EP0341550A1 - Folding carton for a bag-in-box package - Google Patents

Abstract

A window flap formed in the outer carton of a bag-in-box packaging for the removal of a dispenser can be easily reclosed if the plug-in flap (22) formed from an external top flap (3) is level on both sides at the level of the folding grooves (21) pulled in (23), and the plug-in tab in the head flap (3) located under the window flap (7) is assigned a plug-in slot (26) which locks the plug-in tab (22) inward and is bent about 90 °.

Description

The invention relates to a folding box blank for a bag-in-box packaging for receiving a flowable product, which consists of a rigid wrapping and a flexible sack stored therein with a closable outlet bung and this associated passage or bunghole as well as a window flap with an associated removal opening in of the covering, the window flap being connected to a head flap via a hinge grooving and having an insert flap formed over a folding grooving on its edge opposite the hinge grooving.

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, which consists, for example, 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 environmentally friendly alternative to plastic bottles or canisters, especially for use as a storage pack, e.g. B. for washing, rinsing, cleaning or finishing agents for use in households or businesses, but also for beverages such as wine. Come in practice relatively large amounts of liquid, for example up to 30 liters, in question.

To remove the liquid content, the flexible sack integrated in the packaging container has a closable outlet bung. When it is started up for the first time, it is pulled outwards through a, for example pre-punched, opening of a surface, preferably the top, of the container. 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 this makes it easier to pull the outlet bung out of the packaging, pouring out becomes more difficult because the outlet bung must be held separately during casting.

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 case of delivery of the liquid in bottles or canisters For example, the items to be added are placed on the outlet nozzle 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 on 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 improve a box blank so that a dispenser added to the packaging can be easily removed and reinserted into the packaging, in particular the packaging can be easily reclosed, the dispenser can be removed and reinserted without the handling of the ready-made packaging is impaired.

In a folding box blank of the type mentioned, this object is achieved in accordance with the invention in that the plug-in tab formed from an external top tab is drawn in from both sides at the level of the folding creases, and in that the tab in the inside of the top tab located under the window flap is a Insert tab is assigned about 90 ° inwardly locking locking slot.

The packaging container according to the invention is formed at the opening for removing the object to be added in such a way that the window flap has a hinge groove with a cut - possibly cut in a central area adjoining surface of the head flap is connected and has on its edge opposite the hinge crease a molded flap formed over a crease. This simplifies both reclosability and reopening. The insertion position of the plug-in tab can be secured against accidental opening essentially when the plug-in tab formed from an external head tab is retracted from both sides at the level of its folding groove and when the plug-in tab in the head tab located under the window flap inserts the plug-in tab about 90 ° inward locking locking slot is assigned. 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 plug-in flap is equipped at its free end opposite the creasing with a recessed or pre-cut, in particular punched, grip recess, preferably as a semicircular grip hole. Pulling out the inserted plug-in flap is made even easier if it has a cut that is convex in the direction of the free flap end in the course of its folding. When bending through 90 ° and inserting, there is a projection of the window flap on the optionally provided recessed grip, which can easily be grasped with a fingertip to lift and tear out the 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.

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.

Fig. 1 shows an overall designated 1 folding box, for example made of corrugated cardboard, with open short, inner head flaps 2 and fully covering outer head flaps 3. 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. Die a 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 which should be congruently one above the other in the closed position of all head flaps 2 and 3.

A removal opening 6 and an outside window flap 7 (after the folding box has been erected) are also provided. The inside removal opening 6 is expediently punched out from the outset, while the window flap 7 is only punched out and has a hinge groove 8 on one side is to remain hinged to a fully covering head flap 3.

2 shows a phase in the assembly of a bag-in-box container with folding chutes 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. It is provided that 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 sack 9 such that the sum of the volumes of the filled sack 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 raised 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. Conversely, if the weight of the article 10 is greater than the weight of the sack contents displaced by it according to FIG. 3, the article 10 remains in a position within the box, as shown in FIG. 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 and fully covering bottom flaps 17 are also shown in the cut 13 according to FIG. 6. A carrying handle 18 can be integrated into one narrow inner wall surface 14 when erecting and gluing, to which a pass-through hole 19 is optionally 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 an underlying removal opening, denoted overall by 6. First, as before, the window flap 7 is connected to the adjacent surface of the head flap 3 via a hinge groove 8. Handling is facilitated if the hinge groove 8 has a punched-through central region 20, so that only the remaining edge parts form the hinge connection between the window flap 7 and the top flap 3. A preferred 6 feature is that the hinge groove 8 opposite edge of the window flap 7 has a folding groove 21 articulated to the window flap 7 plug-in 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 push-in flap 22 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 it has waist-like indentations 23 which in the material of the head flap 3 remain correspond to each other directed projections 24. 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 tab 22 in the head flap 3 located under the window flap 7 is assigned a plug-in slot 26 which locks the plug-in tab 22 at an angle of about 90 ° inwards. If the short head flap 2 protrudes from the blank 13 under the removal opening 6 when the folding box is erected, corresponding recesses 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 if the flap 7 has a larger area than the corresponding removal opening 6 of the head flap 3 underneath and in the closed state rests on at least four corner regions 27 and 28 on remaining parts of the head flap 3 below. This relationship is symbolized in FIG. 6 by a dashed line 29 on the circumference of the removal opening 6. As can be seen, the top flap 7 cannot be pressed deeper than desired into the erected folding box because it rests at its four corner regions 27, 28 on the surface of the bottom flap 3 below, 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).

Claims (3)

1.Folding box cut for a bag-in-box packaging to hold a flowable product, which consists of a rigid wrapper (13) and a flexible sack stored therein with a closable outlet bung and this associated passage or bunghole (5) and a window flap (7 ) with an assigned removal opening (6) in the casing (13), the window flap (7) being connected to a head flap (3) via a hinge groove (8) and a fold groove (8) on its edge opposite the hinge groove (8). 21) has integrally formed plug-in tab (22),
characterized by
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 (3) lying under the window flap (7) ) a plug-in slot (26) which locks the plug-in tab (22) inward and is bent approximately 90 °. 2. 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. 3. 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).

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