DE8627663U1 - Blow-off bottle closure in cap shape - Google Patents

Description

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The invention relates to a blow-off bottle closure in cap form with or without an internal thread and preferably a circular disk-shaped sealing insert.

It is known that, particularly with hot-filled liquid media, for example with hot-filled fruit juices, unwanted fermentation can occur in the bottle, causing an excess of carbon dioxide pressure in the bottle.

The object underlying the present invention is to enable gas under excess pressure, in particular carbon dioxide gas, to be released for safety reasons while retaining the existing closure, whereby

This blow-off process begins when the internal pressure of the bottle is more than 1 bar, for example between 1 and 4 bar, so that the maximum pressure inside the bottle is, for example, a maximum of ¹ J bar.

This task is to be solved by creating a "one-way valve-like arrangement" in the bottle closure.

According to the present invention, the above-mentioned object is therefore achieved in a bottle closure of the type mentioned at the outset by

that at least one recess is arranged in the edge area of the sealing insert.

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According to a further preferred embodiment, its internal thread is rolled onto the external thread of a bottle neck.

According to a further preferred embodiment, the recess consists of an incision.

A further preferred embodiment is characterized in that three recesses, each offset by 120°, are arranged in the edge region of the sealing insert.

A further preferred embodiment of the invention is characterized _in that the closure consists of an aluminum alloy.

A further preferred embodiment is characterized in that the closure is made of plastic.

A further preferred embodiment is characterized in that the sealing insert consists of an inserted and optionally glued disc.

A further preferred embodiment is characterized in that the sealing insert consists of an injected^

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spun or embossed sealing compound. A further preferred embodiment is characterized in that it is connected via tear-off webs to a known anti-counterfeiting ring (so-called pilverproof closure)»

A further preferred embodiment is characterized in that

characterized by openings in the surrounding shell

are arranged.

A further preferred embodiment is characterized in that the openings are arranged below the upper knurling.

If a gas under excess pressure, e.g. carbon dioxide, develops through fermentation in a bottle filled with hot fruit juice and closed with the bottle closure according to the invention, this gas under excess pressure can escape through the recesses in the sealing insert and then downwards along the threads as soon as the closure surface (= closure cap surface) has formed a curvature (convexity) outwards due to the excess pressure in the bottle.

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Such an increase in internal pressure can also occur, for example, if a bottle contains a liquid saturated with carbon dioxide at a lower temperature and the bottle is then exposed to sunlight (for example when camping) and/or the bottle is subjected to mechanical shocks, which is often the case during transport by car, for example.

In the embodiment in which there are additional openings in the surrounding jacket of the bottle closure and preferably in the area of the cap knurling, the gas under excess pressure seeks its way out preferably through these openings.

The holes also help when opening a bottle under pressure.

The essence of the present invention will now be further explained below with reference to the accompanying Figures 1-4, which show exemplary embodiments.

It shows:

Figure» 1&iacgr; A top view of the circular disk-shaped sealing inserts, which have three

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12o° offset recesses in the form of cuts.

Figure 2: A side view of the bottle closure according to the invention with internal thread with upper and lower knurling.

Figure 3: The bottle closure according to the invention in which openings are arranged in the area of the upper knurling.

Figure 4: A side view of a partially broken bottle closure, with the disc-shaped sealing insert having a cut.

In all figures, the same elements are provided with the same reference symbols.

In Figure 1, the circular disk-shaped sealing insert is provided with the reference number 1 and the incisions, each offset by 120°, are provided with the reference numbers 2 ¹ , 2" and 2'".

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In Figure 2, the entire bottle closure is designated by the reference numeral 3, the internal thread by H, the upper knurling of the circumferential jacket by 5 and the lower knurling by 6.

In Figure 3, the entire bottle closure is again indicated by the reference number 3, the

The lower knurling is marked with 6 and the upper knurling with 5; the openings (=holes) 7 are arranged below the upper knurling 5.

In Figure ¹ J ifafc, 3 again designates the entire bottle closure, 6 the lower knurling, 5 the upper knurling and, in the broken-open area, the sealing insert 1 arranged below the surface 8 of the bottle closure, which has the openings 2'.

In most embodiments made of aluminum, the bottle closure according to the invention in cap form does not have an internal thread until it has been rolled onto the external thread of a bottle neck.

In contrast, most embodiments of the bottle closure according to the invention, which are made of plastic, also have

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an internal thread before applying it to a bottle neck.

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Claims (1)

- 1 A_n_s_p_r_ü_c_h_e 1. Blow-off bottle closure in cap form with or without internal thread and preferably circular disc-shaped sealing insert, characterized, that at least one recess (2 ¹ ) is arranged in the edge region of the sealing insert (1). 2. Bottle closure according to claim 1, characterized in that its internal thread is rolled onto the external thread of a bottle neck. 3- Bottle closure according to claim 1 or 2, characterized in that the recess (2') consists of an incision. ¹ J. Bottle closure according to claims 1 to 3, characterized in that three recesses (2 ¹ ; 2";2"') each offset by 120° are arranged in the edge region of the sealing insert (1). «4* «4 44 « i ' * «*4 4 4 Hi tti ■ · · · in &igr;&bgr;&agr; · 1 · · *·«■ · f a 5. Bottle closure according to claims 1 to 4, characterized in that the closure consists of an aluminum alloy. 6. Bottle closure according to claims 1 to 4, characterized in that the closure is made of plastic. 7. Bottle closure according to claims 1 to 6, characterized in that the sealing insert (1) consists of an inserted and optionally glued disc. 8. Bottle closure according to claims 1 to 6, characterized in that the sealing insert (1) consists of an injected, spun or embossed sealing compound. 9. Bottle closure according to claims 1 to 8, characterized in that it is connected via tear-off webs to a known anti-counterfeiting ring (so-called pilverproof closure). < I I · 1 · I III II·· ·· I ItIII I* · · · · III Cl I I I · · · I < t t I (Ct ·■ ··« ·| et Ct 1&ogr;. Bottle closure according to claims 1 to 9 j , characterized in that openings (7) are arranged in the circumferential jacket. Tt. Bottle closure according to claim 1o, characterized in that the openings (7) are arranged below the upper knurling (5).