DE102012014951B3 - Method for packing portioned liquid- or paste-like products in processing state in wrapper, involves preforming product into product-forming shaft, where lateral longitudinal edges of packing material web are upwardly folded - Google Patents

Abstract

The method involves preforming a product into a product-forming shaft (6), where the preformed product portion (10) is fed on the central area between the lateral longitudinal edges (2a,2b) of packing material web (2) directed below the product-forming shaft from the packing material. The lateral longitudinal edges of the packing material web are upwardly and inwardly folded to the longitudinal side surfaces of the preformed product portion. The packing material is cut into lengths by forming a finished wrapper transverse to its longitudinal side edges. An independent claim is included for a device for packing portioned liquid- or paste-like products in the processing state in a wrapper made of packing material.

Description

• – einer Vorform- und Aufgabeeinrichtung, welche zum Aufgeben einer vorgeformten Produktportion auf das Packstoffmaterial ausgebildet ist;
• – einer Führungseinrichtung, welche zum Zuführen einer Packstoffbahn in Transportrichtung derselben an die Vorform- und Aufgabeeinrichtung ausgebildet ist;
• – wenigstens einer Falteinrichtung, welche zum Umfalten der Ränder des Packstoffmaterials nach oben und innen um die Produktportion herum ausgebildet ist; und
• – einer Schneideeinrichtung, welche zum Ablängen der Packstoffbahn quer zu deren Längsrändern ausgebildet ist.

The invention relates to a method for packaging portioned, at least in the processing state liquid or pasty products in a cut from a packaging material wrapping of a packaging material by the portioned product in a pasty state the packaging material abandoned and the edges of the packaging material upwards and inwards on the Product portion to be folded over. The invention further relates to a device suitable in particular for carrying out such a method for packaging portioned products, at least in the processing state liquid or pasty products in a wrapper made of a packaging material, with

• A preforming and feeding device adapted to apply a preformed product portion to the packaging material;
• A guide device which is designed to feed a packaging material web in the transport direction thereof to the preforming and feeding device;
• - At least one folding device, which is designed for folding over the edges of the packaging material material upwards and inwards around the product portion; and
• - A cutting device, which is formed for cutting the packaging material web transversely to the longitudinal edges thereof.

Methods and devices of the aforementioned type are known and find in particular for the portioned packaging of at least in the processing state liquid to more or less pasty foods such as butter, margarine, pasty fats, melting and cream cheese, chocolate, soup pastes and the like, widespread use. As a rule, the procedure is such that initially flat blanks are produced by a packaging material web transported by means of a transport device on a cutting device. The blanks then pass to a preforming and feeding device, which is designed to apply a preformed product portion to the packaging material. For this purpose, the preforming and feeding device has one or two or more folding shafts arranged side by side, into which the blank cut to length from the packaging material material is drawn by means of a folding punch, the folding punch and / or the folding shaft having corresponding guides for forming the folds and overlapping are provided to be stacked sections of the blank. In this way, an upwardly open wrapper is generated, which then z. B. can be stored in one or more cells of the preforming and feeding device, in which / which the wrapping then the product portion in the liquid or pasty state is abandoned. Finally, the upwardly projecting side parts of the wrapper are folded up or folded inwards onto the exposed side of the product by means of a folding device associated with the preforming and feeding device. Methods and devices for such packaging of pasty products are for example from DE 101 00 085 A1 . DE 103 30 725 A1 and DE 10 2008 020 604 B4 known. A similar method for packaging pasty products by folding a flat blank of a wrapper in a folding shaft, after which it is given the pasty product portion, is the EP 1 114 580 A2 refer to.

Such methods and devices have proven themselves for large-scale packaging of pasty products of the above type in large quantities. A disadvantage, however, is that the methods and devices require relatively expensive packaging materials, which are cut to the wrappers, the packaging materials used in particular must on the one hand a relatively high tensile strength, on the other hand have a relatively high stiffness to contracted on the occasion of their shaping in the folding shaft and to be able to collapse in order to be able to give them the liquid to pasty product in the processing state. Another problem may be that the known methods and devices are relatively inflexible with regard to the sometimes desired functions of the wrapping package. For example, it is only conditionally, if not at all possible, to package the pasty products more or less airtight in order to protect the mostly perishable packaged goods from short-term oxidative attack. In addition, it may be problematic, for example, to provide the wrapping packages with tools that facilitate the (initial) opening of the wrapping package by the consumer. Finally, it may also be desirable to provide the pasty product with a, for example, the manufacturer-identifying mark, for which the known methods and devices are also only partially suitable.

The US 2 600 216 A describes a cyclic process for packaging pasty products, such as margarine, in a wrapper by placing product portions one after another on a packaging web, folding them around the product portions and cutting them between the product portions and finally sealing them.

The invention is therefore the object of developing a method and an apparatus of the type mentioned in a simple and cost-effective manner to the effect to counteract the aforementioned disadvantages at least as far as possible.

• – das Produkt in einem Produkt-Formschacht vorgeformt und die vorgeformte Produktportion auf den zentralen Bereich zwischen den seitlichen Längsrändern einer unterhalb des Produkt-Formschachtes vorbeigeführten Packstoffbahn aus dem Packstoffmaterial aufgegeben wird;
• – wonach die seitlichen Längsränder der Packstoffbahn nach oben und innen um die den seitlichen Längsrändern der Packstoffbahn zugewandten Längsseitenflächen (10a, 10b) der vorgeformten Produktportion herum auf die Produktportion umgefaltet werden;
• – wonach das Packstoffmaterial der Packstoffbahn im Wesentlichen senkrecht zu deren seitlichen Längsrändern auf die Querseitenflächen der vorgeformten Produktportion umgefaltet und unter Bildung des fertigen Einwicklers quer zu ihren seitlichen Längsrändern abgelängt wird.

In process engineering terms, this object is achieved in a method for packaging portioned pasty products in a wrapper of the type mentioned above in that

• - The product is preformed in a product forming shaft and the preformed product portion is placed on the central region between the lateral longitudinal edges of a guided past below the product forming shaft packaging material web of the packaging material;
• - According to which the lateral longitudinal edges of the packaging material web upwards and inwards around the lateral longitudinal edges of the packaging material web facing longitudinal side surfaces ( 10a . 10b ) of the preformed product portion are folded around onto the product portion;
• - After which the packaging material of the packaging material web is folded over substantially perpendicular to its lateral longitudinal edges on the transverse side surfaces of the preformed product portion and cut to form the finished wrapper transversely to their lateral longitudinal edges.

• – die Vorform- und Aufgabeeinrichtung wenigstens einen Produkt-Formschacht aufweist, welcher in seiner Aufgabeposition oberhalb der Führungseinrichtung angeordnet ist, um die vorgeformte Produktportion auf die mittels der Führungseinrichtung an dem Produkt-Formschacht vorbeigeführte Packstoffbahn aufzugeben;
• – eine erste Falteinrichtung, welche zum Umfalten der seitlichen Längsränder der Packstoffbahn nach oben und innen um die den seitlichen Längsrändern der Packstoffbahn zugewandten Längsseitenflächen der vorgeformten Produktportion herum auf die Produktportion ausgebildet ist, in Transportrichtung der Packstoffbahn stromab der Vorform- und Aufgabeeinrichtung angeordnet ist;
• – eine zweite Falteinrichtung, welche zum Umfalten des Packstoffmaterials der Packstoffbahn im Wesentlichen senkrecht zu deren seitlichen Längsrändern auf die Querseitenflächen der vorgeformten Produktportion ausgebildet ist, in Transportrichtung der Packstoffbahn stromab der ersten Falteinrichtung angeordnet ist; und
• – die Schneideeinrichtung in Transportrichtung der Packstoffbahn stromab der zweiten Falteinrichtung angeordnet oder in die zweite Falteinrichtung integriert ist.

In terms of device technology, the invention also provides for solving this problem in a device for packaging portioned pasty products in a wrapper of the type mentioned above that

• The preforming and feeding device has at least one product forming shaft, which in its feeding position is arranged above the guiding device in order to deposit the preformed product portion onto the packaging material web guided past the product forming shaft by means of the guiding device;
• A first folding device, which is designed to fold the lateral longitudinal edges of the packaging material web upwards and inwards around the lateral longitudinal edges of the packaging material web facing longitudinal side surfaces of the preformed product portion around the product portion, in the transport direction of the packaging material downstream of the preforming and feeding device;
• A second folding device, which is designed to fold over the packaging material material of the packaging material web substantially perpendicular to its lateral longitudinal edges on the transverse side surfaces of the preformed product portion, is arranged downstream of the first folding device in the transport direction of the packaging material web; and
• - The cutting device is arranged in the transport direction of the packaging material downstream of the second folding device or integrated into the second folding device.

In particular, the invention is characterized in this respect by a complete departure from the prior art cited above, when the packaging material web is not first cut to length and the cut produced by cutting is pulled into a folding shaft to give him the product portion, but the product portion is first preformed and on the (more) more or less flat packaging material web is abandoned, on which the product is transported to the first and the second folding means to first fold the longitudinal edges of the packaging material web up and inwardly around the longitudinal side surfaces of the preformed Produktportion on the top and then the accordingly in particular folded over in the manner of a, preferably the preformed product portion adjacent, hose prefabricated packaging material transversely to the lateral longitudinal edges, in order to envelop the transverse side surfaces of the preformed product portion with the packaging material. Only then is the packaging material web between the product portions located on it cut to length with the formation of the finished unwrapping device, wherein these separating operations are carried out in each case between two in the transport direction of the packaging material web successively arranged on the same product portions on the - side faces facing the - Packaging material has already been folded over. The guide device, on which the packaging material web is fed to the product forming shaft and the two folding devices, can be z. B. in the usual way of rotating carrier bands, roller assemblies or only more or less flat guide surfaces, etc. may be formed, as they are as such, for example, from the above-mentioned DE 10 2008 020 604 B4 are known.

Since retracting a packaging material which has already been cut to length into a blank prior to the product application into a folding shaft is dispensed with according to the invention, the packaging material is subject to less stringent requirements, in particular with respect to tensile strength and stiffness of the packaging material, so that relatively cost-effective packaging material is also required can be processed. The more or less continuous transport of the still unperforated packaging material web to the folding devices also offers a simplification of the packaging process and makes lower demands on the corresponding packaging device, which can thereby be relatively inexpensively ausgestalten. Moreover, due to the fact that both the application of the pasty product and the folding of the packaging material around the transverse and longitudinal side surfaces as well as around the top of the product portion occur at a time when the packaging material web has not yet been cut to individual wraps is various modifications of the wrapping, such as a below-mentioned, more or less airtight sealing the same by means of sealing or gluing, use of tools for the first time opening the wrapping, such as tear threads or the like, or an imposition of structures on the pasty packaging material.

In an advantageous embodiment of the method according to the invention can be provided that the pasty product is given to the downwardly open product forming shaft and abandoned by this from above the packaging material web. The product forming shaft can be filled, for example, in portions from below with the pasty product.

In terms of device technology, it can preferably be provided for this purpose that the preforming and feeding device has at least one downwardly open product forming shaft which is equipped with a stamp that can be displaced substantially vertically in order to transfer a product portion located therein onto the packaging material web. In order to ensure proper detachment of the product from the stamp when it is pushed out of this from the mold shaft to store the preformed in the mold shaft product portion on the packaging material, the mold shaft can be assigned at least in a task position thereof a separator, such as a in the cross-sectional plane of the forming shaft parallel to the plane of the punch back and forth movable wire or the like. For filling the mold shaft with the pasty product, a metering device may further be provided, which the product, for. B. essentially continuously, promotes into a reservoir, in which the mold shaft thereof, at least in a metering position of the same can be shifted from above, so that the pasty product -. B. due to pure adhesion to the walls of the mold shaft - is held in the latter until the product portion is placed on the packaging material web.

As already indicated, it can be provided according to a development of the method according to the invention that prior to the application of the pasty product portion on the packaging material a transverse to the longitudinal edges extending tear thread is applied, wherein the product portion is applied to the provided with the tear thread portion of the packaging material. Such tear threads can consequently be placed on the packaging material web in a region of the packaging material web upstream of the forming shaft of the preforming and feeding device in a manner appropriate to the intended spacing of the product portions on the packaging material transported past the folding means, after which the product portion is placed on a packaging material web Aufreißfaden provided portion of the packaging material web is abandoned so that it adheres to the pasty product and thus held by the latter in the required position also in the subsequent folding of the packaging material around the product portion.

An embodiment of a device according to the invention suitable for this purpose is accordingly distinguished by the fact that the preforming and feeding device is preceded by a thread depositing device in the transport direction of the packaging material web, which is designed to apply a tearing thread to the packaging material web transversely to its longitudinal edges. The thread-depositing device can comprise, for example, a coil arranged laterally with the packaging material web or its guide device with an endless thread, which is unwound and cut at periodic intervals transversely over the packaging material web transported past the yarn depositing device.

As also already mentioned, the configuration according to the invention offers the possibility of a complete (eg for the protection of the packaged item from external influences) or even only partial (eg for the formation of a tamper-evident closure in order to be able to recognize a first-time opening of the wrapping packer). Closing the wrapper by means of sealing, gluing or the like.

An advantageous embodiment of the method according to the invention can provide for this purpose that at least the longitudinal edges of the packaging material web folded over the longitudinal side surfaces of the preformed product portion are connected to one another, in particular sealed or glued together. This may preferably be done by bringing the end portions of these longitudinal edges parallel to each other and perpendicular to the top of the preformed product portion of this above in abutment against each other and sealed or glued together in this position. The connection of the longitudinal edges can be either sections, respectively about the length of a respective, transported on the transport product portion, or it can be provided with advantage that around the longitudinal side surfaces of the preformed Produktportion around the product portion folded longitudinal edges of the packaging material web to form a be connected to each other over a plurality of successively arranged on the packaging material web product portions, in particular endless, sealing or adhesive connection, so that the packaging material is virtually folded into a successively transported on this product portions (endless) hose and closed.

• – wenigstens zwei erste Faltflächen aufweisen, welche sich jeweils in einer im Wesentlichen vertikalen und parallel zur Transportrichtung der Packstoffbahn angeordneten Ebene zu beiden Seiten der Packstoffbahn erstrecken, um deren Längsränder nach oben auf die den seitlichen Rändern der Packstoffbahn zugewandten Längsseitenflächen der Produktportion umzufalten; wobei die erste Faltstation ferner
• – wenigstens zwei zweite Faltflächen aufweisen kann, welche sich jeweils in einer im Wesentlichen horizontalen Ebene von einem oberen Bereich einer jeweiligen ersten Faltfläche nach innen in Richtung der anderen ersten Faltfläche erstrecken, um die nach oben auf die Längsseitenflächen der Produktportion umgefalteten Längsränder der Packstoffbahn nach innen auf die Oberseite der Produktportion umzufalten.

According to an advantageous embodiment of a device according to the invention, the first folding device

• - Have at least two first folding surfaces, which extend in each case in a substantially vertical plane arranged parallel to the transport direction of the packaging material on both sides of the packaging material to fold their longitudinal edges up on the side edges of the packaging material facing longitudinal side surfaces of the product portion; the first folding station being further
• - At least two second folding surfaces may have, each extending in a substantially horizontal plane from an upper portion of a respective first folding surface inwardly toward the other first folding surface, around the upwardly on the longitudinal side surfaces of the product portion folded longitudinal edges of the packaging material web inside to fold over on top of the product serving.

When transporting the pasted with the preformed product portions packaging material web on the first folding device, the longitudinal edges of the packaging material web at the first folding surfaces - whose distance corresponds approximately to the width of the product portion and in particular can be adjusted to adapt to different product formats can - Folded longitudinal side surfaces of the product portions, after which the end portions of the longitudinal edges of the so prefolded packaging material during further transport to the second folding surfaces - their distance from the packaging material carrying the guide device corresponds approximately to the height of the product portion and in turn can be particularly adjustable to adapt to different product formats - be folded over on the top of the product portion.

If longitudinal closure of the wrapping package by means of sealing or gluing is desired, it may further be provided that a first sealing or gluing device is associated with the first folding device in order to seal together the longitudinal edges of the packaging material web which are folded parallel to the lateral edges of the packaging material web or stick together. The first sealing or adhesive device may in this case be arranged above the first folding device-in particular above the second folding surfaces thereof-and / or in the transport direction of the packaging material web downstream of the first folding device, and at least two having sealing or adhesive rollers rotatable about a substantially vertical axis. which accommodate the two edge portions of the folded over the product portion longitudinal edges of the packaging material between them and able to seal under pressure together with each other or to glue. For this purpose, the second folding surfaces of the first folding device preferably form a longitudinal slot arranged between their mutually facing end sides, through which the two longitudinal end sections of the packaging material web are pulled when passing the first folding device, so that they come to rest in an approximately vertical orientation parallel to one another. in order to be connected together in this position by means of the first sealing or gluing device by being guided between their sealing or adhesive rollers.

The sealing or adhesive rollers of the first sealing or adhesive device can serve in this case in particular at the same time for transporting the packaging material web in the transport direction by not only passively rolling on the longitudinal side end portions of the packaging material under pressure, but are provided with an active drive, which for ensures the transport of the packaging material web on the guide device.

With regard to a closure of the wrapping packaging can be provided in an advantageous embodiment of the method according to the invention that at least the substantially perpendicular to the longitudinal edges of the packaging material on the transverse side surfaces of the preformed Produktportion folded portions of the packaging material connected transversely to the longitudinal edges thereof, in particular sealed or glued together , become. For this purpose, it may be advantageous if the sections of the packaging material web which are folded over substantially perpendicular to the longitudinal edges of the packaging material web onto the transverse side surfaces of the preformed product portion are sealed or glued to one another by a central, lower section of the packaging material web and those around the top and inside The longitudinal outer edges of the packaging material web facing longitudinal side surfaces of the preformed Produktportion folded on the product portion, upper outer sections of the packaging material brought into contact with each other and sealed or glued together in this position to both sides of a respective preformed product portion (ie with respect to the transport direction thereof both upstream and downstream) provide a seal or glue line extending transversely across the web of packaging material. Of course, the term "line" does not exclude that the seal or glue line has a certain width, which may be advantageous for the reasons mentioned below.

The folded packaging material web can then preferably be cut to length essentially in the middle of the sealing or adhesive bond extending transversely to the longitudinal edges of the packaging material web to form the finished wrapping machine, so that only one folding operation transversely with respect to the Packing material web or transversely with respect to the transport direction and preferably only one extending transversely over the packaging material web sealing or glue line for two successively transported on the packaging material product portions is needed. The seal or glue line must of course be formed with a sufficient width.

The method according to the invention thus offers in particular the possibility that the sealing or bonding of the sections of the packaging material web folded over substantially perpendicular to the longitudinal edges of the packaging material web onto the transverse side surfaces of the preformed product portion and the cutting of the packaging material web is carried out in a single working step, i. H. During the folding process, as soon as the central, lower section of the packaging material web has come into contact with the upper outer sections of the packaging material web that have been folded upwards and inwards around the longitudinal edges of the packaging material web facing the preformed product portion, the sealing strip is immediately brought into abutment. or adhesive bonding made to connect said portions of the packaging material together.

In connection with the folding of the packaging material web transversely to its longitudinal edges, it may also be advantageous if, during the folding of the packaging material of the packaging material web on the transverse side surfaces of the preformed product portion, the packaging material substantially perpendicular to the longitudinal edges of the packaging material web inwards in the direction of the transverse side surfaces of the product portion is pressed to prevent escape of the packaging material to the outside during folding and thus to ensure a close concern of the packaging material on the product portion, without there protrude portions of the packaging material material to the outside.

According to an advantageous embodiment of a device according to the invention, the second folding device may comprise at least one pair of cooperating and arranged transversely to the transport direction of the packaging material folding beams, of which one folding beam below and the other folding beam is arranged above the packaging material web, and the folding bars of a pair substantially vertically to each other can be displaced to and from each other to fold over the central lower portion as well as the top portions of the packaging material folded over the top of a product portion in the transport direction thereof upstream and downstream of a product portion located on the packaging material web on the transverse side surfaces of the product portion. In this way, in particular, the folding bars are able to fold over the packaging material web folded transversely to the longitudinal axis of such a tube transversely to the longitudinal axis of such a tube both upstream and downstream of each product portion onto its transverse side surfaces.

If a transverse closure of the wrapping packaging by means of sealing or gluing is desired, it may further be provided that the second folding device is associated with a second sealing or gluing device to each other about the sections of the packaging material web folded over the longitudinal sides of the packaging material web seal or glue. The second sealing or gluing device can in this case be integrated, in particular, into the folding beams of the second folding device, in that the folding beams are heated, for example, in order, in conjunction with the folding process - d. H. if in each case a central section of the packaging material web has been brought into abutment with the outer side surfaces of the preformed product portion folded over onto the product portion on the outer side surfaces of the packaging material web, immediately upstream and downstream of the product longitudinal portion of the packaging material web immediately upstream or downstream of a product portion in abutment against each other - the packaging material to seal along this fold line.

The second folding device may moreover comprise a push-in device which has two push-in jaws which are displaceable in and out of the folding beam in the direction in which the packaging material of the packaging material is folded over the transverse side surfaces of the preformed product portion substantially perpendicular to the packaging material Squeezing longitudinal edges of the packaging material web inwards in the direction of the transverse side surfaces of the product portion and to prevent escape of the packaging material material to the outside during folding. Said - substantially horizontal - movement of the crimping jaws in the extension direction of the folding bars is expediently synchronized with the - substantially vertical - movement of the folding bars such that the crimping jaws during the movement of the folding bars towards each other initially from the outside (ie from the longitudinal edges of the packaging material her) penetrate into the space between the folding beam and move again from the gap during further closing of the folding bars until the folding bars abut each other under transverse folding and optionally sealing the intermediate packaging material.

In an advantageous embodiment, moreover, the cutting device in the folding beams of be integrated with the second folding device, so that both the transverse folding and optionally the sealing / bonding as well as the cutting to length of the packaging material web can take place in a single step. For this purpose, the folding beams can have, for example, a cutting edge extending in the direction of extrusion thereof, a knife arranged in a longitudinal groove or movable or the like.

In a further advantageous embodiment can be provided that the folding beams on a parallel to the transport direction of the packaging material movable carrier, in particular in the form of each one -. B. circulating - carrier tape, are arranged to move in accordance with the transport speed of the packaging material with this can, if the transverse folding of the packaging material to the transverse side surfaces of the product portion and optionally the associated sealing / bonding or the cutting process to be performed.

In the latter case, it may also be expedient if the folding beams arranged on the support which can be moved parallel to the transport direction of the packaging material web at the same time serve to transport the packaging material web in the transport direction, at least in its facing folding position. H. On the occasion of their movement in the direction of transport of the (already prefolded) packaging material web, they push the packaging material web along with them by "locking" between two product portions located on the packaging material web during the folding process. This can be done alternatively or cumulatively to the above-mentioned, preferably transport function of the sealing or adhesive rollers of the first sealing or adhesive device.

After the above-described folding operations of the packaging material web have been carried out both on the longitudinal side surfaces and on the top of the product portions and on the transverse side surfaces and optionally the sealing or adhesive bonds have been attached, the correspondingly folded packaging material web can consequently by means of the cutting device integrated in particular in the second folding device in each case two product portions transported one after the other on the packaging material web are transversely cut to form the finished wrapping machines. In order to apply optionally projecting from the product portion portions of the wrapper on the side surface (s) of the product portion can be provided in a further development of the method according to the invention that with the cut out of the packaging material wrapping product portion is passed through a calibration well. If the paste-like product portion is to be provided with an example identifying the manufacturer of the pasty packaging material notice, the product portion can be further provided in the calibration well with an impression.

A device according to the invention can be further developed for this purpose such that the second folding device and the cutting device in the transport direction of the packaging material web is followed by a calibration shaft with a arranged in this höhenverlagerbar, in particular provided with a surface stamping stamp, which serves to pass the wrapping through the calibration , The stamp can also be provided, for example, with a surface embossing to provide the pasty product with a complementary embossing. Likewise, it is of course possible to apply a label or the like on the wrapping, which can also be done in the calibration, for example, by an adhesive label is supplied together with each Einwicklerverpackung in the calibration well.

Incidentally, if the device is equipped with such a calibration well, it is alternatively possible to dispense with the second sealing or adhesive device assigned to the second folding device and the sealing or adhesive joint extending transversely to the packaging material web instead by means of a second seal associated with the calibration shaft or gluing device in order to seal or glue together the sections of a packaging material web transported transversely to the lateral edges of the packaging material web onto the transverse side surfaces of a product portion.

In particular, the method according to the invention further provides the possibility that the packaging material web with the preformed product portion is kept under an inert gas atmosphere when the sealing or adhesive compound (s) is / are made on the packaging material web, so that the usually perishable pasty product in the wrapping package Protected against oxidative attack and against other external influences and its durability is increased.

In terms of device technology, it can preferably be provided for this purpose that at least the second sealing or adhesive device-be it associated with the second folding device or also with the calibration shaft-is arranged in an inert gas chamber.

Further features and advantages of the invention will become apparent from the following description of an embodiment with reference to the drawings. Showing:

1 a schematic overall perspective view of an embodiment of a device according to the invention for packaging portioned pasty products in a wrapper;

2 a schematic perspective detailed view of the preforming and feeding device and this of the downstream first folding device of the device according to 1 ;

3 a schematic perspective detail view of the first folding device according to 2 downstream second folding device of the device according to 1 ;

4 a schematic perspective detail view of the calibration of the device according to 1 ; and

5 an elevation of one by means of the device according to 1 to 4 produced wrapping to illustrate the fold lines.

In 1 Figure 3 is an overall schematic view of an apparatus for packaging portioned pasty products, such as butter or margarine, in a wrapper. How out 1 can be seen, the device comprises a total by the reference numeral 1 provided preforming and feeding device, which for preforming the pasty packaging material and for giving the same on a packaging material web 2 serves, one of the preforming and feeding device 1 subordinate and overall with the reference numeral 3 provided first folding device and a total with the reference numeral 4 provided second folding device. A guide device, not shown, is used for supplying the z. B. of roles 5a . 5b endless unwound packaging material web 2 to the preforming and feeding device 1 and for further transport of the packaging material web 2 to the first 3 and second folding device 4 , The guide means may be formed according to known guide means for web-like materials and comprise, for example, circulating carrier tapes, roller conveyors, support surfaces and the like. The transport direction of the packaging material web 2 is indicated by the arrow T.

Like both the 1 as well as the 2 can be seen, has the preforming and feeding device 1 a plurality of - in the present case four - downwardly open product shafts 6 each having a punch vertically displaceable therein 7 are equipped to the respective mold shaft 6 fill from bottom to top (the stamp 7 of empty form shaft 6 shifts vertically from bottom to top) or emptying from top to bottom (the stamp 7 of the filled mold shaft 6 shifts vertically from top to bottom). The form shafts 6 are in the peripheral area of a carousel 8th arranged in the direction of the arrow 9 around the vertical central axis of the carousel 8th is rotatable. In this way it is by cyclically turning the carousel 8th possible, the form shafts 6 on the one hand in a loading position above that of the packaging material web 2 (see the in 1 and 2 front or lower mold shaft) to a preformed product portion 10 on the packaging material web 2 to convict. On the other hand, it is possible the shafts 6 in a metering position, in which they are above a metering device 11 are located (see the in 1 and 3 rear or upper mold shaft) to fill them with the pasty product. The metering device 11 includes in the present embodiment z. B. a feed tube for delivering the (for example, by heating) in the liquid or pasty state packaged good, which in an upwardly open and upwards in the direction of the carousel 8th expanding reservoir opens, in which each of the mold shaft to be filled 6 immersed on the occasion of its filling with the pasty product.

As further in particular from 2 shows, the first folding device 3 two first folding surfaces 12a . 12b on, which are formed for example in the form of baffles. The first two folding surfaces 12a . 12b each extend in an approximately vertical plane parallel to the packaging material web 2 on both longitudinal sides of the same, with their distance from each other transversely to the packaging material web 2 according to the width of a preformed - in the present case cuboid - product portion 10 is selected. At its in the transport direction T supplied packaging material web 2 facing end faces are the first two folding surfaces 12a . 12b with from the level of the packaging material web 2 rising run-up slopes 12c . 12d formed around the longitudinal edges 2a . 2 B the packaging material web 2 gently along this run-up slope 12c . 12d up to the insides of the first two folding surfaces 12a . 12b fold without the packaging material web 2 Damage takes, for example, tears. The distance of the first folding surfaces 12a . 12b Of course, it can be changed to take account of different product formats. In the transport direction T downstream of the first folding surfaces 12a . 12b includes the first folding device 3 also two second folding surfaces 13a . 13b which are each in an approximately horizontal plane from an upper region of the two first folding surfaces 12a . 12b transverse to the packaging material web 2 inward in the direction of the other second folding surface 13b . 13a extend. At its in the transport direction T supplied packaging material web 2 facing end faces can also be the two second folding surfaces 13a . 13b with from the vertical plane of the first folding surfaces 12a . 12b expanding inward chamfers 13c . 13d formed around the longitudinal edges 2a . 2 B the packaging material web 2 gently along this run-up slope 13c . 13d inwardly along the undersides of the two second folding surfaces 12a . 12b on top 10c the product portion 10 fold without the packaging material web 2 Damage takes, for example, tears.

The function of the first folding device 3 thus consists in a folding of the lateral longitudinal edges 2a . 2 B the packaging material web 2 upwards and inwards around the side edges 2a . 2 B the packaging material web 2 facing longitudinal side surfaces 10a . 10b the preformed product portion 2 around to the top 10c the product portion 2 , During transport, the packaging material web slides 2 in the direction of the arrow T, the lateral longitudinal edges 2a . 2 B the packaging material web 2 first over the run-up slopes 12c . 12d along the insides of the first folding surfaces 12a . 12b so that they are folded up and on the long side surfaces 10a . 10b a respective preformed product portion 10 come to the plant, whereupon they on the run-up slopes 13c . 13d along the bottoms of the second fold surfaces 13a . 13b inside on the top 10c a respective product portion 10 be folded and come to the latter to the plant. The free end portions of the longitudinal edges 10a . 10b the packaging material web 10 can in particular by one between the two second folding surfaces 13a . 13b protrude longitudinal slot formed.

How to continue the 1 and 2 it can be seen, is the first folding device 3 a first sealing device 15 assigned, which in the present case two in the transport direction T of the packaging material web 2 Siegelwalzenpaare arranged one behind the other 16a . 16b having. To fulfill their sealing function, the sealing rolls are 16a . 16b in particular heated. The two pairs of sealing rolls 16a . 16b are in the present embodiment immediately downstream of the first folding device 3 and with a vertical distance with respect to the transported in the transport direction T packaging material web 2 or their supporting guide means arranged above the same, so that through the longitudinal slot between the two second folding surfaces 13a . 13b the first folding device 3 protruding end portions of the lateral longitudinal edges 2a . 2 B the packaging material web 2 during transport in the direction of the arrow T between two opposite rolls of a pair of sealing rolls 16a . 16b be transported therethrough to be sealed together - in particular substantially gas-tight. The two sealing rolls of each pair of sealing rolls 16a . 16b For this purpose, they are rotatable in opposite directions about an approximately vertical axis to either side of the folded longitudinal edges 2a . 2 B the packaging material web 2 under pressure against the adjoining longitudinal edges 2a . 2 B to roll off to this. In this way, the first sealing device 15 already parallel to the lateral longitudinal edges 2a . 2 B the packaging material web 2 on the preformed product portion 10 folded longitudinal edges 2a . 2 B the packaging material web 2 to seal with each other to form a kind of tube, in particular, an endless tube can be produced, which all of the sealing device 15 further transported product portions 10 (whose on the packaging material web 2 resting underside, the two longitudinal side surfaces 10a . 10b as well as their top 10c ) wrapped. The sealed roller pairs 16a . 16b are also rotationally driven in a manner synchronized with the transport speed of the packaging material web in order to transport the packaging material web 2 in the transport direction T to provide.

Again in the transport direction T of the packaging material web 2 downstream of the first sealing device 3 is how out 1 and in particular 3 seen, the second folding device 4 positioned, which at least one or in particular a plurality (not shown) of cooperating pairs of folding beams 17a . 17b having. The folding beams 17a . 17b of a (respective) pair each extend transversely to the packaging material web 2 or transversely to the transport direction T, wherein in each case a folding beam 17a one folding beam pair below and the other folding beam 17b of the same pair above the packaging material web 2 is arranged. The two folding beams 17a . 17b of a Faltbalkenpaares are on the one hand in the direction of the arrow 18 approximately vertically toward and away from each other displaceable around the lower portion and by means of the first folding device 3 on top of a product serving 10 folded upper, at the first sealing device 15 Sealed sections of the packaging material web 2 in the transport direction T both upstream and downstream of a respective on the packaging material web 2 located product portion 10 on the lateral sides 10d . 10e the product portion 10 to fold. In the present embodiment, the folding beams 17a . 17b the folding beam pair on the other hand to a respective carrier in the form of one each parallel to the packaging material web 2 and in a synchronized with their transport speed way circulating carrier tape 19 set to them also in the transport direction T of the packaging material web 2 (or more precisely: the now formed Packstoffschlauches) and relocate them on the occasion of a folding process both upstream and downstream of a respective product portion 10 to be able to position (arrow 40 ). Be the two folding beams 17a . 17b a folding beam pair therefore in the direction of the arrow 18 moved towards each other, so is the at the second folding device 2 already tube-shaped packaging material web 2 between each two transported on her or wrapped by her product portions 10 transverse to the packaging material web 2 or across whose transport direction T compressed so that they are around the transverse side surfaces 10e . 10d each adjacent product portions 10 folded over and comes to this plant. In this case, on the occasion of a single folding operation on the one hand in the transport direction T rear transverse side surface 10e a front in the transport direction T, first product portion 10 on the other hand, in the transport direction T front transverse side surface 10d another, in the transport direction T behind the first product portion 10 transported, second product portion 10 covered by the packaging material.

The at the in the direction of the arrow 40 circumferential straps 19 arranged folding beams 17a . 17b serve - in a manner similar to the above in connection with the first sealing device 15 explained seal roller pairs 16a . 16b - At least in their facing folding position at the same time for the transport of the packaging material web 2 in the transport direction T, on the occasion of their synchronized movement (arrow 40 ) in the transport direction T of the (already tube-prefolded) packaging material web 2 take them with them, in particular during a respective folding process in which they are in the in 3 are shown, approximate each other position, between each two on the packaging material web 2 transported product portions 2 intervene or "lock".

The second folding device 4 is also equipped with a push-in device 41 equipped, which two in the extension direction of the folding beams 17a . 17b in the space between them in and out of this in the direction of the arrow 42 movable impression jaws 43a . 43b during the folding of the packaging material of the packaging material web 2 on the lateral sides 10d . 10e the preformed product portion 10 the packaging material substantially perpendicular to the longitudinal edges 2a . 2 B the packaging material web 2 , ie transversely to the transport direction T, inwardly in the direction of the transverse side surfaces 10d . 10e the product portion 10 to press and prevent escape of the packaging material outward during folding. The essentially horizontal movement of the indenting jaws 43a . 43b in the extension direction of the folding beams 17a . 17b (ie transverse to the packaging material web 2 or transversely to the transport direction T) is in this case with the vertical movement of the folding beams 17a . 17b synchronized that the indenting jaws 43a . 43b during the movement of the folding beams 17a . 17b towards each other (arrow 18 ) first from the outside (ie from the longitudinal edges 2a . 2 B the packaging material web 2 fro) into the space between the folding beams 17a . 17b penetrate (arrow 42 ) and the further closing of the folding beams 17a . 17b (Arrow 18 ) again out of the gap (arrow 42 ) until the folding beams 17a . 17b under transverse folding of the intermediate packaging material abut against each other.

The second folding device 4 Furthermore, a second sealing device is assigned to the transverse to the lateral longitudinal edges 2a . 2 B the packaging material web 2 on the lateral sides 10d . 10e a respective product portion 10 folded-over sections of the packaging material web 2 or of the "packaging material tube" produced therefrom. The second sealing device is in the present embodiment in the second folding device 4 integrated and thereby formed that the folding beams 17a . 17b a respective Faltbalkenpaares are heated to the transverse to the transport direction T to the transverse side surfaces 10d . 10e the product portions 10 folded sections of the packaging material web 2 to seal with each other on the occasion of the folding process. The width of the folding beams 17a . 17b is dimensioned such that a likewise in the second folding device 4 integrated (or possibly also this downstream, not shown) cutting device the packaging material web 2 which the individual product portions 10 now enveloped completely gas-tight, along this transversely to the transport direction T extending sealing lines or strips, preferably approximately in the middle of the same, severed to form the finished wrapping packaging. In the 3 unrecognizable cutting device is in the present embodiment in the folding beams 17a . 17b integrated, so that the transverse folding including the lateral impressions, the sealing as well as the cutting to length of the packaging material web 2 or the packaging material hose can be done in a single step. The folding beams 17a . 17b For this purpose, for example, at their mutually facing folding or sealing surfaces in the same Ersteckungsrichtung, ie transverse to the packaging material web 2 or transverse to the transport direction T, extending cutting edge, a stationary or movable in a longitudinal groove thereof arranged knife or the like.

The now by means of the particular in the folding beams 17a . 17b the second folding device 4 In addition to the integrated cutting device, cut individual wrapper packs can also have a transport direction T downstream of the second folding wrapper. 4 and sealing device and downstream of the cutting device arranged calibration shaft 20 be fed, which in 4 is shown in more detail. The calibration well 20 has a in this höhenverlagerbar arranged stamp 21 on to the isolated wrapping packages through the calibration tray 20 to press through and in particular the possibly of the transverse side surfaces 10d . 10e and / or from the top 10c protruding, sealed portions of the packaging material to the transverse side surfaces 10d . 10e or to the top 10c to apply. In addition, if desired, the pasty packaging material can be provided with an embossing, if, for example, the stamp 21 is provided with a complementary embossing.

In order to ensure a higher durability of the packaged goods, at least the second folding device 3 with the second sealing device (and of course also the first folding device 3 ) may be arranged in an inert gas chamber (not shown) so that the packaged goods sealed in a gastight manner by the wrapper package are not exposed to atmospheric oxygen and both increase the shelf life of the generally perishable packaged goods and improve the hygienic conditions.

In addition, it is possible to wrap the wrapping with both the first-time opening the packaging facilitating as well as in the manner of a tamper evident tearing thread 25 to provide (see in particular 1 ). This is given in the present embodiment in that the preforming and feeding device 1 in the transport direction T of the packaging material web 2 a thread storage device 26 is upstream, which z. B. a coil 27 has, from which the tear thread 25 intermittently across the packaging material web 2 unwound and cut to length.

In 5 is an outline or plan of a device according to the 1 to 4 produced wrapping, which in three-dimensional representation, moreover, the 4 (below) can be seen reproduced to illustrate the fold lines. The package length is denoted by the reference character L, the package width by B and the package height by H. The central, dotted area 30 of the wrapper covers the footprint of the product serving 10 , which in the in 2 illustrated situation of the still flat packaging material web 2 rests after the in the mold shaft 6 preformed product portion 10 on the packaging material web 2 has been transferred. To the base 30 close in 5 up and down the means of the first folding surfaces 12a . 12b the first folding device 3 generated fold lines 31 on which the base area 30 with the longitudinal side surfaces 10a . 10b ( 2 ) of the product portion 10 covering surface sections 32 connect. The latter in turn join in 5 up and down the means of the second folding surfaces 13a . 13b the first folding device 3 generated fold lines 33 and 34 on, on the one hand, the longitudinal side surfaces 10a . 10b ( 2 ) of the product portion 10 covering surface sections 32 with the half top each 10c ( 2 ) of the product portion covering surface sections 35 connect (fold lines 33 ). On the other hand, the fold lines connect 34 which each half top 10c ( 2 ) of the product portion 10 covering sections 35 with the longitudinal edge portions 36 the wrapping, which by means of the first sealing device 15 ( 2 ) over the in 4 hatched area have been joined together. The means of the second folding device 4 ( 3 ) generated fold lines 37 connect the base surface, the longitudinal side surfaces 10a . 10b and the top 10c the product portion 10 ( 2 ) covering sections 30 . 32 . 35 with the half side surfaces 10d . 10e the product portion 10 ( 4 ) covering sections 38 , The transverse edge sections 39 of the winder are by means of the second folding device 3 integrated second sealing device ( 4 ) over the in 5 hatched area have been interconnected. As are the marginal, sealed areas 36 . 39 cut in the corners of the wrapper, the wrapper can be made gas-tight in particular to better protect the. Packaged from external influences.

Claims (31)

Method for packaging portioned, at least in the processing state liquid or pasty products in one of a packaging material web ( 2 ) cut-to-length wrappers made of a packaging material, in which the portioned product is applied to the packaging material in a pasty state and the edges of the packaging material are directed upwards and inwards onto the product portion ( 10 ), characterized in that - the product in a product forming chute ( 6 ) preformed and the preformed product portion ( 10 ) on the central area between the lateral longitudinal edges ( 2a . 2 B ) one below the product forming shaft ( 6 ) pasted packaging material web ( 2 ) is abandoned from the packaging material; - according to which the lateral longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) upwards and inwards around the lateral longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) facing longitudinal side surfaces ( 10a . 10b ) of the preformed product portion ( 10 ) around on the product portion ( 10 ) are folded over; - according to which the packaging material of the packaging material web ( 2 ) substantially perpendicular to their lateral longitudinal edges ( 2a . 2 B ) on the transverse side surfaces ( 10d . 10e ) of the preformed product portion ( 10 ) and folded to form the finished wrapper transverse to its lateral longitudinal edges ( 2a . 2 B ) is cut to length. A method according to claim 1, characterized in that the pasty product the downwardly open product forming shaft ( 6 ) and from the top of the packaging material web ( 2 ) is abandoned. A method according to claim 1 or 2, characterized in that before giving up the pasty Product serving ( 10 ) on the packaging material web ( 2 ) transversely to their longitudinal edges ( 2a . 2 B ) extending tear thread ( 25 ), after which the product portion ( 10 ) on the with the tear thread ( 25 ) provided section of the packaging material web ( 2 ) is applied. Method according to one of claims 1 to 3, characterized in that at least those around the longitudinal side surfaces ( 10a . 10b ) of the preformed product portion ( 10 ) around on the product portion ( 10 ) folded longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) are joined together, in particular, sealed or glued together. A method according to claim 4, characterized in that the around the longitudinal side surfaces ( 10a . 10b ) of the preformed product portion ( 10 ) around on the product portion ( 10 ) folded longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) are sealed or glued together by the end portions of these longitudinal edges ( 2a . 2 B ) parallel to each other and perpendicular to the top ( 10c ) of the preformed product portion ( 10 ) are abutted against each other by the above and sealed or glued together in this position. A method according to claim 4 or 5, characterized in that the around the longitudinal side surfaces ( 10a . 10b ) of the preformed product portion ( 10 ) around on the product portion ( 10 ) folded longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) forming one over a plurality of successively on the packaging material web ( 2 ) arranged product portions ( 10 ) extending, in particular endless, sealing or adhesive connection are interconnected. Method according to one of claims 1 to 6, characterized in that at least substantially perpendicular to the longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) on the transverse side surfaces ( 10d . 10e ) of the preformed product portion ( 10 ) folded sections of the packaging material web ( 2 ) transversely to the longitudinal edges ( 2a . 2 B ) thereof, in particular, are sealed or glued together. A method according to claim 7, characterized in that the substantially perpendicular to the longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) on the transverse side surfaces ( 10d . 10e ) of the preformed product portion ( 10 ) folded sections of the packaging material web ( 2 ) are sealed or glued together by a central, lower portion of the packaging material web ( 2 ) as well as the upward and inward around the longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) facing longitudinal side surfaces ( 10a . 10b ) of the preformed product portion ( 10 ) around on the product portion ( 10 ) folded, upper outer sections of the packaging material web ( 2 ) are brought into abutment against each other and sealed or glued together in this position. Method according to claim 7 or 8, characterized in that the packaging material web ( 2 ) substantially in the middle of the transversely to the longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) extending seal or adhesive bond is cut to form the finished wrapper. A method according to claim 9, characterized in that the sealing or gluing of the substantially perpendicular to the longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) on the transverse side surfaces ( 10d . 10e ) of the preformed product portion ( 10 ) folded sections of the packaging material web ( 2 ) and the cutting of the packaging material web are carried out in a single work step. Method according to one of claims 1 to 10, characterized in that during the folding of the packaging material of the packaging material web ( 2 ) on the transverse side surfaces ( 10d . 10e ) of the preformed product portion ( 10 ) the packaging material substantially perpendicular to the longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) inwards in the direction of the transverse side surfaces ( 10d . 10e ) of the product portion ( 10 ) is pressed to prevent outward deflection of the packaging material during folding. Method according to one of claims 1 to 11, characterized in that the with the from the packaging material web ( 2 ) cut-to-length wrappers packed product serving ( 10 ) through a calibration well ( 20 ) is passed to optionally from the product portion ( 10 ) projecting portions of the wrapper to the side surface (s) of the product portion ( 10 ). Process according to claim 12, characterized in that the pasty product portion ( 10 ) in the calibration well ( 20 ) is provided with an impression. Method according to one of claims 4 to 11, characterized in that the packaging material web ( 2 ) with the preformed product portion ( 10 ) is maintained under an inert gas atmosphere when the sealing or adhesive bond (s) on the packaging material web ( 2 ) is / are made. Device for packaging portioned, at least in the processing state liquid or pasty products in a wrapping of a packaging material, in particular for performing a method according to any one of the preceding claims, with - a preforming and feeding device ( 1 ) required for giving up a preformed product portion ( 10 ) is formed on the packaging material; A guide device which is used to feed a packaging material web ( 2 ) in the transport direction (T) of the same to the preforming and feeding device ( 1 ) is trained; - at least one folding device ( 3 . 4 ) used to fold the edges of the packaging material upwards and inwards around the product portion ( 10 ) is formed around; and - a cutting device which is used to cut the packaging material web ( 2 ) transversely to their longitudinal edges ( 2a . 2 B ), characterized in that - the preforming and feeding device ( 1 ) at least one product forming shaft ( 6 ), which is arranged in its feed position above the guide means to the preformed product portion ( 10 ) on the by means of the guide device on the product forming shaft ( 6 ) pasted packaging material web ( 2 to give up; A first folding device ( 3 ), which for folding over the lateral longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) upwards and inwards around the lateral longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) facing longitudinal side surfaces ( 10a . 10b ) of the preformed product portion ( 10 ) around on the product portion ( 10 ) is formed, in the transport direction (T) of the packaging material web ( 2 ) downstream of the preforming and feeding device ( 1 ) is arranged; A second folding device ( 4 ), which for folding over the packaging material of the packaging material web ( 2 ) substantially perpendicular to their lateral longitudinal edges ( 2a . 2 B ) on the transverse side surfaces ( 10d . 10e ) of the preformed product portion ( 10 ) is formed, in the transport direction (T) of the packaging material web ( 2 ) downstream of the first folding device ( 3 ) is arranged; and - the cutting device in the transport direction (T) of the packaging material web ( 2 ) downstream of the second folding device ( 4 ) or in the second folding device ( 4 ) is integrated. Apparatus according to claim 15, characterized in that the preforming and feeding device ( 1 ) at least one downwardly open product forming shaft ( 6 ), which with a substantially vertically displaceable therein stamp ( 7 ) is fitted around a product portion ( 10 ) on the packaging material web ( 2 ). Apparatus according to claim 15 or 16, characterized in that the preforming and feeding device ( 1 ) in the transport direction (T) of the packaging material web ( 2 ) a thread storage device ( 26 ) which is used to apply a tear thread ( 25 ) on the packaging material web ( 2 ) transversely to their longitudinal edges ( 2a . 2 B ) is trained. Device according to one of claims 15 to 17, characterized in that the first folding device ( 3 ) - at least two first folding surfaces ( 12a . 12b ), which in each case in a substantially vertical and parallel to the transport direction (T) of the packaging material web ( 2 ) arranged on both sides of the packaging material web ( 2 ) extend around their longitudinal edges ( 2a . 2 B ) up on the side edges ( 2a . 2 B ) of the packaging material web ( 2 ) facing longitudinal side surfaces ( 10a . 10b ) of the product portion ( 10 ) to fold; the first folding station ( 3 ) - at least two second folding surfaces ( 13a . 13b ) each extending in a substantially horizontal plane from an upper region of a respective first folding surface (Fig. 12a . 12b ) inwards in the direction of the other first folding surface ( 12b . 12a ) to the top of the longitudinal side surfaces ( 10a . 10b ) of the product portion ( 10 ) folded longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) inwards on top ( 10c ) of the product portion ( 10 ) fold. Device according to one of claims 15 to 18, characterized in that the first folding device ( 3 ) a first sealing or gluing device ( 15 ) is assigned to the product serving ( 10 ) folded longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) to be sealed or glued together. Apparatus according to claim 19, characterized in that the first sealing or adhesive device ( 15 ) above the first folding device ( 3 ) and / or in the transport direction (T) of the packaging material web ( 2 ) is arranged downstream of the same and at least two, about a substantially vertical axis rotatable sealing or adhesive rollers ( 16a . 16b ), which the two edge portions of the product on the product ( 10 ) folded longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) between them and under pressure to seal or glue together. Apparatus according to claim 20, characterized in that the sealing or adhesive rollers ( 16a . 16b ) at the same time for transporting the packaging material web ( 2 ) in the transport direction (T). Device according to one of claims 15 to 21, characterized in that the second folding device ( 4 ) at least one pair of cooperating and transversely to the transport direction (T) of the packaging material web ( 2 ) arranged folding beams ( 17a . 17b ), of which the one folding beam ( 17a ) below and the other folding beam ( 17b ) above the packaging material web ( 2 ), and the folding beams ( 17a . 17b ) of a pair substantially vertically toward and away from each other ( 18 ) are, around the central lower section and by means of the first folding device ( 3 ) on the top ( 10c ) a product portion ( 10 ) folded upper portions of the packaging material web ( 2 ) in the transport direction (T) thereof both upstream and downstream of one on the packaging material web ( 2 ) product portion ( 10 ) on the transverse side surfaces ( 10d . 10e ) of the product portion ( 10 ) fold. Apparatus according to claim 22, characterized in that the second folding device ( 4 ) a second sealing or adhesive device is assigned to the transverse to the longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) on the transverse side surfaces ( 10d . 10e ) a product portion ( 10 ) folded sections of the packaging material web ( 2 ) to be sealed or glued together. Apparatus according to claim 22 and 23, characterized in that the second sealing or gluing device in the folding beams ( 17a . 17b ) of the second folding device ( 4 ) is integrated. Device according to one of claims 22 to 24, characterized in that the second folding device ( 4 ) a push-in device ( 41 ), which two in the extension direction of the folding beams ( 17a . 17b ) into the space between them and out of this displaceable ( 42 ) Indenting jaws ( 43a . 43b ) during the folding of the packaging material of the packaging material web ( 2 ) on the transverse side surfaces ( 10d . 10e ) of the preformed product portion ( 10 ) the packaging material substantially perpendicular to the longitudinal edges ( 2a . 2 B ) of the packaging material web ( 2 ) inwards in the direction of the transverse side surfaces ( 10d . 10e ) of the product portion ( 10 ) and to prevent evasion of the packaging material outwardly during folding. Device according to one of claims 22 to 25, characterized in that the cutting device in the folding beams ( 17a . 17b ) of the second folding device ( 4 ) is integrated. Device according to one of claims 22 to 26, characterized in that the folding beams ( 17a . 17b ) at a direction parallel to the transport direction (T) of the packaging material web ( 2 ) movable support ( 19 ), in particular in the form of a respective carrier tape ( 19a . 19b ) are arranged. Apparatus according to claim 27, characterized in that at the parallel to the transport direction of the packaging material web ( 2 ) movable support ( 19 ) arranged folding beams ( 17a . 17b ) at least in their mutually facing folding position at the same time for transporting the packaging material web ( 2 ) in the transport direction (T). Device according to one of claims 15 to 28, characterized in that the second folding device ( 4 ) and the cutting device in the transport direction (T) of the packaging material web ( 2 ) a calibration well ( 20 ) arranged with a vertically displaceable in this, provided in particular with a surface stamping punch ( 21 ) is subordinate. Device according to one of claims 15 to 22, 25, 26, 27 and 28, characterized in that the second folding device ( 4 ) and the cutting device in the transport direction (T) of the packaging material web ( 2 ) a calibration well ( 20 ) arranged with a vertically displaceable in this, provided in particular with a surface stamping punch ( 21 ), wherein the calibration shaft ( 20 ) a second sealing or gluing device is assigned to the transverse to the lateral edges ( 2a . 2 B ) of the packaging material web ( 2 ) on the transverse side surfaces ( 10d . 10e ) a product portion ( 10 ) folded sections of a transported by means of the transport device packaging material ( 2 ) to be sealed or glued together. Device according to one of claims 23 to 30, characterized in that at least the second sealing or adhesive device is arranged in an inert gas chamber.

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