EP1140646B1 - Hinged closure with tamperproof element - Google Patents

Description

The present invention relates to a plastic closure consisting of a lower part and one over it Hinge axis connected cover, as well as an integrity guarantee element.

Integrity guarantee elements on hinge locks Plastic has been known for many years. You are supposed to be one provide a high level of security for consumers by they clearly visible the integrity of the closure and thus the content in the container protected by the closure will make visible. There are a lot of them different variants known. Most closures so-called in particular on plastic containers bounced and can not be practically non-destructive remove from the container. With such closures, however also ensure that the lid in front of the First use has not already been opened and therefore one Part of the content removed or third substances added have been.

Such integrity elements are most common in Form of guarantee tapes has been realized. Already from the US-A-4,487,324 (Ostrowsky) is a plastic closure of the initially mentioned type with integrity guarantee element known. As a guarantee of integrity element is here one piece on the lower part of the closure and extending more than half the circumference Guaranteed tape arranged with the predetermined breaking points Lower part is connected. The on a swivel hinge on The lower part of the cover, which is arranged to move, has a circumferential design different cam-like protrusions between the Break in the guarantee band under predetermined breaking points. The The main problem of such and similar guarantee elements exists in the fact that the guarantee band is closed the first time is often destroyed. There was a high reject rate accordingly the sequence and a fully automatic Such closures could only be closed with a great deal realize high cycle times. The economy was thereby practically lost.

Only through the solution according to US-A-4,696,408 (W.F. Dubach according to EP-B-0'210'138) a solution was shown, which allowed an improved automatic closing. This was realized by a guarantee band, which at least about its material thickness and the length of the predetermined breaking points protrudes upwards over the circumference of the lower part. The The guarantee band itself extends to a maximum of half of the Circumference of the closure. On the one hand by the amount of Guarantee band and on the other hand by reducing the Wrap angle has been significantly improved automatic closure of such closures enables.

US-A-5'392'938 (W.F. Dubach, corresponding to EP-B-0'537'324) first showed hinge locks where the Integrity guarantee element as a band on the cap was ordered. Such closures are true Particularly complex in terms of production technology, but result again a lower number of rejects when closing the Closure. A technical reason for this is practically incomprehensible.

Instead of guarantee bands there are also other forms of Integrity guarantee elements are known. For example a plastic closure from Expan is on the market known, the one piece on the lower part of the closure molded, vertically standing hook element shows which is closed when a pusher is closed for the first time Lid engages in a corresponding opening and at first use is separated from the lower part. This A somewhat exotic example is extremely technical in terms of production complex and imperatively encourages gradual closure and demolding of the closure already in the Production mold. This can be done with tools at sixteen or practically no longer realize more cavities.

The production of closures with high quantities comes out of the question for this solution. Add to that a such guarantee element is not particularly clear optically is recognizable. The consumer becomes when he is not extremely carefully inspects the goods, can hardly determine whether a Container has already been opened. Appropriately a substantial part of the guarantee effect has been lost.

This is done much better with the closures according to US-A-5,497,906. These closures have an in on the top surface of the lid arranged breakout seal. After the first opening of such a closure the lid has a clearly recognizable hole. Despite the technical ingenuity and the multitude of design options this lock could get on the market don't claim. This should not least justify this be that the clearly visible opening in the lid for the Consumers gave the impression of a leaky, broken one To have a lock in front of them.

From the recently published US-A-5'829'610 is a Plastic hinge lock known as Guarantee element a separately made on the lid of a hinge latch held, the can be locked behind with elements on the lower part. Neither can it be clearly recognized whether it is being used for the first time has taken place, is still the malicious opening and Resealing impossible. The solution is also capable not meeting the aesthetic requirements. The Arrangement of the bolt with a barb must work together also limits the freedom of design enormously.

Practically all closures available on the market today with integrity guarantee element are manufacturing technology problematic and require extremely expensive tools. In particular, compared to the corresponding jacket walls above guarantee tapes, in order to be removed from the mold, by half-shell-shaped sliders during demolding get supported. These injection molds are corresponding extremely expensive, complex and subject to high wear. The cup-shaped sliders also tend to get under to deform the influence of heat. This means that at Manufacture the rolling direction of the steel used must also be taken into account.

Ultimately, the hinge locks are also out Plastic places ever higher aesthetic demands. For example, one trend can be identified, the two-tone one Makes closures desirable. This requires so-called two-component injection molding machines which are extremely expensive and for which there are still relatively few possible uses.

It is therefore the object of the present invention, a Swivel hinge lock made of plastic according to the generic term of claim 1 to create the extremely inexpensive simple forms and correspondingly short Clock sequence can be injected without losing a high To have to accept rejects rate. It is another Object of the present invention, a plastic closure to create its integrity guarantee element may have a different color than the rest of the closure and thus increased individualization and one has improved visual control for the consumer.

It is another object of the invention to find a solution to show that allows a particularly large number of embodiments and still a certain standardization of Plastic closures allowed.

A hinge lock triggers all of these tasks Plastic with the features of claim 1.

Figur 1

einen vertikalen Axialschnitt durch einen Scharnierverschluss mit einem geschlossenen, umlaufenden Unversehrtheitsgarantieelement und

Figur 2

denselben Verschluss in der Seitenansicht und

Figur 3

in Aufsicht, während

Figur 4

ein Detail dieses Kunststoffverschlusses in grösserem Massstab im Schnitt darstellt.

Figur 5

zeigt eine zweite Variante eines Kunststoffverschlusses mit Unversehrtheitsgarantieelement wiederum als axialen Vertikalschnitt und

Figur 6

in der Seitenansicht, während

Figur 7

das Unversehrtheitsgarantieelement mit Halteteil für sich allein darstellt.

Figur 8

zeigt denselben Kunststoffverschluss nach der Entfernung des Unversehrtheitsgarantieelementes.

Figur 9

zeigt ein vergrössertes Detail des Unversehrtheitsgarantieelementes und des Halteteiles, während

Figur 10

ein Detail desselben Verschlusses in grösserem Massstab darstellt.

Figur 11

zeigt schematisch ein weiteres Beispiel eines Kunststoffverschlusses mit Unversehrtheitsgarantieelement, wobei dieses spangenförmig gestaltet ist, hier vor der Montage und

Figur 12

im montierten Zustand von oben und

Figur 13

in der Seitenansicht.

Figur 14

zeigt ein weiteres Beispiel eines Kunststoffverschlusses im offenen Zustand mit einem separaten, spangenförmigen Unversehrtheitsgarantieelement, welches im Verschlussinnern angeordnet werden kann.

Figur 15a

zeigt denselben Verschluss im montierten, unversehrten Zustand als Teilschnitt in einem grösseren Massstab, während

Figur 15b-d

andere Querschnittsvarianten der Unversehrtheitsgarantieelemente nach demselben Prinzip wie ein Figur 15a dargestellt, zeigt.

Figur 16

zeigt eine Seitenansicht eines Kunststoffverschlusses, bei dem ein vollständig umlaufendes, ringförmiges Unversehrtheitsgarantieelement vorhanden ist.

Figur 17

zeigt eine mögliche Gestaltungsform der Solltrennstellen zur gewünschten Zerstörung des Unversehrtheitsgarantieelementes, während

Figur 18

eine Variante davon darstellt.

Figur 19a

zeigt einen Teilabschnitt eines Garantiebandes, mit einem streckbaren Bereich, hier im nicht gestreckten, nicht montierten Zustand und

Figur 19b

im gestreckten, montierten Zustand.

Various exemplary embodiments of the subject matter of the invention are shown in simplified form in the drawing. It shows:

Figure 1

a vertical axial section through a hinge lock with a closed, circumferential tamper-evident element and

Figure 2

the same closure in the side view and

Figure 3

under supervision while

Figure 4

shows a detail of this plastic closure on a larger scale in section.

Figure 5

shows a second variant of a plastic closure with tamper-evident element in turn as an axial vertical section and

Figure 6

in side view while

Figure 7

represents the integrity guarantee element with holding part on its own.

Figure 8

shows the same plastic closure after removal of the tamper-evident element.

Figure 9

shows an enlarged detail of the tamper-evident element and the holding part, while

Figure 10

a detail of the same closure on a larger scale.

Figure 11

shows schematically another example of a plastic closure with tamper-evident element, this being designed in the form of a clasp, here before assembly and

Figure 12

when assembled from above and

Figure 13

in the side view.

Figure 14

shows another example of a plastic closure in the open state with a separate, clasp-shaped integrity guarantee element, which can be arranged inside the closure.

Figure 15a

shows the same closure in the assembled, intact condition as a partial section on a larger scale, while

Figure 15b-d

shows other cross-sectional variants of the integrity guarantee elements according to the same principle as shown in FIG. 15a.

Figure 16

shows a side view of a plastic closure, in which a completely circumferential, ring-shaped tamper-evident element is present.

Figure 17

shows a possible design of the target separation points for the desired destruction of the integrity guarantee element, while

Figure 18

represents a variant of it.

Figure 19a

shows a section of a guarantee tape, with a stretchable area, here in the unstretched, not assembled state and

Figure 19b

in the stretched, assembled state.

Although a number of design variations are already shown here are by no means conclusive. The completely new one Design of an integrity guarantee element as separately manufactured band or clasp-shaped element allows so many design options and Combinations of the different elements shown here, that it's only possible some of the most basic types to represent here.

Regarding the closure shown here, none can Conclusion to be derived from the invention. Is essential only that this is a closure with a Acting pivot axis, and the integrity guarantee element this pivoting movement is impossible as long as that Integrity guarantee element not destroyed or removed has been. The closure itself can be part of a Be container, the lower part of the container part itself corresponds or, as usual, can be screwed on or pop-up connector with a container represent. Usually these are closures that are on Containers, in particular containers made of plastic be put on.

The individual exemplary embodiments are described below in terms of their design and functionality described. From the description of how it works the construction specialist in an obvious way, how he the Design depending on the shape of the closure or the Form of application can vary while maintaining same main function.

A first embodiment variant is shown in FIGS. 1-4 shown. This is an absolute conventional plastic closure with a hinge. If it is a snap hinge or not, plays no role in the embodiment. The closure, which is designated as a whole by 1, comprises, as usual Lower part 2 and a cover integrally connected to it 3, which is connected to the lower part 2 via a pivot hinge 4 connected is. The lower part 2 has a cylindrical Shell surface and has means for on the inner surface Detachable or partially detachable connection with a container. In the example shown here, an internal thread 6 is provided. The lower part 2 is closed by a cover surface 8. The cover surface 8 is through a pouring opening 5, for example in the form of a spout. The Spout 5 is through an annular pin on the Closed inside surface of the lid 3. This pouring gasket 7 can be attached to the inside as well as outside Seal the pouring spout.

As a separately manufactured part there is a Integrity guarantee element 10 shown which the shape of a closed ring or tire. The Integrity guarantee element 10 can consequently both be made of a different plastic than the closure 1 itself and it can, of course, give an increased signaling effect produce a different color than the color from which the closure 1 is made itself. To do this visually symbolize, the tamper-evident element 10 was in Cross section shown in black. More detailed the constructive design of the integrity guarantee element 10 in Figure 4 recognize. It consists of an actual band 11, which is an upper, perpendicular from Band protruding contact surface 12 and a circumferential, has lower flexible retaining edge 13. The flexible Retaining edge 13 can in principle be made such that this at the same angle which he now follows to the belt surface 11 protrudes above, is formed protruding downwards. Between volume 11 and the flexible retaining edge 13 is then a thin point present, the upturning of the retaining edge 13 allowed. Such an integrity guarantee element leaves from above over the closure, whereby during the Slip the flexible retaining edge 13 upwards is redirected. Mandatory for such a configuration of the Integrity guarantee element 10 is the presence of outwardly protruding parts on lid and lower part. This can, as shown here, completely or partially circumferential decorative beads, as can be seen in particular from the Figure 4 emerges. The tape 11 is both in this case positively embracing the two decorative beads as well the flexible retaining edge 13 as a non-positive on Closure kept. Regarding the destruction of the Integrity guarantee element 10 by means of the tab 14 will look at the different ways they work in the Figures 16-19 to be described below are shown are referred.

The second embodiment, as shown in Figures 5-10 is again an embodiment that allows many variations. The actual closure 1 corresponds completely to that in the external design Closure according to Figures 1-4. The plastic closure, which in turn is made in one piece, also has the Lower part 2 and one connected to it via a hinge 4 Cover 3. Again, the top surface 8 is through penetrates a spout-shaped spout 5. to Attachment of the lower part 2 to a container is also here the lower part 2 with an internal thread 6 for attachment Mistake. In contrast to the example previously described here the top surface 8 with a peripheral peripheral Depression 15 and has at least one, however, advantageously three or more passages 16. This Passages 16 pass through the top surface 8. The real thing Integrity guarantee element 10 is essentially one clasp-shaped, practically any wrap angle around the clasp 1 forming clasp. Only the area of the hinge 4 must be left free clasp-shaped band 11 of the tamper-evident element 10 is via predetermined breaking points 17 with a holding element 18th connected. The diameter of the annular holding part 18 corresponds exactly to the outer diameter of the cylindrical Closure 1. The predetermined breaking points 17 are in niches 19 the holding part 18 is integrally formed. The real thing, here clasp-shaped band 11 can in a variety of ways enter into a positive connection with the cap. In here shown example takes hold of the execution 5 and 10 a peripherally directed outwards Cam 30 on cover 3, band 11. In the variant according to FIG 6 overlaps the band 11 a pusher 31 and thus prevents the opening without removing the tamper-evident element. In this case the band is in the range of Pushers designed accordingly narrower. It is possible but also, the tape with hooks towards the lid provided in corresponding niches in the cover wall intervention. Of course, here too again many other design forms, for example for Achievement of a positive connection between the integrity guarantee element and lid, possible. The connection of the Holding part 18 on the lower part 2 of the closure can very different types. For example, is the Spout 5 relatively large, so the ring-shaped Holding part 18 is also positive and / or non-positive hold this spout 5.

This embodiment is not particularly advantageous only that in turn the integrity guarantee element in color can be designed completely independently of the closure, but in addition that the holding part 18 even after the Removal of the band 11 as a clearly recognizable color ring remains. This color ring can only be used Serve decoration, but it can also be used as a color code to be needed. A typical example would be here Hair shampoo, where can be indicated by the color code whether this is an anti-dandruff shampoo, a shampoo for oily hair or a shampoo for normal hair. But it would also be applicable for closures on tubes, at for example the color code information about the Fat content of a mayonnaise.

In the two previously shown in detail and Solutions described was the guarantee element of integrity 10 once as a closed annular band and on the other hand shown as an open band-like band. In the case of the clasp-shaped variant, the band was through Holding part held in the desired end position. In the the following two, more schematically illustrated examples is the integrity guarantee element 10 as a resilient Clasp 110 and 114 realized. in this connection the clasp can be closed in a first spread position be kept as this is the execution after 11-13 shows or the clasp can be closed in the first Condition in a compressed position be held, as is the variant according to FIGS. 14 and 15 shows. These two basic types can of course be used again in various creative ways Manufacture shapes, in particular the width of the clasp-shaped Band can vary depending on the height of the closure. Furthermore, the wrap angle of the clasp vary and finally the means for positive connection of the clasp 110, 114 with the upper part or cover can be designed differently.

In the embodiment according to Figures 11-13 is how already mentioned, an integrity guarantee element in the Shaped a clasp shown in the first closed Condition resiliently held in a spread position is. A closure 1 in can be seen in FIG. 11 above supervision in the closed state. The separate Integrity guarantee element 10 is not included in it shown assembled state. The unloaded clasp-shaped Integrity guarantee element 110 has in unloaded state has a diameter that is smaller than the diameter of the closure 1. To assemble the clasp-shaped band can this from the front on the Clasp can be pressed open, the clasp-shaped band 110 must be spread at the same time. The clasp-shaped Band 110, for example, faces inward Form-fitting parts 111, which have predetermined breaking points 112 the band-shaped band 110 are connected. The closure 1 needs appropriately arranged intervention options 113, in which the form-fitting parts 111 in the first closed Intervene state or state of integrity. This form fit is designed so that the Do not let form locking parts 111 disengage. Before the The predetermined breaking points 112 must therefore only be opened for the first time be severed. Because the band-shaped band 110 den Clasp 1 can encompass less than half the circumference it doesn’t just snap onto the clasp become. Precisely the pre-tension under which the tape on Closure is held over the predetermined breaking points make sure after cutting the Predetermined breaking points irreversible the guarantee element of integrity is separated from the closure. Like the side view of the Figure 13 shows the tamper-evident element is over extending the parting plane of the closure clearly recognizable as a guarantee element of integrity. Because it in turn is manufactured completely separately from the closure here, too, the integrity guarantee element is completely easily injected in another plastic and in a different color.

In contrast to the variant according to Figures 11-13, in which the Protection element on the outside of the closure is put on, in the variant according to FIGS. 14 and 15a-d the clasp-shaped guarantee band 114 inside the Closure arranged. One can see in FIG. 14 above a hinge lock 1 in the open state and including the separately manufactured, non-assembled tamper-evident element as a band-shaped band 114. This Band has a radius of curvature that is larger than that Radius of curvature of the jacket walls of the closure 1. Zur Assembly, the clip 114 must therefore be compressed and remains in the compressed state in the first closed state Location held. This can also be taken for granted realize in various forms. In the illustrated Example is the band 114 with one protruding outwards Holding collar 115 provided. The holding collar 115 is over a Breakage point 116 connected to band 114. The The predetermined breaking point 116 is here, for example, as a predetermined breaking seam realized. The holding collar 115 is dimensioned so that it via a protruding from the top surface 8 of the closure Shell wall of the lower part 2 held in a form-fitting manner is. Both on the inner wall of the lower part and on the Inner surface of the cover 3 are positive locking means 117 in the The shape of nose-shaped projections or recesses is provided, which with correspondingly opposite parts 118 am Match volume 114 together. Such an integrity guarantee element can be easily opened on the Mantle wall of the lower part 2 or the lid 3, depending on Design, put on, after which the closure 1 is closed can and the positive locking means 117, 118 engaged come. Is then by pulling the tab 14 after torn outside collar 115, so is the tape 114 no longer held and relaxes within the Lock and jumps from the position 114 'in the position 114 ", as indicated in FIG. 14. In the unloaded The form-locking means 117, 118 are then no longer in a state engaged with each other and the lock can be opened.

A reclosing of the closure so that the Guarantee position could not be adjusted, is not possible since the retaining collar 115, which clearly shows the integrity visible, can no longer be brought into the curvature state which is the curvature of the cladding wall equivalent. Such a guarantee element is therefore against Deception secured.

Again, the invention leaves plenty of scope for different designs of both the integrity guarantee element as well as the form of it customized closure. While the in Figures 14 and 15a shown a tamper-evident element with a cross-sectional shape of an inverted, standing "h" shows an embodiment is shown in FIG. 15b, at which is the cross-sectional shape of the tamper-evident element an upside down "h" shows. This solution should be particularly preferred since it is known that the Closing closures where the tamper-evident element is arranged on the lid 3, especially little leads to deformations that lead to rejects.

A solution can be used in much the same way be in which the integrity guarantee element an in Cross-section has an approximately Z-shaped shape, as shown in the figure 15c shows. With this variant, the required Shape the form-fit agent 118 particularly well. something similar also applies to the variant according to FIG. 15d.

Another variable in the design of the Integrity guarantee element according to the statements in accordance with 15a-d lies in the local arrangement of the Destruction point 116, which is here only by an arrow is indicated. The separation point, which in turn is represented by a Variety of bridges can be formed or by one tearable target dividing line, as in the variant after Figure 15b, outside the closure or, as in the other variants to lie within the closure come. The arrangement of the separation points shown here is the preferred location for this, but there are also others Questioning.

Finally, it should be pointed out that the Connection options for the respective integrity guarantee element with the lower part or with the Lids were not shown. Virtually all known Solution principles, including those not shown here are possible. But one is always preferred Consider solutions that are neither a stick nor a Require welding.

In the figures to be described below are 16-19 Details of integrity guarantee elements are shown.

These detailed solutions can in principle be used various embodiments of the integrity guarantee element realize. The examples shown here are however, in particular for implementation in combination with shown closed, annular bands and applicable.

Figure 16 shows a closure with tamper-evident element 10 approximately according to an embodiment as shown in Figures 1-3. Band 11 is tight fits over the closure and has a window 160, through which, for example, pusher parts on the lower part and reach through lid 2,3. Starting from this window 160 runs circumferentially in the longitudinal direction Partition strip 161, the. On both sides by predetermined separation points or Target seams is limited. This is after in vertical section of Figure 17 clearly recognizable. At least one-sided A tab 14 is formed on this separating strip 161. By The separating strip 161 can be pulled on this tab 14 tear out and the tape 11 irreversibly breaks into two Subbands. Such a band 11 can be relatively strong be subjected to tensile stress without this causing the predetermined breaking points 162 will be affected. Accordingly, it can Volume 11 not only one in the guarantee of integrity positive but also a non-positive component perceive.

Instead of separating the tamper-evident element 10 by Predetermined separation points in the longitudinal direction of the belt, you can also use these separation points or separation lines perpendicular or inclined to the longitudinal direction of the Volume 11 run. This possibility is pure shown for example in FIG. Here run the Desired separation points 17 inclined to the longitudinal direction of the Volume 11.

With closed, ring-shaped tamper-evident elements there is a problem with different plastics, that the tensile elasticity is relatively low. This is true especially towards most polypropylenes that are inherently in the locking technology are very common. To closed Integrity guarantee elements, such as designed in a ring shape To be able to manufacture tapes 11, in particular must also be able to hold onto a closure with a positive fit the band 11 has at least one stretchable area. Such stretchable or stretchable areas can be passed through meandering sections or by stretching with a Make a variety of breakthroughs, making these breakthroughs can spread under tension. In Figure 19a is a such a band section, which is designated overall by 190, shown. Are within this stretchable band area a plurality of expandable openings 191 are available. These expandable openings 191 open under tension, such as can be seen in FIG. 19b. The stretchable or stretchable Band area 190 is delimited by predetermined breaking lines 17. A Tab 14 is via bendable, bow-shaped webs 192 to the fixed lateral ends of the stretchable band section. By pulling on the tab 14, the predetermined breaking points can be 17 perpendicular to the direction of the band 11 without problems separate. Because small webs in the area of the predetermined breaking points the direction of the tape run are present with very small Cross section, the molecular chains in this area directed and accordingly these webs keep relatively high Tensile forces in the direction of the webs respectively of the molecular chains. By pulling on the tab 14, however exerted a force perpendicular to this direction, whereby a notch effect takes place on the molecular chains and accordingly the predetermined breaking points can be easily separate.

The variant of an integrity guarantee element with stretch or stretchable area, as in Figures 19a and 19b shown, can also be combined with clasp-shaped Elements under tension on the lower part and cap are held.

Despite the need for increased packaging security, through plastic closures with tamper-evident elements that is guaranteed, there is always that Customer need, its packaging as possible to have individualized. Just the present invention allows the relatively expensive closure to a large extent standardize and only by the specially made Individuality guarantee element of individuality. None of the products previously known on the market allows one such degree of customization. With that, the better pay for expensive tools for the closures, while the molds for the tamper-evident elements can be extremely simple in many cases and consequently also for relatively smaller quantities an individual element of guarantee of integrity can be produced. Although can be this way the closures no longer in one operation bring in the first locked position, but need for this purpose a separate assembly machine; but because on the other hand, the injection molds are considerably cheaper, they have no complicated locking mechanisms and because the otherwise existing thin spots for the Breakage points on the closure itself can be eliminated Cycle time per spraying process can be significantly reduced. The Assembly machines themselves normally allow one of these high productivity that a single assembly machine is enough to the production of several injection molding machines to process.

The integrity guarantee elements according to the invention can also be made particularly large. Get through it they have an increased signal effect. This signal effect leaves stand out extremely in that the integrity guarantee element easily in another color or can be made of a different material than that Closure. Without the expensive purchase of a two-component spraying machine can be a two-tone plastic closure achieve the highest aesthetic requirements can suffice.

Claims (24)

1. A plastic closure (1) consisting of a lower part (2) and a top (3) connected thereto via a hinge axis (4), as well as of an integrity guarantee element (10) which in the condition of being closed for the first time irreversibly secures with a non-positive and/or positive fit the lower part (2) and the top (3) against pivoting movements about the hinge axis (4), characterised in that the integrity guarantee element comprises at least one open or closed, annular or clasp-shaped strip (11) which is an element manufactured separately from the lower part and top, wherein in the assembled condition the guarantee strip with holding means is held on the lower part and top with a positive and/or non-positive fit.
2. A plastic closure according to claim 1, characterised in that the integrity guarantee element (10) comprises a closed annular strip (11) extending over the whole circumference of the closure (1).
3. A plastic closure according to claim 1, characterised in that the integrity guarantee element (10) comprises a strip (11, 110) encompassing a part circumference of the closure.
4. A plastic closure according to claim 1, characterised in that the integrity guarantee element (10) is a strip (10, 11, 12, 13) engaging on the top and lower part in a clip-like manner.
5. A plastic closure according to claim 2, characterised in that the closed annular strip (10) comprises at least one irreversibly stretchable region (190).
6. A plastic closure according to claim 3, characterised in that the strip is configured as a spring-elastic clasp (110).
7. A plastic closure according to claim 6, characterised in that the clasp (110) in the condition of being closed for the first time is held in a spread condition. (Fig. 12)
8. A plastic closure according to claim 6, characterised in that the clasp in the condition of being closed for the first time is held in a pressed-together condition (114').
9. A plastic closure according to claim 1, characterised in that the integrity guarantee element (10, 114) is manufactured as one piece with a holding part (18, 115) which is fastenable on the lower part (3) or the top (3) before the closure for the first time.
10. A plastic closure according to claim 9, characterised in that the integrity guarantee element (10) is connected to the holding part (18) via at least one separating location (17, 116).
11. A plastic closure according to claim 9, characterised in that the holding part is a holding collar (115) which extends outwards between the lower part (2) and the top (3).
12. A plastic closure according to claim 11, characterised in that the integrity guarantee element has the cross sectional shape of a laterally inverted "h" which is held with a positive and/or non-positive fit on the wall surface of the lower part (2). (Fig. 15a)
13. A plastic closure according to claim 11, characterised in that the integrity guarantee element has the cross sectional shape of an "h" standing on its head and encompasses the wall surface of the closure top with a positive and/or non-positive fit (Fig. 15b).
14. A plastic closure according to claim 11, characterised in that the integrity guarantee element has the cross sectional shape of a "z" rotated by 90°. (Fig. 15c)
15. A plastic closure according to claim 11, characterised in that the integrity guarantee element has the cross sectional shape of an "L". (Fig. 15d)
16. A plastic closure according to claim 9, characterised in that the holding part (18) is a plate, preferably annular plate, irreversibly fastenable on the lower part (2) of the closure.
17. A plastic closure according to claim 16, characterised in that the annular plate (18) in the closed condition of the closure forms the rest surface for the top (3).
18. A plastic closure according to claim 1, characterised in that the lower part (2) and the lid (3) comprise formed parts projecting peripherally outwards which are encompassed with a positive fit by a strip or a clasp.
19. A plastic closure according to claim 9, characterised in that the top comprises a press-piece (31) projecting beyond the circumference of the top and which engages through a recess (30) on the integrity guarantee element which via the holding part is in engagement with the lower part.
20. A plastic closure according to claim 1, characterised in that the integrity guarantee element comprises a tear-tab (14).
21. A plastic closure according to claim 1, characterised in that the integrity guarantee element (10) comprises a colouring which is different from the remaining part of the closure (1).
22. A plastic closure according to one of the claims 9 and 21, characterised in that the holding part (18) as well as the integrity guarantee element (10) has a colour differing from the remaining closure parts (2, 3), and that after the removal of the integrity guarantee element in the re-closed condition the holding part (18) remains partly visible and thus permits a coloured identification. (Fig. 8)
23. A plastic closure according to claim 1, characterised in that the integrity guarantee element in its direction of longitudinal extension is separable via separating locations or separating lines. (Figs 16, 17)
24. A plastic closure according to claim 1, characterised in that the integrity guarantee element is separable perpendicular or inclined to its direction of longitudinal extension via separating lines or locations (17). (Figs. 18, 19a and b)

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