FR2641256A1 - CONTAINER WITH FOLDING SHUTTERS SHAPED FROM A PART ORIGINALLY LOCATED LATERLY TO A CARTON BAND - Google Patents

Abstract

The package is intended to enclose at least one object A by the folding of panels and flaps which are part of the same strip of cardboard 1 or similar material, this strip being of the type comprising an area 21 to which two flaps 14 and 15 are fixed by lateral margins 18 and 19, these flaps 14 and 15 and their margins 18 and 19 together constituting a single panel 6 exterior to the actual strip 1, folded onto the said strip 1 and fixed to it by the margins 18 and 19 of the flaps 14 and 15. It is characterised in that the single exterior panel 6 is integral with the strip 1 along a fraction of one 2 of its longitudinal edges 2 or 3 and must be folded back on the internal face of the strip 1 along the said fraction of the longitudinal edge in question 2. According to an advantageous embodiment, a transverse edge 8 of the single exterior panel 6 is aligned with the transverse end 5 of the strip 1.

Description

CONTAINER WITH FOLDING SHUTTERS FORMED FROM

  A PART ORIGINALLY LOCATED LATERALLY AT A

CARTON BAND

  Containers consisting of a strip of cardboard, generally of corrugated cardboard, of rectangular shape and bearing on its so-called "internal" face two flaps arranged facing each other, transversely, over a portion of the strip, are known. whose area constitutes a base on

  which one places the object or objects to be conditioned.

  For this, we raise the shutters that bend up and down in transverse lines to themselves, we put the object or objects on the base, then we flap the shutters

  previously raised so that these, by a trans fold

  reverse direction of the first, that is, from top to bottom,

  apply on objects, parallel to the base.

  Then, we fold the actual tape trans-

  towards itself, that is to say, perpendicular to the direction of the initial folding of the flaps, and the envelope

  the object or objects on all sides, the tape being now

  naked folded by various possible means: adhesive, staples, belting by a link, etc. to constitute a

containing completed.

  The shutters are attached to the base (usually by gluing) by side margins, along the edges

  of the strip, so that after folding of the strip

  here, it appears on the two small "faces" of the container, hollow lined with a "sidewalk" on their four sides and therefore particularly effective for the protection of the

  wrapped objects. Indeed, the small "faces" of the

  are in fact constituted by the fraction of the flaps situated between the inverted folds created respectively

  during the raising and when folding said shutters.

  However, the width of the margins according to which the flaps are fixed to the strip determines the width of the "sidewalk" which carries the small "face" inwards, the strip having, after folding, lateral edges all aligned with each other and

with the outer edge of the margins.

  The structure just described is known in itself and is embodied in practice according to

  more or less sophisticated variants.

  But such a structure must not be analyzed ex nihilo because it can only result, in everyday economic reality, from the implementation of concrete means,

industrial and practical.

  We can not therefore consider a structure, whatever it may be, considering as negligible the means that will be necessary to obtain it. One can always "imagine" processes, mechanisms, movements theoretically possible but remembered they are not very suitable, or even inappropriate, to industrial imperatives. To situate the state of the art, mention may be made of document FR-A-2 563 192 which describes a package consisting of a rectangular strip whose one end is secured to an outer panel carrying the flaps and to be folded transversely then attached to the band itself. Such packaging is economical because it comes from a blank itself rectangular and, therefore, a particularly rational geometry because the blanks are cut into plates, themselves coming from strips in coils, so that by carefully choosing the dimensions of the plates and blanks, we absolutely eliminate

  all the falls of material and one arrives at a produc-

economic and rational

  In practice, however, it has been found that a package

  This type of process has manufacturing disadvantages.

  Indeed, the strips being manufactured are moved into the machine by means of mechanical drive members such as belts or belts.

  rollers. A container of the type covered by this invention

  being obtained from a rectangular band without

  of any part protruding laterally, the organs of

  are necessarily placed on the band itself.

  same, that is to say, where precisely we must fold the panel. To this difficulty, there is added that which comes from the deposit of glue that can not be done as usual since the panel to be glued is, of course, in line with the places where the glue must be deposited. The problem is not insoluble in theory but it is still

  unresolved and it could only be at the cost of

  mechanical incompatibility with the search for a very low cost price, essential for containers of the type

referred to fci.

  The solution to these problems is to modify

existing machines.

  To avoid such a disadvantage, it has adopted a different and simpler manufacturing method because it avoids transforming existing machines: instead of

  move the blank longitudinally, move it transversely

  It is not easy to use the usual belts because it has more space and the end panel to be lifted and folded is placed laterally to the machine. We can then use the ramps, pebbles and

  other common mechanical devices to perform the lifting

  folding, folding and pressing the panel

on glue tapes.

  But we still face difficulties because the layout of the panel at the end of the strip increases the difference between length and width of the blank

before folding the panel.

  Indeed, the blank is poorly maintained because the drive trains obviously can not be on the flip-flop, which must remain free, but they can not be either at the place of the

  tape that must receive this sign. Finally, the courts

  roies are offset laterally by a very large distance, since the distance nearest the panel to be folded is at a distance equal to twice the

width of it.

  It follows from these provisions that the blanks are maintained, guided and moved in a rather mediocre manner and one avoids the incidents (stuffing, placing a blank, skating, etc.) while operating the machine.

  speed reduced compared to its possibilities.

  The deposit of glue tapes necessary for fastening the flaps is more complicated because these ribbons with

  instead of being longitudinal and parallel in the sense of

  on the machine, are transverse to this movement. However, to form a glue strip parallel to the direction of movement of the blank, just a dispensing spout and delay the flow time as a function of the speed of movement, while for. form a ribbon of

  transverse glue, it requires either a nozzle of the same length

  the ribbon to be formed, ie a row of nozzles placed transversely against each other and, in any case, to limit the flow time to a fast jet to create the entire ribbon in a single projection, the flow time increasing the width of the ribbon and not its length. The present invention overcomes the disadvantages mentioned above by reconciling the advantages of a perfectly rectangular blank and the technical requirements of existing machines, all to achieve a container having at least the features and advantages already

  known, these can even be increased thanks to

complementary measures.

  For this purpose, the subject of the invention is a container

  for wrapping at least one object by folding

  flaps and flaps forming part of the same strip of cardboard, or similar material, a strip of the type comprising an area on which there are two flaps fixed to it by lateral margins, these flaps and their margins together constituting a single outer panel to the strip itself, folded over said strip and fixed to it by the margins of the flaps, characterized in that the outer panel is integral with the strip in a fraction of one of its longitudinal edges and is folded on the inner face of the strip along said fraction of the longitudinal edge in question. According to other features of the invention: a transverse edge of the outer single panel is aligned with one of the two transverse ends of the strip; the transverse edges of the outer single panel are remote from the two transverse ends of the strip; the two flaps are determined by cutting lines of the outer single panel, which on the one hand have segments substantially transverse to the flaps, and

  therefore substantially longitudinal to the band, and

  on the other hand at least one connecting segment of the preceding, determining edges which respectively belong to each of the two flaps and which are oriented so that by mutual contact they are geometrically incompatible with the relative spacing of the two flaps, at least on a part of their length; the container comprises a single connecting segment which is rectilinear and oblique; the container comprises at least one connecting segment which has sinuosities; the link segment has a sawtooth path; sinuosities have a rounded top and bottom; - The strip being corrugated cardboard whose grooves are transverse to the strip, and therefore longitudinal flaps, sinuosities have a depth at least equal to one. one and a half times the grooves; the container comprises two connecting segments determining a tab integral with one of the two flaps and a complementary housing in the other flap; the tab has a free end which has a notch; the container comprises two link segments, themselves composed of three fractions angularly shifted, this

  together forming two opposite hooks.

  The invention also relates to a method of manufacturing a container of the above type, characterized in that it consists in determining by cutting and marking in the same plate at least two blanks intended to constitute two identical containers placed head spade and each comprising a rectangular strip and a single side panel, to fold the blanks against each other so that the side panel of each is applied to the strip of the other, to fix said panel to said strip by margins and separating the two containers to make them independent of each other, each of said containers having a band and a panel fixed on it and having two margins

side and two flaps.

  The invention will be better understood by the description

  detailed below with reference to the accompanying drawing. Well

  understood, the description and the drawing are given only

  as an indicative and non-limiting example.

  FIG. 1 is a schematic perspective view showing a container according to the invention, cut and marked with fold lines, before folding the panel

  unique outside on the tape itself.

  FIG. 2 is a schematic perspective view showing a container according to the invention ready to receive

objects to pack.

  Figure 3 is a schematic perspective view illustrating the container of Figure 2 in use

to wrap a book.

  Figure 4 is a schematic view showing the container of Figures 1 to 3 wrapping the book and finishing course.

  FIG. 5 illustrates a particular embodiment

  a container of the type of FIGS. 1 to 4 and by which standard machines can be used for its

  manufacturing, providing the association of two blanks.

  FIG. 6 is a schematic view showing the folding of the two blanks one on the other and their bonding

  to form two complete containers.

  FIG. 7 is a schematic view illustrating the obtaining of two separate complete containers obtained

by dissociation of the two blanks.

  Figures 8-9, 10-11, 12-13, 14-15, 16-17 and 18-

  19 illustrate two by two alternative embodiments of a container according to the invention comprising means

  retaining flaps folded over a packed object.

  FIGS. 20 and 21 are partial diagrammatic views respectively in plan and in section of a sheet of corrugated cardboard used to constitute a container

  according to the invention, these views illustrating a characteristic

  of the invention for cutting flaps.

  FIGS. 22 and 23 are partial diagrammatic views respectively in section and in plan illustrating the

  disadvantages of a random cut of the shutters.

  Figures 24 and 25 are partial schematic sectional views illustrating the benefits of cutting

shutters according to the invention.

  Referring to the drawing, there is shown a container according to the invention which comprises a strip of corrugated cardboard 1 having two longitudinal sides 2 and 3 and two ends respectively 4 and 5 perpendicular to the sides 2 and 3, so that the strip has a perfectly rectangular outline. This band 1 is integral with a single lateral panel 6 determined by two transverse edges 7 and 8, a longitudinal edge 9 and a fold line 10. The two transverse edges 7 and 8 have the same extent which is equal to the width of the band 1, that is to say that the edges 4, 5,

7 and 8 are equal.

  The single panel 6 is marked on the one hand by two folding lines 11 and 12 parallel and separated by a distance x, respectively from the edge 9 and the fold line 10 and secondly from a median cut line 13

determining two flaps 14 and 15.

  So that the single panel 6 remains intact; and does not dissociate along the cut line 13, it is interrupted over short distances 16 and 17 called

"attachment points".

  In the situation of Figure 1, the container according to the invention is absolutely complete since it includes all the parts that are necessary for its use but it is still only virtual because it is necessary that the flaps 14 and 15 are at the plumb of band 1 and preferably

attached to it.

  This is achieved by folding the single panel 6 and folding it along the fold line 10 on the strip 1,

  as indicated by F1 in Figure 1.

  The fold lines 11 and 12 determine margins 18 and 19 of width x intended to be fixed to the band 1, advantageously by gluing. This position is

  represented in dotted lines in FIG.

  To clearly illustrate the folding of the single panel 6, there is shown a small bead 10a on either side of the fold line 10 but in reality, this folding is almost invisible. As we know, corrugated cardboard "double face" is formed of three leaves: two sheets

  flat exterior glued to a corrugated inner sheet.

  The fold line 10, in this case, cuts the flat sheet of the outer face of the strip 1 and the corrugated sheet leaving the flat sheet intact of the inner face of the strip 1, after folding, the wafer is presented as a

  entire cut because we can only discern with great

  the flat sheet folded on itself. The folding is practically invisible and the bead 10a does not exist

not.

  With compact cardboard, one could also achieve a folding face almost invisible face, creating the fold line 10 by mid-cut cut. On the other hand, one could discern the folding if one created the line 10 by creasing because then one causes a repression of the cardboard

and not a break.

  Through a hole 20 which pierces the panel 6, it is possible to insert a finger between the base 20 and the two flaps 14 and 15 to break the attachment points 16-17 and lift the flaps 14 and 15 which separate according to the cutoff line 13 and which straighten up along the lines of

  folding 11 and 12, as indicated by the arrows F2 and F3.

  This position is represented in continuous lines on the

figure 2.

  After separating the flaps 14 and 15 along the cut-off line 13, the flaps each have an edge

  respectively 14a and 15a, transverse to them and therefore long

  tudinal to the band 1. The hole 20 gives birth to two

  notches 20a and 20b on the edges 14a and 15a.

  We see that the part of the so-called "internal" face of the strip 1, located between the transverse edge 5 and a line

  shown in dashed line in Figure 1, constituting

  kills a base 21 which is completely covered by the panel 6 when the latter is folded over it, and which is unmasked according to the surface of the flaps 14 and 15 when these

are raised.

  As is known per se, we have the or * the objects to be wrapped (here a book A) on the base 21

  after straightening flaps 14 and 15, then flip-those

  ci on the book A by folding them closer to its upper edges, along lines 22 and 23 which are preferably premarked, especially if the container is made of corrugated cardboard whose grooves are transverse to the band 1 and therefore perpendicular to the lines 22 and 23, which is the case here (the grooves 24 are visible to tearing of

Figure 1).

  Then, the band 1 is folded transversely to itself in lines which are easily formed, thanks to the grooves 24, to the edges of the volume constituted by the

  book A and flaps 14 and 14 folded over him.

  In Figure 4, we see the finish of the container and we see that the folding of the band 1 gives rise to a large face 30 which is the "external" part of the base

  21, a small face 31 to the right of the face of the book A adaja-

  7 at the edge 7, which now has two separate segments (one on each flap 14-15) substantially along a Z-shaped path, a large face 32 on the part of the flaps 14 and 15 folded on the book A, a small face 33 to right of the face of the book A opposite to the previous one, which is adjacent to the edge 8, which now has two separate segments (one on each flap 14-15) substantially in a Z-course and,

  finally, a flap 34 applied to the large face 30.

  Four of the six faces of a rectangular parallelepiped have thus been constituted, the last two faces being set back from the distance x and constituted by the upturned retaining portion of the flaps 14 and 15. The book A is thus wrapped on all sides and is particularly well protected thanks to the margins 18 and 19 which place the edges 2 and 3 of the band 1 in relief to play, if necessary, the role of shock absorbers

of shocks.

26 4 1256

  To maintain the closed container, as it appears in FIG. 4, various means are available.

well known to those skilled in the art.

  Here, the example which consists in providing an adhesive on the internal face of the strip 1, along its

transverse edge 4.

  For example, it is possible to use a removable protective tape 25 which, after removal, unmasks an adhesive 26, this assembly of known type being put in place as known to the

do the tradesman.

  At the time of packing book A, for example

  in the situation of Figure 3, the protective tape is removed.

  25 to make the adhesive 26 operational. At the end of the wrapping, when the flap 34 is applied to the large face 30, the closure of the container is almost automatically obtained by gluing the flap 34 onto the

face 30 along their entire width.

  Of course, other means can be used, including an adhesive extended at the last moment, not only near the transverse edge 4 but also on the flaps 14 and to immobilize them and prevent accidental lateral sliding. FIG. 5 shows how a container having a blank such as that of FIG.

  however, to create the least fall.

  In a rectangular plate of normal dimensions

  two identical blanks 100 and 200 placed

  spade. These blanks are created by marking cut lines and fold lines which bear the same references as

  those of Figures 1 to 4 but combined with the first

  taine or the second hundred depending on whether they belong

flan 100 or blank 200.

  Of course, depending on the relative dimensions of the rectangular plate and the blanks to be created, it is possible to place more than one pair of blanks since each of these pairs fits into a perfect rectangle. Starting not from a plate but from a coil, we can even make a cut into

continuous or semi-continuous.

  Between the two blanks 100 and 200 of the same pair,

  one creates a longitudinal cut 40 and two trans-

  versales 41 and 42 arranging attachment points 43, 44 and to allow the relative maintenance and subsequent separation of the two blanks 100 and 200 to obtain two

separate containers.

  After being marked as indicated, the cardboard element constituting the pair of blanks 100-200 of FIG. 5 is introduced into a machine of known type having guides and means for driving said element in its longitudinal direction. FIG. 5 mentions the conventional solution of parallel drive belts 300 and 301 located respectively under and on the cardboard element which is thus pinched by them, these being placed approximately in the middle of the width of the blank 200. The machine is provided with nozzles 302 and 303 located

  above the blank 200, in line with the areas

  kill margins 118-218 and 119-219 (corresponding to margins 18 and 19 in Figures 2 and 3). These arrangements are known per se and are associated with an automatically regulated operating adhesive dispensing mechanism. Since the cardboard element is supposed to move in the direction of the arrow F4, the nozzles 302 and 303 first deposit, simultaneously, two strips of adhesive 219a and 218a on the strip 201, where the margins 219 must be glued. and 218 of the panel 206, and then, simultaneously, two strips of adhesive 118a and 119a on the panel 106, where the margins must be glued.

118 and 119 on the tape 101.

  Note that the deposit of the adhesive occurs

  in a classic and simple way: by delaying the mech-

  distribution, with the tapes being parallel

  in the sense of displacement of the cardboard element.

  The belt 300 supports the cardboard member and

  can extend over the entire length of the machine. The courtyard-

  On the other hand, the belt 301 passes over a return pulley (not shown) just before the place where the blank 100 and the panel 206 are to be applied, by straightening then

  folding, on the panel 106 and the blank 200.

  This operation is commonplace with existing machines

  aunts and so-called "gluing folders", so that

will not be described in detail.

  FIG. 6 shematizes this operation: in continuous line is the part which remains parallel to itself on the machine, that is to say the blank 200, comprising the band 201 and the panel 106. In dotted line is the blank 100 comprising the band 101 and the panel 206 in their starting position (the cardboard element is still "flat"). In dotted line and solid line, there are shown two intermediate positions of the blank 100 and the panel 206: they were raised according to the arrow F5 of their original position and are being drawn down according to the arrow F6

  against the blank 200 and the panel 106.

  In reality, these movements are progressive in the direction of movement and the raised part remains stable thanks to guides (stepped rollers, ramps, etc.) and to a longitudinal belt (not shown) which bears in a helicoidal path on the outer face As is known per se, the location of the return pulley of the belt 300, the guides and the helicoidal belt are coordinated. It exerts pressure on the blank to be folded down, pressure having a vertical component which contributes to maintaining not only

  the moving part 100-206 but even the horizontal part 200-

  106 when it escaped the belt 300.

  When the portions 100-206 are applied to the portions 200-106, a pressure mechanism known per se (not shown) ensures the setting of the adhesive, so that

  two complete containers arranged head-to-head

  spade, one 100-106 and the other 200-206. By simple means and within the reach of the skilled person, it is sufficient to separate them by breaking the attachment points 43, 44 and 45. It should be noted that the two folded parts having two hinges that are the fold lines 110 and 210, the attachment points 43 are not essential. This method of manufacture allows to use almost standard machines and as we obtain two containers at a time, at a given speed we have a production

  double and a cost price significantly lower.

  There is a risk of lateral sliding of the flaps 14 and 15. The probability of such an accident is low but not zero because a container according to the invention is

  can be used both for the packaging of an object of

  known for the packaging of different objects, the dimensions of which it fits perfectly. This is why this accident may occur because the conditions

  different. Risks increase when more

  if unfavorable conditions are met: the packed object is heavy, thick, slippery and much shorter than the distance between the two lines 11 and 12,

example.

  With this geometry, the part of the flaps 14 and placed on the objects and applied against them by the folded strip 1 is short while correspondingly the portion of the flaps 14 and 15 rectified is long. Since the object is shorter than the distance between

  lines 11 and 12, it can move more or less brutally-

  during the movements that the container undergoes during its transport and handling. These transverse movements of the object are facilitated if it is slippery, which can

  be the case of books with glossy dust jacket.

  Repeated blows on the flaps 14 and 15 can then result in pushing one of these flaps outwards, its free end escaping its pinch between

  the packaged object and the folded strip 1. Lateral protection

  the object disappears and the object can escape

container.

  To oppose any movement of the flaps 14-15, one can use the solution which consists not only to pinch, tighten, the flaps against the object packaged by the

  folded tape 1, but to stick it to the shutters.

  However, this solution is not easily used.

  sand by providing mechanical conditioning, because then the machine can easily deposit an adhesive on

  the flaps folded, before folding the band 1.

  On the other hand, when the containers according to the invention are used for manual packaging, it is necessary to

  avoid the use of adhesive which can spread accidentally when it is liquid, which can contaminate the packed object if it is

  poorly deposited and dosed etc. This is why, according to the invention, mechanical means are provided on the flaps 14 and 15 so that they are held in position despite any possible constraints on them.

asking for their disunity.

  In FIGS. 8 to 19, there is shown

  variants of the mechanical means for maintaining the shutters and, to simplify the drawing, only

  panel 6, excluding other parts of the container.

  It must be remembered that strands 14 and 15, when

  they are flat, before straightening, are edge to edge (with the example of Figures 1 to 7, the edges are created by a single cut line 13). However, after packaging of the object A, they can no longer be edge to edge because they are each shortened, in the plane parallel to the base 21, of a length at least equal to the thickness of the object A In FIGS. 2 and 3, it can be seen that their original length L is subdivided into a height h corresponding to the thickness of the object A and a remaining length 1. Their edges opposite are therefore more or less spaced according to this thickness. In FIG. 8 it can be seen that the flaps 14 and 15 are differentiated by cutting lines which comprise two substantially transverse segments 50 and 51 and a

oblique connecting segment 52.

  In Figure 9, we see that after separation of the flaps 14 and 15, straightening thereof and folding on the object A, the edges created by the segments 50 and 51 are spaced apart. As for the edges (or edges) created by the connecting segment 52, they are handed against each other when folding the flaps 14 and 15 but given the obliquity

  segment 52, this can only be achieved by

  perpendicular (longitudinal to band 1 and transverse

  sal to the shutters) correlative shutters 14 and 15, spacing made possible thanks to the elasticity of the cardboard and l-a

container structure.

  Thus, the band 1 during its transverse folding, applies closer to the longitudinal edges 7 and 8 of the flaps 14 and 15 (transverse to the band 1) and strongly opposes their lateral spacing because any effort directed laterally ( and therefore transversely to the band 1) tends to separate the flaps 14 and 15, but by the ramp effect of the oblique edges, this lateral force is transformed into a longitudinal force to the band 1 which resists without

  barely the band 1 folded on itself.

  It is noted that the described effect occurs all the more clearly that the flaps 14 and 15 are further apart but the phenomenon is continuous and thus allows to obtain the effect of wedging (or "hanging") for objects AT

of different thicknesses.

2 41256

  FIG. 10 shows another example according to which flaps 14 and 15 are determined by lines of

  section comprising two substantially transverse segments

  the flaps 50 and 51 and two connecting segments themselves having three fractions respectively 53, 54 and 55, 53 ', 54' and 55 'creating a central vacuum 56 and two hooks

  opposed and interpenetrating 57 and 58.

  In FIG. 11, it can be seen that after straightening the flaps 14 and 15 and then folding them down onto the object A, the ends of the flaps have moved apart and, therefore, the hooks 57 and 58 have come closer to each other. to be in contact

  from each other and thus oppose any further spacing

complement of shutters 14 and 15.

  The hooks 57 and 58 giving only one locking position, this variant is only interesting for an object A whose thickness and length are known.

  and correspond as closely as possible to the cooperation

  effective use of hooks 57 and 58.

  Also note that unlike the variant

  Figures 8 and 9, the blocking is strictly perpendicular

* to the lateral effort to fight, without delay

  constraints in a different direction.

  FIG. 12 shows a variant according to which a single link segment 59 has a winding path

  and, more precisely, sawtooth.

  Each flap 14-15 thus has two teeth 60-61

  and 60'-61 '. Before use, all four teeth are engaged.

  In FIG. 13, it can be seen that after straightening the flaps 14 and 15 and then folding them onto the object A, only the teeth 61 and 60 'are engaged, that is to say that this variant, like that of Figures 10 and 11

  only one blocking position and is therefore not

  only for an object A of known dimensions.

  This variant nevertheless has the advantages of that of FIGS. 8 and 9 because the inclination of the edges in contact corresponds to the obliqueness of the connecting segment 52, so that here again the lateral forces exerted on the strip 1 are transferred to flaps 14 and 15: the more the effort is

  intense, the more the blockage is effective.

  FIG. 14 shows a variant close to that of FIGS. 12 and 13 since it is found

  a single link segment 62 in teeth of. saw.

  The flap 14 has three saw teeth 63, 64 and the flap 15 also has three 63 ', 64' and '. In FIG. 15, it can be seen that after straightening the flaps 14 and 15 and then folding them onto the object A, two adjustment possibilities are available according to whether the sawtoothed teeth are two or more in number. a

only by component.

  The setting is not continuous as in the case of Figures 8 and 9 but it is not limited to one

  possibility as in the case of Figures 10 to 13.

  Note that the edges in contact with the sawtooth are no longer oblique but perpendicular to the direction of the

lateral forces.

  This variant thus combines the positive blocking of

  Figures 10 and 11 and a possibility of adjustment.

  It is understood that the greater the number of sawtooth, the greater the number of positions of the flaps 14 and 15

is himself great.

  FIG. 16 shows a variant according to which a single link segment 66 has a sinuous path and no longer a s.cie but in a series of

  tongues with rounded corners and bottoms.

  In FIG. 17, it can be seen that after straightening the flaps 14 and 15 and then folding them down onto the object A, tabs are engaged in greater or smaller number depending on the spacing of the flaps (depending on the value of the

  residual width 1 shown in Figure 3).

  This variant illustrates the possibility given by the invention of adapting a container of given dimensions to objects A of different formats in a gradation

  all the more fine as the number of tongues is large.

  Figure 18 illustrates another variant of the same

  the type in which part of one of the components is

  sounded between two parallel sides of a housing on the other flap, this structure preventing the flaps from moving

  described with reference to Figures 8-9 and 12-13.

  We see that the flaps 14 and 15 are determined

  by cutting lines with three substantial segments

  transversely to the flaps 67, 68 and 69 offset and joined by two serpentine path segments 70 and 71 forming two series of tongues with rounded ends and funds. This constitutes a tab 72 secured to the shutter

  14 and a housing 73 in the flap 15.

  In FIG. 19, it can be seen that after straightening the flaps 14 and 15 and then folding them down onto the object A, tabs of the flap 72 are engaged with tabs of the housing 73 in a greater or lesser number depending on the flap spacing (depending on the value of the width

  residual 1 shown in Figure 3).

  To easily release the shutters. 14 and 15 at

  moment of the introduction of the object A, the tab 72 pre-

  is at its end a notch 74 for inserting a finger.

  These last two variants show that in

  folding the number of sinuosities of the link segment or segments (sawtooth or tongues) we multiply the possibilities

adjustment.

  In fact, this remains in the realm of theory because in practice we quickly come up against a limit because below certain dimensions, the sinuosities escape one.

  the other and let the shutters slide, which is obviously

contrary to the aim pursued.

  This will be well understood by referring to the figures

20 to 25.

  In Figure 20, we see the sinuous course of a link segment of the same type as the segment 66 of

  Figures 16-17 and that segments 70-71 of Figures 18-19.

  For simplicity it is designated by the reference only

66.

  The cut passes through the sheet of corrugated cardboard over its entire thickness and therefore concerns the upper sheet

  plane 80, the corrugated inner sheet 81 and the lower sheet

  planar member 82 and here it is verified that the axis of the segment 66 is parallel to the axis of the corrugations of the corrugated sheet 81. If the depth P1 of the tongues and the position of the segment 66 are determined indifferently, by

  example, by retaining, without more precision, that the profunda-

  Pl must be "as low as possible" to have great adjustment possibilities, one can find in the situation of Figures 20 and 21 all the vertices Sl of a series of tongues (which coincide by nature with the funds of the opposite series of tabs) are at the top of a groove while all the S2 peaks of the opposite series of tabs (which coincide by nature

  with the backgrounds of the previous tab series) is

  wind at the bottom f of a groove, which means that the z axis of the segment 66 is at the right of the midpoint R of the

flute (Figure 21).

  These arrangements are bad because the edges facing each other of the tongues of the two series are of small extent and the three sheets 80, 81 and 82 are presented separately on each side. However, they individually have no resistance, no rigidity, which causes the

  situation of figures 22 and 23: under an effort due to the

  packaged object A, flaps 14 and 15 tend to

  slide with respect to each other and the tabs

  penetrated which are intended to prevent this slipping do not in fact resist it, the leaves 80 and 82 of the two categories pass under each other and the sheet 81 is virtually "flying" is of no help. It then occurs between the shutters 14 and 15 the

  slip as shown in Figure 23.

  It is, on the contrary, necessary for the edges facing each other of the tongues of the two series to be quite extensive and, naturally, the larger the extent, the larger the tongues are, and the less the possibilities of adjustment.

  Therefore, if one wishes to have

  Although there are many discontinuous adjustments, the depth P1 of the tongues must be at least one and a half times the pitch P2 of the flutes of the sheet 81. The pitch P2 is measured indifferently between two consecutive vertices, between two funds. f consecutive or between two

median points p consecutive.

  Thus, whatever the position of the segment 66 with respect to the flutes of the sheet 81, it is ensured that the edges facing each other of the tongues of the two series will have at least one vertex s or a bottom

  f, as shown in Figures 24 and 25.

  This situation is the most favorable for two reasons: longitudinally with respect to the direction of the sliding force, there are at least two lines of force which are the vertices s and / or the funds f fixed to the

  outer sheets 80 and 82 by glue strips; transverse

  salty, the tongues of the two series are presented to each other at least a double thickness (to the right of the vertices and funds f), as seen in Figures 24 and 25, which is likely to avoid the disadvantages

Figures 22 and 23.

Claims (12)

R E V E N D I C A T IO N S   1-Container intended to wrap at least one object (A) by folding panels and flaps forming part of the same strip of cardboard (1), or similar material, band of the type comprising an area (21) on which are located two flaps (14 and 15) fixed to it by lateral margins (18 and 19), these flaps (14 and 15) and their margins (18 and 19) together constituting a single panel (6) outside the strip (1) itself, folded over said strip (1) and fixed thereto by the margins (18 and 19) of the flaps (14 and 15), characterized in thatthe single outer panel (6) is integral with the strip (1) according to a fraction of one (2) of its longitudinal edges (2 and 3) and must be folded down on the inner face of the strip (1) along said fraction of longitudinal edge in question (2).   2- container according to claim 1, characterized in _ce a transverse edge (8) of the outer single panel (6) is aligned with one (5) of the two ends   transverse (4 and 5) of the band (1).   3- container according to claim 1, characterized in that _the transverse edges (7 and 8) of the outer single panel (6) are distant from both ends   transverse (4 and 5) of the band (1).   4- Container according to claim 1, characterized in that _gue the two flaps (14 and 15) are determined by cutting lines of the outer single panel (6) which have on the one hand segments (50 and 51, 67, 68 and 69) substantially transverse to the flaps (14 and 15), and therefore substantially longitudinal to the strip (1), and secondly at least one segment (52, 53-54-55, 56, 62, 66, 71 ) of the preceding, (50 and 51, 67, 68 and 69) determining edges which respectively belong to each of the two flaps (14 and 15) and which are oriented so that by mutual contact they are geometrically incompatible with the relative distance of the two flaps (14 and 15), at least over part of their length. Container according to claim 4, characterized in that it comprises a single link segment (52) which is rectilinear and oblique.   6- container according to claim 4, characterized in that it comprises at least one connecting segment (56, 62,   66, 70-71) which has sinuosities.   7- Container according to claim 6, characterized in that the connecting segment (56, 62) has a course in Sawtooth.   8- Container according to claim 6, characterized in that the connecting segment (66, 70-71) determines   tongues that have a rounded top and bottom.   9- Container according to claim 6, characterized in that the strip (1) being corrugated cardboard whose   grooves are transverse to the band (1), and therefore long   tudinal flaps (14 and 15), the sinuosities have a depth (Pl) at least equal to one and a half times the pitch (P2) grooves.   Container according to claim 6, characterized   ris in that it comprises two segments (70 and 71) determining a tab (72) integral with one (14) of the two flaps (14 and 15) and a complementary housing (73) in the other component (15).   11- Container according to claim 10, characterized in that _gue the tab (72) has a free end which has a notch (74).   12- Container according to claim 4, characterized in that _gu'il comprises two connecting segments,   themselves composed of three fractions (53-54-55, 53'-54'-   ') angularly offset, this set forming two 36 opposite hooks (57 and 58).   13- Method of manufacturing a container   according to claims 1 to 12 above, characterized in   it_ consists in determining by cutting and marking in the same plate at least two blanks (100 and 200) intended to constitute two identical containers placed head to tail and. each comprising a rectangular strip (101-201) and a single lateral panel (106-206), to fold the blanks (100 and   ) against each other so that the side panel (106-   206) of each is applied to the band (101-201) of   the other, to fix said panel (106-206) to said strip (101-   201) by margins (118-119, 218-219) and separating the two containers to make them independent of each other, each of said containers having a strip (101-201) and a panel (106-206). ) fixed on it and having two lateral margins (118-119, 218-219) and two flaps (114-115, 214-215). 4-