EP1595810A1 - Containers provided with a liner-bag and a one-way-valve - Google Patents

Abstract

The container (1) with a one-way delivery valve (2) and a closure cap (24) for liquid and pasty substances comprises an inner low-density polyethylene bottle (9) produced by a blow-molding injection process.

Description

This invention relates to a container having one inside it arranged inliner bag and a disposable dispensing valve.

When it comes to a liquid, viscous or pasty substance airtight to pack and later dosed to empty from a container, arise various technical problems to be solved. With these solutions The costs of their realization also play a role. In addition, the easy operation of the container for the metered removal of the ingredient significant.

For example, eye drops are used in hermetically sealed tubes packed and the contents must not come in contact with air, because otherwise it is with Germs would be polluted. That's why eye drops are in a plastic tube bottled and welded on both sides and can only in one once donated from the plastic tube. you refers to a single-use container for each serving to be administered Ingredient. The once opened plastic tube can not be redone closed and a residual content can not be returned at a later date be removed. If you pack a product that is sensitive to air Liquid or pasty mass in a container, for example in one Plastic containers or in a bottle for multiple applications (multiuse), this raises the problem that the output at the time of removal Volume in the tank interior must be replaced by air, if this his Keep shape, otherwise a removal is not possible. A solution Conventionally offer such containers, which in their interior a have deformable tubular bag, which is the actual air-sensitive Content. The opening of the tubular bag is inside the Container mouth connected to the same and may contain a one-way valve. This one-way valve is made of molded plastic and must be separately with the tubular bag are sealed, for example, with him be welded. Between the tube bag opening or the welded one-way valve and the container mouth can air through special provided channels flow into the container, which then the room between the tubular bag and the container interior. Without such Ingress of air into the container could not drain the tubular bag become. There must be a void in the removal of the ingredient. Such arranged in containers or bottles tubular bag are used as inliner bag designated.

However, this solution with a conventional inliner bag is consuming in the assembly and accordingly expensive. The tubular bag and her One-way valves must be manufactured separately and by different methods and then sealed tightly together. The After that, pouches have to be rolled or folded to get through the Container or bottle muzzle into the inside of the container or bottle to be able to be introduced. Generally, it would be desirable to have a container or to have a bottle inside which is a liquid or more or less viscous or pasty mass could be kept airtight, which would be easier to manufacture and from which then any doses if required be removed without the remaining in the bottle or container Content with air in contact. Especially in demand would be such a bottle or such a container for germ-free stored content. Many ingredients must because of the problem of storage and the metered issue with Preservatives are provided because an air intake is not quite can be prevented. A clean technical solution, that the hermetically sealed, airtight bearings and metered dispensing for multiple Allowing appeals could include the use of preservatives make redundant and therefore offer great advantages. But even if it is not the question of preservative freedom goes, offer a container or a cheaper manufacturable bottle for airtight storage and / or the metered removal of the contents with or without air intake great advantages.

It is therefore first the object of the present invention to provide a To create containers with an inliner bag arranged inside it cheaper to produce and assemble. Next it is a job of to create such a container with inliner bag, which is the safe airtight Storage and simple metered dispensing of a liquid or pasty substance made possible and consists of a minimum number of individual parts, is inexpensive to produce and easy to assemble. Another task The invention is to provide a one-way valve, which consists of only two parts and which is suitable for such a container with inliner bag.

This task is solved by a container with one in its interior arranged inliner bag and a disposable dispensing valve, thereby It distinguishes that the inliner bag by a low-Densitiy spray blown Polyethylene (LDPE) manufactured inliner bottle with dispensing nozzle is and the One-way valve from a matching in the outlet nozzle with Output channel and conically expanding mouth consists, as well as from a from the outside into this output channel pluggable cannula with integral with it connected tension spring and conical valve, which conical valve with the expanding Mouth of the output channel cooperates while the cannula under Preload the tension spring in the output channel can be latched. The task becomes further solved by a one-way valve, suitable for installation as a disposable dispensing valve in the outlet of a low-density polyethylene (LDPE) injection-blown inliner bottle, which is characterized by being made one in the discharge nozzle fitting plug with output channel and conically expanding mouth exists, as well as from an outside in This output channel pluggable cannula integrally connected to it Tension spring and conical valve, which cone valve with the widening mouth of the Output channel cooperates, while the cannula under bias of the Tension spring in the output channel can be latched.

In the drawings, an embodiment of such a container presented in the form of a bottle with disposable dispensing valve. Based on this Drawings of this container with its interior arranged inliner bag as well as the disposable dispensing valve described which for the Output socket of such inliner bag is suitable, and the function of the whole tank with all its parts is explained.

Figur 1:

Den Behälter mit Inliner-Beutel, Verschlusspfropfen und Kanüle in einem Längsschnitt und leicht perspektivisch dargestellt, mit einer aufgesetzten Verschlusskappe;

Figur 2:

Den Inliner-Beutel gesondert in einer Gesamtansicht dargestellt;

Figur 3:

Den Behälter mit Verschlusskappe sowie Inliner-Flasche und Einwegventil in einem Längsschnitt dargestellt;

Figur 4:

Die Kanüle mit einstückig mit ihr verbundener Zugfeder und Kegelventil gesondert in einer Gesamtansicht dargestellt;

Figur 5:

Den Oberteil des Behälters mit dem Einwegventil in vergrösserter Darstellung, in einem Längsschnitt dargestellt.

It shows:

FIG. 1:

The container with inliner bag, plug and cannula in a longitudinal section and slightly perspective view, with an attached cap;

FIG. 2:

The inliner bag shown separately in an overall view;

FIG. 3:

The container with cap and inliner bottle and one-way valve shown in a longitudinal section;

FIG. 4:

The cannula with integrally connected with her tension spring and conical valve separately shown in an overall view;

FIG. 5:

The upper part of the container with the one-way valve in an enlarged view, shown in a longitudinal section.

1 shows a container, here in the form of a plastic bottle 1, with its dispensing valve 2 in all its parts in a longitudinal section, wherein the representation is chosen slightly perspective in order to view the spatial to do. The outer bottle 1 is preferably made of a low-density polyethylene (LDPE) and can be produced by injection blow molding. Points down the outer bottle 1 a slightly raised bottom 3, bringing a Ringfäche is formed, which ensures a better stability of the bottle. On your Top is first formed a first shoulder 4, from which the bottle 1 slightly rejuvenated. At this tapered section 5 closes at an angle to Longitudinal axis arranged obliquely shoulder 6, to which the Bottle neck 7 connects, which in the example shown an external thread 8 has.

This outer bottle 1 is thanks to the manufacturing material and their Manufacturing process elastically deformable. She can with her at the circumference Hand or two fingers are pressed together, increasing the volume of their content. Inside this bottle 1, the rest also a can be differently shaped, elastically deformable container is an inliner bag 9 arranged. But this inliner bag 9 is now in complete departure from the conventional technology is not designed as a tubular bag, but also as a spray-blown container or just as a spray-blown bottle. These ones Injection blown in-line bottle 9 passes over a first bevelled shoulder 10 on a tapered section 11 over. This fits in the tapered section 5 on the outer bottle 1 a. It is followed by another oblique shoulder 12, from the upper end of an outlet port 13 connects. This Dispensing nozzle can be plugged into the bottle neck from the outside, or optionally glued or welded with it. As a special feature now has this injection-blown in-line bottle 1 shown here in the area of her upper sloping shoulder 12 or in the lower part of its dispensing nozzle 13 a radially outwardly projecting brim 14, the outer edge of the Inside the inclined shoulder 6 rests against the outer bottle 1 and thus a Poppet valve forms. Due to the geometry, this brim 14 is slightly down curved so that it acts as a one-way valve. It can be air from top to bottom between the brim edge and the inner surface of the outer bottle 1 down stream. Conversely, if the pressure below the brim 14 increases, the more strongly pressed against the oblique shoulder 6 of the outer bottle 1 and closing the passage between Krempenrand and Oblique shoulder 6.

To the injection blown inliner container or in the present Example as a bottle executed injection-blown in-line bottle 9 to Close, is a plug 15 in the discharge port 13 of this inliner bottle 9 used. The closure plug 15 made of injection-molded plastic is sealed connected to the discharge port 13 by inserting into the same becomes. In addition, he can if necessary, if, for example, water vapor tightness is required to be welded by means of ultrasound in the same. When Alternative also offers welding by means of friction welding, in that the closure plug 15 rotates rapidly in the dispensing nozzle 13 for a short time so that the friction surfaces heat up and a sealing weld is achieved. Also, a glueing of these two parts is conceivable. Of the Sealing plug 15 has on its outer side a bead 16, which an intimate fit and connection with the inside of the dispensing nozzle 13 supported, and this has a corresponding groove. Above is the Closure 15 provided with a lid 17 with a central hole. From the same extends a dispensing tube 18 upwards, which a Output channel 19 forms at the end of widening mouth 20. Of the Closure plug 15 forms an additional part with a one-way valve. in the Inside of the output channel 19, namely a cannula 21 is in one piece with her connected tension spring 22 and cone valve 23, which cone valve 23 with the expanding mouth 20 cooperates with the closure plug 15. The cannula 21 is inserted from above into the discharge channel 19 of the closure plug 15. you After this, the lower end projects out of the lower end of the discharge channel 19. This tail has in its peripheral surface over one of her recessed groove, which over a corresponding bead on the inside the output channel 19 engages. Thus, the cannula 21 is fixed to the Closure plug 15 connected and snaps on the output channel 19 a. It will the tension spring 22 slightly loaded on train and thus biased. So she pulls that cone-shaped valve 23 down so that it widens the conically widening Mouth 20 of the output channel 19 closes sealing. Over the whole Upper part of the outer bottle 1 and its closure plug 15 with discharge tube 18, a closure cap 24 is inverted. This is here as a threaded cap executed, that is equipped with an internal thread.

In Figure 2, the inliner bag is separately in an overall view shown. One recognizes the bottle body 9 with the following one first shoulder 10, the tapered portion 11 and the subsequent thereto Oblique shoulder 12, as well as to the same subsequent outlet 13th Lowest region of the output nozzle 13 is here the outwardly projecting Brim 14 molded, the poppet valve with the inside of the outer bottle 1 to act is determined. On the outside of the output nozzle 13 can be seen a bead 25. When this inliner bottle 9 is inserted into an outer bottle 1 is, so this bead snaps 25 into a corresponding groove in the inside of the Bottle neck 7 of the outer bottle. On the inside of the Output nozzle 13, a groove 26 can be seen. It is the groove 26, in which the bead 16 fits on the outside of the closure plug 15, as has already been described for Figure 1 and shown there.

In the outside of the dispensing nozzle 13 of the inliner bottle 9 is a Groove 27 recognizable, which extends in the longitudinal direction of the dispensing nozzle 13 and also the bead 25 interspersed. This groove 27 serves to guide the air when dispensing content from the inliner bottle 9, as will become clear later. These Inliner bottle 9 is produced as a special feature by injection blow molding, namely from a suitable low-density polyethylene (LDPE). It is therefore elastic deformable. Thanks to this feature can be squeezed so far be that they through the bottle neck 7 of the associated outer bottle. 1 can be inserted with its bottom forward and pushed into it can be. To facilitate this pushing in, the injection-blown Inliner bottle 9 first placed in a sealing over a nozzle over which the Bottle contents are evacuated. In doing so, the bottle 9 contracts and points then everywhere a smaller diameter than that of the bottle neck 7 of the Outer bottle 1 on. By deliberately dimensioning the inliner bottle wall, that means running a little thinner at one point, can be achieved be that the bottle contracts in such a way that the Brim and thus the poppet valve formed by her down to the bottle applies and thus is curved in the right direction. Im contracted The injection blown inliner bottle can effortlessly penetrate the interior of the machine Outside bottle 1 are pushed into it. If the outlet nozzle of the inliner bottle 9 is snapped into the bottle neck 7, the inliner bottle 9 is in Inside the outer bottle again filled with air and afterwards with ingredient. she thus nestles against the inner surface of the outer bottle 1. Of the Output port 13 of the inliner bottle 9 closes tight to the inside of the Bottle neck 7 and the elastically down and up bendable projecting brim 14 closes with its outer edge sealingly against the opposite inclined surface 6 on the inside of the outer bottle 1 at. Now the bottle is filled, in the case of eye drops, the filling is sterile, This means that only sterile air is filled into the bottle. If the inliner bottle 9 is filled, the sealing plug 15 with the one-way valve. 2 and afterwards the inliner bottle is hermetically sealed.

FIG. 3 shows the container with closure cap and inliner bottle 9 and one-way valve 2 shown in a longitudinal section. Here you can see that in the lid 17 of the closure plug 15, a radially extending channel 28 from outer edge extends inwardly and its end with the groove 27th communicates, which is visible in Figure 2. In the bottom of the lid 17 can be excluded an annular groove, so that the groove 28 leads into the same and the air around the plug can flow into the groove 27. When Variant may also be the output port 13 of the inliner bottle 9 at the top be chamfered on its outside, so that such an annular groove is formed. About this channel 28, thereafter the annular groove and then the groove 27 can Air in the space between the outer bottle 1 and the inliner bottle 9 arrive, so that deforming the inliner bottle 9 with the issue of Ingredient is made possible. At the bottom of the cap 24 is still a Guarantee tape 29 visible, which in a known manner over some predetermined breaking points is connected to the lower edge of the cap 24. The Cap 24 can therefore only break these predetermined breaking points be unscrewed. Either the closure cap 24 has to be strong be rotated or the guarantee strip 29 is previously torn off separately. On In each case, this is an initial opening guarantee. If the Cap 24 is removed, the contents of the inliner bottle 9 through the one-way valve 2 escape as soon as the pressure inside the inliner bottle. 9 is greater than the prevailing external pressure. To build one Overpressure, the outer bottle 1 is compressed at its flanks, whereby also the inliner bottle 9 is compressed. Under the resulting pressure, the wedge-shaped one-way valve 2 under stretching the Tension spring 22 is pressed outwards, so that the valve 2 by lifting the Cone 23 opens and ingredient through the cannula 21 and around the cone 23 of the Valve 2 can flow to the outside.

FIG. 4 shows the cannula insertable in the plug 15 in one piece with her associated tension spring and conical valve separately in one General view shown. This component forms together with the Closure plug 15 a one-way valve. It is injected as a one-piece piece and therefore very inexpensive to manufacture. It is first with the Plugs 15 assembled together, as long as this is not used is. For this purpose, the component from the outside through the output channel 19th of the dispensing tube 18 is plugged on the closure plug 15 until its lower end protrudes down from the dispensing tube 18. Then it can be pulled from there until its groove 30 at a corresponding annular bead in the interior of the Output tube 18 snaps, so that the entire cannula 21 with shaft 31 and Cone 23 is securely held as a one-way valve 2 in the delivery tube 8. It sits the Cone 23 of the one-way valve 2 precisely in the widening conically Mouth 20 of the dispensing tube 8 and seals the same reliable and airtight because this cone 23 is constantly under a tensile force, which of the intermediate tension spring 22 is generated, which in the assembled state of the Component is slightly stretched and therefore produces a bias. At the Outside of the cone valve, that is, on the shaft 31 can be seen a Groove 32. If the cone valve is below the outlet when dispensing bottle contents Pressure of the liquid is raised inside the inliner bottle 9, the flows upper end of this groove 32 in the conically widening portion 20 of the Mouth of the dispensing tube on the sealing plug 15 and thus is a Ensures connection to the outside, through which escape the liquid can.

FIG. 5 shows the upper part of the container with the one-way valve in FIG enlarged representation shown in a longitudinal section. The arrow indicates, in which direction the one-way valve moves as soon as the pressure from below bigger than the one from the outside. The liquid passes through the cannula 21, the Tension spring 22 and then through the groove 32 in the shaft of the one-way valve. 2 and afterwards it emerges outward around the cone 23, when the Outer bottle 1 is compressed. When the pressure on the bottle 1 is reduced again, so it deforms elastically back to its original shape. The result is between the outer bottle 1 and the injection-blown inliner bottle 9 a negative pressure to the atmosphere. That's why then over the radial channel 28, the subsequent annular groove and thereafter through the channel 27 sucked air and enters the space between the inliner bottle 9 and the outer bottle 1. The inliner bottle 9 remains in its with each dispensing of Liquid or paste slightly more compressed state, because it can yes, no liquid, air or paste can flow back in from outside. she is thus always filled with liquid or paste. The outside specially supplied air therefore fills the space between the inliner bottle 9 and the Outer bottle 1 when it expands back to its original shape. The air flowing in through the channel 28 and 27 opens the poppet valve further down, which of the radially projecting brim 14 on the outside of the Stutzens 13 of the inliner bottle 9 is formed. In this case, this brim 14 is easy Curved down and when there is no more air over its edge down flows, closes this brim 14 with its edge back to the inside of the Outer bottle 1 or at the local oblique shoulder 6 and closes airtight. The next squeezing the outer bottle 1 is therefore the injection-blown inliner bottle 9 further compressed, reducing the pressure inside it rises and thus the one-way valve 2 against the prevailing Atmospheric pressure is able to open. When you release the outer bottle 1 flows in turn, air inwards, and exactly the volume which the Volume of the dispensed ingredient corresponds.

This inliner bag, designed here as the actual inliner bottle 9, is produced as a special feature by injection blow molding and thus forms no Tubular bag. It allows the realization of the important if necessary poppet valve 14, which ensures the subsequent flow of air by opening it, and afterwards closes again and re-squeezing this inliner bottle 9 allows. The whole container or this whole bottle allows one Keep the ingredient completely hermetically sealed, so that at no stage, not even while dispensing ingredient, air and thus any Germs can get into the interior of the inliner bottle 9. Because of this hermetic conclusion, which nevertheless a repeated dosing spending Of content allows, in many cases, to a preservative be waived. Such a container bottle with injection-blown inliner bottle 9 is therefore ideal for packaging and dispensing For example, eye drops substances, and of course for many other different substances is also suitable.

The container with inliner bottle 9 and one-way valve 2 in this way can for such different contents are specifically designed, that is the volume and the shape of the bottle 9 can be adjusted. The necessary pressure for that Opening the one-way valve 2 can be done by changing the tension of the valve spring 22 can be varied. The rigidity of the outer bottle 1 as well as the Inliner bottle 9 can be specially designed for various applications. In total, the entire container with one-way valve consists of only four in one piece injection molded parts or injection blown parts and the associated Aufsetz- or cap 24, and the installation of the few Parts is easy. The one-way valve itself consists of only two parts. All that helps to reduce the cost of mass production of such containers to reduce. At the same time the handling of the container or the bottle to Relief of certain portions easier.

It may also make sense to have a blown inliner bottle without it One-way valve and also without poppet valve in an outer bottle to use. To the Example, the inliner bottle made of a soft barrier material, for Example, made of a soft polyamide to be in a suitable Bottle, no matter how it was previously made. Also is the one-way valve located here, which consists of only two components, also suitable for other applications of the same kind.

Claims (9)

Container with an inliner bag arranged in its interior and a disposable dispensing valve, characterized in that the inliner bag is an inliner bottle (9) produced by injection blow molding with low-density polyethylene (LDPE) and having dispensing nozzles (13) One-way valve from a in the dispensing nozzle (13) fitting plug (15) with output channel (19) and conically widening mouth (20), as well as from the outside in this output channel (19) pluggable cannula (21) integrally connected to it Tension spring (22) and conical valve (23), which conical valve (23) with the widening mouth (20) of the output channel (19) cooperates, while the cannula (21) under bias of the tension spring (22) in the output channel (19) can be latched. One-way valve, suitable for installation as a disposable dispensing valve in the dispensing nozzle of a low-density polyethylene (LDPE) injection-blown inliner bottle (9), characterized in that it consists of a in the dispensing nozzle (13) fitting plug (15) with output channel ( 19) and conically widening mouth (20), as well as from an externally in this output channel (19) pluggable cannula (21) integrally connected with her tension spring (22) and conical valve (23), which conical valve (23) with the expanding mouth (20) of the output channel (19) cooperates, while the cannula (21) under bias of the tension spring (22) in the output channel (19) can be latched. Container with an inliner bag arranged in its interior and a disposable dispensing valve according to claim 1, characterized in that the inliner bottle (9) in the shoulder region (12) of the dispensing nozzle (13) or in the lower region of the same outside a radially projecting brim (14), which is intended to act as a poppet valve on the inside of the outer container (1). Container with an inliner bag arranged in its interior and a disposable dispensing valve according to one of claims 1 or 3, characterized in that the inliner bottle (9) has a radially projecting rim (14) in the lower region of its dispensing nozzle (13) on the outside. which is intended to act as a poppet valve on the inside of a sloping shoulder (6) of the bottle (1). Container with an inliner bag arranged in its interior and a disposable dispensing valve according to one of claims 1, 3 or 4, characterized in that the inliner bottle (9) in a shoulder region (12) to its output port (13) outside a radially projecting brim (14), which is intended to act as a poppet valve on the inside of a sloping shoulder (6) of the bottle (1). Container with an inliner bag arranged in its interior and a disposable dispensing valve according to one of claims 1 or 3 to 5, characterized in that the closure plug (15) with dispensing channel (19) has on its outer side a bead (16) which an intimate fit and connection with the inside of the dispensing nozzle (13) supported, which for this purpose has a corresponding groove. Container with an inliner bag arranged in its interior and a disposable dispensing valve according to one of claims 1 or 3 to 6, characterized in that the closure plug (15) at the top is provided with a lid (17) with a central hole, starting from the same a dispensing tube (18) extending upwardly forming an exit channel (19) with an end-widening mouth (20). Container having disposed in its interior liner bags, as well as a one-way dispensing valve according to one of claims 1 or 3 to 7, characterized in that the cover (17) of the Verschlusspropfens (15) a radially extending channel (28) from the outer edge of extends inwardly and its end via an annular groove either in the lid or formed by chamfering the outer edge of the dispensing nozzle (13) of the inliner bottle (9) with a groove (27) communicates, which on the outside of the closure plug (15 ) extends downwards and opens into the space between the outer bottle (1) and the inliner bottle (9). Container with an inliner bag arranged in its interior and a disposable dispensing valve according to one of claims 1 or 3 to 8, characterized in that in the shaft (31) of the conical valve, a groove (32) extending in its longitudinal direction is recessed, which below into the space of the tension spring (22) and at the top into the cone (23) of the conical valve, and that in the delivery tube (18) of the plug stuck cannula (21) outside a circumferential groove (30), which upon insertion into the dispensing tube (18) snaps on a corresponding bead on the inside, in which state of the cannula (21) the tension spring (22) connected to the conical valve (23) is biased.

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