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EP0697338B1 - Package for a product of non specific shape, set of blanks, process and device for obtaining such a package - Google Patents

Package for a product of non specific shape, set of blanks, process and device for obtaining such a package Download PDF

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Publication number
EP0697338B1
EP0697338B1 EP95401819A EP95401819A EP0697338B1 EP 0697338 B1 EP0697338 B1 EP 0697338B1 EP 95401819 A EP95401819 A EP 95401819A EP 95401819 A EP95401819 A EP 95401819A EP 0697338 B1 EP0697338 B1 EP 0697338B1
Authority
EP
European Patent Office
Prior art keywords
tray
packaging
blank
panel
bag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95401819A
Other languages
German (de)
French (fr)
Other versions
EP0697338A1 (en
Inventor
Pascal Le Floc'h
Gérard Mathieu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otor SA
Original Assignee
Otor SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otor SA filed Critical Otor SA
Publication of EP0697338A1 publication Critical patent/EP0697338A1/en
Application granted granted Critical
Publication of EP0697338B1 publication Critical patent/EP0697338B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a composite packaging packaging for a product of non-specific type of type comprising a box of polygonal cross section made of sheet material of cardboard or corrugated cardboard, comprising a belt of side flaps, a bottom and a top, and a sheet. or a heat-shrinkable plastic bag, fixed to said box by gluing, blocking by heat-contraction of the product or products against the bottom.
  • It also relates to a set of blanks, a device and a method for obtaining such packaging.
  • Packages are already known for packaging in a film of heat-shrinkable plastic material of at least one product of the type defined above.
  • the document FR 2.625.181 describes for example a package where the film is glued to the bottom of the package and folded over the products to be held against the bottom.
  • FR-A-2 577 519 is a packaging with shrink film in two parts, base and cover.
  • the document FR-A-2 506 722 describes a package and a set of blanks corresponding to the preambles of claims 1 and 12.
  • Heating these packages to obtain heat shrinkage is also difficult to implement given the structural difficulties, linked to the packaging, of circulation of a convective fluid around the film to be shrunk.
  • the present invention aims to provide a packaging, a set of blanks, a method and a packaging device for products of non-specific shape, which meet the requirements of practice better than those previously known, in particular in that it allows automatic manufacture. packaging, optimized heating of the film to be shrunk, while guaranteeing excellent fixing of the film or plastic bag on the cardboard box.
  • the resistance to tearing or shearing of the connections between plastic sheet and internal walls is improved, which avoids separation between products and box when the packaging is subject to shocks, drops or overturning, especially during handling.
  • the invention provides in particular a composite packaging packaging for at least one product of non-specific shape not occupying the entire available volume of the packaging, as defined in claim 1.
  • the invention also relates to a set of blanks for the manufacture of a composite packaging packaging for at least one product of non-specific shape not occupying the entire available volume of the packaging, as defined in claim 12.
  • each of said series of enveloping flaps comprises a second enveloping flap, at the end, capable of being folded down on the upper external face of the tray by folding to form at least partially the cover of the packaging.
  • one of said series of enveloping flaps comprises a single flap and the other series comprises at least two.
  • the other series has three components.
  • the width of an enveloping flap or the sum of the respective widths of the two end enveloping flaps is equal or substantially equal to the width of the central flap of the tray on which the said enveloping flap or flaps 'end are arranged to be glued to form the cover of the package.
  • the width of the two second opposite lateral flaps devoid of secondary flap is smaller than that of the first two lateral flaps.
  • the means for forming the first assembly comprise means for folding a blank to form the tray and means for bringing and bonding the film or the bag to the peripheral edges of the tray thus formed.
  • the means for forming the first assembly comprise means for bonding the film or the plastic bag to the flat blank intended to form said tray, then means for shaping the assembly for obtain said tray internally covered with film by folding.
  • the means for bonding the film or the bag to the tray are arranged to glue said film or said bag to the internal peripheral edges of two opposite walls of the tray.
  • the means for bonding the film or the bag to the tray are arranged to adhere said film or said bag to the outer peripheral edges of two opposite walls of the tray.
  • FIG. 1A shows a blank 1 of corrugated cardboard comprising a perforated central rectangular panel 2, for example having four identical rectangular windows 3, symmetrically distributed, the sum of the areas of which occupies substantially 9/10 of the surface of said panel.
  • the central flap 2 is provided with four rectangular lateral flaps respectively connected to the four sides of said central flap by first fold lines 4, namely two first opposite lateral flaps 5, each provided with two secondary end flaps 6, rectangular, of the same width as said first flaps 5, located in the extension of those -this, and connected on either side of said first lateral flaps by second fold lines 7 perpendicular to the first fold lines of the same flaps, and two second opposite lateral flaps 8, without secondary flaps, of the same width as the secondary flaps of the first lateral flaps.
  • FIG. 1B shows a first assembly 9 belonging to a package according to the invention, comprising a tray 10 obtained from the folded blank 1, the secondary flaps 6 of which have been glued to the internal face 11 of the second flaps 8, the lines of folding 7 and 4 being slightly offset accordingly.
  • the secondary flaps can be glued to the external face 12 of the second flaps; in this case, the offset between fold lines is in the opposite direction.
  • the assembly 9 further comprises a plastic film 13 (in phantom 13 ') brought on top of the tray 10 which has been shaped.
  • the film 13 is rectangular, of width substantially equal to a dimension of the central flap 2, for example the length thereof, and of length greater than the length of the blank 1 obtained by adding the other dimension of the central flap and lengths of the first two parts 5.
  • the film is fixed on the peripheral edges 14 of the first flaps 5, on the external part 16 of the walls of the tray thus formed, by lines of glue 17 (see FIG. 1B '), the peripheral edge 18 of the film therefore being astride. on the edges 14 of the first flaps 5, and the two other opposite peripheral edges 19 of the film substantially coinciding with the fold lines 4 of the bottom of the tray.
  • FIG. 2A shows the blank 1 on which this time comes first of all fixing the film 13 by gluing on the internal face 20 of the first flaps 5 along the peripheral edges 14 (glue line 21) of said first flaps, before folding, to obtain, after folding, the assembly 9 with film glued internally as shown in Figures 2B and 2B '.
  • FIG. 3 shows the assembly 9 (tray 10 + film 13) in which products 22 of different shapes have been placed, on which a sheet of corrugated cardboard 23 is placed to form the bottom of the packaging after turning over ( see figure 4).
  • the sheet 23 is constituted by a blank comprising a rectangular main flap 24, suitable for forming the bottom of the packaging, provided with two identical end side flaps 25, opposite in the transverse direction of the blank, rectangular or trapezoidal. of small base directed outwards, connected by lines of folding 26 to said main flap, the distance between the folding lines 26 being arranged to allow the open face 27 of the tray 10 to be covered, taking account of the cumulative thicknesses of the flaps 8.
  • the blank also comprises two series 28 and 29 of rectangular flaps of transverse dimension identical or slightly less than that of the main flap 24, located on either side of the main flap 24 connected to each other by parallel fold lines 30 .
  • Each series comprises a first enveloping shutter 31, rectangular, covering a wall 32 of the tray on which is fixed the film of heat-shrinkable plastic 13 and a second wrapping shutter 33, suitable for being folded down on the external face of the bottom of the tray.
  • FIG. 4 shows the assembly 34 obtained after gluing on the one hand of the lateral end flaps 25 on the second flaps 8, and on the other hand of the first enveloping flaps 31 on the external face of the walls 32 and turning over, the second enveloping flaps 33 remaining open to allow, via the windows 3 at the bottom of the tray, access to the heat transfer fluid towards the heat-shrinkable film.
  • FIG. 5 shows a variant 35 of the assembly of FIG. 4, in which the length of the second opposite lateral flaps 8 devoid of secondary flap, is smaller than that of the first two lateral flaps 5 and of their secondary end flaps 6 which leaves a passage 36 for circulation of a heat-transfer fluid (arrow 37) above the internal face 38 of the main flap 24, before closing and gluing the side end flaps 25.
  • FIG. 6 shows the embodiment of the packaging according to the invention more particularly described here at the time of its complete closure, after heat-shrinking of the plastic film 13 on the products 22.
  • the second flaps 33 previously glued with lines of glue 39, for example of glue called "hot melt” or cold glue, continuous or interrupted, 39 on their respective internal peripheral end parts, are pressed on the external face of the central flap 2, perforated, which comprises opposite lines of glue, a non-perforated part 40 to cooperate with said glued end parts.
  • lines of glue 39 for example of glue called "hot melt” or cold glue, continuous or interrupted, 39 on their respective internal peripheral end parts
  • edges 41 of the end parts of the two flaps 33 are for example contiguous once said flaps folded over the bottom 2, which gives a finished appearance and ensures good solidity and integrity of the packaging obtained.
  • FIG. 7 shows a first step 42 of bringing in the blank 1, a second step 43 of forming the tray 10 and of bringing film 13 or the bag 44 above said tray, and a third step 45 for bonding the film 13 to the tray, the external faces 16 of two walls of which have been glued beforehand.
  • FIG. 7 corresponds to that described with reference to lines 1A, 1B and 1B '.
  • Figure 8 corresponds to the process mentioned with reference to Figures 2A, 2B and 2B '.
  • It comprises a first step 46 of bringing film 13 or bag 44 onto the flat blank 1, the film being substantially the same width as the blank, a second step 47 of bonding the film to said flat blank whose edges internal peripherals 14 were previously glued, then a third step 48 of forming the tray, the film then marrying the internal faces of said tray to give the first set 9.
  • FIG. 9 shows an embodiment of the method combining bonding on the internal and external edges of the first flaps 5.
  • the first step 49 is identical to step 46. Then, after gluing of the internal and external peripheral edges of the blank, the film 13 is wider (step 50) than the blank on the latter, then the ends are folded down 51 of the film around the edges, and the tray is erected (step 52) to obtain an assembly with double bonding, internal and external, of the film on the peripheral edges 14 of the first flaps 5.
  • FIG. 10 shows the last two steps of the method according to the invention more particularly described here, namely step 52 of heating by heat transfer fluid 53, for example blown from above, and drawn in at 54 from the sides, then from the bottom of the packaging, and step 55 of closing the flaps 33 and gluing on a central tongue 56 of the perforated bottom of the tray.
  • FIG. 11 schematically shows in section two packages according to the invention with variant cover, namely a package 57 with two rectangular end flaps 58 of the same width, the edges 59 of which are joined, in the center of the package, when '' they are glued to the central tab 60, separating the openings from the perforated bottom 61, and a package 62 comprising a small end flap 63 of small width, for example equal to one tenth of the total width of the package, and a large flap 64 substantially covering the entire bottom 65 of the inverted tray.
  • FIG 12 there is shown schematically the stages of manufacturing a package according to the invention with a bag or bag 66.
  • the bag 66 is for example glued to the preformed tray 67 with perforated bottom, on the outer edge of two vertical walls 68 facing the tray. Then the bag 66 is opened by the sides 69, and filled with products 70.
  • the cover 71 is then put in place to close the second set, which is turned over, then the bag is shrunk by heat on the products before the flaps 72 are closed.
  • FIG. 13 shows a blank 73 for constituting a tray for packaging according to the invention.
  • the bottom 74 is perforated by a series of rows 75 of longitudinal windows 76, for example seven rows of two rectangular windows each, namely a small window and a large window staggered from row to row.
  • the second flaps 77 devoid of secondary flaps of the blank comprise a notch 78, for example rectangular, centered, on the peripheral edge of said flap, which will allow circulation of the heat transfer fluid during heating, along the plastic film.
  • FIG. 14 shows another blank 79 for a tray according to the invention with a central opening 80 occupying 8/10 of the surface of the central flap 81.
  • FIGS. 15 and 16 respectively show two blanks 82 and 83 for forming the bottom of the package according to the invention, namely a blank 82 provided with an end flap 84 suitable for completely covering the bottom of the inverted tray , and a blank 83 provided with an end flap 85 in the extension of the flaps 86 suitable for completely covering the bottom of the tray, arranged to come to cover a vertical wall of said tray and whose edge 87 comes to cooperate joined or substantially contiguously with the edge 88 of the flap 89 located on the opposite side of the central flap 90 of the blank 83, relative to said central flap 90.
  • FIG. 17 shows means 91 for forming a first assembly 92 comprising a corrugated cardboard tray 93 and a film of heat-shrinkable plastic 94 (in phantom in the figure).
  • these means 91 comprise a device 95 for vertical storage and unstacking of blanks 96 capable of forming said tray, known in itself.
  • the blanks 96 are deposited one by one on a conveyor belt 97 which moves the blank transversely to bring it below a machine 98 suitable for punching, by lowering a piston 99 of a shape complementary to that of the internal volume of the tray , said blank towards a position 100 after guiding inside a shaping well 101, so as to obtain the formed tray 93.
  • Sizing means 102 known in themselves have previously made it possible to glue the flaps of the blank so that the flaps of the tray can be glued to one another as described above.
  • the tray 93 is then brought by means of a conveyor belt 103 (in phantom in Figure 17) to a position for placing the plastic film.
  • glue injectors When transferring to 104, glue injectors, for example always of the type known by the Anglo-Saxon name “hot melt”, apply the glue bead (s) necessary for the subsequent fixing of the plastic film on the outer edges of the tray , in a manner known per se.
  • the film is then placed so as to form an assembly 92 of the type shown in FIG. 1B.
  • the assembly 92 is then taken up for example by a conveyor belt towards means 105 arranged for bring and to place the products to be packaged in said tray, in a manner known per se.
  • the machine comprises a chassis 106, a piston 99, means for guiding the piston 107 and means for vertical displacement 108 of the piston, for example hydraulic.
  • the head of the piston has a shape complementary to that of the internal volume of the tray; it is suitable for pressing on the blank 96, in order to gradually shape it via an external guide funnel 110 having a trapezoidal upper part, belonging to the well 101, in order to obtain the tray 93, which can then be taken up by the carpet 103.
  • Figure 19 there is shown the device for placing the plastic film 94 which is unwound from a reel 111 via a displacement system with successive motorized rollers 112, also used for tensioning the plastic film at above the tray to be fitted.
  • means 113 are provided for vertical displacements of the film and for applying said film to the internal wall of the tray, means moreover making it possible to bond the ends 114 of the film to the external peripheries 115 of the tray, peripheries which have been previously glued.
  • Means 116 which will be more particularly described with reference to FIG. 21 allow by elsewhere, the positioning of this film so that it matches the bottom of the tray 115.
  • FIG. 20 shows a top view along arrow XX of the top of the plastic film 94 when it is going to be applied to the tray, the bottom of which appears in transparency at 118.
  • a pin or gripping bar 119 for example by pinching the end of the film to be unrolled over the width of the latter, slides horizontally between a position 119 '(in broken lines on the FIG. 20) where it comes to seek the end of the film, and a position 119 "where the film is unrolled above the tray.
  • a fixed bar supports from below the film thus unrolled, cutting means 120 ′ allowing cut the film to the desired length.
  • Retractable means comprising two parallel horizontal rods 122 extending in line with the vertical walls of the tray between a position where the film rests on the rods, and a position (not shown in the figures) where the rods are retracted for completely free the space between the film and the tray.
  • Each rod has a flat arm 121, articulated in rotation around a corresponding rod, arranged to exert a back pressure inside the tray, the film being applied externally opposite to the upper edges of the walls of the tray via pushing means 123, also articulated and retractable.
  • the flat applicator arms 121 are erased and the plastic film is pushed in via the pushing means 116 shown on FIG. 19, known in themselves, comprising pusher cylinders terminated by pusher pads 125.
  • the first assembly 92 obtained in the first part of the device, and in which the packages 127 have been placed, is brought by conveyor belt 128, via an external gluing station for the flaps 129, to a device 130 for positioning of the upper casing 132 supported, on its peripheral edges perpendicular to the direction of advance of the belt 128, by lateral rails 131.
  • This device 130 comprises a lifting plate 133 which brings the tray, with grip to the passage of the envelope 132, in an upper position 134.
  • the assembly is then pushed in a manner known in itself by a pushing means of the hydraulic jack type 135 on the turning device 136 which comprises a first connecting rod 137 actuated by a motor 138, and a second connecting rod 137 ', the upper end of the two connecting rods being fixed on either side of the diameter of a disc 137'' integral in rotation with the support means of the packaging during its inversion, the system of connecting rods allowing a back and forth movement causing the rotation of 180 ° of the assembly.
  • the device 136 comprises means known in themselves making it possible to support the products 127 from below, for example through the openings in the perforated wall 139 of the tray, holding means 140 and means 141 then allowing the evacuation on a conveyor belt 142 after turning over.
  • the heating means used are known in themselves and include, for example, a device for blowing hot air.
  • Vacuum means 145 are also advantageously provided for removing the heat transfer fluid.
  • the entire package is then directed via the conveyor belt 142 to applicator means (not shown) for pressurizing the covers 143 on the top of the package now formed by the perforated bottom of the inverted tray 139, gluing means (not shown) having meanwhile interposed the necessary adhesive threads, before pressurization.
  • the packaging is then disposed of in a manner known per se.
  • FIGS 23 and 24 give details of embodiment of the device 130 for placing the envelope.
  • the device 130 comprises means 150 for horizontal storage and unstacking of the envelope blank 132.
  • the blank is taken up from below via a conveyor belt 151, brought above the tray 93, under an inverted funnel 152, the lower part of which allows the envelope to be guided during its folding around the tray, and the upper part is a parallelepiped channel of internal dimensions corresponding to the external dimensions of the tray covered with the envelope with which it cooperates in friction.
  • the tray is then moved upward and thereby causes the casing 132 which comes to cap and wrap said tray whose walls, in the end position are located above the upper edge of said upper part of the funnel.
  • Pads 153 for pressurizing the lateral flaps of the envelope on the lateral flaps forming the walls of the tray are also provided and complete the bonding.
  • FIG. 24 schematically shows a view of the turning device 136.
  • Means 154 for holding the products from below, for example comprising retractable pistons 155 adapted to come through windows 156 of the perforated bottom of the tray are provided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Cartons (AREA)
  • Buffer Packaging (AREA)

Abstract

The package consists of a box of polygonal cross-section, made from card or corrugated cardboard with a middle strip, a top and a bottom, and a sheet or a bag of a heat-shrink plastics material, stuck to the box with adhesive. The box is in the form of an inverted tray with its walls forming the middle strip, and with apertures in its base. The thermo-shrink plastics is attached to two opposite sides of the tray. The tray is made from a single panel of card or cardboard with a series of rectangular flaps which are folded to form its sides.

Description

La présente invention concerne un emballage de conditionnement composite pour produit de forme non spécifique du type comprenant une boîte de section transversale polygonale en matériau en feuille de carton ou carton ondulé, comportant une ceinture de volets latéraux, un fond et un dessus, et une feuille ou un sac en matière plastique thermo-rétractable, fixé à ladite boîte par collage, de blocage par thermo-contraction du ou des produits contre le fond.The present invention relates to a composite packaging packaging for a product of non-specific type of type comprising a box of polygonal cross section made of sheet material of cardboard or corrugated cardboard, comprising a belt of side flaps, a bottom and a top, and a sheet. or a heat-shrinkable plastic bag, fixed to said box by gluing, blocking by heat-contraction of the product or products against the bottom.

Elle concerne également un ensemble de flans, un dispositif et un procédé pour obtenir un tel emballage.It also relates to a set of blanks, a device and a method for obtaining such packaging.

Elle trouve une application particulièrement importante bien que non exclusive dans le domaine du transport par la poste de produits ou de lots de produits de volumes différents tels que des livres, des fournitures de bureau, etc., propres à être entièrement contenus dans le volume interne de l'emballage mais sans en occuper tout l'espace, et qui vont ainsi pouvoir être maintenus fermement en position contre une face intérieure de l'emballage, quelque soit la position de celui-ci lors du transport.It finds a particularly important although not exclusive application in the field of the transport by post of products or batches of products of different volumes such as books, office supplies, etc., suitable for being entirely contained in the internal volume. of the packaging but without occupying all the space, and which will thus be able to be held firmly in position against an interior face of the packaging, whatever the position of the latter during transport.

On connaît déjà des emballages pour le conditionnement sous film en matière plastique thermo-rétractable d'au moins un produit du type ci-dessus défini.Packages are already known for packaging in a film of heat-shrinkable plastic material of at least one product of the type defined above.

Le document FR 2.625.181 décrit par exemple un emballage où le film est collé sur le fond de l'emballage et rabattu sur les produits à maintenir contre le fond.The document FR 2.625.181 describes for example a package where the film is glued to the bottom of the package and folded over the products to be held against the bottom.

On connaît également (FR-A-2 577 519) un emballage avec film rétractable en deux parties, socle et couvercle.Also known (FR-A-2 577 519) is a packaging with shrink film in two parts, base and cover.

Le document FR-A-2 506 722 décrit un emballage et un ensemble de flans correspondant aux préambules des revendications 1 et 12.The document FR-A-2 506 722 describes a package and a set of blanks corresponding to the preambles of claims 1 and 12.

De tels emballages présentent des inconvénients.Such packaging has drawbacks.

Ils sont tout d'abord peu aisés à fabriquer. Leur montage est en effet difficilement mécanisable. La nécessité de rabattre le film plastique sur les produits à transporter entraîne par ailleurs une plus grande consommation de matière plastique, du fait du recouvrement nécessaire entre rabats.First of all, they are not easy to manufacture. Their assembly is indeed difficult to mechanize. The need to fold the plastic film over the products to be transported also results in greater consumption of plastic material, due to the necessary overlap between flaps.

Le chauffage de ces emballages pour obtenir la thermo-rétraction est également difficile à mettre en oeuvre compte tenu des difficultés structurelles, liées à l'emballage, de circulation d'un fluide convecteur autour du film à rétracter.Heating these packages to obtain heat shrinkage is also difficult to implement given the structural difficulties, linked to the packaging, of circulation of a convective fluid around the film to be shrunk.

La présente invention vise à fournir un emballage, un ensemble de flans, un procédé et un dispositif de conditionnement pour produits de forme non spécifique, répondant mieux que ceux antérieurement connus aux exigences de la pratique, notamment en ce qu'elle autorise une fabrication automatique des emballages, un chauffage optimisé du film à rétracter et ce tout en garantissant une excellente fixation du film ou du sac en matière plastique sur la boîte en carton.The present invention aims to provide a packaging, a set of blanks, a method and a packaging device for products of non-specific shape, which meet the requirements of practice better than those previously known, in particular in that it allows automatic manufacture. packaging, optimized heating of the film to be shrunk, while guaranteeing excellent fixing of the film or plastic bag on the cardboard box.

Avec l'invention, la résistance à l'arrachage ou au cisaillement des liaisons entre feuille en matière plastique et parois internes est améliorée, ce qui évite la désolidarisation entre produits et boîte lorsque l'emballage est soumis à des chocs, chutes ou retournements notamment lors des manutentions.With the invention, the resistance to tearing or shearing of the connections between plastic sheet and internal walls is improved, which avoids separation between products and box when the packaging is subject to shocks, drops or overturning, especially during handling.

Dans ce but, l'invention propose notamment un emballage de conditionnement composite pour au moins un produit de forme non spécifique n'occupant pas la totalité du volume disponible de l'emballage, tel que défini dans la revendication 1.To this end, the invention provides in particular a composite packaging packaging for at least one product of non-specific shape not occupying the entire available volume of the packaging, as defined in claim 1.

Dans des modes de réalisation avantageux on a de plus recours à l'une et/ou à l'autre des dispositions suivantes :

  • le fond de la barquette est ajouré sur une superficie de dimension supérieure à la moitié de la superficie dudit fond ;
  • la feuille, ou le sac, de matière plastique est fixé sur le bord périphérique interne de deux parois opposées de la barquette ;
  • la feuille, ou le sac, de matière plastique est fixé sur le bord périphérique externe de deux parois opposées de la barquette ;
  • la barquette retournée est obtenue par pliage d'un flan comprenant un volet central rectangulaire formant le fond de ladite barquette, ledit volet central étant muni de quatre rabats latéraux rectangulaires respectivement reliés aux quatre côtés dudit volet central par des lignes de pliage et formant les parois de la barquette, à savoir deux premiers rabats latéraux opposés, chacun muni de deux rabats secondaires d'extrémité reliés de part et d'autre par des lignes de pliage audit premier rabat latéral correspondant, et deux seconds rabats latéraux opposés dénués de rabats secondaires, lesdits rabats secondaires d'extrémité étant chacun fixé par collage sur ledit second rabat latéral adjacent ;
  • la largeur des deux seconds rabats latéraux opposés dénués de rabat secondaire, est plus petite que celle des deux premiers rabats latéraux ;
  • la feuille formant le fond de l'emballage est obtenue à partir d'un flan comprenant une suite de volets rectangulaires reliés les uns aux autres par des lignes de pliage parallèles, à savoir un volet principal rectangulaire formant le fond de l'emballage, muni de deux rabats latéraux d'extrémité reliés par des lignes de pliage à deux côtés opposés dudit volet principal et fixés par collage sur les rabats latéraux correspondants du flan formant les parois de la barquette, et deux séries de volets enveloppants reliées audit volet principal sur ses deux autres côtés, chaque série comprenant au moins un premier volet enveloppant rectangulaire de recouvrement d'une autre paroi de ladite barquette ;
  • chacune desdites séries comprend un deuxième volet enveloppant, d'extrémité, rabattu sur la face supérieure externe de la boîte intermédiaire par pliage pour former le couvercle de l'emballage ;
  • une desdites séries de volets enveloppants comporte un seul volet et l'autre en comporte au moins deux ;
  • l'autre série comporte trois volets ;
  • la largeur d'un volet enveloppant ou la somme des largeurs respectives des deux volets enveloppants d'extrémité est égale ou sensiblement égale à la largeur du volet central de la barquette sur lequel le ou lesdits volets enveloppants d'extrémité sont collés pour former le couvercle de l'emballage.
In advantageous embodiments, one and / or the other of the following arrangements are also used:
  • the bottom of the tray is perforated over an area of dimension greater than half the area of said bottom;
  • the sheet, or bag, of plastic material is fixed on the inner peripheral edge of two opposite walls of the tray;
  • the sheet, or bag, of plastic material is fixed on the outer peripheral edge of two opposite walls of the tray;
  • the inverted tray is obtained by folding a blank comprising a rectangular central flap forming the bottom of said tray, said central flap being provided with four rectangular lateral flaps respectively connected to the four sides of said central flap by fold lines and forming the walls of the tray, namely two first opposite lateral flaps, each provided with two secondary end flaps connected on either side by fold lines to said first corresponding lateral flap, and two second opposite lateral flaps devoid of secondary flaps, said secondary end flaps each being fixed by bonding to said adjacent second side flap;
  • the width of the two second opposite lateral flaps devoid of secondary flap is smaller than that of the first two lateral flaps;
  • the sheet forming the bottom of the packaging is obtained from a blank comprising a series of rectangular flaps connected to each other by parallel fold lines, namely a main rectangular flap forming the bottom of the packaging, provided two end side flaps connected by fold lines to two opposite sides of said main flap and fixed by gluing to the corresponding side flaps of the blank forming the walls of the tray, and two series of enveloping flaps connected to said main flap on its two other sides, each series comprising at least a first rectangular enveloping flap covering another wall of said tray;
  • each of said series comprises a second enveloping flap, at the end, folded over the external upper face of the intermediate box by folding to form the cover of the packaging;
  • one of said series of enveloping flaps comprises a single flap and the other comprises at least two;
  • the other series has three parts;
  • the width of an enveloping flap or the sum of the respective widths of the two enveloping end flaps is equal or substantially equal to the width of the central flap of the tray on which the said enveloping end flap (s) are glued to form the cover of the packaging.

L'invention concerne également un ensemble de flans pour la fabrication d'un emballage de conditionnement composite pour au moins un produit de forme non spécifique n'occupant pas la totalité du volume disponible de l'emballage, tel que défini dans la revendication 12.The invention also relates to a set of blanks for the manufacture of a composite packaging packaging for at least one product of non-specific shape not occupying the entire available volume of the packaging, as defined in claim 12.

Avantageusement chacune desdites séries de volets enveloppants comprend un deuxième volet enveloppant, d'extrémité, propre à être rabattu sur la face supérieure externe de la barquette par pliage pour former au moins en partie le couvercle de l'emballage.Advantageously, each of said series of enveloping flaps comprises a second enveloping flap, at the end, capable of being folded down on the upper external face of the tray by folding to form at least partially the cover of the packaging.

Dans un mode de réalisation avantageux, une desdites séries de volets enveloppants comporte un seul volet et l'autre série en comporte au moins deux.In an advantageous embodiment, one of said series of enveloping flaps comprises a single flap and the other series comprises at least two.

Egalement avantageusement, l'autre série comporte trois volets.Also advantageously, the other series has three components.

Dans un mode de réalisation également avantageux, la largeur d'un volet enveloppant ou la somme des largeurs respectives des deux volets enveloppants d'extrémité est égale ou sensiblement égale à la largeur du volet central de la barquette sur lequel le ou lesdits volets enveloppants d'extrémité sont agencés pour être collés pour former le couvercle de l'emballage.In an equally advantageous embodiment, the width of an enveloping flap or the sum of the respective widths of the two end enveloping flaps is equal or substantially equal to the width of the central flap of the tray on which the said enveloping flap or flaps 'end are arranged to be glued to form the cover of the package.

Egalement avantageusement, la largeur des deux seconds rabats latéraux opposés dénués de rabat secondaire, est plus petite que celle des deux premiers rabats latéraux.Also advantageously, the width of the two second opposite lateral flaps devoid of secondary flap is smaller than that of the first two lateral flaps.

L'invention concerne également un procédé d'emballage d'au moins un produit de forme non spécifique n'occupant pas la totalité du volume disponible de l'emballage, caractérisé en ce que

  • on forme un premier ensemble comprenant :
    • . une barquette en carton ou carton ondulé,
    • . et une feuille ou un sac en matière plastique thermo-rétractable collée sur les bords périphériques de deux parois opposées de la barquette,
  • on place le ou les produits à emballer dans la barquette, sur le film en matière plastique ou à l'intérieur du sac,
  • on plaque sur le dessus de ladite barquette un flan propre à recouvrir entièrement la face ouverte de la barquette et à envelopper au moins en partie ladite barquette, pour former un second ensemble,
  • on retourne ledit second ensemble de 180° en maintenant les produits en place, les produits reposant alors sur la face interne du flan recouvrant la face ouverte de ladite barquette, tout en ménageant un passage vers le film en matière plastique pour permettre son chauffage,
  • on chauffe pour rétracter le film ou le sac et plaquer le ou les produits sur ladite face interne,
  • puis on referme entièrement le flan sur la barquette retournée avec laquelle il est fixé par collage.
The invention also relates to a method of packaging at least one product of non-specific shape that does not occupy the entire available volume of the packaging, characterized in that
  • we form a first set comprising:
    • . a cardboard or corrugated container,
    • . and a sheet or a bag of heat-shrinkable plastic glued to the peripheral edges of two opposite walls of the tray,
  • the product or products to be packed are placed in the tray, on the plastic film or inside the bag,
  • a blank capable of covering the open face of the tray and at least partially wrapping said tray is placed on the top of said tray, to form a second set,
  • said second set is turned 180 ° while keeping the products in place, the products then resting on the internal face of the blank covering the open face of said tray, while providing a passage to the plastic film to allow it to be heated,
  • it is heated to retract the film or the bag and press the product or products on said internal face,
  • then the blank is completely closed on the inverted tray with which it is fixed by gluing.

Dans des modes de réalisation avantageux, on a de plus recours à l'une et/ou à l'autre des dispositions suivantes :

  • pour former le premier ensemble, on réalise tout d'abord la barquette par pliage d'un flan, puis on colle le film ou le sac sur les bords périphériques de la barquette ;
  • pour former le premier ensemble, on colle tout d'abord le film ou le sac en matière plastique sur le flan à plat destiné à former ladite barquette, puis on forme ladite barquette par pliage ;
  • on enveloppe la barquette et son contenu par le dessus avec un flan comprenant une suite de volets rectangulaires reliés les uns aux autres par des lignes de pliage parallèles, sans rabattre entièrement le dit flan autour de la barquette, lesdits volets rectangulaires comprenant:
    • . un volet principal rectangulaire plaqué sur la face ouverte de la barquette, muni de deux rabats latéraux d'extrémité reliés par des lignes de pliage à deux côtés opposés dudit volet principal, que l'on fixe par collage sur les parois de la barquette,
    • . et deux séries de volets enveloppants reliées audit volet principal sur ses deux autres côtés, chaque série comprenant au moins un premier volet enveloppant rectangulaire de recouvrement d'une autre paroi de ladite barquette et une série comprenant au moins un second volet pour recouvrir en totalité le fond de l'emballage, seconds volets que l'on laisse ouverts avant et pendant le chauffage ;
  • la barquette est obtenue par pliage d'un flan comprenant un volet central rectangulaire formant le fond de ladite barquette, et des rabats latéraux formant les parois de la barquette, lesdits rabats latéraux étant fixés entre eux par collage via des rabats secondaires ;
  • le fond de la barquette retournée étant ajouré, et un espace étant structurellement ménagé entre la face interne du flan et le bord périphérique externe d'au moins une paroi de la barquette, on chauffe en faisant circuler un fluide caloporteur sur le film ou le sac en matière plastique via le fond ajouré et ledit espace ;
  • la feuille, ou le sac, de matière plastique est fixé sur le bord périphérique interne de deux parois opposées de la barquette ;
  • la feuille, ou le sac, de matière plastique est fixé sur le bord périphérique externe de deux parois opposées de la barquette.
In advantageous embodiments, use is made of one and / or the other of the following arrangements:
  • to form the first set, the tray is first produced by folding a blank, then the film or the bag is glued to the peripheral edges of the tray;
  • to form the first assembly, firstly the film or the plastic bag is glued onto the flat blank intended to form said tray, then said tray is folded;
  • the tray and its contents are wrapped from above with a blank comprising a series of rectangular flaps connected to each other by parallel fold lines, without entirely folding the said blank around the tray, said rectangular flaps comprising:
    • . a rectangular main flap placed on the open face of the tray, provided with two lateral end flaps connected by fold lines on two opposite sides of said main flap, which are fixed by gluing to the walls of the tray,
    • . and two series of enveloping flaps connected to said main flap on its two other sides, each series comprising at least one first rectangular enveloping flap covering another wall of said tray and a series comprising at least one second flap to completely cover the bottom of the packaging, second flaps which are left open before and during heating;
  • the tray is obtained by folding a blank comprising a rectangular central flap forming the bottom of said tray, and lateral flaps forming the walls of the tray, said lateral flaps being fixed to each other by gluing via secondary flaps;
  • the bottom of the inverted tray being perforated, and a space being structurally formed between the internal face of the blank and the outer peripheral edge of at least one wall of the tray, it is heated by circulating a heat transfer fluid on the film or the bag in plastic material via the perforated bottom and said space;
  • the sheet, or bag, of plastic material is fixed on the inner peripheral edge of two opposite walls of the tray;
  • the sheet, or bag, of plastic material is fixed on the outer peripheral edge of two opposite walls of the tray.

L'invention propose également un dispositif d'emballage d'au moins un produit de forme non spécifique n'occupant pas la totalité du volume disponible de l'emballage, caractérisé en ce que il comporte :

  • des moyens pour former un premier ensemble comprenant une barquette en carton ou carton ondulé et une feuille ou un sac en matière plastique thermo-rétractable collée sur les bords périphériques de deux parois opposées de la barquette ;
  • des moyens de déplacement du premier ensemble pour remplissage du ou des produits à emballer dans la barquette, sur le film en matière plastique ou à l'intérieur du sac ;
  • des moyens pour amener et pour plaquer sur le dessus de ladite barquette un flan propre à recouvrir entièrement la face ouverte de la barquette et à envelopper au moins en partie ladite barquette, pour former un second ensemble ;
  • des moyens de retournement dudit second ensemble de 180°, et de maintien des produits pendant ledit retournement, les produits reposant après retournement sur la face interne du flan recouvrant la face ouverte de ladite barquette, tout en ménageant un passage vers le film en matière plastique pour permettre son chauffage ;
  • des moyens de chauffage agencés pour rétracter le film ou le sac et plaquer ainsi le ou les produits sur ladite face interne ;
  • et des moyens pour refermer entièrement le flan sur la barquette retournée et pour fixer ledit flan sur ladite barquette par collage.
The invention also provides a device for packaging at least one product of non-specific shape that does not occupy the entire available volume of the packaging, characterized in that it comprises:
  • means for forming a first assembly comprising a cardboard or corrugated cardboard tray and a sheet or a bag of heat-shrinkable plastic glued to the peripheral edges of two opposite walls of the tray;
  • means for moving the first assembly for filling the product or products to be packaged in the tray, on the plastic film or inside the bag;
  • means for bringing and pressing on the top of said tray a blank capable of completely covering the open face of the tray and at least partially wrapping said tray, to form a second assembly;
  • means for inverting said second assembly by 180 °, and for holding the products during said inversion, the products resting after inversion on the internal face of the blank covering the open face of said tray, while providing passage to the plastic film to allow its heating;
  • heating means arranged to retract the film or the bag and thus press the product or products on said internal face;
  • and means for completely closing the blank on the inverted tray and for fixing said blank to said tray by gluing.

Avantageusement les moyens pour former le premier ensemble comprennent des moyens de pliage d'un flan pour former la barquette et des moyens d'amener et de collage du film ou du sac sur les bords périphériques de la barquette ainsi formée.Advantageously, the means for forming the first assembly comprise means for folding a blank to form the tray and means for bringing and bonding the film or the bag to the peripheral edges of the tray thus formed.

Dans un mode de réalisation avantageux, les moyens pour former le premier ensemble comprennent des moyens de collage du film ou du sac en matière plastique sur le flan à plat destiné à former ladite barquette, puis des moyens de mise en forme de l'ensemble pour obtenir ladite barquette recouverte intérieurement du film par pliage.In an advantageous embodiment, the means for forming the first assembly comprise means for bonding the film or the plastic bag to the flat blank intended to form said tray, then means for shaping the assembly for obtain said tray internally covered with film by folding.

Egalement avantageusement, les moyens de collage du film ou du sac sur la barquette sont agencés pour coller ledit film ou ledit sac sur les bords périphériques internes de deux parois opposées de la barquette.Also advantageously, the means for bonding the film or the bag to the tray are arranged to glue said film or said bag to the internal peripheral edges of two opposite walls of the tray.

Dans un autre mode de réalisation avantageux, les moyens de collage du film ou du sac sur la barquette sont agencés pour coller ledit film ou ledit sac sur les bords périphériques externes de deux parois opposées de la barquette.In another advantageous embodiment, the means for bonding the film or the bag to the tray are arranged to adhere said film or said bag to the outer peripheral edges of two opposite walls of the tray.

L'invention sera mieux comprise à la lecture de la description qui suit de modes particuliers de réalisation, donnés à titre d'exemples non limitatifs.The invention will be better understood on reading the following description of particular embodiments, given by way of nonlimiting examples.

La description se réfère aux dessins qui l'accompagnent, dans lesquels :

  • Les figures 1A et 1B montrent respectivement, en perspective, un flan à plat, et le même flan plié, puis recouvert d'un film en matière plastique pour former la barquette d'un premier mode de réalisation d'un emballage selon l'invention.
  • La figure 1B' est une vue schématique, en coupe, d'une extrémité de la barquette de la figure 1B.
  • Les figures 2A et 2B montrent respectivement, en perspective, un flan à plat avant recouvrement par un film en matière plastique, et le même flan plié pour former la barquette d'un emballage selon un deuxième mode de réalisation de l'emballage selon l'invention.
  • La figure 2B' est une vue schématique, en coupe, d'une extrémité de la barquette de la figure 2B.
  • La figure 3 est une vue en perspective d'une boîte intermédiaire selon la figure 1B ou 2B, dans laquelle ont été placés des produits, et d'un flan propre à constituer le fond d'un emballage selon un mode de réalisation de l'invention.
  • La figure 4 est une vue en perspective de l'emballage obtenu après retournement de l'ensemble barquette plus flan de la figure 3, avant fermeture des rabats du couvercle.
  • La figure 5 est une vue en perspective d'un autre mode de réalisation d'un emballage selon l'invention avant fermeture définitive, montrant la circulation du fluide caloporteur dans l'emballage, autour du film en matière plastique.
  • La figure 6 est une vue en perspective de l'emballage de la figure 5 en cours de fermeture définitive.
  • Les figures 7, 8 et 9 montrent schématiquement et respectivement les étapes successives de mise en place du film, ou sac, en matière plastique, sur le flan destiné à former la ceinture de volets et la face supérieure interne de l'emballage, selon trois modes de réalisation différents de fixation du film ou sac selon l'invention.
  • La figure 10 montre schématiquement, en coupe, l'emballage ouvert pendant l'étape de chauffage et de rétraction du film en matière plastique et l'emballage terminé, après fermeture et collage du couvercle.
  • La figure 11 montre schématiquement, en coupe, deux emballages selon l'invention avec variantes de couvercle.
  • La figure 12 montre schématiquement, en coupe, une variante d'un mode de réalisation de l'emballage selon l'invention avec un sac en matière plastique donnant les principales étapes de procédé d'emballage mis alors en oeuvre.
  • Les figures 13 et 14 montrent, en vue en plan, deux autres modes de réalisation de flan pour formation d'une barquette selon l'invention.
  • Les figures 15 et 16 montrent, en vue en plan, deux autres modes de réalisation de flan pour enveloppe selon l'invention.
  • La figure 17 est une vue latérale schématique d'une première partie d'un dispositif selon le mode de réalisation de l'invention plus particulièrement décrit ici, d'obtention de la barquette et de mise en place du film.
  • La figure 18 est une coupe selon XVIII-XVIII de la figure 17.
  • La figure 19 est une coupe selon XIX-XIX de la figure 17.
  • La figure 20 est une vue de dessus selon la flèche XX de la figure 19.
  • La figure 21 est une vue schématique à plus grande échelle d'une partie de la figure 19.
  • La figure 22 est une vue latérale schématique d'une deuxième partie du dispositif de la figure 17, montant notamment la mise en place du flan de fond, le retournement de l'emballage, et son chauffage par thermo-rétraction.
  • La figure 23 est une vue en coupe selon XXIII-XXIII de la figure 22.
  • La figure 24 est une vue en coupe selon XXIV-XXIV de la figure 22.
The description refers to the accompanying drawings, in which:
  • FIGS. 1A and 1B respectively show, in perspective, a flat blank, and the same folded blank, then covered with a plastic film to form the tray of a first embodiment of a packaging according to the invention .
  • Figure 1B 'is a schematic sectional view of one end of the tray of Figure 1B.
  • FIGS. 2A and 2B respectively show, in perspective, a flat blank before covering with a plastic film, and the same blank folded to form the tray of a packaging according to a second embodiment of the packaging according to invention.
  • Figure 2B 'is a schematic sectional view of one end of the tray of Figure 2B.
  • FIG. 3 is a perspective view of an intermediate box according to FIG. 1B or 2B, in which products have been placed, and of a blank capable of constituting the bottom of a packaging according to one embodiment of the invention.
  • Figure 4 is a perspective view of the packaging obtained after turning the assembly tray plus blank of Figure 3, before closing the lid flaps.
  • Figure 5 is a perspective view of another embodiment of a package according to the invention before final closure, showing the circulation of the heat transfer fluid in the package, around the plastic film.
  • Figure 6 is a perspective view of the packaging of Figure 5 during final closure.
  • Figures 7, 8 and 9 show schematically and respectively the successive stages of placing the film, or bag, of plastic material, on the blank intended to form the flap belt and the internal upper face of the packaging, according to three different embodiments for fixing the film or bag according to the invention.
  • FIG. 10 schematically shows, in section, the packaging opened during the heating and shrinking step of the plastic film and the packaging finished, after closing and gluing of the cover.
  • Figure 11 shows schematically, in section, two packages according to the invention with variants of the cover.
  • FIG. 12 schematically shows, in section, a variant of an embodiment of the packaging according to the invention with a plastic bag giving the main steps of the packaging process then implemented.
  • Figures 13 and 14 show, in plan view, two other embodiments of blank for forming a tray according to the invention.
  • Figures 15 and 16 show, in plan view, two other embodiments of blank for envelope according to the invention.
  • Figure 17 is a schematic side view of a first part of a device according to the embodiment of the invention more particularly described here, for obtaining the tray and positioning the film.
  • Figure 18 is a section on XVIII-XVIII of Figure 17.
  • Figure 19 is a section along XIX-XIX of Figure 17.
  • FIG. 20 is a top view along the arrow XX in FIG. 19.
  • FIG. 21 is a diagrammatic view on a larger scale of part of FIG. 19.
  • Figure 22 is a schematic side view of a second part of the device of Figure 17, including mounting the establishment of the bottom blank, the inversion of the package, and its heating by heat-shrinking.
  • Figure 23 is a sectional view along XXIII-XXIII of Figure 22.
  • Figure 24 is a sectional view along XXIV-XXIV of Figure 22.

La figure 1A montre un flan 1 en carton ondulé comprenant un volet central ajouré 2 rectangulaire, par exemple présentant quatre fenêtres identiques rectangulaires 3, réparties symétriquement, dont la somme des superficies occupe sensiblement les 9/10èmes de la surface dudit volet.FIG. 1A shows a blank 1 of corrugated cardboard comprising a perforated central rectangular panel 2, for example having four identical rectangular windows 3, symmetrically distributed, the sum of the areas of which occupies substantially 9/10 of the surface of said panel.

Le volet central 2 est muni de quatre rabats latéraux rectangulaires respectivement reliés aux quatre côtés dudit volet central par des premières lignes de pliage 4, à savoir deux premiers rabats latéraux opposés 5, chacun muni de deux rabats secondaires d'extrémité 6, rectangulaires, de même largeur que lesdits premiers rabats 5, situés dans le prolongement de ceux-ci, et reliés de part et d'autre desdits premiers rabats latéraux par des secondes lignes de pliage 7 perpendiculaires aux premières lignes de pliage des mêmes rabats, et deux seconds rabats latéraux opposés 8, démunis de rabats secondaires, de même largeur que les rabats secondaires des premiers rabats latéraux.The central flap 2 is provided with four rectangular lateral flaps respectively connected to the four sides of said central flap by first fold lines 4, namely two first opposite lateral flaps 5, each provided with two secondary end flaps 6, rectangular, of the same width as said first flaps 5, located in the extension of those -this, and connected on either side of said first lateral flaps by second fold lines 7 perpendicular to the first fold lines of the same flaps, and two second opposite lateral flaps 8, without secondary flaps, of the same width as the secondary flaps of the first lateral flaps.

La figure 1B montre un premier ensemble 9 appartenant à un emballage selon l'invention, comprenant une barquette 10 obtenue à partir du flan 1 plié, dont les rabats secondaires 6 ont été collés sur la face interne 11 des seconds rabats 8, les lignes de pliage 7 et 4 étant légèrement décalées en conséquence.FIG. 1B shows a first assembly 9 belonging to a package according to the invention, comprising a tray 10 obtained from the folded blank 1, the secondary flaps 6 of which have been glued to the internal face 11 of the second flaps 8, the lines of folding 7 and 4 being slightly offset accordingly.

Dans un autre mode de réalisation, les rabats secondaires peuvent être collés sur la face externe 12 des seconds rabats ; dans ce cas, le décalage entre lignes de pliage est dans le sens inverse.In another embodiment, the secondary flaps can be glued to the external face 12 of the second flaps; in this case, the offset between fold lines is in the opposite direction.

L'ensemble 9 comporte de plus un film en matière plastique 13, (en trait mixte 13') amené sur le dessus de la barquette 10 qui a été mise en forme.The assembly 9 further comprises a plastic film 13 (in phantom 13 ') brought on top of the tray 10 which has been shaped.

Le film 13 est de forme rectangulaire, de largeur sensiblement égale à une dimension du volet central 2, par exemple la longueur de celui-ci, et de longueur supérieure à la longueur du flan 1 obtenue par ajout de l'autre dimension du volet central et des longueurs des deux premiers volets 5.The film 13 is rectangular, of width substantially equal to a dimension of the central flap 2, for example the length thereof, and of length greater than the length of the blank 1 obtained by adding the other dimension of the central flap and lengths of the first two parts 5.

Le film est fixé sur les bords périphériques 14 des premiers rabats 5, sur la partie externe 16 des parois de la barquette ainsi formée, par des lignes de colle 17 (voir figure 1B'), le bord périphérique 18 du film étant donc à cheval sur les bords 14 des premiers rabats 5, et les deux autres bords périphériques opposés 19 du film coïncidant sensiblement avec les lignes de pliage 4 du fond de la barquette.The film is fixed on the peripheral edges 14 of the first flaps 5, on the external part 16 of the walls of the tray thus formed, by lines of glue 17 (see FIG. 1B '), the peripheral edge 18 of the film therefore being astride. on the edges 14 of the first flaps 5, and the two other opposite peripheral edges 19 of the film substantially coinciding with the fold lines 4 of the bottom of the tray.

Pour simplifier, on utilisera dans la suite de la description les mêmes numéros de référence pour désigner les mêmes éléments.For simplicity, the following reference numbers will be used in the following description to designate the same elements.

La figure 2A montre le flan 1 sur lequel on vient cette fois-ci d'abord fixer le film 13 par collage sur la face interne 20 des premiers rabats 5 le long des bords périphériques 14 (ligne de colle 21) desdits premiers rabats, avant pliage, pour obtenir, après pliage, l'ensemble 9 avec film collé intérieurement comme montré sur les figures 2B et 2B'.FIG. 2A shows the blank 1 on which this time comes first of all fixing the film 13 by gluing on the internal face 20 of the first flaps 5 along the peripheral edges 14 (glue line 21) of said first flaps, before folding, to obtain, after folding, the assembly 9 with film glued internally as shown in Figures 2B and 2B '.

La figure 3 montre l'ensemble 9 (barquette 10 + film 13) dans lequel ont été placés des produits 22 de formes différentes, sur lequel on vient plaquer une feuille en carton ondulé 23 destinée à former le fond de l'emballage après retournement (voir figure 4).FIG. 3 shows the assembly 9 (tray 10 + film 13) in which products 22 of different shapes have been placed, on which a sheet of corrugated cardboard 23 is placed to form the bottom of the packaging after turning over ( see figure 4).

Plus précisément la feuille 23 est constituée par un flan comprenant un volet principal 24 rectangulaire, propre à former le fond de l'emballage, muni de deux rabats latéraux d'extrémité identiques 25, opposés dans le sens transversal du flan, rectangulaires, ou trapézoïdaux de petite base dirigée vers l'extérieur, reliés par des lignes de pliage 26 audit volet principal, la distance entre les lignes de pliage 26 étant agencée pour permettre le recouvrement de la face ouverte 27 de la barquette 10 en tenant compte des épaisseurs cumulées des rabats 8.More precisely, the sheet 23 is constituted by a blank comprising a rectangular main flap 24, suitable for forming the bottom of the packaging, provided with two identical end side flaps 25, opposite in the transverse direction of the blank, rectangular or trapezoidal. of small base directed outwards, connected by lines of folding 26 to said main flap, the distance between the folding lines 26 being arranged to allow the open face 27 of the tray 10 to be covered, taking account of the cumulative thicknesses of the flaps 8.

Le flan comprend également deux séries 28 et 29 de volets rectangulaires de dimension transversale identique ou un peu inférieure à celle du volet principal 24, situés de part et d'autre du volet principal 24 reliés les uns aux autres par des lignes de pliage parallèles 30.The blank also comprises two series 28 and 29 of rectangular flaps of transverse dimension identical or slightly less than that of the main flap 24, located on either side of the main flap 24 connected to each other by parallel fold lines 30 .

Chaque série comprend un premier volet enveloppant 31, rectangulaire, de recouvrement d'une paroi 32 de la barquette sur laquelle est fixé le film en matière plastique thermo-rétractable 13 et un deuxième volet enveloppant 33, propre à être rabattu sur la face externe du fond de la barquette.Each series comprises a first enveloping shutter 31, rectangular, covering a wall 32 of the tray on which is fixed the film of heat-shrinkable plastic 13 and a second wrapping shutter 33, suitable for being folded down on the external face of the bottom of the tray.

On a représenté sur la figure 3 en trait mixte, les mêmes éléments étant référencés avec les mêmes numéros indicés, le flan 23' avec ses rabats 33' appliqué et en partie replié sur la barquette avant retournement.There is shown in Figure 3 in phantom, the same elements being referenced with the same indicative numbers, the blank 23 'with its flaps 33' applied and partially folded over the tray before turning.

La figure 4 montre l'ensemble 34 obtenu après collage d'une part des rabats latéraux d'extrémité 25 sur les seconds rabats 8, et d'autre part des premiers volets enveloppant 31 sur la face externe des parois 32 et retournement, les deuxièmes volets enveloppants 33 restant ouverts pour laisser, via les fenêtres 3 du fond de la barquette, l'accès au fluide caloporteur vers le film thermo-rétractable.FIG. 4 shows the assembly 34 obtained after gluing on the one hand of the lateral end flaps 25 on the second flaps 8, and on the other hand of the first enveloping flaps 31 on the external face of the walls 32 and turning over, the second enveloping flaps 33 remaining open to allow, via the windows 3 at the bottom of the tray, access to the heat transfer fluid towards the heat-shrinkable film.

La figure 5 montre une variante 35 de l'ensemble de la figure 4, dans lequel la longueur des seconds rabats latéraux opposés 8 dénués de rabat secondaire, est plus petite que celle des deux premiers rabats latéraux 5 et de leurs rabats secondaires d'extrémité 6 ce qui laisse un passage 36 pour circulation d'un fluide caloporteur (flèche 37) au dessus de la face interne 38 du volet principal 24, avant fermeture et collage des rabats latéraux d'extrémité 25.FIG. 5 shows a variant 35 of the assembly of FIG. 4, in which the length of the second opposite lateral flaps 8 devoid of secondary flap, is smaller than that of the first two lateral flaps 5 and of their secondary end flaps 6 which leaves a passage 36 for circulation of a heat-transfer fluid (arrow 37) above the internal face 38 of the main flap 24, before closing and gluing the side end flaps 25.

La figure 6 montre le mode de réalisation de l'emballage selon l'invention plus particulièrement décrit ici au moment de sa fermeture complète, après thermo-rétraction du film plastique 13 sur les produits 22.FIG. 6 shows the embodiment of the packaging according to the invention more particularly described here at the time of its complete closure, after heat-shrinking of the plastic film 13 on the products 22.

Les seconds volets 33, préalablement encollés par des lignes de colle 39, par exemple de colle dite "hot melt" ou de colle à froid, continues ou interrompues, 39 sur leur parties d'extrémité périphériques internes respectives, sont plaqués sur la face externe du volet central 2, ajouré, qui comprend en face de lignes de colle, une partie non ajourée 40 pour coopérer avec lesdites parties d'extrémité encollées.The second flaps 33, previously glued with lines of glue 39, for example of glue called "hot melt" or cold glue, continuous or interrupted, 39 on their respective internal peripheral end parts, are pressed on the external face of the central flap 2, perforated, which comprises opposite lines of glue, a non-perforated part 40 to cooperate with said glued end parts.

Les bords 41 des parties d'extrémité des deux volets 33 sont par exemple jointifs une fois lesdits volets rabattus sur le fond 2, ce qui donne un aspect fini et assure une bonne solidité et intégrité à l'emballage obtenu.The edges 41 of the end parts of the two flaps 33 are for example contiguous once said flaps folded over the bottom 2, which gives a finished appearance and ensures good solidity and integrity of the packaging obtained.

On a représenté sur les figures 7, 8 et 9, trois types de fabrication du premier ensemble formé par la barquette et le film, ou sac, en matière plastique selon l'invention.There are shown in Figures 7, 8 and 9, three types of manufacture of the first assembly formed by the tray and the film, or bag, plastic material according to the invention.

La figure 7 montre une première étape 42 d'amener du flan 1, une deuxième étape 43 de formation de la barquette 10 et d'amener du film 13 ou du sac 44 au dessus de ladite barquette, et une troisième étape 45 de collage du film 13 sur la barquette dont les faces externes 16 de deux parois ont été encollées au préalable.FIG. 7 shows a first step 42 of bringing in the blank 1, a second step 43 of forming the tray 10 and of bringing film 13 or the bag 44 above said tray, and a third step 45 for bonding the film 13 to the tray, the external faces 16 of two walls of which have been glued beforehand.

Le procédé de la figure 7 correspond à celui décrit en référence aux lignes 1A, 1B et 1B'.The process of FIG. 7 corresponds to that described with reference to lines 1A, 1B and 1B '.

La figure 8 correspond quant à elle au procédé évoqué en référence aux figures 2A, 2B et 2B'.Figure 8 corresponds to the process mentioned with reference to Figures 2A, 2B and 2B '.

Il comprend une première étape 46 d'amener du film 13 ou du sac 44 sur le flan à plat 1, le film étant sensiblement de même largeur que le flan, une deuxième étape 47 de collage du film sur ledit flan à plat dont les bords périphériques internes 14 ont été préalablement encollés, puis une troisième étape 48 de formation de la barquette, le film épousant alors les faces internes de ladite barquette pour donner le premier ensemble 9.It comprises a first step 46 of bringing film 13 or bag 44 onto the flat blank 1, the film being substantially the same width as the blank, a second step 47 of bonding the film to said flat blank whose edges internal peripherals 14 were previously glued, then a third step 48 of forming the tray, the film then marrying the internal faces of said tray to give the first set 9.

La figure 9 montre quant à elle un mode de réalisation du procédé combinant le collage sur les bords internes et externes des premiers rabats 5.FIG. 9 shows an embodiment of the method combining bonding on the internal and external edges of the first flaps 5.

La première étape 49 est identique à l'étape 46. Puis, après encollage des bords périphériques internes et externes du flan, on plaque (étape 50) le film 13 de plus grande largeur que le flan sur ce dernier, puis on rabat les extrémités 51 du film autour des bords, et on érige la barquette (étape 52) pour obtenir un ensemble avec double collage, interne et externe, du film sur les bords périphériques 14 des premiers rabats 5.The first step 49 is identical to step 46. Then, after gluing of the internal and external peripheral edges of the blank, the film 13 is wider (step 50) than the blank on the latter, then the ends are folded down 51 of the film around the edges, and the tray is erected (step 52) to obtain an assembly with double bonding, internal and external, of the film on the peripheral edges 14 of the first flaps 5.

On a représenté sur la figure 10 les deux dernières étapes du procédé selon l'invention plus particulièrement décrit ici, à savoir l'étape 52 de chauffage par fluide caloporteur 53, par exemple soufflé par le dessus, et aspiré en 54 par les côtés, puis par le dessous de l'emballage, et l'étape 55 de fermeture des rabats 33 et collage sur une languette centrale 56 du fond ajouré de la barquette.FIG. 10 shows the last two steps of the method according to the invention more particularly described here, namely step 52 of heating by heat transfer fluid 53, for example blown from above, and drawn in at 54 from the sides, then from the bottom of the packaging, and step 55 of closing the flaps 33 and gluing on a central tongue 56 of the perforated bottom of the tray.

La figure 11 montre en coupe schématiquement deux emballages selon l'invention avec variante de couvercle, à savoir un emballage 57 avec deux volets d'extrémité rectangulaire 58 de même largeur, dont les bords 59 sont jointifs, au centre de l'emballage, lorsqu'ils sont collés sur la languette centrale 60, séparant les ouvertures du fond ajouré 61, et un emballage 62 comprenant un petit volet 63 d'extrémité de faible largeur, par exemple égale au dixième de la largeur totale de l'emballage, et un grand volet 64 recouvrant sensiblement la totalité du fond 65 de la barquette retournée.FIG. 11 schematically shows in section two packages according to the invention with variant cover, namely a package 57 with two rectangular end flaps 58 of the same width, the edges 59 of which are joined, in the center of the package, when '' they are glued to the central tab 60, separating the openings from the perforated bottom 61, and a package 62 comprising a small end flap 63 of small width, for example equal to one tenth of the total width of the package, and a large flap 64 substantially covering the entire bottom 65 of the inverted tray.

Sur la figure 12, on a représenté schématiquement les étapes de fabrication d'un emballage selon l'invention avec un sac ou sachet 66. Le sac 66 est par exemple collé sur la barquette préformée 67 à fond ajouré, sur le bord externe de deux parois verticales 68 en vis à vis de la barquette. Puis le sac 66 est ouvert par les côtés 69, et rempli de produits 70.In Figure 12, there is shown schematically the stages of manufacturing a package according to the invention with a bag or bag 66. The bag 66 is for example glued to the preformed tray 67 with perforated bottom, on the outer edge of two vertical walls 68 facing the tray. Then the bag 66 is opened by the sides 69, and filled with products 70.

Le couvercle 71 est alors mis en place pour fermer le deuxième ensemble, qui est retourné, puis le sac est rétracté par la chaleur sur les produits avant fermeture des rabats 72.The cover 71 is then put in place to close the second set, which is turned over, then the bag is shrunk by heat on the products before the flaps 72 are closed.

La figure 13 montre un flan 73 pour constitution d'une barquette pour emballage selon l'invention. Le fond 74 est ajouré par une série de rangs 75 de fenêtres longitudinales 76, par exemple sept rangs de deux fenêtres rectangulaires chacun, à savoir une petite fenêtre et une grande fenêtre disposées en quinconce d'un rang à l'autre.FIG. 13 shows a blank 73 for constituting a tray for packaging according to the invention. The bottom 74 is perforated by a series of rows 75 of longitudinal windows 76, for example seven rows of two rectangular windows each, namely a small window and a large window staggered from row to row.

Les seconds rabats 77 dénués de rabats secondaires du flan comprennent une échancrure 78 par exemple rectangulaire, centrée, sur le bord périphérique dudit rabat, qui va permettre une circulation du fluide caloporteur lors du chauffage, le long du film en matière plastique.The second flaps 77 devoid of secondary flaps of the blank comprise a notch 78, for example rectangular, centered, on the peripheral edge of said flap, which will allow circulation of the heat transfer fluid during heating, along the plastic film.

La figure 14 montre un autre flan 79 pour barquette selon l'invention avec une ouverture centrale 80 occupant les 8/10èmes de la surface du volet central 81.FIG. 14 shows another blank 79 for a tray according to the invention with a central opening 80 occupying 8/10 of the surface of the central flap 81.

Les figures 15 et 16 montrent respectivement deux flans 82 et 83 pour formation du fond de l'emballage selon l'invention, à savoir un flan 82 muni d'un rabat d'extrémité 84 propre à recouvrir en totalité le fond de la barquette retournée, et un flan 83 muni d'un rabat d'extrémité 85 dans le prolongement du rabats 86 propre à recouvrir en totalité le fond de la barquette, agencé pour venir recouvrir une paroi verticale de ladite barquette et dont le bord 87 vient coopérer jointivement ou sensiblement jointivement avec le bord 88 du rabat 89 situé sur le côté opposé du volet central 90 du flan 83, par rapport audit volet central 90.FIGS. 15 and 16 respectively show two blanks 82 and 83 for forming the bottom of the package according to the invention, namely a blank 82 provided with an end flap 84 suitable for completely covering the bottom of the inverted tray , and a blank 83 provided with an end flap 85 in the extension of the flaps 86 suitable for completely covering the bottom of the tray, arranged to come to cover a vertical wall of said tray and whose edge 87 comes to cooperate joined or substantially contiguously with the edge 88 of the flap 89 located on the opposite side of the central flap 90 of the blank 83, relative to said central flap 90.

Nous allons maintenant décrire un dispositif d'emballage d'au moins un produit de forme spécifique selon l'invention en référence aux figures 17 à 22.We will now describe a device for packaging at least one product of specific shape according to the invention with reference to FIGS. 17 to 22.

La figure 17 montre des moyens 91 pour former un premier ensemble 92 comprenant une barquette en carton ondulé 93 et un film en matière plastique thermo-rétractable 94 (en trait mixte sur la figure).FIG. 17 shows means 91 for forming a first assembly 92 comprising a corrugated cardboard tray 93 and a film of heat-shrinkable plastic 94 (in phantom in the figure).

Plus précisément ces moyens 91 comprennent un dispositif 95 de stockage vertical et de dépilage de flans 96 propres à former ladite barquette, connu en lui-même.More precisely, these means 91 comprise a device 95 for vertical storage and unstacking of blanks 96 capable of forming said tray, known in itself.

Les flans 96 sont déposés un par un sur un tapis roulant 97 qui déplace le flan transversalement pour l'amener en dessous d'une machine 98 propre à poinçonner, en faisant descendre un piston 99 de forme complémentaire à celle du volume interne de la barquette, ledit flan vers une position 100 après guidage à l'intérieur d'un puits de mise en forme 101, de façon à obtenir la barquette formée 93.The blanks 96 are deposited one by one on a conveyor belt 97 which moves the blank transversely to bring it below a machine 98 suitable for punching, by lowering a piston 99 of a shape complementary to that of the internal volume of the tray , said blank towards a position 100 after guiding inside a shaping well 101, so as to obtain the formed tray 93.

Des moyens d'encollage 102 connus en eux-mêmes ont permis au préalable l'encollage des rabats du flan de façon à ce que les rabats de la barquette puissent être collés les uns sur les autres comme décrit ci-avant.Sizing means 102 known in themselves have previously made it possible to glue the flaps of the blank so that the flaps of the tray can be glued to one another as described above.

La barquette 93 est ensuite emmenée au moyen d'un tapis roulant 103 (en trait mixte sur la figure 17) dans une position de mise en place du film en matière plastique.The tray 93 is then brought by means of a conveyor belt 103 (in phantom in Figure 17) to a position for placing the plastic film.

Lors du transfert en 104, des injecteurs de colle, par exemple toujours du type connue sous la dénomination anglo-saxonne "hot melt", appliquent le ou les cordons de colle nécessaires à la fixation ultérieure du film plastique sur les bords externes de la barquette, de façon connue en elle même.When transferring to 104, glue injectors, for example always of the type known by the Anglo-Saxon name "hot melt", apply the glue bead (s) necessary for the subsequent fixing of the plastic film on the outer edges of the tray , in a manner known per se.

Le film est alors mis en place de façon à former un ensemble 92 du type de celui montré sur la figure 1B.The film is then placed so as to form an assembly 92 of the type shown in FIG. 1B.

L'ensemble 92 est ensuite repris par exemple par un tapis roulant vers des moyens 105 agencés pour amener et pour placer les produits à emballer dans ladite barquette, de façon connue en elle-même.The assembly 92 is then taken up for example by a conveyor belt towards means 105 arranged for bring and to place the products to be packaged in said tray, in a manner known per se.

On va maintenant décrire plus précisément en référence à la figure 18 la machine 98 de formation de la barquette 93.We will now describe more precisely with reference to FIG. 18 the machine 98 for forming the tray 93.

La machine comporte un châssis 106, un piston 99, des moyens de guidage du piston 107 et des moyens de déplacement verticaux 108 du piston, par exemple hydraulique.The machine comprises a chassis 106, a piston 99, means for guiding the piston 107 and means for vertical displacement 108 of the piston, for example hydraulic.

La tête du piston est de forme complémentaire à celle du volume interne de la barquette ; il est propre à venir appuyer sur le flan 96, pour le mettre progressivement en forme via un entonnoir de guidage externe 110 présentant une partie haute de forme trapézoïdale, appartenant au puits 101, pour obtenir la barquette 93, qui peut ensuite être reprise par le tapis 103.The head of the piston has a shape complementary to that of the internal volume of the tray; it is suitable for pressing on the blank 96, in order to gradually shape it via an external guide funnel 110 having a trapezoidal upper part, belonging to the well 101, in order to obtain the tray 93, which can then be taken up by the carpet 103.

Sur la figure 19, on a représenté le dispositif de mise en place du film plastique 94 qui est déroulé à partir d'une bobine 111 via un système de déplacement à rouleaux motorisés successifs 112, servant également à la mise en tension du film plastique au dessus de la barquette à équiper.In Figure 19, there is shown the device for placing the plastic film 94 which is unwound from a reel 111 via a displacement system with successive motorized rollers 112, also used for tensioning the plastic film at above the tray to be fitted.

Pour ce faire, il est prévu des moyens 113 de déplacements verticaux du film et d'application dudit film sur la paroi interne de la barquette, moyens permettant par ailleurs de coller les extrémités 114 du film sur les périphéries externes 115 de la barquette, périphéries qui ont été au préalable encollées.To do this, means 113 are provided for vertical displacements of the film and for applying said film to the internal wall of the tray, means moreover making it possible to bond the ends 114 of the film to the external peripheries 115 of the tray, peripheries which have been previously glued.

Des moyens 116 qui vont être plus particulièrement décrits en référence à la figure 21 permettent par ailleurs la mise en place de cette pellicule de façon à ce qu'elle épouse le fond de la barquette 115.Means 116 which will be more particularly described with reference to FIG. 21 allow by elsewhere, the positioning of this film so that it matches the bottom of the tray 115.

Celle-ci est ensuite reprise par un tapis roulant comme indiqué sur la figure 17.This is then taken up by a treadmill as shown in Figure 17.

La figure 20 montre en vue de dessus selon la flèche XX le dessus du film plastique 94 lorsqu'il va être appliqué sur la barquette dont le fond apparaît en transparence en 118.FIG. 20 shows a top view along arrow XX of the top of the plastic film 94 when it is going to be applied to the tray, the bottom of which appears in transparency at 118.

Plus précisément en référence aux figures 19 et 20, une broche ou barre de préhension 119, par exemple par pincement de l'extrémité du film à dérouler sur la largeur de ce dernier, coulisse horizontalement entre une position 119' (en trait interrompu sur la figure 20) où elle vient chercher l'extrémité du film, et une position 119" où le film est déroulé au dessus de la barquette. Une barre fixe supporte par en-dessous le film ainsi déroulé, des moyens 120' de découpe permettant de couper le film à la longueur voulue.More specifically with reference to FIGS. 19 and 20, a pin or gripping bar 119, for example by pinching the end of the film to be unrolled over the width of the latter, slides horizontally between a position 119 '(in broken lines on the FIG. 20) where it comes to seek the end of the film, and a position 119 "where the film is unrolled above the tray. A fixed bar supports from below the film thus unrolled, cutting means 120 ′ allowing cut the film to the desired length.

Des moyens escamotables sont prévus, comprenant deux tiges parallèles 122 horizontales s'étendant au droit des parois verticales de la barquette entre une position où le film repose sur les tiges, et une position (non représentée sur les figures) où les tiges sont escamotées pour libérer entièrement l'espace entre le film et la barquette.Retractable means are provided, comprising two parallel horizontal rods 122 extending in line with the vertical walls of the tray between a position where the film rests on the rods, and a position (not shown in the figures) where the rods are retracted for completely free the space between the film and the tray.

Chaque tige comporte un bras plat 121, articulé en rotation autour d'une tige correspondante, agencée pour exercer une contre-pression à l'intérieur de la barquette, le film étant appliqué extérieurement en vis à vis sur les bords supérieurs des parois de la barquette via des moyens pousseurs 123, également articulés et escamotables.Each rod has a flat arm 121, articulated in rotation around a corresponding rod, arranged to exert a back pressure inside the tray, the film being applied externally opposite to the upper edges of the walls of the tray via pushing means 123, also articulated and retractable.

Une fois que le collage de la périphérie externe de l'extrémité 114 du film sur la paroi 115 de la barquette est effectué, les bras plats applicateurs 121 s'effacent et le film plastique est enfoncé par l'intermédiaire des moyens pousseurs 116 montrés sur la figure 19, connus en eux-mêmes, comprenant des vérins pousseurs terminés par des patins pousseurs 125.Once the outer periphery of the end 114 of the film has been bonded to the wall 115 of the tray, the flat applicator arms 121 are erased and the plastic film is pushed in via the pushing means 116 shown on FIG. 19, known in themselves, comprising pusher cylinders terminated by pusher pads 125.

On a représenté sur la figure 22 la deuxième partie 126 du dispositif selon l'invention permettant d'obtenir un emballage optimisé.There is shown in Figure 22 the second part 126 of the device according to the invention for obtaining an optimized packaging.

Le premier ensemble 92 obtenu dans la première partie du dispositif, et dans lequel ont été mis les paquets 127, est amené par tapis roulant 128, via un poste d'encollage externe des volets 129, jusqu'à un dispositif 130 de mise en place de l'enveloppe supérieure 132 soutenue, sur ses bords périphériques perpendiculaires au sens d'avancement du tapis 128, par des rails latéraux 131.The first assembly 92 obtained in the first part of the device, and in which the packages 127 have been placed, is brought by conveyor belt 128, via an external gluing station for the flaps 129, to a device 130 for positioning of the upper casing 132 supported, on its peripheral edges perpendicular to the direction of advance of the belt 128, by lateral rails 131.

Ce dispositif 130 comporte un plateau élévateur 133 qui amène la barquette, avec prise au passage de l'enveloppe 132, dans une position supérieure 134. L'ensemble est ensuite poussé de façon connue en elle-même par un moyen pousseur de type vérin hydraulique 135 sur le dispositif de retournement 136 qui comporte une première bielle 137 actionnée par un moteur 138,et une seconde bielle 137', l'extrémité supérieure des deux bielles étant fixée de part et d'autre du diamètre d'un disque 137'' solidaire en rotation des moyens support de l'emballage lors de son retournement, le système de bielles permettant un mouvement d'aller et retour entraînant la rotation de 180° de l'ensemble.This device 130 comprises a lifting plate 133 which brings the tray, with grip to the passage of the envelope 132, in an upper position 134. The assembly is then pushed in a manner known in itself by a pushing means of the hydraulic jack type 135 on the turning device 136 which comprises a first connecting rod 137 actuated by a motor 138, and a second connecting rod 137 ', the upper end of the two connecting rods being fixed on either side of the diameter of a disc 137'' integral in rotation with the support means of the packaging during its inversion, the system of connecting rods allowing a back and forth movement causing the rotation of 180 ° of the assembly.

Le dispositif 136 comporte des moyens connus en eux-mêmes permettant de soutenir les produits 127 par en-dessous, par exemple au travers des ouvertures de la paroi ajourée 139 de la barquette, des moyens de maintien 140 et des moyens 141 permettant ensuite l'évacuation sur un tapis roulant 142 après retournement.The device 136 comprises means known in themselves making it possible to support the products 127 from below, for example through the openings in the perforated wall 139 of the tray, holding means 140 and means 141 then allowing the evacuation on a conveyor belt 142 after turning over.

Une fois l'emballage retourné celui-ci se retrouve avec les rabats supérieurs 143 en partie haute, la face ajourée étant accessible par un fluide caloporteur (flèche 144) qui permet de rétracter le film plastique.Once the packaging is turned over, it is found with the upper flaps 143 in the upper part, the perforated face being accessible by a heat transfer fluid (arrow 144) which makes it possible to retract the plastic film.

Les moyens de chauffage mis en oeuvre sont connus en eux-mêmes et comprennent par exemple un dispositif de soufflage d'air chaud.The heating means used are known in themselves and include, for example, a device for blowing hot air.

Des moyens aspirateurs 145 (caissons de support mis au vide par exemple) sont également avantageusement prévus pour évacuer le fluide caloporteur.Vacuum means 145 (support casings evacuated for example) are also advantageously provided for removing the heat transfer fluid.

L'ensemble de l'emballage est ensuite dirigé via le tapis roulant 142 vers des moyens applicateurs (non représentés) pour la mise en pression des couvercles 143 sur le dessus de l'emballage maintenant constitué par le fond ajouré de la barquette retournée 139, des moyens encolleurs (non représentés) ayant entre-temps interposé les filets de colle nécessaires, avant la mise en pression.The entire package is then directed via the conveyor belt 142 to applicator means (not shown) for pressurizing the covers 143 on the top of the package now formed by the perforated bottom of the inverted tray 139, gluing means (not shown) having meanwhile interposed the necessary adhesive threads, before pressurization.

L'emballage est ensuite évacué de façon connue en elle-même.The packaging is then disposed of in a manner known per se.

Les figures 23 et 24 donnent des détails de réalisation du dispositif 130 de mise en place de l'enveloppe.Figures 23 and 24 give details of embodiment of the device 130 for placing the envelope.

Le dispositif 130 comprend des moyens 150 de stockage horizontal et de dépilage du flan d'enveloppe 132.The device 130 comprises means 150 for horizontal storage and unstacking of the envelope blank 132.

Le flan est repris par en-dessous via un tapis roulant 151, amené au-dessus de la barquette 93, sous un entonnoir renversé 152 dont la partie inférieure permet de guider l'enveloppe lors de son repliement autour de la barquette, et dont la partie supérieure est un canal parallélépipédique de dimensions internes correspondant aux dimensions externes de la barquette recouverte de l'enveloppe avec lesquels elle coopère à frottement.The blank is taken up from below via a conveyor belt 151, brought above the tray 93, under an inverted funnel 152, the lower part of which allows the envelope to be guided during its folding around the tray, and the upper part is a parallelepiped channel of internal dimensions corresponding to the external dimensions of the tray covered with the envelope with which it cooperates in friction.

La barquette est ensuite déplacée vers le haut et entraîne de ce fait l'enveloppe 132 qui vient coiffer et envelopper ladite barquette dont les parois, en position terminale sont situées au dessus du bord supérieur de ladite partie supérieure de l'entonnoir.The tray is then moved upward and thereby causes the casing 132 which comes to cap and wrap said tray whose walls, in the end position are located above the upper edge of said upper part of the funnel.

Des patins 153 de mise en pression des rabats latéraux de l'enveloppe sur les rabats latéraux formant les parois de la barquette sont par ailleurs prévus et complètent le collage.Pads 153 for pressurizing the lateral flaps of the envelope on the lateral flaps forming the walls of the tray are also provided and complete the bonding.

La figure 24 montre schématiquement une vue du dispositif 136 de retournement.FIG. 24 schematically shows a view of the turning device 136.

Des moyens 154 de maintien des produits par en-dessous par exemple comprenant des pistons 155 escamotables propres à venir au travers des fenêtres 156 du fond ajouré de la barquette sont prévus.Means 154 for holding the products from below, for example comprising retractable pistons 155 adapted to come through windows 156 of the perforated bottom of the tray are provided.

Claims (29)

  1. Composite packaging intended to contain at least one product (22) of unspecified shape not occupying the whole of the volume available in the packaging, comprising an intermediate box (10) of transverse polygonal cross-section made of cardboard or corrugated cardboard material in sheet form, the said packaging comprising a girdle, a bottom and a heat-shrinkable plastic sheet (13) or bag, fixed to the said intermediate box by an adhesive, for holding the product or products against the said bottom of the packaging by thermal constriction, the said intermediate box being at least partly enveloped by a sheet (23) fixed to the said intermediate box by an adhesive,
    characterised in that the intermediate box is in the shape of an inverted tray (10) whose walls form at least a part of the said girdle and whose bottom located on the side of the top of the packaging has openings, the film or bag being fixed to the peripheral edges (14) of two opposite walls of the said tray, and the said sheet forming the said bottom of the packaging.
  2. Packaging according to Claim 1, characterised in that the bottom (2) of the tray (10) has openings over an area of size greater than half the area of the said bottom.
  3. Packaging according to either of the preceding claims, characterised in that the plastic sheet (13) or bag (44, 66) is fixed to the inner peripheral edge of two opposite walls of the tray.
  4. Packaging according to any one of the preceding claims, characterised in that the plastic sheet or bag is fixed to the outer peripheral edge of two opposite walls of the tray.
  5. Packaging according to any one of the preceding claims, characterised in that the inverted tray is obtained by folding a blank (1) comprising a rectangular central panel (2) forming the bottom of the said tray, the said central panel being provided with four lateral rectangular flaps connected respectively to the four sides of the said central panel by folding lines (4) and forming the walls of the tray, namely two first opposite lateral flaps (5), each provided with two secondary end flaps (6) connected on both sides by folding lines (7) to the said corresponding first lateral flap, and two second opposite lateral flaps (8) devoid of secondary flaps, the said secondary end flaps each being fixed by an adhesive to the said adjacent second lateral flap.
  6. Packaging according to Claim 5, characterised in that the width of the two second opposite lateral flaps (8) devoid of a secondary flap, is smaller than that of the two first lateral flaps.
  7. Packaging according to any one of the preceding claims, characterised in that the sheet forming the bottom of the packaging is obtained from a blank (23, 82, 83) comprising a set of rectangular panels connected to each other by parallel folding lines (30), namely a principal rectangular panel (24, 90) forming the bottom of the packaging, provided with two lateral end flaps (25) connected by folding lines (26) to two opposite sides of the said principal panel and fixed using adhesive to the corresponding lateral flaps of the blank forming the walls of the tray, and two sets (28, 29) of enveloping panels connected to the said principal panel on its other two sides, each set comprising at least one first rectangular enveloping panel (31) covering another wall of the said tray.
  8. Packaging according to Claim 7, characterised in that each of the said sets comprises a second enveloping end panel (33) pushed down on to the external upper face of the intermediate box by folding to form the lid of the packaging.
  9. Packaging according to Claim 7, characterised in that one of the said sets of enveloping panels has a single panel (89) and the other has at least two of them.
  10. Packaging according to Claim 9, characterised in that the other set has three panels (85, 86).
  11. Packaging according to any one of Claims 7 to 10, characterised in that the width of an enveloping panel or the sum of the respective widths of the two end enveloping panels is equal to or substantially equal to the width of the central panel of the tray to which the said end enveloping panel or panels are stuck to form the lid of the packaging.
  12. Assembly of blanks for the fabrication of a composite packaging intended to contain at least one product of unspecified shape not occupying the whole of the volume available in the packaging having, in combination
    - a first blank (1) comprising a central rectangular panel (2) suitable for forming the bottom of a tray, the said central panel (2) being provided with four lateral flaps connected respectively to the four sides of the said panel by folding lines, suitable for forming the walls of the tray, namely two first opposite lateral flaps (5) each provided with two secondary end flaps (6) connected on both sides by folding lines (7) to the said corresponding first lateral flap, and two second opposite lateral flaps (8) devoid of a secondary flap,
    - a second blank (23) comprising a set of rectangular panels connected to each other by parallel folding lines, namely a principal rectangular panel (24) provided with two lateral end flaps (25) connected by folding lines (26) to two opposite sides of the said principal panel and suitable for being fixed by an adhesive to the corresponding lateral flaps of the blank forming the walls of the tray,
       characterised in that the central panel (2) of the first blank has openings,
       in that the second blank (23), whose principal panel is suitable for forming the bottom of the packaging, comprises two sets (28, 29) of enveloping panels connected to the said principal panel on its other two sides, each set comprising at least one first rectangular enveloping panel (31) covering another wall of the said tray during the formation of the packaging,
       and in that each of the said sets of enveloping panels comprises a second enveloping panel (33), at the end, suitable for being pressed down on to the external upper face of the tray by folding, to form at least partly the lid of the packaging.
  13. Assembly according to Claim 12, characterised in that one of the said sets of enveloping panels has a single panel (89) and the other set has at least two of them.
  14. Assembly according to Claim 13, characterised in that the other set has three panels.
  15. Assembly according to any one of Claims 12 to 14, characterised in that the width of an enveloping panel or the sum of the respective widths of the two enveloping end panels is equal or substantially equal to the width of the central panel of the tray on which the said enveloping end panel or panels are arranged in order to be stuck to form the lid of the packaging.
  16. Assembly according to any one of Claims 12 to 15, characterised in that the width of the two second opposite lateral flaps devoid of a secondary flap is smaller than that of the two first lateral flaps.
  17. Method of packaging at least one product (22, 127) of unspecified shape not occupying the whole of the volume available in the packaging, characterised in that
    - a first assembly (9, 92) is formed comprising:
    . a tray (10, 93) made of cardboard or corrugated cardboard,
    . and a sheet (13, 94) or bag (44) made of heat-shrinkable plastic stuck to the peripheral edges of two opposite walls of the tray,
    - the product or products (22, 127) to be packaged are placed in the tray, on the plastic film or inside the bag,
    - a blank (23, 132) suitable for covering the open face of the tray completely and for enveloping at least part of the said tray is pressed flat against the top of the said tray so as to form a second assembly,
    - the said second assembly is turned upside-down through 180°, keeping the products in place, the products, after being inverted, resting on the inner face of the blank covering the open face of the said tray, while forming a passage towards the plastic film in order to permit its heating,
    - heating is carried out in order to shrink the film or the bag and to press the product or products flat against the said inner face,
    - the blank is then completely closed up over the inverted tray, to which it is fixed using an adhesive.
  18. Method according to Claim 17, characterised in that, in order to form the first assembly, the tray (10, 93) is first produced by folding a blank, and then sticking the film or bag on to the peripheral edges of the tray.
  19. Method according to Claim 18, characterised in that, in order to form the first assembly, the plastic film or bag is first stuck on to the flattened blank intended to form the said tray and the said tray is then formed by folding.
  20. Method according to any one of Claims 17 to 19, characterised in that the tray and its contents are enveloped at the top with a blank comprising a set of rectangular panels connected to each other by parallel folding lines, without completely folding down the said blank around the tray, the said rectangular panels comprising:
    - a principal rectangular panel (24) pressed flat against the open face of the tray, provided with two lateral end flaps (25) connected by folding lines (26) to two opposite sides of the said principal panel, which is fixed using an adhesive to the walls of the tray,
    - and two sets (28, 29) of enveloping panels connected to the said principal panel on its other two sides, each set comprising at least one first rectangular enveloping panel (31) for covering another wall of the said tray and a set comprising at least one second panel (84, 86) for completely covering the bottom of the packaging, second panels which are left open before and during the heating.
  21. Method according to any one of Claims 17 to 20, characterised in that the tray is obtained by folding a blank comprising a central rectangular panel forming the bottom of the said tray, and lateral flaps forming the walls of the tray, the said lateral flaps being fixed between them using an adhesive via secondary flaps.
  22. Method according to any one of Claims 17 to 21, characterised in that, the bottom (2) of the inverted tray having openings, and a space (36) being structurally made between the inner face (38) of the blank and the outer peripheral edge of at least one wall of the tray, heating is carried out by circulating a heat-conducting fluid over the plastic film or bag via the openings in the bottom and the said space.
  23. Method according to any one of Claims 17 to 22, characterised in that the plastic sheet or bag is fixed to the inner peripheral edge of two opposite walls of the tray.
  24. Method according to any one of Claims 17 to 23, characterised in that the plastic sheet or bag is fixed to the outer peripheral edge of two opposite walls of the tray.
  25. Packaging device for at least one product of unspecified shape not occupying the whole of the volume available in the packaging, characterised in that it incorporates:
    - means (91) for forming a first assembly (92) comprising:
    . a tray (93) made of cardboard or corrugated cardboard,
    . and a sheet (94) or bag made of heat-shrinkable plastic stuck to the peripheral edges of two opposite walls of the tray,
    - means for moving the first assembly, in order to fill the product or products (127) to be packed in the tray, over the plastic film or inside the bag,
    - means (131) for bringing and pressing flat against the top of the said tray a blank (132) suitable for completely covering the open face of the tray and for enveloping at least in part the said tray, in order to form a second assembly,
    - means (136) for turning the said second assembly upside-down through 180° and for holding the said products substantially in place during the said inversion, the products then resting on the inner face of the blank covering the open face of the said tray, while forming a passage towards the plastic film in order to permit it to be heated,
    - means for heating, arranged so as to shrink the film or the bag and to press the product or products flat against the said inner face,
    - and means for completely closing the blank over the inverted tray and for fixing the said blank on to the said tray using an adhesive.
  26. Device according to Claim 25, characterised in that the means for forming the first assembly comprise means (99, 101) for folding a blank in order to form the tray and means (113) for bringing up the film or bag and sticking it to the peripheral edges of the tray thus formed.
  27. Device according to Claim 26, characterised in that the means for forming the first assembly comprise means for sticking the plastic film or bag on to the flattened blank intended to form the said tray, followed by means for putting the assembly into shape in order to obtain the said covered tray inside the film by folding.
  28. Device according to any one of Claims 25 to 27, characterised in that the means for sticking the film or bag to the tray are arranged so as to stick the said film or the said bag to the inner peripheral edges of two opposite walls of the tray.
  29. Device according to any one of Claims 25 to 28, characterised in that the means for sticking the film or bag to the tray are arranged so as to stick the said film or the said bag to the outer peripheral edges of two opposite walls of the tray.
EP95401819A 1994-08-05 1995-08-02 Package for a product of non specific shape, set of blanks, process and device for obtaining such a package Expired - Lifetime EP0697338B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9409772 1994-08-05
FR9409772A FR2723354B1 (en) 1994-08-05 1994-08-05 PACKAGING PACKAGE FOR A PRODUCT OF NON-SPECIFIC SHAPE, BLANK ASSEMBLY, METHOD AND DEVICE FOR OBTAINING SUCH A PACKAGE.

Publications (2)

Publication Number Publication Date
EP0697338A1 EP0697338A1 (en) 1996-02-21
EP0697338B1 true EP0697338B1 (en) 1997-03-05

Family

ID=9466137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401819A Expired - Lifetime EP0697338B1 (en) 1994-08-05 1995-08-02 Package for a product of non specific shape, set of blanks, process and device for obtaining such a package

Country Status (5)

Country Link
EP (1) EP0697338B1 (en)
AT (1) ATE149447T1 (en)
DE (1) DE69500172T2 (en)
ES (1) ES2101599T3 (en)
FR (1) FR2723354B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2854135B1 (en) * 2003-04-24 2006-03-17 Smurfit Socar Sa FLAN PREDECOUPE AND REFOULE IN A SEMI-RIGID MATERIAL EQUIPPED WITH PLASTIC SOFT FILMS
FR2854136B1 (en) * 2003-04-25 2005-07-15 Smurfit Socar Sa IMPROVEMENTS IN PACKAGING OF A SEMI-RIGID MATERIAL COMPRISING ONE OR MORE SOFT FILMS FIXED ON A PART OF THE SUBSTANCE
FR2854379B1 (en) * 2003-04-29 2005-07-15 Savoye Logistics PRODUCT PACKAGING SYSTEM WITH RETRACTABLE FILM SETTING
US9821925B2 (en) * 2012-01-18 2017-11-21 Rengo Co., Ltd. Method and device for assembling height-adjustable box

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506722A1 (en) * 1981-06-01 1982-12-03 Socar Boxes made from flat sheet preforms - carrying panel of retractable film to simplify fabrication and assembly for parking part loads
FR2577519B1 (en) * 1985-02-18 1989-12-01 Socar PACKAGING CONVERTIBLE INTO CARDBOARD
FR2625181B1 (en) 1987-12-29 1990-06-22 Socar PACKAGING FOR RETRACTABLE PLASTIC FILM PACKAGING OF AT LEAST ONE OBJECT

Also Published As

Publication number Publication date
DE69500172D1 (en) 1997-04-10
DE69500172T2 (en) 1997-06-12
FR2723354A1 (en) 1996-02-09
FR2723354B1 (en) 1996-10-04
ES2101599T3 (en) 1997-07-01
EP0697338A1 (en) 1996-02-21
ATE149447T1 (en) 1997-03-15

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