JP2024508984A - Spout element and laminated packaging with improved opening behavior - Google Patents

Abstract

A spout element (1, 1') for a laminated package (P, P') is shown and described. The spout element (1, 1') comprises - a flange (4, 4'), a hollow cylindrical spout (5, 5') defining a central axis (Z); ), the closure (6, 6') being substantially perpendicular to the central axis (Z), the closure (6, 6') comprising: It has a central region (8, 8') and a weak zone (7, 7') extending in a ring shape around the central region (8, 8'), and the weak zone (7, 7') and the central region (8 , 8') between which a conical ring-shaped intermediate region (9, 9') is formed; - movable in the spout (5, 5'); a guided hollow cylindrical cutting element (11, 11') for cutting the weakened zone (7, 7') in order to open the spout (5, 5') and the laminated packaging; a cutting element (11, 11') having at least one incisor tooth (12, 12'); and a screw cap (2, 2'), which serves to drive the cutting element (11, 11'). Two alternative laminated packaging (P, P') for liquid food products are also described. These laminated packages (P, P') are such that the spout element according to the invention is integrated in the gable area of the laminated package. In order to enable a well-defined and smooth cutting process, at least a part of the protrusion of the incisors (12, 12') lies above the central axis (Z) of the intermediate region (9, 9'). The cutting element (11, 11') and the closure part (6, 6') are designed to rest parallel to the. [Selection diagram] Figure 3

Description

The present invention is a spout element for a laminated package, comprising:
- a body having a flange, a hollow cylindrical spout defining a central axis, and a closure formed on the spout and substantially perpendicular to the central axis, the closure defining a central region and a hollow cylindrical spout defining a central axis; a main body having a ring-shaped weakened zone extending around the region, and a conical ring-shaped intermediate region formed between the weakened zone and the central region;
- a hollow cylindrical cutting element movably guided in the spout and having at least one cutting tooth for cutting the weakened zone in order to open the spout and the laminated packaging; a cutting element;
- a resealable screw-on cap, the screw-on cap being used to drive the cutting element upon initial opening of the laminated package;
Relating to a spout element with.

Such a spout element is integrated as part of the gable of the laminate package for ease of handling during pouring and resealability of the laminate package. A spout element of this type is shown, for example, in the applicant's US Pat. The hollow cylindrical cutting element opens the body and thus the hitherto airtight packaging for the first time and thus forms a pouring opening. In this case, the screw cap allows resealing of the currently opened laminate package. A cutting element movably guided in the spout comprises a plurality of force transmission elements and is thereby driven by a corresponding force transmission element on the cap side. During the initial opening process, the cutting element approaches the closure and, after the initial contact of the two elements, the incisors of the cutting element separate the closure approximately in the area of the weakened zone. The path of movement of the cutting element corresponds to a ring-shaped zone of weakness.

The unsealing process can be divided into the following parts, for example: The approach of the cutting elements described above can also be omitted if the two elements are already in contact in the assembled state. The cutting element then moves through the closure and separates the closure along the cutting line with the incisors. This debonding process is a combination of debonding, plastic deformation, and material displacement. In this case, a uniform and controlled application of force is advantageous. As soon as a large part of the circumference has been cut off, the cutting element begins to fold the closure aside, thus opening the spout for the contents. The bending is carried out using the uncut remnant of the weakened zone as a pivot point. In this case, in the process of folding, first the incisors and then the outside of the cutting element exert a force on the closure and thus push it aside. After the spout element is completely unsealed, the closure is approximately parallel to the central axis Z along the outer wall of the threaded cutting element.

Spout elements with such closures are primarily used in, but not limited to, sterile packaging. In this case, the previously sterilized food product is packaged aseptically in a packaging material that is also sterile, in order to obtain a so-called sterile package. Apart from sterility issues, there are various laminated packagings in which spout elements according to the invention can be integrated.

In the first method, the spout element is an integral part of the laminated package. The spout element is introduced during its manufacturing process. For this purpose, a cut-out of the laminated material, which is first formed into a packaging sleeve by sealing the longitudinal seams, is usually first connected to a spout element in a so-called "form-fill-seal (FFS)" packaging machine. . In this case, these semi-shaped products, which are open on one side, are filled with the product and then sealed. The first step can be provided in a variety of ways. For example, the flange can be connected to one side of the packaging sleeve by a further plastic element that is injection molded directly on the packaging machine. It is also possible to weld or glue the flange directly to the packaging sleeve without using additional plastic elements. In this case, the flange can be designed with the same size as the opening of the packaging sleeve or, in order to save plastic, with a smaller size. If the flange is smaller, each surface of the packaging sleeve must be folded over and then placed on and welded to the flange. In this case, such a laminated package preferably has a multifaceted gable surface that corresponds to and is connected to the multifaceted flange of the spout element. In this case, the polygonal flange approximately corresponds to the pyramid stump.

In the second method, a fully sealed laminated package is first produced. In this case, a punch-out hole is present in the laminated packaging, usually in the gable area, for introducing the spout element. Insertion of the spout element is typically performed by welding the flange to at least one layer of laminate material. Alternatively, these parts can be glued together. This second type of laminated packaging is furthermore particularly characterized in that the insertion of the spout element can be carried out independently of the manufacture of the laminated packaging. Thus, the fabrication of the holes and the insertion of the spout element can take place before, during or after the manufacture of the laminated packaging itself. Both steps are preferably carried out before production, so as not to unnecessarily complicate the packaging machine itself. This arrangement of these manufacturing steps also means that the insertion of the spout element into the punched hole can most easily be done from the inside. The manufacture of such laminated packages is usually carried out on one of two types of packaging machines. In this first alternative, an endless web of sterile laminated material is formed into a tube and sealed. It is then filled with likewise sterile product, sealed and cut transversely at equal distances. The obtained "packaging pad" is then formed into a parallelepiped-shaped package along the creased folds. The sealing seam formed during transverse sealing in the gable region is commonly referred to as a gable seam. A second alternative uses blanks made of laminated material. The blank is first formed into a packaging sleeve by sealing the longitudinal seams, then formed into a package open on one side on a mandrel, then sterilized, filled and finally sealed, finally formed. In this case, the gable area can be designed in various ways. For example, as a surface parallel to the bottom (flat gable packaging) or as a surface formed at least in part at an angle to the bottom (slanted gable packaging), or both with two opposite sloped surfaces. Can be designed as a flowing roof (“gable top” package).

The exact layer structure of the laminate material varies depending on the requirements, but it consists of at least a carrier layer made of cardboard and a cover layer made of plastic. In addition, barrier layers (e.g. aluminum (Al), polyamide (PA) or ethylene vinyl alcohol copolymer (EVOH)) may be required. For this reason, such laminate packages are also referred to as cardboard/plastic laminate packages. If the spout element is integrated as part of a laminated package, it should have a gas and light barrier effect as strong as the laminated material used. At the same time, it goes without saying that cheap materials should be used that are easy to recycle together. This applies in particular to the material of the spout element used.

Unfortunately, such combinations of materials lead to relatively poor opening results. For example, when cutting off the closure in the area of the weakened zone by means of a cutting element, plastic deformation of the plastic in the weakened zone may occur without complete cutting. This leaves thread-like residual pieces. It may also happen that during rotation, the incisors of the cutting element did not properly transmit the force to the central region of the closure, so that at the end of the opening process the closure is not folded cleanly aside. If the material of the cutting element has low stiffness or hardness, the incisors often do not move in a clean circular trajectory corresponding to the zone of weakness. Therefore, controlled and reproducible opening results are less likely to occur. Furthermore, it is possible that the weakened zone is completely cut in the circumferential direction. This ensures that the laminated package is opened, but a loose closure will be present inside the package. This should be avoided in any case.

European Patent Application No. 2 627 569A

Based on the above, it is an object underlying the invention to design the spout element mentioned at the outset and explained in more detail above in such a way that, regardless of the material selection, the above-mentioned disadvantages are overcome. It is a matter of further development.

This object achieves the features of the preamble of claim 1 in that the cutting element and the closure are designed such that at least a part of the protrusion of the incisors is parallel to the central axis above the intermediate region. This is accomplished in a spout element having a spout element. This object is also achieved by two embodiment variants of a laminated packaging for liquid food products, in which a spout element according to the invention is integrated in the gable area of the laminated packaging.

This arrangement of the cutting element and the parts of the closure allows a well-defined and smooth cutting process by supporting the cutting teeth in the intermediate region. Applying a force to the intermediate region of the conical ring during the folding process of the closure ensures, on the one hand, that this process is properly initiated, but that the closure is then completely folded aside. . Thus, in other words, the cutting element and the closure are designed such that the cutting teeth strike the intermediate region and exert a force thereon upon first opening of the laminated package. This is because the cutting element moves towards the closure element (parallel to the central axis) and at the same time rotates about the central axis. This protrusion thus defines the radial position at which the cutting element hits different areas of the closure and cuts off a large portion thereof during the opening process. It has unexpectedly turned out to be advantageous if the cutting element not only hits the weakened zone but also radially inwardly in the intermediate region and cuts off the closure element there. Even if a force is applied to these two areas, the weakened zone is still the thinnest area of the closure element and is therefore preferably separated by the cutting element. However, the arrangement and formation of the body and cutting element according to the invention ensures a clean and controlled separation of the closure element. Furthermore, due to the increased leverage of the application of force from the inner wall of the spout, it is also possible to make the folding of the closure element easier at the end of the opening process.

A further teaching of the invention provides that the height of the weakened zone is less than 50% of the height of the central region measured parallel to the central axis. This ensures clean separation of the fragile zone combined with a stable central region. The central area can also be completely folded aside at the end of the opening process.

In a further advantageous embodiment, the weakened zone extends approximately orthogonally to the central axis between the inner radius and the outer radius. A body with a weakened zone designed in this way is easier to manufacture and also allows for more controlled separation and opening of thin-walled sections.

In a further design of the invention, which further enhances these effects, the difference in height between the inner and outer radii is at least twice the height of the weakened zone measured parallel to the central axis.

According to a further teaching of the invention, the inner radius of the hollow cylindrical cutting element should be at most 95% of the inner radius of the weakened zone. This dimension for the overlap of the cutting element and the intermediate region, defined by these boundary radii, makes it possible to improve the effectiveness of the cutting and folding processes described above.

In a further advantageous embodiment, the weakened zone is connected directly to the spout. This allows, on the one hand, a simplification of the production of the body. The reason for this is that the transition area between the spout and the closure can be formed more precisely. On the other hand, the force is better transmitted and absorbed by the spout during the detachment process.

In a further development of the invention, the incisors are designed such that the inner side of the end facing the weakened zone is polished. This provides a cutting edge for the incisors. This cutting edge, on the one hand, facilitates the piercing of the closure and, on the other hand, has a surface corresponding to the surface of the intermediate region of the conical ring, which is therefore arranged approximately parallel to the surface of the intermediate region of the conical ring. form. During the opening process, the cutting element moves along the central axis and at least a portion of the protrusion of the incisors along the central axis rests on the intermediate region, so that the corresponding surfaces of the incisors and the intermediate region come into contact with each other. . In this case, this ensures a better transmission of force from the cutting element to the intermediate region over a larger area.

A further teaching of the invention is that the polished portion of the incisor transitions continuously relative to and along the central axis from a chamfered inner surface to an inner surface formed parallel to the central axis. provide that. This makes it possible not only for the cutting teeth to contact the intermediate region at the beginning of the cutting process, but also to continue to apply a force to the intermediate region during the further movement of the cutting element along the central axis. Of course, this also allows the design of a lighter version of the overall cutting element without losing the above-mentioned advantages.

In a further advantageous embodiment, the incisors have ends facing the zone of weakness extending circumferentially in a plane perpendicular to the central axis. The flatness of the ends of the incisors ensures that the incisors separate the weakened zone more stably and that they are guided along the intermediate region. Due to the large part of the protrusion on the intermediate region, this cutting edge of the incisor is used for detachment if this end, which extends circumferentially in a plane perpendicular to the central axis, is placed above the intermediate region. It is also ensured that it is properly directed outward from the intermediate region until a sufficiently thin area is reached, such as the weakened zone itself.

In a further design of the invention, the cutting element is designed in such a way that it is thickened radially inwardly in the area of the incisors. By strengthening the alignment of the incisors, we ensure that the forces generated during the various stages of the opening process are absorbed without any problems. This is particularly useful because the incisors are the protrusions of the cutting element and are therefore susceptible to chipping. Adjustments to the cutting elements associated with the detachment process are typically located in the area of the incisors, as shown for example in the embodiments described above. However, it is usually sufficient that such modifications are localized in order to save as much material as possible in the remaining cutting elements. In this respect, any reinforcement of the cutting element may be considered thickening. This thickening is designed to protrude inwardly of the hollow cylinder and has, for example, up to 95% of the inner radius of the remaining hollow cylinder.

According to a further teaching of the invention, at least 30%, preferably at least 50%, of the surface of the intermediate region facing the cutting element should be covered by projections of the cutting element parallel to the central axis. Such coverage has been found to be useful to further enhance the effects of the present invention. In this case, it makes sense to use the protrusion of the entire cutting element to define this overlap, since the cutting element rotates about the central axis and thus the incisors also move along the entire intermediate region.

In a further advantageous embodiment, the cutting element has two cutting teeth. In principle, the greater the number of incisors that are formed on the cutting element, the faster the cutting element passes through the separation stage and transitions into folding. However, this is limited to cases where these incisors are reasonably regularly distributed around the circumference. On the other hand, each additional incisor increases the opening force. These incisors are of the same length and enter the obturator at the same time. This choice provides a good compromise between the required rotation of the screw cap and the force required therefor.

In a further development of the invention, the injection molding point is located on the central axis of the closure. In most cases, the individual components of the spout element are manufactured by an injection molding process. In this case, a tool with the negative shape of the part to be produced is filled with liquid plastic. The liquid plastic then solidifies, the tool is opened and the finished part is ejected. Usually, filling of liquid plastic is carried out via a single nozzle. In this case, the solidly formed plastic part is separated from the remaining plastic still in the nozzle during ejection.

Of course, this separation can also take place via the nozzle itself before ejection. In both cases, visible, usually protruding, surface undulations occur on the plastic part. This is commonly referred to as the injection point. The slower the liquid plastic fills, the more material needs to be forced through tight spots, such as weakened zones. Surprisingly, it has been found that the advantages of a central injection point and thus uniform filling of the entire body are superior, although this requires that a large proportion of the liquid plastic be transferred via the weakened zone.

In an advantageous embodiment of the invention, a laminate packaging for liquid food products is provided, in which a spout element according to the invention is integrated in the gable region of the laminate packaging. As already explained, there are various methods for producing such a laminated package. In this case, the spout element often has the primary role of sealing the opening in the gable area and has a somewhat secondary effect with respect to the dimensional stability of the laminated package.

Another advantageous embodiment of the invention relates to a laminate packaging in which the spout element according to the invention is integrated in the gable region of the laminate packaging. In this case, the gable region has a multifaceted gable surface which is connected correspondingly to the multifaceted flange of the spout element. As already explained, this combination allows the formation of a bottle-like laminated package without the need for additional components.

In the following, the invention will be explained in more detail on the basis of the drawings, which merely represent preferred exemplary embodiments. The drawings show the following figures:

1 is a perspective view of a spout element according to the invention; FIG. 1 is a plan view of a spout element according to the invention; FIG. 3 is a longitudinal section along the line III-III of the spout element according to the invention of FIG. 2; FIG. FIG. 4 is a detailed view of the longitudinal cross-sectional view of FIG. 3; 4 is a detail view of the longitudinal section of FIG. 3 during the opening process; FIG. It is a top view of a screw-type cap. FIG. 7 is a longitudinal cross-sectional view of the screw cap of FIG. 6 taken along line VII-VII. FIG. 7 is a perspective view of the screw cap of FIG. 6; 4 a perspective view from above of the cutting element according to FIG. 3; FIG. FIG. 3 is a perspective view from below of the cutting element; FIG. 3 is a cutaway perspective view of a laminated package according to the invention with an integrated spout element after initial opening and after resealing of the screw cap; 3 is a perspective view of a second exemplary embodiment of a spout element according to the invention; FIG. 13 is a plan view of the spout element according to the invention of FIG. 12; FIG. 14 is a longitudinal section along the line XIV-XIV of the spout element according to the invention of FIG. 13; FIG. 14 is a longitudinal section along the line XV-XV of the spout element according to the invention of FIG. 13; FIG. FIG. 16 is a detailed view of the longitudinal cross-sectional view of FIG. 15; FIG. 6 is a perspective view of a second exemplary embodiment screw-on cap. FIG. 3 is a perspective view of a cutting element of a second exemplary embodiment;

In order to clarify the mode of operation upon opening, two preferred embodiments of the spout element 1, 1' according to the invention are shown in the drawing. FIG. 1 shows the first spout element 1 in the closed state without the laminated packaging P and with the central axis Z. FIG. A resealable screw cap 2 is arranged on the main body 3, which is used for initial opening and resealing of the laminated package P. The body 3 is only clearly visible in FIG. In FIG. 1 only a single peripheral flange 4 of the body 3 is visible. The peripheral flange 4 is used for connection and integration with the laminated package P. In the plan view of FIG. 2, a section line III-III is also drawn.

FIG. 3 shows the spout element 1 as a whole in a longitudinal section along the section line III--III. The main body 3 further includes a hollow cylindrical spout 5 and a closure 6 formed in the spout 5. The closure 6 comprises a ring-shaped weakened zone 7 adjacent to the spout 5, a central region 8 that closes off a large part of the pouring opening, and a conical zone extending between the weakened zone 7 and the central region 8. A ring-shaped intermediate region 9 is provided. The chamfering of the intermediate region 9 smoothes the difference in thickness between the central region 8 and the weakened zone 7.

Between the screw cap 2 and the outside of the spout 5 there is a first pair of threads 10A, 10B. The thread pair 10A, 10B allows the threaded cap 2 to be screwed in and tightened. A hollow cylindrical cutting element 11 with two incisors 12 is arranged inside the body 3 . When the spout element 1 and thus the laminated package P is opened for the first time, the cutting element 11 separates the closure 6. The central axis Z is defined by both concentrically arranged hollow cylindrical spout 5 and cutting element 11 . During the opening process, the cutting element 11 rotates about the central axis Z and moves along the central axis Z. This movement is defined by the second thread pair 13A, 13B. A second pair of threads 13A, 13B is arranged between the inside of the spout 5 and the cutting element 11. In this movement, the cutting element 11 is driven over at least one force-taking element 14. The force transfer element 14 cooperates with at least one corresponding force transmission element 15 of the screw cap 2 .

The detailed views in FIGS. 4 and 5 show how the incisors 12 impinge on the weakened zone 7 and the intermediate region 9 and begin to cut this region apart. 3 and 4 show the original arrangement of each element before the first opening, and FIG. 5 shows the arrangement during the opening process. In these figures, the inner border of the projection of the incisor 12 is also shown with a projection line, so that it is particularly easy to see how the cutting element 11 and thus the incisor 12 are arranged above the intermediate region 9. .

6 to 8 substantially correspond to the views of FIGS. 1 to 3, only the screw cap 2 is shown. In this case, the half 10A of the first thread pair is particularly clearly visible in FIG. 7, and the three force transmitting elements 15 are particularly clearly visible in FIG. The screw cap 2 further comprises a strip 16 and an anchoring ring 17, which serve as a tamper-evident seal. For this purpose, the strip 16 is immediately pulled away from the rest of the screw cap 2 upon first opening and remains visibly separated in its original position. A plurality of stop elements 18 provided on the strip 16 hook onto the corresponding elements of the body 3 so that the strip 16 can stop the screw cap 2 during disconnection before the cutting element 11 compromises the integrity of the closure 6. Guarantee that it is already separated from the rest. The tethering ring 17 is also detached during the first opening process and remains on the spout 5 thereafter. The tethering ring 17 and the rest of the screw cap 2 are connected by a plurality of retaining elements. These are designed to be folded aside to enable pouring after the screw cap 2 has been unscrewed from the spout 5. The arrangement of said parts of the screw cap 2 and the corresponding elements of the spout 5 can also be seen in the detailed views of FIGS. 4 and 5.

In FIGS. 9 and 10 a single cutting element 11 is shown in two different perspective views. Two incisors 12 formed at the lower end of the cutting element 11 are clearly visible. Three force transfer elements 14 are also visible on the inner wall, and the threads 13B of the second thread pair are visible on the outer wall.

In the cutaway view of FIG. 11, the unsealed laminated package P in which the screw cap 2 has been resealed can be seen from the inside. The tabs are especially noticeable. This occurs because the closure 6 loses its tension during the cutting process before the cutting element 11 can cut a complete circle. The tabs correspond approximately to the central region 8 and the intermediate region 9, but are now only held in a single segment of the weakened zone 7 and are pushed aside by further movement of the cutting element 11. to release the dispensing opening. This segment of the frangible zone 7 holds the tab in its "folded" state in order to reliably prevent accidental tearing of the tab and complete cutting of the frangible zone 7 when the laminated package P is opened. is sufficient for The incisors 12 formed forward in the rotational direction are positioned at the end of the first opening to be at the level of the tab and to stably hold it aside.

Figures 12-18 of the drawings show a second preferred exemplary embodiment. Differences are specifically indicated in these figures. Accordingly, each of the remaining embodiments of the first exemplary embodiment also applies to the following parts. In this embodiment, the flange 4' of the body 3' is designed as a multifaceted pyramidal stump. It is particularly noteworthy that, as can be discerned in particular in FIGS. 12 to 14, the contact surface of the laminated package P' with the laminate is no longer in one plane, but is provided by the four sides of the pyramid stump. This is what is happening. With the exception of the flange 4', the basic structure of the spout element 1' is comparable to the first exemplary embodiment. Furthermore, this basic structure is a three-part spout element 1' having a body 3', a screw cap 2' and a cutting element 11'. A first pair of threads 10A', 10B' is arranged between the screw cap 2' and the outside of the spout 5' of the body 3. A second pair of threads 13A', 13B' connects the inside of the spout 5' to the cutting element 11' in order to movably position the cutting element 11'. A corresponding element is also designed for transmitting force from the screw cap 2' to the cutting element 11' during the opening process. It can be seen in FIGS. 17 and 18 that the screw cap 2' and the cutting element 11' are connected to each other by two force-taking elements 14' and two force-transmitting elements 15', respectively.

Finally, FIGS. 15 and 16 make it clear that a modification of the cutting element 11' is also possible in that the incisor teeth 12' are designed with reinforcement in their thickness, especially in the upper region. Showing. The cutting element 11' is thus thickened radially inwardly so that it projects above the intermediate region 9' in the assembled state and comes into contact with the intermediate region 9' during the opening process.

Claims (15)

A spout element (1, 1') for a laminated packaging (P, P'), comprising:
- a flange (4, 4'), a hollow cylindrical spout (5, 5') defining a central axis (Z), and a central axis (Z) formed in said spout (5, 5'); a main body (3, 3') having a closure (6, 6') substantially orthogonal to the center region (8, 8'); a weak zone (7, 7') extending in a ring shape around the region (8, 8'), and between the weak zone (7, 7') and the central region (8, 8'). a main body (3, 3') in which a conical ring-shaped intermediate region (9, 9') is formed;
- a hollow cylindrical cutting element (11, 11') movably guided in said spout (5, 5'), which separates said spout (5, 5') and the laminated packaging; a cutting element (11, 11') having at least one incisor tooth (12, 12') for cutting said weakened zone (7, 7') for opening;
- a resealable screw cap (2, 2'), which is responsible for driving the cutting element (11, 11') during the first opening of the laminated packaging; )and,
Equipped with
The cutting element (11, 11') and the A spout element characterized in that it is designed with a closure (6, 6'). characterized in that the height of said weakened zone (7, 7') is less than 50% of the height of said central region (9, 9') measured parallel to said central axis (Z), A spout element according to claim 1. Spout element according to claim 1 or 2, characterized in that the weakened zone (7, 7') extends between an inner radius and an outer radius substantially orthogonal to the central axis (Z). . characterized in that the difference between said inner radius and said outer radius is at least twice the height of said weakened zone (7, 7') measured parallel to said central axis (Z), A spout element according to claim 3. 5. According to claim 3 or 4, characterized in that the inner radius of the hollow cylindrical cutting element (11, 11') comprises at most 95% of the inner radius of the weakened zone (7, 7'). spout element. Spout element according to any of the preceding claims, characterized in that the weakened zone (7, 7') is directly connected to the spout (5, 5'). Any of claims 1 to 6, characterized in that the incisors (12, 12') are designed such that the inner side of the end facing the weakened zone (7, 7') is polished. The spout element described in paragraph 1. The polished section of the incisor (12, 12') extends from a chamfered inner surface to an inner surface parallel to the central axis (Z) relative to and parallel to the central axis (Z). Spout element according to claim 7, characterized in that it transitions continuously along. The incisors (12, 12') are characterized in that the ends facing the weakened zone (7, 7') extend circumferentially in a plane perpendicular to the central axis (Z). , spout element according to any one of claims 1 to 8. Any of claims 1 to 9, characterized in that the cutting element (11, 11') is designed in such a way that the area of the incisor teeth (12, 12') thickens radially inwardly. The spout element described in paragraph 1. at least 30%, preferably at least 50% of the surface of the intermediate region (9, 9') facing the cutting element (11, 11') is parallel to the central axis (Z); Spout element according to any one of claims 1 to 10, characterized in that it is covered by a projection 11'). Spout element according to any of the preceding claims, characterized in that the cutting element (11, 11') has two incisors (12, 12'). Spout element according to any one of the preceding claims, characterized in that the injection molding point is located on the central axis (Z) of the closure (6, 6'). Laminated packaging (P) for liquid food products, in which a spout element (1) according to any one of claims 1 to 13 is integrated in the gable region of the laminated packaging. Body (P). A laminated packaging (P') for liquid foods, wherein a spout element (1') according to any one of claims 1 to 13 is integrated in the gable region of the laminated packaging (P'). and the gable region has a plurality of polygonal gable surfaces, and the polygonal gable surfaces are connected in correspondence with the polygonal flange (4') of the spout element (1'), Package (P').

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