EP0876281B1 - Set of blanks, box, method and machine for making a box from said set of blanks - Google Patents

Abstract

PCT No. PCT/FR97/00113 Sec. 371 Date Jul. 21, 1998 Sec. 102(e) Date Jul. 21, 1998 PCT Filed Jan. 21, 1997 PCT Pub. No. WO97/27114 PCT Pub. Date Jul. 31, 1997A set of blanks, a box, a method and a machine for making a packaging box that includes at least two blanks made of a fiberboard or corrugated fiberboard sheet material, i.e. a first blank comprising a series of at least four flaps for forming the side walls of the box, and a second blank comprising at least two panels joined together along a third fold line. The second blank straddles at least one fold line of the first blank, the first panel is attached to and/or centred on the first blank, and at least one of the second panels is attached to the first blank via means that enable movement of the second panels relative to the first blank when the box is formed by simultaneously wrapping said blanks around a volume having a predetermined size.

Description

The present invention relates to a set of cutouts for making up a packaging box of the type comprising at least two cutouts of material in cardboard sheet or corrugated cardboard, namely a first cut comprising a series of at least four main components ending with a tongue fixing, said main flaps being connected between them via first fold lines parallel to each other, directly or by through intermediate flaps, and provided on one side of a first series of flaps connected to said series of main shutters by second fold lines perpendicular to said first fold lines, said series of shutters being clean to form a wall belt for the box and a second cut with at least two panels interconnected by a third fold line, know a first panel and one or more seconds panels.

It also relates to a box obtained with a such a set of cuts, as well as the process and machine for the manufacture of such a box.

It finds a particularly application important although not exclusive in the field of reinforced boxes in corrugated cardboard, as well as in field of value-added boxes for example from type comprising a spout or a wall of blocking of the bulk products it contains, after opening.

We already know (US-A-5.108.028) boxes reinforced including a set of cutouts of this type.

We also know (DE 24 33 721) a set of blanks according to the preamble of claim 1 to form a double wall box.

Such boxes have drawbacks.

Indeed, they are not formable mechanically easily and do not allow a sufficient rigidity.

The present invention overcomes these disadvantages.

It aims to provide a set of cutouts, a box, method and machine for manufacturing box responding better than those previously known to the requirements of the practice in particular in that it allows efficient and quick automatic assembly boxes without practically generating waste, despite strong cadences.

The boxes obtained also have a high rigidity and great resistance to compression and destruction.

To this end, the invention proposes in particular a set of cutouts for the constitution of a packaging box of the type described above, in which the second cutout is located astride on at least one fold line of the first cutout, the first panel being fixed and / or centered on the first cut,
characterized in that said or at least one of said second panels is fixed to said first cut by means arranged to allow the relative movement of said second panel (s) relative to the first cut during the formation of the box by simultaneous winding of said cutouts previously joined together around a volume of determined dimensions, and
in that the third fold line or lines of the second cut are provided and are placed with respect to the fold line or lines of the corresponding first cut, to allow said simultaneous winding by catching up the excess thicknesses of the cardboard sheets.

The fold lines according to the invention are simple, that is to say capable of forming an edge whose the ridge is unilinear.

• les moyens agencés pour autoriser le mouvement relatif comprennent une portion prédécoupée dans ledit second panneau ou dans le volet en vis à vis, et un évidement prolongeant, et de forme complémentaire avec ladite portion prédécoupée qui est fixée de façon inamovible au volet de la première découpe ou au second panneau en vis à vis, pour permettre le rattrapage des surépaisseurs par glissement de ladite portion dans le plan et dans ledit évidement lors de l'enroulement.

In advantageous embodiments, use is made of one and / or the other of the following arrangements:

• the means arranged to authorize the relative movement comprise a pre-cut portion in said second panel or in the opposite shutter, and an extending recess, and of complementary shape with said pre-cut portion which is fixed in an irremovable manner to the shutter of the first cut or to the second panel opposite, to allow the overtaking thicknesses to be taken up by sliding said portion in the plane and in said recess during winding.

• Les moyens agencés pour autoriser le mouvement relatif comprennent des moyens de solidarisation de façon glissante du second panneau dans le plan par rapport à la première découpe lors de l'enroulement ;
• les moyens de solidarisation sont constitués par de la colle à froid, à prise progressive, par exemple des points ou des lignes de colle.

By precut portion means a frangible portion which only holds by a few attachment points with the rest of the flap and which is therefore easily teared off in the plane and / or perpendicular to the plane of said flap or panel.

• The means arranged to allow relative movement comprise means for slidingly securing the second panel in the plane relative to the first cut during winding;
• the joining means are constituted by cold glue, with progressive setting, for example points or lines of glue.

• Les première et deuxième découpes sont fixées l'une à l'autre uniquement par l'intermédiaire de portion prédécoupées, arrachables.

By progressive setting adhesive means an adhesive which remains pasty for a few seconds, for example 30 seconds, thereby allowing it to slide before final and irremovable joining between cuts.

• The first and second cutouts are fixed to each other only by means of pre-cut, tear-off portions.

• les panneaux de la deuxième découpe sont en vis à vis des volets de la première découpe ;
• l'ensemble de découpes comporte deux deuxièmes découpes ;
• la deuxième découpe comporte une suite de rabats reliée au panneaux par des quatrièmes lignes de pliage perpendiculaires aux troisièmes lignes de pliage ;
• la première découpe est munie d'une deuxième suite de rabats située de l'autre côté des volets principaux par rapport à la première suite de rabats, reliée audits volets par des cinquièmes lignes de pliage parallèles aux deuxièmes lignes de pliage ;
• au moins un panneau de la deuxième découpe est en vis à vis d'un rabat ;
• la deuxième découpe comporte une suite d'au moins trois panneaux dont un bord longitudinal de ladite suite de panneaux est adjacent aux cinquièmes lignes de pliage et la première découpe comprend en vis à vis de ladite suite de panneaux, une portion longitudinale de plus faible largeur, délimitée d'un côté longitudinal par lesdites cinquièmes lignes de pliage et prédécoupée sur son autre côté longitudinal et sur ses deux côtés latéraux ;
• la deuxième découpe comporte un panneau central en vis à vis d'un premier volet principal de la première découpe, dont le bord longitudinal supérieur est situé à une distance déterminée d de la cinquième ligne de pliage correspondant audit premier volet, ledit panneau central comprenant de part et d'autre, en vis à vis de deux seconds volets principaux situés de part et d'autre dudit premier volet, deux panneaux secondaires symétriques par rapport audit panneau central, non fixés à la première découpe, sensiblement en forme de quart de cercle, chacun terminé du côté opposé à ladite cinquième ligne par un téton s'étendant radialement en saillie vers l'extérieur sur une distance sensiblement égale ou inférieure à d, ledit volet principal étant quant-à-lui découpé en vis à vis le long de ses premières et cinquièmes lignes de pliage ;
• la deuxième découpe comporte une languette de fixation reliée au panneau adjacent par une troisième ligne de pliage et s'étendant le long d'une partie seulement du panneau adjacent correspondant, en vis à vis d'une partie de, ou décalé par rapport à, la languette de fixation de la première découpe ;
• la deuxième découpe comporte une languette de fixation reliée au panneau adjacent par une troisième ligne de pliage et située sur le côté opposé à celui de la languette de fixation de la suite de volets de la première découpe, à l'extérieur de ladite première découpe ;
• la deuxième découpe comporte une languette de fixation reliée au panneau adjacent par une troisième ligne de pliage, située sur le même côté et en vis à vis de la languette de fixation de la suite de volets de la première découpe, et de plus grande largeur ;
• la première découpe présente huit volets, à savoir quatre volets principaux séparés entre eux par des volets secondaires propres à former des coins coupés de la boíte ;
• une découpe est en carton ondulé et l'autre est en carton plat ;
• la première découpe est située ou agencée pour être située à l'extérieur de la ou des deuxièmes découpes lorsque la boíte est formée ;
• la première découpe est située ou agencée pour être située à l'intérieur de la ou des deuxièmes découpes lorsque la boíte est formée.

Such an arrangement allows the subsequent separation of the elements of the box thus formed, by transverse tearing of one relative to the other, then removal from the top or from the bottom of one relative to the other;

• the panels of the second cut are opposite the flaps of the first cut;
• the set of cuts comprises two second cuts;
• the second cut has a series of flaps connected to the panels by fourth fold lines perpendicular to the third fold lines;
• the first cut is provided with a second series of flaps located on the other side of the main flaps relative to the first series of flaps, connected to said flaps by fifth fold lines parallel to the second fold lines;
• at least one panel of the second cut is opposite a flap;
• the second cut comprises a series of at least three panels of which a longitudinal edge of said series of panels is adjacent to the fifth fold lines and the first cut comprises, opposite said series of panels, a longitudinal portion of narrower width , delimited on a longitudinal side by said fifth fold lines and precut on its other longitudinal side and on its two lateral sides;
• the second cut comprises a central panel opposite a first main flap of the first cut, the upper longitudinal edge of which is located at a determined distance d from the fifth fold line corresponding to said first flap, said central panel comprising on either side, facing two second main flaps located on either side of said first flap, two secondary panels symmetrical with respect to said central panel, not fixed to the first cut, substantially in the shape of a quarter of a circle , each terminated on the side opposite to said fifth line by a stud extending radially projecting outward over a distance substantially equal to or less than d , said main flap being in turn cut facing each other along its first and fifth fold lines;
• the second cutout comprises a fixing tab connected to the adjacent panel by a third fold line and extending along only part of the corresponding adjacent panel, facing a part of, or offset from, the fixing tab of the first cut;
• the second cut has a fixing tab connected to the adjacent panel by a third fold line and located on the side opposite to that of the fixing tab of the series of flaps of the first cut, outside said first cut;
• the second cut has a fixing tab connected to the adjacent panel by a third fold line, located on the same side and opposite the fixing tab of the series of flaps of the first cut, and of greater width;
• the first cut has eight flaps, namely four main flaps separated from each other by secondary flaps suitable for forming cut corners of the box;
• one cut is in corrugated cardboard and the other is in flat cardboard;
• the first cut is located or arranged to be located outside of the second cut or cuts when the box is formed;
• the first cut is located or arranged to be located inside the second cut or cuts when the box is formed.

The invention also provides a box obtained with the set of cutouts as described above.

Such a box is rigid, not foldable if it is only by destroying it.

It also makes it possible to obtain a polygonal section packaging box, formed from at least two cutouts of cardboard or corrugated sheet material, namely a first cutout comprising a series of at least four main components completed. by a fixing tab, said main flaps being interconnected via first fold lines parallel to each other, directly or via intermediate flaps, said series of flaps forming the walls of the box and being connected one side to a first series of flaps by second fold lines perpendicular to said first fold lines, said series of flaps forming the bottom of said box, and a second cut having at least two panels connected together by a third fold line , namely a first panel and one or more second panels, said second cut forming a reinforcement or a cover for said box, characterized
in that the first panel is fixed to the first cut, the second cut being located astride at least one fold line of the first cut, and
in that the or at least one of said second panels is fixed to said first cut by means of arranged to allow the relative movement of said second panel (s) relative to the first cut during the formation of the box, said box being formed by simultaneous winding of the blanks thus previously secured around a volume of determined dimensions, the third fold line or lines of the second cut being superimposed on the corresponding fold lines of the first cut.

Advantageously, the second cut comprises a outwardly pivoting portion, in part top of a wall of the box forming a beak pourer.

In another advantageous embodiment, the second cut has a series of panels top edge adjacent to the top edge of at least three adjacent walls of the box, suitable for forming an upper internal reinforcement, and the first cut has a pivoting cover portion facing screw, fitting onto said upper internal reinforcement of the box.

The invention also provides a method for producing a packaging box of polygonal section of the type described above,
characterized in that
the second flat cut is fixed at least in part on the first flat cut by positioning the third fold line (s) of the second cut offset from the fold lines of the first cut to allow the extra thicknesses to be caught up sheets of cardboard, and the box is formed by simultaneous winding of the cutouts around the volume of determined dimensions, the first panel being held fixedly relative to the first cut and the second panel (s) sliding relative to the first cut during the winding.

Advantageously, the second cut is placed on the first cut by fixing at least a second panel on the first cut by means of solidarity allowing the relative movement of the or said second panels with respect to the first cutting.

In an advantageous embodiment, the cutouts are fixed together at the level of the second panels provisionally slippery, for example with cold setting adhesive progressive.

• des moyens de positionnement de la deuxième découpe sur la première découpe, la ou les troisièmes lignes de pliage de la deuxième découpe étant prévues et placées par rapport aux premières ou deuxièmes lignes de pliage de la première découpe de façon décalée pour permettre l'enroulement autour dudit volume de dimensions déterminées desdites découpes en rattrapant les surépaisseurs des feuilles de carton,
• des moyens de fixation par collage d'au moins un second panneau sur la première découpe autorisant le mouvement relatif du ou desdits seconds panneaux par rapport à la première découpe, la deuxième découpe étant située à cheval sur au moins une ligne de pliage, et
• des moyens de formation de la boíte par enroulement des découpes ainsi solidarisée autour d'un volume de dimensions déterminées, permettant le glissement du ou des seconds panneaux par rapport à la première découpe.

The invention also provides a machine for producing a packaging box of polygonal section of the type described above,
characterized in that it comprises

• means for positioning the second cut on the first cut, the third fold line (s) of the second cut being provided and placed with respect to the first or second fold lines of the first cut offset to allow winding around of said volume of determined dimensions of said cuts by taking up the excess thicknesses of the cardboard sheets,
• means for fixing by gluing at least one second panel to the first cut allowing the relative movement of the said second panel (s) relative to the first cut, the second cut being located astride at least one fold line, and
• means for forming the box by winding the blanks thus secured around a volume of determined dimensions, allowing the sliding of the second panel or panels relative to the first blank.

• il est prévu des moyens de fixation par collage du premier panneau sur la première découpe,
• le volume de dimensions déterminées est un mandrin de section polygonale ;
• la machine est agencée pour que le volume de dimensions déterminées soit constitué par les produits à emballer ;
• les moyens de fixation par collage des seconds panneaux de la deuxième découpe sur première découpe comprennent des injecteurs de colle à froid à prise progressive ;
• chaque découpe comprenant une languette de fixation située à l'extérieur et à l'extrémité opposée de la suite de volets ou de panneaux de l'autre découpe, la machine comporte des moyens de pliage de la languette de la deuxième découpe sur le volume de dimensions déterminées, au niveau de la jonction entre les parois de la boíte, des moyens d'application du volet des première et deuxième découpes en vis à vis sur ladite languette, des moyens de prépliage de la languette de la première découpe autour de la troisième ligne de pliage de la languette de la deuxième découpe et d'application définitive de ladite languette sur la paroi en vis à vis de la boíte ;
• chaque découpe comprenant une languette de fixation située du même côté de la suite de volets ou panneaux respectifs, en vis à vis l'une de l'autre, au niveau de la jonction entre les parois de la boíte, la languette de fixation de la première découpe étant de plus grande largeur que la languette de la deuxième découpe de sorte qu'elle est en saillie vers l'extérieur de cette dernière, ladite machine comporte des moyens de prépliage des deux languettes ensemble autour du volume, des moyens d'application au niveau de la languette de la première découpe, et des moyens d'application de la languette de la deuxième découpe, pour application successive des deux languettes préalablement encollée se chevauchant, sur la ou les parois en vis à vis de la boíte.

In advantageous embodiments, use is made of one and / or the other of the following arrangements:

• fixing means are provided by gluing the first panel to the first blank,
• the volume of determined dimensions is a mandrel of polygonal section;
• the machine is arranged so that the volume of determined dimensions is constituted by the products to be packaged;
• the means for fixing by gluing the second panels of the second cut on the first cut comprise cold glue injectors with progressive setting;
• each cut including a fixing tab located outside and at the opposite end of the series of shutters or panels of the other cut, the machine comprises means for folding the tab of the second cut on the volume of determined dimensions, at the junction between the walls of the box, means for applying the flap of the first and second cutouts facing said tongue, means for pre-folding the tongue of the first cutout around the third fold line of the tongue of the second cut and final application of said tongue on the wall opposite the box;
• each cutout comprising a fixing tab located on the same side of the series of respective flaps or panels, facing each other, at the junction between the walls of the box, the fixing tab of the first cut being wider than the tongue of the second cut so that it projects outwards from the latter, said machine comprises means for pre-folding the two tabs together around the volume, application means at the level of the tongue of the first cut, and means for applying the tongue of the second cut, for successive application of the two overlapping previously glued tabs, on the wall or walls facing the box.

The invention will be better understood on reading the description of the embodiments given below by way of nonlimiting example.

• Les figures 1 et 1' montrent un premier mode de réalisation d'un ensemble de découpes selon l'invention, en vue de dessus et en coupe longitudinale.
• La figure 2 est une vue en coupe de la boíte obtenue avec l'ensemble de découpes de la figure 1.
• La figure 2' est une vue partielle a grande échelle d'un angle de la boíte de la figure 2.
• Les figures 2A, 2A' et 2B, 2B' sont des vues en coupe, respectivement des deuxième et première découpes de la figure 1 prises isolément, d'une part conformées en boíte et d'autre part développées à plat, faisant apparaítre les différences de largeur des volets ou panneaux et les décalages entre lignes de pliage.
• La figure 3 est une vue en perspective de la boíte obtenue avec l'ensemble de la figure 1.
• Les figures 4 et 5 montrent un deuxième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte, en coupe, obtenue avec un tel ensemble.
• Les figures 6 et 7 montrent un troisième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte, en perspective, obtenue avec un tel ensemble.
• Les figures 8 et 9 montrent un quatrième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte, en coupe, obtenue avec un tel ensemble.
• Les figures 10 et 11 montrent un cinquième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte obtenue avec un tel ensemble en perspective.
• Les figures 12 et 13 montrent un sixième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte, en coupe, obtenue avec un tel ensemble.
• Les figures 14 et 15 montrent un septième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte, en coupe, obtenue avec un tel ensemble.
• Les figures 16 et 17 montrent un huitième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte, en coupe, obtenue avec un tel ensemble.
• Les figures 18 et 19 montrent un neuvième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte, en coupe, obtenue avec un tel ensemble.
• Les figures 20 et 21 montrent un dixième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte, en perspective, obtenue avec un tel ensemble.
• Les figures 22 et 23 montrent un onzième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte, en coupe, obtenue avec un tel ensemble.
• Les figures 24 et 25 montrent un douzième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte, en perspective, obtenue avec un tel ensemble.
• Les figures 26 et 27 montrent un treizième mode de réalisation respectivement d'un ensemble de découpes selon l'invention, et d'une boíte, en perspective, obtenue avec un tel ensemble.
• La figure 28 montre les quatre étapes terminales du procédé de fabrication d'une boíte selon un mode de réalisation de l'invention.
• La figure 29 montre les quatre étapes terminales du procédé de fabrication d'une boíte selon un autre mode de réalisation de l'invention
• La figure 30 est une vue latérale schématique en élévation d'une machine de fabrication d'un ensemble de découpes selon l'invention.
• La figure 31 est une vue schématique, latérale en élévation d'un premier mode de réalisation d'une machine selon l'invention.
• La figure 32 est une vue schématique, latérale en élévation d'un second mode de réalisation d'une machine selon l'invention.

It refers to the accompanying drawings in which:

• Figures 1 and 1 'show a first embodiment of a set of cutouts according to the invention, in top view and in longitudinal section.
• Figure 2 is a sectional view of the box obtained with the set of cutouts in Figure 1.
• Figure 2 'is a partial large-scale view of an angle of the box of Figure 2.
• Figures 2A, 2A 'and 2B, 2B' are sectional views, respectively of the second and first cutouts of Figure 1 taken in isolation, on the one hand shaped box and on the other developed flat, showing the differences width of the shutters or panels and the offsets between fold lines.
• Figure 3 is a perspective view of the box obtained with the assembly of Figure 1.
• Figures 4 and 5 show a second embodiment respectively of a set of blanks according to the invention, and a box, in section, obtained with such an assembly.
• Figures 6 and 7 show a third embodiment respectively of a set of blanks according to the invention, and a box, in perspective, obtained with such an assembly.
• Figures 8 and 9 show a fourth embodiment respectively of a set of blanks according to the invention, and a box, in section, obtained with such an assembly.
• Figures 10 and 11 show a fifth embodiment respectively of a set of blanks according to the invention, and a box obtained with such an assembly in perspective.
• Figures 12 and 13 show a sixth embodiment respectively of a set of blanks according to the invention, and a box, in section, obtained with such an assembly.
• Figures 14 and 15 show a seventh embodiment respectively of a set of cutouts according to the invention, and a box, in section, obtained with such an assembly.
• Figures 16 and 17 show an eighth embodiment respectively of a set of cutouts according to the invention, and a box, in section, obtained with such an assembly.
• Figures 18 and 19 show a ninth embodiment respectively of a set of cutouts according to the invention, and a box, in section, obtained with such an assembly.
• Figures 20 and 21 show a tenth embodiment respectively of a set of blanks according to the invention, and a box, in perspective, obtained with such an assembly.
• Figures 22 and 23 show an eleventh embodiment respectively of a set of cutouts according to the invention, and a box, in section, obtained with such an assembly.
• Figures 24 and 25 show a twelfth embodiment respectively of a set of blanks according to the invention, and a box, in perspective, obtained with such an assembly.
• Figures 26 and 27 show a thirteenth embodiment respectively of a set of blanks according to the invention, and a box, in perspective, obtained with such an assembly.
• Figure 28 shows the four final stages of the manufacturing process of a box according to an embodiment of the invention.
• Figure 29 shows the four final stages of the manufacturing process of a box according to another embodiment of the invention
• Figure 30 is a schematic side elevation view of a machine for manufacturing a set of blanks according to the invention.
• Figure 31 is a schematic side elevational view of a first embodiment of a machine according to the invention.
• Figure 32 is a schematic side elevational view of a second embodiment of a machine according to the invention.

In the following description, we will use the same reference numbers to designate items identical box and / or cutouts.

Figures 1, 1 ', 2, 2', 2A, 2B, 2A ', 2B' and 3 show a set 1, or different elements of a set of cutouts in corrugated cardboard sheets double-sided, for example 2 mm thick.

This set 1 comprises a first cut 2 in thin line in Figure 1 and a second cut 3 in a stronger line, superimposed on the first cutting.

The first cut contains a series of four rectangular shutters 4, for example two large flaps arranged alternately with two small shutters, the shutters being interconnected by first fold lines 5 parallel to each other and shown in thin dashed lines in the figure, the series of flaps 4 being able to form the walls external 4 'of the parallelepiped box 1' to four sides (see Figures 2 and 3).

The series of shutters 4 is provided on each side with flaps, namely a first series of flaps rectangular 6 connected to a series of shutters by second fold lines 7, and intended to form the closed bottom 6 '(see Figure 3) of the box including two flaps come into contact by their outer edge, and a second series of flaps 8, identical to the flaps 6, connected to the adjacent flaps by fifths fold lines 9, and intended to form the cover 8 'from box 1'.

The second cut 3 has four panels rectangular, roughly the same size as the corresponding components, namely a first 10 central rectangular panel and three panels secondary rectangles 11, 12 and 13, connected between them by third fold lines 14, namely two panels 12 and 13 connected on either side to the central panel 10 and an end panel 11 connected on the other side of panel 12.

The first panel 10 is centered and for example fixed irremovably on a main flap 4 by collage, for example with dots or lines (not shown) hot glue called "Hot melt" in Anglo-Saxon language.

FIGS. 2A, 2A ', 2B and 2B' are shown the respective dimensions or width between fold lines of cuts 2 and 3.

These are arranged to catch up with extra thicknesses during folding.

Li₁ :

distance entre les faces internes de deux parois opposées en vis à vis de la première découpe de la boíte formée.

Le₁ :

distance entre les faces externes desdites parois de la première découpe.

li₁ :

distance entre les faces internes des deux autres parois en vis à vis de la première découpe de la boíte formée.

le₁ :

distance entre les faces externes desdites autres parois de la première découpe.

e₁ :

épaisseur de la première découpe

P₁ :

largeur de la languette de fixation d'extrémité.

Li₂ :

distance entre les faces internes de deux parois en vis à vis de la deuxième découpe de la boíte formée.

Le₂ :

distance entre les faces externes desdites parois de la deuxième découpe.

li₂ :

distance entre les faces internes des deux autres parois en vis à vis de la deuxième découpe de la boíte formée.

le₂ :

distance entre les faces externes desdites parois de la deuxième découpe.

e₂ :

épaisseur de la deuxième découpe.

More specifically (see Figures 2A, 2A ', 2B and 2B') or

Li ₁ :

distance between the internal faces of two opposite walls opposite the first cutout of the box formed.

The ₁ :

distance between the external faces of said walls of the first cut.

li ₁ :

distance between the internal faces of the two other walls opposite the first cut of the box formed.

the ₁ :

distance between the external faces of said other walls of the first cut.

e ₁ :

thickness of the first cut

P ₁ :

width of the end fixing tab.

Li ₂ :

distance between the internal faces of two walls opposite the second cutout of the box formed.

The ₂ :

distance between the external faces of said walls of the second cut.

li ₂ :

distance between the internal faces of the other two walls opposite the second cutout of the box formed.

the ₂ :

distance between the external faces of said walls of the second cut.

e ₂ :

thickness of the second cut.

• pour la première découpe :
  • entre le bord 16 du premier volet 4 et la première ligne de pliage 5 : Li₁ + e₁
  • entre les deux lignes de pliage 5 du deuxième volet : li₁ + e₁
  • entre les deux lignes de pliage 5 du troisième volet : Li₁ + e₁
    et
  • entre les deux lignes de pliage 5 du quatrième volet : li₁
• pour la deuxième découpe:
  • entre le bord 17 du second panneau 11 et la troisième ligne de pliage 14 : Li1 + 0,5 × (e1-e2) - P1
  • entre les deux lignes de pliage 14 du panneau 12 : li1-e2
  • entre les deux lignes de pliage 14 du premier panneau 10 : Li₁ - e₂
    et
  • entre la ligne de pliage 14 et le bord d'extrémité 18 du second panneau 13 : li₁ - e₁ - (0,5 × e₂)

In the embodiment of the invention more particularly described here, the following relationships arise: Li 1 = Li 2 + 2nd 2 li 1 = li 2 + 2nd 2 The distances between the first or third fold lines are also indicated in FIGS. 2B 'and 2A', and are respectively

• for the first cut:
  • between the edge 16 of the first flap 4 and the first fold line 5: Li ₁ + e ₁
  • between the two fold lines 5 of the second flap: li ₁ + e ₁
  • between the two fold lines 5 of the third flap: Li ₁ + e ₁
    and
  • between the two fold lines 5 of the fourth flap: li ₁
• for the second cut:
  • between the edge 17 of the second panel 11 and the third fold line 14: Li 1 + 0.5 × (e 1 -e 2 ) - P 1
  • between the two fold lines 14 of the panel 12: li 1 -e 2
  • between the two fold lines 14 of the first panel 10: Li ₁ - e ₂
    and
  • between the fold line 14 and the end edge 18 of the second panel 13: li ₁ - e ₁ - (0.5 × e ₂ )

The fold lines 14 of the first panel 10 are also placed at equal distance x from the fold lines 5 of the panel 4 (cf. FIG. 1 ′).
He comes : x = Li 1 + e 1 - (Li 1 -e 2 ) 2 is : x = e 1 + e 2 2

The other distances between the fold lines are obtained simply by stacking dimensions.

As we have seen, the panel 10 is therefore extended on each side by two second panels 12 and 13 covering the adjacent flaps 4, the continuation of panels being terminated by a final panel secondary 11 substantially coinciding with the last end flap 4 of the first cut.

The other end flap 4 of the first cut is itself extended by a fixing tongue 15, the width P _{1 of which} is substantially equal to that of the part 21 not covered by the panel, of the flap 4 located at l 'other side.

The second cut is therefore located astride the fold lines 5 of the first cut.

In the embodiment more particularly described here, each of the second panels is attached to the first cut by gluing points or lines (not shown) of the cold setting adhesive type progressive, which will allow relative movement second panels compared to the first cutting during the formation of the box by simultaneous winding of the two cuts around a volume of determined dimensions, for example a mandrel, this winding being carried out before setting final glue.

Offsets between third fold lines 14, with respect to the first fold lines 5, allow to catch the extra thicknesses.

In the embodiment described with reference in Figures 1 to 3, the first panel 10 is securely attached to the flap facing screw of the first cut. What matters the species is that the first panel and the shutter be kept motionless against the mandrel during winding.

Another sign, for example a sign end, and its corresponding flap may well heard to be taken as a reference or fixed point when of the winding.

Furthermore, the lower edges 19 and superiors 20 of the series of panels 10, 11, 12 and 13 are located adjacent to fold lines 7 and 9 junction with the series of lower flaps 6 and upper 8 suitable for forming the bottom and the cover of the body, slightly offset, from a distance substantially corresponding to the thickness of the cardboard so that during the formation of the bottom and cover, there is no problem of excess thickness.

As we have seen, the external flap 4 is not entirely covered by the second panel 11, this which leaves a rectangular surface at its end 21 of the same dimension as the tongue 15.

Thus, during the formation of the box (cf. Figures 2A, 2B and 3) the peripheral edge longitudinal external 22 of the tongue 15 comes in end to end of the peripheral edge 17, thus ensuring a double thickness over the whole of the periphery of the box 1 thus formed as seen at 23 in Figure 2.

Figure 4 shows a first cut 2 identical to that of FIG. 1, but reversed, the tongue 15 therefore being located on the other side of the cutting.

In this embodiment, the second cut 24 has here again 4 panels, similarly transverse dimensions as the panels of the second cutout 3 of FIG. 1, namely a first panel 10 secured and fixed on the flap central of the cut, the fold lines 14 being arranged as specified above with reference to Figures 1 to 3, with respect to the fold lines 5 of the first cut.

The second cutout 24 also includes a first end panel 25, which occupies all or substantially all of the surface of the adjacent flap 4 to which it is secured, a second end panel 26, and a fixing tongue 27, connected to said adjacent panel 26 by a third fold line 28, offset to catch the extra thicknesses during folding.
The tongue 27 is located on the side opposite that of the fixing tongue 15 of the first cut 2, projecting outside of said first cut.

Figure 5 shows in section the box 29 obtained with the set of cutouts in Figure 4 after winding around a mandrel.

There is therefore superposition, and fixation, of tabs 15 and 27 with end edges respectively 30 and 31 of shutter 4 and panel 26, at level of the reclosing junction of the box on herself.

Figure 6 shows a set 32 of cutouts, know a first cut 2 and a second cut 33, allowing the body 34 to be made double belt 34 'on four panels of figure 7.

As for the second preceding cuts and more generally, the upper 35 and lower 36 longitudinal edges of the second cut are either slightly offset inwards with respect to the fold lines 7 and 9 of the first cut, by a distance y equal or substantially equal to the thickness of the first cut, either immediately adjacent to or even coincident with these fold lines.

In the latter case, there is therefore depression of the internal edges adjacent to the fold lines of the flaps, when folding the bottom and / or cover, this which surprisingly gives better compressive strength of the packaging.

Such folding with crushing is not otherwise possible because there is a winding around a determined volume.

The panel fixed on the first cut so irremovable being panel 10, the fold lines 14 which are adjacent to it are therefore shifted towards inside the panel with respect to the lines of folding 5 of the first cut, the offsets for the fold lines then succeeding each other as previously described with reference to Figure 1.

The dimensions of the end panels are by elsewhere provided so that the lateral edges 33 ′ and 33 '' of the suite come into contact during the formation of the box, the panels then forming a internal belt joined at its ends.

To do this, the edge 33 'level for example the fold line of the end flap 4 with the tongue 15 and the edge 33 '' is located at a distance equal to around the thickness of the second cutting, from the end edge 4 ′ of said flap 4.

FIG. 8 shows another embodiment of a set of cutouts 37 comprising a first cutout 2 and two second identical cutouts 38 and 38 '.
Each second cut has three panels 39, 40 and 41, the central panel 39 of which is respectively made integral with a large flap 4 of the first cut and whose two small side panels 40 and 41, for example of width equal to a third of the flap of the first adjacent cut, are, for one of the second cutouts (38) mounted to slide relative to the flaps adjacent to the large flap 4, for example by means of cold glue dots, and for the other (38 ') are fixed for one slidably to the adjacent flap 4, and for the other is located outside offset from the first cut.

The box 42 obtained (see Figure 9) thus shows an external belt-like structure provided with two lateral internal reinforcements having a shape of U in section.

Figure 10 shows a set 43 of cutouts according to the invention this time comprising only one second cutout 44 with three panels adjacent, namely a first panel 45 and two second identical panels 46 and 47 located on the side and on the other side of the first panel 45 and connected by fold lines 14 offset from lines folding 5 as previously described, the two second panels covering two small shutters 4.

The fourth main component 4 (large component in example) located towards the outside of the first cutout, on the other side of the fixing tongue 12, is not covered by said second cutting.

FIG. 11 shows the view in perspective of the box 47 obtained with the blank 43, which is therefore reinforced only on its bottom and its side walls, the bottom being constituted by one of the main flaps 4 of the box.

Figure 12 shows another set 48 of cutouts with two second cutouts 49.

The second two cuts are the same type as those described with reference to Figure 8, but focused on the smallest main components and not on the main main shutters, which gives a body 50 reinforced on its two short sides 51 (see figure 13).

Figure 14 shows another set 52 of cuts comprising a first cut 2, and four second identical cuts 53, namely three second cutouts located astride the lines of folding 5 between flaps of the first cut and a fourth second cut at the end, overlapping the peripheral edge 54 of the flap end located on the opposite side of the tongue fixing 15, centered relative to this edge.

The four second cuts are rectangular, formed by two identical panels, 55 and 56, of which one is for example fixed irremovably on the shutter opposite, and the other is secured at least temporarily slippery on the shutter adjacent, the third fold lines 14 being offset from the first fold lines 5 of the first cut, to take into account extra thicknesses.

This gives a case 57, the four of which corners are reinforced by corner angles, as shown in Figure 15.

Figure 16 shows another set 58 of cutouts according to the invention.

In this embodiment the first cut 59 has five main components, the two components end 60 being intended to be superimposed on the level of a rectangular portion 61 forming tongue and extending outward said flaps 60, as shown on box 67 of the figure 17.

This box is fully reinforced by a second cutout 63 provided with five arranged panels according to the invention, namely a first panel 64 by solidarity example of a large part of the first cutting before winding around the mandrel, so irremovable, fitted on one side with a small panel 65 suitable for superimposing and joining together so sliding with one end flap 60, and on the other side of a series of three panels 66, 67 and 68 respectively coming substantially opposite three corresponding components.

FIG. 18 shows an assembly 69 comprising a first cutout 59 identical to that of the figure 16, comprising two second cutouts 38 and 38 ' symmetrically arranged, each second cut comprising three components, namely a first component central 39 and two small side flaps suitable for stand opposite the two end flaps 60 of the first cut, respectively the flap 40 for one and part 41 for the other.

This produces a case 70 conforming to the figure 19 formed of an external belt provided with two internal reinforcements 71 on each side, U-shaped in chopped off.

Figure 20 shows another embodiment of an assembly 72 according to the invention, comprising a first cut 2 and two second cuts 73 provided with a first central panel 74 fixed by bonding and centered with respect to the main flap 4, with which he is substantially confused.

Each second cut also includes, on either side of the first panel 74, two seconds rectangular side panels 75 and 76, symmetrical, with respect to the first panel to which they are connected by fold lines 74 ' parallel to the fifth fold lines 9, offset towards the inside of the panel according to a mode of embodiment of the invention more particularly described here, centered with respect to, and of equal width for example a third of the width of the first panel, arranged to cooperate temporarily with sliding respectively with two flaps facing each other screw of the suites of flaps 6 and 8.

Figure 21 is a schematic view in perspective of the second cutouts 73, of reinforcement, in the box 77 according to the invention, therefore having two large reinforcement panels facing each other glued to a wall of the body and connected to two small panels, centered, perpendicular to the first panel, also glued with provisional possibility slip for example by progressive taking of white glue.

Figure 22 shows another embodiment a set of 78 cutouts, the second of which cutout 79, the flaps of which are identical to those of cutout 2, has flaps 80 on one side only and the first cut 81 of shape identical to that of the second cut 79, at the exception of the mounted end tab reversed from the first cut, has flaps 82 on the other side.

More specifically and for example, the first cutout has a small rectangular flap 85 no attached to the second cutout which is designed and placed so that the side fold lines 14 are offset from fold lines 5 like described with reference to Figure 1 for panel 10.

The cutouts in Figures 22 are reversed by compared to those of Figure 1, the first cut being located in Figure 22 in the foreground by compared to the second cut.

The shutter 85 is connected on both sides and respectively to a large rectangular shutter 86 (86 ') with detachable portions 83 (83'), oval small in relation to the shutter, for example between 1/3 and 1/20 of the surface, for example 1/10, fixed by gluing to the panel of the second cut opposite, the rest of the surface of the flaps 86 (86 ') not being fixed to said second cut.

The flap 86 is connected on the other hand to a fourth part 87 also comprising a portion detachable 88 attached to the second cut, the rest flap 87 being here still free with respect to said second cut.

The detachable portions can be attached to the shutter opposite with cold setting adhesive progressive, for example by dots or dashes glue that will spread when wrapped around the mandrel, not extending beyond the surface of said portion.

In the embodiment more particularly described here each portion 83, 83 'and 88 is fixed by bonding of the "hot melt" type and is extended on the side flap 85 through a recess 84, 84 'and 89 similarly transverse width relative to the series of flaps that said portions, and of sufficient length to make up for slippage in the torn portions transversely during the formation of the box 90 (see figure 23), and therefore the sliding of the shutters 86, 86 'and 87 of the first cut relative to the second.

In other words the portions 83, 83 'and 88, respectively united with a component of the first cutting and tearing off in the plane of the first cut-out during winding in complementary recesses 84, 84 'and 89 in continuation of said portions.

15 'and 15' 'end tabs (equivalent to the tongue 15 of the cutout 2 of the Figure 1) respectively of the second and the first cut, are also planned and are arranged to close as described for example and more precisely with reference to FIG. 28.

In this embodiment, after formation of the box, it is also possible to separate completely the two cutouts, forming two boxes open nested, one of the other by extracting at the portions of their respective recesses by pressure exerted perpendicular to the walls (arrow 90 '), of a cut formed in relation to the other.

As we have seen the portions can be fixed irremovable with recess.

But it is also possible to fix the detachable portions with possibility of sliding during the formation of the box then joining definitive once the box is formed.

In this case, the presence of the recesses allowing catching up on games is therefore not necessary, well that it is always possible to separate the first cut of the second cut once the box formed.

In one embodiment of the invention the pre-cut and tear-off portions are located on the internal side of the box, and will therefore be in contact directly with the mandrel during tearing.

FIG. 24 shows an assembly 91 comprising a first cut 2, and a second cut 92 for close a box 93, for example usable for contain bulk products such as laundry or other.

The second cutout 92 has a central panel 94 opposite a first main flap 4 of the first cut connected on both sides by fold lines 95 offset towards the inside of the panel relative to fold lines 5 of the first cut and two secondary panels 96 and 97 symmetrical about the central panel 94.

The central panel 94 is integral with the flap principal of the first cut, for example by hot melt bonding, peripheral edges upper longitudinal sections 98 of the second cut being adjacent to the fifth fold lines 9 of the first cut.

The first cut includes a longitudinal portion 99 of longitudinal dimension smaller than the dimension of the second cut formed by the panels 94, 96 and 97, for example with a distance 2 × y of a few millimeters.

The second cut thus projects laterally on each side by a distance y for example of 5mm.

It is also higher than the portion 99 which is delimited on one side by said fifth lines 9 of folding and precut on the other longitudinal side 100 and on its two lateral sides 101, so that when the box 93 is formed (cf. figure 25) a cover is obtained partially openable around a joint 102 formed by fold lines 103 located transversely to the flaps of suite 8, perpendicular to fold lines 9 and right lateral sides 101 of the portion 99.

The edges 105 of the opening part 106 of this cover, constituted by the portion 99, fit together over the edges of the end portions 107 of the second cut, the lower part 108 of which is secured to the walls 109 of the box.

Figure 26 shows another set 110 according to a embodiment of the invention comprising a first cut 2 and a second cut 111 having a first central panel 112 rectangular fixed and opposite a first flap main pre-cut in the upper part.

The first panel 112 is connected by a line of folding 113 parallel to the second folding lines 7 to a second identical central panel 114, the longitudinal edge 115 is located at a distance determined d from the fifth fold line 9 corresponding to said first component.

The first central panel includes both on the other, opposite, and fixed so as to catch up on the games on two main second strands located on either side of said first flap, two second rectangular symmetrical panels 116 and 117, connected by fold lines 14 offset as described above with respect to the lines of folding 5.

The second central panel 114 comprises two symmetrical panels or ears 118, 119 in the form of a quarter of a circle, of determined radius, the center 0 of which is located at a distance D from the fifth fold line and of radius r such that D ≥ r + d, and advantageously D = r + d.

In the lower part of the quarter circle, that is to say on the radius parallel to the fifth fold lines and in its extension, each panel 118 and 119 has a stud 120 projecting from the periphery of the quarter circle of substantially height equal to d .

Each of these two secondary panels is not integral with their adjacent main flap, so that they will be able to slide.

The assembly 110 makes it possible to obtain the box 121 with spout 122 of FIG. 27, the panels 118 and 119 being able to pivot frictionally along the inner part 123 of the walls of the corresponding box, their movements being blocked by the pins 120 when the latter come into contact with the upper strip 124 of the box located above the spout and corresponding to a portion of first cut not cut over the distance d above mentioned.

We have shown in Figure 28 the last steps (A, B, C and D) of forming a box 125 according to one embodiment of the invention.

In this case, each cut, namely the first cutting, external, 126 and the second cutting, internal, 127, includes a fixing tab respectively 128 and 129, located outside and at the opposite end of the series of shutters or panels of the other cut.

Pre-fold (step A, arrow 130) the tongue 129 of the second cutout 127 on the module (not shown) of determined dimensions, then apply (step B, arrow 131) the first and second facing cuts on said tongue and the volume of determined dimensions.

The inner end 132 of the end panel 133, previously glued, therefore comes to bear on the outer face of the tongue 129.

Then we fold (step C, arrow 134) the tab 128 of the first cut around the third fold line 135 of the tongue and / or from the peripheral edge of the end panel facing screw of the second cut and we finish (step D, arrow 136) folding the tongue 128, previously glued, from the first cut, that it is applied to the wall 137 opposite the box.

Figure 29 shows the final stages of a manufacturing method according to another mode of embodiment according to the invention of a box of eight sides, made around a mandrel (not shown).

The set includes two cutouts 140 and 141.

Each cutout includes a fixing tab, 142 and 143 respectively, located on the same side of the series of respective and offset shutters or panels relative to each other at the junction between the walls of the box.

The fixing tab 142 of the series of shutters of the first cut 140 is larger width, for example twice as wide, (for example of 6 cm), that the tongue 143 of the second cutout (for example 3 cm wide), so that it protrudes outwards from the latter as shown in Figure 29 (step A).

In order to perform the folding in particular around the cut corner of the mandrel, we also use a specific device 144 allowing pressure in two times.

We first apply a first part 145 of the end flap of the second cut on the mandrel, then we fold around the upper edge of the cut corner, the two tabs 142 and 143 previously glued.

To do this, apply pressure on the tongue 142 of the first cut, by by means of an approximation stop 146 (step B), movable transversely to the mandrel, belonging to device 144, then by through a cut corner 147 (step C).

So we come, apply the tongue 143 on the opposite end panel, back pressure relative to the cut corner of the mandrel, then by a complementary transverse movement (arrow 148) (step D), apply the tongue 142 of the first cut on the outer wall 149 of the packaging, the tab 143 disappearing under the tongue which intersects it forming an angle comprising four thicknesses of cardboard.

Figures 30, 31 and 32 show embodiments of machines for manufacturing in automatic boxes according to the invention.

The machine 150 of FIG. 30 comprises a first device 151 of known type, making it possible to take one by one the first cuts 152, for example by aspiration, from a store 153, for precisely place on a mobile table 154 secured to a frame 155.

Glueers 156, so-called "hot melt" glue or cold glue, of known type, mounted on the frame 155, allow to drop lines or points adhesives on the shutters, where fixing provided with the panels.

A second device 157, similar to the first, allows you to file very precisely, with a accuracy less than a millimeter, the second cut on the first cut which is in abutment on the wedging means 158 ,, after therefore gluing of the latter, on the one hand on the flap 4 opposite main panel screw if applicable, and other share and in the case for example of using the machine with sets of cutouts of the type described with reference to Figure 22, opposite pre-cut portions of secondary panels, with hot melt glue.

The means of depositing the second cut on the first cut, are also specified below.

As we have seen, this bonding system of a pre-cut part of the second cut on the first cut allows the catching up of extra thicknesses by tearing off and sliding at inside a recess in the panel corresponding.

The assemblies thus formed are then evacuated to an intermediate storage 159 of sets of flat cuts.

Figure 31 shows a machine 160 according to the invention for manufacturing a box around a mandrel 161.

The winding assembly around the mandrel is type described in document FR-A-2 629 012, incorporated here by reference, with mobile equipment arm (not shown).

A first device 162 with suction cup gripping by suction allows to bring the first cut 163 from a tank 164 of cuts known in itself, on a moving mat.

A second device 165, of the device type 157, brings the second cut 166.

He places it extremely precisely on the first cut previously glued with means 167 as described above.

Position accuracy of the second cut on the first cut is given, in the example more particularly described here, by the construction a second supply tank or store cutouts of the second device, which is described below.

The second cutouts are placed on their edge and inclined at an angle between 10 ° and 40 ° from vertical, on a 165 'system two or three motorized belts parallel to the direction of displacement.

The feed of the strips is controlled by two feelers 165 "located on either side of the store, in part low cutouts.

Each probe consists of a rod substantially perpendicular to the bands and located at the lower end of the sloping store, on the side from the exit of the second cuts.

Said rod is articulated around an axis lower and provided with a return spring tending to bring back the upper end of the rod slightly protruding above said bands, thus playing the role of a retractable stop when removing the second vacuum cutting.

The probe system enables the cuts in lower reference strictly identical.

The regularity and repeatability of this position gives the precision of depositing the cutout which is then entered in a known manner by aspiration.

A system of mechanical cams and lever arms allows perfect repeatability of the movement of movement of said cut entered by suction between the magazine and the removal position on the first cut.

The set of cuts thus formed is then moved by cart 168, in a manner known therein even under the folding mandrel around which the body is formed in particular through swivel arms that wrap the cutting flaps by folding them around the mandrel and a plate, or other means of pressure, which precisely centers then plate the flap and the bottom panel by with respect to, and on, the lower horizontal force of the mandrel, before closing the flaps forming the bottom of the box by fixing them to the others by gluing, as described in documents FR-A-2 629 012 or FR-A-2 665,137 cited above.

The boxes thus formed are evacuated by ejection for example by pushing inside the mandrel on the formed bottom.

Figure 32 shows another embodiment of the invention which this time comprises two frames, namely a frame corresponding to a machine 150 as described with reference to Figure 30 of manufacturing of die sets, and a machine 170 manufacturing the box itself by winding of the assembly with catching up extra thicknesses.

The two manufacturing machines of the whole cutouts, and forming the box itself can thus be dissociated and placed in different geographic locations unlike of the embodiment of FIG. 31.

The cutout sets 170 are conveyed by example by treadmill 172 known in themselves, at instead of being stored on a pallet.

The boxes thus formed are then removed from way known in itself.

We will now describe in detail a embodiment of the process for manufacturing a box according to the invention by doing more particularly reference to Figures 22, 28 and 31.

The first cut 81, intended to form the outer belt of the box 90 is taken from the store 162 by suction and placed flat at the horizontal, on displacement means known in themselves, the flaps 82 being directed towards the side of the mandrel.

The correctly guided cutout is then brought to the horizontal under the "hot melt" gluing means 167 which inject three dots of glue from above on portions 83, 83 'and 88 of the first cutting.

This is then moved under the store supply of the second blank 81 which is simultaneously entered by suction, then applied on the first cut so that the lines folds 14 of said second cut, provided for, are offset from the lines of folding 5 of the first cut as indicated in the invention.

The two cutouts joined together, only by the portions 83, 83 'and 88, are then moved towards the mandrel. Hot melt lines or dots are placed on the 15 '' tab and the edge end of the panel of the second cut, clean to cooperate with the tongue 15 ′, as well as on the flaps 82 intended to fix the external face of the bottom of the box.

The assembly is brought on a mandrel with four edges (equivalent to chuck 161 with eight edges shown in Figure 31 for a box of eight sides).

The shutter 85 and the corresponding panel are placed under the underside of the mandrel at a determined distance.

They are then gradually reconciled by example by a push plate.

A crew of movable arms wraps around the mandrel the series of flaps 86, 87 on one side, and flap 86 ' and the 15 '' tab on the other side, plating successively flaps 86 and 87, resulting uprooting of the portions 83 and 88 which are embedded in the corresponding recesses 84 and 89, and in pressing the flap 86, causing the tearing of the portion 83 'and its fitting into the recess 84'.

The end of the sequence is that described in reference to figure 28.

The flaps 82 are then successively folded on the bottom of the mandrel by gluing them one on the others in a known manner.

The box is then ejected for example by pushing on the bottom through the mandrel.

We thus obtain a closed box on the bottom and open on the side of the flaps 80.

To fill it, we put it on its bottom consisting of integral flaps 82.

After filling the box can be closed by folding of the small flaps 80 respectively around their fold lines with the panels of the second cut 79, then by folding the two large flaps 80 on the small folded flaps, previously glued, which allows the joining said flaps by gluing.

We then obtain the box formed according to the mode of embodiment of the invention more particularly described here.

As it goes without saying and as it results from elsewhere of the above, the present invention is not limited to more embodiments particularly described.

Claims (42)

1. Set (1, 32, 37, 43, 48, 52, 58, 69, 72, 78, 91, 110) of cut-outs for constituting a packing box, comprising at least two cut-outs made of cardboard sheet material or corrugated cardboard, namely a first cut-out (2, 48, 59, 81, 126, 140) comprising a series of at least four main sections (4; 85, 86, 87, 86') ending in a fixing tab (15, 15", 61), said main sections and said tab being connected together by first folding lines (5) parallel to each other, directly or via intermediate sections, and provided on one side with a first series (6, 82) of flaps connected to said series of main sections by second folding lines (7) perpendicular to said first folding lines, said series of sections being capable of forming a band of walls for the box and a second cut-out (3, 24, 33, 38, 38', 44, 49, 53, 63, 73, 79, 92, 111, 127, 141) comprising at least two panels (10, 11, 12, 13; 25, 26; 39, 40, 41; 45, 46, 47; 49; 55, 56; 64, 65, 66, 67, 68; 74, 75, 76; 94, 96, 97; 112, 114, 116, 117, 118, 119) connected together by a third folding line (14, 74', 95, 113), namely a first panel and one or more second panels,
   said second cut-out being located straddling at least one folding line of the first cut-out, and said first panel being fixed to and/or centred over the first cut-out,
   characterised in that said or at least one of said second panel(s) is fixed to said first cut-out by means (83, 83', 84, 84', 88, 89) arranged so as to permit the relative movement of said second panel(s) with respect to the first cut-out during the formation of the box by simultaneous wrapping of said cut-outs previously secured together around a volume (161) of predetermined dimensions, and
   in that the third folding line(s) (14, 74', 95, 113) of the second cut-out are provided and are placed with respect to the corresponding folding line(s) of the first cut-out, so as to allow said simultaneous wrapping while taking up the surplus thicknesses of cardboard sheet.
2. Set of cut-outs according to Claim 1, characterised in that the means arranged so as to permit relative movement comprise a portion pre-cut from said second panel or from the facing section, and a hollowing out extending, and complementary in shape to, said pre-cut portion, which is fixed immovably to the section of the first cut-out or to the second facing panel, so as to permit the taking up of the surplus thicknesses by sliding said portion in the plane and into said hollowing out during the wrapping.
3. Set of cut-outs according to Claim 1, characterised in that the means arranged so as to permit relative movement comprise means for securing the second panel, in a sliding manner, in the plane relative to the first cut-out during the wrapping.
4. Set of cut-outs according to Claim 3, characterised in that the securing means are constituted by gradually setting cold glue.
5. Set of cut-outs according to any one of the preceding claims, characterised in that the first and second cut-out are fixed together solely by way of tear-off pre-cut portions.
6. Set (1, 32, 37, 43, 48, 52, 58, 69, 78, 91, 110) of cut-outs according to any one of the preceding claims, characterised in that the panels (10, 11, 12, 13; 25, 26; 39, 40, 41; 45, 46, 47; 49; 55, 56; 64, 65, 66, 67, 68; 94, 96, 97; 112, 114, 116, 117, 118, 119) of the second cut-out are facing the sections of the first cut-out.
7. Set (37, 48, 69, 72) of cut-outs according to any one of the preceding claims, characterised in that it comprises two second cut-outs (38, 38', 49, 73).
8. Set (78) of cut-outs according to any one of the preceding claims, characterised in that the second cut-out (81) comprises a series of flaps (82) connected to the panels by fourth folding lines perpendicular to the third folding lines (14).
9. Set (1, 32, 37, 43, 48, 52, 58, 69, 78, 91, 110) of cut-outs according to any one of the preceding claims, characterised in that the first cut-out (2) is provided with a second series (8) of flaps located on the other side of the main sections with respect to the first series of flaps, connected to said sections by fifth folding lines (9) parallel to the second folding lines.
10. Set (72) of cut-outs according to any one of the preceding claims, characterised in that at least one panel (75, 76) of the second cut-out (73) is facing a flap.
11. Set (91) of cut-outs according to Claim 9, characterised

    in that the second cut-out (92) comprises a series of at least three panels (94, 96, 97), of which one longitudinal edge (98) of the series of panels is adjacent to the fifth folding lines (9), and

    in that the first cut-out (2) comprises, facing said series of panels, a longitudinal portion (99) of smaller width, delimited on one longitudinal side by said fifth folding lines and pre-cut on its other longitudinal side (100) and on both its lateral sides (101).
12. Set of cut-outs according to Claim 9, characterised in that the second cut-out (111) comprises a central panel (112, 114) facing a first main section of the first cut-out, of which the upper longitudinal edge (115) is located at a given distance d from the fifth folding line (9) corresponding to said first section, said central panel comprising, on either side, facing two second main sections located on either side of said first section, two symmetrical secondary panels (118, 119), not fixed to the first cut-out, substantially in the shape of a quarter-circle, each one ending, on the side opposite said fifth folding line, in a projection (120) of a height substantially equal to d, and
    in that said first main section (2) is cut out facing this along its first (5) and (9) fifth folding lines.
13. Set of cut-outs according to any one of the preceding claims, characterised in that the second cut-out comprises a fixing tab connected to the adjacent panel by a third folding line and extending along a portion only of the corresponding adjacent panel, facing a portion of, or offset relative to the fixing tab for the first cut-out.
14. Set (126, 127) of cut-outs according to any one of the preceding claims, characterised in that the second cut-out comprises a fixing tab (129) connected to the adjacent panel by a third folding line and located on the side opposite that of the fixing tab (128) of the series of sections of the first cut-out, outside said first cut-out.
15. Set (140, 141) of cut-outs according to any one of Claims 1 to 13, characterised in that the second cut-out comprises a fixing tab (143) connected to the adjacent panel by a third folding line, located on the same side and facing the fixing tab (142) of the series of sections of the first cut-out, and of a greater width.
16. Set of cut-outs according to any one of the preceding claims, characterised in that the first cut-out has eight sections, namely four main sections separated from one another by four intermediate sections capable of forming cut corners of the box.
17. Packing box (1', 29, 34, 42, 47, 57, 60, 62, 70, 77, 90, 93, 121, 125) with a polygonal section, formed from at least two cut-outs made of cardboard sheet material or corrugated cardboard, namely a first cut-out (2, 48, 59, 81, 126, 140) comprising a series of at least four main sections (4, 85, 86, 87, 86') ending in a fixing tab (15, 15", 61), said main sections and said tab being connected together by first folding lines (5) parallel to each other, directly or via secondary sections, said series of sections being a band of walls for the box and being connected on one side to a first series (6) of flaps by second folding lines (7) perpendicular to said first folding lines, said series of flaps forming the bottom of said box, and a second cut-out (3, 24, 33, 38, 38', 44, 49, 53, 63, 73, 79, 92, 111, 127, 141) comprising at least two panels (10, 11, 12, 13; 25, 26; 39, 40, 41; 45, 46, 47; 49; 55, 56; 64, 65, 66, 67, 68; 74, 75, 76; 94, 96, 97; 112, 114, 116, 117, 118, 119) connected together by a third folding line, namely a first panel and one or more second panels, characterised

    in that the first panel is fixed to and/or centred over the first cut-out, the second cut-out being located straddling at least one folding line of the first cut-out, and

    in that the or at least one of said second panel(s) is fixed to said first cut-out by means (83, 83', 84, 84', 88, 89) arranged so as to permit the relative movement of said second panel(s) with respect to the first cut-out during the formation of the box, said box being formed by wrapping the cut-outs previously secured together around a volume of predetermined dimensions, the third folding line(s) of the second cut-out being superimposed over the corresponding folding lines of the first cut-out.
18. Packing box according to Claim 17, characterised in that the means arranged so as to permit relative movement comprise a portion pre-cut from said second panel or from the facing section, and a hollowing out extending, and complementary in shape to, said pre-cut portion, which is fixed immovably to the section of the first cut-out or to the second facing panel, so as to permit the taking up of the surplus thicknesses by sliding said portion in the plane and into said hollowing out during the wrapping.
19. Packing box according to Claim 17, characterised in that the first and second cut-outs are fixed together by gradually setting cold glue.
20. Box according to any one of Claims 17 to 19, characterised in that the first and second cut-out are fixed together solely by way of tear-off pre-cut portions.
21. Packing box (1', 29, 34, 42, 47, 57, 60, 62, 70, 90, 93, 121, 125) according to any one of Claims 17 to 20, characterised in that the panels of the second cut-out are facing the sections of the first cut-out.
22. Box (42, 51, 70, 77) according to any one of Claims 17 to 21, characterised in that it comprises two second cut-outs.
23. Box (90) according to any one of Claims 17 to 22, characterised in that the second cut-out comprises a series of flaps connected to the panels by fourth folding lines perpendicular to the third folding lines.
24. Box according to any one of Claims 17 to 23, characterised in that the first cut-out is provided with a second series of flaps located on the other side of the main sections with respect to the first series of flaps, connected to said sections by fifth folding lines, to form the lid of the box.
25. Box according to any one of Claims 17 to 24, characterised in that at least one panel of the second cut-out is facing a flap.
26. Box (93) according to Claim 25, characterised in that the second cut-out comprises a series of at least three panels, one edge of which is adjacent to the upper edge of at least three adjacent walls of the box, the first cut-out comprising a facing pivoting portion of lid, partly fitting over said adjacent edge.
27. Box (121) according to Claim 25, characterised in that the second cut-out comprises a portion pivoting outwards, in the upper portion of one wall of the box, forming a spout (122).
28. Box according to any one of Claims 17 to 27, characterised in that the second cut-out comprises a rectangular fixing tab connected to the adjacent panel by a third folding line and located on the side opposite that of the fixing tab for the series of sections of the first cut-out.
29. Box according to any one of Claims 17 to 27, characterised in that the second cut-out comprises a fixing tab connected to the adjacent panel located on the same side and facing the fixing tab for the series of sections of the first cut-out, and greater in width than the tab of the second cut-out.
30. Box according to any one of Claims 17 to 29, characterised in that the first cut-out has eight sections, namely four main sections separated from each other by intermediate sections forming the cut corners of the box.
31. Method for producing a packing box of polygonal section from at least two cut-outs made of cardboard sheet material or corrugated cardboard, namely a first cut-out comprising a series of at least four main sections ending in a fixing tab, connected together by first folding lines parallel to each other, said series of sections forming a band of walls for the box and being connected together on one side to a first series of flaps by second folding lines perpendicular to said first folding lines, said series of flaps forming the bottom of said box, and a second cut-out comprising at least two panels connected together by a third folding line, namely a first panel and one or more second panels, said second cut-out forming a reinforcement for said box, characterised in that the second flat cut-out is fixed, at least partly, to the first flat cut-out, and the box is formed by simultaneously wrapping the cut-outs around a volume of predetermined dimensions, the first panel being held in a fixed manner with respect to the first cut-out by causing the second panel(s) to slide relative to the first cut-out during the wrapping, so that after said wrapping the third folding line(s) of the second cut-out are superimposed over the corresponding folding lines of the first cut-out.
32. Method according to Claim 30, characterised in that the second cut-out is placed over the first cut-out while positioning the third folding line(s) of the second cut-out offset with respect to the folding lines of the first cut-out, so as to allow the taking up of the surplus thicknesses, and at least one second panel is fixed to the first cut-out by securing means permitting the relative movement of said second panel(s) with respect to the first one.
33. Method according to Claim 32, characterised in that said second panel(s) are glued to the first cut-out with gradually setting cold glue.
34. Method according to Claim 31, characterised in that said second panel(s) of the second cut-out are fixed to the first cut-out via at least one portion of panel or of section pre-cut from one of said facing second panel or section, detachable from said second panel or section and extending into said second panel or section by a hollowing out and in that said portion is torn away and slides into said hollowing out when the cut-outs are wrapped around the volume of predetermined dimensions.
35. Method according to any one of Claims 31 to 34, characterised in that each cut-out comprising a fixing tab located outside and at the opposite end of the series of sections or panels of the other cut-out, after gluing said tabs, the tab of the second cut-out is folded over the volume of pre-determined dimensions in the area of the junction between the walls of the box, then the section of the first cut-out is applied facing said tab, the tab of the first cut-out is prefolded around the third folding line of the tab of the second cut-out and said tab of the first cut-out is applied to the facing wall of the box.
36. Method according to any one of Claims 31 to 34, characterised in that, each cut-out comprising a fixing tab located on the same side of the series of respective sections or panels facing one another, in the area of the junction between the walls of the box, the fixing tab for the series of sections of the first cut-out having a greater width than the tab of the second cut-out, so that it projects out from the latter, the two tabs, previously coated with glue, are prefolded together around the volume of predetermined dimensions, then the tab of the first cut-out, then the tab of the second cut-out are applied to the facing wall(s) of the box.
37. Machine (150, 170, 160) for producing a packing box with a polygonal section, from at least two cut-outs made of cardboard sheet material or corrugated cardboard, namely a first cut-out comprising a series of at least four main sections ending in a fixing tab, connected together by first folding lines parallel to each other, said series of sections forming a band of walls for the box and being connected on one side to a first series of flaps by second folding lines perpendicular to said first folding lines, said series of flaps forming the bottom of said box, and a second cut-out comprising at least two panels connected together by a third folding line, namely a first panel and one or more second panels, said second cut-out forming a reinforcement for said box, characterised in that it comprises

    means (157, 158, 165) for positioning the second cut-out over the first cut-out, the third folding line(s) of the second cut-out being placed relative to the first or second folding lines of the first cut-out so as to permit wrapping around said volume of predetermined dimensions of said cut-outs while taking up the surplus thicknesses of cardboard sheet so that, after said wrapping, the third folding line(s) of the second cut-out are superimposed over the corresponding folding lines of the first cut-out,

    means (156, 167) for fixing by gluing at least one second panel to the first cut-out permitting relative movement of said second panel(s) with respect to the first cut-out, the second cut-out being located straddling at least one folding line of the first cut-out, and

    means (161) for forming the box by wrapping the cut-outs secured in this way around a volume of predetermined dimensions, permitting the sliding of the second panel(s) with respect to the first cut-out.
38. Machine according to Claim 37, characterised in that the volume of predetermined dimensions is a mandrel (161) of polygonal section.
39. Machine according to Claim 37, characterised in that it is arranged so that the volume of predetermined dimensions is constituted by the products to be packed.
40. Machine according to any one of Claims 37 to 39, characterised in that it comprises means for fixing the second panels of the second cut-out to said first cut-out by gluing with gradually setting cold glue.
41. Machine according to any one of Claims 37 to 40, characterised in that since each cut-out comprises a fixing tab located outside and at the opposite end of the series of sections or panels of the other cut-out, it comprises means for folding the tab of the second cut-out over the volume of predetermined dimensions, in the area of the junction between the walls of the box, means for applying the section of the first and second facing cut-outs to said tab, means for prefolding the tab of the first cut-out around the third folding line of the tab of the second cut-out and for finally applying said tab of the first cut-out to the facing wall of the box.
42. Machine according to any one of Claims 37 to 40, characterised in that, each cut-out comprising a fixing tab located on the same side of the series of respective sections or panels, facing each other, in the area of the junction between the walls of the box, the fixing tab of the first cut-out being greater in width than the tab of the second cut-out so that it projects outwards from the latter, said machine comprises means (144) for prefolding the two tabs together around the volume, means (146) for applying the first cut-out in the area of the tab, and means (147) for applying the tab of the second cut-out, so that application takes place in succession of the two previously glued tabs straddling each other, on the facing wall(s) of the box.

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