EP0295503B1 - Dispenser bin with a movable front portion - Google Patents

Abstract

The dispenser box has four peripheral walls (4, 6, 8, 10), a bottom and a lid, it being possible for a removal flap (24) with two lateral boundary tabs (28, 30) of the opening to be swivelled out of the front peripheral wall (4). The boundary tabs (28, 30) of the opening are constructed integrally with a material strip (38) which is bonded to the inside of the removal flap (24). Said material strip is preferably made integrally with the bottom tab (72), which is attached to the front peripheral wall (4), of the bottom, which is constructed as a foldable bonded bottom, and is connected to said bottom tab via a tear-off edge (78). The material strip (38) is then folded, together with the bottom tab (72), in an automatic folding stage onto the inside of the blank and bonded in its position. When the dispenser box is set up from the flat-folded state into the box shape, the bottom tab (72) lifts up from the peripheral wall (4), thus tearing off the tear-off edge (78). <IMAGE>

Description

The invention relates to a folding box blank of the type mentioned in the preamble of claim 1.

With such folding box blanks formed from a one-piece blank, in a first type the four peripheral walls are connected by folding lines or adhesive tabs, so that the peripheral walls form a "standing" box tube after being unfolded from a flat shape intended for shipping, which may be by a Bottom wall and a ceiling wall can be closed; in a second type, a blank is formed in which the bottom wall and the ceiling wall and two opposite side walls, after being unfolded, constitute a "lying" box tube, the other two side walls of which are closed by tabs.

The US-A-3593908 already shows a folding box blank of the type mentioned in the preamble of claim 1. The folding box blank or blank is of the second type, ie it is designed so that the front and the rear peripheral wall as well as the bottom and the cover over folding edges parallel to the floor and connected to one another using an overlap adhesive arranged on one of these folding edges; the side circumferential walls and other reinforcing bottom and top flaps are folded into their correct position after the flat folding box has been unfolded and fastened by inserting it.

In the case of a folding box structure according to this document, it is an obvious possibility to connect the material strip to the bottom flap, which in turn is connected to the front peripheral wall by means of the overlap glue during the first folding and gluing process. Since the articulation connection of the bottom flap to the front peripheral wall (apart from the folding movement) remains unchanged in all folding states, the material strip can remain firmly connected to the bottom flap.

The dimensional stability of the known folding boxes of the second type, especially against upsetting pressures from above (where “above” is defined by the position of the opening of the removal flap), is considerably less than the dimensional stability of folding boxes of the first type, in which the peripheral walls are connected to one another in an articulated manner by longitudinal edges are. They are therefore generally less stackable, which is a major disadvantage for storage and transportation.

Another disadvantage of the folding boxes of the second type is seen in the fact that after the folding, the two still open side walls generally have to be closed by the user by inserting wall flaps, which generally has to be carried out manually, since this process can hardly be automated.

Folding box blanks of the first type, on the other hand, generally have satisfactory crush resistance. In the folding boxes of this type, which are often preferred for this reason, with circumferential walls connected by longitudinal edges, however, it is no longer readily possible to remove the material strip during the first folding and gluing process, in which the box tube is formed, to be placed on the inside of the removal flap and glued to it, since none of the bottom flaps is connected to the front circumferential wall by gluing in this operation. The bottom flaps are generally only folded from their initial position into their operating position when the box is unfolded, i.e. the material strip could only be placed on the inside of the removal flap and glued to it when the box was unfolded and when the bottom was formed, for example with an automatic one Filling mode is not acceptable.

It is the object of the present invention to create a folding box blank of the type mentioned in the preamble of claim 1, which has better compression stability than the known folding box blank, the material strip nevertheless being produced during the first folding and gluing process in which the box hose is formed, can be glued to the removal flap, so that this process does not have to be carried out by the user when unfolding the blank.

The desired compression stability results in the manner already described in that a folding box blank of the first type is selected. At the same time, as a second measure, the floor is designed as a so-called folding adhesive floor; during the first folding and gluing process, the base flaps are folded onto the peripheral walls in a special manner, which is described in more detail using an exemplary embodiment, and glued to one another. This gives the opportunity to strip the material with one of the bottom tabs that are on the front peripheral wall is folded to connect and glue to the removal flap during this folding process. However, since the bottom flaps of a folding adhesive base are lifted off the respective circumferential walls when the box is unfolded and pivoted into a floor plane at right angles to it, the third measure is to form the connecting line between the material strip and the assigned bottom flap as a tear edge, which makes it possible when the bottom is formed, the material strips remain on the removal flap.

The formation of the bottom as a folding adhesive base not only enables the connection of the material strip to a base flap in a box blank of the first type, but also has the advantage that this base does not have to be formed manually by inserting base flaps, so that this technical solution for the User is easier and faster to use.

Similar to the known solution, the removal flap is punched out directly from the front circumferential wall, so that the removal flap and the removal opening are produced in one operation with one tool. In addition, the removal flap lies within the outline of the front circumferential wall, so that no separate annex which enlarges the utility format has to be provided. The pouring flap is completed by gluing on the material strip with the opening limiting tabs attached to it, for example, via folded edges. It is located by itself in the intended position of use after the strip of material has been stuck on, so that in this respect a very extensive degree of production is achieved and the completion work still to be carried out by the user is low.

When folding the box blank into the flat-lying folding box blank in the manner described further above, at least one of the two opening-limiting flaps with a lateral circumferential wall is folded together 180 ° flat onto the front circumferential wall. When the box is unfolded, this opening limitation flap must be raised by 90 ° together with the lateral peripheral wall against which it lies. In order to prevent this opening limitation tab from remaining in an only partially erected position and projecting into the interior of the unfolded box, it is provided in one embodiment of the invention that the end of this opening limitation tab, which is located inside when the removal flap is closed, is secured against lifting off from this peripheral wall by a securing device is; this fuse is designed so that it can release itself when the opening flap is opened for the first time. This securing means that the opening limiting flap is carried along by the associated peripheral wall when the folding box is unfolded.

It is further provided that the secured opening limiting tab is held by engagement between the associated adjacent peripheral wall and an overlap adhesive tab of the rear peripheral wall glued to it. The gluing area between the overlap adhesive flap and the peripheral wall can be interrupted in the area of the engagement of the opening limiting flap, so that it is only held in a form-fitting manner. When the removal flap is opened, the inner end of the Pull out the opening limiting tab under the overlap adhesive tab, which releases the fuse.

In the practical implementation of the box blank according to the invention, the strip of material is produced in a continuous manner with the bottom flap of the front peripheral wall and can be torn off automatically by this when the jacket is first unfolded. The strip of material is brought into its desired position and glued together with the bottom flap of the front peripheral wall, which has to be folded anyway for the purpose of forming a folding adhesive base. It remains connected to this bottom flap as long as the folding box blank maintains its flat folded state. The tear edge is designed so that when the folding box is unfolded, i.e. when the bottom flap is pivoted from its position parallel to the front circumferential wall into the bottom plane, the strip of material is separated from this bottom flap.

Fig. 1

in perspektivischer Darstellung eine Faltschachtel in aufgefaltetem Zustand mit geöffneter Entnahmeklappe;

Fig. 2

einen Schachtelzuschnitt zur Herstellung einer Faltschachtel gemäß Fig. 1 mit Blick auf die Wandinnenseiten;

Fig. 3

den Schachtelzuschnitt gemäß Fig. 2 nach Beleimung der zu verklebenden Teile und nach einem ersten Faltvorgang;

Fig. 4

eine Faltschachtel gemäß Fig. 1 während des Auffaltens in einer Ansicht von schräg unten;

Fig. 5

eine Ansicht in die oben offene Faltschachtel gemäß Fig. 1 in Richtung des Pfeiles IV, wobei die einzelnen Umfangswände mit den anhängenden Bodenlaschen auseinandergezogen sind.

An embodiment of the invention is shown in the drawing and described in more detail below. Show it:

Fig. 1

a perspective view of a folding box in the unfolded state with the removal flap open;

Fig. 2

a box blank for producing a folding box according to Figure 1 with a view of the inside of the wall.

Fig. 3

the box blank according to FIG. 2 after gluing the to be glued Parts and after a first folding;

Fig. 4

a folding box of Figure 1 while unfolding in a view obliquely from below.

Fig. 5

a view in the open top box of FIG. 1 in the direction of arrow IV, wherein the individual peripheral walls are pulled apart with the attached bottom flaps.

The folding box 2 shown in FIG. 1 has a casing which is formed from the front peripheral wall 4, the lateral peripheral wall 6, the rear peripheral wall 8 and the further lateral peripheral wall 10. A bottom 12 closes the lower end face, a cover 14 the upper end face of the folding box 2. The bottom 12 can be designed in a known manner as a plug-in base or as a folding adhesive base; cover 14 is generally a plug-in cover with inner cover flaps 16 and an outer cover flap 18 provided with a plug-in flap 20.

In the front peripheral wall 4, a removal opening 22 is formed, which can be closed by a removal flap 24 of the same shape and dimension. The removal flap 24 can be pivoted about a folding edge 26 near the floor between the open position shown and a position lying in the plane of the front peripheral wall 4.

Opening limiting tabs 28, 30 are arranged on the side edges of the removal flap 24 and slide against the inside of the respectively assigned lateral peripheral walls 6 and 10. The opening limitation tabs 28, 30 together with the removal flap 24 form a pouring flap 32 and form the side walls thereof.

At the inner ends of the opening limiting tabs 28, 30 stop lugs 34, 36 are formed which, in the open position of the pouring flap 32 shown in FIG. 1, bear against the front peripheral wall 4 on the inside and thus limit the opening path of the pouring flap 32.

The opening limitation tabs 28, 30 are formed in one piece with a material strip 38 glued to the inside of the removal flap 24 and connected to the latter via folded edges 80, 82 which allow the opening limitation tabs 28, 30 to be folded over 90 ° from the plane of the material strip 38.

The material strip 38 with the attached opening limiting tabs 28, 30 can, for example, be produced as a separate part and glued to the blank blank lying flat. 2 to 5, however, a folding box and a method for producing the same are described, which enable the material strip 38 and the attached opening limiting tabs 28, 30 to be produced in one piece with the folding box blank and processed further in a particularly simple manner.

The folding box blank or use 44 shown in FIG. 2 is used to produce a folding box according to FIG. 1. All parts corresponding in the two figures are therefore provided with the same reference numerals. The lateral circumferential wall 6, the front circumferential wall 4, the lateral circumferential wall 10 and the rear circumferential wall 8 are articulated via common longitudinal edges 46, 48, 50 designed as folded edges. The inner cover flaps 16 are connected to the lateral peripheral walls 6 and 10 via folded edges 52. The outer cover flap 18 is connected to the front circumferential wall 4 via a folded edge 54 and in turn carries the plug-in flap 20 via a folded edge 56.

On the free side edge of the rear peripheral wall 8, an overlap adhesive flap 60 is articulated via a folding edge 58.

Bottom flaps 70, 72, 74 and 76 are arranged on the lower edges of the lateral peripheral wall 6, the front peripheral wall 4, the lateral peripheral wall 10 and the rear peripheral wall 8 via the articulated folding edges 62, 64, 66 and 68, respectively. The bottom flaps 70, 72, 74, 76 are designed in such a way that they can form a folding adhesive base, as will be described in more detail below.

The bottom flap 72 is connected via a tear-off edge 78 to the material strip 38, on which the opening-limiting flaps 28 and 30 hang over the articulated folding edges 80 and 82, respectively.

FIG. 3 shows the blank 44 according to FIG. 2 after it has passed through a gluing station and a first folding station. The areas to be glued together are shown hatched, whereby it can remain open which area of each area pair receives the glue application and how the glue application looks like, for example, punctiform, stripe-like or the like. The dashed hatching means that the lower side of this surface with respect to the drawing plane is glued to the counter surface; the continuous hatching means that the upper side of the corresponding surface with respect to the drawing plane represents an adhesive surface. In Fig. 3 it can be seen that the underside of the overlap adhesive flap 60 and the left edge region 61 of the lateral peripheral wall 6 form a pair of adhesive surfaces. Further pairs of adhesive surfaces each form parts of the bottom flaps 70 and 72 or 74 and 76, as will be described in more detail below. As can be seen in particular in FIG. 2, the bottom flap 70 consists of a main part and a flap 70a attached to it via a folded edge 71. The bottom tabs 76 consist of a main part and a tab 76a attached to it via a folded edge 77.

As can be seen from Fig. 3, the bottom flaps 70, 72, 74 and 76 are folded in one operation around the respective folding edges 62, 64, 66 and 68 and placed flat on the peripheral walls 6, 4, 10 and 8 respectively. At the same time, the flap 70a connected to the bottom flap 70 is folded back around the folded edge 71, so that the side of the flap 70a lying above in FIG. 2 also lies above in the arrangement according to FIG. 3. In the same way, the tab 76a connected to the bottom tab 76 is folded back around the folded edge 77, so that the constellation of the bottom tabs 70 and 76 with the attached tabs 70a and 76a is shown in FIG. 3.

The material strip 38 is folded over together with the bottom flap 72 so that it lies on the inside of the removal flap 24. The opening limitation tabs 28 and 30 lie on the associated lateral peripheral walls 6 and 10, respectively. The folded edges 80 and 82 are flush with the folded edges 46 and 48. Before folding the bottom flaps 70, 72, 74, 76, for example, the side of the material strip 38 lying on top in FIG. 2 has been glued. 3 lies on the inside of the removal flap 24, it is glued to it (it goes without saying that the area of the removal flap 24 which is congruent with the material strip 38 can also be glued).

Before further folding of the blank 44 taking the state according to FIG. 3, at least one of the two assigned hatched areas of the tab 70a or the bottom tab 72 on the one hand and the tab 76a or the bottom tab 74 on the other hand is glued. In a next process step, the rear peripheral wall 8 is folded around the folded edge 50 so that it lies on the lateral peripheral wall 10 and on part of the front peripheral wall 4. Then the lateral peripheral wall 6 is folded around the folded edge 46 so that it also lies on the front peripheral wall 4, the adhesive region 61 being placed on the overlap adhesive flap 60 and being glued to it. At the same time, the mutually assigned hatched areas of the tab 70a and the bottom tab 72 on the one hand and of the tab 76a and the bottom tab 74 on the other hand are glued together. The state of the blank 44 thus achieved corresponds to the flat folded, ready-to-ship folding box.

3, when opening the lateral peripheral wall 6, the opening limiting tab 28 is also taken along and placed flat on the material strip 38. Since the end of the opening limitation tab 28, which is designed as a stop lug 34, projects into the adhesive area 61, it is clamped between this adhesive area 61 and the overlap adhesive tab 60. So that the stop lug 34 is not glued to the peripheral wall 6 or the overlap adhesive tab 60, the gluing is in the Area in which the stop nose is pinched is interrupted, as shown in FIG. 3.

FIG. 4 shows a folding box according to FIG. 1 during the unfolding from its flat folded state into the box shape. If, for example, the folding box 2 is loaded by a folding device in the direction of the arrows P1 and P2, the lateral peripheral walls 6 and 10 straighten up from their flat lying position, so that the folding box 2 has the desired box shape over a state with an approximately diamond-shaped outline with a rectangular floor plan. The bottom tabs 70 and 72, glued to one another, and the bottom tabs 74 and 76, on the other hand, extend into the floor plane and thereby form a closed, partially multi-layer overlapping bottom, the tab 76a engaging under that part of the bottom tab 72, the main part of the bottom Bottom flap 76, on the other hand, lies over that part of the bottom flap 72 which is close to it, with additional locking of the folding adhesive base taking place additionally on the bottom flap 72, on the one hand, and on the bottom flap 76, on the other, engaging latching projections 84 and 86 when unfolded.

As can be seen in particular in FIG. 4, when the folding box 2 is unfolded, the base flap 72 is lifted off the front circumferential wall 4 on which it previously rested. Since the material strip 38 is glued to the front peripheral wall, the tear-off edge 78 tears off, so that the unfolding of the bottom flap 72 is not hindered.

Since the opening-limiting flap 28 is clamped between the adhesive region 61 of the peripheral wall 6 and the overlap adhesive flap 60 in the manner described with reference to FIG. 3, it is secured against lifting off from the peripheral wall 6 and is consequently when the folding box 2 is unfolded into that perpendicular to the material strip 38 standing position taken. This measure is necessary because the tendency to fold the opening limiting flap by 180 ° straightening itself up, may get lost. When the removal flap 24 is opened for the first time, the pinched end 34 is automatically released from the fuse described, so that the opening of the removal flap is not hindered.

Fig. 5 shows a view into the open top of the folding box according to the arrow IV in Fig. 1. For a better overview, the peripheral walls 4, 6, 8 and 10 are shown separately from each other, so that the bottom flaps overlapping several times in the unfolded state 72, 70, 76 and 74 are fully visible. 3, dashed hatching means that the lower side with respect to the plane of the drawing represents an adhesive surface, while the continuous hatching indicates that the upper side with respect to the plane of the drawing is an adhesive surface. Accordingly, the hatched area of the bottom flap 74 lies on the tab 76a of the bottom flap 76 and overlaps with this in the congruent hatched areas. The hatched area of the bottom flap 72 lies on the hatched area of the flap 70a and overlaps with this in the respective hatched areas. As has already been explained with reference to FIG. 4, when the box is unfolded, the tab 76a and the bottom flap 74 glued to it grip under the left part of the bottom flap 72, while the right part of the bottom flap 76 extends over the right part of the bottom bracket 72 and the bottom bracket 70, 70a glued to it engages. The projections 84, 86 clamp together. The overlap adhesive flap 60, the material strip 38 and the two opening-limiting flaps 28, 30 can also be seen in FIG. 5.

It should also be mentioned that the material strip 38 not only serves to hold the opening limitation tabs 28 and 30, but at the same time forms an advantageous reinforcement of the removal flap 24.

Claims (3)

1. Pre-gummed folding box blank, formed from a one-piece blank, having four peripheral walls (4, 6, 8, 10), a top and a bottom, one front peripheral wall (4) comprising a removal flap (24) stamped out of this front peripheral wall (4) and able to tilt about a folding edge (26) parallel with the bottom, stuck to the inside of which flap is a material strip (38), whereof the end parts respectively adjoining one lateral peripheral wall (6, 10), form opening-limiting flaps (28, 30) and the material strip (38) being hinged by way of a weakening line (78) on a bottom flap (72) connected by way of a folding edge (64) to a peripheral wall (4), characterised in that

a)   the peripheral walls (6, 4, 10, 8), forming a box tube, are hinged one on the other by way of folding lines (46, 48, 50, 58) and are connected to each other by way of an adhesive flap (60),

b)   the bottom consists of a folding adhesive bottom with bottom flaps (70, 72, 74, 76) hinged on the lower edges (62, 64, 66, 68) of the peripheral walls (6, 4, 10, 8) and stuck to each other,

c)   the weakening line between the material strip (38) and the bottom flap (72) hinged on the front wall (4) is constructed as a tear-off edge (78).

2. Folding box blank according to Claim 1, characterised in that one end (34) of an opening-limiting flap (28) is anchored on the adjoining, lateral peripheral wall (6) for joint movement at the time of subsequent opening.

3. Folding box formed by erection from a folding box blank according to Claim 1, in which the box tube is folded up, the bottom is elongated and the tear-off edge is torn.

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