Resealable dispensing element for cardboard / plastic composite packaging with attached screw cap and method for mounting the screw cap

Abstract

A resealable dispensing element for a composite package (P) is shown and described, comprising: a body (3) having a flange (4) and a hollow cylindrical spout (5), the hollow cylindrical spout (5) having at least one external thread (6), an opening device movably guided in the spout (5) for opening the composite package (P), and a resealable screw cap (2) having an anchoring ring (13), wherein the screw cap (2) is used to actuate the opening device when the composite package (P) is opened for the first time, and wherein the screw cap (2) is adapted to actuate the opening device when the composite package (P) is opened for the first time. The invention relates to a screw cap (2) and an anchoring ring (13) connected to the body (3) by a plurality of breakable material bridges or at least by material anchors, wherein the body (3) on the nozzle (5) has at least one circumferential tab (10A) for securely retaining the anchoring ring (13), and wherein the anchoring ring (13) has a circumferential retaining tab (17) on its inner side, which is shaped so that it corresponds to the circumferential tab (10A), and a method for mounting the screw cap (2) for such a dispensing element (1). In order to reliably prevent tilting of the anchoring ring (13) during the installation process of the dispensing element (1), it is provided that the body (3) has a plurality of vertical guide ribs (9) which are arranged distributed over the circumference of the nozzle (5) between the external thread (6) and the circumferential web (10A) for uniformly stretching the anchoring ring (13) when applying the screw cap (2) during the installation of the dispensing element (1).

Description

Technical Field

[0001] The present invention relates to a resealable dispensing element for cardboard / plastic composite packaging, comprising:

[0002] - a body having a flange and a hollow cylindrical spout having at least one external thread,

[0003] - an opening device, which is movably guided in the spout and serves to open the composite package, and

[0004] a resealable screw cap having an anchoring ring, wherein the screw cap is used to actuate the opening device when the composite package is opened for the first time, and wherein the screw cap and the anchoring ring are connected by a plurality of breakable material bridges or at least by a material anchoring for connection to the body,

[0005] The invention relates to a method for mounting a screw cap for a dispensing element in which the body on the nozzle has at least one circumferential tab for securely holding the anchoring ring, and in which the anchoring ring has on its inner side a circumferential retaining tab which is shaped so as to correspond to the circumferential tab. Background Art

[0006] A generic resealable dispensing element is known from DE 20 202 1 103 289 U1, which is assigned to the applicant.

[0007] The dispensing element is integrated into the gable of the composite packaging for simplifying the handling during pouring and the possibility of resealing the composite packaging. Another known dispensing element is for example shown in EP 1 795 456 A1. A hollow cylindrical cutting element opens a previously airtight composite packaging for the first time, thereby forming a dispensing opening, wherein the screw cap enables the composite packaging opened at this moment to be resealed. The cutting element movably guided in the spout is provided with a force transfer element, and is driven by the corresponding force transfer element on the screw cap. During the first opening process, the cutting element approaches the area to be opened of the composite packaging, and after the first contact of the two elements, at least one cutting tooth of the cutting element separates the composite packaging in the region of the weakened zone. The path of motion of at least one cutting element advances corresponds to the weakened zone. Summary of the Invention

[0008] The opening process can be divided into several parts, for example. If the two elements are already in contact in the assembled state, the aforementioned approach of the cutting element can also be omitted. The cutting element then moves through the composite material and separates it from the cutting teeth along the cutting line. This separation process is a combination of separation, plastic deformation, and material displacement, where a uniform and controlled application of force is advantageous. Once a large part of the circumference has been separated, the cutting element begins to fold the freely cut composite material or the closure part, which is part of the main body, to the side, thereby releasing the spout for the contents. The folding-off is carried out using the remaining, undetached part of the weakened area as a pivot axis, with first the cutting teeth and then the outer side of the cutting element applying force to the closure part during the folding-off process, thereby pressing it to the side. After the dispensing element is fully opened, the composite material part or the closure part is approximately parallel to the central axis along the outer wall of the screwed-in cutting element. This reliably ensures the free pouring of the product contained in the composite packaging.

[0009] Dispensing elements with such a closure are primarily, but not exclusively, used in aseptic packaging. In this case, previously sterilized food is packaged under aseptic conditions in a similarly sterilized packaging material to produce a so-called aseptic package. Beyond the issue of sterility, there are various types of composite packaging into which the dispensing element according to the invention can be integrated.

[0010] In the first approach, the dispensing element is an integral part of the composite packaging and is introduced during its manufacture. To this end, the cutouts of the composite material, which are initially formed into a packaging sleeve by sealing the longitudinal seams, are typically first connected to the dispensing element in a so-called "form, fill, and seal" packaging machine (FFS). These semi-formed products, open on one side, are then filled with the product and subsequently sealed. This first step can be implemented in various ways: for example, the flange can be connected to one side of the packaging sleeve via another plastic element that is injection-molded directly in the packaging machine. The flange can also be welded directly to the packaging sleeve or even adhered to it without the use of an additional plastic element.

[0011] In the second approach, an initially completely sealed composite package is manufactured, wherein a punched hole is typically present in the composite package in the gable area, into which the dispensing element is introduced. The dispensing element is typically inserted by welding a flange to at least one layer of composite material. Alternatively, these parts can also be adhesively bonded. This second type of composite package is also particularly characterized in that the insertion of the dispensing element can be independent of the manufacture of the composite package. Therefore, the manufacture of the hole and the insertion of the dispensing element can each be carried out before, during, or after the manufacture of the composite package itself. Both steps are preferably performed before manufacture so as not to unnecessarily complicate the packaging machine itself. This arrangement of production steps also represents the simplest possibility for inserting the dispensing element into the punched hole from the inside.

[0012] Another type involves composite packaging with so-called overcoated holes (OCH). In this case, liquid plastic and a barrier layer are applied to one or both sides of the punched hole before folding and producing the packaging sleeve, resulting in the package being sealed airtight again in the area of ​​the hole. In this type of composite packaging, the weakened area is formed by the plastic layer, with the cut at the first opening of this type of packaging being made close to the edge of the overcoated hole.

[0013] This type of composite packaging is typically produced on one of two types of packaging machines. In the first alternative, an endless web of sterilized composite material is formed into a tube and sealed. The tube is then filled with a similarly sterilized product and sealed and cut at equal distances transversely to the tube. The resulting "packaging cushion" is then formed into a parallelepiped package along the pre-folded edges. The sealed seam formed during the transverse sealing in the gable area is commonly referred to as a gable seam. The second alternative uses a cutout of the composite material, which is first formed into a packaging sleeve by sealing the longitudinal seam and then formed into a package body open on one side on a mandrel. The package is then sterilized, filled, and finally sealed and formed.

[0014] In general, the gable area can be designed in various ways, for example as a surface parallel to the base surface (flat gable packaging), as a surface at least partially angled to the base surface (sloping gable packaging), or as a saddle top with two opposing sloping surfaces ("gable top" packaging). The gable can also be designed as a blunt cone. In this case, the flange of the distribution element is square and has sealing surfaces at the edges that extend downward in the shape of pyramidal stumps. These sealing surfaces are sealed with the packaging composite material, with four protruding ears being formed, which are folded over the gable sides and sealed there.

[0015] The precise layer structure of the composite material can vary depending on the requirements, but it consists of at least a carrier layer of cardboard and a cover layer of plastic. In addition, a barrier layer (e.g., aluminum (Al), polyamide (PA), or ethylene vinyl alcohol copolymer (EVOH)) may be necessary to ensure that the sterile product has an increased barrier effect against gases (especially oxygen) and, in the case of aluminum, against light. For this reason, such composite packaging is also referred to as cardboard / plastic composite packaging. If a dispensing element is integrated as part of the composite packaging, it should have a similarly strong barrier effect against gases and light as the composite material used. At the same time, of course, inexpensive materials that can be easily recycled should be used. This also applies in particular to the material used for the dispensing element.

[0016] Therefore, the dispensing element explained in more detail above usually consists of three separate components: the main body, the opening device, and the screw cap. Before sealing with the composite packaging, the dispensing element consisting of the separate components needs to be assembled. For this purpose, the opening device is introduced into the main body from above and inserted therein until the upper edge of the main body's spout and the upper edge of the opening device extend roughly in one plane. The opening device is screwed in or pressed in linearly. The screw cap is then pressed onto the main body from above in a predetermined orientation, with both the anchoring ring and the screw cap widening their hollow cylindrical threaded areas so that they can move on the outer thread of the hollow cylindrical spout. This process is also known as bouncing.

[0017] If the body, below the external threads, on the outer circumference of its hollow cylindrical spout has a significantly smaller diameter than the outer diameter of the external threads, the anchor ring can tilt during the pop-up process after passing over the spout's external threads. In this case, the dispensing element's screw cap can slip in front of or behind a portion of the anchor ring, wedging it into a plane that extends obliquely to the flange of the body. However, this type of dispensing element can no longer perform its function and must be ejected and disposed of as waste.

[0018] Based on this, the object of the present invention is to design and further develop the distribution element mentioned at the outset and described in more detail above in such a way that tilting of the anchoring ring is reliably eliminated during the installation process of the distribution element.

[0019] This objective is achieved with a dispensing element according to an embodiment of the present disclosure, in which the body has a plurality of vertical guide ribs, distributed around the circumference of the nozzle between the external thread and the circumferential tabs, for uniformly stretching the anchor ring when the screw cap is applied during installation of the dispensing element. According to the present invention, the anchor ring widens uniformly during installation of the screw cap, with the anchor ring being centered during installation. This expands the anchor ring simultaneously with the screw cap. The anchor ring cannot move inward. Clamping in the installation tool also prevents the anchor ring from sliding outward. This reliably eliminates any relative displacement of the anchor ring and screw cap.

[0020] According to another preferred embodiment of the invention, the overlap of the circumferential tabs and the circumferential retaining tabs relative to their respective radii is 0.5 to 0.7 mm. This dimension has been shown to ensure a reliable connection of the anchoring element to the body without unnecessarily complicating assembly. The overlap is the difference between the inner radius of the circumferential retaining tabs and the outer radius of the circumferential tabs. The outer radius is measured outside any existing recesses.

[0021] The free rotation of the anchoring ring is also achieved by the interaction of the circumferential tabs and the circumferential retaining tabs. This is not only necessary when unscrewing the screw cap, but it is also very helpful to be able to freely rotate the screw cap in its unfolded state so that the pouring flow of the product is not hindered by the screw cap.

[0022] Another embodiment of the present invention provides that the upper edges of all transverse guide surfaces of the vertical guide ribs lie on a common circular line that is as large as the outer circumference of the external thread. This reliably ensures that the anchor ring expands evenly after it has passed through the external thread of the main body's spout. Providing additional support from the inside is advantageous so that the anchor ring does not (unevenly) deflect inward during the installation process when forces are applied from above.

[0023] According to another preferred embodiment of the invention, it is provided that the transverse guide surface extends completely axially below the circle line up to the circumferential web. This allows for a smooth process during the axial installation movement.

[0024] Another preferred embodiment of the invention provides that the outer radius of the circumferential web is at most 5% greater, particularly preferably at most 4% greater, than the radius of the circular wire.

[0025] In a further embodiment of the invention, it is provided that the main body has at least six vertical guide ribs which are arranged evenly distributed over its circumference.

[0026] According to another preferred embodiment of the present invention, the main body has ten to twenty-four vertical guide ribs distributed on the circumference thereof.

[0027] According to another preferred embodiment of the present invention, a slot is provided between the anchoring ring and the cover element without material bridges, and the anchoring ring has a tether integrally connected to the cover element as a material anchor. This design reliably ensures that the screw cap does not come loose from the dispensing element and, therefore, from the composite packaging after unscrewing.

[0028] According to another embodiment of the invention, a hollow cylindrical cutting element having at least one cutting tooth is provided as the opening device. This known design has proven itself in ensuring reliable initial opening of the composite packaging when the screw cap is first screwed on. Preferably, the cutting element thus has an external thread on its outer circumference, which interacts with a corresponding internal thread in the hollow cylindrical spout of the body and enables the helical movement of the cutting tooth.

[0029] In a further preferred embodiment of the invention, provision is made for a circumferential strip to be provided below the anchoring ring, which is connected to the anchoring ring arranged above it via a plurality of breakable material bridges distributed in the circumferential direction and serves as a tamper-evident seal.

[0030] To this end, it is particularly advantageous if the circumferential strip has on its inner side a plurality of stop elements distributed over the circumference, which, when the screw cap is opened for the first time, hook into vertical locking elements correspondingly arranged on the circumference of the body, so that the material bridges break and visually indicate that opening of the composite packaging has occurred.

[0031] According to another preferred embodiment of the invention, the circumferential web of the main body has recesses distributed over its circumference, which, in the assembled state of the dispensing element, are each located above the stop elements of the tamper-evident strip. This makes it easier to install the dispensing element and reliably prevents premature breakage of the material bridge during installation.

[0032] According to another preferred configuration of the invention, the vertical locking element is arranged in the extension of the vertical guide rib. This is advantageous for manufacturing the screw cap in an injection molding tool.

[0033] The invention also relates to a method for mounting a screw cap for a dispensing element, characterized by the following steps:

[0034] - gripping the screw cap around its circumference by means of a holding device to achieve a full 360° support around the circumference,

[0035] - aligning the screw cap by rotating it relative to the body, and

[0036] - The clamped screw cap and the body are moved axially relative to each other until the end position is reached.

[0037] The retaining device preferably has a cavity into which the screw cap is axially moved and clamped prior to final assembly. In this way, the dispensing element according to the invention is mounted with optimal support, reliably eliminating any tilting of the anchor ring during installation. Damage to or displacement of the anchor ring is reliably avoided by means of a staggered process in which the screw cap is first moved into its end position and then closes the retaining device.

[0038] Finally, it is preferably provided that the screw cap is clamped from the outside only in the axial region without threads or tabs. In this way, the material of the screw cap can deviate outwards in the non-supporting region (i.e. the region with threads or tabs) while remaining supported in the remaining regions. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The invention will be explained in more detail below with reference to the accompanying drawings, which only illustrate a preferred exemplary embodiment, in which:

[0040] Figure 1 is a perspective view of a dispensing element according to the invention,

[0041] Figure 2 is based on Figure 1 A plan view of the distribution element of the present invention,

[0042] Figure 3 is a perspective view from above of the main body of the dispensing element according to the invention,

[0043] Figure 4 is a vertical cross-sectional view of a screw cap of a dispensing element according to the invention,

[0044] Figure 5A yes Figure 2 A vertical cross-section of the distribution element according to the invention along the line VA-VA at the beginning of installation;

[0045] Figure 5B yes Figure 5A Detailed view of the vertical section,

[0046] Figure 6A yes Figure 2 A vertical cross-section of the distribution element according to the invention along the line VA-VA during installation;

[0047] Figure 6B Is from Figure 6A Detailed view of the vertical section,

[0048] Figure 7A is based on Figure 2 A vertical cross-sectional view of the distribution element of the present invention along the line VA-VA after installation

[0049] Figure 7B yes Figure 7A Detailed view of a vertical section. DETAILED DESCRIPTION

[0050] A preferred exemplary embodiment of a dispensing element 1 according to the invention is shown in the drawings. Figure 1 The dispensing element 1 is shown in the closed state with a vertical axis Z without the composite package P. A resealable screw cap 2 for first opening and for resealing the composite package P is located on the body 3. Figure 1 Only one circumferential flange 4 can be seen from the main body 3, which is used for connection with a composite packaging (not shown) and for integration into the composite packaging (not shown). Figure 2 In the plan view, a section line VA-VA is also drawn.

[0051] exist Figure 1 and Figure 2 The body 3 of the dispensing element 1 according to the invention, which is hidden by the screw cap 2, is located in Figure 3It is shown separately in a perspective view from above. It basically consists of a horizontal flange 4, the outer edge of which is sealed with the edge of the package of the punched opening in the composite package, and a hollow cylindrical spout 5, as described in more detail below, the hollow cylindrical spout 5 having an external thread 6 and an internal thread 7. The internal thread 7 is used to accommodate a cutting element 8, which, however, is only Figure 5A and are also described in more detail there.

[0052] The spout 5 has a plurality of vertical guide ribs 9 arranged on its outer circumference. According to the present invention, these guide ribs are distributed along the circumference below the external thread 6. It can be seen that the depth of the vertical guide ribs 9 corresponds approximately to the depth of the external thread 6. The upper edges of all the transverse guide surfaces of the vertical guide ribs 9 lie on a common circular line CL, ensuring uniform widening and centering of the screw cap 2 during the springing process after passing over the external thread 6 of the spout 5 during the installation process. In addition to the vertical guide ribs 9, circumferential webs 10A can be found in the region of these ribs. These webs are not rotationally symmetrical, but rather have recesses in some areas (not described in greater detail). Parallel to and below these circumferential webs 10A, web sections 10B can also be seen, which have the same outer contour as the circumferential webs 10A.

[0053] Below the vertical guide rib 9 and in its extension and below the tab section 10B a plurality of vertical tabs can be seen which serve as locking elements 11. Figure 4 The function of these locking elements 11 is described in more detail further in the description of FIG. In the exemplary embodiment shown and in this respect preferred, the screw cap 2 has, in addition to the actual cap element 12, a lower anchoring ring 13 and, in turn, a circumferential strip 14 arranged underneath, which is Figure 1 It is also clearly visible from the outside in the perspective view.

[0054] In the exemplary embodiment shown and preferred in this respect, the cover element 12 is connected to the anchoring ring 13 via a one-piece tether T (i.e., a "holding strap"). To this end, the screw cap 2 is provided with at least one slot S through a circumferential slit blade. In the exemplary embodiment shown and preferred in this respect, there are two slots S, as shown in FIG. Figure 1 To produce them, two cuts are made in parallel planes. As a result, the screw cap 2 is connected via a tether T, wherein the two tether arms are integrally connected to the anchoring ring 13. However, in Figure 1In the embodiment shown, only the front "end" of the tether T is visible. However, if only one attachment via a single end of the tethering strip to the anchoring ring is desired, it is also possible to provide only a single slot. In this case, this single slot extends at least partially in a spiral shape over the circumference, so that the two ends of the slot are at different heights relative to the vertical axis Z.

[0055] Figure 4 A vertical section through a screw cap 2 of a dispensing element 1 according to the invention is shown, wherein the cap element 12, the anchoring ring 13 and the circumferential strip 14 of the screw cap 2 are clearly recognizable. The two force transmission elements 15 extending downwards from the straight area of ​​the cap element 12 are also particularly clearly visible here. Furthermore, an internal thread 16 can be identified in the cap element 12, which corresponds to the external thread 6 of the spout 5 of the body 3. In addition, Figure 4 The anchoring ring 13 is shown to have, in its lower region, circumferential retaining tabs 17. This is described in more detail below.

[0056] at last, Figure 4 It is clearly shown that the circumferential strip 14 serving as a tamper-evident seal has on its inner side a plurality of stop elements 18 distributed over the circumference, the arrangement of these stop elements being selected in such a way that in the assembled state of the dispensing element 1 according to the invention they are located in the region of the locking elements 11 and below the tabs 10 of the body 3 and engage with the locking elements 11 when the screw cap 2 is opened for the first time, thereby reliably preventing a rotation of the circumferential strip 14. The locking elements 11 are arranged so that they, as in Figure 3 As can be clearly seen in the figure, the anchoring ring 13 and the circumferential strip 14 are located below the recesses of the circumferential tab 10A and the tab section 10B. The anchoring ring 13 and the circumferential strip 14 are connected to each other as a single piece via small material bridges (not shown). During the first opening process, these material bridges break due to the blocking of the circumferential strip 14, thereby signaling to the consumer that the dispensing element 1 has been opened. A tamper-evident seal formed in this way is also referred to as a "tamper-evident element."

[0057] Other Figures 5A to 7B For the purpose of clarifying the order of installation of the distribution element 1. Therefore, Figure 5A First, the beginning of the installation is shown, with the screw cap 2 just being placed on it. Figure 6A Another intermediate position of the screw cap 2 is shown, Figure 7A The fully assembled dispensing element is shown sealed in the opening of the composite package P.

[0058] Figure 5A Shown along Figure 2The entire dispensing element 1 is shown in a vertical section along the section line VA-VA. The body 3, which is sealed with the flange 4 at the peripheral edge of the opening in the composite package P, also has a closure portion 19 formed in the spout 5. The closure portion 19 has a central region 20 that closes most of the dispensing opening, an annular weakened area 21 connected to the spout 5, and a conical annular intermediate region 22 extending between the annular weakened area 21 and the central region 20. The chamfer of the conical annular intermediate region 22 compensates for the difference in thickness between the central region 20 and the annular weakened area 21.

[0059] From Figure 5A The area in the dotted circle VB is Figure 5B It is shown enlarged in the figure. Figure 5A , at the beginning of the installation of the dispensing element 1 (springing process), the position of the screw cap 2 is shown with reference to the body 3 and the opening device inserted therein, which in the illustrated and in this respect preferred exemplary embodiment is designed as a cutting element 8. The internal thread 16 of the cap element 12 is still arranged above the body 3 and the cutting element 8. However, it can be seen that the circumferential retaining tabs 17 of the anchoring ring 13 have already partially passed the external thread 6 of the spout 5, and Figure 5B The enlarged view in FIG clearly shows that the inner diameter of the circumferential retaining tab 17 is smaller than the outer diameter of the external thread 6. However, due to the plastic material used, a temporary deformation of the two elements is possible, wherein the circumferential retaining tab 17 is widened. However, due to the recess present in the circumferential tab 10A, this expansion occurs unevenly over the circumference of the circumferential retaining tab 17.

[0060] exist Figure 6A and Figure 6B FIG shows another "snapshot" of the installation process of the dispensing element 1 according to the invention, wherein the internal thread 16 of the cover element 12 is already in contact with the external thread 6 of the spout 5. The anchoring ring 13 has passed through the external thread 6 with its circumferential retaining tabs 17 and is Figure 6B It can be clearly seen in FIG that the rounded geometry of the vertical guide ribs 9 in the upper region ensures that the circumferential retaining tabs 17 widen uniformly in the region of the vertical guide faces of the vertical guide ribs 9. In this way, tilting of the anchoring ring 13 during the springing process is reliably prevented. It can also be seen that the retaining elements 18 of the circumferential strips 14 have already passed through the circumferential tabs 10A. However, the circumferential strips 14 do not have to widen uniformly like the circumferential retaining tabs 17 of the anchoring ring 13, but only in the short section in which the retaining elements 18 are located (see FIG. Figure 4 ). In addition, the recesses on the circumferential webs 10A and web sections 10B mentioned above (see Figure 3 ) ensures that this expansion is kept as small as possible, since the locking element 18 is positioned accordingly.

[0061] at last, Figure 7A and 7B The dispensing element 1 according to the present invention is shown in its fully assembled position. Between the outside of the screw cap 2 and the spout 5, there is a first thread pair (external thread 6 and internal thread 16), which enables the screw cap 2 to be screwed on and tightened. A hollow cylindrical cutting element 8 with cutting teeth 23 is arranged inside the body 3. When the dispensing element 1 and therefore the composite package P are opened for the first time, this hollow cylindrical cutting element 8 separates the closure 19 by destroying a local section of the annular weakened area 21. A vertical axis (not shown here) is defined by the concentrically arranged hollow cylindrical elements of the spout 5 and the cutting element 8. The cutting element 8 rotates around the vertical axis and moves along this axis during the opening process. This movement is defined by the second thread pair (internal thread 7 and external thread 25), which is located between the inside of the spout 5 and the cutting element 8. During this movement, the cutting element 8 is driven by at least one force transmission element 24, which interacts with at least one corresponding force transmission element 15 of the screw cap 2.

[0062] Reference Signs List

[0063] 1 distribution element

[0064] 2 screw caps

[0065] 3 main body

[0066] 4 flanges

[0067] 5 nozzles

[0068] 6 external thread

[0069] 7 internal thread

[0070] 8 cutting elements

[0071] 9 vertical guide ribs

[0072] 10A circumferential splice

[0073] 10B splice section

[0074] 11 locking elements

[0075] 12 cover elements

[0076] 13 anchor ring

[0077] 14 circumferential strips (tamper evident seal)

[0078] 15 force transmission elements

[0079] 16 internal thread

[0080] 17 Circumferential retaining tabs

[0081] 18 stop element

[0082] 19 closed part

[0083] 20 Central Area

[0084] 21 Annular Weakened Zone

[0085] 22 Conical ring middle area

[0086] 23 cutting teeth

[0087] 24 force transmission elements

[0088] 25 external thread

[0089] Z vertical axis

[0090] CL round wire

[0091] P composite packaging

[0092] S-slot

[0093] T-tether

Claims

1. A resealable dispensing element (1) for a composite package (P) comprising - a body (3) having a flange (4) and a hollow cylindrical spout (5) having at least one external thread (6), - an opening device, movably guided in said spout (5), for opening said composite package (P), and - a resealable screw cap (2) having an anchoring ring (13), wherein When the composite package (P) is opened for the first time, the screw cap (2) is used to actuate the opening device, and wherein the screw cap (2) and the anchoring ring (13) are connected via a plurality of breakable material bridges or at least via material anchors for connection to the body (3), wherein the body (3) on the spout (5) has at least one circumferential tab (10A) for securely retaining the anchor ring (13), and wherein the anchor ring (13) has a circumferential retaining tab (17) on its inner side, the circumferential retaining tab (17) being shaped such that the circumferential retaining tab (17) corresponds to the circumferential tab (10A); It is characterized in that The body (3) has a plurality of vertical guide ribs (9) which are distributed over the circumference of the spout (5) and arranged between the external thread (6) and the circumferential web (10A) for uniformly stretching the anchoring ring (13) when the screw cap (2) is applied during installation of the dispensing element (1).

2. The dispensing element according to claim 1, It is characterized in that The overlap of the circumferential web (10A) and the circumferential retaining web (17) is 0.5 to 0.7 mm relative to the respective radius.

3. Dispensing element according to claim 1 or 2, It is characterized in that The upper edges of all transverse guide surfaces of the vertical guide ribs (9) lie on a common circular line (CL) which is as large as the outer circumference of the external thread (6).

4. Dispensing element according to claim 3, It is characterized in that The transverse guide surface extends completely axially below the circle line (CL) up to the circumferential web (10A).

5. The dispensing element according to claim 3, It is characterized in that The outer radius of the circumferential web (10A) is at most 5% greater than the radius of the circular line (CL).

6. Dispensing element according to claim 5, It is characterized in that The outer radius of the circumferential web (10A) is at most 4% greater than the radius of the circular line (CL).

7. The dispensing element according to claim 1, It is characterized in that The main body (3) has at least six vertical guide ribs (9) evenly distributed on its circumference.

8. Dispensing element according to claim 7, It is characterized in that The main body (3) has ten to twenty-four vertical guide ribs (9) distributed on its circumference.

9. The dispensing element according to claim 1, It is characterized in that A slot without material bridges is provided between the anchoring ring (13) and the cover element (12), and the anchoring ring (13) has a tether (T) integrally connected to the cover element (12) as a material anchor.

10. The dispensing element according to claim 1, It is characterized in that A circumferential strip (14) is provided below the anchoring ring (13), which is connected to the anchoring ring (13) arranged above it via a plurality of breakable material bridges distributed in the circumferential direction and serves as a tamper-evident seal.

11. Dispensing element according to claim 10, It is characterized in that The circumferential strip (14) has on its inner side a plurality of stop elements (18) distributed over the circumference, which, when the screw cap (2) is opened for the first time, hook into vertical locking elements (11) correspondingly arranged on the circumference of the body (3), causing the material bridge to break and visually indicating that the opening of the composite package (P) has occurred.

12. Dispensing element according to claim 11, It is characterized in that The circumferential web (10A) has recesses distributed over its circumference, which in each case are above the stop element (18) in the assembled state of the distribution element (1).

13. Dispensing element according to claim 11 or 12, It is characterized in that The vertical locking element (11) is arranged in the extension of the vertical guide rib (9).

14. Method for mounting a screw cap (2) for a dispensing element (1) according to any one of claims 1 to 13, It is characterized by the following steps: - gripping the screw cap around its circumference by means of a holding device to achieve a full 360° support around the circumference, - aligning the screw cap by rotating it relative to the body, and - The clamped screw cap and the body are moved axially relative to each other until an end position is reached.

15. The method according to claim 14, It is characterized in that The holding device has a cavity and is characterized in that the screw cap is axially moved into the cavity before final assembly and is clamped after reaching the end position.

16. The method according to claim 15, It is characterized in that The screw cap is clamped from the outside only in an axial region without threads or webs.

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