IT202100009236A1 - DIE-CUT AND RELATIVE FOLDABLE CONTAINER - Google Patents

Description

DIE-CUT AND RELATIVE FOLDABLE CONTAINER

DESCRIPTION

The present invention relates to a collapsible container preferably made of cardboard or other suitable material and having a bottom and four straight walls, i.e. perpendicular to the bottom.

The invention also relates to a semi-finished blank intended to form, following folding and without the aid of glue or rivets, the aforesaid container and having a flattened shape and reduced bulk so that it can be easily stored and shipped.

Collapsible containers are typically formed from a collapsible sheet material, generally cardboard, suitably shaped and die-cut, i.e. provided with folding lines arranged so as to form a plurality on the blank of panels intended to form, after folding, the various faces of the container being formed.

A well-known type of blank comprises a central panel of quadrangular, square or rectangular shape, intended to become a bottom of the container and connected, at each of its four sides through corresponding first folding lines, to a rear panel, a front panel and side panels provided at facing edges of the central panel, also quadrangular in shape and intended to respectively form the front, rear and two side walls of the container being formed.

A defect of the foldable containers? related to stability? in the transport of any objects that can be inserted inside. During transport? in fact, it is possible that the objects present in the container are not particularly stable in the desired position and tend to move inside the container itself.

Another defect of the foldable containers? linked to the resistance characteristics of the container itself. Can? in fact, it may happen that said container is not able to support the weight of any objects inserted inside it, in particular in the case in which said objects are very heavy, such as for example bottles containing a liquid.

Another shortcoming of the known foldable containers? that the assembly operations are complicated and long.

Furthermore, the plan dimensions of the blanks of the foldable containers are large. A purpose of the invention? to provide a blank which overcomes the problems complained of with reference to the prior art cited.

A purpose of the invention? provide a blank that allows to obtain a container particularly suitable for the transport of any objects that can be inserted inside it, keeping them in the desired position.

Another purpose of the invention? that of supplying a die-cut that makes it possible to obtain a container that is particularly resistant.

A purpose of the invention? provide a blank that allows you to form a container quickly and easily.

An additional purpose? provide a collapsible container that can be easily and repeatedly assembled/disassembled without damaging the final shape or seal of the container.

These and other purposes are achieved by a blank having the characteristics of claim 1 and by a container made according to claim 12.

Through the die-cut object of the invention ? It is possible to assemble a container in a very short time and easily even by non-expert users, without using glues or rivets.

Furthermore, said blank has limited overall dimensions in plan and allows to limit the overall dimensions during transport and, at the same time, to limit any damage to the blank itself.

The characteristics and advantages of the invention will better emerge from the detailed description of a preferred embodiment thereof, illustrated by way of example and not in limitation with reference to the attached drawings in which:

Figure 1 ? a plan view of a blank according to the invention in a flattened configuration before folding;

Figures 2 to 4 show a folding sequence of the blank of figure 1 so as to obtain a relative container;

Figure 5 shows the container obtained from the blank and an example of objects that can be inserted inside it;

Figure 6 shows the container filled with the objects of Figure 5;

Figure 7 shows the container closed by a cover panel.

Figure 1 shows a blank 10 in a flattened configuration before folding. In a Cartesian reference system XYZ associated with the blank 10, said blank 10 advantageously lies in the horizontal plane XY. The blank 10 ? preferably obtained starting from a blank of sheet material such as cardboard or plastic material which is processed in suitable processing machines so as to produce the blank 10. Advantageously, the blank 10 is made of laminated cardboard or other flexible material, for example suitable plastic material. Preferably, the thickness of the laminated cardboard? between about 1mm and about 4mm. Advantageously, the cardboard ? of the single-layer corrugated or pi? wavy layers.

The blank 10 ? endowed with a plurality of agreed folding lines defining on the blank 10 itself a plurality? of panels suitable for being folded according to a sequence of successive foldings, as better explained below, so as to obtain a relative container 100, visible for example in Figure 4.

Advantageously, the blank 10 comprises a central panel 1, preferably of a rectangular or square shape, i.e. of a right quadrilateral having parallel opposite edges, which ? intended to form a container bottom 100. Advantageously, the central panel 1 has a length L along the longitudinal direction Y comprised between 300 and 550 mm. Advantageously, the central panel 1 has a width T along the transversal direction X of between 140 and 850 mm.

The blank 10 advantageously comprises two side panels 2, 3, connected respectively to the two opposite edges of the central panel 1 and intended to form two side walls of the container 100. Preferably, the blank 10 comprises a front panel 5 and a rear panel 4, connected to the other two opposite edges of the central panel 1 and intended to form respectively a front wall and a rear wall of said container 100. Advantageously, the rear panel 4, the front panel 5 and the side panels 2, 3 have a quadrangular shape, preferably rectangular.

Preferably, two edges of the central panel 1 extend parallel to the transversal direction X and the rear panel 4 and the front panel 5 are connected to these edges. Advantageously, the other two edges of the central panel 1 extend parallel to the longitudinal direction Y and to these edges side panels 2, 3 are connected.

Preferably, the rear panel 4, the front panel 5 and the side panels 2, 3 have height D which coincides with each other and corresponds to the height of the container being formed 100. Advantageously, the height D is between 70 and 140 mm. Preferably, the rear panel 4 and the front panel 5 have the same width along the transversal direction X. Advantageously, said width ? substantially equal to the width T of the central panel 1, even more? advantageously said width ? slightly smaller than the width T of the central panel 1. Preferably, the side panels 2, 3 have the same length along the longitudinal direction Y, substantially equal to the length L of the central panel 1.

Advantageously, the rear panel 4, the front panel 5 and the side panels 2, 3 are connected to the central panel 1 through corresponding first folding lines 22-25 so that they can be folded with respect to the latter, as it will be? better explained below. The intended fold lines 22-25 are perpendicular in pairs and extending parallel to the longitudinal Y direction or the transverse X direction.

Preferably, the front panel 5 and the rear panel 4 are provided with first lateral flaps 11-14, connected to the respective panel 4, 5 by means of third folding lines 26-29. Said third folding lines 26-29 are advantageously obtained along side edges of the front 5 and rear 4 panel, said side edges extending parallel to the longitudinal direction Y. Preferably, the first flaps 12, 14 connected to the front panel 5 have a development on substantially rectangular XY horizontal plane. Advantageously, the first flaps 11, 13 connected to the front panel 5 have a substantially trapezoidal development on the horizontal plane XY. These last flaps 11, 13 advantageously have a smaller transversal dimension than the first flaps 12, 14 connected to the front panel 5.

Preferably, each side panel 2, 3 ? provided with a second side flap 15, 16 connected to the corresponding side panel 2, 3 via second folding lines 41, 42. Said second folding lines 41, 42 are advantageously obtained along the side edges of the side panels 2, 3, called side edges extending parallel to the transverse direction X. The second flaps 15, 16 are preferably formed on the side edges of the side panels 2, 3 from the side of the rear panel 4.

Advantageously, each side panel 2, 3 ? provided with a support appendix 17, 18 connected to the corresponding side panel 2, 3 through fourth fold lines 31, 32. Said fourth fold lines 31, 32 are advantageously obtained along the outer edges of the side panels 2, 3, said outer edges extending parallel to the longitudinal direction Y. The support appendix 17, 18 ? preferably shaped like the side panel 2, 3, even more? preferably the support appendix 17, 18 has substantially the same shape and size as the side panel 2, 3, i.e. height substantially equal to the height D of the side panel 2, 3 and length substantially equal to the length L of the side panel 2, 3 Advantageously, the support appendix 17, 18 can have slightly smaller dimensions than the side panel 2, 3.

Advantageously, a support appendage 17 ? provided with a reinforcing panel 6 connected to said support appendix 17 via a fifth line of intended folding 43 provided on an edge of the supporting appendix 17 contiguous to said fourth intended line of folding 31. Preferably, said edge of the appendix support 17 extends parallel to the transverse direction X. Advantageously, the reinforcing panel 6 is shaped like the rear panel 4, even more? advantageously the reinforcing panel 6 has substantially the same shape and dimensions as the rear panel 4. Preferably, the reinforcing panel has a width R substantially equal to the height D of the rear panel 4 and a length K substantially equal to the width T of the rear panel 4 Advantageously, the reinforcing panel 6 can have slightly smaller dimensions than the rear panel 4.

Preferably, the reinforcing panel 6 comprises two side edges 94, 95 and an outer edge 96. Advantageously, the side edges 94, 95 extend parallel to the longitudinal direction Y and the outer edge 96 extends parallel to the transverse direction X.

Preferably, the reinforcing panel 6 comprises a locking element 7 foldable on a sixth line of intended folding 51 obtained along the lateral edge 94 of the reinforcing panel 6. Advantageously, said lateral edge 94? the one contiguous to said fifth folding line 43 and which faces the central panel 1. Preferably, the side edges 94, 95 of the reinforcing panel 6 extend parallel to the longitudinal direction Y. Advantageously, the blocking element 7 is shaped like a tongue, preferably substantially trapezoidal in shape. Advantageously, the locking element 7 extends for at least two thirds of the lateral edge 94. Alternatively, the locking element 7 can be advantageously extend along the entire length of the side edge 94. In some embodiments not shown ? advantageously possible to combine more? side edge clamping elements 7 94.

Preferably, the support appendix 17, 18 comprises a first connection element 35. Said first connection element 35 is? advantageously made on an outer edge 33, 34 of the support appendage 17, 18. Advantageously, said outer edge 33, 34 develops parallel to the longitudinal direction Y. Preferably, there are two connection elements 35 for each outer edge of the appendage support 17, 18. The connection element 35 ? advantageously configured to be insertable in a corresponding second connection element 36. Said second connection element 36 ? preferably made on the central panel 1. Said second connection element 36 can? preferably be placed alongside the respective first intended folding line 22, 23. Said first folding line 22, 23 ? advantageously oriented parallel to the longitudinal direction Y. The connection between the first connection element 35 and the second connection element 36 ? suitable for keeping the support appendix 17, 18 in contact with the respective side panel 2, 3, how will it be? illustrated later. Advantageously, the first connecting elements 35 are configured as protrusions having a mainly longitudinal extension. Preferably, the second connecting elements 36 are configured as openings having a predominantly longitudinal extension.

Advantageously, the central panel 5 comprises a recess 44 suitable for receiving the fingers of a user. Preferably, the recess 44 ? obtained on an outer edge 77 of the front panel 5, said outer edge 77 being advantageously oriented parallel to the transversal direction X. Preferably, the recess 44 has a semicircular shape. The function of the recess 44 will come? clarified later in the description.

Figures 2-5 illustrate an advantageous sequence of successive folding of the blank 10, so as to obtain a relative container 100, visible for example in Figures 4 and 5 in an open configuration.

Preferably, the front panel 5 and the rear panel 4 are intended to be folded with a downward fold on the respective first folding line 24, 25 in order to be positioned almost perpendicular to the central panel 1.

Advantageously, the first flaps 11-14 are intended to be folded with a downhill fold on the respective third folding line 26-29 to be positioned almost perpendicular to the front panel 5 or to the rear panel 4. Preferably, the first fins 11, 13 connected to the rear panel 4 are positioned almost perpendicularly with respect to said rear panel 4 and the first flaps 12, 14 connected to the front panel 5 are positioned almost perpendicularly with respect to said front panel 5. Advantageously, the second side flaps 15, 16 are intended to be folded with a downhill fold on the respective second folding line 41, 42 to abut against the respective side panel 2, 3. Preferably, there are glue dots on said second side flaps 15, 16 suitable for fixing said flaps abutting on the respective side panel 2, 3. Advantageously, said glue dots extend along the longitudinal direction Y.

Preferably, each support appendage 17, 18? intended to be folded with a downstream fold on the respective fourth intended folding line 31, 32, abutting on the respective side panel 2, 3. In this way ? it is advantageously possible to enclose both the first flaps 11-14 and the second flaps 15, 16 between the support appendage 17, 18 and the respective side panel 2, 3. thus advantageously forming a housing 90 delimited by the central panel 1, the front panel 5, the rear panel 4 and the support appendices 17, 18, as visible in figure 4.

Advantageously, the first connection element 35 of the support appendages 17, 18 is inserted into the respective second connection element 36, preferably by form coupling. In this way a connection is created between the first connection element 35 and the respective second connection element 36 which facilitates the maintenance of the support appendix 17, 18 in the abutment position on the respective side panel 2, 3.

Preferably, the reinforcing panel 6 is intended to be positioned in abutment with the rear panel 4 as shown in figure 5. Advantageously, the locking element 7 protrudes towards the housing 90 and is spaced from the central panel 1, i.e. from the bottom of the container 100. Advantageously, the width R of reinforcement panel 6 ? substantially equal to or slightly less than the height D of the rear panel 4. In this way the distance between the blocking element 7 and the central panel 1, which forms the bottom of the container 100, will be equal to or slightly lower than the height D. Ci? allows the locking element 7 to be positioned substantially flush with an opening 88 of the housing 90. Advantageously, said opening 88 ? defined by the outer edge 77 of the front panel 5, by two fourth fold agreement lines 31, 32 and by the seventh fold agreement line 87. Preferably, the distance between the opening 88 and the central panel 1 is equal to the height D.

The blocking element 7 ? able to keep in position one or more? any objects that can be inserted into the collapsible container 100. Advantageously, the object? shaped like a box 111, said box 111 preferably containing a bottle.

Advantageously, the box 111 has a substantially parallelepiped shape.

Preferably, the box 111 has a height d substantially equal to the height D of the rear panel 4 so that the box 111 is flush with the opening 88 of the container 100 when said box 111 is positioned flush with the opening 88 of the container 100. inserted in the housing 90 of the container 100. Preferably, the locking element 7 and the central panel 1 hinder the movement of the box 111, in a direction parallel to a height direction Z. The height direction Z is advantageously perpendicular to the horizontal plane XY. Preferably, the box 111 has a length l substantially equal to the length L of the central panel 1.

Arranging the object 111 in the housing 90 of the container 100, so that a longitudinal edge 112 of said object 111 is aligned with the longitudinal direction Y, ie it extends substantially parallel to the side walls of the container 100, ? advantageously possible to accommodate a plurality? boxes 111 placed side by side along the transversal direction X inside the housing 90 of the container 100, said boxes preferably having a width t equal to a submultiple of the width T of the central panel 1. In the example illustrated in figure 6, they have been insert three boxes 111 advantageously having width t equal to one third of the width T of the central panel 1. Advantageously, the support appendages 17, 18 abutting on the respective side panels 2, 3 hinder the movement of the box 111, or of the boxes 111 side by side , along the transversal direction X. Advantageously, ? It is possible to insert between one and five objects 111 inside the container 100.

Preferably, the box 111 has a length l substantially equal to the length L of the central panel 1. Advantageously, when the box 111 is? inserted in the housing 90 so as to have its own longitudinal edge 112 substantially aligned with the longitudinal direction Y, said object 111 ? hindered in its movement along said longitudinal direction Y by the front panel 5 and by the rear panel 4.

Advantageously, the recess 44 aids in the insertion of a user's fingers, thereby facilitating the removal or insertion of the box 111 from or into the slot 90. The recess 44 is? particularly effective in manipulating the box 111 when its dimensions are such that it is flush with the opening 88.

By positioning the reinforcing panel 6 against the rear panel 4 ? It is possible to increase the resistance of the container 100. Advantageously, said increase in resistance occurs in particular if the weight of the objects present in the housing 90 rests on said panels 4, 6. A further advantage lies in the fact that the volume of the housing 90 is substantially unchanged compared to a container without a reinforcing panel 6.

Preferably, can an alternative positioning of the reinforcing panel 6 can also be provided. Advantageously, the reinforcing panel 6 can be positioned in an intermediate position inside the housing 90, so as to form an angle ? between the reinforcing panel 6 and the rear panel 4, ie the rear wall of the container 100. The value of the angle ?, visible in figure 4, ? preferably between 30? and 60?. The corner ? it advantageously has such a value that the reinforcing panel 6 is positioned substantially in correspondence with a diagonal of the central panel 1, so as to define two sub-housings that are equal to each other and substantially have a right triangular shape. In this case, can it should be advantageously provided that the length K of the reinforcing panel 6 is equal to the extension of said diagonal. The alternative positioning of the reinforcement panel 6 ? particularly useful in case you want to separate any objects in the housing 90, for example in the case of fragile objects, such as glasses, avoiding that direct contact between said objects could cause damage.

In a preferred embodiment, the blank 10 comprises a cover panel 8 connected to the rear panel 4 via a seventh folding line 87 positioned so that the rear panel 4 is interposed between the cover panel 8 and the central panel 1 Said cover panel 8 ? advantageously connected through further seventh folding lines 51, 52, 53 to second side panels 62, 64 and to an upper panel 63. Advantageously, the upper panel 63 has substantially the same shape and dimensions as the front panel 5 and the rear panel 4 , i.e. width T and height D. Preferably, the second side panels 62, 64 have substantially the same shape and dimensions as the side panels 2, 3, i.e. length L and height D. Advantageously, the upper panel 8 has substantially the same shape and dimensions of the central panel 1, i.e. length L and width T.

Preferably, the top panel 63 ? provided with third lateral flaps 68, 69, connected to the upper panel 63 through an eighth line of intended folding 71, 72. Said eighth lines of intended folding 71, 72 are advantageously obtained along lateral edges of the upper panel 63, said lateral edges extending parallel to the longitudinal direction Y. Said third side flaps 68, 69 preferably have at least one rounded edge.

Advantageously, at least one of the second side panels 62, 64 comprises a third connection element 37 able to be inserted into the respective second connection element 36, as will be the case? described later. Said third connection element 37 ? advantageously made on an outer edge 91, 92 of the second side panel 62, 64. Advantageously, said outer edge 91, 92 extends parallel to the longitudinal direction Y. Preferably, there are two third connection elements 37 for each outer edge 91, 92 of the second side panels 62, 64. Advantageously, the third connecting elements 37 are configured as protrusions having a mainly longitudinal extension.

Preferably, the second side panels 62, 64 and the top panel 63 are intended to be folded with a downhill fold on the respective further seventh fold lines 51-53 to be positioned almost within the fold. perpendicular to the cover panel 8. In this way you can? advantageously forming a top lid 140 of the collapsible container 100 delimited by the lid panel 8, the second side panels 62, 64, the top panel 63 and the rear panel 4. Preferably, the rear wall helps to define both the housing 90 and the top cover 140.

Advantageously, the cover panel 8 is intended to be rotated on the seventh line of folding agreement 87. In this way ? Is it possible to rotate the upper cover 140 which can? be positioned between an open position and a closed position of the container 100.

In the open position, the top panel 8 ? spaced from the opening 88 so that the housing 90 is accessible.

Preferably, in order to move the upper lid 140 into the closed position, the second side panels 62, 64 are placed side by side with the respective support appendix 17, 18 which? in turn positioned abutting the respective side panel 2, 3. If there are objects in the housing 90, the second side panels 62, 64 are advantageously positioned between said objects and the respective support appendage 17, 18. Preferably, each third connection element 37 pu? be inserted into the respective second connection element 36. This contributes to keeping the top cover 140 in the closed position. In the closed position, the cover panel 8 ? advantageously positioned in correspondence with the opening 88 so as to close the housing 90. Furthermore, in this position the cover panel 8 favors the maintenance of the blocking element 7 in position between said cover panel 8 and any objects present in the ?housing 90. In this way ? is it possible to further increase the stability? of the objects present in the container 100, in particular by limiting their movement in the height direction Z.

Preferably, the third flaps 68, 69 are intended to be folded with a downward fold on the respective eighth fold lines 71, 72 so as to be positioned almost perpendicular to the top panel 63. ? it is advantageously possible to insert the third flaps 68, 69 in corresponding slots 141. Said slots 141 can advantageously be present between the front panel 5 and the support appendices 17, 18 folded on the respective side panel 2, 3. Alternatively, the slots 141 can be formed between the support appendages 17, 18 and the respective side panel 2, 3. Preferably, by inserting the third tabs 68, 69 into the slots 141, ? It is possible to position the upper panel 63 abutting the front panel 5. Advantageously, the upper panel 63 is positioned externally with respect to the front panel 5. The coupling of the third flaps 68, 69 with the slots 141 contributes to keeping the upper lid 140 in a closed position.

In other embodiments can? be expected a cover already? format to be applied to the collapsible container 100 so as to close its housing 90. Said lid already? format can be provided either in place of the upper cover 140 or in addition to it.

In further embodiments, the blank 10 can include a closing panel interposed between the reinforcing panel 6 and the blocking element 7. In this case, the closing panel ? intended to be positioned in correspondence with the opening 88, thus closing the housing 90. Advantageously, the closure panel has substantially the same shape and dimensions as the central panel 1, i.e. the same length L and the same width T. Said closure panel can ? be provided in place of the upper cover 140. The blocking element 7 can? be preferably positioned between the front panel 5 and any objects present in the housing 90. In this embodiment, the locking element 7 can? advantageously have the function of keeping the closing panel in correspondence with the opening 88. Advantageously, the recess 44 of the front panel 5 can? be used to facilitate the handling of the blocking element 7, favoring the insertion of the user?s fingers. There? can? be useful both to facilitate the insertion of the locking element 7 in a position between the front panel 5 and any objects present in the housing 90, and to facilitate the removal of said locking element 7 from said position.

The folded container 100 obtained by folding the blank 10 advantageously comprises the bottom, two side walls, the front wall, the rear wall, defining the housing 90, and the reinforcing panel 6 comprising the blocking element 7. Preferably, the reinforcement panel 6 ? positionable in abutment against the rear wall of the container 100, so that the blocking element 7 protrudes towards the housing 90 and spaced from the bottom 1 of the container 100. Alternatively, the reinforcing panel 6 is advantageously positionable inside the housing 90 so that an angle ? between the reinforcing panel 6 and the rear wall of the container.

The invention solves so? the proposed problem, achieving at the same time a plurality? of benefits. In particular, the die-cut allows to obtain a container which is particularly resistant and suitable for keeping any objects which can be inserted inside it in the desired position. Furthermore, the blank allows a container to be formed simply and quickly, said container being capable of being easily and repeatedly assembled/disassembled without damaging the final shape or the seal of the container itself.

Claims (12)

1. Blank (10) for making a collapsible container (100) comprising a plurality of of agreed folding lines defining on said blank (10) a plurality? of panels suitable to be folded according to a sequence of successive folds to define said container (100), said plurality? of panels including: a central panel (1) having the shape of a right quadrilateral intended to form a bottom of said container (100), two side panels (2, 3) intended to form two side walls of said container (100), a front panel (5) and a rear panel (4) connected to said central panel (1) through corresponding first folding lines (22-25) and intended to respectively form a front wall and a rear wall of said container (100); the front panel (5) and the rear panel (4) being provided with first lateral flaps (11-14) connected to the respective panel (4, 5) by means of third fold lines (26-29); each side panel (2, 3) being provided with a second side flap (15, 16) connected to the corresponding side panel (2, 3) via second fold lines (41, 42); each side panel (2, 3) being provided with a respective support appendage (17, 18) connected to the corresponding side panel (2, 3) by means of fourth fold lines (31, 32); a support appendage (17) being provided with a reinforcing panel (6) connected to said support appendage (17) by means of a fifth folding line (43) provided on an edge of the support appendage (17) contiguous to said fourth line of intended folding (31), said reinforcing panel (6) comprising a locking element (7) foldable on a sixth intended line of folding (51) formed along a lateral edge (94) of the reinforcing panel ( 6), said side edge (94) being contiguous to said fifth folding line (43) and facing the central panel (1). 2. Die-cut (10) according to the preceding claim, wherein the front panel (5) and the rear panel (4) are intended to be folded with down fold on the respective first intended folding line (24, 25) to be positioned almost perpendicularly with respect to the central panel (1) and the first flaps (11-14) are intended to be folded with a downhill fold on the respective third folding line (26-29) to be positioned almost perpendicular to the front panel (5) or rear panel (4). 3. Die-cut (10) according to the preceding claim, wherein the second lateral flaps (15, 16) are intended to be folded with a downhill fold on the respective second intended folding line (41, 42) to abut against the respective panel side (2, 3) and each support appendix (17, 18) ? intended to be folded with a downhill fold on the respective fourth folding line (31, 32), abutting against the respective side panel (2, 3) and enclosing both the first flaps (11-14) and the second flaps (15 , 16) between the support appendage and the respective side panel and forming a housing (90) delimited by the central panel (1), the front panel (5), the rear panel (4) and the support appendages (17, 18). 4. Die-cut (10) according to the preceding claim, wherein the support appendage (17, 18) comprises a first connection element (35) configured to be insertable in a corresponding second connection element (36) made on the central panel (1), so as to keep the support tab (17, 18) in contact with the respective side panel (2, 3). The blank (10) according to claim 3 or 4, wherein the reinforcing panel (6) is intended to be positioned in contact with the rear panel (4) so that the blocking element (7) protrudes towards the housing (90) and is spaced from the central panel (1). 6. Die-cut (10) according to any one of the preceding claims, wherein ? provided a cover panel (8) connected to the rear panel (4) via a seventh line of intended folding (37) positioned so that the rear panel (4) is interposed between the cover panel (8) and the central panel ( 1), said cover panel (8) being connected via additional seventh fold lines (51, 52, 53) to second side panels (62, 64) and to an upper panel (63). 7. Die-cut (10) according to the preceding claim, wherein the second side panels (62, 64) and the top panel (63) are intended to be folded with a valley fold on the respective further seventh fold lines (51-53 ) to be positioned almost? perpendicularly to the cover panel (8), so as to form an upper cover (140) of said collapsible container (100) delimited by the cover panel (8), by the second side panels (62, 64), by the upper panel ( 63) and from the rear panel (4). The blank (10) according to the preceding claim, wherein the top panel (63) is provided with third lateral flaps (68, 69) connected to the upper panel (63) via an eighth fold line (71, 72), said third lateral flaps (68, 69) being shaped to be inserted into corresponding slots (141) adjacent to the support lugs (17, 18), so as to keep the top cover (140) in a closed position. The blank (10) according to any one of the preceding claims, wherein the front panel (5) comprises a recess (44) adapted to receive the fingers of a user. 10. Die-cut (10) according to any one of the preceding claims, wherein the blocking element (7) is configured as a tab, preferably substantially trapezoidal in shape. Collapsible container (100) formed by folding the blank according to one of the preceding claims. 12. Collapsible container (100) according to the preceding claim, comprising the bottom, the two side walls, the front wall, the rear wall, defining the housing (90), and the reinforcing panel (6) comprising the sealing element locking element (7), said reinforcing panel (6) being positioned abutting the rear wall of the container (100), so that the locking element (7) protrudes towards the housing (90) and spaced from the bottom ( 1) of the container (100), or said reinforcing panel (6) being positionable inside the housing (90) so that an angle (?) is defined between the reinforcing panel (6) and the rear wall of the container (100).