EP2953861B1 - Packaging container and substrate blank - Google Patents

Description

The invention relates to a packaging container for holding flat foodstuffs, folded from a single-piece substrate blank, in particular a carton blank, and a one-piece substrate blank for folding such a packaging container according to claim 12.

Packaging containers made of cardboard for holding food are known in a variety of forms and configurations; However, so far there is no packaging container for toast products or sandwiches, which is characterized in that it is easy to open and the food product in the open state is easily removed. Most known carton packaging containers, such as candy boxes, are characterized in that one surface side or surface wall is either hinged or completely removable from a bottom part in the case of a two-part container.

From the GB 1 330 270 A a packaging container folded from a one-piece substrate cut is known for holding cigarettes and narrow cigars. An opening which can be produced by tearing has a small longitudinal extent.

From the US 3,180,553 A is also a cardboard packaging with a small opening cross-section known.

The US 2,404,312 A describes a cigarette packaging.

The DE 20 2012 001 927 U1 describes a folding box with oval edges.

The US 2,367,706 A describes a paper package with a telescope section.

Based on the aforementioned prior art, the present invention seeks to provide a suitable in particular for receiving flat food products, preferably made of cardboard packaging container, which is foldable from a one-piece substrate cut and which is characterized by a comfortable handling, such that the packaging container easy to open and the food product is easy to remove. Furthermore, the object is to provide a substrate blank for such a packaging container.

This object is achieved with regard to the packaging container with the features of claim 1 and with respect to the substrate section with the features of claim 12. Advantageous developments of the invention are specified in the subclaims. All combinations of at least two features disclosed in the description, the claims and / or the figures fall within the scope of the invention.

The invention is based on the idea, the packaging container in the region of its peripheral wall, ie openable in the region of its narrow sides, such that an opening portion (= opening wall portion) of the peripheral wall in the circumferential direction can be torn open, such that in this opening operation designed as a weakening line and itself circumferentially extending fold line around which the opening portion is folded over the face sides, along the longitudinal extent of the fold line tears open and so an opening for removing the food is released, the opening width corresponds to the circumferential extent of the opening portion at least approximately the distance of the side walls in an adjacent to the opening portion area. Furthermore, it is provided that the opening section (before opening) overlaps a fixed first peripheral wall section in the circumferential direction, in particular against a tearing direction, and is fixed with this first overlapping section to the first peripheral wall section, in particular by gluing, preferably such that an adhesive area or portion is spaced from a counter to a tear in the circumferential direction located first end of the overlapping portion to allow to grip the overlapping portion of the opening portion of its circumferentially opposite the tear direction oriented end and by pulling first the connection to the underlying, fixed peripheral wall portion solve and tear in the further opening movement, preferably as a line of weakness, in particular as a perforation line formed fold line along its longitudinal extent or tear, then in the To obtain an open peripheral wall or a circumferentially extending opening whose opening width corresponds to the distance of the side surfaces in this area, in this way, the packaged food product slide out, the large opening width allows the thickness of the food product initially approximately the Distance of the surface sides corresponds. The fold line has the function of a control seal.

As mentioned above, it is an essential feature of the invention that the opening section ruptures so that essentially only the two, preferably at least approximately parallel surface sides remain in the opening region, so that the width of the opening, measured perpendicular to the circumferential extent at least approximately equal to the distance of the surface sides. In order to facilitate the removal of a food product further, the invention provides that the opening has a length measured perpendicular to its width, which corresponds to the distance of two mutually opposite, preferably parallel fixed peripheral wall sections. Here, the opening length does not necessarily mean its circumferential extent, but the length of the obtained free cross-sectional area which is relevant for the removal of the food product. The width of the cross-sectional area corresponds to the previously discussed opening width.

As mentioned above, it is particularly preferred if the first overlapping section of the opening section is bonded to the first stationary peripheral wall section in a first adhesive section. In order to allow a particularly simple and above all defined tearing or loosening of the overlapping portion of the underlying first peripheral wall portion is provided in a further development of the invention that the adhesive portion is bounded by at least partially surrounding the first adhesive portion, preferably designed as a score line weakening line , Preferably, this weakening line runs completely around the adhesive section. The weakening line causes the packaging to tear open in a defined manner and not to be destroyed indefinitely during the tearing process. Preferably, the at least partially around the adhesive portion circumferential line of weakness is located within the fixed peripheral wall portion. Additionally or alternatively, such, especially in the area stamped line of weakness can be provided on an inner side of the first overlap portion.

It is particularly expedient if the opening section projects beyond a fixed overlapping wall section not only in a region located in the circumferential direction, but in the region of both end regions lying in opposite circumferential directions.

In a further development of the invention is advantageously provided that the opening portion overlaps with a second overlapping portion facing away from the first overlap portion a fixed second peripheral wall portion in the circumferential direction and is fixed to the second peripheral portion, in particular by gluing. In this way, the user can choose in which direction he wants to tear the opening portion, in other words, the package is openable on its peripheral wall alternatively in two mutually opposite directions. Such a configuration also makes it possible, after rupturing the fold line formed as a line of weakness, over which the opening portion is materially connected to one of the side surfaces, completely demolished. For this purpose, the procedure is preferably such that, starting from an overlapping area, an adhesive bond to the fixed peripheral wall is first loosened, then pulled further and the fold line is separated and then the opposite bonding area of the further overlapping section is released by tearing at the end of the opening process.

In this case, it is particularly expedient if the connection of the second overlapping section to the second stationary peripheral wall section likewise has a weakening line which circumscribes an adhesive section in order thus to permit a defined opening.

For this purpose, the intended two peripheral wall sections, which are further overlapped by both circumferential directions which are opposite from one another by the opening section, are opposite or on two opposite, preferably parallel sides of the package, so that an entire peripheral wall side of a preferably at least approximately cuboid packaging is completely rupturable.

As mentioned above, it is essential that the opening section which can be torn open or torn off in the circumferential direction is connected to one of the two surface sides by means of a fold line designed as a line of weakness. According to the invention, the opening section is delimited by a further fold line which runs parallel to the fold line designed as a line of weakness, the further fold line connecting the opening section with a folded-over tab. This tab can now be glued according to a first alternative with the opposite surface side, more precisely with the inside. According to a second alternative, the tab is simply folded inwards into the package, which provides sufficient security.

In the case of bonding the tab, it is preferred if the fold line of the tab is also formed as a weakening line, in particular as a perforation line.

To obtain a pleasing aesthetic impression and to facilitate the opening operation, it is preferred if the opening portion has two circumferentially spaced and preferably over a circumferential angle of 90 ° extending arc sections, wherein it is particularly preferred if at least one of the arc sections adjacent to an overlap section with which the opening portion overlaps a stuck peripheral wall portion against a tearing direction. Preferably, the opening portion in the region of its arcuate portions, that is laterally of the arcuate portions is not firmly connected to the surface sides.

In order to create the impression of a more or less continuous or regularly curved arc section, it is provided according to the invention that each arc section has a plurality of parallel and perpendicular to the circumferential extent of the opening portion extending bending lines to thereby form joints that ensure that bent the arc section defined is.

It is particularly expedient if the opening section, preferably the entire peripheral wall, is arranged at right angles to the surface sides, in order to obtain at least approximately a parallelepiped shape, which optionally may have arc sections in the region of the opening section, as explained above.

To stabilize the packaging container is provided according to the development that one of the surface sides is integrally connected to two opposing peripheral wall sections and in each case over an angular portion which extends at an angle to both the surface side and to the associated peripheral wall portion, wherein the two peripheral wall sections preferably perpendicular to the surface side are arranged. In this case, the angle sections preferably extend at least approximately at a 45 ° angle to the surface side and to the respective peripheral wall section. In order to enable the angled orientation, it is provided that each angle section are connected to the surface side by a first fold line bent along its longitudinal extent with the associated peripheral wall section and a second fold line bent in the direction of its longitudinal extent, wherein the curvature or bending of the Folding lines is oriented away from one another, preferably such that the angle section in a central region of its longitudinal extent have a greater width measured perpendicular to the longitudinal extent than in an edge region. One optical, desirable side effect of the angle sections is that they are reminiscent of the shape of a Toastandwiches.

It is particularly expedient for a food product to be received in the packaging container, which is preferably a toasted or toastable food product which even more preferably has two toast bread surface sides, between which a filling comprising preferably cheese is received.

Preferably, the bread area sides are fully interconnected so as to safely prevent leakage of the filling.

It is particularly expedient if further education according to the food product is packaged in a plastic film or in a plastic bag, which is located together with the food product in the packaging container.

The invention also leads to a one-piece substrate blank, in particular a cardboard blank, for folding a packaging container according to the concept of the invention formed as described above. The one-piece substrate section comprises two surface side regions which form the surface sides of the packaging container in the folded state, the two surface sides being connected in each case via a fold line to a peripheral wall region over which the surface side regions are spaced from one another. In addition, it is provided that on one of the surface side regions, in a folded packaging box an opening portion forming peripheral wall area is defined by a folding line, in particular perforation line formed fold line, wherein the opening portion is dimensioned so that in the folded state, the peripheral wall portion in the circumferential direction with a Overlap portion overlaps and with this at the peripheral wall area can be fixed, in particular festklebbar, preferably on both sides.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings.

Fig. 1

einen einteiligen Kartonzuschnitt zum Falten eines Verpackungsbehälters,

Fig. 2

einen aus einem Kartonzuschnitt gemäß Fig. 1 gefalteter Karton-Verpackungsbehälter.

These show in:

Fig. 1

a one-piece carton blank for folding a packaging container,

Fig. 2

one from a carton blank according to Fig. 1 folded cardboard packaging container.

In the figures, like elements and elements having the same functions are denoted by the same reference numerals.

In the figures, some dimensions are shown. These are not intended to limit the scope of the invention as expressed in the claims. However, arbitrary dimensional ratios are to be disclosed as further education and claimable.

In Fig. 2 is one of a one-piece substrate blank 1 according to Fig. 1 folded packaging container 2 shown in cardboard.

The packaging container 2 has a substantially cuboid shape and comprises two parallel surface sides 3, 4 which are spaced apart from each other by a peripheral peripheral wall 5 forming the narrow sides of the packaging container 1, the peripheral wall 5 being substantially perpendicular to the surface extents of the surface sides 3, 4.

The peripheral wall 5 comprises a strip-shaped opening section 6, which overlaps in each case a fixed peripheral wall section in both circumferential directions, each with an overlapping section. In Fig. 2 a first overlapping portion 7 is shown, which overlaps a circumferential first circumferential wall portion 8 located thereunder in the circumferential direction and is glued thereto with an adhesive portion. In the circumferential direction at the first overlapping portion 7 formed by an end portion, a first arc portion 9 connects, which is provided with a plurality of parallel and parallel to the circumferential extent of the opening portion 6 extending bending lines 10 in order to achieve a defined bend. To each of the two longitudinal sides of the bending section 9 extends a partial arc section 11 of the respective surface side 3, 4.

In addition to the first overlapping portion 7, there is provided a second overlapping portion, not shown in the drawing, of the opening portion 6 opposite to the first overlapping portion 7 and having a second peripheral wall portion (see the substrate section in FIG Fig. 1 ) is overlapped in the opposite circumferential direction, against the tearing direction of the second overlapping portion and fixed thereto by gluing.

The opening portion 6 is connected to the front side of the plane 3 in the plane of the drawing by means of a folding line 12 (line of weakness) extending in the circumferential direction and designed as a perforation line, or angled relative to the surface sides by 90 °.

The first overlapping portion 7 (as well as the second overlapping portion) each form an opening tab 13 which is grasped by hand can be. By pulling the opening portion 6 in the circumferential direction (in the respective tear direction), the first or second overlapping portion is first detached from the associated, overlapped peripheral wall portion, whereupon the fold line 12 tears along its longitudinal extent, so that an opening is obtained whose width B, measured perpendicular to the surface extension of the surface sides 3, 4, the distance between the two surface sides 3, 4 corresponds.

As it turned out Fig. 2 results, is located between the plane in front of the drawing surface side 3 and an adjacent peripheral wall portion 14, an angular portion 15 which extends at an angle to both the front surface side 3 and the peripheral wall, more precisely to the peripheral wall portion 14 and that in the embodiment shown at an angle of about 45 °. The transition between the surface side 3 and the angle portion 15 is formed by a curved bending line 16 and the transition between the angle section 15 and the peripheral wall portion 14 also via a curved bending line 17, wherein the bending lines 16, 17 are curved away from each other, so that a kind of elliptical shape or an intersection of two imaginary circles as a shape of the angle section 15 results. There are a total of two parallel to each other or on both sides of the surface side 3 extending angle sections 15 predetermined.

In Fig. 1 is that too Fig. 2 associated substrate blank 1 shown in cardboard. Evident are the two (later) surface sides 3, 4, which are spaced from each other via a later opening portion 6 peripheral wall portion 18 (bottom portion), wherein the peripheral wall portion 18 via a respective folding line 19, 20 with the first and second surface side 3, 4 is connected.

Parallel to the fold lines 19, 20 runs as a line of weakness, here perforation line formed fold line 12 which connects the strip-shaped opening portion 6 hinged to the surface side 3. In the circumferential directions, the fold line 12 in the folded state in each case includes an arc section in both directions, namely a first arc section 9 and a second arc section 22, each comprising a plurality of parallel bending lines 10. An overlapping section adjoins each curved section 9, 22, namely a first overlapping section 7 and a second overlapping section 23 remote therefrom, wherein the first overlapping section 7 can be glued to a first gluing section 24 of a first fixed peripheral wall section 8, this first gluing section 24 being joined by a first gluing section 24 as punching (preferably not punched through) alternatively perforation formed material weakening line 25 is surrounded.

The situation is analogous with the second overlapping section 23, which can be bonded to a second adhesive section 26 of a second circumferential wall section 27, whereby the second adhesive section 26 is surrounded by a material weakening line, here referred to as second material weakening line 28. First and second peripheral wall portion 8, 27 are in the folded state of the packaging container opposite and are arranged at right angles to both the surface sides 3, 4 and to the fold lines 12, 19, 20th

Positive for the stability and the total handling are a first angle section 15 and a second angle section 29, which form a transition between the surface side indicated by the reference numeral 3 and the first and second peripheral wall sections 8, 27, wherein the angle sections 15, 29 each over two curved bending lines with their adjacent surfaces, that is each a peripheral wall portion and the surface side 3 are connected.

Parallel to the fold line formed as a line of weakness 12 is another fold line 30 which connects a tab 31 with the opening portion 6, wherein the tab 31 is preferably in the folded state in the packaging container interior and if necessary, but not necessarily can be glued to the inside the second surface side 4.

Out Fig. 1 is also the length L of a later resulting opening to recognize. This extends from the first to the second overlap wall portion 8, 27. The width B corresponds to the width of the strip-shaped opening portion 6 and thus the distance of the two surface sides 3, 4th

LIST OF REFERENCE NUMBERS

1

substrate cutting

2

packaging container

3

surface side

4

surface side

5

peripheral wall

6

opening section

7

first overlap section

8th

first peripheral wall section

9

first arc section

10

bending lines

11

Part arcs

12

fold line

13

opening tab

14

peripheral wall

15

first angle section

16

elastic line

17

elastic line

18

Peripheral wall portion

19

fold line

20

fold line

22

second arc section

23

second overlap section

24

first adhesive section

25

first material weakening line

26

second adhesive section

27

second peripheral wall section

28

second material weakening line

29

second angle section

30

fold line

31

flap

B

width

L

length

Claims (12)

1. A folded packaging container (2) for receiving flat foodstuffs made of a one-part substrate blank, more particularly a cardboard blank,
   with two surface sides (3, 4) which are separated by a surrounding circumferential wall (5, 14) and are at least approximately in parallel with other,
   with an opening section (6) as part of the circumferential wall (5, 14) which is folded with regard to the surface sides (3, 4) via a folding line (12) in the form of a weakening line, more particularly a perforation line, and which with a first overlapping section (7) overlaps a fixed first circumferential wall section (8) in the circumferential direction and is fastened, in particular through adhesion, on the first circumferential wall section (8),
   wherein the opening section (6)can be opening through gripping the overlapping section (7, 23) and pulling the overlapping section (7, 23) in the surrounding direction, in such a way that on opening the folding line (12) tears open in the circumferential direction and an opening resulting after opening extending in the circumferential direction corresponds in terms of its width (B) measured perpendicularly to its circumferential extent to the distance between the surface sides (3, 4),
   characterised in
   that the opening resulting through pulling off the opening section (6) has a length (L) which corresponds to the distance between two opposite, fixed and parallel circumferential wall sections (8, 27).
2. The packaging container according to claim 1, characterised in
   that the first overlapping section (7) is adhered to a first circumferential wall section (8) in a first adhesion section (24), and in that
   the first adhesion section (24) is delimited by a first material weakening line (25) which surrounds the first adhesion section (24), at least in parts and is preferably in the form of a punch-out line.
3. The packaging container according to any one of claims 1 or 2,
   characterised in
   that in the circumferential direction with a second overlapping wall section (23) facing away from the first overlapping wall section(8) the opening section (6) overlaps a fixed second circumferential wall section (27) and is fastened, more particularly through adhesion, to the second circumferential section (27).
4. The packaging container according to claim 3, characterised in
   that the second overlapping section (23) is adhered to the second circumferential wall section (27) in a second adhesion section (26) and in that the second adhesion section (26)is delimited by a second material weakening line (28) which surrounds the second adhesion section (26) at least in parts and is preferably in the form of a punch-out line.
5. The packaging container according to any one of the preceding claims,
   characterised in
   that the opening section (6) is connected via the folding line (12) to a first surface side (3, 4) and via a further folding line (30) extending in parallel to this folding line (12) is connected in one piece with a folded-over tab (31) which is inserted into the packaging container and preferably extends in parallel to a second side surface (4, 3).
6. The packaging container according to any one of the preceding claims,
   characterised in
   that the opening section (6) comprises two curved sections (9, 22) at distance from one another and preferably extending over a circumferential angle of 90°.
7. The packaging container according to claim 6,
   characterised in
   that each curved section (9, 22) comprises several parallel bending lines (16, 17) extending perpendicularly to the circumferential extent of the opening section (6).
8. The packaging container according to any one of the preceding claims,
   characterised in
   that the opening section (6), preferably the entire circumferential wall (5) is arranged at right angles to the side surfaces (3. 4).
9. The packaging container according to any one of the preceding claims,
   characterised in
   that one of the side surfaces (3, 4) is connected in one piece to two circumferential sections (8, 27) in each case by means of an angle section (15, 29) which extends at an angle to both the side surfaces (3, 4) and to the respective circumferential wall section (8, 27) in particular at an angle of 45° in each case, wherein each angle section (15, 29) is connected via a first bending line (16, 17), bent along its longitudinal extent, to the associated circumferential wall section (8, 27) and via a second folding line, bent in the direction of its longitudinal extent, to the side surface.
10. The packaging container according to any one of the preceding claims with a food product packed therein, more particularly a toasted product or a product to be toasted, in particular comprising two bread surfaces between which there is a filling, preferably comprising cheese.
11. The packaging container according to claim 10, characterised in
    that the food product is held in a plastic film or a plastic bag in the packaging container (2).
12. One-piece substrate blank, more particularly cardboard blank, for folding a packaging container (2) according to any one of claims 1 to 11 with two side surfaces areas which are at a distance from one another via a circumferential wall area (18)connected to these via a folding line (19, 20), wherein on one of the side surface areas a circumferential wall area (18) forming the subsequent opening section (6) is determined via a folding line (12) in the form of a weakening line, in particular a perforation line, wherein the opening wall section (6) is dimensioned in such a way that in the folded state it overlaps a fixed circumferential wall section (8, 27) in at least one circumferential section with at least one overlapping section (7, 23) and with this can be fastened, more particularly adhered, to the respective circumferential wall section (8, 27),
    characterised in
    that the subsequent opening section (6) has a length (L) which corresponds to the distance between two opposite, fixed, parallel circumferential wall sections (8, 27).

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