DE7520345U - Cap for aerosol cans or the like - Google Patents

Description

G 10 809 Gm

Walter DRISSEN, 4100 D UI SBURG , Wanheimerstr. 376

Cap for aerosol cans or the like.

The invention "relates to an on aerosol cans od. Like. slip-on cap.

It is known that the dispensing opening of an aerosol can closing by means of a valve on the upper End of the can to be attached, for example a cylindrical cap to cover this valve during during transport and storage to protect against undesired actuation. Such caps also wear contribute to the external design of the aerosol cans, can carry and prevent labels or other advertising material moreover, that in the event of an undesired leakage of the can, the agent held in it under pressure is released in an uncontrolled manner.

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The "known sealing caps of aerosol cans are so far they are made of plastic, manufactured by injection molding. For the production of the caps are therefore relatively expensive injection molding tools are required, the costs of which are only amortized if the Caps are manufactured in large numbers unchanged. Even when minor changes are necessary, "for example if a lettering that is to be embossed in the cap or is raised on the cap has been changed must be, there are relatively high additional tool costs. "Another disadvantage" is that that a relatively large amount of material is required for the caps, which should not be underestimated for large quantities Is the cost factor. Yet another disadvantage is seen in the fact that the known closure caps for aerosol cans not or only with difficulty can be printed, so that you can use them for a colored design accordingly must inject colored plastic. Therefore, the caps of aerosol cans are generally made of white plastic made to give them a neutral coloring. Insofar as they are used as a carrier for colored advertising, you limit yourself to sticking on labels, which is expensive to manufacture and cumbersome to apply is.

Yet another disadvantage of injection-molded closure caps for aerosol cans is seen in that there is always an injection point on the outside of the cap, which may be so hard and the point is that it can lead to injury. Finally, there is a disadvantage of the known closure caps for Aerosol cans still in the fact that the ventilation opening that may be necessary is located in the top surface, so that When the can leaks, the inside of the can under pressure

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standing material escapes upwards from the closed can and flows uncontrolled into the environment and can cause damage there.

The object of the invention is to create a possibility which, for example, is intended for aerosid cans To be able to manufacture sealing caps inexpensively and without the use of expensive tools.

To solve this problem, a cap is proposed according to the invention, which is made of deep-drawn plastic consists, for example, of an extruded plastic film. But it can also be made from plastic granules been manufactured by the injection molding deep drawing process being. '

The invention makes it possible to use relatively simple tools on aerosol cans or similar containers clip-on caps using the least amount of material possible with any Manufacture molds because the pressures required to deform a film to be deep-drawn are essential are lower than the pressures occurring during injection molding. The surface of such closure caps has no undesirable protrusions such as sprue tips. It is also possible to print these caps directly, which can be done practically in one go with the deep drawing * so that markings can be made or other advertising material on the caps does not require any special and costly operations.

These caps can be frustoconical or cylindrical be designed, but it is also possible to make the caps widening towards their closed end or give them a wavy or of the usual circular

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-A- shape to give a different cross-section.

According to a further feature of the invention, the Cap at its open end an outwardly protruding, circumferential cylindrical shoulder as a support on the Aerosol can or similar container. The cap is even useful with a double cylindrical shoulder. At least one air hole is provided in the area of the shoulders for ventilation ensure along the outer surface of the can for emergencies.

According to yet another feature of the invention, the cap includes at least three in the area of the inner shoulder Embossed Vorf, prünge, which are produced during deep drawing and the support of the cap on the upper edge serve as an aerosol can, with a free space remaining between these projections, which acts as a ventilation opening can be viewed. Such a cap therefore has between two adjacent to each other lying support elements has a ventilation opening and is accordingly provided with numerous ventilation openings.

In the drawing is an embodiment of an inventive Closure cap for aerosol cans shown, namely shows

Fig. 1 is a side view of the entire cap and

FIG. 2 shows a partial section through the closure cap on an enlarged scale compared to FIG.

The closure cap 1 is made in one piece from a plastic

material-

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Foil deep-drawn and has a conical section with a closed top surface 3 and at the open end with two shoulders 4 and 5 which are stepped against each other.

The conical part 2 can be varied slightly both in its height and in its shape and can even be cylindrical or be designed to be counter-conical. It can also be made with embossments or depressions formed during deep drawing provided or printed on it immediately after the deep-drawing process.

The essentially cylindrical inner shoulder 4 contains several distributed over its circumference during deep drawing Embossed tops 6, which serve as a support on the neck of an aerosol can 7, as can be seen in detail from FIG is.

The aerosol can 7 is only indicated in FIG. 2 and can also have other shapes for the neck than those shown there exhibit. In general, however, the HeIs is as in Figure 2 indicated, tapers, so that the cap that can be plugged onto the same has a contour that at least initially is perceived as an extension of the can body.

From Figure 2 it can be seen that the knobs 6 are embossed into the shoulder 4 during the deep-drawing process that they are in pass over the outer shoulder 5 without a step. This avoids sharp-edged sections.

The invention provides a very inexpensive closure cap for aerosol cans which is essential less material expenditure than known, injection-molded closure caps can be produced, woVvI!:

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Tools required for the deep drawing process too are much simpler and therefore cheaper than the tools required for injection molding. The forms of this Closure caps can be changed quickly with relatively little financial outlay, without any need for a economic amortization very large numbers would have to be driven. The cheaper manufacturing option is therefore not outweighed by a lower quality of the product.

Protection claims ;

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Claims (6)

I suffered G 10 809 Gm Walter DRIESEM, 4100 Duisburg, Wanheimerstr. 376 Sohutz claims: 1.) Cap for aerosol cans or the like., As a result marked that they are made of deep-drawn Made of plastic. 2.) Cap according to claim 1, characterized in that it consists of an extruded, deep-drawn plastic film consists. 3.) Cap according to claim 1 or 2, characterized in that it has an outwardly at its open end has protruding, circumferential cylindrical shoulder (4; 5) as a support on the aerosol can (7). £,) cap according to any one of claims 1 to 3, characterized in that it is a double cylindrical Has shoulder (4; 5). 5.) Cap according to one of claims 1 to 4, characterized in that it is in the area of the shoulders (4; 5) is provided with at least one vent hole. 6.) Cap according to one of claims 1 to 5, characterized in that it is in the area of the inner Shoulder (A) at least three embossed protrusions (6) Contains, between which-vents remain free. 7520345 11/06/75