Rinsable bottle cap seal device

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PATENTS AND REGISTRATION OFFICE

<td colspan="2">PUBLISHING POSITION no int C. B 65 d 41/32</td><td> 362 048</td>

<td colspan="2">Patent Application. No. 14204/70 received it</td><td>21 X 1970</td>

<td>Validity Day on</td><td> 21</td><td>X 1970</td>

<td>Ans. widely available on</td><td> 22</td><td>IV 1971</td>

<td>Ans. published and the pamphlet published on it</td><td> 26</td><td>XI 1973</td>

Priority strengthened from 21 X 1969 (Switzerland, 15 732) and 2 IV 1970 (Federal Republic of Germany DT, 20 15 779)

SEGMULLER AG, STEIN / RHEIN, SWITZERLAND Inventor: B Segmiiller, Stein / Rhein Agent: I Bergensträhle

Flushable bottle seal

The present invention relates to a flushable bottle closure of resilient material, with a closure cap which shows an inner bead intended to grip under an outer bottle bead provided at the opening of the bottle, and with a tear-off warranty band attached to the bottom edge of the closure cap, bottle forms a cavity with the bottle.

The hitherto known plastic closures for bottles, which are filled with liquid and under a tapping pressure, have the disadvantage that, unlike metal closures of the prior art (crown cork, etc.), they are not suitable for mechanical tapping and cleaning, do not withstand The tapping pressure during transport is difficult to open and cannot be used as a guarantee seal.

It is therefore an object of the invention to provide a bottle closure of elastic material which does not exhibit the above-mentioned deficiencies.

It must thus be able to be mechanically sorted, aligned, mounted and cleaned from tapping excess after application, additionally having as high pressure resistance as possible, be used as a guarantee closure and also be easy to open and close.

The above-mentioned object is achieved by obtaining a flushable bottle closure according to the invention with the features of claim 1.

A further development of the bottle closure according to the invention is characterized in that the safety band is provided with axial strips at the inside and the closure cap at its circumference is provided with grooves which hum in the free space at the inside of the safety band surrounding the strips ·

The bottle closure advantageously consists of a resilient, resilient material preferably of thermoplastic. As such, suitable are, for example, polyethylene, polypropylene, polyamide and plasticized polyvinyl chloride.

In the following, the bottle closure according to the invention is explained in connection with the drawings by way of example.

In the drawings, Fig. 1 shows the bottle closure mounted on a bottle in perspective, Fig. 2 shows the same closure from above, Fig. 3 the closure in axial section along the line III-III in Fig. 2, the left half of the figure showing the empty closure and the Fig. 4 shows a detail of Fig. 3 on a larger scale than this; and Fig. 5 shows an axial section through a similar bottle closure loosely attached to a bottle.

In Fig. 1, the bottle closure 1 attached to a bottle 22 is shown in overview. It is made of a closure cap 2 and the peel-off safety band 3. At the lower edge of the closure hood 2 the lateral impression nose 4 is arranged. The security band 3 passes into the tear-off tab 5, which, with its upper inner edge, at a number of points is easily releasably connected to the lower outer edge of the impression nose.

When the bottle 22 is to be opened, the end of the flap 5 in the left-hand end of the flap 5 is lifted off and the flap is torn off the impression nose 4 and in addition, the safety band 3 is pulled from the circumference of the bottle neck and separated from the closure hood 2. Subsequently, pressure can be removed from the flask nose from below the flask nose.

According to Figures 2 and 3, the cover portion 14 of the cover 2 is formed only in its outer, annular portion, while the inner circular center piece 17 is domed inwardly. The side wall of the cap 2 is provided with a circumferential inner bead 10, which interferes with the bottle bead and thus holds the cap of the bottle.

Further, at the cap lid 14, there is an inwardly directed, annular insert portion 15 with a circumferential outer bead 16, thereby further enhancing the cap sealing and adhesion to the bottle, since the bead 16 is sized so that it is pressed from the inside toward the bottle mouth. The insert portion 15 comprises the concave central portion 17 of the lid portion. The center piece 17 passes through a support edge 20, the upper side of which forms an inclination angle of about 35-55 °, for example 45 °, towards the center axis of the hood, in the flat part of the lid 14. Thereby, the concave centerpiece with its peripheral edge 1Ö (Fig. 3) is recessed in relation to the insertion portion 15. At the outer circumference of the insertion part there is, immediately below the flat part of the lid part, an annular lanyard 19, which comprises the edge of the centerpiece 17.

The central portion of the center piece 17 is lens-shaped, as shown in Figures 3 and 5.

By this design of the hood 2 it is achieved that the hood can withstand a high internal pressure without becoming leaky or detached from the bottle. In the case of a strong, internal pressure, the center piece 17 (Fig. 3 to the right) is flattened and transmits radially outward forces on the annular support wall 20 and the plug part 16. Thereby, the outer bead 16 of the insert is pressed firmly against the inside of the bottle orifice, as can be seen from the right-hand portion of FIG. 3, thereby increasing the tightness of the closure and also its adhesion to the bottle.

The peripheral wall of the hood 2 is externally provided with axial grooves 8. As shown in FIGS. 3 and 4, the safety band 3 is connected by a relatively thin intermediate piece 21 to the lower edge of the hood 2 so that it can be tear off relatively easily.

As can be seen in particular from Fig. 3, the safety band 3 is provided at its inside with radial strips 7 so that, with the bottle closure attached, a free space is created at the inside of the belt. This free space is widened upwards, i.e. towards the edge of the hood 2, since the safety band 3 at its inside, along its upper edge, has a bevel 11 which extends into the inside of the intermediate piece 21.

The depths of said grooves 8 are sized so that openings 6 between the lower edge of the cover 2 and the edge of the safety band 2 appear, see in particular Fig. 4 any existing residues of the bulk goods can be removed. In addition, through the free passage channels, which exist between the strips 7, and the openings 6, the flow of air is enabled, so that in the presence of residues of the filling material molding is prevented.

Fig. 5 shows a similar bottle closure with Figs. 1-4, which, in so-called trailing take-over of the filled bottles, is loosely attached to a bottle. The strip 7 thereby provides an explanation of the closure. It can be seen that the lower, radially reinforced ends of the strips 7 grip behind the bottle's bead 23 so that the closure is thereby clamped at the mouth of the bottle. At final mechanical closure, the closure is pressed down by a stamp in a position on the bottle corresponding to the right half of Fig. 3 ·

The impression nose 4 arranged at the side of the hood 2 has a flat portion 24 which is arranged horizontally in relation to the side wall.

A groove for easy lifting is advantageously arranged at the underside of the part 24. The impression nose has side support members 12 which facilitate closure of the flank by the cap 2 after opening the safety closure.

The tear-off tab 5 largely shields the impression nose 4 downwards. This results in the following

The tear-off tab 5 is fixed at the display height of the impression nose 4 and is easy to grip at any time for opening.

Radially arranged on the safety band 3 is the tear tab 5, which advantageously in the immediate vicinity of the impression nose 4 is in communication with the safety band 3. This tear-off tab 5 thus overlaps the safety band 3 along its own length. However, it is arranged so that the top of the tear tab 5, preferably at a number of points, is connected to the bottom edge of the impression nose 4 by means of life 13, with a relatively small cross-section, so that the tear tab can be easily torn off the impression nose.

This advantageous device also prevents the loose bottle closures from being wedged into each other, whereby this type of bottle closure can easily be used in mechanical sorting and bottling plants.

Furthermore, the multiple, point-wise connection between the tear-off tab 5 and the impression nose 4 makes it impossible to remove the hood 2 by hand without destroying the said connection. This means that a guarantee closure has been achieved.