A BLANK FOR FORMING A PACKAGE AND A PACKAGE FORMED FROM SUCH A BLANK

Abstract

The disclosure relates to a blank (1) configured to form a package (100), the blank (1) comprising a bottom panel (10), a rear wall panel (21), a front wall panel (22), two opposing end wall panels (31, 32), two opposing sets of top wall panels (40), two rear sets of corner panels (50) and two rear locking flaps (55). Each set of top wall panels (40) is configured to form a double-walled top wall (140) when the blank (1) is erected to form the package (100). Each rear locking flap (55) being foldably connected to an outwardly facing longitudinally or transversally extending side of the respective rear set of corner panels (50) and extending away from the respective rear set of corner panels (50) such that the rear locking flap (55), as the blank (1) is erected into the package (100), extends longitudinally inwardly from the respective end wall panel (31, 32) and such that each rear locking flap (55) is positioned between the respective first and second top wall panel (41, 42) forming the double-walled top wall (140). The disclosure also relates to a package (100) formed from a blank (1).

Claims

1. A blank configured to form a package, the blank comprising: a bottom panel, a rear wall panel foldably connected to a first longitudinally extending side of the bottom panel, a front wall panel foldably connected to a second longitudinally extending side of the bottom panel, two opposing end wall panels foldably connected to a respective one of two opposing transversally extending sides of the bottom panel, two opposing sets of top wall panels foldably connected to a respective one of the two end wall panels along transversally extending sides of the respective end wall panel, opposite the bottom panel, wherein each set of top wall panels comprises a first top wall panel and a second top wall panel foldably connected to each other and arranged one after the other as seen along a longitudinal direction, wherein each set of top wall panels is configured to form a double-walled top wall when the blank is erected to form the package, wherein the first top wall panel is connected to the end wall panel and is configured to form an upper surface of the double-walled top wall and the second top wall panel is connected to the first top wall panel and is configured to form an inside surface of the double-walled top wall, two rear sets of corner panels, each rear set of corner panels being located at a respective rear corner of the bottom panel and interconnecting a respective end of the rear wall panel with a respective end of the respective end wall panel, wherein each rear set of corner panels comprises an inclined fold line extending along a virtual line extending diagonally away from the respective rear corner of the bottom panel, wherein each rear set of corner panels is foldable along the inclined fold line relative to the rear wall panel, to the respective end wall panel and to each other about the inclined fold line into triangular flaps into an interior of the package and alongside the respective end wall panel as the blank is erected into the package, two rear locking flaps, each rear locking flap foldably connected to an outwardly facing longitudinally or transversally extending side of the respective rear set of corner panels and extending away from the respective rear set of corner panels such that the rear locking flap, as the blank is erected into the package, extends longitudinally inwardly from the respective end wall panel and such that each rear locking flap is positioned between the respective first and second top wall panel forming the double-walled top wall, two front set of corner panels, each front set of corner panels located at a respective front corner of the bottom panel and interconnecting a respective end of the front wall panel with a respective end of the respective end wall panel, wherein each front set of corner panels comprises an inclined fold line extending along a virtual line extending diagonally away from the respective front corner of the bottom panel, wherein each front set of corner panels is foldable along the inclined fold line relative to the front wall panel, to the respective end wall panel and to each other about the inclined fold line into triangular flaps into an interior of the package and alongside the respective end wall panel as the blank is erected into the package, two front locking flaps, each front locking flap being foldably connected to an outwardly facing longitudinally or transversally extending side of the respective front set of corner panels and extending away from the respective front set of corner panels such that the front locking flap, as the blank is erected into the package, extends longitudinally inwardly from the respective end wall panel and such that each front locking flap is positioned between the respective first and second top wall panel forming the double-walled top wall two front locking tongues formed on the front wall panel or formed on a front top wall panel foldably connected to the front wall panel-along a longitudinally extending side of the front wall panel, opposite the bottom panel, wherein the two front locking tongues extends transversally from the front wall panel and from a longitudinally extending side of the front wall panel being opposite the bottom panel such that each front locking tongue, as the blank is erected into the package, extends transversally inwardly from the front wall panel or wherein the two front locking tongues extends transversally from the front top panel and from a longitudinally extending side of the front top panel being opposite the front wall panel such that each front locking tongue, as the blank is erected into the package, extends transversally inwardly from the front top panel, and such that each front locking tongue is positioned between the respective first and second top wall panel forming the double-walled top wall, wherein respective second top wall panel comprises at least one locking tongue being positioned along a transversally extending side of the respective second top wall panel, opposite the first top wall panel, and extending away from the second top wall panel along the longitudinal direction, and wherein at least one locking recess is formed in the respective end wall panel or in a fold line between the respective end wall panel and the respective first top wall panel, wherein the at least one locking tongue on the respective second top wall panel is/are configured to be inserted into the respective locking recess when the first and second top wall panels are folded to form the double-walled top wall and thereby lock the double-walled top wall in the erected state.

2. The blank according to claim 1, wherein each rear locking flap is foldably connected to the respective rear set of corner panels along a respective transversally extending side of the respective rear set of corner panels and extending away from the respective rear set of corner panels along the longitudinal direction.

3. The blank according to claim 1, the blank further comprising: a lid panel foldably connected to the rear wall panel along a longitudinally extending side of the rear wall panel, opposite the bottom panel, wherein the lid panel is configured to, in an erected state of the blank, abut the respective first top wall panel forming the upper surface of the double-walled top wall.

4. The blank according to claim 3, wherein the lid panel is configured to, in the erected state of the blank, abut the respective first top wall panel forming the upper surface of the double-walled top wall, wherein the respective rear locking flap and the lid panel have overlapping projections in a plane parallel to the lid panel.

5. The blank according to claim 3, wherein the blank further comprises: a lid front panel being foldably connected to the lid panel along a longitudinally extending side of the lid panel, opposite the rear wall panel, wherein the lid front panel is configured to, in an erected state of the blank, abut an outside surface of the front wall panel.

6. The blank according to claim 3, wherein the blank further comprises: two opposing lid end wall panels foldably connected to a respective one of two opposing transversally extending sides of the lid panel, wherein the respective lid end wall panel is configured to, in the erected state of the blank, abut an outside surface of the respective end wall panel.

7. The blank according to claim 2, wherein each rear locking flap is foldably connected to the respective rear set of corner panels along a respective fold line, the fold line being angled an angle ? relative to a transversal direction such that a longitudinal distance between the fold line and a transversally extending center line of the rear wall panel decreases with an increasing transversal distance from the respective end wall panel, the angle ? being about 2-7 degrees.

8. The blank according to claim 1, wherein each rear set of corner panels is foldably connected to the rear wall panel along respective a fold line, the fold line being angled an angle ? relative to a transversal direction such that a longitudinal distance between the fold line and a transversally extending center line of the rear wall panel decreases with an increasing transversal distance from the bottom panel, the angle ? being about 2-7 degrees.

9. The blank according to claim 1, wherein the blank further comprises a double fold line between the first top wall panel and the second top wall panel, the double fold line comprising a first fold line positioned closest to the first top wall panel and a second fold line, the first and second fold line defining an intermediate panel.

10. The blank according to claim 1, wherein the blank is made of paper-based material.

11. A package-formed from the blank according to claim 1, wherein the bottom panel forms a bottom of the package, the rear wall panel is folded in relation to the first longitudinally extending side of the bottom panel such that the rear wall panel forms a rear wall of the package, the front wall panel is folded in relation to the second longitudinally extending side of the bottom panel such that the front wall panel forms a front wall of the package, the two rear sets of corner panels folded along the inclined fold line relative to the rear wall panel, to the respective end wall panel and to each other about the inclined fold line into triangular flaps into an interior of the package and alongside the respective end wall panel, the two opposing end wall panels are folded in relation to the two opposing transversally extending sides of the bottom panel such that the end wall panels form two opposing end walls, the two rear locking flaps folded in relation to a respective outwardly facing longitudinally or transversally extending side of the respective rear set of corner panels such that the respective rear locking flap extends longitudinally inwardly from the respective end wall panel, the two front set of corner panels folded along the inclined fold line relative to the front wall panel, to the respective end wall panel and to each other about the inclined fold line into triangular flaps into an interior of the package and alongside the respective end wall panel, the two front locking flaps are folded in relation to a respective outwardly facing longitudinally or transversally extending side of the respective front set of corner panels such that the front locking flap extends longitudinally inwardly from the respective end wall panel, the two front locking tongues or the optional front top wall panel folded relative to the front wall panel-such that the two front locking tongues extends transversally inwardly from front wall panel or extends transversally inwardly the front top panel, the respective first and second top wall panels folded relative to each other and relative to the respective end wall panel to form the double-walled top wall, with the respective rear locking flap, the respective front locking flap, and the respective front locking tongue inserted between the respective first and second top wall panel, and wherein the double-walled top wall is locked in the erected state by the at least one locking tongue on the respective second top wall panel being inserted into the respective locking recess when the first and second top wall panels are folded to form the double-walled top wall.

12. The package according to claim 11, wherein the rear wall forms a right angle to the bottom panel.

13. The package according to claim 11, wherein the front wall forms a right angle to the bottom panel and the rear wall and the front wall extend along parallel planes.

14. The package according to claim 11, wherein the respective end wall forms a right angle to the bottom panel and wherein the respective rear set of corner panels and the respective end wall extend along parallel planes.

15. The package according to claim 11, wherein the two rear locking flaps are folded in relation to a respective outwardly facing transversally extending side.

16. The package according to claim 11, wherein the two front locking flaps are folded in relation to a respective outwardly facing transversally extending side.

17. The package according to claim 11, wherein the respective double-walled top wall forms a right angle to the respective end wall.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0104] The above, as well as additional objects, features and advantages of the present invention, will be better understood through the following illustrative and non-limiting detailed description of preferred embodiments of the present invention, with reference to the appended drawings, where the same reference numerals will be used for similar elements, wherein:

[0105] FIG. 1 discloses a blank configured to form a package.

[0106] FIGS. 2A-E discloses different stages of how the blank of FIG. 1 being erected into a package.

[0107] FIG. 3 discloses a package of FIG. 2 with a lid being open.

DESCRIPTION OF EMBODIMENTS

[0108] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be constructed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and fully convey the scope of the invention to the skilled person.

[0109] FIG. 1 shows a blank 1 as seen in a flat-laid state. The blank 1 is configured to form a package 100 as shown in FIG. 3. FIGS. 2A-E show different stages of how the blank 1 of FIG. 1 is erected into the package 100 of FIG. 3.

[0110] The blank comprises a bottom panel 10, a rear wall panel 21, a front wall panel 22 and two opposing end wall panels 31, 32. The rear wall panel 21 is foldably connected to a first longitudinally extending side LSBP1 of the bottom panel 10. The front wall panel 22 is foldably connected to a second longitudinally extending side LSBP2 of the bottom panel 10. The second longitudinally extending side LSBP2 of the bottom panel 10 is opposite the first longitudinally extending side LSBP1 of the bottom panel 10. The two opposing end wall panels 31, 32 are foldably connected to a respective one of two opposing transversally extending sides TSBP1, TSBP2 of the bottom panel 10.

[0111] The blank 1 further comprises two opposing sets of top wall panels 40. The two opposing sets of top wall panes 40 are foldably connected to a respective one of the two end wall panels 31, 32 along transversally extending sides TSEP1, TSEP2 of the respective end wall panel 31, 32, opposite the bottom panel 10. Each set of top wall panels 40 comprises a first top wall panel 41 and a second top wall panel 42. The first and second top wall panel 41, 42 are foldably connected to each other and arranged one after the other as seen along a longitudinal direction L. Each set of top wall panels 40 is configured to form a double-walled top wall 140, when the blank 1 is erected to form the package 100, as best illustrated in FIGS. 2E and 3. The first top wall panel 41 is connected to the respective end wall panel 31, 32. The first top wall panel 41 is configured to form an upper surface of the double-walled top wall 140. The respective second top wall panel 42 is connected to the respective first top wall panel 41. The second top wall panel 42 is configured to form an inside surface of the double-walled top wall 140, when the blank 1 is erected to form the package 100.

[0112] The respective second top wall panel 42 may comprise at least one locking tongue 45. The at least one locking tongue 45 may be positioned along a transversally extending side of the respective second top wall panel 42, opposite the first top wall panel 41. The at least one locking tongue 45 may extend away from the second top wall panel 42 along the longitudinal direction L.

[0113] The blank 1 may further comprises at least one locking recess 46. The at least one locking recess 46 may be formed in the respective end wall panel 31, 32. The at least one locking recess 46 may be formed in a fold line 44 between the respective end wall panel 31, 32 and the respective first top wall panel 41. As best illustrated in FIG. 2E, the at least one locking tongue 45 on the respective second top wall panel 42 is/are configured to be inserted into the respective locking recess 46 when the first and second top wall panels 41, 42 are folded to form the double-walled top wall 140. Thereby, the at least one locking tongue 45 and the at least one locking recess 46 may lock the double-walled top wall 140 in the erected state.

[0114] The blank 1 may further comprises a double fold line between the first top wall panel 41 and the second top wall panel 42. The double fold line may comprise a first fold line 47 and a second fold line 48. The first fold line 47 may be positioned closest to the first top wall panel 41. The first and second fold line 47, 48 may define an intermediate panel 49. Preferably, the intermediate panel 49 has a longitudinal extension, as seen in the flat-laid state, which is equal to or slightly greater than, preferably equal to, a thickness of the respective rear locking flap 55. Thereby, the respective rear locking flap 55 may fit between the first and second top wall panels 31, 32 when inserted between the first and second top wall panels 31, 32.

[0115] The blank 1 further comprises two rear sets of corner panels 50. Each rear set of corner panels 50 is located at a respective rear corner of the bottom panel 10. Each rear set of corner panels 50 is interconnecting a respective end of the rear wall panel 21 with a respective end of the respective end wall panel 31, 32. Each rear set of corner panels 50 may be foldably connected to the rear wall panel 21 along a respective fold line 57. The fold line 57 may be angled an angle ? relative to the transversal direction T. Thereby, a longitudinal distance between the fold line 57 and a transversally extending center line of the rear wall panel TCLR decreases with increasing transversal distance from the bottom panel 10. Preferably, the angle ? is between 0-10 degrees. Each rear set of corner panels 50 may be foldably connected to the respective end wall panel 31, 32 along a respective fold line 58. Each rear set of corner panels 50 comprises an inclined fold line 51 which extends along a virtual line extending diagonally away from the respective rear corner of the bottom panel 10. As illustrated in FIG. 1, the respective rear set of corner panels 50 may comprise a cut-out 50c in the outermost corner portion of the rear set of corner panels 50. The cut-out 50c is positioned such that it crosses the imaginary extension of the fold line 51. Preferably the cut-out 50c is bisected by the imaginary extension of the fold line 51. The cut-out 50c shortens the length of the upwardly facing edge of the corner panels 50 that extends from the corner and inwardly along the respective end wall panel 31, 32. This in turn provides space for a transversal extension of the locking tongue 45 and locking recess 46. The blank 1 further comprises two rear locking flaps 55. Each rear locking flap 55 is foldably connected to an outwardly facing longitudinally or transversally extending side of the respective rear set of corner panels 50 and extending away from the respective rear set of corner panels 50. Preferably, each rear locking flap 55 is foldably connected a respective transversally extending side of the respective rear set of corner panels 50 and extending away from the respective rear set of corner panels 50 along the longitudinal direction L. Each rear locking flap 55 may be foldably connected to the respective rear set of corner panels 50 along a respective fold line 56. The fold line 56 may be angled an angle ? relative to a transversal direction T. Thereby, a longitudinal distance between the fold line 56 and a transversally extending center line of the rear wall panel decreases with increasing transversal distance from the respective end wall panel 31, 32. Preferably, the angle ? is between 0-10 degrees.

[0116] As best illustrated in FIG. 2A, when the blank 1 is erected to form the package 100, the rear wall panel 21 may be folded in relation to the first longitudinally extending side LSBP1 of the bottom panel 10 thereby forming a rear wall 121 of the package 100. Preferably, the rear wall 121 forms a right angle to the bottom panel 10.

[0117] The front wall panel 22 may be folded in relation to the second longitudinally extending side LSBP2 of the bottom panel 10 thereby forming a front wall 122 of the package 100. Preferably, the front wall 122 forms a right angle to the bottom panel 10. Preferably, the rear wall 121 and the front wall 122 are arranged along parallel planes.

[0118] As best illustrated in FIGS. 2A and 2B, when the blank 1 is erected to form the package 100, the respective end wall panel 31, 32 may be folded in relation to the respective transversally extending side TSBP1, TSBP2 of the bottom panel 10 thereby forming a respective end wall 131, 132 of the package 100. Preferably, the respective end wall 131, 132 forms a right angle to the bottom panel 10. Preferably, the respective end wall 131, 132 forms a right angle to the rear wall 121 and the front wall 122.

[0119] Moreover, each rear set of corner panels 50 is foldable along the inclined fold line 51 relative to the rear wall panel 21, to the respective end wall panel 31, 32 and to each other about the inclined fold line 51 into triangular flaps 155. Each triangular flap 155, formed from the respective rear set of corner panels 50, are folded into an interior of the package 100 and alongside the respective end wall panel 31, 32, when the blank 1 is erected into the package 100, as best illustrated in FIGS. 2A-E and 3. As the blank 1 is erected into the package 100, and the respective rear set of corner panels 50 are folded as previously discussed, the respective rear locking flap 55 extends longitudinally inwardly from the respective end wall panel 31, 32. Thereby, each rear locking flap 55 is positioned such that when the first top wall panel 41 is folded relative to the respective end wall panel 31, 32 and the second top wall panel 42 is folded relative to the first top wall panel 41, the respective rear locking flap 55 becomes positioned between the respective first and second top wall panel 41, 42 forming the double-walled top wall 140. The outer free edge of the second top wall panel 42 may in this folding operation interact with the corner panels 50, and especially along the edge formed by the internal fold line 51, such that the corner panels 50 and thus also the locking flaps 55 are guided towards their intended position while the person erecting folding the blank folds the first and second top wall panels 41, 42.

[0120] The blank 1 further comprises a lid panel 70. The lid panel 70 is foldably connected to the rear wall panel 21 along a longitudinally extending side LSRP of the rear wall panel 21, opposite the bottom panel 10. The blank 1 further comprises a lid front panel 73. The lid front panel 73 is foldably connected to the lid panel 70 along a longitudinally extending side LSLP of the lid panel 70, opposite the rear wall panel 21. The blank 1 further comprises two opposing lid end wall panels 71, 72. The two opposing lid end wall panels 71, 72 are foldably connected to a respective one of two opposing transversally extending sides TSLP1, TSLP2 of the lid panel 70. Preferably, the lid panel 70, the lid front panel 73 and the two opposing lid end wall panels 71, 72 form a lid 170 of the package 100. However, it should be noted that the lid may be design in different ways although not illustrated.

[0121] As best understood from FIG. 3, as the blank 1 is erected to form the package 100 and the package 100 comprises the lid 170 as discussed above, the lid panel 70 is configured to be folded relative to the rear wall panel 21 such that the inside surface of the lid panel 70 abuts the respective first top wall panel 41 forming the upper surface of the double-walled top wall 140. Preferably, as the lid panel 70 is abutting the respective first top wall panel 41 forming the upper surface of the double-walled top wall 140, the respective rear locking flap 55 and the lid panel 70 have overlapping projections in a plane parallel to the lid panel 70. The lid front panel 73 is configured to abut an outside surface of the front wall panel 22. The respective lid end wall panel 71, 72 is configured to abut an outside surface of the respective end wall panel 31, 32.

[0122] The lid front panel 73 may comprise a first lid front sub-panel 73a and a second lid front sub-panel 73b. The first and second lid front sub-panels 73a, 73b may be configured to form a double-walled lid front 173 when the blank 1 is erected to form the package 100. The first lid front sub-panel 73a is connected to the lid panel 70 and is configured to form an outside surface of the double-walled lid front 173. The second lid front sub-panel 73b is connected to the first lid front sub-panel 73a and is configured to form an inside surface of the double-walled lid front 173.

[0123] The blank may further comprise two lid locking flaps 75 being foldably connected to an outwardly facing longitudinally extending side of the respective lid end wall panel 71, 72. The respective lid locking flap 75 may extend away from the respective lid end wall panel 71, 72 along the transversal direction T. Each lid locking flap 75, as the blank 1 is erected to form the package 100, may be positioned between the respective first and second lid front sub-panel 73a, 73b forming the double-walled lid front 173. Thereby, a locking of the lid 170, as the blank 1 is erected to form the package 100, is facilitated.

[0124] The lid front panel 73 may comprise at least two opposing lid tongues 74 being positioned along two opposing transversally extending sides of the second lid front sub-panel 73b and extending away from the second lid front sub-panel 73b along the longitudinal direction L. The blank 1 may further comprise at least one lid locking recess 76 formed in the respective lid end wall panel 71, 72 or in a fold line between the respective lid end wall panel 71, 72 and the respective lid locking flap 75. The at least two opposing lid tongues 74 may be configured to be inserted into the respective lid recess 76 when the lid end wall panels 71, 72 and lid front panel 73 being configured to be folded into the lid 170 and thereby lock the lid 170 in the erected state. Respective lid locking tongue 74 being configured to be removably insertable into respective lid locking recess 76 when the blank 1 is erected to form the package 100. With the disclosed design, as the blank 1 has been erected to form the package 100, the package 100, and especially the lid 170 of the package 100, may be kept in place. This facilitates provision of a stable lid 170 when the blank 1 is erected to form the package 100. This facilitates provision of keeping the package 100, and especially the lid 170 of the package 100, in the erected state without the use of any adhesive or similar means, or at least with a minimum use of such adhesive or similar means.

[0125] The blank 1 may further comprise two front set of corner panels 60. Each front set of corner panels 60 may be located at a respective front corner of the bottom panel 10. Each front set of corner panels 60 may be interconnecting a respective end of the front wall panel 22 with a respective end of the respective end wall panel 31, 32. Each front set of corner panels 60 may comprise an inclined fold line 61. The inclined fold line 61 may extend along a virtual line which extends diagonally away from the respective front corner of the bottom panel 10. Each front set of corner panels 60 may be foldable along the inclined fold line 61 relative to the front wall panel 22, to the respective end wall panel 31, 32 and to each other about the inclined fold line 61 into triangular flaps 155. Each triangular flap 155, formed from the respective front set of corner panels, are folded into an interior of the package 100 and alongside the respective end wall panel 31, 32 as the blank 1 is erected into the package 100, as best illustrated in FIGS. 2A-E and 3. Each front set of corner panels 50 may be foldably connected to the front wall panel 21 along a respective fold line 57. The fold line 57 may be angled an angle ? relative to a transversal direction T. Thereby, a longitudinal distance between the fold line 57 and a transversally extending center line of the front wall panel TCLF decreases with increasing transversal distance from the bottom panel 10. Preferably, the angle ? is between 0-10 degrees.

[0126] The blank may further comprise two front locking flaps 65. Each front locking flap 65 may be foldably connected to an outwardly facing longitudinally or transversally extending side of the respective front set of corner panels 60. Each front locking flap may extend away from the respective front set of corner panels 60. Preferably, each front locking flap 65 is foldably connected to the transversally extending side of the respective front set of corner panels 60 such that each front locking flap may extend away from the respective front set of corner panels 60 along the longitudinal direction L. Each front locking flap may extend longitudinally inwardly from the respective end wall panel 31, 32 and such that each front locking flap 65 may be positioned between the respective first and second top wall panel 41, 42 forming the double-walled top wall 140. Each front locking flap 55 may be foldably connected to the respective front set of corner panels 50 along a respective fold line 56. The fold line 56 may be angled an angle ? relative to a transversal direction T. Thereby, a longitudinal distance between the fold line 56 and a transversally extending center line TCLF of the front wall panel decreases with increasing transversal distance from the respective end wall panel 31, 32. Preferably, the angle ? is between 0-10 degrees.

[0127] The blank 1 further comprises a front top wall panel 80. The front top wall panel 80 may be foldably connected to the front wall panel 22 along a longitudinally extending side LSFP of the front wall panel 22, opposite the bottom panel 10. The front top panel 80 may comprise two front locking tongues 85. The two front locking tongues 85 may extend transversally from the front top panel 80 and from a longitudinally extending side of the front top panel 80 being opposite the front wall panel 22. As best illustrated in FIG. 2D, each front locking tongue 85, as the blank 1 is erected into the package 100, extends transversally inwardly from the front top panel 80. Each front locking tongue 85 may be positioned between the respective first and second top wall panel 41, 42 forming the double-walled top wall 140.

[0128] The blank 1 is preferably made of paper-based material.

[0129] Additionally, variations to the disclosed embodiments can be understood and effected by the skilled person in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word comprising does not exclude other elements or steps, and the indefinite article a or an does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measured cannot be used to advantage.

[0130] The person skilled in the art realize that the present invention by no means is limited to the preferred embodiments described above. On the contrary, many modifications and variations are possible within the scope of the appended claims.