EP0729428A1 - Crate made of sheet material and provided with a lockable lid, and blank for producing same - Google Patents

Crate made of sheet material and provided with a lockable lid, and blank for producing same

Info

Publication number
EP0729428A1
EP0729428A1 EP95902157A EP95902157A EP0729428A1 EP 0729428 A1 EP0729428 A1 EP 0729428A1 EP 95902157 A EP95902157 A EP 95902157A EP 95902157 A EP95902157 A EP 95902157A EP 0729428 A1 EP0729428 A1 EP 0729428A1
Authority
EP
European Patent Office
Prior art keywords
flaps
flap
tongue
fold lines
opposite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95902157A
Other languages
German (de)
French (fr)
Other versions
EP0729428B1 (en
Inventor
Jean-Claude Moreau
Guy Coalier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otor SA
Original Assignee
Otor SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otor SA filed Critical Otor SA
Publication of EP0729428A1 publication Critical patent/EP0729428A1/en
Application granted granted Critical
Publication of EP0729428B1 publication Critical patent/EP0729428B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/02—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
    • B65D5/10—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end closures formed by inward-folding of self-locking flaps hinged to tubular body

Definitions

  • the present invention relates to a box of material made of corrugated cardboard sheet or equivalent, having a polygonal section, of the type comprising lateral faces, a bottom and a cover comprising two opposite upper flaps and two opposite lower flaps situated below said upper flaps, said flaps being respectively connected to the lateral faces by fold lines, the cover comprising: two slots formed in the upper flaps, respectively on either side of the cover parallel and at a distance d. fold lines of the lower flaps, and two tabs cut respectively on one side in the lower flaps, and articulated respectively on the other side parallel to the fold lines of said lower flaps, covering said upper flaps respectively and arranged so that their ends penetrate respectively into the corresponding slots of the cover.
  • Locking systems are already known which make it possible to block a box cover, which then avoids these untimely deformations. These include locking by adhesive tape.
  • the invention proposes in particular a case of material made of corrugated cardboard sheet or equivalent having a polygonal section, said case being of the type mentioned above, characterized in that the end of each tab is in the shape of a point and is arranged to come into abutment from below with the edge peripheral of the corresponding slot located on the side opposite to the fold line of said tongue, over a distance h less than or equal to around 5mm.
  • one and / or the other of the following arrangements are also used:
  • Each slot consists of two half-slots respectively made opposite in the peripheral edges of the upper flaps, the tabs being centered laterally with respect to the corresponding lower flaps;
  • each half-slot is extended to its end portion situated on the side opposite the other half-slot opposite, by a line which can be cut or cut in the corresponding upper flap, said breakable or cut line being directed towards the fold line of the lower flap of the tongue corresponding to said half-slot over a determined distance, and being located in line with the corresponding edge of said tongue.
  • Such an arrangement allows proper operation of the system during successive locks and unlocks, by allowing greater elasticity of the hinge formed by the fold line of the tongue.
  • Each tongue has a substantially T-shaped whose crossbar is connected to the fold line of the tongue relative to the corresponding face; each tongue has a rectangular or isosceles trapezoidal shape ending in a triangular end part with an obtuse angle at the top.
  • the bottom consists of flaps connected respectively to the lateral faces by fold lines, namely two opposite inner flaps and two opposite outer flaps and comprises two recessed parts in said outer flaps, of shape complementary to that of the tongues.
  • the invention also relates to a blank of material of corrugated cardboard sheet or equivalent intended to form a box with polygonal section, comprising: lateral flaps connected to each other by means of first parallel fold lines,
  • first set of flaps connected to one side of said lateral flaps by second fold lines orthogonal to said first fold lines, suitable for forming the bottom of the box, and
  • a second set of flaps connected to the other side of said side flaps by third fold lines orthogonal to said first fold lines, suitable for forming the cover of the box, said set consisting of two so-called upper side flaps interposed with two so-called lower side flaps, the lower flaps each comprising a tongue cut out on one side in said flap, and connected on the other side to the adjacent flap by a fold line substantially coincident with the third fold line of said flap, the peripheral edges upper flaps opposite to the third fold lines comprising respectively two portions of slots situated on either side of said upper flaps, at a determined distance d.
  • FIGS. 2 to 5 show the steps for forming and locking the lid of a box formed from a blank of the type described with reference to FIG. 1.
  • Figure 6 is a plan view of another embodiment of a blank according to the invention.
  • Figure 7 is a plan view of a blank according to another embodiment of the invention.
  • Figure 8 shows two partial perspective views of the locking tab of the cover obtained with the blank of Figure 7, in the locked position, and when it is released elastically by simple pressure on the cover.
  • Figure 1 shows a blank 1 comprising a series of eight side flaps, namely four main flaps including two large flaps 2 and 3 interspersed with two small flaps 4 and 5, and four intermediate flaps 6 suitable for forming the cut corners of the body , said intermediate flaps being respectively between a large flap and a small flap when the body is formed.
  • the series of shutters is completed on one side, in the embodiment more particularly described here, by a tab 7 suitable for being fixed on the intermediate flap 6 attached to the main flap 2 located on the other side of the series of flaps relative to said tongue.
  • the flaps are connected to each other by first parallel fold lines 8.
  • the blank comprises a first set of flaps 9 located on one side of the flaps and intended to form the bottom of the box, and a second set 10 of flaps located on the other side of the flaps and intended to form the cover of the box .
  • the first assembly 9 comprises four substantially rectangular flaps connected to the lateral sides of the four main flaps by fold lines 11, perpendicular to the first fold lines, namely two large flaps 12 and 13, connected to the large flaps 2 and 3 , and two small flaps 14 and 15, connected to small flaps 4 and 5.
  • the intermediate flaps 6 are in turn devoid of flaps.
  • the two large flaps 12 and 13 have a width, in the transverse direction, equal to or substantially equal to half the width of the box formed.
  • the large flaps 12 and 13 are identical. Each large flap has three sides 12.1, 12.2 and 12.3, (13.1, 13.2 and 13.3), namely two lateral sides 12.1 and 12.3 (13.1 and 13.3) located on either side of said flap and one side 12.2 (13.2) parallel and opposite the second fold line 11 of the flap with the corresponding flap.
  • Each lateral side of the large flap comprises a first part at an angle of 45 ° towards the outside of the flap from the second fold lines, arranged to cover the adjacent intermediate flap when the body is formed, said first part being extended by a second part perpendicular to said second fold lines, said lateral side ending at the angle with the peripheral edge by a 16 " notch having a first recess 17, towards the inside of the flap, for example rounded, and a second recess 18, always directed towards the inside of the flap, for example at right angles, the length of the peripheral edge 12.2; 13.2 on the parallel side between upper ends 16 'of the notches being -
  • the small flaps 14 and 15 are themselves identical and rectangular, in the embodiment more particularly described here. Their lateral sides are also located at a distance from the lateral sides of the corresponding large flaps, for example a few millimeters.
  • the second set 10 of flaps is connected to the four main flaps by third fold lines 19, 20 and 21 perpendicular to the first fold lines 8. More precisely, the second set comprises two large flaps 22 and 23 connected respectively to the large flaps by the fold lines 19, and two small flaps 24 and 25 respectively connected to the small flaps by fold lines 20 and 21, as will be described more precisely below.
  • the large flaps 22 and 23 each have three sides respectively 22.1, 22.2 and 22.3 and
  • Each lateral side includes a first part at an angle of 45 ° outwards from the third fold lines arranged to cover the corresponding intermediate flaps when the body is formed, a second part perpendicular to the third lines and an end part. 26 beveled towards the inside of the flap.
  • peripheral edges of the sides 22.2 and 23.2 furthermore comprise respectively two identical rectangular or substantially rectangular slots 27 and 28, perpendicular to said edges, located on either side of the flap at a determined distance d.
  • the width 1 of the flaps 22 and 23, between the fold lines 19 and the peripheral edges 22.2 and 23.2, is equal to half the width of the cover of the box, so that, when the latter is formed, said edges are joined, the slots 27 and 28 of the flap 22 facing the corresponding slots 27 and 28 of the flap 23, to form two identical parallel slots straddling the junction between flaps.
  • the small flaps 24 and 25 are rectangular, for example of the same width 1 as the large flaps 22 and 23. They each have a tongue 29 cut on one side in the flap and connected on the other side to the flap 4 or 5 by a fold line 21 slightly offset towards the inside of the flap, for example by 1 or 2 mm relative to the fold line 20, which is distributed on either side of said tongue centered relative to the flap.
  • the tongue has a tip-shaped end 30, for example forming an angle at the top obtuse of the order of 160 or 170 °, the distance between the fold line 21 and the end of the tip 30 being!, with d_ slightly greater than d for example greater by two to three millimeters than d.
  • the tongue also has a T shape complementary to that of two symmetrically joined notches 16.
  • FIGS. 2 to 5 show the formation of a box 31 with cut corners 32, formed with a blank of the type of that shown in FIG. 1.
  • the box 31 has main lateral faces 33, a bottom 34 and a cover 35, comprising two identical opposite upper flaps 36 and two identical opposite lower flaps 37, connected respectively to the lateral faces by fold lines 38 and 39.
  • FIGS. 4 and 5 show more precisely the cover of the box which comprises two slots 40 formed in the upper flaps respectively, on either side of the cover, parallel to and at the distance d from the fold lines 39 of the lower flaps 37, with the faces to which they are connected.
  • the cover also comprises two tongues 41, cut on one side in said lower flaps 37, and articulated on the other side respectively with respect to the lateral face corresponding to said flap 37, around fold lines 42 parallel and slightly above the fold lines 39 of lower flaps 37.
  • the tongues cover the upper flaps, which themselves cover the complementary part of the cutout of the tabs of the lower flap, the end 43 of said tongues snapping into the slots 40.
  • the bottom of the box comprises two small internal flaps 44 and two large external flaps 45 connected respectively to the corresponding lateral faces by fold lines 46 and 47.
  • the bottom comprises two recesses 48, of a shape complementary to that of the tongues, so that when the boxes are stacked on top of each other, the tongues fit into the recesses of an upper case, which allows blocking lateral of the boxes relative to each other.
  • FIG. 6 shows another embodiment of a blank 50 according to the invention.
  • the blank 50 here comprises only four flaps 51, and an end bonding tongue 52, to form a parallelepiped box.
  • the flaps 53 forming the cover are here of the same width, two of said flaps include tabs 54, of substantially rectangular shape whose end is adapted to cooperate with the half-slots 55 which, when joined, form the slots of the cover as described above.
  • the flaps 56 forming the bottom of the box are, for example, devoid of notches here, and are of conventional type, for American box.
  • the side walls of the box are formed by winding around a mandrel, the inner flaps of the bottom being first folded. Then the outer flaps are in turn folded over the inner flaps, as shown diagrammatically in FIG. 2. The box is then filled from above. Then fold the lower flaps of the cover. Due to the offset between fold lines 20 and 21, the lines 20 being also and for example more pronounced than the fold lines 21, the tongues remain straight or vertical (see FIG. 3).
  • FIG. 7 shows a blank 60 of double-sided corrugated cardboard, for example very thick (greater than 5 mm) according to another embodiment of the invention, comprising four rectangular lateral flaps 61, 62, 63 and 64 connected in pairs by fold lines 65 parallel to each other.
  • the blank is finished laterally, on one side, by a bonding tab 66 and comprises, in the transverse direction, on one side, a first set 67 of four flaps connected respectively to one side of each lateral flap by second lines folding 68 perpendicular to the first and intended to form the bottom of the box, and, on the other side, a second set 69 of four flaps connected to the opposite side of said flaps by third folding lines 70, and intended to form the box cover.
  • the assembly 69 consists of two rectangular side flaps 71 and 72, called upper flaps, interspersed with two side flaps 73 and 74, called lower flaps.
  • the lower flaps are for example trapezoidal, isosceles, with an angle at the base ⁇ of between around 88 ° and around 70 °.
  • Each tongue comprises a lower part in the form of an isosceles trapezium advantageously of height d.
  • ⁇ and angle at the base ⁇ (long side of the trapezoid), said base being coincident or substantially coincident with the fold line 70.
  • the angle ⁇ is for example between about 85 ° and order of 60 °, for example equal to 80 °.
  • the tongue is terminated by a triangular end portion 76, with an obtuse apex angle for example equal to around 160 ° and of small height ⁇ , for example equal to 2mm.
  • the upper flaps 71 and 72 comprise, for their part, and starting from their peripheral edge 77 opposite the fold lines 70, a rectangular half-slot 78, perpendicular to said peripheral edge 77 and whose internal edge 79
  • Each half-slot 78 ends in a cut or breakable line 80, directed at an angle towards the adjacent edge 79 and the fold line 70, on a determined length 1 for example equal to of the order of 1 to 2 cm.
  • the assembly 67 intended to form the bottom of the body comprises two flaps 81 and 82 substantially rectangular, inserted two by two with two isosceles trapezoidal flaps 83 and 84.
  • the flaps 81 and 82 each have an outer peripheral edge 85 in two for example equal parts, parallel to the second fold lines 68, said edge being provided with a recess between its two parts.
  • Each end of the flaps 81 and 82 also comprises a recessed part 87 or 88 of shape complementary to that of a half-tab, as one has seen previously.
  • the presence of the cut lines 80 facilitates successive openings and closings of the box 89.
  • the tongue 75 is unlocked by pressing on the upper flaps 71 and 72 adjacent to the tongue, or by pushing in the middle of the body cover, which allows the tongue, the end of which is not very engaged under the flaps. upper beyond the slot 90 formed by the two half-slots 78, to be released automatically with good elasticity, the internal part 91 of the upper flaps, delimited by the lines 80, playing a role of return spring.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Abstract

A crate (31) made of a sheet material such as corrugated cardboard or the like, and comprising a lid with two opposite upper flaps (36) and two opposite lower flaps (37) therebelow. The lid includes two slots provided in the upper flaps on either side of the lid, and two tabs (41) cut out of the lower flaps on one side and pivotably mounted parallel to and above the fold lines of said lower flaps on the other side such that said tabs can be folded down over respective tabs of the upper flaps with their ends engaged in the corresponding slots (40) in the lid.

Description

CAISSE DE MATIERE EN FEUILLE AVEC VERROUILLAGE DU COUVERCLE ET FLAN POUR LA REALISATION D'UNE TELLE CAISSESHEET MATERIAL CASE WITH LID LOCK AND BLANK FOR MAKING SUCH A CASE
La présente invention concerne une caisse de matière en feuille de carton ondulé ou équivalent, présentant une section polygonale, du type comportant des faces latérales, un fond et un couvercle comprenant deux rabats supérieurs opposés et deux rabats inférieurs opposés situés en dessous desdits rabats supérieurs, lesdits rabats étant reliés respectivement aux faces latérales par des lignes de pliage, le couvercle comprenant : deux fentes formées dans les rabats supérieurs, respectivement de part et d'autre du couvercle parallèlement et à une distance d. des lignes de pliage des rabats inférieurs, et deux languettes découpées respectivement d'un côté dans les rabats inférieurs, et articulées respectivement de l'autre côté parallèlement aux lignes de pliage desdits rabats inférieurs, recouvrant respectivement lesdits rabats supérieurs et agencées pour que leurs extrémités pénètrent respectivement dans les fentes correspondantes du couvercle.The present invention relates to a box of material made of corrugated cardboard sheet or equivalent, having a polygonal section, of the type comprising lateral faces, a bottom and a cover comprising two opposite upper flaps and two opposite lower flaps situated below said upper flaps, said flaps being respectively connected to the lateral faces by fold lines, the cover comprising: two slots formed in the upper flaps, respectively on either side of the cover parallel and at a distance d. fold lines of the lower flaps, and two tabs cut respectively on one side in the lower flaps, and articulated respectively on the other side parallel to the fold lines of said lower flaps, covering said upper flaps respectively and arranged so that their ends penetrate respectively into the corresponding slots of the cover.
Elle concerne également un flan pour la réalisation d'une telle caisse. Elle trouve une application particulièrement importante bien que non exclusive dans le domaine des caisses polygonales à plus de quatre côtés, par exemple à huit côtés dont quatre coins coupés, qui peuvent présenter lorsque elles ne sont pas entièrement remplies, des déformations en cas de sollicitations latérales.It also relates to a blank for the production of such a box. It finds a particularly important although not exclusive application in the field of polygonal boxes with more than four sides, for example with eight sides including four cut corners, which can present, when they are not completely filled, deformations in the event of lateral stresses. .
On connaît déjà des systèmes de verrouillage permettant de bloquer un couvercle de boîte, ce qui évite ensuite ces déformations intempestives. Il s'agit notamment du verrouillage par bande adhésive.Locking systems are already known which make it possible to block a box cover, which then avoids these untimely deformations. These include locking by adhesive tape.
De tels systèmes présentent cependant des inconvénients. Ils nécessitent en effet un élément constitutif supplémentaire de la caisse, à savoir la bande adhésive, et entraînent de ce fait des coûts et des opérations supplémentaires lors de la fabrication.However, such systems have drawbacks. They indeed require an additional constituent element of the body, namely the adhesive strip, and therefore entail additional costs and operations during manufacture.
On connait également (US-A-3.302.853) une caisse du type ci-dessus définie, mais qui présente ici encore des inconvénients . Le verrouillage des languettes s'effectue en effet par accrochage de leur extrémité élargie dans les fentes correspondantes, ce qui autorise un blocage efficace du couvercle en position fermée, mais rend la réouverture de la caisse difficile, par exemple pour réaliser un étiquetage du contenu ou pour rajouter des pièces au contenu de la caisse préalablement fermée une première fois . La présente invention vise à fournir une boîte et un flan répondant mieux que ceux antérieurement connus aux exigences de la pratique notamment en ce qu'elle propose un système de verrouillage du couvercle permettant un bon équerrage de la caisse lors de sa fermeture, simple et aisé à mettre en oeuvre, sans coûts additionnels, et autorisant des verrouillages et déverrouillages successifs du couvercle, faciles, fiables et reproductibles.There is also known (US-A-3,302,853) a box of the type defined above, but which here again has drawbacks. The locking of the tabs is effected by hooking their enlarged end into the corresponding slots, which allows effective locking of the cover in the closed position, but makes reopening of the box difficult, for example for labeling the content or to add parts to the contents of the box, which has been closed for the first time. The present invention aims to provide a box and a blank meeting better than those previously known to the requirements of practice in particular in that it provides a lid locking system allowing a good squaring of the box when it is closed, simple and easy. to be implemented, without additional costs, and allowing successive locks and unlockings of the cover, easy, reliable and reproducible.
Dans ce but 1 ' invention propose notamment une caisse de matière en feuille de carton ondulé ou équivalent présentant une section polygonale, ladite caisse étant du type ci-dessus mentionné, caractérisée en ce que l'extrémité de chaque languette est en forme de pointe et est agencée pour venir en butée par en dessous avec le bord périphérique de la fente correspondante situé du coté opposé à la ligne de pliage de ladite languette, sur une distance h inférieure ou égale à de l'ordre de 5mm. Dans des modes de réalisation avantageux on a de plus recours à l'une et/ou à l'autre des dispositions suivantes :For this purpose, the invention proposes in particular a case of material made of corrugated cardboard sheet or equivalent having a polygonal section, said case being of the type mentioned above, characterized in that the end of each tab is in the shape of a point and is arranged to come into abutment from below with the edge peripheral of the corresponding slot located on the side opposite to the fold line of said tongue, over a distance h less than or equal to around 5mm. In advantageous embodiments, one and / or the other of the following arrangements are also used:
- h est inférieure ou égale à de l'ordre de 2mm ;- h is less than or equal to around 2mm;
- chaque fente est constituée de deux demi-fentes respectivement réalisées en vis à vis dans les bords périphériques des rabats supérieurs, les languettes étant centrées latéralement par rapport aux rabats inférieurs correspondants ;- Each slot consists of two half-slots respectively made opposite in the peripheral edges of the upper flaps, the tabs being centered laterally with respect to the corresponding lower flaps;
- chaque demi-fente est prolongée à sa portion d'extrémité située du coté opposé à l'autre demi- fente en vis à vis, par une ligne sécable ou découpée dans le rabat supérieur correspondant, ladite ligne sécable ou découpée étant dirigée vers la ligne de pliage du rabat inférieur de la languette correspondant à ladite demi-fente sur une distance déterminée, et étant située au droit du bord correspondant de ladite languette.each half-slot is extended to its end portion situated on the side opposite the other half-slot opposite, by a line which can be cut or cut in the corresponding upper flap, said breakable or cut line being directed towards the fold line of the lower flap of the tongue corresponding to said half-slot over a determined distance, and being located in line with the corresponding edge of said tongue.
Une telle disposition permet un bon fonctionnement du système lors des verrouillages et déverrouillages successifs, en autorisant une plus grande élasticité de la charnière constituée par la ligne de pliage de la languette.Such an arrangement allows proper operation of the system during successive locks and unlocks, by allowing greater elasticity of the hinge formed by the fold line of the tongue.
- chaque languette présente sensiblement une forme de T dont la barre transversale est reliée à la ligne de pliage de la languette par rapport à la face correspondante ; chaque languette présente une forme rectangulaire ou trapézoïdale isocèle se terminant par une partie d'extrémité triangulaire d'angle obtu au sommet. le fond est constitué de rabats reliés respectivement aux faces latérales par des lignes de pliage, à savoir deux rabats intérieurs opposés et deux rabats extérieurs opposés et comprend deux parties évidées dans lesdits rabats extérieurs, de forme complémentaire à celle des languettes.- Each tongue has a substantially T-shaped whose crossbar is connected to the fold line of the tongue relative to the corresponding face; each tongue has a rectangular or isosceles trapezoidal shape ending in a triangular end part with an obtuse angle at the top. the bottom consists of flaps connected respectively to the lateral faces by fold lines, namely two opposite inner flaps and two opposite outer flaps and comprises two recessed parts in said outer flaps, of shape complementary to that of the tongues.
L'invention concerne également un flan de matière en feuille de carton ondulé ou équivalent destiné à former une caisse à section polygonale, comportant : des volets latéraux reliés entre eux par l'intermédiaire de premières lignes de pliage parallèles,The invention also relates to a blank of material of corrugated cardboard sheet or equivalent intended to form a box with polygonal section, comprising: lateral flaps connected to each other by means of first parallel fold lines,
- un premier ensemble de rabats reliés à un côté desdits volets latéraux par des deuxièmes lignes de pliage orthogonales auxdites premières lignes de pliage, propre à former le fond de la caisse, eta first set of flaps connected to one side of said lateral flaps by second fold lines orthogonal to said first fold lines, suitable for forming the bottom of the box, and
- un second ensemble de rabats reliés à l'autre côté desdits volets latéraux par des troisièmes lignes de pliage orthogonales auxdites premières lignes de pliage, propre à former le couvercle de la caisse, ledit ensemble étant constitué de deux rabats latéraux dits supérieurs intercalés avec deux rabats latéraux dits inférieurs, les rabats inférieurs comportant chacun une languette découpée d'un côté dans ledit rabat, et reliée de l'autre côté au volet adjacent par une ligne de pliage sensiblement confondue avec la troisième ligne de pliage dudit rabat, les bords périphériques des rabats supérieurs opposés aux troisièmes lignes de pliage comprennant respectivement deux portions de fentes situées de part et d'autre desdits rabats supérieurs, à une distance déterminée d. des bords latéraux desdits rabats correspondants, caractérisé en ce que l'extrémité des languettes est en forme de pointe et la longueur desdites languettes d' , entre l'extrémité de la pointe et la ligne de pliage de la languette avec le volet auquel elle est reliée, est un peu supérieure à ladite distance d..- A second set of flaps connected to the other side of said side flaps by third fold lines orthogonal to said first fold lines, suitable for forming the cover of the box, said set consisting of two so-called upper side flaps interposed with two so-called lower side flaps, the lower flaps each comprising a tongue cut out on one side in said flap, and connected on the other side to the adjacent flap by a fold line substantially coincident with the third fold line of said flap, the peripheral edges upper flaps opposite to the third fold lines comprising respectively two portions of slots situated on either side of said upper flaps, at a determined distance d. lateral edges of said corresponding flaps, characterized in that the end of the tongues is in the form of a point and the length of said tongues, between the end of the point and the fold line of the tongue with the flap to which it is connected, is slightly greater than said distance d . .
L'invention sera mieux comprise à la lecture de la description qui suit de modes de réalisation donnés à titre d'exemple non limitatif. Elle se réfère aux dessins qui l'accompagnent dans lesquels : - La figure 1 est une vue en plan d'un flan selon un mode de réalisation de l'invention.The invention will be better understood on reading the following description of embodiments given by way of nonlimiting example. It refers to the accompanying drawings in which: - Figure 1 is a plan view of a blank according to an embodiment of the invention.
Les figures 2 à 5 montrent les étapes de formation et de verrouillage du couvercle d'une caisse constituée à partir d'un flan du type de celui décrit en référence à la figure 1.FIGS. 2 to 5 show the steps for forming and locking the lid of a box formed from a blank of the type described with reference to FIG. 1.
La figure 6 est une vue en plan d'un autre mode de réalisation d'un flan selon l'invention.Figure 6 is a plan view of another embodiment of a blank according to the invention.
La figure 7 est une vue en plan d'un flan selon un autre mode de réalisation de l'invention. - La figure 8 montre deux vues en perspective, partielles, de la languette de verrouillage du couvercle obtenu avec le flan de la figure 7, en position verrouillée, et lorsqu'elle se libère de façon élastique par simple pression sur le couvercle. La figure 1 montre un flan 1 comprenant une suite de huit volets latéraux, à savoir quatre volets principaux dont deux grands volets 2 et 3 intercalés avec deux petits volets 4 et 5, et quatre volets intermédiaires 6 propres à former les coins coupés de la caisse, lesdits volets intermédiaires étant respectivement entre un grand volet et un petit volet lorsque la caisse est formée.Figure 7 is a plan view of a blank according to another embodiment of the invention. - Figure 8 shows two partial perspective views of the locking tab of the cover obtained with the blank of Figure 7, in the locked position, and when it is released elastically by simple pressure on the cover. Figure 1 shows a blank 1 comprising a series of eight side flaps, namely four main flaps including two large flaps 2 and 3 interspersed with two small flaps 4 and 5, and four intermediate flaps 6 suitable for forming the cut corners of the body , said intermediate flaps being respectively between a large flap and a small flap when the body is formed.
La suite des volets est terminée d'un côté, dans le mode de réalisation plus particulièrement décrit ici, par une languette 7 propre à être fixée sur le volet intermédiaire 6 accolé au volet principal 2 situé de l'autre côté de la suite de volets par rapport à ladite languette. Les volets sont reliés entre eux par des premières lignes de pliage parallèles 8.The series of shutters is completed on one side, in the embodiment more particularly described here, by a tab 7 suitable for being fixed on the intermediate flap 6 attached to the main flap 2 located on the other side of the series of flaps relative to said tongue. The flaps are connected to each other by first parallel fold lines 8.
Le flan comprend un premier ensemble de rabats 9 situé d'un côté des volets et destiné à former le fond de la caisse, et un second ensemble 10 de rabats situé de l'autre côté des volets et destiné à former le couvercle de la caisse.The blank comprises a first set of flaps 9 located on one side of the flaps and intended to form the bottom of the box, and a second set 10 of flaps located on the other side of the flaps and intended to form the cover of the box .
Plus précisément, le premier ensemble 9 comprend quatre rabats sensiblement rectangulaires reliés aux côtés latéraux des quatre volets principaux par des lignes de pliage 11, perpendiculaires aux premières lignes de pliage, à savoir deux grands rabats 12 et 13 , reliés aux grands volets 2 et 3, et deux petits rabats 14 et 15, reliés aux petits volets 4 et 5.More specifically, the first assembly 9 comprises four substantially rectangular flaps connected to the lateral sides of the four main flaps by fold lines 11, perpendicular to the first fold lines, namely two large flaps 12 and 13, connected to the large flaps 2 and 3 , and two small flaps 14 and 15, connected to small flaps 4 and 5.
Les volets intermédiaires 6 sont quant à eux dépourvus de rabats.The intermediate flaps 6 are in turn devoid of flaps.
Dans le mode de réalisation plus particulièrement décrit ici, les deux grands rabats 12 et 13 présentent une largeur, dans le sens transversal, égale ou sensiblement égale à la moitié de la largeur de la caisse formée.In the embodiment more particularly described here, the two large flaps 12 and 13 have a width, in the transverse direction, equal to or substantially equal to half the width of the box formed.
Les grands rabats 12 et 13 sont identiques . Chaque grand rabat comprend trois côtés 12.1, 12.2 et 12.3, (13.1, 13.2 et 13.3) à savoir deux côtés latéraux 12.1 et 12.3 (13.1 et 13.3) situés de part et d'autre dudit rabat et un côté 12.2 (13.2) parallèle et opposé à la deuxième ligne de pliage 11 du rabat avec le volet correspondant.The large flaps 12 and 13 are identical. Each large flap has three sides 12.1, 12.2 and 12.3, (13.1, 13.2 and 13.3), namely two lateral sides 12.1 and 12.3 (13.1 and 13.3) located on either side of said flap and one side 12.2 (13.2) parallel and opposite the second fold line 11 of the flap with the corresponding flap.
Chaque côté latéral de grand rabat comprend une première partie en biais à 45° vers l'extérieur du rabat à partir des deuxièmes lignes de pliage, agencée pour venir coiffer le volet intermédiaire adjacent lorsque la caisse est formée, ladite première partie étant prolongée par une deuxième partie perpendiculaire auxdites deuxièmes lignes de pliage, ledit côté latéral se terminant à l'angle avec le bord périphérique par une échancrure 16" présentant un premier décrochement 17, vers l'intérieur du rabat, par exemple arrondi, et un deuxième décrochement 18, toujours dirigé vers l'intérieur du rabat, par exemple à angle droit, la longueur du bord périphérique 12.2 ; 13.2 du côté parallèle entre extrémités supérieures 16 ' des échancrures étant -Each lateral side of the large flap comprises a first part at an angle of 45 ° towards the outside of the flap from the second fold lines, arranged to cover the adjacent intermediate flap when the body is formed, said first part being extended by a second part perpendicular to said second fold lines, said lateral side ending at the angle with the peripheral edge by a 16 " notch having a first recess 17, towards the inside of the flap, for example rounded, and a second recess 18, always directed towards the inside of the flap, for example at right angles, the length of the peripheral edge 12.2; 13.2 on the parallel side between upper ends 16 'of the notches being -
Les petits rabats 14 et 15 sont quant à eux identiques et rectangulaires, dans le mode de réalisation plus particulièrement décrit ici. Leurs côtés latéraux sont par ailleurs situés à distance des côtés latéraux des grands volets correspondants, par exemple à quelques millimètres. Le second ensemble 10 de rabats est relié aux quatre volets principaux par des troisièmes lignes de pliage 19, 20 et 21 perpendiculaires aux premières lignes de pliage 8. Plus précisément le second ensemble comporte deux grands rabats 22 et 23 reliés respectivement aux grands volets par les lignes de pliage 19, et deux petits rabats 24 et 25 reliés respectivement aux petits volets par les lignes de pliage 20 et 21, comme cela va être décrit plus précisément ci-après. Les grands rabats 22 et 23 comprennent chacun trois côtés respectivement 22.1, 22.2 et 22.3 etThe small flaps 14 and 15 are themselves identical and rectangular, in the embodiment more particularly described here. Their lateral sides are also located at a distance from the lateral sides of the corresponding large flaps, for example a few millimeters. The second set 10 of flaps is connected to the four main flaps by third fold lines 19, 20 and 21 perpendicular to the first fold lines 8. More precisely, the second set comprises two large flaps 22 and 23 connected respectively to the large flaps by the fold lines 19, and two small flaps 24 and 25 respectively connected to the small flaps by fold lines 20 and 21, as will be described more precisely below. The large flaps 22 and 23 each have three sides respectively 22.1, 22.2 and 22.3 and
23.1, 23.2 et 23.3, à savoir deux côtés latéraux23.1, 23.2 and 23.3, namely two lateral sides
[22.1 et 22.3 ; 23.1 et 23.3] et un côté parallèle et opposé aux troisièmes lignes de pliage [22.2 et 23.2] . Chaque côté latéral comprend une première partie en biais à 45° vers l'extérieur à partir des troisièmes lignes de pliage agencée pour venir coiffer les volets intermédiaires correspondants lorsque la caisse est formée, une deuxième partie perpendiculaire aux troisième lignes et une partie d'extrémité 26 en biseau vers l'intérieur du rabat.[22.1 and 22.3; 23.1 and 23.3] and a side parallel and opposite to the third fold lines [22.2 and 23.2]. Each lateral side includes a first part at an angle of 45 ° outwards from the third fold lines arranged to cover the corresponding intermediate flaps when the body is formed, a second part perpendicular to the third lines and an end part. 26 beveled towards the inside of the flap.
Les bords périphériques des côtés 22.2 et 23.2, comprennent par ailleurs respectivement deux fentes identiques rectangulaires ou sensiblement rectangulaires 27 et 28, perpendiculaires auxdits bords, situées de part et d'autres du rabat à une distance déterminée d. des bords latéraux 22.1 et 22.3 d'une part, 23.1 et 23.3 d'autre part, de longueur x/2 et de largeur e, par exemple de 3 à 5 mm.The peripheral edges of the sides 22.2 and 23.2, furthermore comprise respectively two identical rectangular or substantially rectangular slots 27 and 28, perpendicular to said edges, located on either side of the flap at a determined distance d. lateral edges 22.1 and 22.3 on the one hand, 23.1 and 23.3 on the other hand, of length x / 2 and of width e, for example from 3 to 5 mm.
La largeur 1 des rabats 22 et 23, entre les lignes de pliage 19 et les bords périphériques 22.2 et 23.2, est égale à la moitié de la largeur du couvercle de la caisse, de sorte que, lorsque celle- ci est formée, lesdits bords sont jointifs, les fentes 27 et 28 du rabat 22 venant en vis à vis des fentes correspondantes 27 et 28 du rabat 23, pour former deux fentes identiques parallèles à cheval sur la jonction entre rabats. Les petits rabats 24 et 25 sont quant à eux rectangulaires, par exemple de même largeur 1 que les grands rabats 22 et 23. Ils comportent chacun une languette 29 découpée d'un côté dans le rabat et reliée de l'autre côté au volet 4 ou 5 par une ligne de pliage 21 légèrement décalée vers l'intérieur du rabat, par exemple d'1 ou 2 mm par rapport à la ligne de pliage 20, qui se répartit de part et d'autre de ladite languette centrée par rapport au rabat .The width 1 of the flaps 22 and 23, between the fold lines 19 and the peripheral edges 22.2 and 23.2, is equal to half the width of the cover of the box, so that, when the latter is formed, said edges are joined, the slots 27 and 28 of the flap 22 facing the corresponding slots 27 and 28 of the flap 23, to form two identical parallel slots straddling the junction between flaps. The small flaps 24 and 25 are rectangular, for example of the same width 1 as the large flaps 22 and 23. They each have a tongue 29 cut on one side in the flap and connected on the other side to the flap 4 or 5 by a fold line 21 slightly offset towards the inside of the flap, for example by 1 or 2 mm relative to the fold line 20, which is distributed on either side of said tongue centered relative to the flap.
La languette comporte une extrémité 30 en forme de pointe, par exemple formant un angle au sommet obtu de l'ordre de 160 ou 170°, la distance entre la ligne de pliage 21 et l'extrémité de la pointe 30 étant !, avec d_ un peu supérieur à d par exemple supérieur de deux à trois millimètres à d. La languette présente par ailleurs une forme en T complémentaire de celle de deux échancrures 16 symétriquement accolées.The tongue has a tip-shaped end 30, for example forming an angle at the top obtuse of the order of 160 or 170 °, the distance between the fold line 21 and the end of the tip 30 being!, with d_ slightly greater than d for example greater by two to three millimeters than d. The tongue also has a T shape complementary to that of two symmetrically joined notches 16.
Les figures 2 à 5 montrent la formation d'une caisse 31 à coins coupés 32, constituée avec un flan du type de celui représenté en figure 1.FIGS. 2 to 5 show the formation of a box 31 with cut corners 32, formed with a blank of the type of that shown in FIG. 1.
La caisse 31 comporte des faces latérales principales 33, un fond 34 et un couvercle 35, comprenant deux rabats supérieurs opposés 36 identiques et deux rabats inférieurs opposés identiques 37, reliés respectivement aux faces latérales par des lignes de pliage 38 et 39.The box 31 has main lateral faces 33, a bottom 34 and a cover 35, comprising two identical opposite upper flaps 36 and two identical opposite lower flaps 37, connected respectively to the lateral faces by fold lines 38 and 39.
Les figures 4 et 5 montrent plus précisemment le couvercle de la caisse qui comprend deux fentes 40 formées dans les rabats supérieurs respectivement ,de part et d'autre du couvercle, parallèlement aux, et à la distance d, des, lignes de pliage 39 des rabats inférieurs 37, avec les faces auxquelles ils sont reliés .FIGS. 4 and 5 show more precisely the cover of the box which comprises two slots 40 formed in the upper flaps respectively, on either side of the cover, parallel to and at the distance d from the fold lines 39 of the lower flaps 37, with the faces to which they are connected.
Le couvercle comprend également deux languettes 41, découpées d'un côté dans lesdits rabats inférieurs 37, et articulées de l'autre côté respectivement par rapport à la face latérale correspondant audit rabat 37, autour de lignes de pliage 42 parallèles et légèrement au dessus des lignes de pliage 39 des rabats inférieurs 37.The cover also comprises two tongues 41, cut on one side in said lower flaps 37, and articulated on the other side respectively with respect to the lateral face corresponding to said flap 37, around fold lines 42 parallel and slightly above the fold lines 39 of lower flaps 37.
Les languettes recouvrent les rabats supérieurs, qui recouvrent eux-mêmes la partie complémentaire de la découpe des languettes de rabat inférieur, l'extrémité 43 desdites languettes s'enclignant dans les fentes 40. Le fond de la caisse comporte quant à lui, deux petits rabats intérieurs 44 et deux grands rabats extérieurs 45 reliés respectivement aux faces latérales correspondantes par des lignes de pliage 46 et 47.The tongues cover the upper flaps, which themselves cover the complementary part of the cutout of the tabs of the lower flap, the end 43 of said tongues snapping into the slots 40. The bottom of the box comprises two small internal flaps 44 and two large external flaps 45 connected respectively to the corresponding lateral faces by fold lines 46 and 47.
Le fond comprend deux evidements 48, de forme complémentaire à celle des languettes, de sorte que lors de l'empilement des caisses les unes sur les autres, les languettes s'emboîtent dans les evidements d'une caisse supérieure, ce qui permet un blocage latéral des caisses les unes par rapport aux autres .The bottom comprises two recesses 48, of a shape complementary to that of the tongues, so that when the boxes are stacked on top of each other, the tongues fit into the recesses of an upper case, which allows blocking lateral of the boxes relative to each other.
On a représenté sur la figure 6 un autre mode de réalisation d'un flan 50 selon l'invention. Le flan 50 comporte ici uniquement quatre volets 51, et une languette de collage 52 d'extrémité, pour former une caisse parallélépipèdique.FIG. 6 shows another embodiment of a blank 50 according to the invention. The blank 50 here comprises only four flaps 51, and an end bonding tongue 52, to form a parallelepiped box.
Les rabats 53 formant le couvercle sont ici de même largeur, deux desdits rabats comprennent des languettes 54, de forme sensiblement rectangulaires dont l'extrémité est propre à coopérer avec les demi- fentes 55 qui, une fois accolées, forment les fentes du couvercle comme décrit ci-avant. Les rabats 56 formant le fond de la caisse sont, par exemple, démunis ici d'échancrures, et sont de type classique, pour caisse américaine.The flaps 53 forming the cover are here of the same width, two of said flaps include tabs 54, of substantially rectangular shape whose end is adapted to cooperate with the half-slots 55 which, when joined, form the slots of the cover as described above. The flaps 56 forming the bottom of the box are, for example, devoid of notches here, and are of conventional type, for American box.
On va maintenant décrire la formation du fond et du couvercle d'une caisse selon l'invention en références aux figures 2 à 5.We will now describe the formation of the bottom and the lid of a box according to the invention with reference to FIGS. 2 to 5.
Les parois latérales de la caisse sont formées par enroulement autour d'un mandrin, les rabats intérieurs du fond étant d'abord repliés. Puis les rabats extérieurs sont à leur tour repliés sur les rabats intérieurs, comme schématisé sur la figure 2. La caisse est alors remplie par le haut. On replie ensuite les rabats inférieurs du couvercle. Du fait du décalage entre lignes de pliage 20 et 21, les lignes 20 étant également et par exemple plus prononcées que les lignes de pliage 21, les languettes restent droites ou verticales (voir figure 3) .The side walls of the box are formed by winding around a mandrel, the inner flaps of the bottom being first folded. Then the outer flaps are in turn folded over the inner flaps, as shown diagrammatically in FIG. 2. The box is then filled from above. Then fold the lower flaps of the cover. Due to the offset between fold lines 20 and 21, the lines 20 being also and for example more pronounced than the fold lines 21, the tongues remain straight or vertical (see FIG. 3).
Puis on replit les rabats supérieurs du couvercle, les bords périphériques desdits rabats devenant jointifs (voir figures 4) .Then the upper flaps of the cover are folded back, the peripheral edges of said flaps becoming contiguous (see FIGS. 4).
Enfin, on replit les languettes dont l'extrémité vient s'encliquer dans les fentes.Finally, the tabs are folded, the end of which snaps into the slots.
La figure 7 montre un flan 60 en carton ondulé double face par exemple de forte épaisseur (supérieur à 5mm) selon un autre mode de réalisation de l'invention, comportant quatre volets latéraux rectangulaires 61, 62, 63 et 64 reliés deux à deux par des lignes de pliages 65 parallèles entre elles. Le flan est terminé latéralement, d'un coté, par une languette de collage 66 et comprend, dans le sens transversal, d'un coté, un premier ensemble 67 de quatre rabats reliés respectivement à un coté de chaque volet latéral par des deuxièmes lignes de pliage 68 perpendiculaires aux premières et destiné à former le fond de la caisse, et, de l'autre coté, un second ensemble 69 de quatre rabats reliés au coté opposé desdits volets par des troisièmes lignes de pliage 70, et destiné à former le couvercle de la caisse. L'ensemble 69 est constitué de deux rabats latéraux 71 et 72 rectangulaires, dits rabats supérieurs, intercalés avec deux rabats latéraux 73 et 74, dits rabats inférieurs. Les rabats inférieurs sont par exemple trapézoïdaux, isocèles, d'angle à la base α compris entre de l'ordre de 88° et de l'ordre de 70°.FIG. 7 shows a blank 60 of double-sided corrugated cardboard, for example very thick (greater than 5 mm) according to another embodiment of the invention, comprising four rectangular lateral flaps 61, 62, 63 and 64 connected in pairs by fold lines 65 parallel to each other. The blank is finished laterally, on one side, by a bonding tab 66 and comprises, in the transverse direction, on one side, a first set 67 of four flaps connected respectively to one side of each lateral flap by second lines folding 68 perpendicular to the first and intended to form the bottom of the box, and, on the other side, a second set 69 of four flaps connected to the opposite side of said flaps by third folding lines 70, and intended to form the box cover. The assembly 69 consists of two rectangular side flaps 71 and 72, called upper flaps, interspersed with two side flaps 73 and 74, called lower flaps. The lower flaps are for example trapezoidal, isosceles, with an angle at the base α of between around 88 ° and around 70 °.
Ils sont par exemple de même hauteur que les rabats supérieurs et comportent chacun une languetteThey are for example of the same height as the upper flaps and each have a tongue
75 découpée dans le rabat et reliée au volet correspondant (62 ou 64) , par exemple comme on l'a vu en référence à la figure 1.75 cut from the flap and connected to the corresponding flap (62 or 64), for example as we have seen with reference to FIG. 1.
Chaque languette comprend une partie inférieure en forme de trapèze isocèle avantageusement de hauteur d.Δ et d'angle à la base β (grand coté du trapèze) , ladite base étant confondue ou sensiblement confondue avec la ligne de pliage 70. L'angle β est par exemple compris entre de l'ordre de 85° et de l'ordre de 60°, par exemple égal à 80°.Each tongue comprises a lower part in the form of an isosceles trapezium advantageously of height d. Δ and angle at the base β (long side of the trapezoid), said base being coincident or substantially coincident with the fold line 70. The angle β is for example between about 85 ° and order of 60 °, for example equal to 80 °.
La languette est terminée par une portion d'extrémité triangulaire 76, d'angle au sommet obtu par exemple égal à de l'ordre de 160° et de faible hauteur ±, par exemple égale à 2mm. La hauteur de la languette (distance d_ = .ώ + i) est par exemple égale à la moitié de la largeur H du rabat.The tongue is terminated by a triangular end portion 76, with an obtuse apex angle for example equal to around 160 ° and of small height ±, for example equal to 2mm. The height of the tongue (distance d_ = .ώ + i) is for example equal to half the width H of the flap.
Les rabats supérieurs 71 et 72 comprennent, quant à eux, de part et d'autre et partant de leur bord périphérique 77 opposé aux lignes de pliage 70, une demi-fente rectangulaire 78, perpendiculaire audit bord périphérique 77 et dont le bord interne 79The upper flaps 71 and 72 comprise, for their part, and starting from their peripheral edge 77 opposite the fold lines 70, a rectangular half-slot 78, perpendicular to said peripheral edge 77 and whose internal edge 79
(dirigé vers le centre du rabat) est situé à une distance égale ou sensiblement égale à d.^ du bord latéral adjacent le plus proche 79 du rabat, perpendiculaire au bord périphérique 77 dudit rabat .(directed towards the center of the flap) is located at a distance equal to or substantially equal to d. ^ from the nearest adjacent lateral edge 79 of the flap, perpendicular to the peripheral edge 77 of said flap.
Chaque demi-fente 78 se termine par une ligne découpée ou sécable 80, dirigée en biais vers le bord 79 adjacent et la ligne de pliage 70, sur une longueur déterminée 1 par exemple égale à de 1 'ordre de 1 à 2cm.Each half-slot 78 ends in a cut or breakable line 80, directed at an angle towards the adjacent edge 79 and the fold line 70, on a determined length 1 for example equal to of the order of 1 to 2 cm.
L'ensemble 67 destiné à former le fond de la caisse comprend quant à lui deux rabats 81 et 82 sensiblement rectangulaires, intercalés deux à deux avec deux rabats trapézoïdaux isocèles 83 et 84.The assembly 67 intended to form the bottom of the body comprises two flaps 81 and 82 substantially rectangular, inserted two by two with two isosceles trapezoidal flaps 83 and 84.
Les rabats 81 et 82 comportent chacun un bord périphérique extérieur 85 en deux parties par exemple égales, parallèles aux deuxièmes lignes de pliage 68, ledit bord étant muni d'un décrochement entre ses deux parties.The flaps 81 and 82 each have an outer peripheral edge 85 in two for example equal parts, parallel to the second fold lines 68, said edge being provided with a recess between its two parts.
Chaque extrémité des rabats 81 et 82 comprend par ailleurs une partie évidée 87 ou 88 de forme complémentaire à celle d'une demi-languette, comme on 1 ' a vu précédemment.Each end of the flaps 81 and 82 also comprises a recessed part 87 or 88 of shape complementary to that of a half-tab, as one has seen previously.
Le fonctionnement du verrouillage/dé- verrouillage du couvercle est maintenant précisé en faisant référence à la figure 8.The operation of the lid locking / unlocking is now specified with reference to FIG. 8.
Pour ce faire, la présence des lignes découpées 80 facilite les ouvertures et les fermetures successives de la caisse 89.To do this, the presence of the cut lines 80 facilitates successive openings and closings of the box 89.
Le déverrouillage de la languette 75 est réalisé en appuyant sur les rabats supérieurs 71 et 72 adjacents à la languette, ou encore en enfonçant le milieu du couvercle de la caisse, ce qui permet à la languette dont l'extrémité est peu engagée sous les volets supérieurs au delà de la fente 90 constituée par les deux demi-fentes 78, de se libérer automatiquement avec une bonne élasticité, la partie interne 91 des rabats supérieurs, délimitée par les lignes 80, jouant un rôle de ressort de rappel. The tongue 75 is unlocked by pressing on the upper flaps 71 and 72 adjacent to the tongue, or by pushing in the middle of the body cover, which allows the tongue, the end of which is not very engaged under the flaps. upper beyond the slot 90 formed by the two half-slots 78, to be released automatically with good elasticity, the internal part 91 of the upper flaps, delimited by the lines 80, playing a role of return spring.

Claims

REVENDICATIONS
1. Caisse (31, 89) de matière en feuille de carton ondulé ou équivalent, présentant une section polygonale, comportant des faces latérales (33) , un fond (34) et un couvercle (35) comprenant deux rabats supérieurs opposés (36) et deux rabats inférieurs opposés (37) situés en dessous desdits rabats supérieurs, lesdits rabats étant reliés respectivement aux faces latérales par des lignes de pliage (38, 39) , le couvercle (35) comprennant : deux fentes (40, 90) formées dans les rabats supérieurs (36, 71, 72) , respectivement de part et d'autre du couvercle, parallèlement et à une distance d.ώ des lignes de pliage (39) des rabats inférieurs (37) , et1. Box (31, 89) of corrugated cardboard sheet material or equivalent, having a polygonal section, comprising lateral faces (33), a bottom (34) and a cover (35) comprising two opposite upper flaps (36) and two opposite lower flaps (37) located below said upper flaps, said flaps being connected respectively to the lateral faces by fold lines (38, 39), the cover (35) comprising: two slots (40, 90) formed in the upper flaps (36, 71, 72), respectively on either side of the cover, parallel and at a distance d. ώ fold lines (39) of the lower flaps (37), and
- deux languettes (41, 75) découpées respectivement d'un côté dans les rabats inférieurs, et articulées respectivement de l'autre côté parallèlement aux lignes de pliage (39) desdits rabats inférieurs, recouvrant respectivement lesdits rabats supérieurs et agencées pour que leurs extrémités (43) pénètrent respectivement dans les fentes correspondantes du couvercle, caractérisé en ce que l'extrémité (43) de chaque languettes est en forme de pointe et est agencée pour venir en butée par en dessous avec le bord périphérique de la fente correspondante situé du coté opposé à la ligne de pliage de la languette sur une distance h inférieure ou égale à de l'ordre de 5mm.- two tongues (41, 75) cut respectively on one side in the lower flaps, and articulated respectively on the other side parallel to the fold lines (39) of said lower flaps, respectively covering said upper flaps and arranged so that their ends (43) respectively penetrate into the corresponding slots in the cover, characterized in that the end (43) of each tab is in the shape of a point and is arranged to abut from below with the peripheral edge of the corresponding slot located in the side opposite to the fold line of the tongue over a distance h less than or equal to around 5mm.
2. Caisse selon la revendication 1, caractérisée en ce que h est inférieur ou égal à de l'ordre de 2mm. 2. Box according to claim 1, characterized in that h is less than or equal to around 2mm.
3. Caisse selon l'une quelconque des revendications précédentes, caractérisée en ce que chaque fente (40) est constituée de deux demi-fentes respectivement réalisées en vis à vis dans les bords périphériques des rabats supérieurs (36) , les languettes (41) étant centrées latéralement par rapport aux rabats inférieurs correspondants (37) .3. Box according to any one of the preceding claims, characterized in that each slot (40) consists of two half-slots respectively made opposite in the peripheral edges of the upper flaps (36), the tongues (41) being centered laterally with respect to the corresponding lower flaps (37).
4. Caisse selon la revendication 3 caractérisée en ce que chaque demi-fente est prolongée à sa portion d'extrémité située du coté opposé à l'autre demi- fente en vis à vis, par une ligne sécable ou découpée (80) dans le rabat supérieur correspondant, ladite ligne étant dirigée vers la ligne de pliage du rabat inférieur de la languette (75) correspondante audits demi-fentes sur une distance déterminée et étant située au droit du bord correspondant de ladite languette.4. Box according to claim 3 characterized in that each half-slot is extended to its end portion located on the side opposite to the other half-slot opposite, by a breakable line or cut (80) in the corresponding upper flap, said line being directed towards the fold line of the lower flap of the tongue (75) corresponding to said half-slots over a determined distance and being located in line with the corresponding edge of said tongue.
5. Caisse selon l'une quelconque des revendications précédentes, caractérisée en ce que chaque languette (41) présente sensiblement une forme de T dont la barre transversale est reliée à la ligne de pliage (39) de la languette par rapport à la face correspondante.5. Box according to any one of the preceding claims, characterized in that each tongue (41) has substantially a T-shape whose transverse bar is connected to the fold line (39) of the tongue relative to the corresponding face .
6. Caisse selon l'une quelconque des revendications 1 à 4 caractérisée en ce que chaque languette (75) présente sensiblement une forme rectangulaire ou trapézoïdale isocèle se terminant par une partie triangulaire d'angle au sommet obtu.6. Box according to any one of claims 1 to 4 characterized in that each tongue (75) has substantially a rectangular or isosceles trapezoidal shape ending in a triangular corner part at the obtuse apex.
7. Caisse selon l'une quelconque des revendications précédentes, caractérisée en ce que le fond (34) étant constitué de rabats (44, 45) reliés respectivement aux faces latérales par des lignes de pliage (46, 47), à savoir deux rabats intérieurs (44) opposés et deux rabats extérieurs (45) opposés, ledit fond comprend deux parties évidées (48) dans lesdits rabats extérieurs, de forme complémentaire à celle des languettes (41) . 7. Box according to any one of the preceding claims, characterized in that the bottom (34) consisting of flaps (44, 45) connected respectively to the lateral faces by fold lines (46, 47), namely two flaps inner (44) opposite and two opposite outer flaps (45), said bottom comprises two recessed portions (48) in said outer flaps, of shape complementary to that of the tongues (41).
8. Flan (1, 50, 60) de matière en feuille de carton ondulé ou équivalent destiné à former une caisse à section polygonale, comportant :8. Blank (1, 50, 60) of corrugated cardboard sheet material or equivalent intended to form a box with polygonal section, comprising:
- des volets latéraux (2, 3, 4, 5, 6 ; 51 ; 61, 62, 63, 64) reliés entre eux par l'intermédiaire de premières lignes de pliage parallèles,- side flaps (2, 3, 4, 5, 6; 51; 61, 62, 63, 64) interconnected by means of first parallel fold lines,
- un premier ensemble (9, 56, 67) de rabats reliés à un côté desdits volets latéraux par des deuxièmes lignes de pliage orthogonales auxdites premières lignes de pliage, propre à former le fond de la caisse, eta first set (9, 56, 67) of flaps connected to one side of said lateral flaps by second fold lines orthogonal to said first fold lines, suitable for forming the bottom of the box, and
- un second ensemble (10, 53, 69) de rabats reliés à l'autre côté desdits volets latéraux par des troisièmes lignes de pliage orthogonales auxdites premières lignes de pliage, propre à former le couvercle de la caisse, ledit ensemble étant constitué de deux rabats latéraux dits supérieurs (22, 23 ; 71, 72) intercalés avec deux rabats latéraux dits inférieurs (24, 25 ; 73, 74) , lesdits rabats inférieurs comportant chacun une languette (29, 54, 75) découpée d'un côté dans ledit rabat, et reliée de l'autre côté au volet adjacent par une ligne de pliage sensiblement confondue avec la troisième ligne de pliage dudit rabat, les bords périphériques (22.2, 23.2 ; 77) des rabats supérieurs opposés aux troisièmes lignes de pliage comprennant respectivement deux portions de fentes (27, 28 ; 55 ; 78) situées de part et d'autre desdits rabats supérieurs, à une distance déterminée (d., do.) des bords latéraux desdits rabats correspondants, caractérisé en ce que 1 ' extrémité des languettes est en forme de pointe et la longueur desdites languettes d' . entre l'extrémité de la pointe et la ligne de pliage de la languette avec le volet sur lequel elle est fixée, est un peu supérieur à ladite distance ( , do) -- A second set (10, 53, 69) of flaps connected to the other side of said side flaps by third fold lines orthogonal to said first fold lines, suitable for forming the cover of the box, said set consisting of two so-called upper side flaps (22, 23; 71, 72) interspersed with two so-called lower side flaps (24, 25; 73, 74), said lower flaps each comprising a tongue (29, 54, 75) cut from one side in said flap, and connected on the other side to the adjacent flap by a fold line substantially coincident with the third fold line of said flap, the peripheral edges (22.2, 23.2; 77) of the upper flaps opposite to the third fold lines respectively comprising two slit portions (27, 28; 55; 78) located on either side of said upper flaps, at a determined distance (d., do . ) from the lateral edges of said corresponding flaps, characterized in that e the end of the tabs is pointed and the length of said tabs. between the end of the tip and the fold line of the tongue with the flap on which it is fixed, is a little more than said distance (, do ) -
9. Flan selon la revendication 8, caractérisé en ce que chaque demi-fente (78) est prolongée à sa portion d'extrémitée située du coté opposé au bord périphérique extérieur (77) du rabat supérieur correspondant (71, 72) par une ligne sécable ou découpée dans ledit rabat supérieur sur une distance déterminée, ladite ligne sécable ou découpée étant dirigée en biais vers la ligne de pliage (70) du rabat supérieur et vers le bord périphérique latéral9. Blank according to claim 8, characterized in that each half-slot (78) is extended to its end portion located on the side opposite to the outer peripheral edge (77) of the corresponding upper flap (71, 72) by a line breakable or cut in said upper flap over a determined distance, said breakable or cut line being biased towards the fold line (70) of the upper flap and towards the lateral peripheral edge
(79) dudit volet supérieur le plus proche de ladite demi-fente, et étant agencée pour être située au droit du bord correspondant de la languette lorsque la caisse est formée.(79) of said upper flap closest to said half-slot, and being arranged to be located at the right of the corresponding edge of the tongue when the body is formed.
10. Flan selon l'une quelconque des revendications 8 et 9, caractérisé en ce que chaque languette (29) présente sensiblement une forme de T dont la barre est reliée en partie centrale des, parallèlement et de façon légèrement décalée vers l'intérieur du rabat par rapport aux, troisièmes lignes de pliage (20) correspondantes.10. Blank according to any one of claims 8 and 9, characterized in that each tongue (29) has substantially a T-shape whose bar is connected in the central part of, parallel and slightly offset inwardly flap with respect to the corresponding third fold lines (20).
11. Flan selon l'une quelconque des revendications 8 et 9 caractérisé en ce que chaque languette (54, 75) présente sensiblement une forme rectangulaire ou trapézoïdale isocèle se terminant par une partie triangulaire d'angle au sommet obtu.11. Blank according to any one of claims 8 and 9 characterized in that each tongue (54, 75) has substantially a rectangular or isosceles trapezoidal shape ending in a triangular part with an angle at the obtuse apex.
12. Flan selon l'une quelconque des revendications 8 à 11, caractérisé en ce que les côtés latéraux des rabats de fond correspondant aux faces latérales munies de 1 ' autre côté des rabats supérieurs, comportent des échancrures (16 ; 87, 88) de forme complémentaire à celle d'une demi-languette. 12. A blank according to any one of claims 8 to 11, characterized in that the lateral sides of the bottom flaps corresponding to the lateral faces provided on the other side with the upper flaps, include notches (16; 87, 88) of shape complementary to that of a half-tab.
EP95902157A 1993-11-19 1994-11-18 Crate made of sheet material and provided with a lockable lid, and blank for producing same Expired - Lifetime EP0729428B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9313894 1993-11-19
FR9313894A FR2712567B1 (en) 1993-11-19 1993-11-19 Box of sheet material with locking lid and blank for making such a box.
PCT/FR1994/001355 WO1995013968A1 (en) 1993-11-19 1994-11-18 Crate made of sheet material and provided with a lockable lid, and blank for producing same

Publications (2)

Publication Number Publication Date
EP0729428A1 true EP0729428A1 (en) 1996-09-04
EP0729428B1 EP0729428B1 (en) 2002-04-03

Family

ID=9453065

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Application Number Title Priority Date Filing Date
EP95902157A Expired - Lifetime EP0729428B1 (en) 1993-11-19 1994-11-18 Crate made of sheet material and provided with a lockable lid, and blank for producing same

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EP (1) EP0729428B1 (en)
JP (1) JP3654649B2 (en)
AU (1) AU685886B2 (en)
CA (1) CA2176586A1 (en)
CZ (1) CZ144096A3 (en)
DE (1) DE69430319T2 (en)
FR (1) FR2712567B1 (en)
NZ (1) NZ276733A (en)
PL (1) PL314472A1 (en)
WO (1) WO1995013968A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2441817B (en) * 2006-09-12 2011-08-17 Ds Smith Packaging Ltd A blank
JP5834641B2 (en) * 2011-09-02 2015-12-24 凸版印刷株式会社 Packaging box
JP6627362B2 (en) * 2015-09-18 2020-01-08 王子ホールディングス株式会社 Packaging box
JP2021054524A (en) * 2019-10-02 2021-04-08 王子ホールディングス株式会社 Packaging box

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2167917A (en) * 1936-04-29 1939-08-01 Owens Illinois Glass Co Carton
US2451644A (en) * 1946-04-02 1948-10-19 Geoffrey H Wood Container
FR1083621A (en) * 1953-06-19 1955-01-11 Clergeau Papeteries Leon Cutting device for box, American type, cardboard
FR82619E (en) * 1962-09-24 1964-03-20 Packaging for round shaped products
US3272421A (en) * 1964-05-11 1966-09-13 Owens Illinois Inc Self-locking carton
US3302853A (en) * 1965-06-21 1967-02-07 Waldorf Paper Prod Co Container closures
FR2160735B3 (en) * 1971-11-24 1974-07-19 Ici Ltd
US4702408A (en) * 1986-05-23 1987-10-27 The Mead Corporation Bulk bin

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9513968A1 *

Also Published As

Publication number Publication date
DE69430319T2 (en) 2003-04-17
JPH09505018A (en) 1997-05-20
NZ276733A (en) 1997-12-19
AU1111395A (en) 1995-06-06
CZ144096A3 (en) 1997-03-12
AU685886B2 (en) 1998-01-29
PL314472A1 (en) 1996-09-16
WO1995013968A1 (en) 1995-05-26
JP3654649B2 (en) 2005-06-02
FR2712567A1 (en) 1995-05-24
DE69430319D1 (en) 2002-05-08
EP0729428B1 (en) 2002-04-03
CA2176586A1 (en) 1995-05-26
FR2712567B1 (en) 1996-01-12

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