ES2241579T3 - PACK OF CARTON AND TROQUEL. - Google Patents

Abstract

An article carrier and a blank (10) for an article carrier for holding articles with tapered sides, for example connected plastic cups, comprising a top wall (16), opposed side walls and a base wall hingedly connected together to form a tubular structure and wherein there further comprises article retention means (29) hingedly connected to one of said side walls (14,18) and said base panel, which article retention means is formed by a plurality of panels including a side end flap so constructed and arranged to taper inwardly towards said base (12,20) to substantially conform to the shape of an adjacent article.

Description

Cardboard and die container.

Background-drawing of the invention.

The present invention generally relates to a cardboard container provided with a retention feature of tip, and more particularly to a support of type articles envelope, designed for items such as plastic containers linked together, containing yogurt or a food product Similary.

The prior art presents enveloping cartons containing limb closure panels intended to close the cardboard container ends that are connected to the panels respective side and base for a series of bag panels They help form the end closure panels. exist numerous arrangements of bag panels whose examples are represented in documents US 5 180 054 and FR-A-144 536. Structures of the prior art represent article holders containing sides  plans, for example, for boxes or bottles, and due to this, end retention structures are formed in a relationship flat with the sides and ends of the respective corners.

When items containing walls inclined, or articles provided with flange, for example packages of yogurt, they are packed in a group, a space is formed between neighboring articles which authorizes a relative displacement between neighboring items inside the carton, which It is not desirable. The prior art supports do not imply satisfactory retention for items of this type. Another problem associated with the prior art refers to the retention of Bag panels with stand when items are free of travel.

Another aspect of the invention relates to generally to a provision and to a fixing procedure that it carries at least three panels, in a relationship of riding

It is well known in the art of fixing two panels, for example base panels of an envelope die, in riding relationship, using tail. Like construction of the carton becomes more advanced, it is normally it is necessary to fix three panels together, or more, in provisions of end retention, for example. If this is the case, the queue must then be applied on two separate panel surfaces with In order to fix all panels together. That application Supplementary queue can increase the complexity of the process of assembly of the cardboard container, which eventually requires the use of supplementary machines. The assembly process can also be slowed down, which reduces performance global.

The present invention and its embodiments preferential are intended to exceed or at least mitigate prior art problems.

One of the aspects of the invention proposes a article support intended to retain items, for example plastic containers joined together, comprising a wall upper, opposite side walls and a connected base wall with each other in an articulated way to form a tubular structure and further comprising a retention means of articles connected in an articulated manner to an element between said side walls and said base wall, such retaining means of items consists of a variety of panels including a side end flap conceived and placed to narrow inwards towards said base wall in order to Sensibly conform to the shape of a neighboring article. The middle article retention further comprises an end flap of base connected to the side end flap by a bag panel and in which the base end flap is connected so articulated to the base panel and adapted to be under a outer article so that the side end flap is retained in a straightened state.

According to another optional feature of said aspect of the invention, the base end flap comprises also a leg designed to be under the article and to prevent its exit in the course of a distortion of the carton so as to keep said side end flap in a state Straightened. Preferably, the leg can be defined by a side and end edge of the base end flap and by a  slit between the base end flap and the bag panel, said slit ends at the level of the fold line joining the base end flap to bag panel.

According to another optional feature of said aspect of the invention, the base end flap may be connected to the base wall by a fold line that defines a acute angle with the bottom edge of the neighboring side wall to maximize then the length of the base end flap that It is under the article.

According to another optional feature of said aspect of the invention, the fold line between the flap of side end and the side wall of neighboring cardboard can be curved to print an inward flex to the flap of lateral end

According to another optional feature of said aspect of the invention, the fold line joining the flap of side end to the bag panel forms an angle to the side wall edge to compensate for panel placement in a straightened state to then maintain the bag panel and the base end flap in a substantially flat arrangement with said base wall.

A second aspect of the invention proposes a article retention means intended to retain the articles inside the tubular cardboard, said retention means of items comprises a connected side end flap of articulated way to a cardboard side wall by a line of curved fold, a base end flap connected so articulated to a cardboard base panel and a bag panel joining  articulated way the side end flap to the flap of base end, or a bag fold line joining the flap from end of base to bag and collinear panel with a line imaginary tangent to the curved fold line.

According to an optional feature of the second aspect of the invention, we can also provide an opening trimmed on a part of the base end flap, where a opening edge interrupts said bag fold line and is collinear with said imaginary line.

According to another optional feature of the second aspect of the invention, the fold line joining the flap of side end to the bag panel may be outdated with respect to  to the bottom edge of the side wall panel in order to compensate for panel placement in a straightened state to keep then the bag panel and the base end flap in a substantially flat arrangement with said base panel.

A third aspect of the invention proposes a cardboard cut intended to form a support of items that must retain items with inclined sides, for example containers of connected plastic, comprising a top panel, a first side wall panel, a base panel and a second panel side wall connected in series to each other so articulated, further comprising an article retention means articulated connected to at least one element between said side wall panel and said base wall panel, such means of article retention consists of a variety of panels including a side end flap conceived and arranged to close inward in the direction of said base panel in order to adapt significantly to the shape of an article neighbor kept in a straightened cardboard. The means of retention of articles further comprises a connected end end flap to the side end flap by a bag panel and in which the  base end flap is articulated connected to the base panel and adapted to be under an outer article so that the side end flap is retained in a been straightened.

Preferably, the base end flap it can also comprise a leg designed to be under the article and to prevent its exit in the course of a distortion of the cardboard in order to keep the side end flap in a been straightened. More preferably, the leg may be defined by a side and end edge of the end flap base and through a slit between the base end flap and the bag panel, said slit is terminated at the level of the line of fold by attaching the base end flap to the bag panel.

According to an optional feature of the third aspect of the invention, the base end flap may be connected to a base panel by a fold line that defines a acute angle with the bottom edge of the neighboring side wall to maximize the length of the base end flap that is Find under the article.

According to another optional feature of the third aspect of the invention, the fold line between the flap of side end and the side wall of neighboring cardboard is curved to print an inward flexion of the end flap side in a straightened cardboard.

According to another optional feature of the third aspect of the invention, the fold line joining the flap of side end to the bag panel can form an angle with with respect to the edge of the side wall to compensate for placement of the panel in a straightened state in order to maintain then the bag panel and the base end flap in one arrangement substantially flat with said base panel.

Other embodiments of the invention, serving as an example, they will be described now, solely by way of example, with reference to the drawings attached in the which:

Figure 1 represents a die intended for make a cardboard container according to an aspect of the invention;

Figure 2 represents the second form of realization of a die intended to make a cardboard container according to an aspect of the invention;

Figure 3 is an enlarged perspective view. of a part of the end retention panels as well as the arrangement of the bag, view from inside the container of cardboard from the cut represented in figure 1a;

Figures 4a and 4b represent cardboard containers made from the cuts represented in figures 1a and 1b respectively;

Figures 5 and 6 represent examples of packaging Known cardboard cartons loaded with plastic containers in one position storage and in an inclined position;

Figure 7 represents the cardboard container represented in figure 4a, loaded with articles, and

Detailed description of the embodiments preferential

In reference to the drawings, and in particular to Figures 1 and 2, two embodiments of a die intended to make a cardboard container, consisting of cardboard or a similar folding sheet material. In these ways of Realization of the carton-type packaging can be made from dies, although the invention may apply to other types of cardboard packaging, for example packaging of  cardboard with load at the end, without leaving the invention. Further, it will be emphasized that the base wall is rather formed by panels locked together, the cardboard cut can be reset, any wall, such as a top wall or a wall lateral being constituted by panels locked together.

Considering the first embodiment shown in figure 1 the cut 10 comprises a first panel base 12, a first side wall panel 14, a top panel 16, a second side wall panel 18, a second base panel 20 connected in series articulated manner along lines of fold 22, 21 26, and 28 respectively.

A series of panels intended to form a article retention structure is considered in one of the ends of the cardboard container, or at each end thereof.

Article retention provision 29 located in a corner of the side and base panels 12, 14 comprises a base end flap 30, connected so articulated to the base panel 12 along the fold line 32. There is also a side end flap 42, connected from articulated way to the side wall panel 14 along the fold line 43. In this embodiment the line of fold 43 is curved in order to print a flex towards the inside on the side end flaps when the cardboard is Straightened. The side end flap 42 and the end flap of base 30 are connected to each other by a bag panel 34. It it is highlighted in figure 1 that the bag panel 34 is connected of articulated way to the base end flap 30, along the fold line 38 and the side end flap 42 at along the fold line 40. Preferably, the line of fold 38 is collinear with an imaginary line tangent to the line of fold 43 and extending beyond it.

The base end flap 30 can also comprise a leg portion 31 partially defined by the side end and flap end edges 30 per line of cut 36 that ends at the fold line 38. In the course of use, leg portion 31 is suitable for retention between the base panel 12 and an outer article to maintain the side end flap 42 in straightened state.

An opening 44 for relaxing the contractions may be planned. Figure 1 represents a example of opening 44 of relaxation of contractions that is trimmed on the base end flap 30, and that, preferably, it extends to the base panel 12. It is it is preferable that opening 44 does not extend to the bag panel 34, and instead an opening edge 44 is collinear with the fold line 38. This feature entails a reduction in contractions during the fold of the end flap of base 30 and bag panel 34. Moreover, the bag panel 34 has no tendency to suffer distortion during the process of assembly, which leads to an improvement of the fold along fold lines 38 and 40.

Similarly, the opposite sides of the panel base 12 and side wall panel 14 can on the other hand comprise a similar article retention placement 47 containing a base end flap 48 connected so articulated to base panel 12 along the fold line 46. There may also be a side end flap 58 connected in an articulated manner to the side wall panel 14 at along the fold line 60. In this embodiment, the fold line 60 is curved to print a flex towards the inside to the side end flaps when the cardboard is Straightened. The side end flap 58 and the end flap of base 48 are connected to each other by a bag panel 54. It will highlight in figure 1 that the bag panel 54 is connected to articulated way to the base end flap 48 along the fold line 52 and the side end flap 58 at along the fold line 56. Preferably, the line of fold 52 is collinear with an imaginary line that is tangent to the fold line 60 and extending beyond it. The base end flap 48 may further comprise a part of leg 49 partially defined by the side and end edges of the flap 48 and by the cutting line 50 that ends at the fold line 52. During use, leg portion 49 is suitable to be retained between the base panel 12 and an article outside to retain side end flap 58 in state Straightened.

An opening 62 for relaxing the contractions similar to the relaxation opening 44 of the contractions can be planned, which, in this form of embodiment, is trimmed in the base end flap 48, and preferably it extends into the base panel 12.

In one of the kinds of embodiments, the fold lines 32 and 38 defining the end flap of base 30 of article retention structure 29 may diverge from an intersection point with the lines of fold 40 and 43, such that the fold line 32 forms a acute angle a with the fold line 22, preferably 85 degrees, and that the fold line 38 is offset by an angle acute β, for example 15 degrees, with respect to a line imaginary perpendicular to the fold line 22. As an option, the fold line 40 connecting bag panel 34 to the flap of lateral end 42 may form an acute angle? with with respect to an imaginary elongation of the fold line 22, to compensate for the panel layout in a straightened state. Preferably the acute angle \ can, for example, be of 10 degrees, which corresponds substantially to the angle \ Phi (figure 3) of the side wall panel with respect to a line imaginary vertical Y-Y and / or the difference between the container bottom and top flange of the container. Naturally the article retention structure 47 would be adapted in consequence to correspond to the retention structure 29 of articles.

Other configurations are desirable, and in particular different configurations of fold lines 32, 38 and 40 and of the corresponding fold lines 46, 52 and 56 of such so that the side end flaps 42, 58 can go entering inward towards base 12, 22 in a more or less large measure, to conform in the form of a different profile of the article. In certain embodiments, the degree of torque imparted to the side end flaps 42, 58 it can be modified by changing the relative position of one or the other, or each one of the fold lines 32, 38, 40.

It will be highlighted in Figure 1 that the structures end closure consisting of panels 18 and / or 20 are designated by corresponding numerical references with the addition of the letter "a" due to the fact that they are substantially identical to end retention structures constituted by panels 12 and 14 described above, and, by This is not described in more detail.

Considering the second embodiment represented in figure 2, the cut 110 is similar to that of the first embodiment and therefore the similar panels are designate by the same numerical reference but are affected by the numerical prefix "1". Therefore only the differences are They describe in more detail.

It will be noted that in the second form of embodiment, the fold lines 143 and 160 are straight and that extend from the upper edge of the side wall panel 114 to end at the intersection of fold lines 140, 122 and respectively 156, 122. Then the end flaps sides 142 and 158 have a noticeably configuration triangular. The side end flaps 142, 158 function as the same way as the side end flaps of the first embodiment. Apart from these differences, the end retention structures are constituted by panels similar and are mounted in the same way as in the first way of realization.

Considering the cardboard container assembly a from the cardboard die, as shown in figure 1, the cut 10 needs a series of folding and gluing operations successive that are preferably performed on an online machine, such that the cardboard does not need to be rotated or returned for the execution of its assembly. Said folding process does not It is limited to the one described above and can be modified according to the particular manufacturing requirements.

The carton is applied to a group of articles, for example a group of four articles arranged in twice two items, the upper panel 16 is supported by the  upper faces of the items. Then panels 14 and 18 of side walls bend out of alignment with the panel upper 16 along the fold lines 24, 26 and the base panels 12, 22 fold out of alignment with the 14, 18 side wall panels, respectively along the fold lines 22, 28 such that the side panels 14, 18 and base panels 12, 20 each bend in the direction the other. After folding the wall panels 14, 18 and the panels base 12, 20, the construction of retention structures of end is done.

Each end retention structure is performed in a substantially identical way, so much so that now describe only the construction of structure 29 of article retention. It is usual that the structures of a cut are performed virtually simultaneously thanks to a adequate arrangement of the guiding means and / or the means of positioning

Thus, article retention structure 29 it is done by first folding the first base end flap 30 on the fold line 32 such that the end flap base is bent to establish a face contact relationship against face with the base panels 12. This action causes the bag panel fold 34 out of alignment with the flap of base end on the fold line 38 and this is carried inwards towards the base panel 12 until a part of the outer face of the bag panel 34 covers the flap base end 30.

When the bag panel 34 is carried towards the inside towards the base panel bends out of the alignment with the side end flap 42 along the fold line 40 until a relationship is established perpendicular that causes displacement of the end flap side out of alignment with side wall panel 14 and brings it in an obtuse angle relationship along the line of fold 43. Then the side end flap 42 is bound to narrow inwards towards the base panel 12, as depicted in figure 3. In this embodiment, the Curved fold line 43 forces the side end flap 42 to curl inward to conform to the shape of the item which must be maintained by the support. Optionally, the flap base end 30 and bag panel 34 may be fixed to base panel 12 with the aid of glue or other suitable means, or according to another aspect of the invention described below.

As shown in Figure 3, the angle of inclination \ Phi of the side wall panel 14 with respect to a imaginary vertical plane Y-Y is regulated by doing vary the angle? (figural) of the fold line 40. It it will also indicate that in this embodiment the flap of end 42 is set to torsion to suit the item form.

The other article retention structures they are also performed in the same way as described in the Two preceding paragraphs.

After that, the fold of the panels laterals 12, 14 and base 20,18 is finished in such a way that a part 64 (figure 1) of base panel 12 is placed in relation contact face to face with a riding part corresponding 64a (figure 1) of the base panel 20 and is fixed to the same to form a base structure, with the help of glue or other known means in the field, as shown in the figure 4th.

The assembly of the second embodiment represented in figure 2 is practically the same as described above, with a view to making a cardboard container represented in figure 4b.

Figures 5 and 6 represent the examples of supports of known articles, for example yogurt containers that they contain flanges and they are connected along their faces superior. In the usual storage position represented In Figure 4, there is an interval W between the lower parts of neighboring articles. When the loaded cardboard box is lifted, the articles have a tendency to move towards each other in the X direction, represented in figure 6, and because of that, they make suffer a distortion to the cardboard container.

In consideration of the distortion of the support of previously known articles, leg portion 31 of the form of embodiment of Figure 1 can have a dimension such that the width of the base end flap 30 is greater than the distortion distance D, shown in figure 6. As variation, the fold line 32 may be inclined such shape that the free end edge of the base end flap 30 forms an angle with respect to the fold line 32. This may cause an increase in the effective width of the flap of base end 30 due to the fact that it is the corner of the flap of end of base 30 which is placed at the point located most inside before its free end edge, as depicted in figure 4a. Such an arrangement allows the structures of article retention remains intact even when the packaging of cardboard is subject to distortion.

This is caused by the fact that the flaps base end 30, 48, 30a, 48a are prevented by items being displaced abroad releasing the article retention structure. The leg part of the shape of embodiment of Figure 2 can also be placed as before, to allow article retention structures the Stay intact

Figure 7 represents a cardboard container made from a die of the first embodiment represented in figure 1. More particularly, a item support intended to hold items, for example plastic yogurt containers joined together, comprising a upper wall 16, opposite side walls 14, 18 and a base 12, 20 connected in an articulated manner so that they form a tubular structure, and in which and on the other hand a means 29 of article retention connected in an articulated manner to one of said side walls. 14 and to said base wall 12, said means Article retention is made up of a variety of panels comprising a side end flap 42, conceived and arranged so that it narrows inward in the direction to said base in order to adapt substantially to the shape of a adjacent article A.

The present invention and its embodiment preferential refer to a provision with a view to maintaining together two outer panels and at least one inner panel, without however it is envisioned that the invention can be applied to a variety of supports, and is not limited to those of the envelope type described further above and she could be used in numerous applications in the which three panels or more must be fixed in a relationship of face-to-face contact in which only one is used gluing operation, for example to fix a panel of separation inside the container.

The fact that as used herein, address references such as "superior,", "base", "end" and "lateral" do not limit the respective panels to said orientations, but they serve only to distinguish said panels from each other. The terms "printed" or "no printed "are only used to distinguish a face from a another face panel, and the panels are not limited to having faces oriented in this way. In addition, the term "panel" must, to respond to the purposes pursued in this request, be understood as meaningful of any type of panel, or flap that may constitute a part of a cardboard or of A cardboard die.

It will take into account the fact that before the upper wall consists of panels fixed together, the cardboard cut can be repositioned so that some of the walls such as the upper wall or the side wall are constituted by panels fixed together. Any reference to a articulated connection must be understood not referring necessarily to a single fold line: in fact it is desired that The articulated connection may be constituted by one or more of the following lines: a marked line, a weak line or a line folding, without leaving the scope of the invention.

The present invention and its embodiment preferred refer to an article holder that has a way to ensure satisfactory resistance to hold items safely, but with a degree of flexibility such that during transport the items are not retained in the support. The cut shape minimizes the amount of cardboard needed and the support can be applied to a item group, manually or through an automatic machine. It is envisioned that the invention can be applied to various supports and not be limited to the enclosures of the type described previously. In addition, or in a variant, the cardboard can be adapted to support a greater number, or a smaller number of items, without leave the scope of the invention.

Claims (16)

1. Cardboard container intended to contain items (A), for example commercial plastic boats, comprising an upper wall (16; 116; 216), opposite side walls (14, 18; 114, 118; 214) and a wall of base (12, 20; 112, 120; 212) connected to each other in an articulated manner to form a tubular structure and further comprising an article retaining means (29, 29a, 47, 47a; 129, 147; 229, 247) connected in an articulated manner to an element between said side walls and said base wall, said article retention means is formed by a variety of panels including a side end flap (42, 58, 42a, 58a; 142 , 158, 142a, 158a; 242, 258), conceived and arranged to narrow inwards in the direction of said base wall, characterized in that said article retaining means further comprises a base end flap (30, 48, 30a , 48a; 130, 148, 130a, 148a, 230, 248) connected to the flap lateral end (42, 58, 42a, 58a; 142, 158, 142a, 158a; 242, 248) by a bag panel (34, 54; 34a, 54a; 134, 154, 134a, 154a; 234, 254) and in which the base end flap is hingedly connected to the base wall and adapted to be under an outer article, so that the side end flap is retained in a straightened state. 2. Cardboard container according to claim 1, in which the base end flap (30, 48, 30a, 48a; 130, 148, 130a, 148a, 230, 248) further comprises a leg (31,49, 31a, 49a; 131, 149, 13la, 149a; 231, 249) designed to be under the article (A) and to prevent its exit in the course of a distortion of the carton to maintain said end flap lateral in a straightened state. 3. Cardboard container according to claim 2, in which the leg (31.49, 31a, 49a; 131, 149, 131a, 149a; 231, 249) is defined by a side edge and flap end of base end (30, 48, 30a, 48a; 130, 148, 130a, 148a, 230, 248) and through a slit (36.50, 36 a, 50 a; 136, 150, 136 a, 150 a; 236, 250) between the base end flap (30, 48, 30a, 48a; 130, 148, 130a, 148a, 230, 248) and the bag panel (34, 50; 34a, 50a; 134, 154, 134a, 154a; 234, 254) said slit ends at the level of the fold line (38, 52, 38a, 52a; 138, 152, 138a, 152a; 238, 252) connecting the base end flap to the bag panel. 4. Cardboard container according to any one of the claims 1 to 3, wherein the base end flap (30, 48, 30a, 48a; 130, 148, 130a, 148a, 230, 248) is connected to the base wall (12, 20; 112, 120; 212.) along a fold line (32, 46, 32a, 46a; 132, 146, 132a, 146a; 232, 246) that defines a acute angle α with the lower edge (22, 28; 122, 128; 222) from the neighboring side wall (14,18; 114, 118; 214) to maximize thus the length of the base end flap found under the article. 5. Cardboard container according to any one of the preceding claims, in which the fold line (43, 60, 43a, 60a; 243, 260) between the side end flap (42, 58, 42a, 58a; 242, 258) and the side wall of neighboring cardboard (14, 18; 218) is arched to print an inward flexion of the side end flap. 6. Cardboard container according to any one of the preceding claims, in which the fold line (40, 56, 40a, 56a; 140, 156, 140a, 156a; 240, 256) connecting the flap lateral end (42, 58, 42a, 58a; 142, 158, 142a, 158a; 242, 258) to the bag panel (34, 54; 34a, 54a; 134, 154, 134a, 154a; 234, 254) forms an angle with respect to the edge of the side wall (14, 18; 114, 118; 214) to compensate for the panel layout in a been straightened to keep the bag panel and flap base end (30, 48, 30a, 48a; 130, 148, 130a, 148a; 230, 248) in a substantially flat arrangement with said wall base (12, 20; 112, 120; 212). 7. Article retention means as defined in any one of claims 1 to 3 to retain articles inside a tubular cardboard, said means of article retention comprises a side end flap (42, 58, 42a, 58a; 142, 158, 142a, 158a; 242, 258) connected so articulated to a side wall (14, 18; 114, 118; 214) of the cardboard by an arched fold line (43, 60, 43a, 60a; 243, 260), a base end flap (30, 48, 30a, 48a; 130, 148, 130a, 148a; 230, 248) connected in an articulated manner to a base panel (12, 20; 112, 120; 212) of the caron and a bag panel (34, 54, 34a, 54a; 134, 154, 134a, 154a; 234, 254) connecting in an articulated manner the side end flap to the base end flap, where a bag fold line (38, 52, 38a, 52a; 138, 152, 138a, 152a; 238, 252) connecting the base end flap to the bag panel is collinear with an imaginary line tangent to the line of arched crease. 8. Article retention means according to claim 7, further comprising an opening (44, 62, 44a, 62a; 144, 162, 144a, 162a; 244, 262) cut into a part of the base end flap (30, 48, 30a, 48a; 130, 148, 130a, 148a, 230, 248) where one edge of the opening interrupts said line of bag fold (38, 52, 38a, 52a; 138, 152, 138a, 152a; 238, 252) and it is collinear with that imaginary line. 9. Article retention means according to claim 7 or 8, wherein the fold line (40, 56, 40a, 56a; 140, 156, 140a, 156a; 240, 256) connecting the flap of lateral end (42, 58, 42a, 58a; 142, 158, 142a, 158a; 242, 258) to the bag panel (34, 54; 34a, 54a; 134, 154, 134a, 154a; 234, 254) is delayed with respect to the lower edge of the panel side wall (14, 18; 114, 118; 214) to compensate for the layout of the panel in a straightened state to keep the panel bag and base end flap (30, 48, 30a, 48a; 130, 148, 130a, 148a; 230, 248) in a substantially flat arrangement with the mentioned base panel (12, 20; 112, 120; 212).

         \ newpage
      

10. Cardboard container comprising a means of retention of items in accordance with any one of the claims 7 to 9. 11. Cardboard die intended to form a cardboard container intended to contain articles (A) of inclined sides, for example connected plastic cans, containing a top panel (16; 116; 216) a first side wall panel (14; 114; 214), a base panel (12, 20; 112, 120; 212) and a second side wall panel (18; 118) connected in series to each other in an articulated manner, further comprising a retention means of articles (29, 29a, 47, 47a; 129, 147; 229, 247) connected in an articulated manner to at least one element in addition to said side wall panel and said base panel, said article retention means is formed by a variety of panels including a side end flap (42, 58, 42a, 58a; 142, 158, 142a, 158a; 242, 258) designed and arranged to retract inward in the direction of said base panel in a cardboard straightened, characterized in that said article retention means comprises other a base end flap (30, 48, 30a, 48a; 130, 148, 130a, 148a; 230, 248) connected to the side end flap by a bag panel (34, 54; 34a, 54a; 134, 154, 134a, 154a; 234, 254) and in which the base end flap is connected from form articulated to the base panel and adapted to be under an outer article (A), so that the side end flap is retained in a straightened state. 12. Die according to claim 11, in the which the base end flap (30, 48, 30a, 48a; 130, 148, 130a, 148a; 230, 248) further comprises a leg (31, 49, 31a, 49a; 131, 149, 13la, 149a; 231, 249) designed to be under the article (A) and to prevent its exit in the course of a distortion of the carton to maintain said end flap lateral (42, 58, 42a, 58a; 142, 158, 142a, 158a; 242, 258) in a been straightened. 13. Die according to claim 12, in the which leg (31, 49, 31a, 49a; 131, 149, 131a, 149a; 231, 249) is defined by a side edge and end flap end of base (30, 48, 30a, 48a; 130, 148, 130a, 148a; 230, 248) and by a slit (36, 50, 36a, 50a, 136, 150, 136a, 150a; 236, 250) between the base end flap and the bag panel (34, 54, 34a, 54a; 134, 154, 134a, 154a; 234, 254), said slit ends at level of the fold line (38, 52, 38a, 52a; 138, 152, 138a, 152a; 238, 252) by connecting the base end flap to the panel bag. 14. Die according to any one of the claims 11 to 13, wherein the base end flap (30, 48, 30a, 48a; 130, 148, 130a, 148a; 230, 248) is connected to a base panel (12, 20; 112, 120; 212) along a fold line (32, 46, 32a, 46a; 132, 146, 132a, 146a; 232, 246) that defines a acute angle (a) with the bottom edge (22, 28; 122, 128; 222) of the neighboring side wall (14,18; 114, 118; 214) to maximize the length of the base end flap that is under the Article. 15. Die according to any one of the claims 11 to 14, wherein the fold line (43, 60, 43a, 60a; 243, 260) between the side end flap (42, 58, 42a, 58a; 242, 258) and the side wall of neighboring cardboard (14, 18; 114, 118; 214) is arched to print a flex towards the inside on the side end flap in a cardboard container Straightened. 16. Die according to one of claims 11 to 15, in which the fold line (40, 56, 40a, 56a ,; 140, 156, 140a, 156a; 240, 256) connecting the side end flap (42, 58, 42a, 58a; 242, 258) to the bag panel (34, 54, 34a, 54a; 134, 154, 134a, 154a; 234, 254) forms an angle with respect to the edge of the side wall (14, 18; 114, 118; 214) to compensate for the panel layout in a straightened state to keep the bag panel and base end flap (30, 48, 30a, 48a; 130, 148, 130a, 148a; 230, 248) in a substantially disposable arrangement flat with said base panel (12, 20; 112, 120; 212).