WO2019068384A1

WO2019068384A1 - Packaging sleeve, packaging and method for producing a packaging

Info

Publication number: WO2019068384A1
Application number: PCT/EP2018/070664
Authority: WO
Inventors: Stefan Pelzer; Michael Schaaf
Original assignee: cSIG TECHNOLOGY AG
Priority date: 2017-10-04
Filing date: 2018-07-31
Publication date: 2019-04-11

Abstract

The invention relates to a packaging sleeve (10') made from a composite material for producing a packaging (15'), comprising: a lateral surface (17) with an inner partial region (17A) and two outer partial regions (17B), a base sealing surface (19) for joining the packaging sleeve (10') to the base element (23), a gable sealing surface (20) for joining the packaging sleeve (10') to a gable element (24), a longitudinal sleeve (11), which connects two edges of the composite material to a circumferential packaging sleeve (10'), and two virtual fold lines (18) which extend through the lateral surface (17), the base sealing surface (19) and the gable sealing surface (20) being arranged on opposite sides of the lateral surface (17) and wherein the packaging sleeve (10') is folded exclusively along the two virtual fold lines (18). In order to ensure the production of packagings, in particular multi-part packagings, having a complex geometry and being made from economical composite material, it is proposed that the packaging sleeve (10'), with the exception of the two virtual fold lines (18), has no further continuous fold lines in the region of the lateral surface (17). The invention further relates to a packaging (15) made of such a packaging sleeve (10') and to a method for producing a packaging (15') made of such a packaging sleeve (10').

Description

Packing jacket, packaging and method of making a package

The invention relates to a packing jacket made of a composite material for

Production of a packaging, comprising: a lateral surface with an inner partial region and with two outer partial regions, a bottom sealing surface for

Connecting the packaging jacket with a bottom element, a Giebelsiegelfläche for connecting the packing jacket with a gable element, a longitudinal seam which connects two edges of the composite material to a circumferential packing jacket, and two dummy fold lines extending through the lateral surface, wherein the

Bottom sealing surface and the gable sealing surface on opposite sides of the

Jacket surface are arranged, and wherein the packing jacket is folded exclusively along both Scheinfaltlinien.

The invention further relates to a packaging, comprising: a packing jacket made of a composite material with at least one layer of paper, paperboard or cardboard, with a bottom sealing surface and with a gable sealing surface, a bottom element, which is connected to the bottom sealing surface, in particular welded, and / or a Gable element which is connected to the Giebelsiegelfläche, in particular welded. It should preferably be a liquid-tight packaging for the protection of food, which have at least one liquid component.

Finally, the invention relates to a method for the production of a packaging, comprising the following steps: a) providing a packaging jacket of a composite material with at least one layer of paper, paperboard or cardboard, with a bottom sealing surface and with a gable sealing surface, b) providing a bottom element and / or a gable element, c) providing a

Welding device, in particular a friction welding device, d) folding back of the Packing mantle along both apparent fold lines, e) connecting the bottom element to the bottom sealing surface and / or connecting the gable element to the gable sealing surface, said joining being effected by a welding process, in particular by a friction welding process.

Packaging can be done in different ways and in different ways

Materials are produced. A widespread possibility of their production is to produce a blank from the packaging material, from which by folding and further steps first a packing jacket and finally a packaging is formed. This production method has the advantage, among other things, that the blanks and packing shells are very flat and can thus be stacked to save space. In this way, the blanks or packing shells can be produced at a different location than the folding and filling of the

Packing coats done. As a material composites are often used, for example, a composite of several thin layers of paper, cardboard or cardboard, plastic or metal, especially aluminum. Such packaging is widely used, especially in the food industry.

A first manufacturing step is often to produce a circulating packing jacket from a blank by folding and welding or gluing a seam. The folding of the blank is usually along embossed fold lines, which are summarized together with so-called dummy rows under the generic name Rillinien. The position of the fold lines corresponds to the position of the edges of the packaging to be produced from the packing jacket. This has the advantage that the blank and the packing jacket are folded only in places that are already folded in the finished packaging. For the purposes of the present application, a blank is therefore understood to mean a longitudinally and transversely cut sheet which has been cut to length in the transverse direction and defined in terms of its circumference ("sheet-like composite") ready for sale, with a packing coat as salable has to be regarded as finished if, if necessary, it is readily ready to be processed in a filling machine provided for this purpose after removal from an outer packaging intended for the transport of the place of manufacture to the place of use. This means, in particular, that the packing jacket no longer requires any mechanical intervention in order to ensure smooth processing of the packing jacket on the filling machine provided for this purpose. Conditioning to the ambient climate and / or (additional) sterilization (eg

By contrast, applicant's edge sterilization method) can optionally also be carried out on a finished packing jacket during or after transport to the intended place of use. In contrast, intermediate steps during forming and sealing during the production of the package jacket from a blank can not yet be referred to as a package jacket. A method for producing a packaging from a packing jacket is known, for example, from WO 2015/003852 A9 (there, in particular, FIGS. 1A to IE). The packaging described there has a

rectangular cross-sectional area and is generally cuboid.

In addition to packaging with quadrangular cross-sectional areas and packaging with cross-sectional areas are known which have more than four corners. From EP 0 936 150 Bl or US Pat. No. 6,042,527, for example, packages with octagonal are known

Cross-sectional area known. The shape of the packages is achieved by providing additional fold lines in the blanks.

However, a disadvantage of the folding of the described packing shells along the later packaging edges lies in the fact that only packages with angular cross-sectional areas can be produced. Alternative designs such as curves instead of the edges, however, are not possible.

One way to make packages with variable shape is to carry out the packaging in several parts. For this purpose, it is already known, in particular, for the packaging casing to be used only for the production of the lateral surface of the packaging use and make the floor and gable from separate components, which are connected to the outer surface. This allows a more variable shape of the floors and gables compared to floors and gables that are folded from the packing jacket. In addition, for the floor and for the gable other materials can be used, as for the lateral surface.

Such a packing jacket and a package made therefrom are known from US 4,471,882. There is a packing coat of a multilayer

Composite material with a bottom element made of plastic and with a

Gable element made of plastic. The connection of the three parts is carried out by high-frequency welding, ie by welding with high-frequency

electromagnetic waves. A disadvantage of this production method is that only certain materials are suitable for this process. For plastics, for example, only polar plastics, ie plastics with dipoles such as polyvinyl chloride (PVC) or polyamide (PA) are suitable, while "neutral" plastics (without dipoles) such as polyethylene (PE),

Separate polypropylene (PP) and polystyrene (PS). A further disadvantage of the packaging known from US Pat. No. 4,471,882 is that thicker and more expensive injection-molded parts made of plastics are used for the bottom element and the gable element in comparison to the laminate of the lateral surface.

Against this background, the invention has the object, the initially described and previously explained in more detail packing envelope and the above-described and previously explained packaging such that the production of packaging - especially multi-part packaging - is made possible with complex geometry of cost composite material.

This object is achieved with a packing jacket according to the preamble of

Characterized in that the packing jacket in the region of

Has lateral surface except the two dummy folds no further continuous fold lines. The packing jacket according to the invention consists of a composite material and serves to produce a packaging. In particular, the packing jacket may consist of a composite of several thin layers of paper, cardboard or cardboard, various plastics such as in particular polyethylenes, polypropylenes, and in special cases also barrier plastics such as PA, EVOH, and / or metal, in particular aluminum. The composite material of the packing jacket preferably has a layer of paper, cardboard or cardboard. This layer may be enriched with fillers such as titanium dioxide (TiO 2) or calcium carbonate (CaCO 3). The

Orientation of the fibers of this layer preferably runs along the central axis of the packing jacket (ie from the bottom area to the gable area). In other cases, however, it may also be preferred that the orientation of the fibers of this layer is orthogonal to the central axis of the packing jacket. Preferably, the packing jacket is in one piece. The packing jacket comprises a lateral surface with an inner partial region and with two outer partial regions, a bottom sealing surface for connecting the package jacket to a base element and a

Gable sealing surface for connecting the packing jacket with a gable element. The bottom sealing surface and the gable sealing surface are arranged on opposite sides of the lateral surface. Furthermore, the packing jacket comprises a longitudinal seam which connects two edges of the composite material to form a circumferential packing jacket. Through the longitudinal seam can be made from a flat - usually rectangular - blank a circumferentially closed, circumferential packing jacket. The longitudinal seam ensures a liquid-tight edge protection, by peeling and folding the inner jacket flap and subsequent

Welding or bonding with the outside arises. Another embodiment is the joining of the inner jacket flap with the outer by welding or gluing a sealing strip made of plastic. Due to the longitudinal seam such packing coats are also as longitudinal seam sealed

Packing coats referred. The packing jacket also has two apparent fold lines which run through the lateral surface. The dummy folds should - as well as conventional fold lines - facilitate the folding of the packing jacket. Fake fold lines can be generated by material weaknesses. Because the

Packaging should be liquid-tight, are used as material weakenings no perforations, but so-called "creases." Creases are

linear material displacements, with the pressing tools in the

Composite material to be embossed. The packing sheath is folded along both sham fold lines.

According to the invention, it is provided that the packing jacket in the region of

Has lateral surface except the two dummy folds no further continuous fold lines. In other words, the packing jacket in the area of the lateral surface apart from the two dummy folds no further

have continuous fold lines. Folding lines which extend only through a part or a section of the lateral surface may, on the other hand, be provided, which may, for example, be short fold lines for shaping, which may be used are spaced from the edges of the lateral surface or act around so-called "auxiliary edge stumps". Preferably, the packing jacket has no further fold lines except for the two dummy fold lines. By dispensing with fold lines, packaging can be used with

curved, edge-free surfaces are generated.

The invention is therefore based on the idea not to fold the packaging casing along fold lines which are the edges of the produced from the packing jacket

Form packaging. Instead, real fold lines are dispensed with in the area of the entire lateral surface and the packing jacket is intended exclusively along

However, folds along the pseudo-fold lines are thus made only on the packaging mantle, but not on the packaging produced therefrom

Design of the packaging geometry and in particular allows the production of packaging with curved, edge-free packaging. By "continuous" Fold lines are understood to be fold lines that completely traverse the lateral surface, for example from the bottom region to the gable region. Preferably, the packing jacket in the area of the entire lateral surface except the two

Apparent fold lines no further fold lines.

According to one embodiment of the packing jacket it is provided that the

Packing sheath is folded flat along both fake fold lines at an angle of about 180 °. The packing jacket is folded flat around the dummy grooves in such a way that a front portion and a rear portion of the

Packing mantle on each other. The folding by an angle of about 180 ° allows particularly flat packing coats. This allows a space-saving

Stacking of packing coats, which facilitates, for example, the transport. In this way, the packing shells can be produced at a different location than the filling and production of the packaging takes place. Preferably, the

Packing jacket folded along both Scheinfaltlinien outward.

A further education of the packing mantle provides that the two

Apparent fold lines run parallel to each other. The two apparent fold lines are straight and preferably run parallel to one another. The parallel arrangement has the advantage that the Scheinfaltlinien can be particularly easily imprinted in the composite material. A further advantage of the parallel arrangement of the dummy fold lines is that the packing jacket can be produced from a rectangular blank and no more complicated geometries (for example trapezoidal blanks) are required.

A further embodiment of the package jacket provides that the dummy fold lines are embossed from the inside to the outside of the package jacket and / or from the outside to the inside of the package jacket. Depending on the position and folding direction of a folding line, a change in the embossing direction can lead to better folding results. In addition, in this way at the same time or in a production step with the Scheinfaltlinien - not intended for folding - outwardly directed and projecting lines are generated, for example, serve to better grip the packaging and secure. The packing jacket may be provided with a combination of two embossing directions. In a further embodiment of the package mantle it is proposed that the

Composite material of the packing jacket has a thickness or a basis weight in the range between 100 g / m ² and 600 g / m ² , in particular between 150 g / m ² and 550 g / m ² , very particularly between 200 g / m ² and 500 g / m ² . Alternatively, it is proposed that the composite material of the packing jacket has a thickness or a basis weight in the range between 110 g / m ² and 400 g / m ² , in particular between 150 g / m ² and 250 g / m ² . A strength or a basis weight in these areas has proven to be a good compromise between low cost and low weight (as thin as possible composite material) and sufficient mechanical properties (as thick as possible composite material), depending on the package size or the filling product and volume.

A further embodiment of the packing jacket provides that the composite material has at least one layer of paper, paperboard or cardboard, which is covered at the edge of the longitudinal seam extending inside the packing jacket. The cover of the paper layer or cardboard layer has the purpose of a contact between the

Contents of the packaging and this layer to avoid. This serves, on the one hand, to prevent leakage of liquid through the paper layer which is not liquid-tight and, on the other hand, to protect the contents of the package from contamination or contamination by the paper or paperboard layer (for example fibers of the pulp).

For this embodiment, it is further proposed that the layer of paper or paperboard is covered by a sealing strip and / or by flipping the composite material in the region of the longitudinal seam. One way of covering is the

Attachment of a separate sealing strip. The sealing strip may for example be made of the same material as the innermost layer of the composite material and glued or welded to this camp. Another possibility of the cover is to fold or fold over the composite material in the region of the longitudinal seam. In this way, no longer all layers, but only the innermost layer of the composite material appear at the edge of the longitudinal seam extending inside the package jacket. However, the innermost layer must anyway be made of a material that is suitable for contact with the contents of the packaging.

In a further embodiment of the packing jacket, the composite material is peeled in the region of the longitudinal seam. A "shelled" composite material is understood as meaning a composite material which has fewer layers in the peeled area than in the remaining areas

Overlaps of multiple layers of material the advantage of a less strong

Increase in thickness. Therefore, the use of peeled is particularly advantageous

Composite material, when the composite material is folded or folded - for example, in the region of the longitudinal seam.

According to a further embodiment of the packing jacket it is provided that the packing casing is open both in the region of the bottom sealing surface and in the area of the gable sealing surface. In other words, the packing jacket has two openings, wherein an opening is arranged in the region of the later floor and wherein the other opening is arranged in the region of the later gable. Through the two opposite openings of the packing jacket can be folded particularly simple, whereby the shape of a tube or a sleeve

One advantage of double-sided open packaging is the variable design possibilities of the floors and gables.

According to a further embodiment of the packing jacket it is provided that the bottom sealing surface is separated from the lateral surface by a bottom folding line and / or that the gable sealing surface is separated from the lateral surface by a gable folding line. By the sealing surfaces separated by fold lines from the lateral surface are the two sealing surfaces in the manufacture of the packaging,

especially during welding, are inclined along a defined line relative to the lateral surface. Preferably, the packing jacket in the region of the bottom sealing surface - ie outside the bottom fold line - and / or in the region of the Giebelsiegelfläche - ie outside the Giebelfaltlinie - except the two

Fake fold lines no further continuous fold lines. Most preferably, the packing jacket has no further fold lines in these areas except for the two dummy fold lines.

A further embodiment of the packing jacket provides that the fold lines must not intersect, but maintain a minimum distance in the range between 0.1 mm and 6.0 mm, in particular between 0.8 mm and 2.5 mm to each other. In other words, the fold lines are approaching, but not real

Form intersections. The cutting of two converging fold lines can be prevented, for example, by having at least one of these

Folding lines in the area of the actual intersection is interrupted. This design is based on the idea that intersecting fold lines represent a particularly high load on the packaging jacket, which increases during folding

Damage to the packing jacket may result. This in turn can lead to leaky packaging. By maintaining a "safety margin" between fold lines, these loads can be reduced.

After a further embodiment of the packing jacket is finally provided that the longitudinal seam connects the two outer portions of the lateral surface with each other. After this training, the longitudinal seam should thus be arranged in the region of the outer lateral surfaces and divide them into two subregions. This has the advantage that the inner region of the lateral surface - which forms the front surface of the packaging, which the customer pays the most attention to - can be made seamless. The two outer regions of the lateral surface can be of the same width (central longitudinal seam) or of different width (laterally offset longitudinal seam). The object described above is also achieved by a packaging comprising: a packing jacket made of a composite material with at least one layer of paper, paperboard or cardboard, with a bottom sealing surface and with a

Giebelsiegelfläche, a bottom member which is connected to the bottom sealing surface, in particular welded, and a gable element, which is connected to the Giebelsiegelfläche, in particular welded. The packaging is through

characterized in that the bottom element and / or the gable element a

Composite material, in particular a composite material having at least one layer of paper, cardboard or cardboard. The composite material - or at least some layers thereof - may be made of sheet material, for example.

So it's foreseen, not just the wrapper, but also that

Floor element and / or the gable element of a composite material - ie a multilayer material - produce. Preferably, also the composite material of the bottom element and / or the gable element has at least one layer of paper, cardboard or cardboard. Most preferably, the same composite material is used for the bottom element and / or the gable element as for the packing jacket; in this respect, reference is made to the above statements. At least one plastic layer is provided on each side of the paper layer or cardboard layer. Optionally, an aluminum layer may also be provided. The use of such a laminate for the floor element and / or the

Gable element has the advantage of lower cost, lower weight and higher elasticity than solid plastic parts (e.g., injection molded parts). Compared to a laminate consisting exclusively of a plastic film or of several plastic films, the use of an additional layer of paper, paperboard or cardboard has the advantage of increasing the stiffness of the laminate.

According to one embodiment of the packaging, it is provided that the packaging has a packing jacket according to one of claims 1 to 13. When the package is made from any of the packaging shells described above, many occur Characteristics and advantages of the packing jacket even when packaging. A particular advantage is that the packaging in the region of the lateral surface has no angular folding edges, although it was made from a packing jacket, which is folded in two places. This is achieved in that the packing jacket during the production of the packaging along the two Scheinfaltlinien

"Folded back" is, so that adjoin the pseudo-fold portions of the lateral surface in each case again approximately steadily merge into each other

Apparent fold lines do not form the edges of the packaging, but are - barely visible - in the outer surface of the packaging. Instead of straight, angular folding edges so a package with an individually shaped, for example, curved lateral surface is to be achieved. The packaging preferably has a volume in the range between 50 ml and 4000 ml, in particular between 75 ml and 2500 ml, preferably between 100 ml and 2000 ml. Preferably, the packaging is at least two parts, more preferably even three parts, wherein applied parts, such as opening or drinking aids are not included. The shell-forming part of the packaging is in one piece. The package may be supplemented by other elements such as a pouring element (e.g., a plastic flip-top or turn-down closure) or a drinking aid (e.g., a straw).

In a further embodiment of the packaging it is provided that the bottom element has a bottom region and an edge region, wherein the edge region is directed inward or outward. Alternatively or additionally, it is provided that the gable element has a gable area and an edge area, wherein the edge area is directed inwards or outwards. The gable area and the floor area serve to form the gable or bottom of the package; these parts are therefore usually visible from the outside. By contrast, the edge regions can serve to connect the bottom element or the gable element to the packing jacket. The edge areas can be directed to "inside" (ie to the middle of the packaging) or to "outside". An inward orientation, for example, optical advantages, since inward edge areas are barely visible from the outside. An orientation to the outside, however, has manufacturing advantages, as the Edge areas are easily accessible, which facilitates, for example, the welding. Outwardly directed edge areas may also be desired in the area of the floor, as they form a defined, circumferential footprint, which allows the packaging a stable state. The bottom element and / or the gable element may be formed from a flat, flat blank of a composite material, the edge regions being brought into their angled (inwardly or outwardly) angled position by folding. If the edge regions of the floor element and / or the gable element are directed inwards and have a layer of paper, cardboard or cardboard, it is preferred that the edge of the paper or cardboard layer running inside the packaging is covered. The

Cover can be done for example by a sealing strip and / or by folding the composite material. This is to prevent liquid in the Papierbzw. Cardboard or cardboard layer penetrates. In a further embodiment of the packaging, it is provided that the

Gable element has a screw cap. In the region of the gable element, a pouring opening may be provided. By providing a screw cap, the underlying pour spout can be resealed. This has hygienic benefits and can extend the shelf life of the contents of the package. Alternatively to a screw cap can also be a closure with a

be provided mechanical folding mechanism. Alternatively, or in addition to the screw cap or the snap closure, the gable element can

have overcoated hole (OCH) for piercing a straw.

In a further embodiment of the packaging is finally provided that the

Packaging has a round or oval cross-sectional area, in particular in the region of the packing jacket. After this training, the packing jacket should have a curved, but edge-free lateral surface. Packaging with a round or oval cross-sectional area fits comfortably in your hand and is visually appealing.

In addition, packages with a curved outer surface can be filled before filling be cleaned and sterilized more easily and effectively than packages with angled edges. In addition, in particular, packaging with a round or approximately round cross-sectional area has the advantage that, given a given volume, less material is required in comparison with parallelepipedic packaging, since the surface of the packaging is smaller.

Finally, the invention relates to a method for producing a packaging.

Due to the aforementioned disadvantages of high frequency welding process, there is a need for alternative methods of welding

Packagings. In this regard, WO 2006/048286 AI proposes, for example, to connect several parts of a tubular bag together by a friction welding process. Friction welding processes are touching welding processes and have the advantage that a wide variety of materials can be welded together. In particular, the weldability of plastics is not limited to (di) polar plastics. Furthermore, unlike inductive welding, weldability is not limited to electrically conductive materials. In addition, friction welding processes are characterized by low energy consumption. A disadvantage of friction welding, however, lies in the fact that the parts to be welded are moved under pressure relative to each other and are mechanically stressed. This can be particularly problematic with multilayer composite materials having a layer of paper, paperboard or cardboard and lead to detachment of the other layers of the composite material ("delamination") because of the strong compliance of paper, cardboard or paperboard In order to avoid wrinkling, it is proposed in WO 2006/048286 A1 that the materials to be welded be placed before the

Welding to stretch. A disadvantage of this approach, however, is that only certain - correspondingly stretchable - materials can be welded together. The application of the friction welding method is therefore limited in WO 2006/048286 AI on plastic films or plastic laminates. A Stretching is hardly possible, especially with composite materials with a layer of paper, cardboard or cardboard (danger of fiber tears) or aluminum (risk of tearing).

Against this background, the invention is based on the Aufgrabe to design and further develop the method described above such that the

Manufacture of packaging - in particular multi-part packaging - is made possible with complex geometry of cost-effective composite material.

This object is achieved according to the invention by a method for producing a packaging, comprising the following steps: a) providing a

Packing jacket made of a composite material with at least one layer of paper, cardboard or cardboard with a bottom sealing surface and with a

Giebelsiegelfläche, b) providing a floor element and / or a

Gable element, wherein the bottom element and / or the gable element a

Composite material, in particular a composite material with at least one layer of paper or cardboard, c) providing a welding device, in particular a friction welding device, d) folding back the packing jacket along both apparent fold lines, and e) connecting the bottom element with the

Bottom seal surface and / or connecting the gable element with the Giebelsiegelfläche, said joining by a welding process, in particular by a

Friction welding process takes place. The joining in step e) can be carried out in particular by an ultrasonic friction welding process. Among them are procedures

understood, in which the frequency is in the range between 15 kHz and 50 kHz and in which the amplitude is in the range of 60 μιη or less.

Surprisingly, it has been found in experiments that also multilayer

Composite materials of different materials - in particular

Composite materials, which in addition to several plastic layers also have a layer of paper, cardboard or cardboard - can be connected to one another by friction welding. This is made possible for example by the fact that in any case the two are in direct contact with each other during welding Material layers have suitable properties. Preferably, these two layers are layers of plastic. PE (polyethylene), HDPE (high density polyethylene), LDPE (low density polyethylene) can be used in particular for the layers to be welded together. Particularly good welding results were achieved when a packing jacket is provided in step a) whose paper layer or cardboard layer has a

Moisture content in the range between 4% and 15%, in particular between 5% and 12%, particularly preferably between 6% and 9% (each

Mass fraction). Very good welding results have also been achieved when the direction of relative movement in friction welding is approximately the orientation of the fibers in the

Paper or cardboard layer in the packing jacket corresponds. This can be achieved, for example, by aligning the fibers of the packing jacket along its central axis (that is, from the bottom region to the gable region) and at least one of the welding tools (for example a sonotrode) in any event also being moved back and forth substantially in this direction (main vibration direction). This can be explained by the fact that the composite material in the direction of the fibers has increased rigidity and reduced damping.

The method may be supplemented by the following step, which may be performed after step d) and before step e): eO) positioning the packing jacket and / or the bottom element and / or the gable element relative to the welding device. For positioning, certain easily (e.g., mechanically) recognizable areas of the package sheath may be utilized, such as the longitudinal seam and / or a sham fold line.

According to one embodiment of the method, it is provided that in step a) a

Packing jacket according to one of claims 1 to 13 is provided. When the package is made from any of the package shells described above, many of the features and benefits of the package sheath also occur in the package. A particular advantage is that the packaging in the field of

Outer surface has no angular folding edges, although they are made of a Packing jacket was produced, which is folded in two places. This is achieved by folding the packaging jacket along the two dummy fold lines during the production of the packaging, so that the partial regions of the lateral surface adjoining the dummy fold lines again merge approximately continuously into each other, so that the dummy fold lines do not form the edges of the packaging but instead Instead of straight, angular folding edges, a package with an individually shaped, for example, curved lateral surface is to be achieved, The curved but edge-free lateral surfaces allow a good weldability, since the

Welding tools can be easily adapted to the shell geometry.

A further embodiment of the method provides that the friction welding device has an anvil and a sonotrode. The materials to be welded should be compressed between the anvil and the sonotrode.

According to a further embodiment of the method, it is provided that the anvil has a contact surface with an anvil angle in the range between 5 ° and 15 °, in particular between 6 ° and 10 °. Alternatively or additionally, it is provided that the sonotrode has a contact surface with a sonotrode angle in the range between 5 ° and 15 °, in particular between 6 ° and 10 °. By the anvil and / or the sonotrode having an angled contact surface, the

Welding tools are easier to be brought to the surfaces to be welded. A previous expansion of the surfaces to be welded is therefore not required. Instead, for example, folding lines can be provided which allow an inclination of the surfaces to be welded, and thus an adaptation to the inclined welding tools.

According to a further embodiment of the method, it is provided that

in step e) the sonotrode vibrates while the anvil is stationary. The vibration of the sonotrode takes place during the welding process in at least one direction; but it can also be done in several directions. According to a further embodiment of the method, it is finally provided that in step e) in the region of the bottom sealing surface and / or in the region of

Giebelsiegelfläche a completely circumferential weld is generated. Due to the completely circumferential weld, an optimal sealing of the packaging along its entire circumference is achieved. Preferably, the welding tools (esp. Anvil, sonotrode) are shaped such that they can cover the regions to be welded (bottom sealing surface and / or gable sealing surface) in the region of the entire weld seam to be produced, so that the weld seam can be produced in one step. This can be done with a round packaging

Cross-sectional area, for example, be achieved in that the internally disposed welding tool (eg the sonotrode) is approximately cylindrically shaped and has a circumferential - outwardly directed - contact surface and that the externally arranged welding tool (eg the anvil) is shaped approximately annular and a circumferential - after directed inward - has contact surface.

The invention will now be described with reference to a preferred one

Embodiment illustrative drawing explained in more detail. In the drawing show:

Fig. 1A: a known from the prior art blank for folding a

Pack casing,

Fig. 1B: a known from the prior art packing jacket, which is formed from the blank shown in Fig. 1A, in the flat folded

State,

FIG. 1C: the packing jacket from FIG. 1B in the unfolded state, FIG.

Fig. 1D: the packing jacket of Fig. IC with pre-folded bottom and

Gables, Fig. IE: a prior art package formed from the blank shown in Fig. 1A after welding; Fig. 1F: the package of Fig. IE with applied ears;

Fig. 2A: a blank for the production of an inventive

Fig. 2B: a packing jacket according to the invention, which consists of the in Fig. 2A

formed blank is formed in your front view,

2C: the packing jacket from FIG. 2B in a rear view, FIG. 2D: the packing jacket from FIG. 2B and FIG. 2C in the unfolded state, FIG.

2E: the packing jacket of FIG. 2D with bottom element and gable element, FIG.

FIG. 2F shows a packaging according to the invention, which is shown in FIG. 2E

Packing jacket is formed,

3A shows the gable portion of the package shown in Fig. 2F in cross-section,

3B: the bottom portion of the package shown in Fig. 2F in cross-section,

4A shows a step of a method according to the invention for the production of the

Gable area of the packaging shown in Fig. 2F,

4B: a further step of a method according to the invention for

Manufacturing the gable area of the package shown in Fig. 2F, 4C shows a step of a method according to the invention for producing the bottom region of the packaging shown in FIG. 2F, and FIG

4D: a further step of a method according to the invention for

Production of the bottom portion of the package shown in Fig. 2F.

In Fig. 1A, a known from the prior art blank 1 is shown, from which a packing jacket can be formed. The blank 1 may comprise a plurality of layers of different materials, for example paper, cardboard, plastic or metal, in particular aluminum. The blank 1 has a plurality of fold lines 2, which are intended to facilitate the folding of the blank 1 and divide the blank 1 into several areas. The blank 1 may be divided into a first side surface 3, a second side surface 4, a front surface 5, a rear surface 6, a sealing surface 7, bottom surfaces 8 and gable surfaces 9. From the blank 1, a packing jacket can be formed by the blank 1 is folded 5 so that the sealing surface 7 connected to the front surface 5, in particular can be welded.

FIG. 1B shows a packing jacket 10 known from the prior art in the flat folded state. The regions of the packing jacket already described in connection with FIG. 1A are provided with corresponding reference symbols in FIG. 1B. The packing jacket 10 is formed from the blank 1 shown in FIG. 1A. For this purpose, the blank 1 has been folded such that the sealing surface 7 and the front surface 5 are arranged overlapping, so that the two surfaces can be welded together flat. The result is a longitudinal seam 11. In Fig. 1B, the packing jacket 10 is shown in a flat folded state. In this state, one side surface 4 (hidden in Fig. 1B) lies below the front surface 5 while the other side surface 3 lies on the rear surface 6 (obscured in Fig. 1B). In the flat folded state, several

Packungsmäntel 10 are stacked particularly space-saving. Therefore, the packing shells 10 are frequently stacked at the place of manufacture and transported in stacks to the place of filling. Only then are the packing shells 10 - usually already within a filling machine - stacked and unfolded to be filled with content, such as food. The

Filling can be done under aseptic conditions. In Fig. IC the packing jacket 10 of Fig. 1B is shown in the unfolded state. Here again, the regions of the packing jacket 10 already described in connection with FIG. 1A or FIG. 1B are provided with corresponding reference symbols. The unfolded state is understood to mean a configuration in which an angle of approximately 90 ° is formed between the two respectively adjacent surfaces 3, 4, 5, 6, so that the packing jacket 10 has one, depending on the shape of these surfaces

having square or rectangular cross section. Accordingly, the opposite side surfaces 3, 4 are arranged parallel to each other. The same applies to the front surface 5 and the rear surface 6.

FIG. 1D shows the packaging casing 10 from FIG. 1C in the pre-folded state, that is to say in a state in which the fold lines 2 have been prefolded both in the region of the bottom surfaces 8 and in the region of the gable surfaces 9. Those areas of the bottom surfaces 8 and the gable surfaces 9, which adjoin the front surface 5 and the rear surface 6, are also referred to as rectangular surfaces 12. The rectangular surfaces 12 are folded inwards during the pre-folding and later form the bottom or the gable of the packaging. Those areas of the bottom surfaces 8 and the gable surfaces 9, which adjoin the side surfaces 3, 4, however, are referred to as triangular surfaces 13. The triangular surfaces 13 are folded outwardly during the pre-folding and form protruding areas of excess material, which are also referred to as "ears" 14 and are applied to the packaging in a later manufacturing step, for example by adhesive bonding.

In Fig. IE, a prior art package 15 formed from the blank shown in Fig. 1A is shown. The packaging 15 is shown after welding, ie in the filled and closed state. In the area of the bottom surfaces 8 and 9 in the area of the gable surfaces arises after closing a fin seam 16. In Fig. IE, the ears 14 and the fin seam 16 are off. Both the ears 14 and the fin seam 16 will be in a later

Manufacturing step, such as by welding process - in particular comprising an activation and pressing - created.

FIG. 1F shows the packaging 15 of FIG. IE with ears 14 applied. In addition, the fin seams 16 are also applied to the packaging 15. The upper, arranged in the region of the gable surface 9 ears 14 are folded down and flat against the two side surfaces 3, 4 applied. Preferably, the upper ears 14 are glued or welded to the two side surfaces 3, 4. The lower, in the area of

Floor surface 8 arranged ears 14 are also folded down, but applied flat to the bottom of the package 15, which is formed by two rectangular surfaces 12 of the bottom surface 8. Preferably, the lower ears 14 with the package 15 - in particular with the rectangular surfaces 12 - glued or welded.

Fig. 2A shows a blank for the production of an inventive

Packing jacket 10 '. The already in connection with Fig. 1A to Fig. 1F

described areas of the blank are shown in Fig. 2A with corresponding

Provided with reference numerals. A difference from the blank 1 of FIG. 1A is that the two side surfaces 3, 4, the front surface 5 and the rear surface 6 are combined to form a single lateral surface 17. The lateral surface 17 extends - apart from the sealing surface 7 - over the entire width of the blank. Another difference is that the blank 1 'has two dummy fold lines 18 in the area of the lateral surface 17. The two dummy fold lines 18 are straight and run parallel to each other. By the dummy fold lines 18, the lateral surface 17 is divided into an inner portion 17A and into two outer portions 17B. The inner portion 17A is located between the two dummy fold lines 18 and the outer portions 17B are adjacent to or outside the two dummy fold lines 18. In contrast to the blank 1 of FIG. 1A, the blank 1 'of FIG. 2A has no bottom surfaces 8 and none Gable surfaces 9 provided as the bottom and the Gable is formed from separate parts. This will be described later in detail. Instead, the blank of Fig. 2A has a lower portion thereof

Bottom seal surface 19 and in its upper region a Giebelsiegelfläche 20. The bottom sealing surface 19 is separated by a bottom fold line 21 from the adjacent region of the lateral surface 17 and the Giebelsiegelfläche 20 is through a

Giebelfaltlinie 22 separated from the adjacent region of the lateral surface 17. The bottom fold line 21 and the gable fold line 22 run parallel to one another. The

Apparent fold lines 18, the bottom fold line 21 and the gable folding line 22 do not intersect, but maintain a minimum distance in the range between 0.1 mm and 3.0 mm, in particular between 0.8 mm and 2.5 mm to each other.

FIG. 2B shows a packaging jacket 10 'according to the invention, which is formed from the blank shown in FIG. 2A, in its front view. The already in the

Portions of the packing jacket described in connection with FIGS. 1A to 2A are provided with corresponding reference numerals in FIG. 2B. The packaging jacket 10 'has been formed from the blank 1' by two steps. First, the blank 1 'is folded along the two dummy fold lines 18. Subsequently, the two partial areas 17A, 17B of the lateral surface 17 in the region of the sealing surface 7 are connected to one another, in particular welded, whereby a longitudinal seam 11 (hidden in FIG. 2B) is produced. The packing jacket 1 'thus has a circumferential, circumferentially closed structure with an opening in the region of the bottom sealing surface 19 and with an opening in the region of the gable sealing surface 20. In the front view, the inner portion 17A of the lateral surface 17 is visible, the two sides of the dummy fold lines 18th is limited. The remaining partial areas 17B of the lateral surface 17 are concealed on the rear side of the package jacket 10 'and therefore in FIG. 2B.

FIG. 2C shows the packing jacket 10 'from FIG. 2B in a rear view. The areas of the already described in connection with FIGS. 1A to 2B

Packing mantels are provided in Fig. 2C with corresponding reference numerals. In the rear view, the two outer portions 17 B of the lateral surface 17 are visible, which are interconnected by the longitudinal seam 11 and the two sides of the Apparent fold lines 18 is limited. The inner portion 17A of the lateral surface 17 is concealed on the front side of the packing jacket 10 'and therefore in Fig. 2C.

FIG. 2D shows the packing jacket from FIG. 2B and FIG. 2C in the unfolded state. The areas of the already described in connection with FIGS. 1A to 2C

Packing mantels are provided in Fig. 2D with corresponding reference numerals. The unfolded state is achieved by a folding back of the packing jacket along the dummy fold lines 18 passing through the lateral surface 17. The refolding takes place by about 90 °. The refolding along the Scheinfaltlinien 18 has the consequence that the two adjoining the Scheinfaltlinie 18 subregions 17A, 17B of the lateral surface 17 are no longer flat, but smoothly merge into each other. The packing jacket 10 'is therefore folded along the apparent fold lines 18 only in its flat state (FIGS. 2B, 2C); In the unfolded state (FIG. 2D), the packing jacket 10 '(as well as the packaging to be produced therefrom) is no longer folded along the apparent fold lines 18. Therefore, the term "sham" fold lines 18. In the embodiment shown in Fig. 2D, the package sheath 10 'has an approximately round cross-sectional area, but alternatively other cross-sectional areas are achievable, for example, oval cross-sectional areas 2D with bottom element 23 and gable element 24. The regions of the packing jacket already described in connection with FIGS. 1A to 2D are provided with corresponding reference symbols in FIG

encircling edge region 23B and the gable element 24 has a

Gable area 24A and your peripheral edge area 24B. The bottom portion 23A and the gable portion 24A are approximately circular in shape; Alternatively, however, other forms are achievable, such as oval shapes. The edge portion 23B of the bottom member 23 and the edge portion 24B of the gable member 24 are approximately cylindrically shaped. The gable element 24 is equipped with a screw cap 25. FIG. 2F shows a packaging 15 'according to the invention, which is formed from the packing jacket 10' shown in FIG. 2E. The areas of the packaging already described in connection with FIGS. 1A to 2E are shown in FIG. 2E with corresponding ones

Provided with reference numerals. The package 15 'was also formed from the bottom element 23 and the gable element 24 in addition to the packing jacket 10', so it is a multi-part - more precisely: a three-part - package 15 '. Alternatively, the package could also be designed only in two parts, with dispensing with a separate floor element or on a separate gable element and the packing jacket itself forms the bottom or the gable. The three parts were connected to each other by first of the bottom element 23 and the gable element 24 from below or from above into the packing jacket 10 '.

have been inserted. Subsequently, the edge region 23B of the bottom element 23 has been connected to the bottom sealing surface 19 of the packing jacket 10 'and the edge region 24B of the gable element 24 is connected to the gable sealing surface 20 of the

Packing jacket 10 'been connected. The connections can be produced, for example, by welding methods, in particular by friction welding methods. Alternatively, the compounds can be generated by adhesive methods.

In Fig. 3A, the gable portion of the package 15 'shown in Fig. 2F is shown in cross section; On the contrary, Fig. 3B shows the bottom portion of that shown in Fig. 2F

Packaging in cross section. The areas of the packaging already described in connection with FIGS. 1A to 2F are shown in FIGS. 3A and 3B

provided with corresponding reference numerals. It can be clearly seen in cross-section that the edge region 23B of the bottom element 23 with the bottom sealing surface 19 of the

Packing jacket 10 'is connected and that the edge region 24B of the

Gable element 24 is connected to the Giebelsiegelfläche 20 of the packing jacket 10 '. In addition, it can be seen that the bottom fold line 21 and the gable folding line 22 are impressed or pressed into the material of the packing jacket 10 'so that the packing jacket 10' in the region of the bottom fold line 21 and the gable folding line 22 has a reduced thickness or thickness. In the example shown in FIGS. 3A and 3B, the bottom folding line 21 and the gable folding line 22 are outside in FIG Packing jacket 10 'has been embossed. Alternatively, it is also possible to

Bodenfaltlinie 21 and Giebelfaltlinie 22 from the inside into the packing jacket 10 'impress. Fig. 4A shows a step of a method according to the invention for manufacturing the gable area of the package shown in Fig. 2F; 4B shows a further step of a method according to the invention for producing the gable region of the packaging shown in FIG. 2F. The areas of the packaging already described in connection with FIGS. 1A to 3B are shown in FIGS. 4A and 4B

provided with corresponding reference numerals. The illustrated manufacturing step involves connecting the packing jacket 10 'to the gable element 24. For this purpose, a friction welding device 26 is provided which comprises an anvil 27 and a sonotrode 28. The anvil 27 has a contact surface 27A which is obliquely arranged with respect to a central axis M and has an anvil angle α in the range between 5 ° and 15 °, in particular between 6 ° and 10 °. The

Sonotrode 28 has a contact surface 28A, which is arranged obliquely with respect to a central axis M and has a sonotrode angle β in the range between 5 ° and 15 °, in particular between 6 ° and 10 °. The center axis M is the central axis of the package jacket 10 'or the later package 15', to which the two surfaces to be joined (gable sealing surface 20, edge region 24B) run parallel.

In Fig. 4A, the anvil 27 and sonotrode 28 are moved to their working positions (shown schematically by arrows). For this purpose, the anvil 27 is located inside the packing jacket 10 'in the region of the gable element 24 and

Sonotrode 28 is located outside of the packing jacket 10 'in the region of the gable element 24. The anvil 27 is preferably approximately cylindrically shaped and can be inserted through the (not yet closed) bottom region of the packing jacket 10' in the packing jacket 10 '. The sonotrode 28, however, is preferably shaped approximately annular so that they completely around the

Packing jacket 10 'runs around. In Fig. 4B, a friction welding, at in which a relative movement is generated between the two surfaces to be welded; in this case between the edge region 24B of the gable element 24 and the gable sealing surface 20 of the packing jacket 10 '. To accomplish this, the two surfaces to be welded are compressed by the contact surface 27A of the anvil 27 and the contact surface 28A of the sonotrode 28. In the illustrated

For example, the sonotrode 28 vibrates in the axial direction, ie in the direction of the central axis M, while the anvil 27 is stationary (vibration schematically represented by a double arrow). In this way, a relative movement between the two surfaces to be welded is generated, ie between the edge region 24B of the

Gable element 24 and the Giebelsiegelfläche 20 of the packing jacket 10 '. As a result of the friction, the contacting plastics heat up, become viscous and form a weld 29.

Fig. 4C shows a step of a method according to the invention for producing the bottom portion of the package shown in Fig. 2F; Fig. 4D shows another one

Step of a method according to the invention for producing the bottom region of the packaging shown in FIG. 2F. The areas of the packaging already described in connection with FIGS. 1A to 4B are shown in FIGS. 4C and 4D

provided with corresponding reference numerals. The illustrated production step involves connecting the package jacket 10 'to the bottom element 23. For this purpose, a friction welding device 26 is again provided, which comprises an anvil 27 and a sonotrode 28. The anvil 27 has a contact surface 27 A, which is arranged obliquely with respect to a central axis M and a

Anboßwinkel α in the range between 5 ° and 15 °, in particular between 6 ° and 10 °. The sonotrode 28 has a contact surface 28A, which is arranged obliquely with respect to a central axis M and has a sonotrode angle β in the range between 5 ° and 15 °, in particular between 6 ° and 10 °. The center axis M is the central axis of the package jacket 10 'or the subsequent package 15', to which the two surfaces to be joined (bottom sealing surface 19, edge region 23B) run parallel. In Fig. 4C, the anvil 27 and the sonotrode 28 are moved to their working positions (shown schematically by arrows). For this purpose, the anvil 27 is located outside the packing jacket 10 'in the region of the bottom element 23 and the sonotrode 28 is located below the bottom element 23. The sonotrode 28 is preferably approximately cylindrically shaped and can be inserted into the bottom element 23 from below. The anvil 27, on the other hand, is preferably annular in shape, so that it extends completely around the packing jacket 10 '. FIG. 4D is a friction welding process in which a relative movement is produced between the two surfaces to be welded; in this case between the edge region 23B of the bottom element 23 and the bottom sealing surface 19 of the packing jacket 10 '. To accomplish this, the two surfaces to be welded are compressed by the contact surface 27A of the anvil 27 and the contact surface 28A of the sonotrode 28. In the example shown, the sonotrode 28 vibrates in the axial direction, ie in the direction of the central axis M, while the anvil 27 is stationary (vibration schematically represented by a double arrow). In this way, a relative movement is generated between the two surfaces to be welded, ie between the edge region 23B of the bottom element 23 and the bottom sealing surface 19 of the packing jacket 10 '. As a result of the friction, the contacting plastics heat up, become viscous and form a weld 29.

LIST OF REFERENCE NUMBERS

1, 1 ': blank

2: fold line, crease line

3, 4: side surface

5: front surface

6: rear surface

7: sealing area

8: floor area

9: gable area

10, 10 ': packing jacket

11: longitudinal seam

12: rectangle area

13: Triangular area

14: ear, pack ear

15, 15 ': packaging

16: fin seam, stitch seam

17: lateral surface

17A, 17B: partial area (of the lateral surface 17)

18: Apparent fold line

19: bottom sealing surface

20: Gable sealing surface

21: bottom fold line

22: Gable fold line

23: floor element

23A: bottom portion (of the bottom member 23)

23B: edge portion (of the bottom member 23)

24: gable element

24A: gable area (of the gable element 24)

24B: edge area (of the gable element 24)

25: screw cap

26: Friction welding device, in particular friction welding tools

27: anvil

27A: contact area (of the anvil 27)

28: sonotrode

28A: contact surface (sonotrode 28)

29: Weld a: Anvil angle

ß: sonotrode angle

M: central axis

Claims

claims

Packing jacket (10 ') made of a composite material for producing a

Packaging (15 ') comprising:

- A lateral surface (17) with an inner portion (17A) and with two

outer portions (17B),

- A bottom sealing surface (19) for connecting the packing jacket (10 ') with

a floor element (23),

- A Giebelsiegelfläche (20) for connecting the packing jacket (10 ') with

a gable element (24),

- A longitudinal seam (11), the two edges of the composite material to a

circumferential packing jacket (10 ') connects, and

two dummy fold lines (18) which run through the lateral surface (17),

- Wherein the bottom sealing surface (19) and the Giebelsiegelfläche (20) on

opposite sides of the lateral surface (17) are arranged, and

- wherein the packing jacket (10 ') is folded along both apparent fold lines (18),

characterized in that

the packing jacket (10 ') in the region of the lateral surface (17) has no further continuous fold lines except for the two dummy folding lines (18).

Packing jacket according to claim 1,

characterized in that

the package jacket (10 ') is folded flat along both dummy fold lines (18) by an angle of approximately 180 ° each.

Packing jacket according to claim 1 or claim 2,

characterized in that the two dummy fold lines (18) run parallel to one another.

Packing jacket according to one of claims 1 to 3,

characterized in that

the dummy fold lines (18) are embossed from the inside to the outside of the package jacket (10 ') and / or from the outside to the inside of the package jacket (10').

Packing jacket according to one of claims 1 to 4,

characterized in that

the composite material of the packing jacket (10 ') has a thickness in the range between 100 g / m ² and 600 g / m ² , in particular between 150 g / m ² and 550 g / m ² , very particularly between 200 g / m ² and 500 g / m ² .

Packing jacket according to one of claims 1 to 4,

characterized in that

the composite material of the packing jacket (10 ') has a thickness in the range between 110 g / m ² and 400 g / m ² , in particular between 150 g / m ² and 250 g / m ² .

Packing jacket according to one of claims 1 to 6,

characterized in that

the composite material comprises at least one layer of paper, paperboard or cardboard which is covered at the edge of the longitudinal seam (11) running inside the packing jacket (10 ').

Packing jacket according to claim 7,

characterized in that

the layer of paper, cardboard or cardboard is covered by a sealing strip and / or by folding the composite material in the region of the longitudinal seam (11).

9. packing jacket according to one of claims 1 to 8,

characterized in that

the composite material in the region of the longitudinal seam (11) is peeled.

10. packing jacket according to one of claims 1 to 9,

characterized in that

the packing jacket (10 ') is open both in the region of the bottom sealing surface (19) and in the region of the gable sealing surface (20).

11. packing jacket according to one of claims 1 to 10,

characterized in that

the bottom sealing surface (19) is separated from the lateral surface (17) by a bottom folding line (21) and / or that the gable sealing surface (20) is separated by a bottom folding line (21)

Giebelfaltlinie (22) is separated from the lateral surface (17).

12. packing jacket according to claim 11,

characterized in that

the bottom fold line (21) and / or the gable folding line (22) do not intersect the dummy fold lines (18), but maintain a minimum distance in the range between 0.1 mm and 3.0 mm, in particular between 0.8 mm and 2.5 mm to one another ,

13. packing jacket according to one of claims 1 to 12,

characterized in that

the longitudinal seam (11) connects the two outer subregions (17B) of the lateral surface (17) to one another.

14. Packaging (15 ') comprising:

- A packing jacket (10 ') made of a composite material with at least one

Layer of paper, cardboard or cardboard, with a bottom sealing surface (19) and with a gable sealing surface (20), - A bottom element (23) which is connected to the bottom sealing surface (19), in particular welded, and / or

a gable element (24) connected to the gable sealing surface (20),

is welded in particular,

characterized in that

the bottom element (23) and / or the gable element (24) comprises a composite material, in particular a composite material with at least one layer of paper, cardboard or cardboard.

15. Packaging according to claim 14,

characterized in that

the packaging (15 ') has a packing jacket (10') according to one of claims 1 to 12.

16. Packaging according to claim 14 or claim 15,

characterized in that

the floor member (23) has a bottom portion (23A) and an edge portion (23B), the edge portion (23B) being directed inwardly or outwardly.

17. Packaging according to one of claims 14 to 16,

characterized in that

the gable element (24) has a gable area (24A) and an edge area (24B), the edge area (24B) being directed inwards or outwards.

18. Packaging according to one of claims 14 to 17,

characterized in that

the gable element (24) has a screw cap (25) and / or a

over-coated hole (OCH).

Packaging according to one of claims 14 to 18,

characterized in that the packaging (15 ') has a round or oval cross-sectional area, in particular in the region of the packing jacket (10').

20. A method of making a package (15 ') comprising the following

Steps:

a) providing a packing jacket (10 ') of a composite material with at least one layer of paper, paperboard or cardboard, with a bottom sealing surface (19) and with a gable sealing surface (20),

b) provision of a floor element (23) and / or a gable element (24), wherein the floor element (23) and / or the gable element (24) comprises a composite material, in particular a composite material with at least one layer of paper, paperboard or cardboard,

c) providing a welding device, in particular a

Friction welding device (26),

d) folding back the packing jacket (10 ') along both dummy fold lines (18), and

e) connecting the base element (23) to the bottom sealing surface (19) and / or connecting the gable element (24) to the gable sealing surface (20), wherein the connection is effected by a welding process, in particular by a friction welding process.

21. The method according to claim 20,

characterized in that

in step a) a packing jacket (10 ') according to one of claims 1 to 13 is provided.

22. The method according to claim 20 or claim 21,

characterized in that

the friction welding device (26) has an anvil (27) and a sonotrode (28).

23. The method according to any one of claims 20 to 22,

characterized in that

the anvil (27) has a contact surface (27A) with an anvil angle (a) in the range between 5 ° and 15 °, in particular between 6 ° and 10 °.

24. The method according to any one of claims 20 to 22,

characterized in that

the sonotrode (28) has a contact surface (28A) with a sonotrode angle (β) in the range between 5 ° and 15 °, in particular between 6 ° and 10 °.

25. The method according to any one of claims 20 to 24,

characterized in that

in step e) the sonotrode (28) vibrates while the anvil (27) is stationary.

Method according to one of claims 20 to 25,

characterized in that

in step e) in the region of the bottom sealing surface (19) and / or in the region of the gable sealing surface (20) a completely circumferential weld seam (29) is produced.