Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/42—Details of containers or of foldable or erectable container blanks
  • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
  • B65D5/50—Internal supporting or protecting elements for contents
  • B65D5/5028—Elements formed separately from the container body
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B2120/00—Construction of rigid or semi-rigid containers
  • B31B2120/40—Construction of rigid or semi-rigid containers lined or internally reinforced
  • B31B2120/402—Construction of rigid or semi-rigid containers lined or internally reinforced by applying a liner to already made boxes, e.g. opening or distending of the liner or the box

Definitions

• the present invention relates to a packaging of the cardboard box type provided with a shrink film which is integral with it, intended for the packaging of articles intended to be delivered in variable number or volume. It also relates to a set of blanks making it possible to obtain such packaging.
• It also relates to a method and a device for forming a packaging package of the cardboard box type provided with a shrink film. It finds a particularly important although not exclusive application in the field of the transport of heavy objects, that is to say of weight greater than one kilogram, for example three kg and of irregular shape.
• Such packaging is also particularly suitable for objects such as boxes, bottles, medicines or various documents, taken in groups or individually in the same packaging, particularly intended for the delivery of a retailer such as a bookseller, pharmacist and more generally the trade. Retail .
• French patent FR-A-86.01435 describes a packaging case consisting of a case, for example of cardboard and of a heat-shrinkable sheet material for packaging and holding a load in place.
• the heat-shrinkable sheet material is bonded by at least one of its edges to the external surface of a wall of the case in the vicinity of the edge of said wall, and is developed outside from said edge towards the edge of said wall then inside the case opposite the internal surface of said wall while moving away from the latter towards the load to be packaged.
• the plastic film is pinched between the outer flaps adjoining two parallel walls of the box and constituting the bottom proper of the package, and the inner flaps, adjoining the other two walls and lining the bottom internally.
• FR 2 659 292 Also known (FR 2 659 292) is a cardboard packaging box for transporting a load, comprising a series of flaps forming the side walls of the box, linked in pairs by first junction lines parallel to each other. others, the series of flaps comprising two series of two main flaps opposite in pairs, and a first set of side flaps arranged on one side and connected to the main flaps by second junction lines, perpendicular to the first junction lines, and comprising at least two first opposite flaps at least partially forming the bottom of the box.
• the box further comprises a film of heat-shrinkable plastic material intended for packaging and holding the load in place, and means for fixing the film to the bottom of the box.
• Document G81 15943.9 describes a packaging case with one or more rigid stepped plates introduced into a tube made of heat-shrinkable plastic material. The plates are difficult to insert into the tube and such a box only authorizes the transport of small articles such as nails or medicines, or even light textile articles such as shirts.
• FR 2 661 392 a box with plastic film and block for holding the film on the bottom of the box, the block comprising lateral wings provided with self-locking means on the side.
• Such a box is difficult to produce due to the friction inherent in its mounting and has a fragile locking which does not exclude lifting during impacts.
• the present invention aims to provide a box, a set of blanks, a method and a device for forming a box which responds better than those previously known to the requirements of practice, in particular in that it allows fixing of the plastic film by compared to a bottom of the body which is itself firmly maintained and sufficiently solid to ensure the transport of a load safely thus overcoming the various drawbacks of the solutions of the prior art.
• the invention proposes in particular a cardboard packaging case for the transport of a load, comprising a bottom, at least four side walls, namely two opposite first walls and two opposite second walls, a film of plastic material.
• heat-shrinkable intended for the packaging and the holding in place of the load and of the means for fixing said film on the bottom of the box comprising a horizontal attached plate, for pressing and keeping flat the heat-shrinkable film on the internal face of the bottom of the body, characterized in that the plate comprises a median or substantially median line of provisional longitudinal folding of the plate in Chinese hat, with a crest directed towards the top of the body, said median line being parallel to the two second walls.
• median or substantially median fold line is meant a line parallel to the two second opposite walls of the body, which is centered relative to the plate of which it constitutes for example an axis of symmetry or else located on either side of this axis of symmetry at a distance less than or equal to a quarter of the transverse dimension of the plate, for example between the eighth and the tenth.
• the plate according to the invention is therefore formed of two portions of plates connected together by a fold line.
• the film is in the form of a rectangular curtain of heat-shrinkable plastic material in one piece, escaping on either side of the two opposite edges facing said plate parallel to the center fold line, and extending from said edges over a length sufficient to overlap one another by enveloping said load and blocking it by thermal shrinkage of the film.
• the plate which will constitute a double bottom for the container is obtained from a blank of corrugated cardboard whose direction of the grooves will be oriented as will be explained below.
• the plate is inserted between the two opposite second main flaps so that the edges of the plate are in contact via the plastic film with at least part of the internal lower edges of the body, at the bottom of said second walls; the plate is inserted by force between said internal lower edges of the body, at the bottom of said second walls; - The plate has on at least one of its two opposite edges located on the side of the second flaps, at least one post, said post collaborating with a corresponding recess made at the lower internal edge of the body at the bottom of said second corresponding flaps, once the plate in place against the bottom of the box; the plate is made of corrugated cardboard, the direction of the grooves is perpendicular to the lines of contact with the second main walls between which said plate is inserted; the underside of the plate is at least partly directly bonded to the upper face of the bottom of the box, through at least one hollowed out part of the film of heat-shrinkable material which is in one piece
• the box comprises a series of flaps forming the side walls of the box, connected two by two by first junction lines parallel to each other, said series of flaps comprising two series of two main flaps opposite two by two, and a first set of side flaps arranged on one side and connected to the main flaps by second junction lines perpendicular to the first junction lines, and comprising at at least two first opposite flaps forming at least partially the bottom of the box, the first two flaps each comprising respectively on their two lateral sides of the reinforcement tabs folded and glued to the external face of the main flaps, called second main flaps, corresponding second walls adjacent to the main flaps corresponding to said first flaps, called first main flaps and corresponding to said first walls; the set of
• first blank comprising a series of flaps suitable for forming the side walls of the box, linked in pairs by first junction lines parallel to each other. others, said series of flaps being terminated by a bonding tab and comprising two series of two main flaps, and a first set of lateral flaps arranged on one side and connected to the main flaps by second junction lines, perpendicular to the first lines junction, namely two first flaps and two second flaps intended to form the bottom of the body, characterized in that the first two flaps each comprise respectively on their two lateral sides reinforcement tabs arranged to be folded down and glued to the face external of the main shutters, called second main shutters, adjacent to the main shutters corresponding to the x said first flaps once the box is formed, in that the second junction lines with the second main flaps each have at least one recess and in that said assembly comprises a second blank in the form of a substantially rectangular plate provided on its longitudinal edges with at least one
• the plate comprises means for tearing said plate by traction.
• the invention also provides a method of forming a cardboard packaging box or the like for transporting a load, as described above.
• the invention also provides a method of forming a corrugated box or the like for the transport of a load, comprising the following steps: the bottom and the vertical walls of a box are formed which are left open on the above, there is a plate of longitudinal dimensions substantially equal to those of the bottom, said plate comprising a median or substantially median fold line parallel to its longitudinal sides which are adapted to cooperate with two opposite vertical walls of the body, called second walls, the plate is folded in the form of a Chinese hat around said fold line, said plate being placed above a sheet of plastic material arranged to let escape on either side of the two opposite edges opposite the plate, curtain portions of free material extending from said edges on a sufficient length to cover each other by completely enveloping the load and blocking said load by thermal shrinkage of the film, the plastic sheet and the Chinese hat plate are introduced into the box until it comes to the blocking position of said sheet between plate and bottom by placing the plate horizontal
• the sheet of plastic material comprising at least one perforated part, the underside of the plate or the internal face of the bottom is previously glued opposite the perforated part, and the plate is glued to the bottom through said perforated part when the plate is brought into horizontal abutment against the bottom.
• the plate comprising two lateral flaps, known as third flaps suitable for being pressed against two opposite walls opposite the box perpendicular to the fold line of the plate, said third flaps are folded against the upper face of the plate before introduction of the plate into the box and the plating faces of said third flaps are glued then, after introduction of the plate into the box, said faces are pressurized for bonding against the walls by automatic straightening of the third flaps when plating the plate on the bottom.
• the bottom and the walls of the box are formed around a mandrel.
• the bottom of the box comprising two first flaps and two second flaps, the second flaps are folded 180 ° around their junction lines with the walls and they are glued to the internal face of the adjacent walls.
• the plastic sheet is introduced into the box in a time-shifted and space-wise manner relative to the plate, that is to say not simultaneously with the plate, before the latter, while being funnel-shaped or recessed relative to the opening of the box, which allows its introduction without injury or risk of annoying friction.
• the invention also provides a device for manufacturing a cardboard packaging box or the like for transporting a load, said box comprising a lateral belt formed by at least four vertical walls and a horizontal bottom secured to said belt via junction lines, and a heat-shrinkable plastic film material intended for packaging and keeping said load in place, characterized in that it comprises means for forming the bottom and vertical walls of the box, presentation means a plastic film above said box, means for presenting a plate previously folded in the shape of a Chinese hat around a longitudinal fold line of said plate above said film and means for introducing the film in the box and introduction of the Chinese hat plate into said box, said means being suitable for pressing said plate by pressing on it, until pressing the heat-shrinkable film on the internal face of the bottom of the box leaving escape on either side of two opposite edges opposite said plate, curtain portions of free material extending from said edges over a length sufficient to r cover each other in a second step by completely enveloping the load.
• the device comprises means for cutting at least one orifice in the film of plastic material and for gluing the bottom of the box opposite said orifice after introduction of the film into the box. Also advantageously the device further comprises means for introducing the load into the box, means for folding down the curtain portions on the load and means for heating the film for thermal shrinkage on the load.
• FIGS. 1 to 8 are perspective views showing the different stages of a box according to a first variant of one invention.
• FIG. 9 is a plan view of the blank for mounting the half-body of Figure 1.
• FIG. 9A is a plan view of the attached plate of the type of that of FIG. 2, with tear strip,
• FIG. 10 is a partial plan view of a blank constituting a half-body according to another embodiment of the invention, with tongue on cut corners.
• - Figure 11 is a box obtained with the blank of Figure 10, closed by a cover.
• - Figure 12 shows another embodiment of the insert plate used 1 according to the invention, with frangible tear cross area.
• FIG. 13 and 14 show another embodiment of a box according to the invention, with four components, with formation around a mandrel.
• FIG. 15 shows an exploded perspective view of the junction between plate and second flap, of an assembly intended to form a half-box according to the embodiment of the invention of FIG. 1.
• FIG. 16 is a sectional view along VIII-VIII of Figure 15.
• FIG. 17 to 22 schematically show a device according to an embodiment of the invention during the different stages of forming a box according to an embodiment of the invention.
• Figures 23 to 28 are perspective views showing the different stages of a box according to another variant of the invention.
• Figure 1 shows a half-case 1 for the packaging of a load, comprising a series of flaps forming the side walls of the box, connected in pairs by first connecting lines 2, parallel to each other.
• the series of shutters comprises two first opposite main shutters 3 and 5, and two second opposite main shutters 4 and 6, the main shutters being separated by intermediate flaps 7, forming cut corners of the body.
• the first flaps 3 and 5 have first flaps 8, connected at the bottom of said first flaps by second junction lines 9 perpendicular to the first junction lines 2.
• the first two flaps each comprise, respectively on their two lateral sides, reinforcement tabs 10 folded down and glued to the external face of the second main flaps 4 and 6.
• the first two flaps are joined at their ends located on the side opposite the fold lines 9 between first flaps and first flaps.
• the tongues 10 are also contiguous at their ends and extend all along the first flap facing the second corresponding flap.
• the second main flaps 3 and 5 for their part, have second flaps 11 connected to said flaps in the lower part by second or second junction lines 9 ′.
• the second flaps are folded 180 ° relative to the junction lines 9 ′ and glued to the internal face of said second flaps 4 and 6.
• FIGS 2 to 8 show in perspective the successive stages of formation of the cardboard packaging case according to the method of embodiment of the invention more particularly described here.
• the sizing 12 facing the perforated part can also and advantageously be done on the underside of the plate.
• the plastic material film 13 is cut to form a substantially rectangular sheet and has dimensions which will be specified below.
• the plate is of the same shape and substantially the same dimensions as the bottom of the half-body 1, and includes right through a longitudinal fold line 16, for example of symmetry of the plate.
• the fold line 16 is arranged to allow the two side panels 17 of the plate to be folded down.
• the plate can also be off-center, its aim being to allow the plate to be folded into a Chinese hat, as shown in FIG. 3, and to allow it to be introduced without friction inside the half-body 1, for example by loading the film of plastic material.
• the plate also comprises third rectangular, opposite, end flaps 18, connected to the plate by third junction lines 19 arranged to coincide with the first junction lines between the first flaps and the first flaps.
• the plate also comprises four tenons 20 located respectively in pairs and symmetrically with respect to the fold line 16 on its opposite longitudinal edges 21, perpendicular to the third junction lines 19.
• the pins 20 are for example of trapezoidal, rectangular or stepped shape and are arranged to cooperate with recesses 22 located on the internal lower edge of the body at the bottom of the second flaps 4, 6, that is to say partially coinciding with the second fold lines 9 'between second flaps and second flaps.
• Each recess is made astride the second corresponding fold line by providing, according to the embodiment of the invention more particularly described here, a recessed part on either side of said line in the form of a slot of equal thickness to that of the plate 14. After forming the Chinese cap of the plate 14, the latter is therefore introduced by loading the sheet of thermoplastic material 13 downwards.
• the sheet of thermoplastic material has curtain portions 23 of free material extending from the opposite edges 21 of the plate provided with pins 20 over a length sufficient to, at first, fall back on the exterior of the half-box above the walls formed by the second flaps 4 and 6 when the sheet of plastic material is pressed against the bottom of the half-box (see FIG. 4), and in a second step, is cover each other by fully encompassing the load and block said load 24 by thermal shrinkage of the film 13 (see FIGS. 5 and 6).
• the plate 14 in a Chinese hat is pressed against the bottom of the box, until it comes to the sheet blocking position between plate and bottom, by placing said plate in abutment against the bottom of the box, the studs 20 snapping into the recesses 22 by trapping the plastic film in said snaps.
• the plastic film repelled by the end of the tenons is also protected from any external contact by virtue of the external tabs 10 located opposite the recesses of the fold lines 9 ′ between second flaps and second flaps.
• the packaging is then finished (cf. FIGS. 7 and 8) by adding a cover 25 constituted in a manner known per se by a central flap 26 of identical shape and dimensions to those of horizontal section of the box, said central flap comprising rectangular lateral flaps 27 arranged to be bonded to the upper part of the external face of the corresponding main flaps, and small end tabs 28 arranged to be bonded to the external face of the intermediate flaps 7 of the body.
• pins 30 on the upper edge 31 of second main flaps 4 and 6 are provided, in which case complementary recesses are for example plumbed on the bottom of the body.
• Recesses 32 in the form of a slot are also produced on the cover 25 at the fold lines 33 between the main flap 26 and the side flaps 27 corresponding to the upper edges provided with the pins 30 of the half-box.
• FIGS. 9 and 9A show the set of blanks for producing the packaging half-box described with reference to FIGS. 1 to 8.
• the assembly comprises a first blank 40 consisting of a series of flaps 41 connected in pairs by first fold or junction lines 42, parallel to each other, said series of flaps being terminated by a bonding tab 43 and comprising two series of main flaps, namely a first series of so-called first flaps 44 and 46 and a second series of so-called second flaps 45 and 47.
• the main flaps are also separated and / or terminated if necessary, by intermediate flaps 48 capable of forming the cut corners of the box.
• the blank comprises a first set of lateral flaps arranged on one side and connected to the main flaps by second fold lines 49 and 49 'aligned or substantially aligned with each other, namely two first flaps 50 connected to the first flaps 44 and 46 and two second substantially rectangular flaps 51 connected to the two second flaps 45 and 47.
• the first flaps have a substantially rectangular shape comprising, near the second junction lines 49, a 45 ° oblique part extending outward from the second junction lines, then a straight part parallel to the first lines of folding 42.
• the first flaps each have respectively on the part of their two lateral sides parallel to the first folding lines 42, reinforcement tabs 52 connected to said flaps by lines folding 53 and arranged to be folded and glued on the outer face of the second main flaps 45 and 47 adjacent around said folding lines, which are simple.
• the lines 53 are double.
• the second flaps 51 are in turn connected to the second flaps 45 and 47 by second fold lines 49 ', which are, as indicated above, aligned or substantially aligned with the second junction lines 49 between first flaps and first flaps .
• the second flaps have sides of complementary shape to the first flaps, to optimize the use of cardboard.
• the lines 49 ′ are for example double in the case in particular of thick corrugated cardboard, so as to allow the folding of the second flaps 51 to 180 ° on the internal faces of the future half-box.
• the second joining or folding lines 49 ′ include, for each flap 51, two recesses 54 in the form of a slot, for example 3 cm in length and width equal to or slightly greater than two thicknesses of plate.
• the recess comprises a first slit part of width equal to an added thickness of plate, hollowed out in the second flap along the first line of the double fold line 49 ', and a second part of slot of width also equal to that of the plate, hollowed out in the second adjacent flap, along the second fold line of the double line.
• FIG. 9A shows a plate 55 provided with a central flap 56 of octagonal shape identical to that of the bottom of the half-body produced with the blank 40, comprising on its two longitudinal edges 57 tenons 58 arranged to cooperate with the recesses 54 On its two other opposite sides, the plate comprises respectively two third rectangular flaps 59 connected to the central flap by third junction lines 60.
• the plate also includes a central fold line 61 merged with the longitudinal axis of symmetry of the plate.
• the plate includes a double tear strip 62 (for example a strip of plastic material inserted in the carton), which the user can grasp, for example, through the orifice 63 provided for this purpose.
• a double tear strip 62 for example a strip of plastic material inserted in the carton
• FIG. 10 shows another embodiment of blank 66, with eight flaps.
• FIG. 12 shows another embodiment of a plate 70 according to the invention which here comprises third double junction lines 71 and tear-off means 72 constituted in a manner known per se by a central gripping orifice connected to the four corners of the plate by frangible and / or precut lines 73, for tearing off the plate.
• FIGS. 13 and 14 show an embodiment of a box 74 with four sides by winding around a mandrel 75, from a blank 80 provided with four main flaps, and a set of four corresponding flaps, the second flaps being used in double folding. More specifically, FIG. 13 shows a blank 80 provided with two first main flaps 81 and two second main flaps 82, the first main flaps being provided with first flaps 83 provided with two lateral tabs 84 and the second main flaps 82 each comprising a second flap 85 provided with recesses 86 on the second junction line 87, arranged to cooperate with the tenons facing the plate concerned, said second flaps 85 being folded (arrow 88) and glued to the internal face of the second parts 82.
• FIG. 13 shows in exploded view and in section the detail of the latching of the plate 14 according to the embodiment of the invention of Figures 1 to 8.
• the plate 14 here comprises on each of its longitudinal edges 21, two tenons 20 called double bearing, namely a first bearing 20 'and an end bearing 20''.
• first recess 22 ′ formed above the second junction line 9 ′ in the second flap 11 which is folded over, of a shape complementary to the first part of the stud forming the first bearing, and a second recess 22 '' of complementary shape and coming to cooperate with the second bearing 20 '', the second recess being in the second flap 4 facing one another allowing penetration of the post on two thicknesses of cardboard wall.
• FIG. 16 shows a device 100 for manufacturing a cardboard packaging box or the like for transporting a load, said box being formed from a half-box 101 comprising a lateral belt 102 formed from at least four vertical walls and a horizontal bottom 103 secured to said belt by junction lines 104 and a film 105 of heat-shrinkable plastic material intended for packaging and holding the load in place.
• the device comprises means (not shown) for forming the bottom and the vertical walls of the box, for example comprising a mandrel as shown in FIGS. 13 and 14, means 106 for bringing the semi-crate into the setting position. place of the plate for example comprising a conveyor belt 107 in noria, with stop 108 for holding the body, and means 109 (see FIG. 22) for taking up the half-body provided with its plastic film towards the station filling the load (not shown).
• the device 100 includes means 111 for presenting the film 105 in plastic material above the box, for example by means of rollers 113 pulling the film continuously above the box and means for cutting the film at dimensions and of the perforated part (not shown) known in themselves.
• Means 114 for preparing the plate 115 according to the invention with vertical positioning of the third flaps 116 are provided.
• They comprise jacks 117 for straightening the third flaps 116, then for folding towards the center of the plate, and gluing means (not shown) from above said third flaps.
• the device comprises means 118 for folding in a Chinese hat, around a longitudinal folding line 119, of the plate, for example above the film.
• the folding means 118 comprise for example (see FIG. 20) two rollers 120 and a retractable counter roller 120 '.
• Cylinders 121 mounted on a carriage back and forth allow the positioning of the plate above the plastic film.
• the device 100 includes means 122 for inserting the plate held in a Chinese hat, for example loading the film into the box.
• the device comprises means (not shown) for introducing the plastic film separately from the plate, allowing the film to be placed in the box before the introduction of the plate in a Chinese hat.
• the means for introducing in particular the plate comprise for example a piston 123, said means then being suitable for pressing the plate on the bottom of the half-body 101, by pressing on it until it encloses the central part of the heat shrinkable film under pressure on the internal face of the bottom, letting the portions of curtains 124 of free plastic material escape on either side, extending from the opposite edges of the plate over a length sufficient to eventually exit the box in a first time, and then cover the load by completely enveloping it.
• Gluing means are also provided at the appropriate location by glue, for example of the "Hot melt” type in English language, either from the bottom surface of the plate, or from the bottom of the box, on the appropriate surface.
• the device advantageously comprises means for cutting (not shown) at least one orifice in the plastic film, for fixing the lower face of the plate to the bottom of the half-case in vis- opposite, through this orifice.
• the device further comprises means 125 for introducing the load into the box known in themselves, means (not shown) for folding down the curtain portions on the load and heating means, for example by moving in a heating tunnel, film, for thermal shrinkage on the load.
• the packaging is then closed by a cover of the type described above in a manner known per se.
• the plate has third flaps
• these can either be shaped and pressed against the internal face of the corresponding flaps by simple natural straightening of said third flaps during vertical compression, and therefore flattening the plate, and / or can be plated by means of push cylinders horizontal introduced into the half-body before removal of the vertical cylinder, of the piston type (not shown).
• the half-body 1 or 101 is first of all formed, for example around a mandrel.
• the film is cut, perforated, and then placed above the half-body, the bottom of which has been previously glued.
• the plate is then presented previously shaped as a Chinese hat, above the plastic film (see FIGS. 2 and 20), the plate being for example taken by means of suction cups (not shown) and it is placed above the plastic sheet.
• the third flaps are then glued to the internal faces of the first flaps, then the load is put in place.
• FIGS. 23 to 28 show a box 201 for packaging a load obtained from a tray comprising a bottom 202 and four side walls, namely two first opposite walls 203 and two second opposite walls 204, a film 205 of heat-shrinkable plastic material, in rectangular ply, provided with an orifice 206, for example in the form of a rectangular and / or oval slot two to three centimeters wide and 5 to 10 cm long.
• the box comprises an attached plate 207, rectangular, of the same dimension as the section of the box, comprising a median line 208 of provisional longitudinal folding of the plate in a Chinese hat, parallel to the two second walls 204 of the tray.
• the Chinese hat is folded at an angle sufficiently acute, for example less than 60 °, for example 40 ° or less, to leave on either side of its edges 209 an empty space large enough to avoid any damage to the plastic film 205, and allow movement of the lowering arm and application of the film on either side of the inverted V plate.
• the process for manufacturing the box corresponding to FIGS. 23 to 28 will now be described in more detail.
• the tray 201 being formed, and the bottom 202 previously glued to the right of the slot 206, the plastic film is brought in and shaped in a U or V shape below the open face of the tray (see FIG. 24).
• the plastic film thus formed is lowered to the bottom 202 of the tray.
• the plate 207 shaped like a Chinese hat is then lowered in turn, until its edges 209 abut on the plastic film against which they slide until the plate 207 is horizontal and comes to stick on the bottom. 202 through hole 206.
• the plastic film is then blocked on the bottom while being sandwiched between the bottom and the plate.

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• 1997
  • 1997-04-24 FR FR9705092A patent/FR2762586B1/fr not_active Expired - Fee Related
• 1998
  • 1998-04-24 DE DE69811359T patent/DE69811359T2/de not_active Expired - Lifetime
  • 1998-04-24 DE DE69813315T patent/DE69813315T2/de not_active Expired - Lifetime
  • 1998-04-24 US US09/403,410 patent/US6264034B1/en not_active Expired - Lifetime
  • 1998-04-24 AU AU75355/98A patent/AU7535598A/en not_active Abandoned
  • 1998-04-24 CA CA002287497A patent/CA2287497A1/fr not_active Abandoned
  • 1998-04-24 EP EP98922870A patent/EP0977690B1/de not_active Expired - Lifetime
  • 1998-04-24 JP JP54518098A patent/JP3990466B2/ja not_active Expired - Lifetime
  • 1998-04-24 WO PCT/FR1998/000834 patent/WO1998047774A1/fr active IP Right Grant
  • 1998-04-24 EP EP01122693A patent/EP1188676B1/de not_active Expired - Lifetime

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