FR2815939A1 - Blank for forming carton has rectangular base, to which trapezoidal side walls and rectangular end walls are attached, larger of end walls having trapezoidal flaps, allowing carton to be assembled into wedge shape - Google Patents

Abstract

The blank for forming a carton has a rectangular base, to which trapezoidal side walls (8) and rectangular end walls (6, 7) are attached. The larger (7) of the end walls has trapezoidal flaps (26), allowing the carton to be assembled into a wedge shape. An Independent claim is included for a carton assembled from the blank

Description

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 Cardboard blank or similar material to constitute by volume folding a container forming a display, and container-display thus obtained The present invention relates to a container made of cardboard or similar material, in particular corrugated cardboard, which is obtained by setting the volume of a blank and which has two successive functions, namely on the one hand a packaging function for the grouping and protection of objects during their transport and storage and secondly a display function for which the objects must be inclined and easy access, in a self-service store.

It is understood that the manufacturing requirements require the finished container to have a parallelepipedal contour from rectilinear cuts and bends and orthogonal.

The objects themselves are moreover parallelepipedic and the internal dimensions of the container are established to enclose packaged objects as closely as possible, so that they are effectively maintained during transport and handling.

But the attractive and practical display function is often frustrated, or even made impossible by the shapes imposed by the packaging function.

The objects must be packed in a parallelepipedic group for transport, while they must be released and easily accessible for presentation.

These contradictory conditions lead manufacturers to design separate containers for transport and presentation, resulting in manufacturing and handling complications and, as a result, high costs.

The present invention overcomes these disadvantages by allowing a single container to have both functions combined, without any modification of the manufacturing methods.

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To this end, the subject of the invention is a blank made of cardboard or similar material cut, grooved and possibly printed, which has all the means for constituting a container flat, namely on the one hand a flat polygonal base and walls adjacent to the base to be subsequently rectified relative to said base to form a container body volume, characterized in that the blank has a quadrangular central portion determined by four orthogonal fold lines by which the central part of partly with two opposite rectangular panels, of the same width as the central part and of different heights, and secondly with two opposite trapezoidal panels of the same width as the central part and one end of which has a height substantially equal to that of one of the rectangular panels and whose other end has a height substantially equal to that of the other rectangular panel, this he of these rectangular panels which has the greatest height being secured by fold lines of two substantially trapezoidal lateral flaps, the volume blank to be a container.

chaque panneau de doublage possède deux languettes qui dépassent son bord libre opposé au bord incliné et qui correspondent à deux ouvertures situées dans le contour de la partie centrale, contre la ligne de pliage du panneau trapézoïdal correspondant ; > chaque volet latéral a un bord oblique qui s'étend depuis le bord libre du panneau rectangulaire de plus grande hauteur jusqu'à un bord libre. According to other features of this blank: the trapezoidal panels are secured according to their inclined side of a lining panel intended to be folded and applied against the corresponding trapezoidal panel;

each lining panel has two tabs which project beyond its free edge opposite the inclined edge and which correspond to two openings located in the contour of the central part, against the fold line of the corresponding trapezoidal panel; > Each lateral flap has an oblique edge that extends from the free edge of the rectangular panel of greater height to a free edge.

 the oblique edge of each lateral flap has two rectilinear segments angularly offset and connected to each other by a curved median segment.

  The invention also relates to a volume container obtained by folding a blank of cardboard or similar material cut, grooved and optionally printed, which has a flat polygonal base and walls perpendicular to the base, and thus forming a body optionally associated with an independent removable cover, characterized in that the base is integral with two transverse walls of unequal heights and two trapezoidal side walls whose upper edge is inclined, the transverse wall which has the greatest height being integral with two folded flaps parallel to the side walls and placed against them without any attachment to them.

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According to other characteristics of this container:> the side walls are each formed by two panels folded against each other, forming an inner wall and the other an outer wall between which there is a space in which is inserted a shutter lateral; > The folded panel which forms the inner wall has two tongues engaged in two openings in the contour of the base, in line with said inner wall; > each lateral flap has a substantially trapezoidal contour formed by two opposite parallel and unequal edges, the largest being constituted by a fold line connecting it to the transverse wall of greater height and the smallest being a free edge, and by two other free edges, one inferior parallel to the base and the other oblique; the oblique free edge of each lateral flap has two rectilinear segments angularly offset and connected to each other by a curved median segment.

The invention will be better understood from the detailed description given below with reference to the accompanying drawing. Of course, the description and the drawing are given only by way of indicative and nonlimiting example.

Figure 1 is a schematic view of a blank according to the invention as it is flat after cutting and creasing, ready to be delivered and stored.

Figure 2 is a partial schematic view showing a folding phase of the blank of Figure 1 to obtain a volume container.

Figure 3 is a schematic longitudinal sectional view of a vacuum container according to the invention, corresponding to the packaging function.

FIG. 4 is a partial schematic sectional view, showing the mounting of the rear wall of the container of FIG. 3.

Figure 5 is a schematic longitudinal sectional view of a empty container according to the invention, corresponding to the display function.

Figure 6 is a schematic longitudinal sectional view of a container according to the invention, loaded with objects to be packaged and associated with a styling lid.

Figure 7 is a schematic longitudinal sectional view of a container according to the invention, loaded with objects and ready to be placed in the display position.

Figure 8 is a schematic longitudinal sectional view of a container according to the invention, in the display position.

Referring to Figure 1, there is shown a blank according to the invention, that is to say a sheet of cardboard or similar material, cut and grooved to be brought into volume by folding and thus maintained by means of locking tabs to form a container.

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 The invention may therefore be either flat in the form of a blank, or in volume in the form of a container and it may be empty or lined with objects, in whole or in part.

The invention is particularly well suited to be embodied in corrugated cardboard corrugated more or less important, including those known as micro flutes.

The blank of FIG. 1 has a rectangular central part constituting a base 1 for articles to be packaged and delimited by four folding lines 2,3, 4 and 5 formed by a creasing for straightening out of the plane of the base 1 two panels Rectangular 6 and 7, and two trapezoidal panels 8 and 9.

With reference to the finished container, the rectangular panels 6 and 7 constitute transverse walls and the trapezoidal panels 8 and 9 constitute side walls.

The panel 6 has a height h less than that H of the panel 7, the trapezoidal panels 8 and 9 having edges whose height is respectively equal to h and H.

The panel 6 is secured to a doubling panel 12 which it holds by a double fold line 13. The trapezoidal panels 8 and 9 are also secured to doubling panels of the same contour respectively 16 and 18 to which they hold by double lines 14 and 15 respectively.

The three lining panels 12, 16 and 18 each have two tabs 20 aligned with openings 21 cut in the central portion 1, against the fold lines 2,4 and 5 so that after folding the lining panels 12,16 and 18 according to the lines 13. 14 and 15 against the corresponding panel 6.8 and 9, the tabs 20 penetrate and each lock in the opening 21 with which it is aligned.

Trapezoidal panels 8 and 9 are each integral with a tab respectively 22 and 23 to which they hold by fold lines respectively 24 and 25, these tabs 22 and 23 having a width 1 at most equal to the height h (Figure 2 ).

The panel 7 is secured to two lateral flaps 26 and 27 which it holds by fold lines 28 and 29.

The two flaps 26 and 27 are symmetrical and each have a free edge respectively 31 and 32 parallel to the fold lines 28 and 29, and the height is low, for reasons which will be explained later.

The flaps 26 and 27 each have a substantially oblique free edge respectively 33 and 34, which extends from the top of the free edge 31-32 to the outer free edge parallel to the fold line 3.

The oblique edge 33-34 of the two flaps 26 and 27 is formed of two rectilinear end segments 35 and 36 angularly offset and connected by a curved central segment 37.

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Pour monter un contenant à partir du flan de la figure 1, c'est-à-dire pour le mettre en volume, on agit de la manière suivante : on redresse les volets latéraux 26 et 27 à la perpendiculaire du panneau 7 selon les lignes
28 et 29, - on redresse les pattes 22 et 23 à la perpendiculaire des panneaux trapézoïdaux 8 et 9 selon les lignes 24 et 25, on redresse ces panneaux trapézoïdaux 8 et 9 contre les faces dites extérieures > des volets 26 et 27, ce qui amène les pattes 22 et 23 à l'aplomb de la ligne de pliage 2 ; - on redresse le panneau 6 contre la face dite extérieure des pattes 22 et 23 puis le panneau de doublage 12 par dessus les pattes 22 et 23, contre la face dite intérieure de ces mêmes pattes, selon la flèche FI (figure 2) jusqu'à ce que les languettes 20 pénètrent chacune dans une ouverture 21 et s'y bloque, on rabat les volets de doublage trapézoïdaux 16 et 18 par dessus les volets latéraux 26 et 27, contre leur face dite intérieure , selon la flèche F2 (figure 2) jusqu'à ce que les languettes 20 pénètrent chacune dans une ouverture 21 et s'y bloque.

To mount a container from the blank of FIG. 1, that is to say to make it in volume, one acts in the following way: the side flaps 26 and 27 are raised to the perpendicular of the panel 7 according to the lines
28 and 29, the flanges 22 and 23 are perpendicularly perpendicular to the trapezoidal panels 8 and 9 along the lines 24 and 25, these trapezoidal panels 8 and 9 are raised against the so-called outer faces of the flaps 26 and 27, which brings the tabs 22 and 23 to line with the fold line 2; the panel 6 is raised against the so-called outer face of the lugs 22 and 23 and then the lining panel 12 over the lugs 22 and 23, against the so-called inside face of these same lugs, according to the arrow F 1 (FIG. the tabs 20 each enter an opening 21 and locks thereon, the trapezoidal lining flaps 16 and 18 are folded over the lateral flaps 26 and 27, against their inner side, along the arrow F2 (FIG. ) until the tabs 20 each enter an opening 21 and hangs therein.

Thus, a container body having a base (or bottom) 1 and four orthogonal walls was formed. A small double thickness transverse wall is formed by the panels 6 and 12, two double-thickness trapezoidal side walls are formed by the panels 8 and 16 on the one hand and 9 and 18 on the other hand, and a single transverse wall formed by the panel 7 (Figure 3 and 4).

The walls 6-12, 8-16 and 9-18 are all integral because they can not be folded out by unfolding outwards, because the tabs 20 are locked in the openings 21 and the tabs 22 and 23 secured to the side walls abuts against the inside of the fold joining the panel 6 and its lining panel 12 if it exerts on the walls a force from the inside to the outside.

On the other hand, the panel 7 can be freely inclined outwards along the fold line 3, as indicated by the arrow F3 of FIG. 5, since the lateral flaps 26 and 27 are parallel to the side walls 8-16 and 9 -18 without any attachment to them since they are simply placed. without constraint, between the panels 8 and 16 on the one hand and 9 and 18 on the other hand.

In Figure 3, the container has no lid and consists of a kind of deep tray, rectangular parallelepiped shaped inclined sidewalls, and ready to receive objects to be packaged. that is to say setting volume to ensure its packaging function.

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 In FIG. 5, the panel 7 has been pulled outwards, the shutters 26 and 27 being partially extracted from the space that exists between the trapezoidal panels 8 and 9 on the one hand and their lining panels 16 and 18 on the other side. on the other hand, the container is thus brought to its display function, as is explained below with reference to FIG.

It can be observed that in the packaging function of the container, the flaps 26 and 27 are in the position of FIGS. 3 and 4, their lower free edge 30 being supported on the base 1, whereas the rectilinear segment 36 is parallel to the edge inclined panels trapezoidal 8-16 and 9-18, namely parallel to the upper fold formed by the double line 14.

In the display function of the container, the flaps 26 and 27 are in the position of Figure 5, their free edge 30 being raised obliquely, while the rectilinear segment 35 abuts against the inner face of the fold formed by the double line 14, that is to say applied parallel and against him, which absolutely prevents the panel 7 to tilt back beyond this predetermined position.

The rectilinear segments 35 and 36 correspond to a support against two angularly offset elements which are the base 1 on the one hand and the inside of the upper oblique fold on the other hand. The curved medial segment 37 allows the free pivoting of the panel 7, which would not be the case if the two rectilinear segments 35 and 36 join at a sharp angle because it would abut against the inside of the oblique fold greater than mid -parcours the panel 7, preventing it from reaching the predetermined position that it is desired to give it for the display function.

By giving to the arcuate segment 37 an arc of radius R centered on the fold line 3 (FIG. 5), it is ensured that no point on the free edges 33 and 34 will be able to oppose the free movement of the shutters 26 and 27, except of course, the rectilinear segments 35 and 36 which must lie against the inside of the oblique fold Having described the two extreme positions of the panel 7 and the lateral flaps 26 and 27, it is understood that if the inclination of the rectilinear edge 35 is strictly determined by its stop function (Figure 5), the length of the lower free edge 30 of the flaps 26 and 27 is limited by the same oblique upper fold. In other words. the straight edges 30 and 35 could compete in an acute summit.

But, then, the flaps 26 and 27 have a tip whose presence is undesirable because it would be a vulnerable and fragile element during the manufacture of the blank, during its handling for storage and transport.

This is why it is eliminated by creating a cutaway giving rise to the free edge 31, and the geometry of the blank is such that this free edge 31 has a length qualified as low since it turns out to be less than the height. h of the panel 6.

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 Referring now to Figures 6-8, there is shown the container according to the invention packed with packaged objects A, shown here as parallelepiped items such as books, compact disc cases, boxes, etc.

Naturally, the interior dimensions of the finished container in the situation of FIG. 3 are calculated to contain the objects A under the best possible conditions of maintenance, which is represented in FIGS. 6 and 7. It is noted in particular that the panel 7 has a height H very substantially equal to that of objects A.

To finish the container after having placed the objects A and make it suitable for transport, handling and storage, is placed a cover 40 which here is bell-type, that is to say, it fully covers the containing and objects A when in the fully closed position, which is that shown in dashed lines in FIG. 6.

In this position, the bottom 41 is otherwise applied to the top of the object group A, at least in the immediate vicinity, to prevent these objects from shuffling during transport and handling.

The four faces of the cover 40, only three of which are visible in FIG. 6: 42, 43 and 44, form a skirt which closely surrounds the outer faces of the four transverse walls, two transverse 7 and 6-12, and two lateral walls. 16 and 9-18. Note in Figure 6 that there is a large gap E between the first object Al of the right and the face 44 but in practice this space is virtually imperceptible because the wall 6-12 is much thinner than the one shown for obvious reasons for the clarity of the drawing.

In Figure 6, the cover 40 shown in solid lines is in an intermediate position, being withdrawn according to the arrows F4. This corresponds to the moment when the container must be shelved in a store, after having been mounted, lined with objects A, transported and stored.

In Figure 7, the cover 40 has been removed and removed, the objects A appear but the container is still in the packing position.

In FIG. 8, the container is in the display position, namely that the rear transverse panel 7 has been pulled outwards, which makes it possible for the objects A to tilt backwards to better present themselves to the customers. and to facilitate their grip, as schematized by a hand B.

Thanks to the blocking of the panel 7 in the rear tilt position by means of the side flaps 26 and 27 abutted by their rectilinear segments 35 (Figure 5), it is impossible for this panel accidentally exceeds the predetermined position, even if voluntary efforts or involuntary are exercised in this way.

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 Note that this position is reversible since after removal of the last object A, we can bring the panel 7 to return the container in the position of Figure 3, if only for reasons of ease of handling, but it is clear after use, the container can also be simply disposed of.

The above description has taken as an example a container whose walls 6-12,8-16 and 9-18 are double thickness, which is particularly well suited to the internal guidance of the side flaps 26 and 27.

However, it should be understood that this structure is only one possibility among others, especially if the container is made of a material other than corrugated or compact cardboard and does not come from the cutting of a flat blank, the important thing is to allow the pivoting of the flaps 26 and 27 to the outside and to ensure the blocking of the rear panel 7 in the display position.

Such means are expressly part of the present invention and, in practice, can be made in different ways directly from the described structure.

Claims (10)

 1. Cardboard blank or similar material cut, grooved and possibly printed, which has flat all means of forming a container, namely on the one hand a flat polygonal base and walls adjacent to the base to be subsequently rectified with respect to said base to form a container body in volume, characterized in that the blank has a quadrangular central portion (1) determined by four orthogonal folding lines (2,3, 4 and 5) by which the part central (1) holds on the one hand to two opposite rectangular panels (6 and 7), of the same width as the central part (1) and heights (H and H) different, and secondly to two opposite trapezoidal panels (8 and 9) of the same width as the central portion (1) and whose end has a height (h) substantially equal to that of one (6) of the rectangular panels (6 and 7) and whose other end has a height (H) substantially equal to this one of the other rectangular panel (7), the one (7) of these rectangular panels (6 and 7) which has the greatest height (H) being secured by folding lines (28 and 20) of two lateral flaps ( 26 and 27) substantially trapezoidal, the volume blank to be a container. 2. blank according to claim 1, characterized in that the trapezoidal panels (8 and 9) are integral according to their inclined side of a doubling panel (16-18) intended to be folded and applied against the trapezoidal panel (8- 9) corresponding. 3. blank according to claim 2, characterized in that each doubling panel (16-18) has two tabs (20) which extend beyond its free edge opposite the inclined edge and which correspond to two openings (21) located in the contour of the central part (1) against the fold line (4-5) of the corresponding trapezoidal panel (8-9). 4. blank according to claim 1, characterized in that each side flap (26-27) has an oblique edge (33-34) extending from the free edge of the rectangular panel (7) of greater height (H) to a free edge (31). 5. blank according to claim 4, characterized in that the oblique edge (33-34) of each side flap (26-27) has two rectilinear segments (35 and 36) angularly offset and connected to each other by a curved central segment ( 37). <Desc / Clms Page number 10> 6. Volume container obtained by folding a cardboard blank or similar material cut, grooved and optionally printed, which has a flat polygonal base and walls perpendicular to the base, and thus forming a body possibly associated with an independent removable cover , characterized in that the base (1) is integral with two transverse walls (6-12 and 7) of heights (h and H) unequal and two trapezoidal side walls (8-16 and 9-18) whose upper edge is inclined, the transverse wall (7) which has the greatest height (H) being integral with two flaps (26 and 27) folded parallel to the side walls (8-16 and 9-18) and placed against them without any fixing to them. 7. Container according to claim 6, characterized in that the side walls are each formed by two panels (8 and 16,9 and 18) folded against each other, forming an inner wall (16-18) and the another an outer wall (8-9) between which remains a space in which is inserted a side flap (26-27). 8. Container according to claim 7, characterized in that the folded panel (16-18) which forms the inner wall has two tabs (20) engaged in two openings (21) located in the contour of the base (1), to the plumb with said inner wall (16-18). 9. Container according to claim 7, characterized in that each side flap (26-27) has a substantially trapezoidal contour formed by two opposite edges parallel and unequal, the largest being constituted by a fold line (28-29) the connecting to the transverse wall (7) of greater height (H) and the smallest being a free edge (31-32), and by two other free edges, the lower one (30) parallel to the base (1) and the other oblique (33-34). Container according to claim 7, characterized in that the oblique free edge (33-34) of

 each lateral flap (26-27) has two rectilinear segments (35 and 36) angularly offset and connected to each other by a curved central segment (37).