EP0225208B1 - Package and method for packaging products in cling films - Google Patents

Package and method for packaging products in cling films Download PDF

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Publication number
EP0225208B1
EP0225208B1 EP86402273A EP86402273A EP0225208B1 EP 0225208 B1 EP0225208 B1 EP 0225208B1 EP 86402273 A EP86402273 A EP 86402273A EP 86402273 A EP86402273 A EP 86402273A EP 0225208 B1 EP0225208 B1 EP 0225208B1
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EP
European Patent Office
Prior art keywords
side walls
attachments
sheets
walls
anyone
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
Application number
EP86402273A
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German (de)
French (fr)
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EP0225208A1 (en
Inventor
Henry Savoye
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.)
Savoye Nouvelle SA
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Savoye Nouvelle SA
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Publication date
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Application filed by Savoye Nouvelle SA filed Critical Savoye Nouvelle SA
Priority to AT86402273T priority Critical patent/ATE41393T1/en
Publication of EP0225208A1 publication Critical patent/EP0225208A1/en
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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
    • 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
    • B65D5/5088—Plastic elements

Definitions

  • the present invention relates to a packaging, in particular cardboard, for overpacking products deposited on a bottom of the packaging, by two sheets of the shrinkable plastic type.
  • the sheets are arranged inside the packaging, between two opposite walls of the latter, and cover all of the products placed in order to hold them against the bottom, following a heat shrinkage of the sheets.
  • the products thus packaged and overwrapped can be boxes, bottles, documents or any grouped objects, or any product, pre-conditioned or not, grouped or put individually in the packaging.
  • the batch of products can be homogeneous or heterogeneous.
  • first lateral edges of shrink sheets are bonded directly along regions adjacent to the junctions between the internal face of the bottom and the internal faces of two opposite walls of a cardboard box.
  • first sheet borders are bonded to the bottom
  • first sheet borders are bonded respectively to the internal faces of the two opposite walls in close proximity to the bottom.
  • the leaves are developed from the bottom, immediately moving away from the bottom, vertically thereof, so that second borders of the sheets overlap above the products.
  • the external faces of the first edges of the sheets, not in contact with the products, are glued to the internal face of the bottom or to the internal faces of the opposite walls.
  • the main object of the present invention is to increase the resistance of the bonds of the sheets to the packaging.
  • a cardboard or similar material packaging comprising a bottom and two opposite walls, as well as two sheets of the retractable plastic type intended to cover products placed on the bottom, is characterized in that it comprises two fastening elements applied against the internal faces of the walls and in that the sheets have first edges enclosed respectively between the fastening elements and the internal faces of the walls and are developed between the walls from the first edges, first towards the bottom, then bypassing the fasteners.
  • the fastening elements may be upper flaps of the walls, added plates which may constitute parts of the walls, or lateral extensions of opposite second walls of the packaging.
  • the packaging can be a simple support with two walls applied against the products, or an open or closed box, or even a tray.
  • Different connections on the one hand from the first sheet borders to the fixing elements, on the other hand from fixing elements to the rest of the packaging can be selected in order to further increase the resistance to tearing off the sheets, and / or to increase the stacking resistance of the packaging, and / or to reduce the consumption of cardboard and / or to reduce the cost of the packaging.
  • the invention also relates to a blank of cardboard or similar material, precut and grooved from which is formed a package according to the invention.
  • the blank is characterized in that it comprises two sheets of the retractable plastic kind, having first borders fixed, preferably by gluing, stapling or the like, on or in portions separable or not from the rest of the blank, acting as elements of fixation.
  • Such blanks can be supplied to a user and stored, when the user has only one packaging form former.
  • the method of manufacturing a package according to the invention mainly comprises fixing the first edges of the sheets on or in portions of a precut and grooved blank serving as fastening elements, applying the fastening elements against faces internal portions of the blank serving as opposite walls of the packaging so that the sheets are developed from the first edges in the direction of one or portions of the blank serving as the bottom of the packaging, and forming of the packing intervening after or before the fixing of the sheets and / or the application of the fixing elements.
  • a cardboard package 1 or other similar semi-rigid material comprises a bottom 10 and two opposite walls 11 and 12 each provided with an upper fixing flap 13, 14.
  • Each flap 13, 14 offers a transverse free edge 130 , 140 parallel to the bottom. All these parts of the package 1 are assumed here to be rectangular, and more generally, reference is made hereinafter to packages having a generally parallelepiped shape, although packages according to the invention may be polyhedral.
  • the top face, or so-called internal face, of the bottom 10 directly receives a load, consisting of a batch of products P, homogeneous or heterogeneous, such as small boxes.
  • the flaps 13 and 14 initially extend the walls 11 and 12 before forming the packaging and are delimited with respect thereto by upper creasing lines 15 and 16, parallel to the bottom and to the edges 130, 140, serving as lines folding to fold down by opposite pivoting of 180 ° towards the bottom, the flaps 13 and 14 against the internal faces opposite the walls 11 and 12.
  • two sheets or strips of heat-shrinkable plastic film 17 and 18 Prior to the pivoting operation, two sheets or strips of heat-shrinkable plastic film 17 and 18 have first transverse edges or edges 171 and 181 fixed, preferably by gluing, or by heat-sealing such as heat-bonding or heat-sealing, or by stapling. , or other similar method, on the internal faces opposite the flaps 13 and 14, in the vicinity of the edges 130 and 140.
  • the width of the sheets 17 and 18 is substantially equal to that of the flaps 13 and 14, and more generally, can be greater or less than the width of the walls 11 and 12.
  • each sheet is approximately equal to the sum of the half-length of the bottom 10 and approximately twice the height of the flaps 13 and 14 so that two second transverse free borders 172 and 182 of the sheets 17 and 18 can overlap above the products P for a heat-shrinking operation.
  • the first border 171, 172 of the sheet is sandwiched between these two internal faces, that is to say sandwiched between them, and is held firmly against them by fixing the flap 13,14 to the wall 11,12, for example by gluing, heat sealing, stapling, or other similar process.
  • the longitudinal edges 174 and 184 of the sheets 17 and 18 then follow vertical paths descending in the direction of the transverse edges 130 and 140 and from the bottom 10 from the first fixed transverse edges 171 and 181, elbows at 180 ° to circumvent the transverse edges 130 and 140 of the flaps 13 and 14, then paths directed upwards, vertical or substantially oblique depending on the shape of the products and in particular their height, and finally substantially horizontal paths substantially above the transverse perpendicular bisector of the bottom 10 where the edges 172 and 182 are superimposed.
  • the firm bracing of the edges 171 and 181 of the sheets between the flaps and the walls and of the change in direction of the development of the sheets under the edges 130 and 140 thus increase the resistance to tearing off of the sheets, in particular when the load constituted by the rental P pushes the sheets 17 and 18 upwards following stresses, such as shocks to the packaging or overturning of the packaging.
  • the height of the flaps 13 and 14 is less than that of the walls 11 and 12, and is chosen according to the size of the products so that the edges 130 and 140 of the folded flaps 13 and 14 from which emerge upwards the sheets 17 and 18 are at a distance from the bottom 10 always less than the maximum height of the products, the products can then be pressed against the bottom during the heat-shrinking operation of the sheets. This makes it possible to reduce the consumption of cardboard as well as that of heat-shrinkable film.
  • the maximum height of the products can be lower or higher than that of the walls 11 and 12.
  • the internal face of a flap 13, 14 can be fixed, for example by gluing, stapling or the like, directly to the internal face of the corresponding wall 11, 12, above the zone for fixing the edge of corresponding sheet 171, 181 to the internal face of the flap, without this sheet border being itself fixed to the internal face of the wall.
  • the fixing of the internal face of a flap 13, 14 facing the corresponding wall 11, 12 is carried out by means of glue intended initially to fix the sheet border 171, 181 on the internal face of the flap and crossing the border to simultaneously glue the flap to the wall, or by simultaneously stapling the flap, the sheet border and the wall.
  • the height of the flaps 13 and 14 is practically equal to that of the walls 11 and 12, which constitutes two true double walls of the packaging which increase the resistance to stacking and to compression of the packaging.
  • the stacking resistance is further increased for corrugated cardboard packaging, when the cardboard grooves or corrugations in the walls 11 and 12 and the flaps 13 and 14 are arranged vertically, that is to say perpendicular to the bottom 10, as indicated by the double arrow F in Fig. 2.
  • the edges 130 and 140 of the flaps may each offer one or two tenons 132, 142 projecting downwards after forming and folding, which penetrate into two mortises 101 and 102 complementary to the tenons, practiced in the bottom 10, at in the vicinity of the bases of the walls 11 and 12, or made on or above the creasing lines 110 and 120 of the walls 11 and 12.
  • the sheets 17 and 18 are, moreover, wedged between the edges 130 and 140 of the flaps 13 and 14 and the internal corners between the walls 11 and 12 and the bottom 10, and are possibly crossed by the studs 132 and 142 ce which further improves the fixing and the tear resistance of the sheets.
  • the cardboard blank 1 a from which the packaging is made as will be seen below has detachable flaps or does not have flaps 13 and 14.
  • the flaps 13 and 14 according to FIG. 1 are replaced by two small cardboard plates 133 and 143, here rectangular, having a width substantially equal to, preferably less than, that of the walls 11 and 12.
  • the plates 133 and 144 are attached above the bottom parallel to and against the walls 11 and 12 and are connected to the edges of sheets 171 and 181 and to the internal faces of the walls 11 and 12 respectively, in a manner analogous to the various connections described above or below for the flaps 13 and 14, of so as to enclose with the walls 11 and 12 the edges of sheets 171 and 181.
  • This variant reduces the amount of cardboard in the packaging compared to the previous variants.
  • a flat blank of rectangular cardboard, 1a pushed from a store of such cardboard blanks, is introduced at the entrance of a gluing machine, as shown in FIG. 4.
  • the blank 1 a offers four rectangular portions on either side of a central rectangle forming the bottom 10, to constitute the walls 11 and 12 and the flaps 14 and 15 separated respectively from the bottom by the creasing lines 110 and 120 and between them by the crease lines 15 and 16.
  • the fixing portions 14 and 15 of the blank are plates 133 and 143 shown in FIG. 3
  • the lines 15 and 16 are precut lines to separate the portions 14 and 15 from the rest of the blank and thus constitute two separate fixing elements. According to the process illustrated in FIG.
  • discontinuous lines of hot-melt glue 111,121 and 131,141 are deposited transversely on the top faces of the walls 11 and 12 and of the flaps 13 and 14 by nozzles of the gluing machine. Then at a station for cutting and laying sheets of plastic film which may be overlying a forming machine, one or two punches or sliding jaws apply the first edges 171 and 181 of two heat-shrinkable plastic films unrolled from two rolls of film.
  • a central punch or part of the aforementioned single punch engages the blank 1a in a die of a forming machine, or suitable pivotable pushers of a forming machine fold the blank, so that the walls 11 and 12 with their flaps 13 and 14 are erected perpendicular to the bottom 10, as shown in FIG. 5.
  • Pivoting pushers then fold the flaps 13 and 14 180 ° towards the inside of the packaging, against the walls 11 and 12 so that the internal faces of the flaps 13 and 14 and / or the internal faces of the edges 171 and 181 - which correspond to the internal faces of the sheets 17 and 18 intended to be in contact with the products P - are fixed against the internal faces of the walls 11 and 12.
  • the films are preferably cut to the desired length to constitute the sheets 17 and 18 which, preferably, have their major part released from the top of the bottom and distant towards the outside, as shown in FIG. 6, in order to allow manual or automatic installation of the products P on the bottom 10 at a filling station.
  • the external edges 172 and 182 of the sheets have external faces slightly fixed against the external faces of the walls 11 and 12 by means, for example, of small adhesive spots 112 and 122 previously deposited in same time as the lines of glue 111,121,131 and 141, or small tapes, preferably removable, double-sided adhesive, or the like.
  • the sheets 17 and 18 are folded over the products and the edges 172 and 182 overlap on the products so that the packaging thus formed enters a heat shrinking oven known to heat seal the second edges of the sheet 172 and 182 and to heat shrink the sheets 17 and 18 against the products P and press them against the bottom 10.
  • the heat-shrinkable film used is a plastic polymer, such as polyethylene, polypropylene or polyalkylene, and is mono-oriented, although it can be bi-oriented, so that the sheets 17 and 18 offer a main direction of retraction above the products, longitudinal and perpendicular to the walls 11 and 12.
  • the packaging 1 is thus ready during shipment and can be, if desired, overwrapped by insertion into a flap box of the American box type, or by styling by a semi-American box.
  • the pivoting and the application of the flaps 13 and 14 against the walls 11 and 12 can take place when the blank 1a is flat, before the forming operation consisting in straightening the walls.
  • the packaging is first formed in a forming station where the walls 11 and 12 and the flaps 13 and 14 are erected vertically, as shown in FIG. 5, then the packaging has its erect walls glued at 111, 121, 131 and 141, receives ends of film 131 and 132 from two film unwinders which are col lées on the flaps, and has its flaps 13 and 14 folded 90 ° ; then the films are cut to release the two sheets falling into the package.
  • the blank 1 a with sheets 17 and 18 cut and fixed to the flaps 13 and 14, and optionally fixed to the underside and outer faces of the walls 11 and 12, can be manufactured as is by a cardboard box, and introduced into the entry of a forming machine for a user wishing to make the packaging.
  • the prepared blank can offer flaps 13 and 14 fixed to the top and internal faces of the walls 11 and 12.
  • Such a blank can also be a folded and flattened box or tray blank.
  • the transverse borders 171 and 181 of the sheets 17 and 18 are embedded in the structure of the flaps 13 and 14 respectively, during the production of the cardboard blank 1a.
  • the edges of the sheets 171 and 181 are trapped respectively between facing faces of two sheets of cardboard 135, 136 and 145, 146 for a duplex or single-sided cardboard, or between faces facing the one of two sheets of cardboard and a corrugated cardboard sheet for a double-sided or double double-sided corrugated cardboard, or between facing faces of any two sheets of cardboard for a multi-sheet cardboard.
  • the internal face 135, 145 of the flap 13, 14 is always applied against the internal face of the corresponding wall 11, 12 and fixed thereto.
  • the cardboard is a corrugated cardboard; although undulations are presented horizontally, these undulations are in practice and according to the invention oriented vertically, as indicated by the double arrow F in FIG. 2.
  • a package 2 is a parallelepipedic or cubic box, of the American box type, offering a bottom 20, two first parallel walls 21 and 22 and two second parallel walls 291 and 292.
  • Two upper fixing flaps 23 and 24 extending the walls 21 and 22 and delimited with respect to these by crease lines are folded 180 ° inside the body 2 and against the internal faces of the faces 21 and 22 to enclose therewith edges 271 and 281 of two retractable plastic sheets 27 and 28 suitable for overlapping and being heat-shrunk above products P placed inside on the bottom 20.
  • two second upper flaps 293 and 294 extending the second walls 291 and 292 delimited therefrom by creasing lines can be provided to close the box and thus protect the products P.
  • the flaps 293 and 294 are coated according to a plane perpendicular to the walls of the body.
  • the flaps 293 and 294 can be connected together for example by adhesive tape, or held coplanarly by wrapping the box.
  • the second flaps 293 and 294 are replaced by a cover or cover having a central panel similar to the bottom and bordered or not with one, two, three or four flaps applied against respective walls 21, 22, 291 and 292 of the case.
  • the small added plates or strips 133 and 143 may be panels having lengths and heights respectively substantially equal, or equal and different, from those of walls 21 and 22, or portions of an annular belt with rectangular section C, also called case, crown or tube, as shown in broken lines in FIG. 3, applied against the internal faces of the four walls 21, 291, 22 and 292 of the box.
  • the belt may have two opposite walls having heights different from those of the other two.
  • the bottom 10 of the box can be constituted by a simple cardboard panel, or by two flaps, or by four flaps superimposed in a conventional manner.
  • the bottom comes from a blank similar to the blank 1a, but devoid of end panels 13 and 14, and comprises one, two, three or four panels, such that 11 and 12, which can form the walls of a box when these panels have a height greater than that of the belt as shown in FIG. 3, or which can form flaps of a lower cover of the packaging when these panels, as indicated in 503 and 504 in FIG. 11, have a height less than that of the belt indicated in C, 53 and 54 in FIG. 11.
  • the belt is first formed, the sheets are attached to the belt, and the cap is formed and applied to the belt containing the sheets.
  • a package 3 is a tray 3 having a bottom 30, two large parallel walls 31 and 32, two small parallel walls 391 and 392 having heights lower than those of the large walls 31 and 32, and two fixing flaps 33 and 34
  • the flaps-33 and 34 are delimited by creasing lines 35 and 36 defining upper edges of the walls 31 and 32 and are folded against the internal faces of these to enclose with them first transverse edges 371 and 381. of two plasti sheets ques retractables 37 and 38 developed between the large walls 31 and 32.
  • the flaps 33 and 34 are replaced by flaps delimited by creasing lines defining upper edges of the small walls 391 and 392 and are folded against the internal faces thereof to enclose therewith the edges of two shrinkable plastic sheets.
  • first edges 471 and 481 of two retractable plastic sheets 47 and 48 are sandwiched between the internal faces of small walls 41 and 42 on the one hand, and external faces of pairs of lateral reinforcing extensions or overhangs 43 and 44 of high walls 491 and 492, on the other hand, the overhangs being folded perpendicular to the high walls towards the inside of the tray 4 and applied respectively against longitudinal ends of the internal faces of the small walls.
  • a variant similar to the previous one consists of enclosing the first edges 471 and 481 of two sheets 47 and 48 between the internal faces of the high walls of a tray on the one hand, and the external faces of pairs of lateral extensions or overhangs of reinforcement of the small walls, on the other hand, the overhangs being folded perpendicular to the small walls towards the inside of the tray and applied respectively against longitudinal ends of the internal faces of the high walls.
  • the sheets 47 and 48 pass between the lower edges, such as 430 and 440, of the overhangs and the bottom, the overflows playing a function similar to the flaps of the previous embodiments with regard to the fixing of the first borders. plastic sheets.
  • two first opposite walls are each essentially constituted by a fixing panel 53, 54 completely separated from a cardboard blank constituting the rest of the packaging during the formation of the packaging.
  • the cardboard blank has, after folding and forming, a bottom 50, two second parallel walls 591 and 592, two extensions, also called extreme overhangs or flaps, in isosceles trapezoid 503 and 504 of the bottom 50 erected perpendicular to the bottom between the walls 591 and 592, and two pairs of extreme trapezoidal extensions or overhangs 51 and 52 of the walls 591 and 592 erected vertically and perpendicular to them and between them.
  • First edges 571, 581 of two retractable plastic sheets 57 and 58 are fixed in the lower part of the external faces of the panels 53 and 54 not opposite and respectively opposite the internal faces of the extensions 503, 51 and 504, 52
  • the panels 53 and 54 are attached to the inside of the package 5, and the external faces of the panels 53 and 54 are then applied against the internal faces of the respective extensions.
  • the sheets 57 and 58 emerge inside the packaging 5, after passing under lower edges 530 and 540 of the panels 53 and 54 and above the bottom 50.
  • the packaging 5 constitutes a tray.
  • the fixing panels 53 and 54 are those of a parallelepiped belt C.
  • the overhangs 51 and 52 can be eliminated, and the height of the walls 591 and 592 can be less than that of the belt C.
  • the walls 591 and 592 have a height equal to that of the flaps 503 and 504 so as to form a lower cover 50 with four flaps 591, 592, 503 and 504 applicable against the external faces of the belt constituting the four walls of the 'packaging.
  • each of the trays, or open cases, or similar packages, shown in Figs. 9, 10 and 11, is capable of being capped by a cover having for example two side panels applied for example against small container walls.
  • the central panel of the cover above the bottom may possibly be supported on entablatures extending by upper folding the large walls of the tray, and may have mortises cooperating with upper tenons of the large walls of the tray.

Abstract

The package comprises a bottom part (10) and two opposite walls (11, 12), as well as two retractable plastic sheets (17, 18) intended to cover the products (P) and to press the latter against the bottom part. In order to achieve highly resistant connections between the sheets and the package, two fixing elements such as wall flaps (13, 14) built-in panels, or walls of a built-in belt, are applied against the internal faces of the walls (11, 12), and edges (171, 181) of the sheets (17, 18) are encompassed respectively between the fixing elements (13, 14) and the internal faces of the walls (11, 12). The sheets are developed between the walls from said edges (171, 181) first towards the bottom part (10) and then surrounding the fixing elements (13, 14). The package may be a cardboard box or receptacle.

Description

La présente invention concerne un emballage notamment en carton pour suremballer des produits déposés sur un fond de l'emballage, par deux feuilles du genre plastique rétractable. Les feuilles sont disposées à l'intérieur de l'emballage, entre deux parois opposées de celui-ci, et recouvrent l'ensemble des produits posés afin de les maintenir contre le fond, suite à une thermorétraction des feuilles.The present invention relates to a packaging, in particular cardboard, for overpacking products deposited on a bottom of the packaging, by two sheets of the shrinkable plastic type. The sheets are arranged inside the packaging, between two opposite walls of the latter, and cover all of the products placed in order to hold them against the bottom, following a heat shrinkage of the sheets.

Les produits ainsi conditionnés et suremballés peuvent être des boîtes, des flacons, des documents ou tous objets regroupés, ou tous produits préconditionnés ou non, regroupés ou mis unitaire- ment dans l'emballage. Lorsque plusieurs produits sont conditionnés dans le même emballage, le lot de produits peut être homogène ou hétérogène.The products thus packaged and overwrapped can be boxes, bottles, documents or any grouped objects, or any product, pre-conditioned or not, grouped or put individually in the packaging. When several products are packaged in the same packaging, the batch of products can be homogeneous or heterogeneous.

Selon le brevet français FR-B 2 426 620, des premières bordures latérales de feuilles rétractables sont collées directement le long de régions adjacentes aux jonctions entre la face interne du fond et les faces internes de deux parois opposées d'une caisse en carton. Selon une première variante, les premières bordures de feuille sont collées sur le fond, et selon une seconde variante, les premières bordures de feuille sont collées respectivement sur les faces internes des deux parois opposées à proximité immédiate du fond. Dans tous les cas, les feuilles sont développées à partir du fond en s'éloignant immédiatement du fond, à la verticale de celui-ci, afin que des secondes bordures des feuilles se chevauchent au-dessus des produits. Les faces externes des premières bordures des feuilles, non en contact avec les produits, sont collées à la face interne du fond ou aux faces internes des parois opposées.According to French patent FR-B 2 426 620, first lateral edges of shrink sheets are bonded directly along regions adjacent to the junctions between the internal face of the bottom and the internal faces of two opposite walls of a cardboard box. According to a first variant, the first sheet borders are bonded to the bottom, and according to a second variant, the first sheet borders are bonded respectively to the internal faces of the two opposite walls in close proximity to the bottom. In all cases, the leaves are developed from the bottom, immediately moving away from the bottom, vertically thereof, so that second borders of the sheets overlap above the products. The external faces of the first edges of the sheets, not in contact with the products, are glued to the internal face of the bottom or to the internal faces of the opposite walls.

Avec un tel emballage, il s'est avéré que la résistance à l'arrachage ou au cisaillement des liaisons des feuilles plastiques à l'intérieur de l'emballage n'est pas suffisamment élevée lorsque l'emballage est soumis à des chocs, chutes ou retournements notamment lors de manutention et transport. En effet, dans ces conditions, sous l'action de l'inertie et du poids des produits emballés, les liaisons des feuilles aux parois ou au fond cèdent et libèrent ainsi les produits, contrairement au but recherché d'un tel emballage consistant à plaquer et immobiliser les produits contre le fond.With such a packaging, it has been found that the resistance to tearing or shearing of the bonds of the plastic sheets inside the packaging is not sufficiently high when the packaging is subjected to impacts, drops or turnaround in particular during handling and transport. In fact, under these conditions, under the action of the inertia and the weight of the packaged products, the connections of the sheets to the walls or to the bottom give way and thus release the products, contrary to the aim sought for such packaging consisting in pressing and immobilize the products against the bottom.

La présente invention vise principalement à augmenter la résistance des liaisons des feuilles à l'emballage.The main object of the present invention is to increase the resistance of the bonds of the sheets to the packaging.

A cette fin, un emballage en carton ou matière analogue comportant un fond et deux parois opposées, ainsi que deux feuilles du genre plastique rétractable destinées à recouvrir des produits posés sur le fond, est caractérisé en ce qu'il comprend deux éléments de fixation appliqués contre des faces internes des parois et en ce que les feuilles ont des premières bordures enserrées respectivement entres les éléments de fixation et les faces internes des parois et sont développées entre les parois à partir des premières bordures, d'abord en direction du fond, puis en contournant les éléments de fixation.To this end, a cardboard or similar material packaging comprising a bottom and two opposite walls, as well as two sheets of the retractable plastic type intended to cover products placed on the bottom, is characterized in that it comprises two fastening elements applied against the internal faces of the walls and in that the sheets have first edges enclosed respectively between the fastening elements and the internal faces of the walls and are developed between the walls from the first edges, first towards the bottom, then bypassing the fasteners.

Grâce à l'enserrement des premières bordures des feuilles entre les éléments de fixation et les faces internes des parois et au développement de coudes des feuilles, pratiquement à 180°, en vis-à-vis du fond pour contourner les éléments de fixation, la résistance à l'arrachage et au cisaillement des feuilles est considérablement accrue, et pratiquement les liaisons des feuilles aux éléments de fixation appliqués contre les parois de l'emballage ne peuvent pas céder.Thanks to the clamping of the first edges of the sheets between the fastening elements and the internal faces of the walls and to the development of bends in the sheets, practically at 180 ° , facing the bottom to bypass the fastening elements, the resistance to tearing and shearing of the sheets is considerably increased, and practically the connections of the sheets to the fastening elements applied against the walls of the package cannot fail.

Comme on le verra dans la suite, les éléments de fixation peuvent être des rabats supérieurs des parois, des plaques rapportées pouvant constituer des parties des parois, ou des prolongements latéraux de secondes parois opposées de l'emballage. L'emballage peut être un simple support doté de deux parois appliquées contre les produits, ou une caisse ouverte ou fermée, ou encore une barquette.As will be seen below, the fastening elements may be upper flaps of the walls, added plates which may constitute parts of the walls, or lateral extensions of opposite second walls of the packaging. The packaging can be a simple support with two walls applied against the products, or an open or closed box, or even a tray.

Différentes liaisons d'une part des premières bordures de feuille aux éléments de fixation, d'autre part des éléments de fixation au reste de l'emballage peuvent être sélectionnées en vue d'augmenter encore la résistance à l'arrachage des feuilles, et/ou d'augmenter la résistance au gerbage de l'emballage, et/ou de réduire la consommation de carton et/ou de réduire le coût de l'emballage.Different connections on the one hand from the first sheet borders to the fixing elements, on the other hand from fixing elements to the rest of the packaging can be selected in order to further increase the resistance to tearing off the sheets, and / or to increase the stacking resistance of the packaging, and / or to reduce the consumption of cardboard and / or to reduce the cost of the packaging.

L'invention concerne également un flan en carton ou matière analogue, prédécoupé et rainé à partir duquel est formé un emballage selon l'invention. Le flan est caractérisé en ce qu'il comporte deux feuilles du genre plastique rétractable, ayant des premières bordures fixées, de préférence par collage, agrafage ou analogue, sur ou dans des portions séparables ou non du reste du flan, faisant office d'éléments de fixation. De tels flans peuvent être fournis à un utilisateur et stockés, lorsque l'utilisateur ne possède qu'une formeuse d'emballage.The invention also relates to a blank of cardboard or similar material, precut and grooved from which is formed a package according to the invention. The blank is characterized in that it comprises two sheets of the retractable plastic kind, having first borders fixed, preferably by gluing, stapling or the like, on or in portions separable or not from the rest of the blank, acting as elements of fixation. Such blanks can be supplied to a user and stored, when the user has only one packaging form former.

Le procédé de fabrication d'un emballage selon l'invention comprend principalement une fixation des premières bordures des feuilles sur ou dans des portions d'un flan prédécoupé et rainé faisant office d'éléments de fixation, une application des éléments de fixation contre des faces internes de portions du flan faisant office de parois opposées de l'emballage afin que les feuilles soient développées à partir des premières bordures en direction d'une ou de portions du flan faisant office de fond de l'emballage, et un formage de l'emballage intervenant après ou avant la fixation des feuilles et/ou l'application des éléments de fixation.The method of manufacturing a package according to the invention mainly comprises fixing the first edges of the sheets on or in portions of a precut and grooved blank serving as fastening elements, applying the fastening elements against faces internal portions of the blank serving as opposite walls of the packaging so that the sheets are developed from the first edges in the direction of one or portions of the blank serving as the bottom of the packaging, and forming of the packing intervening after or before the fixing of the sheets and / or the application of the fixing elements.

D'autres avantages et caractéristiques de l'invention apparaîtront plus clairement à la lecture de la description qui suit de plusieurs réalisations préférées de l'invention en référence aux dessins annexés correspondants dans lesquels:

  • - la Fig. 1 est une vue en perspective d'un emballage à deux parois et fond-support, ayant deux rabats de fixation;
  • - la Fig. 2 est une vue analogue à la Fig. 1, montrant un emballage avec des rabats de fixation à tenons coopérant avec des mortaises au voisinage du fond;
  • - la Fig. 3 est une vue analogue à la Fig. 1, montrant un emballage avec des plaques ou une ceinture de fixation rapportées;
  • - la Fig. 4 est une vue de dessus d'un flan de carton à partir duquel est formé l'emballage selon la Fig. 1;
  • - la Fig. 5 est une vue en perspective de l'emballage de la Fig. 1 en cours de formage, avant fixation des rabats;
  • - la Fig. 6 est une vue en perspective de l'emballage de la Fig. 1, avant remplissage de produits;
  • - la Fig. 7 est une vue analogue à la Fig. 6, d'un emballage dans lequel des premières bordures de feuilles plastiques rétractables sont noyées dans la structure des rabats;
  • - la Fig. 8 est une vue en perspective d'une caisse américaine dans laquelle des feuilles plastiques rétractables sont enserrées entre des rabats supérieurs et des parois de la caisse, selon l'invention;
  • - la Fig. 9 est une vue en perspective analogue à la Fig. 8, montrant une barquette;
  • - la Fig. 10 est une vue en perspective d'une autre barquette dans laquelle des feuilles plastiques rétractables sont enserrées entre des prolongements de renforcement de secondes parois et des premières parois; et
  • - la Fig. 11 est une vue en perspective éclatée d'une caisse ouverte dans laquelle des parois rapportées enserrent avec des prolongements d'autres parois, des feuilles plastiques rétractables.
Other advantages and characteristics of the invention will appear more clearly on reading the following description of several preferred embodiments of the invention with reference to the corresponding appended drawings in which:
  • - Fig. 1 is a perspective view of a package with two walls and a support bottom, having two fixing flaps;
  • - Fig. 2 is a view similar to FIG. 1, showing a package with tenon fixing flaps cooperating with mortises in the vicinity of the bottom;
  • - Fig. 3 is a view similar to FIG. 1, showing a package with plates or a belt re reported attachment;
  • - Fig. 4 is a top view of a cardboard blank from which the packaging according to FIG. 1;
  • - Fig. 5 is a perspective view of the packaging of FIG. 1 during forming, before fixing the flaps;
  • - Fig. 6 is a perspective view of the packaging of FIG. 1, before filling of products;
  • - Fig. 7 is a view similar to FIG. 6, a package in which first edges of shrinkable plastic sheets are embedded in the structure of the flaps;
  • - Fig. 8 is a perspective view of an American box in which shrinkable plastic sheets are sandwiched between upper flaps and walls of the box, according to the invention;
  • - Fig. 9 is a perspective view similar to FIG. 8, showing a tray;
  • - Fig. 10 is a perspective view of another tray in which shrinkable plastic sheets are sandwiched between reinforcing extensions of second walls and first walls; and
  • - Fig. 11 is an exploded perspective view of an open box in which attached walls enclose with extensions of other walls, shrinkable plastic sheets.

Selon une première réalisation montrée à la Fig. 1, un emballage en carton 1 ou en autre matière analogue semi-rigide comprend un fond 10 et deux parois opposées 11 et 12 munies chacune d'un rabat supérieur de fixation 13, 14. Chaque rabat 13, 14 offre un chant libre transversal 130, 140 parallèle au fond. Toutes ces parties de l'emballage 1, sont supposées ici rectangulaires, et plus généralement, on se référa dans la suite à des emballages ayant une forme générale parallélépipédique, bien que des emballages selon l'invention puissent être polyédriques.According to a first embodiment shown in FIG. 1, a cardboard package 1 or other similar semi-rigid material comprises a bottom 10 and two opposite walls 11 and 12 each provided with an upper fixing flap 13, 14. Each flap 13, 14 offers a transverse free edge 130 , 140 parallel to the bottom. All these parts of the package 1 are assumed here to be rectangular, and more generally, reference is made hereinafter to packages having a generally parallelepiped shape, although packages according to the invention may be polyhedral.

La face de dessus, ou dite face interne, du fond 10 reçoit directement une charge, constituée par un lot de produits P, homogènes ou hétérogènes, tels que des petites boîtes. Les rabats 13 et 14 prolongent initiallement les parois 11 et 12 avant formage de l'emballage et sont délimités par rapport à celles-ci par des lignes de rainage supérieures 15 et 16, parallèles au fond et aux chants 130, 140, servant de lignes de pliage pour rabattre par des pivotements opposés de 180° vers le fond, les rabats 13 et 14 contre les faces internes en regard des parois 11 et 12.The top face, or so-called internal face, of the bottom 10 directly receives a load, consisting of a batch of products P, homogeneous or heterogeneous, such as small boxes. The flaps 13 and 14 initially extend the walls 11 and 12 before forming the packaging and are delimited with respect thereto by upper creasing lines 15 and 16, parallel to the bottom and to the edges 130, 140, serving as lines folding to fold down by opposite pivoting of 180 ° towards the bottom, the flaps 13 and 14 against the internal faces opposite the walls 11 and 12.

Préalablement à l'opération de pivotement, deux feuilles ou lés de plastique film thermorétractable 17 et 18 ont des premières bordures ou rives transversales 171 et 181 fixées, de préférence par collage, ou par thermoscellement tel que thermocollage ou ther- mosoudage, ou par agrafage, ou autre procédé analogue, sur les faces internes en regard des rabats 13 et 14, au voisinage des chants 130 et 140. La largeur des feuilles 17 et 18 est sensiblement égale à celle des rabats 13 et 14, et plus généralement, peut être supérieure ou inférieure à la largeur des parois 11 et 12. La longueur de chaque feuille est environ égale à la somme de la demi-longueur du fond 10 et du double environ de la hauteur des rabats 13 et 14 afin que deux secondes bordures libres transversales 172 et 182 des feuilles 17 et 18 puissent se chevaucher au-dessus des produits P en vue d'une opération de thermorétraction.Prior to the pivoting operation, two sheets or strips of heat-shrinkable plastic film 17 and 18 have first transverse edges or edges 171 and 181 fixed, preferably by gluing, or by heat-sealing such as heat-bonding or heat-sealing, or by stapling. , or other similar method, on the internal faces opposite the flaps 13 and 14, in the vicinity of the edges 130 and 140. The width of the sheets 17 and 18 is substantially equal to that of the flaps 13 and 14, and more generally, can be greater or less than the width of the walls 11 and 12. The length of each sheet is approximately equal to the sum of the half-length of the bottom 10 and approximately twice the height of the flaps 13 and 14 so that two second transverse free borders 172 and 182 of the sheets 17 and 18 can overlap above the products P for a heat-shrinking operation.

Ainsi, après application d'une face interne du rabat 13, 14 contre la face interne de la paroi respective 11,12, la première bordure 171, 172 de la feuille est enserrée entre ces deux faces internes, c'est-à-dire prise en sandwich entre celles-ci, et est maintenue fermement contre celles-ci grâce à une fixation du rabat 13,14 à la paroi 11,12, par exemple par collage, thermocollage, agrafage, ou autre procédé analogue. Les bordures longitudinales 174 et 184 des feuilles 17 et 18 suivent alors des cheminements verticaux descendant en direction des chants transversaux 130 et 140 et du fond 10 à partir des premières bordures transversales fixées 171 et 181, des coudes à 180° pour contourner les chants transversaux 130 et 140 des rabats 13 et 14, puis des cheminements dirigés vers le haut, verticaux ou sensiblement obliques en fonction de la forme des produits et notamment de leur hauteur, et enfin des cheminements sensiblement horizontaux sensiblement au-dessus de la médiatrice transversale du fond 10 où les bordures 172 et 182 sont superposées. L'entretoisement ferme des bordures 171 et 181 des feuilles entre les rabats et les parois et du changement de direction du développement des feuilles sous les chants 130 et 140 augmentent ainsi la résistance à l'arrachage des feuilles, notamment lorsque la charge constituée par les produits P pousse les feuilles 17 et 18 vers le haut suite à des sollicitations, telles que chocs subis par l'emballage ou retournements de l'emballage.Thus, after application of an internal face of the flap 13, 14 against the internal face of the respective wall 11, 12, the first border 171, 172 of the sheet is sandwiched between these two internal faces, that is to say sandwiched between them, and is held firmly against them by fixing the flap 13,14 to the wall 11,12, for example by gluing, heat sealing, stapling, or other similar process. The longitudinal edges 174 and 184 of the sheets 17 and 18 then follow vertical paths descending in the direction of the transverse edges 130 and 140 and from the bottom 10 from the first fixed transverse edges 171 and 181, elbows at 180 ° to circumvent the transverse edges 130 and 140 of the flaps 13 and 14, then paths directed upwards, vertical or substantially oblique depending on the shape of the products and in particular their height, and finally substantially horizontal paths substantially above the transverse perpendicular bisector of the bottom 10 where the edges 172 and 182 are superimposed. The firm bracing of the edges 171 and 181 of the sheets between the flaps and the walls and of the change in direction of the development of the sheets under the edges 130 and 140 thus increase the resistance to tearing off of the sheets, in particular when the load constituted by the produits P pushes the sheets 17 and 18 upwards following stresses, such as shocks to the packaging or overturning of the packaging.

Selon la réalisation illustrée à la Fig. 1, la hauteur des rabats 13 et 14 est inférieure à celle des parois 11 et 12, et est choisie en fonction de l'encombrement des produits afin que les chants 130 et 140 des rabats pliés 13 et 14 d'où émergent vers le haut les feuilles 17 et 18, soient à une distance du fond 10 toujours inférieure à la hauteur maximale des produits, les produits pouvant être ensuite plaqués sur le fond lors de l'opération de thermorétraction des feuilles. Ceci permet de réduire la consommation de carton ainsi que celle de film thermorétractable. Cependant, la hauteur maximale des produits peut être inférieure ou supérieure à celle des parois 11 et 12.According to the embodiment illustrated in FIG. 1, the height of the flaps 13 and 14 is less than that of the walls 11 and 12, and is chosen according to the size of the products so that the edges 130 and 140 of the folded flaps 13 and 14 from which emerge upwards the sheets 17 and 18 are at a distance from the bottom 10 always less than the maximum height of the products, the products can then be pressed against the bottom during the heat-shrinking operation of the sheets. This makes it possible to reduce the consumption of cardboard as well as that of heat-shrinkable film. However, the maximum height of the products can be lower or higher than that of the walls 11 and 12.

Toujours selon la réalisation illustrée à la Fig. 1, la face interne d'un rabat 13, 14 peut être fixée, par exemple par collage, agrafage ou analogue, directement à la face interne de la paroi correspondante 11, 12, au-dessus de la zone de fixation de la bordure de feuille correspondante 171, 181 à la face interne du rabat, sans que cette bordure de feuille soit elle-même fixée à la face interne de la paroi. Selon une autre variante, la fixation de la face interne d'un rabat 13, 14 en regard de la paroi correspondante 11, 12 est effectuée au moyen de colle destinée initialement à fixer la bordure de feuille 171, 181 sur la face interne du rabat et traversant la bordure pour coller simultanément le rabat à la paroi, ou par agrafage simultané du rabat, de la bordure de feuille et de la paroi.Still according to the embodiment illustrated in FIG. 1, the internal face of a flap 13, 14 can be fixed, for example by gluing, stapling or the like, directly to the internal face of the corresponding wall 11, 12, above the zone for fixing the edge of corresponding sheet 171, 181 to the internal face of the flap, without this sheet border being itself fixed to the internal face of the wall. According to another variant, the fixing of the internal face of a flap 13, 14 facing the corresponding wall 11, 12 is carried out by means of glue intended initially to fix the sheet border 171, 181 on the internal face of the flap and crossing the border to simultaneously glue the flap to the wall, or by simultaneously stapling the flap, the sheet border and the wall.

Selon une variante montrée schématiquement à la Fig. 2, la hauteur des rabats 13 et 14 est pratiquement égale à celle des parois 11 et 12, ce qui constitue deux véritables doubles parois de l'emballage qui augmentent la résistance au gerbage et à la compression de l'emballage. La résistance au gerbage est encore accrue pour un emballage en carton ondulé, lorsque les cannelures ou ondulations du carton dans les parois 11 et 12 et les rabats 13 et 14 sont disposées verticalement, c'est-à-dire perpendiculaires au fond 10, comme indiqué par la double flèche F dans la Fig. 2. En particulier, les chants 130 et 140 des rabats peuvent offrir chacun un ou deux tenons 132, 142 saillant vers le bas après formage et pliage, qui pénétrent dans deux mortaises 101 et 102 complémentaires des tenons, pratiquées dans le fond 10, au voisinage des bases des parois 11 et 12, ou pratiquées sur ou au-dessus des lignes de rainage 110 et 120 des parois 11 et 12. Selon la réalisation illustrée à la Fig. 2, les feuilles 17 et 18 sont, en outre, coincées entre les chants 130 et 140 des rabats 13 et 14 et les encoignures internes entre les parois 11 et 12 et le fond 10, et sont éventuellement traversées par les tenons 132 et 142 ce qui améliore encore la fixation et la résistance à l'arrachement des feuilles.According to a variant shown schematically in FIG. 2, the height of the flaps 13 and 14 is practically equal to that of the walls 11 and 12, which constitutes two true double walls of the packaging which increase the resistance to stacking and to compression of the packaging. The stacking resistance is further increased for corrugated cardboard packaging, when the cardboard grooves or corrugations in the walls 11 and 12 and the flaps 13 and 14 are arranged vertically, that is to say perpendicular to the bottom 10, as indicated by the double arrow F in Fig. 2. In particular, the edges 130 and 140 of the flaps may each offer one or two tenons 132, 142 projecting downwards after forming and folding, which penetrate into two mortises 101 and 102 complementary to the tenons, practiced in the bottom 10, at in the vicinity of the bases of the walls 11 and 12, or made on or above the creasing lines 110 and 120 of the walls 11 and 12. According to the embodiment illustrated in FIG. 2, the sheets 17 and 18 are, moreover, wedged between the edges 130 and 140 of the flaps 13 and 14 and the internal corners between the walls 11 and 12 and the bottom 10, and are possibly crossed by the studs 132 and 142 ce which further improves the fixing and the tear resistance of the sheets.

Selon encore une autre variante montrée à la Fig. 3, le flan de carton 1 a à partir duquel est réalisé l'emballage comme on le verra dans la suite, comporte des rabats détachables ou ne comporte pas de rabats 13 et 14. Ainsi les rabats 13 et 14 selon la Fig. 1 sont remplacés par deux petites plaques en carton 133 et 143, ici rectangulaires, ayant une largeur sensiblement égale, de préférence inférieure, à celle des parois 11 et 12. Les plaques 133 et 144 sont rapportées au-dessus du fond parallèlement aux et contre les parois 11 et 12 et sont reliées aux bordures de feuilles 171 et 181 et aux faces internes des parois 11 et 12 respectivement, d'une manière analogue aux diverses liaisons décrites ci-dessus ou ci-après pour les rabats 13 et 14, de manière à enserrer avec les parois 11 et 12 les bordures de feuilles 171 et 181. Cette variante réduit la quantité de carton de l'emballage comparativement aux variantes précédentes.According to yet another variant shown in FIG. 3, the cardboard blank 1 a from which the packaging is made as will be seen below, has detachable flaps or does not have flaps 13 and 14. Thus the flaps 13 and 14 according to FIG. 1 are replaced by two small cardboard plates 133 and 143, here rectangular, having a width substantially equal to, preferably less than, that of the walls 11 and 12. The plates 133 and 144 are attached above the bottom parallel to and against the walls 11 and 12 and are connected to the edges of sheets 171 and 181 and to the internal faces of the walls 11 and 12 respectively, in a manner analogous to the various connections described above or below for the flaps 13 and 14, of so as to enclose with the walls 11 and 12 the edges of sheets 171 and 181. This variant reduces the amount of cardboard in the packaging compared to the previous variants.

Pour réaliser l'emballage 1 notamment selon la Fig. 1, on introduit à l'entrée d'une encolleuse, un flan plat de carton rectangulaire, 1a, poussé à partir d'un magasin de tels flans de carton, comme montré à la Fig. 4. Le flan 1 a offre quatre portions rectangulaires de part et d'autre d'un rectangle central formant le fond 10, pour constituer les parois 11 et 12 et les rabats 14 et 15 séparés respectivement du fond par les lignes de rainage 110 et 120 et entre eux par les lignes de rainage 15 et 16. Cependant, lorsque les portions de fixation 14 et 15 du flan sont des plaquettes 133 et 143 montrées à la Fig. 3, les lignes 15 et 16 sont des lignes de prédécoupage pour séparer les portions 14 et 15 du reste du flan et ainsi constituer deux éléments de fixation distincts. Selon le procédé illustré à la Fig. 4, des traits discontinus de colle thermofusible 111,121 et 131,141, sont déposés transversalement sur les faces de dessus des parois 11 et 12 et des rabats 13 et 14 par des buses de l'encolleuse. Puis à un poste de découpe et de pose de feuilles de film plastique qui peut être sus- jacent à une formeuse, un ou deux poinçons, ou mâchoires coulissants appliquent les premières bordures 171 et 181 de deux films plastiques thermorétrac- tables déroulées à partir de deux rouleaux de film. Puis un poinçon central ou une partie de l'unique poinçon précité engage le flan 1 a dans une matrice d'une formeuse, ou des poussoirs pivotables adéquats d'une formeuse plient le flan, afin que les parois 11 et 12 avec leurs rabats 13 et 14 soient dressées perpendiculairement au fond 10, comme montré à la Fig. 5. Des poussoirs pivotants rabattent ensuite à 180° les rabats 13 et 14 vers l'intérieur de l'emballage, contre les parois 11 et 12 afin que les faces internes des rabats 13 et 14 et/ou les faces internes des bordures 171 et 181 - lesquelles correspondent aux faces internes des feuilles 17 et 18 destinées à être en contact avec les produits P - soient fixées contre les faces internes des parois 11 et 12. A ce stade, de préférence est réalisé une découpe des films à la longueur désirée pour constituer les feuilles 17 et 18 qui, de préférence, ont leur majeure partie dégagée du dessus du fond et éloignée vers l'extérieur, comme montré à la Fig. 6, afin de permettre une pose manuelle ou automatique des produits P sur le fond 10 à un poste de remplissage. Afin de ne point entraver l'opération ultérieure de remplissage, les bordures externes 172 et 182 des feuilles ont des faces externes légèrement fixées contre les faces externes des parois 11 et 12 au moyen par exemple de petits points de colles 112 et 122 préalablement déposés en même temps que les traits de colle 111,121,131 et 141, ou de petits rubans, de préférence amovibles, à double face adhésive, ou analogues. Après dépôt des produits P sur le fond 10, les feuilles 17 et 18 sont rabattues sur les produits et les bordures 172 et 182 se chevauchent sur les produits afin que l'emballage ainsi constitué pénètre dans un four de thermorétraction connu pour ther- mosceller les secondes bordures de feuille 172 et 182 et pour thermorétracter les feuilles 17 et 18 contre les produits P et plaquer ceux-ci contre le fond 10. De préférence, le film thermorétractable utilisé est un polymère plastique, tel que polyèthylène, polypropylène ou polyalkylène, et est mono-orienté, bien qu'il puisse être bi-orienté, afin que les feuilles 17 et 18 offrent une direction principale de rétraction au-dessus des produits, longitudinale et perpendiculaire aux parois 11 et 12. L'emballage 1 est ainsi prêt à l'expédition et peut être, si désiré, surem- ballé par introduction dans une caisse à rabats du genre caisse américaine, ou par coiffage par une caisse semi-américaine.To produce the packaging 1, in particular according to FIG. 1, a flat blank of rectangular cardboard, 1a, pushed from a store of such cardboard blanks, is introduced at the entrance of a gluing machine, as shown in FIG. 4. The blank 1 a offers four rectangular portions on either side of a central rectangle forming the bottom 10, to constitute the walls 11 and 12 and the flaps 14 and 15 separated respectively from the bottom by the creasing lines 110 and 120 and between them by the crease lines 15 and 16. However, when the fixing portions 14 and 15 of the blank are plates 133 and 143 shown in FIG. 3, the lines 15 and 16 are precut lines to separate the portions 14 and 15 from the rest of the blank and thus constitute two separate fixing elements. According to the process illustrated in FIG. 4, discontinuous lines of hot-melt glue 111,121 and 131,141, are deposited transversely on the top faces of the walls 11 and 12 and of the flaps 13 and 14 by nozzles of the gluing machine. Then at a station for cutting and laying sheets of plastic film which may be overlying a forming machine, one or two punches or sliding jaws apply the first edges 171 and 181 of two heat-shrinkable plastic films unrolled from two rolls of film. Then a central punch or part of the aforementioned single punch engages the blank 1a in a die of a forming machine, or suitable pivotable pushers of a forming machine fold the blank, so that the walls 11 and 12 with their flaps 13 and 14 are erected perpendicular to the bottom 10, as shown in FIG. 5. Pivoting pushers then fold the flaps 13 and 14 180 ° towards the inside of the packaging, against the walls 11 and 12 so that the internal faces of the flaps 13 and 14 and / or the internal faces of the edges 171 and 181 - which correspond to the internal faces of the sheets 17 and 18 intended to be in contact with the products P - are fixed against the internal faces of the walls 11 and 12. At this stage, the films are preferably cut to the desired length to constitute the sheets 17 and 18 which, preferably, have their major part released from the top of the bottom and distant towards the outside, as shown in FIG. 6, in order to allow manual or automatic installation of the products P on the bottom 10 at a filling station. In order not to hinder the subsequent filling operation, the external edges 172 and 182 of the sheets have external faces slightly fixed against the external faces of the walls 11 and 12 by means, for example, of small adhesive spots 112 and 122 previously deposited in same time as the lines of glue 111,121,131 and 141, or small tapes, preferably removable, double-sided adhesive, or the like. After depositing the products P on the bottom 10, the sheets 17 and 18 are folded over the products and the edges 172 and 182 overlap on the products so that the packaging thus formed enters a heat shrinking oven known to heat seal the second edges of the sheet 172 and 182 and to heat shrink the sheets 17 and 18 against the products P and press them against the bottom 10. Preferably, the heat-shrinkable film used is a plastic polymer, such as polyethylene, polypropylene or polyalkylene, and is mono-oriented, although it can be bi-oriented, so that the sheets 17 and 18 offer a main direction of retraction above the products, longitudinal and perpendicular to the walls 11 and 12. The packaging 1 is thus ready during shipment and can be, if desired, overwrapped by insertion into a flap box of the American box type, or by styling by a semi-American box.

Selon une variante du procédé précédant, le pivotement et l'application des rabats 13 et 14 contre les parois 11 et 12 peuvent intervenir lorsque le flan 1a est à plat, avant l'opération de formage consistant en le dressage des parois.According to a variant of the preceding method, the pivoting and the application of the flaps 13 and 14 against the walls 11 and 12 can take place when the blank 1a is flat, before the forming operation consisting in straightening the walls.

Selon encore une autre variante de procédé précédent, l'emballage est d'abord formé dans un poste de formage où les parois 11 et 12 et les rabats 13 et 14 sont dressés verticalement, comme montré à la Fig. 5, puis l'emballage a ses parois dressées encollées en 111, 121, 131 et 141, reçoit des extrémités de film 131 et 132 de deux dérouleurs de film qui sont collées sur les rabats, et a ses rabats 13 et 14 rabattus de 90°; ensuite les films sont coupés pour libérer les deux feuilles tombant dans l'emballage.According to yet another variant of the preceding process, the packaging is first formed in a forming station where the walls 11 and 12 and the flaps 13 and 14 are erected vertically, as shown in FIG. 5, then the packaging has its erect walls glued at 111, 121, 131 and 141, receives ends of film 131 and 132 from two film unwinders which are col lées on the flaps, and has its flaps 13 and 14 folded 90 ° ; then the films are cut to release the two sheets falling into the package.

Le procédé illustré n'a été présenté qu'à titre d'exemple, et d'autres procédés peuvent être déduits de ce dernier, notamment en combinant selon des ordres différents les différentes étapes opératoires. En particulier, le flan 1 a avec des feuilles 17 et 18 découpées et fixées aux rabats 13 et 14, et éventuellement fixées aux faces de dessous et externes des parois 11 et 12, peut être fabriqué tel quel par un cartonnier, et introduit à l'entrée d'une formeuse d'un utilisateur désirant réaliser l'emballage. Le flan préparé peut offrir des rabats 13 et 14 fixés aux faces de dessus et internes des parois 11 et 12. Un tel flan peut être également un flan de caisse ou barquette plié et aplati.The process illustrated has only been presented by way of example, and other processes can be deduced therefrom, in particular by combining the different operating steps in different orders. In particular, the blank 1 a with sheets 17 and 18 cut and fixed to the flaps 13 and 14, and optionally fixed to the underside and outer faces of the walls 11 and 12, can be manufactured as is by a cardboard box, and introduced into the entry of a forming machine for a user wishing to make the packaging. The prepared blank can offer flaps 13 and 14 fixed to the top and internal faces of the walls 11 and 12. Such a blank can also be a folded and flattened box or tray blank.

Selon une autre variante illustrée à la Fig. 7, au lieu que les bordures de feuille 171 et 181 soient logées entre les faces internes en regard des parois 11 et 12 et des rabats repliés 13 et 14, ou de petites plaques 133 et 143, les bordures transversales 171 et 181 des feuilles 17 et 18 sont noyées dans la structure même des rabats 13 et 14 respectivement, lors de la fabrication du flan de carton 1a. Selon la structure du carton utilisé, les bordures de feuilles 171 et 181 sont emprisonnées respectivement entre des faces en regard de deux feuilles de carton 135, 136 et 145, 146 pour un carton duplex ou simple face, ou entre des faces en regard de l'une de deux feuilles de cartonnette et d'une feuille cartonnée à cannelures pour un carton ondulé double face ou double double face, ou entre des faces en regard de deux quelconques feuilles de carton pour un carton multi- feuille. Dans tous les cas, la face interne 135, 145 du rabat 13, 14 est toujours appliquée contre la face interne de la paroi correspondante 11, 12 et fixée à celle-ci. Par ailleurs, on notera dans la Fig. 7, que le carton est un carton ondulé; bien que des ondulations soient présentées horizontalement, ces ondulations sont en pratique et selon l'invention orientées verticalement, comme indiqué par la double flèche F dans la Fig. 2.According to another variant illustrated in FIG. 7, instead of the sheet borders 171 and 181 being housed between the internal faces opposite the walls 11 and 12 and the folded flaps 13 and 14, or of small plates 133 and 143, the transverse borders 171 and 181 of the sheets 17 and 18 are embedded in the structure of the flaps 13 and 14 respectively, during the production of the cardboard blank 1a. Depending on the structure of the cardboard used, the edges of the sheets 171 and 181 are trapped respectively between facing faces of two sheets of cardboard 135, 136 and 145, 146 for a duplex or single-sided cardboard, or between faces facing the one of two sheets of cardboard and a corrugated cardboard sheet for a double-sided or double double-sided corrugated cardboard, or between facing faces of any two sheets of cardboard for a multi-sheet cardboard. In all cases, the internal face 135, 145 of the flap 13, 14 is always applied against the internal face of the corresponding wall 11, 12 and fixed thereto. Furthermore, it will be noted in FIG. 7, that the cardboard is a corrugated cardboard; although undulations are presented horizontally, these undulations are in practice and according to the invention oriented vertically, as indicated by the double arrow F in FIG. 2.

D'autres emballages ayant des agencements de parois, fond et rabats peuvent être utilisés pour mettre en oeuvre l'invention. Quelques types de ces emballages sont décrits ci-dessous. Ces divers emballages sont désignés par des chiffres respectifs, et les différentes parties de chacun de ces emballages sont désignées par un nombre dont le premier chiffre désigne l'emballage lui-même et dont le ou les chiffres suivants sont identiques à ceux désignant des parties analogues de l'emballage 1 montré à la Fig. 1.Other packages having wall, bottom and flap arrangements can be used to implement the invention. Some types of these packages are described below. These various packages are designated by respective numbers, and the different parts of each of these packages are designated by a number, the first digit of which designates the package itself and the following digit or digits of which are identical to those designating similar parts. of the package 1 shown in FIG. 1.

En référence à la Fig. 8, un emballage 2 est une caisse parallélépipédique ou cubique, du type caisse américaine, offrant un fond 20, deux premières parois parallèles 21 et 22 et deux secondes parois parallèles 291 et 292. Deux rabats de fixation supérieurs 23 et 24 prolongeant les parois 21 et 22 et délimités par rapport à celles-ci par des lignes de rainage sont rabattus à 180° à l'intérieur de la caisse 2 et contre les faces internes des faces 21 et 22 pour enserrer avec celles-ci des bordures 271 et 281 de deux feuilles plastiques rétractables 27 et 28 propres à se chevaucher et à être thermorétractées au dessus de produits P posés à l'intérieur sur le fond 20.With reference to FIG. 8, a package 2 is a parallelepipedic or cubic box, of the American box type, offering a bottom 20, two first parallel walls 21 and 22 and two second parallel walls 291 and 292. Two upper fixing flaps 23 and 24 extending the walls 21 and 22 and delimited with respect to these by crease lines are folded 180 ° inside the body 2 and against the internal faces of the faces 21 and 22 to enclose therewith edges 271 and 281 of two retractable plastic sheets 27 and 28 suitable for overlapping and being heat-shrunk above products P placed inside on the bottom 20.

Accessoirement, deux seconds rabats supérieurs 293 et 294 prolongeant les secondes parois 291 et 292 délimités par rapport à celles-ci par des lignes de rainage peuvent être prévus pour fermer la caisse et protéger ainsi les produits P. Les rabats 293 et 294 sont couchés suivant un plan perpendiculaire aux parois de la caisse. Les rabats 293 et 294 peuvent être reliés entre eux par exemple par ruban adhésif, ou maintenu coplanairement par banderolage de la caisse. Selon une autre variante, les seconds rabats 293 et 294 sont remplacés par un couvercle ou coiffe ayant un panneau central analogue au fond et bordé ou non d'un, deux, trois ou quatre rabats appliqués contre des parois respectives 21, 22, 291 et 292 de la caisse.Incidentally, two second upper flaps 293 and 294 extending the second walls 291 and 292 delimited therefrom by creasing lines can be provided to close the box and thus protect the products P. The flaps 293 and 294 are coated according to a plane perpendicular to the walls of the body. The flaps 293 and 294 can be connected together for example by adhesive tape, or held coplanarly by wrapping the box. According to another variant, the second flaps 293 and 294 are replaced by a cover or cover having a central panel similar to the bottom and bordered or not with one, two, three or four flaps applied against respective walls 21, 22, 291 and 292 of the case.

Bien entendu, les différentes variantes de liaisons des premières bordures de feuille déjà décrites en référence notamment aux Fig. 2, 3, 6 et 7 sont applicables à la caisse 2, ou autres emballages 3, 4 et 5 décrits plus loin ou déduits de ceux-ci.Of course, the different variants of connections of the first sheet borders already described with reference in particular to FIGS. 2, 3, 6 and 7 are applicable to the body 2, or other packaging 3, 4 and 5 described below or deducted therefrom.

En particulier pour la variante de la Fig. 3 appliquée à la caisse 2, les petites plaques ou bandes rapportées 133 et 143 peuvent être des panneaux ayant des longueurs et hauteurs respectivement sensiblement égales, ou égales et différentes, de celles de parois 21 et 22, ou des portions d'une ceinture annulaire à section rectangulaire C, appelée également étui, couronne ou tube, telle que montré en traits interrompus à la Fig. 3, appliquée contre les faces internes des quatre parois 21, 291, 22 et 292 de la caisse. La ceinture peut avoir deux parois opposées ayant des hauteurs différentes de celles des deux autres. Le fond 10 de la caisse peut être constitué par un simple panneau en carton, ou par deux rabats, ou par quatre rabats superposés d'une manière classique. Selon une autre variante lors de l'utilisation d'une ceinture C, le fond est issu d'un flan analogue au flan 1 a, mais dépourvu de panneaux extrémaux 13 et 14, et comporte un, deux, trois ou quatre panneaux, tels que 11 et 12, pouvant former parois d'une caisse lorsque ces panneaux ont une hauteur supérieure à celle de la ceinture comme montré à la Fig. 3, ou pouvant former des rabats d'une coiffe inférieure de l'emballage lorsque ces panneaux, comme indiqués en 503 et 504 dans la Fig. 11, ont une hauteur inférieure à celle de la ceinture indiquée en C, 53 et 54 dans la Fig. 11. Pour cette utilisation de la ceinture, la ceinture est d'abord formée, les feuilles sont fixées à la ceinture, et la coiffe est formée et appliquée sur la ceinture contenant les feuilles.In particular for the variant of FIG. 3 applied to the body 2, the small added plates or strips 133 and 143 may be panels having lengths and heights respectively substantially equal, or equal and different, from those of walls 21 and 22, or portions of an annular belt with rectangular section C, also called case, crown or tube, as shown in broken lines in FIG. 3, applied against the internal faces of the four walls 21, 291, 22 and 292 of the box. The belt may have two opposite walls having heights different from those of the other two. The bottom 10 of the box can be constituted by a simple cardboard panel, or by two flaps, or by four flaps superimposed in a conventional manner. According to another variant when using a belt C, the bottom comes from a blank similar to the blank 1a, but devoid of end panels 13 and 14, and comprises one, two, three or four panels, such that 11 and 12, which can form the walls of a box when these panels have a height greater than that of the belt as shown in FIG. 3, or which can form flaps of a lower cover of the packaging when these panels, as indicated in 503 and 504 in FIG. 11, have a height less than that of the belt indicated in C, 53 and 54 in FIG. 11. For this use of the belt, the belt is first formed, the sheets are attached to the belt, and the cap is formed and applied to the belt containing the sheets.

Selon la réalisation montrée à la Fig. 9, un emballage 3 est une barquette 3 ayant un fond 30, deux grandes parois parallèles 31 et 32, deux petites parois parallèles 391 et 392 ayant des hauteurs inférieures à celles des grandes parois 31 et 32, et deux rabats de fixation 33 et 34. Les rabats-33 et 34 sont délimités par des lignes de rainage 35 et 36 définissant des bords supérieurs des parois 31 et 32 et sont rabattus contre les faces internes de celles-ci pour enserrer avec celles-ci des premières bordures transversales 371 et 381 de deux feuilles plastiques rétractables 37 et 38 développées entre les grandes parois 31 et 32. Selon une autre variante, les rabats 33 et 34 sont remplacés par des rabats délimités par des lignes de rainage définissant des bords supérieurs des petites parois 391 et 392 et sont rabattus contre les faces internes de celles-ci pour enserrer avec celles-ci des bordures de deux feuilles plastiques rétractables.According to the embodiment shown in FIG. 9, a package 3 is a tray 3 having a bottom 30, two large parallel walls 31 and 32, two small parallel walls 391 and 392 having heights lower than those of the large walls 31 and 32, and two fixing flaps 33 and 34 The flaps-33 and 34 are delimited by creasing lines 35 and 36 defining upper edges of the walls 31 and 32 and are folded against the internal faces of these to enclose with them first transverse edges 371 and 381. of two plasti sheets ques retractables 37 and 38 developed between the large walls 31 and 32. According to another variant, the flaps 33 and 34 are replaced by flaps delimited by creasing lines defining upper edges of the small walls 391 and 392 and are folded against the internal faces thereof to enclose therewith the edges of two shrinkable plastic sheets.

Selon une autre variante de barquette 4 montrée à la Fig. 10, des premières bordures 471 et 481 de deux feuilles plastiques rétractables 47 et 48 sont enserrées entre les faces internes de petites parois 41 et 42 d'une part, et des faces externes de paires de prolongements ou débords latéraux de renforcement 43 et 44 de hautes parois 491 et 492, d'autre part, les débords étant pliés perpendiculairement aux hautes parois vers l'intérieur de la barquette 4 et appliqués respectivement contre des extrémités longitudinales des faces internes des petites parois. Une variante analogue à la précédente, consiste à enserrer les premières bordures 471 et 481 de deux feuilles 47 et 48 entre les faces internes des hautes parois d'une barquette d'une part, et des faces externes de paires de prolongements ou débords latéraux de renforcement des petites parois, d'autre part, les débords étant pliés perpendiculairement aux petites parois vers l'intérieur de la barquette et appliqués respectivement contre des extrémités longitudinales des faces internes des hautes parois. Pour ces deux variantes, les feuilles 47 et 48 passent entre les chants inférieurs, tels que 430 et 440, des débords et le fond, les débords jouant une fonction analogue aux rabats des réalisations précédentes vis-à-vis de la fixation des premières bordures des feuilles plastiques.According to another variant of tray 4 shown in FIG. 10, first edges 471 and 481 of two retractable plastic sheets 47 and 48 are sandwiched between the internal faces of small walls 41 and 42 on the one hand, and external faces of pairs of lateral reinforcing extensions or overhangs 43 and 44 of high walls 491 and 492, on the other hand, the overhangs being folded perpendicular to the high walls towards the inside of the tray 4 and applied respectively against longitudinal ends of the internal faces of the small walls. A variant similar to the previous one, consists of enclosing the first edges 471 and 481 of two sheets 47 and 48 between the internal faces of the high walls of a tray on the one hand, and the external faces of pairs of lateral extensions or overhangs of reinforcement of the small walls, on the other hand, the overhangs being folded perpendicular to the small walls towards the inside of the tray and applied respectively against longitudinal ends of the internal faces of the high walls. For these two variants, the sheets 47 and 48 pass between the lower edges, such as 430 and 440, of the overhangs and the bottom, the overflows playing a function similar to the flaps of the previous embodiments with regard to the fixing of the first borders. plastic sheets.

Selon une autre réalisation d'emballage 5 du genre barquette ou caisse, montrée à la Fig. 11, deux premières parois opposées sont chacune essentiellement constituées par un panneau de fixation 53, 54 complètement séparé d'un flan carton constituant le reste de l'emballage lors de la formation de l'emballage. Le flan de carton présente après pliage et formage, un fond 50, deux secondes parois parallèles 591 et 592, deux prolongements, dits également débords extrêmes ou rabats, en trapèze isocèle 503 et 504 du fond 50 dressés perpendiculairement au fond entre les parois 591 et 592, et deux paires de prolongements ou débords extrêmes en trapèze rectangle 51 et 52 des parois 591 et 592 dressées verticalement et perpendiculairement à celles-ci et entre celles-ci. Des premières bordures 571, 581 de deux feuilles plastiques rétractables 57 et 58 sont fixées en partie inférieure de faces externes des panneaux 53 et 54 non en vis-à-vis et respectivement en regard des faces internes des prolongements 503, 51 et 504, 52. Les panneaux 53 et 54 sont rapportés à l'intérieur de l'emballage 5, et les faces externes des panneaux 53 et 54 sont ensuite appliquées contre les faces internes des prolongements respectifs. Les feuilles 57 et 58 émergent à l'intérieur de l'emballage 5, après avoir passé sous des chants inférieurs 530 et 540 des panneaux 53 et 54 et au-dessus du fond 50. Lorsque la hauteur des panneaux 53 et 54 est différente de celle des parois 591 et 592, l'emballage 5 constitue une barquette.According to another packaging embodiment 5 of the tray or crate type, shown in FIG. 11, two first opposite walls are each essentially constituted by a fixing panel 53, 54 completely separated from a cardboard blank constituting the rest of the packaging during the formation of the packaging. The cardboard blank has, after folding and forming, a bottom 50, two second parallel walls 591 and 592, two extensions, also called extreme overhangs or flaps, in isosceles trapezoid 503 and 504 of the bottom 50 erected perpendicular to the bottom between the walls 591 and 592, and two pairs of extreme trapezoidal extensions or overhangs 51 and 52 of the walls 591 and 592 erected vertically and perpendicular to them and between them. First edges 571, 581 of two retractable plastic sheets 57 and 58 are fixed in the lower part of the external faces of the panels 53 and 54 not opposite and respectively opposite the internal faces of the extensions 503, 51 and 504, 52 The panels 53 and 54 are attached to the inside of the package 5, and the external faces of the panels 53 and 54 are then applied against the internal faces of the respective extensions. The sheets 57 and 58 emerge inside the packaging 5, after passing under lower edges 530 and 540 of the panels 53 and 54 and above the bottom 50. When the height of the panels 53 and 54 is different from that of the walls 591 and 592, the packaging 5 constitutes a tray.

Selon une autre variante de la Fig. 11, comme déjà dit en référence à la Fig. 3, les panneaux de fixation 53 et 54 sont ceux d'une ceinture parallélépipèdique C. Dans ce cas, les débords 51 et 52 peuvent être supprimés, et la hauteur des parois 591 et 592 peut être inférieure à celle de la ceinture C. Par exemple, les parois 591 et 592 ont une hauteur égale à celle des rabats 503 et 504 de manière à former une coiffe inférieure 50 à quatre rabats 591, 592, 503 et 504 applicables contre les faces externes de la ceinture constituant les quatre parois de l'emballage.According to another variant of FIG. 11, as already said with reference to FIG. 3, the fixing panels 53 and 54 are those of a parallelepiped belt C. In this case, the overhangs 51 and 52 can be eliminated, and the height of the walls 591 and 592 can be less than that of the belt C. By example, the walls 591 and 592 have a height equal to that of the flaps 503 and 504 so as to form a lower cover 50 with four flaps 591, 592, 503 and 504 applicable against the external faces of the belt constituting the four walls of the 'packaging.

Comme il est connu, chacune des barquettes, ou caisses ouvertes, ou emballages analogues, montrées aux Fig. 9, 10 et 11, est susceptible d'être coiffée par un couvercle ayant par exemple deux panneaux latéraux appliqués par exemple contre des petites parois de barquette. Le panneau central du couvercle au-dessus du fond peut éventuellement s'appuyer sur des entablements prolongeant par pliage supérieur les grandes parois de la barquette, et peut présenter des mortaises coopérant avec des tenons supérieurs des grandes parois de la barquette.As is known, each of the trays, or open cases, or similar packages, shown in Figs. 9, 10 and 11, is capable of being capped by a cover having for example two side panels applied for example against small container walls. The central panel of the cover above the bottom may possibly be supported on entablatures extending by upper folding the large walls of the tray, and may have mortises cooperating with upper tenons of the large walls of the tray.

Claims (24)

1. Packing made of cardboard or similar material, comprising a bottom (10) and two opposited side walls (11, 12), as well as two sheets of shrinkable plastic type (17, 18) intended to cover goods (P) placed on the bottom, characterized in that it comprises two attachments (13, 14) applied against inner faces of the side walls (11, 12) and in that the sheets (17, 18) have first side edges (171, 181) clamped between the attachments (13, 14) and the inner faces of the side walls (11, 12) respectively and are developed between the side walls from the first side edges (171, 181), firstly towards the bottom (10), then wrapping around the attachments (13, 14).
2. Packing according to claim 1, characterized in that the first sheet side edges (171,181) are attached to the faces of the attachments (13, 14) opposite the inner faces of the side walls (11, 12).
3. Packing according to claim 1, characterized in that the first sheet side edges (171, 181) are buried in the structure (135, 135; 145, 146) of the attachments (13, 14).
4. Packing according to claim 1, characterized in that the first sheet side edges (171, 181) are clamped between two sheets (135, 136; 145, 146), such as flat or corrugated cardboard sheet, making up the attachments (13, 14).
5. Packing according to anyone of claims 1 to 4, characterized in that the attachments (13, 14) are fixed to the inner faces of the side walls (11, 12), preferably by bonding (111, 121 and/or 131, 141), stapling or the like.
6. Packing according to anyone of claims 1 to 5, characterized in that the attachments (13, 14) have edges (130, 140) wrapped around by the sheets (17, 18) which are applied on or attached to the inner faces of the side walls (11, 12), or applied on or attached to the inner face of the bottom (10) supporting the goods (P).
7. Packing according to anyone of claims 1 to 6, characterized in that attachments (13, 14) have edges (130, 140) wrapped around by the sheets (17, 18) which have tenons (132, 142) cooperating with mortises (101, 102), made in the bottom (10), or in the side walls (11, 12), or in the junctions (110, 120) of the bottom and the side walls.
8. Packing according to anyone of claims 1 to 7 characterized in that attachments (13, 14) are made of corrugated cardboard having splines (F) substantially perpendicular to the bottom (10).
9. Packing according to anyone of claims 1 to 8, characterized in that attachments are plates (133, 143) inserted against the inner faces of the side walls (11, 12).
10. Packing according to anyone of claims 1 to 8, characterized in that attachments are upper flaps (13, 14) extending the side walls (11, 12) and folded down 180° against the inner faces of the side walls.
11. Packing according to anyone of claims 1 to 8, characterized in that the attachments are opposited panels (133, 143; 54, 55) of a belt (C) inserted between the side walls (11, 12; 503, 504), the belt preferably having a height different from that of the side walls.
12. Packing according to anyone of claims 1 to 11, characterized in that it comprises two second opposited side walls (291, 292; 591, 592) making up an open box.
13. Packing according to claim 12, characterized in that it comprises two second upper flaps (293, 294) extending the second side walls (291, 292), or a cover with or without flap, to close the packing.
14. Packing according to anyone of claims 1 to 11, characterized in that it comprises two second opposited side walls (391, 392; 591, 592) having a height different from that of the first above mentioned walls (31, 32; 503, 504), in order to constitute a punnet (3; 5).
15. Packing according to anyone of claims 1 to 9, characterized in that it comprises two second opposited side walls (491, 492) in order to constitute a box or punnet (4) and in that the attachments are pairs of lateral extensions (43, 44) of the second side walls (491, 492), applied against the ends of the inner faces of the first side walls (41, 42).
16. Packing according to anyone of claims 1 to 9 and 11, characterized in that it comprises two second opposited side walls (591, 592), in that the above mentioned first side walls are constituted by pairs of lateral extension (51, 52) of the second side walls (591, 592), folded perpendicular to them, and in that the attachments are separate inserted panels (53, 54) or the side walls of an inserted belt (C) applied against the inner faces of the pairs of extensions (51, 52) opposite.
17. Packing according to anyone of claims 1 to 9 and 11, characterized in that it comprises two second opposited side walls (591, 592), in that the first side walls consist of two lateral extensions or flaps (503, 504) of the bottom (50) folded perpendicular to it, with which said attachments (53, 54) clamp the first sheet side edges (571, 581), and in that the attachments are separate inserted panels or side walls of an inserted belt (C) applied against the inner faces of the two extensions or flaps (503, 504) of the bottom.
18. Precut and grooved flank made of cardboard or similar material, used to form a packing according to anyone of claims 1 to 17, characterized in that it comprises two sheets of shrinkable plastic type (17,
18), have first side edges (171, 181) attached, preferably by bonding, stapling or the like, on or in separable (133, 143) or no separable (13, 14) portions from the rest (10, 11, 12) of the flank (1 a), acting as attachments.
19. Method for manufacturing a packing according to anyone of claims 1 to 17, characterized in that it chiefly comprises attachment of the first side edges (171, 181) of the sheets (17, 18) on or in portions (13, 14) of a precut and grooved flank (1 a) acting as attachments, application of the attachments (13, 14) against the inner faces of the portions (11, 12) of the flank acting as opposite side walls of the packing (1) so that the sheets (17, 18) are developed from the first side edges (17, 18) in the direction of one or more portions of the flank (10) acting as the bottom of the packing, and shaping of the packing after or before attachment of the sheet side edges and/or application of the attachments.
20. Method according to claim 19, characterized in that, when the attachments (13, 14) are inseparable portions of the flank, their application consists in folding the attachments against the inner faces of the portions (11, 12) of the flank acting as opposited walls of the packing.
21. Method according to claim 19 or 20, characterized in that the attachment of the first side edges (17, 18) consists in incorporating said side edges between two flat or corrugated sheets in the structure of the attachments (13, 14) at manufacture of the latter.
22. Method according to claim 19 or 20, characterized in that the attachments (13, 14) are fixed to the side walls (11, 12) by bonding or staples preferably used to attach the first sheet side edges (171, 181) to the attachments.
23. Method according to anyone of claims 19 to 22, characterized in that the second free side edges of the sheets (172, 182) are substantially fixed against the outer faces of the side walls (11, 12), preferably near (112, 122) the bottom (10) and after the shaping step thereby placing the goods (P) on the bottom.
EP86402273A 1985-10-31 1986-10-13 Package and method for packaging products in cling films Expired EP0225208B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86402273T ATE41393T1 (en) 1985-10-31 1986-10-13 PACKAGING AND PACKAGING METHOD FOR GOODS WRAPPED UNDER SHRINKABLE FILM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8516217 1985-10-31
FR8516217A FR2589444B1 (en) 1985-10-31 1985-10-31 PACKAGING AND METHOD FOR PACKAGING PRODUCTS UNDER RETRACTABLE SHEETS

Publications (2)

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EP0225208A1 EP0225208A1 (en) 1987-06-10
EP0225208B1 true EP0225208B1 (en) 1989-03-15

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EP86402273A Expired EP0225208B1 (en) 1985-10-31 1986-10-13 Package and method for packaging products in cling films

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EP (1) EP0225208B1 (en)
AT (1) ATE41393T1 (en)
DE (1) DE3662377D1 (en)
ES (1) ES2008036B3 (en)
FR (1) FR2589444B1 (en)
WO (1) WO1987002644A1 (en)

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EP0645309A1 (en) 1993-09-29 1995-03-29 Savoye Nouvelle Société Anonyme dite SAVOYE N.S.A. Method and apparatus for adapting the height of a package to the height of its contents and cutting device therefor
DE102006003318A1 (en) * 2006-01-23 2007-08-02 Electrolux Home Products Corporation N.V. Transport and / or storage device for goods to be transported and / or stored

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FR2625173B1 (en) * 1987-12-29 1990-06-22 Socar PACKAGING FOR RETRACTABLE PLASTIC FILM PACKAGING OF AT LEAST ONE OBJECT
FR2659292B1 (en) * 1990-03-12 1992-08-14 Otor Sa CARTON PACKAGE OR SIMILAR MATERIAL FOR A PLURALITY OF OBJECTS, BLANK FOR FABRICATING BY SAID PACKAGE AND METHOD FOR MANUFACTURING SAID BLANK.
FI105543B (en) * 1993-10-12 2000-09-15 Pussikeskus Oy Paper Packing Box
FR2726253B1 (en) * 1994-10-26 1996-12-13 Schneider Electric Sa PACKAGING CONTAINER FOR TRANSFER, STORAGE AND SHIPPING OF PRODUCTS
FR2737473B1 (en) * 1995-08-04 1997-08-29 Rochette Cenpa COLLAPSIBLE PACKAGING CASE WITH HEAT SHRINK FILM
FR2754518B1 (en) 1996-10-11 1998-12-24 Otor Sa PACKAGING, METHOD AND DEVICE FOR PACKAGING AN ARTICLE OR A LOT OF ITEMS OF UNDERMINED VOLUME
FR2759672B1 (en) * 1997-02-20 1999-05-14 Otor Sa BOX AND FLAN FOR PACKAGING AN ARTICLE OR A LOT OF ITEMS OF INDETERMINARY VOLUME
FR2762586B1 (en) 1997-04-24 1999-07-16 Otor Sa PACKAGING, BLANK ASSEMBLY, METHOD AND DEVICE FOR PACKAGING AN ARTICLE OR A LOT OF ARTICLES OF UNDERMINED VOLUME
FR2853885B1 (en) * 2003-04-15 2006-08-25 Smurfit Socar Sa PACKAGING OF A SEMI-RIGID MATERIAL, COMPRISING TWO SHEETS OF A SOFT MATERIAL, INTENDED TO HOLD IN POSITION OF CONDITIONED OBJECTS
FR2854379B1 (en) 2003-04-29 2005-07-15 Savoye Logistics PRODUCT PACKAGING SYSTEM WITH RETRACTABLE FILM SETTING
FR2971490B1 (en) * 2011-02-15 2014-04-04 Ds Smith Kaysersberg COMBINED PACKAGING
FR3008684B1 (en) 2013-07-16 2015-08-21 Smurfit Kappa France PACKAGING COMPRISING AN ELEMENT IN SEMI RIGID MATERIAL AND A THERMORETRACTABLE FILM.
CN108163313A (en) * 2018-01-04 2018-06-15 苏州万国纸业包装有限公司 A kind of tight lock packing case

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* Cited by examiner, † Cited by third party
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DE1776769U (en) * 1958-08-09 1958-10-30 Erwin Ramisch PACKAGING BAGS MADE PREFERABLY FROM TUBULAR FILM MATERIAL.
US3226236A (en) * 1964-03-12 1965-12-28 Kitchens Of Sara Lee Inc Method of forming a food package
FR2426620A1 (en) * 1978-05-23 1979-12-21 Avon Prod Inc Multiple item packing for cosmetics - uses plastic sheets attached to opposite edges of stiffening material and shrunk after welding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0645309A1 (en) 1993-09-29 1995-03-29 Savoye Nouvelle Société Anonyme dite SAVOYE N.S.A. Method and apparatus for adapting the height of a package to the height of its contents and cutting device therefor
DE102006003318A1 (en) * 2006-01-23 2007-08-02 Electrolux Home Products Corporation N.V. Transport and / or storage device for goods to be transported and / or stored
DE102006003318B4 (en) * 2006-01-23 2013-04-25 Electrolux Home Products Corporation N.V. Transport and / or storage device for goods to be transported and / or stored

Also Published As

Publication number Publication date
ATE41393T1 (en) 1989-04-15
DE3662377D1 (en) 1989-04-20
EP0225208A1 (en) 1987-06-10
ES2008036B3 (en) 1992-12-01
FR2589444B1 (en) 1988-01-15
FR2589444A1 (en) 1987-05-07
WO1987002644A1 (en) 1987-05-07

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