EP4119464A1

EP4119464A1 - Package for holding one or more food items

Info

Publication number: EP4119464A1
Application number: EP21217861.0A
Authority: EP
Inventors: Olaf Alexander DOLFIN; Petrus Hendrikus POT
Original assignee: Bliston Packaging BV
Current assignee: Bliston Packaging BV
Priority date: 2021-07-13
Filing date: 2021-12-27
Publication date: 2023-01-18

Abstract

The invention relates to a package (1) for holding one or more food items, wherein the package (1) comprises: a cardboard tray (2) having a tray base and a circumferential tray wall standing up from the tray base; and a plastic lid (3) configured for being placed on the cardboard tray, wherein the plastic lid comprises a lid top and a circumferential lid wall extending from the lid top towards the tray base, wherein the circumferential lid wall is located at least partially outside the circumferential tray wall, wherein the cardboard tray (2) and the plastic lid (3) together define a food space for holding one or more food items, wherein the circumferential tray wall, at the side facing away from the food space, is provided with a securing recess (42), and wherein the circumferential lid wall, at the side facing towards the food space, is provided with a securing projection (46), or vice versa, wherein the securing recess (42) and the securing projection (46) are configured to cooperate for securing the tray (2) and the lid (3) with respect to each other.

Description

BACKGROUND

The invention relates to a package for holding one or more food items, such as sushi items.
In recent years, the popularity of sushi has increased enormously and is still increasing. Lots of sushi shops are opened in order to meet the increasing demand for sushi, which sushi shops often offer the opportunity to take-out sushi or to have it delivered at home. In order to take-out or to deliver sushi, the sushi is usually packed into a known package for holding sushi. The known package comprises a tray and a lid, wherein the lid is configured for being placed on top of the tray. The tray and the lid together enclose a food space in which the sushi items may be stored temporarily. The tray has a tray base and a circumferential tray wall standing up from the tray base, wherein the lid comprises a lid top and a circumferential lid wall extending from the lid top towards the tray base. The upper edge of the circumferential tray wall is provided with a male or female clicking portion configured for clicking to a male or female clicking portion at the lower edge of the circumferential lid wall. Usually, the sushi items are placed within the tray, whereafter the lid is placed on top of the tray and the tray and the lid are clicked to each other in order to shield the sushi items during displaying and/or transport thereof.

SUMMARY OF THE INVENTION

A disadvantage of the known package for sushi items is that the lid may get loose from the tray when the weight of the sushi items within the package is too high, since the clicking portion of the tray may click out of the clicking portion of the lid due to the weight of the sushi items. This usually happens when someone grabs the package by the lid in order to move the package to another position. As a result, the tray with the sushi items will fall onto the floor and the sushi items will fall apart due to the impact from falling onto the floor.
It is an object of the present invention to ameliorate or to eliminate one or more disadvantages of the known package, to provide an improved package or to at least provide an alternative package.
According to a first aspect, the invention provides a package for holding one or more food items, wherein the package comprises:

a cardboard tray having a tray base and a circumferential tray wall standing up from the tray base; and
a plastic lid configured for being placed on the cardboard tray, wherein the plastic lid comprises a lid top and a circumferential lid wall extending from the lid top towards the tray base, wherein the circumferential lid wall is located at least partially outside the circumferential tray wall,
wherein the tray and the lid together define a food space for holding one or more food items,
wherein the circumferential tray wall, at the side facing away from the food space, is provided with a securing recess, and wherein the circumferential lid wall, at the side facing towards the food space, is provided with a securing projection, or vice versa, wherein the securing recess and the securing projection are configured to cooperate for securing the tray and the lid with respect to each other.

During use, the cardboard tray is filled with one or more food items, such as sushi items, for example maki, temaki, uramaki, sashimi, and/or nigiri. When the cardboard tray is filled with the sushi items, the plastic lid is placed on top of the tray in a placing direction substantially perpendicular to the tray base of the base, and substantially parallel to the circumferential tray wall and the circumferential lid wall. When removing the lid from the tray, the lid is moved in the removing direction that is opposite to the placing direction. The securing recess and the securing projection cooperate for securing the tray and the lid with respect to each other, and due to the securing recess and the securing projection being arranged at the circumferential tray wall and the circumferential lid wall, the act of securing the tray and the lid with respect to each other is performed in a direction substantially perpendicular or transverse to the placing direction and to the removing direction. The inventors have surprisingly found that the securing direction of the first and second securing parts being substantially perpendicular to the placing direction and the removing direction of the lid enables the package to carry more weight, when lifted by the lid, in comparison to the package according to the prior art. Thus, the package according to the invention reduces or in the ideal case eliminates the risk of the lid being released from the tray unintentionally, when the package is lifted by the lid.
Furthermore, due to the tray being made of cardboard, into which the securing recess is provided, the securing recess is maintained substantially stationary during placing the plastic lid onto the cardboard tray. This results in a reliable securing of the plastic lid to the cardboard tray. Thus, the securing recess and the securing projection enable a person filling the package or reclosing the package to secure the lid to the tray by placing the lid on top of the tray and pushing the lid slightly downwards, such that the securing projection is received within the securing recess. Therefore, the lid may be secured to the tray in a relatively short time period. Since the package may be used in sushi shops, which tend to be quite busy during peak hours, the package advantageously enables a user to secure the lid to the tray relatively fast and/or relatively easily.
In an embodiment, the cardboard tray is manufactured from at least 500 grams cardboard. Using 500 grams results in a robust cardboard tray, of which the securing recess remains in place when placing the plastic lid onto the cardboard tray, thereby securing the plastic lid to the cardboard tray.
In a further embodiment, the securing projection is a triangular securing projection having a downward facing abutting surface and an upward facing abutting surface. The downward facing abutting surface of the triangular securing projections abuts against the upper edge of the circumferential tray wall, when the lid is placed on top of the tray. Upon abutting against the upper edge, the downward facing abutting surface forces the circumferential lid wall to move slightly outwards, therewith advantageously enabling the securing projection to move into the securing recess. When the lid is removed from the tray, the upward facing abutting surface abuts against the upper edge of the securing recess, therewith forcing the circumferential lid wall slightly outwards such that the securing projection may be released from the securing recess when desired.
It is noted that the stiffness of the material of the lid may determine the weight that the package may hold without the tray being released from the lid unintentionally, when the package is lifted by the lid. The stiffer the material, the more force is needed for securing or releasing the tray and the lid to or from each other.
In an embodiment, the tray is substantially quadrangular shaped, and the circumferential tray wall has a first tray wall portion, a second tray wall portion, opposite to the first tray wall portion, a third tray wall portion, transverse to the first and second tray wall portions, and a fourth tray wall portion, opposite of the third tray wall portion and transverse to the first and second tray wall portions. In an embodiment thereof, the circumferential tray wall comprises two or more securing recesses. In particular, the two or more securing recesses are provided at the first tray wall portion and at the second tray wall portion. By providing securing parts at opposite wall portions of the circumferential tray wall, and therewith at opposite wall portions of the circumferential lid wall, the risk of the tray hinging with respect to and/or being released from the lid, when lifted by the lid, is reduced or in the ideal case prevented.
In an embodiment, at least each of the first tray wall portion and the second tray wall portion are provided by folding a layer of cardboard, such that double-layered wall portions are formed, wherein the two or more securing recesses are provided in one layer, preferably the outer one, of the double-layered wall portion(s). According to this embodiment, the first and second tray wall portions are formed by folding a layer of cardboard, thereby forming first and second tray wall portions having an inner and outer layer of cardboard. In particular the securing recesses are provided within the outer layer of the double-layered wall portions of the first and second tray wall portions, wherein the securing recesses extend completely through the outer layer such that the securing recesses are deep enough to receive securing projections. Since the securing recesses are provided only within the outer layer, the inner layer of the double-layered wall portions are enabled for preventing, for example, air from flowing through the securing recesses into the food space, or vice versa. The inner layer of the double-layered wall portions thereby functions as a barrier for preventing accessing the food space via the securing recesses. Therefore, an advantage of this embodiment is that reliable securing is achieved by the securing recesses and that access to the food space via the securing recesses is prevented.
In an embodiment, the cardboard of the cardboard tray is manufactured from a number of cardboard-sublayers, preferably wherein the cardboard comprises in series a cardboard-sublayer of virgin cardboard, a cardboard-sublayer of recycled cardboard, and a cardboard-sublayer of virgin cardboard. Preferably the cardboard comprises in series 15% virgin cardboard, 70% recycled cardboard, and 15% virgin cardboard. Preferably the inner surface of the cardboard tray is coated with a protecting layer, such as a polyethylene (PE) layer. The package is intended for carrying food items, which may be moist or from which fluid may be leaking. It is known that wetting of cardboard results in weakening and, optionally, tearing of the cardboard. By providing a protecting layer at the inner surface of the cardboard tray, any fluid from the food items within the package is prevented from wetting the cardboard tray. This is advantageous, since it prevents the cardboard tray from tearing during transport, while food items are placed therein.
In an embodiment, the tray comprises one or more support legs provided at the bottom side thereof and configured for supporting the package. In an embodiment thereof, the tray is substantially quadrangular shaped, and the support legs are provided at or near the corners of the tray base. The support legs may prevent the tray base from coming into contact, for example, with a table top, such that the tray base, in particular the bottom side thereof, is prevented from being placed into filth laying on the table top. This is advantageous, as it may prevent a customer of a sushi shop, for example, from making a table cloth dirty with filth sticking at the bottom of the package.
In a further embodiment, the lid top of the lid comprises one or more indentations configured for receiving the one or more support legs. In particular, the indentations are provided at the corners of the lid top. The indentations being configured for receiving the one or more support legs, for example, enables an employee of a sushi shop to stack multiple packages on top of each other in an efficient manner. As a result, the amount of space needed for stacking multiple packages is kept to a minimum. This is advantageous, as it allows a user of the packages to have more filled packages in stock and/or as less space is required for stocking filled packages.
In an embodiment, the package is quadrangular shaped, wherein the circumferential lid wall has a number of corners, wherein each of the corners is rounded at the inner circumference of the circumferential lid wall. Because of the rounded corners, the person placing the lid on top of the tray may place the lid loosely on the tray without the need to search for a position in which the corners of the circumferential tray wall and of the circumferential lid wall are exactly aligned with each other. After placing the lid loosely on the tray, the lid may be pushed slightly downwards to secure the lid to the tray. An advantage of this embodiment, therefore, is that the lid may be secured to the tray in a fast and easy manner.
In an embodiment, the circumferential lid wall comprises a first lid wall portion, a second lid wall portion opposite to the first lid wall portion, a third lid wall portion, transverse to the first and second lid wall portions, and a fourth lid wall portion, opposite to the third lid wall portion and transverse to the first and second lid wall portions. In particular, the circumferential lid wall has rounded corners where the first lid wall portion or the second lid wall portion meets the third lid wall portion and/or the fourth lid wall portion.
In an embodiment, the circumferential lid wall, in the direction from the lid top to the tray base, has a first wall part that merges into a second wall part that has larger outer dimensions than the first wall part, wherein the outer contour of the first wall part falls within the outer contour of the upper edge of the circumferential tray wall, and the outer contour of the second wall part falls outside the outer contour of the upper edge of the circumferential tray wall. During use, the second wall part surrounds the circumferential tray wall of the tray partially and the first wall part is located above the tray. As the lid is a one-piece part, there is a material bridge present between the first wall part and the second wall part, which material bridge may be extending substantially parallel to the tray base. The lid, thus, has a stepped outer surface. During securing the lid to the tray, the material bridge may abut against the upper edge of the circumferential tray wall such that the material bridge advantageously prevents the lid from being pushed too far downwards. It, therewith, is prevented that the sushi items within the package are crushed by placing the lid on the tray.
In an embodiment, the second wall part comprises a straight portion connected to the first wall part and substantially perpendicular to the lid top, and a flange portion arranged at the straight portion at the end thereof facing away from the lid top and being at an angle with respect to the lid top. According to this embodiment, the flange portion of the second wall part of the lid is also at an angle with respect to the circumferential tray wall and to the straight portion. In particular, the flange portion may be orientated downwards from the straight portion and extending outwardly. When placing the lid on top of the tray, the lid approaches the tray from above. During approaching the tray, the flange portion may be the first portion of the lid that comes into contact with the tray, in particular the upper edge of the circumferential tray wall thereof. Due to the downward orientation of the flange portion, the flange portion may guide the upper edge of the circumferential tray wall such that the tray ends in a position in which the lid may be secured to the tray.
In an embodiment, the tray broadens in a direction from the tray base to the lid top. According to this embodiment, the width of the tray at the height of the upper edge of the circumferential tray wall is larger than the width of the tray at the height of the tray base. The inventors have surprisingly found that the broadening tray results in that the lid may be positioned correctly to the tray relatively easily, as the upper edge of the circumferential tray wall guides the lid to the position in which the lid and the tray may be secured to each other. This is advantageous, as the person placing the lid on the tray does not have to search for the correct position in which the lid may be secured to the tray.
In an embodiment, the lid comprises clamping parts, such as clamping projections for clamping the lid with respect to the tray. Preferably the clamping parts substantially correspond to the second securing parts. The clamping parts are provided for clamping the lid with respect to the tray, therewith further reducing the risk of the lid being removed from the tray unintentionally.
In an embodiment, the lid comprises one or more grips configured for being gripped by a user. The one or more grips may advantageously prevent the lid from slipping out of a hand, such that it is prevented that the tray with the sushi items falls onto the ground.
The various aspects and features described and shown in the specification can be applied, individually, wherever possible. These individual aspects, in particular the aspects and features described in the attached dependent claims, can be made subject of divisional patent applications.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be elucidated on the basis of an exemplary embodiment shown in the attached drawings, in which:

Figure 1 shows an isometric view of a package for holding one or more food items according to an embodiment of the invention;
Figure 2 shows an exploded view of the package of figure 1;
Figure 3 shows a cross section of the package of figure 1;
Figure 4 shows a top view of the package of figure 1; and
Figure 5 shows a bottom view of a part of the package of figure 1.

DETAILED DESCRIPTION OF THE INVENTION

A package 1 for holding one or more food items, such as sushi items, according to an embodiment of the invention is shown in figure 1. The package 1 comprises a cardboard tray 2 and a plastic lid 3 placed on top of the tray 2. The lid 3 is placed on top of the tray 2 in the placing direction A. The tray 2 and the lid 3 together define a food space in which one or more sushi items may be placed, wherein the food space is also bounded by the tray 2 and the lid 3. The tray 2 has a substantially quadrangular, in particular rectangular outer contour when seen from above.
As best shown in figure 2, the cardboard tray 2 has a tray base 10, which is substantially rectangular shaped, and a circumferential tray wall 11 standing up from the tray base 10. The tray base 10 is provided with an elongated support leg 12 at each corner thereof such that the tray base 10, in particular the lower surface thereof, may be located at a distance, for example, from a table top to prevent the tray base 10, for example, from getting wet. The circumferential tray wall 11 comprises a first tray wall portion 13 and a second tray wall portion 14, opposite to the first tray wall portion 13, which are arranged at or near the longitudinal sides of the tray base 10. The circumferential tray wall 11 further comprises a third tray wall portion 15 and a fourth tray wall portion 16, opposite of the third tray wall portion 15 and transverse to the first and second tray wall portions 13, 14, which third and fourth tray wall portions 15, 16 are arranged at the transverse sides of the tray base 10. The tray base 10 and the circumferential tray wall 11 may be manufactured, for example, from at least 500 grams cardboard, and together define at least a part of the food space.
As best shown in figure 2, the plastic lid 3 is provided with a lid top 20 and a circumferential lid wall 21 extending downwards from the lid top 20 towards the tray base 10. The circumferential lid wall 21, when seen in the direction from the lid top 20 to the tray base 10, has a first wall part 22 that merges into a second wall part 23 that has larger outer dimensions than the first wall part 22. When seen from above, the outer contour of the first wall part 22 falls within the outer contour of the upper edge 17 of the circumferential tray wall 11, and the outer contour of the second wall part 23 falls outside the outer contour of the upper edge 17 of the circumferential tray wall 11. Each of the first and second wall parts 22, 23 is provided with a first lid wall portion 24, a second lid wall portion 25 opposite to the first lid wall portion 24, a third lid wall portion 26, transverse to the first and second lid wall portions 24, 25, and a fourth lid wall portion 27, opposite to the third lid wall portion 26 and transverse to the first and second lid wall portions 24, 25. The plastic lid 3 may be manufactured, for example, from PET (polyethylene terephthalate), PP (polypropylene) or OPS (biaxial oriented polystyrene).
The first wall part 22 comprises multiple grips 28 at the first, second, third and fourth lid wall portions 24, 25, 26, 27, wherein each grip 28 is formed by a corrugated portion of the first wall part 22. The grips 28 enable a user to grip the lid 3 in order to remove the lid from the tray 2. Furthermore, the first wall part 22 is provided with multiple stacking projections 29 at the first, second, third and fourth lid wall portions 24, 25, 26, 27, which stacking projections 29 are semi-cylindrical. The stacking projections 29 are configured for facilitating stacking multiple lids 3 on top of each other and/or denesting of multiple lids 3 stacked on top of each other, for example, by means of a not shown denesting device.
At each of the corners, the lid top 20 is provided with an indentation 30 having a first indentation portion 31, with an inward rounded shape, and a second indentation portion 32, with an elongated shape, extending along the first lid wall portion 24 or the second lid wall portion 25, respectively. The indentations 30, in particular the second indentation portion 32 thereof, are configured for receiving the support legs 12 of another package 1 such that the support legs 12 are received by the second indentation portions 32. As a result, packages 1 according to the invention are enabled to be stacked on top of each other, while preventing rotation of stacked packages with respect to each other.
As best shown in figure 2, the second wall part 23 comprises a straight portion 33 extending substantially transverse or transverse to the lid top 20, and a flange portion 34 arranged at the side of the straight portion 33 facing away from the lid top 20 and extending outwardly at an angle with respect to the straight portion 33.
During transport of the sushi items within the package 1, it is desired to maintain the package 1 closed such that the sushi items within the package 1 are shielded from the environment. In order to secure the tray 2 and the lid 3 with respect to each other, the tray 2 is provided with first securing parts 40 at the first tray wall portion 13 and the second tray wall portion 14, and the lid 3 is provided with second securing parts 41 at the first lid wall portion 24 and at the second lid wall portion 25. The second securing parts 41 are provided at the straight portion 33 of the second wall part 23.
As shown in figures 2 and 3, each of the securing parts 40 has a securing recess 42, also called a blind passage, such as a rectangular securing recess 42, which securing recess 42 is formed within the first and second tray wall portions 13, 14. Each of the securing recess 42 is configured for receiving one of the second securing parts 41. Each of the second securing parts 41 has a triangular inward projection 43 provided at the straight portion 33 of the second wall part 23 of the lid 2, which triangular inward projections 43 are situated such that they may enter the securing recesses 42 when the lid 3 is placed onto the tray 2. Each of the triangular inward projections 43 has a downward facing abutting surface 44 and an upward facing abutting surface 45, wherein the downward facing abutting surface 44 abuts against the upper edge 17 of the tray 2 when placing the lid 3 on the tray 2, and the upward facing abutting surface 45 abuts against the upper edge of the respective securing recess 42 when removing the lid 3 from the tray 2. The triangular inwards projections 43 are made integrally with the remaining of the lid 3, for example, by moulding the lid 3.
As shown in figure 2, the lid 3 is further provided with clamping projections 46 at the third lid wall portion 26 and the fourth lid wall portion 27, which clamping projections 46 are structured in accordance with the triangular inward projection 43 of the second securing part 41.
Furthermore, as best shown in figure 3, the tray 2 broadens towards the lid 3 such that the width of the tray 2 at the upper edge 17 is larger than the width of the tray at the tray base 10. This may be understood as that each of the first tray wall portion 13, the second tray wall portion 14, the third tray wall portion 15 and the fourth tray wall portion 16 are at an obtuse angle, i.e. an angle larger than 90°, with respect to the tray base 10.
As indicated in figure 4, the inner circumference of the straight portion 33 of the second wall part 33 has rounded corners 50 where the first lid wall portion 24 or the second lid wall portion 25 meets the third lid wall portion 26 or the fourth lid wall portion 27. The rounded corners 50 extend over substantially the whole height of the straight portion 33 and are configured for guiding the corners of the tray 2, in particular the circumferential tray wall 11, with respect to the lid 3 into a position in which the lid 3 may be easily secured to the tray 2. As best shown in figure 5, the corners 51 of the tray 2, in particular the circumferential tray wall 10 thereof, may be received within the rounded corners 50 easily such that the lid 3 on the tray 2 may be secured to each other without the need for searching for the right position to secure the lid 3 and the tray 2 to each other.
It is to be understood that the above description is included to illustrate the operation of the preferred embodiments and is not meant to limit the scope of the invention. From the above discussion, many variations will be apparent to one skilled in the art that would yet be encompassed by the scope of the present invention.

Claims

Package for holding one or more food items, wherein the package comprises:
a cardboard tray having a tray base and a circumferential tray wall standing up from the tray base; and

a plastic lid configured for being placed on the cardboard tray, wherein the plastic lid comprises a lid top and a circumferential lid wall extending from the lid top towards the tray base, wherein the circumferential lid wall is located at least partially outside the circumferential tray wall,

wherein the cardboard tray and the plastic lid together define a food space for holding one or more food items,

wherein the circumferential tray wall, at the side facing away from the food space, is provided with a securing recess, and wherein the circumferential lid wall, at the side facing towards the food space, is provided with a securing projection, or vice versa, wherein the securing recess and the securing projection are configured to cooperate for securing the tray and the lid with respect to each other.
Package according to claim 1, wherein the cardboard tray is manufactured from at least 500 grams cardboard.
Package according to claim 1 or 2, wherein the tray is substantially quadrangular shaped, and wherein the circumferential tray wall has a first tray wall portion, a second tray wall portion, opposite to the first tray wall portion, a third tray wall portion, transverse to the first and second tray wall portions, and a fourth tray wall portion, opposite of the third tray wall portion and transverse to the first and second tray wall portions.
Package according to any one of claims 1-3, wherein the circumferential tray wall comprises two or more securing recesses.
Package according to claim 4, wherein the two or more securing recesses are provided at the first tray wall portion and at the second tray wall portion.
Package according to claim 5, wherein at least each of the first tray wall portion and the second tray wall portion are provided by folding a layer of cardboard, such that double-layered wall portions are formed, wherein the two or more securing recesses are provided in one layer, preferably the outer one, of the double-layered wall portion(s).
Package according to any one of the preceding claims, wherein the cardboard of the cardboard tray is manufactured from a number of cardboard-sublayers, preferably wherein the cardboard comprises in series a cardboard-sublayer of virgin cardboard, a cardboard-sublayer of recycled cardboard, and a cardboard-sublayer of virgin cardboard, preferably wherein the cardboard comprises in series 15% virgin cardboard, 70% recycled cardboard, and 15% virgin cardboard, preferably wherein the inner surface of the cardboard tray is coated with a protecting layer, such as a polyethylene (PE) layer.
Package according to any one of the preceding claims, wherein the tray comprises one or more support legs provided at the bottom side thereof and configured for supporting the package.
Package according to claim 8, wherein the tray is substantially quadrangular shaped, and wherein the support legs are provided at or near the corners of the tray base.
Package according to claim 8 or claim 9, wherein the lid top of the lid comprises one or more indentations configured for receiving the one or more support legs, wherein the indentations are provided at the corners of the lid top.
Package according to any one of the preceding claims, wherein the package is quadrangular shaped, wherein the circumferential lid wall has a number of corners, wherein each of the corners is rounded at the inner circumference of the circumferential lid wall.
Package according to claim 11, wherein the circumferential lid wall comprises a first lid wall portion, a second lid wall portion opposite to the first lid wall portion, a third lid wall portion, transverse to the first and second lid wall portions, and a fourth lid wall portion, opposite to the third lid wall portion and transverse to the first and second lid wall portions, wherein the circumferential lid wall has rounded corners where the first lid wall portion or the second lid wall portion meets the third lid wall portion and/or the fourth lid wall portion.
Package according to any one of the preceding claims, wherein the circumferential lid wall, in the direction from the lid top to the tray base, has a first wall part that merges into a second wall part that has larger outer dimensions than the first wall part, wherein the outer contour of the first wall part falls within the outer contour of the upper edge of the circumferential tray wall, and the outer contour of the second wall part falls outside the outer contour of the upper edge of the circumferential tray wall.
Package according to claim 13, wherein the second wall part comprises a straight portion connected to the first wall part and substantially perpendicular to the lid top, and a flange portion arranged at the straight portion at the end thereof facing away from the lid top and being at an angle with respect to the lid top.
Package according to one of the preceding claims, wherein the tray broadens in a direction from the tray base to the lid top;
wherein the lid comprises clamping parts, such as clamping projections for clamping the lid with respect to the tray, preferably wherein the clamping parts substantially correspond to the second securing parts;

wherein the lid comprises one or more grips configured for being gripped by a user.
BT/HZ