EP0507112A2 - Hinged-lid package, especially for cigarettes - Google Patents

Abstract

2.1. In hinged-lid packages comprising a package part (12) and a lid (13) hinged to the rear wall (15) of the package, the problem consists in the precise closed position of the lid (13). This applies, above all, to hinged-lid packages with rounded longitudinal edges (10, 11). …<??>To produce an additional closing force, outwardly directed deformations, namely convex curves (38) are formed in the free part in the region of side walls (28, 29) of a collar (26). These deformations rest against the insides of the lid side walls (17) with increased friction and thus with production of an increased closing force. …<??>2.2. The deformation of the collar side walls (28, 29) is achieved in that longitudinal edges (30, 31) of the collar are formed so as to diverge towards the free edge. Due to a material constriction, this results in the deformation of the collar side walls (28, 29). …<??>2.3. As a further or alternative closing aid, an upright or oblique incision (39) is introduced in the region of the collar side walls (28, 29). This incision produces a projecting holding edge due to the convex curve (38). Said holding edge likewise rests against the inside of the side walls (28, 29) of the package, producing an increased closing force. …<??>2.4. Furthermore, the package or the blank is designed in a particular manner, such that rounded contours fit together at the ends of the blank, engaging one another, and can be separated from a piece of material without waste. …<IMAGE>…

Description

The invention relates to a hinged box (hinge-lid pack) made of (thin) cardboard, with a box part and a lid pivotally connected to it, in particular for holding a cigarette group, with a collar with a collar front wall partially protruding therefrom in the box part and collar side walls is arranged, the area protruding from the box part in the closed position of the lid is enclosed by this.

Hinged boxes are a worldwide form of packaging for cigarettes.

A certain inadequacy in this type of pack is that the lid often does not assume the desired precise closed position in the closed position, in which free closing edges of the lid rest on corresponding closing edges of the box part. Rather, there is a gaping gap between the lid and the box part on the front of the pack. This effect is more common in hinged boxes with rounded or polygonal long edges.

To counteract the above deficiency, locking aids have already been proposed (DE-A 30 37 109). In this prior art, inward deformations are made in the collar side walls. When the hinged box is closed, these interact with corresponding deformations on the inside of the lid side walls.

This known closing aid for hinged boxes requires a greater manufacturing effort. In addition, there are undesirable design changes to the hinged box.

The invention has for its object to provide a hinged box with improved closing aid for the lid. In particular, the locking aid should be easy to manufacture and should not result in any striking changes to the packaging itself.

To solve this problem, the hinged box according to the invention is characterized in that at least one of the collar side walls in the upper area emerging from the box part has an outward deformation, on which the lid side walls rest with their inside in the closed position with increased frictional engagement.

In the closing aid according to the invention, the region of the collar protruding from the box part on the collar side walls is deformed outwards in such a way that the inner surfaces of cover side walls, which are formed in a conventional manner, bear against the collar side walls with increased friction in the closed position. The closing and opening process is not affected.

According to the invention, a deformation of the collar side walls in the sense of an outward curvature is brought about automatically by appropriate design of the collar, in such a way that the deformation occurs when the collar is correctly inserted into the box part.

According to a preferred embodiment of the invention, longitudinal collar edges are arranged divergingly between the collar front wall and the collar side walls, such that the width of the collar front wall increases upwards or towards the free edge protruding from the box part. The oblique position of the longitudinal edges of the collar with respect to the normal position is preferably approximately 2 ^° with respect to the vertical.

This design means that the collar sits with a narrower part (the collar front wall) in the box part of the hinged box. The free part of the collar protruding from the box part becomes increasingly wider. If the collar is arranged in the correct position in the box part, this geometrical shape of the longitudinal edges of the collar automatically results in an outward curvature in the upper region of the collar side walls protruding from the box part. The dimensions are chosen so that the bulge of the collar side walls protrudes beyond the contour predetermined by the collar, so that when the cover is closed and in the closed position of the same cover side walls bear with their inner surfaces with increased friction on the collar side walls and cause an additional closing force.

The hinged box and, accordingly, the collar are preferably designed with rounded (collar) longitudinal edges. These are each defined by a group of parallel grooves.

As a further closing aid, according to a proposal of the invention, upright punch cuts or the longitudinal edges of the collar are arranged in the side walls of the collar. As a result of the deformation or bulging, these form protruding edges, which likewise lead to an increase in the closing force.

Finally, a special feature of the hinged box according to the invention is the design of the front cover wall. This is designed according to the invention in one layer and has the shape of a rounded tongue. A blank is formed in the area of a box front wall with a correspondingly rounded edge (box abutting edge) which corresponds to the contour of the edge (lid abutting edge) of the lid front wall. This enables a material-saving arrangement of blanks within a panel.

Fig. 1

Eine Klappschachtel in Öffnungsstellung in Vorderansicht,

Fig. 2

eine Einzelheit der Klappschachtel gemäß Fig. 1, nämlich einen Ausschnitt eines oberen Randbereichs im Grundriß, bei vergrößertem Maßstab,

Fig 3

einen ausgebreiteten Zuschnitt für eine Klappschachtel gemäß Fig. 1,

Fig. 4

einen Zuschnitt für einen Kragen in ausgebreiteten Zustand,

Fig. 5

den Kragen gemäß Fig. 4 in der Faltstellung entsprechend der Anordnung in der Klappschachtel, in Vorderansicht.

Further details of the invention are explained below using an exemplary embodiment. It shows:

Fig. 1

A hinged box in the open position in front view,

Fig. 2

1 shows a detail of the hinged box according to FIG. 1, namely a section of an upper edge area in plan, on an enlarged scale,

Fig. 3

1 shows a spread blank for a hinged box according to FIG. 1,

Fig. 4

a cut for a collar in a spread state,

Fig. 5

4 in the folded position according to the arrangement in the hinged box, in front view.

In the drawings, a folding box is shown as a preferred application example, the four upright longitudinal edges 10, 11 of which are rounded. The hinged box consists of a box part 12 and a lid 13 pivotally connected to it. In FIG. 1, the hinged box is shown in a front view with the lid 13 open. This is completely pivoted backwards and therefore not recognizable.

The box part 12 usually consists of box front wall 14, box rear wall 15 and bottom 16. Box side walls 17 are each formed from side tabs 18 and 19 which partially overlap one another.

Correspondingly, the lid 13 includes a lid front wall 20, lid rear wall 21 and end wall 22. Lid side walls 23 are formed by lid side tabs 24 which overlap one another.

The rounded longitudinal edges 10, 11 are each determined by a number of parallel grooves 25. These extend in a region corresponding to the rounding of the longitudinal edges 10, 11 over the full length of the blank (FIG. 3), that is to say also in the region of the cover 13.

The hinged box is provided with a collar 26. This consists of a separate blank (FIG. 4) with a collar front wall 27 and collar side walls 28, 29. The collar 26 is also provided with rounded collar longitudinal edges 30, 31 which are aligned with the longitudinal edges 10, 11 of the box part 12 and the cover 13 correspond.

The collar 26 is inserted into the box part 12 such that an approximately half collar part 32 protrudes from the box part 12. At least the collar front wall 27 is bonded to the inside of the box front wall 14. The collar part 32 protruding from the box part is enclosed by the cover 13 in the closed position of the hinged box.

In the closed position, closing edges of the box part 12, on the one hand, and of the lid 13, on the other hand, lie against one another. These are, on the one hand, oblique side edges 33 of the box part 12 in the area of the box side walls 17 and, on the other hand, counter edges 34 in the area of the lid side walls 23. The aforementioned edges are oblique, sloping towards the front of the pack. In the area of the rear of the box, the edges lead to a pivot hinge 35 connecting the rear wall 15 of the box to the rear wall 21 of the lid.

At the front of the pack, the side abutting edges (side edge 33 and counter edge 34) are continued as a front edge 36 for delimiting the box front wall 14 and as a lid front edge 37 in the region of the lid front wall 20.

The collar 26 is arranged within the box part 12 such that the collar part 32 protruding from the box part 12 has an outward deformation in the region of the collar side walls 28 and / or 29. This is designed here as a curved arch 38 in cross section. The transverse dimensions of the collar 26 thereby increase in the direction of the free upper edge (see FIG. 1). The bulge 38 is dimensioned and designed so that it partially protrudes slightly laterally over the contours of the box part 12.

When the lid 13 is closed and especially in the closed position thereof, the inner surfaces of the lid side walls lie 23 with increased pressure and thus increased friction on the collar side walls 28, 29 in the region of the bulge 38. This can be deformed due to its shape and the material properties of the collar by the pressure of the lid side walls 23 inwards. As a result, a significantly increased closing force is transmitted to the cover 13, with the result that the closing edges 33, 34 and 36, 37 lie exactly against one another. Nevertheless, the handling of the pack is not affected.

The described deformation of the collar side walls 28, 29 arises in the present exemplary embodiment through the design of the collar 26 itself. The collar front wall 27 is designed with an increasing width due to the upward diverging course of the collar longitudinal edges 30, 31. This leads to a squeeze in the region of the collar side walls 28, 29 outside the box part 12 with the effect that the deformation, namely bulge 38, sets itself up automatically. The width of the collar front wall 27 can be selected such that it corresponds to the inside dimensions of the box part 12 in the region of its entry (width of the box front wall 14). The divergence of the collar longitudinal edges 30, 31 can be 2 °, in each case with respect to the longitudinal edges 10, 11.

The described oblique position of the collar longitudinal edges 30, 31 also applies to the version with rounded longitudinal edges. The grooves 25 in the region of the rounded collar longitudinal edges 30, 31 are parallel to one another. They can, as shown in the drawings, run diverging upwards in accordance with the longitudinal edges 30, 31 of the collar. For manufacturing reasons, however, it is better if the groups of the grooves 25 are directed parallel to one another.

The exemplary embodiment shown contains a further, additional measure for generating an increased closing force on the cover 13. For this purpose, the collar side walls 28, 29 provided in the region of the bulge 28 with an upright cut 39. In the present case, this is arranged adjacent to the upper edge of the collar 26, to be precise at the edge of the group of grooves 25. This also results in a slight inclination or divergence of the cuts 39. These end, moreover, at a short distance from the upper, free edge are closed.

The cut 39 springs open due to the bulging of the collar side walls 28, 29 within the packaging. An additional projecting retaining edge 40 is created, which causes a further increase in the friction on the inside of the cover side walls 23 and thus an increase in the closing force. The cut 39 is arranged in the region of the bulge 38 such that the projecting retaining edge 40 exerts a barb-like effect on the lid side walls 23 when the lid 13 has reached the closed position. The holding edge 40 is therefore directed towards the front of the package.

The cut for the hinged box and thus also the hinged box itself is designed in a special way, regardless of the locking aids described. As can be seen above all from FIG. 3, the front edge 37 of the lid is designed in a special way, namely shaped like an arc, in particular as part of a circular arc. This is followed laterally by rectilinear edges in the area of the lid side walls 23, namely the counter edges 34. The entire contour delimiting the cut according to FIG. 3 at the lid-side end accordingly consists of an arcuate central area (lid front edge 37) and subsequent straight legs (Opposite edges 34).

At the opposite end, the cut is designed accordingly. The front edge 36 as the upper edge of the box front wall 14 is also (concave) curved, to match the lid front edge 37. The adjoining side edges 33 of the box side walls 17 are straight, in accordance with the contour of the lid.

A blank designed in this way can be produced in a material-saving manner, because the blanks in the area of the described edges 33, 34; 36, 37 can lie directly against one another. The adjacent blanks can only be separated from one another by a single punching or separating cut, without any material waste occurring.

In the finished pack, the cover front wall 20 is single-ply. The lid inner tabs that are otherwise customary in such packs are therefore missing. In addition, the rounded design of the closing edges matches the rounded longitudinal edges 10, 11.

Hinged boxes with rectangular longitudinal edges or polygonal or beveled longitudinal edges can be designed analogously.

Claims (9)

Folding box (hinge-lid pack) made of (thin) cardboard, with a box part (12) and a lid (13) pivotably connected to it, in particular for accommodating a cigarette group, one of which partially protrudes from the box part (12) Collar (26) with collar front wall (27) and collar side walls (28, 29) is arranged, the area (collar part 32) projecting from the box part (12) in the closed position of the cover (13) is enclosed by the latter, characterized that at least one of the collar side walls (28, 29) in the upper area (collar part 32) emerging from the box part (12) has an outward deformation, on the lid side walls (23) with its inside in the closed position under increased Apply frictional engagement. Hinged box according to claim 1, characterized in that the outward deformation in the region of the collar side walls (28, 29) is designed as a bulge (38) with an arcuate contour in cross section. Hinged box according to claim 2, characterized in that between the collar front wall (27) on the one hand and the collar side walls (28, 29) on the other hand, formed collar longitudinal edges (30, 31) protrude towards the free part of the box (12) The end of the collar (26) is diverging, in such a way that the collar (26) with the (curved) collar side walls (28, 29) projects laterally beyond the dimensions defined by the box side walls (17) of the box part (12). Hinged box according to claim 3, characterized in that the longitudinal collar edges (30, 31) are each defined and rounded off by a plurality of grooves (25), the groups of grooves (25) each defining a longitudinal collar edge (30, 31) ) run parallel to each other. Hinged box according to claim 3, characterized in that the longitudinal collar edges (30, 31) diverge at an angle of approximately 2 ° with respect to the longitudinal edges (10, 11) of the box part (12) such that the effective collar front wall (27) outside the box part (12), in particular in an area assigned to the upper, free edge of the collar (26), has a greater width than the inside dimension of the box part (12) defined by the box side walls (17). Hinged box according to claim 1 and one or more of the further claims, characterized in that at least one of the collar side walls (28, 29) has an essentially upright cut in the region of the deformation, in particular in the region of the bulge (38) (39) is provided to form a retaining edge (40) which protrudes due to the deformation or bulging (38) of the collar side wall (28, 29) and increases the friction with respect to the inside of a cover side wall (23). Folding box (hinge-lid pack) made of (thin) cardboard with a box part (12) and a lid (13) pivotally connected to it, in particular for holding a cigarette group, a collar partially protruding from the box part (12) (26) with a collar front wall (27) and collar side walls (28, 29) is arranged, the area (collar part 32) projecting from the box part (12) is enclosed by the cover (13) in the closed position thereof and between the box part (12) and lid (13) formed closing edges in the region of box side walls (17) and lid side walls (23) run obliquely, falling towards the front of the pack, characterized in that a lid front wall (20) is formed in one layer and in one the (lower) area facing the box part (12) is rounded like a tongue, forming a rounded free edge (front cover edge 37). Hinged box according to claim 7, characterized in that the arc-shaped lid front edge (37) forms a continuation of the lid-side closing edges in the region of the lid side walls (23) with respect to the inclination (continuation of counter edges 34). Hinged box according to claim 7 or 8, characterized in that the free edges of a box front wall (14) with adjacent side tabs (19) are designed in accordance with the end contour of the lid front wall (20) including lid side tabs (24), such that that blanks in this area can be separated from one another without waste.

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