EP0413722A1

EP0413722A1 - Folding box for bag-in-box packaging

Info

Publication number: EP0413722A1
Application number: EP89905078A
Authority: EP
Inventors: Siegfried Konkel; Dieter Vom Hofe; Volker Endler
Original assignee: Henkel AG and Co KGaA
Current assignee: Henkel AG and Co KGaA
Priority date: 1988-05-09
Filing date: 1989-05-02
Publication date: 1991-02-27
Also published as: ES1010202U; EP0341550A1; US5074429A; DD285321A5; WO1989010879A1; DD285320A5; JPH03504224A; ES1010202Y

Abstract

Un clapet agencé sur le carton extérieur d'un emballage du type "bag-in-box" pour sortir un doseur se referme sans difficulté si l'on pousse vers l'intérieur (23) les deux côtés de la languette d'insertion (22) découpée dans la languette supérieure extérieure (3) au niveau de la rainure de pliage (21) et si la languette d'insertion est dotée dans la languette supérieure intérieure (3) en-dessous du clapet (7) d'une fente d'insertion (26) qui arrête ladite languette d'insertion (22) lorsqu'elle est pliée vers l'intérieur et forme un angle d'environ 90°.A flap arranged on the outer cardboard of a packaging of the "bag-in-box" type for taking out a dispenser closes without difficulty if the two sides of the insertion tab ( 22) cut in the upper outer tongue (3) at the level of the folding groove (21) and if the insertion tongue is provided in the upper inner tongue (3) below the flap (7) with a slot insertion tab (26) which stops said insertion tab (22) when bent inward and forms an angle of approximately 90°.

Description

'Folding box for a bag-in-box packaging'

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 a passage or passage associated therewith. There is a bunghole and a window flap with an associated removal opening in the casing, the window flap being connected to a head flap via a hinge groove and having an insert flap formed over a fold groove on its edge opposite the hinge groove.

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 has an 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, particularly for use as a storage pack, e.g. B. for detergents, dishwashing agents, cleaning agents or finishing agents for use in households or businesses, but also for beverages, such as wine. Come in practice

REPLACEMENT LEAF relatively large amounts of liquid, for example up to 30 liters, in question.

In order 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 upper side, of the container. In the pouring position, the outlet bung can be held or. can be locked in the bunghole assigned to it in the top of the packaging. This pulling out and locking of the opening 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 has to be held separately during casting.

A further problem arises if, for environmental reasons, separate disposal of the folding box and emptied plastic bag is desired. If the spout is conveniently 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

REPLACEMENT LEAF the objects to be added are placed, for example, 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 attached to the outside interfere with the stacking of the packaging. This is particularly true for 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 cut so that a dispenser included in the packaging can be easily removed and reinserted into the packaging, in particular the packaging can be easily reclosed, the removal and reinsertion of the Doser can take place without affecting the handling of the packaging made ready for operation.

In the case of a folding box blank of the type described in the introduction, this object is achieved according to the invention in that the plug-in flap formed from an outer head flap is drawn in from both sides at the level of the folding, and - in that the flap is inserted in the head flap located under the window flap the plug-in tab is assigned to locking plug-in slot which is bent inward by approximately 90 °.

The packaging container according to the invention is designed at the opening for removing the object to be added in such a way that the window flap has a hinge groove with - possibly in a central area - the hinge groove - «-

adjacent surface of the head flap is connected and has on its edge opposite the hinge crease a molded over a folding groove flap. This simplifies both reclosability and reopening. The insertion position of the plug-in tab can be essentially secured against accidental opening if the plug-in tab formed from an external head tab is retracted from both sides at the level of its folding and if the plug-in tab is located in the inside of the head pocket under the window flap Insert tab is assigned about 90 ° inwardly locking locking slot. If the plug-in flap is drawn in from both sides at the level of its folding, that is to say has a kind of waist, corresponding projections remain in the top flap, under which the projections of the plug-in flap laterally adjoining the waist snap into place when inserted.

In order to also facilitate the opening of a plug-in flap designed in this way, the plug-in flap is equipped at its free end opposite the folding arrangement with a recessed grip which is cut or pre-cut, in particular punched, during manufacture, preferably as a semicircular grip hole. Pulling out the inserted plug-in tab is made even easier if it has a cut that is convex in the direction of the free tab end in the course of its folding. When bending through 90 ° and inserting, there is then a projection of the window flap on the optionally provided recessed grip, which can easily be grasped with a fingertip for lifting and tearing out the flap.

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

Fig. 1 is a perspective view of a folding box with open head flaps; Fig. 2 shows a longitudinal section of the folding box according to FIG. 1 with a filled plastic bag inserted therein; Fig. 3 shows a section according to FIG. 2 with the head closed, flap the carton; Fig. 4 shows a section through a filled folding box with the removal window open; Fig. 5 shows a perspective view of a folding box according to FIG

Fig. 3 with the removal window open; Fig. 6 a cut of a folding box with a modified one

Withdrawal window.

Fig. 1 shows a folding box designated overall by 1, 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 . The one 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, in the closed position of all head flaps 2 and 3, should lie congruently one above the other.

Provided are also a removal opening 6, and a (after erection of the folding box) outer window ^¬ flap 7. The inner extraction opening 6 is expediently punched out from the outset, while the window flap 7 may be only punched out and a one-sided Scharnierrillung 8 to remain hinged to a fully covering head flap 3.

In Fig. 2 becomes a phase in the assembly of a bag-in-box container with a folding box 1 and a flexible sack stored therein

9 and with 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 sealable bung 11. It is envisaged that the volume of the filled bag 9 is equal to the volume of the object

10 is smaller than the volume enclosed by the folding box 1. The sack 9 fills the inner volume of the folding box 1 according to FIG. 2 not quite out.

Fig. 3 shows the state in which the article 10 is pressed into the flexible sack 9 such that the sum of the voiumina of the filled sack 9 and article 10 essentially completely fills the interior 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.

Fig. 4 shows a section of a folding box according to FIG. 3, how, after opening the pre-punched window 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

REPLACEMENT LEAF of the state according to Fig. 3 is the volume of the contents of the bag 9 displaced by the object 10. If, on the other hand, the weight of the object 10 is greater than the weight of the object according to FIG. 3 displaced volume of the bag contents, the object 10 remains in a position within the box, as shown in Fig. 5 is shown as an example. The window flap 7 can be designed as a tamper-evident closure without significant effort.

In Fig. 6 is a flat blank of a folding box with a compared to the embodiments of FIG. 1 to 5 modified discharge opening shown in principle. The same or corresponding parts of the folding box are as in the Fig. Denoted 1 to 5. In addition to the short head flaps 2 and fully covering head flaps 3, the blank 13 according to FIG. 6 also shows narrow and wide wall surfaces 14 and 15 and associated short base plates and fully covering base plates 17. In one narrow wall surface 14, which is inner when erecting and gluing, a handle 1 8 can be integrated, to which a pass-through hole 19 is optionally assigned in the other narrow wall surface 14.

The peculiarity of the blank 13 according to FIG. 6 compared to the exemplary embodiments according to FIG. 1 to 5 lies above all in the design of the window flap, generally designated 7, with an underlying removal opening, generally designated 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 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

REPLACEMENT LEAF tes feature of the embodiment of FIG. 6 consists in the fact that the edge of the window flap 7 opposite the hinge groove 8 has a plug-in flap 22 articulated to the window flap 7 via a folding groove 21. This plug-in flap 22 is deflected inward by 90 ° for reclosing and pressed into the inside of the box.

Another preferred feature of the embodiment of FIG. 6 consists in the fact that the plug-in tab 22 formed from an external head tab 3 is drawn in from both sides at the level of its folding line 21, that is to say it has waist-like indentations 23, which in the material of the head tab 3 remain on top of one another correspond to 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 projections 24, so that a window flap 7 which is pressed in in this way will not open by itself.

The stability is further increased here if the plug-in tab 22 in the head flap 3 located under the window flap 7 is assigned an insertion 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 made in the short head flap 2, as shown in FIG. 6, can be provided. The same applies - just as with the Fig. 1 to 5 - for the relationship of the bung hole 5 in the fully covering head flaps 3 and in a short head flap 2.

REPLACEMENT LEAF 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 at least at four corner regions 27 and 28 on remaining parts of the head flap below 3 rests. In Fig. 6, this relationship is symbolized by a dashed line 29 on the circumference of the removal opening 6. As can be seen, the head flap 7 cannot be pressed deeper than desired into the erected folding box because it rests on its four corner regions 27, 28 on the surface of the head flap 3 underneath, although a removal opening 6 is provided there per se.

The window flap in the 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 guide 21, a recessed or pre-cut, in particular punched, grip recess 31, preferably as a semicircular grip hole. The user grips this recessed grip 31, 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 is in the inside of the erected folding box 1 protrudes. To facilitate the opening of a reclosed plug flap 22, a convex cut 32 is provided in the course of its folding 21 in the direction of the free end 30, by means of which a protrusion according to Art a tongue 33 is exposed on which the window flap 7 is gripped

REPLACEMENT LEAF and can be raised against the locking of the bulges 25 [under the projections 24).

REPLACEMENT LEAF

Claims

P a t e n t a n s r u c h e

Folding box cut for a bag-in-box packaging for receiving a flowable product, consisting of a rigid wrapper [13) and a flexible bag stored therein with a closable outlet bung and this associated passage or bunghole (5) and a window flap (7) with an associated removal opening (6) in the casing (13), the window flap (7) being connected to a head flap (3) via a hinge groove (8) and having an edge on its edge opposite the hinge groove (8) Has a plug-in flap (22) formed over a fold line (21), characterized in that the plug-in flap (22) formed out of an outer top flap (3) is drawn in (23) from both sides at the level of the fold line (21), and that the plug-in tab in the head flap (3) lying inside the window flap (3) has a plug-in tab (22) which is bent approximately 90 ° inwards and locks the insertion slot (26) z is ordered.

Packaging container according to claim 6 or 7, characterized in that the plug-in flap (22) has, at its free end (30) opposite the folding means (21), a recessed or pre-cut, in particular punched, grip recess (31), preferably as a semicircular grip hole, during manufacture . 3. Packaging container according to one of the preceding

Claims, d a d u r c h g e k e n z e i c h n e t that in the course of the folding (21) of the plug-in flap (22) a convex in the direction of the free flap end (30) curved incision (32) is provided.

REPLACEMENT LEAF