DE8801748U1 - Plastic guarantee ring for metallic screw caps - Google Patents

Description

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The invention relates to a plastic guarantee ring for metal screw caps of bottles and similar containers with a threaded neck part.

Bottles or similar containers which have a threaded neck and are filled with a consumable medium should be closed _in such a way that the originality is recognizable, &Lgr; U Ai** ClnnstWj» sts^Airt Aa ta «viatrtW&ntlipa ßohäif &eegr;&idiagr;&ogr;&agr;&agr;/*&ngr;&Iacgr;&Iacgr;&ogr;&eegr; o{ no

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Have a closure cap that allows the consumer to control when the container is opened for the first time.

There are closure caps that are damaged when the container is opened, but are either made entirely of plastic, so that the closure quality is not satisfactory when the container is under pressure, or when metal screw caps are used, these have scabby metal shavings in the intended damage zone for the consumer when opening them, which can cause injuries.

The invention is therefore based on the object of providing a plastic guarantee ring for metal screw caps of bottles and similar containers with a threaded neck part which is designed in such a way that it is damaged in the area of arranged weakening zones during the first opening process and thus allows the consumer to check the originality and the first opening, whereby the structural design of the guarantee ring is designed in such a way that it also optimally seals containers under pressure

This is achieved according to the invention in that the plastic guarantee ring mentioned at the beginning for metallic screw connections

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Closures of bottles and similar containers with a screw neck part, characterized in that the plastic sealing ring surrounding a screw cap provided with a sealing insert is Z-shaped by means of hooks arranged in opposite directions, the upper hook part and the lower hook part being connected by means of webs and the upper hook part having a semicircular indentation which receives the outwardly rolled bead of the closure cap, while the lower hook part preferably has one or more weakening zones,

that a tear line is formed by the webs and recesses in the connection zone of the upper hook part and the lower hook part,

that the upper edge of the obliquely upwardly directed lower part of the bottle forms a stop surface for the threaded neck taper of the bottle and,

that the weakened zones of the lower hook part are formed by means of material recesses.

The invention will now be explained in more detail with reference to the accompanying drawing, which shows a particularly preferred embodiment of the invention.

Figure 1 shows a bottle 14 with a threaded neck part 15 onto which a screw cap 2 is rolled by a process not described in detail here.

A special feature of the invention is that the outwardly rolled bead 8 of the screw cap 2 is positively received in the semicircular recess 7 of the upper hook part U of the plastic ring 3.

By means of the webs 6, the upper hook part 4 and the lower

The lower hook part 5, which is directed obliquely upwards, forms with its upper edge 12 a stop surface for the thread neck taper 13. In the area of the webs 6 and recesses 10, a tear line 11 is formed, which is also a weakening zone like the one in the lower
Hook part 5 marked with the reference number 9
represents a weakened zone.

During the opening process, the screw cap is rotated radially and moves upwards in direction A, separating the upper hook part 4 and the lower
Hook part 5 in the area of the tear line 11.

Damage also occurs in the area of the weakened zone 9 of the lower hook part 5.

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List of reference symbols

1 sealing insert

2 screw cap

3 Plastic guarantee ring

4 Upper hook part

5 Unceres hook part

6 Bridge

7 Semicircular recess

8 bead

9 Weakness zone

10 Recess

11 Tear line

12 Upper edge of the lower hook part

13 Thread neck taper

14 Bottle

15 Threaded neck

Claims (4)

&bull; ···· did claims 1. Plastic guarantee ring for metal screw caps of bottles and similar containers with a threaded neck part, characterized, that the plastic guarantee ring (3) surrounding a screw cap (2) provided with a sealing insert (1) is Z-shaped by means of hooks (4, 5) arranged in opposite directions, the upper hook part (4) and the lower hook part (5) being connected by means of webs (6) and the upper hook part (4) having a semicircular indentation (7) which receives the outwardly rolled bead (8) of the closure cap (2), while the lower hook part (5) preferably has one or more weakening zones (9). 2. Plastic guarantee ring for metal screw caps of bottles and similar containers with a threaded neck part according to claim 1, characterized, that a tear line 1) is formed by the webs (6) and recesses (10) in the connection zone of the upper hook part (4) and the lower hook part (5). 3. Plastic guarantee ring for metal screw caps of bottles and similar containers with a threaded neck part according to claims 1 to 2, characterized, that the upper edge (12) of the obliquely upward directed lower hook part (5) a stop surface to the thread ·· ·· &igr;>>&igr;&igr;»&igr; » J · I» I till <■! neck taper (13) of the bottle (14). 4. Plastic guarantee ring for metal screw caps of bottles and similar containers with a threaded neck part according to claims 1 to 3, characterized in that that the weakened zones (9) of the lower hook part (5) are formed by means of material recesses.