WO2021105176A1

WO2021105176A1 - Reclosable pour element for cardboard/plastic composite packaging with an anchor ring for securely attaching a screw cap

Info

Publication number: WO2021105176A1
Application number: PCT/EP2020/083309
Authority: WO
Inventors: Markus Leuenberger; David Koller; Hansjörg Huber; Markus Wassum
Original assignee: Sig Technology Ag
Priority date: 2019-11-29
Filing date: 2020-11-25
Publication date: 2021-06-03
Also published as: EP4065483B9; JP2023507896A; EP4282774A2; EP4065483A1; US20230025075A1; EP4065483C0; MX2022006055A; PL4065483T3; EP4065483B1; ES2964001T3; CN114746343A; EP4282774A3; BR112022010291A2

Abstract

The invention relates to a reclosable pour element for cardboard/plastic composite packaging (P), in particular a beverage packaging, comprising a base element (2, 2', 2") which has a circumferential securing flange (1, 1', 1") and an outer thread (10, 10'); opening means arranged in the interior of the base element (2, 2', 2") at least in the unopened state of the pour element; and a screw cap (3, 3', 3") with an inner thread, wherein the opening means is designed such that when the composite packaging (P) is first opened, a pour opening is produced within the pour element upon unscrewing the screw cap (3, 3', 3") by breaking open the composite material of the packaging (P) or a barrier layer located in the base element (2, 2', 2''). In order to ensure the attachment of the screw cap to the pour element when using such a reclosable pour element even when the screw cap is screwed off, an anchor ring (4, 4', 4'') which is rotationally fixed to the screw cap (3, 3', 3") is arranged below same, said anchor ring being freely rotatable radially about the base element (2, 2', 2") and connected to the base element (2, 2', 2") in a tension-resistant manner in the axial direction, and the anchor ring (4, 4', 4") is connected to the screw cap (3, 3', 3") in an articulated manner via a hinge element (5, 5'), the pivot axis of which is oriented tangentially to the outer circumference of the screw cap (3, 3', 3"), in order to securely attach the screw cap (3, 3', 3") to the base element (2, 2', 2") even when the screw cap is screwed off.

Description

Resealable pouring element for cardboard / plastic composite packs with an anchor ring for the secure connection of a

Screw cap

The invention relates to a resealable pouring element for cardboard / plastic composite packs, in particular beverage packs, with a base element having a circumferential fastening flange and an external thread, with opening means arranged at least in the unopened state of the pouring element inside the base element and a screw cap with internal thread, the opening means so are designed that when the composite pack is first opened when unscrewing the screw cap by breaking open the

Composite material of the pack or a barrier layer located in the base element, a pouring opening is created within the pouring element.

A generic pouring element is known from DE 10 2006016 113 B3, which goes back to the applicant. To assemble the pouring element, the screw cap is moved over the cutting element protruding from the pouring element and pressed (bounced) onto the base element together with it. As a tamper-evident seal, a plate is molded onto the screw cap in one piece and is connected to the screw cap via connecting bridges. For connection to the base element, the plate has pins on its underside which engage in corresponding recesses in the flange of the base element and are caulked from below after assembly. The connecting bridges break when the pouring element is opened for the first time, so that the screw cap is then only loosely attached to the pouring element and the composite pack.

In order to ensure that the screw lids of composite packs do not inadvertently get into the environment, it is desirable to attach screw lids to their respective To securely tie the composite pack, so that loose plastic parts are reliably avoided even when the pack is open.

Elements that ensure a secure connection of screw lids to their respective packs even when they are open have long been known from the prior art in the area of closures for commercially available PET bottles. The known PET bottles have in common that the cylindrical base body has a bottle neck that is significantly narrower than the base body, so that a screw cap provided with a connecting element can be pivoted away by well over 90 °.

From EP 1 124734 B1 a closure device for a PET bottle with a ring arranged under the screw cap, which is connected to the screw cap via a film hinge and prevents the screw cap from being pulled off even in the open state, is known.

No. 5,215,204 A shows a closure cap for a bottle with a ring which is arranged under the screw cap and which is firmly connected to the screw cap via two connecting bridges. The ring and the bottle are designed in such a way that the ring cannot be pulled off the bottle.

Furthermore, a screw cap for a conventional bottle is known from WO 2009/048273 A2. The screw cap consists of a screw cap and a ring attached via a film hinge. Here, too, the ring ensures that the screw cap is connected to the bottle with tensile strength in the axial direction.

Proceeding from this, the present invention is based on the object of designing and developing a reclosable pouring element for cardboard / plastic composite packs of the type mentioned at the outset so that the screw cap can be connected to the screw cap even when it is unscrewed The pouring element is ensured. For this purpose, a tensile connection between the screw cap and pouring element is provided, in which the screw cap cannot be detached from the pouring element in the axial direction with a force of at least 10 to 30 N, which is usually necessary for opening a commercially available screw cap for the first time.

Furthermore, it is desirable that a reliable locking of the screw cap is ensured in an open position with respect to the pivoting open, in order to enable pouring out of the composite pack without undesired pivoting of the screw cap. A radial adjustment of the screw cap in the locked open position is particularly advantageous in order to enable pouring from any direction of the pouring element, since composite packs are not essentially rotationally symmetrical like commercially available PET bottles or have an essentially square cross-section and from each side can be poured out equally well. It is also desirable that, in the locked open position, there is as much free space as possible in front of the pouring opening in spite of the opening means often present in the screw cap in the case of cardboard / plastic composite packs, which are necessary for producing a pouring opening.

In a reclosable pouring element with the features of the preamble of claim 1, this object is achieved in that underneath the screw cap there is an anchor ring which is connected to it in a rotationally fixed manner and which can be rotated radially freely around the base element and is connected to the base element with tensile strength in the axial direction and for secure connection of the screw cap to the base element, even in the unscrewed state, the anchor ring is articulated to the screw cap via a hinge element whose pivot axis is oriented tangentially to the outer circumference of the screw cap. The tight connection of the screw cap to the

Basic element ensures that the screw cap is also in the open state the pouring element is not a loose plastic part and this cannot get into the environment as a loose plastic part. The invention thus makes a valuable contribution to reducing environmental pollution. The film hinges usually used to connect a screw cap to a base element often tear off after only a small number of opening processes and therefore cannot guarantee a secure connection of a screw cap to its base element. The special design of the hinge element ensures that the screw cap does not become detached from the rest of the base element even after the pouring element has been opened several times.

Another teaching of the invention provides that the anchor ring has a circumferentially extending slot which separates the anchor ring in one section into upper parts and a lower part, the upper parts and the lower part being arranged at a distance from one another in the axial direction. It is advantageous if the slot is arranged in the circumferential direction in the area of the hinge element. The hinge element can thus be connected to the upper parts of the anchor ring in such a way that the end of the upper parts facing the hinge element is twisted after the screw cap has been pivoted open.

In a particularly preferred embodiment of the invention, the hinge element is arranged in the circumferential direction in the center of the slot. This ensures that the two sides of the upper parts of the anchor ring are evenly loaded when the screw cap is pivoted open.

A preferred embodiment of the invention provides that the lower end of the hinge element in the unopened state of the pouring element protrudes over the lower end of the upper parts of the anchor ring downward in the direction of the fastening flange. If the screw cap is pivoted open after it has been unscrewed, the lower end of the hinge element folds in Direction of the slot around, so that at an opening angle of 120 ° to 150 °, the screw cap is locked in its open position with respect to its pivoting open. In this state, the screw cap can no longer pivot back without applying a force from the outside. This has the great advantage that the screw cap does not automatically pivot back when pouring and does not come into contact with the product during the pouring process.

In a particularly preferred embodiment, the screw cap can be freely rotated radially in its locked open position. This has the great advantage that the screw cap can be turned into a position desired by the user. In the locked position, however, a slight external force must be applied in order to enable rotation, since the fixing of the screw cap with respect to its pivoting open creates an increased frictional resistance between the hinge element and the base element. However, the increased frictional resistance is also desirable so that the screw cap does not move easily in the direction of the pouring jet during pouring, caused by the force of gravity.

Another teaching of the invention provides that the hinge element with respect to its pivot axis in the unopened state above the lower third of the

Base element is arranged. The arrangement of the hinge element above the lower third ensures that the screw cap can realize an open position with an opening angle of 120 ° to 150 ° before the screw cap hits the composite package. Since composite packs typically do not have a bottle neck as is the case with PET bottles, the pivoting movement of the screw cap is much more limited than with PET bottles. However, in order to achieve a sufficiently large opening angle for a pleasant pouring process, it is desirable to arrange the hinge element as high up as possible. According to a further preferred embodiment of the invention, the base element has an outwardly protruding and essentially circumferential collar on its outside. By providing a substantially circumferential web directed towards the base element at the lower end of the anchor ring, which is arranged below the collar, the anchor ring is reliably prevented from being pulled off over the collar. Also, at least either the collar or the web can be interrupted at one or more points, provided that it is ensured that the anchor ring with its web facing the base element cannot slip over the collar provided on the base element.

In a particularly preferred embodiment of the invention, the collar is arranged in the unopened state in the axial direction in the upper area of the anchor ring, so that when the screw cap is unscrewed, the hinge element can move in the axial direction until the web comes into contact with the collar. With the greatest possible distance in the axial direction between the web and the collar in the unopened state of the pouring element, the anchor ring including the hinge element can cover the greatest possible distance upwards when the screw cap is screwed on and pivoted open, so that the pivot axis of the hinge element is offset upwards. A pivot axis arranged as high as possible is desirable in order to enable the screw cap to have the largest possible opening angle for easy pouring, despite the bottle neck not being present on composite packs.

In a particularly preferred embodiment of the invention, when the screw cap is pivoted away, the pivot axis of the hinge element is arranged in the axial direction in the upper half of the base element, particularly preferably in the upper third of the base element.

According to a preferred development of the invention it is provided that on the base element below the collar in the direction of the anchor ring to the outside protruding and perpendicular to the mounting flange extending ribs are provided. These ribs ensure that the anchor ring always has a certain distance from the base element in the radial direction. As a result, the anchor ring is centered with respect to the base element in every condition.

According to a preferred embodiment of the invention, the opening means comprise a cutting element arranged inside the base element and at least one driving web arranged inside the screw cap and connected to it in a form-fitting or material-locking manner, which is preferably attached as close as possible to the hinge element in the circumferential direction. The hinge element in the

The external thread of the flange can be locked in order to keep the screw cap open.

However, it is also possible to arrange the driver web as far away as possible from the hinge element in the circumferential direction. This is useful if the hinge elements should not be in the way when the screw cap is opened / tilted away. This enables a clean opening / tipping away without the hinge element and the upper edge of the pouring spout getting caught.

In a preferred embodiment of the invention, a plurality of driver webs distributed evenly over the circumference is provided.

In the pivoted-open state, this driver web can at least partially protrude from the interior of the screw cap. It is therefore particularly important that a sufficiently large opening angle of the screw cap can be achieved.

The pouring element according to the invention preferably has at least one tamper-evident seal between the fastening flange and the anchor ring or the screw cap. This can consist of a band, one end of which is firmly connected to the anchor ring and in which the other end is connected to the anchor ring by means of a predetermined breaking point in such a way that the predetermined breaking point of at least one mandrel element arranged on the fastening flange Unscrewing the screw cap is broken and thus indicates to the consumer that the first opening has already taken place.

According to an alternative embodiment of the pouring element according to the invention, a further ring is arranged below the anchor ring, which is connected to the anchor ring via a plurality of material bridges and serves as a tamper-evident seal. Here, the screw cap, the anchor ring and the further ring serving as a tamper-evident seal are manufactured in one piece. The ring is preferred by blocking inwardly protruding from the ring

Bars with locking elements arranged over the circumference of the base element can only be rotated to a limited extent, so that when the screw cap is unscrewed for the first time it is released from the anchor ring by tearing off the material bridges and remains in its position on the base element.

In order to ensure that the ring cannot be removed from the base element even when the screw cap is open, a further embodiment of the invention provides that the base element has an outwardly protruding and essentially circumferential collar on its outside, the clear inside diameter of the collar being smaller as the clear distance between the opposing webs of the ring.

Another advantageous teaching of the invention provides that the fastening flange of the pouring element is connected to the inside of the composite pack. A corresponding composite pack has a at the point of the later pouring opening

Material recess on. For assembly, the pouring element is passed through the interior of the composite pack, positioned in the area of the material recess and then connected to the inside of the composite pack. In this embodiment of the invention, the inside of the base element is closed on the pack side in the unopened state, so that the product located in the composite pack cannot flow into the pouring element in the unopened state. The In this embodiment of the invention, opening means comprise an opening element arranged in the unopened state in the interior of the base element and cohesively connected to it, and at least one force transmission element which is arranged in the interior of the screw cap and is cohesively connected to it. The opening element is positively connected to the at least one force transmission element and is separated from the base element at predetermined breaking points when the pouring element is opened for the first time, triggered by the rotation of the at least one force transmission element, so that there is no longer any material connection between the base element and the opening element. From this point on, the opening element is only positively connected to the at least one force transmission element, so that it cannot get into the composite pack present under the pouring element. In the pivoted-open state, the opening element can at least partially protrude from the interior of the screw cap. Corresponding opening means are already known per se from JP 5857668 B2.

The invention is explained in more detail below with the aid of a drawing showing only preferred exemplary embodiments

Fig. 1 shows a first embodiment of a pouring element according to the invention in the unopened state (without cardboard / plastic composite pack) in a perspective view,

FIG. 2 shows the pouring element from FIG. 1 in a side view,

3 shows a base element of the pouring element from FIG. 1 in a perspective illustration,

4 shows the pouring element from FIG. 1 in vertical section along the line IV-IV, 5 shows the pouring element from FIG. 1 at the beginning of the screwing-on process of the screw cap in a perspective view, FIG. 6 the pouring element from FIG. 1 with the screw cap already screwed on but still closed in a side view in half section

7 shows the pouring element from FIG. 1 with the screw cap unscrewed and pivoted away in a side view,

8 shows the pouring element from FIG. 1 with the screw cap unscrewed, pivoted away and locked, in a side view,

9 shows a second exemplary embodiment of a pouring element according to the invention in the unopened state (without cardboard / plastic composite pack) in a perspective view,

10 the pouring element from FIG. 9 in vertical section along the line X-X, FIG. 11 the pouring element from FIG. 9 in a horizontal section along the line XI-XI from FIG. 10,

12 shows the pouring element from FIG. 9 with the screw cap already screwed on but still closed in a side view in half section along the line XII-XII from FIG. 11 and FIG

13 shows a further embodiment of a pouring element according to the invention in vertical section. In the drawing, a preferred embodiment of a pouring element according to the invention is shown to its functionality when opening a To make compound packing clear. 1 shows a pouring element according to the invention without a composite packing in a perspective view. The pouring element has a circumferential fastening flange 1 having a base element 2 (which is not visible in FIG. 1) and a screw cap 3, which is used for initial opening and for reclosing a

Compound packing serves on.

Underneath the screw cap 3 there is arranged an anchor ring 4 that is non-rotatably connected to it, in order to reliably prevent the screw cap 3 from being removed from the base element 2 or a composite packing provided therewith. For this purpose, the screw cap 3 and the anchor ring 4 are connected to one another in an articulated manner via a hinge element 5, the pivot axis of which is oriented tangentially to the outer circumference of the screw cap 3. The anchor ring 4 has a slot 6 running in the circumferential direction, which separates the anchor ring 4 in one section into upper parts 4A and a lower part 4B, the upper parts 4A and the lower part 4B being arranged at a distance from one another in the axial direction. In comparison to the rest of the screw cap 2, the hinge element 5 can be designed with a larger, the same or a smaller wall thickness. In FIG. 2 it can be clearly seen that the slot 6 is arranged in the circumferential direction in the center of the hinge element 5. The hinge element 5 is connected to the upper parts 4A of the anchor ring 4 and, with respect to its pivot axis, is arranged above the lower third of the base element 2 in the unopened state. In addition, it can be seen from FIG. 2 that the lower end of the hinge element 5 protrudes in the unopened state of the pouring element over the lower end of the upper parts 4A of the anchor ring 4 downward in the direction of the fastening flange 1. In addition, ribs 7 protruding outward in the direction of anchor ring 4 and extending perpendicular to fastening flange 1 are provided on the lower region of base element 2. These center the anchor ring 4 with respect to the base element 2 and ensure uniform friction when the anchor ring 4 is rotated. FIG. 3 shows the base element 2 of the pouring element shown in FIG. 1. It can be seen that the base element 2 has an external thread 8, by means of which the screw cap 3, not shown in FIG. 3, can be screwed onto the base element 2. The base element 2 also has on its outside above the ribs 7 an outwardly protruding and radially circumferential collar 9.

Furthermore, a cutting element 10 can be seen in the interior of the base element 2, which, when the composite pack is first opened, creates a pouring opening within the pouring element by screwing on the screw cap 3.

In Fig. 4, the pouring element is now shown in vertical section in the unopened state. In Fig. 4 it can be seen that the collar 9 with its outer peripheral surface in the upper region of the anchor ring 4, the inner surface of the

Anchor ring 4 touches. According to the invention, the anchor ring 4 has at its lower end a radially circumferential web 11 directed towards the base element 2, which is arranged below the collar 9 provided on the base element 2. This prevents the anchor ring 4 from being pulled off beyond the collar 9. The collar 9 is in the unopened state of the pouring element in the upper region of the

Anchor rings 4 are arranged so that when the screw cap 3 is screwed on, the movement of the anchor ring 4 and thus also that of the hinge element 5 in the axial direction upwards is made possible until the web 11 comes into contact with the collar 9. In the preferred embodiment shown in FIG. 4, an opening means consisting of the cutting element 10 arranged in the interior of the base element 2 and driving webs 12 arranged in the interior of the screw cap 3, which are firmly connected to it, can be seen. When the composite pack is first opened, the cutting element 10, which has an external thread 13, is opened by means of the driver webs 12 and an internal thread 14 formed on the base element 2 by screwing on the screw cap 3 in the direction of the Composite pack conveyed so that a pouring opening is created within the pouring element. It can be clearly seen that the driver webs 12 protrude downwards compared to the outer circumferential surface of the screw cap 3, so that they protrude from the interior of the screw cap 3 in the pivoted-open state.

5 to 8 finally illustrate the function of the pouring element according to the invention during the opening process of the screw cap 3. In FIG. 5, the pouring element is at the beginning of the screwing-on process

Screw cap 3 shown. It can be seen here that the anchor ring 4 is connected to the base element 2 in a radially freely rotatable manner, so that the anchor ring 4 moves with the rotary movement of the screw cap 3. 6 shows the pouring element with the screw cap 3 already screwed on but still closed. On the left side of FIG. 6, the pouring element is shown in a side view, while the right side of FIG. 6 shows a vertical section. The anchor ring 4 and, as a result, the hinge element 5 have also moved upwards due to the movement of the screw cap 3 upwards. In this state, the collar 9 provided on the base element 2 and the web 11 arranged on the anchor ring touch each other. The slot 6 has enlarged at least in the center in the axial direction as a result of the screw cap 3 being conveyed upwards, so that the pivot axis of the hinge element 5 moves axially Direction has shifted further up.

In Fig. 7, the pouring element is shown in an open state and with a pivoted-away screw cap 3 with a composite pack. As in FIG. 6, it can also be seen here that the anchor ring 4 cannot slip beyond the collar 9, so that it is connected to the base element 2 in a tensile manner in the axial direction in spite of its rotatability with respect to the base element 2. As a result, the anchor ring 4 and thus also the screw cap 3 are reliably prevented from being pulled off.

In addition, it can be seen from FIG. 7 that by pivoting the screw cap 3 open, the upper parts 4A of the anchor ring 4 twist at one end, which establish a connection to the hinge element 5, but do not tear. The hinge element 5 rotates by pivoting the screw cap 3 in the direction of the slot 6 until it folds over as shown in FIG. 8, so that it is locked in its open position at an opening angle of 120 ° to 150 ° with respect to its pivoting open. The screw cap 3 is locked in its

The open position can nevertheless be freely rotated radially, even if a certain external force has to be applied due to increased frictional resistance in order to enable rotation. In FIGS. 7 and 8 it can be clearly seen that driver webs 12 of the

Opening means protrude from the interior of the screw cap 3 in the pivoted-open state.

In addition, it can be seen from FIGS. 7 and 8 that a band 15 serving as a tamper-evident seal is attached to the anchor ring 4, one end of which is firmly connected to the anchor ring 4 and the other end of which is connected to the anchor ring 4 by means of a predetermined breaking point is connected in such a way that the predetermined breaking point is broken open by a mandrel element 16 arranged on the fastening flange 1 when the screw cap 3 is screwed on for the first time.

9 shows a further embodiment of a pouring element according to the invention without a composite packing in a perspective view. As in the first exemplary embodiment according to FIG. 1, this pouring element has a circumferential fastening flange 1 'and a screw cap 3'. As in the first exemplary embodiment, underneath the screw cap 3 'there is an anchor ring 4' that is non-rotatably connected to it for connecting the screw cap 3 'to the (in FIG. 9 The design of the screw cap 3 'and the anchor ring 4' below it correspond exactly to the first embodiment from FIG. 1. Below the anchor ring 4 ', however, there is another ring 17 in this embodiment, which has a plurality of material bridges 18 is integrally connected to the anchor ring 4 '.

FIG. 10 essentially corresponds to the vertical section according to FIG. 4, so that the description of the screw cap 3 ', the anchor ring 4' and the

Cutting elements 10 'can be referenced. Underneath the anchor ring 4 ', however, the (further) ring 17 can clearly be seen, which is designed as a tamper-evident seal. For this purpose, the ring 17 has a plurality of inwardly protruding webs 19 distributed over the circumference, which when the screw cap 3 'is screwed on for the first time come into contact with corresponding locking elements 20 extending from the base element 2' and block the further rotation of the ring 17, such as will be described in more detail below.

In FIG. 11 the pouring element from FIG. 9 is shown in horizontal section along the line XI-XI from FIG. Here one can clearly see the encircling ring 17, from which a plurality of inwardly protruding webs 19, 19A and 19B extend. In order to ensure that the ring 17 does not rotate with the anchor ring 4 'when the screw cap 3' is unscrewed, the base element 2 'has a plurality of outwardly protruding locking elements 20, 20A and 20B, which with the aforementioned webs 19, 19A and 19B such interaction that the ring 17 blocks when unscrewing, so that the material bridges 18 arranged above it tear off and no longer hinder the further rotation of the anchor ring 4 '.

It is clear from FIGS. 11 and 12 that the base element 2 ′ has an outwardly protruding and essentially circumferential collar 21 on its outside, the clear inside diameter of the collar 21 being smaller than that clear distance between the oppositely arranged webs 19 of the ring 17. This reliably prevents the ring 17 from being able to move out of its lower position 17 on the base element 2 'even when the screw cap is screwed on. This ensures that the ring 17 cannot get into the environment as a "loose plastic part".

13 shows a further embodiment of a pouring element according to the invention, in which the upper side of the fastening flange 1 ″ of the pouring element is connected to the inside of a composite pack P. A corresponding composite pack P has a material recess at the location of the later pouring opening the pouring element is guided through the interior of the composite pack P, positioned in the area of the material recess and then connected to the inside of the composite pack P, for example by means of ultrasound. In this embodiment of the invention, the inside of the base element 2 ″ is closed on the pack side in the unopened state, see above that the product located in the composite pack P cannot flow into the pouring element in the unopened state.

The opening means of this pouring element comprise an opening element 22, which is arranged in the unopened state in the interior of the base element 2 ″ and cohesively connected to it, and two force transmission elements 23, which are arranged in the interior of the screw cap 3 ″ and are integrally connected to it. The power transmission elements 23 each include a radially inwardly protruding hook 24 at their downwardly directed end. Recesses 25 are provided at the corresponding points on the opening element 22, into which the hooks 24 of the power transmission elements 23 engage in the assembled state, so that a form-fitting connection arises. A radially circumferential predetermined breaking point 26 is provided in the section in which the base element 2 ″ and the opening element 22 are materially connected to one another, so that the material connection can be easily severed when the screw cap 3 ″ is screwed on. It can be clearly seen that the opening element 22 in the Compared to the outer circumferential surface of the screw cap 3 ″ protrudes downwards, so that it protrudes from the interior of the screw cap 3 ″ in the pivoted-open state.

Claims

1. Reclosable pouring element for cardboard / plastic composite packs (P), in particular beverage packs, with a base element (2, 2 ', 2 ") having a circumferential fastening flange (1, 1', 1") and an external thread (10) opening means arranged at least in the unopened state of the pouring element inside the base element (2, 2 ', 2 ") and a screw cap (3, 3', 3") with an internal thread, the opening means being designed so that when the composite pack (P ) when the screw cap (3, 3 ', 3 ") is screwed on, a pouring opening is created within the pouring element by breaking open the composite material of the pack (P) or a barrier layer located in the base element (2, 2', 2"), characterized in that underneath the screw cap (3, 3 ', 3 ") an anchor ring (4, 4', 4") connected to it in a rotationally fixed manner is arranged, which can be freely rotated radially around the base element (2, 2 ', 2 ") and in the axial direction tensile strength with the base element ent (2, 2 ', 2 ") is connected and that for secure connection of the screw cap (3, 3', 3") to the base element (2, 2 ', 2 "), the anchor ring (4, 4 ', 4 ") is articulated to the screw cap (3, 3', 3") via a hinge element (5, 5 '), the pivot axis of which is aligned tangentially to the outer circumference of the screw cap (3, 3', 3 ").

2. The pouring element according to claim 1, characterized in that the anchor ring (4, 4 ', 4 ") has a slot (6, 6') running in the circumferential direction, which the anchor ring (4, 4 ', 4") in one section in upper parts (4A, 4A ') and a lower part (4B, 4B ') separates, the upper parts (4A, 4A') and the lower part (4B, 4B ') being arranged at a distance from one another in the axial direction.

3. The pouring element according to claim 2, characterized in that the slot (6, 6 ') is arranged in the circumferential direction in the region of the hinge element (5, 5'), the hinge element (5, 5 ') in such a way with the upper parts (4A , 4A ') of the anchor ring (4, 4', 4 ") is connected so that in each case the end of the upper parts (4A, 4A ') facing the hinge element (5, 5') after the screw cap (3, 3 ') has been pivoted open , 3 ") is twisted.

4. pouring element according to claim 2 or 3, characterized in that the hinge element (5, 5 ') is arranged in the circumferential direction centrally to the slot (6, 6').

5. pouring element according to one of claims 2 to 4, characterized in that the lower end of the hinge element (5, 5 ') in the unopened state of the pouring element over the lower end of the upper parts (4A, 4A') of the anchor ring (4, 4 ', 4 ") protrudes downwards in the direction of the mounting flange (1, 1', 1").

6. pouring element according to one of claims 2 to 5, characterized in that the screw cap (3, 3 ', 3 ") in the pivoted state at an opening angle of 120 ° to 150 ° through the hinge element (5, 5') in its Open position is locked with respect to its pivoting open.

7. pouring element according to claim 6, characterized in that the screw cap (3, 3 ‘, 3") is radially freely rotatable in its locked open position.

8. The pouring element according to one of claims 1 to 7, characterized in that the hinge element (5, 5 ') is arranged with respect to its pivot axis in the unopened state above the lower third of the base element (2, 2', 2 ").

9. The pouring element according to one of claims 1 to 8, characterized in that the base element (2, 2 ', 2 ") has on its outside an outwardly protruding and essentially circumferential collar (9, 9', 9").

10. The pouring element according to claim 9, characterized in that the anchor ring (4, 4 ', 4 ") has at its lower end a substantially circumferential web (11, 11', 11") directed towards the base element, which is located below the collar (9, 9 ', 9 ") is arranged to prevent the anchor ring (4, 4', 4") from being pulled off over the collar (9, 9 ', 9 "). 11. Pouring element according to Claim 10, characterized that the collar (9, 9 ', 9 ") is arranged in the unopened state in the axial direction in the upper area of the anchor ring (4, 4', 4"), so that when the screw cap (3, 3 ', 3 ") is unscrewed a movement of the hinge element (5, 5 ') is possible in the axial direction until the web (11, 11',

11 ") comes into contact with the collar (9, 9 ', 9").

12. The pouring element according to claim 11, characterized in that the pivot axis of the hinge element (5, 5 ') with the screw cap (3, 3', 3 ") pivoted away in the axial direction in the upper half of the base element (2, 2 ', 2" ) is arranged

13. The pouring element according to claim 12, characterized in that the pivot axis of the hinge element (5, 5 ') with the screw cap (3, 3', 3 ") pivoted away in the axial direction in the upper third of the base element (2, 2 ', 2" ) is arranged.

14. The pouring element according to one of claims 9 to 13, characterized in that on the base element (2, 2 ', 2 ") below the collar (9, 9', 9") in the direction of the anchor ring (4, 4 ', 4 " ) outwardly protruding ribs (7, 7 ', 7 ") extending perpendicular to the mounting flange (1, 1', 1") are provided, which the anchor ring (4, 4 ', 4 ") with respect to the base element ( 2, 2 ', 2 ") center.

15. The pouring element according to one of claims 1 to 14, characterized in that the opening means have a cutting element (10, 10 ') arranged in the interior of the base element (2, 2', 2 ") and at least one in the interior of the screw cap (3, 3 ', 3 ") arranged and with this form-fitting or materially connected driver web (12, 12').

16. The pouring element according to claim 15, characterized in that the at least one driver web (12, 12 ') protrudes at least partially from the interior of the screw cap (3, 3', 3 ") in the pivoted-open state.

17. The pouring element according to claim 15 or 16, characterized in that the at least one driver web (12, 12 ') is attached in the circumferential direction as close as possible to the hinge element (5, 5').

18. The pouring element according to claim 15 or 16, characterized in that the at least one driver web (12, 12 ') is arranged as far away as possible from the hinge element (5, 5') in the circumferential direction

19. The pouring element according to any one of claims 15 to 18, characterized in that a plurality of driver webs (12, 12 ') which are arranged uniformly distributed over the circumference is provided.

20. The pouring element according to one of claims 1 to 19, characterized in that at least one tamper-evident seal (15) is arranged between the fastening flange (1) and the anchor ring (4) or the screw cap (3).

21. The pouring element according to one of claims 1 to 19, characterized in that a further ring (17) is arranged below the anchor ring (4 ') and is connected to the anchor ring (4') via a plurality of material bridges (18) serves as a seal of originality.

22. The pouring element according to claim 21, characterized in that the ring (17) is arranged over the circumference of the base element (2 ') by blocking webs (19) projecting inwards from the ring (17) The locking elements (20) can only be rotated to a limited extent, so that when the screw cap (3 ') is unscrewed for the first time, the material bridges (18) are torn off the anchor ring (4') and remains in its position on the base element (2 ').

23. The pouring element according to claim 21 or 22, characterized in that the base element (2 ') has an outwardly protruding and essentially circumferential collar (21) on its outside, the clear inner diameter of the collar (21) being smaller than the clear Distance between the opposing webs (19) of the ring (17).

24. The pouring element according to one of claims 1 to 14 or 21 to 23, characterized in that the fastening flange (1 ") is connected to the inside of the composite pack (P), the base element (2") in its interior in the unopened state on the package side is closed, the opening means being an opening element (22), which is arranged in the unopened state inside the base element (2 ") and cohesively connected to it, and at least one force transmission element (23), which is arranged inside the screw cap (3") and is cohesively connected to it is connected, include and wherein the opening element (22) is positively connected to the at least one force transmission element (23).

25. The pouring element according to claim 24, characterized in that the opening element (22) is no longer cohesively connected to the base element (2 ") after the pouring element has been opened for the first time.

26. The pouring element according to claim 24, characterized in that the opening element (22) protrudes at least partially from the interior of the screw cap (3 ") in the pivoted-open state.