FR2841216A1 - Packaging case obtained from pre-cut blank comprises tubular envelope open at ends and having end closing panels and fold down hinged flaps, one flap comprising damping structure - Google Patents

Abstract

The packaging case obtained from a pre-cut blank comprises a tubular envelope (E) with hinged panels (2,3,4,5) open at its ends. At each end of the envelope is a closing panel (13,14). At the envelope ends are fold down hinged flaps (21,22,23,24). One flap (21) comprises a damping structure (35) comprising a hinged band folded back against the flap interior face. An independent claim is included for a pre-cut blank.

Description

and separating the wings (83).

  The present invention relates to the technical field of packaging and it relates, more particularly, to packaging cases which are intended to pack, preferably but not exclusively, products with unitary characteristics,

  either by themselves, or by a pre-conditioning imposed on them.

  The invention relates, more specifically, to packaging cases which are produced from a blank of precut raw material and then mounted by

  folding to form the proper package.

  By way of preferred application, the invention relates to packaging cases produced from a cardboard blank, preferably compact, without this precision excluding corrugated cardboard or similar products, such as

  plastic sheets laminated or not.

  In the above technical field, it is widely known to produce packaging for packaging unit products from a blank of suitable material, cut flat, then mounted to form a case in which a unit 1S product must be packaged. . As a rule, these are compact cardboard blanks which are produced to define, after assembly, a peripheral envelope constituting a case body and having bottom closing systems and top closing systems. The design of these blanks can be ensured so that the case body or the perimeter envelope presents a most generally parallelepiped shape, without it being a question of excluding the bodies of cases of different shapes, such as straight section pentagonal or hexagonal, even octagonal or,

again, triangular.

  Such cases are used to ensure the packaging of different types of products, such as, for example but not exclusively, flasks or bottles which exhibit a certain degree of fragility, in particular when they are vials of

  perfume which should be effectively protected.

  Thus, when the product to be packaged can be considered relatively heavy or fragile, it is known, during the implementation of the case, to have, at the bottom of the latter, before placing the product to be packaged, a small plate or coffee made in a material with micro-grooves which provide a shock absorption function

  the case and its contents, thus helping to improve its protection.

  The covering of such wedges with micro-grooves gives complete satisfaction with regard to the protection of the product packaged in the case but presents, however, the inconvenience of constituting an added piece which must be put in place after shaping the case. but before the introduction of the product conditioned inside the latter. However, the establishment of micro-grooved coffee requires an additional operation during the final packaging and also requires management of a stock of shims independently of the stock of cases on the packaging line. The implementation of a micro-grooved coffee therefore increases the

  cost and implementation cost of the packaging case.

  Thus, there appears to be the need to be able to have a new type of case whose structure enables staff to be free from the implementation of micro-groove wedges, while offering a quality of packaging and protection of the contents of ltui, at least equivalent to that of the packaging carried out by means of a case

  completed by a micro-grooved coffee.

  In order to achieve this objective, the invention relates to a packaging case for a packaged unit product, of the type obtained from a precut blank and mounted by folding to include: A tubular envelope with articulated panels open at its two exkemites, At at each end of the envelope, a closure panel, At and at at least one of the ends of the envelope, at least one flight

hinged hinge.

  According to the invention, this packaging case is characterized in that the folding flap comprises a damping structure comprising at least one strip

  hinged and folded towards the interior face of the flights.

  The articulated and folded band thus doubles the thickness of the voles to form a volume of shock absorption or movements of the unitary product

  packaged in the case according to the invention.

  In accordance with the invention, the articulated band can be either simply folded back towards the interior face of the flights, or counter-fixed on this behind, so as not to rise under the effect of the elasticity of the material constituting the blank and of

the packaging case.

  According to a preferred but not exclusive characteristic of the invention, the damping structure comprises at least two articulated bands which are folded over one another and towards the interior face of the flights and one of which at the

  less is fixed against this inner face.

  This advantageous arrangement of the invention thus makes it possible to define a damping structure formed by trots of thicknesses of materials constituting the precut blank, namely the thickness of the folding flaps and that of the two articulated bands. Of course, within the meaning of the invention, the damping structure could have more than two articulated bands, namely trots, four or more. The folding of the articulated bands, constituting the damping structure, can

  then be done in different ways.

  According to a first embodiment, the articulated bands of damping wind folded in the same direction and the second articulated band, from the voles

  foldable, is then fixed against the inner face of the foldable flaps.

  According to an alternative embodiment, the articulated bands of the damping structure are, moreover, counter-fixed to each other, so as to be in contact. According to another alternative embodiment, only the second articulated band is counter-fixed to the folding flap and the faces, opposite two consecutive articulated bands of the damping structure, wind located at a distance from each other, at least in the region located near the fold line separating the two consecutive articulated bands. This advantageous characteristic of the invention makes it possible to obtain an elastically deformable damping structure, which

  is able to absorb significant shocks when settling.

  According to another embodiment of the packaging case according to the invention, the articulated bands of the damping structure are not folded in the same mat direction, on the contrary, alternately folded and counter-folded in accordion, the first strip from the flaps being counter-fixed on the flaps and the

  following bands being counter-fixed to each other.

  According to an alternative embodiment of the invention, the strips and the wind flaps laminated to each other over their entire surface, so as to define a

  stack of joined thicknesses of materials.

  According to another alternative embodiment, each articulated band is. on the contrary, fixed on the flanges or the preceding strip by a line of glue situated opposite the fold line separating said articulated strip from the flaps or from the preceding articulated strip. This advantageous characteristic of the invention makes it possible to take advantage of the elasticity of the material constituting the blank and of the packaging case in order to define an elastically deformable damping structure, insofar as the faces are opposite two consecutive articulated bands. of the damping structure, wind located at a distance from each other, at least in the region located near the fold line separating the two articulated bands

consecutive.

  According to the invention, the packaging case comprises at least one folding flap and, preferably, two folding flaps at each end of the envelope. All or some of the folding shutters can

  then include a damping structure according to the invention.

  Preferably but not exclusively, the two foldable flaps, located at the lower end of the envelope, each have a damping structure. According to another characteristic of the invention, the packaging case also comprises an internal structure defining at least one wedging cell intended to receive a conditioned unitary product, this wedging cell then being open facing the damping structure, so that the unit product

  condition can come to rest on this behind.

  The invention also relates to a precut blank for making a packaging case, as described above. The pre-cut blank for the realization of a packaging case according to the invention then comprises at least: A series of articulated panels arranged one after the other, being separated by parallel fold lines, and intended to form The tubular envelope, With two closing panels each extending in the extension of an articulated panel, of which they are each separated by a fold line, and being located on either side of the alignment of the articulated panels, At and at minus a folding flap extending in the extension of an articulated panel from which it is separated by a fold line parallel to and substantially aligned with the fold line of the closure panel located on the same side of

  the alignment of the articulated panels as the folding flaps.

  According to the invention, this precut blank is characterized in that the folding flaps comprise a damping extension comprising at least one articulated band separated from the folding flaps by a fold line. Preferably but not strictly necessary, the cushioning extension comprises a series of articulated bands separated by lines of

  folding which are preferably but not necessarily parallel to each other.

  According to a characteristic of the invention, the extension of damping extends 10 in the extension of the folding flaps, opposite the articulated panel carry the

folding flaps.

  Various other characteristics of the invention will emerge from the description below.

  below made with reference to the accompanying drawings which illustrate different embodiments of a packaging case according to the invention and precut blanks

  lS allowing to realize such a case.

  The ffg. l is a perspective, partially broken away, of a case of

  packaging according to the invention, mounted in the open position of its ends.

  Fig. 2 is a flat view of a precut blank for making the case such

as illustrated in fig. 1.

  Fig. 3 is a section along the plane III-III of FIG. 1.

  Fig. 4 is a section along line IV-IV of the ffg. 3 of the case as illustrated in FIG. l in the closed position of its basset end Figs. 5 and 6 are sections, similar to FIG. 3, illustrating different variants of folding and mounting of the characteristic damping structure

  a packaging case according to the invention.

  Fig. 7 is a plan view of another embodiment of a blank

  precut for forming a packaging case according to the invention.

  Fig. 8 is a perspective view, partially broken away, substantially similar to FIG. l, showing a packaging case according to the invention which comprises an internal wedging structure defining a cell for receiving a product to be packaged.

  Fig. 9 is a section along the plane IX-IX of FIG. 8.

  Fig. lO is a section along line X-X in fig. 9.

  Fig. 11 is a flat view of a predecope blank for making the case,

as shown in fig. 8.

  A packaging case according to the invention, as illustrated in a semi state constituted by FIG. 1, is obtained from a flat precut blank, as illustrated in FIG. 2. Such a blank, designated as a whole by the reference 1, can be produced from compact cardboard, corrugated cardboard or, again, from sheets of suitable plastic materials, the nature of the material constituting the blank being not

characteristic of the invention.

  The blank 1 comprises four articulated panels, 2, 3, 4 and 5 which are intended to define a tubular envelope E, of generally parallelepiped shape and open to

  its two ends, as shown in fig. 1.

  The purpose of this tubular envelope E is to constitute a case body, that is to say, within the meaning of the concept of packaging, a container. The invention could find an identical application with a tubular envelope E having a different shape and, for example, having a pentagonal, hexagonal, even octagonal or, again, triangular section. In such a case, the number of articulated panels is chosen in correspondence with the number of dimensions of the section of the tubular casing. Fig. 2 shows that the panels 2, 3, 4, 5 extend one after the other being delimited each with respect to the following by means of fold lines, respectively 6, 7 and 8, which wind parallel between them and perpendicular to the alignment of the articulated panels 2, 3, 4, 5. It should be noted that the fold lines appear in fig. 2 in dots, while the solid lines represent

cutting lines.

  The hinged panel 5 also has, opposite the hinged panel 4, a connecting strip 9 separated from the panel 5 by a fold line 10 parallel to the lines 6 to 8. The connecting strip 9 is intended to be laminated on the inside of the hinged panel 2 during the shaping of the case, like this

will appear later.

  Conventionally, the panel 4 is bordered, beyond fold lines 11 and 12, parallel to each other and perpendicular to lines 7 and 8, by two closure panels, respectively top 13 and teas 14. These closure panels 13 and 14 have in plan a shape corresponding to the section of the tubular casing E, in this case rectangular and wind each provided, beyond

  a fold line 15 or 16, a flap 17 or 18.

  Furthermore, the articulated panels 3 and 5, arranged on either side of the panel 4, are each provided, beyond a fold line 19 or 20, with a foldable teas 21 or 22 extending in the same direction as the teas closure panel 14. It should be noted that the fold lines 19 and 20 are perpendicular, respectively, to the lines of 6 and 7 and 8 and 10. Similarly, the articulated panels 3 and 5 have , opposite the high folding flaps 21 and 22, folding flaps 23 and 24 respectively extending beyond fold lines

  25 and 26 in the same direction as the top closure panel 13.

  In accordance with an essential characteristic of the invention, at least one of the foldable flaps 22 to 24 and, according to the example illustrated, each of the two foldable flaps teas 21, 22, has an extension 30, quotation of damping, for reasons which will appear later. Each damping extension 30 extends in the extension of the folding flaps 22 or 21 which carries it opposite the hinged panel 3 or 5 to which the flaps 21 or 22 is connected. According to the example illustrated, each damping extension 30 is separated from the folding flaps which carry it, by a fold line 31 parallel to the fold lines 19 or 20 and comprises at least one and, according to the example illustrated, two bands articulated 32 and 33 separated by a

  fold line 34 parallel to fold line 31.

  The shaping and mounting of the blank 1, in order to constitute the case, such

  as illustrated in fig. 1, is done in the following way.

  First of all, the extensions 30 are folded so as to each form a damping structure 35. Thus, the second articulated strip 33 is folded and laminated on the internal face of the first strip 32, then ['the assembly constitutes articulated bands 32 and 33 is folded along the fold line 31 on the inside face of the folding flaps 21 or 22. The second articulated strip 33 is then laminated over its entire surface on the inside face of the folding flights

  correspond 21, as shown in figs. 3 and 4.

  The mounting of the case from the blank 1 is done by forming the fold lines 6 to 8 and 10 and by coming to fix the connecting strip 9 on the internal face of the first articulated panel 2. The case packaging according to the invention

  then found in the configuration as more particularly illustrated in FIG. 1.

  The shaping is done by raising the folding flaps teas 21 and 22 and closing the closing panel teas 14, so that the lower part of the case

  found in a configuration as more particularly illustrated in figs. 3 and 4.

  In this state, the damping structures 35 form, at the bottom of the case, a stack of cardboard thicknesses which provide support for a product P. as illustrated in phantom in FIG. 4, placed in the packaging case. The double thickness of cardboard, formed by each structure 35, supplemented by the thickness of the folding flaps carry structure 35, forms a complex which absorbs

  the energy of the movements of the product P and therefore absorbs the shocks suffered by the latter.

  Thus, the amortization structures 35 make it possible to save a coffee

  micro-grooved which they advantageously replace.

  According to the example illustrated in FIG. 4, the damping structure 35 is obtained by folding the articulated bands 32 and 33 of the damping extension 30 in the same way. However, according to the invention, such a folding method is not strictly necessary. Thus, the ffg. 5 illustrates an alternative embodiment according to which the

  articulated bands 32 and 33 are alternately folded and counter-folded in accordion.

  The first articulated band 32 is then counter-fixed on the flanges 21 or 22 carry it, while the following band, namely the second band 33, is counter-fixed on the band 32. According to the example illustrated in FIG. 5, the articulated bands against wind fixed by gluing over their entire surface, either on the adjacent folding flap, or on the adjacent articulated band. Thus, each damping structure 35 is constituted by a compact stack of thicknesses of cardboard constituting the blank

precut 1.

  According to the variant illustrated in FIG. 6, the counter-fixing of the articulated bands of the extension 30 is not carried out over the entire surface of the articulated bands, but by means of a line of glue situated opposite the fold line 31 or 34 separating the articulated band of the voles or of the preceding articulated band. Thus, taking into account the elasticity of the cardboard constituting the blank 1, the facing faces of the two consecutive articulated bands 32 and 33 are located at a distance from each other, at least in the region located near the fold line. 34 separating them. Likewise, the facing faces of the first articulated band 32 and of the folding flap 21 or 22 also correspond to the distance between them in the region of the fold line 31. Thus, in the event of impact, the damping structure 35 is liable to deform in the direction of a flattening in order to substantially dampen the energy of the shock and thus protect the product P. According to the examples described above and illustrated in FIGS. 1 to 6, senls the folding flaps teas 21 and 22 comprise an extension 30 or structure 35 of damping. However, according to the invention, the set of folding flaps 21 to 24 could include such a damping extension 30. Thus, the ffg. 7 illustrates an embodiment of a precut blank according to the invention for which the top flaps 23 and 24 also include a damping extension 30 constituted by a single articulated band 32, while the foldable flaps teas 21 and 22 include each a damping extension 30 formed by three articulated bands 32, 33 and 36 separated by fold lines 34 and 37 parallel to the line

folding 31.

  The ffg. 8 to 10 illustrate yet another embodiment of a case according to the invention which differs from that described in relation to FIGS. 1 to 4 in that it further comprises an internal structure 40 defining at least one wedge 41 for wedging for a unit product P having a volume substantially less than that defined by the tubular envelope E. The case, such as illustrated in fig. 8 is obtained from a precut blank 1, more particularly illustrated in FIG. 11 which differs from that shown in FIG. 2 in that it comprises, in the extension of the connecting strip 9 and opposite the hinged panel 5, a wedging extension 42 which is separated from the strip 9 by a fold line 43 parallel to the line of folding 10. The wedging extension 42 can be made in any suitable way and, for example, as described by the

  Patent FR 2,769,893, without such conformation being strictly necessary.

  After the blank 1 has been pre-cut, as shown in fig. 11, to constitute the case as shown in FIG. 8, the alveolus 41 is then open opposite the damping structures 35 carried by the teas flaps 22 and 23, as the monke more particularly FIGS. 9 and 10. Thus, the skuctures 35 wind at the same

  to dampen the movements of the product P has in the alveolus 41.

  It should be noted that, according to this embodiment, the articulated bands 32 and 33, constituting each skucture 35, wind folded over on themselves in the same line. However, as is more particularly apparent from FIG. 10, only the second strip 33 is conke-fixed to the corresponding voles 21 or 22, the facing faces of the strips 32 and 33 then being, due to the elasticity of the material constituting the plane 1, located at a distance from one of the 'other. Thus, the damping structures 35 have an elastic deformation capacity ensuring perfect damping of the movements or shocks undergone by the product P. S Of course, various other modifications can be made to

  the invention without departing from its scope.

Claims (15)

  1 - Packaging case for a packaged unit product (P), of the type obtained from a blank (1) precut and mounted by folding to include: A tubular envelope (E) with articulated panels (2, 3, 4 , 5) open at its two ends, At at each end of the envelope, a closing panel (13, 14), At and at at least one of the ends of the envelope at least one hinged flaps (21, 22, 23, 24), characterized in that the folding flaps (21) comprises a damping structure (35) comprising at least one articulated band (32) and folded towards the inner face of the flaps (21).   2-packaging case according to claim 1, characterized in that the   strip (32) is fixed against the inner face of the flaps (21).   3 - packaging case according to claim 1, characterized in that the damping structure (35) comprises at least two articulated bands (32, 33) which wind folded over each other and towards the inner face of the flights and of which Moon   at least is fixed against the inside of the flaps.   4 - packaging case according to claim 3, characterized in that the articulated bands (32, 33) of the damping structure (35) wind folded in the same see, the second articulated band (33) from the flights ( 21, 22) being foldable   counter-fixed on the inside of the folding flaps (21, 22).   - C o nditi onment case if it is claimed 4, characterized in that the articulated bands (32, 33) of the wind damping structure are counter-fixed to one to others.   6 - packaging case according to claim 3, characterized in that the articulated bands (32, 33) of the damping structure (35) are alternately folded and counter-folded in accordion, the first band (32) from flights (21) being counter-fixed on the flights (21) and the articulated bands (32, 33) being laminated to each other.   7 - packaging case according to claim 6, characterized in that each articulated band (32, 33) is fixed to the flaps (21) or the previous band (32) by a line of glue located opposite the line folding (31, 34) separating said   articulated band (32, 33) of the flights (21) or of the preceding articulated band (32).   8 - packaging case according to one of claims 3 to 7, characterized in that   that the facing faces of two articulated bands (32, 33) consecutive to the damping structure (35) are located at a distance from each other, at least in the region located near the fold line ( 34) separating the two consecutive articulated bands.   9 - packaging case according to one of claims 1 to 8, characterized in that   that it includes two folding flaps (21, 22, 23, 24) at each end of the envelope.   - Packaging case according to claim 9, characterized in that at least the two foldable flaps (21, 22) located at the lower end of   the envelope (E) each comprise a damping structure (35).   11 - packaging case according to one of claims 1 to 10, characterized in   that it comprises at least one internal structure (40) defining at least one   wedge (41) of wedging open opposite the damping structure (35).   12 - Pre-cut blank for making a packaging case according to one   of claims 1 to 11, of the type comprising at least:   To a series of articulated panels (2, 3, 4, 5) arranged one after the other, being separated by parallel fold lines (6, 7, 8), and intended to form the tubular envelope, With two closing panels (13, 14) each extending in the extension of an articulated panel (4), from which they are each separated by a fold line (11, 12), and being located on either side other of the alignment of the articulated panels (2,3,4,5),   With and at least one folding flap (21) extending in the extension of an articulated panel (3) from which it is separated by a fold line (19) parallel to and substantially aligned with the fold line (12) of the closure panel located on the same side of the alignment of the articulated panels (2, 3, 4, 5) as the folding flap (21), characterized in that the folding flap (21) has a damping extension (30) comprising at least one articulated band (32) separated from the flights   foldable (21) by a fold line (31).   13 - precut blank according to claim 12, characterized in that the damping extension (30) remains in the extension of the folding flaps (21), a   ['opposite of the articulated panel (3) carry the folding flaps (21).   14-precut blank according to claim 12 or 13, characterized in that the damping extension (30) comprises a series of articulated bands (32, 33,   36) separated by fold lines (34, 37).   - Pre-cut blank according to claim 14, characterized in that the articulated bands (32, 33, 36) of the wind damping extension separated by lines of   folding (34, 37) parallel to each other.   1016-Pre-cut blank according to one of claims 12 to 15, characterized in that   that it includes two folding flaps (21, 22, 23, 24) on each side of   the alignment of the articulated panels (2, 3, 4, 5).   17-precut blank according to claim 16 characterized in that at least two foldable flaps (21, 22), located on the same side of the alignment of panels   articulations (21, 22, 23, 24), include a damping extension (30).   18-Pre-cut blank according to one of claims 12 to 17, characterized in that   that it includes a wedging extension (42) which extends in the extension of a