DE1916954A1 - Repeatedly usable tight seal, especially tamper-evident seal for bottles or similar containers - Google Patents

Description

-I April [ 1816954

Our file 24 771

Alrik Civer Lindström, Björnlundavägen 12,

Älvsjö / Sweden

Repeatedly usable tight seal, especially tamper-evident seal for

Bottles or similar containers

The invention relates to one for bottles or Similar containers suitable, repeatedly usable sealed closure, which consists of a container opening encompassing Inner cap and an outer element to be brought into engagement therewith with an inner, on the outer side of the There is an inner-cap-acting locking mechanism that pulls off of the outer element prevented by the inner cap, but a sliding of the outer element onto the inner cap permitted.

In the case of known closures of this type, the iur The outer element used for security and reinforcement consists of a ring that is inclined inwards and upwards for locking has a sharp edge or a row of cream. Such a Ring can therefore only be used when a container is closed for the first time, but not after it has been opened because it then no longer guarantees a tight pressure lock.

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The object on which the invention is based therefore exists is to create a repeatedly usable sealed closure of the type mentioned, in which the outer element can still be used after opening the container. According to the invention, this object is achieved proposed that the outer element consists of a closure cap which has an internal thread forming the lock with an asymmetrical profile or a helical shape with a correspondingly designed cross-section, Has protruding peripheral edge. At least when a container is closed for the first time, the outer cap pressed onto the inner cap, so as to the inner cap to press tightly over the container opening. When the container is to be opened, the outer cap can be simple unscrewed and then the inner cap removed. It is especially useful for bottles with aerated or Carbonated drinks are particularly advantageous to always have an absolutely tight seal on the bottle.

In a preferred embodiment of the closure according to the invention, the inner cap can at its open Edge edge be provided with a tongue extending from its bottom. By depressing the tongue, for example old the thumb of one hand, against the bottle neck * or the like. when unscrewing the outer cap, the Inner cap are prevented from turning. The same can be achieved if the inner cap with an inner, into a groove located in the opening edge of the container protruding protrusion is provided * provided that the Groove extends radially, this also facilitates the pouring of the bottle content facilitated.

In order to avoid premature, accidental or unauthorized

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To prevent the outer cap from being removed, the inner cap or its tongue can face outwards with one of its outer strings directed and located in one in the edge of the outer cap Slit protruding predetermined breaking pin be provided. In this way a must when unscrewing the outer cap torque must be applied to break the pin.

The outer cap is preferably made of hard material, such as metal, hard plastic or the like. While the inner cap made of soft material, such as rubber, soft plastic or similar materials consists.

Several embodiments of the invention are shown in the drawing and are described in more detail below. Show it:

1 shows a closure according to the invention, partly in section and partly in view.

1a shows a view offset by 90 ° to the representation shown in FIG. 1,

Fi ^. 2 shows a representation corresponding to FIG. 1 of a modified closure,

2a shows the view offset by 90 °, FIG. 3 shows a further embodiment of the closure, FIG. 3a shows the side view offset by 90 °, 4 and 5 partial sections through the inner and outer cap 909845/0049

on a larger scale,

6 and 7 further exemplary embodiments of the closure,

8 shows a tube closure according to the invention in partial section and partial view,

9 shows a section through a tube seal ₃ but without a tube,

10 shows a further modification of a tube closure and

11 shows a modified embodiment of the inner cap with a predetermined breaking pin.

In Fig. 1, a bottle neck 2 is shown with a bottle rim 4 lying on the bottle opening. One for that Repeatedly usable sealed closure designed for a bottle opening is denoted by 6. This closure 6 has an outer cap 8 and one as. Clamping cap formed inner cap 10 which engages around the bottle rim 4. the Outer cap 8 has an internal thread or a helical peripheral edge 12 with an asymmetrical profile. This Profile is designed so that the outer cap 8 can be placed directly on the inner cap 10, namely in the Position shown in Fig. 1. In contrast to this, however, the profile does not allow the outer cap 8 to be removed from the bottle mouth can be withdrawn, but rather has to be due to the special construction of the thread profile to remove the Closure, the outer cap 8 can be unscrewed. Examples of suitable thread profiles are shown in FIGS. 4 and 5

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shown. One preferably integral with the inner cap 10 The tongue 14 produced extends from the lower open edge of the inner cap 10 downwards along the bottle neck 2. Unscrewing the outer cap 8 is facilitated by the tongue 14, since the inner cap 10 on a Sliding on the edge of the bottle 4 is prevented. This is achieved in that the tongue 14 by means of the thumb of one hand is pressed against the bottle neck and the outer cap 8 is unscrewed with the other hand. This arrangement the tongue 14 is shown in the front view according to FIG. 1a.

In the figures described below, they are identical or similar to the embodiment according to FIGS. 1 and 1a acting parts have the same reference numerals.

In the embodiment shown in FIG. 2, the tongue is slightly modified compared to the embodiment according to FIG. 1, namely designed so that they cooperate with a shoulder 16 attached to the bottle neck 2 and thus can also prevent twisting of the inner cap 10 when the outer cap 8 is unscrewed. Sitting on tongue 14 an outwardly protruding predetermined breaking pin 18 which enters a slot 20 when the outer cap 8 over the inner cap 10 is pressed. The slot 20 extends from the open edge of the outer cap 8. When opening the shutter the predetermined breaking pin 18 is sheared off as soon as the tongue 14 on the shoulder 16 of the bottle neck 2 to Plant is coming. In this way, unauthorized opening of the container can easily be determined.

In the embodiment of the inner cap 10 shown in FIG. 3, a tongue corresponding to the tongue 14 is not present.

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the. Rather, the tongue is replaced by a preferably flat projection 22 that extends from the interior of the inner cap 10 protrudes outwards. This projection 22 is when the inner cap 10 is placed on the bottle in a radial Groove inserted in the bottle mouthpiece. This arrangement thus has the same effect as the tongue 14 and the shoulder 16, i.e. when the outer cap 8 is unscrewed, a Twisting of the inner cap 10 is prevented. The same protection against rotation of the inner cap 10 can also be achieved thereby achieve that the lying within the inner cap 10 part of the container with small, tapered Projections 28 is provided (Figs. 6 and 7), which in the Penetrate the material of the inner cap 10. Using a groove in the bottle mouth also has the advantage of that the pouring out of the bottle contents is facilitated. The inner cap 10 has an outwardly facing annular flange 23, which is optionally fully or partially provided with axial grooves 23a in order to be able to use the Outer cap 8 to facilitate the compression of the annular flange 23. In the embodiment according to FIG. 3, the outer cap is 8 slightly different than in the figures described above. The thread 12 of the outer cap 8 extends namely only partially into the cap, i.e. a flat part connects to the thread, which extends to the bottom of the outer cap 8. At the bottom of the outer cap 8 there is an annular projection 24, which has the in 3 and its outside together with the flat part of the outer cap 8 cooperates in such a way that the bottle mouthpiece is sealed so that the inner cap 10 after opening the Closure can be removed. In the embodiment according to FIG. 3, the outer cap 8 consists of a flexible material .

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A modification of the embodiment according to FIG. 3 is shown in FIG. When containing liquids, especially suckers Liquids poured out of bottles, it happens again and again that drops run down the neck of the bottle. The simplest measure to avoid this disadvantage is to use a spout like him is known in a wide variety of constructions.

However, the known constructions lead to the invention Sealing a bottle or container creates difficulty. However, these difficulties can be solved simply eliminate if the outer cap 8 is made sufficiently high and the inner cap 10 with a funnel-shaped Spout 26 is provided, the opening of which is kept closed by the fact that it extends from the bottom of the outer cap 8, an annular flange 24 extending into the container opening also extends into the container opening Ring 26a of the pouring funnel 26 presses tightly against the inside of the container opening. The pouring funnel 26 ends in a pointed edge at its upper end. In this embodiment, the inner cap 10 can continuously stay in the container. Both the inner cap 10 and the outer cap 8 can be made of relatively hard or be made of semi-hard material, for which, for example, polypropylene or high-density plastic (HD-ethylene) suitable. This results in an advantage in that these materials can be sterilized. This is common -. for soft materials that also have a have good chemical resistance, not possible. the end Fig. 6 shows that there is enough space to be desired if necessary, to provide the inner cap 10 with a special pouring spout of known construction, i.e. a pouring spout, which makes it easier to count drops. Included

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In this embodiment, the inner cap 10 does not need to be removed, it can cover a large part of the edge 4 reach around the bottle opening whereby the seal is improved. To achieve a tight seal, is the outer cap 8 is provided with a plurality of slots 20 and the inner cap 10 is provided with a number of predetermined breaking pins 18. In this way, the outer cap 8 does not need to be in a certain position with respect to the inner cap when it is closed 10 to be brought. When closing the container namely not all pins 18 are sheared or broken off, no matter how the outer cap 8 is placed on the inner cap 10 * It is completely sufficient if only one of the pins remains intact to show that the latch has not been opened in an unauthorized manner. Furthermore, in the embodiment according to FIG. 6, only the outermost edge of the annular flange 23 with the thread is required 12 of the outer cap 8 cooperate, while the remaining part of the inner cap 10 can remain threadless.

The closure shown in Fig. 7 is suitable for tablet tubes or cans. The main difference between this closure and the ones already described Closures consists in that the inner cap 10 has a recess 30 which is used to accommodate daily needs who serves tablets or pills. In this case, the outer cap 8 is used to seal the between it and the inner cap 10 and the contents of the can or tube Space. Instead of a single recess 30, several such recesses can also be provided. The recess can also be identified by letters or numbers, for example hours, days, weeks or to display longer periods of time.

In a general embodiment of the closure according to the invention

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The outer cap is preferably made of metal, hard Plastic, such as polypropylene or other materials. The inner cap 10, however, is preferably made made of soft plastic such as polyethylene, rubber or the like.

The closure according to the invention can be used in a wide variety of containers shown in the drawings, which can be made of different materials, such as glass, plastic, metal, etc.

In the exemplary embodiments according to FIGS. 1 and 2, the bottom of the outer cap 8 does not need to be on the top of the inner cap 10 to be applied. The inner cap 10 can also be provided with a thread to match the thread of the outer cap to be able to work together, although the inner cap is preferably made of a softer material, into which the material of the outer cap can penetrate.

The closures shown in Figs. 1 and 2 are primarily for closing carbonated beverages thought, but they can just as well be used with pill tubes or cans, etc. The shutter after Fig. 2 is primarily intended for liquid medicaments. The advantages of the closure according to the invention exist all in the fact that it enables a repeated tight seal and withstands high internal or negative pressures.

The closure according to the invention can advantageously also in the case of tubular containers, such as tubes for Adhesives, toothpaste or the like. to be used. In this case, one tapers outward from the mouthpiece of the tube Inner cap with an opening at the outer end

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used, in those from the bottom of the likewise tapering Outer cap tightly engages an axially protruding pin. In this way, the inner cap replaces the removal or output part of the tube, which is of great advantage since the material for the manufacture of the output part can be selected regardless of the material of the tube. The material of the removal part is then preferably softer held as the tube material and also as the material of the outer cap. In this way there is an essential tighter closure than was previously possible with tubes, since the inner cap is soft and flexible Forms seal between the outer cap and the tube. When the outer cap is screwed onto the container, For example, the outer end of the inner cap can be compressed between the pin and the inner wall of the outer cap. The inner cap and / or the outer cap can be tapered .

As already mentioned above, to prevent premature, accidental or unauthorized unscrewing a predetermined breaking pin can be arranged on the inner cap of the outer cap and extends from the outside to the outside and engages in a slot in the edge of the outer cap. In this way a certain torque is required to break off the pen. In a preferred embodiment of the invention, the breaking pin only needs to be attached to the inner cap via a narrow bridge. The bridging preferably connects the essentially the middle part of the predetermined breaking pin, for example with an outwardly protruding edge of the Inner cap.

In Fig. 8 the mouth part is a tube or the like

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Container 2 shown with a rim 4 which extends around the mouth part. The repeatedly usable lock for the mouth part is denoted by '6. The closure 6 has a tapered outer cap 8 and a inner, also tapered clamping cap 10, which the Edge 4 grips. The outer cap 8 has an internal thread or a helically encircling edge 12 asymmetrical profile. This profile is designed in such a way that the outer cap 8 is pressed directly onto the inner cap 10 can be grounded, specifically in the position shown in FIG. In contrast, the profile prevents it from being pulled off the outer cap 8, rather this must be unscrewed due to the special design of the profile when the Shutter should be opened. In the annular flange marked 23, which extends outward from the inner cap 10, there are axial grooves 23a which prevent the flange 23 from being compressed when the outer cap 8 is put on facilitate. The internal thread 12 engages in the material of the flange 23 in order to achieve the locking effect described above to effect. The axial grooves 23a of the flange 23 can be clearly seen in FIG. 9, both the flange and its grooves 23a are only shown by way of example, so that the inner cap 10 may not have any grooves needs to have. At the free end of the inner cap 10 is an opening with a pin 40, which extends from the bottom of the outer cap 8, forms a tight seal. The Y / andung of the inner cap 10 is when put on the outer cap 8 pressed together by the pin 40 and the inside of the outer cap 8, so that a good closure results.

FIG. 9 shows a slightly modified version compared to FIG Execution. When screwing on or pressing on the outer

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cap 8 on the inner cap 10 presses the lower part of the. Wall of the outer cap 8, the flange 23 inwards, which is made possible by ,,, the grooves 23a, so that an inner .. edge 23b results. This edge runs around the corresponding outer edge of the mouth part of the tube or of the container j, the mouth part having an outer contour which _: essentially the contour of the inner wall of the inner cap 10 in the region of the flange 23, the essentially cylindrical part 42 and the conical part 44 corresponds. This results in a particularly good seal between the mouth part of the tube and the inner cap 10 »

In the slightly modified embodiment according to FIG. 10, the outer cap 8 extends conically upwards, while ^ the inner cap 10 extends upward in steps and has an opening 46 that connects to the pin 40 of the outer cap 8 forms a tight seal. .This closure 6 is suitable for a container 2 containing adhesive. On the inner cap 10, in the vicinity of the opening 46, are ringed Means such as a knife 48 for removing superfluous adhesive and one forming an annular groove Annular flange 50 arranged for collecting overflowing adhesive.

The illustrated in Fig. 11, substantially the same and the same function having inner cap 10 has in contrast su small predetermined breaking pins 18 of FIG. 6 a greater breaking pin 18a only via a thin bridging J ¹ ,? is attached to the edge of the flange 23 of the inner cap 10. The predetermined breaking pin 18a has the same function as one of the predetermined breaking pins 18 of the embodiments described above. However, the present arrangement requires a larger breaking torque of the pin 18a,

BATH ORIGINAL

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when the outer cap, not shown, is unscrewed from the inner cap 10 for the first time. This also prevents that the pin 18a, instead of being sheared through the slot 20, is below the wall of the outer cap slides along. The predetermined breaking pin 18a can also be used in the embodiments according to FIGS. 8 to 10.

The bottle edge 4 in the embodiment according to FIG. 8 can with Be provided with teeth that can penetrate the soft plastic material of the inner ring 10. Is the inner cap on the other hand, made of harder plastic, for example polypropylene, the ring can have corresponding recesses be provided for receiving the teeth of the bottle rim 4.

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Claims (17)

Alrik Civer Lindström, Björnlundavägen 12, Alvsjö / Sweden Repeatedly usable tight seal, especially tamper-evident seal for Bottles or similar containers Claims Repeatedly usable tight closure, in particular tamper-evident closure for bottles or similar containers, consisting of an inner cap encompassing the bottle or container opening and an in Engaging outer element with an inner lock acting on the outside of the inner cap, which prevents the outer element from being pulled off the inner cap, but prevents the outer element from being pushed open the inner cap allows, characterized in that the outer element consists of a closure cap (8) consists of an internal thread (12) with an asymmetrical profile or forming the lock a helical, protruding peripheral edge provided with a correspondingly shaped cross-section having. 2. Closure according to claim 1, characterized that the inner cap (10) at its open marginal edge extending from its bottom Has tongue (14). 909845/0049 - 15 - 3. Closure according to claim 1, characterized _? that the inner cap (10) has an inner projection (22) protruding into a groove located in the opening edge (4) of the container. 4. Closure according to claim 1, 2 or 3, characterized in that the inner cap (10) or its tongue (14) one or more from the outside facing outwards and into one or more in the edge of the outer cap (8) located slots (20) protruding predetermined breaking pins (18). 5. Closure according to one or more of claims 1 up to 4y d a d u r c h g e denotes, that a dera bottom of the outer cap (8) facing part the inside of the outer cap (3) is smooth and that the bottom with the container opening odor a part of the inner cap (10) cooperating annular sealing flanges "(24) or the like. Has. In that the inner cap (10) is provided with a funnel-shaped spout (26) or a pouring spout (, closure according to claim 5, characterized GEK e η η ζ η calibration et. 7. Closure uach.-claim 6, characterized ge k.-e.-n-π L-.e --- i; c _; h: η- et that the spout (26) ^f: ii the Eehälteröffnung protruding and anliogcmden at the "Vh'vliorinnenseite ring portion (26a) and the outer cap (8) m has a from its bottom extends, and the ring portion (26a) of the spout (26) you " ¹ - gep-i- press the inside -dfrr the container opening- 9 0 9 8 4b / U 049.BAD ORIGINAL send, has annular sealing flange (24). 8. Closure according to one or more of claims 1 to 7, characterized in that that the inner cap (10) at its open marginal edge by an outwardly and downwardly extending, the unscrewing of the outer cap (8) facilitating the annular flange (23) is sealed, which is preferably with it axially extending grooves (23a) is provided. 9. A closure according to claim 8, characterized in that only the outermost edge of the flange (23) is designed to interact with the internal thread (12) of the outer cap (8). 10. Closure according to one or more of claims 1 to 8, characterized in that that the inner cap (10) has an outer thread which engages with the inner thread (12) of the outer cap (8) owns. 11. Closure according to one or more of claims 1 to 10, characterized in that the outer cap (8) made of hard material, such as Made of metal or hard plastic. 12. Closure according to one or more of claims 1 to 11, characterized in that the inner cap (10) is made of rubber, soft plastic or a similar soft, resilient material. 13. Closure according to claim 1 or 2 and 8, for use 909845/0049 - 17 - for example adhesives, toothpaste or the like. containing Tubes, characterized by one that tapers outwards from the mouthpiece of the tube (2) Inner cap (10) with an opening (46) located at its outer end, into which a from the bottom of the likewise tapered outer cap (8) engages axially projecting pin (40) tightly. 14. Closure according to claim 13, characterized that the outer end of the wall of the inner cap (10) when the outer cap is screwed on (8) is pressed between the pin (4o) and the inner wall of the outer cap (8). 15. Closure according to claim 13 or 14, characterized characterized in that the inner cap (10) and / or the outer cap (8) are conical. 16. A closure according to claim 4 or one of claims 13 to 15, characterized in that the predetermined breaking pin (18a) has a narrow bridge (52) is attached to the inner cap (10). 17. A closure according to claim 16, characterized _overall> indicates that the lock (52) substantially connects the middle part of the breaking pin (18a) having an outwardly projecting edge of the inner cap (10). 909845/0049 Blank page