EP1136368A1 - Package blank made of carton or the same, to make a package body having a tamper-evident closure - Google Patents

Abstract

Blank of cardboard where among different elements of blank, there is strip (7) of single thickness secured to two tongues (8, 9) also of single thickness located in prolongation of ends of strip, such that after setting up blank and construction of container, strip applied against external surface of surface (4b, 44, 2) of container. Two tongues are folded down and applied against external surface of two opposite side walls (5, 6), adjacent surface either directly or with interposition of doubling panel (15-16). The setup container is adapted to hold its shape and to be closed irreversibly, and hence inviolably by adhesive (12) between strip and its two tongues on the one hand and the three adjacent surfaces (2, 4b, 5, 6) on the other hand

Description

The present invention relates to a blank intended to be transported from a place of production to a place of use where it is stored more or less long before to be used, i.e. put into volume and then closed after receiving objects to wrap. It is therefore a blank intended to be used by a non-professional user packaging, folded, filled and closed by hand for unitary use, as and when needs encountered by individuals or by employees in shops, post offices or shops of courier companies, etc.

Consequently, the problem which the invention solves is not that of packaging. mechanical, in factories or workshops where packaging operations are carried out the chain, on automatic multi-station machines, connected by transfer such as continuous conveyors, because the blanks used are designed for a automatic processing from the sample, one by one, from a stack, to the closing with immediate setting glue, after setting in volume in conformers, filling and grouping for the introduction of a plurality of full and closed containers on handling pallets or in crates cardboard.

It follows from these circumstances that there cannot be equivalence between glue and long-acting adhesive, for example, or between walls to be held by mechanical parts in a provisional position and the elements of a blank which should fold easily and stay in place when the blank is handled with both hands of a private person.

Mechanically operated containers to which reference has just been made are described in particular in patents US 2,464,065, US 2,995,290 and US 4,826,074.

There are multiple different structures allowing to carry out by hand containers in volume from a prefabricated blank, itself from a blank in cardboard or similar material.

Depending on the case, the finished container has a fixed, invariable volume, or on the contrary has a adjustable perimeter thanks to which the volume of the container adapts to that of the articles to wrap. In the first case it is a box and in the second case it is a envelope or case.

Whatever the case, closing the container is a problem to be solved all the more difficult as we seek more simultaneous qualities: simplicity of volume container from the blank, robustness, inviolability, reasonable price, ease of employment, etc.

In the factory, the mechanical closure of a folded container is obtained by means attached, outside the container itself: glue, adhesive tape, strip and others ties, heat-sealable plastic sheet and the like.

By far the best solution for manual closing is to integrate the closing means to the cardboard structure itself and thus we know different variants of tab and slot systems but despite numerous improvements over the years, the tab and slot systems do not give satisfaction on their own and never constitute an inviolable closure.

Mention may be made of the solution described in US Pat. No. 5,503,325, which consists in using external closing means, namely adhesive tapes, and applying them by advance, according to segments of given length, on a cardboard blank, leaving a fraction of this free length to be detached from the blank and then folded over a part adjacent to the container by volume.

This solution is very difficult to apply because the locations of the adhesive tapes are imperative so that these adhesive tapes can perform their function while they are incompatible with the means of mass production of cardboard blanks.

It is then necessary to plan one or more operations to take over the work, with specific machines, which leads to such industrial complications that prices in most cases is unacceptable, especially as the results obtained for the end user are not decisive for him to accept a supplement sensitive price.

We also know many variants according to which an effect adhesive extended is applied once and for all to certain areas of a blank, to ensure the closure of the container because by itself it guarantees the inviolability of the closure, this inviolability being characterized not by infinite resistance to any aggression, which is especially impossible in the field of corrugated articles, but by the fact that any action allowing fraudulently to extract at least part of the contents, or to introduce after closing any object, even if very flat like a letter in its envelope, is revealed to immediate and direct observation, that any damage is apparent externally.

But so that these containers can be obtained economically, by industrial means, the adhesive must be applied in a simple manner, preferably in a single line and in the "machine direction", that is to say parallel to the direction in which the cardboard blank is moved before or during manufacturing blank.

For the closure of the container to be truly inviolable, the elements must not directly joined by the adhesive, are designed to leave no cracks and have no weaknesses such as, for example, signs likely to be fraudulently extracted by unfolding then reinserted by sliding after having released a passage between the interior and the exterior.

This is why such containers come from blanks having panels, walls, legs and other elements holding to each other, which makes it more difficult to fold the blank for placing the container in volume, placing the objects to be packaged, then closing. In addition, this requires a larger area of cardboard and / or shaping. additional, all resulting in high production costs.

But, here again, we perceive certain disadvantages because if we seek the minimum of adhesive, the closure of the container is imperfect and if a closure is required perfect, we must accept the presence of several zones provided with non-adhesive tapes parallel, which brings us back to the previous solution, namely a complication of manufacturing and an increase in cost prices, not to mention the difficulties of manipulation for the end user.

The present invention departs from known solutions and makes it possible to produce blanks which can be very simple and very economical, or more or less elaborate depending on the chosen models, since their manufacture can be limited to cuts and creases, creating, when folded in volume, independent walls, not joined together to each other.

The containers produced by folding in volume of a blank according to the invention are therefore more or less complex and advanced but still have a simple closure and inviolable.

To this end, the invention relates to a blank of cardboard or similar material, having cutting lines and rowing lines inside a perimeter cut in a plate and thus subdivided into elements some of which are possibly glued flat against each other, said blank being intended to be delivered and stored flat, then to be subsequently folded, placed in volume, and kept folded, thus constituting a container for objects to be wrapped, the volume of the blank and the arrangement of the objects in front be carried out manually and individually for each blank, characterized in that among the different elements of the blank, there is at least one strip in one thickness integral with at least one tab also in a single thickness located in the extension of one end of said strip, so that after volume setting of the blank and constitution of the container, the strip can be applied against the outside of a wall of said container, and that each tab can be folded down and applied against the outer face of a wall, adjacent to said wall, the container in volume in front be kept in shape and closed irreversibly, and therefore inviolable, by means an adhesive placed between the strip and its leg (s) on the one hand and the adjacent walls on the other hand.

Other characteristics of the invention will appear in the detailed description below made with reference to the accompanying drawing. Of course, the description and the drawing do not are given as an indicative and non-limiting example.

Figure 1 is a schematic perspective view of a container set in volume to from a blank according to the invention, the container being represented at the time of its closing.

Figure 2 is a schematic perspective view of the container of Figure 1, after closing.

Figure 3 is a schematic plan view of the container, in the same situation as in figure 1.

Figure 4 is a schematic plan view of the container, in the same situation as in figure 2.

Figure 5 is a schematic view of a blank according to the invention, for make the container of figures 1 to 4.

Figure 6 is a schematic perspective view of the blank of Figure 5 after a start volume by folding and constituting the preparation of a container.

Figure 7 is a schematic view of a blank according to the invention, according to a mode of realization different from that of figures 1 to 6.

Figure 8 is a schematic perspective view of the blank of Figure 7 after a start volume by folding and constituting the preparation of a container.

Figure 9 is a schematic perspective view of the blank of Figure 8, after straightening of its lower part, the container being able to receive objects to be wrapped.

Figure 10 is a schematic perspective view of the filled container, ready for its closing.

Figure 11 is a schematic view of the finished container, filled and closed, as it stands present for his expedition.

Figure 12 is a schematic view of a blank according to the invention, according to a mode of a different embodiment from that of FIGS. 1 to 6 and 7 to 11.

Figure 13 is a schematic perspective view of the blank of Figure 12 after a beginning of volume by folding and constituting the preparation of a container.

Figure 14 is a schematic perspective view of the blank of Figure 13, after straightening of a blocking panel ensuring the stability of the lower part of the container, the latter being in a position to receive objects to be packaged.

Figure 15 is a schematic view of the finished container, filled and closed, as it stands present for his expedition.

Figures 16 to 19 are schematic views of a blank according to the invention, according to an embodiment equivalent to that of FIGS. 12 to 15 and with which provision is made two parallel lines of long-acting adhesive covered with protective tape on the elements which should constitute a container lid, which allows a closure improved.

FIG. 20 is a plan view of a blank according to the invention similar to that of Figures 16 to 19, the long-acting adhesive and its protective tape extending here on the lid and on the container body.

Figures 21 and 22 are schematic views showing the construction of a container from the blank of FIG. 20, according to two different variants.

Figure 23 is a schematic view of the container being closed, obtained with either of the two variants of FIGS. 21 and 22.

Figures 24 and 25 are schematic views of the closed container respectively according to the variant of FIG. 21 and according to the variant of FIG. 22, and ready to shipping.

Figure 26 is a plan view of a blank according to the invention similar to that of Figures 20 to 25, the long-acting adhesive and its protective tape extending here on the lid and on only part of the container body.

Figure 27 is a schematic view showing the body of the mounted container, before closure, obtained with the blank of FIG. 26.

Figure 28 is a view of the container of Figure 27 being closed.

Figure 29 is a schematic view of the closed container, ready for shipment.

Figure 30 is a schematic view of a blank cut and grooved in accordance with the invention.

FIG. 31 is a schematic view of a blank according to the invention, after folding and collage of some elements of the blank of figure 30.

Figure 32 is a schematic perspective view of the blank of Figure 31, after partial recovery, in order to constitute a container.

Figure 33 is a schematic perspective view of the blank of Figure 32, constituting a container suitable for receiving objects to be packaged, and ready for its closure.

Figure 34 is a schematic view of the finished container, filled and closed, as it stands present for his expedition.

Figures 35 to 39 are views similar to those of Figures 30 to 34 but illustrating a another embodiment of the invention according to which the blank has edges protective exteriors.

Figure 40 is a schematic view of a blank according to the invention according to another embodiment.

Figure 41 is a schematic perspective view of the blank of Figure 40 after straightening and joining of some of its elements, to form a body of stable container suitable for receiving objects to be packaged.

Figure 42 is a schematic perspective view of the blank of Figure 41 during closing.

Figure 43 is a schematic view of the finished container, filled and closed, as it stands present for his expedition.

Figure 44 is a schematic view of a blank according to the invention, according to another embodiment.

Figure 45 is a schematic perspective view of the blank of Figure 44 after straightening and joining of some of its elements, to form a body of stable container suitable for receiving objects to be packaged.

Figure 46 is a schematic perspective view of the blank of Figure 45 during closing.

Figure 47 is a schematic view of the finished container, filled and closed, as it stands. present for his expedition.

FIG. 48 is a schematic view of a blank according to the invention and having the necessary elements so that after their assembly, they constitute together an automatic container bottom.

Figure 49 is a schematic view of the blank obtained from the blank of Figure 48, after assembly of the elements constituting the automatic bottom and after folding and joining of its extreme panels to form a deformable parallelogram, the blank then appearing flat, in a double thickness, after folding along two lines diagonally opposite from the parallelogram.

Figure 50 is a schematic perspective view of the blank of Figure 49 slightly deployed, i.e. in an intermediate position between its flat presentation of the Figure 49 and its final position of the rectangular container of Figures 52 and 53.

Figure 51 is a schematic sectional view taken along the line LI - LI of the figure 50, showing the perimeter closed on itself of the blank of FIG. 50, in position intermediate.

Figure 52 is a schematic perspective view of the blank of Figures 49 to 51 after unfolding and then set in volume according to a parallelepiped, before placing objects to be wrapped and completely closed.

Figure 53 is a schematic view of the finished container, filled and closed, as it stands present for his expedition.

FIG. 54 is a schematic view of a blank according to the invention intended for constitute a blank which, after setting in volume, must form a container of the known type under the name of "American case" and having the necessary elements so that the container can be fully assembled, kept in volume and closed without organs exterior such as glue, staples or strapping.

Figure 55 is a schematic view of the blank obtained from the blank of Figure 54, after folding and joining its end panels to form a deformable parallelogram, the blank then being flat, in a double thickness, after folding along two opposite lines diagonally from the parallelogram.

Figures 56 and 57 are schematic views showing two stages of mounting in blank volume in Figure 55.

Figures 58 and 59 are schematic views of the completed container, respectively singing and flat.

FIG. 60 is a schematic view of a blank according to the invention intended for constitute a blank which, after setting in volume, must form a container of the known type under the name of "American box" and having a common type bottom, the height of the container being adjustable according to the content.

Figure 61 is a schematic view of an American box obtained from a blank not shown but similar to that of Figure 55, itself from the draft of the Figure 50, the bottom of which is closed and which is being closed at a height lower than its maximum.

Figures 62 and 63 are schematic views of two American crates obtained at from two blanks of the same dimensions, identical to that from the blank of Figure 60, and showing respectively the maximum height and the minimum height possible for the same format of the initial draft.

The blank according to the invention allows by folding in volume to constitute a container suitable for receiving objects to be packaged and which has its own closing means inviolable.

Figures 1 to 4 illustrate the general principle of the invention when a cardboard blank corrugated cut and creased (and possibly printed) has been folded to form volume a container body 1 and a closure panel 2.

The body 1 can be of different types, as some examples are described more far away, and in FIG. 1, a body 1 has voluntarily been shown without any detail, thereby showing that this body 1 can be any, except that it must have a bottom, or base 3, two transverse walls, of which only one 4 is visible, and two side walls 5 and 6 adjacent to the transverse wall 4.

It should be understood that we consider here that if the body can be arbitrary, except that it must have a background, implies that this background can itself be arbitrary, as will appear later in this description.

The closure panel 2 is secured to a strip 7 on either side of which is find two tabs 8 and 9 holding on to the strip 7 by fold lines 10 and 11.

The internal face of the strip 7 and the legs 8 and 9 carries a wide line of adhesive 12 shown in dotted lines.

After having set the body 1 in volume, the closure panel 2 is folded down, then apply the strip 3 against the outside face of the transverse wall 4 and fold tabs 8 and 9 on the outer face of the side walls 5 and 6 respectively, the adhesive 12 bringing together in a single line the three adjacent walls 5, 4 and 6 and thus making the tamper-evident container, except by tearing off or tearing, which would be immediately visible and would reveal fraud. Accidental opening is excluded.

To perfect the inviolability and strengthen the side walls 5 and 6, the legs 8 and 9 can be longer than those shown and, in particular, have the same surface that the walls 5 and 6 themselves which they then completely cover.

In FIG. 5, an example of a cut and creased corrugated cardboard blank has been shown. which meets the tamper-evident closure requirements described above.

In addition to the elements already described and which bear the same references, we see that the blank has panels 15 and 16 connected to the closure panel 2 by fold lines 17 and 18 located in the extension of fold lines 10 and 11, as well as flaps 20 - 21 and 22 - 23 holding respectively to the side walls 5 and 6 by lines of transverse folding 24 and 25.

The closure panel 2 is connected to a transverse wall 4 a by a transverse fold line 26.

The transverse wall 4 b carries an end panel 27 which is determined by a double fold line 28 and which carries two tongues 30 and 31, while the base 3 is passed through two slots 32 and 33.

It is assumed here that the adhesive 12 is of the prolonged effect type, that is to say that it retains long stickiness so it can be used long after it has been applied to the strip 7 and the legs 8 and 9, which requires covering it with a ribbon of protection 34, commonly made of silicone paper or synthetic material including one face at least is weakly adherent, to allow the user to easily remove this tape when he wants to use the adhesive.

Figure 6 explains how a user manually creates a container in volume from the blank in Figure 5 which is delivered flat:

The side walls 5 and 6 are straightened along fold lines 35 and 36 located in the extension of lines 10 - 17 and 11 - 18, and fold inwards, opposite the from each other, flaps 20, 21, 22 and 23, then straighten the end panel 27 fold over the flaps 21 and 23, against their inner face, until the tongues 30 and 31 lock in the slots 32 and 33, which immobilizes the flaps 21 and 23 as well as the walls 5 and 6, making the body 1 and, in particular, the base 3 stable.

The user can then manually place the objects to be packed on the base 3 using both hands since body 1 is stable.

Then straighten the panels 15 and 16 and fold the closure panel 2 over the objects arranged on the base 3, guiding the panels 15 and 16 so that they place against walls 5 and 6 and outside of them.

We are then in the same situation as that of FIG. 1.

After removing the protective tape 34, one can press and fix the strip 7 against the transverse walls 4 b and the tabs 8 and 9 against the panels 15 and 16 which having the same dimensions as the walls 5 and 6 double their thickness, this is why they are called "dubbing panels".

These lining panels 15 and 16 are placed outside but it is also possible to arrange them inside the side walls 5 and 6, although it is a less convenient solution for closing the container, because the objects already placed on base 3 may constitute a gene for internal placement.

In addition, this provision leaves two slots at the top of the containing, between each side wall and its interior lining panel, a slot which does not not allow access to the interior of the container but which can be the source attachment and incidents when handling the container, when it is shipped by post or courier, because a thin envelope can slip into it.

The lining panels 15 and 16 placed externally give the container a complete inviolability as this leaves no passage between the exterior and inside, not even a slit since all the intervals are hidden, while elements of the blank are not joined together (neither by gluing, nor by stapling, nor by partitions folded into bellows, etc.) other than by fold lines constituting, after setting in volume, the edges of the parallelepiped container.

Figures 7 to 11 illustrate another embodiment in which the blank fits in a quadrilateral that does not create any waste when it is cut.

The blank has, from the top of FIG. 7, the strip 7 and its legs 8 and 9, a closure panel 41, a transverse wall 42, a bottom 43 and a second wall transverse 44, these elements being integral and separated by fold lines 45.46, 47 and 48.

The fold lines 10 and 11 extend over the entire length of the blank and determine security flaps 51 and 52, lining panels 53 and 54, flaps 55 and 56 and the side walls 5 and 6.

To put the container in volume, straighten the side walls 5 and 6 and fold back right angle the flaps 55 and 56 (Figure 8) then straighten the transverse wall 44 after having folded at right angles the lining panels 53 and 54, in order to place them against the side walls 5 and 6, against their inner face (Figure 9).

This produces a container that can be described as "vertical" by comparison with that of Figures 1 to 6 which is rather "horizontal". We can therefore place objects at wrap from the top of the container in Figure 9 so that they rest on the bottom 44-55-56, maintaining the transverse walls 42 and 44 facing each other.

The container is finished by folding down the closure panel 41 and, laterally, the security flaps 51 and 52 then, after removal of the protective tape 34, positioning and bonding of the strip 7 and the legs 8 and 9.

The finished container is then presented as in FIG. 11.

Here again, according to the invention, the only adhesive 12 applied in a single straight line keeps the container in volume and closed inviolably.

It is observed that the security flaps 51 and 52 close the slots which would remain without them between the flaps 55 - 56 and the closure panel 41.

Figures 12 to 15 show an embodiment similar to that of Figures 1 to 6.

Figure 14 shows the positioning of the lining panels 15 and 16 and their fixing by lugs 8 and 9.

To prevent lifting and deformation of the rear side of the doubling 15 and 16 which remains free, we planned here to add two short segments of adhesive 12 and its protective tape 34, on the inside of these panels dubbing.

After closing, and having previously removed the protective tapes 34, the panels lining 15 and 16 are pressed against the side walls 5 and 6 to which they adhere firmly, so you can no longer lift them.

In Figures 16 to 19, there is shown an embodiment according to which the blank has two parallel strips and no longer just one.

The strips are formed by the lining panels 15 and 16 which are integral legs 8 and 9, which are separated from the previous strip 7, which does not constitute more than a panel attached to the cover 2.

The long-acting adhesive 12 and its protective tape are arranged longitudinally, near the free edges of the lining panels 15 and 16, in two simple lines.

It may be more favorable to have the adhesive 12 and the protective tape 34 longitudinally than transversely and if there are two lines 12-34 instead of one, this does not constitute a technical difficulty since they are parallel and can therefore be carried out at the same time.

The body of the box mounts in the same way as that of Figures 12 to 15 but as for the cover, we remove the two protective tapes 34, then straightens the transverse wall 4 a and the cover 2 before the panels lining 15 and 16, then fold the panel 7 against the transverse wall 4 b , then fold the two lining panels 15 and 16 against the side walls 5 and 6 to which they are fixed by means of the adhesive 12 unmasked during removal of the protective tape 34, and finally the two tabs 8 and 9 are brought back against the panel 7 to which they are also fixed by the adhesive 12.

In Figure 19, we see that the finished container has a facade whose part central is formed by the panel 7 and two lateral parts formed by the legs 8 and 9 superimposed on panel 7.

Here again, a container is obtained which is closed in an inviolable manner and does not allow it to remain. no passage between inside and outside.

In Figures 21 to 24, we see a variant of the previous embodiment according to which extends the two lines of adhesive 12 and protective tape 34 on the body of the box, that is to say on the legs 20-22, on the side walls 5-6 and on the tabs 21-23, which removes the panel 27.

The adhesive 12 of the flaps 20-21 and 22-23, allows to mount the body of the box and to keep upright before placing the objects to be packed and, of course, before close the cover, as shown in Figures 21 and 22.

In FIG. 21, a variant is shown according to which the protective tape 34 is removed from the four flaps 21, 22, 23 and 24 and they are all applied outside the body of the container, namely outside the the transverse wall 4 a for the flaps 20 and 22, and on the transverse wall 4 b for the flaps 21 and 23.

It is observed that the adhesive located inside the walls 5 and 6 is unused, and therefore that it it is not necessary to remove, at this location, the protective tape 34.

If, despite everything, the user removes this protective tape 34, the unmasked adhesive 12 risks sticking to the wrapped objects, which is not desired, so that the removal of the protective tape 34 where it is essential on the lining panels 15 and 16 as well as on legs 8 and 9 does not automatically cause its removal from the walls 5 and 6, that is to say that a transverse cut of the ribbon 34 is made in the extension of the transverse fold lines 24 and 25.

This operation is simple to perform on the machine, automatically immediately after removal tape 34.

• ne disposer d'adhésif que sur le couvercle (figure 16) mais conserver un panneau supplémentaire 27,
• disposer de l'adhésif sur le couvercle et sur le corps (figure 20) et supprimer le panneau 27.

The two options between which to choose are:

• only have adhesive on the cover (figure 16) but keep an additional panel 27,
• place the adhesive on the cover and on the body (figure 20) and remove the panel 27.

The choice between these two solutions depends on the manufacturing methods, the cost of labor mobilized and product prices.

FIG. 22 shows another variant according to which the ribbon 34 is neither removed from the walls 5 and 6, nor from the flaps 20 and 22 and the latter is folded before straightening the transverse wall 4 a , so that they are inside the container body and not outside.

With this variant, the container body always remains upright before placing the objects to be wrapped without it being necessary to maintain it with the hands but it is when I close the container by means of the lid that the body acquires its cohesion and becomes permanently stable and undeformable (Figure 23).

Depending on whether we chose to have the flaps 20 and 22 outside the body of the container (Figure 21) or inside (Figure 22), the finished and closed container is according to figure 24 or figure 25.

In Figure 24 the flaps 20 and 22 are visible on the rear wall 4a of the container while they are invisible in Figure 25.

With the embodiment of FIGS. 16 to 19, the adhesive 12 and its protective tape 34 are arranged only on two opposite longitudinal sides of the cover. With the embodiment of Figures 20 to 25, this adhesive 12 and its tape protection 34 are arranged on two opposite longitudinal sides of the cover and the container body.

Referring now to Figures 26 to 29, we see an embodiment which constitutes an intermediary between the two previous embodiments and allowing also the elimination of part 27.

Indeed, we see in these figures that the adhesive 12 and its protective tape 34 are arranged, during factory production, on the two longitudinal sides of the cover and only on flaps 21 and 23 of the body.

Thus, the problem mentioned with regard to FIGS. 20 to 25 is solved, concerning the presence of adhesive 12 and its protective tape 34 in places where they are not essential, or even useful.

The blank is set up by first constituting the body by straightening the side walls 5 and 6 and the transverse wall 4 b , then removing the protective tape 34 from the flaps 21 and 23 and folding them to bring against the outer face of the wall 4b (Figure 27) where they are fixed with the adhesive 12 of these components.

The user therefore does not need to maintain the body of the container to take care of the objects to be wrapped because this body is freestanding.

After placing these objects, the user finishes the container as already explained: removal of the protective tape 34 from the tabs 8 and 9 as well as the lining panels 15 and 16, folding of the cover, gluing of the panels 15 and 16 outside the walls side 5 and 6, application of the strip 7 against the external face of the flaps 21 and 23, and immobilization of the assembly by folding down the two legs 8 and 9 on the face outside of the strip 7 (FIG. 28).

Figure 29 shows the finished container, ready for shipment.

The elimination of the flap 27 which the embodiments of FIGS. 20 to 29 allow. is very important, not only by the simplification of the manipulations of the user that the adhesive provides, but also with regard to the manufacturing conditions and the price returns.

Indeed, it is clear that the removal of the flap 27 provides a saving of material first but it also avoids falls whose surface is added to that, direct, of panel 27. The cutting tool is simplified because two neighboring blanks can be determined by cutting a sheet of corrugated cardboard into a single line, and as they all have a simple rectangle outline, cutting them does not create any fall if we correctly calculate the dimensions of the plate in which we cut a plurality of blanks.

With this embodiment, it is also shown that it is possible to add to the container a tab 75 called "safety", the use of which is described in detail below. It immobilizes the strip 7 when it is applied against the flaps 21 and 23 glued and before folding down the legs 8 and 9, because this tab 75 is folded and then engaged in a slot (not visible in the drawing) provided at the base of the transverse wall 4 b .

But it is obvious that if one wishes to take advantage of all the advantages coming from the removal of the panel 27, it is necessary to dispense with the presence of the safety tab 75, so as to have a perfectly quadrangular blank of the type shown in FIG. 20: no panel 27, and no tongue 75.

Figures 30 to 34 show an embodiment which differs from those which have been previously described by the fact that the blank comes from a blank folded on itself, so that the blank is always delivered flat but has a double thickness.

In these figures, the same elements have the same references as those in the figures 12 and following.

On the blank 01, the fold lines 10 and 11 are continuous from the edge of the strip 7 to the outer edges of the flaps 21 and 23 and show no cutout separation of flaps 20 to 23.

These flaps are each marked with an oblique row of lines 60, 61, 62 and 63 respectively which determines for each flap two triangular parts, one of which receives glue 64, just before the blank is folded back on itself according to the lines 10 and 11, so that the flaps 20 and 22 are made integral with the transverse wall 4 a and that the flaps 21 and 23 are made integral with the transverse wall 4 b .

In FIG. 31, we see how the blank looks after folding the blank and bonding of flaps 20 to 23. However, so that the blank occupies less surface during its transport and its storage, the tab 8 and the lining panel 15 on the one hand, the tab 9 and the lining panel 16 on the other hand can also be folded along lines 10 and 11, flat on the strip 7 and on the closure panel 2.

The use of such a blank to obtain a container by volume, implies that the side walls 5 and 6 are lifted according to the arrows F1 (FIG. 32), which forces the transverse walls 4 a and 4 b to straighten out. and the flaps 20 to 23 to be folded along their oblique fold lines 60, 61, 62 and 63.

When the transverse wall 4 b is perpendicular to the base 3, the end panel 27 is raised and it is brought back according to the arrow F2 over the flaps 21 and 23, perpendicular to the base 3, practically against the wall transverse 4 b (figure 33).

The objects to be packaged can then be placed on the base 3, after which the protective tape 34 is removed to unmask the adhesive 12, the closure panel 2 is lowered, the lining panels 15 and 16 are folded sideways. outside of the side walls 5 and 6 and the strip 7 is applied to the transverse wall 4 b and the tabs 8 and 9 to the lining panels 15 and 16.

The finished container is shown in Figure 34 and it can be seen that it is a parallelepiped with flat faces.

The embodiment of Figures 35 to 39 shows an embodiment similar to that of Figures 30 to 34 but here the finished container has outer edges of protection, the same elements with the same references.

For this, the blank 02 is marked with four longitudinal rowing lines 65 - 66 on one side and 67 - 68 which determine two strips 69 and 70 which receive glue 64 like the flaps 20 to 23 and which extend continuously from the edge of the strip 7 to, practically, a transverse fold line 71 which separates the base 3 from the transverse wall 4 b .

After application of the adhesive 64 on the flaps 20 to 23, and on the strips 69 and 70, the blank is folded on itself along lines 66 and 68, as shown in Figure 36.

The glued strips 69 and 70 create outer edges 72 and 73 on both sides of the container, so that the side walls formed by the superposition of the walls 5 - 6 and lining panels 15 - 16 are set back from the outer edges of the container. These outer edges 72 and 73 constitute excellent protection of packaged objects, against impact, friction, compression and falling as the container may be subjected to during its handling and transport.

It is observed that here the outer edges 72 and 73 are formed of four segments and that after folding and closing the container, they are placed continuously around the entire perimeter of the container.

The volume of the container (figure 37) is obtained by straightening the walls 5 and 6 according to the arrows F1, as with the previous embodiment but here they are fold along lines 65 and 67 which do not constitute the edges of the container, these being formed by lines 66 and 68.

The end panel 27 is folded down to keep the side walls 5 and 6 straightened, then lift the lining panels 15 and 16 and the legs 8 and 9 which fold also on lines 65 and 67.

Due to the folding of the blank 02 to constitute the blank of Figure 36, and the bonding strips 69 and 70, the protective tape 34 is taken between the two thicknesses of cardboard and in order to still be able to unmask the adhesive 12, we have provided cutouts 34a and 34b (Figure 35) which constitute three separate segments of ribbon protection 34A, 34B and 34C, which can be removed individually (Figure 37).

Then the lining panels 15 and 16 are applied against the outer face of the side walls 5 and 6 and the container is finished, as already described, by applying the strip 7 against the transverse wall 4 b and the legs 8 and 9 against the lining panels 15 and 16 (Figure 38).

A particular case has been shown here according to which the strip 7 is secured to a safety tab 75 intended to be folded when the container is closed to be introduced into a slot 76 formed at the base of the transverse wall 4b in which it gets stuck and opposes the separation of the strip 7 if by accident it was forcefully lifted.

In order not to hinder the engagement of the tongue 75 in the slot 76, the panel end 27 is cut with a wide notch 77.

The finished container is shown in Figure 39 and it can be seen that it is a parallelepiped with lateral faces recessed from an outer rim of protection.

It is understood that the tongue 75 is not essential since the strip 7 is fixed to the transverse partition 4 b by the adhesive 12 and this variant has been presented here only to show that it is compatible with the invention when we want to further increase the security of the closure during handling of storage, sorting, transport and distribution.

In Figures 40 to 43, there is shown an embodiment of the invention according to which completely forms the body 1 of the container, giving the four walls which surround the base 3 (transverse walls 4 and side walls 5-6) a fixed position without even partially straighten the other elements of the blank.

We see that the blank of Figure 40 has flaps 20 and 22 longer than those of Figures 5 to 15 and notched with notches 20 a and 22 a , while the flaps 21 and 23 are unchanged.

The side walls 5 and 6 carry tabs 5 a and 6 a marked by lines of ramage 5 b and 6 b .

The volume of the container begins in the same way as with the realization of Figures 12 to 15: straighten the side walls 5 and 6 and fold towards inside the flaps 21 and 23, then straighten the end panel 27 which is folded down over the flaps 21 and 23, against their inner face.

Here, we also fold inwards the flaps 20 and 22 but thanks to their length, we cross them with their notches 20 a and 22 a that are face to face (Figure 41) and the flexibility of the carton is sufficient for the two crossed flaps 20 and 22 are almost parallel and thus form a transverse wall which, symmetrically to the wall 4b , keeps the side walls perfectly erect.

Thus, the container body is finished and stable, and the user can easily place it on base 3 the objects to be wrapped.

Then fold the legs 5 a and 6 a parallel to the base 3 by folding them along lines 5 b and 6 b (Figure 42) to ensure that the closure panel 2, by pressing on them, does not risk sink between the transverse 4 and side walls 5-6.

The closure is completed by applying the strip 7 to the transverse wall 4 b and the tabs 8 and 9 to the side walls 5 and 6.

The finished container is shown in Figure 43 and it can be seen that it is a parallelepiped with flat faces.

In Figures 44 to 47, there is shown an embodiment which allows the legs 8 and 9 to be applied flat and to be fixed both on the side faces 5 and 6 and on dubbing panels.

Returning to FIG. 33, it can be seen that the lining panels 15 and 16 overlap the side walls 5 and 6 and that the legs 8 and 9 are applied to the panels of lining to which they are fixed by the adhesive 12.

The solution proposed by the embodiment of FIGS. 44 to 47 is to limit the overlap surface of the lining panels, to reveal a part of the surface of the side walls 5 and 6, and to ensure that the adhesive 12 of the legs 8 and 9 applies both to said side walls 5 and 6 and to the lining panels, without sudden jump in thickness between these superimposed elements.

For this, the lining panels 151 and 161 are cut obliquely and have a substantially triangular in shape and each has two parallel slits which determine tabs 152 and 162 having a free edge opposite the part of cardboard by which they stick to the blank. The walls 5 and 6 are notched with three slots which also determine tongues 501 and 502 having a free edge opposite a part of cardboard.

We will not again describe the complete volume setting of the container, but we must specify that after folding the panels 151 and 161, their tabs 152 and 162 are exactly opposite tabs 501 and 601.

When the container is closed, the tabs 8 and 9 are applied to the side walls 5 and 6 but given their length, they are also located opposite the panels 151 and 161 located in excess thickness. Simple hand pressure to apply the adhesive 12 pushes on the tongues 152 and 162 which push the tabs 501 and 601 towards the inside of the container, without any resistance due to the flexibility of the carton.

The tongues 152 and 162 are thus placed in an inclined plane, so that the legs 8 and 9 are applied flat on their entire length, where they carry the adhesive 12 which is, of course, opposite the tongues 152 and 162.

Two tongues 153 and 163 are provided here at the base of the panels 151 and 161, intended for be folded and inserted according to arrow F3 into slots 502 and 602 formed at the base of side walls 5 and 6.

After complete closure of the container, the legs 8 and 9 are only visible and completely hide tabs 152 - 501 and 162 - 601.

The finished container is shown in Figure 47 and it can be seen that it is a parallelepiped with flat faces, without any irregularities other than the oblique obliquity legs 8 and 9.

FIGS. 48 to 53 show an embodiment of the invention which leads to a container "in height", like that of Figures 10 and 11, with this difference that we start from a blank 03 and that the blank that is delivered to the user is folded and glued on itself in double thickness.

The container is of the type comprising an automatic bottom which is well known per se and which, therefore, will not be described in detail. It is only recalled that this bottom is formed by precut elements 3 a , 3 b and 3 c and 3 d , integral with the side walls 5 and 6 and the transverse walls 4 a and 4 b . Elements 3 a and 3 c carry tabs 3 e and 3 f by which they must be bonded respectively to element 3 b and to element 4 b .

Element 3 b is a covering panel which is superimposed on all the other three elements of the bottom 3 a , 3 c and 3 d and which constitutes the base on which the objects to be packaged are arranged, provided that the container finished remains in the upright position and not in the lying position.

This panel 3b is provided with a tongue 3g which is intended to get stuck in a slit 4c formed at the base of the transverse wall 4 b is lowered when the panel 3b by pressing it, to prevent the panel 3 b to rise up.

To create the blank in the factory from the blank in Figure 48, we fold it in half along line 11 which extends to determine and separate the walls 4 a and 6 and straighten the tongue 5 c along the fold line 5 d and apply glue to it to fix it to the inside of the transverse wall 4 b folded over it, which closes the perimeter of the blank on itself and creates the blank of figure 49.

It is delivered in this form, flat in two superimposed thicknesses, and is then usable by a user to create a container in volume.

For this, the user deforms the blank in parallelogram to the shape regular parallelepiped of Figure 52, passing through all orientations intermediaries, an example of which is shown in FIGS. 50 and 51.

The arrows F4 and F5 in FIG. 41 show that the wall 4 a deviates from the wall 4 b against which it was, just as the transverse walls 5 and 6 tend to be placed parallel to each other, the acute angles α opening and the obtuse angles β closing, to all become equal to 90 ° in order to give the container set in volume a rectangular section (Figure 52).

The user initiates a hand into the container to lower the cover plate 3 b until the tongue 3g engages in the slit 4c, then places the articles to be packaged.

• il retire le ruban de protection 34,
• il rabat les pattes 5a et 6a,
• il rabat le panneau de fermeture par-dessus les pattes 5a et 6a,
• il rabat le bandeau 7 sur le panneau de fermeture 2 auquel ce bandeau 7 se fixe par l'adhésif 12,
• il applique les pattes 8 et 9 sur les parois latérales 5 et 6 auxquelles elles se fixent par l'adhésif 12.

The user then closes the container definitively:

• he removes the protective tape 34,
• it folds the legs 5 a and 6 a ,
• it folds the closure panel over the legs 5 a and 6 a ,
• it folds the strip 7 onto the closure panel 2 to which this strip 7 is fixed by the adhesive 12,
• it applies the tabs 8 and 9 to the side walls 5 and 6 to which they are fixed by the adhesive 12.

The finished container is shown in Figure 53 and it can be seen that it is a parallelepiped with flat faces which can appear as well erected (as shown) that lying.

Referring now to Figures 54 to 59, we see an embodiment of the invention making it possible to obtain a container known under the name of "case American "whose bottom is not of automatic type, contrary to the mode of previous achievement.

Here, we show that the invention makes it possible to produce a complete container, the bottom of which is obtained in exactly the same way as its closure.

Figures 54 to 56 are similar to Figures 48 to 50, only the elements in front form the bottom of the container being different, so there is no point in describing them to new.

The elements which must form the bottom of the container and which are identical and symmetrical to those having to ensure the upper closure carry the same references assigned a "'" (Premium).

It is understood that the adhesive 12, when it is applied to the face of the blank 04 in front be inside the blank and therefore inside the finished container, is necessarily next to the wrapped objects, and it is not recommended that this adhesive 12 could be in contact with these objects because they would then be fixed to the folded element which wears this adhesive 12.

It is therefore possible, quite simply, not to apply any adhesive to the closure panel 2-2 ', but then this panel folded on the legs 5 a -5 to ' and 6 to -6 to 'folded down and these legs themselves would be urged towards their lifting, out of the position which should be theirs, because of the "nerve" of the corrugated cardboard, and that would be a gene to the formation and the closing of the container because these elements 2-2 ' , 5 a -5 a 'and 6 a -6 a ' would be immobilized only after folding the strip 7-7 'and the legs 8-8' and 9-9 '.

The best solution from the practical point of view and convenience for the user is to provide adhesive 12 on the closure panel 2-2 'below the legs 5 a -5' a and 6 a -6 ' a and not in the middle part of this panel 2-2 '.

A first solution consists in providing the adhesive 12 and its protective tape 34 in a single linear and continuous application, from one edge to the other of the blank 04, from the free edge of the tab 8-8 'to 'at the free edge of the closure panel 2-2' and create two transverse cuts in the protective tape 34 so that the removal of the protective tape 34 is carried out on either side of the middle part of the closure panel 2- 2 'and that, on the contrary, it remains in place in this middle part, in order to neutralize the adhesive 12 in line with the packaged objects, while it is active in line with the folded tabs 5 a -5 a ' and 6 a - 6 a 'to which it fixes the closure panel 2-2', thus ensuring the fixing of these three elements 2-2 ', 5 a -5 a ' and 6 a -6 a '. The user can then easily fold the strip 7-7 'and the legs 8-8' and 9-9 '.

Another solution making it possible to neutralize the adhesive 12 is represented on the blank 04 of FIG. 54 which shows that the adhesive 12 and its protective tape 34 are divided into two unequal segments by an interruption 80 - 80 'located in the middle part of the transverse wall 4b, so that when erecting the container (bottom forming and sealing), as will be described later, the closure panels 2 and 2 'do not adhere to packaged products but only at the legs 5 a '- 6 a ' first since they participate in the formation of the bottom, and 5 a and 6 a when closing the finished and filled container.

As with the previous embodiment, the blank 04 is folded back on itself and the tongue 5 c folded along the fold line 5 d is glued to the inner face of the transverse wall 4 b folded on it, this which closes the perimeter of the blank on itself and creates the blank in Figure 55.

Figure 57 helps to understand the mounting and closing of the container:

As already described with reference to FIGS. 49 and 50, the blank is placed in volume by unfolding it until its perimeter forms a rectangle. After removing the protective tape 34 below, is rectified by the first flaps 5 a and 6 a ', then the lower closure panel 2' which is fixed by the adhesive 12 that carries the legs 5a 'and 6 a ', then the panel 7 ', which is fixed by the adhesive 12 which it carries outside the panel 2'. The legs 8 'and 9' are then straightened and applied to the outer faces of the side walls 5 and 6, so that the container is put and maintained in its final shape and has a fixed and stable bottom.

The user can then easily place the objects to be packaged in the container by using both hands.

The closure is obtained as already described with the previous embodiment, namely that the legs 5 a and 6 a are folded down, then the closure panel 2, then the panel 7 and the fixing of the legs 8 and 9 outside the side walls 5 and 6.

It is understood that the interruptions lower 80 'and upper 80 are located between the free edges of the tabs 5 a ' - 6 a 'and 5 a - 6 a , in front of the wrapped objects so that they are not in contact with adhesive 12.

Adhesive 12 is nevertheless provided on the panels 2 and 2 'so that they attach to the legs 5 a - 6 a and 5 a ' - 6 a 'by constituting an assembly which can no longer dissociate and which allows therefore easy handling until the final fixing of each of these two sets [2 - 5a - 6a] and [2 '- 5a' - 6a '] by the strip 7 - 7' and the legs 8 - 8 'and 9 - 9 '.

The finished container is either edged, as in Figure 58, or flat as in Figure 59.

It is a container of the “American box” type kept in volume and closed by the only adhesive 12, that is to say without the addition of glue, staples or adhesive tape outside.

As expressed at the beginning of the description, a container in accordance with the invention can have a background of any type. Thus, the embodiments of FIGS. 48 to 53 on the one hand and 54 to 59 on the other hand, illustrate a container respectively automatic and a background specific to the invention.

Referring now to Figures 60 to 63, we see another embodiment which shows a container in accordance with the invention, of the family of American cases, having a standard, banal, and typical background of current American cases.

The same elements as those already described have the same references and when it comes to of a container of the same kind as those of FIGS. 48 to 53 and 54 to 59, we will not describe not again what has already been explained above.

On the blank 05 of FIG. 60, it can be seen that the side walls of the container 5, 4 a , 6 and 4 b each have a rectangular tab, respectively 81, 82, 83 and 84 having the same width as the wall of which it is integral and individualized by a single fold line 85 extending from one edge to the other of the blank 05 and by cut lines perpendicular to this fold line 85.

To form the bottom, one acts as is well known in practice: after having put the blank in volume by unfolding it until its perimeter forms a rectangle, we first fold the legs 81 and 83, then the legs 82 and 84 over the previous ones, then an adhesive tape of any known type 86 is applied, one end of which is seen on the Figures 61, 62 and 63, which joins the two free edges facing each other of the legs 82 and 84.

The user then has an American cash register with a banal background and can freely dispose of the objects to be wrapped using both hands since the container is in volume and stable.

• il retire le ruban de protection 34,
• il rabat les pattes 5a et 6a,
• il rabat le panneau de fermeture 2 par-dessus les pattes 5a et 6a,
• il rabat le bandeau 7 sur le panneau de fermeture 2 auquel ledit panneau 7 se fixe par l'adhésif 12,
• il applique les pattes 8 et 9 sur les parois latérales 5 et 6 auxquelles elles se fixent par l'adhésif 12.

After the objects have been introduced into the box, it closes it in the same way as that described with regard to Figure 52:

• he removes the protective tape 34,
• it folds the legs 5 a and 6 a ,
• it folds the closure panel 2 over the legs 5 a and 6 a ,
• it folds the strip 7 over the closure panel 2 to which said panel 7 is fixed by the adhesive 12,
• it applies the tabs 8 and 9 to the side walls 5 and 6 to which they are fixed by the adhesive 12.

The finished container is shown in Figure 62.

An American box according to the invention, as just described, can be produced according to two different variants, namely at constant volume or at volume adjustable.

To this end, the blank 05 has parallel rowing lines 87 which extend from one edge to the other of the blank 05, so that after constitution of the blank (similar to those of FIGS. 49 and 55 ), these lines 87 are found on the four interior faces of the walls 5, 4 a , 6 and 4 b (FIG. 61).

When the packaged products A extend over a height much lower than that of the container, as shown in Figure 61, the user can use a cutting tool B to create slots along the four fold lines that separate the walls 5, 4 a , 6 and 4 b to allow them to bend substantially at the same level as that of objects A, according to that of lines 87 which is closest to this level.

We start by folding down the legs 5 a and 6 a which may or may not overlap, depending on the height at which the side walls 5 and 6 fold. In fact, what is thus folded down is formed by the legs 5 a and 6 a , and through the upper part of walls 5 and 6.

Then fold the closure panel 2 and the upper part of the wall 4 b and, so that the folded length is not greater than the width of the container, this panel 2 is given a minimum width ℓ , that is to say - say the one that is just necessary for its maintenance by the strip 7 folded over it when the size of the American box is as large as possible with a given blank.

Finally, the strip 7 is folded over the panel 2 and in doing so the wall 4 a substantially folds at the legs 5 a - 6 a and the panel 2 already folded towards the inside of the container, and the free edge of the strip 7 is located beyond the outline of the closed box. Consequently, the strip 7 is folded forming an external edge 88, and is applied against the wall 4 b to which it is fixed by the unmasked adhesive 12. The closing of the box is completed by folding and fixing the legs 8 and 9 against the walls 5 and 6, as shown in FIG. 63.

The two boxes in Figures 62 and 63 are from the same blank from the same blank 05 and their height is different because the box of figure 62 is either at height fixed, either at adjustable height but here presents the maximum possible volume, while the box in Figure 63 is height adjustable and has the minimum volume here possible.

Of course, a container according to the invention can receive a tear strip in view of its opening by tearing in line and this tear strip can be differently located depending on the embodiment chosen.

The invention applies particularly well to containers intended for shipments by by post or by courier, since the closure of these containers can be obtained from simple, effective and tamper-proof manner with means built into the container itself (adhesive 12 and protective tape 34).

Claims (19)

Blank made of cardboard or similar material, having cutting lines and rowing lines inside a perimeter cut from a plate and thus subdivided into elements some of which are optionally glued flat against each other, said blank being intended to be delivered and stored flat, then to be subsequently folded, placed in volume, and kept folded, thus constituting a container for objects to be packaged, the volume setting of the blank and the arrangement of the objects to be carried out manually and individually for each blank, characterized in that among the various elements of the blank, there is at least one strip in a single thickness (7, 15-16) secured to at least one tab (8 - 9) also in a single thickness located in the extension of one end of said strip (7, 15-16), so that after volume setting of the blank and constitution of the container, the strip (7, 15-16) can be applied against the outer face of a wall ( 4b , 44, 2, 5 - 6) of said container, and each leg (8 - 9) can be folded down and applied against the outer face of a wall (5 - 6 - 7) , adjacent to said wall ( 4b , 44, 2), the volume container having to be kept in shape and closed irreversibly, and therefore tamper-proof, by means of an adhesive (12) placed between the strip (7, 15 -16) and has or its lugs (8 and 9) on the one hand and the adjacent walls (4b from -44 to 2, 5 and 6) on the other. Blank according to claim 1, characterized in that the strip (7) is integral with two end tabs (8 and 9), and after the volume and constitution of the container the strip (7) is applied against the outer face d 'a transverse wall ( 4b , 44, 2) of said container, and the two tabs (8 and 9) are folded down and applied to the outside of two side walls (5 and 6) adjacent to the transverse wall ( 4b , 44, 2). Blank according to claim 2, characterized in that so-called "lining" panels (15 and 16) are interposed between the side walls (5 and 6) and the folded tabs (8 and 9). Blank according to claim 1, characterized in that the container comprises a cover (2) which is secured to two so-called "lining" panels (15 and 16) each constituting a strip secured to a tab (8 - 9), and to be folded and applied directly against the outer face of the side walls (5 and 6), the legs (8 and 9) to be folded and folded against the same panel (7) integral with said cover (2) and to be placed against a transverse wall (4 b ) of the container. Blank according to claim 1, characterized in that the adhesive (12) has a prolonged effect and is covered, before use, by a removable protective tape (34). Blank according to claim 5, characterized in that the long-acting adhesive (12) is applied to the strip (7) and to the two tabs (8 and 9). Blank according to Claim 5, characterized in that the long-acting adhesive (12) is applied to the adjacent walls (4b from -44 to 2, 5 and 6). Blank according to claim 1, characterized in that at least one of the elements (7, 151-152) is integral with a tongue (75, 153-163) called "safety" intended to be folded and engaged by force in a slot (76, 502-602) provided in one of the elements (4b, 5-6) of the blank. Blank according to claim 1, characterized in that the strip (7) is integral with a panel (2) similar to the bottom, or base, (3) and which carries two lining panels (15 and 16, 151 and 161) intended to be placed by folding opposite side walls (5 and 6) of the container. Blank according to claim 1, characterized in that the lining panels (53 and 54) must be placed inside the side walls (5 and 6) of the container, the strip (7) having to be applied and fixed against the face exterior of a wall (44) of the transverse container and adjacent to said two side walls (5 and 6) and the tabs (8 and 9) to be applied and fixed against the outer face of said side walls (5 and 6). Blank according to claim 9, characterized in that the lining panels (15 and 16, 151 and 161) must be placed outside the side walls (5 and 6) of the container, the strip (7) having to be applied and fixed against the outside face of a wall of the transverse container ( 4b ) and adjacent to said two side walls (5 and 6) and the tabs (8 and 9) to be applied and fixed against the outside face of the lining panels ( 15 and 16, 151 and 161). Blank according to claim 1, characterized in that the strip (7) is integral with a tongue (75) called "safety" intended to be folded and forcibly engaged in a slot (76) formed in one of the elements (4 b ) of the blank. Blank according to claim 1, having, in a manner known per se, on the one hand elements glued together to close the perimeter of said blank folded back on itself and flattened by folding deforming in parallelogram on four sides to constitute four walls of a parallelepiped container, one of which is integral with a closure panel which must be plumb with a bottom, characterized in that the strip (7) must be folded over the closure panel (2), the strip (7) to be applied and fixed against the outside face of said closure panel (2) and the tabs (8 and 9) to be folded down and fixed against the outside face of two opposite walls (5 and 6) adjacent to the wall ( 4 b ) of which the closure panel (2) is integral. Blank according to Claim 13, characterized in that the elements of the blank to constitute the two opposite walls (5 and 6) adjacent the wall (4 b) of which the closure panel (2) is secured to each have a tab (5a -6 a ) determined by a crease line. Blank according to claim 13, characterized in that the bottom consists of several precut elements (3 a , 3 c and 3 d ) integral with the walls (4 a , 4 b , 5 and 6) and having to cooperate with each other by interpenetration, such as a so-called “automatic” background or a so-called “semi-automatic” background, possibly supplemented by a covering panel ( 3b ). Blank according to claim 13, characterized in that the bottom consists of two opposite legs (5 a 'and 6 a ') integral with two opposite walls (5 and 6), a panel (2 ') integral with a wall ( 4 b ) and a strip (7 ') integral with a wall (4 a ) and provided with two end tabs (8' and 9 '), said strip (7') and the end tabs (8 ' and 9 ') being provided with long-acting adhesive (12) covered with a removable protective tape (34). Blank according to claim 16, characterized in that the wall (4 b ) opposite to that of which the strip (7 ') is integral has two lines of adhesive (12) located near the free edges of said wall (4 b ) and each composed of two segments separated by an interruption (80). Blank according to claim 13, characterized in that the bottom consists of four rectangular legs (81, 82, 83 and 84) having the same width as the wall of which they are integral, intended to be folded and held by fixing means exteriors, in particular by adhesive tape. Blank according to claim 13, characterized in that the inner face of the four walls (5, 4 a , 6 and 4 b ) carries parallel rowing lines (87) according to one of which these walls can be folded according to the height occupied by the objects to be packaged (A) to be placed in the container obtained by setting up the blank.

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