FR2795390A1 - Set of blanks for construction of folding crate form tray and lid and crate has transverse side wall which may be manually torn from remainder of crate - Google Patents

Abstract

The crate (1) consists of a rectangular tray (2) whose sides (15) may be overlapped by the sides (10) of the lid (3). The ends (6) of the lid may overlap the ends (5) of the trays. The top of the lid maybe formed by folding flaps. A portion (4) of the end wall may be torn away by the user when opening the crate. There are pre-cut portions and gluing points (16,17) on the side walls. The crate may be made of plain or corrugated cardboard.

Description

The present invention relates to a crate for packing the carton and to the carton. type comprising two elements manually separable from each other and inserted into one another, respectively formed from blanks made of corrugated cardboard or sheet material belonging to said assembly, the first element forming a tray, the second element forming an upper part of the body that can be removed so as to give access to the products contained in the box.

It also relates to a set of blanks to obtain such a packing box.

The present invention finds a particularly important, although not exclusive, application in the field of packaging for rigid products such as cylindrical jars, making it easy to present the products outside their transport packaging in an immediate, clean and attractive manner, especially on the shelves of department store shelves.

Already known (EP 0 637 548) packing cases of the type described above allowing a quick disconnection of the upper part of the box relative to the lower part.

Such a case, however, has the disadvantage of not allowing to easily remove, with simple movements and a single block, all the products of the package.

The present invention aims to provide a box and a set of cuts better than those previously known to the requirements of the practice including allowing the complete removal of the tray and the upper part of the package, which allows to quickly and completely eliminate the packaging of products and thus allows an impeccable presentation in gondola in stores.

The body is moreover mountable in automatic at a high rate (greater than twenty cases / min), while presenting a great solidity and a rate of malformed crates almost zero, the boxes thus obtained by the invention being moreover easily stackable on pallets.

For this purpose, the present invention proposes in particular a two-part packing case comprising two blanks made of cardboard or corrugated cardboard material, namely a first blank forming a tray and a second blank forming an upper part of the box nested with said tray, the first cut and second cut being connected by means allowing their separation constituted by at least one pre-cut flap portion in one of said cutouts, characterized in that the box has a first transverse side wall formed by two flaps respectively belonging to each cutout arranged to be grasped by a user and connected to the rest of the box by partially precut junction lines allowing manual tearing by the user of said first wall relative to the rest of the box. Advantageously, each cut comprises a sequence of four main shutters terminated by a fastening tongue, said main flaps and said tongue being connected to each other via first fold lines parallel to each other, directly or via shutters. secondary, and a set of first side flaps arranged on one side of said sequence of main flaps and connected thereto by second fold lines perpendicular to said first fold lines and intended to form at least partially for one the bottom of the tray and for the other the top of the upper part of the box.

Advantageously, the pre-cut portion or portions are replaced by one or more bonding points allowing separation between flaps or walls by manual separation obtained by exerting a force perpendicular to the walls.

Per pre-cut or partially pre-cut portion is meant a frangible portion which holds only by a few points or attachment parts with the rest of the cut and which is therefore easily detached from the cut, by traction perpendicular to the plane of said cut.

The pre-cut portion or portions and / or the bonding point or points are arranged to have a good resistance in the vertical direction, that is to say as long as the forces are exerted essentially in the plane of the walls.

This resistance is particularly perfectly sufficient to allow the transport of products even if the package is grasped by the lid.

If, on the other hand, the separation force exerted between the walls is positively perpendicular to the walls, they then easily separate manually without delamination of the carton, for example with a force of the order of 5 to 10 Newtons, advantageously by example after passing a hard point requiring an extra effort of a few Newtons from the user, using for example his thumb as a foil and / or lever to pass this hard point.

In addition, it should be noted that, as long as the first side wall of the body is not torn manually by the user, the tray and the lid retain their rigidity, which does not allow spacing or yawning between tray and lid, furthermore advantageously still prevented by the hard point mentioned above. Advantageously, the first transverse lateral wall is formed by gluing one of the other two first side walls, respectively of the lid and the tray.

The first side walls of the tray and lid, which are here fixed together by a conventional solid bonding, for example by strips of hot melt glue, also ensure good rigidity of the body, without possibility of separation, if it is by delamination of the cardboard.

Adhesive bonding, such as partially pre-cut portions that easily tear from the rest of the cut to which they initially belong excludes delamination.

To be entered manually, the first transverse lateral wall of the box comprises or is for example integral with gripping means.

According to the embodiment of the invention more particularly described here these gripping means and the partially precut junction lines of the first transverse side wall are in particular provided to allow tearing of said first side wall of the box by a user by releasing especially the feet of the products.

The partially precut junction lines of the first side wall with the rest of the package are advantageously coincident with the edges of the body, between walls, bottom and cover.

 Also advantageously only the partially pre-cut junction line of the first transverse side wall of the box with the bottom coincides with the corresponding edge and / or only the partially precut junction lines with the adjacent side walls of the first side wall coincide with the corresponding edges.

The user, who can grasp, for example, the side wall to be torn off, has a greater pulling force than the spreading force in order to separate the partially pre-cut portions, for example a pulling force of one to four. kilograms.

Advantageously, the partially pre-cut junction lines are initially, or later, cut to present a first hard point, due to a greater length of the cut portions of cardboard, then a more fragile part with longer pre-cut parts, possibly consolidated by a or two additional intermediate hard points, and ending for example with an easier to tear part.

The splitting of the tearing forces thus makes it possible to better guarantee the non-separation of the first lateral wall in the event of lateral shocks and / or unforeseen forces exerted on the body. Such arrangements also allow, after tearing of the first wall of the package and splitting the bonding points or portions partially pre-cut, for example also connected to the rest of the cut that carries them by precut lines with one or more hard points , remove the tray without the products while the user holds the lid in place on the products, then remove the lid of the products, for example by lifting slightly and / or sliding horizontally along the products.

In advantageous embodiments, one and / or the other of the following arrangements is also used: - the pre-cut upper junction line of the first side wall of the box with the cover is located on the lid; - The pre-cut upper junction line of the first side wall of the body coincides with the upper edge of the body, or - the pre-cut portion or portions are cut along a closed line; - The pre-cut portion or portions are cut along an open line.

Such an arrangement facilitates the lateral separation between first and second elements during tearing of said pre-cut portion perpendicular to the plane of, and with respect to, the outer flap; the fastening tab of the second element extends along only a portion of the lateral edge of the adjacent flap to which it is connected, above the fastening tab of the first element; the main shutters are separated from each other by secondary shutters to form an eight-sided box with cut corners.

The present invention also proposes a set of blanks for packing cases, comprising two elements that are manually separable from each other and arranged to be inserted into one another, respectively formed from blanks made of sheet material. cardboard or corrugated cardboard, namely a first cut proper to form a display tray and a second cut to own the upper part of the box, each element comprising a sequence of four main components terminated by a fastening tab, said main shutters and said tongue being connected to each other via first folding lines parallel to each other, directly or through secondary flaps, and a set of first side flaps arranged on one side of said series of main flaps and connected to it by second fold lines perpendicular to said first lines of Folding and intended to form at least partially for one the bottom of the first tray member and for the other the top of the second element, the two elements being arranged to be interconnected by at least one pre-cut shutter portion in one of said main flaps of the first element, said outer flap, said portion being fixed to the corresponding main flap opposite the second element, said inner flap, characterized in that a transverse flap of the first blank, and a transverse flap of the second cut are connected to the flap and adjacent flaps corresponding by junction lines precut.

In advantageous embodiments, the various arrangements described above are furthermore used with reference to the body according to the invention.

The present invention will be better understood on reading the following description of embodiments given as non-limiting examples.

The description refers to the drawings which accompany it, in which - Figure 1 is a perspective view of an embodiment of a set of blanks according to the invention to four parts before assembly.

- Figure 2 is a perspective view of the box, lid and open bottom obtained with the cutouts of Figure 1.

FIG. 3 is a perspective view of FIG. 2 according to the invention, after bonding. - Figure 4 shows the box of Figure 3 during the various stages of its opening.

FIG. 5 shows the two blanks according to another embodiment of the eight-sided invention.

FIG. 6 is the packing box obtained with the cutouts of FIG.

Figures 1, 2, 3 and 4 show an assembly 1, or different elements of an assembly, of blanks sheets of double-sided corrugated cardboard, for example 2 mm thick.

For these figures, the same reference numbers will be used to designate the body elements and / or identical cuts or occupying the same position.

This set 1 comprises a first cut 2 proper to form the tray and a second cutout 3 adapted to form the lid of the box.

The second cut is superimposed, flat, the first cut, and suitable to form an internal belt of the body, once it formed.

The first cutout 2 comprises a series of four shutters, namely two so-called lateral shutters 4 and 4 'arranged alternately with two so-called facial flaps 4 "and 41', the shutters being interconnected by first folding lines 5 and 5. parallel to each other and shown in phantom in Figure 1, the flap sequence being adapted to form the outer walls of the tray 4 to four sides (Figure 3).

More precisely, the flaps 4 and 4 'are of trapezoidal rectangle shape.

They are symmetrical with respect to the rectangular facial flap 41, which forms the rear face of the tray and which is taller than the rectangular facial flap 4 '"which forms the front face of the tray.

The fold line 5 'between the flaps 4 and 4 "' is pre-cut, as is the fold line 5 'between the gluing tongue 4a and the adjacent flap 4', which will allow tearing of the first wall.

In another embodiment, the fold lines 5 between the shutter 4 '' and the shutters 4 and 4 'are pre-cut, that is to say with cut portions adjoining with attachment points, in which case it is the back side that is planned tear-off.

The flaps 4 and 4 'have meanwhile an upper peripheral edge 7 and 7' downwardly biased, directed in the opposite direction of the flap 4 ''.

The tongue 4a is rectangular, and extends over the entire height of the short side.

The flap suite 4, 41, 411, 4111 is also provided on its lower side, a first suite 8 of rectangular flaps, via second fold lines 9 and 9 '. The flaps 8 are intended to form the bottom 8 '(see Figure 2) of the tray, in known manner, two of said flaps coming for example in contact with their outer edge to form a sealed bottom.

The fold line 9 'between the shutter 4 "' and the corresponding flap is pre-cut.

The second cutout 3 has four rectangular flaps, which will be referred to below as panels to better differentiate them from the flaps of the first blank.

This is a first central rectangular panel 10 and three secondary rectangular panels 11, 12 and 13, interconnected by third fold lines 14 and 14 ', namely two panels 12 and 13 connected on both sides. other to the central panel 10 and an end panel connected to the other side of the panel 12 by a pre-cut fold line 14 '.

The blank 3 comprises a second flap continuation, identical to the first flap continuation 8, connected to the adjacent panels by fifth fold lines 16 and 16 ', perpendicular to the first lines 14, and intended to form the lid 15' of the box, the junction fold line 16 'of the panel 11 with its flap being pre-cut.

An end tongue 13a is also provided, connected to the end panel 13 on only a portion of the height of the latter, located on the side of the fold lines 16, by a pre-cut fold line 14 '.

The tongue 13a is placed on the same side as the tongue 4a, and its length is for example equal to the height of the panel 13, less a length equal to or slightly greater than the length of the tongue 4a.

The tongues 4a and 13a are also provided and arranged to close on the walls facing the cutouts formed, without overlapping each other although they are on the same side (see FIG. 2), and for be peelable according to the invention.

Advantageously, the fold lines 14, 14 'and 5, 5' of the two blanks are parallel and offset, arranged to catch the extra thicknesses of cardboard during folding.

The tray also comprises two pre-cut portions, for example oval, in closed lines 20 and 21, located entirely at a distance from the edge 7, 7 'of the flaps 4, 4'.

Referring to Figures 3 and 4 the tray thus comprises a first set of flaps 8 forming the bottom, connected to the corresponding flaps by fold lines 9 and 9 ', the latter being pre-cut.

Similarly, the second blank 3 comprises four rectangular flaps 19 connected to the corresponding panels by fold lines 16, one 16 'is precut. A gripping port 22 is provided at the fold line with the central panel, which allows, when the crate is closed and glued, to catch the wall and tear the entire front face of the the box according to arrow 23.

The tray, for example that can be caught on the other side by the handle 24 (obviously), will then be removed as described above, then the upper part, which can be grasped by the lower flap portion of the other side of the first tear-off game.

The horizontal glue lines are shown in FIGS. 3 and 4, the flap 4 '"being glued to the vertical panel 11.

The pre-cut portions 20 are in turn provided towards the center of the tray, which prevents yawning in the absence of side flaps that usually hold the tray in the correct position.

The portions 20 may also advantageously be in open lines.

FIG. 5 shows an eight-sided box 30 according to one embodiment of the invention comprising a first element 31 forming a tray and a second element 32 forming the upper part of the box, the flaps 33 of which are open to allow the filling of the crate formed. This is, according to the embodiment of the invention described here, rigid and non-collapsible once the tabs glued on the walls facing each other, and comprises pre-cut folding lines 34, 35, 36, 37 allowing tearing of the face 38 with cut corners.

A recess 39 is for example provided on both sides in the panels of the second element 32, at and slightly above the upper part of the tray, which facilitates the extraction of said second element, after disconnection from the in relation to the first element.

FIG. 6 shows an embodiment of the first cutout 41 and the second cutout 42 of an assembly according to the invention making it possible to obtain an eight-sided box of the type of that appearing in FIG. 5.

The first blank 41 comprises a series of eight flaps 43 and a rectangular gluing tab 44, the flaps and the tongue being interconnected by parallel folding lines 45 and 45 'to each other, namely four main flaps 46, 47, 48 and 49, and four intermediate flaps 50, 51, 52 and 53. The main flaps 46, 47, 48 and 49 are each connected by second fold lines 54 and 54 'to a series of flaps 55, said second fold lines being perpendicular to the first fold lines. Each pair of flaps is substantially rectangular in shape and has its two lateral sides at least partially angled outwardly of said flap from the second fold lines, said second fold lines 54, 54 'being substantially aligned or aligned with each other. with each other. The other two flaps are rectangular.

More specifically, the main flaps are constituted by two rectangular flaps namely a first rectangular small flap 47, central, and a second rectangular flap 49, located on the side of one end, and two main flaps of substantially trapezoidal rectangular shape namely a first flap 46 and a second flap 48 both symmetrical relative to the small flap 47 and having an oblique side 46 ', respectively 48', directed outwards and upwards from the small rectangular flap 47.

The main flaps are separated by rectangular or substantially rectangular secondary flaps, as indicated above, said secondary flaps being devoid of flaps.

According to the embodiment of the invention more particularly described here, the main flap 46 has a detachable portion 56 extended or not, by a recess 57 to make up the extra thicknesses during the formation of the tray around the upper element of the box, upper element corresponding to the second cut 42.

The flap 48 also has a detachable portion 56 ', but which in this embodiment is not necessarily extended recess.

The intermediate flaps 50 and 51 are connected to the adjacent main flaps 46 and 48 by pre-cut fold lines 45 'and the rectangular flap connected to the flap 54 by a pre-cut fold line 54'. The cutout 42 comprises a series of eight rectangular flaps 60, 61, 62, 63, 64, 65, 66 and 67 terminated by a rectangular fastening tab 68. The flaps are connected to each other and to the tongue by third lines. folding 69 parallel to each other.

More specifically, they consist of four main flaps 60, 62, 64, 66, separated two by two by three secondary flaps 61, 63, 65, the last flap 66 is also provided with an end flap 67, disposed at the end of the flap suite when the flaps are flat and connected with the rectangular tab 68 on which it is glued when the box is formed.

The tongue 68 is located on the side of the folding line 71, relative to the flap 60, its upper edge 71 'being in the extension of said fold lines 71.

The tongue 68 extends over a height for example arranged to not cover the tongue 44 when the cuts are assembled. It is for example equal to half the height of the flap 60, the tongue 44 being of height a little smaller than this dimension.

In the same way as for the cutout 41, the cutout 42 comprises, located on the other side with respect to the continuation 55, a succession of flaps 70 connected to the principal shutters by fourth fold lines 71, 71 'perpendicular to the thirds. folding lines 69.

This series of flaps is for example identical to the following flaps 55 described with reference to the blank 41.

In the embodiment described here, the detachable wall is constituted by the set of flaps 61, 62, 63 for the second cut and the set of flaps 50, 47, 51 for the first cut.

These two sets are fixed to each other by gluing and are connected to the adjacent main flaps and the flap by pre-cut fold lines 45 'or 69', and 54 'or 71'.

Moreover, the fold lines 45 of the first blank are advantageously provided and placed progressively offset on the opposite side to the flap 64 relative to the fold lines 69 of the second blank to make up the extra thicknesses.

Offset calculations are done in a known way, adapting them to the eight-part case.

The portions 56 and 56 'and the flap 47 are fixed by gluing (for example "hot melt") on the flaps 60 and 64 and 62 of the second cut opposite.

When the box is formed the tab 44 is glued to the flap 53, the tongue 68 on the outside of the flap 67, and the flaps 55 together.

Claims (15)

A two-piece packing case comprising two blanks made of cardboard sheet or corrugated material, namely a first blank (2; 41) forming a tray (6; 31) and a second blank (3; an upper part (15 '; 32) of. the box nested with said tray, the first and second blanks being connected by means allowing their separation comprising at least one pre-cut flap portion (20; 56, 56 ') in one of said blanks, characterized in that the box comprises a first transverse side wall (11; 38) formed by two flaps respectively belonging to each cutout, arranged to be grasped by a user and connected to the rest of the box by junction lines (9 ', 5', 14 ', 16'; 34, 35, 36, 37) partially precut allowing manual tearing by the user of said first wall relative to the rest of the body. 2. Case according to claim 1, characterized in that the pre-cut upper junction line (16 ', 37) of the first side wall of the box with the lid is located on the lid. 3. Case according to claim 2, characterized in that the pre-cut upper junction line of the first side wall of the box coincides with the upper edge of the box. 4. Box according to any one of the preceding claims, characterized in that the pre-cut flap portion or portions (20; 56, 56 ') are cut along a closed line. 5. Case according to any one of claims 1 to 3, characterized in that the one or more pre-cut flap portions are cut. according to an open line. 6. Box according to any one of the preceding claims, characterized in that each cutout comprises a series of four main flaps (4, 4 ', 411, 4 "'; 10, 11, 12, 13; 46, 47, 48). 49, 60, 62, 64, 66) terminated by a fastening tab (40; 30; 53; 68), said main flaps and said tongue being connected to each other via first fold lines (5, 5 '). 14, 14 '; 45, 45'; 69, 69 ') parallel to each other, directly or through secondary flaps (50, 51, 52, 53; 61, 63, 65, 67), and an assembly (8, 15; 55, 70) of first side flaps arranged on one side of said sequence of main flaps and connected thereto by second fold lines (9, 9 '; 16, 16'; 54 , 54 ', 71, 71') perpendicular to said first fold lines and intended to form at least partially for one the bottom of the tray and for the other the top of the upper part of the box e. 7. Case according to claim 6, characterized in that the fastening tongue (13a, 68) of the second element extends along only part of the lateral edge of the adjacent flap to which it is connected, above the tongue fixing the first element. 8. Box according to any one of. preceding claims, characterized in that the main flaps (46, 47, 48, 49; 60, 62, 64, 66) are separated from each other by secondary flaps (50, 51, 52, 53; 61, 63, 65, 67) to form an eight-sided box with cut corners. 9. Set (1) of blanks for packing case, comprising two elements separable manually from one another and inserted into one another, respectively formed from blanks made of cardboard or cardboard sheet material corrugated, namely a first cut (2; 41) adapted to form a display tray and a second cutout (3; 42) adapted to form the upper part of the box, each element comprising a series of four main components (4, 41 , 4 ", 4" '; 10, 11, 12, 13, 43; 60, 62, 64, 66) terminated by a fastening tongue (4a, 13a), said main flaps and said tongue being connected to each other. other via first fold lines (5, 5 ', 14, 14', 45, 45 ', 69, 69') parallel to one another, directly or through secondary flaps (50, 51, 52, 63, 61, 63, 65, 67), and an assembly (8, 15; 55, 70) of first side flaps disposed on one side of said flight sequence. ands and connected thereto by second fold lines (9, 9 '; 16, 16 '; 54, 54 '; 71, 71 ') perpendicular to said first fold lines and for forming at least partially for one the bottom of the first forming element. tray and for the other the top of the second element, the two elements being arranged to be interconnected by at least one portion (20; 56, 56 ') of pre-cut flap in one of said main components of the first element, said outer flap (4; 46, 48), said portion being fixed to the corresponding main flap opposite the second element, said inner flap, characterized in that a transverse flap (4111) of the first cut, and a transverse flap (11) of the second blank are connected to the corresponding flap and flaps by precut junction lines (9 ', 5', 14 ', 16', 54 ', 45', 69 ', <B> 711). </ B > 10. Set of blanks according to claim 9, characterized in that the precut upper junction line of the first side wall of the box with the lid is located on the lid. 11. Set of blanks according to claim 10, characterized in that the pre-cut upper junction line of the first side wall of the box coincides with the upper edge of the box once formed. 12. Set of blanks according to any one of claims 9 to 11, characterized in that the or portions of flap (20; 56, 56 ') precut are cut along a closed line. 13. Set of blanks according to any one. Claims 9 to 11, characterized in that the pre-cut flap portion or portions are cut in an open line. 14. Cutting assembly according to any one of claims 9 to 13, characterized in that the fastening tongue (13a, 68) of the second element extends along only part of the lateral edge of the adjacent flap to which it is connected above the fastening tab of the first element. 15. Cutting assembly according to any one of claims 9 to 14, characterized in that the main flaps (46, 47, 48, 49; 60, 62, 64, 66) are separated from each other by secondary flaps (50 , 51, 52, 53; 61, 63, 65, 67) to form an eight-sided, corner-cut box.