EP3439974A1

EP3439974A1 - Device and method for molding closed packaging

Info

Publication number: EP3439974A1
Application number: EP17712477.3A
Authority: EP
Inventors: Felix Breitmar; Birgit Birninger; Matthias Dammers; Johannes Marx; Christoph Mehler; Thomas Vetten
Original assignee: SIG Technology AG
Current assignee: SIG Combibloc Services AG
Priority date: 2016-04-04
Filing date: 2017-03-21
Publication date: 2019-02-13
Anticipated expiration: 2037-03-21
Also published as: EP3581507A1; US20190055045A1; ES2792086T3; JP2019510705A; EP3439971A1; US11745903B2; EP3439971B1; DE102016109980A1; JP2019513636A; US20190152628A1; WO2017174321A1; ES2793015T3; CN108883845B; DE102016109995A1; WO2017174347A1; EP3439964A1; EP3439972A1; WO2017174497A1; DE102016109996A1; CN109311548A

Abstract

The invention relates to a device (19, 19') for molding closed packaging (17), comprising the following: a base (20) for supporting the bottom or the gable closure of the packaging (17), at least two support elements (21A, 21B, 21C, 21D) for supporting the lateral surfaces (3, 4) or the front surface (5) and the rear surface (6) of the packaging (17), and at least two sliding elements (22A, 22B, 22C, 22D) for molding the lateral surfaces (3, 4) or the front surface (5) and the rear surface (6) of the packaging (17). The support elements (21A, 21B, 21C, 21D) and the sliding elements (22A, 22B, 22C, 22D) have at least one molding surface (24, 24', 24") on the element face paired with the packaging (17). The aim of the invention is to allow a precise molding of the packaging (17) even for closed packaging (17) with a complex geometry. This is achieved in that at least one of the molding surfaces (24, 24', 24") is curved at least in some sections. The invention additionally relates to a method for molding closed packaging (17).

Description

Apparatus and method for forming closed packages

The invention relates to a device for forming closed

Packaging comprising: a base plate for supporting the bottom or the gable of the packages, at least two support elements for supporting the side surfaces or the front surface and the rear surface of the packages, and at least two sliding elements for forming the side surfaces or the front surface and the rear surface the packaging, wherein the support elements and the sliding elements have at least one forming surface on their side associated with the packaging.

The invention also relates to a method for forming closed

Packaging comprising the following steps: a) providing a closed package, b) providing a device for forming packages with at least two support elements and with at least two sliding elements, c) inserting the packaging into the space between the support elements, d) moving the sliding elements from an open position to a closed position for forming the packages, e) shifting the sliding elements from one to another

closed position in an open position, and f) removing the packaging from the space between the support elements.

Packaging can be done in different ways and in different ways

Materials are produced. A widespread possibility of production consists in producing from the packaging material a blank usually having fold lines (also called "creasing lines"), from which, by folding and further steps, first a packing jacket and finally a packaging is produced. The blanks are very flat and can therefore be stacked to save space, so that the blanks or pack coats can be produced in a different location than the blanks Folding and filling the packing shells done. As a material composites are often used, for example, a composite of several thin layers of paper, cardboard, plastic or metal. Find such packaging

especially in the food industry.

The production of packaging by folding operations has the advantage of a particularly fast and cost-effective production method. Nevertheless, folds can actually only produce straight fold lines. For the

The production of curved fold lines therefore requires special folding tools or post-processing of the packaging.

Packaging with partially curved fold lines are known, for example, from WO 2009/141389 A2. Devices and methods for producing such packages are known, for example, from DE 1 187 178 A, EP 2 586 718 A1, EP 2 586 718 A1 or DE 10 2006 042 506 A1. A disadvantage of this

Devices and methods, however, is that only packages with straight fold edges can be produced. In addition, some of these documents provide for a lying processing of the packages, so that the packaging, which typically is present at the time of filling, has to be turned after closing. Occasionally, the packaging is only during or after the deformation in the

Forming device filled and closed (DE 10 2006 042 506 AI). However, this is structurally complicated to implement, since when filling and closing the

Packaging must often prevail aseptic or sterile conditions. Against this background, the invention has for its object to enable even with closed packaging with complex geometry precise shaping of the packaging.

This object is achieved in a device according to the preamble of patent claim 1, characterized in that at least one of the molding surfaces is at least partially curved. It is a device for forming or forming closed packaging. This may be, for example, a food-filled package made of a composite material. The composite material may comprise a plurality of thin layers of paper, cardboard, plastic or metal, in particular aluminum. The device first comprises a base plate for

Supporting the bottom or the gable of the packages. The packaging should therefore be able to be parked with its bottom or with its gable on the base plate and thus stand perpendicular to the base plate. The device also comprises at least two support elements for supporting the side surfaces or the front surface and the rear surface of the packages. Preferably, the support elements are arranged at a distance from one another which corresponds approximately to the width or depth of the packaging to be supported by them. Furthermore, the device comprises at least two sliding elements for forming the side surfaces or the front surface and the rear surface of the packages. Under

Push elements are understood elements that can be moved relative to each other, in particular can be moved. In order to be able to shape the packaging, the support elements and the sliding elements have their

Packaging associated with at least one molding surface. Under the

Mold surface is understood to mean that surface which is in contact with the packaging when the packaging is formed.

According to the invention, at least one of the molding surfaces is curved at least in sections. Preferably, at least one of the molding surfaces is continuously curved. The curvature may, for example, be concave or convex. The curvature of one or more shaping surfaces can also be both concave and convex, so that, for example, the concave and convex regions of a molding surface are arranged next to one another or adjacently. The curved mold surfaces may be mold surfaces of the support elements and / or

Form surfaces of the sliding elements act. Due to the curvature of the molding surfaces, packaging with complex geometry can also be formed. these are in particular, packaging in which not all fold lines are straight. Especially such fold lines often get by a one-time folding not their final, salable form, but require a reshaping. In an embodiment of the device, it is provided that all shaping surfaces of the support elements and / or all shaping surfaces of the sliding elements are curved at least in sections. By not only a molding surface, but all molding surfaces of the support elements and / or the sliding elements are at least partially curved, packaging with a particularly complex geometry can be reliably shaped. In particular, you can

Packaging in which to be achieved on multiple sides of the package complex shapes.

After a further embodiment of the device is provided that the

Supporting elements are rigidly connected to the base plate. By connecting both support elements to the same base plate, the distance between the two support elements can be adjusted particularly precisely. In addition, it can be ensured that the two support elements extend approximately at right angles to the base plate. Despite the rigid connection, the support members can be releasably connected to the base plate so that they can be exchanged. This has the advantage that different packages can be formed on the same device. A rigid connection is therefore understood to mean an immovable connection in the unresolved state, that is to say in the operating state. According to a further embodiment of the device, the sliding elements are movably connected to the base plate. By a connection of both

Sliding elements on the same base plate, the direction of movement and the path of movement of both sliding elements can be adjusted very precisely. In addition, it can be ensured that the two sliding elements extend approximately at right angles to the base plate. The sliding elements can be detachable with the base plate be connected so that they can be exchanged. This has the advantage that different packages can be formed on the same device.

For this purpose, it is further proposed that the sliding elements are movably mounted in guides, which are provided in the base plate. Due to the storage of

Sliding elements in guides a particularly precise movement can be achieved. Preferably, the guides are linear. It can be provided that the guides are arranged by two opposite sliding elements on the same axis, so run collinear. In this way

the opposing pressure forces compensate each other during the forming of the

Packaging, so that no torques arise.

A further embodiment of the device is characterized by at least four support elements for supporting the side surfaces or the front surface and the rear surface of the packaging. By increasing the number of support elements, the packages can be kept even more precisely in their position during molding. For example, each of the four support elements may be associated with an edge or a side surface of the packaging. A further embodiment of the device is characterized by at least four sliding elements for forming the side surfaces or the front surface and the rear surface of the packaging. By increasing the number of sliding elements, the packages can be shaped even more precisely. For example, each of the four sliding elements may be assigned an edge or a side surface of the packaging. In addition, it is useful in the production of particularly complex packaging geometries, if a sliding element at least a portion (area) of an edge and at least a portion (area) of a side surface of the packaging is assigned. In a development of the device is provided that in each case two

Support elements are arranged on opposite sides of the package. By the opposite arrangement of the support elements, a two-sided fixation of the packaging is achieved, which allows accurate positioning of the package. Two oppositely arranged support elements can thus fix the packaging in a direction of movement. Four oppositely arranged support elements can thus fix the packaging in two directions of movement. If four support elements are provided, they are preferably aligned at an angle of about 90 ° to each other, so that they surround the package evenly.

A further embodiment of the device provides that in each case two

Sliding elements are arranged on opposite sides of the package. By the opposite arrangement of the sliding elements, the package can be pressurized on both sides with pressure. Preferably, two of the sliding elements are oppositely aligned and arranged on the same axis; they are thus collinear. In this way, the opposing pressure forces compensate when forming the package, so that no torques arise.

After a further embodiment of the device is finally provided that on at least one support element and / or on at least one sliding element, a stop surface is provided which is arranged so that they

Sliding elements serves as a stop. By the stop surfaces to prevent the sliding elements are moved too far between the support elements, thereby damaging or crushing the packaging. The

Stop surfaces therefore serve to limit the path of the sliding elements precisely. Stop surfaces can be achieved, for example, in that the sliding elements are slightly wider at at least one point than the gap between the two adjacent support elements. The provision of stop surfaces also simplifies the drive of the sliding elements. Because the displacement of the sliding elements is limited by the stop surfaces, so that the drive of the sliding elements (for example, electric or hydraulic or pneumatic) no

Wegbegrenzung needs to have. This has the advantage that the same drive at different packaging (and with different sliding elements and / or support elements) can be used without having to be replaced or changed. The above-described object is also achieved by a method for forming closed packages. The method comprises the following steps: a) providing a closed package, b) providing a device for forming packages with at least two support elements and with at least two sliding elements, c) inserting the packaging into the space between the support elements, d) displacing the sliding elements from an open position to a closed position for forming the packages, e) moving the sliding elements from a closed position to an open position, and f) removing the package from the space between the support elements. The packages formed by the process may be, for example, food-filled packaging made from a composite material. The composite material may comprise a plurality of thin layers of paper, cardboard, plastic or metal, in particular aluminum.

The method is characterized in that the packages are formed by shaping surfaces, at least one of which is curved at least in sections. Preferably, at least one of the molding surfaces is continuously curved. The curvature may, for example, be concave or convex. The curvature of one or more shaping surfaces can also be both concave and convex, so that, for example, the concave and convex regions of a molding surface are arranged next to one another or adjacently. The curved shaping surfaces can be shaping surfaces of the supporting elements and / or shaping surfaces of the sliding elements. As has already been described above in connection with the device, packaging of complex geometry can also be formed by the curvature of the shaping surfaces. These are in particular packaging in which not all fold lines are straight. Mainly get such fold lines often by a single folding not yet their final, salable form, but require a new shaping.

According to a development of the method, it is provided that in step b) a device according to one of claims 1 to 10 is provided. Due to the at least partially curved mold surfaces, the device described above is particularly suitable in all the embodiments shown

Implementation of the procedure. A further embodiment of the method provides that the packages in steps d) and e) are perpendicular to their bottom area or on their gable area. The vertical orientation of the packaging has the advantage that the

Packaging after filling and closing no longer rotated - for example, to the side - must be. This is because most of the packaging is filled either by the (still unlocked) floor area or by the (still unlocked) gable area. By the falling away

Rotational movements, the contents of the packaging is spared, which is particularly desirable for sensitive content. According to a further embodiment of the method it is provided that the

Sliding elements are moved from an open position to a closed position until they collide against the stop surfaces with the support elements. The limitation of the displacement by a stop is a structurally simple way to prevent damage to the packaging. A particular advantage is that the drive of the sliding elements is simplified by the stop surfaces. Because the displacement of the sliding elements is limited by the stop surfaces, so that the (for example, electric or hydraulic or pneumatic) drive the sliding elements itself need not have a travel limit. This has the advantage that the same drive with different packaging (and with different sliding elements and / or Support elements) can be used without having to be replaced or changed.

A further embodiment of the method finally provides that the packaging, in particular the gable area of the packaging, is arched outward in the closed position of the sliding elements. In other words, the remaining in the closed position between the sliding elements volume should be slightly less than the volume of the closed packaging. To this, too

For this reason, one side of the packaging - preferably the top side, ie the gable area - should not be touched and deformed by the sliding elements, instead a space should be left on this side of the packaging which allows the packaging to bulge outward, ie convexly curved, so that the packaging is to be deformed beyond its ready-to-sell form, which compensates for the return behavior of the packaging material.

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

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

1A shows a blank for folding a packing jacket,

FIG. 1B shows a packing jacket which is made from the blank shown in FIG. 1A

is formed, in the flat folded state in a front view,

FIG. 1C: the packing jacket from FIG. 1B in a rear view, FIG.

1D: the packing jacket of FIG. 1B and FIG. IC in the unfolded state, FIG.

Fig. IE: the packing jacket of Fig. 2D with pre-folded bottom and

Gables, the packing jacket of FIG. 2D with prefolded bottom and gable surfaces, a first embodiment of a package formed from the packing jacket shown in FIG. 1B after welding, a second embodiment of a package consisting of the packing jacket shown in FIG. 1B 1F with applied ears, the packaging of Fig. 1F 'with applied ears, a first embodiment of a device according to the invention for forming closed packages in an open position in a perspective view, the device is formed from 2A in the closed position in a perspective view, the device of FIG. 2A in the open position in cross section, the device of FIG. 2A in the closed position in cross section, a second embodiment of a device according to the invention for forming closed packages in an open position in FIG perspective view, Fig. 3B: the device off Fig. 3A in the closed position in

perspective view, 3C: the device of FIG. 3A in the open position in cross section, and

Fig. 3D: The device of Fig. 3A in the closed position in cross section.

Fig. 1A shows a blank 1 for folding a packing jacket. 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 can in 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 are divided. The

Bottom surfaces 8 and the gable surfaces 9 each comprise rectangular surfaces 10 and triangular surfaces 11. A blanket 1 can be formed from the blank 1 by folding the blank 1 in such a way that the sealing surface 7 can be connected to the front surface 5, in particular welded.

The four large areas (ie, the two side surfaces 3, 4, the front surface 5 and the rear surface 6) of the blank 1 shown in Figure 1 are not separated by a respective straight fold line 2; instead, the four large surfaces 3, 4, 5, 6 separated by two curved fold lines 2 ', between each of which a free-form surface 12 is arranged. The two side surfaces 3, 4 of the blank 1 each have a dummy fold line 13. The two dummy fold lines 13 are straight and run parallel to one another. In addition, the dummy fold lines 13 extend through a contact point SB of three adjacent triangular surfaces 11 of the bottom surface 8 and through a contact point SG of three adjacent ones

Triangular surfaces 11 of the gable surfaces 9.

The bottom surfaces 8 of the blank 1 shown in FIG. 1A have four corner points E8 and the gable surfaces 9 have four corner points E9. The vertices E8, E9 represent corner points of the packaging to be produced from the blank 1. Each vertex E8 of a bottom surface 8 is associated with a corresponding corner point E9 of a gable surface 9, which is in each case that corner point E9, which is arranged at a stationary packaging above this corner point E8. By two mutually associated vertices E8, E9 extends a corner axis EA, which would correspond to a conventional cuboid packaging a vertical packaging edge. In the case of blank 1 shown in FIG. 1A, therefore, as well as in the case of the packing jacket produced therefrom and the product produced therefrom

Packaging - four corner axes EA present (for reasons of clarity, only one corner axis EA is always drawn). Between the vertices E8 the

Floor surfaces 8 and their associated vertices E9 of the gable surfaces 9 - ie along the corner axes EA - no fold lines are provided.

In Fig. 1B, a packing jacket 14 formed from the blank 1 shown in Fig. 1A is shown in a flat folded state in a front view. 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 14 has been formed from the blank 1 by two steps. First, the blank 1 is folded along the two dummy fold lines 13. Subsequently, the two subregions 6A, 6B of the divided rear surface 6 in the region of the sealing surface 7 are joined together, in particular welded, whereby a longitudinal seam 15 (hidden in FIG. 1B) is produced. The packing jacket 14 thus has a circumferential, circumferentially closed structure with an opening in the region of

Bottom surface 8 and with an opening in the region of the gable surface 9. The inside of the packing jacket 14 extending edge of the longitudinal seam 15 is covered. The purpose of covering the open cut edge of the composite is to avoid contact between the contents of the package and this layer, particularly the paper layer or paperboard layer contained therein. The cover of the cut edge is done here by a folding of the composite layer after previous peeling. In the front view, the centrally located front surface 5 is visible, which is bounded on both sides by fold lines 2 '. On the side are portions 3A, 4A of the

Side surfaces 3, 4 recognizable, which are also bounded laterally by fold lines 2 '. The remaining portions 3B, 4B of the side surfaces 3, 4 are on the back of the

Packing mantle 14 and therefore hidden in Fig. 2B. Between the fold lines 2 'open spaces 12 are provided. The open spaces 12 are in the areas of

Packing jacket 14 arranged later forming the (non-angular) "edges" of a package.

Fig. IC shows the packing jacket 14 of Fig. 1B in a rear view. The areas of the packing jacket already described in connection with FIGS. 1A and 1B are provided with corresponding reference symbols in FIG. 1C. In the rear view, the centrally located rear surface 6 is visible, comprising two connected by the longitudinal seam 15 portions 6A, 6B and which is bounded on both sides by fold lines 2 '. Side portions 3B, 4B of the side surfaces 3, 4 can be seen, the side are also bounded by fold lines 2 '. The remaining sections 3A, 4A of

Side surfaces 3, 4 are concealed on the front side of the packing jacket 14 and therefore in Fig. IC. Between the fold lines 2 'are also on the back of the

Packungsmantels 14 open spaces 12 provided. The free surfaces 12 are arranged in the regions of the packing jacket 14, which later form the (non-angular) "edges" of a packaging body, Fig. 1D shows the packing jacket 14 of Figs. 1B and 1C in the unfolded state The folded-up state can be achieved by several folding steps: First, a folding of the packing jacket 14 takes place along the fold lines 2 'between the four Secondly, the package jacket 14 folds back along the dummy fold lines 13 passing through the side surfaces 3, 4. The refolding takes place by approximately 180 ° As a result, the two partial areas 3A, 3B of the first side surface 3 adjoining the dummy fold line 13 do not more to each other, but at least approximately in the same plane are arranged. Correspondingly, the refolding has along the Apparent fold lines 13 with the result that the two adjacent to the dummy fold line 13 portions 4A, 4B of the second side surface 4 are no longer on top of each other, but at least approximately in the same plane are arranged. The packing jacket 14 is therefore folded along the apparent fold lines 13 only in its flat state (FIG. 1B, FIG. 1C); In the unfolded state (FIG. 1D), however, the packing jacket 14 (as well as the packaging to be produced therefrom) is no longer folded along the apparent fold lines 13. Hence the term "sham" fold lines 13.

Fig. IE shows the packing jacket 14 of Fig. 1D with pre-folded bottom and

Gables. The regions of the packing jacket already described in connection with FIGS. 1A to 1D are provided with corresponding reference symbols in FIG. 1C. The prefolded state designates (as in FIG. 1D) 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 (ie the rectangular surfaces 12) are folded inwards during the prefolding 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 (ie the triangular surfaces 11) are folded outwards during the prefolding and form protruding areas of excess material, which are also referred to as "ears" 14 and in FIG a later manufacturing step - such as by welding or adhesive - are applied to the packaging.

In Fig. IE 'is also the packing jacket 14' of Fig. 1D shown with prefolded bottom and gable surfaces, which is why corresponding reference numerals are used here. The difference to Fig. IE is that the triangular surfaces 11 are not folded outwards, but inwards.

Fig. 1F shows a package 17 formed from the package jacket 14 shown in Fig. 1B after welding. The areas of the packaging already described in connection with FIGS. 1A to IE are shown in FIG. 1F with corresponding ones Provided with reference numerals. The packaging 17 is shown after welding, ie in the filled and closed state. In the region of the bottom surfaces 8 and in the region of the gable surfaces 9, a fin seam 18 is produced after closing. In FIG. 1F, the ears 16 and the fin seam 18 are in abutment. Both the ears 14 and the fin seam 18 are applied in a later manufacturing step, such as by adhesive or welding techniques.

Fig. 1F 'also shows a package 17 which is shown in Fig. 1B

Packing jacket 14 is formed, after welding. Here, too, corresponding reference numerals are therefore used. The difference to FIG. 1F is that the triangular surfaces 11 in the bottom region of the packaging were not folded outwardly, but inwardly, prior to the welding. Therefore, the "ears" 14 in the bottom portion of the package do not protrude outward, but extend inwardly, resulting in a shorter fin seam 18.

In Fig. IG, the package 17 of Fig. 1F with applied ears 14 is shown. The areas of the already described in connection with FIGS. 1A to 1F

Packaging are provided in Fig. IG with corresponding reference numerals. In addition to the ears 14 and the fin seams 18 are applied to the package 17. 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, arranged in the area of the bottom surface 8 ears 14 are also folded down, but applied flat to the bottom of the package 17, which is formed by two rectangular surfaces 10 of the bottom surface 8. Preferably, the lower ears 14 with the package 17 - in particular with the rectangular surfaces 10 - glued or welded. In the packaging 17 shown in Fig. IG, the front surface 5 and the rear surface 6 are arranged parallel to each other. Likewise, in the packaging 17, the two side surfaces 3, 4 are arranged parallel to each other. Between each two adjacent surfaces of the four large surfaces 3, 4, 5, 6 form angles of about 90 °. The transition between the four big ones However, surfaces 3, 4, 5, 6 are (unlike in the case of the packaging 17 from FIG. 1C) not formed by angular edges but by geometrically complex open spaces 12.

In Fig. IG ', the package 17 of FIG. 1F' with applied fin seam 18 is shown. Again, therefore, corresponding 5 reference numerals are used. The fin seam 18 is folded over and laid flat against the underside of the packaging 17, which is formed by two rectangular surfaces 10 of the bottom surface 8. Preferably, the fin seam 18 is glued or welded to the packaging 17, in particular to a rectangular area 10. The difference to Fig. IG is the structure of the bottom of the package 17: In Figure IG, the ears 14 are arranged below the rectangular areas 10 and thus visible from the bottom; in Fig. IG ', however, the rectangular surfaces 10 are arranged below the ears 14 and thus of the

Bottom visible. FIG. 2A shows a first embodiment of a device 19 according to the invention for forming closed packages 17 in an open position in FIG

perspective view. The device 19 comprises a base plate 20 on which the package 17 can be placed with its bottom. The device also comprises two support elements 21A, 21B, which are fixedly and immovably connected to the base plate 20 and two sliding elements 22A, 22B, which are movable with the

Base plate 20 are connected. For the movable mounting of the sliding elements 22A, 22B, linear guides 23 are provided in the base plate 20. The two

Support elements 21A, 21B have on the inner sides - that is to say on the sides assigned to the packaging 17 - in each case one (in FIG. 2A concealed) forming surface 24. The two sliding elements 22A, 22B have on the insides - ie at the

Packing 17 associated sides - three (in Fig. 2A hidden) molding surfaces 24, of which a centrally arranged mold surface 24 'is to form the front surface 5 and the rear surface 6 and of which two laterally arranged mold surfaces 24 "the free-form surfaces 12th the packaging 17. The shape of the

Forming surfaces 24, 24 ', 24 "corresponds to the negative of the shape to be reached of the surfaces of the package 17 formed by them. In the position shown in FIG. 2A the package 17 is already pushed from above between the two rigid support elements 2 LA, 21 B; However, the two sliding elements 22A, 22B have no contact with the package 17, which is why the position is referred to as "open" position.

In Fig. 2B, the device 19 of Fig. 2A in the closed position in

shown in perspective view. The areas of the device already described in connection with FIGS. 1A to 2A are shown in FIG. 2B with corresponding ones

Provided with reference numerals. The essential difference from FIG. 2A is that the two sliding elements 22A, 22B have been displaced inwards and are now in contact with the packaging 17. Therefore, this position is referred to as a "closed position." Through the contact between the forming surfaces 24, 24 ', 24 "and the package 17, the package 17 is deformed and placed in its salable form. In Fig. 2B it can be seen that the two sliding elements 22A, 22B are wider than the package 17 and therefore have a stop surface 25 on both sides. By the stop surfaces 25 prevents the two

Sliding elements 22A, 22B can be pushed between the two support members 21A, 21B while crushing the package 17. Fig. 2C shows the device 19 of Fig. 2A in the open position in cross section. The areas of the already described in connection with Fig. LA to Fig. 2B

Device are provided in Fig. 2C with corresponding reference numerals. The position shown in Fig. 2C corresponds to the position of Fig. 2A. For reasons of clarity, however, the packaging 17 is not shown in FIG. 2C. Clearly visible are the linear course of the two guides 23 and the position of the molding surfaces 24, 24 ', 24 ".

In Fig. 2D, the device 19 is shown in Fig. 2A in the closed position in cross section. The areas of the device already described in connection with FIGS. 1A to 2C are provided with corresponding reference symbols in FIG. 2D. The position shown in Fig. 2D corresponds to the position of Fig. 2B. Because of For better clarity, the package 17 is not shown in Fig. 2D. The circumferential structure of the molding surfaces 24, 24 ', 24 ", which results when sliding elements 22A, 22B are pushed inwards, can be clearly seen in Fig. 3A shows a second embodiment of a device 19' according to the invention for forming closed packages 17 in an open position in

perspective view. The structure of the second embodiment of the device 19 'is similar to the structure of the first embodiment of the device 19, which is why corresponding reference numerals are used in Fig. 3A. A difference from the first embodiment lies in the fact that the second embodiment of the device 19 'has four support elements 21A, 21B, 21C, 21D which are fixedly and immovably connected to the base plate 20. In addition, the second one

Embodiment of the device 19 'four sliding elements 22A, 22B, 22C, 22D, which are movably connected to the base plate 20. The four sliding elements 22A, 22B, 22C, 22D are also mounted in the second embodiment in each case in a linear guide 23 which is provided in the base plate 20. The four support elements 21A, 21B, 21C, 21D have on the inner sides - that is to say on the sides assigned to the packaging 17 - one (in FIG. 2A concealed) forming surface 24. Also the four

Sliding elements 22A, 22B, 22C, 22D each have a molding surface 24 "(concealed in FIG. 2A) on the inner sides-that is, on the sides associated with the packaging 17. The molding surfaces 24 of the four support elements 21A, 21B, 21C, 21D are intended to be the two side surfaces 3, 4, the front surface 5 and the rear surface 6 of the

Packaging 17 form and the molding surfaces 24 "of the sliding elements 22A, 22B, 22C, 22D are to form the free-form surfaces 12 of the package 17. Die Form der

Forming surfaces 24, 24 "correspond to the negative of the shape to be achieved of the surfaces of the package 17 formed by them. In the position shown in Fig. 3A, the package 17 has already been pushed from above between the four rigid support members 21A, 21B, 21C, 21D; however, the four sliding elements 22A, 22B, 22C, 22D are not yet in contact with the package 17, which is why the position is referred to as the "open" position. In Fig. 3B, the device 19 'of Fig. 2A is shown in a closed position in a perspective view. The areas of the device already described in connection with FIGS. 1A to 3A are shown in FIG. 3B with corresponding ones

Provided with reference numerals. The essential difference from FIG. 3A is that the four sliding elements 22A, 22B, 22C, 22D have been displaced inwards and are now in contact with the packaging 17. Therefore, this position as

Through the contact between the forming surfaces 24, 24 "and the package 17, the package 17 is deformed and placed in its closed position

brought ready for sale form. In Fig. 3B it can be seen that the four sliding elements 22A, 22B, 22C, 22D are wider than the gap between two adjacent ones

Support members 21A, 21B, 21C, 21D, which is why this on both sides of a

Have stop surface 25. The stop surfaces 25 prevent the four sliding elements 22A, 22B, 22C, 22D from being able to be pushed between the four support elements 21A, 21B, 21C, 21D, thereby crushing the packaging 17.

Fig. 3C shows the device 19 'of Fig. 3A in the open position in cross-section. The areas of the already described in connection with Fig. LA to Fig. 3B

Device are provided in Fig. 3C with corresponding reference numerals. The position shown in Fig. 3C corresponds to the position of Fig. 3A. For reasons of better clarity, however, the packaging 17 is not shown in FIG. 3C. Clearly visible are the linear course of the four guides 23 and the position of

Shapes 24, 24 ".

Finally, FIG. 3D shows the device 19 'from FIG. 3A in the closed position in cross-section. The areas of the device already described in connection with FIGS. 1A to 3C are shown in FIG. 3D with corresponding ones

Provided with reference numerals. The position shown in Fig. 3D corresponds to the position of Fig. 3B. For reasons of better clarity, the packaging 17 is not shown in FIG. 3D. Clearly visible is the circumferential structure of the molding surfaces 24, 24 ", which results in pushed inward sliding elements 22A, 22B, 22C, 22D. LIST OF REFERENCE NUMBERS

1: cut

2, 2 ': fold line

3: first side surface

4: second side surface

5: front surface

6: rear surface

6A, 6B: partial area (the rear surface)

7: sealing area

8: floor area

9: gable area

10: rectangle area

11: triangular area

12: Freeform surface

13: Apparent fold line

14, 14 ': packing jacket

15: longitudinal seam

16: ear

17: packaging

18: Fin seam

19, 19 ': device

20: base plate

21A, 21B, 21C, 21D: supporting element

22A, 22B, 22C, 22D: sliding element

23: Leadership

24, 24 ', 24 ": molding surface

25: stop surface

EA: corner axis

E8: corner point (the bottom surface 8)

E9: corner point (the gable surface 9)

Claims

claims

Apparatus (19, 19 ') for forming closed packages (17), comprising:

a base plate (20) for supporting the bottom or the gable of the

Packaging (17),

- At least two support elements (21A, 21B, 2 IC, 21D) for supporting the

Side surfaces (3, 4) or the front surface (5) and the rear surface (6) of the packages (17), and

at least two sliding elements (22A, 22B, 22C, 22D) for forming the side surfaces (3, 4) or the front surface (5) and the rear surface (6) of the packages (17),

- wherein the support elements (21A, 21B, 21C, 21D) and the sliding elements (22A, 22B, 22C, 22D) have at least one forming surface (24, 24 ', 24 ") on their side associated with the packaging (17),

characterized in that

at least one of the molding surfaces (24, 24 ', 24 ") is curved at least in sections.

Device (19, 19 ') according to claim 1,

characterized in that

all shaping surfaces (24) of the supporting elements (21A, 21B, 21C, 21D) and / or all shaping surfaces (24 ', 24 ") of the sliding elements (22A, 22B, 22C, 22D) are curved at least in sections.

Device (19, 19 ') according to claim 1 or claim 2,

characterized in that the support elements (21A, 21B, 2 IC, 21D) are rigidly connected to the base plate (20).

Device (19, 19 ') according to one of claims 1 to 3,

characterized in that

the sliding elements (22A, 22B, 22C, 22D) are movably connected to the base plate (20).

Device (19, 19 ') according to claim 4,

characterized in that

the sliding elements (22A, 22B, 22C, 22D) are movably mounted in guides (23) provided in the base plate (20).

Device (19 ') according to one of claims 1 to 5,

marked by

at least four support elements (21A, 21B, 2C, 21D) for supporting the

Side surfaces (3, 4) or the front surface (5) and the rear surface (6) of the packages (17).

Device (19 ') according to one of claims 1 to 6,

marked by

at least four sliding elements (22A, 22B, 22C, 22D) for molding the

Device (19, 19 ') according to one of claims 1 to 7,

characterized in that

in each case two support elements (21A, 21B, 21C, 21D) are arranged on opposite sides of the packaging (17).

Device according to one of claims 1 to 8, characterized in that

each two sliding elements (22A, 22B, 22C, 22D) are arranged on opposite sides of the package (17). 10. Device (19, 19 ') according to one of claims 1 to 9,

characterized in that

on at least one support element (21A, 21B, 21C, 21D) and / or on at least one slide element (22A, 22B, 22C, 22D) a stop surface (25) is provided, which is arranged to engage the slide elements (22A, 22B , 22C, 22D) serves as a stop.

11. A method of forming closed packaging (17), comprising the following steps:

a) providing a closed package (17),

b) providing a device for forming packages (17) with at least two support elements (21A, 21B, 2C, 21D) and with at least two slide elements (22A, 22B, 22C, 22D),

c) inserting the package (17) into the space between the support elements (21A, 21B, 21C, 21D),

d) shifting the sliding elements (22A, 22B, 22C, 22D) from an open position to a closed position to form the packages (17), e) displacing the sliding elements (22A, 22B, 22C, 22D) from one

closed position in an open position, and

f) removing the packaging (17) from the space between the

Support elements (21A, 21B, 21C, 21D),

characterized in that

the packages (17) are formed by forming surfaces (24, 24 ', 24 ") at least one of which is curved at least in sections.

characterized in that in step b) a device (19, 19 ') according to one of claims 1 to 10 is provided.

Method according to claim 11 or claim 12

characterized in that

the packages (17) in steps d) and e) perpendicular to their

Floor area or on its gable area.

14. The method according to any one of claims 11 to 13,

characterized in that

the sliding members (22A, 22B, 22C, 22D) are displaced from an open position to a closed position until they collide against the abutment surfaces (25) with the support members (21A, 21B, 21C, 21D).

15. The method according to any one of claims 11 to 14,

characterized in that

the package (17), in particular the gable area of the packaging (17), is arched outwards in the closed position of the sliding elements (22A, 22B, 22C, 22D).