WO2008000826A1

WO2008000826A1 - Twist-off cap

Info

Publication number: WO2008000826A1
Application number: PCT/EP2007/056591
Authority: WO
Inventors: Herbert Wohlgenannt
Original assignee: Capartis Ag
Priority date: 2006-06-29
Filing date: 2007-06-29
Publication date: 2008-01-03
Also published as: EP2038183B1; DE502007005860D1; EP1873077A1; PL2038183T3; PL2038183T5; EP2038183B2; EP2038183A1; ES2356945T5; ES2356945T3; ATE490191T1

Abstract

The twist-off cap (2) made of plastic for a container neck (3) having a container mouthpiece (3a) with a guide (3d) running around the outside is composed of a jacket (2a) with a cylindrical basic shape and an essentially circular disk-shaped top plate (2d), on the inside (2e) of which a one-piece sealing lip (2g) is formed around the perimeter in a ring-shaped manner, the twist-off cap (2) having at least one outlet opening (2k), which is arranged outside an interior area (2v) enclosed by the full-perimeter sealing lip (2g) and which extends in a circular arc-shaped manner in the circumferential direction of the top plate (2d), and a cap mouthpiece (2n) being formed on the outside of the twist-off cap (2), and the outlet opening (2k) which opens into the cap mouthpiece (2n), and the cylindrical jacket (2a) having a guide (2b) running around the inside, which guide is embodied to interact with the guide (3d) running around the outside such that the twist-off cap (2) can be attached to the container mouthpiece (3a) in a hinged manner about a rotational axis (D).

Description

_

ROTARY VERSCHLUSSKAPPE

The invention relates to a rotary closure cap made of plastic for a container having a container mouthpiece.

There are plastic closures for beverage containers known which allow drinking from the container without the

Before completely removing the plastic closure from the container. Plastic closures which allow drinking "through the plastic closure" are particularly pleasant and therefore also very popular Such a plastic closure is disclosed, for example, by document US 5 975 369. This plastic closure consists of several individual parts and forms one between the mouthpiece and the interior of the container Such plastic closures enjoy increasing popularity because they are easy to use, and also allow easy and comfortable drinking., However, such plastic closures have the disadvantage that the production of the cap is complex and therefore relatively expensive In addition, only limited suitable for pressurized drinks.

The document US 3,261,513 discloses a plastic closure which is provided for the delivery of creamy substances to allow a hygienic removal of the creamy substance from a container. This plastic closure is not _

suitable as a closure of a drinking container to allow drinking "through the plastic closure." Even with heavy suction on the plastic closure, the liquid contained in the drinking container could hardly be removed and this plastic closure is not suitable for a pressurized drink is therefore not suitable for a pleasant drink.

It is therefore an object of the present invention to form a rotary closure cap, which is economically advantageous to manufacture, which is also closed again, is easy to use, and allows a pleasant drink.

This object is achieved with a rotary closure cap having the features of claim 1.

The dependent claims 2 to 22 relate to further, advantageously designed rotary closure caps.

The object is achieved in particular with a rotary closure cap made of plastic for a container having a container mouthpiece with an outer circumferential guide, consisting of a cylindrical shell in the basic form and a substantially circular disc-shaped head plate, on the inside of an annular circumferential, one-piece sealing lip is formed, wherein the rotary closure cap has at least one outlet opening, which is arranged outside an inner area enclosed by the circumferential sealing lip and extends in the form of a circular arc in the circumferential direction of the top plate, and wherein a cap mouthpiece on the outside of _

Rotary closure cap is formed, and wherein the outlet opening opens into the cap mouthpiece, and wherein the cylindrical jacket has an inner circumferential guide, which is configured so cooperating with the outer circumferential guide, that the rotary closure cap is rotatable about an axis of rotation fastened to the container mouthpiece

The rotary closure cap according to the invention has the advantage that, depending on its rotational position between the container mouthpiece and the cap mouthpiece, a fluid-conducting channel is opened or closed, so that the rotary closure cap can be opened or closed by simply turning it without the rotary closure cap completely from the container remove is. The rotary closure cap according to the invention permits drinking via the cap mouthpiece "through the plastic closure." The outlet opening extends in a circular arc in the circumferential direction of the top plate, which has the advantage that the outlet opening is relatively long, so that a sufficient quantity of liquid through the outlet opening for pleasant drinking the

Container can escape. The outlet opening is also sufficient space for the intake of air available, which enters the container, so that the inventive rotary closure cap allows a comfortable and continuous drinking. In addition, the rotary closure cap is integrally formed, so that it is very inexpensive to produce. The rotary cap is suitable for so-called still drinks, as well as pressurized drinks, especially carbonated drinks. Since the rotary cap has on the inside an annular circumferential, one-piece sealing lip, which in _ _

closed state rests against the inside of the container neck, and thereby achieves an excellent sealing effect, the rotary cap is particularly suitable for pressurized drinks. Preferably, the rotary closure cap has a stop, so that the rotation angle is limited and the

Rotary cap can not be completely removed from the container. The cap mouthpiece is preferably not centrally symmetrical with respect to the rotary cap but laterally to allow a comfortable drinking.

In an advantageous embodiment, the container mouthpiece has an external thread and the rotary closure cap a correspondingly adapted internal thread, so that the rotary closure cap is also raised during rotation, thereby releasing a larger passage opening.

In a particularly advantageous embodiment, the rotary cap fits on a container with standardized container neck or standardized container neck. A standardized container neck is understood to mean a container neck with geometry usually prescribed by international standards. The vast majority of bottles used in the beverage industry today are provided with a standardized container neck on which a standardized rotary closure cap can be placed. The mouth geometry of standardized container necked mouthpieces is defined for example in standards of the PCO (Plastic Closure OnIy) or BPF (British Plastics Federation). The PCO mouth geometry is particularly suitable for containers with plastic screw caps. These Plastic screw caps are suitable for closing bottles with both still and pressurized carbonated drinks. Such a standardized container neck, configured as a so-called PCO-28 neck, is shown in FIG. In addition to the neck with a diameter of 28 mm shown in FIG. 3, other common standard diameters are used, for example diameters of 26, 37, 38 or 40 mm. The rotary closure cap according to the invention can be adapted to the neck according to FIG. 3 as PCT-28 closure with a diameter of 28 mm or, depending on the geometry of the neck, can be produced in other standard diameters.

The rotary closure cap according to the invention for standardized container necked mouthpieces has the advantage that the bottles produced in large quantities can be easily equipped with the attractive rotary closure cap according to the invention. With regard to technical properties such as handling, pressure resistance, etc., the rotary closure cap according to the invention is preferably completely compatible with those previously standardized

Container neck lances used standardized screw caps. In a particularly preferred embodiment, the cap mouthpiece of the rotary cap extends within the surface of the top plate perpendicular to the top plate or in the direction of rotation of the rotary cap, with the result that the cap mouthpiece does not protrude radially to the axis of rotation on the cylindrical shell of the rotary cap. This results in the advantage that the placement machines used for closing containers, which the cap on the Put on container, do not need to be modified. Existing automatic placement machines or filling lines can therefore be used without modification for closing containers with the rotary closure cap according to the invention.

Since the rotary closure cap according to the invention is designed in one piece, there are hardly any additional costs for its production, so that a novel rotary closure system can be offered with the rotary closure cap according to the invention, which is extremely easy to operate, which conveys a novel drinking experience and which is extremely cost-effective. Because the inventive rotary cap can be placed on a standardized container mouthpiece, the Umstellkosten for equipping the container with the inventive rotary closure cap are extremely low. The inventive

Rotary cap thus allows to create significant added value by creating an extremely attractive beverage packaging for consumers through negligible additional costs, with a standardized beverage container and the attractive rotating cap.

The invention will be explained in more detail with reference to several embodiments. The figures show:

Fig. 1 is a perspective view of a rotary closure cap;

Fig. 2 is a plan view of the rotary closure cap;

3 shows a longitudinal section through a known, standardized container mouthpiece. 4 shows a longitudinal section through a further rotary closure cap along the section line AA according to FIG. 2;

5 shows a longitudinal section through a rotary closure system in the closed state along the section line B-A according to FIG. 2;

6 shows a longitudinal section through the rotary closure system in the opened state along the section line B-A according to FIG. 2;

7 is a perspective view of a rotary closure system with a rotary closure cap and cover;

8 is a plan view of another rotary closure cap;

9 shows a longitudinal section through a further rotary closure cap;

Fig. 10 is a plan view of another rotary closure cap;

Fig. 1 1 is a detail view of a sealing point of another rotary closure cap;

FIG. 12 shows the rotary closure cap shown in FIG. 11 in the raised position;

13 shows a detailed view of a longitudinal section through a further exemplary embodiment of a rotary closure system in the opened state;

14 is a detail view of that shown in FIG

Turn-lock system in closed condition;

Fig. 15 is a perspective view of another embodiment of a rotary closure; - -

16 is a longitudinal section of that shown in FIG

Rotary closure, which is placed on a container neck, in the closed position;

17 shows a longitudinal section of the rotary closure shown in FIG. 15 in the open position;

18 shows in a longitudinal section a further embodiment of a screw cap with security band;

Fig. 19 schematically a longitudinal section of another

Embodiment of a rotary closure system.

Figure 1 shows a perspective view of an embodiment of a rotatable about a rotation axis D rotary cap 2 made of plastic, consisting of a cylindrical shell 2a in the basic form and a substantially circular disc-shaped top plate 2d with a circular arc in the circumferential direction of the top plate 2d extending outlet opening 2k, wherein the outlet opening 2k is subdivided by a plurality of circumferentially spaced webs 2w. In the illustrated embodiment, the webs 2w extend within the outlet opening 2k. However, the webs 2w may, for example, also run directly above the outlet opening 2k, in that the lower edge of the webs 2w extends at the level of the surface of the top plate 2d, so that the outlet opening 2k is designed as a slot in the circumferential direction, and the webs 2w immediately above the surface of the Head plate 2d the

Exiting outlet opening 2k, and thereby form a connection between the top plate 2d and the first side wall 2q. The outlet opening 2k opens into the interior of a drinking channel 2p. The drinking channel 2p forms a fluid-conducting connection between the outlet opening 2k and a mouthpiece 2n to which the lips are applied during drinking. The drinking channel 2p can be designed to extend in a wide variety of ways and be configured with differently shaped mouthpieces 2n in order to fulfill its function as a fluid-conducting channel. In the illustrated embodiment, the drinking channel 2 p is formed by two parallel to the rotation axis D extending, or perpendicular to the top plate 2d extending, different curved side walls 2q, 2r, wherein the first side wall 2q concentric with

Rotary axis D extends, and wherein the second side wall 2r has a larger circular diameter than the first side wall 2q. These side walls 2q, 2r are not projecting beyond the cylindrical shell 2a. The rotary closure cap 2 also includes a security band 21, which is connected via predetermined breaking points 2t with the jacket 2a.

Figure 2 shows the rotary closure cap 2 shown in Figure 1 in a plan view. The top plate 2d has an outlet opening 2k which runs in the circumferential direction in a circular arc, with eight outlet openings 2k arranged juxtaposed, concentric with the axis of rotation D, and separated by webs 2w. The cap mouthpiece 2n has a lens-shaped outer cross section. Under lenticular outer cross-section is understood a cross-section, which in

Essentially, as shown, consists of two pitch circles or two concave part walls, wherein the pitch circles preferably have a different radius of curvature. A cap mouthpiece 2n having such a lens-shaped outer cross-section feels very much to drink - -

pleasant, because the lip can be set very pleasant. The cap mouthpiece 2n is preferably configured such that the first side wall 2q extends over a circumferential angle of at least 30 degrees, and preferably over a circumferential angle between 45 degrees and 90 degrees. The cap mouthpiece 2n could, from the view shown in Figure 2, also be designed in a circular sector or circular segment.

Figure 3 shows in a longitudinal section a known from the prior art container neck 3, which standardized mass, a standardized geometry, and in particular a standardized container mouthpiece 3a with standardized arrangement of male thread 3d, Garantiebandring 3e and bottle neck ring 3j has. The majority of commercial beverage bottles is configured with such a container neck or similar 3, wherein the container neck 3 is connected to a container, not shown, for example, a plastic bottle such as a PET bottle, an aluminum container or a beverage carton packaging. The outer side of the container neck 3 has a projection 3c projecting over the outer surface 3c and configured as a circumferential external thread 3d

Guide 3d, which extends over a length of, for example, about two turns. The external thread 3d extends along the upper half of the outer surface 3c. Along the lower half of the outer surface 3c, a circumferential Garantiebandring 3e and below a circumferential Flaschenhalsring 3j are arranged. This embodiment corresponds to a standardized container neck 3, also referred to in English as "PCO neck" (plastic closure only). - -

The external thread 3d can be designed to be continuously circumferential, or can also have regularly spaced interruptions in order to form a pressure discharge channel extending in the direction of the axis of rotation D.

Figure 4 shows a longitudinal section through the rotary closure cap 2 along the section line A-A. On the inner side 2e of the top plate 2d an annular circumferential, one-piece sealing lip 2g is formed. The outlet openings 2k are with respect to the axis of rotation D in the radial direction outside one of the circumferential

Sealing lip 2g enclosed inner region 2y, namely disposed in the interior 2v, said inner region 2v, starting from the sealing lip 2g, may extend to a sealing portion 2c, within which the outlet openings 2k could be arranged. In the illustrated embodiment, the outlet opening 2k extends directly along the sealing ring lip 2g, or along the sealing ring lip 2g radially outer side with respect to the axis of rotation D radially. This results in the advantage that the liquid flowing out of the container neck 3 via the outlet opening 2k is hardly or only slightly deflected, which results in a low flow resistance, so that the liquid can flow out relatively quickly and relatively laminarly. The section line A-A passes through the web 2w, so that the outlet opening 2k is shown by dashed lines. The bridge 2w has the same wall thickness as the

Head plate 2d. Outside the sealing lip 2g an annular groove 2j is arranged. On the inside of the shell 2a, an internal thread 2b is arranged, which preferably has interruptions 2i. In a preferred embodiment, on the inside of the shell 2a, in addition, a stop 2u protruding against the inside - -

arranged, which abuts from a certain rotation of the rotary closure cap 2 on the outer thread 3d, and prevents further rotation of the rotary closure cap 2. The stop 2u can be configured in a variety of ways, for example as a circumferential ring. The stop 2u can also be configured such that it makes the rotation of the rotary cap 2 difficult but not prevented. Thus, when opening the rotary cap 2 can be felt, from which angle of rotation the stop 2u acts, that is, the rotation of the rotary cap 2 requires more force. This is preferably used as a feedback signal to indicate that the port 34b is fully open. In an advantageous embodiment, the rotary closure cap 2 can be further rotated under greater effort until it can be completely removed from the container 3. This embodiment has the advantage that the rotary cap 2 can also be completely removed, and the container 3 can thus be emptied or filled as previously known manner.

The lower end portion 2s of the shell 2a is as

Seal section 2c designed with a designed as a thin spot, flexible portion 2o. The safety belt 21 has a plurality of circumferentially spaced retaining webs 2m, each having a support surface 2h. The security tape 21 is over invisible, behind the

Haltestegen 2m arranged predetermined breaking points connected to the jacket 2a.

FIG. 5 shows in a longitudinal section along the section line BA the rotary closure 2 shown in FIG - -

Container neck 3 is arranged and this tightly closes. The sealing lip 2g rests against the inner surface 3b of the container neck 3 over its entire circumference, so that the container neck 3 is tightly closed. In the exemplary embodiment shown, the sealing section 2c extends peripherally on the tamper-evident ring 3e, so that a sealing point 34a is formed between the sealing section 2c and the tamper evident ring 3e, and a cavity 34 closed against the bottom is formed between the container neck 3 and the rotary closure cap 2. The bearing surfaces 2h of the retaining webs 2m are at the bottom of the tamper evident ring 3e. The flexible portion 2o serves, in particular, for the lower section to expand onto the container neck 3 during the bouncing or screwing on of the rotary closure cap 2, so that the security band 21 and in particular the holding webs 2m slide over the guarantee band ring 3e without being damaged.

FIG. 6 shows the rotary closure system 1 shown in FIG. 5 in the opened state. The rotary closure cap 2 was raised by rotation about the axis of rotation D, at least until a passage opening 34b is formed between the container neck 3 and the sealing lip 2g, via which the fluid in the container can escape into the drinking channel 2p along the outlet opening 2k. The maximum possible stroke of the rotary closure cap 2 in the direction of the axis of rotation D is preferably limited by the stop 2u. The sealing section 2 c is preferably configured such that the sealing point 34 a is also fluid-tight, liquid-tight or at least partially liquid-tight, even when the rotary closure cap 2 is open, in order to prevent the liquid from flowing out in the region of the liquid - -

Guarantee ring 21 to prevent. During rotation and lifting of the rotary closure cap 2, the bearing surfaces 2h bear on the underside of the guarantee band ring 3e, so that the predetermined breaking points 2t break during the opening of the rotary closure cap 2 at some point.

In a further embodiment of the rotary closure cap 2, the sealing section 2c could also be dispensed with. If no sealing is required in the region of the guarantee band ring 3e, the lower region of the rotary closure could also be provided with a guarantee band ring 21, which has no holding webs 2m, and which rests directly on the underside of the guarantee band ring 21.

In a particularly preferred embodiment, the rotary closure cap 2 according to the invention is designed for use with a standardized container neck, and advantageously also has the same sealing properties as the previously used, standardized rotary closure caps. Since the inventive rotary closure caps 2 serve as a substitute for previously used, standardized rotary closure caps, the inventive rotary closure caps 2 should also be suitable in particular for pressurized, carbonated drinks. In order to form a rotary closure cap 2 with excellent mechanical properties, in particular also pressure-resistant properties, the outlet openings 2k are advantageously separated from one another by webs 2w, wherein the webs 2w in the course direction of the rotation axis D preferably have the same thickness as the top plate 2. Give these webs 2w the rotary cap 2, despite the outlet openings 2k a - -

excellent mechanical stability, especially against deformation, so that the rotary cap 2 is also suitable for carbonated, pressurized drinks.

FIG. 7 shows a perspective view of a rotary closure system 1 with a container neck 3 and a screw cap 2 fastened thereto, the mouthpiece 2n being protected from contamination by means of a cover 5 or cap 5 which has been slipped over it.

FIG. 8 shows a plan view of a further rotary closure 2 with an outlet opening 2k, which, divided by webs 2w, has four separated part outlet openings. As can be seen in FIG. 5 or 6, the outlet opening 2k must always be arranged in such a way that it penetrates the rotary closure 2 somewhere in the area between the sealing lip 2g and the sealing point 34a. Within this area, an outlet opening 2k may be subdivided and arranged with any desired number of webs 2w in such a way that it opens into the mouthpiece 2n forming the outlet channel 2p.

FIG. 9 shows two further, differently extending mouthpieces 2n, wherein the one mouthpiece 2n shown completely in solid lines extends at an angle of 45 ° with respect to the axis of rotation D, whereas the mouthpiece 2n, which is shown only partially in solid lines, at an angle of 90 ° ° with respect to the axis of rotation D runs. The mouthpiece 2n may have an angle as required, which is preferably in the range between 0 ° and 120 °. - -

FIG. 10 shows a top view of a further rotary closure 2, which has a single outlet opening 2k, which extends in a circular arc shape over an angle of approximately 90 ° and is designed as a slot. Such a rotary closure 2 is preferably suitable for closing containers without overpressure. The figures shown in the figures, e.g. 2, 8 or 10, illustrated outlet opening 2k extends in the circumferential direction preferably over an angle of at least 30 degrees.

Figure 1 1 shows in a longitudinal section a detail view of another embodiment of the sealing portion 2c. This is configured such that when the rotary closure cap 2 is completely closed, a passage opening 34c is formed between the container neck 3 and the rotary closure cap 2 in order to pressurize the gas in the interior of the container 3 when the rotary closure cap 2 is opened along the cavity 34 via the passage opening 34c to lead to the outside. As can be seen from the detail view according to FIG. 12, the sealing section 2c can be designed in such a way that it is raised when the axis of rotation D is in the direction of progression

Rotary cap 2 rests all around the tamper evident ring 3e, and thereby forms a sealing point 34a, so that preferably no liquid can escape through this sealing point 34a.

Figures 13 and 14 show a longitudinal section of another embodiment of a rotary closure system 1 with container neck 3 and screw cap 2. The inside 2e of the top plate 2d in turn has an annular circumferential, one-piece sealing lip 2g, which, in contrast to the in - -

Figures 5 and 6 illustrated embodiment, outside the container mouthpiece 3a extends. The rotary closure 2 has an outlet opening 2k, which, as shown in FIG. 13, is fluid-conductively connected to the interior of the container mouthpiece 3a via the passage opening 34b when the rotary closure 2 is open. When the rotary closure 2 is closed, as shown in FIG. 14, the interior of the container mouthpiece 3a is closed by the circumferential sealing lip 2g. In addition, the outlet opening 2k is closed by the sealing lip 2g resting against the inner wall of the jacket 2a. Figure 14 shows another embodiment of a mouthpiece 2n, which is designed as a circumferential hump.

Figures 15, 16 and 17 show a further embodiment of a rotary closure 2, which, in contrast to the embodiment shown in Figures 5 and 6, has no thread, and therefore during rotation about the rotation axis D also performs no lifting movement.

FIG. 16 shows the rotary closure 2 in a longitudinal section in the closed state and FIG. 17 shows the rotary closure 2 rotated by 180 degrees in the opened state. The container mouthpiece 3a has a circumferential guide 3d and a circumferential bottle neck ring 3j. The rotary closure 2 has a circumferential guide 2b, which encloses the circumferential guide 3d and is rotatably mounted with respect thereto. The rotary closure 2 has on the inner side 2e of the top plate 2d an annular peripheral, one-piece sealing lip 2g, which has an offset in the direction of the rotation axis D. The container neck 3 has a preferably similar to the course of the sealing lip 2g - -

simulated course on, with an end face 3m, which also has an offset in the circumferential direction of the axis of rotation D in the circumferential direction. The rotary cap 2 has, as shown in Figure 15, an outlet opening 2k, with a plurality of the outlet opening 2k subdividing part openings in webs 2w. The outlet opening 2k penetrates the top plate 2d and / or the shell 2a, wherein these outlet opening 2k are arranged to extend between the sealing lip 2g and the internal thread 2b, and the mouthpiece 2n is correspondingly arranged so that the outlet opening 2k opens into the mouthpiece 2n. The sealing lip 2g abuts against the inner surface 3b of the outlet port 3g over the entire circumference, so that the outlet port 3g is completely sealed.

FIG. 17 shows the rotary closure 2 rotated by 180 ° with respect to the arrangement according to FIG. 16 and thus opened. The sealing lip 2g and the end face 3m are designed to extend mutually adapted so that a passage opening 34b is formed between them in the illustrated open position between the drinking channel 2p, the outlet opening 2k and the passage opening 34b, a fluid-conducting channel is formed in the interior of the container neck 3. The sealing lip 2g could also, as shown in Figures 13 and 14, be arranged such that the sealing lip 2g surrounds the container mouthpiece 3a from the outside.

The rotary closure 2 shown in FIGS. 15 to 17 preferably has a stop in order to limit the opening and closing to a rotation range of, for example, 180 degrees. An advantage of this rotary closure 2 is the fact that this - -

can be opened and closed as often as you like. The plastic rotary closure 1 can also be designed such that it is completely opened at a different angle of rotation than 180 degrees, for example at 45 degrees, 90 degrees or 270 degrees, ie the passage opening 34b has a maximum cross section. For this purpose, it is necessary to adjust the course of the sealing lip 2g and the course of the end face 3m in the circumferential direction to the rotation axis D accordingly. FIG. 19 shows a longitudinal section of such an embodiment, in which the passage openings 34b are completely opened over a rotation angle of 90 degrees. Within the section 3z, the sealing lip 2g extends downward, while the end face 3m is raised, and abuts against the inside of the top plate 2 and 2d. In this case, the sealing lip 2g and the end face 3m are arranged to extend in such a manner that after rotation of the rotary closure cap 2 by 90 degrees, the opening of the container mouthpiece 3a is circumferential and thus completely sealed. The rotary closure system 1 shown in FIG. 19 has two opposite passage openings 34b, wherein the liquid usually exits through the passage opening 34b shown on the left, whereas air flows into the container 3 via the outlet opening 2k, the cavity 34 and the passage opening 34b shown on the right. The passage 34b shown on the right could also be dispensed with.

In a further advantageous embodiment, the course of the sealing lip 2g and the course of the end face 3m in the circumferential direction to the axis of rotation D can be configured adapted such that the total area of the passage opening 34b increases in a predetermined ratio, for example linear or - -

staircase, so that the total area of the passage opening 34b is determined by the rotational angle of the rotary closure 2. For example, markings may be provided on the rotary closure 2 and on the container neck 3, which mark the relative opening of the passage opening 34b, eg ¹ A, ¹ A, ³ A and 1. Such a plastic rotary closure designed in this way may be advantageous for smaller children, for example Limit total amount of effluent per unit of time.

FIG. 18 shows a further embodiment of a

Plastic rotary closure 1, which, in contrast to the embodiment shown in Figures 15 to 17, a circumferential safety belt 21 which is connected via predetermined breaking points 2t with a safety ring 2x. The safety ring 2x is part of the rotary closure 2. Should the screw cap 2 raise unintentionally, for example because the pressure in the container 3 rises, and thereby the rotating guide 2b no longer attacks the rotating guide 3d, it is the task of the safety ring 2x the enclose surrounding guide 3d such that a further lifting of the rotary closure 2 is prevented. The security band 21 has, for example, on the front side facing the bottleneck ring 3j not visible, for example, sawtooth notches, wherein the end face facing surface of the bottle neck ring 3j correspondingly adapted notches, which prevents rotation of the security band 21 in the circumferential direction to the rotation axis D, so when opening the screw cap 2 break the predetermined breaking points 2t.

Claims

- PERSONAL CLAIMS

1. Rotary cap (2) made of plastic for a container neck (3) comprising a container mouthpiece (3a) with an outer circumferential guide (3d), consisting of a cylindrical shell in the basic form (2a) and a substantially circular disc-shaped head plate (2d), on the inside (2e) of an annular circumferential, one-piece sealing lip (2g) is formed, wherein the rotary closure cap (2) has an outlet opening (2k), which outside one of the circumferential sealing lip

(2g) is enclosed in a circular arc extending in the circumferential direction of the top plate (2d), and wherein a cap mouthpiece (2n) on the outside of the rotary closure cap (2) is formed, and wherein the outlet opening (2k) in the cap mouthpiece (2n) opens, and wherein the cylindrical jacket (2a) has an inner circumferential guide (2b), which is designed so cooperating with the outer circumferential guide (3d), that the rotary closure cap (2) about a rotational axis (D) rotatably on Container mouthpiece (3a) can be fastened.

2. Rotary cap (2) according to claim 1, characterized in that the outlet opening (2k) is designed as a slot.

3. Rotary cap (2) according to claim 1, characterized in that the outlet opening (2k) is divided by a plurality of circumferentially spaced webs (2w). - -

4. Rotary cap (2) according to one of the preceding claims, characterized in that the outlet opening (2k) in the region of the top plate (2d) is arranged.

5. Rotary cap (2) according to claim 4, characterized in that the outlet opening (2k) extends directly along the sealing lip (2g).

6. Rotary cap (2) according to one of claims 1 to 3, characterized in that the outlet opening (2k) in the transition region between the top plate (2d) and cylindrical shell (2a) is arranged.

7. Rotary cap (2) according to one of the preceding claims, characterized in that the outlet opening (2k) extends in the circumferential direction of the top plate (2d) over an angle of at least 30 degrees.

8. Rotary cap (2) according to one of the preceding

Claims, for a container (3) whose mouthpiece is designed as a standardized container mouthpiece (3a), with a guide (3d) designed as an external thread (3d), a circumferential guarantee band ring (3e) and a circumferential bottle neck ring (3j), wherein the inside circumferential guide (2b) of the rotary closure cap (2) is designed as an internal thread.

9. Rotary cap (2) according to claim 8, characterized in that the cylindrical shell (2a) on the inside, on which the top plate (2d) opposite

End portion (2s), a sealing portion (2c) which is designed to extend in the direction of the axis of rotation (D) such that the sealing portion (2c) at least - -

When the screw cap (2) is partially raised, it rests circumferentially on the guarantee band ring (3e).

10. Rotary cap (2) according to claim 9, characterized in that the sealing portion (2c) is designed to extend in the direction of the axis of rotation (D) that the sealing portion (2c) even with firmly closed screw cap (2) circumferentially on the guarantee band ring (3e ) is present.

1 1. Rotary cap (2) according to one of claims 10 to 7, characterized in that at the end portion (2s), the sealing portion (2c) below, a circumferential guarantee strip (21) is formed, which at least one to the guarantee band ring (3e) out protruding, at least partially along the inside of the sealing portion (2c) extending retaining web (2m) has.

12. Rotary cap (2) according to one of claims 8 to 10, characterized in that the end portion (2s) has a flexible portion (2o), which has a smaller wall thickness than that between the flexible portion

(2o) and top plate (2d) extending jacket (2a).

13. Rotary cap (2) according to any one of claims 8 to 12, characterized in that on the inside of the jacket (2a) in the interior projecting stop (2u) is formed such that this after a certain

Rotational movement of the rotary cap (2) on the external thread (3d) abuts.

14. Rotary cap (2) according to one of claims 1 to 7, characterized in that the container mouthpiece (3a) - -

an outlet opening (3g) having a circular inner cross-section, that the position of the rotating with respect to the axis of rotation (D) circumferential end face (3m) in the direction to the axis of rotation (D) changes, and wherein the position of the relative to the rotation axis (D) circumferential sealing lip (2g ) in

The direction of rotation of the axis of rotation (D) also changed, in such a manner relative to the outlet opening (3g) adjusted that the rotary closure cap (2) has a closed position in which the sealing lip (2g) over the entire circumference on the inner or outer wall of the outlet opening ( 3g), and in that the rotary closure cap (2) has an open position rotated in the direction of rotation (D) in relation to the closed position, in which the sealing lip (2g) rests against the inner or outer wall of the outlet opening (3g) only over part of the circumference, thus between the

Outlet opening (3g) and the sealing lip (2g) results in a passage opening (34b), so that a passage between the outlet opening (3g) and the outlet opening (2k) is formed.

15. Rotary cap (2) according to claim 14, comprising a stop which cooperates with the container mouthpiece (3a) such that the rotary closure cap (2) in the direction of rotation (D) has a maximum angle of rotation of 270 degrees.

16. Rotary cap (2) according to one of the preceding claims, characterized in that the

Cap mouthpiece (2n) forms a drinking channel (2 p), with in the direction of rotation of the axis (D) extending over the top plate (2) projecting side walls (2q, 2r). - -

17. Rotary cap (2) according to one of the preceding

Claims, characterized in that the cap mouthpiece (2n) has a lenticular outer cross-section.

18, rotary closure cap (2) according to claim 16 or 17, characterized in that the one side wall (2q) concentric with the axis of rotation (D) and has a radius of curvature (Rl), and that the second side wall (2r) has a larger radius of curvature (R2 ) as the first side wall (2q).

19. Rotary cap (2) according to one of claims 1 to 16, characterized in that the cap mouthpiece (2n) is configured in the form of a circle sector or a circle segment.

20. Rotary cap (2) according to one of claims 1 to 15, characterized in that the cap mouthpiece (2n) forms a drinking channel (2p), with the axis of rotation (D) transversely or perpendicularly extending side walls (2q, 2r).

21. Rotary cap (2) according to one of the preceding claims, characterized in that the outlet openings (2k) are arranged with respect to an end face (3m) of the container mouthpiece (3a), that the outlet openings (2k) at firmly closed screw cap (2) the end face (3m) abut.

22. Rotary cap (2) according to one of the preceding claims, characterized in that the sealing lip

(2g) is arranged such that it encloses the container mouthpiece (3a) from the outside.