einstückig ein annähernd würfelförmiger Verschlußteil 10 angeformt, welcher das vom Flaschenkörper 1 wegweisende Ende des Tropfers 7 geringfügig übergreift und den Tropfer 7 und damit die gesamte Flasche dicht verschließt. Im Bereich des Übergriffes über den Tropfer 7 ist die Verbindungszone zwischen dem Verschlußteil 10 und dem Tropfen 7 so dünn gewählt, daß hier eine Sollbruchstelle vorhanden ist, längs deren der Verschlußteil 10 vom Tropfer 7 durch eine Drehbewegung abgetrennt werden kann, ohne daß scharfe Kanten entstehen.At the end of the dropper 7 facing away from the third section 6 is an approximately cube-shaped closure part 10 integrally formed, which slightly overlaps the end of the dropper 7 pointing away from the bottle body 1 and tightly closes the dropper 7 and thus the entire bottle. In the area of the overlap over the dropper 7, the connection zone between the closure part 10 and the drop 7 is chosen to be so thin that there is a predetermined breaking point along which the closure part 10 can be separated from the dropper 7 by a rotary movement without sharp edges occurring .

Im verkaufsfertigen Zustand ist auf den Flaschenkopf eine ebenfalls aus Kunststoff bestehende Kappe 11 aufgesetzt, die mit einem Innengewinde versehen ist, welches in das Außengewinde 4 des zweiten zylindrischen Abschnittes 3 eingreift. Wie in Fig. 2 rechts dargestellt, verjüngt sich die Kappe 11 im Anschluß an den das Innengewinde aufweisenden, zylindrischen Abschnitt gegen den den Verschlußteil 10 umfaßenden Endabschnitt hin, der an der Außenmantelfläche des Verschlußteiles 10 anliegt und dadurch drehfest mit dem Verschlußteil 10 verbunden ist. Bei einem Drehen der Kappe 11 im Sinne des Abnehmens vom Flaschenkopf wird deshalb der Verschlußteil 10 vom Tropfer 7 getrennt. Man kann aber auch, wie in Fig. 2 links dargestellt, die Kappe so ausbilden, daß sie normalerweise den Verschlußteil 10 überdeckt. Man kann dann den Verschlußteil 10 dadurch vom Tropfer 7 trennen, daß man die Kappe 11 umgekehrt auf den Verschlußteil 11 aufsteckt. Zu diesem Zwecke hat die Kappe in diesem Falle in ihrer Stirnwand eine Vertiefung 12, die in ihrem Querschnitt an die Außenkontur des Verschlußteiles 10 angepaßt ist und wie ein Ringschlüssel die Kappe 11 übergreift.In the ready-to-sell state, a cap 11, which is also made of plastic, is placed on the bottle head and is provided with an internal thread which engages in the external thread 4 of the second cylindrical section 3. As shown on the right in FIG. 2, the cap 11 tapers in connection with the cylindrical section having the internal thread against the end section comprising the closure part 10, which lies against the outer surface of the closure part 10 and is thereby connected to the closure part 10 in a rotationally fixed manner. When the cap 11 is rotated in the sense of being removed from the bottle head, the closure part 10 is therefore separated from the dropper 7. However, as shown on the left in FIG. 2, the cap can also be designed such that it normally covers the closure part 10. You can then separate the closure part 10 from the dropper 7 by reversely attaching the cap 11 to the closure part 11. For this purpose, the cap in this case has a recess 12 in its end wall, the cross-section of which is adapted to the outer contour of the closure part 10 and overlaps the cap 11 like a ring spanner.

Die gesamte Flasche wird aus einem extrudierten Schlauch hergestellt, der aus einem heißsiegelbaren Kunststoff besteht. Aus dem Schlauch wird zunächst mit Hilfe von zwei Unterformhälften einer Vorrichtung zum Herstellen, Füllen und Verschließen von Flaschen der Flaschenkörper 1 geformt. Gleichzeitig erhalten der erste zylindrische Abschnitt 2 und der zweite zylindrische Abschnitt 3 des Kopfteils ihre endgültige Form mit Hilfe je eines Backens zweier Kopfformhälften. Im Anschluß hieran wird mittels eines Fülldornes, aus dem ein Kalibrierdorn herausragt, die Flüssigkeit in den Flaschenkörper in der gewünschten Menge eingefüllt. Nunmehr wird der Fülldorn soweit zurückgezogen, daß der Kalibrierdorn im Inneren desjenigen Abschnittes des Schlauches liegt, aus dem der Tropfer 7 mit Hilfe von Kalibrierbacken geformt wird, die nun gegeneinander bewegt werden und dabei zusammen mit dem Kalibrierdorn den Tropfer 7 formen. Als letztes werden der Kalibrierdorn aus dem oberen Schlauchende herausgezogen, danach mittels Formbacken der Kopfformhälften der Verschlußteil 10 geformt und damit die Flasche verschlossen und zum Schluß die Kappe 11 aufgesetzt.The entire bottle is made from an extruded tube made of a heat-sealable plastic. The hose is first made with the help of two Lower mold halves of a device for producing, filling and closing bottles of the bottle body 1 are formed. At the same time, the first cylindrical section 2 and the second cylindrical section 3 of the head part obtain their final shape with the aid of one jaw each of two head mold halves. Subsequently, the liquid is poured into the bottle body in the desired amount by means of a filling mandrel from which a calibration mandrel protrudes. Now the mandrel is withdrawn to such an extent that the calibration mandrel lies in the interior of that section of the tube from which the dropper 7 is formed with the aid of calibration jaws which are now moved against one another and thereby form the dropper 7 together with the calibration mandrel. Finally, the calibration mandrel is pulled out of the upper end of the hose, then the closure part 10 is formed by means of mold jaws in the head mold halves, thereby closing the bottle and finally fitting the cap 11.

Claims (10)

1. Dropper bottle, whereof the dropper (7) is constructed in one piece with the bottle top and comprises a passage (6′, 8′) tapering first of all in the discharge direction and then widening out conically, characterised in that
a) it consists of heat-sealable synthetic material,
b) the cone angle of the section (8) widening out in the discharge direction is substantially less than the angle of inclination of the section (6) narrowing-down in the discharge direction, with respect to the axis of the passage, the narrowed-down point of the passage (6′, 8′) located between the section (6) narrowing-down in the discharge direction and the section (8) widening-out in the discharge direction being dimensioned so that it co-determines the drop size.
2. Dropper bottle according to Claim 1, characterised in that the section (6′) of the passage (6′, 8′) narrowing-down in the discharge direction is provided in a frustoconical section (6) of the dropper (7).
3. Dropper bottle according to Claim 2, characterised in that a hollow, preferably cube-shaped closure part (10) adjoins the end of the conical section (8) of larger diameter.
4. Dropper bottle according to Claim 3, characterised in that provided between the dropper (7) and the closure part (10) is a peripheral predetermined breaking point.
5. Dropper bottle according to Claim 3 or 4, characterised in that the closure part (10) has a peripheral contour varying from a circular shape and a closure cap (11) is provided with an inner contour producing a non-rotary connection to the closure part (10).
6. Method for the production of a bottle according to Claim 1, in which a tube of a heat-sealable synthetic material is placed in a mould corresponding to the bottle and the bottle top is calibrated internally at least on part of its length, characterised in that an internally calibrated part of the bottle top is made into a gropper.
7. Method according to Claim 6, characterised in that the dropper is formed integrally on the end of a section of the bottle top remote from the bottle body, which bottle top is provided on its outer surface with a thread for the engagement of a corresponding thread of a closure cap.
8. Method according to Claim 6 or 7, characterised in that formed integrally on the end of the dropper remote from the bottle body is a closure part constructed in one piece therewith.
9. Method according to Claim 8, characterised in that the transition from the dropper to the closure part is provided with an annular zone of slight wall thickness as a predetermined breaking point.
10. Method according to one of Claims 6 to 9, characterised in that after the formation of the bottle body, the bottle is filled and then the dropper is finished and the closure part is formed integrally thereon.
EP88113054A 1987-10-23 1988-08-11 Drop dispersing bottle and process for making it Expired - Lifetime EP0312725B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873735909 DE3735909A1 (en) 1987-10-23 1987-10-23 DRIP BOTTLE AND METHOD FOR THEIR PRODUCTION
DE3735909 1987-10-23

Publications (3)

Publication Number Publication Date
EP0312725A2 EP0312725A2 (en) 1989-04-26
EP0312725A3 EP0312725A3 (en) 1990-03-21
EP0312725B1 true EP0312725B1 (en) 1991-05-08

Family

ID=6338937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88113054A Expired - Lifetime EP0312725B1 (en) 1987-10-23 1988-08-11 Drop dispersing bottle and process for making it

Country Status (8)

Country Link
US (1) US5076474A (en)
EP (1) EP0312725B1 (en)
JP (1) JPH01146552A (en)
CA (1) CA1333063C (en)
DE (1) DE3735909A1 (en)
ES (1) ES2022554B3 (en)
IN (1) IN170233B (en)
MX (1) MX172829B (en)

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Also Published As

Publication number Publication date
MX172829B (en) 1994-01-17
DE3735909A1 (en) 1989-05-03
CA1333063C (en) 1994-11-15
EP0312725A3 (en) 1990-03-21
DE3735909C2 (en) 1991-09-05
ES2022554B3 (en) 1991-12-01
US5076474A (en) 1991-12-31
EP0312725A2 (en) 1989-04-26
IN170233B (en) 1992-02-29
JPH01146552A (en) 1989-06-08
JPH045462B2 (en) 1992-01-31

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