Packaging machine device, packaging machine and packaging method

Abstract

The invention relates to a packaging machine device (56) for a paper packaging (10), in particular a paper flow pack packaging and / or a paper tubular bag packaging, which has at least one fin (12, 22), preferably having at least two opposing fins (12, 22), in a closed state. According to the invention, the packaging machine device (56) has a fin folding unit (14), which is designed such that, after closing a product chamber (16) of the paper packaging (10), in particular filled with a product (104), e.g. a food, it folds up / down outwardly protruding fins (12, 22) of the paper packaging (10) in the direction of the product chamber (16), independently of an interaction with a secondary packaging (96) different from the paper packaging (10).

Description

[0001] Description

[0002] Packaging machine equipment, packaging machine and packaging process

[0003] State of the art

[0004] The invention relates to a packaging machine apparatus according to the preamble of claim 1, a packaging machine according to claim 25 and a packaging method according to the preamble of claim 27.

[0005] Packaging machines for paper packaging are already known that pack products into product compartments within the paper packaging and then seal the packaging with longitudinal and transverse seams, forming a fin and two fins. Several individual paper packages are then often combined, for example with chocolate bars or similar products, into multipacks or other outer packaging, frequently U-shaped cartons wrapped in film or sealable cardboard boxes. In contrast to plastic packaging, the fins and fins of such paper packaging, especially on the paper triangles of the fins, are less flexible and therefore stiffer. This can result in an undesirably increased space requirement for the paper packaging, for example compared to plastic flow packs or plastic tubular bags.

[0006] Disclosure of the invention

[0007] The invention relates to a packaging machine device for paper packaging, in particular paper flow pack packaging and / or paper tubular bag packaging, which in a closed state has at least one fin, preferably with at least two opposing fins.

[0008] It is proposed that the packaging machine device include a fin-folding unit configured to unfold / fold the outwardly projecting fin of the paper packaging after the product chamber of the paper packaging, particularly one filled with a product such as a foodstuff, has been closed. This unfolding / folding occurs independently of any interaction with a secondary packaging other than the paper packaging, especially outer packaging or multipack packaging, and preferably in a controlled manner. This advantageously minimizes the space required for the paper packaging, particularly in subsequent outer packaging or in a multipack. Furthermore, it facilitates easier insertion of the product-filled paper packaging into the outer packaging / multipack.It is advantageous to ensure that the paper packaging or barrier layers inserted into the paper packaging are not damaged when being placed in the outer packaging / multipack, e.g. by uncontrolled folding of the fins in different directions.

[0009] The packaging machine device is, in particular, at least a part of a higher-level packaging machine, for example, a fin folding station of the packaging machine. Alternatively, the packaging machine device can also be a standalone packaging machine or a standalone folding machine downstream of a packaging machine. In particular, the packaging machine device is integrated into / interposed within an automated conveying system of a packaging plant. Preferably, paper packaging is fed into the packaging machine device, which already contains a packaged product in the product chamber and in which, in particular, the fins protrude laterally (at least substantially straight).Preferably, the packaging machine outputs paper packaging that no longer has straight, laterally projecting fins, but instead preferably has fins bent upwards or downwards. A paper package is preferably made at least predominantly from one or more papers or from one or more paper-based materials. The paper package can be formed at least partially from a multi-layered base material, which, for example, in addition to a paper or cardboard layer, includes a plastic layer, an aluminum layer (e.g., as a moisture, ambient air, and / or light barrier), and / or a sealing layer to increase shelf life. Preferably, the entire paper package is made from a single (single- or multi-layered) sheet of paper or a paper tube. The paper packaging is preferably food packaging, such as for a bar product.However, the paper packaging could also be non-food packaging, e.g., packaging for a medical device, a cleaning product, a hygiene product, a cosmetic product, and much more.

[0010] The term "fin" of a paper package refers specifically to a sealed area of ​​the packaging created by joining and sealing the edges of the packaging material. The fin is formed when both edges of a flexible packaging film (here: paper film, but often also plastic or aluminum) are overlapped and then welded or glued. The resulting seam holds the paper packaging together and ensures that the product compartment is airtight, secure, and / or stably sealed. In addition to the fin, or the two fins at opposite ends, the paper packaging typically also has a fin, usually located on the back. The fin folding mechanism is designed to unfold the fin(s) towards the side of the packaging, along with the fin.Alternatively, one or both fins could be unfolded in the opposite direction, i.e., the direction without a fin. "Provided for" and / or "configured" should be understood to mean specifically programmed, designed, and / or equipped. The fact that an object is intended and / or configured for a specific function should be understood to mean, in particular, that the object fulfills and / or performs this specific function in at least one application and / or operating state. The fact that the fin folding unit is configured to unfold and / or refold the fin "independently of any interaction with a secondary packaging other than the paper packaging" should be understood to mean, in particular, that the unfolding and / or refolding is not achieved by simply inserting or "squeezing" the paper packaging into appropriately sized secondary packaging.This would result in undesirable, uncontrolled folding of the fins. Preferably, the unfolding and / or refolding by the fin folding unit takes place outside of and / or separately from secondary packaging. In particular, the fin folding unit is designed to produce the folding of the fins exclusively by means of specially designed fin folding elements. Specifically, the fin folding unit is designed to perform the folding of the fins before the paper packaging is placed inside a secondary package.

[0011] Furthermore, it is proposed that the fin folding unit be configured to produce a defined unfolding / folding of the fin, in which the fin, in particular a principal extension plane of the fin, projects obliquely from the product chamber of the paper packaging relative to a principal extension plane of the product chamber, or at least lies substantially parallel to a side wall of the product chamber of the paper packaging. This advantageously saves space. Advantageously, the filled paper packagings processed in this way can be easily and safely inserted into correspondingly smaller secondary packagings. A "principal extension plane" of a component is understood to be, in particular, a plane that is parallel to a largest side face of the smallest imaginary cuboid that just completely encloses the component, and in particular, passes through the center of the cuboid.In essence, "parallel" here refers in particular to an alignment of a direction relative to a reference direction, especially in a plane, wherein the direction has a deviation from the reference direction of, in particular, less than 8°, advantageously less than 5°, and most advantageously less than 2°. "Oblique" in particular means non-parallel and non-perpendicular.

[0012] Furthermore, it is proposed that the fin folding unit be configured to reduce the maximum horizontal extent of the fin parallel to a main plane of extension of the product chamber of the paper packaging by at least 50%, preferably at least 75%, by unfolding / folding the fin. This advantageously results in space savings. Advantageously, the filled paper packaging processed in this way can be easily and safely inserted into correspondingly smaller secondary packaging. It is further proposed that the fin folding unit be configured to simultaneously, and preferably identically, unfold / fold the fin and another fin, which is arranged in a main plane of extension of the product chamber of the paper packaging on a side of the product chamber opposite the first fin, towards the product chamber of the paper packaging. This advantageously results in high efficiency.Furthermore, maximum space savings can be achieved to their advantage. A more uniform shape for both fins of the paper packaging can also be achieved, which can facilitate / improve handling, especially robotic handling, of the paper packaging.

[0013] Furthermore, it is proposed that the fin folding unit be configured to automatically generate the unfolding / folding of the fin as the paper packaging passes through a folding area of ​​the fin folding unit along a linear transport direction. This advantageously allows for simple integration of the packaging machine device into a packaging plant / existing production and / or packaging process. Specifically, the paper packaging passes through the folding area of ​​the fin folding unit in a transverse direction. A movement vector of the paper packaging preferably points perpendicular to a connecting line between the two fins and parallel to a principal plane of extension of the two fins and / or the paper packaging as a whole.

[0014] Furthermore, it is proposed that at least those components of the fin folding unit designed to contact the paper packaging during an unfolding / folding process be free of moving parts. This advantageously allows for a simple and / or cost-effective design / construction. A high degree of maintenance-free operation can also be advantageously achieved. Preferably, the fin folding elements of the fin folding unit, and in particular the entire fin folding unit, are free of elements that need to be moved during the unfolding / folding process. Preferably, the fin folding unit is free of robot handling elements / gripping elements such as robot grippers or the like. Preferably, the fin folding unit is free of robots.Preferably, the fin folding unit (apart from a conveying system, such as a conveyor belt, for generating the movement of the paper packaging along the linear transport direction) is free of electrically controlled and / or motor-driven components. In particular, the fin folding unit is free of folding, pivoting, sliding, and / or rotating elements.

[0015] It is further proposed that the fin folding unit comprises a first fin folding element and a second fin folding element, wherein the first fin folding element is configured to contact the fin on a first fin side during a fin folding process, in particular the unfolding and / or refolding process, and wherein the second fin folding element is configured to contact the fin on a second fin side of the same fin, different from and opposite the first fin side, during a fin folding process. This allows for an advantageous design. Advantageously, a clearly defined folding action with two-sided support of the folding process can be achieved. In particular, the fin folding unit is free of further fin folding elements provided for folding the same fin. The fin sides are preferably the main surfaces of the fin.The fin sides preferably comprise a top and a bottom of the fin, particularly in the intended transport function, where the paper packaging is moved in a plane of movement parallel to the main extension plane of the paper packaging. The fin folding process is, in particular, the unfolding and / or folding of the fin. The fin folding process specifically generates the unfolding and / or folding of the fin.

[0016] Furthermore, it is proposed that the fin folding elements together form a fin receiving area, which is designed to be traversed by the fin in the longitudinal direction (of the fin receiving area), particularly in the linear transport direction. The fin receiving area is preferably designed and arranged relative to a transport device / conveyor system such that the fin of the paper packaging, moved by the transport device / conveyor system along the linear transport direction, completely passes through the fin receiving area. Alternatively, the paper packaging can remain stationary while the fin receiving area moves. The fin receiving area particularly has a cross-section with a single opening on one side. The fin receiving area preferably forms a kind of rail for guiding the fin during the unfolding and / or folding process.The longitudinal extension direction (of the fin-receiving area) is, in particular, at least essentially parallel to the linear transport direction.

[0017] If the fin-receiving area has a cross-section that changes, preferably continuously, along its longitudinal direction, a slow / gradual folding can advantageously be achieved. This can advantageously prevent damage to the paper packaging and / or unwanted displacement of the paper packaging during the unfolding and / or folding process of the fin. The cross-section of the fin-receiving area is, in particular, perpendicular to the intended ideal linear transport direction.

[0018] If, in addition, the fin passing through the fin-receiving area undergoes a gradual folding, particularly towards the product chamber of the paper packaging, due to a changing cross-sectional shape of the fin-receiving area and / or a changing transverse position of a cross-sectional opening of the fin-receiving area, an optimal and / or gentle folding of the fin can be advantageously achieved. Damage to the paper packaging and / or unwanted displacement of the paper packaging during the unfolding and / or folding process of the fin can be advantageously avoided. The transverse position is, in particular, a position within the cross-sectional planes relative to each other. A displacement of the transverse position of the cross-sectional opening, i.e.,The contours of the walls bounding the fin-receiving area, as seen in the various cross-sections along the longitudinal direction of the fin-receiving area, indicate a curve within the fin-receiving area or an enlargement / reduction of the fin-receiving area. Furthermore, it is proposed that the first fin folding element has a fin-folding edge that contacts an upper surface of the fin, particularly in a central region of the fin (viewed in the direction the fin extends). This advantageously allows for the determination of the position of a folding point (parallel to the direction of transport). Advantageously, this enables an optimized, and in particular, reproducible folding process. The upper surface of the fin is specifically the side of the fin facing away from the support surface of the paper packaging on which the fin, moving in the direction of transport, rests.Preferably, the upper surface of the fin is a side of the paper packaging that is designed without a fin and preferably runs parallel to a main plane of extension of the paper packaging. The fin's folding edge preferably has a rounded cross-sectional profile. Alternatively, the folding edge can also have a polygonal or tapered cross-sectional profile.

[0019] Furthermore, it is proposed that the fin folding edge be configured to create an initial crease point where the fin is unfolded / folded, and to guide the crease point during movement of the paper packaging along a linear transport direction. This advantageously allows for controlled, uniform folding of the fins of various paper packages. Specifically, when comparing different cross-sections, the fin folding edge migrates transversely outwards or inwards in the longitudinal direction / transport direction. In particular, when comparing different cross-sections, the fin folding edge migrates transversely in the longitudinal direction / transport direction towards the product chamber of the paper packaging / towards the folding area of ​​the fin folding unit.

[0020] If the fin folding edge in an entry area of ​​the fin folding unit is located further away from a central axis of a product chamber receiving area of ​​the packaging machine device, in which the product chamber of the paper packaging is received during the fin folding process and guided relative to the fin folding elements, particularly in the folding area, than in a central area of ​​the fin folding unit and / or in an exit area of ​​the fin folding unit, the folding process can be advantageously controlled, in particular by initially producing only a small fold, which then increases / intensifies as the paper packaging moves along the transport direction. At the entry area, the paper packaging, moving along the linear transport direction, preferably enters the fin folding unit before the unfolding and / or folding process of the fin.At the exit area, the paper packaging, which has moved along the linear transport direction, preferably emerges from the fin folding unit after the fin has been unfolded and / or folded over. The central axis preferably extends parallel to the transport direction centrally through the fin folding unit, in particular through the folding area of ​​the fin folding unit. The central area is preferably located centrally between the inlet area and the exit area. For example, the central area can comprise approximately 50% of the total longitudinal extent of the fin folding unit / fin folding edge parallel to the longitudinal direction of the fin folding unit, while the inlet area and the exit area each comprise approximately 25% of the total longitudinal extent of the fin folding unit / fin folding edge parallel to the longitudinal direction of the fin folding unit. However, other area divisions are also conceivable.

[0021] Furthermore, it is proposed that the fin folding edge, at least within the entry area, preferably only within the first quarter of its total longitudinal extent as viewed in the transport direction, approximates the central axis of the product chamber receiving area along a longitudinal direction of the first fin folding element. This advantageously optimizes the transition / entry of the paper packaging into the folding area. It also advantageously prevents the paper packaging from shifting or tilting and thus avoids jamming at the entry area. It is conceivable that, following the entry area, the fin folding edge runs at least substantially parallel to the transport direction and / or the central axis of the product chamber receiving area.

[0022] Furthermore, it is proposed that the fin folding edge in the entry and / or exit area of ​​the fin folding unit be positioned further away from the base of the product chamber receiving area of ​​the packaging machine device, in which the product chamber of the paper packaging is received during the fin folding process and guided relative to the fin folding elements, particularly from the base of the folding area, than in the central area of ​​the fin folding unit. This allows for advantageous control of the folding process, especially by initially creating only a small fold, which then increases / strengthens as the paper packaging moves along the transport direction. Advantageously, this prevents the paper packaging from shifting or tilting, and thus from jamming, particularly in the entry area.It is conceivable that the fin's folding edge runs at least essentially parallel to the base after the entrance area. This can be advantageous, particularly in the exit area, as it allows the folded fin to be pressed very closely against the product compartment of the paper packaging.

[0023] If, at least within a part of the entry area, preferably only within a part of a first quarter of the entire longitudinal extent of the fin folding edge as seen in the transport direction, the folding process continuously approaches the bottom of the product chamber receiving area along a longitudinal extent direction of the first fin folding element, and / or if, at least within a part of the exit area, preferably only within a part of a last quarter of the entire longitudinal extent of the fin folding edge as seen in the transport direction, the folding process can be advantageously controlled optimally.

[0024] Furthermore, it is proposed that the second fin folding element has a fin folding surface for contact with, in particular, a planar contact with the underside of the fin. This advantageously allows for a particularly uniform, and therefore gentle, and / or particularly consistent, and therefore reproducible, folding of the fin. The underside of the fin is, in particular, the side of the fin that forms the contact surface of the paper packaging on which the fin, moving in the direction of transport, rests. Preferably, the underside of the fin is the side of the paper packaging formed with the fin and preferably runs parallel to a principal plane of extension of the paper packaging. The fin folding plane preferably has a flat and uncurved cross-sectional profile. Alternatively, however, it is also conceivable that the cross-sectional profile of the fin folding plane has a curvature.In particular, the fin folding plane forms a contact surface for at least a large part of the underside of the fin to lie flat against the surface during the unfolding and / or folding process.

[0025] If the fin's folding surface is designed to ensure a continuous approach of the unfolded / folded fin to the product chamber of the paper packaging during movement of the paper packaging along a linear transport direction, a gentle and / or reproducible unfolding and / or folding of the fin can be advantageously achieved. Damage to and / or build-up of paper packaging can be advantageously avoided.

[0026] In this context, it is proposed that the fin folding surface form an inclined fin folding plane extending from an entry area of ​​the fin folding unit relative to a horizontal plane, in particular the packaging machine device (parallel to a transport plane and / or the floor of the folding area), and relative to a vertical plane (perpendicular to the transport plane and / or the floor of the folding area). This advantageously allows for a simple yet effective design.

[0027] Furthermore, if the fin folding plane is designed such that an angle of inclination, in particular of a cross-section perpendicular to the transport direction, measured between a wall of the fin folding plane and a horizontal plane / a bottom plane of the fin folding unit, increases from the entrance area towards the central area of ​​the fin folding unit, a continuous and gentle unfolding and / or folding of the fin can be advantageously achieved.

[0028] It is further proposed that the fin folding surface in the starting area of ​​the fin folding unit forms a fin pressure plane, particularly one directly adjoining the inclined fin folding plane. This pressure plane is designed to press the fin, which has already been folded (particularly through an interaction between the fin folding plane and a fin folding edge of the first fin folding element), against the product chamber of the paper packaging. This advantageously minimizes the fin's footprint. It also allows for a particularly close proximity of the fin's side surfaces to the product chamber. The fin pressure plane is preferably, and in particular only, perpendicular to the horizontal plane and parallel to the vertical plane at at least one end edge. The fin pressure plane is preferably arranged in a longitudinal region of the fin folding unit where the fin folding edge has already ended.The fin pressure plane is preferably arranged in the longitudinal direction of the fin receiving area behind the fin receiving area, and preferably adjacent to the fin receiving area.

[0029] Furthermore, it is proposed that the fin folding unit have a longitudinal adjustment device by means of which the first fin folding element and the second fin folding element can be adjusted relative to each other at least longitudinally, in particular parallel to the linear transport direction, preferably in the longitudinal direction of the fin receiving area. This advantageously allows for a high degree of flexibility. Paper packaging with fins of different dimensions can advantageously be processed using the packaging machine device. Alternatively or additionally, a transverse adjustment device can also be provided by means of which the first fin folding element and the second fin folding element can be adjusted relative to each other at least transversely, in particular perpendicular to the linear transport direction, preferably perpendicular to the longitudinal direction of the fin receiving area.

[0030] Furthermore, it is proposed that the fin folding unit comprises a second first fin folding element mirrored to the first fin folding element and a second fin folding element mirrored to the second fin folding element. These additional folding elements are arranged on opposite sides of a paper packaging transport area of ​​the packaging machine device relative to the first first fin folding element and are configured to simultaneously unfold / fold over another fin of the paper packaging, which is located in a principal extension plane of the product chamber of the paper packaging on the side of the product chamber opposite the first fin. This advantageously allows for high efficiency. Furthermore, the space required for the paper packaging, particularly in subsequent outer packaging or in a multipack, can be advantageously minimized.Advantageously, the paper packaging filled with products can be inserted more easily into the outer packaging / multipack. Each of the fin folding units preferably forms a counterpart for the other fin folding unit, which prevents the paper packaging from shifting during the unfolding and / or folding process, particularly in a direction perpendicular to the transport direction and parallel to the ground plane.

[0031] If the fin folding unit has a spacer adjustment device that allows the distance between the fin folding elements to be adjusted, a high degree of flexibility can be advantageously achieved. This also allows the packaging machine to process paper packaging of varying sizes, particularly lengths.

[0032] Furthermore, a packaging machine, in particular a tubular bag packaging machine and / or a flow pack packaging machine, is proposed, comprising a sealing device for producing at least the fin with the paper triangle and the transverse seam, and the packaging machine equipment. This advantageously minimizes the space required for the paper packaging, especially in subsequent outer packaging or in a multipack. It also facilitates easier insertion of the product-filled paper packaging into the outer packaging / multipack. Advantageously, it ensures that the paper packaging or any barrier layers incorporated into the paper packaging are not damaged during insertion into the outer packaging / multipack. The sealing device can be any type of sealing machine known from the prior art for producing transverse seams for the fins of paper packaging.If the packaging machine has a secondary packaging unit which is designed to place the paper packaging with the unfolded / folded fins, in particular following a fin folding process using the fin folding unit, into a secondary packaging having a U-profile, different from the paper packaging, in such a way that the unfolded / folded fins are at least partially enclosed by each side wall of the U-profile, then compact multipacks or the like can be advantageously produced.

[0033] Furthermore, a packaging method is proposed for paper packaging, in particular paper flow pack packaging and / or paper tubular bag packaging, which in a closed state has at least one fin, preferably with at least two opposing fins, particularly by means of the packaging machine device and / or by means of the packaging machine, wherein at least one fin of the paper packaging, projecting outwards after the closing of a product chamber of the paper packaging, in particular previously filled with a product, e.g. a foodstuff, is unfolded / folded towards the product chamber by means of the fin folding unit, independently of any interaction with a secondary packaging other than the paper packaging. This advantageously allows the benefits already described in connection with the packaging machine device to be achieved.

[0034] The packaging machine device, the packaging machine, and the method according to the invention are not to be limited to the application and embodiment described above. In particular, the packaging machine device, the packaging machine, and the method according to the invention may, to achieve a functionality described herein, have a different number of individual elements, components, units, and process steps than that specified herein. Furthermore, values ​​within the specified limits of the value ranges stated in this disclosure are also to be considered disclosed and freely usable. Drawing

[0035] Further advantages will become apparent from the following description of the drawing. The drawing illustrates an embodiment of the invention. The drawing, the description, and the claims contain numerous features in combination. A person skilled in the art will expediently consider the features individually and combine them into meaningful further combinations.

[0036] They show:

[0037] Fig. 1 A schematic representation of a packaging machine with a packaging machine device,

[0038] Fig. 2a is a schematic perspective view of the packaging machine device with a fin folding unit, Fig. 2b is another schematic perspective view of a section of the packaging machine device with the fin folding unit having a first fin folding element and a second fin folding element,

[0039] Fig. 2c is a schematic perspective view of the second fin folding element,

[0040] Fig. 2d is a schematic perspective top view of the packaging machine device with the fin folding unit, with five section planes A, B, C, D and E indicated for the representations of figures 3a to 3e.

[0041] Fig. 3a shows a schematic vertical sectional view through the packaging machine device with the fin folding unit along the cutting plane A,

[0042] Fig. 3b shows a schematic vertical sectional view through the packaging machine device with the fin folding unit along the cutting plane B,

[0043] Fig. 3c is a schematic vertical sectional view through the packaging machine device with the fin folding unit along the cutting plane C, Fig. 3d is a schematic vertical sectional view through the packaging machine device with the fin folding unit along the cutting plane D,

[0044] Fig. 3e shows a schematic vertical sectional view through the packaging machine device with the fin folding unit along the cutting plane E,

[0045] Fig. 4 schematically shows a folding process of a fin of a paper package using the fin folding unit and

[0046] Fig. 5 shows a schematic flowchart of a packaging process for paper packaging with fins.

[0047] Description of the exemplary embodiment

[0048] Figure 1 schematically shows a packaging machine 88. The packaging machine 88 is designed as an example flow-pack packaging machine. The packaging machine 88 has a sealing device 90. The sealing device 90 is configured to seal a product 104 wrapped in paper material 102 and thereby produce a paper package 10 for the product 104. The sealing device 90 produces, in a known manner, a fin with a longitudinal seam (not shown) and two opposing fins 12, 22, each with at least one transverse seam and a paper triangle. The paper package 10 has a product chamber 16. The product 104 is arranged inside the product chamber 16. The paper packages 10 exiting the sealing device 90 have fins 12, 22 on both sides, each projecting straight out from the product chamber 16. The product chamber 16 has a main extension plane 20.After leaving the sealing device 90, the fins 12, 22 of the paper packaging 10 extend away from the product chamber 16 of the paper packaging 10 in the main extension plane 20. After leaving the sealing device 90, the fins 12, 22 of the paper packaging 10 have the maximum horizontal extension 24 shown in Figure 1.

[0049] The packaging machine 88 includes a packaging machine device 56. The packaging machine device 56 is designed for further manipulation of the already sealed paper packaging 10, i.e., the packaging 10 is closed. In its closed state, the paper packaging 10 has two opposing fins 12, 22. The packaging machine device 56 includes a fin folding unit 14. The fin folding unit 14 is configured to unfold and / or fold the outwardly projecting fins 12, 22 of the paper packaging 10 towards the product chamber 16 after the product chamber 16 of the paper packaging 10, which is filled with the product 104 (e.g., a foodstuff), has been closed. The unfolding and / or folding occurs independently of any interaction with a secondary packaging 96 that is different from the paper packaging 10.The unfolding and / or folding takes place independently of an outer packaging unit 92 of the packaging machine 88. The unfolding and / or folding takes place before the paper packaging 10 is fed into the outer packaging unit 92 of the packaging machine 88.

[0050] The fin folding unit 14 is configured to produce a defined unfolding / folding of the fin 12, 22, in which the fin 12, 22 projects obliquely from the product chamber 16 of the paper packaging 10 relative to the main extension plane 20 of the product chamber 16 of the paper packaging 10, or at least lies substantially parallel to a side wall 18 of the product chamber 16 of the paper packaging 10. The fin folding unit 14 is configured to produce a reduced maximum horizontal extension 24' of the fin 12, 22 parallel to the main extension plane 20 of the product chamber 16 of the paper packaging 10. By unfolding / refolding the fin 12, 22 using the fin folding unit 14, the original maximum horizontal extent 24 of the fin 12, 22 is reduced by at least 50% to the new maximum horizontal extent 24' of the fin 12, 22.The fin folding unit 14 is also designed to unfold / fold the fin 12 and another fin 22, which is arranged in the main extension plane 20 of the product chamber 16 of the paper packaging 10 on the side of the product chamber 16 opposite the fin 12, simultaneously and in the same manner in the direction of the product chamber 16 of the paper packaging 10.

[0051] The packaging machine 88 includes the outer packaging unit 92. The outer packaging unit 92 is configured to insert the paper packaging 10, with the fins 12, 22 unfolded / folded by the fin folding unit 14, into the secondary packaging 96 following a fin folding operation by the fin folding unit 14. The secondary packaging 96 is different from and separate from the paper packaging 10. The secondary packaging 96 has a U-profile 94 and is preferably made of cardboard. The outer packaging unit 92 is configured to insert the paper packaging 10, with the unfolded / folded fins 12, 22, into the secondary packaging 96 such that the unfolded / folded fins 12, 22 are at least partially enclosed by each of the side walls 98, 100 of the U-profile 94. However, the secondary packaging 96 could also be designed differently, e.g. with profiles different from a U-profile 94.Subsequently, the outer packaging unit 92 can be designed to surround the combination of paper packaging(s) 10 and secondary packaging 96 with a further covering 106, e.g. a film.

[0052] Figures 2a and 2b each show schematic perspective views of the packaging machine device 56 with the fin folding unit 14. The paper packages 10 enter the fin folding unit 14 from an inlet side. The paper packages 10 move along a linear transport direction 28. The paper packages 10 pass through the fin folding unit 14 along the linear transport direction 28. The paper packages 10 are arranged such that the outwardly projecting fins 12, 22 are positioned to the right and left of the transport direction 28. The paper packages 10 are fed transversely (not longitudinally) into the fin folding unit 14. The transport of the paper packages 10 can be accomplished, for example, by means of a conveyor belt, a pusher, or the like (not shown). The fin folding unit 14 has a folding area 26.Within the folding area 26 of the fin folding unit 14, the fins 12 and 22 are unfolded / folded. The fin folding unit 14 is configured to automatically generate the unfolding / folding of the fins 12 and 22 while the paper packaging 10 passes through the folding area 26 of the fin folding unit 14 along a linear transport direction 28. The fin folding unit 14 comprises a plurality of components. All components, in particular those components of the fin folding unit 14 described below, especially those components of the fin folding unit 14 that are configured to contact the paper packaging 10 during an unfolding / folding process / while it is in the folding area 26, are, apart from the conveyor systems, which are not to be considered part of the fin folding unit 14, designed to be free of moving parts.

[0053] The fin folding unit 14 has a first fin folding element 30. The fin folding unit 14 has a second fin folding element 40. The first fin folding element 30 is configured to contact the fin 12, 22 on a first fin side 32 during the fin folding process. The second fin folding element 40 is configured to contact the fin 12, 22 on a second fin side 42 of the same fin 12, 22 during the fin folding process, opposite the first fin side 32 (see also Figures 3a to 3d). The fin folding unit 14 has a longitudinal adjustment device 78. The longitudinal adjustment device 78 enables a relative adjustment of the first fin folding element 30 and the second fin folding element 40 at least in the longitudinal direction 80 of the fin folding elements 30, 40 / of the folding area 26 to each other.One longitudinal adjusting device 78 is exemplified by mutually interacting slotted screw bolt combinations. However, alternative longitudinal adjusting devices 78, e.g., by extendable or add-on elements, are also conceivable.

[0054] The fin folding unit 14 has a further first fin folding element 82 that is mirrored to the first fin folding element 30. The fin folding unit 14 has a further second fin folding element 84 that is mirrored to the second fin folding element 40. The further folding elements 82, 84 are arranged on opposite sides of a paper packaging transport area 87 of the packaging machine device 56 / of the folding area 26 of the fin folding unit 14, relative to the folding elements 30, 40. The further folding elements 82, 84 are configured to simultaneously unfold / fold over the further fin 22 of the paper packaging 10, which is arranged in the main extension plane 20 of the product chamber 16 of the paper packaging 10 on a side of the product chamber 16 opposite the fin 12. The fin folding unit 14 has a spacing adjustment device 86.The spacing adjustment device 86 enables an adjustment of a distance 108 between the fin folding elements 30, 40 and the further fin folding elements 82, 84.

[0055] The fin folding elements 30, 40 (as well as the further fin folding elements 82, 84 together) form a fin receiving area 34. The fin receiving area 34 is designed to be traversed by the respective fin 12, 22 in the longitudinal direction 36, in particular in the linear transport direction 28. The first fin folding element 30 has a fin folding edge 44. The fin folding edge 44 is designed to make contact with a top surface 46 of the respective fin 12, 22 in a central region of the fin 12, 22 (see also Figs. 3a to 3d). The fin folding edge 44 is designed to create an initial fold 48 (see Fig. 3a) at which the fin 12, 22 is unfolded / folded. The fin-folding edge 44 is designed to guide the fold point 48 (see Fig. 3a to 3d or Fig. 4) during the movement of the paper packaging 10 along the linear transport direction 28.

[0056] The fin folding edge 44 is located further away from a central axis 52 of a product chamber receiving area 54 of the packaging machine device 56, in which the product chamber 16 of the paper packaging 10 is received during the fin folding process and guided relative to the fin folding elements 30, 40, and / or the folding area 26, than in a central area 58 of the fin folding unit 14. The fin folding edge 44 is located further away from the central axis 52 in the entry area 50 of the fin folding unit 14 than in an exit area 60 of the fin folding unit 14. The fin folding edge 44 is designed such that, at least within the entry area 50, it extends along a longitudinal direction 62 of the first fin folding element 30 relative to the central axis 52. the product chamber intake area 54 approaches. The fin folding edge 44 is bent outwards at the entrance area 50.The fin folding edge 44 is bent away from the folding area 26 at the entrance area 50. The fin folding edge 44 is located further away from a base 64 of the product chamber receiving area 54 of the packaging machine device 56 / of the folding area 26 of the fin folding unit 14 in the entry area 50 of the fin folding unit 14 than in the central area 58 of the fin folding unit 14. The fin folding edge 44 is also located further away from a base 64 of the product chamber receiving area 54 of the packaging machine device 56 / of the folding area 26 of the fin folding unit 14 in the exit area 60 of the fin folding unit 14 than in the central area 58 of the fin folding unit 14. At least within a portion of the entry area 50, the fin folding edge 44 approaches the base 64 of the product chamber receiving area continuously along the longitudinal extension direction 62 of the first fin folding element 30. 54 / of the folding area 26.The fin folding edge 44 moves continuously away from the bottom 64 of the product chamber receiving area 54 / the folding area 26, at least within part of the starting area 60, along the longitudinal extension direction 62 of the first fin folding element 30. In the central area 58 of the fin folding unit 14, the fin folding edge 44 maintains a distance from the bottom 64 of the product chamber receiving area 54 / the folding area 26 that is at least substantially constant.

[0057] The second fin folding element 40 (see in particular Figure 2c) has a fin folding surface 66. The fin folding surface 66 is designed for planar contact with an underside 68 of the fin 12. The fin folding surface 66 deflects the fin 12 towards the product chamber 16 of the paper packaging 10 during the fin folding process. The fin folding surface 66 is configured to ensure that the unfolded / folded fin 12 continuously approaches the product chamber 16 of the paper packaging 10 as the paper packaging 10 moves along the linear transport direction 28. For this purpose, the fin folding surface 66 forms a fin folding plane 72 extending from an entry area 50 of the fin folding unit 14 and inclined relative to both a horizontal and a vertical plane.The fin folding plane 72 is designed such that an angle of inclination 74, measured between a wall of the fin folding plane 72 and a horizontal plane / bottom plane 70 (of the folding area 26) of the fin folding unit 14, increases (continuously) from the entrance area 50 towards the central area 58 of the fin folding unit 14. The fin folding surface 66 forms a fin pressure plane 76 directly adjoining the inclined fin folding plane 72 in the exit area 60 of the fin folding unit 14 (see Fig. 2c). The fin pressure plane 76 is designed to press the already folded fin 12, formed by an interaction between the fin folding plane 72 and the fin folding edge 44 of the first fin folding element 30, against the product chamber 16 of the paper packaging 10.

[0058] Figures 3a to 3e each show different sections perpendicular to the transport direction 26 through the fin folding unit 14. The respective section planes A (Fig. 3a), B (Fig. 3b), C (Fig. 3c), D (Fig. 3d), and E (Fig. 3e) are indicated in Figure 2d, which shows a schematic perspective view of the packaging machine device 56. The fin receiving area 34 has a cross-section 38. The cross-section 38, in particular a cross-sectional opening / cross-sectional contour of the cross-section 38, changes continuously along the longitudinal direction 36 of the fin receiving area 34. The angle of inclination 74 increases from the inlet area 50 to the outlet area 60. An interruption of the cross-sectional opening / cross-sectional contour of the cross-section 38, through which the fin 12 is inserted into the fin receiving area 34, decreases in size from the entrance area 50 to the central area 58.The interruption of the cross-sectional opening / contour of the cross-section 38 increases from the central region 58 to the end region. The fin 12, 22 passing through the fin-receiving area 34 undergoes a gradual folding towards the product chamber 16 of the paper packaging 10 due to the changing cross-sectional shape of the cross-section 38 of the fin-receiving area 34 and / or due to the changing transverse position of the cross-sectional opening of the cross-section 38 of the fin-receiving area 34 (displacement of the left wall to the right between Figures 3a and 3e).

[0059] Figure 4 schematically shows the folding process of the fin 12. The fin folding edge 44 is indicated by a circle. Following the cross-section 38 in the direction of transport 28, the fin folding edge 44 moves towards a side wall 18 of the product compartment 16 of the paper packaging 10. The crease 48 moves along with it, and the fin 12 gets closer and closer to the side wall 18 of the product compartment 16.

[0060] Figure 5 shows a schematic flowchart of a packaging process for the paper packaging 10, which, when closed, has fins 12 and 22. The packaging process can be carried out using the packaging machine 88, which includes the packaging machine device 56. In at least one process step 110, the product 104 is wrapped in the paper material 102. In at least one process step 120, the paper material 102 is closed / sealed by means of the sealing device 90. This creates the fins 12 and 22. The paper packaging 10, filled with the product 104 and sealed after this process step 120, has the outwardly projecting fins 12 and 22.In at least one process step 130, the outwardly projecting fin 12, 22 of the paper packaging 10 is unfolded and / or folded towards the product chamber 16 by means of the fin folding unit 14 and independently of any interaction with the secondary packaging 96, which is different from the paper packaging 10. In at least one process step 140, the paper packaging 10 with the unfolded and / or folded fins 12, 22 is inserted from the outer packaging unit 92 into the secondary packaging 96. Thereafter, the unfolded and / or folded fins 12, 22 of the paper packaging 10 rest against each of the side walls 98, 100 of the U-profile 94 of the secondary packaging 96. This step can be repeated several times, so that afterwards a plurality of paper packagings 10 with folded and / or folded fins 12, 22 are lined up next to each other in the second packaging 96.In at least one process step 150, the combination of the plurality of paper packagings 10, each containing a product 104, and the secondary packaging 96 is enclosed by a cover 106 to form a multipack 109 (see Fig. 1).

Claims

Claims 1. Packaging machine device (56) for a paper packaging (10), in particular a paper flow pack packaging and / or a paper tubular bag packaging, which in a closed state has at least one fin (12, 22), preferably with at least two opposing fins (12, 22), characterized by a fin folding unit (14) which is configured to unfold / fold the outwardly projecting fin (12, 22) of the paper packaging (10) after a product chamber (16) of the paper packaging (10) filled, in particular with a product (104), e.g. a foodstuff, has been closed, independently of any interaction with a secondary packaging (96) different from the paper packaging (10).

2. Packaging machine device (56) according to claim 1, characterized in that the fin folding unit (14) is configured to produce a defined unfolding / folding of the fin (12, 22) in which the fin (12, 22) is inclined relative to a principal extension plane (20) of the product chamber (16) of the paper packaging (10) or at least substantially parallel to a side wall (18) of the product chamber (16) of the paper packaging (10).

3. Packaging machine device (56) according to claim 1 or 2, characterized in that the fin folding unit (14) is configured to reduce a maximum horizontal extent (24, 24') of the fin (12, 22) parallel to a main extent plane (20) of the product chamber (16) of the paper packaging (10) by unfolding / folding the fin (12, 22) by at least 50%.

4. Packaging machine device (56) according to one of the preceding claims, characterized in that the fin folding unit (14) is configured to unfold / fold the fin (12) and a further fin (22), which is arranged in a main extension plane (20) of the product chamber (16) of the paper packaging (10) on a side of the product chamber (16) opposite the fin (12), simultaneously, and preferably in the same manner, in the direction of the product chamber (16) of the paper packaging (10).

5. Packaging machine device (56) according to one of the preceding claims, characterized in that the fin folding unit (14) is configured to automatically generate the unfolding / folding of the fin (12, 22) while the paper packaging (10) passes a folding area (26) of the fin folding unit (14) along a linear transport direction (28).

6. Packaging machine device (56) according to one of the preceding claims, characterized in that at least the components of the fin folding unit (14) which are designed to touch the paper packaging (10) during an unfolding / folding process are free of moving parts.

7. Packaging machine device (56) according to one of the preceding claims, characterized in that the fin folding unit (14) has a first fin folding element (30) and a second fin folding element (40), wherein the first fin folding element (30) is configured to touch the fin (12, 22) during a fin folding process on a first fin side (32) of the fin (12, 22) and wherein the second fin folding element (40) is configured to touch the fin (12, 22) during the fin folding process on a second fin side (42) of the same fin (12, 22) that is different from and opposite the first fin side (32).

8. Packaging machine device (56) according to claim 7, characterized in that the fin folding elements (30, 40) together form a Form a fin receiving area (34) which is designed to be traversed by the fin (12, 22) in the longitudinal direction (36), in particular in a linear transport direction (28).

9. Packaging machine device (56) according to claim 8, characterized in that the fin receiving area (34) has a cross-section (38) that changes, preferably continuously, along the longitudinal extension direction (36) of the fin receiving area (34).

10. Packaging machine device (56) according to claim 9, characterized in that the fin (12, 22) passing through the fin receiving area (34) undergoes a gradual folding, in particular towards the product chamber (16) of the paper packaging (10), by means of a changing cross-sectional shape of the cross-section (38) of the fin receiving area (34) and / or by means of a changing transverse position of a cross-sectional opening of the cross-section (38) of the fin receiving area (34).

11. Packaging machine device (56) according to one of claims 7 to 10, characterized in that the first fin folding element (30) has a fin folding edge (44) for contacting a top surface (46) of the fin (12, 22), in particular in a central area of ​​the fin (12, 22).

12. Packaging machine device (56) according to claim 11, characterized in that the fin folding edge (44) is configured to generate an initial crease point (48) at which the fin (12, 22) is unfolded / folded over and to guide the crease point (48) during a movement of the paper packaging (10) along a linear transport direction (28).

13. Packaging machine device (56) according to one of claims 11 or 12, characterized in that the fin folding edge (44) in an entry area (50) of the fin folding unit (14) is further from a central axis (52) of a product chamber receiving area (54) of the packaging machine device (56), in which the product chamber (16) of the Paper packaging (10) is picked up during the fin folding process and guided relative to the fin folding elements (30, 40), is removed, as in a central area (58) of the fin folding unit (14) and / or in an exit area (60) of the fin folding unit (14).

14. Packaging machine device (56) according to claim 13, characterized in that the fin folding edge (44) approaches the central axis (52) of the product chamber receiving area (54) at least within the entry area (50), preferably only within a first quarter of a total longitudinal extension of the fin folding edge (44) seen in the transport direction (28), along a longitudinal extension direction (62) of the first fin folding element (30).

15. Packaging machine device (56) according to one of claims 11 to 14, characterized in that the fin folding edge (44) is located further away from a bottom (64) of a product chamber receiving area (54) of the packaging machine device (56) in an entry area (50) and / or in an exit area (60) of the fin folding unit (14), in which the product chamber (16) of the paper packaging (10) is received during the fin folding process and guided relative to the fin folding elements (30, 40), than in a central area (58) of the fin folding unit (14).

16. Packaging machine device (56) according to claim 15, characterized in that the fin folding edge (44) approaches the bottom (64) of the product chamber receiving area (54) continuously, at least within a part of the inlet area (50), preferably only within a part of a first quarter of a total longitudinal extent of the fin folding edge (44) as seen in the transport direction (28), along a longitudinal extent direction (62) of the first fin folding element (30), and / or that the fin folding edge (44) approaches the bottom (64) of the product chamber receiving area (54) continuously, at least within a part of the outlet area (60), preferably only within a part of a last quarter of a total longitudinal extent of the fin folding edge (44) as seen in the transport direction (28), along a longitudinal extent direction (62) of the first fin folding element (30), Folding element (30) seen continuously from the bottom (64) of the product chamber receiving area (54).

17. Packaging machine device (56) according to one of claims 7 to 16, characterized in that the second fin folding element (40) has a fin folding surface (66) for, in particular planar, contacting of an underside (68) of the fin (12, 22).

18. Packaging machine device (56) according to claim 17, characterized in that the fin folding surface (66) is configured to allow the unfolded / folded fin (12, 22) to continuously approach the product chamber (16) of the paper packaging (10) during movement of the paper packaging (10) along a linear transport direction (28).

19. Packaging machine device (56) according to claim 17 or 18, characterized in that the fin folding surface (66) forms a fin folding plane (72) extending from an entrance area (50) of the fin folding unit (14) and inclined relative to a horizontal plane and relative to a vertical plane.

20. Packaging machine device (56) according to claim 19, characterized in that the fin folding plane (72) is designed such that an angle of inclination (74) measured between a wall of the fin folding plane (72) and a horizontal plane / a bottom plane (70) of the fin folding unit (14) increases from the inlet area (50) towards a central area (58) of the fin folding unit (14).

21. Packaging machine device (56) according to one of claims 17 to 20, characterized in that the fin folding surface (66) in an exit region (60) of the fin folding unit (14) forms a fin pressing surface (76), in particular directly adjoining the inclined fin folding plane (72), which is configured to press the already folded fins, in particular by an interaction between the fin folding plane (72) and a fin folding edge (44) of the first fin folding element (30). Press the fin (12, 22) against the product chamber (16) of the paper packaging (10).

22. Packaging machine device (56) according to one of claims 7 to 21, characterized in that the fin folding unit (14) has a longitudinal adjusting device (78) by means of which the first fin folding element (30) and the second fin folding element (40) are adjustable relative to each other at least in the longitudinal direction (80).

23. Packaging machine device (56) according to one of claims 7 to 22, characterized in that the fin folding unit (14) has a further first fin folding element (82) mirrored to the first fin folding element (30) and a further second fin folding element (84) mirrored to the second fin folding element (40), wherein the further folding elements (82, 84) are arranged on opposite sides of a paper packaging transport area (87) of the packaging machine device (56) relative to the folding elements (30, 40) and are configured to simultaneously unfold / fold over a further fin (22) of the paper packaging (10), which is arranged in a main extension plane (20) of the product chamber (16) of the paper packaging (10) on a side of the product chamber (16) opposite the fin (12).

24. Packaging machine device (56) according to claim 23, characterized in that the fin folding unit (14) has a spacer adjusting device (86) by means of which a distance (108) between the fin folding elements (30, 40) and the further fin folding elements (82, 84) can be adjusted.

25. Packaging machine (88), in particular a tubular bag packaging machine and / or flow pack packaging machine, with a sealing device (90) for producing at least one fin (12, 22) with a paper triangle and a transverse seam and with a packaging machine device (56) according to one of the preceding claims.

26. Packaging machine (88) according to claim 25, characterized by an outer packaging unit (92) which is configured to insert the paper packaging (10) with the unfolded / folded fins (12, 22), in particular following a fin folding process by means of the fin folding unit (14), into a secondary packaging (96) different from the paper packaging (10) and having at least one U-profile (94) such that the unfolded / folded fins (12, 22) are at least partially enclosed by each side wall (98, 100) of the U-profile (94).

27. Packaging method for a paper packaging (10), in particular a paper flow pack packaging and / or a paper tubular bag packaging, which in a closed state has at least one fin (12, 22), preferably with at least two opposing fins (12, 22), in particular by means of a packaging machine device (56) according to one of claims 1 to 24 and / or by means of a packaging machine (88) according to claim 25 or 26, characterized in that at least one outwardly projecting fin (12, 22) of the paper packaging (10) after closing a product chamber (16) of the paper packaging (10), in particular previously filled with a product (104), e.g. a foodstuff, is unfolded / folded in the direction of the product chamber (16) by means of a fin folding unit (14), independently of an interaction with a secondary packaging (96) different from the paper packaging (10).

Images