DE3243795A1 - Sealing cap for pressurised containers - Google Patents

Abstract

In a sealing cap for pressurised containers, such as champagne bottles and the like, which has a mushroom shape and is made from aluminium or aluminium alloys and serves to seal commercially available glass champagne bottles, in particular with a capacity of more than 0.5 l, an aluminium seal is to be produced which is absolutely gas-tight and readily re-usable and which, even at a high internal pressure, allows opening with a sudden pressure reduction. According to the invention, this is achieved when the sealing cap consists of a mushroom cap (3) made from aluminium, to which there is attached a mushroom stem (4) which has on the section (B) pointing towards the bottle opening a sealing surface (6), and on the section (A) pointing towards the bottle interior a serration (5). <IMAGE>

Description

Closure cap for pressure vessel

The invention relates to a closure cap for pressure vessels such as champagne bottles or similar in mushroom shape made of aluminum or aluminum alloys to close commercially available Champagne bottles made of glass, especially with a container size of over 0.5 1.

So far, plastic closures have been used to close champagne bottles or cork stoppers are used. These have the disadvantage that they are not absolute are gas-tight, because after a long time both with plastic and with natural cork Gases and aromatic substances can escape from the champagne bottle.

It is also known, for bottles that are under low gas pressure, Use aluminum screw caps.

For example, it is common for lemonade bottles to have an aluminum cap to be used with an internal plastic seal, which should be screwed on presses the mouth of the bottle and thereby a gas-tight, reusable closure enables. This closure is used for bottles that are under high internal pressure but unsuitable. When opening, liquid escapes or

Foam past the edge of the bottle and runs over the hands and outside of the bottle.

The object of the present invention is therefore to provide an absolutely gas-tight and to develop easily reusable aluminum caps for champagne bottles, which allows opening with a sudden pressure reduction even at high internal pressure.

According to the invention this is achieved by a champagne cap in the shape of a mushroom, The mushroom base is made of plastic or cork and is attached to an aluminum mushroom hat connected is. The mushroom hat has a thread and one in the area of the bottle mouth Sealing surface on. To improve the grip of the fastener, it is on the outside covered with a plastic cap, which is firmly connected to the aluminum mushroom hat is.

The advantage of the closure according to the invention is that when unscrewing the pressure reduction occurs suddenly, as with the previously known Champagne corks. The plastic mushroom base, the has a corrugated or rolled wall in section A and in section B rests sealingly on the inside of the bottle neck. This seal is, however not gas-tight, but only blocked against the passage of liquid.

The actual gas seal takes place in section C of the bottle mouth, where the closure according to the invention made of aluminum with a thin plastic layer is provided.

The connection between the mushroom base and the mushroom cap is positive by rolling or turning the aluminum inside a suitably preformed plastic part of the mushroom foot.

Rolling in is the preferred working method because it follows using the same tool, the thread was formed in the lower section of the mushroom cap can be. The plastic mushroom cap is usually placed on the aluminum mushroom cap attached by clamping or gluing.

When opening the champagne cork according to the invention escapes even at high Do not press any liquid or foam inside the bottle past the mushroom base the outside of the bottle.

Only when the last thread turn is exposed does a more sudden Pressure reduction and thus at the same time a sudden escape of the foam or the liquid, as has been the norm when opening champagne bottles with natural corks was. The operator's hands stay dry as the foam comes out of the bottle neck escapes under pressure and is not deflected sideways onto the hands by the closure will.

It is particularly advantageous that the bottle closure according to the invention is reusable. After the bottle has been partially emptied, the mushroom foot can be screwed tightly back into the bottle. The required contact pressure is applied via the external thread on the aluminum mushroom hat. Even if the bottle is shaken in the half-emptied state and thus a high internal pressure with If there is heavy foam formation, the bottle can be opened again without any problems and emptied without splashing the foam. This is due to that the double seal on the mushroom base prevents the foam from escaping prematurely.

In the following the invention is based on an exemplary embodiment explained in more detail. In the figure is the upper part of a bottle neck with a bottle neck according to the invention Bottle stopper (partially cut) shown.

On the bottle neck 1 is the mushroom hat 3 made of aluminum with a thread 2 screwed on. A mushroom foot 4 can be seen on the inside of the bottle neck, which has a corrugation 5 in section A and a sealing surface 6 in section B.

In section C of the mushroom cap 3 is a plastic sealing surface 7 provided. Mushroom hat 3 and mushroom foot 4 are at the head end 8 by rolling together tied together. On the outside, the mushroom hat 3 is covered with a plastic cap 9. This is firmly connected to the aluminum mushroom hat 3 on support surfaces 10, 11.

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Claims (5)

P a t e n t a n s p r ü c h e 1. Sealing cap for pressure vessel such as champagne bottles or the like in mushroom shape, characterized in that the closure cap consists of a mushroom hat (3) made of aluminum to which a mushroom base (4) is attached, the section (B) facing the bottle mouth has a sealing surface (6) and has a corrugation (5) on the section (A) facing the inside of the bottle. 2. Closure cap according to claim 1, characterized in that the Mushroom hat (3) has a thread (2). 3. Closure cap according to one of the preceding claims, characterized characterized in that the mushroom cap (3) in section (C) has a plastic sealing surface (7). 4. Closure cap according to one of the preceding claims, characterized characterized in that the mushroom hat (3) and the mushroom base (4) at the head end (8) by rolling are connected to each other. 5. Closure cap according to one of the preceding claims, characterized characterized in that the mushroom hat (3) is covered with a plastic cap (9), which is firmly connected to the aluminum mushroom hat (3) via support surfaces (10, 11).