FR2722176A1 - PRESENTATION BOX OF PRODUCTS, ESPECIALLY FOOD, SUCH AS PASTRY - Google Patents

Abstract

a) Display box for products, in particular food products, such as pastries. b) Box characterized in that the stiffening strip (200H) - extends over at least part of the length of the base (200A), - protrudes from the base on the tab (200B), - after folding over the base (200A) and on the tab (200B), its end is fixed to the tab (200B), - and when the tab (200B) is raised by With respect to the plane of the base (200A), the dihedron, formed by the base and the stiffening band, opens.

Description

"Product presentation box, especially food

  The present invention relates to a presentation box for products, in particular food products, such as pastries, a box formed from a blank made of cardboard or a similar material, cut and cut.

  born, comprising a bottom bordered by flaps hinged on the bottom to stand up e: wrap the product placed in the box, each flap being formed of a base and10 of a tab, each base being bordered on at least part of its length and on at least one of its co-

  ted by a reinforcement strip connected to the base by a fold line. We already know such a box according to the do-

  cument FR-88 13 968. This box is intended in particular to receive fragile food products,

  prepared foods, such as pastries or certain delicatessen products. This box, like boxes of this type, unfolds flat to present in this state20 the product it contains or allow it to be easily extracted from the box thus opened flat.

  It is also known to produce a box that unfolds flat according to document DE-A-2 253 123, which nevertheless has the drawback of having bellows projecting very much into the volume of the box and which, due to its fold line, cannot

not get away.

  The difficulty of the boxes formed from

  a cut blank, presented flat and which also opens

  The only way to get flat is that they have to-

  meet a number of contradictory imperatives

  roofs. On the one hand, the box material must be of excellent presentation; this is synonymous in

  general of relatively fragile or thin material-

  se. However, although the product placed in this box does not

  is not very heavy, the box must not deform

  does not or does not gradually collapse under the weight of the product. It is therefore necessary to stiffen

the box.

  There are different more or less complicated solutions. Document FR-88 13 968 contemplates

one of these solutions.

  In general, in known solutions, attempts have been made to cut the blank of the box in a single operation without having to glue parts of the box;

  the cut blank is also scored at the edges

hinge or folding genes.

  Although such solutions are a priori

  attractive in terms of manufacturing, they pre-

  sometimes feel difficulty forming the box because the parts making up the sides and the top of the box do not always bend as it would

desirable.

  In addition, the reinforcing parts do not always follow the movement and risk of harm.

  to place themselves or not to fulfill their function of

  necessarily. The object of the present invention is to create a box corresponding to the type defined above, which is of simple manufacture, of shaping of

  particularly easy box from a blank

  cut, which can be packaged flat and which closes from a flat position, after setting

place the product on the blank.

  To this end, the invention relates to a box characterized in that the stiffening strip - extends over at least part of the length of the base, - projects from the base onto the tab,

  - after folding on the base and on the leg, its ex-

  end is fixed to the leg, - and when the leg is raised relative to the plane of the base, the dihedral, formed by the base and the band

stiffening, opens.

  This realization of the box is particularly

  smoothly simple; it is enough, after cutting and creasing the box, to provide the appropriate ends

  bands of glue dots and fold down these ban-

  on the shutters remained flat. We thus obtain a

  custard, prepared, flat, which can be stored and packaged

  priced as is to be sold to users.

  These will only have to take the blanks, to place there

  products and raise the flaps so that automatically

  only the dihedrons, formed by the flaps and the ban-

  rigidification or reinforcement, open and play their role of stiffening element and the case

  centering of the product in the middle of the box.

  This realization does not offer any particular difficulty in opening, to restore the shutters to

dish and give access to the product.

  According to another characteristic of the

  vention, the part of the end of the band fixed to the tab is separated from the remaining part of the band

by a fold line.

  This groove separating the glued part of

  the strip in relation to the unglued part made up

  killing the dihedral, promotes regularity and precision

  bonding as well as the opening movement

  dihedral gulier. This prevents a fragile area of the material in which the blank has been made cannot, by a bad deformation, hinder the opening of the dihedral. According to another characteristic, the origin of the fold line separating the two parts of a strip begins at the junction of the base and the leg

to deviate from it.

  The origin of the planned folding line

  above is preferably on the dividing line

  ration between the base and the shutter. This line of folds

  age of the strip goes up towards the shutter from this

  origin to move away from separation.

  Although in general the base and the flap are separated by a fold line, this fold line is not always provided, especially if the flap and the base must meet in a fold zone (as opposed to a line folding). In this

  Also, the stiffening strip according to the invention

  vention will be fixed to the shutter beyond this folding zone so that the tilting movement of the shutter

  relative to the base allows to open the dihedral for-

led by the band and the base.

  In general, the invention makes it possible to force the opening of the dihedral of the strip and the base to prevent the strip from remaining applied against the

  based and does not fully assume its role of stiffening

  cation and holding of the flaps of the base when the box is formed. By its tilting movement, the tab creates a leverage forcing the dihedral to open. The dihedral will open all the more that the lever arm will be large, that is to say that the point of attachment of the strip on the flap will be distant from the separation (constituting the articulation) between the

leg and base.

  The boxes according to the invention can be produced in the most diverse materials having

  themselves not suffamr.ent of resistance and necessi-

  both rigidification bands, such as cardboard or more or less rigid plastics. The present invention will be described below in more detail with the aid of the accompanying drawings in which:

  - Figures 1 and 2 show two boxes

  your according to the invention, the external appearance of which is

  analogous to that of bou: es known.

  - Figure 3 is a plan view of a blank used to make a box of hexagonal section

  like those shown in Figures 1 and 2.

  - Figure 4 is a schematic view through-

  part of a blank used to make a dry box

square tion.

  - Figures SA, 5B, 5C show respective

  half a flap taken lengthwise,

  in the various stages of manufacture and use

  sation, Figure 5A showing in detail the

  blank cutting with the rigidification strip

  daire of the shutter but not yet folded.

  - Figure 5B shows the stiffening strip

  cation placed on the shutter still flat.

  - Figure 5C shows, in plan view, the shape of the stiffening strip after lifting

  of the leg relative to the drawing plane.

  - Figure 6 is a perspective view corresponding to the position shown in Figure

5C.

  - Figures 7A-7C are three geo- figures

  metrics showing the different stages of deployment

  ment of the triangle taken in the dihedral of the band and

  the base, showing the forced opening of the dihedral.

  According to FIG. 1, a box of the type of the invention, for example a section box

  hexagonal, is produced by cutting a blank of cardboard

  tone or a plastic having some ri-

  gidity and allowing the realization of articulations between the different cut Darties. This blank is

  folded over to give the box shown in Figure 1.

  This box, tall, consists of a hexagonal bottom 10 bordered by flaps comprising a base 100A and a tab 100B with possibly an extension

  forming handle 100C. The legs 100B, 100B 'are light

  slightly different in that the 100B legs are ter-

  undermine by lOOC handles while the legs 1003 'are provided with a slot allowing passage

  extensions forming handles 0lC.

  Figure 2 shows another embodiment.

  tion of a box also of hexagonal section but

lower height.

  Figure 3 shows the shape of the flat blank, giving the boxes of Figures 1 and 2. This example corresponds to a box of hexagonal section but

  boxes of triangular, square or rectangular section

  re, or more generally polygonal, are envisaged

  bles, knowing that in general, each side of the polygon is associated with a flap formed by a base and a tab with if necessary its extension. The paw and the

  base are separated in the figures by fold lines

  ge; these lines can also be replaced by folding zones if the transition between the base and

the tab must be rounded.

  The flaps of Figure 3 also show the 100H stiffening strips that line the two

  sides of each flap. The folding lines, material-

  read by grooves, bear the reference 100I.

  The invention will be described in more detail.

  cut using Figure 4 and especially the figures and following. Figure 4 schematically shows a blank according to the invention giving a square section box

  with four parts of which only two have been represented

  your. These flaps, each formed from a base 200A and a tab 200B, are connected to the bottom 200. The legs are trapezoidal, although other shapes, in particular a rounded shape, sketched for one of the

legs, are possible.

  Each flap is fitted with two bands of ri-

  200H gidification shown in the blank cutting position, that is to say flat, not yet folded. The

  stiffening strips in the folded position are re-

  presented by broken lines. The folding

  is done along the corresponding edge of the base 200A.

  This figure clearly shows the independence of the ban-

  200H neighbors from two neighboring shutters. The description

  tion of the flaps in more detail will be made by way of example, in the case of a flap represented by a longitudinal half, using FIGS. 5A, 5B, 5C,

  6 and geometric figures 7A-7C.

  To facilitate the presentation, FIGS. 5A-5C, 6, use references that are different from the preceding figures.

  According to FIG. 5A, the cut blank comprises

  te, at the edge of the flap formed by the base 2 and the tab 3, a strip 4 which occupies practically the entire length of the edge 22 of the base 2; this strip extends beyond the separation 21 between the base 2 and the

leg 3.

  As the strip 4 must be folded over the flap around the hinge axis XX separating the flap and the strip 4, the shape of the edge 45 of the strip 4 is symmetrical with that of the edge 32 of the tab 3 relative to the axis XX constituting the axis of symmetry. The

  shape of the edge 46 of the strip is arbitrary; any-

  times, to simplify the manufacturing, it is desired-

  ble that this edge 46 is generally parallel to the axis xX. The third edge 44 of strip 4, on the side

  from the bottom 1, arrives at most on the bisector of the year-

  gle forms between two neighboring shutters; as this edge 44 is cut in the plate giving the blank, it is preferable, for reasons of symmetry, than the edge

  44 does not exceed the bisector mentioned above.

  In no way the edge 44 remains united

  of the counterpart edge of the fly: neighbor (the latter is re-

shown in broken lines).

  The strip 4 also includes a straight line

  born 43 facilitating folding as will be seen later

laughingly.

  Alternatively, there is a second li-

  grooved 47 in strip 4 to facilitate or accentuate

  kill the band 4 deployment movement, like

  this will be explained later.

  The strip 4 thus produced (FIG. 5A) is folded over the flap 2, 3 (FIG. 5B) and the end of this strip, on the side of the tab 3, is fixed for example by gluing to the tab 3 at a point or an area, beyond the junction between leg 3 and the

base 2.

  Band 4 can be divided into two parts

  41, 42 separated schematically by a line of par-

  floor 43 or in three parts if there is also the line

grooved 47.

  After the strip 4 has been folded over the flap (2, 3), the part 42 is glued to the tab 3 without this glued part reaching the junction 21,

between base 2 and leg 3.

  it should also be noted that the strip 4 does not necessarily extend over the entire length of the

  side of base 2 although this solution is better

  lures since the band 4 has a reinforcing role or

stiffening.

  FIG. 5B shows the strip 4 thus folded

  kills and stuck on the flap The gluing area (par-

  tie 42) has been hatched, this gluing area is

  limited by the grooved line 43 facilitating a certain

  folding the strip 4. However, fixing the former

  end of the strip could in theory be limited to a point not located on the separation 21. Besides

  this separation 21, represented by an inter-

  broken, is not necessarily materialized by a real fold line or grooved line if the flap (base and tab) of the box must form a curve

without edge.

  According to FIG. 5B, line 43 (as also line 47) has its origin on line 21 which is not essential as shown in a variant

  (line 43 ') whose origin is offset from line 21.

  Then line 43 (or 43 ') deviates more and more from

line 21.

  When the flap (2, 3) is flat (in the plane of FIG. 5B3), the angle of the dihedral formed by the strip 4 and the base 2 is zero; in top view, the width of the strip 4 corresponds to its actual width L

  (see Figure 5A). To facilitate the description of the

  relative edge of strip 4, we call A, B, E, F, G, H, the vertices of the polygon formed by strip 4; line 43 then corresponds to segment (BC). The angle

  between the segments (BC) and (BA) is the angle a.

  If starting from the flat position (figures A, SB), onr. raises the tab 3 outside the plane of Figures A-SB, leaving the base 2 (and the bottom 1) in this plane, for example we arrive at the position shown in planar projection in Figure 5C and in perspective at

Figure 6.

  This raising of the tab 3 results in a shortening measured in space (and not in projection in the plane) of the distance between the

  points A and C (in Figure 5B the distance AC corresponds to

  lays on the length of the diagonal of the quadrilateral ABCG and a decrease in the angle a ', projection of the angle a. As the strip 4 is made of a flexible material

  but not elastic, the length AC measured on the ban-

  of 4 cannot be shortened during the raising of the leg 3. As in space the distance between the point A and the point C (now called C1 in its new position of figure 5C) is shortened, the

  diagonal AC of band 4 must deform.

  This deformation is not free because the strip 4 is also connected to the base 2 along the fold line and the excess length of the diagonal AC means that the zone Z of the strip 4, in the vicinity of the line 43 or the glued part 42, takes a

cone segment shape.

  In the case of the grooved line 47, there is also deformation but following a polygonal line

and not curved.

  The same remark applies to the description

  FIGS. 7A-7C in which the expression "curvilinear deformation of the AC side" must then be replaced by "polygonal deformation" Another way of examining the movement of deformation which occurs and causes the opening of the l!

  dihedral between band 4 and base 2 consists in examining

  ner the deformation of the triangle ACK defined as follows in Figure 5B:

  Points A and C are the points of the fi-

  gure 5B. Point K e: the intersection of the diagonal AC and line 21 passing through B (point K is

in the plan of the figure).

  In the position of FIG. 5B, the trian-

  gle ACK is a flat triangle (this triangle is represented

  shown schematically in Figure 7A).

  As the triangle ACK has two fixed vertices A

  and K and that the vertex C is mobile in space above

  above the plane of FIG. 5B, when the leg 3 is raised (see also Figure 7B), the length of the strip 4, between A e: C, being invariable, this side AC must be deformed in a curvilinear manner, more and more, depending on the bearing on the side KC (arrows in FIGS. 7B and 7C indicate the rotational movement of the point C around the center of rotation K and

  the curvilinear deformation on the AC side.

  In other words, and schematically-

  that the tab 3 plays the role of a lever for "lifting" the strip 4 or opening the dihedral formed by this strip 4 with the base 2; the dihedral is a means

  stiffening and strengthening the base 2.

  If, as is preferable, for reasons

  sounds of symmetry and regularity, each component

  wears two bands, this solution is not essential

  sand and we can consider a shutter with a single strip.

  Likewise, the above description has been made

  te in the simplified case of a tab 3 separated from the base 2 by a separation line 21 or fold line; this line is by no means essential and the invention makes it possible to obtain equivalent results if the base 2 and the leg 3 are separated by a zone

  of curvature 21, the strip 4 being fixed by its end

  mite 42 on leg 3, in a place more or less distant from the zone of curvature 21.

  Finally, it should be noted that the des-

  above was made on the assumption of a

  base 2 remaining in the plane of FIGS. 5A-5C. In pra-

  tick, only counts the relative tilting of the tab 3 relative to the base 2 which shortens the spacing

  points A and C (C) and obliges the line AC, material-

  edged by strip 4, to deform in a curvi-

  line so that its ends pass through points A

and C (or CJ).

R E V E ND I C A T IONS

  1!) Box for products such as pasta

  weaving, box formed from a cardboard blank

  or a similar material, cut and grooved, including

  nant a bottom bordered by flaps articulated on the bottom to be raised and wrap the products placed in the box, each flap being formed of a base and a tab, each base being bordered on at least one

  part of its length and on at least one of its c-

  tees by a reinforcement strip connected to the base by a fold line,

  box characterized in that the stiffening strip

  tion (200H), - extends over at least part of the length of the base (200A), - extends beyond the base onto the tab (200B), - after folding back onto the base (200A) and onto the tab ( 200B), its end is fixed to the tab (200B), - and when the tab (200B) is raised relative to the plane of the base (200A), the dihedral, formed by the

  base and stiffening strip, opens.

  ) Box according to claim 1, character-

  laughed at in that the part of the end of the strip

  (200H) attached to the bracket (200B) is separated from the

  remaining tie of the strip by a fold line (43, 43 ').

  3) Box according to claim 2, character-

  in that the origin of the fold line (43) separating the two parts of a strip begins at the junction of the base (200A) and the tab (200B) to

deviate from it.

  4) Box according to claim 1, character-

* laughing in that the partle of the end of the band

  (200H), attached to the lug (2003) is separated from the

  remaining tie of the strip by two fold lines

(43, 47).