EP1227987A1 - Container comprising an inner pouch - Google Patents

Container comprising an inner pouch

Info

Publication number
EP1227987A1
EP1227987A1 EP00945598A EP00945598A EP1227987A1 EP 1227987 A1 EP1227987 A1 EP 1227987A1 EP 00945598 A EP00945598 A EP 00945598A EP 00945598 A EP00945598 A EP 00945598A EP 1227987 A1 EP1227987 A1 EP 1227987A1
Authority
EP
European Patent Office
Prior art keywords
inner bag
wall
container
expandable material
container according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00945598A
Other languages
German (de)
French (fr)
Other versions
EP1227987B1 (en
Inventor
Roland Kneer
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.)
Gaplast GmbH
Original Assignee
Gaplast GmbH
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 Gaplast GmbH filed Critical Gaplast GmbH
Priority to SI200030371T priority Critical patent/SI1227987T1/en
Publication of EP1227987A1 publication Critical patent/EP1227987A1/en
Application granted granted Critical
Publication of EP1227987B1 publication Critical patent/EP1227987B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings
    • B65D25/16—Loose, or loosely-attached, linings
    • 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
    • B65D23/00—Details of bottles or jars not otherwise provided for
    • B65D23/02—Linings or internal coatings

Definitions

  • the invention relates to a container with an essentially dimensionally stable outer wall and an easily deformable inner bag, into which, for example, a pharmaceutical liquid is filled, which can be dispensed with a pump placed on the neck of the container.
  • the container contents can also be a cream or a paste that is released from the container opening by compressing the outer wall.
  • the container may be in the form of a bottle or, for example, a tube or a tube, with no limitation as to its shape.
  • Containers are known from an essentially dimensionally stable outer wall and an easily deformable inner bag, which are produced, for example, by the coextrusion blow molding process and consist of two plastic layers that do not form a connection with one another, i.e. the inner bag, which initially contacts the dimensionally stable outer wall of the container has been inflated, detaches from this outer wall when the contents of the container are gradually released. So that the inner bag can contract in accordance with the volume dispensed, a pressure equalization between the outer wall of the container and the contracting inner bag must take place. For this purpose, pressure equalization holes are formed in the previously known containers of the type under consideration, through which air can enter the space between the outer wall and the inner bag.
  • the suppression in the inner bag in turn means that air can enter the inner bag, either through fine openings in the wall of the inner bag or, for example, due to a leak in the area of a pump that may be present.
  • the present invention has for its object to develop a container of the type under consideration so that the pressure equalization between the contracting inner bag when dispensing the container and the substantially dimensionally stable outer wall takes place in a more favorable manner. This object is achieved by the features of claim 1.
  • the invention provides that an expandable material is arranged between the outer wall of the container and the inner bag, which fills the resulting space between the outer wall and the inner bag when filling material is dispensed from the inner bag.
  • this expandable material is located essentially along the entire space between the inner bag and the outer wall, but it is also within the scope of the invention that the expandable material can only be arranged in regions.
  • the outer wall and the inner bag can be firmly connected to one another at individual points, which is preferably the case in the bottom region of the container, so that the inner bag does not contract in the axial direction, but in the radial direction, which is advantageous for a complete dispensing of the container contents ,
  • the outer wall and inner bag are expediently also in the area of the container opening, e.g. firmly connected to one another at a container neck, so that an outwardly sealed interior is created between the outer wall and the inner bag.
  • the expandable material at least partially change into a foam-like state when exposed to an agent.
  • This foam fills the space between the inner bag and the outer wall resulting from the dispensing of the container contents and the concomitant contraction of the inner bag supports the inner bag, so that practically no negative pressure can arise in it, which could cause air to enter the inner bag.
  • the expandable material gradually changes into an unfoamed, purely gaseous state when exposed to a suitable agent and thus fills the space between the outer wall and the inner bag. In this case, this space must be hermetically sealed from the outside.
  • the agent which allows the pressure compensation material to expand is a substance which comes into contact with the expandable material.
  • This substance can be water or water vapor, which causes a pressure compensation layer to foam or expand if it preferably contains citric acid and sodium bicarbonate.
  • the inner bag consists of a material that is permeable to water vapor to a predetermined extent. For example, very fine pores can be provided for this purpose, which are permeable to water vapor but not to the other components of the container contents.
  • the means for triggering the expansion of the pressure compensation layer can also act on the container from the outside or can be introduced into the intermediate space through the outer wall.
  • UV rays are incident on the expandable material through the outer wall. This UV irradiation can take place, for example, after the container has been filled at an irradiation station provided for this purpose and lead to expansion in the intermediate space, and a negative pressure is created there by the contracting bag.
  • the container according to the invention can be produced from three layers - a layer for the inner bag, an intermediate layer made of expandable material and a layer for the outer wall - using the coextrusion blow molding process.
  • the outer wall and the inner bag can also be produced separately, wherein the expandable material can be applied as a layer on the inner bag or on the inside of the outer container.
  • the outer container It is also not necessary for the outer container to be made of plastic.
  • a metal sheet for example, can also be used as the material for the outer container.
  • Figure 1 is a vertical section through a container according to the invention.
  • FIG. 2 shows a bottom view of the container according to FIG. 1;
  • Fig. 3 is a side view of the container
  • Fig. 4 is a plan view of the container.
  • the container shown in the figures is produced in a coextrusion blow molding process from a three-layer tubular blank.
  • the outer layer 1 consists of a relatively hard plastic so that this outer wall of the container remains essentially dimensionally stable, even if the container contents are dispensed.
  • the intermediate layer 2 has a mixture of citric acid and sodium bicarbonate, while the inner bag 3 consists of a flexible plastic material.
  • the mold cavity of the blow mold is designed such that when the blow mold is closed, a cross-sectionally substantially diamond-shaped pinch seam 4 is formed, in which the inner bag is clamped, although FIG. 1 does not show this so clearly. Squeezing the inner bag ensures that it cannot contract in the axial direction.
  • two ventilation beads 6 are formed in the outer wall 1. These beads prevent air from becoming trapped when installing a pump base. They are not connected to the space between the outer wall and the inner bag.
  • the container is designed to hold a substance that contains water.
  • the inner bag is permeable to a predetermined degree for water vapor, which initiates the expansion of the layer 2 after it has passed through the wall of the inner bag.
  • a material foam is increasingly formed between the wall 1 and the inner bag 3, which fills the space between these two layers when the filling substance is released and thereby supports the inner bag 3 in such a way that no negative pressure can form therein.

Abstract

A container comprises a substantially dimensionally stable outer wall and an easily deformable inner pouch which gradually contracts upon discharge of the contents of the container. As a result, pressure compensation is provided in the increasing space between the outer wall and the inner pouch. The outer wall and the inner pouch have, therebetween, a layer of a pressure compensating material that expands when acted upon by an agent. The expanding layer comprises, in an exemplary embodiment, citric acid and sodium bicarbonate foam acting against the inner pouch. The foamed pressure-compensating layer supports the inner pouch so that no vacuum is generated in the pouch.

Description

Behälter mit Innenbeutel Container with inner bag
Die Erfindung betrifft einen Behälter mit einer im wesentlichen formstabilen Außenwand und einem leicht verformbaren Innenbeutel, in den beispielsweise eine pharmazeutische Flüssigkeit eingefüllt wird, die mit einer auf den Hals des Behälters aufgesetzten Pumpe abgegeben werden kann. Der Behälterinhalt kann aber auch eine Creme oder eine Paste sein, die durch Zusammendrücken der Außenwand aus der Behälteröffnung abgegeben wird.The invention relates to a container with an essentially dimensionally stable outer wall and an easily deformable inner bag, into which, for example, a pharmaceutical liquid is filled, which can be dispensed with a pump placed on the neck of the container. The container contents can also be a cream or a paste that is released from the container opening by compressing the outer wall.
Der Behälter kann die Form einer Flasche oder beispielsweise eines Röhrchens oder einer Tube haben, wobei es keinerlei Beschränkung hinsichtlich seiner Form gibt.The container may be in the form of a bottle or, for example, a tube or a tube, with no limitation as to its shape.
Es sind Behälter aus einer im wesentlichen formstabilen Außenwand und einem leicht verformbaren Innenbeutel bekannt, die beispielsweise im Coextrusions-Blasverfahren hergestellt werden und aus zwei Kunststoffschichten bestehen, die keine Verbindung miteinander eingehen, d.h. der Innenbeutel, der zunächst in Anlage an der formstabilen Außenwand des Behälters aufgeblasen wurde, löst sich von dieser Außenwand ab, wenn nach und nach der Behälterinhalt abgegeben wird. Damit sich der Innenbeutel entsprechend dem abgegebenen Volumen zusammenziehen kann, muß ein Druckausgleich zwischen der Außenwand des Behälters und dem sich zusammenziehenden Innenbeutel stattfinden. Hierzu sind bei den bisher bekannten Behältern der betrachteten Art in der Außenwand Druckausgleichslöcher ausgebildet, durch die Luft in den Zwischenraum zwischen der Außenwand und dem Innenbeutel eintreten kann.Containers are known from an essentially dimensionally stable outer wall and an easily deformable inner bag, which are produced, for example, by the coextrusion blow molding process and consist of two plastic layers that do not form a connection with one another, i.e. the inner bag, which initially contacts the dimensionally stable outer wall of the container has been inflated, detaches from this outer wall when the contents of the container are gradually released. So that the inner bag can contract in accordance with the volume dispensed, a pressure equalization between the outer wall of the container and the contracting inner bag must take place. For this purpose, pressure equalization holes are formed in the previously known containers of the type under consideration, through which air can enter the space between the outer wall and the inner bag.
Auch wenn ein Druckausgleich durch die Löcher in der Außenwand erfolgt, entsteht dennoch im Innenbeutel häufig ein Unterdruck, da nicht immer ein vollständiger Druckausgleich entlang des gesamten Außenumfangs des Innenbeutels erfolgt und durch das Zusammenziehen des Innenbeutels Rückstellkräfte entstehen, die zur Folge haben, daß der Innenbeutel versucht, in gewissem Umfang in seine natürliche Form zurückzukehren.Even if there is pressure equalization through the holes in the outer wall, a negative pressure often arises in the inner bag, since there is not always complete pressure equalization along the entire outer circumference of the inner bag and, due to the contraction of the inner bag, restoring forces arise which have the consequence that the inner bag tries to return to its natural form to some extent.
Der Unterdr ck in dem Innenbeutel hat wiederum zur Folge, daß Luft in den Innenbeutel eintreten kann, entweder durch feine Öffnungen in der Wand des Innenbeutels oder beispielsweise durch eine Undichtigkeit im Bereich einer eventuell vorhandenen Pumpe.The suppression in the inner bag in turn means that air can enter the inner bag, either through fine openings in the wall of the inner bag or, for example, due to a leak in the area of a pump that may be present.
Der Eintritt von Luft in den Innenbeutel ist sehr unerwünscht, da hierdurch die Qualität des Behälterinhalts verschlechtert werden kann und weil der Flüssigkeitsspiegel in dem Innenbeutel so weit sinken kann, daß ein Teil des Behälterinhalts nicht mehr ausgebracht werden kann, beispielsweise weil der Flüssigkeitsspiegel unter die Einlaßöffnung des Saugrohrs einer Pumpe sinkt.The entry of air into the inner bag is very undesirable, since this can impair the quality of the container content and because the liquid level in the inner bag can drop so much that part of the container content can no longer be discharged, for example because the liquid level is below the inlet opening of the suction pipe of a pump sinks.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Behälter der betrachteten Art so weiter zu entwickeln, daß der Druckausgleich zwischen dem sich bei Abgabe von Behälterinhalt zusammenziehenden Innenbeutel und der im wesentlichen formstabilen Außenwand auf eine günstigere Weise erfolgt. Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst.The present invention has for its object to develop a container of the type under consideration so that the pressure equalization between the contracting inner bag when dispensing the container and the substantially dimensionally stable outer wall takes place in a more favorable manner. This object is achieved by the features of claim 1.
Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous embodiments of the invention are characterized in the subclaims.
Die Erfindung sieht vor, daß zwischen der Außenwand des Behälters und dem Innenbeutel ein expandierbares Material angeordnet ist, das bei Abgabe von Füllgut aus dem Innenbeutel den hierdurch sich vergrößernden Zwischenraum zwischen der Außenwand und dem Innenbeutel ausfüllt.The invention provides that an expandable material is arranged between the outer wall of the container and the inner bag, which fills the resulting space between the outer wall and the inner bag when filling material is dispensed from the inner bag.
Dabei ist es bevorzugt, daß sich dieses expandierbare Material im wesentlichen entlang des gesamten Zwischenraums zwischen dem Innenbeutel und der Außenwand befindet, wobei es aber auch im Rahmen der Erfindung liegt, daß das expandierbare Material nur bereichsweise angeordnet sein kann.It is preferred that this expandable material is located essentially along the entire space between the inner bag and the outer wall, but it is also within the scope of the invention that the expandable material can only be arranged in regions.
Die Außenwand und der Innenbeutel können an einzelnen Stellen fest miteinander verbunden sein, was vorzugsweise im Bodenbereich des Behälters der Fall ist, so daß sich der Innenbeutel in axialer Richtung nicht zusammenzieht, wohl aber in radialer Richtung, was für ein vollständiges Ausbringen des Behälterinhalts vorteilhaft ist. Außenwand und Innenbeutel sind zweckmäßigerweise auch im Bereich der Behälteröffnung, also z.B. an einem Behälterhals fest miteinander verbunden, so daß zwischen der Außenwand und dem Innenbeutel ein nach außen dichter Innenraum entsteht.The outer wall and the inner bag can be firmly connected to one another at individual points, which is preferably the case in the bottom region of the container, so that the inner bag does not contract in the axial direction, but in the radial direction, which is advantageous for a complete dispensing of the container contents , The outer wall and inner bag are expediently also in the area of the container opening, e.g. firmly connected to one another at a container neck, so that an outwardly sealed interior is created between the outer wall and the inner bag.
In weiterer Ausgestaltung der Erfindung wird vorgeschlagen, daß das expandierbare Material bei Einwirkung eines Mittels wenigstens teilweise in einen schaumförmigen Zustand übergeht. Dieser Schaum füllt den durch Abgabe von Behälterinhalt und dem damit einhergehenden Zusammenziehen des Innenbeutels entstehende Zwischenraum zwischen dem Innenbeutel und der Außenwand aus und stützt dabei den Innenbeutel ab, so daß in diesem praktisch kein Unterdruck mehr entstehen kann, der den Eintritt von Luft in den Innenbeutel verursachen könnte.In a further embodiment of the invention it is proposed that the expandable material at least partially change into a foam-like state when exposed to an agent. This foam fills the space between the inner bag and the outer wall resulting from the dispensing of the container contents and the concomitant contraction of the inner bag supports the inner bag, so that practically no negative pressure can arise in it, which could cause air to enter the inner bag.
Grundsätzlich kommt es auch in Betracht, daß das expandierbare Material bei Einwirkung eines geeigneten Mittels nach und nach teilweise in einen ungeschäumten, rein gasförmigen Zustand übergeht und somit den Zwischenraum zwischen Außenwand und Innenbeutel ausfüllt. In diesem Fall muß dieser Zwischenraum nach außen hermetisch abgeschlossen sein.Basically, it is also contemplated that the expandable material gradually changes into an unfoamed, purely gaseous state when exposed to a suitable agent and thus fills the space between the outer wall and the inner bag. In this case, this space must be hermetically sealed from the outside.
In weiterer Ausgestaltung der Erfindung kann vorgesehen sein, daß das Mittel, das das Druckausgleichmaterial expandieren läßt, ein Stoff ist, der mit dem expandierbaren Material in Kontakt gerät.In a further embodiment of the invention, it can be provided that the agent which allows the pressure compensation material to expand is a substance which comes into contact with the expandable material.
Dieser Stoff kann Wasser oder Wasserdampf sein, der eine Druckausgleichschicht aufschäumen oder expandieren läßt, wenn diese bevorzugt Zitronensäure und Natrium-Bikarbonat aufweist. Hierbei handelt es sich um eine vorteilhafte Ausgestaltung der Erfindung, wobei ausdrücklich darauf hingewiesen wird, daß diese nicht auf das angegebene expandierbare Material und den das Aufschäumen hervorrufende Stoff Wasser oder Wasserdampf beschränkt ist.This substance can be water or water vapor, which causes a pressure compensation layer to foam or expand if it preferably contains citric acid and sodium bicarbonate. This is an advantageous embodiment of the invention, it being expressly pointed out that this is not limited to the specified expandable material and the substance causing the foaming, water or water vapor.
Wenn Wasserdampf als Mittel zum Expandieren der Zwischenschicht zwischen Außenwand und Innenbeutel herangezogen wird, tritt dieser nach einem weiteren Vorschlag der Erfindung vorzugsweise durch den Innenbeutel hindurch. Hierzu ist vorgesehen, daß der Innenbeutel aus einem Material besteht, das in einem vorbestimmten Maße durchlässig für Wasserdampf ist. Beispielsweise können hierzu ganz feine Poren vorgesehen sein, die zwar für Wasserdampf, nicht jedoch für die übrigen Bestandteile des Behälterinhalts durchlässig sind. Das Mittel zum Auslösen der Expansion der Druckausgleichschicht kann auch von außen auf den Behälter einwirken oder durch die Außenwand in den Zwischenraum eingebracht werden. Als ein Beispiel wird angeführt, daß UV-Strahlen durch die Außenwand hindurch auf das expandierbare Material treffen. Diese UV-Bestrahlung kann beispielsweise nach Abfüllung des Behälters an einer hierzu vorgesehenen Bestrahlungsstation erfolgen und zu einer Expansion im Zwischenraum führen, sowie dort durch den sich zusammenziehenden Beutel ein Unterdruck entsteht.If water vapor is used as a means of expanding the intermediate layer between the outer wall and the inner bag, it preferably passes through the inner bag according to a further proposal of the invention. For this purpose, it is provided that the inner bag consists of a material that is permeable to water vapor to a predetermined extent. For example, very fine pores can be provided for this purpose, which are permeable to water vapor but not to the other components of the container contents. The means for triggering the expansion of the pressure compensation layer can also act on the container from the outside or can be introduced into the intermediate space through the outer wall. As an example, UV rays are incident on the expandable material through the outer wall. This UV irradiation can take place, for example, after the container has been filled at an irradiation station provided for this purpose and lead to expansion in the intermediate space, and a negative pressure is created there by the contracting bag.
Hinsichtlich der Herstellungsweise des erfindungsgemäßen Behälters gibt es keine Beschränkungen. Er kann beispielsweise aus drei Schichten -einer Schicht für den Innenbeutel, einer Zwischenschicht aus expandierbarem Material und einer Schicht für die Außenwand- im Koextrusions-Blasverfahren hergestellt werden. Die Außenwand und der Innenbeutel können auch getrennt hergestellt werden, wobei das expandierbare Material als Schicht auf den Innenbeutel oder innen auf den Außenbehälter aufgebracht werden kann. Es ist auch nicht erforderlich, daß der Außenbehälter aus Kunststoff besteht. Als Material für den Außenbehälter kann beispielsweise auch ein Metallblech verwendet werden.There are no restrictions with regard to the method of manufacturing the container according to the invention. For example, it can be produced from three layers - a layer for the inner bag, an intermediate layer made of expandable material and a layer for the outer wall - using the coextrusion blow molding process. The outer wall and the inner bag can also be produced separately, wherein the expandable material can be applied as a layer on the inner bag or on the inside of the outer container. It is also not necessary for the outer container to be made of plastic. A metal sheet, for example, can also be used as the material for the outer container.
Die Erfindung wird nachfolgend anhand einer Ausführungsform mit Bezug auf die Zeichnung näher beschrieben. Dabei zeigen:The invention is described below using an embodiment with reference to the drawing. Show:
Fig. 1 einen Vertikalschnitt durch einen erfindungsgemäßen Behälter;Figure 1 is a vertical section through a container according to the invention.
Fig. 2 eine Unteransicht des Behälters gemäß Fig. 1 ;FIG. 2 shows a bottom view of the container according to FIG. 1;
Fig. 3 eine Seitenansicht des Behälters undFig. 3 is a side view of the container and
Fig. 4 eine Aufsicht auf den Behälter. Der in den Figuren dargestellte Behälter ist im Coextrusions- Blasverfahren aus einem dreischichtigen schlauchförmigen Rohling hergestellt. Die äußere Schicht 1 besteht aus einem verhältnismäßig harten Kunststoff, damit diese Außenwand des Behälters im wesentlichen formstabil bleibt, auch wenn der Behälterinhalt abgegeben wird. Die Zwischenschicht 2 weist ein Gemisch aus Zitronensäure und Natrium-Bikarbonat auf, während der Innenbeutel 3 aus einem weichelastischen Kunststoffmaterial besteht.Fig. 4 is a plan view of the container. The container shown in the figures is produced in a coextrusion blow molding process from a three-layer tubular blank. The outer layer 1 consists of a relatively hard plastic so that this outer wall of the container remains essentially dimensionally stable, even if the container contents are dispensed. The intermediate layer 2 has a mixture of citric acid and sodium bicarbonate, while the inner bag 3 consists of a flexible plastic material.
Am Boden ist das Formnest der Blasform so ausgebildet, daß beim Schließen der Blasform eine querschnittlich im wesentlichen rautenförmige Quetschnaht 4 entsteht, in der der Innenbeutel eingeklemmt ist, obwohl Fig. 1 dies nicht so deutlich zeigt. Durch das Einquetschen des Innenbeutels wird erreicht, daß dieser sich in axialer Richtung sich nicht zusammenziehen kann.At the bottom, the mold cavity of the blow mold is designed such that when the blow mold is closed, a cross-sectionally substantially diamond-shaped pinch seam 4 is formed, in which the inner bag is clamped, although FIG. 1 does not show this so clearly. Squeezing the inner bag ensures that it cannot contract in the axial direction.
Im Bereich der Öffnung 5 des Behälters sind zwei Entlüftungs- sicken 6 in der Außenwand 1 ausgebildet. Diese Sicken verhindern, daß bei der Montage eines Pumpenunterteils Luft eingeschlossen wird. Sie stehen nicht mit dem Zwischenraum zwischen der Außenwand und dem Innenbeutel in Verbindung.In the area of the opening 5 of the container, two ventilation beads 6 are formed in the outer wall 1. These beads prevent air from becoming trapped when installing a pump base. They are not connected to the space between the outer wall and the inner bag.
Der Behälter ist zur Aufnahme einer Substanz bestimmt, die Wasser enthält. Der Innenbeutel ist in einem vorbestimmten Maße für Wasserdampf durchlässig, der nach seinem Durchtritt durch die Wand des Innenbeutels die Expansion der Schicht 2 initiiert. Es bildet sich zwischen der Wand 1 und dem Innenbeutel 3 zunehmend ein Materialschaum, der den Zwischenraum zwischen diesen beiden Schichten bei Abgabe der Füllsubstanz ausfüllt und dabei den Innenbeutel 3 so abstützt, daß sich in diesem kein Unterdruck ausbilden kann. The container is designed to hold a substance that contains water. The inner bag is permeable to a predetermined degree for water vapor, which initiates the expansion of the layer 2 after it has passed through the wall of the inner bag. A material foam is increasingly formed between the wall 1 and the inner bag 3, which fills the space between these two layers when the filling substance is released and thereby supports the inner bag 3 in such a way that no negative pressure can form therein.

Claims

Patentansprüche claims
1. Behälter mit einer im wesentlichen formstabilen Außenwand und einem leicht verformbaren Innenbeutel, mit einem expandierbaren Material, das bei Einwirkung eines Mittels nach und nach in einen schaumförmigen und/oder gasförmigen Zustand übergeht und den mit der Abgabe von Füllgut aus dem Innenbeutel entstehenden Zwischenraum zwischen dem Innenbeutel und der Außenwand ausfüllt, d a d u r c h g e k e n n z e i c h n e t, daß das expandierbare Material (2) zwischen der Außenwand (1) und dem Innenbeutel (3) angeordnet ist und daß das Mittel durch die Wand des Innenbeutels oder die formstabile Außenwand zu dem expandierbaren Material (2) gelangt.1. Container with an essentially dimensionally stable outer wall and an easily deformable inner bag, with an expandable material that gradually changes to a foam and / or gaseous state when exposed to an agent and the space between the inner bag that arises with the delivery of filling material from the inner bag fills the inner bag and the outer wall, characterized in that the expandable material (2) is arranged between the outer wall (1) and the inner bag (3) and that the agent through the wall of the inner bag or the dimensionally stable outer wall to the expandable material (2) arrives.
2. Behälter nach Anspruch 1, dadurch gekennzeichnet, daß das expandierbare Material bei Einwirkung eines Mittels wenigstens teilweise in einen schaumförmigen Zustand übergeht.2. Container according to claim 1, characterized in that the expandable material at least partially changes into a foam-like state when exposed to an agent.
3. Behälter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Mittel ein Stoff ist, der mit dem expandierbaren Material in Kontakt gerät.3. Container according to claim 1 or 2, characterized in that the agent is a substance which comes into contact with the expandable material.
4. Behälter nach Anspruch 3, dadurch gekennzeichnet, daß der Stoff Wasserdampf oder Wasser ist.4. A container according to claim 3, characterized in that the substance is water vapor or water.
5. Behälter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das expandierbare Material Zitronensäure und Natrium-Bikarbonat aufweist. 5. Container according to one of claims 1 to 4, characterized in that the expandable material comprises citric acid and sodium bicarbonate.
6. Behälter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Innenbeutel aus einem Material besteht, das in einem vorbestimmten Maße durchlässig für Wasserdampf ist.6. Container according to one of claims 1 to 5, characterized in that the inner bag consists of a material which is permeable to water vapor to a predetermined extent.
7. Behälter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Mittel UV-Strahlen sind, die durch die Außenwand hindurch auf das expandierbare Material einwirken.7. Container according to one of claims 1 to 3, characterized in that the means are UV rays which act on the expandable material through the outer wall.
8. Behälter nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Behälter im Coextrusions-Blas- verfahren hergestellt ist.8. Container according to one of claims 1 to 7, characterized in that the container is produced in the coextrusion blow molding process.
9. Behälter nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das expandierbare Material als Schicht auf den Innenbeutel oder innen auf die Außenwand des Behälters aufgebracht ist. 9. Container according to one of claims 1 to 7, characterized in that the expandable material is applied as a layer to the inner bag or inside on the outer wall of the container.
EP00945598A 1999-07-29 2000-06-07 Container comprising an inner pouch Expired - Lifetime EP1227987B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200030371T SI1227987T1 (en) 1999-07-29 2000-06-07 Container comprising an inner pouch

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19935648 1999-07-29
DE19935648A DE19935648A1 (en) 1999-07-29 1999-07-29 Container with inner bag
PCT/DE2000/001849 WO2001008990A1 (en) 1999-07-29 2000-06-07 Container comprising an inner pouch

Publications (2)

Publication Number Publication Date
EP1227987A1 true EP1227987A1 (en) 2002-08-07
EP1227987B1 EP1227987B1 (en) 2004-03-03

Family

ID=7916476

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00945598A Expired - Lifetime EP1227987B1 (en) 1999-07-29 2000-06-07 Container comprising an inner pouch

Country Status (10)

Country Link
US (1) US7017761B1 (en)
EP (1) EP1227987B1 (en)
CN (1) CN1177731C (en)
AT (1) ATE260819T1 (en)
AU (1) AU5963300A (en)
DE (2) DE19935648A1 (en)
DK (1) DK1227987T3 (en)
ES (1) ES2216915T3 (en)
PT (1) PT1227987E (en)
WO (1) WO2001008990A1 (en)

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US20130032564A1 (en) * 2011-08-01 2013-02-07 Rosbach Travis R Thermal Metal Growler
USD740678S1 (en) * 2012-07-18 2015-10-13 Kikkoman Corporation Container
JP6025039B2 (en) * 2012-10-31 2016-11-16 株式会社吉野工業所 Blow molding container and inner layer processing method
CN104590661A (en) * 2013-10-30 2015-05-06 卞海兵 Bottle isolating air from remaining liquid in bottle after liquid pouring
CN104590662A (en) * 2013-10-30 2015-05-06 卞海兵 Downward outflow air isolation bottle
JP6562594B2 (en) * 2013-11-27 2019-08-21 キョーラク株式会社 Delamination container
AU2014355546B2 (en) 2013-11-27 2017-09-14 Kyoraku Co., Ltd. Delamination container
USD794460S1 (en) * 2014-06-19 2017-08-15 Klean Kanteen, Inc. Bottle with closure
USD784146S1 (en) * 2014-06-19 2017-04-18 Klean Kanteen, Inc. Bottle with closure
USD799146S1 (en) * 2016-01-15 2017-10-03 Mark Fuller Beverage container
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JP6959498B2 (en) * 2017-01-26 2021-11-02 キョーラク株式会社 Laminate peeling container
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Also Published As

Publication number Publication date
DK1227987T3 (en) 2004-07-05
CN1177731C (en) 2004-12-01
ATE260819T1 (en) 2004-03-15
AU5963300A (en) 2001-02-19
EP1227987B1 (en) 2004-03-03
PT1227987E (en) 2004-07-30
DE19935648A1 (en) 2001-02-15
ES2216915T3 (en) 2004-11-01
WO2001008990A1 (en) 2001-02-08
DE50005545D1 (en) 2004-04-08
US7017761B1 (en) 2006-03-28
CN1365333A (en) 2002-08-21

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