EP0520491A1 - Squeeze-bottle with internal container - Google Patents

Abstract

The invention relates to a squeeze-bottle with an elastically deformable external container (12) and an internal container (10) which receives the contents and is supported in its region (40) facing the delivery opening by a support part (24) which is elastically deformable in such a way that it can be inserted in the external container (12) with the internal container in a compressed state through the neck opening of the external container (12) whose cross-sectional dimensions are smaller than the cross-sectional dimensions of the support part in an unstressed state. <IMAGE>

Description

The invention relates to squeeze packaging according to the preamble of claim 1.

In such, e.g. B. by the EP-B1-0 190 169 known squeeze packaging, which are generally used for viscous fillings, such as toothpaste, often makes the complete emptying of the inner container difficult. These are due to the fact that the air compressed when manually compressing the outer container in the space between the outer container and the inner container deforms the bag-like inner container in such a way that areas of the same in which there is still filling material are pinched off relative to the discharge opening. This is essentially due to the fact that a uniform compression of the inner container under the action of the excess pressure is not always achievable, especially since the course of the change in shape that the inner container undergoes under the action of the excess pressure can also depend on the position that the packaging during dispensing of filling material by squeezing the outer container. Incidentally, this also applies if, as will generally be the case when the inner container is still completely or almost completely filled, the manually applied pressure acts directly on the inner container.

The teaching according to EP-A-0 305 003 attempts to counter this problem in that the inner container is attached to the outer container approximately in the central region of its axial extent and at its upper end along its circumference, with the result that the section of the discharge opening facing the Inner container under the influence of the existing excess pressure in the space between the outer container and inner container when the first overpressure is compressed, or experiences only an insignificant deformation.

In contrast, the excess pressure leads to a deformation of the section of the inner container facing away from the discharge opening in the sense of a reduction in the volume enclosed by this section. The consequence of this is that the filling material located in this section is first displaced in the direction of the discharge opening and a corresponding quantity of filling material flows outwards from the discharge opening of the packaging. A further removal of filling material by correspondingly squeezing the outer container finally leads to a more or less complete emptying of the easily deformable section of the inner container facing away from the dispensing opening, so that an intermediate stage is reached, in which essentially only the section of the dispensing opening facing the dispensing opening is reached Inner container is filled with product. Provided that the inner container is connected to the outer container approximately in the central region of its axial extent, the packaging is still approximately half full at this stage. The emptying of the section of the inner container facing the dispensing opening takes place in that, under the action of the excess pressure which occurs when the bottle is squeezed together in the space between the inner container and the outer container, the section facing away from the dispensing opening is pushed and turned over into the other section facing the dispensing opening and thereby displaced in the section fastened in the outer container in the direction of the discharge opening. In this way, if the free, easily deformable section does not have too great an axial extension, deformations of the inner container, which lead to a constriction of parts of the filling material by the formation of pockets, can be avoided.

The production of the squeeze bottle according to EP-A-0 305 003 is due to the fact that the inner container is attached to the outer container, somewhat complicated and therefore expensive. Furthermore, due to the fact that the inner container is attached to the outer container at its end facing the discharge opening is the need to mount the valve, via which the space between the inner container and outer container can be connected to the outside atmosphere, in the area of the packaging facing away from the dispensing opening. This limits the possibility of designing such packaging. Overall, the handling of the inner container, which mainly consists of very thin film material, is somewhat difficult when it is attached to the outer container, especially since the outer container cannot be produced in one piece. This also applies to the embodiment disclosed in EP-A-0 305 003, in which the bag-like inner container extends only approximately over half the axial length of the packaging and at its open end facing the dispensing opening in the central region of the axial extent of the outer container this is tightly attached over the entire circumference. In addition, this known squeeze packaging is not very suitable for filling material, which is such that the wall of the container receiving it must be impermeable to certain gaseous substances, for example oxygen. Squeeze packs of the type in question here generally consist of thermoplastic materials. The materials mainly used for this, for example polyolefins, have the disadvantage, however, that they are permeable to certain substances. For this reason, it is known and customary to provide the walls of plastic containers with multiple layers, if necessary, at least one of these layers functioning as a barrier layer which is impermeable to the materials in question, that is to say to the oxygen already mentioned. However, such hollow bodies made of thermoplastic material and provided with a multilayer wall are relatively expensive. In the case of squeeze packaging with an inner container, the inner container will therefore be provided with a barrier layer, since air and thus oxygen also get into the space between the outer container and the inner container for emptying the inner container. In addition, the inner container is normally noticeably thinner than the outer container.

The invention is therefore based on the object to design a packaging according to the preamble of claim 1 so that the disadvantages of known packaging are avoided. In particular, it should be achieved that such. B. formed as a squeeze bottle squeeze packaging on the one hand completely or at least almost completely emptied without difficulty, regardless of the position that it occupies during the dispensing of filling material, but on the other hand producing and assembling the pack experience no complication. In particular, the packaging should not experience any restrictions with regard to its applicability and usage properties. Last but not least, this also applies to the possibility of using already existing and tried-and-tested container shapes for the production of squeeze packaging. That is, it should be possible to accommodate an inner container in such types of packaging, the latter then taking over the function of the outer container. Furthermore, it should be possible to manufacture the outer container in one piece, even if the inner container has a cross section in the filled state that is larger than the opening of the outer container.

This object is achieved with the features of the characterizing part of claim 1.

Due to the fact that the inner container, independent of the outer container in its area of the discharge opening facing its axial extension, is prevented from being significantly deformed under the influence of the overpressure acting in the space between the outer container and the inner container, greater flexibility in manufacture, assembly and filling becomes possible of the packaging. The approximately cage-like or basket-like support device essentially supports the section of the inner container which faces the dispensing opening radially, so that this section does not undergo any significant deformation under the action of a pressure difference between atmospheric pressure and the gas pressure in the space between the outer container and the inner container, which could lead to a noticeable change in the volume, in particular a reduction in the volume in this section. Admittedly, since the web-like support elements are arranged at intervals from one another in the circumferential direction, no direct radial support of the wall of the area of the inner container provided with the support device will take place in the areas of the support device between each two adjacent web-like support elements. However, this is irrelevant, since the only thing that matters is to prevent this area of the inner container from being compressed with a noticeable reduction in volume caused thereby. The squeeze packaging according to the invention can also be filled in the usual way. The support body is not a hindrance. It is also possible to refill the packaging after emptying and reuse it.

In general, the support device will be adapted to the contour of the outer container in order to make the best possible use of the available volume. This means that, for example, in the case of a bottle provided with a shoulder, the web-like support elements can be shaped in accordance with the course of the wall of the outer container. This is not a particular problem, since the support device can also be made in one piece from thermoplastic material, for example by injection molding, including, if appropriate, the holder supporting the web-like support elements, which is generally collar-shaped or ring-shaped, so that the bag-like Inner container at its end facing the discharge opening tightly with this holder z. B. can be connected by welding or gluing. In general, the holder thus has the opening through which the filling material emerges from the inner container.

The ring-shaped holder for the web-shaped support elements is advantageously inserted in the opening area of the outer container, the ring-shaped holder being able to be provided with a circumferential flange at its free end, the outside diameter of which is somewhat larger than the inside diameter of the opening of the outside container, in order to achieve a positive fit. so that this flange rests on the end face of the edge delimiting the opening of the outer container. The holder or its circumferential flange can then be held in the desired position by the closure part which is usually present.

The valve, via which the space between the outer container and the inner container is ventilated, can be attached to the actual outer container, for example in the bottom thereof. However, it is also possible to arrange the ventilation valve in the closure analogously to the version according to EP-B1-0 190 169, since this leads to a simpler manufacture of the outer container. When the valve is arranged in the closure, air channels can be provided between the annular holder and the outer container, in particular the neck thereof, through which the connection between the ventilation valve fitted in the closure and the space between the inner container and the outer container is established. Such channels can generally be formed in the manufacture of the outer container and / or the support part or the holder without requiring a special operation.

According to a further feature of the invention, it may be expedient that at least two of the web-like support elements at their end, which is turned away from the holder carrying them, are connected to a common support ring made of elastically deformable material, which is essentially perpendicular to the longitudinal axis of the squeeze packaging runs. This support ring, which also suitably consists of plastic, is arranged approximately in the middle of the axial extent of the inner container, So at the transition between its one area, which is supported by the support device, and the other area, which is not supported and is easily plastically deformable under the action of an overpressure in the space between the outer container and inner container, displacing the contents contained therein. In general, with regard to the function of the support device, it will be necessary to provide at least three web-like support elements. In this case, it is possible not to firmly connect the web-like support element (s) going beyond two web-like support elements to the support ring in order to facilitate its deformability when assembling the parts. However, in order, on the other hand, to be able to determine the position of the individual parts of the support body, at least within narrow limits, it will generally be expedient that the end region of the longitudinal web-like support elements which is not connected to the support ring is adapted to the support ring in such a way that at inside the outer container is a positive connection between the support ring and the non-connected web-like support elements.

In addition, it has proven to be advantageous that the inner container on the side of its wall that comes into contact with the support ring is provided with at least one projection which is arranged on the side of the support ring facing away from the discharge opening and engages behind the latter. This configuration has the advantage that a certain form fit is created between the actual inner container and the support device, so that the position of the inner container is fixed relative to the support device. It is also possible to weld or glue the inner container, if necessary additionally, to one or more of the web-shaped support elements or also to the support ring. This also determines the position of the inner container relative to the support device and thus also to the outer container.

The main advantage of such squeeze packaging is that the support device can be radially compressed to such an extent that the transverse dimensions of the support ring and all web-like support elements including the inner container are not larger than the cross-sectional area of the opening in the outer container in the area of their smallest cross-section or diameter. In this compressed state, the support device with the inner container carried by it can be inserted into the outer container through the opening of the outer container, web-like support elements and support ring springing back into their normal positions with or without mechanical support after passing through the opening of the outer container with or without mechanical support and at the same time expand the inner container within the outer container.

Fig. 1

im Schema die perspektivische Ansicht einer Verpackung gemäß der Erfindung,

Fig. 2

einen Längsschnitt durch die Verpackung, jeoch ohne Verschluß,

Fig. 3

die perspektivische Ansicht einer Stützvorrichtung,

Fig. 4

die dazugehörige Draufsicht,

Fig. 5

einen Längsschnitt eines Innenbehälters, der noch den größten Teil des Füllgutes enthält,

Fig. 6

einen Längsschnitt des Innenbehälters gemäß Fig. 6 in entleertem Zustand,

Fig. 7

die perspektivische Ansicht eines Außenbehälters in einem Zwischenstadium beim Einführen des Innenbehälters mit darin angeordneter Stützvorrichtung durch die Halsöffnung des Außenbehälters in diesen hinein,

Fig. 8

eine zweite Ausführungsform der Halterung für den Innenbehälter in perspektivischer Darstellung,

Fig. 9

die Seitenansicht eines Innenbehälters, der aus zwei Folienzuschnitten besteht,

Fig. 10

einen Schnitt nach der Linie X-X der Fig. 9,

Fig. 11

die perspektivische Ansicht einer zweiten Ausführungsform der Stützvorrichtung,

Fig. 12

die perspektivische Ansicht der zweiten Ausführungsform eines Innenbehälters.

In the drawing, some embodiments of the invention are shown in the diagram. Show it

Fig. 1

in the diagram the perspective view of a package according to the invention,

Fig. 2

a longitudinal section through the packaging, but without closure,

Fig. 3

the perspective view of a support device,

Fig. 4

the corresponding top view,

Fig. 5

a longitudinal section of an inner container that still contains most of the contents,

Fig. 6

6 shows a longitudinal section of the inner container according to FIG. 6 in the emptied state,

Fig. 7

the perspective view of an outer container in an intermediate stage when inserting the inner container with the support device arranged therein through the neck opening of the outer container into it,

Fig. 8

a second embodiment of the holder for the inner container in a perspective view,

Fig. 9

the side view of an inner container, which consists of two film blanks,

Fig. 10

a section along the line XX of Fig. 9,

Fig. 11

the perspective view of a second embodiment of the support device,

Fig. 12

the perspective view of the second embodiment of an inner container.

Figures 1 and 2 show a packaging designed in the manner of a squeeze bottle with an inner container 10, an outer container 12 and a closure 14 which can be screwed or plugged onto the neck 16 of the outer container 12. The outer container 12 is made in one piece. The neck 16 of the same and the opening 18 delimited by it each have a diameter which is noticeably smaller than the diameter of the actual body 20 of the outer container 12. The outer container 12 and inner container 10 and possibly also the closure 14 are advantageously made of plastic. The outer container 12 is substantially dimensionally stable, i.e. i.e., self-supporting, but elastically deformable under the influence of manually applied forces. It can advantageously be produced from a polyolefin, for example polyethylene in a blowing process; however, other materials can be used for this.

The inner container 10 consists predominantly of a thin film, so that it is bag-like, i.e. that is, not self-supporting, trained and easily deformable.

The inner container 10 is also provided with a neck part 22, the outer diameter of which is adapted to that of the neck 16 of the outer container 12.

In order to allow the shape change taking place when the inner container 10 receiving the filling material is emptied in such a way that parts of the inner container 10 are prevented from being pinched off with the filling material therein are, a support member 24 is further provided, which is arranged within the inner container 10. In the exemplary embodiment shown in the drawing, this support part 24 consists essentially of four web-like support elements 25, 26, 27, 28, an essentially annular holder 30 and a support ring 32 which is arranged on the end of the web-like support elements facing away from the annular holder 30 . The inner container 10 is in this embodiment with its neck region 22 on the extension 54 of the ring-shaped holder 30 firmly and tightly connected, for example by gluing or welding, as can be seen in particular in FIG. 2, so that the ring-shaped holder 30 in the in the drawing The illustrated embodiment represents part or extension of the inner container 10. The ring-shaped holder 30, which defines the outlet opening 39 of the inner container 10, is dimensioned and designed in such a way that it can be inserted in a suitable manner into the neck region 16 of the outer container 12. To produce a positive connection, it is provided at its free end with a circumferential flange 34 which, in the assembled state of the parts, engages over and lies against the end face 36 of the neck 16 of the outer container 12. The web-shaped support elements 25, 26, 27, 28 are adapted to the contour of the outer container 12 with regard to their course between the annular holder 30, with which they are connected in one piece, and the support ring 32. The dimensions and shape of the support ring 32 correspond approximately to those of the inner container 10 and possibly approximately to those of the inner contour of the outer container 12. Since, as will be described below, the web-like support elements 25-28 and the support ring 32 at the end of the support elements so deformable, ie must be compressible, that their total cross-section is not larger than the cross-sectional area of the opening 18 delimited by the neck 16 of the outer container 12, only two of the four web-like support elements, namely the support elements 25 and 26, are firmly connected to the support ring 32. The other two support elements 27 and 28, however, are not connected to the support ring 32, so that the latter can deform more easily when the support elements 25-28 are compressed for the purpose of inserting the support part 24 into the outer container 12. However, both support elements 27 and 28, which may be under an outward bias, are adapted near their free end to the annular support ring 32, so that in the assembled state of the parts there is a positive connection between the support ring 32 and those not firmly connected to it web-like support elements 27 and 28 results. 3 and 4, the web 27 is shown in contact with the support ring 32, as is effected by the inner bag 10 or the outer container 12 in the assembled state of the parts. The web 28 is shown in an outwardly spread position, as in the unstressed state, for. B. after production. This spread position is caused by the aforementioned bias. In particular, FIG. 3 also shows the projections 37, 38 attached on the inside, which overlap the support ring 32 somewhat when the parts are assembled.

The support body 24 is elastically deformable and advantageously also made in one piece from thermoplastic material, for example by injection molding. The wall thickness of the web-like support elements 25-28 and the thickness of the support ring 32 are selected such that these parts are readily elastically deformable, for example under the action of manual forces acting on the outer container 12, but due to their elasticity in unstressed condition the starting position shown, for example, in FIGS. 1 and 2 decrease.

The extension of the support part 24 in the direction of the longitudinal axis of the inner container is dimensioned such that the support ring 32, which is the end of the support remote from the annular holder forms part, the inner container 10 divided into about two equal areas 40, 42. The area 40 of the inner container 12 is supported by the support part 24 in such a way that, apart from the case of manually squeezing the packaging, it maintains its cross-sectional shape, whereas the area 42 is permanently deformed under the action of external forces.

At the bottom 44 of the outer container 12 there is a one-way valve 46 which only allows air to pass from outside into the space 48 between the outer container 12 and the inner container 10. The closure 14 is provided with a discharge opening which can be closed by a valve 50. The valve opens under the influence of excess pressure, which is effective in the inner container 10 and / or in the space 48. It closes automatically as soon as there is pressure equilibrium. Such a valve is described in EP-B1-0 190 169.

To empty the packaging, it is pressed together more or less manually in the manner customary for squeeze bottles. In the first phase of emptying, that is to say when the inner container 10 is still completely or almost completely full, the forces which are applied manually by compressing the outer container 12 may also act directly on the inner container 10, so that the latter is also directly acted upon manually. Whether this occurs and to what extent will also depend on the ratio of the volume of the unloaded outer container 12 to the volume of the filled inner container 10 and thus on the volume of the space 48 between the inner container 10 and the outer container 12. In any case, when the outer container is squeezed, the air in space 48 experiences an increase in pressure due to the resulting reduction in volume of the outer container, since space 48 is hermetically sealed to the outside and valve 46 is only at a negative pressure in space 48, i.e. in the direction of flow from the outside into room 48, opens. This pressure increase affects the Inner container, the area 42 thereby undergoes deformation in the sense of a reduction in volume.

Since the outer container 12 is elastically deformable, after the squeezing process has ended it returns to its original shape shown in FIGS. 1, 2 and 7, which leads to an increase in the volume and thus in the space 48 in comparison to the previous state which the packaging was compressed. This increase in the volume of the outer container 12 causes a decrease in the pressure in the space 48, this pressure dropping below atmospheric pressure if filling material had been released from the packaging during the previous squeezing process. This negative pressure has the result that the valve 46 opens and thus air flows into the space 48 until there is a balance between the atmospheric pressure and the pressure in the space 48.

The forces resulting from the pressure difference between the inner container 10 on the one hand and the space 48 on the other hand are relatively low, with the result that only the region 42 of the easily plastically deformable inner container 10, which is not supported on the inside, is deformed, whereas the region 40 due to the support by the supporting part 24 undergoes no or only an insignificant deformation in the areas between the web-like support elements. It is possible, depending on where the compressive forces of the packaging act, that the support member 24 is also deformed during the squeezing process. However, since the support part 24 is elastically deformable, after the squeezing process has ended, it will resume its original shape analogously to the behavior of the outer container 12 and, as a result, the cross section of the inner container in its region 40 will be restored to the original dimensions, i. H. bring back to that of the undeformed state.

The course of the deformation that the inner container 12 during the Emptying the packaging is described below in connection with Figures 5 and 6, which only represent an inner container 10 with support member 24.

Fig. 5 shows a state in which a small part of the filling material has already been removed and consequently the area 42 of the inner container, the contour of which is shown in dash-dot lines in the fully filled state, has already undergone a certain volume reduction, which leads to a displacement of the filling material has led into the area 40 and from there through the holder 30 to the dispensing valve 50. 5 shows in a schematic representation that in this intermediate state the easily deformable region 42, which is not supported on the inside, is somewhat compressed axially and radially. Fig. 5 also shows that with appropriate dimensioning, in particular the axial extent of the easily deformable area 42 in relation to the cross-sectional dimension in the region of the support ring 32, a deformation of the area 42 such that parts of the same are constricted and thereby enclose parts of the filling material so that they can no longer be pushed towards the discharge opening, there is no fear. This is also due to the fact that the support ring 32 always springs back into its starting position after being deformed by manually squeezing the packaging, thereby bringing the cross section of the inner container 10 back to its normal dimension. The volume of the area 42 is in any case such that the contents therein are more or less completely displaced in the direction of the area 40.

After emptying the area 42 facing away from the ring-shaped holder 30, which makes up about half the volume of the inner container, the area 42 enters the area 40 of the inner box 10 facing the ring-shaped holder 30 by squeezing the packaging, until on At the end of the emptying process, the parts assume approximately the position shown in FIG. 6. That is, that during the emptying of the area 40 of the inner container 10, which is supported by the supporting part 24 against noticeable deformation only due to the air pressure in the space 48, the area 42 of the inner container 10 penetrates into the area 40 as a kind of displacement body and displaces the filling material therein in the direction of the dispensing opening. 6 in particular shows that the support ring 32 limits the extent to which the area 42 is pushed into the area 40 and the support part 24 located therein. In fact, the support ring 32 serves in the last phase of the emptying process as a kind of abutment, around which the wall of the area 42 of the inner container 10 is pivoted or folded into the area 40. As a result, the change in shape which the inner container 10 experiences during the course of emptying takes place in a controlled manner such that no folds can form in which parts of the filling material are pinched off. Fig. 6 also shows that the packaging can be largely emptied. Possibly. parts of the contents still remaining in the neck area are within the limits that are also common and unavoidable in other packaging. The shape of the interacting parts is also important here. - From the above description of the emptying process it is further apparent that the support ring 32 generally divides the inner container 10 approximately in half - apart from the neck area, if necessary - so that it is arranged approximately halfway up the inner container. The presence of the support ring 32 also has the advantage that, after a squeezing process, the springing back of the outer container 12 into its normal shape is supported by the springing back of the support ring into its original, unstressed form, if the support ring is also in the previous squeezing process had been deformed. This also contributes to the stability of the outer container, so that it can possibly be made with a thinner wall than would be possible without the presence of the support ring. How the parts are arranged and put together depends on the respective circumstances.

The packaging shown in the drawing is expediently put together in such a way that first support part 24 and inner container 10 are joined together. The latter can, if the inner container 10 according to the representation of Figures 9 and 10 consists of two film blanks 10a, 10b, which are connected to each other via a weld 70, in such a way that the two film sections 10a, 10b with their areas that the Form neck portion 22, placed around the annular holder 30 and welded to it, wherein at the same time the weld seam 70 can also be formed, which connects the two film sections 10a, 10b to form the inner container 10. This then results in the unit shown in FIGS. 2 and 5 and 6, consisting of the inner container and the support part.

The unit produced in this way from the two prefabricated parts is then introduced into the opening 18 in the bottle neck 16 of the outer container 12, which, for example, has been produced in one piece using the blowing method. 7, the unit consisting of the support part 24 and the inner container 10 is compressed radially to such an extent that the web-like support elements 25, 26, 27, 28 and support ring 32 take up a total cross-sectional area which is not larger than that while being elastically deformed Cross-sectional area of the opening 18 in the neck 16 of the outer container 12. This inevitably also results in a corresponding compression of the inner container 10, the interior of which, if necessary, is also connected to a vacuum source which additionally contracts the inner container and thus reduces its cross-section. The negative pressure can be applied, for example, using a tool which is introduced through the opening 39 in the annular holder 30 into the support part and the inner container. This tool can also be used to axially insert the unit consisting of the support part 24 and the inner container 10 axially into the outer container 12, whereby for compressing the support part 24 in the area of its web-like Support elements can still attack a tool from the outside. 7 shows an intermediate stage of the insertion of the unit consisting of the support part 24 and the inner container 10 into the outer container 12. The compression of the web-like support elements to a cross-sectional area which is not larger than the opening in the neck presents no problems, especially since the support ring 32 is only firmly connected to two of the four web-like support elements, namely the support elements 25 and 26, so that the support ring 32, which is also made of elastically deformable plastic, can be easily brought into the shape required to insert it through the narrower bottle neck 16 into the outer container.

If the inner container, for example according to the embodiment of FIG. 11, initially as such, for. B. in one piece, manufactured and then assembled with the support member 24, the insertion of the support member into the inner container can also be done in such a way that the support member is first compressed and then inserted in the compressed state through the opening of the inner container in this. It is therefore a process analogous to that shown in FIG. 7.

In the production of the inner container 10 consisting of the two film sections 10a, 10b, as can be seen in particular in FIG. 9, the circumferential weld seam 70 can be made such that the wall of the inner container 10 in an area which is in the assembled state of the parts is located at a short distance from the end of the latter which faces away from the annular holder 30 of the support body, is provided with two opposing indentations 72 which as a result form inward projections and, as can be seen in FIGS. 2, 5 and 6, reach behind the support ring 32. These projections 72 are intended to form a certain form fit between the inner container and the support body or its support ring 32, and thus prevent the inner container from Direction is moved to the annular bracket 30.

In the exemplary embodiment shown in FIG. 12 of the drawing, in which parts which correspond to the other exemplary embodiments are provided with the same reference numerals, but each one higher by 100, the inner container 110 is provided on the inside with a circumferential bead 152, which is attached to two areas 174, for example by gluing, is attached to the wall of the inner container. The attachment of the ring only in the two areas 174 is intended to facilitate the deformation of the ring, which is also required here when the inner container is inserted into the outer container. The position of this ring is chosen so that in the assembled state of the packaging it is below the support part, not shown. The ring 152 can have the function of preventing, after the parts have been assembled, the inner container 110 or its area 142 facing away from the ring-shaped holder of the support part from moving over the region in which the support part ends in the direction of the ring-shaped holder. Normally, when the packaging is filled, the inner container, if it should assume an irregular shape when inserted into the outer container, is brought into the position and shape shown in FIG. 12 of the drawing, for example. However, the ring 152 can serve as an additional means in order to bring about the desired relative position between the outer container and the inner container from the outset even in the central region of the packaging. The ring also helps to keep the cross section of the inner container open since the ring will normally be elastically deformable. Depending on the position of the ring 152 relative to the support part, the case may also occur that the ring 152 serves as the abutment, by which the lower region 142 of the inner container 110 is pivoted and turned over into the upper region 140.

In the presence of the ring 152, the support ring is not necessary 32, so that a support member 124 can be used, as shown in Fig. 11, in which parts which correspond to those of the other exemplary embodiments are provided with the same, but by 100 higher reference numerals. The support member 124 also has only three web-like support elements 125, 126, 127, which are also slightly spread outwards in the unstressed state and are only pivoted slightly inwards by the wall of the inner container, so that they are below a certain amount in the assembled state of the parts outward bias against the wall of the inner container and tighten it a little. If, as in the case of the embodiment according to FIG. 12, the inner container 110 were provided with a ring 152, this would engage behind the free ends of the web-like support elements 125, 126, 127 and thus also bring about a certain form fit between the inner container 110 and the support part 124.

The support member 124 shown in FIG. 11 without a support ring can also be used if the inner container has no circumferential ring or other projections. It would then only be necessary to connect the inner container to at least one of the web-like support elements 125, 126, 127 near the free end thereof by gluing or welding. This could be done when the bag according to FIGS. 9 and 10 is produced, for example, at the same time as the two film blanks 10a, 10b are attached to the support body 124 and when they are tightly attached to the annular extension 154 of the holder 130.

Of course, it is also possible in the other exemplary embodiments to attach the inner container to at least one of the web-like support elements, this advantageously being done in the embodiment according to FIGS. 1-6 in such a way that the inner container 10 is attached to at least one of the two web-like support elements 25, 26 is attached by welding or gluing, which is firmly connected to the support ring 32 are. However, it is also possible to choose the other two web-like support elements 27 and 28 for this, as is indicated at 74 in FIGS. 5 and 6. It is sufficient to form the connection (s) over a small area. However, they should be close to the end of the web-shaped support elements facing away from the holder 30. In the presence of indentations 72, however, it will not be necessary to provide an adhesive or welded connection between the inner container and at least one of the support elements.

Even when using a support part according to FIG. 11, the deformation of the inner container during the course of the emptying thereof proceeds approximately in the manner described in connection with FIG. 5. The only difference - if there is no ring according to the exemplary embodiment in FIG. 12 - is that the plane by which the area 42 of the inner container is pivoted into the area 40 is not defined as clearly as when a support ring 32 is present or a ring 152.

The elements forming the support part 24, 124 can be made relatively thin-walled, since they should only be non-deformable under the influence of the slight pressure difference in the space 48 between the outer container and the inner container, but otherwise sufficient if they are deformed, for example, by manual action have to apply a large elastic restoring force. Due to the thin-walled design, the support part does not take up a large volume within the packaging, so that its presence does not lead to any appreciable enlargement of the squeeze packaging. In addition, as already mentioned, it is easily possible to adapt the support part, in particular the web-like support elements, to the contour of the packaging without special measures or additional effort being required.

The invention is not based on that shown in the drawing Embodiments limited. The support part can thus have more than four web-like support elements. The only prerequisite is that it is possible to elastically compress the entire support part to this cross-section insofar as it has a larger cross-section than the opening in the bottle neck 16 when not under force.

Deviating from the embodiment according to FIGS. 1 and 2, the ventilation valve for the interior 48 can also be arranged in the closure 14. In Fig. 8 an embodiment is shown which establishes the connection between the interior and the ventilation valve located in the closure 14. Parts in FIG. 8 which correspond to the exemplary embodiment according to FIGS. 1-8 are provided with the same, but by 100 larger reference numerals. The annular holder 130 is also adapted in terms of its outer dimensions to the dimensions of that part of the outer container which receives the holder 130. However, the holder 130 is provided with longitudinally extending groove-shaped recesses 160, which are connected to groove-shaped recesses 162 on the side of the flange 134 facing the end face of the neck of the outer container. At the other end, the groove-shaped recesses open into the area of the interior which is delimited on the inside by the extension 154 of the annular holder 130, so that the connection to this interior is established here. With the neck of the outer container, the recesses 160, 162 delimit channels via which the space 48 located between the outer container and the inner container can be connected to the atmosphere. For this purpose, the closure 14 must be provided with a ventilation valve. With regard to the design of the closure required for this purpose, reference is made to the already mentioned EP-B1-0 190 169.

Claims (25)

Crushed packaging provided with a dispensing opening, which has an elastically deformable outer container (12) with an opening (18), an inner container (10; 110) with an opening (39; 139) arranged inside the container and holding the filling material, and a closure (14 ) with a dispensing valve (50) for the filling material, the dispensing valve (50) preventing pressure equalization between the inner container (10; 110) and atmosphere through the entry of air into the inner container (10; 110) even after the filling material has been dispensed, and the inner container ( 10; 110) under the action of a pressure difference between atmospheric pressure and the gas pressure in the space (48) between the outer container (12) and the inner container (10; 110) is easily deformable and a ventilation valve (46) is provided, via which the between the inner container ( 10; 110) and outer container (12) located space (48), which is airtight from the outside atmosphere, connected to the outside atmosphere w can be earthed, characterized in that the inner container (10; 110) has two areas (40, 42; 140, 142), which are arranged one behind the other along its longitudinal extent, and the area (40; 140) of the inner container (10; 110) facing the discharge opening is provided with a support part which supports it essentially radially and at least the area (42; 142) of the inner container facing away from the discharge opening is of bag-like, flexible design and under the action of a pressure difference between atmospheric pressure and the gas pressure in the space (48) between outer container (12) and inner container (10; 110), displacing the the contents contained in it are easily plastically deformable in the direction of the discharge opening and the supporting part (24; 124) is elastically deformable in such a way that it resumes its original shape when the squeezing force ceases, but does noticeably deform under the influence of a pressure difference between atmospheric pressure and the gas pressure in the space between the outer container (12) and inner container (10 ; 110) not experienced, and the support part (24; 124) is provided with at least three web-like support elements (25, 26, 27, 28; 125 - 127) which are located in the area of the opening (18) of the outer container (12). located substantially annular holder (30; 130) in the direction of the end of the squeeze packaging facing away from the opening (18) up to approximately the end of the area (42; 142) of the inner container (10; 110 ) which area (42; 142) under the action of a pressure difference between atmospheric pressure and the gas pressure in the space (48) between the outer container (12) and inner container (10; 110) slightly displacing the contents contained in it towards the discharge opening is plastically deformed, and in the operating position of the parts the web-like support elements (25 - 28; 125 - 127) at their end facing away from the annular holder (30; 130) in a plane transverse to the longitudinal axis of the squeeze packaging a bottle che define which is greater than the cross sectional dimension of the opening (18) of the outer container (12), and the entirety of the cross sectional areas of the web-like support elements (25-28; 125-127) is not larger than the cross-sectional area of the opening (18) of the outer container (12). Crushed packaging according to claim 1, characterized in that the support part (24; 124) having the web-like support elements (25 - 28; 125 - 127) is adapted to the contour of the outer container (12) receiving the support part. Crushed packaging according to claim 1, characterized in that the supporting part is arranged inside the inner container (10; 110). Crushed packaging according to claim 3, characterized in that at least one of the web-like support elements (27, 28; 125-127) is under an outward bias. Crushed packaging according to claim 1, characterized in that that the inner container (10; 110) at its end facing the discharge opening is tightly connected to the cross-sectionally annular holder (30; 130) which supports the web-like support elements (25-28; 125-127). Crushed packaging according to claim 1, characterized in that the cross-sectionally annular holder (30; 130) for the web-like support elements (25-28; 125-127) is provided at its free end with a circumferential flange (34), the outside diameter of which is larger than the inside diameter of the opening (18) of the outer container (12), this flange (34) resting on the end face of the edge delimiting the opening of the outer container (12). Crushed packaging according to claim 1, characterized in that at least one (25, 26) of the web-like support elements (25 - 28) at its end, which is turned away from the holder, is connected to a support ring (32) made of elastically deformable material which in the operating position of the parts essentially perpendicular to the longitudinal axis of the squeeze packaging, and in the operating position of the parts the web-like support elements (25-28) with the support ring (32) at their end remote from the annular holder (30) in a plane transverse Define an area to the longitudinal axis of the squeeze packaging that is larger than the cross-sectional dimension of the opening (18) of the outer container (12), and the totality of the cross-sectional areas of the web-like support elements (25 - 28) and the total cross-sectional area of the support ring (32), which are at compressed support elements (25-28), is not greater than the cross-sectional area of the opening (18) of the outer container s. Crushed packaging according to claim 7, characterized in that two of the web-like support elements (25, 26) are connected to the support ring (32) and these two web-like support elements (25, 26) are arranged offset from one another by 180 °. Crushed packaging according to claim 7, characterized in that the support ring (32) has a shape which is adapted to the inner cross-sectional shape of the outer container (12). Crushed packaging according to claim 8, characterized in that in the case of a non-circular cross-sectional shape of the inner container (10) the two web-like support elements (25, 26) connected to the support ring (32) are arranged approximately in the plane parallel to the longitudinal axis of the inner container (10), in which the shorter axis of the non-circular cross-section runs. Crushed packaging according to claim 7, characterized in that there is at least one web-like support element (27, 28) which is not firmly connected to the support ring (32). Crushed packaging according to claim 11, characterized in that the end region of the at least one longitudinal web-like support element (27, 28) facing the support ring (32) is adapted to the support ring in such a way that a positive connection between the support ring and the web-like connection not connected to it is made Support element (27, 28) results. Crushed packaging according to claim 11, characterized in that the at least one web-like support element (27, 28) which is not connected to the support ring (32) projects outward from the support ring in the unstressed state and in the operating position of the parts through the inner container (10) and / or the outer container (12) is pressed against the support ring (32) until it abuts. Crushed packaging according to claim 1, characterized in that the support ring (32) or the ring (132) is arranged at that end of the region (42) of the inner container (10) which faces the discharge opening and which (42) is exposed to a pressure difference between atmospheric pressure and the gas pressure in the room (48) between the outer container (12) and the inner container (10) undergoes plastic deformation while displacing the contents contained in it in the direction of the discharge opening. Crushed packaging according to claim 1, characterized in that the inner container connected to the annular holder is in one piece. Crushed packaging according to claim 1, characterized in that the inner container (10; 110) is provided on the inside with at least one projection (72; 152) which is preferably arranged near the end of the support part (24; 124) facing away from the discharge opening. Crushed packaging according to claim 16, characterized in that the at least one projection (72) engages behind the support ring (32). Crushed packaging according to claim 16, characterized in that the inner container (10) consists of at least two film sections which are welded together. Crushed packaging according to claim 18, characterized in that the at least one projection (72) is formed by the course of at least one weld seam (70). Crushed packaging according to claim 1, characterized in that the inner container (110) is provided with a circumferential ring (152). Crushed packaging according to claim 19, characterized in that the ring (152) is connected to the inner container (110) at two points. Crushed packaging according to claim 1 or 7, characterized in that the inner container (10) with at least one of the web-like support elements (25-28) is connected at least at its end facing away from the opening (39) and / or the support ring (32) by welding or gluing. Crushed packaging according to claim 1, characterized in that the ventilation valve, via which the space (48) located between the inner container and the outer container can be connected to the atmosphere, is arranged in the closure (14) which has the dispensing valve (50). Crushed packaging according to claim 1, characterized in that there is at least one passage (160, 162) between the annular holder (130) of the support part (124) and the wall of the outer container in the region of its opening, which is the one between the inner container and the outer container connects the room with the ventilation valve located on the closure. Crushed packaging according to claim 1, characterized in that the wall of the inner container is composed of at least two layers of different materials.

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