EP3439977B1 - Package sleeve, package and method for producing a package - Google Patents

Description

The invention relates to a packaging jacket made of a composite material for producing a package, comprising: a jacket surface, a longitudinal seam which connects two edges of the composite material to form a circumferential packaging jacket, and two dummy fold lines which run through the jacket surface, the packing jacket being folded along both dummy fold lines is.

The invention also relates to a package made of a composite material, the package being produced from a previously mentioned packaging jacket and the package being closed in the region of the bottom surfaces and in the region of the gable surfaces.

Finally, the invention relates to a method for producing a package from a package jacket made of a composite material.

Packs can be made in different ways and from different materials. A widespread possibility of their production consists in producing a blank from the packaging material, from which, by folding and further steps, first a packaging jacket and finally a packaging is produced which, when filled and closed, forms a package. This type of production has the advantage, among other things, that the blanks and packing sleeves are very flat and can therefore be stacked and transported in a space-saving manner. In this way, the blanks or packaging sleeves can be produced at one location and the packaging sleeves can be unfolded and filled at another location. Composites are often used as the material, for example a composite of several thin layers of paper, cardboard, plastic or metal, in particular aluminum. Such packs have been known for a long time and are particularly widespread in the food industry.

A first manufacturing step often consists in producing a circumferential packing jacket from a blank by folding and welding or gluing a seam. The blank is usually folded along embossed fold lines. The position of the fold lines corresponds to the position of the edges of the packaging to be produced from the packaging jacket. This has the advantage that the blank and the packaging jacket are only folded in places that are already folded in the finished packaging. A method for producing a packaging from a packaging jacket is, for example, from US Pat WO 2015/003852 A9 known (there in particular 1A to 1E ). The packaging described there has a rectangular cross-sectional area and is generally rectangular.

In addition to packaging with square cross-sectional areas, packaging with cross-sectional areas that have more than four corners are also known. From the EP 0 936 150 B1 or the US 6,042,527A For example, packaging with an octagonal cross-sectional area is known. The shape of the packaging is achieved through additional folding lines in the blanks.

However, a disadvantage of folding the packaging sleeves along the later packaging edges is that only packaging with angular cross-sectional areas can be produced. In addition, only packaging can be produced whose cross-sectional area is identical in the vertical direction of the packaging. However, alternative designs such as curves or free forms instead of the edges are not possible.

Packing sleeves and packs made therefrom are also from the EP 0 027 350 A1 known. The packaging jacket described there can be used to produce packaging whose cross-sectional area changes in the vertical direction (square cross-sectional areas on the gable and on the floor, octagonal cross-sectional area in between). However, this packaging also only has square cross-sectional areas. Alternative designs like For example, curves or free forms instead of the edges are also in the EP 0 027 350 A1 not described. The packaging jacket described there also does not consist of composite material, but of cardboard or corrugated cardboard. An inner bag made of plastic is proposed for filling with liquids.

Packing jackets and packaging made from them are also used in the GB 808,223 A described. There, a long cardboard material web is first provided with folding lines and then coated with a plastic layer (FIG. 6). After creating a longitudinal seam (FIG. 7), the material web is unfolded into a tube with a rectangular cross section (FIG. 8). The two side surfaces of the hose are then folded inwards, as a result of which the hose assumes a flat shape (FIG. 9). At certain intervals, transverse seams are produced, along which the hose can be folded and thus forms a stack (FIG. 10). By separating the tube in the area of the transverse seams, individual packing sleeves are obtained which are already closed on one side - by the transverse seam. A disadvantage of this procedure is that the packaging sleeves are already folded along six fold lines when they are separated from the tube, four of which fold lines form the edges of the subsequent packaging. These packaging sleeves are therefore only suitable for the production of packaging with rectangular cross-sectional areas.

Another packaging jacket and a packaging made from it are in the WO 97/32787 A2 described. With this packaging jacket, however, numerous fold lines are provided in the area of the jacket surface, some of which form the later edges of the packaging produced therefrom. These packaging sleeves are therefore only suitable for the production of packaging with square cross-sectional areas that remain the same in the vertical direction.

Against this background, the invention is based on the object of designing the packing jacket described at the beginning and explained in more detail above in such a way that the production of packs with a more complex geometry is made possible.

This object is first achieved in the case of a packaging jacket according to the preamble of patent claim 1 in that the packaging jacket has no further folding lines in the area of the jacket surface between the two false fold lines.

The "jacket surface" is the surface that is located between the gable surfaces of the gable area and the bottom surfaces of the bottom area of the packaging jacket. In conventional packs, the outer surface corresponds to the sum of the front and back and the two sides of a pack.

An alternative solution to the problem is solved in a packaging jacket according to the preamble of claim 2 in that the packaging jacket has no continuous folding lines in the area of the jacket surface between the two false folding lines and that at least one of the folding lines is interrupted, at least in sections, on the other side of the packaging jacket , curved and / or odd. "Continuous" fold lines are understood to mean fold lines that completely cross the lateral surface, for example from the bottom surfaces to the gable surfaces.

According to a further teaching of the invention according to the second alternative, the fold lines arranged on the rear partial surface are designed as fold line stumps. “Folded line stumps” are to be understood as meaning short sections of fold lines which are arranged directly adjacent to the floor area and / or gable area. This has advantages when folding, closing and sealing, for example in the manufacture of the base area on a mandrel, since no leaks through pockets or the like can occur in the corners.

In a further embodiment of the invention, the fold lines arranged on the rear partial surface are designed as split fold lines which preferably run essentially parallel to one another. In this way, the conventional edge areas with a substantially rectangular cross section "Disassembled" and replaced by polygonal cross-sections, which - especially with the back of a beverage pack that is intended for immediate consumption from the pack - allows ergonomic handling, since a "rounded" or "chamfered" back of the pack is very good for this enclosing gripping finger one hand.

For both alternatives, the packaging jacket according to the invention consists of a composite material and is used to produce a packaging suitable, for example, for beverages or other liquid foods. In particular, the packing jacket can consist of a composite of several thin layers of paper, cardboard, plastic and / or metal, in particular aluminum as an oxygen barrier. The packing jacket is preferably made in one piece. The packing jacket comprises a front continuous jacket surface which, in the case of a package produced therefrom, is curved forward and replaces the front surface and parts of the two side surfaces.

The packing jacket further comprises a longitudinal seam that connects two opposite ends of the composite material to form a circumferential packing jacket. By means of the longitudinal seam, a tube-like packing jacket which is closed in the circumferential direction can be produced from a flat - usually rectangular - blank. The composite material in the area of the longitudinal seam is preferably folded over and "peeled" in a manner known per se at the inner end of the blank and thus comprises fewer layers in this area than in the other areas. This also reliably seals the inner edge of the pack exposed to the product so that no moisture can penetrate the composite material.

The packing jacket has two openings, one in the area of the bottom surface and the other in the area of the gable surface. The longitudinal seam can be produced, for example, by gluing and / or welding. Because of the longitudinal seam, such packaging sleeves are also referred to as longitudinally sealed packing sleeves.

The packaging jacket according to the invention also has two 'false fold lines' which run through the jacket surface. These false fold lines - like conventional fold lines - should make it easier to fold the packaging jacket. These fold lines are referred to as 'false fold lines' because they are only used when the packaging jacket is folded flat, but are folded straight again when the packaging is to be filled. They can be produced by weakening the material, with so-called "creases" being used instead of perforations to maintain the liquid-tight state of the composite material. Creases are linear material displacements that are stamped or rolled into the composite material using punching or pressing tools. The two false fold lines are straight and run parallel to each other. The packaging jacket is folded along both false fold lines.

The invention is therefore based on the idea of not folding the packaging jacket along fold lines which form the edges of the packaging produced from the packaging jacket. The packaging jacket should therefore not be folded on fold lines which delimit the front surface, the rear surface and the two side surfaces of the package. Instead, there is no or no real folding lines in the area of the outer surface, and the packaging jacket should only be folded along these false folding lines, which later, however, do not form any edges of the packaging. This enables a free design of the package geometry and in particular allows the production of packages with almost any cross-section. In particular, it is possible to produce packings with curved surfaces without folded edges.

In a further embodiment of the packaging jacket, it is provided that a packaging jacket is formed from a blank by folding along both false fold lines at an angle of approximately 180 ° in each case. Folding at an angle of around 180 ° enables particularly flat packaging sleeves. This allows space-saving stacking of packaging sleeves, since these are close together lie and thus enable transport to the bottling plant with optimal use of the volume. In this way, the packaging sleeves can be produced at a different location than the filling and production of the finished packages. The packaging jacket is preferably folded outwards along both false fold lines.

A further embodiment of the packaging jacket is characterized by floor surfaces and gable surfaces which are arranged on opposite sides of the jacket surface. In the case of standing packaging, the gable surfaces are preferably arranged above the outer surface and the bottom surfaces below the outer surface.

For this embodiment of the packaging jacket, it is further proposed that the bottom surfaces and the gable surfaces each comprise two rectangular surfaces or gable surfaces and six triangular surfaces. Both the rectangular surfaces or gable surfaces and the triangular surfaces are preferably surrounded or delimited by fold lines. The rectangular surfaces serve to fold the bottom and the pediment of the packaging. The triangular surfaces serve to fold the excess composite material into protruding "ears", which are then placed on the sides of the pack.

For this purpose, it is further proposed that the false fold lines run through the point of contact of three adjacent triangular surfaces of the base surface and through the point of contact of three adjacent triangular surfaces of the gable surfaces. This arrangement of the false fold lines has the advantage that the false fold lines run through the bottom surface and the gable surface at a point at which these surfaces have to be folded anyway, for example to form "ears". The folding of the packaging jacket along the false folding lines therefore already leads to a "pre-folding" of the folding line running centrally through the "ears". Another advantage of the central arrangement of the false fold lines is that the false fold lines provide the space for the design of the edge areas of the Limit packaging as little as possible. It can be provided that two of the triangular surfaces of the base surface and / or the gable surface have approximately the same surface area. Alternatively, it can be provided that all three triangular surfaces of the base surface and / or the gable surface have different surface areas.

According to a further teaching of the invention, it is provided that the gable surface on the back of the packaging jacket has a shorter length than the length of the gable surface on the front of the packaging jacket. This design means that the front surface of the package has a lower height than the rear surface of the package. The pack thus has an inclined upper side which is inclined forward ("inclined gable pack").

In a further embodiment of the invention, the front of the packaging jacket has a front gable surface which is delimited from the jacket surface by an at least partially convexly curved front edge. In this way, the gable surface, which is bounded at the rear by the web seam, is increased towards the front and thus allows a pouring element with a larger diameter to be applied. In addition, the front gable surface (12G) can also have convex curved embossing lines in the upper corner regions, as a result of which the gable surface assumes a uniform shape reminiscent of an ellipse, in the center of which a pouring element can be arranged. For this purpose, a weakening zone is expediently provided in the center of the front gable surface, for example as a so-called 'over-coated hole'.

A further embodiment of the packaging jacket provides that the false fold lines on the outside of the packaging jacket and the folding lines on the back of the packaging jacket are grooved on the inside of the packaging jacket. This leads to simpler production in the creasing or embossing treatment of the composite material web before the individual blanks are cut. A combination of both creasing or embossing directions can also be provided.

The above-described object is also achieved by a packing made of a composite material, the packing being produced from a packing jacket according to one of claims 1 to 14, and the packing being closed in the area of the bottom surfaces and in the area of the gable surfaces. The pack is characterized in that the pack has no continuous straight folded edges in the area of the outer surface.

Since the package is made from one of the package shells described above, many properties and advantages of the package shell also occur in the package. A particular advantage is that the pack does not have any angular folded edges in the area of its lateral surface, although it was produced from a pack jacket that is folded in two places. This is achieved in that the packaging jacket is "folded back" along the two dummy fold lines during the production of the package, so that the subregions of the jacket surface adjoining the dummy fold lines again merge approximately continuously into one another. The false fold lines do not form the edges of the pack, but lie - barely visible - in the outer surface. Instead of straight, angled folded edges, a package with an individually shaped, for example curved, outer surface is to be achieved. In particular, it can be provided that the pack has no folded edges at all in the area of the outer surface. The pack is preferably made in one piece. In particular, the part of the package made from the composite material is preferably in one piece. This part of the pack can be supplemented with other elements, for example an opening, pouring and closing element (e.g. a hinged or twist lock made of plastic) or a drinking aid (e.g. a straw).

In one configuration of the pack, it is provided that the partial regions of the lateral surface adjoining the false fold lines are each arranged in an angular range between 160 ° and 200 °, in particular between 170 ° and 190 °, with one another. A particular advantage of this configuration is that the pack can be attached to its No folded edges on the sides and therefore no angular edges. This is achieved in that the packaging jacket is "folded back" along the two dummy fold lines during the production of the package, so that the partial regions of the jacket surface adjoining the dummy fold lines are arranged approximately in the same plane.

A further development of the pack is characterized by ears which are placed on the bottom surfaces in the lower region of the pack. Alternatively or additionally, the pack is characterized by ears which are placed on the lateral lateral surfaces in the upper area of the pack. In the lower area of the pack, the ears can be placed on the floor surface in different ways: One floor variant provides that the ears are folded under the rectangular surfaces of the base, which is slightly domed, and fastened there. Another floor variant, on the other hand, provides inward-facing ears which are arranged above the rectangular surfaces of the floor that are later folded in. The first variant has the advantage that the ears are pressed securely against the package due to the weight of the filled package, while the second variant offers a floor with a particularly smooth base. The arrangement of the upper ears on the lateral lateral surfaces has the advantage that a pouring element can be arranged on the top of the pack.

• Bereitstellen eines Packungsmantels nach einem der Ansprüche 1 bis 14 und
• Zurückfalten der Mantelfläche des Packungsmantels entlang von beiden Scheinfaltlinien.

The object described at the outset is also achieved by a method for producing a packing from a packing jacket made of a composite material. The method comprises at least the following steps:

• Providing a packaging jacket according to one of claims 1 to 14 and
• Fold back the outer surface of the packaging jacket along both false fold lines.

• Versiegeln des Packungsmantels im Bereich der Bodenflächen,
• Ggf. Applizieren eines Ausgießelementes,
• Befüllen der Packung und
• Versiegeln des Packungsmantels im Bereich der Giebelfläche.

The method can also include the following steps:

• Sealing the packing jacket in the area of the bottom surfaces,
• Possibly. Applying a pouring element,
• Filling the pack and
• Sealing the packaging jacket in the area of the gable surface.

As already described above, the method is also based on the idea of producing a package from a package jacket, the false fold edges of which do not form edges of the package produced from it. This is made possible by the fact that the packaging jacket folded along the false fold lines is "folded back", the folding along the false fold lines being reversed. The dummy fold lines provided in the packaging jacket therefore do not form an edge of the packaging. This allows the production of packs with a more complex geometry.

According to a further embodiment of the method, it is finally provided that the partial regions of the lateral surface adjoining the false fold lines after folding back again each lie in an angle range between 160 ° and 200 °, in particular between 170 ° and 190 °. The partial areas of the lateral surface should therefore be folded back so far along the false fold lines that the lateral surface has almost continuous transitions between the partial areas of the lateral surface.

Fig. 1A:

einen aus dem Stand der Technik bekannten Zuschnitt zum Falten eines Packungsmantels,

Fig. 1B:

einen aus dem Stand der Technik bekannten Packungsmantel, der aus dem in Fig. 1A gezeigten Zuschnitt gebildet ist, im flach gefalteten Zustand,

Fig. 1C:

den Packungsmantel aus Fig. 1B im aufgefalteten Zustand,

Fig. 1D:

den Packungsmantel aus Fig. 1C mit vorgefalteten Boden- und Giebelflächen,

Fig. 1E:

eine aus dem Stand der Technik bekannte Packung, die aus dem in Fig. 1A gezeigten Zuschnitt gebildet ist, nach dem Verschweißen,

Fig. 1F:

die Packung aus Fig. 1E mit angelegten Ohren,

Fig. 2A:

einen Zuschnitt zur Herstellung einer ersten Ausgestaltung eines erfindungsgemäßen Packungsmantels,

Fig. 2B:

einen Packungsmantel, der aus dem in Fig. 2A gezeigten Zuschnitt gebildet ist, in einer Vorderansicht,

Fig. 2C:

den Packungsmantel aus Fig. 2B in einer Rückansicht,

Fig. 2D:

den Packungsmantel aus den Fig. 2B und Fig. 2C im aufgefalteten Zustand,

Fig. 2E:

den Packungsmantel aus Fig. 2D mit nach außen vorgefalteten Boden- und Giebelflächen, in perspektivischer Ansicht von hinten,

Fig. 2F:

eine erste Ausgestaltung einer erfindungsgemäßen Packung, die aus dem in Fig. 2E gezeigten Packungsmantel gebildet ist, nach dem Verschließen und mit appliziertem Öffnungs-, Ausgieß- und Verschließelement, in perspektivischer Ansicht von vorne,

Fig. 2G:

die Packung aus Fig. 2F mit angelegten oberen Ohren und eingefalteten unteren Ohren,

Fig. 2E':

den Packungsmantel aus Fig. 2D mit nach innen vorgefalteten Bodenflächen und nach außen vorgefalteten Giebelflächen, in perspektivischer Ansicht von hinten,

Fig. 2F':

eine weitere Ausgestaltung einer erfindungsgemäßen Packung, die aus dem in Fig. 2E' gezeigten Packungsmantel gebildet ist, nach dem Verschließen und mit appliziertem Öffnungs-, Ausgieß- und Verschließelement, in perspektivischer Ansicht von vorne,

Fig. 2G':

die Packung aus Fig. 2F' mit angelegten oberen Ohren und angelegter unterer Flossennaht,

Fig. 3A:

einen Zuschnitt zur Herstellung einer zweiten Ausgestaltung eines erfindungsgemäßen Packungsmantels,

Fig. 3B:

einen Packungsmantels, der aus dem in Fig. 3A gezeigten Zuschnitt gebildet ist, in einer Vorderansicht,

Fig. 3C:

den Packungsmantel aus Fig. 3B in einer Rückansicht,

Fig. 3D:

den Packungsmantel aus den Fig. 3B und Fig. 3C im aufgefalteten Zustand,

Fig. 3E:

den Packungsmantel aus Fig. 3D mit nach außen vorgefalteten Boden- und Giebelflächen, in perspektivischer Ansicht von hinten,

Fig. 3F:

eine erste Ausgestaltung einer erfindungsgemäßen Packung, die aus dem in Fig. 3E gezeigten Packungsmantel gebildet ist, nach dem Verschließen und mit appliziertem Öffnungs-, Ausgieß- und Verschließelement, in perspektivischer Ansicht von vorne,

Fig. 3G:

die Packung aus Fig. 3F mit angelegten oberen Ohren und eingefalteten unteren Ohren,

Fig. 3E':

den Packungsmantel aus Fig. 3D mit nach innen vorgefalteten Bodenflächen und nach außen vorgefalteten Giebelflächen, in perspektivischer Ansicht von hinten,

Fig. 3F':

eine weitere Ausgestaltung einer erfindungsgemäßen Packung, die aus dem in Fig. 3E' gezeigten Packungsmantel gebildet ist, nach dem Verschließen und mit appliziertem Öffnungs-, Ausgieß- und Verschließelement, in perspektivischer Ansicht von vorne und

Fig. 3G':

die Packung aus Fig. 3F' mit angelegten oberen Ohren und angelegter unterer Flossennaht.

The invention is explained in more detail below with the aid of a drawing which represents only preferred exemplary embodiments. The drawing shows:

Fig. 1A:

a blank known from the prior art for folding a packaging jacket,

Fig. 1B:

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

1C:

the packing jacket Figure 1B when unfolded,

Fig. 1D:

the packing jacket 1C with pre-folded floor and gable surfaces,

Fig. 1E:

a package known from the prior art, which from the in Fig. 1A shown blank is formed after welding,

Fig. 1F:

the pack Figure 1E with big ears,

Fig. 2A:

1 shows a blank for producing a first embodiment of a packaging jacket according to the invention,

Fig. 2B:

a packing jacket made from the in Figure 2A shown blank is formed, in a front view,

Fig. 2C:

the packing jacket Figure 2B in a rear view,

Fig. 2D:

the packing jacket from the Figures 2B and 2C when unfolded,

Fig. 2E:

the packing jacket Figure 2D with floor and gable surfaces pre-folded outwards, in a perspective view from behind,

Fig. 2F:

a first embodiment of a pack according to the invention, which from the in Figure 2E Packing jacket shown is formed, according to Closing and with an applied opening, pouring and closing element, in a perspective view from the front,

Fig. 2G:

the pack Figure 2F with the upper ears on and the lower ears folded in,

Fig. 2E ':

the packing jacket Figure 2D with bottom surfaces pre-folded inwards and gable surfaces pre-folded outwards, in a perspective view from behind,

Fig. 2F ':

a further embodiment of a pack according to the invention, which from the in Fig. 2E ' shown packaging jacket is formed, after closing and with an applied opening, pouring and closing element, in a perspective view from the front,

Fig. 2G ':

the pack 2F ' with upper ears and lower fin seam,

Fig. 3A:

1 a blank for producing a second embodiment of a packaging jacket according to the invention,

3B:

a packaging jacket made from the in Figure 3A shown blank is formed, in a front view,

3C:

the packing jacket Figure 3B in a rear view,

Fig. 3D:

the packing jacket from the 3B and 3C when unfolded,

Fig. 3E:

the packing jacket Fig. 3D with floor and gable surfaces pre-folded outwards, in a perspective view from behind,

3F:

a first embodiment of a pack according to the invention, which from the in Figure 3E shown packaging jacket is formed, after closing and with an applied opening, pouring and closing element, in a perspective view from the front,

Fig. 3G:

the pack Figure 3F with the upper ears on and the lower ears folded in,

3E ':

the packing jacket Fig. 3D with bottom surfaces pre-folded inwards and gable surfaces pre-folded outwards, in a perspective view from behind,

3F ':

a further embodiment of a pack according to the invention, which from the in 3E ' Packing jacket shown is formed, after closing and with an applied opening, pouring and closing element, in a perspective view from the front and

Fig. 3G ':

the pack 3F ' with upper ears and lower fin seam.

In Fig. 1A a blank 1 known from the prior art is shown, from which a packing jacket can be formed. The blank 1 can comprise several 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 a plurality of areas. The blank 1 can 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, floor surfaces 8 and gable surfaces 9. A packing jacket can be formed from the blank 1 by folding the blank 1 in such a way that the sealing surface 7 can be connected, in particular welded, to the front surface 5.

Figure 1B shows a packing jacket 10 known from the prior art in the flat folded state. The already related to Fig. 1A Areas of the packaging jacket described are in Figure 1B provided with corresponding reference numerals. The packaging jacket 10 is from the in Fig. 1A shown blank 1 formed. For this purpose, the blank 1 was folded in such a way that the sealing surface 7 and the front surface 5 are arranged so as to overlap, so that the two surfaces can be welded to one another over the surface. The result is a longitudinal seam 11. In Figure 1B the packaging jacket 10 is shown in a flat folded state. In this state, a side surface 4 (in Figure 1B hidden) under the front surface 5 while the other side surface 3 on the rear surface 6 (in Figure 1B covered). In the flat folded state, a plurality of packaging sleeves 10 can be stacked and transported in a particularly space-saving manner. Therefore, the packaging sleeves 10 are often stacked at the place of manufacture and transported in batches to the place of filling. Only there are the packaging sleeves 10 separated and unfolded in order to be able to be filled with a product, for example with a drink.

In 1C is the packing jacket 10 out Figure 1B shown in the unfolded state. Again, they are already related to 1A or 1B Provided areas of the packaging jacket 10 described with corresponding reference numerals. The unfolded state is understood to mean a configuration in which an angle of approximately 90 ° is formed between the two adjacent surfaces 3, 4, 5, 6, so that the packing jacket 10 - depending on the shape of these surfaces - has a square or rectangular shape Has 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.

Figure 1D shows the packing jacket 10 1C in the pre-folded state, that is to say in a state in which the folding lines 2 have been pre-folded both in the region of the bottom surfaces 8 and in the region of the gable surfaces 9. Those areas of Floor 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 pack. Those areas of the bottom surfaces 8 and the gable surfaces 9 which adjoin the side surfaces 3, 4 are, on the other hand, referred to as triangular surfaces 13. The triangular surfaces 13 are folded outwards during the pre-folding and form protruding areas made of excess material, which are also referred to as "ears" 14 and are applied to the sides of the package in a later manufacturing step, for example by adhesive processes.

In Figure 1E is a package 15 known from the prior art, which from the in Fig. 1A shown blank is formed, shown. The pack 15 is shown after the welding, that is to say in the filled and closed state. In the area of the floor surfaces 8 and in the area of the gable surfaces 9, a fin seam 16 is formed after the closure Figure 1E the ears 14 and the fin seam 16 protrude. Both the ears 14 and the fin seam 16 are put on in a later manufacturing step, for example by adhesive bonding, it is also possible to seal only the ears 14, the fin seam 16 being forcibly turned over to the side.

Figure 1F shows the pack 15 Figure 1E with ears 14 attached. In addition, the fin seams 16 are also applied to the pack 15. The upper ears 14 arranged in the area of the gable surface 9 are folded down and placed flat against the two side surfaces 3, 4. The upper ears 14 are preferably glued or welded to the two side surfaces 3, 4. The lower ears 14 arranged in the area of the bottom surface 8 are also folded down, but laid flat against the domed underside of the package 15, which is formed by two rectangular surfaces 12 of the bottom surface 8. The lower ears 14 are preferably also glued or welded to the pack 15 - in particular to the rectangular surfaces 12.

In Figure 2A A blank 1 'for producing a first embodiment of a preferred exemplary embodiment of a packaging jacket according to the invention is shown. The already related to Figures 1A to 1F Areas of the cutting described are in Figure 2A provided with corresponding reference numerals. The bottom surface 8 and the gable surface 9 are in the blank 1 'compared to the blank 1 Fig. 1A unchanged.

However, a first difference lies in the fact 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 1 '.

A second difference lies in the fact that the blank 1 ′ has two false fold lines 18 in the area of the lateral surface 17. The two false fold lines 18 run parallel to one another and run through a contact point SB of three adjacent triangular surfaces 13 of the base surface 8 and through a contact point SG of three adjacent triangular surfaces 13 of the gable surfaces 9. The outer surface 17 is turned into an inner partial region 17A and through the false fold lines 18 divided two outer sections 17B. The inner partial area 17A lies between the two false fold lines 18 and the outer partial areas 17B lie outside the two false fold lines 18.

Another difference lies in the shape of the gable surface 9: While the length L8 of the base surface 8 is constant over the entire width of the blank 1 ', the length of the gable surface 9 takes on different values. Adjacent to the outer partial areas 17B of the lateral surface 17, the gable surface 9 has a reduced length L9 min. Adjacent to the inner portion 17A of the lateral surface 17, however, the gable surface 9 has an increased length L9 max. This configuration leads to the fact that the inner partial region 17A has a lower height than the outer partial regions 17B. For the pack to be produced, this results in an inclined, gently sloping gable surface.

Instead of the rectangular surface 12 in the gable area of the known packaging jacket according to Figure 1D the front gable surface in the illustrated and in this respect preferred embodiment is formed by a gable surface 12G with a front edge 19 which is convexly curved at least in sections. In the upper corner areas of the gable surface 12G one can see two curved embossing lines 19 'which give the gable surface 12G a graceful design reminiscent of an ellipse. A circular weakening line S is shown centrally within this gable surface 12 G. This is preferably a circular recess in the carrier material, which is covered with the other plastic and possibly Al layers of the composite material, a so-called "over-coated hole". Its diameter can be adapted to the size of the cutting element of a pouring element to be applied around the line of weakness or can be made relatively small in order to allow a straw to penetrate.

The floor surfaces 8 have two corner points E8 and the gable surfaces 9 have two corner points E9. The corner points E8, E9 represent corner points of the package to be produced from the blank 1 '. Each corner point E8 of a floor surface 8 is assigned a corresponding corner point E9 of a gable surface 9, which is the corner point E9 which is above the latter when the package is standing Corner point E8 is arranged. A fold line 2 'runs through two corresponding corner points E8, E9, each of which serves to form a rear (vertically running) edge of the package to be produced. At the in Figure 2A blank 1 'shown, however - just as with the packing jacket and packing made therefrom - only two continuous fold lines 2' are present. According to the first teaching of the invention, no fold lines are provided between the further corner points of the floor surfaces 8 and the corresponding corner points of the gable surfaces 9 - that is to say on the front lateral surface 17A.

Figure 2B shows a first embodiment of a packaging jacket 10 'according to the invention, which consists of the in Figure 2A shown blank 1 'is formed, in a front view. The already related to Figures 1A to 2A Areas of the packaging jacket described are in Figure 2B provided with corresponding reference numerals. The packaging jacket 10 'is formed from the blank 1' in two steps: First, the blank 1 'is folded along the two false fold lines 18. Then the two partial areas 17A, 17B of the lateral surface 17 are connected to one another in the area of the sealing surface 7, in particular welded, as a result of which a (in Figure 2B hidden) longitudinal seam 11 is formed. The packing jacket 1 'thus has a circumferential, closed structure in the circumferential direction with an opening in the region of the bottom surface 8 and with an opening in the region of the gable surface 9. In the front view, the inner partial region 17A of the jacket surface 17 is visible, which is on both sides of the false fold lines 18 is limited. The remaining partial areas 17B of the outer surface 17 are on the rear side of the packaging sleeve 10 'and therefore in Figure 2B covered.

In Figure 2C is the packing jacket 1 ' Figure 2B shown in a rear view. The already related to 1A to 2B Areas of the packaging jacket described are in Figure 2C provided with corresponding reference numerals. In the rear view, the two outer partial regions 17B of the lateral surface 17 are visible, which are connected to one another by the longitudinal seam 11 and which are delimited on both sides by the false fold lines 18. The front portion 17A of the outer surface 17 is on the front side of the packaging shell 10 'and therefore in Figure 2C covered.

Figure 2D shows the packing jacket 1 ' Figures 2B and 2C when unfolded. The already related to 1A to 2C Areas of the packaging jacket described are in Figure 2D provided with corresponding reference numerals. The unfolded state is achieved by folding back the packaging jacket 1 'along the false fold lines 18 running through the jacket surface 17. The refolding takes place around 180 °. The refolding along the false folding lines 18 has the result that the two subregions 17A, 17B of the Shell surface 17 no longer lie flat on one another, but are arranged in the same plane. The packing jacket 10 'is therefore only in its flat state ( Figures 2B, 2C ) folded along the false fold lines 18; when unfolded ( Figure 2D ), on the other hand, the packing jacket 10 '(just like the packing to be produced therefrom) is no longer folded along the false folding lines 18. Hence the designation "Schein" fold lines 18.

In Figure 2E is the packing jacket 10 ' Figure 2D shown with pre-folded floor and gable surfaces. The already related to Figures 1A to 2D Areas of the packaging jacket described are in Figure 2E provided with corresponding reference numerals. The pre-folded state (as in Figure 1D ) a state in which the fold lines 2 have been pre-folded both in the area of the bottom surfaces 8 and in the area of the gable surfaces 9. The rectangular surfaces 12 are folded inwards during the pre-folding and later form the bottom or the gable of the pack. The triangular surfaces 13 are folded outwards during the pre-folding and form protruding regions made of excess material, which are also referred to as “ears” 14 and are applied to the side surfaces of the package in a later manufacturing step, for example by adhesive processes.

Figure 2F shows a first embodiment of a pack 15 'according to the invention, which consists of the in Figure 2B Packing jacket 10 'shown is formed after welding. The already related to 1A to 2E Areas of the pack described are in Figure 2E provided with corresponding reference numerals. The pack 15 'is shown after the welding, that is to say in the filled and closed state. Because of the increased length L9 max of the gable surface 9 in its area adjacent to the inner partial area 17A of the lateral surface 17 and due to the reduced length L9 min of the gable area 9 in its area adjacent to the outer partial areas 17B of the lateral surface 17, an enlarged gable area is created.
On this gable surface, the pack 15 'is provided with a pouring element AE which extends almost up to the front edge 19 which is curved forward. In the area of the floor surfaces 8 and in the area of the gable surfaces 9 arises after Closing a fin seam 16. In Figure 2F the ears 14 and the fin seam 16 protrude. Both the ears 14 and the fin seam 16 are applied in a later manufacturing step, for example by adhesive processes.

In Figure 2G the pack is 15 ' Figure 2F shown with ears 14 on. The already related to Figures 1A to 2F Areas of the pack described are in Figure 2G provided with corresponding reference numerals. In addition to the ears 14, the fin seams 16 are also applied to the pack 15 '. The upper ears 14 arranged in the area of the gable surface 9 are folded down and placed flat against the lateral surface 17. The upper ears 14 are preferably glued or welded to the lateral surface 17. The lower ears 14 arranged in the area of the bottom surface 8 are also folded down, but are placed flat against the underside of the pack 15 ', which is formed by two rectangular surfaces 12 of the bottom surface 8. The lower ears 14 are preferably also glued or welded to the pack 15 '- in particular the rectangular surfaces 12. In the Figure 2G Pack 15 'shown, however, has no folded edges in the area of the front lateral surface 17A. The front of the pack, which is curved forward according to the invention, can be clearly seen in the horizontal section through the plane X of the pack shown on the right. The straight pack edges 2 'on the rear pack edges run from the lower corner points E8 to the upper corner points E9.

In Fig. 2E ' is also the packing jacket 10 ' Figure 2D shown with pre-folded floor and gable surfaces, which is why corresponding reference numerals are also used here. The difference to Figure 2E lies in the fact that the lower triangular surfaces 13 are not folded outwards but inwards.

2F ' also shows a first embodiment of a pack 15 'according to the invention, which consists of the Figure 2B Packing jacket 10 'shown is formed, after welding, filled and closed. Corresponding reference numerals are therefore also used here. The difference to Figure 2F is that the Triangular surfaces 13 were not folded outwards before welding, but inwards. Therefore, the lower "ears" 14 do not protrude outwards, but extend inwards. This leads to a shorter fin seam 16.

In Fig. 2G ' the pack is 15 ' 2F ' shown with applied upper ears 14 and upper fin seam 16. Corresponding reference numerals are therefore also used here. The lower fin seam 16 is folded over and laid flat against the underside of the package 15 ', which is formed by two rectangular surfaces 12B of the bottom surface 8. The fin seam 16 is preferably glued or welded to the pack 15 '- in particular to a rectangular surface 12B. The difference to Figure 2G lies in the structure of the bottom of the pack 15 ': In Figure 2G the ears 14 are arranged below the rectangular surfaces 12B and are therefore visible from the underside; in Fig. 2G ' however, the rectangular surfaces 12 are arranged below the ears 14 and are therefore visible from the underside.

Figure 3A shows a blank 1 "for producing a second embodiment of a packaging jacket according to the invention. The blank 1" in Figure 3A corresponds to the cut 1 'in Figure 2A , so that corresponding reference numerals are also used here. The blank 1 ″ also has two false fold lines 18 in the area of the outer surface 17. In addition, the false fold lines 18 run through a contact point SB of three adjacent triangular surfaces 13 of the base surface 8 and through a contact point SG of three adjacent triangular surfaces 13 of the gable surfaces 9. Through the false fold lines 9 18, the outer surface 17 'is divided into an inner partial area 17A' and two outer partial areas 17B '. The inner partial area 17A' lies between the two false fold lines 18 and the outer partial areas 17B 'lie outside the two false fold lines 18.

Instead of the continuous rear fold lines of the first exemplary embodiment, there are no continuous fold lines on the lateral surfaces 17 B ', but only relatively short fold line stumps 2 "which are connected both below the corner points E9 and above the corner points E8, between which (according to a small interruption) each extend two divided and essentially parallel fold lines 20 and 20 ', which closely converge above and below after a small bend just before the fold line stumps 2 ".

Relatively short fold line stumps 2 "are also present below in the inner partial area 17A 'of the outer surface 17' above the corner points E8, which ensure particularly good sealing of the floor in the case of production on a mandrel, without significantly changing the overall impression of the package.

In Figure 3B is a second embodiment of a packaging jacket 10 "according to the invention, which consists of the in Figure 3A shown blank 1 "is shown, shown in a front view. The packing jacket 10" in Figure 3B largely corresponds to the packing jacket 10 'in Figure 2B , so that corresponding reference numerals are also used here. The difference lies only in the previously described fold line stumps 2 ″ in the lower front partial region 17A ′ of the lateral surface 17 ′ above the corner points E8.

Figure 3C shows the packing jacket 10 " Figure 3B in a rear view. The package jacket 10 "in Figure 3C largely corresponds to the packing jacket 10 'in Figure 2C , so that corresponding reference numerals are also used here. A distinctive difference is again formed by the fold line stumps 2 ″ adjoining both the corner points E9 and above the corner points E8 and the split fold lines 20 and 20 ′ extending between them in the outer partial regions 17B ′ of the lateral surface 17 ′.

In Fig. 3D the packing jacket is 10 " 3B and 3C shown in the unfolded state. The package jacket 10 "in Fig. 3D largely corresponds to the packing jacket 10 'in Figure 2D , so that corresponding reference numerals are also used here. Here, too, the differences due to the completely different design of the back of the packaging jacket by the divided folding lines 20 and 20 'can be clearly seen.

Figure 3E shows the packing jacket 10 " Fig. 3D with pre-folded floor and gable surfaces. The package jacket 10 "in Figure 3E largely corresponds to the packing jacket 10 'in Figure 2E , so that corresponding reference numerals are also used here. However, the "resolution" of the rear packaging edges is clearly visible through the rear view.

In Figure 3F is a second embodiment of a package 15 "according to the invention, which consists of the in Figure 3B shown packing jacket 10 "is formed, after welding, but still with ears 14 projecting laterally from below and above. The packing 15" in Figure 3F largely corresponds to the packaging 15 'in Figure 2F , so that corresponding reference numerals are also used here. Here, too, it is provided on the gable surface with a pouring element AE which extends almost to the front edge 19, which is curved forward. The different design of the rear pack area can hardly be seen when viewed from the front.

Fig. 3G finally shows the package 15 " Figure 3F with ears on 14. The package 15 "in Fig. 3G largely corresponds to the packaging 15 'in Figure 2G , so that corresponding reference numerals are also used here. Here, too, the 'constriction' at the rear "packaging edges" due to the divided folding lines 20 and 20 'is almost not recognizable when viewed from the front.

The Figures 3E ', 3F' and 3G ' and the section X in turn show the packing jacket 10 " Fig. 3D with pre-folded floor and gable surfaces, the ears 14 formed by the lower triangular surfaces 13 not being folded outwards but inwards. Corresponding reference numerals are therefore used again here. Again in section X you can clearly see the bulging front wall of the pack. In addition to the fold lines 20 and 20 ', each spanning an area angled by 45 °, on the rear "package edges", the ears folded into the interior of the package can also be clearly seen in section X.

Reference symbol list:

1, 1 ', 1 ":

Cutting

2, 2 ':

Fold line

2 ":

Fold line stump

3, 4:

Side surface

5:

front surface

6:

rear surface

7:

Sealing surface

8th:

Floor area

9:

Gable surface

10, 10 ', 10 ":

Packing jacket

11:

Longitudinal seam

12B:

Rectangular area

12G:

Gable surface

13:

Triangular surface

14:

ear

15, 15 ', 15 ":

pack

16:

Fin seam

17, 17 ':

Lateral surface

17A, 17A ', 17B, 17B':

Partial area (of the outer surface 17)

18:

False fold line

19, 19 ':

Front edge, embossing line (the front gable surface 12)

20, 20 ':

Fold lines

AE:

Pouring element

E8:

Corner point (of floor surface 8)

E9:

Corner point (gable surface 9)

S:

Weakening line

SB:

Point of contact (of the triangular surfaces 13 of the base surface 8)

SG:

Point of contact (of the triangular surfaces 13 of the gable surface 9)

Claims (21)

1. Carton sleeve (10') of a composite material for producing a carton (15'), comprising:

   - a sleeve area (17) formed from a front partial area (17A) and a rear partial area (17B),

   - a longitudinal seam (11), which joins two edges of the composite material to form an all-round carton sleeve (10') and is arranged on the rear partial area (17B), and

   - two pseudo fold lines (18), which pass through the sleeve area (17),

   - wherein the carton sleeve (10') is folded along the two pseudo fold lines (18),

   wherein the floor areas (8) and gable areas (9) are arranged on opposite sides of the carton sleeve (10') and wherein the floor areas (8) and the gable areas (9) in each case comprise two rectangular areas (8, 12B) and gable areas (9, 12G) and six triangular areas (13),
   characterised in that
   the carton sleeve (10') in the region of the front partial area (17A) has no further fold lines between the two pseudo fold lines (18).
2. Carton sleeve (10") of a composite material for producing a carton (15"), comprising:

   - a sleeve area (17') formed from a front partial areas (17A') and a rear partial area (17B'),

   - a longitudinal seam (11'), which joins two edges of the composite material to form an all-round carton sleeve (10") and is arranged on the rear partial area (17B'), and

   - two pseudo fold lines (18'), which pass through the sleeve area (17'),

   - wherein the carton sleeve (10') is folded along the two pseudo fold lines (18'),

   wherein the floor areas (8) and gable areas (9) are arranged on opposite sides of the carton sleeve (10") and wherein the floor areas (8) and the gable areas (9) in each case comprise two rectangular areas (8, 12B) and gable areas (9, 12G) and six triangular areas (13),
   characterised in that
   the carton sleeve (10") in the region of the front partial area (17A') has no further fold lines between the two pseudo fold lines (18'), and that the gable area (9) on the rear side of the carton sleeve (10") has a shorter length (L9 min) than the length (L9 max) of the gable area (12G) on the front side of the carton sleeve (10").
3. Carton sleeve (10") according to Claim 2,
   characterised in that
   fold lines (2", 20, 20') are provided on the rear partial surface (17B'), which are interrupted and/or subdivided at least in some sections.
4. Carton sleeve (10") according to Claim 3,
   characterised in that
   the fold lines arranged on the rear partial surface (17B') are formed as fold line stumps (2") and that the fold line stumps (2") can be arranged in the floor region and/or in the gable region of the carton sleeve (10").
5. Carton sleeve (10") according to Claim 3 or 4,
   characterised in that
   the fold lines arranged on the rear partial surface (17B') are formed as subdivided fold lines (20, 20') that preferably run substantially parallel to one another.
6. Carton sleeve (10', 10") according to Claim 1 or any one of Claims 2 to 5,
   characterised in that
   the carton sleeve (10', 10") is folded flat along the two pseudo fold lines (18) by an angle of in each case about 180°.
7. Carton sleeve (10', 10") according to Claim 1 or 2,
   characterised in that
   the pseudo fold lines (18) pass through the point of contact (SB) of three adjacent triangular areas (13) of the floor area and through the point of contact (SG) of three adjacent triangular areas (13) of the gable area (9).
8. Carton sleeve (10') according to Claim 1,
   characterised in that
   the gable area (9) on the rear side of the carton sleeve (10') has a shorter length (L9 min) than the length (L9 max) of the gable area (12G) on the front side of the carton sleeve (10').
9. Carton sleeve (10', 10") according to any one of Claims 1 to 8,
   characterised in that
   the front side of the carton sleeve (10', 10") has a front gable area (12G) that is bounded with respect to the sleeve areas (17A) by a front edge (19) that is convexly curved at least over some sections.
10. Carton sleeve (10', 10") according to Claim 9,
    characterised in that
    the front gable area (12G) in the upper edge regions has convexly curved embossed lines (19').
11. Carton sleeve (10', 10") according to any one of Claims 1 to 10,
    characterised in that
    the front gable area (12G) has a preferably centrally arranged zone of weakness (S).
12. Carton sleeve (10', 10") according to any one of Claims 1 to 11,
    characterised in that
    the pseudo fold lines (18) are scored on the outside of the carton sleeve (10, 10").
13. Carton sleeve (10', 10") according to any one of Claims 1 to 12,
    characterised in that
    the fold lines (2', 2", 20, 20') are scored on the inside of the carton sleeve (10, 10").
14. Carton (15', 15") of a composite material,

    - wherein the carton (15, 15', 15") is produced from a carton sleeve (10', 10") according to anyone of Claims 1 to 13, and

    - wherein the carton (15', 15") is closed in the region of the floor areas (8) and in the region of the gable areas,

    characterised in that
    the carton (15', 15") has no, or no continuous, fold edges in the region of the sleeve area (17).
15. Carton (15', 15") of a composite material,

    - wherein the carton (15, 15', 15") is produced from a carton sleeve (10', 10") according to any one of Claims 1 to 13, and

    - wherein the carton (15', 15") is closed in the region of the floor area (8) and in the region of the front sleeve area (17A),

    characterised in that
    the carton (15', 15") has no, or no continuous, fold edges in the region of the front sleeve area (17A).
16. Carton (15', 15") according to Claim 14 or 15,
    characterised in that
    fold lines (2", 20, 20') are provided on the rear partial area (17B'), which are interrupted and/or subdivided at least over some sections.
17. Carton (15', 15") according to Claim 14 to 16,
    characterised in that
    the partial regions (17A, 17B) of the sleeve area (17) adjoining the pseudo fold lines (18) are arranged in each case in an angular range between 160° and 200°, in particular between 170° and 190°, with respect to one another.
18. Carton (15', 15") according to anyone of Claims 14 to 17,
    characterised by ears (14) that are attached in the lower region of the carton (15', 15") to the floor areas (8).
19. Carton (15', 15") according to any one of Claims 14 to 18, characterised by ears (14) that are attached in the upper region of the carton (15', 15") to the sleeve area (17).
20. Method for producing a carton (15', 15") from a carton sleeve (10, 10") of a composite material, comprising the following steps:

    a) providing a carton sleeve (10', 10") according to any one of Claims 1 to 13,

    b) folding the sleeve area (17) of the carton sleeve (10', 10") back along both pseudo fold lines (18).
21. Method according to Claim 20,
    characterised in that
    the partial regions (17A, 17B) of the sleeve area (17) adjoining the pseudo fold lines (18) lie, after having been folded back again, in each case in an angular range between 160° and 200°, in particular between 170° and 190°, with respect to one another.

Images