EP0828662B1 - Recloseable collapsible carton with a securing device for its opening - Google Patents

Abstract

The invention concerns a collapsible carton which has a rectangular cross-section and a lid which is hinged on the upper edge of one side and has a three-sided border. When the lid is closed, its border extends parallel to the other three sides (5, 8a, 10a, 8b, 10b) and abuts them closely on the exterior. Hinged at the upper edge of at least one of the three sides is a tab (12) which is bent downwards when the lid is closed so that the lower edge of the tab abuts a stop edge (14) on the interior of the lid border. According to the invention, the tab (12) is disposed on at least one of the sides (8a, 10a, 8b, 10b) adjacent the lid hinge. In the inner layer (6a, 6b) of the double-layer lid border, immediately adjacent the lid, is a material recess (13) whose dimensions correspond at least to those of the tab (12), such that the lower edge of the recess (13) in the inner layer forms the stop edge (14).

Description

The invention relates to a laterally fillable folding box with a rectangular cross section a lid hinged to the upper edge of one side with a three-sided Edge with the edge parallel to the when the lid is closed remaining three sides stretching and tightly fitting, and on the top edge at least one of the three sides, that are adjacent to the lid linkage, at least one tongue is articulated is bent vertically when the lid is closed at the articulation point and lies directly on the outer surface of its associated side and with it bottom edge abuts a shape-fitting stop edge that is arranged on the inside of the double-layer lid edge. Such a folding box is known from document US-A-4150748.

There are various designs for rectangular folding boxes with one Lid with at least three-sided lid edge after the first opening can be closed again with the lid to protect existing box contents. Often half such boxes Inner frames that are separately formed and glued or integrated Form are articulated and the Aüreißfaden or a similar Device for opening the package have one to the Folding box hinged lid results. The reclosure takes place by putting the lid over the lugs formed from the frame. The lid is thus loosely over the complaining. If the once opened If the package falls over, the lid is pushed open by the product flow so that Product can leak. It also happens that the lid, due to the material stiffness, has a spring force that is lighter Touching the folding box leads to the unwanted opening of the lid.

In order to reduce this disadvantage, there are inner frames with incisions or punched tongues in which the lid can be clamped. This However, the solution is cumbersome and does not lead to an automatic one Opening security.

There are also known constructions for folding boxes, in which on the A tongue is articulated on the upper edge of one side, which when the Lid is bent vertically downwards at the articulation point and on lies directly on the outer surface of its associated side. That tongue bumps with its lower edge against a stop edge that is on the inside of the Lid edge is arranged. This solution has the disadvantage that both for the articulated tongue as well as for the device that the Stop edge for the tongue forms, additional material is required. Tongue and the material forming the stop edge become one piece and only made separately by a perforation, the first opening is the Folding box very cumbersome.

The problem underlying the invention is to secure against propose unintentional opening, which has the disadvantages known Avoids solutions, and especially for those that have to be filled from the side Folding boxes is suitable.

This problem is solved according to the invention in that the well-known folding box in the inner layer of the double-layered lid edge, immediately adjacent to the lid, one Material recess, in particular a cutout is available, the Dimensions to which the tongue is adapted, so that the lower edge of the recess or cutout in the inner layer forms the stop edge.

No additional material is needed for this solution and it is suitable for laterally fillable folding boxes. If the tongue is on one or or arranged on both narrow sides, this has the additional advantage that the narrow sides are steeper against indentation than the long side and thus unintentional loosening of the tongue is more effectively avoided. The Snap the tongue into the recess forming the stop edge clearly heard, so that the user about the functioning of the Fuse is informed.

If the tongue has one opposite the articulation line, parallel to it. running edge, a particularly secure-acting fuse is formed against unintentional opening of the lid. The tongue can be in both arranged outside as well as in the inner wall of a multilayer page be. If the cardboard material is steep, the arrangement is on the outer wall more advantageous because the outer wall through the inner wall is trimmed so that it does not collapse when the blank is folded presses inwards through the tongue that is deflected and thus a gap forms between the side walls. With flexible material that brings Arrangement on the inner wall the advantage that the tongue through the Redirection over the outer wall receives a higher preload.

In the case of steep cardboard materials in particular, it is advantageous to use the articulation line part of the tongue so that it can be bent more easily can. A bevel on the side edge of the tongue that the Lid linkage is turned away, leads to an easier snap the tongue.

Fig. 1

den Zuschnitt für eine erfindungsgemäße Faltschachtel, bei der die Zunge an beiden inneren Seitenwänden angelenkt ist;

Fig. 2

den Zuschnitt für eine Faltschachtel, bei der die Zungen an beiden äußeren Seitenwänden angeordnet ist;

Fig. 3

die perspektivische Ansicht eines Ausschnitts einer oberen Faltschachtel mit geöffnetem Deckel und

Fig. 4

eine Schnittansicht gemäß der Linie IV-IV nach Fig. 3, jedoch mit geschlossenem Deckel.

These and other advantages of the folding box according to the invention are illustrated by the detailed description of exemplary embodiments, which are shown in the attached drawing. Show in it

Fig. 1

the blank for a folding box according to the invention, in which the tongue is articulated on both inner side walls;

Fig. 2

the blank for a folding box in which the tongues are arranged on both outer side walls;

Fig. 3

the perspective view of a section of an upper folding box with the lid open and

Fig. 4

a sectional view along the line IV-IV of FIG. 3, but with the lid closed.

Fig. 1 shows the five-sided blank of a laterally fillable Folding box with a tear aid 11. The cut is first folded and the page 1 is partially underneath the tear aid 11 with the Side 5 glued, with side 1 lying on the outside. After that, the package erect and the bottom flaps are in the order 9b, 8b, 10b / 6b and finally 7b struck and at the same time in love with each other. The package is brought up and filled with the side still open. Then the head side is analogous to the bottom in the order 9a, 8a, 10a / 6a and 7a closed. The package is then rotated 90 ° and brought into the position of use, the side 2 the top and the Side 1 form the front.

When opening the package on the tear-open aid, a lid is formed three-sided lid edge, which is on the crease line between pages 2 and 3 is articulated. This cover has two cutouts 13 on the inside on. The folding box box has a collar through which the Parts of the long sides 3 and 5 as well as double layers are on the tear aid the narrow sides through the upper part of the outer sides 10a and 10b and the inner sides 8a and 8b is formed. At this Construction are the tongues 12 on the inside Side walls 8a and 8b articulated. When closing the lid these tongues down over the top edge of sides 10a and 10b bent over and snap into the when the lid is fully closed Recesses 13 audibly.

If the material is stiffer, additional cutouts 13 'can be made on the Upper edges of the side walls 10a and 10b are provided, as in Fig. 1 are indicated by dashed lines. Then that doesn't apply Bend the tongue over the top edge of pages 10a and 10b.

Fig. 2 shows the corresponding blank of a folding box, in which the Tongues 12 are hinged to the outer side walls 10a and 10b. In addition, pages 1, 6a and 6b are only half-surface, so that they end at a certain distance below the tear aid 11. At In this exemplary embodiment, the articulation lines of the tongues 12 have a partial material separation, which causes the tongue to bend, particularly easy with steep materials. Also point the tongues have a bevelled inner edge.

In Fig. 3, the upper left corner of a folding box is in the open state shown in perspective. In this embodiment, the folding box is the tongue 12 is articulated on the outer narrow side 10a. By pulling it off of the tear thread 11, the sides 1 and 6a visible here are divided been so that under the by removing the tear thread gap formed a narrow strip of pages 1 and 6a and above this gap are the remaining parts of pages 1 and 6a, the one Form part of the lid rim. It can clearly be seen that the tongue 12 when opening the lid 2 by its spring force upwards is pivoted and stands approximately to the side of the folding box. In the open Cover the cutout of the material recess 13 can be seen, the after is covered on the outside by the revived side 7a.

If the lid is closed, the edge of the lid opens with its part 6a the tongue 12 and bends it vertically downwards. The lid edge it bulges outwards until it looks far enough has lowered so that the tongue 12 in the by Material recess formed cutout 13 can snap. This Snapping is clearly audible so that the user can see the information has that the opening lock is in operation.

The situation resulting with the lid closed is shown in FIG. 4 as Sectional drawing along the line IV-IV shown in Fig. 3. The cut is placed so that it falls into the cutout 13 and only the front Represents side edge of the tongue 12 in the uncut state. Should the Box can be opened again, the user can counter the lid raise some resistance of the snapped tongue. For The user can simplify the box on both narrow sides Press far inwards so that the tongue 12 protrudes from the stop edge 14 solves. The lid then automatically jumps slightly due to its spring force upwards and the box can be opened easily.

Claims (7)

1. A laterally fillable folding box of rectangular cross-section with a lid (2) hinged to the upper edge of one side (3) and comprising a three-sided edge (1,6a,6b,7a,7b), the edge (1,6a,6b,7a,7b) extending parallel to the other three sides (5,8a,8b,10a,10b) and bearing tightly on the outside when the lid (2) is closed and at least one tab (12) being hinged to the upper edge of at least one of the three sides (8a,8b,10a,10b) adjacent the lid hinge, the tab (12) being directed vertically downwards at the hinge when the lid (2) is closed, bearing directly against the outer face of its associated side (10a,10b) and abutting at its lower edge against a correspondingly shaped stop edge (14) arranged on the inner layer (6a,6b) of the double-layer lid edge (6a,6b,7a,7b), characterized in that an opening, more particularly a cutout (13), is provided in the inner layer (6a, 6b) of the double-layer edge of the lid immediately adjoining the lid (2), its dimensions being adapted to those of the tab (12) so that the lower edge (14) of the opening or cutout (13) in the inner layer (6a,6b) forms the stop edge (14).
2. A folding box as claimed in claim 1, characterized in that the dimensions of the opening (13) at least correspond to those of the tab (12).
3. A folding box as claimed in claim 1 or 2, characterized in that the edge of the tab (12) opposite its hinge line runs parallel to the hinge line.
4. A folding box as claimed in any of claims 1 to 3, characterized in that the tab (12) is arranged on the outer wall (10a,10b) of a multilayer side.
5. A folding box as claimed in any of claims 1 to 3, characterized in that the tab (12) is arranged on the inner wall (8a,8b) of a multilayer side.
6. A folding box as claimed in any of claims 1 to 5, characterized in that the hinge line of the tab (12) is partly divided.
7. A folding box as claimed in any of claims 1 to 6, characterized in that the side edge of the tab (12) remote from the lid hinge is bevelled.

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