EP1200270A1 - Element d'emballage a marquage imprime, son utilisation, et procede de fabrication - Google Patents

Element d'emballage a marquage imprime, son utilisation, et procede de fabrication

Info

Publication number
EP1200270A1
EP1200270A1 EP00949608A EP00949608A EP1200270A1 EP 1200270 A1 EP1200270 A1 EP 1200270A1 EP 00949608 A EP00949608 A EP 00949608A EP 00949608 A EP00949608 A EP 00949608A EP 1200270 A1 EP1200270 A1 EP 1200270A1
Authority
EP
European Patent Office
Prior art keywords
marking
printed
packaging
face
film
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.)
Granted
Application number
EP00949608A
Other languages
German (de)
French (fr)
Other versions
EP1200270B1 (en
Inventor
Eric Fresnel
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.)
Sleever International Co SA
Original Assignee
Sleever International Co SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sleever International Co SA filed Critical Sleever International Co SA
Publication of EP1200270A1 publication Critical patent/EP1200270A1/en
Application granted granted Critical
Publication of EP1200270B1 publication Critical patent/EP1200270B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/142—Security printing using chemical colour-formers or chemical reactions, e.g. leuco-dye/acid, photochromes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
    • B41M5/0353—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic using heat shrinkable film material; Thermotransfer combined with the shaping of the workpiece; Recto-verso printing; Image correction

Definitions

  • the present invention relates to the packaging of objects or groups of objects by means of a packaging element with printed marking, the wall of which is made of plastic.
  • the term "element" of packaging used here must be understood in its broadest acceptance, including in particular rigid or semi-rigid containers (bottles, shells, boxes) and flexible films, in particular heat-shrinkable films.
  • the extensive development of distribution channels poses more and more problems for packaging professionals who must fight against the diversion of products, whether pharmaceuticals, perfumes, or food products in particular Large manufacturers Indeed, they often have exclusive distributors, and it appeared that certain distributors resold part of their stock at low prices, which allows a fraudulent reintroduction of products at low prices.
  • Traceability is used to uniquely identify the individual product at several points, and considerably facilitates data management.
  • fraudulent manipulations on the products make it necessary to provide markings, in particular codings, which must be as discreet as possible, in order to to preserve the traceability of the products, and thus to avoid any modification or destruction of packaging.
  • We have thus developed different reading modes for example by interlaced bar codes ("two out of five") or other codes, or by electronic chips, which can be read by a suitable reading machine owned by the manufacturer or the distributor.
  • these codes are generally easily spotted by counterfeiters, and as a result can be removed or torn off.
  • the technical problem which the invention proposes to solve is to create a concept of marking on the plastic packaging element making it possible to avoid the identification of the code or codes used, in order to preserve them from destruction, while guaranteeing the identification and traceability of packaged products.
  • document US-A-4 227 719 thus describes a copy protection technique, according to which an alert pattern is printed directly on the document and covered with a camouflage printed with an ink whose density is chosen below the critical threshold of the photocopier, so that any photocopy d protected document automatically displays the alert reason on the copy
  • the object of the invention is therefore to produce a packaging element with printed marking, the wall of which is made of plastic material, either essentially transparent, or tinted in the mass, and the marking of which is not identifiable, while being able to be easily read by authorized persons with a suitable reading medium, which guarantees product identification and traceability
  • the primary dispersing screen makes it possible to avoid the marking of the marking, even under low-light, and if the examination is carried out on the other side of the film, then the overprinting dispersing screen performs the same anti-tracking function.
  • the packaging element according to the invention comprises on one face of said wall a marking printed with a sympathetic ink, said marking being sandwiched between said face on which said marking is printed, and a dispersing weft overprinting covering this marking and at least the area of said face which surrounds said marking, to make the latter undetectable
  • the opacity of the tinted wall in the mass is sufficient to mask the marking, and if one examines said marking by the other face, the dispersing screen overprinting avoids the marking of the marking, even by examination under a grazing light.
  • the or each dispersing frame has a speckled structure which takes up the structure used to print the marking. The structure then makes it possible to drown the area of the marking, reinforcing the invisibility.
  • the or each dispersing screen will be chosen random, so as to avoid identification by fine analysis of the surface. It is also advantageous to provide that the marking printed with a sympathetic ink overlaps at least in part with the printed identification elements. on the same side This makes it easier to detect any intervention in the marking area, which would alter identification elements, rendering then the unsaleable product when it concerns for example legal notices indicating the origin, the name or the composition of the product.
  • the sympathetic ink used for marking appears only under the action of a chemical reagent chosen to have an irreversible destructive action on the wall of the element. Indeed, any attempt to intervene in the marking area has the effect of irreversibly destroying the area of the wall, which is immediately identifiable even by a consumer of average attention. Protection can be further refined by providing that the chemical reagent is chosen to have a destructive action delayed on the wall of the element Indeed, the destructive action will only appear very after the intervention carried out by the counterfeiter
  • the packaging element includes an additional marking readable under UV light, separate from the marking printed in sympathetic ink.
  • the additional marking is printed on the face opposite to that which bears the marking. in sympathetic ink
  • the face carrying the marking in sympathetic ink as well as the dispersing screen (s) is the internal face, that is to say the face which is turned towards the object or group of objects. to pack Indeed, this forces the counterfeiter to cut the wall surrounding the object or the group of packaged objects to intervene by trying to destroy the marking present on the internal face of said wall.
  • the marking in sympathetic ink is a coding serving to guarantee the identification and the traceability of the object or group of packaged objects.
  • coding must be taken here in its broadest sense, in accordance with the most modern possibilities of data encryption
  • the wall of the plastic packaging element may be rigid or semi-rigid, and form a container, in particular a bottle, a shell (blister), or a box.
  • the wall of the plastic packaging element may be flexible and to form a packaging film, in particular a heat-shrinkable and mono-oriented film. This is particularly advantageous when such a material is used. film to form heat shrinkable packaging sleeves
  • the invention also intends to protect a heat-shrinkable packaging sleeve, which is produced from a section of heat-shrinkable and monooriented film having at least one of the aforementioned characteristics, film of which two end edges are sealed according to a sleeve generator
  • the method comprises the following successive stages - printing on one face of the film of a primary dispersing screen, printing, on this primary screen, of an ink marking sympathetic, impression of a dispersing frame under pressure on the aforementioned marking
  • the method comprises the following successive steps
  • FIG. 1 schematically illustrates the method of obtaining a packaging element, here in the form of a film, the plastic wall of which is transparent and bears an invisible marking in sympathetic ink according to the invention
  • FIG. 2 illustrates the same steps as in Figure 1, but in schematic sectional view
  • - Figure 3 is a schematic view similar to that of Figure 2, in the case where a film is used whose plastic wall is mass dyed
  • FIG. 4 illustrates different types of structures used to print the marking, and consequently used again to produce the speckled structure constituting the dispersing screen (s),
  • FIG. 5 is a schematic view illustrating an installation implementing a fab ⁇ ca- tion method of a transparent wall packaging film and invisible marking in sympathetic ink according to the inven ⁇ , possibly with an additional marking readable under UV light,
  • FIG. 6 is a perspective view of a heat shrinkable packaging sleeve made from a section of film of the aforementioned type, in accordance with the invention
  • FIG. 1 there is a strip of plastic packaging film 10 whose wall is transparent here
  • the upper face of this wall is denoted 11 and its lower face is denoted 12.
  • the constituent material of this film could for example be chosen from the materials usually used in the packaging field, such as polyethylene, polystyrene, polyvinyl chloride, etc. It will generally be any rigid or semi-rigid plastic material making it possible to produce a box, a shell (blister), or a flexible film.
  • the film 10 carries on its face 11 printed identification elements 13, here shown schematically by the letters A and B.
  • the packaging film 10 is in this case transparent, so that the printed identification elements 13 are perfectly visible from the opposite face 12 which is for example the front of the film.
  • a primary dispersing frame 14 is deposited which has a speckled and random structure.
  • This primary screen 14 is for example printed by means of a screened coating cylinder, for example according to a gravure printing technique or any other technique of screen printing not necessarily using cylinders.
  • the peripheral surface ⁇ that of the cylinder is then etched according to the desired pattern of the random speckled structure.
  • a structure will be chosen which takes up the structure then used to print a marking in sympathetic ink, for example by using dots, crosses, lines, etc.
  • a marking 15 is printed with a sympathetic ink.
  • This marking is, for example, shown schematically here by a sequence of numbers 1,2,3,4.
  • identifying elements may be the brand of the product, or visual elements such as those which are commonly used for example for the legal notices giving the origin or the composition of the product.
  • visual elements such as those which are commonly used for example for the legal notices giving the origin or the composition of the product.
  • the primary dispersing frame 14 is present over the entire area denoted 17 on the face 11 of the film which surrounds the marking 15.
  • a disper ⁇ health frame 16 is superimposed overlaying the marking 15 and at least the aforementioned zone 17 which surrounds said marking, to make the latter undetectable.
  • the marking 15 is thus sandwiched between the two dispersing frames 14,16
  • step c the product obtained in step c
  • step c the product obtained in step c
  • the overprinting dispersing frame 16 also has a speckled structure which takes up the structure used to print the marking 15.
  • a packaging film whose face 11 includes a marking 15 printed with a sympathetic ink, and, in overprint, a dispersing screen 16 covering this marking 15 and at least zone 17 of said face which surrounds said marking, to make the latter undetectable
  • the film is transparent in zone 17 of its face which surrounds marking 15, and it comprises on said face a primary dispersing weft 14 on which the marking 15 is printed, the assembly being covered by the overprinting dispersing frame 16
  • the marking 15 is therefore in this case sandwiched between the primary dispersing frame 14 and the overprinting dispersing frame 16
  • the packaging film comprises a dispersing weft 16 superimposed which is unique, without primary dispersing weft
  • the marking 15 is therefore in this case sandwiched between the face on which said marking is printed and the overprinting dispersing frame 16
  • the marking 15 printed in sympathetic ink overlaps at least in part the printed identification elements 13 This naturally does not constitute an obligation, but further complicates the task of the counterfeiter by rendering practically impossible to preserve the identification elements during a destruction work carried out in the area of the printed marking
  • the protection conferred is further improved if it is provided that the sympathetic ink used for marking 15 only appears under the action of a particular chemical reagent, which is chosen to have an irreversible destructive action on the film II may these are solvent-type developers, for example ketones or esters
  • solvent-type developers for example ketones or esters
  • the film wall then automatically shows traces of destruction that is irreversible, and therefore immediately identifiable later, even by a consumer of average attention.
  • This security can be further refined by providing that the chemical reagent is chosen to have a delayed destructive action on the film. Indeed, the counterfeiter cannot foresee that the solvent will continue its action in the material of which the film is made, and cause irreve traces risk of destruction which will not appear until well after the intervention carried out on the marking
  • FIG. 4 schematically illustrates the visual effect of the structures used to print the marking 15 and the dispersing screen (s) 14, 16.
  • the printed marking 15, here symbolized by the number 1 is printed by successions of small dots. If the film 10 used is transparent, then the face concerned will have been previously coated with the primary dispersing frame 14, also produced with a structure speckled in small dots. As this structure is preferably random, visual identification, even by sophisticated analysis means, will be further complicated. In this case, the primary screen 14 has not been shown, in order to be able to distinguish the figure from the marking 15. After depositing the dispersing screen overprint 16, the cloud of small dots makes it completely impossible to locate the figure 1 previously printed in sympathetic ink, even with an examination in grazing light. In 2) and in 3), the same phenomenon is illustrated with respectively a structure using sequences of crosses, and sequences of lines. These are, of course, only examples, and any other kind of structure could be used with current printing means.
  • the packaging film may also include an additional marking readable under ultraviolet (UV) light, which is separate from the marking 15 printed in sympathetic ink.
  • This additional marking will preferably be printed on the face opposite to that which bears the marking 15 in sympathetic ink.
  • the use of such additional marking further complicates the task of the counterfeiter, who must also intervene with an ad hoc reading to alter this marking. .
  • it succeeds, by depositing a varnish or other adequate chemical, to drown the UV marking in an enlarged area making it impossible to recognize and read this marking there is still the marking printed in sympathetic ink which, meanwhile, cannot be detected thanks to the use of one or two dispersing frames
  • FIG. 5 a method of manufacturing a packaging film in accordance with the invention has been illustrated. It is of course a schematic illustration, aiming only to explain the successive operations carried out on the film.
  • the film 10, possibly previously printed, for example with its previously mentioned printing elements, is here of transparent type.
  • the film 10 first arrives at a station 20 corresponding to the printing of the primary dispersing screen 14 For this, it passes between two rollers 21,22 of which the roller 21 is a screened cylinder, the screening of which is preferably chosen in accordance with the structure used for the subsequent printing of the marking. Although any color can be used, it is preferable to choose a gray or black color already used for printing the printing elements.
  • the film 10 then arrives at a station 30 for printing the marking in sympathetic ink.
  • the device used is shown diagrammatically in 31.11.
  • the printing of the marking in sympathetic ink occurs here on the side 11 or back (V) of the film which is that already coated beforehand with the primary dispersing frame 14
  • a device 32 used to print a UV marking here on the face 12 opposite to that carrying the marking prints in sympathetic ink, that is to say on the front (R) of the film.
  • the film 10 finally passes at a station 40 for printing the overprinting dispersing screen 16.
  • the film 10 thus passes between two rollers 41 and 42, the roller 41 of which is a screened cylinder analogous to cylinder 21. used at the level of station 20.
  • This deposition of the dispersing frame 16 in overprinting is fundamental, because it is it which makes it possible to sandwich the marking produced in sympathetic ink, and thus to make said marking undetectable.
  • the packaging film can be a heat-shrinkable and monoriented film. This is particularly advantageous when using such a film to conform heat-shrinkable packaging sleeves. Illustrated in Figure 6 such a heat shrinkable packaging sleeve which will now be described in more detail.
  • a heat shrinkable sleeve 50 is thus distinguished, produced from a section of film 10 or 10 ′, coated with the abovementioned prints and screens, two end edges of which are sealed according to a generatrix of the sleeve, at the level of a sealing line denoted 51.
  • a UV marking 18 On the outer face 12 of the sleeve, the presence of a UV marking 18 will be noted, here diagrammed by the figures 1,2,3,4.
  • the film constituting the sleeve 50 bearing the marking in sympathetic ink 15 and the dispersing screens 14, 16 is entirely transparent. It goes without saying that it will be possible to provide that the face 11 of said sleeve. bearing the marking in sympathetic ink 15 and the single dispersing weft overprinted 16 is tinted in the mass, in which case only one dispersing screen is used (superimposed on the marking in sympathetic ink)
  • the marking in sympathetic ink 15 will be a coding serving to guarantee the identification and the traceability of the object or group of objects packaged.
  • the recipient has the ad hoc developer, and he knows the location of the coding printed in nice ink so it can easily read the coding
  • the plastic packaging element is not a flexible film, but has a rigid or semi-rigid wall, forming a container, in particular a bottle. , a shell (in particular a blister) or a box
  • a shell in particular a blister
  • a box in particular a blister
  • the invention is not limited to the embodiment which has just been described, but on the contrary encompasses any variant incorporating, with equivalent means, the essential characteristics set out above.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Wrappers (AREA)
  • Printing Methods (AREA)
  • Packages (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Bag Frames (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

The invention relates to a packaging element with printed marking, and in which the wall of the element is made out of plastics material. According to the invention, for a wall that is essentially transparent, the packaging element (10) comprises on one of its faces (11) marking (15) which is printed with sympathetic ink, and said marking (15) is sandwiched between a primary dispersing screen (14) deposited on said face and on which said marking is printed, and a dispersing screen (16) overprinted thereon so as to cover the marking (15) and at least the zone (17) of said face surrounding said marking so as to make the marking undetectable. Such a packaging element can be made in particular in the form of a film, specifically for making heat-shrink packaging sleeves, or in the form of a container, in particular a bottle, a blister, or a box.

Description

ELEMENT D'EMBALLAGE A MARQUAGE IMPRIME, SON UTILISATION, ET PROCEDE DE FABRICATIONPACKAGING ELEMENT WITH PRINTED MARKING, USE THEREOF, AND MANUFACTURING METHOD
La présente invention concerne l'emballage d'objets ou de groupe d'objets au moyen d'un élément d'emballage à marquage imprimé, dont la paroi est réalisée en matière plastique. Le terme "élément" d'emballage utilisé ici doit être compris dans son acceptation la plus large, englobant notamment les conteneurs rigides ou semi- πgides (flacons, coques, boîtes) et les films souples notamment les films thermorétractables . Le développement extensif des circuits de distribution pose de plus en plus de problèmes aux professionnels de l'emballage qui doivent lutter contre le détournement des produits, qu'il s'agisse de produits pharmaceutiques, de parfums, ou de produits alimentaires notamment Les grands fabricants ont en effet souvent des distributeurs exclusifs, et il est apparu que certains distributeurs revendaient une partie de leur stock à vil prix, ce qui permet une réintroduction frauduleuse des produits à bas prix. Ce problème est encore compliqué par la circulation des marchandises avec les problèmes transfontaliers, les réglementations légales et fiscales étant souvent différentes selon les pays. Ces mouvements ont bien entendu pour effet de déstabiliser les distributeurs et les fabricants Pour lutter contre cette pratique dite des marchés "gris" ou "parallèles", qui prend des proportions inquiétantes depuis quelques années, il est apparu indispensable de développer des concepts de traçabilité des produits.The present invention relates to the packaging of objects or groups of objects by means of a packaging element with printed marking, the wall of which is made of plastic. The term "element" of packaging used here must be understood in its broadest acceptance, including in particular rigid or semi-rigid containers (bottles, shells, boxes) and flexible films, in particular heat-shrinkable films. The extensive development of distribution channels poses more and more problems for packaging professionals who must fight against the diversion of products, whether pharmaceuticals, perfumes, or food products in particular Large manufacturers Indeed, they often have exclusive distributors, and it appeared that certain distributors resold part of their stock at low prices, which allows a fraudulent reintroduction of products at low prices. This problem is further complicated by the movement of goods with cross-border problems, legal and tax regulations often being different in different countries. These movements have of course the effect of destabilizing distributors and manufacturers To combat this practice known as "gray" or "parallel" markets, which has taken on worrying proportions in recent years, it appeared essential to develop concepts of traceability of products.
La traçabilité sert à identifier le produit individuel en plusieurs points de façon unique, et facilite considérablement la gestion des données Toutefois, les manipulations frauduleuses sur les produits obligent a prévoir des marquages, en particulier des codages, qui doivent être aussi discrets que possible, afin de préserver la traçabilité des produits, et ainsi d'éviter toute modification ou destruction des emballages . On a ainsi développé différents modes de lecture, par exemple par codes à barres ("deux parmi cinq") entrelacés ou autres codes, ou par puces électroniques, qui peuvent être lus par une machine de lecture adaptée que possède le fabricant ou le distributeur. Malheureusement, ces codes sont en général aisément repérés par les contrefacteurs, et par suite peuvent être enlevés ou arrachés. Lorsque l'on utilise des conteneurs ou des films d'emballage, ou encore des manchons thermorétractables réalisés à partir de tels films, on fait en général en sorte que le codage soit imprimé sur la face interne de l'élément d'emballage, c'est-à-dire la face qui est tournée vers l'objet. Cependant, un contrefacteur avisé peut aisément découper l'élément d'emballage en matière plastique, et ainsi accéder à la face interne de celui-ci pour dénaturer ou effacer le codage imprimé.Traceability is used to uniquely identify the individual product at several points, and considerably facilitates data management. However, fraudulent manipulations on the products make it necessary to provide markings, in particular codings, which must be as discreet as possible, in order to to preserve the traceability of the products, and thus to avoid any modification or destruction of packaging. We have thus developed different reading modes, for example by interlaced bar codes ("two out of five") or other codes, or by electronic chips, which can be read by a suitable reading machine owned by the manufacturer or the distributor. Unfortunately, these codes are generally easily spotted by counterfeiters, and as a result can be removed or torn off. When using containers or packaging films, or heat-shrinkable sleeves made from such films, it is generally done so that the coding is printed on the internal face of the packaging element, c that is to say the face which is turned towards the object. However, a knowledgeable counterfeiter can easily cut the plastic packaging element, and thus access the internal face of the latter to distort or erase the printed coding.
Le problème technique que l'invention se propose de résoudre est de créer un concept de marquage sur l'élément d'emballage en matière plastique permettant d'éviter le repérage du ou des codes utilisés, afin de les préserver de la destruction, tout en garantissant l'identification et la traçabilité des produits emballés .The technical problem which the invention proposes to solve is to create a concept of marking on the plastic packaging element making it possible to avoid the identification of the code or codes used, in order to preserve them from destruction, while guaranteeing the identification and traceability of packaged products.
On pourrait être tenté d'utiliser des techniques déjà utilisées sur des emballages en papier ou en carton, par exemple en imprimant un codage avec une encre sympathique, c'est-à-dire un liquide incolore servant à écrire un texte secret ou un encodage crypté n'apparaissant que sous l'action de la chaleur ou d'un réactif. Une telle encre est également utilisée dans le domaine de 1 ' authentification de documents : le document US-A-4 227 719 décrit ainsi une technique de protection anti-photocopie, selon laquelle on utilise un motif d'alerte imprimé directement sur le document et recouvert d'un camouflage imprimé avec une encre dont la densité est choisie en-dessous du seuil critique du photocopieur, de sorte que toute photocopie d document protégé fasse automatiquement apparaître le motif d'alerte sur la copieOne might be tempted to use techniques already used on paper or cardboard packaging, for example by printing a coding with a sympathetic ink, that is to say a colorless liquid used to write a secret text or an encoding encrypted appearing only under the action of heat or a reagent. Such ink is also used in the field of document authentication: document US-A-4 227 719 thus describes a copy protection technique, according to which an alert pattern is printed directly on the document and covered with a camouflage printed with an ink whose density is chosen below the critical threshold of the photocopier, so that any photocopy d protected document automatically displays the alert reason on the copy
On rencontre cependant alors une difficulté peu aisée à surmonter, qui est inhérente au fait que le dépôt d'une encre sympathique sur la face d'une paroi en matière plastique, qu'elle soit rigide, semi-rigide ou souple, reste visible à l'oeil nu, en particulier lorsqu'il est vu en lumière rasante (ou incidente) Par suite, même si le codage crypté ne peut pas être lu immédiatement par le contrefacteur, celui-ci peut aisément repérer son emplacement, et par suite effectuer un travail de destruction sur la zone concernée par 1 ' impression du codage en encre sympathique Cette difficulté ne se rencontrait pas avec des produits en papier ou en carton, car les fibres cellulosiques permettaient une bonne absorption des pigments de l'encre sympathique, ce qui rendait 1 ' impression invisibleHowever, there is then an difficulty which is not easy to overcome, which is inherent in the fact that the deposition of a sympathetic ink on the face of a plastic wall, whether rigid, semi-rigid or flexible, remains visible at the naked eye, in particular when it is seen in grazing (or incident) light As a result, even if the encrypted coding cannot be read immediately by the counterfeiter, the latter can easily locate its location, and consequently perform destruction work on the area concerned by printing the coding in sympathetic ink This difficulty was not encountered with paper or cardboard products, because the cellulose fibers allowed good absorption of the pigments of the sympathetic ink, which made the impression invisible
L'invention a ainsi pour objet de réaliser un élément d'emballage à marquage imprimé dont la paroi est en matière plastique, soit essentiellement transparente, soit teintée dans la masse, et dont le marquage n'est pas reperable, tout en pouvant être aisément lu par les personnes autorisées disposant d'un moyen de lecture adapté, ce qui permet de garantir l'identification et la traçabilité des produitsThe object of the invention is therefore to produce a packaging element with printed marking, the wall of which is made of plastic material, either essentially transparent, or tinted in the mass, and the marking of which is not identifiable, while being able to be easily read by authorized persons with a suitable reading medium, which guarantees product identification and traceability
Ce problème est résolu conformément à l'invention, dans le cas d'une paroi de l'élément d'emballage qui est réalisée en matière plastique essentiellement transparente, grâce à un élément comportant sur une face de ladite paroi un marquage imprimé avec une encre sympathique, ledit marquage étant pris en sandwich entre une trame dispersante primaire déposée sur ladite face et sur laquelle ledj-t marquage est imprime, et une crame dispersante en surimpression recouvrant ce marquage et au moins la zone de ladite face qui entoure ledit marquage pour rendre ce dernier indécelable.This problem is solved in accordance with the invention, in the case of a wall of the packaging element which is made of essentially transparent plastic material, by virtue of an element comprising on one face of said wall a marking printed with an ink sympathetic, said marking being sandwiched between a primary dispersing frame deposited on said face and on which the ledj-t marking is printed, and a dispersing cream overprint covering this marking and at least the area of said face which surrounds said marking to render this last undetectable.
Dans ce cas, si l'on examine le film du côté opposé au marquage, la trame dispersante primaire permet d'éviter le repérage du marquage, et ce même sous lumière rasante, et si l'examen est effectué par l'autre côté du film, alors la trame dispersante en surimpression assure la même fonction d' anti-repérage .In this case, if the film is examined on the side opposite to the marking, the primary dispersing screen makes it possible to avoid the marking of the marking, even under low-light, and if the examination is carried out on the other side of the film, then the overprinting dispersing screen performs the same anti-tracking function.
En variante, dans le cas d'une paroi de l'élément d'emballage qui est réalisée en matière plastique teintée dans la masse, l'élément d'emballage selon l'invention comporte sur une face de ladite paroi un marquage imprimé avec une encre sympathique, ledit marquage étant pris en sandwich entre ladite face sur laquelle ledit marquage est imprimé, et une trame dispersante en surimpression recou- vrant ce marquage et au moins la zone de ladite face qui entoure ledit marquage, pour rendre ce dernier indécelableAlternatively, in the case of a wall of the packaging element which is made of mass-dyed plastic, the packaging element according to the invention comprises on one face of said wall a marking printed with a sympathetic ink, said marking being sandwiched between said face on which said marking is printed, and a dispersing weft overprinting covering this marking and at least the area of said face which surrounds said marking, to make the latter undetectable
Ainsi, si l'on examine le film du côté opposé au marquage, l'opacité de la paroi teintée dans la masse est suffisante pour masquer le marquage, et si l'on examine ledit marquage par l'autre face, la trame dispersante en surimpression permet d'éviter le repérage du marquage, même par examen sous une lumière rasante.Thus, if one examines the film on the side opposite to the marking, the opacity of the tinted wall in the mass is sufficient to mask the marking, and if one examines said marking by the other face, the dispersing screen overprinting avoids the marking of the marking, even by examination under a grazing light.
De préférence, la ou chaque trame dispersante a une structure mouchetée qui reprend la structure utilisée pour imprimer le marquage La structure permet alors de noyer la zone du marquage, en renforçant l'invisibilité. En particulier, la ou chaque trame dispersante sera choisie aléatoire, de façon à éviter un repérage par analyse fine de la surface II est par ailleurs intéressant de prévoir que le marquage imprimé avec une encre sympathique chevauche au moins en partie des éléments d'identification imprimés sur la même face Ceci permet de déceler plus facilement toute intervention dans la zone du marquage, qui viendrait altérer des éléments d'identification, rendant alors le produit invendable lorsqu'il s'agit par exemple de mentions légales indiquant l'origine, le nom ou la composition du produit .Preferably, the or each dispersing frame has a speckled structure which takes up the structure used to print the marking. The structure then makes it possible to drown the area of the marking, reinforcing the invisibility. In particular, the or each dispersing screen will be chosen random, so as to avoid identification by fine analysis of the surface. It is also advantageous to provide that the marking printed with a sympathetic ink overlaps at least in part with the printed identification elements. on the same side This makes it easier to detect any intervention in the marking area, which would alter identification elements, rendering then the unsaleable product when it concerns for example legal notices indicating the origin, the name or the composition of the product.
Le résultat précédent est encore amélioré si l'on prévoit que l'encre sympathique utilisée pour le marquage n'apparaît que sous l'action d'un réactif chimique choisi pour avoir une action destructrice irréversible sur la paroi de l'élément. En effet, toute tentative d'intervention dans la zone du marquage a pour effet de détruire la zone concernée de la paroi de façon irréversible, ce qui est immédiatement repérable même par un consommateur d'attention moyenne La protection peut encore être raffinée en prévoyant que le réactif chimique est choisi pour avoir une action destructrice retardée sur la paroi de l'élément En effet, l'action destructrice n'apparaîtra que très postérieurement à l'intervention effectuée par le contrefacteurThe previous result is further improved if it is provided that the sympathetic ink used for marking appears only under the action of a chemical reagent chosen to have an irreversible destructive action on the wall of the element. Indeed, any attempt to intervene in the marking area has the effect of irreversibly destroying the area of the wall, which is immediately identifiable even by a consumer of average attention. Protection can be further refined by providing that the chemical reagent is chosen to have a destructive action delayed on the wall of the element Indeed, the destructive action will only appear very after the intervention carried out by the counterfeiter
Conformément à une autre caractéristique avantageuse, l'élément d'emballage comporte un marquage supplé- mentaire lisible sous lumière UV, disjoint du marquage imprimé en encre sympathique De préférence alors, le marquage supplémentaire est imprimé sur la face opposée a celle qui porte le marquage en encre sympathiqueIn accordance with another advantageous characteristic, the packaging element includes an additional marking readable under UV light, separate from the marking printed in sympathetic ink. Preferably then, the additional marking is printed on the face opposite to that which bears the marking. in sympathetic ink
Il sera en général avantageux de prévoir que la face portant le marquage en encre sympathique ainsi que la ou les trames dispersantes est la face interne, c'est-à- dire la face qui est tournée vers l'objet ou le groupe d'objets à emballer En effet, ceci oblige le contrefacteur à couper la paroi entourant l'objet ou le groupe d'objets emballé pour intervenir en tentant de détruire le marquage présent sur la face interne de ladite paroi.It will generally be advantageous to provide that the face carrying the marking in sympathetic ink as well as the dispersing screen (s) is the internal face, that is to say the face which is turned towards the object or group of objects. to pack Indeed, this forces the counterfeiter to cut the wall surrounding the object or the group of packaged objects to intervene by trying to destroy the marking present on the internal face of said wall.
Il sera en général intéressant de prévoir que le marquage en encre sympathique est un codage servant a garantir l'identification et la traçabilité de l'objet ou du groupe d'objets emballé Le terme "codage" doit être pris ici dans son sens le plus large, conformément aux possibilités les plus modernes de cryptage de donnéesIt will generally be advantageous to provide that the marking in sympathetic ink is a coding serving to guarantee the identification and the traceability of the object or group of packaged objects. The term "coding" must be taken here in its broadest sense, in accordance with the most modern possibilities of data encryption
La paroi de l'élément d'emballage en matière plastique pourra être rigide ou semi-rigide, et former un conteneur, en particulier un flacon, une coque (blister) , ou une boîteThe wall of the plastic packaging element may be rigid or semi-rigid, and form a container, in particular a bottle, a shell (blister), or a box.
En variante, on pourra prévoir que la paroi de l'élément d'emballage en matière plastique est souple et forme un film d'emballage, en particulier un film thermorétractable et mono-orienté Ceci est tout particulièrement intéressant lorsque l'on utilise un tel film pour constituer des manchons thermorétractables d'emballageAs a variant, provision may be made for the wall of the plastic packaging element to be flexible and to form a packaging film, in particular a heat-shrinkable and mono-oriented film. This is particularly advantageous when such a material is used. film to form heat shrinkable packaging sleeves
En effet, l'invention entend également protéger un manchon thermorétractable d'emballage, qui est réalise a partir d'un tronçon de film thermorétractable et monoorienté présentant l'une au moins des caractéristiques précitées, film dont deux bords d'extrémité sont scelles selon une génératrice du manchonIndeed, the invention also intends to protect a heat-shrinkable packaging sleeve, which is produced from a section of heat-shrinkable and monooriented film having at least one of the aforementioned characteristics, film of which two end edges are sealed according to a sleeve generator
L'invention concerne également un procède de fabrication d'un film d'emballage comportant les caractéristiques précitéesThe invention also relates to a method of manufacturing a packaging film comprising the above characteristics
Dans le cas d'un film à paroi en matière plasti que essentiellement transparente, le procédé comporte les étapes successives suivantes - impression sur une face du film d'une trame dispersante primaire , impression, sur cette trame primaire, d'un marquage en encre sympathique , impression d'une trame dispersante en suπm pression sur le marquage précitéIn the case of a film with a plastics material wall which is essentially transparent, the method comprises the following successive stages - printing on one face of the film of a primary dispersing screen, printing, on this primary screen, of an ink marking sympathetic, impression of a dispersing frame under pressure on the aforementioned marking
Dans le cas d'un film a paroi en matière plasti que teintée dans la masse, le procédé comporte les étapes successives suivantesIn the case of a film having a wall made of plastic material that is dyed in the mass, the method comprises the following successive steps
- impression sur une face du film d'un marquage en encre sympathique , - impression d'une trame dispersante en surim¬ pression sur le marquage précité- printing on one side of the film of a nice ink marking, - printing a dispersing screen surim ¬ pressure on said marking
D'autres caractéristiques et avantages de l'in¬ vention apparaîtront plus clairement à la lumière de la description qui va suivre, concernant un mode de réalisation particulier, en référence aux figures du dessin annexé oùOther features and advantages of the in ¬ vention will become more apparent in light of the following description relating to a particular embodiment, in reference to the accompanying drawings where
- la figure 1 illustre schématiquement le mode d'obtention d'un élément d'emballage, ici sous forme d'un film, dont la paroi en matière plastique est transparente et porte un marquage invisible en encre sympathique conformément à 1 ' invention ;- Figure 1 schematically illustrates the method of obtaining a packaging element, here in the form of a film, the plastic wall of which is transparent and bears an invisible marking in sympathetic ink according to the invention;
- la figure 2 illustre les mêmes étapes qu'à la figure 1, mais en vue schématique en coupe , - la figure 3 est une vue schématique analogue à celle de la figure 2, dans le cas où l'on utilise un film dont la paroi en matière plastique est teintée dans la masse ,- Figure 2 illustrates the same steps as in Figure 1, but in schematic sectional view, - Figure 3 is a schematic view similar to that of Figure 2, in the case where a film is used whose plastic wall is mass dyed,
- la figure 4 illustre différents types de struc- tures utilisées pour imprimer le marquage, et par suite repris pour réaliser la structure mouchetée constituant la ou les trames dispersantes ,FIG. 4 illustrates different types of structures used to print the marking, and consequently used again to produce the speckled structure constituting the dispersing screen (s),
- la figure 5 est une vue schématique illustrant une installation mettant en oeuvre un procédé de fabπca- tion d'un film d'emballage à paroi transparente et a marquage invisible en encre sympathique conforme à l'inven¬ tion, avec éventuellement un marquage supplémentaire lisible sous lumière UV ,- Figure 5 is a schematic view illustrating an installation implementing a fabπca- tion method of a transparent wall packaging film and invisible marking in sympathetic ink according to the inven ¬, possibly with an additional marking readable under UV light,
- la figure 6 est une vue en perspective îllus trant un manchon thermorétractable d'emballage réalise a partir d'un tronçon de film du type précité, conformément a 1 ' inventionFIG. 6 is a perspective view of a heat shrinkable packaging sleeve made from a section of film of the aforementioned type, in accordance with the invention
Sui les figures 1 et 2 , on distingue une bande de film d'emballage 10 en matière plastique dont la paroi est ici transparente La face supérieure de cette paroi est notée 11 et sa face inférieure est notée 12. Le matériau constitutif de ce film pourra par exemple être choisi parmi les matériaux habituellement utilisés dans le domaine de l'emballage, tels que polyéthylène, polystyrène, polychlorure de vinyle, etc. Il s'agira d'une façon générale de toute matière plastique rigide ou semi- rigide permettant de réaliser une boîte, une coque (blister) , ou un film souple.Sui Figures 1 and 2, there is a strip of plastic packaging film 10 whose wall is transparent here The upper face of this wall is denoted 11 and its lower face is denoted 12. The constituent material of this film could for example be chosen from the materials usually used in the packaging field, such as polyethylene, polystyrene, polyvinyl chloride, etc. It will generally be any rigid or semi-rigid plastic material making it possible to produce a box, a shell (blister), or a flexible film.
Au niveau de l'étape a) , le film 10 porte sur sa face 11 des éléments d'identification imprimés 13, ici schématisés par les lettres A et B. Le film d'emballage 10 est en l'espèce transparent, de sorte que les éléments d'identification imprimés 13 sont parfaitement visibles par la face opposée 12 qui est par exemple le recto du film. En b) , on procède au dépôt d'une trame dispersante primaire 14 qui a une structure mouchetée, et aléatoire . Cette trame primaire 14 est par exemple imprimée au moyen d'un cylindre d'enduction tramé, par exemple selon une technique de héliogravure ou toute autre technique d'impression par trame n'utilisant pas nécessairement des cylindres. Dans le cas d'un cylindre, la surface périphéri¬ que du cylindre est alors gravée selon le motif désiré de la structure mouchetée aléatoire. On choisira pour cette trame dispersante primaire 14 une structure qui reprend la structure utilisée ensuite pour imprimer un marquage en encre sympathique, par exemple en utilisant des points, des croix, des traits, etc. En l'espèce, on a représenté de façon schématique une trame dispersante primaire 14 réalisée sous la forme d'un nuage de petits points. En c) , un marquage 15 est imprimé avec une encre sympathique. Ce marquage est, à titre d'exemple, schématisé ici par une séquence de chiffres 1,2,3,4. En l'espèce, on a choisi de disposer le marquage 15 en encre sympathique de telle façon qu'il chevauche au moins en partie les éléments d'identification imprimés 13. Ceci permet de mieux lutter contre des tentatives d'intervention visant à détruire le marquage imprimé, si tant est que la position de ce marquage ait pu être repérée, car une telle tentative aurait pour effet d'altérer de façon visible la présence des éléments d'identification imprimés 13. Ces éléments d'identification pourront être la marque du produit, ou des éléments visuels tels que ceux qui sont couramment utilisés par exemple pour les mentions légales donnant 1 ' origine ou la composition du produit. Ainsi, dans le cas de produits pharmaceutiques par exemple, la suppression de mentions légales ou de mentions indiquant la composition du produit rendrait le produit totalement invendableAt step a), the film 10 carries on its face 11 printed identification elements 13, here shown schematically by the letters A and B. The packaging film 10 is in this case transparent, so that the printed identification elements 13 are perfectly visible from the opposite face 12 which is for example the front of the film. In b), a primary dispersing frame 14 is deposited which has a speckled and random structure. This primary screen 14 is for example printed by means of a screened coating cylinder, for example according to a gravure printing technique or any other technique of screen printing not necessarily using cylinders. In the case of a cylinder, the peripheral surface ¬ that of the cylinder is then etched according to the desired pattern of the random speckled structure. For this primary dispersing frame 14, a structure will be chosen which takes up the structure then used to print a marking in sympathetic ink, for example by using dots, crosses, lines, etc. In this case, there is shown schematically a primary dispersing frame 14 produced in the form of a cloud of small dots. In c), a marking 15 is printed with a sympathetic ink. This marking is, for example, shown schematically here by a sequence of numbers 1,2,3,4. In this case, we have chosen to have the marking 15 in sympathetic ink so that it at least partially overlaps the printed identification elements 13. This makes it possible to better fight against attempts to intervene to destroy the printed marking, if the position of this marking could be identified, because such an attempt would have the effect of visibly altering the presence of the printed identification elements 13. These identifying elements may be the brand of the product, or visual elements such as those which are commonly used for example for the legal notices giving the origin or the composition of the product. Thus, in the case of pharmaceutical products for example, the deletion of legal notices or of indications indicating the composition of the product would make the product totally unsellable
Il convient de noter que la trame dispersante primaire 14 est présente sur toute la zone notée 17 de la face 11 du film qui entoure le marquage 15.It should be noted that the primary dispersing frame 14 is present over the entire area denoted 17 on the face 11 of the film which surrounds the marking 15.
En d) , on procède au dépôt d'une trame disper¬ sante 16 en surimpression recouvrant le marquage 15 et au moins la zone 17 précitée qui entoure ledit marquage, pour rendre ce dernier indécelable. Le marquage 15 est ainsi pris en sandwich entre les deux trames dispersantes 14,16In d), a disper ¬ health frame 16 is superimposed overlaying the marking 15 and at least the aforementioned zone 17 which surrounds said marking, to make the latter undetectable. The marking 15 is thus sandwiched between the two dispersing frames 14,16
La demanderesse a effectué de nombreux essais avant d'arriver à une solution vraiment performante, et a pu en particulier constater que le produit obtenu à l'étape c) , bien qu'exploitable en théorie, ne permet pas de lutter vraiment efficacement contre un repérage intelligent effectué en lumière rasante par un contrefacteur. C'est donc le dépôt de la trame dispersante 16, en surimpression, qui rend véritablement invisible ou indécelable la présence du marquage 15 imprimé . La trame dispersante 16 en surimpression a également une structure mouchetée qui reprend la structure utilisée pour imprimer le marquage 15.The Applicant has carried out numerous tests before arriving at a truly efficient solution, and has been able in particular to note that the product obtained in step c), although usable in theory, does not make it possible to really fight effectively against a intelligent location made in grazing light by a counterfeiter. It is therefore the deposition of the dispersing frame 16, overprinted, which makes the presence of the printed marking 15 truly invisible or undetectable. The overprinting dispersing frame 16 also has a speckled structure which takes up the structure used to print the marking 15.
Ainsi en d) , on arrive à un film d'emballage dont la face 11 comporte un marquage 15 imprimé avec une encre sympathique, et, en surimpression, une trame dispersante 16 recouvrant ce marquage 15 et au moins la zone 17 de ladite face qui entoure ledit marquage, pour rendre ce dernier indécelable Le film est transparent dans la zone 17 de sa face qui entoure le marquage 15, et il comporte sur ladite face une trame dispersante primaire 14 sur laquelle le marquage 15 est imprimé, l'ensemble étant recouvert par la trame dispersante en surimpression 16Thus in d), we arrive at a packaging film whose face 11 includes a marking 15 printed with a sympathetic ink, and, in overprint, a dispersing screen 16 covering this marking 15 and at least zone 17 of said face which surrounds said marking, to make the latter undetectable The film is transparent in zone 17 of its face which surrounds marking 15, and it comprises on said face a primary dispersing weft 14 on which the marking 15 is printed, the assembly being covered by the overprinting dispersing frame 16
Le marquage 15 est donc dans ce cas pris en sandwich entre la trame dispersante primaire 14 et la trame dispersante en surimpression 16The marking 15 is therefore in this case sandwiched between the primary dispersing frame 14 and the overprinting dispersing frame 16
Bien que le cas d'un film transparent soit dans la pratique le plus fréquent, on pourra également prévoir des films d'emballage de type opaque ou opacifié dans la zone de leur face qui entoure le marquage ou plus gérérale- ment teintés dans la masse Dans ce cas, l'examen du film d'emballage du côté de la paroi du film ne permet pas par nature de distinguer quoi que ce soit, en particulier le marquage imprimé en encre sympathique Le problème subsiste bien entendu pour un examen de la face opposée du film, notamment en lumière rasante Dans ce cas, le film d'emballage comporte une trame dispersante 16 en surimpression qui est unique, sans trame dispersante primaireAlthough the case of a transparent film is in practice the most frequent, it is also possible to provide packaging films of opaque or opacified type in the zone of their face which surrounds the marking or more generally tinted in the mass In this case, the examination of the packaging film on the side of the wall of the film does not by nature make it possible to distinguish anything, in particular the marking printed in sympathetic ink. The problem naturally remains for an examination of the face. opposite of the film, in particular in grazing light In this case, the packaging film comprises a dispersing weft 16 superimposed which is unique, without primary dispersing weft
Le marquage 15 est donc dans ce cas pris en sandwich entre la face sur laquelle ledit marquage est imprimé et la trame dispersante en surimpression 16The marking 15 is therefore in this case sandwiched between the face on which said marking is printed and the overprinting dispersing frame 16
Ceci est illustré sur la figure 3, où les étapes a),b),c),d), précitées qui concernaient un film d'emballage transparent sont remplacées par des étapes a'),c'),d') analogues aux étapes a),c),d) En a'; le film d'emballage note 10' reçoit les éléments d'identification imprimés 13, puis en c' ι n s'agit de l'impression du marquage 15 en encre sympathique, et enfin en d' ) il s'agit du dépôt de la trame dispersante en surimpression 16, qui est alors l'unique trame utilisée Dans ce cas, cette trame en surimpression 16 rend împossi ble la localisation du marquage imprimé 15 par un examen du côté de la face d'impression, et ce même en cas d'examen effectué en lumière rasanteThis is illustrated in FIG. 3, where the aforementioned steps a), b), c), d) which concerned a transparent packaging film are replaced by steps a '), c'), d ') analogous to steps a), c), d) In a '; the packaging film note 10 ′ receives the printed identification elements 13, then in this it is the printing of the marking 15 in sympathetic ink, and finally in d ′) it is the deposit of the superimposing dispersing screen 16, which is then the only screen used In this case, this overprint screen 16 makes it impossible ble the location of the printed marking 15 by an examination on the side of the printing face, even in the case of examination carried out in low-angle light
Ainsi que cela est été dit plus haut, il est intéressant que le marquage 15 imprimé en encre sympathique chevauche au moins en partie les éléments d'identification imprimés 13 Ceci ne constitue naturellement pas une obligation, mais complique encore la tâche du contrefacteur en rendant pratiquement impossible la préservation des éléments d'identification lors d'un travail de destruction effectué dans la zone du marquage impriméAs was said above, it is interesting that the marking 15 printed in sympathetic ink overlaps at least in part the printed identification elements 13 This naturally does not constitute an obligation, but further complicates the task of the counterfeiter by rendering practically impossible to preserve the identification elements during a destruction work carried out in the area of the printed marking
La protection conférée est encore améliorée si l'on prévoit que l'encre sympathique utilisée pour le marquage 15 n'apparaît que sous l'action d'un reactif chimique particulier, qui est choisi pour avoir une action destructrice irréversible sur le film II pourra s'agir de révélateurs de type solvantés, par exemple des cétones ou des esters Ainsi que cela est aisé à comprendre, si un contrefacteur cherche à décrypter le marquage imprime en utilisant le bon révélateur chimique, la paroi du film présente alors automatiquement des traces de destruction qu sont irréversibles, et donc immédiatement reperables ultérieurement, même par un consommateur d'attention moyenne Cette sécurité peut encore être raffinée en prévoyant que le réactif chimique est choisi pour avoir une action destructrice retardée sur le film En effet, le contrefacteur ne peut prévoir que le solvant va poursuivre son action dans la matière constitutive du film, et provoquer des traces irréversibles de destruction qui n'apparaî- tront que bien après l'intervention effectuée sur le marquageThe protection conferred is further improved if it is provided that the sympathetic ink used for marking 15 only appears under the action of a particular chemical reagent, which is chosen to have an irreversible destructive action on the film II may these are solvent-type developers, for example ketones or esters As is easy to understand, if a counterfeiter seeks to decipher the printing marking using the correct chemical developer, the film wall then automatically shows traces of destruction that is irreversible, and therefore immediately identifiable later, even by a consumer of average attention. This security can be further refined by providing that the chemical reagent is chosen to have a delayed destructive action on the film. Indeed, the counterfeiter cannot foresee that the solvent will continue its action in the material of which the film is made, and cause irreve traces risk of destruction which will not appear until well after the intervention carried out on the marking
Bien entendu, on pourra prévoir différentes encres sympathiques, avec pour chacune un révélateur chimique qui est dédié pour chaque application Seul le destinataire connaît l'emplacement du marquage et le bon révélateur à utiliser, et peut donc décrypter le marquage imprimé en encre sympathique .Of course, we can provide different nice inks, each with a chemical developer that is dedicated for each application Only the recipient knows the location of the marking and the correct developer to use, and can therefore decrypt the marking printed in sympathetic ink.
La figure 4 illustre schématiquement 1 ' effet visuel des structures utilisées pour imprimer le marquage 15 et la ou les trames dispersantes 14,16.FIG. 4 schematically illustrates the visual effect of the structures used to print the marking 15 and the dispersing screen (s) 14, 16.
En 1), le marquage imprimé 15, ici symbolisé par le chiffre 1, est imprimé par des successions de petits points. Si le film 10 utilisé est transparent, alors la face concernée aura été préalablement revêtue de la trame dispersante primaire 14, également réalisée avec une structure mouchetée en petits points. Cette structure étant de préférence aléatoire, le repérage visuel, même par des moyens d'analyse sophistiqués, sera encore compliqué. En l'espèce, on n'a pas représenté la trame primaire 14, pour pouvoir distinguer le chiffre du marquage 15. Après dépôt de la trame dispersante en surimpression 16, le nuage de petits points rend totalement impossible la localisation du chiffre 1 préalablement imprimé en encre sympathique, et ce même avec un examen en lumière rasante . En 2) et en 3 ), on a illustré le même phénomène avec respectivement une structure utilisant des séquences de croix, et des séquences de traits. Il ne s'agit naturellement que d'exemples, et on pourra utiliser toute autre sorte de structure envisageable avec les moyens d'impres- sion actuels.In 1), the printed marking 15, here symbolized by the number 1, is printed by successions of small dots. If the film 10 used is transparent, then the face concerned will have been previously coated with the primary dispersing frame 14, also produced with a structure speckled in small dots. As this structure is preferably random, visual identification, even by sophisticated analysis means, will be further complicated. In this case, the primary screen 14 has not been shown, in order to be able to distinguish the figure from the marking 15. After depositing the dispersing screen overprint 16, the cloud of small dots makes it completely impossible to locate the figure 1 previously printed in sympathetic ink, even with an examination in grazing light. In 2) and in 3), the same phenomenon is illustrated with respectively a structure using sequences of crosses, and sequences of lines. These are, of course, only examples, and any other kind of structure could be used with current printing means.
On pourra en outre prévoir que le film d'emballage comporte un marquage supplémentaire lisible sous lumière ultra-violette (UV) , qui est disjoint du marquage 15 imprimé en encre sympathique . Ce marquage supplémentaire sera de préférence imprimé sur la face opposée à celle qui porte le marquage 15 en encre sympathique L'utilisation d'un tel marquage supplémentaire complique encore la tâche du contrefacteur, qui doit également intervenir avec une lecture ad hoc pour altérer ce marquage. En tout état de cause, même s'il parvient, par dépôt d'un vernis ou autre produit chimique adéquat, à noyer le marquage UV dans une zone agrandie rendant impossible la reconnaissance et la lecture de ce marquage, il reste encore le marquage imprimé en encre sympathique qui, quant à lui, ne peut être décelé grâce à l'utilisation d'une ou deux trames dispersantesProvision may also be made for the packaging film to include an additional marking readable under ultraviolet (UV) light, which is separate from the marking 15 printed in sympathetic ink. This additional marking will preferably be printed on the face opposite to that which bears the marking 15 in sympathetic ink. The use of such additional marking further complicates the task of the counterfeiter, who must also intervene with an ad hoc reading to alter this marking. . In any event, even if it succeeds, by depositing a varnish or other adequate chemical, to drown the UV marking in an enlarged area making it impossible to recognize and read this marking, there is still the marking printed in sympathetic ink which, meanwhile, cannot be detected thanks to the use of one or two dispersing frames
Sur la figure 5, on a illustré un mode de fabrication d'un film d'emballage conforme à l'invention II s'agit bien entendu d'une illustration schématique, visant seulement à faire comprendre les interventions successives réalisées sur le film.In FIG. 5, a method of manufacturing a packaging film in accordance with the invention has been illustrated. It is of course a schematic illustration, aiming only to explain the successive operations carried out on the film.
Le film 10, éventuellement préalablement imprimé, par exemple avec ses éléments d'impression précédemment mentionnés, est ici de type transparent. Le film 10 arrive tout d'abord au niveau d'un poste 20 correspondant à l'impression de la trame dispersante primaire 14 Pour cela, il passe entre deux rouleaux 21,22 dont le rouleau 21 est un cylindre tramé, dont le tramage est de préférence choisi conforme à la structure utilisée pour l'impression ultérieure du marquage. Bien que toute couleur puisse être utilisée, on choisira de préférence une couleur grise ou noire déjà utilisée pour l'impression des éléments d'impression Le film 10 arrive ensuite au niveau d'un poste 30 d'impression du marquage en encre sympathique. Le dispositif utilisé est schématisé en 31.11 est à noter que l'impression du marquage en encre sympathique intervient ici sur la face 11 ou verso (V) du film qui est celle déjà préalablement revêtue de la trame dispersante primaire 14 Eventuellement, on a prévu un dispositif 32 servant à imprimer un marquage UV (longs ou courts selon le cas) , ici sur la face 12 opposée à celle portant le marquage imprime en encre sympathique, c'est-à-dire sur le recto (R) du film. Le film 10 passe enfin au niveau d'un poste 40 d'impression de la trame dispersante en surimpression 16 Le film 10 passe ainsi entre deux rouleaux 41 et 42, dont le rouleau 41 est un cylindre tramé analogue au cylindre 21 utilisé au niveau du poste 20. Ce dépôt de la trame dispersante 16 en surimpression est fondamental, car c'est lui qui permet de prendre en sandwich le marquage réalisé en encre sympathique, et ainsi de rendre indécelable ledit marquage .The film 10, possibly previously printed, for example with its previously mentioned printing elements, is here of transparent type. The film 10 first arrives at a station 20 corresponding to the printing of the primary dispersing screen 14 For this, it passes between two rollers 21,22 of which the roller 21 is a screened cylinder, the screening of which is preferably chosen in accordance with the structure used for the subsequent printing of the marking. Although any color can be used, it is preferable to choose a gray or black color already used for printing the printing elements. The film 10 then arrives at a station 30 for printing the marking in sympathetic ink. The device used is shown diagrammatically in 31.11. It should be noted that the printing of the marking in sympathetic ink occurs here on the side 11 or back (V) of the film which is that already coated beforehand with the primary dispersing frame 14 Optionally, provision has been made for a device 32 used to print a UV marking (long or short as the case may be), here on the face 12 opposite to that carrying the marking prints in sympathetic ink, that is to say on the front (R) of the film. The film 10 finally passes at a station 40 for printing the overprinting dispersing screen 16. The film 10 thus passes between two rollers 41 and 42, the roller 41 of which is a screened cylinder analogous to cylinder 21. used at the level of station 20. This deposition of the dispersing frame 16 in overprinting is fundamental, because it is it which makes it possible to sandwich the marking produced in sympathetic ink, and thus to make said marking undetectable.
Ainsi que cela a été dit plus haut, le film d'emballage peut être un film thermorétractable et monoorienté. Ceci est tout particulièrement intéressant lorsque l'on utilise un tel film pour conformer des manchons thermorétractables d'emballage. On a illustré sur la figure 6 un tel manchon thermorétractable d'emballage qui va maintenant être décrit plus en détail .As mentioned above, the packaging film can be a heat-shrinkable and monoriented film. This is particularly advantageous when using such a film to conform heat-shrinkable packaging sleeves. Illustrated in Figure 6 such a heat shrinkable packaging sleeve which will now be described in more detail.
Sur la figure 6, on distingue ainsi un manchon thermorétractable 50, réalisé à partir d'un tronçon de film 10 ou 10', revêtu avec les impressions et trames précitées, dont deux bords d'extrémité sont scellés selon une génératrice du manchon, au niveau d'une ligne de scellage notée 51. Sur la face extérieure 12 du manchon, on notera la présence d'un marquage UV 18, ici schématisé par les chiffres 1,2,3,4. Sur la face interne 11 du manchon, on notera la présence d'éléments d'identification imprimés 13, ic encore schématisés par les lettres A,B, et la présence d'un marquage en encre sympathique, également schématise par les chiffres 1,2,3,4 On utilise ainsi le même encodage crypté pour le marquage 15 en encre sympathique et pour le marquage UV 18. Cette représentation correspond en fait à celle obtenue après utilisation du révélateur adéquat permettant de lire le marquage imprimé en encre sympathique 15 On ne distingue pas sur la figure 6 les trames disper- santés 14 et 16 qui prennent en sandwich le marquage 15 en encre sympathiqueIn FIG. 6, a heat shrinkable sleeve 50 is thus distinguished, produced from a section of film 10 or 10 ′, coated with the abovementioned prints and screens, two end edges of which are sealed according to a generatrix of the sleeve, at the level of a sealing line denoted 51. On the outer face 12 of the sleeve, the presence of a UV marking 18 will be noted, here diagrammed by the figures 1,2,3,4. On the inner face 11 of the sleeve, note the presence of printed identification elements 13, ic still shown schematically by the letters A, B, and the presence of a marking in sympathetic ink, also shown schematically by the numbers 1,2 , 3,4 The same encrypted encoding is thus used for the marking 15 in sympathetic ink and for the UV marking 18. This representation corresponds in fact to that obtained after use of the suitable developer making it possible to read the marking printed in sympathetic ink 15 One does not do not distinguish in FIG. 6 the scattered screens 14 and 16 which sandwich the marking 15 in sympathetic ink
En l'espèce, le film constitutif du manchon 50 portant le marquage en encre sympathique 15 et les trames dispersantes 14,16 est en totalité transparent II va de soi que l'on pourra prévoir que la face 11 dudit manchon portant le marquage en encre sympathique 15 et la trame dispersante unique en surimpression 16 soit teintée dans la masse, auquel cas on n'utilise qu'une seule trame dispersante (en surimpression sur le marquage en encre sympathi- que)In this case, the film constituting the sleeve 50 bearing the marking in sympathetic ink 15 and the dispersing screens 14, 16 is entirely transparent. It goes without saying that it will be possible to provide that the face 11 of said sleeve. bearing the marking in sympathetic ink 15 and the single dispersing weft overprinted 16 is tinted in the mass, in which case only one dispersing screen is used (superimposed on the marking in sympathetic ink)
De préférence, le marquage en encre sympathique 15 sera un codage servant à garantir 1 ' identification et la traçabilité de l'objet ou du groupe d'objets emballe Le destinataire dispose du révélateur ad hoc, et il connaît l'emplacement du codage imprimé en encre sympathique il peut alors aisément lire le codagePreferably, the marking in sympathetic ink 15 will be a coding serving to guarantee the identification and the traceability of the object or group of objects packaged. The recipient has the ad hoc developer, and he knows the location of the coding printed in nice ink so it can easily read the coding
On est ainsi parvenu à réaliser une structure de film d'emballage ou de manchon d'emballage thermorétractable portant un codage en encre sympathique qui est non seulement invisible du fait de la nature de l'encre, mais indécelable grâce à l'utilisation d'au moins une trame dispersante La sécurité obtenue atteint ici un degré très élevé, surtout si l'on utilise une encre n'apparaissant que sous l'action d'un réactif chimique choisi pour avoir une action destructrice irréversible sur le filmWe have thus achieved a structure of packaging film or heat-shrinkable packaging sleeve carrying a sympathetic ink coding which is not only invisible due to the nature of the ink, but undetectable thanks to the use of at least one dispersing screen The security obtained here reaches a very high degree, especially if an ink which appears only under the action of a chemical reagent chosen to have an irreversible destructive action on the film is used
La description qui précède s'applique naturellement de la même façon aux cas où l'élément d'emballage en matière plastique n'est pas un film souple, mais présente une paroi rigide ou semi-rigide, formant un conteneur, en particulier un flacon, une coque (notamment blister) ou une boîte Là encore, on reprendra le même concept fondamental de prise en sandwich du marquage en encre sympathique, soit entre deux trames dispersantes si la paroi est transparente, soit entre la face imprimée et une trame dispersante en surimpression si la paroi est teintée dans la masseThe above description naturally applies in the same way to cases where the plastic packaging element is not a flexible film, but has a rigid or semi-rigid wall, forming a container, in particular a bottle. , a shell (in particular a blister) or a box Again, we will use the same basic concept of sandwiching the marking in sympathetic ink, either between two dispersing screens if the wall is transparent, or between the printed side and a dispersing screen in overprint if the wall is tinted in the mass
L'invention n'est pas limitée au mode de réalisation qui vient d'être décrit, mais englobe au contraire toute variante reprenant, avec des moyens équivalents, les caractéristiques essentielles énoncées plus haut On pourra par exemple prévoir de prendre égale- ment en sandwich le marquage UV, comme le marquage en encre sympathique, car sa lisibilité n'est pas affectée. The invention is not limited to the embodiment which has just been described, but on the contrary encompasses any variant incorporating, with equivalent means, the essential characteristics set out above. We could for example plan to take equal- sandwich UV marking, like sympathetic ink marking, because its readability is not affected.

Claims

REVENDICATIONS
1. Elément d'emballage à marquage imprimé, dont la paroi est réalisée en matière plastique essentiellement transparente, caractérisé en ce qu'il comporte sur une face (11) de ladite paroi un marquage (15) imprimé avec une encre sympathique, ledit marquage (15) étant pris en sandwich entre une trame dispersante primaire (14) déposée sur ladite face et sur laquelle ledit marquage est imprimé, et une trame dispersante en surimpression (16) recouvrant ce marquage (15) et au moins la zone (17) de la dite face qui entoure ledit marquage, pour rendre ce dernier indéce¬ lable.1. Packaging element with printed marking, the wall of which is made of essentially transparent plastic, characterized in that it comprises on one face (11) of said wall a marking (15) printed with a sympathetic ink, said marking (15) being sandwiched between a primary dispersing frame (14) deposited on said face and on which said marking is printed, and a dispersing overprinting frame (16) covering this marking (15) and at least the area (17) of said face which surrounds said marking, to make the latter indéce ¬ lable.
2. Elément d'emballage à marquage imprimé, dont la paroi est réalisée en matière plastique teintée dans la masse, caractérisé en ce qu'il comporte sur une face (11) de ladite paroi un marquage (15) imprimé avec une encre sympathique, ledit marquage (15) étant pris en sandwich entre ladite face (11) sur laquelle ledit marquage est imprimé, et une trame dispersante en surimpression (16) recouvrant ce marquage (15) et au moins la zone (17) de ladite face qui entoure ledit marquage, pour rendre ce dernier indécelable.2. Packaging element with printed marking, the wall of which is made of mass-dyed plastic, characterized in that it comprises on one face (11) of said wall a marking (15) printed with a sympathetic ink, said marking (15) being sandwiched between said face (11) on which said marking is printed, and a dispersing weft overlay (16) covering this marking (15) and at least the zone (17) of said face which surrounds said marking, to make the latter undetectable.
3. Elément d'emballage selon la revendication 1 ou la revendication 2, caractérisé en ce que la ou chaque trame dispersante (14,16) a une structure mouchetée qui reprend la structure utilisée pour imprimer le marquage (15) .3. Packaging element according to claim 1 or claim 2, characterized in that the or each dispersing frame (14,16) has a speckled structure which takes up the structure used to print the marking (15).
4. Elément d'emballage selon la revendication 3, caractérisé en ce que la ou chaque trame dispersante (14,16) est aléatoire.4. Packaging element according to claim 3, characterized in that the or each dispersing frame (14,16) is random.
5. Elément d'emballage selon l'une des revendica¬ tions 1 à 4, caractérisé en ce que le marquage (15) imprimé avec une encre sympathique chevauche au moins en partie des éléments d'identification imprimés (13) sur la même face (il) . 6 Elément d'emballage selon la revendication 5, caractérisé en ce que l'encre sympathique utilisée pour le marquage (15) n'apparaît que sous l'action d'un reactif chimique choisi pour avoir une action destructrice îrréver- sible sur la paroi de l'élément (10,10')5. A packaging element according to CLAIMS ¬ tions 1 to 4, characterized in that the marking (15) printed with sympathetic ink overlaps at least in part printed identification elements (13) on the same side (he) . 6 packaging element according to claim 5, characterized in that the sympathetic ink used for marking (15) appears only under the action of a chemical reagent chosen to have a destructive irreversible action on the wall of the element (10,10 ')
7 Elément d'emballage selon la revendication 6 caractérisé en ce que le réactif chimique est choisi poui avoir une action destructrice retardée sur la paroi de l'élément (10,10') 8 Elément d'emballage selon l'une des revendications 1 à 7, caractérisé en ce qu'il comporte un marquage supplémentaire (18) lisible sous lumière UV, disjoint du marquage (15) imprimé en encre sympathique.7 packaging element according to claim 6 characterized in that the chemical reagent is chosen poui have a delayed destructive action on the wall of the element (10,10 ') 8 packaging element according to one of claims 1 to 7, characterized in that it includes an additional marking (18) readable under UV light, separate from the marking (15) printed in sympathetic ink.
9 Elément d'emballage selon la revendication 8, caractérisé en ce que le marquage supplémentaire (18) est imprimé sur la face opposée à celle qui porte le marquage (15) en encre sympathique9 packaging element according to claim 8, characterized in that the additional marking (18) is printed on the face opposite to that which carries the marking (15) in sympathetic ink
10 Elément d'emballage selon l'une des revendi¬ cations 1 à 9, caractérisé en ce que la face (11) portant le marquage en encre sympathique (15) et la ou les trames dispersantes (14,16) est la face interne, c'est-à-dire la face qui est tournée vers l'objet ou le groupe d'objets a emballer10 A packaging element according to one of revendi ¬ cation 1 to 9, characterized in that the face (11) carrying the marking in sympathetic ink (15) and the or dispersing screen (14,16) is the inner face , i.e. the side which faces the object or group of objects to be wrapped
11 Elément d'emballage selon l'une des revendi- cations 1 à 10, caractérisé en ce que le marquage (15) en encre sympathique est un codage servant à garantir la traçabilité de l'objet ou du groupe d'objets emballé11 Packaging element according to one of claims 1 to 10, characterized in that the marking (15) in sympathetic ink is a coding used to guarantee the traceability of the object or group of objects packaged
12 Elément d'emballage selon l'une des revendi¬ cations 1 à 11, caractérisé en ce que la paroi dudit élément est rigide ou se i-rigide et forme un conteneur en particulier un flacon, une coque, ou une boîte12 A packaging element according to one of revendi ¬ cation 1 to 11, characterized in that the wall of said element is rigid or i-rigid and forms a container in particular a bottle, a shell or box
13 Elément d'emballage selon l'une des revendi¬ cations 1 à 11, caractérisé en ce que la paroi dudit élément est souple, et forme un film d'emballage, en particulier un film thermorétractable et mono-orienté 14 Manchon thermorétractable d'emballage, caractérisé en ce que le manchon (50) est réalisé à partir d'un tronçon de film (10,10') conforme à l'une au moins des revendications 1 à 11 et à la revendication 13, film dont deux bords d'extrémité sont scellés selon une génératrice (51) dudit manchon13 Item packaging according to one of revendi ¬ cation 1 to 11, characterized in that the wall of said element is flexible, and forms a packaging film, particularly a heat-shrinkable film mono-oriented 14 Heat-shrinkable packaging sleeve, characterized in that the sleeve (50) is produced from a section of film (10,10 ') according to at least one of claims 1 to 11 and to claim 13, film, two end edges of which are sealed according to a generatrix (51) of said sleeve
15 Procédé de fabrication d'un film d'emballage conforme aux revendications 1 et 13 et à l'une au moins des revendications 3 à 11, caractérisé en ce qu'il comporte les étapes successives suivantes15 A method of manufacturing a packaging film according to claims 1 and 13 and at least one of claims 3 to 11, characterized in that it comprises the following successive steps
- impression sur une face (11) du film (10) d'une trame dispersante primaire (14) ,- printing on one face (11) of the film (10) of a primary dispersing screen (14),
- impression, sur cette trame primaire (14), d'un marquage (15) en encre sympathique ; - impression d'une trame dispersante (16) en surimpression sur le marquage précité (15)- Printing, on this primary screen (14), of a marking (15) in sympathetic ink; - printing of a dispersing frame (16) superimposed on the aforementioned marking (15)
16 Procédé de fabrication d'un film d'emballage conforme aux revendications 2 et 13 et à l'une au moins des revendications 3 à 11, caractérisé en ce qu'il comporte les étapes successives suivantes16 A method of manufacturing a packaging film according to claims 2 and 13 and at least one of claims 3 to 11, characterized in that it comprises the following successive steps
- impression sur une face (11) du film (10') d'un marquage (15) en encre sumpathique , impression d'une trame dispersante (16) en surimpression sur le marquage précité (15) - Printing on one side (11) of the film (10 ') of a marking (15) in sumpathic ink, printing of a dispersing weft (16) superimposed on the aforementioned marking (15)
EP00949608A 1999-07-30 2000-07-03 Packaging element with printed marking, use thereof and method for making same Expired - Lifetime EP1200270B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9909950 1999-07-30
FR9909950A FR2796922A1 (en) 1999-07-30 1999-07-30 PACKAGING ELEMENT WITH PRINTED MARKING, HEAT SHRINKABLE PACKAGING SLEEVE MADE FROM THE SAID ELEMENT IN THE FORM OF FILM, AND PROCESS FOR MANUFACTURING THE SAID FILM
PCT/FR2000/001881 WO2001008894A1 (en) 1999-07-30 2000-07-03 Packaging element with printed marking, use thereof and method for making same

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EP1200270A1 true EP1200270A1 (en) 2002-05-02
EP1200270B1 EP1200270B1 (en) 2003-04-02

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EP (1) EP1200270B1 (en)
AT (1) ATE236018T1 (en)
AU (1) AU6291100A (en)
BR (1) BR0012857B1 (en)
DE (1) DE60001957T2 (en)
ES (1) ES2193096T3 (en)
FR (1) FR2796922A1 (en)
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US20050269819A1 (en) * 2003-10-07 2005-12-08 Chambers James D Packaging with embedded security measures
WO2005035258A2 (en) * 2003-10-07 2005-04-21 Rock-Tenn Company Packaging material with embedded security mechanisms
ATE437760T1 (en) * 2004-09-09 2009-08-15 Alcan Tech & Man Ltd ITEM WITH ANTI-COUNTERFEIT PRINTING
CN100393530C (en) * 2005-04-30 2008-06-11 郭东宇 Printing method and package box printed thereby, and application thereof
US7571810B2 (en) 2005-09-08 2009-08-11 One Source Industries, Llc Printed packaging
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JP2009521769A (en) * 2005-12-27 2009-06-04 ビザ ユー．エス．エー．インコーポレイティド Method and system for conducting transactions with oligopolistic entities
CA2677287A1 (en) 2007-02-08 2008-08-14 One Source Industries, Llc Printed packaging
FR2952852B1 (en) 2009-11-25 2012-02-03 Advanced Track & Trace DOCUMENT, METHOD AND DEVICE FOR MANUFACTURING DOCUMENT AND METHOD AND DEVICE FOR IDENTIFYING DOCUMENT
CN112918064B (en) * 2021-01-25 2022-09-30 珠海市旺林包装材料有限公司 Packaging film containing tracking codes and printing and coding method thereof

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DE60001957D1 (en) 2003-05-08
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US6755443B1 (en) 2004-06-29
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BR0012857B1 (en) 2009-01-13
ES2193096T3 (en) 2003-11-01
FR2796922A1 (en) 2001-02-02
PT1200270E (en) 2003-08-29
DE60001957T2 (en) 2004-03-04
AU6291100A (en) 2001-02-19
WO2001008894A1 (en) 2001-02-08

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