Patent Application
20100038385
The present invention relates to a dispensing device for a preferably cosmetic product as well as the use thereof.
The dispensing device is preferably used for a non-spraying delivery or dispensing of a preferably cosmetic product. However, a spraying delivery can also be provided for.
The term “cosmetic liquid” is to be understood, in a narrower sense, as cosmetics, hair spray, hair lacquer, a deodorant, a foam, particularly shaving foam, a gel, a color spray, a sun protection or skin care agent or the like or other cosmetic liquids, fluids, pastes, lotions, emulsions 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 and fluids, for example air improvers and particularly technical liquids and fluids as well such as rust removers and the like, can also be used. Nonetheless, for the sake of simplicity and due to the emphasized use, there is often only mention of cosmetic liquid in the following. Especially preferably, the proposed dispensing device is used for the storage and delivery of a gel, particularly shaving gel, or a paste, particularly toothpaste, or the like.
EP 0 320 510 B1 discloses a dispensing device with a valve which has a valve housing. The valve housing is provided with a tubular section with side wings extending radially to mutually opposing sides. Welded onto the side wings and the tubular section by means of thermal welding. The valve is held by a plate which is connected to an outer container in a gas-tight manner. As a result of gas in the outer container, pressure is exerted on the inner container in order to be able to output a cosmetic product contained in the inner container. The valve has a female valve element into which a tubular connector of a dispensing head can engage. By depressing the valve element, the valve opens against the force of a return spring.
One aspect of the present invention is directed toward an improved dispensing device which is more universally utilizable vis-à-vis the prior art.
According to the invention, the dispensing device has a valve with a female valve element, with the valve element being provided with at least one engagement section for the positive and/or locking fastening of a male valve adapter which can be inserted into the valve element after assembly of the valve. This permits a subsequent installation of the valve adapter in order to convert or rebuild the valve as a male valve. Resulting from the positive and/or locking, preferably permanent, fastening of the male valve adapter in the valve element is a defined fixation and secure mounting. Accordingly, the proposed dispensing device can be used universally, and a high level of safety can be reached when used on the valve adapter. In particular, as a result of the secure fastening of the valve adapter, a dispensing head mounted on the valve adapter can also be held in a correspondingly secure manner.
According to another aspect of the present invention which can also be implemented independently, a return spring associated with the valve element ends at a distance from the valve adapter, so that the return spring does not radially enclose the valve adapter and the valve element can be embodied with as large an inner diameter as possible for accommodating the valve adapter or a filling nozzle. Accordingly, the proposed dispensing device or its valve can be filled with a larger flow cross section and hence at greater speed relative to the prior art.
Further advantages, features, characteristics and features of the present result from the claims and the following description of a preferred embodiment on the basis of the drawing.
While the figures are not true-to-scale, the same reference symbols are used for same or similar parts, with corresponding or comparable characteristics and advantages being achieved even when a repeated description has been omitted.
The dispensing device 1 has a valve 3 via which the product 2 can be dispensed. As needed, the valve 3 can be embodied as a dosing valve or the like. It can be opened, for example, by depressing a dispensing head attached thereto (not depicted) or in another suitable manner. In particular, the product 2 can be dispensed in liquid form, pasty form, as foam, as gel or the like via the valve 3 or a dispensing head or the like attached thereto.
The dispensing device 1 has a flexible inner container 4, as indicated schematically in
Especially preferably, the wall of the inner container 4 is film-like and/or formed by a composite film. The wall is preferably diffusion-tight at least to a great extent. For example, the wall or film can have an aluminum layer, aluminum vapor deposition or the like as well as other layers, particularly layers consisting of a polyolefin.
The dispensing device 1 further preferably has an outer container 5 which is merely indicated with a broken line in
The plate 6 is preferably fabricated from metal. In principle, however, it can also consist of plastic or any other suitable material, particularly a composite material.
The valve 3 has a valve housing 3a which is connected with the plate 6 or held thereby. In the depicted example, the plate 6 has a side 6a—here an underside, inner side, flat side or a ring-shaped area—facing the inner container 4 or interior of the outer container 5 which is provided with a preferably middle, outwardly protruding recess 6b.
The valve 3 or valve housing 3a is accommodated or held with one end in the recess 6b, particularly by means of clamping, nonpositively or positively, for example through spraying or injection, caulking, welding, adhesion or the like. The valve 3 or valve housing 3a preferably terminates on the outlet side in the recess 6b. Preferably, a particularly ring-shaped seal 7 is arranged between the bottom of the recess 6b and the front side of the valve housing 3a in order to seal off the valve housing 3a on the outside vis-à-vis the plate 6 and hence to be able to seal the outer container 5 in a gas-tight manner. However, other constructive solutions are also possible.
The inner container 4 is connected in a gas-tight manner with the valve housing 3, particularly at the end area or inlet end facing away from the plate 6. This end area or this inlet end protrudes particularly into the interior of the outer container 5 and particularly into the interior of the inner container 4.
The inner container 4 contains the preferably cosmetic product 2 to be dispensed. To facilitate the extraction of the product 2 from the inner container 4, an optional riser 8, particularly a tube or the like, can be connected to the valve 3 on the inlet side. The riser 8 is particularly inserted into or onto a connector or the like on the inlet side formed by the valve housing 3a or otherwise appropriately connected or connectable with the valve housing 3a on the inlet side.
The outer container 5 is filled with a pressurized gas 9, which is indicated with dots in
The gas pressure prevailing in the outer container 5 acts on the outside of the flexible inner container 4 such that, when the valve 3 is opened, the product 2 is delivered via the valve 3 and an optionally connected dispensing head or the like. Upon removal or dispensing of the product 2, the inner container 4 collapses.
The inner container 4 is, as already mentioned, connected, particularly fused, to the valve housing 3a in a gas-tight manner. Especially preferably, the inner container 4 is ultrasound welded with the valve housing 3a. This enables a substantially more energy-saving, quicker and/or more cost-effective manufacture of the dispensing device 1 in comparison to the thermal welding provided for in the prior art. However, it is also possible in principle to connect the inner container 4 with the valve housing 3 in another suitable manner, for example through another type of bonding, clamping, injection, adhesion or the like.
In the depicted example, the valve 3 or valve housing 3a has an at least substantially tubular section 3b and, particularly, two side wings 3c arranged on opposing sides of the section 3b and extending particularly radially and along the tubular section 3b. This can be seen, in particular, in the perspective view of the valve 3 according to
The side wings 3c taper preferably toward their free edges. In particular, the two wings 3c extend outward or radially to a point. This prevents or minimizes the formation of a gap in the area of the free edges and the inner container walls meeting the edge starting from the tubular area 3b.
The inner container 4 is connected, particularly ultrasound welded, with the valve housing 3a particularly in the area of the preferably tubular section 3b and the side wings 3c. In the depicted example, the inner container 4 preferably has an upper connection or weld seam 3a arranged in the area of the valve 3, with said seam 3a being indicated in
In order to achieve as great a diffusion tightness of the valve housing 3a as possible, which is to say to minimize a possible diffusion of the gas 9 or of components of the gas 9 such as oxygen through the valve housing 3a into a valve chamber with the product 2, where the gas 9 or a component of the gas 9 can react with the product 2, especially after lengthy storage, the inner container 4 is connected or welded with the valve housing 3a preferably over a length of at least 70%, particularly 80% or greater, of the longitudinal extension of the valve housing 3a or valve 3, thus covering the valve housing 3a in a diffusion-tight manner.
Alternatively, or in addition, the inner container 4 is connected or welded with the valve housing 3a preferably up to the side 6a of the plate 6 facing or adjacent to the inner container 4 in order to increase the diffusion tightness of the valve housing 3a.
As a result of the increase in diffusion tightness, it is possible in principle to reduce the wall thickness of the valve housing 3a. This allows, for example, at least for a more cost-effective manufacture.
According to another likewise independent aspect of the present invention, at least one weld bead 10 is preferably arranged or formed, particularly molded, on the valve housing 3a prior to welding with the inner container 4. During welding, the weld bead 10 is covered by the inner container 4. The weld bead 10 is particularly designed to be land-like or rib-like and/or ongoing or continuous. The weld bead 10 is designed, for example, to be substantially triangular, rectangular, trapezoidal or convex or arched in its cross section.
Especially preferably, a welding of the inner container 4 with the valve housing 3a occurs along the weld bead 10, so that a defined, particularly at least substantially linear connection between the valve housing 3a on the one hand and the inner container 4 on the other hand is made possible. In this manner, a defined and tight connection between the valve housing 3a and the inner container 4 can be achieved with relatively little ultrasound energy. However, the weld bead 10 can be used not only during ultrasound welding, but during other types of welding as well.
The weld bead 10 preferably has a height and/or width of at least 0.2 mm and/or of at most 0.8 mm, especially preferably less than 0.5 mm. Very especially preferably, the height and/or width is essentially 0.3 mm.
Especially preferably, the weld bead 10 terminates in an edge or tip which is at least substantially rectangular in cross section. The weld bead 10 is designed to be particularly substantially triangular or trapezoidal in cross section or is provided with an at least substantially triangular or trapezoidal tip toward the free end.
Especially preferably, the weld bead 10 extends at least substantially around a periphery of the valve housing 3a or of a surface of the valve housing 3a to be connected with the inner container 4.
Especially preferably, the weld beads 10 extend to the free longitudinal edges of the side wings 3c, optionally even somewhat beyond these laterally, in order to ensure a good seal and connection with the inner container 4 after welding in the area of these edges as well.
Especially preferably, the weld bead 10 forms a closed loop. However, it can also be a finite land, rib or the like, i.e. one which is not closed.
Instead of a continuous weld bead 10, several sections which overlap each other and/or only have small gaps between each other, for example, can also be provided.
Especially preferably, at least two weld beads 10 are provided which extend spaced apart from or parallel to each other. In this manner, a kind of “double seal” or two-fold linear connection can be achieved between the valve housing 3a on the one hand and the inner container 4 on the other hand.
During welding of the inner container 4 with the valve housing 3a, a fusing of the weld bead 10 or weld beads 10 occurs, which results in a flattening out and connection with the inner container 4.
In
Especially preferably, the valve housing 3a and at least the inner layer of the inner container 4 are made from the same material. This facilitates the connecting, particularly the welding. This is not absolutely necessary, however. It is also possible for different materials to be used which can be connected with each other, particularly by means of welding or in another suitable manner, as already described.
If the inner container 4 is manufactured from a single-layer material, this material also forms the inner layer. The term “inner layer” is therefore to be understood such that it comprises a single-layer design.
In the depicted example, the valve housing 3a and/or the inner layer of the inner container 4 preferably consists of polyethylene. Compared to the prior art, this material displays a significantly higher diffusion tightness. Moreover, this material can also be welded by means of ultrasound.
Alternatively, polyamide can particularly also be used for the valve housing 3a and/or the inner layer of the inner container 4. In particular, corresponding advantages result here as with the use of polyethylene.
It should be noted that the valve housing 3a need not consist entirely of the named material. Rather, the valve housing 3a can also be manufactured from another material according to a design variant (not depicted). For example, according to one design variant (not depicted), it is possible to manufacture the valve housing 3a in the area in which it is not connected with the inner container 4 or is covered thereby from another material or to provide it with a covering made from another material, with the other material having, in particular, a greater diffusion tightness or other advantageous characteristics. For example, it is possible to inject a diffusion-tight covering, especially preferably by means of so-called “bi-injection,” i.e., injection of the other material in the same injection mold against a first material.
The dispensing device 1 or the valve 3 has a female, particularly pot-like, valve element 11 as shown in the schematic section according to
According to the present invention, the valve element 11 is designed for the positive and/or locking fastening of a male valve adapter 12, which can be inserted into the valve element 11. For this purpose, the valve element 11 has, in particular, at least one engagement section 13 which can be made to engage with an engagement section 14 of the valve adapter 12 preferably embodied to be at least substantially complementary thereto, particularly such that both engagement sections 13, 14 engage in each other radially as indicated in the enlargement according to
Especially preferably, the engagement section 13 and/or the engagement section 14 is groove-like, land-like, rib-like, lip-like or similarly formed. However, other constructive solutions are also possible.
As needed, several axially spaced, particularly radially acting engagement possibilities between the valve adapter 12 and the valve element 11 can also be provided. In particular, several engagement sections 13 and 14 are then respectively provided.
The valve adapter 12 is preferably at least substantially tubular and has at least one engagement section 14, preferably on a periphery or the outside. Optionally, several engagement sections are distributed over the periphery. Especially preferably, however, it has a continuous engagement section 14. Particularly, the valve adapter 12 is designed to be at least substantially rotationally symmetrical, so that no particular orientation of the valve adapter 12 to the valve needs to be maintained during assembly. However, it is also possible for the valve adapter 12 to be connectable with the valve element 11 in a torsionally rigid manner—then preferably with a certain rotational tolerance.
The valve adapter 12 can be inserted from the outside into the valve element 11 after assembly of the valve 3 of the dispensing device 1, particularly such that the valve adapter 12 is held positively and/or in a locking manner, particularly non-detachably.
The valve element 11 preferably has several engagement sections 13 particularly distributed over an inner periphery.
Especially preferably, the valve element 11 has ribs 15 preferably running axially distributed over an inner periphery (in
The ribs 15 are preferably spaced apart from each other or distributed over the inner periphery or provided with large intermediate spaces such that, when the valve 3 is opened, the dispensed product 2 is able to flow along from the seal 7 between the ribs 15 along the valve adapter 12 on the outside up to the open end of the valve adapter 12 in the valve element 11.
Preferably, the valve element 11 directly forms an abutment 17, here particularly by means of a ring-shaped collar, a ring flange or the like, for the return spring 16, which is supported with the other end particularly on the inside at the valve housing 3a. According to an aspect of the present invention which can also be implemented independently, the abutment 17 is spaced axially from the dispensing-side or seal-side end of the valve element 11, so that the valve element 11 is able to form a relatively long wall section 18 between the seal 7 and the abutment 17 and/or the return spring 18 does not enclose the inserted valve adapter 12 on the outside.
Especially preferably, the spacing of the abutment 17 from the seal 7 or from the seal-side end of the valve element 11 is substantially larger than the maximum insertion depth of the valve adapter 12.
Especially preferably, the axial length of the wall section 18 or the aforementioned spacing is at least 20%, particularly about 40 to 50% or more of the axial length of the valve element 11.
Particularly, a provision is made that the abutment 17 is spaced apart from a dispensing-side end of the valve element 11 such that the valve element 11 forms a wall section 18 with an enlarged inner diameter.
In this manner, a substantially faster filling of the dispensing device 1 or of the valve 3 and hence a more universal utilization is made possible.
The valve element 11 or the wall section 18 is preferably embodied such that an inner diameter of preferably at least 3 mm is formed (between the ribs 15 as well) which is as large as possible. The large inner diameter allows for substantially faster filling or the use of a larger-sized filling needle. Accordingly, the valve adapter 12 can be larger in its outer diameter and inner diameter in order to also allow for faster filling compared to the prior art even when the valve adapter 12 is used.
Individual features and constructive solutions of the described embodiments can also be combined with each other as desired and/or used in other dispensing devices.
| Number | Date | Country | Kind |
|---|---|---|---|
| 102008038673.1 | Aug 2008 | DE | national |
