EP0249108B1 - Cardboard box having an integrated dosing device - Google Patents

Abstract

A folding box with an integrated dispenser and pouring opening for powder products and granulates to provide for uniform dispensing, even during the first dispensing process, and to be made in one piece on erection of the folding box from a flat box blank. The dispenser has a dispensing duct wall which extends over the entire width of the pouring side wall transversely of the pouring opening and which is cut below the height of the pouring opening and displaced parallel into the interior of the box to form a wall of the dispensing chamber. The wall of the dispensing chamber is fixed at the base of the dispensing chamber by means of a pressure tongue secured to the pouring side wall.

Description

The invention relates to a blank consisting of four side walls, each with a bottom flap hinged at the bottom and a top flap hinged at the top as well as a side adhesive flap for a folding box with a pouring opening provided at the upper end of a side wall and this integrated metering device for free-flowing powder products or upstream of the box Granules with an additional box surface attached to the side wall having the pouring opening, consisting of a metering shaft wall which extends across the entire width of the side wall and which is cut in the area adjacent to the pouring opening and at the interface for forming a metering chamber wall is offset parallel to the inside of the box , and which is to be connected to the side wall articulated to the side wall having the pouring opening, the metering chamber wall having a predetermined dosage height he is bent below the cut to form a dosing chamber on the side wall and is locked as a sloping towards the side wall dosing chamber floor between the side wall and a pressure tongue attached to it.

A folding box of the type referred to in the preamble of the claim is known from US-A-2,381,800. This folding box is made from a three-part blank. This requires considerable mechanical and / or manual effort in the manufacture of this folding box.

From US-A-2,750,082 a one-piece blank is known for a folding box with a pouring opening provided at the upper end of a chute side wall and this integrated dosing device for free-flowing powder products and granules upstream of the box interior with an additional box surface articulated to the chute side wall, consisting of an dosing shaft wall extending transversely to the pouring opening over the entire width of the filling side wall, which is cut and offset parallel to the inside of the box to form a measuring chamber wall and which is to be connected to the side wall of the box hinged to the filling side wall.

The additional, so-called fifth side of the box provided in the cutting of the known box is designed so that it is to be inserted and glued in during the gluing process and automatically sets up a metering device when the folding box is erected inside. The known metering device consists of a double wall across the width and height of the box, which is cut in the lower area of the box - opposite the pouring opening - and is spaced into the interior of the box. This creates a so-called pre-metering chamber on the bottom of the erected box. When tilting a box filled with powder by approx. 135 °, the powder in the box slides from the pre-metering chamber to the pouring opening, whereby the double wall and the shorter pre-metering chamber wall, which is offset into the interior of the box, prevent the powder from running on.

A folding box is described in US Pat. No. 2,393,262, the discharge opening of which inside the box is preceded by two additional walls extending across the width / height of the box. The additional wall closest to the discharge side wall has a notch in the bottom area, the other additional wall is notched in the head area, approximately at the level of the pouring opening.

The latter metering devices allow a relatively uniform metering, but they have the disadvantage that the space which the double wall delimits to the inside of the box is limited when it is transported overhead or when it is rotated overhead, e.g. after shopping on the way home, filled with product so that the first dosage can exceed the permissible or intended value by a multiple. Another disadvantage is that the known metering devices take up a disproportionately large space within the package, so that the usable package volume is reduced accordingly.

The invention has for its object to provide a spatially adapted to the dosage requirements, integrated dosing system of a folding box, which always emits the same dosing amounts when emptying the box and does not lead to overdosing even with overhead transport or excessive rotation of the package and the component of the blank for the folding box.

With a cut of the type described above, this object is achieved according to the invention in that the box surface and the pressure tongue are laterally formed components of the blank, the box surface being molded in the upper area of the blank and laterally delimited by creasing lines the metering shaft wall and then delimited by a cutting line below the metering chamber wall laterally offset with molded-on metering chamber bottom and the pressure tongue in the middle and / or the lower region of the blank is formed.

The invention provides a one-piece blank with which a folding box known from US-A-2,381,800 and specified in the preamble of claim 1 can be produced in one piece. The one-piece blank can be processed fully automatically into the folding box in conventional folder gluers.

The invention creates a folding box, the cutting of which has at least one so-called fifth side wall with the elements of an integrated dosing device. In the blank, the individual interlocking elements of the dosing device lie next to one another in a surface, so that the folding box according to the invention can be set up essentially in the same way as the box known from US-A-2,750,082. An important feature of the folding box according to the invention is that the metering chamber can be moved entirely into the upper corner of a folding box containing the pouring opening, without the need for additional handles or additional material to produce the bottom of the metering chamber compared to the prior art.

Another feature is that it is possible with the aid of the cut-on pressure tab to press the dosing chamber floor - sufficiently tight for the bulk material - against the bulkhead side wall and against the box wall articulated thereon.

Improvements and further refinements of the invention are specified in the subclaims.

Fig. 1

einen flachliegenden Zuschnitt zum Herstellen einer Faltschachtel mit integrierter Dosiervorrichtung;

Fig. 2

eine Ausschnittsvergrößerung von Fig. 1;

Fig. 3

eine Teilansicht des Zuschnitts nach Fig.1 mit um 180° umgelenkter fünfter Seitenwand;

Fig. 4

einen Schnitt senkrecht zur Schüttseitenwand einer aufgerichteten Faltschachtel nach Fig. 1 bis 3;

Fig. 5

ein von Fig. 1 abweichendes Ausführungsbeispiel eines flachliegenden Zuschnitts zum Herstellen einer F altschachtel mit integrierter Dosiervorrichtung; und

Fig. 6

eine Abwandlung des Zuschnitts nach Fig. 5.

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

Fig. 1

a flat blank for producing a folding box with an integrated dosing device;

Fig. 2

an enlarged detail of Fig. 1;

Fig. 3

a partial view of the blank of Figure 1 with the fifth side wall deflected by 180 °;

Fig. 4

a section perpendicular to the bulkhead of an erected folding box according to Fig. 1 to 3;

Fig. 5

an embodiment of a flat lying blank deviating from FIG. 1 for producing a folding box with an integrated dosing device; and

Fig. 6

a modification of the blank according to FIG. 5.

1 consists essentially of the side walls 1, 2, 3 and 4 as well as the so-called "fifth" side wall articulated on the side wall 4, generally designated 5. In the exemplary embodiment according to FIG. 5, in addition to the fifth side wall 5, a "sixth" side wall, designated overall by 6, is also provided. On the side walls 1 to 4 of Fig. 1 to 5 fully covering upper flaps 7 to 10 and lower flaps 11 to 14 are hinged. The side wall 4, the so-called pouring side wall, has a pouring opening 15. A longitudinal adhesive tab 16 is provided for tubing the blank according to FIG. 1. 5, the longitudinal adhesive tab is divided and is designated by the reference numerals 17 and 18, respectively.

In the present context, essential details of the blank according to FIG. 1 are explained in more detail with reference to FIGS. 2 to 4. The fifth side wall 5 is molded onto the longitudinal edge 19 of the bulkhead side wall 4 via the longitudinal adhesive tab 16. A metering chamber wall 20 is provided opposite the pouring opening 15, its wall parallel to the longitudinal edge 19 running edges are formed as creasing lines 21 and 22, while the inner edge running parallel to the package top edge or to the narrow side edge 23 of the bulkhead side wall 4 represents a cutting line 24. Beyond the section line 24, the dosing chamber wall 25 adjoins the dosing shaft wall 20.

The cutting line 24 is to be continued along the metering chamber wall 25 - until its end. An adhesive surface is connected laterally to the outside of the dosing shaft wall 20 and dosing chamber wall 25 via the creasing line 22 and a creasing line 26. The dosing chamber wall 25 has a creasing line 28 on the side opposite to the creasing line 26 and likewise a creasing line 29 on the side opposite the cutting line 24 Dust flaps 33 and 34 on. The edge of the metering chamber base 30 facing the longitudinal adhesive flap 16 is a cutting line 35. The dust flaps 33 and 34 are also completely cut out of the material. As can be seen, the metering shaft wall 20, the metering chamber wall 25 and the metering chamber floor 30 and the adhesive surface 27 are connected only via the creasing lines 21, 28 and via bridge material 36 to the longitudinal adhesive tab 16 and thus to the bulkhead side wall 4.

In the exemplary embodiment according to FIGS. 1 to 3, the cut parts of a pressing tongue are also molded onto the longitudinal adhesive tab 16 and thus directly onto the bulkhead side wall 4. 2 consists of two adhesive flaps 37 and 38 and a cardboard flap 39. For the function of the pressure tongue to be erected from parts 37 to 39, it is advantageous if the adjacent area 40 according to FIG. 2 between the longitudinal adhesive flap 16 and metering chamber bottom 30 is cut out.

To erect the blank according to FIGS. 1 and 2, first of all according to FIG. 3 the fifth side folded a total of 180 ° around the longitudinal edge 19 of the bulkhead wall 4 on this and the adjacent side wall 3. The adhesive surface 27 adheres to the side wall 3, while the adhesive surface 37 is connected to the pouring side wall 4. In a next step, the cardboard flap 39 with the adhesive flap 38 is deflected by 180 ° through a creasing line 41 provided between the adhesive flaps 37 and 38, so that the cardboard flap 39 functions loosely in its function as a pressure tongue when the adhesive flaps 37 and 38 are glued together provided as the metering chamber floor 30 blank surface.

To erect the folding box, the side walls 3 and 4 are tilted against one another by 90 ° in such a way that the metering shaft wall 20 and the metering chamber wall 25 are bent in their grooves 21, 22, 26 and 28 and lifted out of the plane of the flat blank. During this movement, the dosing chamber floor is pushed further in the direction of arrow 42 (FIG. 3) under the cardboard flap 39, which acts as a pressing tongue, such that the pressing tongue presses the dosing chamber floor 30 against the side wall 4 of the chute and by kinking the grooves 29 and 32 into the groove from FIG 4 brings obvious slope. In the erection process, the longitudinal adhesive tab 16 is also deflected by 90 ° with respect to the plane of the bulkhead side wall 4 and can be used for connection to the side wall 1 to be folded up.

In the erection process described, the integrated dosing chamber automatically erects itself. As can be seen from a comparison of FIGS. 1 to 3 and 4, the metering shaft wall 20 faces the erected folding box of the pouring opening 15 in the upper region of the box and prevents the product from flowing in during the respective metering process due to the delimitation from the inside of the box.

Since the dosing shaft wall 20, the dosing chamber wall 25 and the dosing chamber floor 30 have to fill the entire cross section of the erected folding box, the width of the elements 20, 25 and 30 designated by a must be equal to the width a of the bulkhead side wall 4. Due to the lateral offset x of the metering shaft wall 20 and metering chamber wall 25 in the cut according to FIG. 2, the dimension of the distance between the surfaces 20 and 25 in the erected box is predetermined (cf. FIG. 4). The length y according to FIG. 2 is a measure of the height of the metering chamber and thus, like x, a measure of the content of the metering chamber integrated in the upper box corner containing the pouring opening. In practice, it has proven to be advantageous to choose the length of the metering chamber base 30 measured in the direction of the longitudinal edge 19 such that the base 30 forms an angle w (FIG. 4) of 28 to 35 ° when erected with the bulkhead side wall 4.

The handling of the folding box erected from the blanks from FIGS. 1 to 3 is very simple. A swivel by more than 90 ° is sufficient, such that the side wall 4 with the pouring opening 15 reaches approximately the horizontal. During this tilting by more than 90 °, the contents of the metering chamber are emptied through the discharge opening 15. When swiveling back and straightening up the package, the dosing chamber is filled again by the product which, when tilted, reaches the corner region of the box adjacent to the discharge opening 15. Since the dosing chamber has only a limited volume, it cannot hold an excessive amount of product, even if it is tilted repeatedly or if the box is turned upside down.

A further exemplary embodiment of a flat-lying folding box blank is shown schematically in FIG. 5. The cut according to FIG. 5 differs from that according to FIGS. 1 to 3 primarily in that the individual components of the metering device are divided into a fifth (5) and a sixth (6) side wall. The one divided longitudinal adhesive tab 17 to the bulkhead side 4 articulated components of the fifth side wall 5 in the components 20, 25 and 30 and hanging tabs and fields essentially match the embodiment of FIGS. 1 to 3. Special features arise above all regarding the construction of the pressure tongue. 5, this is formed from two cardboard flaps 44 and 45 formed onto the longitudinal edge 43 of the side wall 1 via a longitudinal adhesive flap 18. In addition to the longitudinal adhesive edge 18, the cardboard flap 44 includes a longitudinal adhesive strip 46, while the cardboard flap 45 has a longitudinal adhesive strip 47. For the function of the pressure tongue to be formed from the cardboard flaps 44 and 45, a cutout 48 on the head of the flap 44 is also important.

When straightening, e.g. 5, the fifth side wall 5 is first folded over on the crease line 19 by 180 ° onto the side walls 3 and 4, the adhesive surface 27 being glued to the side wall 3. At the same time, the cardboard flap 45 of the sixth side wall is folded over its crease line 50 by 180 ° onto the cardboard flap 44, the adhesive surface 47 being glued to the pressure flap 44 in the region thereof on the back of the longitudinal adhesive edge 18. Next, the cardboard flaps 44 and 45 glued together are folded over the crease line or longitudinal edge 43 by 180 ° onto the side wall 1 such that the cardboard flap 45 loosely faces the side wall 1.

The longitudinal adhesive strips 17 and 18 result in a powder-tight longitudinal adhesive bond when the side wall 1 with the folded-over cardboard flaps 44, 45 and the side wall 2 are folded together by 180 ° onto the side wall 3 and 4 onto the fifth side wall 5. When the walls 1 and 2 are folded over with the cardboard flaps 44 and 45, the adhesive surface 46 is glued to the side wall 4. After the folding box has been glued lengthways, the dosing chamber floor 30 which is inclined with respect to the bulkhead side wall 4 according to FIG. 2 is brought into the bevel or locked by the pressure of the cardboard flap 45 which has been folded over and glued by a total of 360 °. The lower edge of the metering chamber base 30 and the dust flap 34 hinged to it automatically slide upright in the direction perpendicular to the longitudinal edge 19 of the bulkhead side wall 4, starting in the cutout 48 under the free edge 49 of the cardboard flap 45. As in the exemplary embodiment according to FIGS in this case, the dust flaps 33 and 34 are applied closely to the side walls 3 and 4, respectively.

A further modification of the folding box design according to FIG. 5 is illustrated in FIG. 6. Essentially the same components as in FIG. 5 are provided, but the outer cardboard flap 45 is missing. When erecting, the cardboard flap 44 is folded over the longitudinal edge 43 by 180 ° onto the side wall 1. Otherwise, the blank is erected in the same way as that of FIG. 5.

Reference symbol list

1 to 4

= Side walls

5

= fifth side wall

6

= sixth side wall

7 to 10

= upper flaps

11 to 14

= lower flaps

15

= Dump opening

16

= Longitudinal adhesive strips

17.18

= Longitudinal adhesive strips, divided

19th

= Longitudinal edge

20th

= Dosing shaft wall

21, 22

= Crease lines

23

= Side edge (4)

24th

= Cutting line

25th

= Dosing chamber wall

26

= Crease line

27th

= Adhesive surface

28, 29

= Crease line

30th

= Dosing chamber floor

31, 32

= Crease lines

33, 34

= Dust flaps

35

= Cutting line

36

= Bridge material

37, 38

= Adhesive surface

39

= Cardboard flap

40

= Detail

41

= Crease line

42

= Arrow

43

= Longitudinal edge (1)

44, 45

= Cardboard flaps

46, 47

= Longitudinal adhesive strips

48

= Detail

49

= free edge

50

= Crease line

a

= Width

x

= Offset

y

= Dosing chamber height

w

= Angle

Claims (6)

1. Blank consisting of four side walls (1, 2, 3, 4) each with a respective base tab (11, 12, 13, 14) articulated thereto at the bottom and with a respective lid tab (7, 8, 9, 10) articulated thereto at the top as well as with a lateral gluing tab (16; 17, 18) for a folding box with a pouring opening (15) provided at the upper end of one side wall (4) and an integrated metering device, which is connected upstream thereof in the interior of the box, for pourable powder products or granulates with an additional box surface (5), which is fastened to the side wall (4) displaying the pouring opening (15) and consists of a metering shaft wall (20), which extends transversely to the pouring opening (15) over the entire side wall width (a), is cut (24) in the region adjoining the pouring opening (15) as well as displaced parallelly (x) into the interior of the box for the formation of a metering chamber wall (25) and which is to be connected with the side wall (3) articulated to the side wall (4) displaying the pouring opening (15), wherein the metering chamber wall (25) is kinked against the side wall (4) for the formation of a metering chamber with a preset metering height below the cut (24) as well as arrested between the side wall (4) and a contact pressure tongue (39; 45) fastened thereat as a metering chamber base (30) sloping down obliquely (w) in direction towards the side wall (4), characterised thereby, that the box surface (5) and the contact pressure tongue (39; 45) are laterally shaped-on components of the blank, wherein the box surface (5) is shaped on in the upper region of the blank and the metering shaft wall (20), which is bounded laterally by score lines (21, 22) and by the cut line (24), displays the metering chamber wall (25), which is adjoining below and laterally displaced thereat, with shaped-on metering chamber base (30) and the contact pressure tongue (39; 45) is shaped on in the middle and/or lower region of the blank.
2. Blank according to claim 1, characterised thereby, that a dust tab (33; 34) is articulated to the metering chamber base (30) at the bottom and/or laterally.
3. Blank according to claim 1 or 2, characterised therby, that the contact pressure tongue (39) is formed in the same additional box surface (5) as the metering wall (20).
4. Blank according to claim 1 or 2, characterised thereby, that the contact pressure tongue (45) is formed of a sixth box surface (6) articulated to lie diametrally opposite the additional box surface (5) with respect to the sequence of the side walls (1 to 4).
5. Blank according to claim 3 or 4, characterised thereby, that the rim region, which is connected with the side wall (4), of the contact pressure tongue (39) is to be doubled by folding-over and that the rim region (37) to be folded over is to be glued on both surfaces to the respectively adjoining surface (4, 38).
6. Blank according to one or more of the claims 3 to 5, characterised thereby, that the contact pressure tongue (39; 45) is shaped on at least one part of the gluing tab (16; 18), which serves for turning the blank into a tube.

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