EP3755456B1 - Container with multiple chambers for storing and mixing a multicomponent liquid coating or gluing system - Google Patents

Description

The invention relates to a multi-chamber container for storing and mixing a multi-component liquid coating or adhesive system with a first chamber for a first mixture component and at least one further chamber for a further mixture component, the first chamber and the at least one further chamber being liquid-tight from one another by at least one partition are separated, wherein the at least one partition wall comprises a pierceable partition layer, and with a piercing element for piercing the pierceable partition layer, in such a way that the first and the one further mixture component mix in the first or at least one further chamber. The present invention also relates to a system for applying a coating or an adhesive and a method for mixing a multicomponent liquid coating or adhesive system.

Multi-chamber containers of the type mentioned are known from the prior art. For example, they are used together with paint spray guns for automotive refinish paints. In the case of one-component paints, these are simply filled into a cup-like container or made available in this, which is placed on the paint spray gun. If two-component paint systems are used, the components must first be mixed before being applied by the spray gun. Usually this is done manually. Systems in which the two components are stored separately from one another in different chambers of a cup that can be screwed onto the paint spray gun have proven to be particularly expedient. The partition between the chambers is destroyed for the purpose of mixing the components before the painting process, so that the components flow into one another and mix. The mixture can then be applied immediately afterwards by means of the spray gun.

Typical two-component paint systems include a binder as the first component and a hardener as the second component. Examples of such paint systems are polyurethane paints with an isocyanate-containing and an isocyanate-reactive, e.g. hydroxyl-containing component, and epoxy paints with an epoxy-containing and an epoxy-reactive, e.g. amine component.

A generic multi-chamber system of the type described above is from US2009 / 0188987 A1 known. Here, two (in one embodiment also three) chambers are arranged one above the other in a common cup-like container and are provided with a separating film spatially separated from each other. To mix the paint components, the separating film is pierced with a mandrel so that the paint components mix with one another in the lower chamber. In practice, it has been found to be disadvantageous with this principle that the film barrier, due to its flexibility, shows a rather undefined behavior when it is pierced, so that a defined destruction of the barrier often does not succeed in the desired form.

Another multi-chamber container for storing and mixing a multi-component liquid coating or adhesive system is from the WO2010 / 084140 A1 known. The multi-chamber container disclosed in this publication comprises a flexible bag made of a liquid-tight material, which is spanned by an articulated frame. Due to the centrally arranged hinge, the bag can be divided into two separate partial volumes into which the two mixture components can be filled. To mix the components, the frame is stretched so that the liquids run into one another and mix. The mixture can then be applied via a valve at the edge and introduced into a spray gun, for example. Due to the flexible structure, this variant of a multi-chamber container has advantages in terms of waste disposal, but overall it is too mechanically sensitive. Furthermore, the spatial separation of the mixture components is not optimal for the purpose of a long shelf life as possible. Furthermore, the wall thicknesses of the flexible bag materials are rather small, so that a significant swelling or even instability must be expected for solvent-based paint systems. If, on the other hand, foil composites with a metal foil, for example an aluminum foil, are used to prevent swelling, the user cannot visually check the lacquer materials to ensure that they are in perfect condition before use.

the DE 35 45 614 A1 in turn discloses a cartridge consisting of two containers that can be connected to one another for a two-component mass which is used in particular in construction. The partitions arranged in the connecting area of the containers are removed immediately before or after connecting the containers. The two components are then mixed and the resulting, reactive mixture of the components can be pressed out of the containers through the mouthpiece by means of a plunger.

Based on the prior art discussed above, the present invention is based on the object of providing a multi-chamber container for storing and mixing a multi-component liquid coating or adhesive system, with which on the one hand safe storage of the mixed components and on the other hand simple and safe feasible mixing process is possible and which also allows a simple discharge of the mixture.

The object is achieved according to the invention with a multi-chamber container for storing and mixing a multi-component liquid coating or adhesive system according to the preamble of claim 1 in that the at least one further chamber is arranged coaxially in the outer container, the first chamber also being an outer container is formed, wherein the at least one further chamber in the outer container is designed as a cup-shaped insert, wherein the separating layer is partially formed in the partition, wherein the piercing element is hollow, in particular cylindrically hollow, and has at least two longitudinally offset openings for introducing one of the first or the further mixture component into the chamber of the respective other mixture component, wherein the piercing element is further supported on a curved support surface which, when a force is applied above a pressure threshold, moves from a first position to a second position e passes in such a way that the piercing element is displaced from a first position to a second position during the transition from the first to the second position, the piercing element in the process penetrating the pierceable separating layer.

According to the invention, the multi-chamber container comprises a first chamber for a first mixture component and at least one further chamber for a further mixture component, the first chamber and the at least one further chamber being separated from one another in a liquid-tight manner by a partition. The number of chambers is therefore not limited, so that the multi-chamber container according to the invention is also suitable for liquid coating or adhesive systems with more than, for example, two components.

The particular advantage of the multi-chamber container according to the invention lies in the safe storage of the individual mixture components without the risk of parts of the mixture components flowing into one another if the multi-chamber container is improperly handled. This is ensured by the partition wall provided between the first and the at least one further chamber. On the other hand, the piercing element cooperating with the pierceable separating layer ensures the production of a defined fluid-conducting connection between the chambers, so that intensive mixing of the mixture components is possible. The fact that the penetrable separating layer is partially formed in the separating wall ensures that a defined penetration of the separating wall can take place at any time, since, due to the limited extent of the separating surface within the separating wall, undesired rebounding of the separating surface when penetrating by means of the piercing element is avoided. Has a partial partition furthermore the advantage that it is only exposed to low mechanical stress when moving the multi-chamber container. Thus, the forces acting on the partition wall when the container filled with liquid is shaken are greater, the larger the pierceable and thus inherently mechanically unstable separating layer. In order to prevent unintentional mixing due to vibrations, for example when the container is being transported, a smaller, non-full-area separating layer is therefore advantageous.

The separating layer is preferably formed by a film material which, on the one hand, is durable and sufficiently resistant to unintentional pressurization and the chemicals used, but on the other hand can be pierced easily and precisely by the piercing element. Suitable foil materials are metal foils such as aluminum foils, plastic foils made of ABS, CA, COC, CTA, E / P, ETFE, FEP, PA, PAEK, PAN, PBT, PC, PCCE, PCO, PCT, PDCPD, PE (PE-C, PE-HD, PE-LD, PE-LLD, PE-MD, PE-UHMW, PE-ULD), PEC, PEEK, PESTUR, PESU, PET, PEUR, PHB, PI, POM, PP, PS, PTT, PUR , PVC, PVDF (abbreviations according to DIN EN ISO 1043-1: 2012-03). Furthermore, composite foils made of metal and plastic are preferably suitable. These combine properties such as preventing diffusion between the mixture components of the individual chambers, sealability in order to tightly bond the corresponding film materials to the material of the chamber container, as well as mechanical strength against stress caused by fluid movements in the chambers during transport of the container and easy penetrability. Corresponding film composites are known, for example, from the packaging sector for foods, for example.

According to the invention it is further provided that the at least one further chamber is arranged coaxially to the first chamber. This coaxial arrangement ensures that, for example, when using the multi-chamber container according to the invention together with an application unit for the multi-component liquid coating or adhesive system, in particular a paint spray gun, no disruptive overturning moments arise before mixing. Furthermore, coaxial arrangements can be implemented by means of particularly simple structural designs.

In this context, it is further provided according to the invention that the first chamber is formed by an outer container, the at least one further chamber in the outer container being designed as a cup-shaped insert. This also reduces the design and manufacturing effort in that the multi-chamber container is formed by comparatively few elements that can be assembled manually or by machine without any effort.

According to a further advantageous embodiment of the invention, the relative volume ratio of the first chamber for the first mixture component to at least one further chamber for the further mixture component (s) is 1: 1 to 9: 1, preferably 1: 1 to 5: 1. This takes into account the usual volumes to be mixed with one another when preparing and processing common liquid coating or adhesive systems.

According to the invention it is further provided that the piercing element is hollow, in particular cylindrically hollow, and has at least two longitudinally offset openings for introducing one of the first or the further mixture component into the chamber of the respective other mixture component. As a result, it is therefore not necessary for the separating layer to be destroyed (in an uncontrolled manner) in the vicinity of the piercing element in order to enable the mixture components to be mixed, in that one of the mixing components flows past the piercing element into the other chamber. Rather, the mixing process, in particular the mixing speed, can be precisely influenced, for example quantitatively, by the size of the openings and the internal dimensions of the piercing element. At least one of the two longitudinally offset openings is expediently arranged in the end face of the piercing element, in particular in the region of a cutting edge.

The piercing element can be made of different materials and also have different geometries. The piercing element is preferably designed in the form of a pin or rod and has a sharpened tip or circumferential cutting edge which enables the separating layer to be pierced easily and safely. The geometry of the piercing element should be designed in such a way that, regardless of the vertical position of the piercing element, complete emptying of the liquid from the upper chamber is ensured during and after the piercing and the outlet opening is not blocked.

According to the invention, the piercing element is also supported on a curved support surface, the curved support surface transitioning from a first position to a second position when force is applied, in such a way that the piercing element is displaced from a first position to a second position during the transition from the first to the second position wherein the piercing element pierces the pierceable separating layer. This enables particularly precise piercing of the separating layer and at the same time limits the movement of the piercing element in such a way that the multi-chamber container is not damaged if the piercing element is accidentally subjected to excessive force. Preferably, the curved support surface only changes from the first position to the second position when a force is applied above a defined threshold.

As mentioned, the multi-chamber container according to the invention can comprise more than two chambers. In the case of more than two mixture components, for example three mixture components, the partition between the chambers can be designed in such a way that the first chamber is separated from the second and third chambers via a common partition, a first partition section separating the first chamber from the second chamber and a second partition separates the first chamber from the third chamber. In this case, each partition wall section has a pierceable partition layer which is formed over part of the surface of the respective partition wall section and which is each pierceable with a piercing element. A piercing element can be provided for each of the second and third chambers, which pierces the respective partition wall section when actuated, so that as a result the components preferably mix in the first chamber.

Likewise, according to one embodiment of the invention, it can be provided that again with three mixture components and three chambers, one chamber is arranged between the two other chambers in such a way that, for example, the first is separated from the second chamber by a first partition and the second is separated from the third chamber is separated by a second partition. According to the invention, each of the two dividing walls has a dividing layer formed over part of the area. If the two partition walls are in alignment with one another, the partition layers of both partition walls can preferably be pierced one after the other by a single piercing element.

According to an advantageous embodiment of the invention, the separating layer, which extends partially over the separating wall, is arranged centrally in the separating wall. The partition surrounding the partition is preferably conical. This facilitates the leakage of one mixture component into the other chamber due to gravity and there the mixing of the two mixture components after the separation layer has been pierced. In order to enable the one mixture component to drain off quickly and completely, half the opening angle of the cone to the longitudinal axis of the multi-chamber container is preferably not more than 85 °, preferably not more than 80 °.

The material used to manufacture the multi-chamber container and the first chamber and / or the at least one further chamber are plastics, metals, glass, ceramics and composite materials and coated materials and combinations of the aforementioned materials. Your selection is based on the requirements resulting from the material properties of the mixing components, as well as the expected mechanical stress profile (e.g. use in a paint shop) change so that they become unusable, nor are the mixed components themselves allowed to change the material or materials so that they cannot fulfill their function as packaging for the mixed components. The selection of the materials is therefore based on simple tests, in that mixed components are stored in packaging made of the respective material and the material and mixed component are regularly checked.Plastic is preferred as the material, in particular PA, PBT, PE (PE-C, PE-HD, PE -LD, PE-LLD, PE-MD, PE-UHMW, PE-ULD), PET (abbreviations according to DIN EN ISO 1043-1: 2012-03). In order to increase the resistance of the chamber materials to, for example, solvent-based mixing components, it can be expedient to provide the plastics with correspondingly resistant coatings at least on the surfaces that are in contact with the mixing components.

The multi-chamber container and the first chamber and / or the at least one further chamber are preferably formed from a transparent or translucent material. This allows the respective filling level of the mixing components in the chambers to be determined in a simple manner. Furthermore, the penetration of the separating layer can be observed and supported, for example, by shaking the multi-chamber container.

In order to discharge the mixture formed from the mixture components from the multi-chamber container and, for example, to direct it into a spray gun, the multi-chamber container preferably has a closable outlet opening. If, according to the above, the first chamber is formed by an outer container, the at least one further chamber in the outer container being designed as a cup-shaped insert, the outlet opening is preferably provided in the outer container forming the first chamber.

According to a particularly advantageous embodiment of the invention, a catalyst capsule containing a catalyst material is arranged at the outlet opening in such a way that the mixture formed from the first and the further mixture component comes into contact with the catalyst material as it flows out. For example, the mixture formed from the mixture components can have a comparatively long processing time (pot life), so that processing does not have to take place immediately after the mixing process, which is an advantage depending on the particular application. As soon as the mixture comes into contact with the catalyst material contained in the catalyst capsule, an accelerated chemical reaction (crosslinking) takes place, which shortens the processing time, so that, for example, when the mixture is applied immediately after this, rapid curing takes place on a surface.

For this purpose, the catalyst material can be designed in the form of a catalyst bed which contains a catalyst reversibly sorbed on a substrate. A defined volume, which contains substrate and catalyst, is regarded as a catalyst bed, the catalyst not being able to leave the substrate (for example by using sieve inserts).

According to the invention, it is provided that the catalyst is reversibly sorbed on the substrate. Both adsorption and absorption can be considered here. The sorption can take place in that the substrate is impregnated with a solution of the catalyst and then the solvent is evaporated. The fact that the sorption is reversible means that a sorbed catalyst can also be given back to a liquid phase in an amount effective to catalyze the reaction. Therefore, it is also preferred that the substrate is not graphite or activated carbon.

Suitable substrates can be solid catalysts and catalyst supports, as they are known from heterogeneous catalysis. This also includes zeolites / molecular sieves such as zeolite A and zeolite X and other porous ceramics. Examples of suitable catalysts depend on the type of mixing components. For example, if a polyurethane reaction is to be catalyzed because one mixed component contains an isocyanate-containing compound and the other mixed component contains an isocyanate-reactive compound, then titanium, zirconium, bismuth, tin and / or iron-containing catalysts are preferred. Dialkyltin dicarboxylates and bismuth carboxylates are particularly preferred in this case.

The outlet opening can be closed with a simple, space-saving closure, for example a screw closure. However, when the multi-chamber container is connected, for example to a spray gun, it may be necessary to provide a valve or a separate outlet nozzle in order to ensure a controlled discharge of the mixture. To this end, according to an advantageous embodiment of the invention, it can be provided that the multi-chamber container has a recess for receiving an outlet valve, the outlet valve being connectable to the outlet opening. If the multi-chamber container is, for example, an injection-molded part, a shape of the recess adapted to the geometry of the outlet valve can readily be provided. The outlet nozzle is preferably held in this recess by means of a clamp, i.e. in a non-positive manner. This prevents the outlet nozzle from getting lost during the storage phase.

In order to ensure that the one chamber is completely emptied after the pierceable separating layer has been pierced, the piercing element can, as already mentioned, be shaped in various ways. Cylindrical rod-shaped shapes are preferred. To be precise To ensure that the separating layer is pierced, a further embodiment of the invention provides that the first chamber or the at least one further chamber has a guide for the piercing element. It goes without saying that the guide is adapted to the respective geometry of the piercing element in order to enable a preferably axial piercing movement as precisely as possible.

According to an advantageous embodiment of the invention, it can furthermore be provided that the first and / or the at least one further chamber has a closable opening for introducing a solvent. One of the openings can be identical to the outlet opening.

Another aspect of the present invention relates to a system for applying a paint coating or an adhesive comprising a multi-chamber container for storing and mixing a multi-component liquid coating or adhesive system according to one of claims 1 to 12 and an application unit, in particular a spray gun, which can be detachably connected to the multi-chamber container.

The system has a comparatively simple structure and enables the mixing components to be mixed intensively, assisted by shaking the container. In addition, the advantages mentioned above in connection with the multi-chamber container apply accordingly.

• Bereitstellen der ersten Mischungskomponente in der als äußerer Behälter ausgebildeten ersten Kammer,
• Bereitstellen der einen weiteren Mischungskomponente in der wenigstens einen weiteren Kammer,
• Durchstoßen der von der Trennwand umfassten durchstoßbaren Trennschicht mittels des hohlen, auf der gewölbten Stützfläche abgestützten Durchstoßelementes, wobei das Durchstoßelement aus der ersten Lage in die zweite Lage übergeht und wobei die erste Mischungskomponente oder die eine weitere Mischungskomponente durch das hohle Durchstoßelement in die Kammer der jeweils anderen Mischungskomponente eingeleitet wird, und
• Vermischen der ersten Mischungskomponente mit der einen weiteren Mischungskomponente, bevorzugt unterstützt durch Schütteln des Mehrkammerbehälters.

In terms of the method, the object mentioned at the beginning is achieved with a method for mixing a multi-component liquid coating or adhesive system in a multi-chamber container according to one of claims 1 to 12, comprising the following method steps:

• Providing the first mixture component in the first chamber designed as an outer container,
• Providing the one further mixture component in the at least one further chamber,
• Piercing of the pierceable partition comprised by the partition wall by means of the hollow piercing element supported on the arched support surface, the piercing element merging from the first layer into the second layer and wherein the first mixture component or the one further mixture component through the hollow piercing element into the chamber of the respective another mixture component is introduced, and
• Mixing the first mixture component with the one further mixture component, preferably assisted by shaking the multi-chamber container.

The method according to the invention can be carried out simply and inexpensively. In addition, the advantages mentioned above in connection with the multi-chamber container also apply to the method. The advantages mentioned in connection with the method according to the invention also apply accordingly to the multi-chamber container.

Coating materials, in particular lacquer and adhesives, are used as mixture components provided according to the invention, in which it is advantageous to keep two or more components separately during transport and storage and to mix them only shortly before application. Examples are coating materials in which the two components have chemical groups that are complementary to one another. Examples include -NCO and -OH, -SH and / or -NH, furthermore epoxide and amine, furthermore acceptor and donor compounds for Michael additions. The individual mixing components can also contain catalysts for the reaction of the complementary groups. Alternatively, polymerizable chemical groups can be present in one component, while corresponding initiators or activators are contained in the other component. For example, vinylic groups such as acrylates or methacrylates can be contained in one component and peroxides in the other component. The multi-chamber container according to the invention is particularly advantageous for mixed components of low viscosity. In particular, the mixed components have a viscosity below 10,000 mPas, particularly preferably below 2,000 mPas and very particularly preferably below 250 mPas. The viscosity data relate to measurements according to DIN EN ISO 3219 / A3 at 23 ° C. and a shear gradient of 100 s ^-1, measured with a Physica MCR 51 rheometer from Anton Paar Germany GmbH (DE).

It is also advantageous for mixing if the viscosity of the two mixing components is not too different. The viscosity of the more viscous component should therefore not be more than 500%, preferably 150%, particularly preferably not 50%, higher than the other component.

According to an advantageous embodiment of the invention, the volume ratio between the first mixture component in the first chamber and the one further mixture component in the at least one further chamber is 1: 1 to 9: 1, preferably 1: 1 to 5: 1.

Fig. 1

einen Mehrkammerbehälter zum Aufbewahren und Mischen eines mehrkomponentigen flüssigen Beschichtungs- oder Klebesystems in perspektivischer Ansicht,

Fig. 2

den Mehrkammerbehälter der Fig. 1 in transparenter Ausführung in perspektivischer Ansicht,

Fig. 3

der Mehrkammerbehälter der Fig. 2 in einer Explosionsansicht,

Fig. 4

den Mehrkammerbehälter der Fig. 2 in seitlichem Längsschnitt,

Fig. 5

den Mehrkammerbehälter der Fig. 2 in perspektivischer Längsschnittansicht,

Fig. 6a-c

das Mischen eines zweikomponentigen Lacksystems in einem Mehrkammerbehälter gemäß Fig. 1 oder 2,

Fig. 7

den Mehrkammerbehälter der Fig. 1 in perspektivischer Ansicht mit einem Auslaufdüse,

Fig. 8

den Mehrkammerbehälter der Fig. 1 in perspektivischer Ansicht mit einem Auslaufdüse mit integrierter Katalysatorkapsel und

Fig. 9a, b

die Verbindung eines Mehrkammerbehälters gemäß Fig. 1 mit einer Sprühpistole.

The invention is explained in more detail below with the aid of a drawing illustrating an exemplary embodiment. Show it:

Fig. 1

a multi-chamber container for storing and mixing a multi-component liquid coating or adhesive system in a perspective view,

Fig. 2

the multi-chamber container of the Fig. 1 in a transparent design in a perspective view,

Fig. 3

the multi-chamber container of the Fig. 2 in an exploded view,

Fig. 4

the multi-chamber container of the Fig. 2 in lateral longitudinal section,

Fig. 5

the multi-chamber container of the Fig. 2 in perspective longitudinal sectional view,

Figures 6a-c

the mixing of a two-component paint system in a multi-chamber container according to Fig. 1 or 2 ,

Fig. 7

the multi-chamber container of the Fig. 1 in a perspective view with an outlet nozzle,

Fig. 8

the multi-chamber container of the Fig. 1 in a perspective view with an outlet nozzle with integrated catalyst capsule and

Figures 9a, b

the connection of a multi-chamber container according to Fig. 1 with a spray gun.

Fig. 1 shows a multi-chamber container 1 * for storing and mixing a multi-component liquid coating or adhesive system M in a perspective view. The multi-chamber container 1 * comprises an outer container 1a * with a slightly conically shaped outer wall 1b *, which on the underside merges into a strongly funnel-shaped wall section 1c *. At its lower end, the multi-chamber container 1 * has an outlet opening 1d * on the underside, which in the present case is closed with a screw cap 1e *.

Fig. 2 shows the multi-chamber container 1 of Fig. 1 in a transparent version in a perspective view. With regard to the shape, the multi-chamber containers 1 *, 1 of the differ Figs. 1 and 2 not further. As in Fig. 2 As can be seen, the multi-chamber container 1 comprises a first chamber 10 for a first mixture component, for example the binder B of a 2K polyurethane paint. Furthermore, the multi-chamber container 1 comprises a second chamber 20 for a second mixture component, for example the hardener H of the 2K polyurethane varnish. The first chamber 10 and the second chamber 20 are separated from one another in a liquid-tight manner by a partition wall 30. The partition wall 30 comprises a pierceable partition layer 40, which is formed over part of the area in the partition wall 30. Furthermore, the multi-chamber container 1 comprises a Piercing element 50 for piercing the pierceable separating layer 40. This has the function of penetrating the separating layer 40 when actuated in such a way that the mixture components B, H are in either the first or the second chamber 10, 20, in the present embodiment in the first chamber 10, mix.

In the present case, the first chamber 10 is formed by the outer container 1a of the multi-chamber container 1, while the second chamber 20 is designed as a cup-shaped insert in the outer container 1a. Furthermore, the partition wall 30 with the pierceable partition layer 40 is formed by the bottom of the cup-shaped insert of the second chamber 20. As in particular in the longitudinal sectional view of Fig. 4 recognizable, the partition wall 30 is slightly curved or conically shaped. This makes it easier for the mixture component H contained in the second chamber 20 to run out completely. As mentioned, the separating layer 40 is arranged over part of the surface - and in the present case also centrally - in the separating wall 30 which forms the bottom of the cup-shaped insert. The second chamber 20 also has a cylindrical guide 21 arranged centrally in the second chamber 20 and comprising two axially aligned elongated holes 22, in which the piercing element 50 is guided, as will be described further below.

As in particular in the exploded view of the Fig. 3 As can be seen, the piercing element 50 has an essentially cylindrical shape which is adapted to the cylindrical guide 21 as part of the second chamber 20 configured as a cup-shaped insert. The piercing element 50 is hollow on the inside and has a first end opening 53, a second end opening 54 provided opposite the first end opening 53, and elongated holes 51 on the outside. The frontal opening 53 is surrounded by a cutting edge 52 with which the separating layer 40 can be pierced reliably and precisely when the penetrating element 50 moves axially in the direction of the separating layer 40. By means of the second end-face opening 54, for example, a solvent can also be added to the mixture component H of the second chamber 20, if necessary. In the pierced state of the separating layer 40, the opening 54 can also be used to add a solvent for the mixture M produced. Finally, the second end opening 54 can be closed by a closure 55, for example a screw closure.

As in the Figures 2 to 6 As can be seen, the multi-chamber container 1 has a second cup-shaped or shell-shaped insert 60 which, in the assembled state of the multi-chamber container 1, is arranged above the second chamber 20. This insert 60 has an inwardly curved base area 61 and a further central cylindrical guide 62 for the piercing element 50. According to the longitudinal sectional view of Fig. 4 the multi-chamber container 1 is closed at the top by means of a cover 63, for example in the form of a film. The piercing element 50 is over the closure 55 is supported on the curved base surface 61, which changes from a first position to a second position when a force is applied above a pressure threshold. In this case, the piercing element 50 is displaced from a first position to a second position during the transition from the first to the second position and in the process pierces the pierceable separating layer. At the same time, the axial displacement of the piercing element 50 is limited.

In connection with the Figures 6a-6c the mixing process is explained below. According to Figure 6a the first chamber 10 is partially filled with a first mixture component B, in this case the binding agent of a 2K polyurethane varnish, while the second chamber 20 in the form of a cup-shaped insert in the correct proportion to the first mixture component with a second mixture component H, in this case the hardener of the 2K -Polyurethane varnish, is filled. The piercing element 50 is in its starting position, in which the cutting edge 52 is arranged directly above the pierceable separating layer 40, which is central with respect to the separating surface 30, and the elongated holes 51 of the piercing element 50 are arranged axially offset from the elongated holes 22 of the cylindrical guide 21. The piercing element 50 is closed at its frontal opening 54 with a closure 55, the top side of which also serves as an actuating surface for the piercing element 50.

By corresponding pressure on the closure 55, the piercing element is moved axially in the direction of the separating layer 40, the cutting edge 52 precisely penetrating the separating layer. The axial movement is limited in that the curved surface 61 of the second cup-shaped insert 60, preferably by means of a snap movement from the rest position, in which the curved surface 61 is curved inward relative to the second cup-shaped insert 60 ( Figure 6a ), to an operating position in which the curved surface 61 is curved outward ( Figure 6b ), transforms.

The elongated holes 51 of the piercing element 50 and the elongated holes 22 of the cylindrical guide 21 begin to align, so that a fluid-conducting connection is created between the second chamber 20 and the inner volume of the hollow piercing element 50, as in FIG Figure 6b recognizable, the second mixture component H flowing into the inner volume of the piercing element 50. At the same time, as a result of the perforation of the separating layer 40 (see Sect. Figure 6b ) also established a fluid-conducting connection between the inner volume of piercing element 50 and the first chamber 10, so that the second mixture component H flows into the first chamber 10 and mixes with the first mixture component B. The mixing effect can be intensified by shaking the multi-chamber container 1 accordingly.

In Figure 6c Finally, the multi-chamber container 1 is shown in the first chamber 10 with the mixture M consisting of binder B and hardener H, which react with one another to produce the 2K polyurethane paint. The second chamber 20 is completely emptied, which is favored by the slightly conical shape of the partition wall 30.

Fig. 7 shows the multi-chamber container of Fig. 1 in a perspective view with a separate, screw-on outlet nozzle.

Fig. 8 shows a particularly advantageous embodiment in which the separate, screw-on outlet nozzle 70 comprises an annular catalyst capsule containing a catalyst material. This makes it possible for the mixture M formed from the first and second mixture components B, H to come into contact with the catalyst material as it flows out, as a result of which a faster chemical reaction takes place, with which the processing time of the mixture M is shortened, so that curing For example, the 2K polyurethane paint is accelerated after application.

the Figures 9a and 9b show the connection of a multi-chamber container according to Fig. 1 with a spray gun S. The spray gun S can be of conventional design and operated with compressed air.

Claims (13)

1. Multichamber vessel (1, 1*) for storing and mixing a multicomponent liquid coating or adhesive system (M) having a first chamber (10) for a first mixture component (B) and at least one further chamber (20) for a further mixture component (H), where the first chamber (10) and the at least one further chamber (20) are divided from one another in a liquid-tight manner by at least one dividing wall (30), where the dividing wall (30) comprises a penetrable dividing layer (40), and having at least one penetrating element (50) for penetrating the penetrable dividing layer (40) in such a way that the first and the one further mixture components (B, H) mix in the first or the at least one further chamber (10, 20),
   where the at least one further chamber (20) is arranged coaxially relative to the first chamber (10), where the first chamber (10) further takes the form of an outer vessel (1a, 1a*), where the at least one further chamber (20) is designed as an insert in the form of a cup in the outer vessel (1a, 1a*), where the dividing layer (40) forms part of the area of the dividing wall (30), where the penetrating element (50) is in hollow form, especially hollow cylindrical form, and has at least two longitudinally offset openings (51) for introduction of one of the first or further mixture components (B, H) into the chamber (10, 20) of the respective other mixture component (H, B), where the penetrating element (50) is further braced on a curved brace surface (61) which moves from a first location to a second location when a force above a pressure threshold is exerted, in such a way that the penetrating element (50) is moved from a first position to a second position at the transition from the first to the second location, where the penetrating element (50) penetrates the penetrable dividing layer (40).
2. Multichamber vessel (1, 1*) according to Claim,
   characterized in that the volume ratio between the first chamber (10) for the first mixture component (B) and the at least one further chamber (20) for the further mixture component (H) is 1:1 to 9:1, preferably 1:1 to 5:1.
3. Multichamber vessel (1, 1*) according to Claim 1 or 2,
   characterized in that the dividing layer (40) is arranged centrally in the dividing wall (30),
4. Multichamber vessel (1, 1*) according to any of Claims 1 to 3,
   characterized in that the dividing wall (30) surrounding the dividing layer (40) is in conical form.
5. Multichamber vessel (1, 1*) according to any of Claims 1 to 4,
   characterized in that the multichamber vessel (1, 1*) and the first chamber (10) and/or the at least one further chamber (20) are formed from a transparent or translucent material.
6. Multichamber vessel (1, 1*) according to any of Claims 1 to 5,
   characterized in that the multichamber vessel (1, 1*) has a closable outflow opening (1d, 1d*) for the mixture (M) formed from the first and further mixture components (B, H).
7. Multichamber vessel (1, 1*) according to Claim 6,
   characterized in that a catalyst capsule (70) containing a catalyst material is disposed at the outflow opening, in such a way that the mixture (M) formed from the first and further mixture components (B, H) comes into contact with the catalyst material as it flows out.
8. Multichamber vessel (1, 1*) according to Claim 6 or 7,
   characterized in that the multichamber vessel (1, 1*) has a recess for accommodation, especially in a force-fitting manner, of an outflow nozzle (70), where the outflow nozzle is connectable to the outflow opening (1d, 1d*).
9. Multichamber vessel (1, 1*) according to any of Claims 1 to 8,
   characterized in that the first chamber (10) or the at least one further chamber (20) has a guide for the penetrating element (21) .
10. Multichamber vessel (1, 1*) according to any of Claims 1 to 9,
    characterized in that the first and/or the at least one further chamber (10, 20) has a closable opening (54) for introducing a solvent.
11. System for deploying a paint coating or an adhesive, comprising a multichamber vessel (1, 1*) for storing and mixing a multicomponent liquid coating or adhesive system (M) according to any of Claims 1 to 10, and a deployment unit, especially a spray gun (S), releasably connectable to the multichamber vessel (1, 1*).
12. Method of mixing a multicomponent liquid coating or adhesive system in a multichamber vessel (1, 1*) according to any of Claims 1 to 10, comprising the following method steps:

    - providing the first mixture component (B) in the first chamber (10) designed as the outer vessel (1a, 1a*),

    - providing the one further mixture component (H) in the at least one further chamber (20),

    - penetrating the penetrable dividing layer (40) encompassed by the dividing wall (30) by means of the hollow penetrating element (50) braced on the curved brace surface (61), where the penetrating element (50) moves from the first location into the second location and where the first mixture component (B) or the one further mixture component (H) is introduced through the hollow penetrating element into the chamber (10, 20) of the respective other mixture component (H, B), and

    - mixing the first mixture component (B) with the one further mixture component (H), preferably assisted by agitation of the multichamber vessel (1, 1*).
13. Method according to Claim 12,
    characterized in that the volume ratio between the first mixture component (B) in the first chamber (10) and the one further mixture component (H) in the at least one further chamber (20) is 1:1 to 9:1, preferably 1:1 to 5:1.

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