US20090212075A1

US20090212075A1 - Dispensing device

Info

Publication number: US20090212075A1
Application number: US12/300,282
Authority: US
Inventors: Reinhard Neuhaus; Reiker Canfield
Original assignee: Seaquist Perfect Dispensing GmbH
Current assignee: Aptar Dortmund GmbH
Priority date: 2006-05-12
Filing date: 2007-05-02
Publication date: 2009-08-27
Also published as: WO2007131634A1; ES2537314T3; EP2018226B1; EP2018226A1; DE102006030829A1; DE102006030829B4

Abstract

The invention relates to a dispensing device for a preferably cosmetic liquid, and to a method for producing one such dispensing device. Two components are interconnected in a liquid-tight manner. The first component comprises a recess and the second component comprises a projection. The projection engages in the recess by means of a section which is complementary to the recess. The connection is created by means of a temporarily liquefied and/or deformed material which is formed by a second section connected to the first section of the projection and/or is injected into the recess, especially via a channel through the projection.

Description

The invention relates to dispensing device as well as to a method for the manufacture thereof.
In the present invention, the term “dispensing device” is to be particularly understood as a dosing pump or hand-operated pump for the dispensing of a preferably cosmetic liquid. However, it can also be any other dispensing device such as a container, output or spray head, dispenser or the like, particularly for a cosmetic liquid.
The term “cosmetic liquid” is to be understood, in a narrower sense, as cosmetics, hair spray, hair lacquer, a deodorant, a foam, a gel, a color spray, a sun protection or skin care agent or the like. Preferably, however, in a broader sense, other body care products, cleaning products or the like, and even suspensions and fluids, particularly those with gas phases, are included as well. Moreover, other liquids, for example air improvers and particularly technical liquids and fluids as well such as rust removers and the like, can as be used. Nonetheless, for the sake of simplicity and due to the emphasized use, there is often just mention of cosmetic liquid in the following.
Dispensing devices with a lower part and an elastic upper part are known. The upper part is preferably welded to the upper part in order to create a liquid-tight pump chamber. By pressing down on the upper part or at least on an actuating section of the upper part, a liquid can be forced and dispensed from the pump chamber. Subsequently, an automatic elastic restoration of the upper part or actuating section into its previous place occurs, with new liquid being sucked into the pump chamber.
It is the object of the present invention to propose an improved dispensing device and a method for the manufacture thereof, so that a liquid-tight connection can be created between two components in a simple and/or secure manner.
The above object is achieved by a dispensing device as set forth in claim 1 or by a method as set forth in claim 18. Modifications are the object of the subclaims.
One aspect of the present invention consists in connecting two components with each other in a liquid-tight manner. The first component has a recess and the second component a projection or vice versa. In the liquid-tight, connected state, a first at least substantially complementary section engages in the recess and is connected with same by means of temporary liquefied and/or deformed material which is formed by a second section of the projection and/or is injected into the recess. This permits the simple manufacture of a high-grade liquid-tight connection, hence making a very secure seal which is particularly suitable for mass production.
The liquefaction of the material occurs particularly by means of ultrasound or in another suitable manner. For instance, according to one embodiment, the second section of the projection preferably connected to the free end of the first section can be liquefied during assembly and connect the first section with the wall of the recess and/or fill out gaps present therebetween, so that the desired liquid-tight connection is created. In this case, the second section particularly constitutes an additional material supply of the projection which is liquefied during assembly—particularly through ultrasound welding—in order to finally connect the two components with each other. Especially preferably and effectively, the ultrasound can be introduced via the flat side of the component bearing the projection facing away from the projection—particularly via a raised area opposite the projection.
According to another embodiment, the material for the connecting of the projection with the recess and for the filling-out of gaps is not formed (solely) by the second (additional) section of the projection, but rather is alternatively or additionally injected through a channel in liquid form into the recess and, particularly, through the projection—particularly up to its free end.
According to another embodiment, the recess is embodied as a through hole. In this case, the projection reaches through the through hole, with the second section of the projection extending beyond the through hole and being particularly thermally deformed such that it engages behind and positively holds the first component. Preferably, the recess or through hole is embodied as a through borehole and/or the projection is embodied in the manner of a bolt or cylindrically (prior to the deformation thereof).

Further advantages, features, characteristics and aspects of the present invention follow from the claims and the following description of preferred embodiments on the basis of the drawing.

FIG. 1 shows a schematic view of a proposed dispensing device according to a first embodiment;

FIG. 2 shows an enlarged section of FIG. 1 of two components which have not yet been connected with each other;

FIG. 3 shows an enlarged section of FIG. 1 with two connected components;

FIG. 4 shows a sectional schematic view of a proposed dispensing device according to a second embodiment;

FIG. 5 shows a sectional schematic view of a proposed dispensing device according to a third embodiment; and

FIG. 6 shows a sectional schematic view of a proposed dispensing device according to a fourth embodiment with two components which have not yet been connected with each other.

In the not-to-scale, merely schematic figures, the same reference symbols are used for same or similar parts, and corresponding or comparable characteristics and advantages are achieved even if a repeated description has been omitted.
FIG. 1 shows a first embodiment of a proposed dispensing device 1 for the dispensing of a preferably cosmetic liquid 2 in the sense named at the outset. The liquid 2 can be considerably more viscous than water or, optionally, even pasty.
Allocated to the dispensing device 1 is preferably a bag or container 3 for supplying liquid 2 to which the dispensing device 1 is detachably connected as needed or vice versa. For instance, a changing of the bag 3 or the like and/or a refilling of the liquid 2 can optionally occur. Alternatively, the dispensing device 1 can also form a reservoir for the liquid 2 or the container itself.
The dispensing device 1 preferably has a first component 4, particularly a lower part, and a second component 5. The second component 5 is connected or can be connected with the first component 4, preferably in a non-detachable, liquid-tight and, particularly, gas-tight manner.
The first and/or second component 4, 5 is preferably rigid and/or a single part, particularly injection molded from a suitable, preferably food-safe plastic, particularly a polyolefin such as PP (polypropylene) or PE (polyethylene), or manufactured in another manner.
The second component 5 preferably serves to affix or hold another component, particularly an upper part or elastically deformable part or section 6. Especially preferably, the section 6 is formed from the second component 5 or formed onto same or vice versa.
In the depicted example, the second component 5 is preferably injected onto the section 6 or otherwise connected therewith in a non-detachable and liquid-tight manner. This makes simple manufacture possible, for example by means of so-called “bi-injection,” i.e. particularly the injection of another material in the same injection mold in which the first material is formed. Particularly, a chemical and/or mechanical connection is thus made possible.
Alternatively or in addition, the second component 5 can also be connected or held with the section 6 by means of an undercut, recess, through hole, overlap, or the like. However, the other component and the second component 5 can also be separate components.
In the illustration according to FIG. 1, the terms “lower part” and “upper part” correspond to the preferred arrangement or orientation of the dispensing device 1 during normal use. This is not necessarily the case, however. Accordingly, depending on the requirement, application, design and the like, the lower part and the upper part can also be located or oriented in any spatial alignment with respect to each other.
The section 6 is preferably designed to be elastically deformable. Especially preferably, an accommodating or pump chamber P for the liquid 2 is formed between the first component 4 and the other component or section 6 or delimited therefrom, at least in part.
The dispensing device 1 is preferably embodied as a pump with an inlet valve 7 and a discharge valve 8.
Preferably, the section 6 forms the inlet valve 7 and/or outlet valve 8 together with the first component 4. However, the valves 7, 8 can also be formed separately. The valves 7, 8 are preferably embodied as self-closing one-way valves.
When the pump chamber P is filled with liquid 2, the volume of the pump chamber P can be made smaller through the deformation of the section 6 starting from the resting and initial position shown in FIG. 1, thus forcing liquid 2 from the pump chamber P and dispensing same. In particular, an optional actuating element 9 is preferably pressed down manually in the direction of the arrow N for this purpose, thus pressing down at least an actuating section 10 of the section 6.
Preferably, the actuating element 9 is allocated to a preferably cap-like housing part 11 or formed therefrom. In the depicted example, the housing part 11 forms a lever which can preferably be slid axially, tipped or pressed in to actuate the covering device 1 or the pump formed therefrom.
However, it is also possible, for example, for a user (not shown) or other object to press directly on the section 6 or actuating section 10 to dispense liquid.
Upon pressing down or pumping, the liquid 2 is delivered or dispensed via the discharge valve 8. In particular, the opening of the discharge valve 8 occurs automatically, preferably due to the pressure of the liquid and/or—or, optionally, in addition—due to a corresponding deformation of the section 6 while being pressed down.
In the depicted example, the discharge valve 8 is preferably arranged laterally next to the actuating section 10 or a preferably dome- or hemispherical area of the section 6.
The discharge valve 8 is preferably formed by a valve element, for example one in the manner of a flap, which is particularly formed on the second component 5 or the section 6 or is formed therefrom.
The discharge valve 8 is connected to the pump chamber P via a connection channel 12. Particularly, the opening of the discharge valve 8 occurs automatically as a result of the pressure of the liquid. The liquid 2 can then flow out and be dispensed via a connecting discharge channel 13 and/or a nozzle 14 or the like.
In particular, the liquid 2 is discharged or sprayed or atomized from the nozzle 14 upon pressing down of the actuating element 9 or housing part 11. Alternatively or optionally, the dispensing of liquid 2 through the dispensing device 1 can also occur in a non-atomized state.
When there is a corresponding drop in the liquid pressure in the pump chamber P—particularly after the pressing down of the actuating section 10 has ended—the discharge valve 8 closes again, preferably automatically, particularly due to corresponding return forces.
After release, as a result of the inherent elasticity or return force of the actuating section 10 or of the section 6, a preferably automatic return to the initial position shown in FIG. 1 occurs, with new liquid being taken up, preferably sucked in, via the inlet valve 7 into the pump chamber P. The opening of the inlet valve 7 during the return occurs preferably as a result of the negative pressure present then in the pump chamber P.
The inlet valve 7 preferably has a valve flap 15 formed on the section 6 or the second component 5 which is pretensioned against an inlet opening 16 and is particularly arranged in the pump chamber P. Especially preferably, the valve flap 15, which is embodied, for example, in the manner of a leaf spring, is pretensioned against the inlet opening 16 by means of a pretensioning element 17 which is likewise preferably flap- or bridge-like. The pretensioning element 17 is particularly formed on the section 6 or actuating section 10. The pretensioning element 17 supports the closing of the valve flap 15—particularly in the case of higher-viscosity liquid 2 as well—and ensures that the inlet valve 7 also remains closed during normal operation.
During the return of the section 6 or actuating section 10 from the pressed-down position (not shown) to the initial position shown in FIG. 1, liquid 2 can be taken up or sucked via a preferably provided connection 18 connected to the inlet valve 7 or the inlet opening 16 and particularly a suction line 19 connected thereto and extending into the container 3. The inlet valve 7 or the valve flap 15 is then opened, as indicated with a broken line in FIG. 1. After the sucking or sucking in of liquid 2 into the pump chamber P, the inlet valve 7 or its valve flap 15 preferably closes again automatically.
In the first embodiment, the first component 4 has a preferably groove-like recess 10 and the second component 5 has a preferably bridge-like projection 21, particularly one which corresponds substantially to the recess. The projection 21 engages in the recess 10, with the two components 4, 5 being connected or connectable with each other in a non-detachable manner in this area. The connection of the two components 4, 5 or of the upper part with the lower part is liquid-tight and, particularly, also gas-tight in order to be able to withstand the loads and pressures occurring during pumping and, particularly, to enable effective pumping without leakage.
In the depicted example, the component 5 or the projection 21 is particularly annularly embodied and particularly peripherally arranged in a circumferential manner at least in sections, preferably around the section 6 or actuating element 10.
FIGS. 2 and 3 illustrate in enlarged sections of FIG. 1 the preferred connection of the two components 4, 5 according to the first embodiment. FIG. 2 shows the two components 4, 5 in the as-yet unconnected state, but with projection 21 already inserted into the recess 20. FIG. 3 shows the two components 4, 5 in the connected state.
The project 21 has a first section 22 which is at least substantially complementary to the recess 20 and at least substantially rectangular in the depicted example in the axial section shown. The recess 20 is preferably likewise at least substantially rectangular or slightly tapered in the axial section or cross section. In particular, the first section 22 is adapted in its radial width or thickness such that it can be inserted axially into the recess 20, particularly with slight radial play at most, which is to say with only small lateral gaps. The axial extension of the first section 22 corresponds at least substantially to the depth of the recess 20 (groove depth).
The projection 21 further comprises a second section 23 which connects to the first section 22 particularly at the free end or at the bottom 24 of the recess 20. Especially preferably, the second section 23 is tapered toward the groove bottom 24, particularly at least substantially trapezoid-shaped or triangular in its cross section as indicated in FIG. 2. In the first embodiment, the second section 23 serves only to make (additional) material available for the connection of the two components 4, 5. Accordingly, the second section 23 is no longer present in the connected state of the components 4, 5, but rather is deformed or consumed particularly through liquefaction into the existing gaps or the like in order to bring about the desired connection of the components 4, 5.
The recess 20 is preferably formed in a flat section 25 of the first component 4. Especially preferably, the first component 4 is worked off perpendicularly to the flat section 25 to form the recess 20. The projection 21 preferably protrudes away from a flat section 26 of the second component 5 or upper part, particularly at least substantially perpendicularly. In the assembled or connected state, the two flat sections 25, 26 preferably come to lie on top of each other.
On the side facing away from the projection 21—particularly directly opposite the projection 21—the second component 5 preferably has a raised area 27 for the targeted introduction of ultrasound, particularly by means of a transmission element 28 which can be mounted as indicated in FIG. 2. The raised area 27 is particularly annular and, in cross section, at least substantially rectangular in order to be able to set the particularly annular transmission element 28 of an ultrasound head or the like in place to weld the two components 4, 5 by means of ultrasound.
The radial width of the raised area 27 preferably corresponds at most to five times the radial thickness of the projection 21 in order to achieve a targeted introduction of the ultrasound and focusing in the area of the projection 21. Especially preferably, the radial width of the raised area 31 is at least substantially two to three times the radial thickness of the projection 21, particularly at least substantially two times or less.
During the introduction of ultrasound, the ultrasound is transmitted through the second component 5, which is preferably at least substantially embodied in a single piece in the area of the axial ultrasound transmission, to the free end of the projection 21, particularly to the second section 23. The ultrasound waves are focused through the tapered, particularly at least substantially pointedly or bluntly tapering end of the second section 23 and produce such a thermal influence in this area that the material of the second section 23 is liquefied, particularly with optimal additional pressure influence. This temporarily liquefied material then connects the projection 21 or the first section 22 with the wall of the recess 20 and/or fills gaps between the projection 21 and the wall of the recess 21, particularly toward the side walls of the recess 20, whereby a durable and liquid-tight and particularly also gas-tight connection between the components 4 and 5 can be achieved in a very simple, effective and quick manner. FIG. 3 shows the two connected components 4 and 5, with the second section 23 having been transformed in this state due to the material liquefaction and being no longer identifiable in its original form.
In the depicted example, the second component 5—particularly with the raised area 31—overlaps over the annular area 29 of the section 6 connecting radially on the inside to the second component 5, so that the annular area and hence the section 6 as well are preferably also held axially in a positive fashion.
The recess 20 and the projection 21 preferably extend at least substantially peripherally around the section 6 or the pump chamber P in the depicted example, especially preferably in a continuous or, as needed, interrupted manner or in sections or sectors. Accordingly, a good and tight connection can be achieved via this peripheral or longitudinal stretch.
In the following, other embodiments are explained on the basis of the other figures. In so doing, particularly, only substantial differences or additional aspects are explained. In particular, the previous explanations are applicable in a complementary or corresponding manner.
FIG. 4 shows a second embodiment in a schematic, not-to-scale section. FIG. 4 shows the two components 4 and 5 in the already-connected state. The second embodiment differs from the first embodiment in that, instead of the second section 23, at least one channel 30 is formed in the projection 21 or by the first section 22. The channel 30 extends, particularly, from the free or axial end of the projection 21 to the other side of the second component 5. The channel 30 preferably extends at least substantially axially. However, other courses are also possible.
It is through the channel 30 that the material 31 (the same plastic or another plastic such as the first and/or second component 4, 5, as needed) provided for connecting the two components 4 and 5 is injected, particularly so that the material 31 also fills the lateral space between the projection 21 and side walls of the recess 20 at least in part. To achieve better distribution, distribution channels 32 can be connected to the channel 30 at the front surface and/or the side surfaces, so that a very uniform distribution of the injected material 31 and hence a very uniform and tight connection of the two components 4, 5 is made possible and, particularly, can also be ensured.
According to one modification, the channel 30 can also be designed in the shape of a slit, at least in the area of its opening end facing the bottom 24. In this manner, an optimal distribution of the liquid material 31 along the longitudinal stretch of the projection 21 or the recess 20 is made possible and, preferably, also ensured.
As needed, the second component 5 or the projection 21 can be provided with several channels 30. The channels 30 are then preferably distributed over the longitudinal stretch (perpendicular to the drawing level in the depicted example) of the recess 20 or the projection 21.
FIG. 5 shows a third embodiment in a schematic, not-to-scale section. Several projections 21 are preferably provided. The projections 21 here are preferably formed on the first component 4. They reach through the recesses 20 in the second component 5 preferably embodied as through holes. Via the through holes on the side facing away from the first component 4, protruding second sections 23 of the projections 21 are preferably deformed by means of mechanical, thermal and/or ultrasound influence such that they engage behind the respective through hole or the second component 5. A very solid and also tight connection of the two components 4 and 5 is thus made possible in a very simple manner.
In particular, a plurality of preferably cylindrical or bolt-like projections 21 are distributed around the pump chamber P or the section 6 or a raised area of the second component 5 and/or along a connection area, with the projections 21 reaching through these allocated, particularly hollow and cylindrical through holes of the second component 5.
Accordingly, the two components 4 and 5 are preferably connected with each other along a particularly oblong or linear connection area.
According to another aspect which can also be implemented separately, the first and/or the second component 4 and/or 5 has a seal ring 33—preferably around the pump chamber P, particularly on the flat section 25 or 26—which in turn has another component 4 or 5 in order to ensure an especially good seal.
The respective arrangement of the recess 20 on a component 4 or 5 and of the projection 21 on the other component 4 or 5 can also be switched as needed.
FIG. 6 shows, in a schematic view, a fourth embodiment of the proposed dispensing device 1, which is designed here particularly as a dispensing head or spray head—i.e. not as a pump, dispenser or the like as in the foregoing embodiments. FIG. 6 shows the dispensing device 1 in the not yet completely mounted or assembled state.
Here again, the first component 4 is provided with the preferably groove-shaped recess 20 which extends particularly in a U shape, with the nozzle 14 being arranged at the dispensing end preferably between the U-shaped legs.
The second component 5 is provided with the projection 21 particularly designed to be at least substantially complementary to the recess, with the projection 21 having, in particular, the first section 22 and the connecting second section 23 according to the first embodiment. The remarks and explanations of the first embodiment are applicable here in a complementary or corresponding manner.
The dispensing device 1 or the first component 4 is preferably provided with a connector 34 which is particularly embodied as a cylindrical connector or the like. By means of the connector 34, the dispensing device can be connected to a container 3 (not shown) a valve (not shown) or the like, particularly placed or fitted onto a connection element.
The connector 34 extends particularly transversely to the dispensing direction of the nozzle 14 preferably formed by the dispensing device 1.
The dispensing or spray head formed by the dispensing device 1 is particularly divided in longitudinal or two halves with respect to the dispensing direction which are formed by the two components 4 and 5. However, other divisions and constructive solutions are also possible here.
In the depicted example, the proposed dispensing or spray head preferably has a first dispensing chamber 35 which is fluidly connected with the connector 34, an optional narrowing or throttle 36 adjacent to the first dispensing chamber 35 and/or a second dispensing chamber 37 adjacent thereto to which the nozzle 14 connects.
In the depicted, preferred two- or multiple-part design, the dispensing chambers 35 and 37 as well as the narrowing 36 and nozzle 14 are each divided in two in both components 4 and 5 or are formed or delimited by same. However, other constructive solutions are also possible here. In particular, a two-part design of the nozzle 14 and/or of the narrowing 36 is only optional.
In the depicted example, the liquid 2 to be dispensed (not shown) is able—particularly due to a corresponding propellant contained therein—to already expand somewhat in each of the two dispensing chambers 35 and 37 in order to then be sprayed or atomized via the nozzle 14. However, other constructive solutions are also possible here. In particular, the liquid 2 can also be dispensed in non-atomized form, for example as a stream of liquid.
It should be noted that various elements influencing the flow such as projections, narrowings, baffles, bridges or the like can be formed in the flow path—particularly in the dispensing chambers 35 and 37—can be formed by the dispensing device 1 or the components 4 and 5.
In the depicted example, the two components 4 and 5 are folded together starting from the position shown in FIG. 6 such that the projection 21 engages in the recess 20. Namely, in the depicted example, the components preferably manufactured by means of injection molding are preferably connected with each other via an optional connection 38 such as a bridge or a film hinge or the like. This permits a very simple and cost-effective, single-part manufacture. In particular, the later assembly is made considerably simpler, since the components 4 and 5 do not have to be allocated to each other in pairs first. However, the components 4 and 5 can also be manufactured separately.
When the projection 21 engages in or presses into the recess 20, a welding of the components 4 and 5 then preferably occurs during assembly. Particularly, this occurs here again as in the first embodiment, in that an ultrasound tool (not shown) or the like is placed onto the second component 5 and the second section 23 of the projection 21 is melted under the ultrasound effect in order to connect or to weld the projection 21 or first section 22 solidly and liquid-tightly and, particularly, gas-tightly with the wall of the recess 20 or to at least seal off existing gaps.
A tight connection of the two components 4 and 5 is thus made possible in a simple manner, particularly even with considerable manufacturing tolerances. Moreover, an optimal structuring and a simple manufacture of the inner chamber and/or the nozzle 14 of the dispensing device 1 is made possible.
Individual features and aspects of the various embodiments can often be combined with each other at will or be used in other dispensing devices or the like.
In particular, the present invention is generally related to the liquid-tight connection of two pump parts or the like.

LIST OF REFERENCE SYMBOLS

1 dispensing device
2 liquid
3 container
4 component
5 second component
6 section
7 inlet valve
8 discharge valve
9 actuating element
10 actuating section
11 housing part
12 connection channel
13 discharge channel
14 nozzle
15 valve flap
16 inlet opening
17 pretensioning element
18 connector
19 suction line
20 recess
21 projection
22 first section
23 second section
24 bottom
25 flat section
26 flat section
27 raised area
28 transmission element
29 annular area
30 channel
31 material
32 valve channels
33 seal ring
34 connector
35 first dispensing chamber
36 narrowing
37 second dispensing chamber
38 connection
N pressing-down direction
P pump chamber

Claims

1. Dispensing device for a cosmetic liquid, with a first component and a second component which are connected or can be connected with each other in a liquid-tight and non-detachable manner, wherein the first component has a groove-like recess and the second component has a projection with a first ridge-like section complimentary to the recess which engages in the recess in the connected state and is connected to the wall of said recess through temporarily liquefied and/or deformed material that is formed by a second section of the projection or injected into the recess.

2. Dispensing device as set forth in claim 1, wherein the recess is closed on the end facing away from the second component, particularly wherein the material in the area of the closed end connects the projection with the recess wall and/or fills out gaps between the projection and the recess wall.

3. (canceled)

4. Dispensing device according to claim 1, wherein the second section extends to the bottom of the recess in the unconnected state.

5. Dispensing device according to claim 1, wherein the second section tapers toward the bottom of the recess in the unconnected state, particularly is at least substantially trapezoid-shaped or triangular in cross section.

6. Dispensing device according to claim 1, wherein the first section (22) is at least substantially rectangular in cross section and/or the recess is at least substantially rectangular in cross section.

7. Dispensing device according to claim 1, wherein the first section has at least one channel that extends from the free end preferably to the other side of the second component and through which the material is injected, particularly so that the material fills the lateral space between the projection and the recess wall at least in part.

8. Dispensing device as set forth in claim 7, wherein the channel (30) is embodied as a slit, particularly as a longitudinal slit.

9. Dispensing device according to claim 7, wherein the projection is provided with several channels (30).

10. Dispensing device as set forth in claim 1, wherein the recess is embodied as a through hole and the projection reaches through it, with the second section being deformed and/or liquefied such that it engages behind the through hole.

11. Dispensing device as set forth in claim 10, wherein the second section is deformed by one or more of thermally and ultrasound.

12. Dispensing device according to claim 13, wherein the second component has a raised area on the side facing away from the projection for the targeted introduction of ultrasound by means of a transmission element that can be mounted.

13. Dispensing device according to claim 1, wherein the recess is formed in a flat section of the first component.

14. Dispensing device according to claim 1, wherein the projection protrudes from a flat section of the second component.

15. Dispensing device according to claim 13, wherein the two flat sections lie on top of each other when the components are connected.

16. Dispensing device according to claim 1, wherein the first and/or second component is manufactured from a polyolefin, particularly polypropylene or polyethylene, especially preferably LLPE, TPEE or TEEE.

17. Dispensing device according to claim 1, wherein the first and, particularly, second component delimit or form a particularly elastically, preferably manually, deformable pump chamber of the dispensing device.

18. Dispensing device according to claim 1, wherein the dispensing device is embodied as a dispenser, pump or atomizer and/or can be operated manually.

19. Dispensing device according to claim 1, wherein the dispensing device is embodied as a preferably mountable dispensing or spray head.

20. Method for the manufacture of a dispensing device for a preferably cosmetic liquid, with two components connected in a liquid-tight manner, wherein a projection of a second component is inserted into a recess of a first component and wherein a portion of the projection is deformed and/or liquefied or liquid material is injected through a channel through the projection in order to connect the two components with each other.