EP1718541B1 - Dual or multi-chamber tube - Google Patents

Abstract

A multi-chamber tube package which comprises a first tube chamber having a tube nozzle channel extending from a tube shoulder and terminating in an outlet, and a second tube chamber having a tube nozzle channel terminating in an outlet adjoining the first outlet. The tube nozzle channels enable the dispensing of the multiple preparations from the chambers. The nozzle channels lead to an outlet where the first preparation and the second preparation meet and coalesce to form a common strand. The two channels and the chambers associated with them have a defined ratio to each other. One nozzle channel may be subdivided into one or more parallel branches and/or the nozzle channels may have orifice rims or edges which lie on different planes.

Description

The present invention relates to a multi-chamber tube according to the preamble of claim 1. This is particularly a two-chamber tube, comprising an outer tube tube (tube jacket) with a tube neck mounted on a tube shoulder, which opens into an outlet, wherein a first chamber with a first preparation and another Chamber is filled with a second preparation, wherein in the tube neck provided for the passage of the first preparation of the first passageway and a second passage provided for the passage of the second passage are arranged, the passageways open in the outlet, wherein in the outlet, the first preparation and the second preparation to a common strand come together.

Two-chamber or multi-chamber tubes are already known in the prior art, wherein in principle two Ausführungsforrrien are familiar. In the first particularly simple embodiment, two tubular tubes are inserted into one another, the inner tube with its tube head being inserted in the passageway of the outer tube. The two tubes of this "tube-in-tube" are welded or folded together at their end. The two tubes define an inner and an outer chamber, with the chambers opening into the common head or exit region. In another embodiment, a tubular tube is divided by a dividing wall into two adjacent chambers ("side-by-side"). Also in this form, the through channels are designed so that the two separate in the chambers compositions come together only in the mouth area at the end of the tube neck. The two preparations emerge together from the tube as soon as pressure is exerted on the outer tube. The design of the outlet determines in which striped pattern the preparations emerge from the tube. In this case, known commercially available tubes have the same partial volumes of the various chambers and form this ratio in a corresponding mixing ratio, in particular of 50:50, in the outlet.

For products whose two phases must be stored separately and whose mixing ratio differs from the conventional value of 50:50, the known tubes are not suitable. Although sometimes even multi-chamber tubes were known with different chamber volumes, so it was so far hardly possible to reproduce the mixing ratio in the expressed strand. Thus, multicomponent products are still offered in separate containers when the components are to be mixed in an unequal ratio. This makes handling the product relatively uncomfortable for the user.

Another disadvantage of the known tubes is that the preparations unintentionally mix in the exit area without the user pressing on the tube. Occasionally, the tubes are provided with a tamper-evident closure, such as a peelable foil, which suppresses mixing prior to first use. At least after the first use, however, the mixing of the two components can hardly be prevented by the known screw caps. This mixing initially adversely affects the aesthetic impression of the product. If the two components have different colors, as is known, for example, from toothpastes, a smudged beginning always appears on the toothbrush first, before the stripes in the toothpaste strand stand out in color. Another problem is that the compositions chemically contaminate each other, which has unpleasant consequences for aggressive components.

The problem of mixing depends strongly on the nature of the components. Thus it can be observed that in particular direct-pulling Dyes or precursors of nature-analogous dyes are characterized by a particularly high degree of diffusion readiness (creep resistance). In such cases, the mixing is not limited to the exit area, but the dye diffuses from one chamber to the other chamber, so that the composition contained therein is permanently contaminated. This diffusion can not be prevented by the usual sealing closures that are screwed onto the head, even at high torque applied.

Due to the tendency to mix, the shelf life of these products is also severely limited. Thus, it has been found that with storage for several weeks, a diffusion of the components over the common exit area despite tightly screwed lid can not be prevented. The known, before the first use to be deducted and serving as tamper evident films in multi-chamber tubes because of the design of the outlet are hardly suitable because they can not reliably apply sealing.

A generic tube is from the US 2003/0106905 known.

The object of the present invention is first to provide a multi-chamber tube, which is simple and inexpensive to produce and which is suitable as a reliable and storable dispenser for two-phase products. It is also the object of the invention to provide such a multi-chamber tube, which has any but fixed mixing ratio. Regardless, it is a further object of the invention to modify the multi-chamber tube so that the risk of mixing the components in the outlet area and the diffusion is reduced from chamber to chamber.

These objects are achieved by multi-chamber tubes with the characterizing features of claim 1. Particular embodiments of the tube are described in the subclaims.

A first basic idea is to provide the volumes of the individual chambers in a ratio that differs from the previously known uniform distribution. The invention is intended to include any unequal distribution of volumes that has a significant difference. To ensure a mixture corresponding to the ratio of the chamber volumes in the expressed strand To be able to, the exit area is designed accordingly. Thus, the ratio of the chamber volumes is reflected in the cross sections of the through channels, which open in the outlet. In this case, a through-channel can be divided into one or more parallel branch channels. Then, the cross sections of the branch channels added to the cross section of the passageway. It should be noted that it is advantageous for the function of the multi-chamber tubes if the different components present in the chambers each have approximately the same viscosity.

The advantage of the design according to the invention is that the chambers filled with different volumes can now be expressed relatively evenly until emptying of the residue and the product expressed has the same mixing ratio almost constant. In this case, such tubes can be relatively easily finished and filled with the known methods. It can serve as a safe and comfortable container for a sensitive multi-component product.

A particularly preferred field of application of such two-chamber tubes is the range of colorants and / or tinting agents for keratinic fibers, in particular for human hair. Because of their chemical formulations, these agents require mixing ratios that differ from the uniform distribution. Especially for these two-component agent, the two preparations can be assembled separately from each other in a two-chamber tube according to the invention. At this point will be the registrations DE 103 59 538.4 . DE 103 59 557.0 and DE 103 59 539.2 , all of which originate from the applicant of this application and all have the filing date of 17.12.2003. These documents describe fillings for two-chambered tubes, the preparation intended for one chamber containing at least one substantive dye and / or at least one precursor of a naturally-analogous dye, while the preparation intended for filling the second chamber contains at least one care substance.

For the ratio of the volumes and thus the outlet for the preparations, a range between 1: 2 and 5: 1, preferably 2: 1 to 3: 1, indicated, wherein the 1: 1 ratio should be excluded. In addition, a preparation with at least one oxidation dye precursor and for the filling of the second chamber a preparation with at least one oxidizing agent or a care substance is described as filling for the one chamber, wherein the ratio of the volumes and thus the outlet for the preparations in a range between greater than 1 : 1 and 3: 1.

To obtain the formulation-related mixing ratios and for even product discharge, geometries of the tube openings are advantageous, which have a mixing ratio not equal to 50:50, namely from 80:20 to 60:40, preferably from 75:25. The ratio of 75:25 from outside tube to inside tube is advantageous in the case of a color pigmented phase and a conditioner at a volume of 100 ml. From an aesthetic point of view, the outer tube and / or the inner tube can be made transparent.

In view of the fact that for a tinting agent, the proportion of the color preparation about 75% and the proportion of care preparation can make up about 25% and therefore the color preparation in the case of a "tube-in-tube" is advantageously introduced into the outer tube with the larger volume , It is particularly advantageous if the shoulder region of the outer tube is reinforced with rounds, which have particularly good barrier properties. Thus, a diffusion of the dye can be excluded from the shoulder area. In order to prevent the diffusion as effectively as possible, it is advantageous to incorporate into the material of the tube shoulder aluminum or a suitable plastic, such as PTB.

As already mentioned, a general problem of multi-chamber tubes is that the components mix in the exit area and that components diffuse into one another via the common exit area, so that mixing occurs in the chambers. In order to prevent leakage of the mixture during storage and to ensure the integrity of the tube to consumers, it may be advantageous at a mouth region with relatively simple geometry, for example in the case of two coaxial cylinders, the discharge opening with a tamper-evident closure, such as aluminum - or plastic film, to be sealed by the consumer before the first use Will get removed. However, such a tamper-evident closure is, as stated, difficult to assemble and also can not prevent the components from mixing after the first use. In particular, the dyes mentioned here have a relatively high creep or diffusibility.

The problem of unwanted mixing is by no means limited to the multi-chamber tubes with different chamber volumes, but occurs in all multi-chamber tubes, even those with the same volume. In this respect, another general idea of the invention is to make the closure region of the multi-chamber tubes so that the risk of mixing is drastically reduced. This problem is solved by the fact that the mouth edge of the first passage channel opposite to the mouth edge of the second passage channel on a different level. Thus, one of the orifice edges is above or behind the other with respect to the exiting strand and forms a barrier to the composition that is in the lower-lying orifice-edge chamber. Finally, the level created by the raised mouth edge can hardly be overcome by the composition. It thus acts as a kind of "diffusion brake".

It should also be emphasized at this point once again that the idea of laying the mouth edges of the through-channels to different levels, not limited to multi-chamber tubes with different sized chamber volumes, but is a useful for any Mehrkammertube invention. Of course, the two described and actually independent objects of the multi-chamber tube with different chamber volumes and the multi-chamber tube with level difference of the mouth edges can be combined in any way.

This has the particular advantage that the mixture of the components can be greatly reduced. This advantage initially pays off in the storage of the multicomponent products, the packaged products being characterized by a high storage stability in terms of mixing and / or diffusion. Thus, once the aesthetic requirements of consumers can be met, which in the case of differently colored components now at the first use and even after the first use can perceive a clear separation of colors. The unsightly smearing of the components in the region of the tube head remains largely spared them. In addition, sometimes because of the chemical reactivity of advantage, to avoid the mixing. This is particularly true when the two components react together to form a possibly less stable, volatile or aggressive end product.

The increased storage stability could be confirmed in experiments. Thus, it has been found that dyes do not diffuse as assumed through the wall of the inner tube and then lead to the distribution at the inner tube edge, but that the diffusion takes place via the common outlet region. This diffusion is greatly reduced by the staggered muzzle edges.

There are various design options to realize the stepped mouth edges in the tube head. A particularly simple and thus advantageous type of implementation is to form the separate chambers as separate tubes, each with its own passage. Starting from the tube shoulder, the through-channels are designed in different lengths. When the tubes are then collected in the tube neck by placing them side by side in a common holder, as is known from "side-by-side" tubes, or simply plugged into each other as in "tube-in-tube" tubes, then results in a difference in level of the mouth edges because of the different length of the through channels. It is advantageous if, in the case of the "tube-in-tube" arrangement, the through-channel of the inner tube is arranged coaxially with the through-channel of the outer tube and protrudes somewhat further. Thus, the diffusion in the direction from the outer to the inner tube is almost suppressed. An advantage of the invention in the case of the "tube-in-tube" tubes is that it no longer matters to the tolerances that inevitably occur when the tubes are inserted one inside the other. Advantageously, care is taken in the design of the level difference that this is greater than the maximum possible tolerance.

In principle, any kind of distribution of the chambers within the common tube is possible. In the "side-by-side" tube, the two individual chambers are arranged side by side in an outer shell, while the o.g. "tube in tube" has an inner tube which is completely surrounded by an outer tube. This embodiment is characterized by a constant dosage of the two preparations.

Of course, it is particularly advantageous if the composition whose diffusion is to be avoided, for example the component mixed with intense color pigments, is provided in the chamber whose mouth edge is at a lower level.

If in the context of this invention is spoken by a level difference, this is greater than the usual in the manufacturing process tolerances, which can make up a size of one tenth of a millimeter. Differences in level according to the invention have a size of at least 0.3 millimeters, preferably more than 0.5 millimeters and more preferably more than 1.0 millimeters. Thus, despite the manufacturing tolerances, a diffusion-inhibiting level difference can be ensured. In the present case, a level difference of about 1.5 millimeters can form. Level differences of more than about 3 millimeters prove to be impractical especially in the present multiple tubes.

The two-chamber tube according to the invention is preferably made of a material that is suitable for the packaging of tinting and coloring agents of this type. It should be noted that due to the oxidation properties of the product, the barrier properties of commercially available plastic tubes are only limited sufficient. As a material is suitable for the direct dyes or their precursors, as well as for oxidizing agents and oxidation dye precursors, an aluminum laminate or pure aluminum, with pure aluminum tubes are only partially used because of their mechanical properties. Aluminum laminate is understood here as an aluminum layer coated with multilayer plastic. As very particularly preferred according to the invention, a tube has proven in which both the inner tube and the outer tube are made of aluminum laminate. For the less aggressive preparations, tubes made of plastic laminate (PE, PET, PP) or Kunststoffxextrudaten (PE, PET, PP) with barrier layers, such as EVOH conceivable. Moreover, in one embodiment, the material of the inner tube can be selected independently of the material of the outer tube. As already mentioned, it may be advantageous for reasons of an attractive design to manufacture the outer tube but also the inner tube made of transparent plastic.

In the case of the multi-chamber tube designed according to the invention, a special significance attaches to the closure. This is designed as a screw cap, the inner sleeve, as known from such screw caps, the outlet seals. In the present case, it is advantageous if at the bottom of the inner sleeve, a seal is applied, which has a thickness of several, for example 3 millimeters and which consists essentially of a foam. This is covered against the outlet with glued paper and then an aluminum foil. This seal is suitable for the mouth edges to press into the material so that the through channels are sealed. In order to limit the contact pressure, it is advantageous if the torque with which the cap is screwed on is limited. For this purpose, an edge is provided on the inner diameter of the sleeve, which protrudes above the internal thread. When the cap is screwed on, this edge rests on a shoulder which surrounds the outlet at the front.

Although the invention should in principle not be restricted in any way with regard to this exit pattern, it may be preferred according to the invention if the first preparation exits as the main strand and the second preparation forms a plurality of colored strips running along this main strand. Also with regard to the number of strips, the invention should not be limited. A number of two to four stripes may be particularly preferred according to the invention for application or optical reasons. With the strips, the product can be aesthetically enhanced. In this case, in a first embodiment, the first preparation form the strips, while the second preparation forms the main strand and in a second embodiment the second preparation form the strips, while the first preparation forms the main strand. Advantageously, however, it is too Make sure that the colored preparation is stored in the chamber with the mouth edge at the lower level.

In a further embodiment, it may be preferred for the two preparations to form, in particular proportionally, the main strand together next to one another. In a further embodiment, the outlet strand can consist of an inner region, formed from a first preparation, and an outer region, formed from the second preparation, wherein the preparations also form the outlet strand according to their arrangement in the tube.

Figur 1

einen Schnitt durch eine Zweikammertube,

Figur 2

verschiedene Querschnittsgeometrien des Auslass,

Figur 3

eine Draufsicht auf den Kopf einer Zweikammertube,

Figur 4

einen Schnitt durch den Kopf einer Zweikammertube,

Figur 5

einen Ansicht des Kopfes einer Zweikammertube,

Figur 6

Tubenköpfe mit variierenden Mischungsverhältnissen,

Figur 7

eine offene Zweikammertube mit Niveauunterschied der Mündungsränder und

Figur 8

eine erfindungsgemäße geschlossene Zweikammertube mit Niveauunterschied der Mündungsränder.

The invention is described below with reference to the accompanying FIGS. 1 to 8 explained in more detail. Show it:

FIG. 1

a section through a two-chamber tube,

FIG. 2

different cross-sectional geometries of the outlet,

FIG. 3

a top view of the head of a two-chamber tube,

FIG. 4

a section through the head of a bicameral tube,

FIG. 5

a view of the head of a bicameral tube,

FIG. 6

Tube heads with varying mixing ratios,

FIG. 7

an open two - chamber tube with level difference of the muzzle edges and

FIG. 8

a closed two-chamber tube according to the invention with level difference of the mouth edges.

FIG. 1 shows a section through the upper part of a two-chamber tube. This is designed in the manner of "tube-in-tube" and suitable for two reactive preparations, which are stored in separate chambers in a common tube. The mixing, respectively the confluence, of the two preparations happens only at the application. The two-chamber tube has an outer tube tube 1 with a tube shoulder 2 formed thereon and an outer through-channel 3. The outer tube tube 1 forms as outer tube a first chamber 21 for a preparation A. This first outer chamber 21 coaxially surrounds a tubular Innentube 4, which forms a further chamber 22 for a preparation B, wherein the Innentube 4 in turn has an inner tube shoulder 5 with a corresponding inner passageway 6. The Innentube 4 is inserted into the outer tube tube 1 and held on not shown locking lugs in the outer passage 3. Webs 7 form a stop when inserting and ensure the distance of the tube shoulders 2 and 5, so that a passage to the passage channel 3 remains. The passageways 3 and 6 open into a common outlet.

In the passage 3 of the inner passageway 6 arranged therein forms a release agent, which allows a first separate promotion of the preparations A and B at a pressure on the tube. After the separate promotion, the preparations unite in the area of the outlet before the discharge opening and leave them in a common strand. In this case, outer tube and inner tube are formed by tubes, which are closed at their rear end by means of a common fold.

Already in the FIG. 1 It can be seen that the outer wall 6a of the inner passage channel 6 is formed star-shaped. Different geometries for the walls of the inner through-channel 6 are in FIGS. 2a to 2i shown. In the embodiments according to FIGS. 2a, 2c, 2d, 2h and 2i, the cross-sectional area 9 of the star, which may have three or four points, defines the size of the partial flow for the preparation B located in the inner tube (hatched). On the other hand, the gussets 11 remaining between the outer wall 8 of the inner through-channel and the round outer wall 10 of the outer through-channel define the branch streams for the preparation located in the outer tube. The size of the partial stream for the second preparation A is determined by the sum of the branch streams.

The two chambers 21 and 22 have different volumes, which are in a predetermined relationship to each other. According to the invention, the through channels produce two partial streams with at least almost the same ratio, wherein one of the partial streams, such as, for example, according to 2 a or 2 c can be divided into a plurality of parallel branch streams. In order to produce a visible stripiness of the leaked product stream from all viewing angles, the embodiment according to FIG. 2c is particularly preferable. With the geometries 2a to 2i shown, orifice variants can be produced which form mixing ratios of at least 60:40 and preferably 75:25. The maximum achievable difference is around 80:20.

FIG. 3 shows a plan view of the head of a two-chamber tube, wherein clearly the cross-sectional geometry can be seen in the exit region in front of the discharge opening. This corresponds approximately to the example according to 2c. Shown is a Ronde made of plastic, which forms a tube shoulder 16, on which the neck 17 is formed. On the edge 18, in particular made of aluminum laminate outer tube tube is welded. FIG. 4 shows a section through the Ronde after FIG. 3 , To recognize the tube head 12 of the inner tube, which is firmly inserted into the tube head 13 of the outer tube. In this example, the mouth edge 19 of the outer tube is at the level of the mouth edge 20 of the inner tube. The passageways 3 and 6 are clearly visible. The shoulder region 16 of the outer tube is reinforced in this case by an incorporated plastic layer, which has particularly good barrier properties against the diffusion of dyes. FIG. 5 shows a view from below through the Ronde FIG. 3 and FIG. 4 , Evident are the webs 7, which bear against the shoulder 16 from the inside.

In FIG. 6 It is shown how can be adjusted by modification of the outer wall 8 of the inner passage channel on the one hand, the mixing ratio and on the other hand, the width of the strip and thus the visual impression. In the FIGS. 6a to 6c in each case an outer wall 8 is shown in star shape, wherein the star has three peaks each. The width of the tips 14 defines the width of the strips in the expressed strand. From the geometry of the tube head according to FIG. 6 a, a mixing ratio of 60:40 results in the three-part cross-sectional area 11 of the outer passageway to the cross-sectional area 9 of the inner passageway. The tube head according to FIG. 6b has a mixing ratio of about 75:25 with relatively narrow strips. The head of Fig. 6c shows deeper curves of the walls 8, whereby wider stripes are nevertheless produced at a smaller mixing ratio of about 73:27. The latter two conditions are suitable for two-chamber tubes, which serve as a donor for a tinting agent with about 75% color content and 25% care content. By modification of the walls of course any mixing ratios and any strip designs can be displayed.

The embodiment according to FIG. 6d shows a tube head, which realizes a cylindrical inner strand 15 within the likewise cylindrical outer strand 25. The mixing ratio can be set arbitrarily over the diameter of the inner strand. This embodiment is particularly suitable if the outer strand 23 is formed by a transparent preparation, while the inner strand forming preparation is colored.

In FIG. 7 now is a section through an open two-chamber tube with a difference in level of the mouth edges shown. It is a "tube-in-tube", as described above. The first passage 24 of the tube has a mouth edge 26 and the second passage 27 a mouth edge 28. It can be seen that the level of the mouth edge 26 with respect to the tube shoulder 30 is well below the level of the mouth edge 28. The level difference is designated 29. The double tube shown in this figure is particularly suitable for the exception of colored tinting agents. In this case, the component mixed with color pigments is stored in the chamber 31 formed by the outer tube. The level difference 29 is sufficient to prevent the diffusion of the color pigments from the passage 24 through the exit area into the passageway 27.

The inner tube forms the chamber 32 and contains a care substance. The tube head of the outer tube is in turn formed by a head piece 33 to which the tube 34 of the outer tube is attached. The shoulder area is reinforced with an inlay 35. The Innentube in turn has a head piece 36, the geometry of the Through channels forms. At the head piece 36, the tube 37 of the inner tube is formed. The hoses 34 and 37 are sealed together at the end, not shown, and thus closed. The head piece 36 is inserted into the through-channel 24 and latched via locking lugs 38 which engage in a groove 39. Webs 40 in turn ensure the distance. Already at this point, attention is drawn to the paragraph 41, which is provided at the upper end of the neck and on which an in the screw cap located edge hangs when screwing the cap.

FIG. 8 now shows the multi-chamber tube according to the invention in the form of a "tube-in-tube" FIG. 7 but with screwed-on screw cap 42. The screwing of the screw cap 42 is made possible by a thread of the known type. Inside the double-walled screw cap 42, an inner sleeve 43 is provided, which seals the outlet. At the bottom of the sleeve is a gasket 44 having a thickness of several millimeters and consisting essentially of a foam which is covered against the outlet with live paper and thereon an aluminum foil. It can be seen that the mouth edge 28 presses into the seal 44, while the seal 44 rests on the mouth edge 26. So the passageways are tightly closed. At the inner diameter of the sleeve 43, an edge 45 is provided, which protrudes above the internal thread. This edge 45 settles when screwing the cap on the shoulder 41 ( FIG. 7 ), which surrounds the outlet end face. So a limitation of the torque is given. In addition, it is ensured that the skirt 46 of the screw cap 42 is not pressed onto the tube shoulder.

Claims (14)

1. A multi-chamber tube, in particular a dual chamber tube, having an outer tube conduit (1) with a tube neck (17) resting on a tube shoulder (2, 16, 30), which opens into an outlet, wherein a first chamber (21, 31) may be filled with a first preparation (A) and a further chamber (22, 32) may be filled with a second preparation (B), wherein a first passage channel (3, 24) provided for the passage of the first preparation and a second passage channel (6, 27) provided for the passage of the second preparation are arranged in the tube neck (17), wherein the passage channels in the outlet each have a mouth encompassed by a mouth edge (19, 20, 26, 28), where the first preparation and the second preparation converge together into a common strand, with a level difference (29) between the mouth edge (19, 26) of the first passage channel (3, 24) and the mouth edge (20, 28) of the second passage channel (6, 27) with respect to the tube shoulders (2, 16, 30), wherein at least the portion of the mouth edge, which lies between the first and second passage channel, protrudes over the remaining mouth edge, characterized by a screwed plug (42) in which a seal (44) is incorporated wherein the mouth edge (28) is embedded with a higher level into the material of the seal (44) by about the level difference (29), while the seal (44) sealably lies on the mouth edge (26) with a lower level.
2. The multi-chamber tube according to claim 1, characterized in that the level difference (29) amounts to at least 0.3 millimeter and preferably to more than 0.5 millimeter and more preferably to more than 1.0 millimeter.
3. The multi-chamber tube according to claim 1 or 2, characterized by an inner tube (4), which is plugged into the passage channel (24) of an outer tube, wherein the passage channel (27) of the inner tube (4) protrudes by the level difference (29) over the mouth edge of the passage channel (24) of the outer tube.
4. The multi-chamber tube according to any of claims 1 to 3, characterized in that the composition, the diffusion of which should be avoided, in particular the component mixed with intense color pigments, is provided in the chamber (21, 31), the mouth edge (19, 26) of which lies at a lower level.
5. The multi-chamber tube according to any of claims 1 to 4, characterized in that the volumes of the chambers (21, 22, 31, 32) are different and are in a determined ratio relatively to each other, wherein the cross-sections of the passage channels (3, 6, 24, 27) have an at least almost corresponding ratio, wherein a passage channel (3, 6, 24, 27) may be divided into one or several parallel branch channels.
6. The multi-chamber tube according to claim 1, characterized in that a stop (41) is provided, which limits the torque upon screwing on the screwed plug (42).
7. The multi-chamber tube according to any of the preceding claims, characterized in that the outer tube conduit (1) forms an outer tube, which surrounds coaxially a pipe-shaped inner tube (4), wherein the inner tube (4) has an inner passage channel (6), wherein the inner passage channel (6) is plugged into the passage channel (3) and wherein the outer wall (8) of the inner passage channel (6) forms a separator.
8. The multi-chamber tube according to any of the preceding claims, characterized in that the outer wall (8) of the inner passage channel (6) is formed with the shape of a star, wherein the cross-sectional surface of the star defines the partial current for the preparation located in the inner tube (4) and wherein the remaining crotches (11) between the outer wall (8) of the inner passage channel (6) and the round outer wall (10) of the outer passage channel (3) define branch currents for the preparation located in the outer tube (1).
9. The multi-chamber tube according to any of the preceding claims, characterized in that the outer tube and inner tube (4) are formed from pipes (1, 4, 34, 37), which are secured at the rear end by means of a common fold.
10. The multi-chamber tube according to any of the preceding claims, characterized in that the outer tube and/or the inner tube (4) is made out of an aluminium foil coated with plastic, in particular an aluminium laminate or out of plastic laminates.
11. The multi-chamber tube according to any of the preceding claims, characterized in that the outer tube and/or the inner tube (4) are made out of transparent plastic.
12. The use of a multi-chamber tube according to any of the preceding claims, in such a way that the preparation (A) provided for filling said one chamber contains at least one substantive dye and/or at least one precursor of nature-analogue dye and the preparation (B) provided for filling the second chamber contains at least one care material.
13. The use of a multi-chamber tube according to any of the preceding claims 1 to 11, so that the preparation (A) provided for filling said one chamber contains at least one oxidation dye precursor and the preparation (B) provided for filling the second chamber contains at least one oxidation agent.
14. The use of a multi-chamber tube according to any of the preceding claims 1 to 11, so that the preparation (A) provided for filling said one chamber contains at least one oxidation dye precursor and the preparation (B) provided for filling the second chamber contains at least one care material.

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