JPH08276125A - Assembly of mixer and many reactive component dispenser and matching-bonding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent reactive components from being contaminated with one another and to realize optimal mixing efficiency of each reactive component in an assembly of a mixer and a multi-reactive component dispensing device. SOLUTION: The mixer 25 comprises a mixer housing 26, a mixer inlet section 27 having inlets 28, 29 for using as outlets of cartridges and a group of mixer elements 3. The mixer inlet section 27 having separating elements 3S and the group of mixer elements 3 are arranged so that the inlets 28, 29 of the mixer remain aligned with the corresponding and matching outlets of the cartridges, the separating elements 3S and dividing elements 3D of the group of mixer elements 3 while hermetically connecting the mixer 25 to the cartridge for optimizing the mixing of chemical components. The cross- contamination of the components is prevented by providing bayonet lugs 10 cooperated with bayonet prongs of the cartridge on the housing 26 for connecting the mixer and hindering the rotations of the inlet section 27, the dividing elements 3S and the group of mixer elements 3 with respect to the outlets while the housing 26 is rotated.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a mixer and a multi-reactive chemical component dispenser according to the preamble of claim 1.
The present invention relates to an engaging device, in particular to an assembly with a two-component cartridge, and a method of matching the mixer to a dispensing device.

[0002]

There are a number of mixers and cartridges that have means for mounting and coupling the mixer to the cartridge. For example, US-A-47
According to 67026 or US-A-4538920,
The mixer has two locking locking lugs that can be inserted into the corresponding plug-in lugs of the cartridge. The rotary lock movement causes contamination of one component by the other at the interface between the cartridge and the mixer. These components are transferred from one outlet to the other, respectively, from one inlet to the other, causing an unwanted reaction between the components at the interface between the cartridge and the mixer, and finally its Such reactions are carried back into the outlet of the cartridge, thus leading to plugging of the outlet.

US-A-5228599 describes a multi-component dispensing cartridge in which a mixer is joined with the aid of a connecting nut having an internal thread, each storage cylinder terminating in a dispensing opening forming a common outlet. It is disclosed that the entrance of the is not specified. The mixer is placed on the cartridge and is fixed by the connecting nut screwed onto the male screw of the cartridge.

DE-A-9405922 discloses a two-component cartridge in which the containers are arranged concentrically but the outlets are arranged next to one another and are D-shaped. Two sleeves are coupled to the mixer for better drainage of the residue. However, these sleeves do not prevent cross-contamination of the two components during engagement and disengagement of the mixer with the cartridge.

In addition, the components tend to have more rapid reactivity for faster end use, which may cause problems with the material of manufacture of the packaging, its separation wall from one part of the packaging to another. It creates problems with drug transfer through and therefore undesired chemical reactions inside the packaging.

Cartridges separated by a single wall, such as those described in US Pat. No. 5,333,760, cannot exclude drug migration through such a single wall separation barrier, and thus separation if the chemical reaction at the cartridge outlet is Not sufficient if it occurs during storage in the cylinder.

[0007]

SUMMARY OF THE INVENTION An assembly of a mixer and a multi-reactive component distributor and a method of matching and combining the mixer and the multi-reactive component distributor based on the prior art. It is an object of the present invention to provide a method for preventing cross-contamination while at the same time achieving optimum mixing efficiency by keeping the reactive components well separated from the cartridge outlet into the mixer. This object is achieved by the assembly of the mixer and the multireactive component distributor as defined in the independent claims and the method of coupling the mixer to the cartridge.

Another object of the present invention is that, in front of the cylinder piston, where the chemical agent is contained,
It is to provide a cartridge that ensures complete drug separation along the entire length during storage up to the tip of the outlet where the closure device is installed. This object is achieved by the cartridge according to claim 10.

The invention will be explained in more detail below with reference to the drawings of an embodiment.

[0010]

1 shows a mixer 1 with a mixer housing 2, a group of mixer elements 3, a mixer outlet 4 and a mixer inlet part 5 in a first embodiment. This mixer is fixed to the cartridge 12 with the help of a connecting ring 6. Particularly from FIG. 2, the mixer inlet part 5 has two D-shapes in front of the mixer separating element 3S which in this embodiment serve as separating means for separately guiding each component to the first dividing element 3D of the mixer element group 3. It can be seen that the individual inlet openings 7, 8 are formed into Slot 9
Aligns the mixer 1 with respect to the cartridge 12.

As in this case and in all other similar mixer embodiments which do not have separate chambers, the separating element 3S of the mixer element group has a front edge 20 (see FIG. 1) with two inlets. The next element, which is aligned with the plane separating the two and is the first splitting element 3D, is at 90 ° to it to split the two component streams evenly for optimal mixing. is there.

At the mixer inlet end facing the cartridge, the connecting ring 6 (see FIG. 5) is provided with two bayonet protrusions 10 and, in addition, to the outer cylindrical surface for a better gripping by hand. It has a plurality of ribs 11.

In the cartridge 12, (see FIGS. 3 and 4 only the outlet area is shown) it comprises two containers 13 and a bayonet bar 15 for receiving the bayonet barb 10 of the mixer 1. And a connecting flange 14. Two separate side-to-outlets 16, 17 are provided in the discharge tube 18, which cooperates with a slot 9 at the inlet of the mixer 1 to align the mixer 1 with the cartridge 12. Have 19. The side-to-outlets 16, 17 of the cartridge 12 are two D-shaped individual inlet openings 7, formed by the leading edge 20 of the separating element 3S of the mixer 1.
Match 8 The cylindrical mixer inlet portion 5 is formed so as to be hermetically coupled to the discharge pipe 18 of the cartridge 12 by being fitted to the tip piece 19 of the cartridge 12.

When the mixer 1 is connected to the cartridge 12, both chemical component streams leaving the side-to-outlet 16, 17 of the cartridge 12 are separated by the first mixer separating element 3S so that the chemical component streams are on one side. It is important to note that it is not possible to traverse from the outlet 16 to the other side outlet 17. Mixer element group 3
The leading edge 20 of the separating element 3S facing the cartridge discharge tube 18 is pressed against the surface between the two side-to-outlets 16, 17 or fits in a groove 21 to ensure the separation of the components. To Thus, the separation of the components is maintained until they reach the first splitting element 3D of the mixer element group 3.

When the mixer 1 is connected to the cartridge 12, the tip piece 19 of the cartridge 2 can fit only in the slot 9 of the mixer inlet section 5. This coded coupling method guarantees not only a single matchability but also an axial mixer coupling without rotation, thereby preventing contamination of one chemical component at the side-to-outlet 16, 17 with the other chemical component. . The plug-in projection 10 of the connecting ring 6 enables a quick connection of the mixer 1.

FIGS. 6A to 6C show FIGS.
Which is a modification of the embodiment shown in FIG.
Shows a variation in which the container 70 with the outlet 16A has a smaller cross-sectional area than the container 71 with the outlet 17.
Also, the mixer inlet section 22 has a separating means in the mixer 73, and a separate inlet chamber 23 having a different cross-sectional area and a total diameter smaller than the cartridge outlet,
With 24. This alternative separating means may have a plurality of separated inlet chambers having an equivalent cross sectional area or a cross sectional area other than 1: 1. For example, the ratios of the cross-sectional areas of the separated inlet chambers may be adapted to their respective dosage ratios with respect to the cross-sectional area of the container of the cartridge 72. In this embodiment, the separating device is fixed to the mixer element group.

FIG. 7 shows, in a second embodiment, a mixer housing 26, a group of mixer elements 3, a mixer outlet 4 and a mixer inlet portion 27, which are two cylindrical separate inlets 2.
8 shows a mixer 25 with 8 and 29, which further comprises a separating element 3S of a mixer element group 3 following the separated inlet. The mixer 25 is also connected to the cartridge 30 with the help of the connecting ring 6. The connecting ring 6 is the same as or similar to the connecting ring of the first embodiment and has an insert projection 10. In this embodiment, all mixer internal components are integral with the properly aligned mixer element group 3.

The cartridge 30 has an air gap L (see FIG. 8).
And FIG. 9), two cylindrical containers 31 of equal cross-section substantially separated by an outlet surface 32 with two bayonets 15 for receiving the bayonet 10 of the connecting ring 6. Have. The exit surface 32 of the cartridge 30 is 2
Has two separate outlets 33, 34 which match the respective inner diameters of the inlets 28, 29 of the separated mixers 25, so that the inlets 28, 29 of the mixer 25 are the two outlets of the cartridge 30. It can be fitted to seal them. Also in this embodiment, the outlet of the cartridge 30 and the inlet of the mixer 25 are separated so that the chemical components cannot cross from one outlet (inlet) to the other outlet (inlet). There is. Such a configuration where the mixer outlet fits into the cartridge outlet results in
The diameter of the mixer inlet portion 27 will be smaller than in the reverse configuration where the cross-flow area at the cartridge outlet is the same.

By providing a single cartridge for all containers, each cylindrical, separated by an air gap L between them, the chemicals are contained in front of the cylinder piston and all the way to the tip of the outlet. Along the substantially entire length of the flow, all chemical separation is guaranteed and maintained in the mixer inlet section until the first split element 3D of the mixer element group 3 is reached.

However, the invention is not limited to containers separated by an air gap, but applies equally to cartridges with containers separated by a single wall according to FIG.

The separate inlets 28, 29 (see FIG. 10) of the mixer 25 terminate in two separate inlets 36 which reach the separating element 3S. The matching coupling method of the mixer 25 to the cartridge 30 is the axial direction, and the mixer element group 3
The same as that without said rotation of the separating means integrated with.

11A to 11C, the containers 76, 77 of the cartridge 78 have different cross-sectional areas and are also separated by the air gap L (see FIGS. 11B and 11C). 7 shows a modification of the embodiment shown in FIGS. 7 to 10. Inlet part 3 of mixer 40
7 is similar to the mixer inlet portion 27 of FIG. 7, whereby the independent inlets 28, 29 terminate in separate inlet chambers 38, 39 of different cross-sectional areas to accommodate different cartridge volume ratios, respectively. And is accommodated with a relatively small diameter with respect to the mixer inlet section 37 and terminates in the discharge opening of each chamber for passing material. This configuration is preferred but not limited to mixing ratios other than 1: 1. Separated outlets 33,3
4. The independent inlets 28,29 can also be of different cross-sectional areas corresponding to the different cross-sectional areas of the cartridge containers 76,77.

FIG. 12 shows, in a further embodiment, a mixer 41 having a mixer housing 42, a mixer element group 3, a mixer outlet 4 and a mixer inlet section 43, which mixer inlet section 43 is suitable for the mixer element group 3. With separate inlets 48, 49 leading to separate chambers 48A, 49A fixedly coupled to the separating element 3S aligned with. This mixer 41 presses it against the cartridge, and the mixer element group 3 and the separated chambers 48A, 49
By rotating the mixer housing 42 of the mixer 1 without rotating A, it is coupled to the cartridge 50. The mixer housing 42 comprises a plurality of longitudinal ribs 44 terminating in a flange 45, the two lateral ends of the flange 45 at which the insertion lug 1 of the cartridge 50 lies.
5 is formed as a plug-in projection 46 cooperating with 5. The inner wall of the mixer inlet section 43 is stepped and the separate chambers 48A, 49A are provided with a sealing flange 53.

Mixer element group 3 is a separate chamber 48A, 49
Combined with A. The sealing flange 53 is arranged in the mixer housing 42 so that the mixer housing 42 itself can be rotated around the group of mixer elements 3 together with the associated separating device and the associated separate inlets 48, 49. The sealing flange 53 seals between the mixer inlet portion 43 and the mixer housing 42 containing the mixer element group 3.

The cartridge 50 comprises two cylindrical containers 5
1 and in the present embodiment, it has a coupling flange 52 with two plug-in projections 15 for receiving the plug-in projections 46 of the mixer 41. The stepped outlet nozzles 54 of the cartridge 50 are two separate and spaced D-shaped side-to-side outlets 55, 56 which are separated inlets 48, 56 of the mixer 41.
49 to match the outer shape of each of the
8 and 49 have the ones fitted into the outlets 55 and 56 to seal them. Also, in this embodiment the cartridge outlets 55, 56 and the pre-aligned inlet 4 of the mixer 41 are
Both 8 and 49 are axially bonded such that no direct chemical flow or contact between the bonds can occur across the bond from one outlet to the other and vice versa.

15 to 17 show a modification of the embodiment shown in FIGS. 12 to 14 in which the containers 79, 80 of the cartridge 81 have different cross-sectional areas. Mixer 5
The mixer inlet portion 57 of 8 is a separated inlet 59 and an inlet opening 60 which are separated chambers 5 having different cross-sections within a reduced diameter compared to the mixer inlet portion 57.
9A and 60A are terminated. This configuration is preferred for mixing ratios other than 1: 1 but is not limited to them. For mixing ratios other than 1: 1 it is preferable to omit the main component inlet 49 entering the mixer inlet 57 in order to match the cross-section of the channel to the mixing ratio.

A recess 47 is formed on one longitudinal side between the insertion protrusions 46.
(See FIG. 16), one of the insertion protrusions 15 is provided with the mixer 5 for the cartridge 81 on one side thereof.
8 has a tip 82 for cooperating with the recess 47 for coded alignment.

All other coding means, possibly fitted to the dispensing device or cartridge and to the accessory device, for coding alignment of the accessory device to the dispenser device or cartridge, eg pins, recesses or cavities or slots. A kind of protruding part is arranged.

To couple the mixer 58 to the cartridge 81, the mixer 58 is such that the tip 82 fits into the recess 47 in the flange of the mixer 58 and the inlet of the mixer 58 fits into the outlet of the cartridge 81. Aligned and pressed against 8. When the mixer 58 is in place and the outlet and inlet are mated, the mixer housing 42 of the mixer 58 is rotated 90 ° so that the spigot 46 engages the spigot 82 of the cartridge 81. This method allows for rapid coupling of mixer 58 while preventing relative rotation at the mixer / cartridge interface, thereby preventing contamination of one chemical component by another.

18 and 19 show a cartridge 30.
A preferred embodiment is shown in which the separated outlets 33 and 34 are integrated together and further comprises a fully cylindrical container substantially separated by an air gap L. The mixer 83 has a mixer housing 84, as well as a mixer inlet portion 85 with spaced apart inlets 87, 88 integrated with a separating element 3S coupled to the mixer element group 3 terminating at the mixer outlet 4. The mixer housing 84 comprises ribs 86 terminating in a plug-in projection 89 which cooperates with the plug-in projection 15 in the cartridge 30. Separated inlets 87, 88 of the mixer 83 are separated outlets 33 of the cartridge 30,
Mating with 34.

This mixer 83 feeds it to the cartridge 30.
Fixed to the cartridge 30 by pressing against and rotating the mixer housing 84 of the mixer 83, but with the inlets 87, 88, the separating element 3S, and the first dividing element 3D separated at this time. The element group 3D does not rotate. In this embodiment, the first dividing element 3
Separate chambers terminating in D may also be provided.

All the embodiments described above are compact, as a result of which the entire inlet part with the separating means and the mixer elements is made in one piece, which results in molding and assembly costs. Lower. The integral construction of the internal components ensures proper alignment and thus provides optimum mixing efficiency.

In situations in which a relatively long group of mixer elements is used and the rotational friction between the group and the mixer housing can cause problems, some or all of the mixer elements may be located within the housing. It is preferably assembled in a stationary manner and thus separates some or all of the mixer elements from the separator in the inlet part so that they rotate during coupling of the mixer to the cartridge. In this case-and as seen from the mixer inlet to the mixer outlet-the front edge of the first element of the mixer element group, or of that part fixedly assembled in the housing, is the housing for coupling the mixer to the cartridge. Each material flow leaving the separating means, or the first group of elements coupled to the separating means, after being rotated, is fixedly assembled in the leading edge of the first element of the group of elements or in the housing. Part of the
Must be assembled in a pre-aligned position so that accurate alignment is achieved so that it is evenly divided for optimal mixing efficiency.

Obviously, instead of the embodiment having D-shaped inlets and outlets, cylindrical, profiled or unequal sized inlets and outlets are possible. Moreover, the same principles can be used for dispensing devices or cartridges that dispense more than two components.

As a corollary of the above description, the mixer and cartridge assembly according to the invention allows diffusion of possible chemical reactions, especially for cartridge containers substantially separated by air gaps to individual outlets. And ports of the same or different size without rotation causing cross-contamination, while maintaining separation through the intermediate surface and into the mixer to prevent plugging of components at the intermediate surface and back to the cartridge outlet ( port-to-mouth coded matching for The assembly also allows, but not exclusively, optimization of mixing performance for ratios other than 1: 1.

While the above description of the cartridge embodiment and the drawings relate to a multi-component cartridge having side-by-side containers, the teachings of the present invention are not so limited and may be arranged and formed in concentric containers or otherwise. It is likewise applicable to a cartridge with a container having opposite outlets or outlets separated from one another.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a first embodiment mixer of the present invention having a connecting ring.

2 is a top view of the inlet end of the mixer of FIG.

FIG. 3 is a side view of the outlet portion of the cartridge of the first embodiment having outlets facing each other.

FIG. 4 is a top view of an outlet portion of the cartridge shown in FIG.

5 is a top view of the coupling ring of FIG.

FIG. 6 shows a variant of the mixer of the first embodiment with different separating means and a cartridge with two containers with different volumes, (A) of this variant with a connecting ring. Sectional drawing of a mixer, (B) the side view of the outlet part of the cartridge which has an outlet which faces each other, and (C) the top view of the outlet part of the cartridge of (B).

FIG. 7 is a cross-sectional view of a second embodiment mixer of the present invention having a connecting ring.

FIG. 8 is a side view of the outlet portion of a cartridge with outlets spaced apart from each other.

9 is a top view of the outlet portion of the cartridge of FIG.

FIG. 10 is a top view of the inlet end of a mixer with a connecting ring.

FIG. 11 shows a variant of the mixer of the second embodiment, having a separating device and a cartridge with two containers with the device having different volumes and outlets separated from one another,
(A) is a cross-sectional view of the mixer of the present modified embodiment, (B) is a side view of an outlet portion of a cartridge having outlets separated from each other, and (C) is a top view of the outlet portion of the cartridge of (B). .

FIG. 12 is a partial sectional view of a mixer according to a third embodiment of the invention with a rotatable mixer housing and a side view of the outlet part of a cartridge with outlets facing each other.

13 is a top view of the outlet portion of the cartridge of FIG.

14 is a top view of the inlet end of the mixer of FIG.

FIG. 15: FIG. 1 with two containers with different volumes
The partial cross section figure which shows the modification of the mixer of 2nd Example.

16 is a top view of the inlet end of the mixer of FIG.

17 is a top view of the outlet portion of the cartridge of FIG.

FIG. 18 is a partial sectional view of a mixer according to a preferred embodiment of the present invention.

FIG. 19 is a top view of the outlet portion of the cartridge in the embodiment shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 mixer 2 mixer housing 3 mixer element group 3D dividing element 3S mixer separating element 4 mixer outlet 5 mixer inlet part 6 connecting ring 9 slot 10 insertion protrusion 11 rib 12 cartridge 13 container 14 coupling flange 15 insertion protrusion 16 side-to-outlet 17 Side-to-outlet 19 Tip piece 20 Front edge 21 Groove

Claims (14)

[Claims] 1. A mixer and multi-reactive component distributor, especially 2
An assembly of component cartridges, wherein the mixer (1, 25, 40, 41, 58, 73, 83) is a mixer housing (2, 26, 42, 42A, 84) and a mixer element group (3). And independent inlets (7,8; 28,29; 48,49; 5 for each outlet of the cartridge)
6,60; 87,88) with a mixer inlet portion (5,
22, 27, 37, 43, 57, 85) and the cartridge (12, 30, 72, 78, 50, 81)
Has at least two containers (13; 70, 71; 31; 7
6, 77; 51; 79, 80) and independent outlets for each container (16, 17; 16A, 17A; 33, 34;
55, 56) and an exit area with a mixer (6, 10; 4) for cooperating the mixer and the cartridge.
6, 89; 15) installed in the mixer (1, 25, 40, 41, 58, 73, 83)
Mixer inlet part (5, 22, 27, 37, 43, 5
7, 85) separate means (3S; 23, 24; 3) for maintaining separation of the components across the independent inlet.
8, 39; 48A, 49A; 59A, 60A),
The mixer element group (3) and the inlet portion (5, 22, 2)
7, 37, 43, 57, 85) for hermetically coupling the mixer to the cartridge and for the inlet of the mixer inlet portion (7, 8; 28, 29; 48, 49; 59,
60; 87, 88) with corresponding mating outlets (16, 17, 16A, 17A; 33, 34; 3) of said cartridge
8, 39; 48A, 49A; 59A, 60A) and maintain said alignment state and said separating means (3S; 23,
24; 38, 39; 48A, 49A; 59, 60A)
Is configured to be aligned with the first splitting element (3D) of the mixer element group (3) after mounting the mixer assembly. And the assembly. 2. The mixer according to claim 1, wherein the separating means (3S; 23, 24; 38, 39; 48A, 4).
9A; 59A, 60A) and the mixer inlet section (5, 22, 27, 37, 4) including the mixer element group (3).
3, 58, 85) in which the components are aligned and fixedly connected to each other. 3. The mixer according to claim 1, wherein the mixer element group (3) of the mixers (41, 58, 83).
And the inlet portion (43, 57, 85) are configured to allow rotation between the inlet portion and the group of elements, or a portion of the group of elements, whereby the mixer inlet The leading edge of the first element of the group of elements, or that portion not fixedly coupled to the inlet portion, after the rotation required to couple the mixer assembly, as viewed from the mixer outlet to the mixer outlet. Is for the inlet part,
Or with respect to the element group portion coupled to the inlet portion,
A mixer, characterized in that each material stream is matched to divide evenly for optimum mixing efficiency. 4. The mixer according to claim 1, wherein the first element (3) of the mixer element group (3) when viewed from the mixer inlet to the mixer outlet. 3S) is arranged to act as a separating means for maintaining the separation of said components. 5. The mixer according to any one of claims 1 to 3, wherein the mixer inlet portion (22,
37, 43, 57) the plurality of separated chambers (23, 24; 38, 39; 48A, 49A; 59) where the separating means reach the first dividing element (3D) of the mixer element group (3).
A, 60A). 6. The mixer according to claim 1, 2, 4, or 5, wherein the mixer housing (2,
26), the mixer element group (3), and the mixer inlet portions (5, 22, 27) are fixedly coupled to each other, and the distributor or cartridge (12, 30, 72) is connected via a connecting ring (6). , 78) attached to the mixer. 7. A mixer as claimed in any one of claims 1, 2, 4 and 5 wherein the mixer housing (42, 42A, 84) is the mixer during coupling of the mixer to the distributor or cartridge. Of the mixer element (3) and the mixer inlet portion (43, 57, 8) so that it can rotate around the fixedly coupled inner parts of
5) is the mixer housing (42, 42A, 84)
A mixer characterized in that it is fixedly coupled and arranged inside. 8. A mixer according to claim 3, wherein the mixer housing, which comprises a fixedly assembled group of mixer elements (3) or a portion thereof, is coupled to the mixer or the cartridge while the mixer housing is coupled to the distributor or cartridge. A mixer, characterized in that it can rotate around said mixer inlet part, which is not fixedly assembled in the mixer housing, the separating means and, if appropriate, the other part of said group of elements. 9. The multi-reactive component dispenser according to claim 1, wherein the outlet (3) of the cartridge (30, 78).
3, 34) are independent and individual, are arranged or spaced apart from each other and are generally D-shaped or cylindrical, or have different cross-sections. Distribution device. 10. The multi-reactive component distributor according to claim 1, wherein the container (31; 76, 77) and the outlet (33, 34) have an intermediate air gap (L).
A multi-reactive component dispenser characterized by being substantially separated by. 11. The assembly according to any one of claims 1 to 10, wherein the mixer housing (2, 26, 42A, 84) and the cartridge (1).
2, 72, 30, 78, 81) and an exit area with a transcoding device (9, 19; 47, 82) for coding alignment of the mixer with respect to the cartridge. . 12. A multi-reactive component distributor, in particular claim 1.
A two-component cartridge according to claim 1, wherein said cartridge comprises at least two complete outlets (33,34) substantially separated by an intermediate air gap (L). , 7
Single piece cartridge (30, 78) composed of 7)
A multi-reactive component distributor according to claim 1. 13. A method for coupling a mixer according to claims 1 and 6 to a multi-reactive component distributor, in particular a cartridge, the step of first engaging the mixer inlet with a corresponding outlet of the distributor. And then engaging the coupling means of claim 6 so that the inlet of the mixer is kept in register with the outlet of the cartridge, thus preventing cross-contamination of components. 14. A method of coupling the mixer of claim 1 and 7 or 8 to a multi-reactive component distributor.
First engaging the inlet of the mixer with the corresponding outlet of the dispensing device or cartridge, and then keeping the inlet of the mixer aligned with the outlet of the cartridge, thus preventing cross-contamination of components. Rotating the housing of the mixer to engage the coupling means of the mixer with the coupling means of the cartridge.