Method and device for producing a packaging tube closure

Abstract

The present invention relates to a method for producing a packaging tube closure, a packaging tube closure produced by means of the aforementioned method, a method for producing a packaging tube, a packaging tube produced by means of the aforementioned method, and a device for carrying out the aforementioned methods.

Description

[0001] PSY-P-04662-WP2 - 1 - 02 / 23 / 2026

[0002] Packaging tubes provide I uss

[0003] The present invention relates to a method for manufacturing a packaging tube closure, a packaging tube closure manufactured by the aforementioned method, a method for manufacturing a packaging tube, a packaging tube manufactured by the aforementioned method, and a device for carrying out the aforementioned methods.

[0004] Packaging closures for tubes, or tube closures, are known in the prior art in various designs and regularly comprise a cap element with an outlet opening and a shoulder area. The known packaging closures are typically manufactured using injection molding or compression molding processes and then attached to a tube body to form a packaging tube.

[0005] When manufacturing packaging tube closures using compression molding, it is regularly necessary to move the forming tool or at least a part of the forming tool. During such movement, the inertia of the material dose applied to the mold, from which the packaging tube closure is formed, can cause the material dose to detach from the mold and even fall off.

[0006] Furthermore, to form the outlet opening in the cap element, it is common to use movable slides or pins within a forming tool.

[0007] Elements, often referred to as orifice pins or punches, are provided. These elements protrude, at least partially, into a cavity formed in the mold during the forming process to create the opening geometry, and can be moved back relative to the mold during or after the forming process.

[0008] US Patent 2010 / 0084788 A1, for example, discloses a device for the compression molding process of a container with an attached lid, in which an axially movable first orifice pin is provided in a first mold part of the molding tool to form a lid outlet. In its closed position, the pin projects into a cavity and forms the outlet opening in the lid area during the molding process, being moved back in a controlled manner by the relative movement of tool components during material compression. Additionally, a second pin is provided in the first mold part, arranged parallel to the first pin, which is designed for the targeted distribution of material within the lid to be formed and selectively projects into an accumulation chamber that serves to receive and redistribute material during the molding process.

[0009] EP 1 661 683 B1 discloses a method and a device for compression molding of thermoplastic materials, in which a portion of material to be compressed is first loosely placed on an extendable carrier or holder. The carrier positions the plastic portion within the molding tool such that, before the actual pressing process begins, the material initially has no contact with the surface of the mold cavity or is arranged at a predetermined distance from the cavity surface. Only during the closing or pressing process is the carrier moved relative to the mold elements, so that the material portion is introduced into the cavity in a controlled manner. PSY-P-04662-WP2 - 3 - 23.02.2026

[0010] It is then pressed together, thus avoiding unwanted premature contact with the surfaces of the cavity.

[0011] DE 4009661 C1 relates to a device for manufacturing tubes, in which a plastic blank is successively pressed into a tube head by means of interacting mandrels and dies and simultaneously joined to a tube body. For this purpose, several tool components movable relative to each other are used, which enable targeted forming of the material along successive processing stations. The device has a spring-loaded pin in the form of a punch that is axially movable in a die. During the pressing process, this pin projects into the forming area, displaces material there, and forms or maintains a central opening in the tube head.

[0012] WO 2021 / 111268 A1 concerns a device for compression molding of plastic parts, in which a portion of material is first positioned on a base area of ​​one mold half and then pressed between two mold halves. Laterally movable limiting elements are provided for controlled positioning of the material portion; these elements enclose the material portion laterally before the pressing process and are moved into a retracted position during the molding process.

[0013] EP 0 730 520 B1 relates to a device for manufacturing screw caps using a pressing process. In this process, a portion of plastic is placed in a mold and compressed by mold elements moving relative to each other. A multi-part tool with a centrally located punch and cooperating mold components is used. PSY-P-04662-WP2 -4 - 23.02.2026

[0014] Based on the prior art, the present invention aims to provide an improved method for manufacturing a packaging tube closure, which in particular enables optimized production of a packaging closure with regard to process control. Furthermore, the present invention aims to provide a packaging tube closure manufactured using the aforementioned method, a method for manufacturing a packaging tube, a packaging tube manufactured using the aforementioned method, and a device for carrying out the aforementioned methods.

[0015] This problem is solved by the subject matter of the independent claims. The dependent claims further describe advantageous embodiments of the invention. Advantageous embodiments are the subject of the following description, the description of the figures, the figures themselves, and the dependent claims. To avoid or minimize unnecessary repetition, all features disclosed below with respect to the method shall also be deemed disclosed and claimable with respect to the product and the apparatus, and vice versa.

[0016] In a first aspect, the invention relates to a method for manufacturing a packaging tube closure, preferably comprising or consisting of a cap element with a shoulder area and a lid element movable thereto via a hinge, which are further preferably formed in one piece, comprising the following steps:

[0017] (a) Providing a forming tool for a compression molding process, comprising a first mold part and a second mold part, wherein the first mold part has at least one recess on a first side with a retaining element arranged therein for a PSY-P-04662-WP2 - 5 - 23.02.2026

[0018] The material dose to be introduced into the forming tool comprises a material that is movably arranged between a retracted position and an extended position;

[0019] (b) Moving, in particular extending, the retaining element into the extended position;

[0020] (c) Applying and / or introducing a dose of material onto the first side of the first molded part;

[0021] (d) Moving, in particular retracting, the retaining element into the retracted position;

[0022] (e) Forming the packaging tube closure by bringing the second molded part close to the first molded part in such a way that the dose of material is distributed in a cavity formed between the molded parts; and

[0023] (f) Solidifying and preferably subsequent removal of the formed packaging tube.

[0024] The core idea of ​​the invention is therefore to use a first molded part that includes at least one recess with a retaining element movably arranged therein for a dose of material to be introduced into the forming tool. By appropriately moving the retaining element between the retracted and extended positions, it is thus possible to secure the dose of material inserted or applied to the first molded part and, in particular, to prevent the material dose from detaching from the first molded part due to its inertia during a movement of the first molded part, especially a lateral or rotational movement. At the same time, because the retaining element is moved into the retracted position before the forming of the packaging closure in step (e), it has no influence on the appearance of the manufactured packaging closure. PSY-P-04662-WP2 - 6 - 23.02.2026

[0025] While devices known from the prior art are designed to either freely deposit the material portion onto a molded part surface or to only subordinately influence it through shaping elements such as orifice pins, the holding element according to the invention enables not only a positionally secure retention of the material portion but also optimized shaping of the packaging tube closure. In particular, the insertion of the holding element according to the invention, as described in step d), prior to the forming of the packaging tube closure as described in step e), allows for the targeted release of the previously stabilized material dose immediately before the compression molding process. The insertion according to step d) is advantageously active, i.e., by an associated drive, comprising, for example, a single- or double-acting cylinder.This ensures that the material can distribute itself evenly within the cavity when the mold is closed, thereby reducing local material accumulations or uneven wall thicknesses.

[0026] At the same time, the retaining element according to the invention allows for the secure and reproducible positioning of the material dose at a freely selectable location within the cavity. This is in clear contrast to known orifice pins, whose position is determined by the design and the location of the outlet opening of the packaging tube closure. Orifice pins therefore cannot be arranged in a position that is optimal for material distribution, especially since the outlet opening of packaging tube closures is often located laterally and thus outside the center of the cavity. The retaining element according to the invention, on the other hand, decouples the positioning of the material dose from functional component geometries, thereby enabling a reliable, uniform material distribution and improved component quality. In particular, it prevents the material dose from being dispensed in a way that is not optimal for material distribution.

[0027] during the molding process, the material is displaced asymmetrically, resulting in air inclusions or bubbles in the molded part, which could otherwise impair the mechanical strength and / or optical quality of the packaging tube closure.

[0028] The term "first side of the first molded part" refers in particular to a surface or inner wall of the first molded part.

[0029] In the present context, the application and / or introduction of the material dose onto the first side of the first molded part according to step (c) is understood in particular to mean that the material dose is placed directly onto a surface or inner wall, preferably on a bottom surface, of the cavity formed between the molded parts. The material dose rests directly against the corresponding tool surface, so that there is no gap between the material dose and the surface of the first molded part. In particular, step (c) therefore does not include a spaced positioning of the material dose within the cavity, such as a free-floating or centered distribution, but rather a direct placement on the surface of the first molded part that defines the cavity.

[0030] The term "extended position of the retaining element" advantageously refers to a position in which the retaining element projects at least partially into the cavity. The retaining element is advantageously arranged such that it does not completely penetrate the cavity and, in particular, does not extend to or come into contact with an opposing surface of the second molded part that defines the cavity.

[0031] The retaining element according to the invention is advantageously designed to hold a dose of material applied to the first molded part during a movement. PSY-P-04662-WP2 - 8 - 23.02.2026

[0032] The retaining element is intended to hold and / or secure at least sections of the first molded part, thus preventing the material dose from detaching, slipping, or falling, particularly due to inertial forces. Advantageously, the retaining element serves only to temporarily position or fix the material dose during movement of the first molded part and not, in particular, to form an outlet opening or any other functional passage geometry in the packaging tube closure being manufactured.

[0033] Advantageously, the retaining element is designed in such a way that it is not in contact with an opposing element that limits the cavity, in particular with the opposing second molded part or an opposing cavity surface, either in the extended position or in the retracted position.

[0034] The first molded part is preferably designed to be movable relative to the second molded part in a plane perpendicular to an approach direction. The approach direction corresponds to an axial movement direction of the first and second molded parts for forming the cavity. The first molded part is particularly preferably arranged on a rotary table, which may have a plurality of first molded parts. The second molded part can more preferably be arranged in a stationary position.

[0035] In a preferred embodiment, the first molded part is free of an orifice pin arranged therein, which is designed to form an outlet opening in the packaging tube closure to be formed. More preferably, the first molded part is free, besides the retaining element, of any other movable components arranged therein, in particular movable slide elements and / or pins. PSY-P-04662-WP2 - 9 - 23.02.2026

[0036] In a further preferred embodiment, the second molding part comprises an orifice pin movably mounted therein, which is designed to form an outlet opening in the packaging tube closure to be molded.

[0037] Preferably, the retaining element is arranged centrally within the cavity and / or centrally within the first molded part. A central arrangement means, in particular, that the retaining element is positioned essentially centrally with respect to the geometric dimensions of the cavity. This allows the material dose to be held in a particularly favorable starting position for the subsequent shaping process, enabling the material to distribute evenly within the cavity when the molded parts are brought into position.

[0038] In a preferred embodiment, the retaining element comprises a pin extending in an axial direction of the recess, with a flat end face that continues a contour, particularly an inner contour, of the first molded part. The retaining element is further advantageously designed as a substantially cylindrical retaining element, particularly as a cylindrical pin, which has a preferably circular contour in axial view. Alternatively, the retaining element can, for example, have a triangular, square, polygonal, oval, or elliptical contour in axial view.

[0039] The recess in the first molded part is preferably designed to correspond to an outer contour of the retaining element. In particular, it preferably has an inner contour in axial view that corresponds to the outer contour of the retaining element movably arranged therein. In a preferred embodiment, the recess is a cylindrical or, in plan view, circular recess extending in the axial direction. The recess penetrates the PSY-P-04662-WP2 - 10 - 23.02.2026

[0040] The shaped part is preferably not completely recessed in the axial direction. Furthermore, it is advantageous if the recess is designed as an axially limited opening or bore, for example in the form of a blind hole.

[0041] In the retracted position, the retaining element is, for example, completely within the recess, i.e., entirely surrounded by the first molded part. In the extended position, the retaining element preferably protrudes at least partially from the recess. In particular, in this position, the retaining element preferably protrudes into the cavity that forms between the molded parts for forming the packaging tube closure. Thus, in its extended position, the retaining element can encompass an area that is not surrounded by the first molded part.

[0042] The retaining element is preferably designed to provide, in the extended position, a lateral support and / or a stop for the material dose to be arranged or already arranged on the first molded part. In particular, the retaining element forms a stop or support to at least partially restrict movement of the material dose in the transverse direction, i.e., perpendicular to the axial direction of the retaining element.

[0043] In a preferred embodiment, the retaining element is designed such that, in the extended position, a side or circumferential surface of the retaining element is adjacent to and / or abutting an inner and / or outer contour of the material dose, advantageously in such a way that lateral movement of the material dose, particularly due to movement of the first molded part, is limited or prevented. Lateral movement is understood to mean possible movement in a lateral direction, i.e., in a transverse direction orthogonal to an axial direction.

[0044] of the retaining element or the recess. A lateral movement of the molded part can in particular include a lateral or rotational movement of the molded part, for example a pivoting or a rotation about an axis of rotation, especially after the application of the material dose in step (c).

[0045] In a preferred embodiment, in step (d), the retaining element is moved towards the bottom of the recess until an end face of the retaining element is aligned in the transverse direction, i.e., in a direction orthogonal to an axial longitudinal axis of the retaining element, with a region of the first side of the first molded part adjacent to the retaining element, preferably with a contour or inner contour of the first molded part. Thus, in the retracted position, a surface or top surface of the retaining element can be arranged in the same plane as a region of the first side of the first molded part adjacent to the retaining element. This advantageously ensures that the retaining element has no influence on the shape of the packaging tube closure. It is also conceivable that the surface or top surface of the retaining element, preferably in the retracted position, is arranged below the aforementioned plane.In an exemplary embodiment, in step (d) the retaining element is moved until it comes to rest against a stop provided in the recess. The stop preferably prevents further movement of the retaining element in the second direction, i.e., towards the bottom of the recess, when the retaining element rests against the stop, and thus forms a stop element for the retaining element.

[0046] Moving the holding element in step (b) and / or in step (d) can advantageously be accomplished by means of a drive comprising, for example, a single-acting or double-acting cylinder. The single-acting cylinder can incorporate an additional spring element as PSY-P-04662-WP2 - 12 - 23.02.2026

[0047] The retaining element includes a return spring. After removal of the formed packaging tube closure in step (f), the retaining element is then preferably automatically returned to the extended position by means of the spring. The extension of the retaining element to the extended position in step (b) can therefore be carried out automatically by means of the return force of the spring.

[0048] In an exemplary embodiment, the retaining element is moved linearly in step (b) in a first direction, which preferably corresponds to a longitudinal direction of the retaining element, preferably by means of a drive. In step (d), the retaining element is moved linearly, for example, in a second direction opposite to the first, preferably by means of the drive. Otherwise, movement of the pin is preferably excluded. In other words, the retaining element is preferably designed to be moved only in a linear motion, in particular along the axial longitudinal direction of the retaining element, within the recess.

[0049] In a preferred embodiment, in step (c) the material dose is applied to and / or introduced into the first molded part such that the material dose includes a hole or free space in the area of ​​the retaining element and / or has a notch. The retaining element is preferably substantially ring-shaped or donut-shaped.

[0050] Preferably, a region defining the hole and / or the indentation, in particular an inner contour of the material dose, is arranged adjacent to a circumferential surface of the retaining element and / or at least partially, preferably completely, surrounds it. The retaining element, which extends through the hole or through the free space in the extended position, preferably forms a stop for the PSY-P-04662-WP2 - 13 - 23.02.2026

[0051] Material dose, which in particular protects it against movement in the transverse direction.

[0052] A portion of the material dose defining the hole and / or indentation can at least partially abut the retaining element. The material dose can thus be applied to and / or introduced into the first molded part in such a way that it at least partially, and preferably completely, encloses the retaining element circumferentially. The hole and / or indentation of the material dose can be located centrally or non-centrally with respect to the surrounding material. This means that the material dose need not be a ring, but can also form a different shape and / or vary around its circumference. Advantageously, the applied material dose can comprise a plasticized polymer, a pulp, a reactive mixture, a self-polymerizing and / or self-crosslinking system.In a preferred embodiment, in step (c) the thickness of the resulting packaging tube closure is varied in an axial direction by varying the volume of the applied and / or introduced material dose. The axial direction can correspond to the first direction in which the retaining element is moved in step (b).

[0053] In an exemplary embodiment, in step (e) the material dose is distributed such that the hole is closed and / or the indentation is removed, in particular smoothed. The provision of the hole and / or the indentation therefore has no effect on the shape of the manufactured packaging tube closure.

[0054] In a preferred embodiment, in step (c) the material dose is applied to / into the first molded part (B) such that the material dose has a lateral contact surface or circumferential surface. PSY-P-04662-WP2 - 14 - 23.02.2026

[0055] The retaining element has a geometry, particularly an outer contour, that at least partially corresponds to the retaining element. The retaining element preferably comprises a lateral and more preferably concave recess or contact surface in which, more preferably, at least a portion of the material dose is or can be arranged. In other words, the retaining element can advantageously be crescent-shaped in the broadest sense. The material dose can thus be applied to and / or introduced into the first molded part in such a way that it rests against the retaining element in the area of ​​the lateral recess or is arranged laterally adjacent to it. Preferably, the lateral recess extends over the entire longitudinal extent of the retaining element or is provided in an upper region of the retaining element, which, in particular, protrudes from the recess in the extended position.The retaining element preferably forms a lateral support for the material dose, which in particular secures it against movement in the transverse direction.

[0056] In an advantageous embodiment, the method preferably comprises, after the application of the material dose in step (c), and more preferably between steps (c) and (d), the step of moving or rotating the first molded part, in particular by means of a rotary device, together with the material dose about an axis of rotation. Here, the distance of the holding element to the axis of rotation is preferably greater than the distance of the material dose to the axis of rotation. In other words, in an advantageous donut-shaped material dose, one side of the material dose is arranged closer to the axis of rotation than the holding element located within the material dose.In an advantageous retaining element, in particular one designed with a concave shape, which is arranged adjacent to the material dose, the retaining element is arranged behind the material dose with respect to the axis of rotation, such that it prevents an escape inertial movement of the PSY-P-04662-WP2 - 15 - 23.02.2026.

[0057] Material dosage is prevented. The molded part can, for example, be moved or pivoted from a first application position, in which the material dose is applied to the first molded part, to a second molding position, in which the first molded part is arranged axially opposite the second molded part. Typical accelerations in this process can be on the order of up to 100 m / (s²). 2) lie, whereby both tangential and radial forces can occur. The dose of material applied to the first molded part is secured against lateral movement and, in particular, against falling off the first molded part by the retaining element provided according to the invention.

[0058] In a preferred embodiment, the first molded part comprises at least two recesses, and more preferably a plurality of recesses, each with a retaining element movably arranged therein, as described above. Advantageously, the material dose can be applied to and / or introduced into the first molded part in step (c) such that the material dose is arranged between the retaining elements. It is further advantageous if at least one of the retaining elements is located further away from the axis of rotation of the rotary device than the material dose.

[0059] In a preferred embodiment, in step (e) the packaging tube closure is formed by bringing the second molded part close to the first molded part such that a cap element, a hinge and a lid element are formed, preferably in one piece or integrally from the applied and / or introduced dose of material.

[0060] Advantageously, the solidification of the packaging tube closure in step (f) can include cooling the heated material, drying a portion of pulp material, crosslinking a reactive mass, and / or polymerizing a reactive mass. PSY-P-04662-WP2 - 16 - 23.02.2026

[0061] In a preferred embodiment, in step (f) to remove the formed packaging tube closure, it is pulled from the first molded part by means of a gripper, preferably with the simultaneous assistance of blowing air through an air channel located in the holding element and / or moving the holding element into the extended position such that the packaging tube closure detaches from the first molded part.

[0062] The retaining element can be or comprise a telescopic tube having an outer tube and an inner tube movable relative to the outer tube. For example, in step (f), the inner tube is moved from a retracted position, in which the inner tube is completely enclosed within the outer tube, to an extended position, in which the inner tube protrudes from the outer tube, preferably in the direction of the packaging tube closure. In an exemplary embodiment, the inner tube comprises the air duct, with air preferably being blown through the air duct when the inner tube is in the extended position.

[0063] In a preferred embodiment, the first molded part is preferably designed as a single, continuous component in which only the at least one recess with the movable retaining element is arranged. The second molded part preferably comprises at least one continuous component, and more advantageously at least two or more components. In step e), the packaging tube closure is formed by creating the cavity between the first, essentially one-piece or continuous molded part and the second, preferably multi-part, molded part. PSY-P-04662-WP2 - 17 - 23.02.2026

[0064] In another aspect, the invention relates to a packaging tube closure that can be produced using the method described above.

[0065] Advantageously, the packaging tube closure comprises a cap element, preferably with a shoulder area, and a lid element that is hinged and integrally formed with it. A material web forming the hinge preferably extends substantially in one plane and / or in a direction of extension that runs and / or is arranged in an axial direction of the packaging tube closure.

[0066] In a further aspect, the invention relates to a method for manufacturing a packaging tube with a packaging tube closure, preferably comprising the process steps of the method for manufacturing a packaging tube closure described above, as well as providing a tube body for connection with the packaging tube closure, preferably such that at least a section of the tube body projects into the cavity of the forming tool. Preferably, the tube body is connected to the packaging tube closure during the forming process, particularly in one process step.

[0067] The tube body to be connected to the packaging tube closure can be made of any material(s), particularly flexible ones. The connection between this material and the packaging tube closure is advantageously determined by a suitable choice of material dosage and / or the geometry of the molded parts in the connection area. The range of possible combinations is very extensive. In particular, the tube body that can be connected to the packaging tube closure using the method according to the invention can be made of PSY-P-04662-WP2 - 18 - 23.02.2026

[0068] Tube bodies must have any form which is elastic or non-elastic and compressible and possesses barrier properties appropriate to the packaging contents.

[0069] Preferably, before joining the molded parts to form the packaging tube closure and the associated tube body, a tube tube or a material section forming this is guided over the first molded part, preferably in such a way that a section, in particular an edge section of the tube body, projects into the cavity for connection with the packaging tube closure during the molding process when the molded parts are pressed together.

[0070] In another aspect, the invention relates to a packaging tube produced according to the aforementioned method.

[0071] The invention further relates to a device for carrying out the method for manufacturing a packaging tube closure and / or a packaging tube as described above, comprising a forming tool for a compression molding process. The forming tool has at least a first forming part and a second forming part that is movable relative to it. The first forming part comprises, on a first side, at least one recess with a retaining element arranged therein for a dose of material to be introduced into the forming tool, which is movably arranged in the recess between a retracted position and an extended position. Advantageously, the second forming part further comprises at least one orifice pin movably arranged therein for forming an outlet opening in the packaging tube closure to be manufactured.

[0072] Further advantages, features, and details of the invention are described below by way of example with reference to the schematic drawings. These are shown in: PSY-P-04662-WP2 - 19 - 23.02.2026

[0073] Fig. 1: a perspective view of a packaging unit according to the invention;

[0074] Fig. 2: a side view of the packaging tube closure according to Fig. 1;

[0075] Fig. 3: a sectional view of the packaging closure according to Fig. 1;

[0076] Fig. 4: a detailed view of area D1 in Fig. 3;

[0077] Fig. 5: a detailed view of area D2 in Fig. 3;

[0078] Fig. 6: a schematic sectional view of the packaging tube closure according to Fig. 1 together with a forming tool for carrying out the method according to the invention;

[0079] Fig. 7: a schematically simplified sectional view of the forming tool according to Fig. 6 together with a dose of material, wherein the holding element of the forming tool is in an extended position;

[0080] Fig. 8: a view corresponding to Fig. 7, with the retaining element in a retracted position;

[0081] Fig. 9a-c: a schematically simplified sectional view of another preferred embodiment of the forming tool for the production of a PSY-P-04662-WP2 - 20 - 23.02.2026

[0082] packaging closure according to the invention, together with a dose of material;

[0083] Fig. 10: a schematic top view of a lateral rotational movement of at least one part of the forming tool during the manufacturing process;

[0084] Figs. 11-15: a top view of further preferred embodiments of the forming tool together with an applied dose of material;

[0085] Fig. 16: a schematic sectional view of the material dose according to Fig. 15;

[0086] Figs. 17, 18: a top view of other possible embodiments of the applied material dose.

[0087] The illustrations in the figures are schematic and simplified. Identical elements or features are marked with the same reference symbols.

[0088] A preferred embodiment of a packaging tube closure 1 and the packaging tube 20 according to the invention, preferably manufactured using the methods according to the invention, is described below with reference to Figures 1 to 5. The geometric and structural design of the packaging tube closure 1 and the packaging tube 20 shown therein are merely schematic and exemplary. PSY-P-04662-WP2 - 21 - 23.02.2026

[0089] The packaging tube closure 1 comprises a cap element 2 with shoulder area 3 and a lid element 4 movable to it via a hinge 5. The packaging tube closure 1 is preferably formed in one piece.

[0090] The cap element 2 is preferably round or oval and has a preferably flat end closure or head region 2a and an outlet opening 6 formed therein. The head region 2a serves as the end closure of the tube when the packaging tube closure 1 is connected to a tube body 10.

[0091] The shoulder area 3 is preferably formed integrally or in one piece with the cap element 2 and extends to a side of the packaging tube closure 1 facing away from the head area 2a. The shoulder area 3 preferably forms a region with a diameter that increases in its direction of extension to provide a shoulder collar section 3a in a manner known per se. In the region of the shoulder collar section 3a, the upper end of the tube body 10 overlaps the shoulder area 3, whereby a firm connection is formed between the shoulder area 3 and the tube body 10, for example by welding, adhesion, or positive locking.

[0092] The cover element 4 comprises a closure element 7, preferably extending perpendicularly to a direction of extension of the cover element 4, preferably in the form of a projecting plug, more preferably in the form of a projecting cylindrical or tubular section. A lateral surface 7a of the closure element 7 is preferably designed such that it has a sealing function when closing the outlet opening 6. In the open position of the cover element 4, in which the packaging tube closure 1 is preferably also manufactured, the cover element 4 extends inPSY-P-04662-WP2 - 22 - 23.02.2026

[0093] Extension direction R, which runs in the axial direction Z of the packaging tube closure 1 or parallel to it.

[0094] Fig. 5 shows a detailed sectional view of the hinge 5 and the adjoining lid element 4. The hinge 5 is formed by a shaped material web of the manufactured packaging tube closure 1, which extends, particularly from the cap element 2, preferably in the direction R that runs or is arranged in the axial direction Z of the packaging tube closure 1. The hinge 5 can be formed, at least partially, as a substantially linear material web. Advantageously, the hinge 5 lies in a hinge plane E extending in or parallel to the axial direction Z. The material web 5 forming the hinge preferably has a thickness of 10 to 50%, more preferably 10 to 40%, and further preferably 10 to 30% of the thickness of the adjoining components of the lid element 4 and / or cap element 2.

[0095] The packaging tube closure 1 advantageously comprises a recess K extending in the axial direction Z, which is arranged between the lid element 4 and the cap element 2 and directly adjoins a material taper forming the hinge 5. The recess K is preferably arranged in the axial direction Z or vertically and is free of undercuts.

[0096] As can be seen particularly from Figures 2 to 4, the packaging tube 20 according to the invention comprises the packaging tube closure 1 and a tube body 10 connected to the packaging tube closure 1. Preferably, the packaging tube 20 consists of the packaging tube closure 1 and the tube body 10. PSY-P-04662-WP2 - 23 - 23.02.2026

[0097] The tube body 10 can be formed from a single material in a manner known per se. Preferably, the tube body 10 is formed from an extruded plastic tube or a composite material, in particular a laminate, comprising several material layers. The tube body 10 has a diameter adapted to the shoulder section 3a for attachment to the packaging tube closure 1. The tube body 10 preferably has an end-end connecting section 10a, which is designed to abut and connect with the packaging tube closure 1, in particular with the shoulder section 3a. Preferably, the tube body 10 is connected to the packaging tube closure 1 at the connecting section 10a during the process according to the invention. The connection of the tube body 10 to the packaging tube closure 1 preferably takes place in a single process step together with the production of the packaging tube closure 1.

[0098] A preferred embodiment of the method according to the invention is described below with reference to Figures 6 to 18. Figures 6 to 15 show only schematically simplified embodiments of a forming tool or a first forming part B of the forming tool for carrying out the method according to the invention.

[0099] The forming tool shown in Fig. 6 is suitable for carrying out a compression molding process and comprises the first mold part B and a second mold part A. The first and second mold parts A, B form a cavity C between them. The mold parts A, B are arranged to be movable relative to each other and can be brought into at least an open position and a closed position (as shown in Fig. 6). The mold parts A, B can be designed at least partially as multi-part components. PSY-P-04662-WP2 - 24 - 23.02.2026

[0100] The second molded part A advantageously consists of the sub-elements A1, A2, and A3, which are movably arranged relative to one another. The parts A2 and A3 can be sliding elements, particularly for providing or forming individual contour areas of the packaging tube closure 1. The sub-element A3 is preferably designed as an orifice pin. This serves to provide an outlet opening 6 in the packaging tube closure 1 to be produced. In the closed position of the molded parts A and B shown, the orifice pin 6 protrudes through the cavity C. The molded part B can, as shown in Figure 6, be essentially formed in one piece and have only a sliding element or retaining element 51 movably mounted therein. The first molded part B preferably forms a mandrel or a die around which the tube body 10 is arranged.In the inventive method, the first molded part B is preferably positioned such that at least the connecting section 10a projects into the cavity C, so that the tube body 10 can be connected to the packaging tube closure 1 to be formed, forming the shoulder section 3a.

[0101] The first molded part B comprises a recess 54 in which the retaining element 51 is arranged. The retaining element 51 advantageously comprises a preferably cylindrical pin extending in an axial direction Z of the recess 54, with an end face 51a that preferably continues a contour 70 of the first molded part.

[0102] The pin 51 can be moved from a retracted position (shown in Figures 6 and 8) to an extended position (see Figure 7) relative to the first molded part B by means of a drive 53 in a first direction R1, which preferably corresponds to the axial direction Z. By moving it in a second direction R2 opposite to the first direction R1, the pin 51 can be moved from the extended position to the retracted position. In the retracted position, the pin is PSY-P-04662-WP2 - 25 - 23.02.2026

[0103] The pin 51 is preferably arranged completely within the recess 54, in particular such that a surface 51a of the pin forms a continuous surface with the first molded part B, preferably a first side 30 of the molded part, which encompasses the recess 54. The pin 51 preferably rests on a stop 52 on its underside, which faces the bottom of the recess 54. The stop 52 is, for example, fixedly connected to the first molded part B and prevents further movement of the pin 51 in the second direction R2, i.e., towards the bottom of the recess 54, when the pin 51 is in the retracted position. In the extended position, the pin 51 protrudes at least partially from the recess 54.

[0104] In the inventive method for manufacturing a packaging tube closure 1, the forming tool for a compression molding process is prepared in step (a). If the pin 51 is not already in the extended position, it is moved or extended into the extended position by means of the drive 53 in a subsequent step (b). In contrast to the illustrated embodiment, it is also conceivable to provide a spring element, preferably a coil spring, more preferably a compression spring, instead of or in addition to the drive 53, wherein the pin 51 is moved from the retracted to the extended position by the restoring force of the spring element.

[0105] In step (c), a material dose 60 is applied to the first molded part B. The material dose is, for example, made of heated plastic. The material dose 60 can be applied to the first molded part B in such a way that it circumferentially surrounds the pin 51, the pin 51 preferably having a circular profile or a circular contour in plan view. As can be seen from Figures 7, 8, 10, 11, 14 to 18, the material dose 60 can be in the form of a ring or a PSY-P-04662-WP2 - 26 - 23.02.2026

[0106] The ring has a donut-like shape. It is preferably a circular or elliptical ring. It is also conceivable that the outer geometry of the ring has a circular profile and the inner profile is elliptical, or vice versa.

[0107] The material dose 60 can also have a round or oval contour in plan view, as shown, for example, in Fig. 13. Furthermore, it is conceivable that the material dose 60, as shown in Figs. 17 and 18, is formed from several material sub-doses, preferably two nested and / or at least partially overlapping rings. The material dose 60 can have a uniform thickness throughout or be of varying thickness (see Fig. 16). The material dose 60 can also have a geometry that at least corresponds to the pin 51 (see Fig. 12). In this case, the pin 51 preferably includes a lateral recess 51c in which at least a portion of the material dose 60 can be arranged.

[0108] The at least one pin 51 is preferably arranged and designed in the extended position such that it provides a lateral support and / or a stop for the material dose 60 to be arranged or already arranged on the first molded part B. In particular, the pin 51 provides a stop or support for at least partially restricting movement of the material dose in the transverse direction Q, i.e., a direction perpendicular to the axial direction Z of the retaining element 51.

[0109] In an embodiment in which the applied material dose is ring- or donut-shaped, see, for example, Figs. 7, 11, 14, an inner contour 60a of the material dose 60 is arranged adjacent to a circumferential surface 51b of the pin 51, the circumferential surface 51b forming a lateral stop for the material dose 60. PSY-P-04662-WP2 - 27 - 23.02.2026

[0110] In an embodiment in which the applied material dose 60 is arranged at least partially corresponding to a lateral contact or circumferential surface 51b of the pin 51, cf. e.g. Fig. 12, an outer contour 60b of the material dose 60 is arranged adjacent to the contact surface 51b, in particular to a concave recess 51c of the pin 51. The concave recess 51c forms a lateral contact for the material dose 60a.

[0111] In an embodiment in which the applied material dose 60 has a round or oval shape in plan view, cf. e.g. Fig. 13, the molded part B can comprise a plurality of pins 51 which at least partially surround an outer contour 60b of the material dose laterally.

[0112] Following the application of the material dose 60, a further step can involve a lateral movement of the molded part B with the applied material dose 60, as shown in Fig. 10. This can, in particular, include a lateral or rotational movement of the molded part B and preferably a rotation about an axis of rotation I. Advantageously, the rotation of the molded part B can also occur relative to the preferably stationary molded part A. Here, the molded part B is pivoted from the position shown below to the position shown above with dashed lines, whereby the inertial forces T1, T2 and TT, T2', shown only schematically, occur. For example, the molded part B can be moved or pivoted from a first application position, in which the material dose is applied to the first molded part B, to a second molding position, in which the first molded part B is arranged axially opposite the second molded part A.The material dose 60 applied to the first molded part is secured against lateral movement Q and, in particular, against falling from the first molded part B by the retaining element 51 provided according to the invention. PSY-P-04662-WP2 - 28 - 23.02.2026.

[0113] After the material dose 60 is applied to or introduced into the first molded part B, the pin 51 is moved or retracted into the retracted position in one step (d). In the illustrated embodiment, this is done by means of the drive 53. It is also conceivable to provide a spring element instead of or in addition to the drive 53, which moves the pin 51 from the extended to the retracted position by means of its restoring force. The spring element can be a coil spring, preferably a tension spring.

[0114] By bringing the second molded part A into contact with the first molded part B, the material dose 60 is formed into the packaging tube closure 1 in one step (e). In this process, the material dose 60 is distributed in a cavity C formed between the molded parts A and B.

[0115] The packaging tube closure is solidified in one step (f) and then removed from the compression mold.

[0116] Figures 9a-c show another preferred embodiment of the pin 51, in which it comprises or forms a telescopic tube, having an outer tube 57a and an inner tube 57b movably arranged therein. In step (b), the pin 51 is moved into the extended position, whereby the outer tube 57a and the inner tube 57b do not move relative to each other. After the subsequent application of the material dose 60 (see Figure 9a), the pin 51 is moved into the retracted position, and the first and second molded parts B, A are moved towards each other, forming a cavity C (see Figure 9b). In this position, the packaging tube closure is formed. PSY-P-04662-WP2 - 29 - 23.02.2026

[0117] In a further step, the packaging tube closure 1 is removed from the forming tool (see Fig. 9c). Here, the inner tube 57b can be moved from a retracted position, in which the inner tube 57b is completely enclosed within the outer tube 57a, to an extended position, in which the inner tube 57b protrudes from the outer tube 57a, particularly in the direction of the packaging tube closure (1). The inner tube 57b includes an air channel 56 with an attached compressed air supply 55, so that compressed air L can be blown into the cavity C via the air channel 56, thereby releasing the packaging tube closure 1 from the first molded part B. The air channel 56 preferably extends in the pin longitudinal direction, which preferably corresponds to the axial direction Z.

[0118] It is also conceivable that the packaging tube closure 1 is released from the first molded part B by moving the pin 51 from the retracted position to the extended position, i.e. by moving the pin 51 in the axial direction Z.

[0119] To manufacture the packaging tube 20, the tube body 10 is provided in addition to the steps described above. The tube body is positioned on the first mold part B such that a section 10a of the tube body 10 projects into the cavity C of the forming tool. Thus, the tube body 10 is automatically connected to the packaging tube closure 1 during its forming or production, preferably in step (e). Therefore, no additional steps are required to connect the tube body 10 to the packaging tube closure 1. PSY-P-04662-WP2 - 30 - 23.02.2026

[0120] Reference symbol list

[0121] 1 Packaging tube closure 2 Cap element

[0122] 2a Head area

[0123] 3 Shoulder area

[0124] 3a Shoulder strap section

[0125] 4 lid element

[0126] 5 hinge

[0127] 6 Outlet opening

[0128] 7 Locking element

[0129] 7a Closing surface

[0130] 10 tube bodies

[0131] 10a Connecting section

[0132] 20 packaging tubes

[0133] 30 first page molded part

[0134] 51 retaining element

[0135] 51a Front surface

[0136] 51b Surrounding area

[0137] 51c side recess

[0138] 52 stops

[0139] 53 Drive

[0140] 54 Recess in molded part

[0141] 55 Compressed air supply

[0142] 56 Air duct

[0143] 57a Outer pipe

[0144] 57b Inner tube

[0145] 60 material dose

[0146] 60a Inner contour

[0147] 60b Outer contour

[0148] 70 (Inner) Contour Molded Part BPSY-P-04662-WP2 - 31 - 23.02.2026

[0149] A second molded part

[0150] A1 Sub-elements

[0151] A2 sub-elements

[0152] A3 sub-elements

[0153] B first molded part

[0154] Cavity C

[0155] E hinge plane

[0156] K Recess in tube closure

[0157] L Airflow

[0158] R Extension direction of lids, hinge R1 first direction

[0159] R2 second direction

[0160] R3 Rotational movement Molded part

[0161] Z axial direction

[0162] I axis of rotation

[0163] Q transverse direction

Claims

PSY-P-04662-WP2 - 1 - 02 / 23 / 2026 Patent claims 1. Method for manufacturing a packaging tube closure (1) comprising the following steps: (a) Providing a forming tool for a compression molding process, comprising a first forming part (B) and a second forming part (A), wherein the first forming part (B) has at least one recess (54) on a first side (30) with a retaining element (51) arranged therein for a dose of material (60) to be introduced into the forming tool, which is movably arranged in the recess (54) between a retracted position and an extended position; (b) Moving the retaining element (51) into the extended position; (c) Applying and / or introducing the material dose (60) onto the first side of the first molded part (B); (d) Moving the retaining element (51) into the retracted position; (e) Forming the packaging tube closure (1) by bringing the second molded part (A) close to the first molded part (B) in such a way that the material dose (60) is distributed in a cavity (C) formed between the molded parts (A, B); and (f) Solidifying and preferably subsequently removing the formed packaging tube closure (1).

2. Method according to claim 1, wherein the retaining element (51) is designed such that it does not interfere with an opposing element in either the extended or retracted position. The cavity (C) limiting element, in particular the second molded part (A), is in contact.

3. Method according to claim 1 or 2, wherein the first mold part (B) is free of an orifice pin arranged therein, which is designed to form an outlet opening (6) in the packaging tube closure (1) to be formed.

4. Method according to one of the preceding claims, wherein the retaining element (51) comprises a preferably cylindrical pin with an end face (51a) continuing a contour (70) of the first molded part (B).

5. Method according to one of the preceding claims, wherein the retaining element (51) is configured to provide, in the extended position, a lateral support and / or a stop for the dose of material to be arranged or arranged on the first molded part (B).

6. Method according to one of the preceding claims, wherein in step (d) the retaining element (51 ) is moved into the recess (54) until an end face (51a) of the retaining element (51) is aligned in the transverse direction with an area of ​​the first side (30) of the first molded part (B) adjacent to the retaining element (51), in particular a contour (70) of the first molded part (B).

7. Method according to one of the preceding claims, wherein the holding element (51) is moved linearly in a first direction (R1) by means of a drive (53) in step (b) and in a second direction (R2) opposite to the first direction (R1) in step (d). PSY-P-04662-WP2 - 3 - 23.02.2026 is moved, whereby movement of the holding element (51) is otherwise preferably excluded.

8. Method according to one of the preceding claims, wherein the first molded part (B) together with the material dose (60), preferably after step (c), is rotated about an axis of rotation, in particular by means of a rotary device, wherein preferably a distance of the retaining element (51) to the axis of rotation is greater than a distance of the material dose (60) to the axis of rotation.

9. Method according to claim 8, wherein the first mold part (B) is rotated relative to the second mold part (A).

10. Method according to one of the preceding claims, wherein in step (c) the material dose (60) is applied to / into the first molded part (B) such that the material dose (60) has a hole and / or a notch in the area of ​​the retaining element (51), wherein an area defining the hole and / or the notch, in particular an inner contour (60a), of the material dose (60) is arranged adjacent to and preferably surrounds a circumferential surface (51b) of the retaining element (51).

11. A method according to any one of claims 1 to 9, wherein in step (c) the material dose (60) is applied to and / or introduced into the first molded part (B) such that the material dose (60) has a geometry, in particular an outer contour (60b), that at least partially corresponds to a lateral contact surface or circumferential surface (51b) of the retaining element (51), wherein the retaining element (51) preferably comprises a lateral and preferably concave recess (51c). PSY-P-04662-WP2 - 4 - 23.02.2026 12. Method according to one of the preceding claims, wherein the first molded part (B) comprises at least two recesses (54), more preferably a plurality of recesses (54) with a retaining element (51) movably arranged therein, wherein in step (c) the material dose (60) is preferably applied to / into the first molded part (B) such that the material dose (60) is arranged between the retaining elements (51) and / or wherein at least one of the retaining elements (51) is further away from an axis of rotation of a rotary device than the material dose (60).

13. Method according to one of the preceding claims, wherein in step (d) the holding element (51) is moved until it comes to rest against a stop (52) provided in the recess (54).

14. Method according to one of the preceding claims, wherein in step (f) for the removal of the formed packaging tube closure (1) air is blown through an air channel located in the retaining element (51) in such a way and / or the retaining element (51) is moved into the extended position in such a way that the packaging tube closure (1) detaches from the first molded part (B).

15. Method according to one of the preceding claims, wherein the retaining element (51) is or comprises a telescopic tube having an outer tube and an inner tube, wherein in step (f) the inner tube is moved from a retracted position in which the inner tube is completely arranged in the outer tube to an extended position in which the inner tube is extended from the outer tube. PSY-P-04662-WP2 - 5 - 23.02.2026 protrudes, in particular in the direction of the packaging tube closure (1), which preferably corresponds to the first direction (R1), wherein the inner tube more preferably has the air channel and air is more preferably blown through the air channel when the inner tube is in the extended position.

16. Packaging tube closure (1) for a packaging tube (20), manufactured by the method according to any one of claims 1 to 15.

17. Method for producing a packaging tube (20) with a packaging tube closure (1), comprising the steps of the method according to one of claims 1 to 15 and providing a tube body (10) for connection with the packaging tube closure (1), preferably such that at least one section (10a) of the tube body (10) projects into the cavity (C) of the forming tool, wherein the tube body (10) is connected to the packaging tube closure (1) during the forming process, preferably in one process step.

18. Packaging tube (20) manufactured according to the method of claim 17.

19. Device for carrying out the method according to one of claims 1 to 15 and / or 17, comprising a forming tool for a compression molding process, comprising at least a first forming part (B) and a second forming part (A) movable relative thereto, wherein the first forming part (B) comprises at least one recess (54) on a first side (30) in which a retaining element (51) is movably arranged between a retracted position and an extended position.

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