EP3487785A1

EP3487785A1 - Spray cap for aerosols

Info

Publication number: EP3487785A1
Application number: EP17742965.1A
Authority: EP
Inventors: Ingo Malchus
Original assignee: Beiersdorf AG
Current assignee: Beiersdorf AG
Priority date: 2016-07-22
Filing date: 2017-07-11
Publication date: 2019-05-29
Also published as: WO2018015206A1; DE102016008786A1

Abstract

The invention relates to a spray cap (1) for placing on top of an aerosols, comprising means (3.1) for securing against unintentional flipping up the lid of the actuation element (3).

Description

description

Spray cap for aerosol cans

The invention relates to a spray cap for attachment to a Aerosoldruckgaspackung with a safeguard against unintentional folding up of the actuator.

Compressed gas packages are usually constructed from a spray can with an opening in the can lid spray line and a spray valve, which is located in, in front of or behind the spray line. This valve is closed in the "storage state" and can be opened to remove the contents of the package with an externally accessible actuator against a restoring force.

To protect the spray head the usual spray cans are provided with a protective cover.

Spray cans are usually made of metal or plastic, wherein the spray head, parts of the spray head, the actuator and the guard can also be made of plastic (mainly polypropylene). The content to be sprayed is filled under pressure into the metal or plastic can and is released when the valve is actuated as a mist (aerosol) or as a foam.

Spray cans or compressed gas packages are for many products on the market; Examples include products from the cosmetics sector, such as hair spray, deodorants, shaving foams, but also spray adhesives, room freshener fragrances, insect sprays, cleaning products and many more.

Currently available spray systems for aerosol pressurized gas packages are available in one or more parts. As a rule, they have a nearly cylindrical shell part, which is firmly connected to the aerosol container, and an actuating element, via which the aerosol valve is pressed down on. The actuating element for triggering the spraying process is usually resilient in the visible shell part of the spray cap or movably mounted so that can be triggered by a depression of the actuating element of the spray mechanism.

EP 0 323 874 A1 shows a container provided with a protective cap for spraying products. The delivery of the product is done here by the absorption and the reproduction of the product via an absorbent, which has essentially the shape of a disc. An embodiment of the container is also designed such that the means for actuating the ejection device from the outside of the protective bell comprises a deformable region of the protective bell.

DE 102009007813 discloses a spray cap for attachment to a compressed gas package comprising a jacket part and an actuator with a nozzle opening, characterized in that the cover part is a cover device movably connected, wherein the connection between cover and outer shell allows a folding movement and wherein the cover device in the closed State that

Betätigungsetement covered (closed position) and at least partially superimposed on the upper edge of the shell part and / or overlaps.

Often, a plastic connection or a perforation between the shell part and the actuating element is broken at the first triggering of the spraying process for tamper-evident, in order to allow a depression of the actuating element. Subsequently, the triggering of the spraying process without hindrance is possible.

Today it is state of the art that spray caps (English Aerosol Header) with integrated actuator (finger button), are injected with a small connection. This connection is on the one hand to secure the actuator against accidental depression during transport and on the other hand hold the Betätigungsetement when placing the spray head on the aerosol container in position. Furthermore, the

Connection during the installation of the spray cap on the aerosol can help to ensure that the finger button does not open up. Since this connection must be broken by the user during initial operation (tamper-evident), this must only be interpreted very weakly and does not always withstand the forces occurring during installation.

As a rule, the complete spray head with attached protective cap in one

Mounting step on the aerosol container aufgeprellt (put on, pressed), it is not possible to prevent the actuator by counterpressure on unfolding. The object of the invention is to provide a spray system in the form of a spray cap for aerosol pressure gas cylinders, which does not have the disadvantages of the prior art. In particular, a spray cap is to be made available, in which a mechanical locking of the actuating element relative to the

Shell part in the course of the manufacturing process, the injection molding, takes place.

The object is achieved by a spray cap according to the invention for attachment to an aerosol pressure gas packing, as shown in the main claim. The subclaims describe an advantageous embodiment of this spray cap and a package with this spray cap.

The invention relates to a spray cap for attachment to a compressed gas package, wherein spray cap and compressed gas package form a spray system, comprising a jacket part with an articulated on the jacket part actuating element and a shell part

overarching protective cardboard, characterized in that the actuating element has at least one small projection which extends beyond the casing part to below the edge of the protective cap.

For the purposes of the invention, pressurized gas packages, in particular aeroseal compressed gas packages, are understood as meaning containers which are capable of receiving a filling material and a propellant, wherein the contents and propellant are jointly or separately, e.g. in separate chambers within the container (e.g., bag-in-can system). The container is closed by a lid member, which is crimped or pressed circumferentially with the container wall, so that an annular Wufstbereich forms. The lid member carries in the center of its surface a valve which to

Issue of the aerosol or the filling material is used.

The spray cap according to the invention has a more or less cylindrical shell part, which is fastened by means of locking elements or equivalent aids on the annular bead of the aerosol container. In the center of the coat tee is a

Actuator arranged, which in conjunction with the valve of the

Compressed gas packing is the triggering device and has at least one channel inside, which directs the exiting the valve aerosol or filling material to the nozzle opening, from where it enters the environment. The actuating element is connected to the casing part so that a folding movement of the actuating element can take place in the casing part. The connection is preferably designed as a hinge or film hinge. The actuating element also has an actuating surface on the side facing away from the Ventitanschluss. If pressure is exerted on the actuation surface, a vertical displacement (inward folding) of the actuation element occurs within the casing part and thus leads to the opening of the valve and thus to the discharge of the contents from the nozzle opening.

In the area of the spray opening, the jacket telet may be broken, so that there is no obstruction of the aerosol output or product output.

The spray cap according to the invention has a covering device (protective cap) which, in the closed state, covers the actuating element (closed position) and at least partially overlies the upper edge of the jacket part: or engages over. The covering device is with the jacket! connected so that the cover can be removed with little effort, but does not solve by itself.

The cover protects in the closed state against unintentional actuation of the actuating element. When the cover device is removed, a pressing of the actuating element is readily possible.

It is advantageous if the projection on the actuating element, the junction of the actuating element with the shell part opposite. It is particularly advantageous if the casing part has a recess / indentation / depression in the region of the projection, so that the actuation, that is to say pushing in, of the actuating element is not prevented.

In a special particularly advantageous embodiment, the actuator cover device with the Manteltei! connected in a wider area, this connection having the function of a tamper-evident closure and exists only until the first use.

It is advantageous according to the invention to carry out the connection of the actuating element and the jacket part so that the connection builds up a spring tension, so that the

Covering device is pulled in the closed and / or open position and in the dumping from the rest positions overcoming a small counterforce is necessary.

It is advantageous if the output channel and the nozzle opening are integrated into the actuating element. In a particularly advantageous embodiment, the actuating surface of the

Actuating the spray cap on a smooth surface, but is structured, in particular by nubs, notches, grooves, notches or the like.

It is advantageous if the actuating surface in whole or only the connection of

Actuating surface and shell part made of a thermoplastic elastomer, in particular PE, EPDM, silicone and / or polyurethane.

A particularly advantageous embodiment of the spray system according to the invention is characterized in that the spray cap is produced in a two-component injection molding process. It is also possible to overmold a previously inserted in the injection mold part with a second component.

The spray cap consists of a thermoplastic material, preferably made of PE or PP. Furthermore, PS, SAN, ABS, PA, POM or other mass plastics can be used, the actuating surface is made of a soft synthetic material with high resilience, for example of a thermoplastic elastomer, preferably based on PE or EPDM. Silicones or polyurethanes can also be used.

The connection between the spray cap and the compressed gas package in the region of the neck can be formed in the form of a flanged edge on the compressed gas package over which the spray cap snaps. A variant of this is when the spray cap engages due to a projection or a groove on the compressed gas package.

Under the spray cap, the previously known spray mechanisms can be used, so that existing production plants do not need to be converted for this purpose. For example, the common spray cans with poppet valve can be used as compressed gas in conjunction with the spray cap according to the invention.

The systems used for mounting the spray cap on the aerosol container, when mounting inventive spray caps larger forces for

Apply pressure / bounce without running the risk that the actuator folds out of the shell part and thus does not sit on the valve. The invention makes it possible to achieve higher clock rates during assembly, which reduces the assembly costs. Material costs are not increased in spray caps according to the invention, as can compensate for the more material for the projection on the actuator over the saving of material for the indentation in the shell part. In the following, the spray cap according to the invention and the thus obtainable

Aerosol dispenser described using an exemplary embodiment. However, the invention should not be limited to the Ausführungsbetspiel, which is only for visual

Support the description.

The following reference numbers are used:

1. spray cap

2nd jacket part

2.1 Hinge (movable connection between casing part and actuating element)

2.2 recess in the shell part

3 actuator

3.1 projection on the actuator

3.2 actuating surface

3.3 output channel

4 protective cap

FIG. 1 schematically shows a possible embodiment of a spray cap 1 according to the invention. FIGS. 1a and 1b show the relevant detail of FIG. 1 in two embodiments. To a cylindrical shell part 2, an actuating element 3 is connected via a film hinge 2.2 pivotally. The actuating element additionally has a securing web (not visible), which serves as a tamper-evident closure. The

Actuating element 3 has a projection 3.1 on the side opposite the hinge 2.2. The projection 3.1 is dimensioned so that he over a

corresponding recess 2.4 in the shell part 2 comes to rest (Figure 1 a) or up to the shell part zoom projects (Figure 1b).

In Figure 1a, the recess 2.3 is disposed in the region in which the protective cap 4 is detachably connected to the shell part 2 and is dimensioned so that the

Actuator 3 can lower and thereby the projection 3.1 does not touch the jacket when a force acts on the actuating surface 3.2 for the purpose of spraying.

In Figure 1 b, a version is shown, in which you the projection 3.1 within the

Cantelteiis can pivot without touching the coat and so no recess is needed. When attached protective cap 4 is in both versions 1a and 1b, if no force is exerted on the actuating surface 3.2, a swing out (and thus the break of the securing web 2.3) of the actuating element 3 from the shell part 2 is prevented because the protective cap 4th against the projection 3.1 presses.

By the projection 3.1 a folding up of the actuating element is prevented during assembly, since the movement is prevented by that the projection is held by the protective cap in its position. Likewise, the free mobility of the actuating element for the spraying process is made possible.

Claims

claims

1. Spray cap for attachment to a compressed gas package having

- A jacket part and

a Betätigungsseiement with an actuating surface for triggering the

spray mechanism,

- Whose casing part and actuator are movably connected and

- Wherein the connection between the actuating element and the casing part allows a folding movement,

- a protective cap

- Wherein the protective cap is held on the casing part and spans the actuating element

characterized in that

the actuating element has a projection arranged at a distance from the casing part and the actuating element,

- Wherein the projection protrudes under the edge of the protective cap.

2. Spray cap according to claim 1, characterized in that the casing part has a recess or countersinking in its periphery, wherein the projection is arranged above the indentation or lowering and wherein the indentation or lowering of the casing part is made so deep that the projection of the area the lowering or indentation not fully touched when fully pressed actuator.

3. Spray cap according to claim 1, characterized in that the connection between the casing part and the cover element is designed as a hinge or film hinge.

4. Spray cap according to claim 1, characterized in that the actuating element has a channel with nozzle opening.

5. Spray cap according to at least one of the preceding claims, characterized

in that the projection is opposite the connection point of the actuating element with the jacket part.

6. Spray cap according to at least one of the preceding claims, characterized

characterized in that the actuating element is connected to the shell part in a further Bereic via a fixed web, said compound inherent to the function of a tamper-evident closure and consists only until the first use.

7. Spray cap according to at least one of the preceding claims, characterized in that the connection of the actuating element and Manteiteil is designed so that a spring tension builds up, whereby the actuating element is pulled into the closed and / or open position and during the pivoting from the rest positions and / or open position overcoming a small counterforce is necessary.

8. Spray cap according to at least one of the preceding claims, characterized

characterized in that the actuating element is structured, in particular by nubs, notches, grooves, notches or the like.

9. Spray cap according to one of the preceding claims, characterized in that the spray cap consists of a thermoplastic material, in particular PE, PP, PS, SAN, ABS, PA and / or POM.

10. Spray cap according to one of the preceding claims, characterized in that the actuating surface in whole or only the connection of actuating surface and casing part consists of a thermoplastic elastomer, in particular of PE, EPDM, silicone and / or polyurethane.

1 1. Spray cap according to one of the preceding claims, characterized in that the spray cap is produced in a two-component injection molding process.