EP0341549A1 - Packaging container and procedure for filling and using the same - Google Patents

Abstract

An article (10) to be added for metering the flowable product can be integrated into a packaging container designed to hold a flowable product in the manner of a bag-in-box container, provided that the rigid wrapping (1, 13, 41, 52, 90 ) of the container enclosed volume is made larger by the volume of the object (10) than the volume of the flexible sack (9, 76) containing the product, and if the wrapping (1, 13, 41, 52, 90) is a reclosable window flap (7, 63, 105) for inserting and removing the object (10).

Description

The invention relates to a packaging container for receiving a flowable product, which consists of a rigid wrapper and a flexible sack stored therein with a closable outlet bung and a passage or bunghole of the wrapper associated therewith. It also relates to methods for starting up and filling the packaging container.

An essential feature of packaging of this type, as described in DE-OS 34 10 717, is the sack or bag for holding liquid, which is arranged within a stable packaging container, cardboard box or the like, for example consisting of corrugated cardboard, and one Has outlet bung. The outlet bung is generally welded into the sack, which is preferably made of plastic. Such bag-in-box containers are used as an alternative to bottles or canisters, particularly for use as storage packs, for liquid chemicals for use by commercial users, but also for beverages, such as wine, for use in the household. In practice, relatively large amounts of liquid, for example up to 30 liters, are suitable.

To remove the liquid content, the flexible sack integrated in the packaging container has a closable spout. This is carried out during the first commissioning an, for example pre-punched, opening of a surface, preferably the top, of the container is pulled outwards. In the pouring position, the outlet bung can be held or locked in the bunghole assigned to it in the top of the packaging. This pulling out and fixing the outlet bung is very tedious with a (small) bunghole that is just suitable for locking. If, on the other hand, the bung hole is made larger and thereby the pulling out of the outlet bung from the packaging is simplified, the pouring becomes more difficult because the outlet bung has to be held separately during the pouring.

Another problem arises when, for environmental reasons, separate disposal of the folding box and the emptied plastic bag is desired. If the outlet bung is carefully locked in the wall of the packaging container for convenient handling during pouring, the separation of the plastic components from the cardboard parts of the packaging causes correspondingly great problems.

In order to enable the consumer to dose the product appropriately, similar to when the liquid is provided in bottles or canisters, the aim is to include dosing containers or small application containers for daily use. In the case of delivery of the liquid in bottles or canisters, the objects to be added are for example placed on the outlet neck of the bottle or canister or attached to the container. With such a fastening, there is always a risk of losing the added item on the sales channel, especially in the shop. In addition, objects attached to the outside interfere with the stacking of the Packaging. This applies particularly to bag-in-box containers, because these packages can be equipped with an ideal cuboid shape for stacking.

The invention has for its object to integrate the dosing, application or the like of the flowable product, the object to be added to the packaging container removably into a reclosable bag-in-box container in such a way that special fastening elements on the outer surface of the packaging are eliminated Item cannot be accidentally lost on the sales channel, automated addition of the item is possible, and items of various shapes can be provided without affecting the stackability of the packaging and removed without impairing the functionality of the container.

The solution according to the invention for the packaging container of the type mentioned above with a rigid covering and a flexible sack stored therein is that an object to be handled for handling the product can be inserted at a predetermined position in the space between the covering and the sack, and that the wall of the covering has a reclosable window flap for removing and putting back the object to be added.

It is achieved by the invention that the object to be added is to be arranged closed within the rigid envelope. As a result, the item to be added cannot be lost on the distribution channels. Furthermore, it does not disturb the outer shape of the casing in any way, so that its Stackability is not affected. For use, the object to be released, for example a dosing container, can be removed by opening the window flap. Due to the resealability of the window flap, this can be done without affecting the functionality of the structure. Any disruptive fastening elements on the outer surface of the container for fastening the object to be added are not provided. Overall, the invention provides an environmentally friendly alternative to the plastic bottles or canisters previously used in households when washing, rinsing, cleaning or finishing agents are filled into these containers.

In particular, to enable automated addition of the object to be added, the solution according to the invention for a method for filling the packaging container is that the object after filling the sack and inserting the sack into the rigid envelope, but before closing the rigid envelope, into the outer surface of the sack is pressed in, and that the wrapper is then closed. This enables the automated addition of the dosing, application or the like serving object in a simple manner.

In an embodiment, the invention provides that the window flap, which is to be designed in particular as a reclosable tamper-evident closure, adjoins the intended position of the object to be added. By opening the window flap, the object can then easily be removed or - particularly in the case of reclosability - replaced in the casing. Here, especially in the case of carrying packs, a favorable mutual assignment is obtained when the window flap is in the upper end face, in particular in the same area as the bung hole, is arranged, as provided by the invention in a further embodiment. This simplifies handling and, if arranged on the top of the container, the object can be pushed in without the packaging having to tip over or be held.

According to a further invention, the volume enclosed by the rigid covering is only greater by the volume of the object to be added than the volume of the filled sack including the outlet bung. In practice, this means only a slight change in the dimensions of the wrapping compared to the case of such packaging without the dosing or handling object used. Regardless of the shape of the object, namely, the volume of the envelope is only increased by the displacement volume of the added object regardless of its length, width or height dimensions.

If the weight of the volume of liquid displaced by the object to be added is greater than the weight of the object - as is probably the rule - the object is automatically pushed out of the filled package after opening the window flap so that it can be easily removed . In any case, this easier handling will last as long as the interior of the container is essentially completely filled with liquid.

In an embodiment of the invention, the packaging container has two superimposed outer top flaps one above the other, one lower outer top flap being a hole Removal opening for the object to be added and the other, upper outer top flap which has the window flap corresponding to the tapping opening, preferably reclosable, and furthermore has two short inner head flaps with punched-out sections or incisions adapted to the contours of the window flap and the opening. Through the use of fully covering head flaps on the end face of the packaging containing the window flap and possibly also the outlet bung, sufficient stability of the packaging during storage, transport, stacking etc. is ensured, even when the window flap defined by an originality lock enables the object to be removed easily, guaranteed. If additional closure flaps are to be provided on the end face of the packaging wrapper, these flaps must also have a passage insofar as they come to coincide with the hole, the window flap or the tamper-evident closure.

The packaging container according to the invention is preferably formed at the opening for removing the object to be added in such a way that the window flap is connected to the adjoining surface of the head flap via a hinge groove, which may have been cut in a central region, and an edge formed over a folding groove on its edge opposite the hinge groove Has tab. This simplifies both reclosability and reopening. The plug-in position of the plug-in flap can essentially be secured against accidental opening if the plug-in flap formed from an outer head flap is drawn in from both sides at the level of its folding groove and if the plug-in tab in the head flap located under the window flap is assigned a plug-in slot which locks the plug-in tab at approximately 90 ° inwards. If the plug-in flap is pulled in from both sides at the level of its folding groove, that is to say has a kind of waist, corresponding projections remain in the head flap, under which the projections of the plug-in flap which laterally adjoin the waist snap into place when inserted.

In order to facilitate the opening of a plug-in flap designed in this way, the invention further provides that the plug-in flap has, at its free end opposite the creasing, a recessed or pre-cut, in particular punched, grip recess, preferably as a semicircular grip hole, during manufacture.

Furthermore, pulling out the inserted plug-in tab is made easier if it has an incision bent convexly in the direction of the free tab end in the course of its folding, as is also provided by the invention. When bending through 90 ° and inserting, there is then a projection on the window flap, which may be provided, which can be gripped with a fingertip without further ado for lifting and tearing out the flap.

To stabilize the closed window flap, it is expedient, according to an embodiment of the invention, that the window flap has a larger area than the corresponding removal opening of the head flap underneath and, in the closed state, rests in partial areas on the remaining parts of the lower head flap.

In a further development, the invention provides that the outlet bung in the area between its pouring opening and the adjacent sack has a neck with two molded, radially projecting flanges, that the mutual spacing of the flanges is approximately equal to the wall thickness of the casing in the area of the bunghole, that the The outer circumference of the neck is adapted to the passage defined by the bunghole and that the bunghole is adjacent with a quarter of its circumference to a window of the casing which is sufficiently large to reach through.

The window adjacent to the bunghole and the adapted shape of the outlet bung and the bunghole ensure that the outlet bung in the original packaging inside the wrapper is pulled outwards with the fingers of one hand after opening the bunghole and opening the window from the inside of the packaging and can be pushed laterally into the bunghole opened towards the window in such a way that the flanges provided on the neck of the outlet bung abut the wrapping surface above and below the edge of the bunghole. This enables simplified commissioning of the packaging. At the same time, the solution according to the invention also allows a simplified separation of the folding box and sack - after emptying - because it is sufficient to push the outlet bung out of its seat in the bunghole to the side and, together with the attached, preferably welded-on, sack from the, mostly made of corrugated cardboard, Pull out the wrapping.

According to a further invention, the window has a reclosable window flap with a hinge designed as a creasing line on the side facing away from the bunghole. A Such a window flap makes it possible - if necessary after breaking a tamper-evident closure - to reach into the casing, pull out the outlet bung and insert it into the finally opened bunghole and then close the window again so that the bungout is secured in the position of the bunghole at the same time.

A particularly good securing of the position of the run-on bung in the bunghole is achieved according to an embodiment of the invention if the window flap on its outer edge adjacent to the bunghole is adapted to the circumference of the side of the outlet bung to be pushed in and locked in the area between the two flanges.

A further securing of position, in particular also securing against rotation, is achieved according to the invention if the neck of the outlet bung in the area between the flanges is designed as a flattened piece of pipe for the purpose of securing against rotation. The flat sides of the pipe section are then preferably arranged as guide surfaces between two correspondingly flat sides of the bunghole leading to the window. The outlet bung cannot then turn about its axis, so that a pouring opening provided on the outlet bung always maintains a certain predetermined position with respect to the packaging.

For the oriented and positioned insertion of the outlet bung, it is also expedient if a flange of the outlet bung lying on the outside of the casing is designed so that it is clearly visible in a rosette shape and adapted to an orientation pattern attached to the casing. The user can then already When inserting it for the first time, recognize how the outlet bung should be oriented correctly.

If the opening according to the invention consisting of a bunghole and window is to be formed on a top surface of the packaging on which a plurality of top flaps lie one on top of the other, the borders of the bunghole and window are congruently formed continuously through all the top flaps of a wrapping wall lying one above the other. This not only ensures that the elements essential to the invention function properly, but also that the casing wall and window flap are stable for operation.

For shipping and storage in the sales area, it is advantageous if the packaging container according to the invention has a cuboid shape which is advantageous for stacking and is tamper-evident. To do this, it is sufficient if the surfaces of the casing enclosed by the window and bunghole are defined with the aid of cut or punched lines interrupted by tamper-evident bridges. The tamper-evident closure then consists of the tamper-evident bridges or punching bridges, which are easy to break open when the bunghole and window are opened. The first-time opening is made even easier if the section of the cutting or punching line provided at the border between the window flap and the bunghole is designed continuously - that is to say without punching bridges - as is further provided by the invention. Such a continuous cut makes it easier, above all, to press in the envelope surface originally filling the bunghole. In addition, there is no need for a continuous cut in the specified area on this edge the window flap later when locking or unlocking the window flap between the flanges of the sheet neck may be annoying remnants of punch bridges.

According to the invention, the window adjacent to the bung hole is also provided in a double function for the packaging of an application aid, for example a dosing vessel. In this way, it is possible to integrate into the bag-in-box container an object to be added to the packaging container, which is used for metering, application or the like of the flowable product, in such a way that special fastening elements on the outer surface of the packaging are omitted, the object to be added the distribution channel cannot be accidentally lost, an automated addition of the item is possible and items of various shapes can be made available for the application without affecting the stackability of the packaging, as already mentioned above.

When the packaging container is originally filled, the application aid is preferably pressed into the outer surface of the filled sack after the sack has been filled, but before the (rigid) wrapper is closed, and is locked in this position by closing the wrapper. Care should be taken to ensure that the application aid lies within the container adjacent to the window, so that it must be taken immediately after opening the tamper-evident package until use by the consumer. After removing the application aid, the outlet bung can be pulled out of the window and locked in the bunghole.

The volume enclosed by the rigid wrapping in the packaging according to the invention is only greater by the volume of the object to be added than the volume of the filled sack including the outlet bung. In practice, this means an extremely small change in the dimensions of the wrapping compared to the case of such packaging without the application aid used. Regardless of the form of the application aid, the volume of the envelope is increased only by the displacement volume of the added object, regardless of its length, width or height dimensions.

Experiments have shown that packaging containers with a window flap arranged in the upper outer flap are often pressed in. This can happen due to loads during transport or when repackaging the packaging container on store shelves. This is probably due in particular to the fact that the perforation line or punched-out area surrounding the window flap and the bunghole must be made so weak that the user can easily tear open the flap. During transport, however, the metering aid that may be included and the outlet bung can press against the window flap from the inside and already open it. To remedy this, the invention provides a further embodiment of a packaging container, which is characterized in that it has a fully covering, under outer head flap with window flap and bunghole delimited therein by perforation lines or punched holes, that it has two short, inner head flaps has punched-outs or incisions that match the contours of the window flap and bunghole, and that it has has a fully covering, upper outer head flap that completely covers the contours of the window flap and bunghole.

In order to be able to expose the window flap for use in this embodiment of the packaging container, it is expedient, according to a further invention, that the upper outer head flap has two perforation lines running parallel to its longitudinal and articulation edge, which are arranged outside the contours of the window flap and the bunghole are.

In an embodiment, the invention further provides that the outer regions remaining between the perforation lines and the longitudinal or articulated edge are designed as an adhesive surface for connecting the two outer head flaps.

Finally, it is expedient for tearing open the upper outer head flap that on a narrow side edge of the central part delimited by the perforation lines, a crease line running parallel to the narrow side edge is formed to form a grip strip, as is further provided by the invention.

Finally, to start up the packaging container, the invention provides a method which is characterized in that, while breaking the tamper-evident bridge, the indentation surface filling the bunghole is pressed in and the window flap filling the window is opened outwards, so that the outlet bung is pulled out of the packaging interior and used the flanges provided on his neck is pushed into the bunghole and locked by closing the window flap.

• Fig. 1 eine perspektivische Ansicht einer Faltschachtel mit offen stehenden Kopflaschen;
• Fig. 2 einen Längsschnitt der Faltschachtel nach Fig. 1 mit darin eingesetztem, gefülltem Kunststoffsack;
• Fig. 3 einen Schnitt nach Fig. 2 mit geschlossenen Kopflaschen der Faltschachtel;
• Fig. 4 einen Schnitt durch eine gefüllte Faltschachtel mit geöffnetem Entnahme-Fenster;
• Fig. 5 eine perspektivische Ansicht einer Faltschachtel nach Fig. 3 mit geöffnetem Entnahme-Fenster;
• Fig. 6 einen Zuschnitt einer Faltschachtel mit abgeändertem Entnahme-Fenster.
• Fig. 7 einen Zuschnitt eines Verpackungsbehälters mit in den Kopflaschen vorgesehenen Ausstanzungen von Spundloch und angrenzendem Fenster;
• Fig. 8 einen Zuschnitt wie in Fig. 7, jedoch mit alternativ angeordneten Ausstanzungen der Kopflaschen;
• Fig. 9 im Detail eine Ausführung von Spundloch und Fenster in einer Kopflasche gemäß Fig. 7;
• Fig. 10 Schnitte längs der Linie IX-IX von Fig. 11;
• Fig. 11 eine Draufsicht auf einen Auslaufspund;
• Fig. 12 die Anordnung eines Auslaufspundes mit Ausgießöffnung in betriebsbereiter Stellung in einem Spundloch inner­halb der miteinander verklebten, im Schnitt gezeich­neten Kopfklappen;
• Fig. 13 eine Ansicht quer zur Ansicht von Fig. 12 des Auslauf­spundes mit dem angrenzenden, im Schnitt gezeichneten Kopfbereich der Verpackung;
• Fig. 14 einen Zuschnitt eines alternativen Ausführungsbeispie­les;
• Fig. 15 einen aufgerichteten Verpackungsbehälter aus dem Zuschnitt nach Fig. 14 und in
• Fig. 16 den Verpackungsbehälter nach Fig. 15 mit aufgerissener oberer äußerer Kopflasche.

Details of the invention are explained on the basis of the schematic representation of exemplary embodiments. Show it:

• Figure 1 is a perspective view of a folding box with open top flaps.
• FIG. 2 shows a longitudinal section of the folding box according to FIG. 1 with the filled plastic bag inserted therein;
• 3 shows a section according to FIG. 2 with closed top flaps of the folding box;
• 4 shows a section through a filled folding box with the removal window open;
• 5 shows a perspective view of a folding box according to FIG. 3 with the removal window open;
• Fig. 6 shows a blank of a folding box with a modified removal window.
• 7 shows a blank of a packaging container with punched holes in the head flaps of the bung hole and the adjacent window;
• 8 shows a blank as in FIG. 7, but with alternatively arranged punched-out portions of the head flaps;
• 9 shows in detail an embodiment of the bunghole and window in a head flap according to FIG. 7;
• Fig. 10 sections along the line IX-IX of Fig. 11;
• 11 is a plan view of an outlet bung;
• 12 shows the arrangement of an outlet bung with a pouring opening in a ready-to-use position in a bung hole within the head flaps which are glued to one another and shown in section;
• FIG. 13 is a view transversely to the view of FIG. 12 of the outlet bung with the adjoining head region of the packaging shown in section;
• 14 shows a blank of an alternative exemplary embodiment;
• 15 shows an erected packaging container from the blank according to FIG. 14 and in
• 16 shows the packaging container according to FIG. 15 with the upper outer head flap torn open.

Fig. 1 shows a folding box generally designated 1, for example made of corrugated cardboard, with open, short inner head flaps 2 and fully covering outer head flaps 3. The head flap 3 provided with a removal opening 6 forms the lower outer head flap in the closed state of the folding box and the one with a Window flap 7 provided head flap 3 forms the upper outer head flap. I.e. the latter forms the outer surface when the folding box 1 is closed. The length and width of the outer head flaps 3 are identical to the dimensions of the open cross section 4 of the folding box 1. The short head flap 2 and the two fully covering head flaps 3 have round bung holes 5 which can be punched out or pre-punched and in the closed position of all Head flaps 2 and 3 are congruently one above the other. Likewise, the other short head flap 2 has an incision or a punched-out 6a, which comes to lie congruently with the removal opening 6 and window flap 7 in the closed position of the head flaps 2, 3. The removal opening 6 is expediently punched out over the entire area, while the window flap 7 is only to be pre-punched in a perforated manner and is to remain connected in a hinge-like manner to the fully covering head flap 3 via a hinge groove 8 on one side.

2 shows a phase in the assembly of a bag-in-box container with a folding box 1 and a flexible sack 9 stored therein and with an object 10 to be added. When assembling according to the exemplary embodiment, the folding box 1, which is already closed on its underside (bottom), is filled with the filled sack 9 from above; the bag 9 can also be inserted empty into the folding box 1 and then filled via a closable bung 11. The volume of the filled sack 9 is smaller than the volume enclosed by the folding box 1 by the volume of the object 10. The bag 9 does not completely fill the inner volume of the folding box 1 according to FIG. 2.

Fig. 3 shows the state in which the article 10 is pressed into the flexible bag 9 such that the sum of the volumes of the filled bag 9 and article 10 substantially completely fills the inner volume of the folding box 1. After closing the end face 12 of the folding box 1 according to FIG. 3, the interior space available in the folding box 1 is almost completely filled by displacing the flexible bag 9.

4 shows, in a section of a folding box according to FIG. 3, how, after opening the pre-punched window flap 7, the object 10 is lifted by the new product distribution, which is physically caused in the sack 9, and can be conveniently removed from the removal opening 6 corresponding to the window flap 7, if the weight of the object 10 is less than the weight of the volume of the bag 9 displaced by the object 10 in the state according to FIG. 3. If, on the other hand, the weight of the object 10 is greater than the weight of the volume of the bag contents displaced by it according to FIG. 3, the remains Item 10 in a position within the box, as shown in Figure 5 as an example. The window flap 7 can be designed as a tamper-evident closure without any significant effort.

6 shows in principle a flat blank of a folding box with a removal opening that is modified compared to the exemplary embodiments according to FIGS. 1 to 5. The same or corresponding parts of the folding box are designated in the same way as in FIGS. 1 to 5. In addition to the short head flaps 2 and fully covering head flaps 3, narrow and wide wall surfaces 14 and 15 and associated short bottom flaps 16 and fully covering bottom flaps 17 are also shown in the blank 13 according to FIG. 6. A carrying handle 18 can be integrated into one of the narrow wall surfaces 14 when erecting and gluing, to which a pass-through hole 19 may be assigned in the other narrow wall surface 14.

The special feature of the blank 13 according to FIG. 6 compared to the exemplary embodiments according to FIGS. 1 to 5 lies above all in the design of the window flap, which is denoted overall by 7, with a removal opening underneath, denoted overall by 6, in the erected folded box state. As before, the window flap 7 is connected to the adjoining surface of the head flap 3 via a hinge groove 8. Handling is facilitated, however, since the hinge groove 8 has a punched-through central area 20, so that only the remaining edge parts form the hinge connection between the window flap 7 and the head flap 3. A preferred feature of the embodiment according to FIG. 6 is that the edge of the window flap 7 opposite the hinge groove 8 is connected via a fold groove 21 Has tab 22. This plug-in flap 22 is deflected inward by 90 ° for reclosing and pressed into the inside of the box.

A further preferred feature of the exemplary embodiment according to FIG. 6 is that the plug-in flap 22, which is formed from an external head flap 3, is drawn in from both sides at the level of its folding groove 21, that is to say has waist-like indents 23, in the material of the head flap 3 which remains Corresponding projections 24 correspond. In this construction, if the plug-in flap 22 is folded inwards by 90 °, its lateral protrusions 25, which are worked out by the recesses 23, engage under the protrusions 24, so that a window flap 7 which is pressed in in this way will not open by itself.

The stability is further increased if the plug-in flap 22 is assigned a plug-in slot 26 which locks the plug-in flap 22 and is bent about 90 ° inward in the lower outer head flap 3, which is inside when the folding box is erected and folded up. If the short head flap 2 protrudes from the blank 13 under the removal opening 6 when the folding box is erected, corresponding recesses 6a must be provided in the short head flap 2, as shown in FIG. 6. The same applies - as in FIGS. 1 to 5 - for the relationship of the bunghole 5 in the fully covering head flaps 3 and in one short head flap 2.

A further stabilization of the reclosing position of the window flap 7 is achieved when the flap 7 is larger Has area as the corresponding removal opening 6 of the head flap 3 to be located underneath and in the closed folding box state rests at least in partial areas 27 and 28 on remaining parts of the head flap 3 located underneath. This relationship is symbolized in FIG. 6 by a dashed line 29 on the circumference of the removal opening 6. In this way, the top flap 7 cannot be pushed deeper than desired into the erected folding box, because it rests on its four corner regions 27, 28 on the surface of the top flap 3 underneath, although a removal opening 6 is provided there per se.

The window flap in the exemplary embodiment according to FIG. 6 is not only securely reclosable, but can also be opened easily after reclosing. For this purpose, it is provided that the plug-in tab has, at its free end 30 opposite the folding groove 21, a recessed or pre-cut, in particular punched, grip recess 31 during manufacture, preferably as a semicircular grip hole. In this recessed grip 31, the user grips, for example, when the window flap 7 is opened for the first time. However, the recessed grip 31 does not provide any particular advantages for opening a reclosed window flap 7, since the tip of the plug-in tab 22 on which the recessed grip 21 lies lies inside the erected folding box 1 protrudes. To facilitate the opening of a reclosed plug flap 22 is therefore provided in the course of its folding groove 21 a convex towards the free end 30 incision 32, which causes a tab-like projection when folding the plug-in tab 22 into the interior of the box 33 is exposed, on which the window flap 7 is gripped and can be raised against the locking of the bulges 25 (under the projections 24).

7 shows a blank, generally designated 41, of a cuboid folding box with two short, inner top flaps 42 and 43, a lower, fully covering outer top flap 44 and an upper, fully covering top flap 45. The blank 41 also includes narrow and wide wall surfaces 46 or 47 and associated short bottom flaps 48 and fully covering bottom flaps 49. A carrying handle 50 can be integrated into one narrow inner wall surface 46 when erecting and gluing, to which a pass-through hole 51 is assigned in the other outer narrow wall surface 46 of the blank 41 .

In principle, just like the blank 41 according to FIG. 7, the blank 52 according to FIG. 8 is prepared. The blank 52 has the same but alternatively arranged punchings in the short top flaps 42 and 43 and in the fully covering top flaps 44 and 45. As an alternative, it is also shown that the blank 52 according to FIG. 8 is only a narrow adhesive flap 53 and has four identical bottom flaps 54 on the bottom. Instead of the handle 50 according to FIG. 7, there are engagement holes 55 in FIG. 8.

The fully covering top flaps 44 and 45 shown in FIGS. 7 and 8 have punching lines 56 and in each case a creasing line 57, which are in principle identical or can be, but are offset in FIG. 7 by 90 ° in relation to FIG. 8. The short head flaps 42 and 43 accordingly have different punch lines 58, 59, 60 and 61, as shown in FIGS. 7 and 8.

The latter punching lines and the cutouts obtained thereby are arranged so that they come to lie congruently with the removal opening 6 and the congruent window flap 63 when the folding box is erected and the head flaps are folded up.

FIG. 9 shows an upper outer, fully covering head flap 45 according to FIG. 7 as an example. This head flap has a window 62 adjoining one another with a window flap 63 arranged therein in the original state and a bunghole 64 with an indentation surface 65 arranged therein in the original state. A center point 66 is defined for the bunghole 64 or the indentation surface 65.

According to FIG. 9, the head flap 45 according to FIG. 9 has punching lines 56 running parallel to one another, a creasing line 57 and punching lines 67 and 68 running circularly around the center point 66, the radius of curvature of the punching line 67 being greater than the radius of curvature of the punching line 68 The punching lines 56 and 68 are preferably interrupted by so-called punching bridges 69, while the punching line 67 is advantageously not to be interrupted. However, all punch lines can also be designed as perforation lines.

In the case of a construction with punching and creasing lines and the associated punching bridges according to FIG. 9, there is an outer head flap 45, which represents a tamper-evident opening which can be pressed in for a closure system lying inside the erected packaging and which comprises a tear-open bung 64 with adjacent window 62 , the latter being hinged and using the crease line 57 is resealable. For the proper function of the window 62 in particular, all of the further top flaps, possibly under the outer top flap 45, provided with incisions or punched-outs, should be congruent to one another in the upright state of the packaging. The same naturally applies analogously to the blank 52 according to FIG. 8, with the punching and creasing lines of the outer head flap 45 being pivoted through 90 °. When the folding box is erected, the head flaps are viewed from the inside outwards in the order of short inner head flaps 42 , 43, the lower outer head flap 44 and finally the upper outer head flap 45 lying thereon. The incisions and / or punched-outs lie congruently one above the other. In the area outside the removal opening, the tab areas lying one on top of the other are glued, as is usual with folding boxes.

An exemplary embodiment of an outlet bung 70 is shown on the basis of FIGS. 10 and 11, which is designed in its lower area adjacent to the flexible sack such that the user can easily assemble it when the packaging is ready for operation in accordance with the above folding boxes. For the understanding of FIGS. 10 and 11, it is pointed out that FIG. 10 shows a section along the line IX-IX of FIG. 11. The outlet bung 70 according to FIG. 10 should be able to be fixed securely in the top flaps of the erected folding box according to FIGS. 1 to 9, and problem-free removal of the empty inner bag or sack for the purpose of separate disposal should be ensured.

For this purpose, the bung 70 is equipped with a stable, relatively large, clearly visible flange 71, which is rotationally symmetrical, but is preferably partially designed as a rosette 72 (FIG. 11). Above the flange 71, the outlet bung 70 is, as usual, rotationally symmetrical, while an intermediate piece or neck 73 below the flange 71 is to be designed as a flattened piece of pipe with two parallel guide surfaces 74 (dashed lines in FIG. 11). The neck 73 borders with its lower edge on a welding flange 75 to which the sack (76 in FIGS. 12 and 13) is to be welded.

FIGS. 12 and 13 show the head region of a cuboid folding box made, for example, from a blank according to FIG. 7 with short or fully covering head flaps 43, 44 and 45 glued to one another. FIG. 12 shows the outlet bung 70 with an attached tap 77 partly in section seen from a wide wall surface 47 (FIG. 7), so that the pouring opening 78 of the tap 77 is in the direction of a narrow wall surface 46. In the view according to FIG. 13, the outlet bung 70 with the tap 77 attached is shown with the adjacent parts of the packaging shown in section, viewed from the direction of a narrow wall surface 46.

For the illustration in FIGS. 12 and 13, a ready-to-use closure system with a discharge bung and head flaps glued to one another according to FIGS. 7 and 9 are required. The inside areas of the punching hole 64 delimiting the punch lines 56, 58, 59, 67 and 68 of the top flaps 43 to 45 according to FIGS. 7 and 9 enclose the neck 73 of the outlet bung 70 from three sides, thereby simultaneously orienting the pouring opening 78 on the tap 77 into the desired direction and secure the outlet bung 70 and thus the tap 77 against rotation about their (Symmetry) axis 79. Slipping out of the guide surfaces of the outlet bung 70 from the punched-out portions of the top flaps is prevented by the reclosing of the window flap 63 (closing direction 80). In the exemplary embodiment, the removal window 63 consists of parts of the top flap 45. The free end of the removal window 63 snaps with its outer edge 81 formed by the stamped line 67 under the flange 71 at the outlet bung 70 and thereby snaps between the flange 71 and the welding flange 75. To lift the window flap 73 out of this locked position in the opening direction 82, a certain force has to be overcome so that a secure positioning of the outlet bung 70 must be ensured.

In the original state, both the window 62 and the bunghole 64 are closed, since by means of the tamper-evident or punching bridges 69 of the outer head flap 45 (FIG. 9) a connection of the window flap 63 and the bunghole pressing-in surface 65 is provided in the surrounding surface of the head flap 45 is.

When the packaging container is started up, the user first presses in the press-in surface 65 filling the bunghole 64 and then pulls the window flap 63 outwards. The punch bridges 69, which represent the tamper-evident feature, are broken. If necessary, after removal of an application aid accommodated in the packaging below the window flap 63, the outlet bung 70, which is also in the original state, is raised and - as described above - fixed by pushing it into the bunghole 64 and closing the window flap 63. With this handling, a rosette 72 on the circumference of the flange 71 can have an informative meaning for the user when on drawings corresponding to the folding box surface are provided, which make clear the orientation of the pouring opening 78 provided by the manufacturer.

After the packaging container has been emptied completely, the window flap 63 can be opened again in order to remove plastic parts present within the envelope, when the outlet bung 70 is pulled out laterally from the three-sided cardboard enclosure in the bunghole 64, for separate disposal of paper and plastic with a handle through the window 62.

14 to 16, a blank or a packaging container is shown in a further alternative embodiment. The blank generally designated 90 in FIG. 14 has two surfaces 91 and 92 forming the broad sides of the erected packaging container with bottom flaps 93 and 94 hinged thereon, and areas 95 and 96 forming bottom sides of the packaging container with bottom flaps 97 and 98 hinged thereto. When the folding box blank 90 is erected, the base flaps 93, 94, 97 and 98 are brought into a superimposed position in the usual manner and glued to one another. Another adhesive tab 99 is articulated laterally to the surface 91. Furthermore, the narrow side surface 95 also has a handle flap 102 which is delimited by a perforation line 100 and has creasing lines 101. When the folding box blank is erected, it is pressed inwards and thus exposes a handle opening. The top flaps of the folding box blank 90 consist of two short top flaps 103 and 104, which are inside when the folding box blank is erected and folded, and which are hinged to the folding box blank surfaces 96 and 95. These have, like the other exemplary embodiments, the incisions 107 and 108 adapted to the contours of the window flap 105 and the bunghole 106. When the folding box cut is erected, these inner head flaps 103 and 104 have the lower, fully covering outer head flap 110 provided with the window flap 105 and the bunghole or flap 109 covering the bunghole. The uppermost layer and thus the outer surface of the packaging container in the head area is formed by another fully covering, the upper outer head flap 111. This has parallel to its articulation edge 112 on the folding box area 92 and parallel to its longitudinal edge 113 two perforation lines 114. The middle part 115 of the head flap 111 is delimited by these two perforation lines 114. The perforation lines 114 are spaced apart from one another to such an extent that they come to lie outside the contours of the window flap 105 and the bunghole flap 109 when the packaging container is folded and erected. The central part 115 is formed over the entire surface and, due to the arrangement of the perforation lines 114 explained above, completely covers the window flap 105 and the bunghole flap 109. The areas remaining between the outer edge 113 and the nearest perforation line 114 and between the articulation line 112 and the nearest perforation line 114 serve as an adhesive surface for gluing the head flap 111 and the head flap 110 underneath. Furthermore, the head flaps 103 and 104 can also be glued to the head flap 110 lying above. Parallel to a narrow side edge, the head flap 111 has a creasing line 116 running parallel to this narrow side edge at a short distance from this narrow side edge. With the help of this creasing line, a grip strip 117 is divided into the central part 115, on which the central part is easily grasped and to expose the window flap 105 and Bunghole flap 109 can be torn off along the perforation lines 114. In order to further facilitate tearing off or tearing open the middle part, a notch-shaped incision is provided in the top flap 111 at the beginning and end of the perforation lines 114.

FIG. 15 shows a packaging container from the blank according to FIG. 14 in the closed position. 16 shows the packaging container with the central part 115 torn off and the window flap 105 and bunghole flap 109 exposed. The bunghole flap 109, which is now exposed, is then removed and the window flap 105 is folded up along the crease or perforation line 118. Through the now exposed removal opening, for example, a metering aid enclosed is removed or only the outlet bung of the filled sack is gripped and inserted into the bunghole 106. The window flap 105 is then closed again. A packaging container ready for dispensing is then available. With this embodiment, a packaging container is thus created in which the window flap and the bunghole are particularly protected. The outer head flap 111 is thus designed as a protective flap.

Claims (25)

1. Packaging container for holding a flowable product, which consists of a rigid covering (1, 13, 41, 52, 90) and a flexible sack (9, 76) stored therein with a closable outlet bung (11, 70) and a passage or Bung hole (5, 64, 106) of the casing (1, 13, 41, 52, 90),
characterized,
that an object (10) to be added for handling the product can be inserted at a predetermined position in the space between the wrapping (1, 13, 41, 52, 90) and the bag (9, 76), and that the wall of the wrapping (1, 13, 41, 52, 90) has a reclosable window flap (7, 63, 105) for removing or returning the object (10) to be added. 2. Packaging container according to claim 1,
characterized,
that the window flap (7, 63, 105), which is to be designed in particular as a reclosable tamper-evident closure, is adjacent to the predetermined position of the object to be added. 3. Packaging container according to one of the preceding claims,
characterized,
that the volume enclosed by the rigid envelope (1, 13, 41, 52, 90) is only around the volume of the object (10) to be added is greater than the volume of the filled sack (9, 76) including the outlet bung (11, 70). 4. Packaging container according to one of the preceding claims,
characterized,
that the window flap (7, 63) is arranged in the upper end face (12), in particular in the same container area as the bung hole (5, 64). 5. Packaging container according to one of the preceding claims,
characterized,
that he has two superimposed, fully covering outer head flaps (3, 44, 45) and the one, lower outer head flap (3, 44) has a hole (6) for the object to be added (10) and the other, upper outer head flap which corresponds to the removal opening (6), preferably reclosable, window flap (7, 63) and that it has two short inner head flaps (2, 42, 43) adapted to the contours of the window flap (7, 63) and removal opening (6) Has punched or cut. 6. Packaging container according to one of the preceding claims,
characterized,
that the window flap (7) has a cut - optionally in a central region (20) - Hinge grooving (8) is connected to the adjoining surface of the head flap (3) and has on its edge opposite the hinge grooving (8) an insertion flap (22) molded over a folding grooving (21). 7. Packaging container according to claim 6,
characterized,
that the plug-in flap (22) formed out of an external head flap (3) is drawn in (23) from both sides at the level of the folding groove (21), and that the plug-in flap is located in the head flap (7) lying on the inside under the window flap (7) 3) a plug-in slot (26) which locks the plug-in tab (22) inward and is bent approximately 90 ° is assigned. 8. Packaging container according to claim 6 or 7,
characterized,
that the plug-in tab (22) has at its free end (30) opposite the creasing (21) a recessed or pre-cut, in particular stamped, recessed grip (31), preferably as a semicircular grip hole. 9. Packaging container according to one of the preceding claims,
characterized,
that in the course of the folding groove (21) of the plug-in flap (22) a convex cut (32) is provided in the direction of the free flap end (30). 10. Packaging container according to one of the preceding claims,
characterized,
that the window flap (7) has a larger area than the corresponding removal opening (6) of the head flap (3) underneath and in the closed state rests in parts (27, 28) on remaining parts of the lower head flap (3). 11. Packaging container according to one of claims 1 to 5,
characterized,
that the outlet bung (70) has a neck (73) with two integrally formed, radially projecting flanges (71, 75) in the area between its pouring opening (78) and the adjacent sack (76), that the mutual spacing of the flanges (71, 75 ) is approximately equal to the wall thickness of the casing in the area of the bunghole (64), that the outer circumference of the neck (73) is adapted to the passage defined by the bunghole (64) and that the bunghole (64) with about a quarter of its circumference a sufficiently large window (62) for reaching through adjoins the casing. 12. Packaging container according to claim 11,
characterized,
that the window (62) has a reclosable window flap (63) with a hinge designed as a creasing line (57) on the side facing away from the bunghole (64). 13. Packaging container according to claim 12,
characterized,
that the window flap (63) at its outer edge (81) adjoining the bunghole (64) is adapted to the circumference of the side of the outlet bung (70) facing the window (62) and in the area between the two flanges (71, 75) lock is. 14. Packaging container according to one of claims 11 to 13,
characterized,
that the neck (73) of the outlet bung (70) in the area between the flanges (71, 75) is designed as a flattened piece of pipe for the purpose of preventing rotation. 15. Packaging container according to one of claims 11 to 14,
characterized,
that a flange (71) of the outlet bung (70) lying on the outside of the casing is clearly visible in a rosette shape (72) adapted to an orientation pattern attached to the casing. 16. Packaging container according to one of claims 11 to 15,
characterized,
that the border of the bunghole (64) and window (62) is congruent through all of them Head flaps (42, 43, 44, 45) of a cladding wall is continuous. 17. Packaging container according to one of claims 11 to 16,
characterized,
that the surfaces (63, 65) of the casing enclosed by window (62) and bunghole (64) are defined with the aid of cut or punched lines (56, 68) interrupted by tamper evident bridges (69). 18. Packaging container according to claim 17
characterized,
that the section of the cutting or punching line (67) provided at the boundary between the window flap (63) and the bunghole insertion surface (65) is continuous. 19. Packaging container according to one of claims 11 to 18,
characterized,
that the window (62) at the same time to include an application aid, for. B. a metering vessel is provided. 20. Packaging container according to one of claims 1 to 3,
characterized,
that it has a fully covering, lower outer head flap (110) with a window flap (105) and bunghole flap (109) delimited therein by perforation lines or punched holes, that it has two short, inner head flaps (103, 104) with punchings or incisions (107, 108) which match the contours of the window flap (105) and the bunghole flap (109) and that it has a fully covering, upper outer head flap (111) which has the contours completely covered by window flap (105) and bunghole flap (109). 21. Packaging container according to claim 20,
characterized,
that the upper outer head flap (111) has two perforation lines (114) which run continuously parallel to its longitudinal (113) and its articulation edge (112) and are arranged outside the contours of the window flap (105) and bunghole flap (109). 22. Packaging container according to claim 20 or 21,
characterized,
that the outer areas remaining between the perforation lines (114) and the longitudinal (113) or articulated edge (112) are designed as an adhesive surface for connecting the two outer head flaps (110, 111). 23. The device according to one of claims 20 to 22,
characterized,
that on a narrow side edge of the central part (115) delimited by the perforation lines (114) there is a creasing line (116) running parallel to the narrow side edge to form a grip strip (117). 24. Procedure for starting up the packaging container according to one of claims 11 to 23,
characterized,
that while breaking the tamper-evident bridge (69), the pressing-in surface (65, 109) filling the bunghole (64, 106) is pressed in and the window flap (63, 105) filling out the window (62) is opened outwards so that the outlet bung (70) extends out pulled out of the packaging and pushed into the bung hole (64, 106) using the flanges (71, 75) provided on its neck (73) and locked by closing the window flap (63, 105). 25. A method for filling the packaging container according to one of the preceding claims,
characterized,
that the object (10) after filling the sack (9, 76) and inserting the sack (7, 76) into the rigid envelope (1, 13, 41, 52, 90), but before closing the rigid envelope (1 , 13, 41, 52, 90) is pressed into the outer surface of the sack (9, 76), and that the covering (1, 13, 41, 52, 90) is then closed.

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