EP3829993A1

EP3829993A1 - Tubular packaging and method for manufacturing same

Info

Publication number: EP3829993A1
Application number: EP18814814.2A
Authority: EP
Inventors: Johann Beil; Ulrich Schlapp
Original assignee: Linhardt GmbH and Co KG
Current assignee: Linhardt GmbH and Co KG
Priority date: 2018-08-03
Filing date: 2018-11-28
Publication date: 2021-06-09
Also published as: WO2020025155A1; DE102018118888A1

Abstract

The invention relates to a tubular packaging (1) comprising a tube casing (2), a tube head having a tube shoulder (6) and a tube nipple (7), and a closure cap (13) having a casing portion (13.1) and a lid portion (13.2). The closure cap (13) engages around the tube nipple (7) with at least one portion of its casing portion (13.1). The tube nipple (7) has an outlet opening (8) in a portion facing away from the tube shoulder (6). The tube shoulder (6) is connected to the tube casing (2) in an edge region (6.1) facing away from the tube nipple (7), wherein the tube nipple (7) projects over the surface of the tube shoulder (6) in a direction away from the tube casing (2). The tube head having the tube shoulder (6) and the tube nipple (7) is designed as a one-piece moulded plastic part, wherein the tube head and the tube casing (2) delimit a tube interior (TI). The closure cap (13) has at least one barrier layer (11) on its cover portion (13.2) inner surface facing the casing portion (13.1).

Description

TUBE PACKING AND METHOD FOR THE PRODUCTION THEREOF

Technical field

The invention relates to tube packaging.

State of the art

Tube packaging made of plastic is known from the prior art in a wide variety of designs. The tube packaging generally consists of a tubular or tubular tube jacket and a tube shoulder made of plastic as a molded part with a tube nipple, which also includes the outlet opening of the tube. The tube shoulder is inserted with a tube shoulder section opposite the dispensing opening into one of the open ends of the tube shell and connected to the tube shell in a suitable manner, for example by welding. The tube jacket of such tube packaging is often formed in multiple layers with an outer plastic layer and with a barrier layer delimiting the interior of the tube. For example, DE 10 2011 101 260 B4 discloses a tube packaging in which the tube jacket and tube shoulder are provided with a barrier layer against oxygen. The barrier layers on the tube jacket and on the

Tube shoulders are designed so that they are in the area of the connection between

Connect the tube shoulder and tube jacket directly to one another so that there is a continuous barrier layer from the dispensing opening to the end of the tube jacket that is opposite the dispensing opening and is closed after filling. Also from EP 1 520 796 A1 is a tube with a tube jacket and one

Tube head known, the tube jacket and tube head are provided on their inner sides with a barrier layer.

In addition, it is often desirable to provide the delivery opening of the tube packaging with a closure element which acts as a tamper-evident device and which has to be removed before the filling material is removed for the first time. In this context, EP 2 703 312 B1 discloses a plastic tube head connected to a tube body. An insert made of aluminum or vinyl ethylene alcohol is provided in the tube head, which closes the dispensing opening. Before using the tube for the first time the insert is pierced with a piercing spike located on the tube closure cap, so that the opening for dispensing the product is opened.

EP 0 873 942 A1 describes a packaging tube with a tube head produced as an injection molded part or a pressed part, the tube head having a diffusion barrier layer on the side facing the tube contents. The diffusion barrier layer designed as a film-shaped insert also takes on the function of a

Tamper-evident and closes the dispensing opening on the tube head. The well-known tube packaging, including those with tamper evidence, have the disadvantage that after the first and after each subsequent

Removal of contents due to leaks, especially in the area of

Air sealing cap and thus oxygen and water vapor can penetrate into the interior of the tube. The frequently provided barrier layers provide an effective barrier against the tube casing, especially in the welded one

Edge area, penetrating oxygen and water vapor cannot prevent this penetration through the dispensing opening in the area of the closure cap.

Despite the solutions known from the prior art, there is therefore still a need for tube packaging which is equipped with an effective barrier against ingress of oxygen and water vapor.

Presentation of the invention

The present invention has for its object to provide a tube packaging that is equipped with an effective barrier against the ingress of oxygen and water vapor. This object is achieved by the tube packaging according to independent claim 1. Further advantageous aspects, details and refinements of the invention result from the dependent claims, the description and the drawings.

The present invention provides a tube packaging comprising a tube jacket, a tube head having a tube shoulder and a tube nipple, and a closure cap having a jacket section and a lid section. The closure cap engages around the tube nipple with at least a partial section of its jacket section. The tube nipple has a dispensing opening in a section facing away from the tube shoulder. The tube shoulder is connected to the tube shell in an edge region facing away from the tube nipple, the tube nipple in a direction away from the tube shell over the surface of the tube shoulder projects. The tube head with tube shoulder and tube nipple is designed as a one-piece molded part made of plastic, the tube head and the tube jacket being one

Limit the interior of the tube. The closure cap has at least one barrier layer on its inner surface of the cover section facing the jacket section.

The barrier layer provided according to the invention on the inner surface of the cover section of the closure cap facing the jacket section of the closure cap represents a highly effective barrier against the penetration of oxygen and water vapor through the dispensing opening in the region of the closure cap.

It has been found that the unavoidable penetration of oxygen and water vapor during the first and also each subsequent removal of filling material represents the lesser problem with regard to the durability and reusability of the remaining filling material in the tube packaging. Of both

Extraction processes that penetrate oxygen and water vapor can be well bound by layers optionally provided in the interior of the tube that absorb or absorb the substances mentioned. A much bigger problem is the amount of oxygen and water vapor that penetrates through leaks in the area of the closure cap during storage of the tube packaging with residual contents contained therein. These leaks can be caused by improper attachment of the cap, but can also be caused by minor damage in the area of the dispensing opening or by production tolerances. The barrier layer provided according to the invention on the inner surface of the cover section of the closure cap facing the jacket section of the closure cap prevents the penetration of oxygen and water vapor and brings about a significant extension of the shelf life and freshness of the residual filling contained in the tube packaging.

The tube casing preferably has a tube body layer and at least one

Barrier layer on. The barrier layer is on an inner surface of the tube body layer facing the tube interior and / or on one of the tube interior

facing away from the outer surface of the tube body layer. Tube packaging is often provided on its surface facing the tube interior and / or on its surface facing away from the tube interior with a so-called barrier layer, which in particular prevents the penetration of oxygen and water into the

Should prevent the interior of the tube. The preferred below

Embodiments of the present invention have such barrier layers in an increasing area of the tube interior and / or the

Surface facing away from the interior of the tube. This creates an increasingly effective barrier against the ingress of oxygen and water. The tube shoulder preferably has at least one barrier layer on its outer surface facing away from the tube interior and / or on its inner surface facing the tube interior. According to a further preferred embodiment, the tube nipple is equipped with at least one barrier layer on its inner surface facing the tube interior and / or on its outer surface facing away from the tube interior.

According to a particularly preferred embodiment, one in the range of

Tubing nipple arranged tamper-evident element is provided, the tamper-evident element completely separating the dispensing opening from the tube interior. In this case the tube head consists of tube shoulder,

Tube nipple and tamper-evident element.

It is very particularly preferred to design the tube head consisting of tube shoulder, tube nipple and tamper-evident element as a one-piece molded part made of plastic, as a result of which a particularly simple and inexpensive manufacture is possible by means of an injection molding process or by pressing plastic. In particular, no subsequent application of a film or other closure is required, by means of which the originality of a tube packaging comprising the tube head can be ensured. The tamper-evident element is arranged in the area of the tube nipple and separates the dispensing opening from that

Tube interior completely. When the tube head is placed in the

Injection molding or pressing can thus ensure the originality of the tube packaging comprising this tube head by a web made of plastic which closes the tube opening and is produced in the same operation. In this context it should be mentioned that the tube head is preferably designed in a geometry suitable for coating. In a manner known to the person skilled in the art, in particular edges are avoided, which can lead to problems during the coating process by forming an insufficient coating thickness.

The tube nipple preferably has at least one barrier layer on its inner surface facing the tube head interior and / or on its outer surface facing away from the tube head interior.

The tamper-evident element particularly preferably has at its, the

Inner surface facing the tube interior and / or at least one barrier layer on its outer surface facing away from the tube interior.

As already mentioned, the tamper-evident element is arranged in the area of the tube nipple and completely separates the dispensing opening from the tube interior from. The tamper-evident element can in principle be attached directly at the transition from the tube shoulder to the tube nipple, as well as at any distance from the transition from the tube shoulder to the tube nipple. This is preferred

Tamper-evident element arranged at a distance from the tube shoulder, particularly preferably it is arranged adjacent to the dispensing opening. In these embodiments, only that part of the inner surface of the tube nipple is preferably provided with a barrier layer which is in contact with the tube interior and thus with the filling material after the tube packaging has been completed. If, for example, the tamper-evident element is arranged equidistant between the dispensing opening and the area in which the tube nipple and tube shoulder adjoin each other, it is particularly preferred that only the lower half of the tube nipple facing the tube interior is equipped with a barrier layer.

The tamper-evident element preferably has at least one predetermined breaking point. After the tube head and tube shell have been connected, the tube is formed

Tube packaging filled with a filling material. The tamper-evident seal closing the dispensing opening must be destroyed before the filling material is removed for the first time. The preferably provided predetermined breaking point and in particular the particularly preferably provided two predetermined breaking points facilitate this destruction of the

Tamper-evident element.

The tamper-evident element particularly preferably has at least one

Target kink at. The destruction of the tamper-evident element is also facilitated by a predetermined kink and in particular by the two, three and in particular four predetermined kinks provided.

Very preferably, predetermined breaking points and predetermined breaking points are provided at the same time, and two predetermined breaking points and four are particularly preferred

Target kinks provided. The four predetermined kinks essentially form a square base, the corners of which are arranged adjacent to the inner surface of the tube nipple. The two predetermined breaking points form the diagonals of the predetermined breaking point square. If the tamper-evident element is destroyed, four triangular flaps form in this embodiment, which flap inwards in the direction of the tube interior along the respective predetermined kink. When filling material is removed, these flaps are moved upwards again towards the dispensing opening, but this does not impede the removal process. Once the removal process has been completed, the triangular flaps at least partially fold back into their original position due to their material elasticity and in this way ensure that the dispensing opening is at least partially closed even after a removal process. It is clear to the person skilled in the art that any variation in the number and the course of the predetermined breaking points and the predetermined breaking points is conceivable. For example, a polygon of predetermined kinks on the circumferential edge of the tube nipple side

Tamper-evident element can be provided. If the corners of the polygon are connected to each other by predetermined breaking points that preferably run through the center of the tamper-evident element, a star-like structure is formed from which, after the tamper-evident element has been destroyed, a larger number of acute-angled triangles form, which facilitate the folding processes described above. However, any further variants with regard to the number and course of the predetermined breaking points and the predetermined breaking points are also conceivable.

The closure cap provided according to the invention is preferably a screw closure cap, a hinged lid or a dispenser. In any case, the closure cap has a sheath section encompassing the nipple at least in a partial section and a shroud section closing the dispensing opening

Lid section.

If the cap is a screw cap, the outside of the tube nipple is equipped with an external thread. The

In its jacket section, the screw cap has an internal thread corresponding to the external thread of the tube nipple, the external thread of the tube nipple and the internal thread of the closure cap having a common axis of rotation. This makes the tube packaging easy to close

Screwing the cap to the tube nipple allows.

In the case of a screw cap, it is particularly preferred that it has a second jacket section in addition to its jacket section. In this case, the cover section separates the jacket section from the second jacket section. In this embodiment too, the tube nipple is equipped with an external thread on its outside. The screw cap has in its jacket section an internal thread corresponding to the external thread of the tube nipple, whereby a simple closure of the tube packaging is made possible by screwing the closure cap onto the tube nipple. In addition, a projection is provided in the area of the cover section of the screw cap facing the second jacket section, the projection being attached to the tube nipple

Screw cap engages through the dispensing opening and into the tube nipple.

This embodiment describes the basically known procedure on the

To provide a device with which the tamper-evident seal closing the dispensing opening is removed before the first removal of the filling material can be. The cap, which is fixed on the tube by means of the corresponding threads of the tube nipple and the cap, is unscrewed from the tube packaging, rotated by 180 ° and with the second one

The jacket section is attached to the tube nipple beforehand. The projection provided on the inside of the second jacket section of the closure cap, which can be a pin-like, a tapering, a hollow cylindrical or otherwise shaped projection, is inserted into the dispensing opening and pressed in the direction of the tube interior until the

Tamper-evident element is destroyed to such an extent that the filling material comes out of the

Tube interior can be removed.

The outer diameter of the projection is particularly preferably between 90% and 99% of the inner diameter of the tube nipple. Thanks to these coordinated diameters, the tamper-evident element can be completely removed with high reproducibility.

The closure cap particularly preferably has on the inside of the tube

facing inner surface of the lid portion on an annular circumferential projection, the projection engages around the tube nipple flush in the region of the dispensing opening. Due to the flush gripping of the tube nipple, a particularly tight closure and in particular a particularly tight reclosure of the

Dispensing opening reached after filling product has been removed. This further impedes the penetration of oxygen and water vapor. The projection particularly preferably has at least one barrier layer on its surface facing the tube nipple. This further barrier layer further impedes the penetration of oxygen and water vapor and ideally completely prevents it.

It is clear to the person skilled in the art that “ring-shaped circumferential projection” is not exclusively understood to mean “circular circumferential projection”. As a rule, the dispensing opening has the shape of a circular disk in a horizontal section and the tube nipple also generally has the one defining the dispensing opening

Edge area a circular shape, but it is basically, especially in the case of

Hinged lids, also other geometries, e.g. elliptical, conceivable. Regardless of the geometry of the tube nipple, the projection is always designed such that it surrounds the tube nipple flush in the area of the dispensing opening.

The tube body layer of the tube jacket preferably consists of plastic or metal, in particular of a plastic monomaterial or of a plastic laminate, of aluminum or of an aluminum alloy. Polyethylene and in particular HDPE is particularly preferred. The materials mentioned have favorable properties during the manufacturing process and, on the other hand, advantageously provide the elastic deformability of the tube shell desired to maintain the dimensional stability. The use of a plastic monomaterial is associated with the particular advantage that the tube body layer of the tube jacket can be extruded in a tube.

The barrier layer of the closure cap is particularly preferably that

Barrier layer of the tube jacket, the barrier layer of the tube shoulder, the

Barrier layer of the tube nipple, the barrier layer of the tamper-evident element and the barrier layer of the on the jacket portion of the cap

facing inner surface of the lid portion of the closure cap provided independently of aluminum, SiOx, SiNx, silicon, chrome, stainless steel or mixtures thereof. Particularly preferably, there are both the barrier layer of the closure cap and the barrier layer of the tube jacket as well as the barrier layer of the tube shoulder and the barrier layer of the tube nipple as well as the barrier layer of the

Tamper-evident element as well as the barrier layer of the on the

Jacket portion of the cap facing the inner surface of the cover portion of the cap provided projection either made of aluminum or SiOx or SiNx or silicon or chrome or stainless steel or one of their mixtures. According to these embodiments, the complete surface delimiting the tube interior is provided with a barrier layer made of the same material, at least inside or outside, but also inside and outside.

Basically, the tube shoulder and tube jacket can be provided with a barrier layer independently of one another on the inside and / or outside. It is both possible that the tube shoulder has a barrier layer on its surface facing the tube interior and the tube jacket on its surface facing away from the tube interior, but it is also possible in the opposite case that the tube shoulder on its surface facing away from the tube interior has one

Has a barrier layer and the tube jacket has such a barrier layer on its surface facing the tube interior. It is also conceivable that, for example, the tube shoulder is provided with a barrier layer on the inside and outside, but the tube jacket is only on the inside or only on the outside. The reverse case is also possible, as is the fitting of the tube head and tube shell with two each

Barrier layers that are arranged inside or outside.

The preferred materials ensure extremely good properties of the barrier layer with regard to the barrier effect against materials such as especially oxygen and water, whose penetration into the interior of the tube is to be prevented. This property is particularly advantageous when all barrier layers are made of the same material.

Chromium with a purity of 2N5 or 3N5 is particularly preferred; stainless steel is used as stainless steel 1.4301, stainless steel V4A or stainless steel 1.4571. Silicon bonded to molybdenum is used as the silicon source. In principle, any material that is electrically conductive or that can be made electrically conductive by additives can be used for a sputtering process. Basically are as

Materials suitable for the barrier layers are all materials that have a specific electrical resistance <1 Qcm.

According to a preferred embodiment, the barrier layer of the closure cap and / or the barrier layer of the tube jacket and / or the barrier layer are

Tube shoulder and / or the barrier layer of the tube nipple and / or the barrier layer of the tamper-evident element and / or the barrier layer of the other

Jacket portion of the cap facing the inner surface of the lid portion of the cap provided projection in two layers, the second layer being an oxygen-absorbing layer. This is, for example, a coating that is in a product-neutral matrix, e.g. B. in a plastic matrix such as a polyethylene matrix, contains an oxygen-reactive and absorbing additive. Base metals in powder form are particularly suitable as an oxygen absorbing additive, e.g. B. iron, preferably annealed and / or electrolytically reduced base metals such. B. metal halides.

The oxygen-absorbing coating removes oxygen present in the tube interior, but also in the filling material present in the tube. This effectively prevents an impairment of the product, in particular an impairment of the shelf life and / or quality, and also of the taste quality of the contents by oxygen. In particular, air and thus oxygen can penetrate into the interior of the tube if, during a removal process that ends with a reduction in the pressure acting from the outside, a negative pressure occurs in the interior of the tube. This penetrating oxygen is immediately bound by the oxygen-absorbing coating before the contents are damaged by oxidative processes.

Both the barrier layer of the closure cap and the barrier layer of the tube jacket as well as the barrier layer of the tube shoulder as well as the barrier layer of the tamper-evident element and the barrier layer of the inner surface of the closure section facing the jacket section are particularly preferred Cover portion of the cap provided projection as well

Barrier layer of the tube nipple formed in two layers and provided with the oxygen absorbing coating. In the preferred embodiment described above, the oxygen is

absorbing coating is provided in addition to the barrier layer, so that even oxygen that has passed through the barrier layer or through leaks in the barrier layer is absorbed by the oxygen-absorbing coating even before this oxygen can react with the filling material present in the tube packaging. It goes without saying that the oxygen-absorbing

Coatings are always arranged on the surface of the tube jacket and / or tube head and / or tamper-evident element and / or sealing cap facing the tube interior. The barrier layer of the closure cap and / or the barrier layer of the tube jacket and / or the barrier layer of the tube shoulder and / or the barrier layer of the

Tube nipple and / or the barrier layer of the tamper-evident element and / or the barrier layer of the protrusion provided on the inner surface of the cover portion of the closure cap facing the jacket section of the closure cap acts or preferably acts at least against water vapor and / or at least against oxygen.

According to a further particularly preferred embodiment of the present invention, the barrier layer of the closure cap and / or the barrier layer of the tube jacket and / or the barrier layer of the tube shoulder and / or are

Barrier layer of the tube nipple and / or the barrier layer of the

Tamper-evident element and / or the barrier layer of the on the

Jacket portion of the cap facing the inner surface of the cover portion of the cap provided by evaporation and / or through

Sputtering and / or by electrical deposition and / or by chemical

Deposition of the material forming the barrier layer is formed.

Further advantages of the present invention come to light if the barrier layer provided according to the invention on the inner surface of the cover section of the closure cap facing its jacket section is combined with a barrier layer which extends over the entire surfaces defining the tube interior, i.e. a barrier layer which in each case corresponds to the , the interior of the tube facing surfaces of the tube shell, the tube shoulder, the tamper-evident element and the tube nipple is attached. In this case, the same material is used for the entire barrier layer and this material with that in all cases applied the same process, the entire tube interior including the cap can be provided with a barrier layer in a single step. For reasons of production technology, it is often cheaper to provide the cap and tube jacket with tube head as a separate unit with a barrier layer and to connect them only afterwards. In this case, the entire tube jacket and tube head with tube shoulder and tube nipple can nevertheless be provided with a barrier layer on the inner and / or outer surface in one step. It is also possible to provide the tube head and tube jacket with a barrier layer separately from one another and only then to connect the two elements to one another.

If the tube head and tube casing are connected after the

Barrier layers are advantageously designed in such a way that they directly adjoin one another in the area of the connection between the tube shoulder and the tube jacket, so that in this case too, a continuous overall barrier layer extends from the dispensing opening to that of the dispensing opening

opposite and sealed after filling with filling material tube jacket end. If the cap and tube jacket with the tube head are provided as a separate unit with a barrier layer and are only connected to one another subsequently, there is the advantage that the projection provided on the inner surface of the cap section of the cap facing the jacket section of the cap on its surface facing the tube nipple in one Operation with the inner surface of the lid section facing the tube interior can be equipped with a barrier layer.

The filling material is preferably a paste, a cream, a gel or a liquid. The present invention has particular advantages when the contents are products sensitive to oxygen and water, since their foldability can be particularly significantly extended.

The present invention also includes a method for fixing a

Tube packaging as described above, the method comprising the steps of: a) providing a tube jacket,

b) Fierstellen of a tube head designed as a one-piece molded part made of plastic by injection molding or pressing plastic, the tube head consisting of a tube shoulder and a tube nipple, the tube nipple having a dispensing opening in a section facing away from the tube shoulder, c) firm connection of tube shell and tube head to form a

Tube interior in such a way that the tube nipple projects in one direction away from the tube jacket over the surface of the tube shoulder, the tube shoulder being connected to the tube jacket in an edge region facing away from the tube nipple,

d) providing a closure cap, the closure cap having a jacket section and a cover section,

e) applying at least one barrier layer to that of the jacket section

facing inner surface of the cover section of the closure cap,

f) fastening the closure cap to the tube head in such a way that the closure cap engages around the tube nipple with at least a portion of its jacket portion.

As already stated, the barrier layer provided according to the invention on the inner surface of the cover section of the closure cap facing the jacket section represents a highly effective barrier against the ingress of oxygen and water vapor through the dispensing opening in the region of the closure cap, thereby significantly extending the shelf life and freshness of the tube packaging contained filling is caused. The tube jacket and tube head are connected in a manner known to those skilled in the art, for example by latching or welding the tube shoulder to the tube jacket.

In the case of embodiments in which the tube shell has a tube body layer and at least one barrier layer, the barrier layer being arranged on an inner surface of the tube body layer facing the tube interior and / or on an outer surface of the tube body layer facing away from the tube interior, the barrier layer of the tube shell is preferably vapor-deposited and / or by sputtering and / or by electrical deposition and / or by chemical

Deposition of the material forming the barrier layer of the tube jacket is applied. These are the methods familiar to those skilled in the art for applying barrier layers. There are particular advantages in terms of time and

Cost savings if only one method for applying the entire

Barrier layer is used. This will be the case in particular if the entire barrier layer consists of a certain material. If two or more different materials are used, different application methods can be used for the different materials.

In the case of embodiments in which the tube shoulder at its, the

Tube interior facing away from the outer surface and / or on its, the tube interior facing inner surface has at least one barrier layer, the

Barrier layer of the tube shoulder preferably by vapor deposition and / or through

Sputtering and / or by electrical deposition and / or by chemical

Deposition of the material forming the barrier layer applied. There are particular advantages if the tube head is only connected to the tube shell provided after the respective barrier layers have been applied. The tube shoulder is then provided with a barrier layer separately from the tube jacket, with no problem for the tube shoulder on the one hand and for the tube jacket on the other

different materials that may be applied by different methods can be used. In this context it should be mentioned again that the tube head is preferably designed in a geometry suitable for coating. In a manner known to the person skilled in the art, in particular edges are avoided, which can lead to problems during the coating process by forming an insufficient coating thickness.

In the case of embodiments in which the tube nipple at its, the

Inner surface facing the tube interior and / or at least one barrier layer on its outer surface facing away from the tube interior (TI), this barrier layer of the tube nipple is preferably vapor-deposited and / or

Sputtering and / or by electrical deposition and / or by chemical

Deposition of the material forming the barrier layer applied.

In the case of embodiments in which the closure cap at its the

The inner surface of the lid section facing the tube interior has an annular circumferential projection, the projection engaging flush around the tube nipple in the region of the dispensing opening and the projection having at least one barrier layer on its surface facing the tube nipple

Barrier layer is preferably applied by vapor deposition and / or by sputtering and / or by electrical deposition and / or by chemical deposition of the material forming the barrier layer.

There are particular advantages in terms of time and cost savings if only one method is used to apply all the different barrier layers. This will be the case in particular if the entire, the inner and / or the outer surface of the tube head, the tube jacket and the tube cover

covering barrier layer is made of a certain material. If two or more different materials are used, different application methods can be used for the different materials. After the closure cap has been fastened to the tube head, it is advantageous to fill the tube interior with a filling material and to close the tube jacket at its end opposite the tube shoulder by welding its edge region. The welding of the tube casing is a long-established process that ensures a secure, permanent closure and that can be carried out inexpensively at the same time.

Further developments, advantages and possible uses of the invention also result from the following description of exemplary embodiments and from the figures.

Brief description of the drawings

The invention will be explained in more detail below using exemplary embodiments in conjunction with the drawings. Show it

Fig. 1 shows a schematic representation of a vertical section through a

Tube packaging without cap;

Fig. 2 shows a schematic representation of a vertical section through the

Tube packaging according to Figure 1 with cap.

Fig. 3 shows a schematic representation of a vertical section through the

Tube packaging according to FIG. 2 with tamper-evident element.

Ways of Carrying Out the Invention

FIGS. 1 and 2 each show a schematic vertical section through an embodiment of a tube packaging 1 according to the invention. FIG. 1 shows the tube packaging without a closure cap, while FIG. 2 shows the same tube packaging with a closure cap.

The tube packaging 1 has a tube jacket 2 delimiting a tube interior TI and a tube head consisting of a tube shoulder 6 and a tube nipple 7. The tube nipple 7 projects in a direction away from the tube interior TI over the surface of the tube shoulder 6 and has a dispensing opening 8 in a section facing away from the tube shoulder 6. The tube nipple 7 is also equipped on the outside with an external thread 7.1. The tube head with tube shoulder 6 and Tube nipple 7 is designed as a one-piece molded part made of plastic and closes one end of tube shell 2 in a known manner.

The tube jacket 2 is formed in two layers and has a tube body layer 3 and an inner barrier layer 4 facing the tube interior TI. The

Tube body layer 3 is formed from a plastic laminate, while the inner barrier layer 4 has a barrier to oxygen and water vapor and is formed from silicon oxide (SiOx). The tube body layer 3 of the tube jacket 2 is produced from a flat material by rolling the flat material into a tubular structure and by connecting the edge regions of the flat material which are adjacent to one another after the rolling.

The tube head with the annular area 6.1 of the tube shoulder 6 remote from the dispensing opening 8 is inserted into the open end of the tube shell 2 and connected to it in a suitable manner, for example by welding, gluing, etc., in such a way that the tube shell 2 the tube shoulder 6 overlaps in a partial area on its outside and thus lies partially against the outer surface of the sloping section of the tube shoulder 6, in such a way that there is a continuous or essentially stepless transition from the outer surface of the tube shoulder 6 to the outer surface of the tube shell 2 results.

The tube head and tube jacket 2 can be connected before or after the application of the various barrier layers. The present invention thus encompasses embodiments in which the tube head and tube jacket are first connected and the desired barrier layers are only applied subsequently, and embodiments in which the desired barrier layers are first applied to the tube head and tube jacket and only then the connection of the tube head and tube jacket is made. Embodiments are of course also conceivable in which either tube head or tube jacket are first provided with the desired barrier layers, then tube head and

Tube jacket are connected and then the desired barrier layers are applied to either tube head or tube jacket, depending on the surface on which the barrier layer is still missing. In the tube packaging 1 shown, the tube jacket 2 has a barrier layer 4, the tube shoulder 6 is equipped with a barrier layer 9 and the inner surface of the tube nipple 7 has a barrier layer 12. All barrier layers 4, 9,

12 have a blocking effect against oxygen and water vapor and consist of

Silicon oxide (SiOx). The one made of the plastic polyethylene by injection molding The tube head is therefore equipped with a barrier layer on its entire inner surface, ie on its entire surface facing the tube interior TI.

The tube packaging 1 shown in FIG. 2 additionally has a closure cap 13, the closure cap 13 comprising a jacket section 13.1 and a cover section 13.2. The tube nipple 7 is equipped on the outside with an external thread 7.1. In its jacket section 13.1, the closure cap 13 has an internal thread 13.3 corresponding to the external thread 7.1 of the tube nipple 7, the external thread 7.1 of the tube nipple 7 and the internal thread 13.3

Sealing cap 13 have a common axis of rotation D. This enables a simple closure of the tube packaging 1 by screwing the closure cap 13 to the tube nipple 7. The closure cap 13 is provided with a barrier layer 11 on its inner surface of the lid section 13.2 facing the tube interior TI.

The closure cap 13 has on its inner surface of the cover section 13.2 facing the jacket section 13.1 of the closure cap 13 and thus also the tube interior TI, a projection 5 which extends in a ring around the axis of rotation D, the projection 5 surrounding the tube nipple 7 flush in the region of the dispensing opening 8. On its surface facing the tube nipple 7, the projection 5 has a

Barrier layer 10 on. The barrier layer 10, together with the flush gripping of the tube nipple 7, causes a tight closing and in particular a tight reclosing of the dispensing opening 8 after the filling material has been removed. This significantly impedes the penetration of oxygen and water vapor and ideally completely prevents it.

All barrier layers 4, 9, 10, 11, 12, which have a barrier effect against oxygen and water vapor and are made of silicon oxide (SiOx), are preferably applied by sputtering.

Due to the continuous and seamless connection

Barrier layers 4, 9, 10, 11, 12, the entire tube interior TI is leakproof or essentially leakproof against oxygen from the ambient air and is particularly suitable for absorbing products such as flax dye, for which tubes made of aluminum are currently frequently used due to their aggressiveness towards plastic ,

The tube packaging 1 shown in FIG. 3 additionally has

Tamper-evident element 14, which is equipped with a barrier layer 15. The tamper-evident element 14 is arranged in the area in the tube nipple 7 and tube shoulder 6 adjoin each other, but can be attached over the entire extension of the tube nipple 7, in extreme cases also directly on the

Dispensing opening 8.

The inner surface of the tube nipple 7 is not in contact with the tube interior TI before the first filling material is removed, but is usually nevertheless provided with a barrier layer 12, since after the first removal of the filling material and

Storage of residual filling in the area of the tube nipple should prevent the ingress of oxygen and water vapor. The closure cap 13 has on the jacket portion 13.1 of the closure cap 13 and thus also the

Tube interior TI facing inner surface of the lid portion 13.2 on a ring around the axis of rotation D projection 5, the projection 5 the

Grips around the tube nipple 7 in the area of the discharge opening 8. At its the

The surface 5 facing the tube nipple 7 has a barrier layer 10.

In the tube packaging 1 shown in FIG. 3, the tube jacket 2 has a

Barrier layer 4, the tube shoulder 6 is equipped with a barrier layer 9, the inner surface of the tube nipple 7 has a barrier layer 12, the closure cap 13 is provided with a barrier layer 11 and the tamper-evident element 14 is provided with a barrier layer 15. The barrier layers 4, 9, 10, 11, 12, 15 have a blocking effect against oxygen and water vapor and consist of silicon oxide (SiOx).

Until the tube packaging 1 is filled with the filling material, the end of the tube jacket 2 opposite the tube head is open. After filling the

Tube packaging 1 is the end of the tube head 5 opposite

Tube jacket 2 closed in the usual way, for example by welding.

LIST OF REFERENCE NUMBERS

1 tube packaging

2 tube jacket

3 tube body layer

4 Barrier layer of the tube jacket

5 head start

6 tube shoulder

7 tube nipples

7.1 Male thread of the tube nipple

8 dispensing opening

9 Barrier layer of the tube shoulder

10 barrier layer of the tab

11 Barrier layer of the cap

12 Barrier layer of the tube nipple

13 sealing cap

13.1 Sheath section of the closure cap

13.2 Lid section of the closure cap

13.3 Internal thread of the sealing cap

14 tamper-evident element

15 barrier layer of the tamper-evident element

TI tube interior

D axis of rotation

Claims

claims

1. Having tube packaging (1)

- a tube jacket (2),

- A tube head (6) and a tube nipple (7) having tube head, and

- A cap section (13.1) and a cap section (13.2) having a closure cap (13), the cap (13) encompassing the tube nipple (7) with at least a partial section of its jacket section (13.1), the tube nipple (7) in one of the Section facing away from the tube shoulder (6) has an outlet opening (8),

the tube shoulder (6) facing away from the tube nipple (7)

Edge area (6.1) is connected to the tube jacket (2),

the tube nipple (7) projecting in a direction away from the tube jacket (2) over the surface of the tube shoulder (6),

the tube head with tube shoulder (6) and tube nipple (7) being designed as a one-piece molded part made of plastic,

the tube head and the tube casing (2) delimiting an interior of the tube (TI),

characterized in that

the closure cap (13) on its facing the jacket section (13.1)

Inner surface of the cover section (13.2) has at least one barrier layer (11).

2. tube packaging (1) according to claim 1, characterized in that the

Tube jacket (2) has a tube body layer (3) and at least one barrier layer (4), the barrier layer (4) on an inner surface of the tube body layer (3) facing the tube interior (TI) and / or on an outer surface facing away from the tube interior (TI) the tube body layer (3) is arranged.

3. tube packaging (1) according to claim 1 or 2, characterized in that the tube shoulder (6) on its, the tube interior (TI) facing away from the outer surface and / or on its, the tube interior (TI) facing at least one barrier layer (9) having.

4. tube packaging (1) according to one of claims 1 to 3, characterized in that the tube nipple (7) on its, the tube interior (TI) facing inner surface and / or on its, the tube interior (TI) facing away

Has at least one barrier layer (12) on the outer surface.

5. tube packaging (1) according to one of claims 1 to 4, characterized in that in the region of the tube nipple (7) arranged

Tamper-evident element (14) is provided, the

Tamper-evident element (14) the dispensing opening (8) opposite the

Completely separates the interior of the tube (TI).

6. tube packaging (1) according to claim 5, characterized in that the

Tamper-evident element (14) has at least one barrier layer (15) on its outer surface facing away from the tube interior (TI) and / or on its inner surface facing the tube interior (TI).

7. tube packaging (1) according to claim 5 or 6, characterized in that the tamper-evident element (14) is spaced from the tube shoulder (6), in particular adjacent to the dispensing opening (8).

8. tube packaging (1) according to any one of claims 5 to 7, characterized in that the tamper-evident element (14) has at least one predetermined breaking point.

9. tube packaging (1) according to claim 8, characterized in that the

Tamper-evident element (14) has at least one predetermined kink.

10. tube packaging (1) according to one of claims 1 to 9, characterized in that it is in the closure cap (13) is a screw cap or a hinged lid or a dispenser.

11. tube packaging (1) according to any one of claims 1 to 10, characterized in that

- The closure cap (13) is a screw closure cap, the screw closure cap having a jacket section (13.1) and a cover section (13.2),

- The tube nipple (7) has an external thread (7.1) on its outside and

- The screw cap in its jacket section (13.1) with the

External thread (7.1) of the tube nipple (7) corresponding internal thread

(13.3), the external thread (7.1) of the tube nipple (7) and the internal thread (13.3) of the closure cap (13) having a common axis of rotation (D).

12. Tube packaging according to one of claims 1 to 11, characterized in that the closure cap (13) facing the inside of the tube (TI)

Inner surface of the lid section (13.2) has an annular circumferential projection (5), the projection (5) the tube nipple (7) in the area of

Dispenses around the discharge opening (8).

13. Tube packaging according to claim 12, characterized in that the projection (5) has at least one barrier layer (10) on its inner surface facing the tube nipple (7) and / or on its outer surface facing away from the tube nipple (7).

14. tube packaging (1) according to any one of claims 2 to 13, characterized in that the tube body layer (3) of the tube jacket (2) made of plastic or metal, in particular from a plastic monomaterial or from a plastic laminate, aluminum or an aluminum alloy consists.

15. tube packaging (1) according to one of claims 1 to 14, characterized in that the barrier layer (11) of the closure cap (13), the barrier layer (4) of the tube jacket (2), the barrier layer (9) of the tube shoulder (6) , the barrier layer (12) of the tube nipple (7), the barrier layer (15) of the

Tamper-evident element (14) and the barrier layer (10) of the projection (5) independently of one another consist of aluminum, SiOx, SiNx, silicon, chromium, stainless steel or mixtures thereof.

16. tube packaging (1) according to any one of claims 1 to 14, characterized in that both the barrier layer (11) of the closure cap (13) and the

Barrier layer (4) of the tube jacket (2) and the barrier layer (9) of the tube shoulder (6) as well as the barrier layer (12) of the tube nipple (7) as well as the barrier layer (15) of the tamper-evident element (14) as well

Barrier layer (10) of the projection (5) either made of aluminum or SiOx or

SiNx or silicon or chrome or stainless steel or one of their mixtures.

17. Tube packaging according to one of claims 1 to 16, characterized in that the barrier layer (11) of the closure cap (13) and / or the barrier layer (4) of the tube jacket (2) and / or the barrier layer (9) of the tube shoulder (6 ) and / or the barrier layer (12) of the tube nipple (7) and / or the barrier layer (15) of the tamper-evident element (14) and / or the barrier layer (10) of the projection (5) are formed in two layers, the second Layer is an oxygen-absorbing layer.

18. Tube packaging according to one of claims 1 to 17, characterized in that the barrier layer (11) of the closure cap (13) and / or the barrier layer (4) of the tube jacket (2) and / or the barrier layer (9) of the tube shoulder (6 ) and / or the barrier layer (12) of the tube nipple (7) and / or the barrier layer (15) of the tamper-evident element (14) and / or the barrier layer (10) of the

Projection (5) by vapor deposition and / or by sputtering and / or by electrical deposition and / or by chemical deposition of the

Barrier layer (4, 9, 10, 11, 12, 15) forming material.

19. A method for producing a tube packaging (1) according to claims 1 to 18 with the steps

a) providing a tube jacket (2),

b) Manufacture of a tube head designed as a one-piece molded part made of plastic by injection molding or pressing plastic, the tube head consisting of a tube shoulder (6) and a tube nipple (7), the tube nipple (7) in a section facing away from the tube shoulder (6) has a dispensing opening (8),

c) firm connection of the tube jacket (2) and tube head to form a tube interior (TI) such that the tube nipple (7) projects in a direction away from the tube jacket (2) over the surface of the tube shoulder (6), the tube shoulder (6 ) in an edge area facing away from the tube nipple (7)

(6.1) is connected to the tube jacket (2),

d) providing a closure cap (13), the closure cap (13) having a jacket section (13.1) and a cover section (13.2),

e) applying at least one barrier layer (11) to the jacket section

(13.1) facing inner surface of the cover section (13.2) of the closure cap (13),

f) attaching the cap (13) to the tube head such that the

Closure cap (13) engages around the tube nipple (7) with at least a partial section of its jacket section (13.1).

20. The method according to claim 19, characterized in that the tube jacket (2) has a tube body layer (3) and at least one barrier layer (4), the barrier layer (4) on an inner surface of the tube body layer (3) facing the tube interior (TI). and / or on the inside of the tube (TI)

facing away from the outer surface of the tube body layer (3), the barrier layer by vapor deposition and / or by sputtering and / or by electrical deposition and / or by chemical deposition of the

Barrier layer forming material is formed.

21. The method according to claim 19 or 20, characterized in that the

Tube shoulder (6) has at least one barrier layer (9) on its outer surface facing away from the tube interior (TI) and / or on its inner surface facing the tube interior (TI), the barrier layer (9) by vapor deposition and / or by sputtering and / / or is formed by electrical deposition and / or by chemical deposition of the material forming the barrier layer (9).

22. The method according to any one of claims 19 to 21, characterized in that the tube nipple (7) has at least one barrier layer (12) on its inner surface facing the tube interior (TI) and / or on its outer surface facing away from the tube interior (TI) , wherein the barrier layer (12) is formed by vapor deposition and / or by sputtering and / or by electrical deposition and / or by chemical deposition of the material forming the barrier layer (12).

23. The method according to any one of claims 19 to 22, characterized in that the closure cap (13) on its inner surface of the lid portion (13.2) facing the tube interior (TI) has an annular circumferential projection (5), the projection (5) The tube nipple (7) surrounds flush in the area of the discharge opening (8), the projection (5) having at least one barrier layer (10) on its inner surface facing the tube nipple (7) and / or on its outer surface facing away from the tube interior (TI), wherein the barrier layer (10) by vapor deposition and / or by sputtering and / or by electrical deposition and / or by chemical deposition of the

Barrier layer (10) forming material is formed.

24. The method according to any one of claims 19 to 23, characterized in that after step f) the steps

g) filling the tube interior (TI) with a filling material and

h) closing the tube jacket (2) on its tube shoulder (6)

opposite end can be performed by welding its edge region.