EP1082256A1 - Safety envelope formed by a sleeve made in heat shrinkable material equipped with an identifying metal-coated strip - Google Patents

Safety envelope formed by a sleeve made in heat shrinkable material equipped with an identifying metal-coated strip

Info

Publication number
EP1082256A1
EP1082256A1 EP99918057A EP99918057A EP1082256A1 EP 1082256 A1 EP1082256 A1 EP 1082256A1 EP 99918057 A EP99918057 A EP 99918057A EP 99918057 A EP99918057 A EP 99918057A EP 1082256 A1 EP1082256 A1 EP 1082256A1
Authority
EP
European Patent Office
Prior art keywords
strip
sleeve
metallized
tear strip
tear
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
EP99918057A
Other languages
German (de)
French (fr)
Other versions
EP1082256B1 (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 EP1082256A1 publication Critical patent/EP1082256A1/en
Application granted granted Critical
Publication of EP1082256B1 publication Critical patent/EP1082256B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/06—Deformable or tearable wires, strings, or strips; Use of seals, e.g. destructible locking pins
    • B65D55/08—Annular elements encircling container necks
    • B65D55/0818—Destructible or permanently removable bands, e.g. adhesive
    • B65D55/0854—Shrink-film bands
    • 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
    • B65D2211/00—Anti-theft means
    • 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
    • B65D2555/00—Accessories for container closures not otherwise provided for
    • B65D2555/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D2555/025—Applied tearing or cutting means, e.g. tear-strings

Definitions

  • the present invention relates to the field of packaging objects, and more particularly packaging produced by means of an envelope constituted by a sleeve made of heat-shrinkable plastic material intended to be retracted on the object or objects concerned.
  • an envelope constituted by a sleeve made of heat-shrinkable plastic material intended to be retracted on the object or objects concerned.
  • a tear strip fitted to the heat-shrinkable sleeve on the internal face of the latter, said strip being most of the time arranged along a generatrix of the sleeve, and much more rarely in a circumferential direction of said sleeve.
  • one or two perforation lines may be provided in the vicinity of the tear strip, in order to facilitate tearing of the wall of the sleeve when traction is exerted by pulling on one end of the tear strip.
  • the heat-shrinkable sleeves used can be used to support inscriptions, possibly also to include a user manual (a pocket delimited by two parallel sealing lines arranged along generators of the sleeve is then arranged), or to ensure the inviolability of the object, in particular in association with an object opening system (cover or plug), or even to provide anti-theft protection of the object by supporting, for example, a filament forming an electromagnetic antenna.
  • the invention relates more particularly to a security envelope of the type consisting of a sleeve made of heat-shrinkable plastic material capable of closely surrounding a part of the object concerned, said sleeve being further equipped, on its internal face, with a strip of tear-off and a metallized identification strip which extends parallel to said tear-off strip.
  • an adhesive bond is generally provided, as was already the case for overwrap films fitted with a tear strip passing around the packaged object (see for example documents US-A-3 362 617, EP-A-0 223 498, and GB-A-2 123 376). More recently, attempts have been made to combine several functions with the same sleeve, for example by providing a tear strip carrying a metal filament constituting an antenna for an electronic monitoring system operating on a magnetic detection principle, as illustrated in the document. EP-A-0 698 562 to the applicant.
  • the metallic filament in question cannot be compared to a metallized identification strip, - moreover, in the variant of the figures 7a and 7b, the filament sandwiched between the tear strip and the internal wall of the sleeve is surrounded by adhesive, in particular between the filament and the wall of the sleeve, which is not a problem for a metallic filament constituting a antenna operating on a magnetic resonance principle, but what would be if we wanted to be able to perform an optical reading by transparency through the wall of the sleeve.
  • tear strips including a hologram, the hologram strip being bonded to the internal face of the sleeve, and perforations being provided in the tear strip and in the wall of the sleeve to facilitate opening by pulling on said tear strip (see for example document GB-A-2 273 492).
  • a self-adhesive hologram tape has the disadvantage of being expensive to manufacture.
  • Another technique consists in providing a tamper-evident security strip comprising a substrate including a hologram, each surface of the substrate having an adhesive layer, and the security element being fixed to the wall of the sleeve by one of its layers. adhesive (see for example GB-A-2 298 391).
  • Such a technique with double adhesive bond that is to say both on the face of the sleeve and on the wall of the object, naturally provides the advantage of reliable detection in the event of abnormal manipulation exerted on the sleeve or object.
  • this technique remains expensive and difficult to implement.
  • the tear strip is arranged in the vicinity of, and parallel to, the hologram strip, so that this tear strip serves only to ensure the function traditional aid for tearing the envelope, without intervening in any way in the security function which is ensured by the hologram strip.
  • the sleeve of which is equipped, on its internal face, with a holographic element and with a tear strip passing behind this holographic element, in order to tear said element during 1 opening of the envelope by pulling on the strip (see for example document FR-A-2 754 375 by the applicant).
  • the inner wall of the sleeve carries a holographic element produced in the form of an enlarged patch which is bonded directly against the inner wall of the sleeve, this patch comprising a holographic metallization layer carried by a plastic support layer. transparent adhering to the internal face of the sleeve.
  • a holographic element is intended to constitute a certification of origin of the product.
  • the invention aims to design a security envelope with tear strip and metallized strip iden ⁇ tification that is able to combine the advantages of the above techniques, without having the disadvantages, being especially economic to produce, and especially by providing a perfect optical value for legibility through the wall of the heat-shrinkable sleeve.
  • a security envelope for objects in particular for containers with a closure device, of the type constituted by a sleeve made of heat-shrinkable plastic material capable of closely surrounding a part of the object.
  • said sleeve being further equipped, on its internal face, with a tear strip and a metallized identification strip which extends parallel to said tear strip, said envelope being remarkable in that the metallized strip is non-adhesive, and it is sandwiched between the internal face of the sleeve and an adhesive face of the tear strip, the tear strip projecting on both sides of the metallized strip so as to adhere to the internal face of the sleeve by zones situated on either side of said metallized strip.
  • the metallized strip is perfectly pressed against the internal face of the heat-shrinkable sleeve without the slightest presence of varnish or glue altering the optical value of the legibility by transparency through the wall of said sleeve.
  • the metallized identification strip which can be a holographic strip, is perfectly held in position by the tear strip which completely envelops it, in particular on either side of the edges thereof, without the we had to provide an adhesive face for the metallic strip. So we can use existing holographic bands, with the desired pattern of any complex two or three dimensional type, without having to deposit adhesive material on one of their faces.
  • the metallized strip has its metallized face turned towards the adhesive face of the tear strip.
  • the brittleness at destruction for the metallized part is considerably increased, insofar as the slightest manipulation of the tear strip has the immediate effect of causing delamination, leading to at least partial destruction of the part metallic, especially holographic. This therefore reinforces the self-destruction effect in the event of fraudulent manipulation of the wrapped object.
  • the tear strip and the metallized strip extend along a generatrix of the sleeve, over the entire height of the latter.
  • the tear strip and the metallized strip extend circumferentially, over the entire inner periphery of the sleeve.
  • the tear strip is made of heat-shrinkable plastic, so as to have the same transverse shrinkage as the wall of the sleeve.
  • the metallized strip can likewise be produced from a strip of heat-shrinkable plastic, so as to also have the same transverse shrinkage as the wall of the sleeve.
  • a detection antenna or a chip may be sandwiched between the metallized strip and the adhesive face of the tear strip.
  • FIG. 1 is a perspective view illustrating a security envelope according to the invention, the tear strip which traps the metallized identification strip extends along a generatrix of the heat-shrinkable sleeve, over the entire height of it;
  • FIG. 2 is a plan view of the developed inner surface of the sleeve constituting the aforementioned envelope, with an imprint (represented by the letter S) on one side of the tear strip glued against the inner wall of the muff ;
  • FIG. 3 is a section on III -III of Figure 2, on a very enlarged scale, to better distinguish the multilayer structure associated with the wall of the heat-shrinkable sleeve, with the non-adhesive metallized strip sandwiched between the face adhesive for the tear strip and the inner face of the sleeve;
  • FIG. 4 illustrates different types of objects, here containers with closure device, equipped with a security envelope of the aforementioned type
  • FIG. 5 is a detail section to better distinguish the arrangement of the tear tape surrounding the metallized identification tape, pressed against the outer wall of the object wrapped by the wall of the heat-shrinkable sleeve, with in addition a detection antenna sandwiched between the metallized strip and the adhesive face of the tear strip;
  • FIG. 6 is a perspective view illustrating a second embodiment of the invention, according to which the tear strip enveloping on both sides the metallized identification strip is arranged in a circumferential direction;
  • FIG. 7 and 8 illustrate two objects coated with an envelope of the type of that of Figure 6, heat-retracted on the body of the associated object.
  • FIG. 1 illustrates a safety envelope 20 according to the invention, said envelope being constituted by a sleeve 21 made of heat-shrinkable plastic, which is open at its two ends, said sleeve being shown not perfectly cylindrical, but in the form of an open sheath with two end folds, to recall that this type of sleeve is obtained by cutting a flattened sheath unwound from a coil.
  • the sleeve 21 is produced from a continuous sheath itself obtained by putting edge to edge a film folded back on itself, with sealing at the level of the overlap zone, by forming a noted flap. 28.
  • the sleeve 21 is equipped, on its internal face, denoted 21.1, with a tear strip 22 and a metallized identification strip 23.
  • the metallized strip 23 is non-adhesive, and it is sandwiched between the internal face 21.1 of the sleeve 21 and an adhesive face of the tear strip 22, this tear strip 22 projecting from both sides of the metallized strip 23 so as to adhere to the internal face of the sleeve 21 by zones located on either side of said metallized strip.
  • FIG. 3 allows a better understanding of the multilayer arrangement, with the sandwiching of the metallized identification strip 23, which is preferably a holographic strip, between the adhesive face denoted 22.2 of the tear strip 22 , and the internal face 21.1 of the wall of the heat-shrinkable sleeve.
  • the representation of Figure 3 is of course only a schematic representation, the bulging of the strip tear-off 22 enveloping the metallized strip 23 being in practice almost insignificant, insofar as the metallized strip has a thickness of the order of 40 to 60 ⁇ m.
  • the adhesive coming from the adhesive face 22.2 of the tear strip 22 will actually be present along the parallel edges of the metallized identification strip 23.
  • the metallized strip 23 is thus perfectly pressed against the internal face 21.1 of the sleeve 21, so that, for an observer looking at the external face 21.2 of the sleeve 21, the optical value for the legibility of the part metallized strip 23 is optimal, being in no way disturbed by any presence of varnish or glue.
  • FIG. 3 also makes it possible to clearly distinguish the zones 30 by which the tear strip 22 adheres to the internal face 21.1 of the sleeve 21, on either side of the metallized identification strip 23.
  • the metallized strip 23 has its metallized face denoted 23.1, facing the adhesive face 22.2 of the tear strip 22.
  • the other face 23.2 of the metallized strip 23 remains applied, without interposition of glue or varnish, against the internal face 21.1 of the sleeve 21, and the metallized face 23.1 including the holographic function of the strip, is entirely concerned by the adhesive present on the adhesive face 22.2 of the tear strip 22.
  • Such a arrangement considerably increases the fragility of the construction, and induces automatic delamination in the event of fraudulent manipulation.
  • the internal face 22.1 of the tear strip 22 is not adhesive, so that, during the retraction of the sleeve on the object concerned, there is no adhesion between the external wall - the object and the tear strip. As a result, any interference which risks disturbing the holographic part trapped between the tear strip and the wall of the sleeve is avoided.
  • any type of existing holographic strip with a complex bi or three-dimensional holographic pattern and / or incorporating a reading code, without in any way being limited to a particular width of this strip. It will in all cases optimal optical efficiency, allows ⁇ as to distinguish the holographic pattern, and read with complete reliability the possible code of integrated reading in the holographic stripe.
  • a printed strip 6 to 10 mm wide will be used for the metallized strip 23, in which case the tear strip will of course be of wider width, so as to project at least 2mm on each side of the metallic strip 23.
  • the absence of adhesive at the interface between the metallized strip and the wall of the sleeve preserves the visual integrity of the hologram, and this regardless of the type of image incorporated, because any risky interference is eliminated. to alter the metallization during the shrinkage of the sleeve.
  • FIG. 4 illustrates several types of objects, by way of example, which are here containers denoted 10, all coated with a security envelope 20 which is of the type previously described. Acting in this case of containers with a closure device, the heat-shrinkable sleeve 21 surrounds a part of each container in the region of said container. closing device, to ensure inviolability.
  • a container 10 is illustrated, the body 11 of which is surmounted by a possibly screwed cap 12, while in b) the container 10 is in the form of a bottle, the body 11 of which is surmounted by a closure cap 12, and that in c) the container 10 is a bottle whose body is surmounted by a screwed or clipped stopper 12.
  • the container 10 is equipped with a heat-shrunk safety envelope 20 on its wall by closely surrounding the part of the container corresponding to the area of the closure device.
  • an envelope is shown, the upper edge of which covers with a crown marked 29 the upper face of the capsule or cap 12.
  • FIG. 5 The section on a larger scale in FIG. 5 makes it possible to clearly distinguish the multilayer arrangement at the level of the tear strip 22 and the metallized identification strip 23.
  • a detection antenna or a chip between the metallized strip and the tear-off strip: a metallic wire of antenna 50 is sandwiched here between the metallized strip 23 and the adhesive face 22.2 of the tear-off strip 22
  • the aforementioned impression 25 on at least one face of the tear strip 22 gives in this case an additional advantage by hiding the antenna or the chip thus integrated in the sleeve.
  • the rear strip chage 22 and the metallized strip 23 extended along a generatrix of the sleeve 21, over the entire height of the latter. It is however possible, as a variant, to provide that the tear strip 22 and the metallized strip 23 extend circumferentially, over the entire internal periphery of the sleeve 21.
  • FIG. 6 Such an alternative embodiment is illustrated in Figure 6, where we recognize, with the same references as above, the tear strip 22 sandwiched on either side of its edges, the metallized strip d 'identification 23.
  • This strip 23 is shown in gray, it being understood that it is seen by transparency through the wall of the sleeve 21. It has also been illustrated the presence of two lines of micro-perforations 27, on either side of the tear strip 22.
  • the gripping tab 24 is not an extension of the tear strip 22, but is obtained by cutting, here substantially in arc of circle, denoted 31, practiced in the wall of the sleeve 21.
  • FIGS. 7 and 8 illustrate two objects 10 coated with a heat-shrunk safety envelope thereon, the structure of which corresponds to that previously described with reference to FIG. 6.
  • FIG. 7 thus illustrates a packaging envelope 20, enveloping an object 10 which is a fragrance diffuser, the body 11 of which is distinguished by a cap forming a pusher 13 equipped with a spray nozzle 14, the circular connection zone corresponding to a significant variation in cross section between the body 11 and the cap 13.
  • the tear strip 22 and the metallized strip 23 thus extend circumferentially, over the entire internal periphery of the sleeve 21, here at the level of the large variation in section between the body and the cap. the object. It is then advantageous to provide that the tear strip 22 is made of heat-shrinkable plastic, so as to have the same transverse shrinkage as the wall of the sleeve 21. It may also be provided that the metallized strip 23 is, it also, produced from a strip of ther o-retractable plastic material, so as also to have the same transverse shrinkage as the wall of the sleeve 21.
  • FIG. 8 illustrates another object 10 such as a bottle for which the heat-shrink sleeve 21 simultaneously performs a labeling function and a tamper-evident function.
  • the heat-shrinkable tear strip 22, sandwiching the metallized strip 23, can precisely be provided at the lower edge of the stopper which is for example screwed onto the body of the bottle, allowing a clean and homogeneous opening over 360 °.
  • the labeling function is then permanently preserved by the lower portion 21.10 of the heat-shrink sleeve which remains on the main body of the bottle, after detachment of the tear strip 22.
  • the upper portion of the sleeve 21, concerning the area of the stopper of the bottle, is noted 21.20.
  • a gripping tab 24 is also provided, connecting to two lines of micro-perforations. 27, on either side of the adhesion zones of the tear strip 22 projecting from each of the parallel edges of the non-adhesive metallized strip 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Burglar Alarm Systems (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Gloves (AREA)
  • Closures For Containers (AREA)
  • Laminated Bodies (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

The invention concerns a safety envelope (20) formed by a sleeve (21) made of heat shrinkable plastic material, equipped on its inner surface with a tear strip (22) and a metal-coated identifying strip (23). The invention is characterised in that the metal-coated strip (23) is non-adhesive, and is sandwiched between the sleeve (21) inner surface and an adhesive surface of the tear strip (22). The tear strip (22) overlaps on the metal-coated strip (23) two sides so as to adhere to the sleeve (21) internal surface via zones located on either side of the metal-coated strip (23).

Description

ENVELOPPE DE SECURITE CONSTITUEE PAR UN MANCHON EN MATIERE THERMORETRACTABLE EQUIPE D'UNE BANDE METALLISEE D'IDENTTFICAΗONSAFETY ENCLOSURE CONSISTING OF A SLEEVE OF HEAT SHRINKABLE MATERIAL EQUIPPED WITH A METALLIZED IDENTIFICATION STRIP
La présente invention concerne le domaine de l'emballage d'objets, et plus particulièrement les emballages réalisés au moyen d'une enveloppe constituée par un manchon en matière plastique thermorétractable destiné à être rétracté sur le ou les objets concernés. 0 On utilise depuis une trentaine d'années la technique d'emballage d'un ou de plusieurs objets à partir d'un manchon thermorétractable réalisé sous la forme d'un manchon qui est enfilé sur le ou les objets à emballer, puis thermorétracté sur ces objets. 5 Pour l'ouverture de l'emballage, il est bien connu d'utiliser une bande d'arrachage équipant le manchon thermorétractable sur la face interne de celui-ci, ladite bande étant la plupart du temps agencée selon une génératrice du manchon, et beaucoup plus rarement selon une 0 direction circonférentielle dudit manchon. Selon le cas, il peut être prévu une ou deux lignes de perforations au voisinage de la bande d'arrachage, afin de faciliter la déchirure de la paroi du manchon lorsqu'une traction est exercée en tirant sur une extrémité de la bande d' arracha- 5 ge. Les manchons thermorétractables utilisés peuvent servir à supporter des inscriptions, éventuellement aussi à englober une notice d'utilisation (on agence alors une poche délimitée par deux lignes de scellage parallèles agencées selon des génératrices du manchon) , ou à assurer 0 l'inviolabilité de l'objet, notamment en association à un système d'ouverture de l'objet (couvercle ou bouchon), ou encore à assurer une protection anti-vol de l'objet en supportant par exemple un filament formant antenne électromagnétique . L'invention concerne plus particulièrement une enveloppe de sécurité du type constitué par un manchon en matière plastique thermorétractable apte à entourer étroitement une partie de l'objet concerné, ledit manchon étant en outre équipé, sur sa face interne, d'une bande d'arrachage et d'une bande métallisée d'identification qui s'étend parallèlement à ladite bande d'arrachage.The present invention relates to the field of packaging objects, and more particularly packaging produced by means of an envelope constituted by a sleeve made of heat-shrinkable plastic material intended to be retracted on the object or objects concerned. 0 The technique of wrapping one or more objects from a heat-shrinkable sleeve produced in the form of a sleeve which has been threaded over the object or objects to be packaged, and then heat-shrunk over 30 years, has been used. these objects. 5 For opening the packaging, it is well known to use a tear strip fitted to the heat-shrinkable sleeve on the internal face of the latter, said strip being most of the time arranged along a generatrix of the sleeve, and much more rarely in a circumferential direction of said sleeve. Depending on the case, one or two perforation lines may be provided in the vicinity of the tear strip, in order to facilitate tearing of the wall of the sleeve when traction is exerted by pulling on one end of the tear strip. - 5 ge. The heat-shrinkable sleeves used can be used to support inscriptions, possibly also to include a user manual (a pocket delimited by two parallel sealing lines arranged along generators of the sleeve is then arranged), or to ensure the inviolability of the object, in particular in association with an object opening system (cover or plug), or even to provide anti-theft protection of the object by supporting, for example, a filament forming an electromagnetic antenna. The invention relates more particularly to a security envelope of the type consisting of a sleeve made of heat-shrinkable plastic material capable of closely surrounding a part of the object concerned, said sleeve being further equipped, on its internal face, with a strip of tear-off and a metallized identification strip which extends parallel to said tear-off strip.
Pour solidariser la bande d'arrachage à la paroi du manchon, on prévoit en général une liaison adhésive, ainsi que cela était déjà le cas pour les films de suremballage équipés d'une bande d'arrachage passant autour de l'objet emballé (voir par exemple les documents US-A-3 362 617, EP-A-0 223 498, et GB-A-2 123 376) . Plus récemment, on a cherché à cumuler plusieurs fonctions avec un même manchon, en prévoyant par exemple une bande d'arrachage portant un filament métallique constituant une antenne pour un système électronique de surveillance fonctionnant sur un principe de détection magnétique, comme illustré dans le document EP-A-0 698 562 de la demanderesse. Il convient d'ailleurs d'observer que, dans le document EP-A-0 698 562 précité, le filament métallique dont il est question ne saurait être comparé à une bande métallisée d'identification,- de plus, dans la variante des figures 7a et 7b, le filament pris en sandwich entre la bande d'arrachage et la paroi interne du manchon est entouré de colle, en particulier entre le filament et la paroi du manchon, ce qui n'est pas gênant pour un filament métallique constituant une antenne fonctionnant sur un principe de résonance magnétique, mais ce qui le serait si on voulait pouvoir effectuer une lecture optique par transparence à travers la paroi du manchon.To secure the tear strip to the wall of the sleeve, an adhesive bond is generally provided, as was already the case for overwrap films fitted with a tear strip passing around the packaged object (see for example documents US-A-3 362 617, EP-A-0 223 498, and GB-A-2 123 376). More recently, attempts have been made to combine several functions with the same sleeve, for example by providing a tear strip carrying a metal filament constituting an antenna for an electronic monitoring system operating on a magnetic detection principle, as illustrated in the document. EP-A-0 698 562 to the applicant. It should also be observed that, in the aforementioned document EP-A-0 698 562, the metallic filament in question cannot be compared to a metallized identification strip, - moreover, in the variant of the figures 7a and 7b, the filament sandwiched between the tear strip and the internal wall of the sleeve is surrounded by adhesive, in particular between the filament and the wall of the sleeve, which is not a problem for a metallic filament constituting a antenna operating on a magnetic resonance principle, but what would be if we wanted to be able to perform an optical reading by transparency through the wall of the sleeve.
Il a été également proposé de réaliser des bandes d'arrachage incluant un hologramme, la bande à hologramme étant collée sur la face interne du manchon, et des perforations étant prévues dans la bande d'arrachage et dans la paroi du manchon pour faciliter l'ouverture par traction sur ladite bande d'arrachage (voir par exemple le document GB-A-2 273 492) . Une telle bande hologramme auto- adhésive présente l'inconvénient d'être onéreuse à la fabrication. En plus, du fait de la présence d'adhésif sur la totalité de la face métallisée de la bande hologramme venant au contact de la face interne du manchon, il y a nécessairement une présence plus ou moins importante de matière adhésive entre cette face métallisée et la paroi interne du manchon, avec souvent en plus des traces plus ou moins importantes de vernis : ces traces de colle et/ou de vernis altèrent toujours la valeur optique que l'on cherche à obtenir par transparence à travers la paroi du manchon, ce qui affecte la lisibilité, par l'extérieur, de l'élément hologramme, et augmente par suite le risque de ne pas reconnaître des copies sauvages. Enfin, l'adhésion à l'interface entre la bande hologramme et la face interne du film a un effet négatif sur 1 ' intégrité visuelle de l'hologramme car la rétraction du film casse plus ou moins la métallisation dudit hologramme.It has also been proposed to produce tear strips including a hologram, the hologram strip being bonded to the internal face of the sleeve, and perforations being provided in the tear strip and in the wall of the sleeve to facilitate opening by pulling on said tear strip (see for example document GB-A-2 273 492). Such a self-adhesive hologram tape has the disadvantage of being expensive to manufacture. In addition, due to the presence of adhesive on the entire metallized face of the hologram strip coming into contact with the internal face of the sleeve, there is necessarily a more or less significant presence of adhesive material between this metallized face and the internal wall of the sleeve, often with more or less significant traces of varnish: these traces of glue and / or varnish always alter the optical value which one seeks to obtain by transparency through the wall of the sleeve, this which affects the readability, from the outside, of the hologram element, and consequently increases the risk of not recognizing wild copies. Finally, adhesion to the interface between the hologram strip and the internal face of the film has a negative effect on the visual integrity of the hologram because the shrinkage of the film more or less breaks the metallization of said hologram.
Une autre technique consiste à prévoir une bande de sécurité indicatrice d'effraction comprenant un substrat incluant un hologramme, chaque surface du substrat présentant une couche adhésive, et l'élément de sécurité étant fixé à la paroi du manchon par l'une de ses couches adhésives (voir par exemple le document GB-A-2 298 391) . Une telle technique à double liaison adhésive, c'est-à-dire à la fois sur la face du manchon et sur la paroi de l'objet, procure naturellement l'avantage d'une détection fiable en cas de manipulation anormale exercée sur le manchon ou l'objet. Cependant, cette technique reste onéreuse et délicate à mettre en oeuvre. De plus, on retrouve les graves inconvénients précédents résultant de la présence de matière adhésive entre 1 ' élément hologramme et la face interne de la paroi du manchon thermorétracta- ble. La présence de colle sur toute la largeur de la bande hologramme induit en effet inévitablement une interférence qui altère la valeur optique liée à la lisibilité de 1 ' élément hologramme . Il convient de noter que dans le document GB-A-2 298 391 précité, la bande d'arrachage est disposée au voisinage de, et parallèlement à, la bande hologramme, de sorte que cette bande d'arrachage sert uniquement à assurer la fonction traditionnelle d'aide à la déchirure de l'enveloppe, sans intervenir en rien dans la fonction de sécurité qui est assurée par la bande hologramme .Another technique consists in providing a tamper-evident security strip comprising a substrate including a hologram, each surface of the substrate having an adhesive layer, and the security element being fixed to the wall of the sleeve by one of its layers. adhesive (see for example GB-A-2 298 391). Such a technique with double adhesive bond, that is to say both on the face of the sleeve and on the wall of the object, naturally provides the advantage of reliable detection in the event of abnormal manipulation exerted on the sleeve or object. However, this technique remains expensive and difficult to implement. In addition, we find the above serious drawbacks resulting from the presence of adhesive material between one hologram element and the internal face of the wall of the heat-shrink sleeve. corn. The presence of glue over the entire width of the hologram strip inevitably induces interference which alters the optical value linked to the readability of the hologram element. It should be noted that in the aforementioned document GB-A-2 298 391, the tear strip is arranged in the vicinity of, and parallel to, the hologram strip, so that this tear strip serves only to ensure the function traditional aid for tearing the envelope, without intervening in any way in the security function which is ensured by the hologram strip.
Il a par ailleurs été proposé de réaliser des enveloppes de sécurité dont le manchon est équipé, sur sa face interne, d'un élément holographique et d'une bande d'arrachage passant derrière cet élément holographique, afin de déchirer ledit élément lors de 1 ' ouverture de l'enveloppe effectuée en tirant sur la bande (voir par exemple le document FR-A-2 754 375 de la demanderesse) . Dans ce cas, la paroi interne du manchon porte un élément holographique réalisé sous la forme d'une pastille élargie qui est collée directement contre la paroi interne du manchon, cette pastille comportant une couche de métallisation holographique portée par une couche de support en matière plastique transparente adhérant à la face interne du manchon. Un tel élément holographique est destiné à constituer une certification d'origine du produit. Cependant, une telle enveloppe ne procure pas une véritable indication d'effraction, notamment du fait que le manchon peut être enlevé par glissement ou par découpe, puis remplacé par une autre enveloppe équipée intérieurement d'un autre élément holographique identique ou analogue à l'élément d'origine. Dans certains cas, le fraudeur peut même décoller l'élément holographique d'origine si celui-ci est très difficile à reproduire, afin de le recoller sur un nouveau support qui est ensuite replacé sur l'objet.It has also been proposed to produce security envelopes, the sleeve of which is equipped, on its internal face, with a holographic element and with a tear strip passing behind this holographic element, in order to tear said element during 1 opening of the envelope by pulling on the strip (see for example document FR-A-2 754 375 by the applicant). In this case, the inner wall of the sleeve carries a holographic element produced in the form of an enlarged patch which is bonded directly against the inner wall of the sleeve, this patch comprising a holographic metallization layer carried by a plastic support layer. transparent adhering to the internal face of the sleeve. Such a holographic element is intended to constitute a certification of origin of the product. However, such an envelope does not provide a true indication of tampering, in particular the fact that the sleeve can be removed by sliding or by cutting, then replaced by another envelope fitted internally with another holographic element identical or similar to the original item. In some cases, the fraudster can even take off the original holographic element if it is very difficult to reproduce, in order to stick it on a new medium which is then replaced on the object.
L'invention vise à concevoir une enveloppe de sécurité à bande d'arrachage et à bande métallisée d'iden¬ tification qui soit capable de combiner les avantages des techniques précitées, sans en présenter les inconvénients, en étant en particulier économique à réaliser, et surtout en procurant une valeur optique parfaite pour la lisibilité à travers la paroi du manchon thermorétractable.The invention aims to design a security envelope with tear strip and metallized strip iden ¬ tification that is able to combine the advantages of the above techniques, without having the disadvantages, being especially economic to produce, and especially by providing a perfect optical value for legibility through the wall of the heat-shrinkable sleeve.
Ce problème est résolu conformément à 1 ' inven- tion, grâce à une enveloppe de sécurité pour objets, notamment pour des récipients à dispositif de fermeture, du type constitué par un manchon en matière plastique thermorétractable apte à entourer étroitement une partie de l'objet, ledit manchon étant en outre équipé, sur sa face interne, d'une bande d'arrachage et d'une bande métallisée d'identification qui s'étend parallèlement à ladite bande d'arrachage, ladite enveloppe étant remarquable par le fait que la bande métallisée est non-adhésive, et qu'elle est prise en sandwich entre la face interne du manchon et une face adhésive de la bande d'arrachage, la bande d'arrachage débordant des deux côtés de la bande métallisée de façon à adhérer à la face interne du manchon par des zones situées de part et d'autre de ladite bande métallisée.This problem is solved in accordance with the invention, by means of a security envelope for objects, in particular for containers with a closure device, of the type constituted by a sleeve made of heat-shrinkable plastic material capable of closely surrounding a part of the object. , said sleeve being further equipped, on its internal face, with a tear strip and a metallized identification strip which extends parallel to said tear strip, said envelope being remarkable in that the metallized strip is non-adhesive, and it is sandwiched between the internal face of the sleeve and an adhesive face of the tear strip, the tear strip projecting on both sides of the metallized strip so as to adhere to the internal face of the sleeve by zones situated on either side of said metallized strip.
Ainsi, contrairement aux techniques antérieures rappelées plus haut, la bande métallisée est parfaitement plaquée contre la face interne du manchon thermorétractable sans la moindre présence de vernis ou de colle venant altérer la valeur optique de la lisibilité par transparence à travers la paroi dudit manchon. La bande métallisée d'identification, qui peut être une bande holographique, est parfaitement maintenue en position par la bande d'arrachage qui l'enveloppe entièrement, en particulier de part et d'autre des bords de celle-ci, sans que l'on ait eu à prévoir une face adhésive pour la bande métallisée. On peut donc utiliser des bandes holographiques existantes, avec le motif désiré de tout type complexe bi ou tridimensionnel, sans avoir à déposer de la matière adhésive sur l'une de leurs faces.Thus, unlike the prior techniques mentioned above, the metallized strip is perfectly pressed against the internal face of the heat-shrinkable sleeve without the slightest presence of varnish or glue altering the optical value of the legibility by transparency through the wall of said sleeve. The metallized identification strip, which can be a holographic strip, is perfectly held in position by the tear strip which completely envelops it, in particular on either side of the edges thereof, without the we had to provide an adhesive face for the metallic strip. So we can use existing holographic bands, with the desired pattern of any complex two or three dimensional type, without having to deposit adhesive material on one of their faces.
De préférence, la bande métallisée présente sa face métallisée tournée vers la face adhésive de la bande d ' arrachage .Preferably, the metallized strip has its metallized face turned towards the adhesive face of the tear strip.
Grâce à cette caractéristique, on augmente considérablement la fragilité à la destruction pour la partie métallisée, dans la mesure où la moindre manipula- tion de la bande d'arrachage a pour effet immédiat de provoquer un délaminage entraînant la destruction au moins partielle de la partie métallisée, notamment holographique. On renforce donc l'effet d'auto-destruction en cas de manipulation frauduleuse sur l'objet enveloppé. On pourra également faire en sorte qu'au moins une ligne de micro-perforations soit prévue dans la paroi du manchon au voisinage de, ou également dans, la bande d'arrachage, parallèlement à cette dernière. Ces microperforations ne sont aucunement obligatoires, mais leur présence peut aider à une ouverture aisée de l'enveloppe, même pour des bandes d'arrachage de grande largeur (cette grande largeur étant la conséquence d'une largeur importante pour envelopper la bande métallisée d'identification utilisée) . On pourra en outre prévoir que l'une au moins des deux faces de la bande d'arrachage soit imprimée. Cette impression de la face intérieure et/ou extérieure de la bande d'arrachage procure un effet supplémentaire d'indication d'effraction. Conformément à un premier mode d'exécution de l'invention, la bande d'arrachage et la bande métallisée s'étendent selon une génératrice du manchon, sur toute la hauteur de celui-ci.Thanks to this characteristic, the brittleness at destruction for the metallized part is considerably increased, insofar as the slightest manipulation of the tear strip has the immediate effect of causing delamination, leading to at least partial destruction of the part metallic, especially holographic. This therefore reinforces the self-destruction effect in the event of fraudulent manipulation of the wrapped object. We can also ensure that at least one line of micro-perforations is provided in the wall of the sleeve in the vicinity of, or also in, the tear strip, parallel to the latter. These microperforations are in no way mandatory, but their presence can help the envelope to open easily, even for tear strips of large width (this large width being the consequence of a large width to wrap the metallized strip of identification used). Provision may also be made for at least one of the two faces of the tear strip to be printed. This impression of the inner and / or outer face of the tear strip provides an additional effect of tampering indication. In accordance with a first embodiment of the invention, the tear strip and the metallized strip extend along a generatrix of the sleeve, over the entire height of the latter.
En variante, la bande d'arrachage et la bande métallisée s'étendent circonférentiellement , sur toute la périphérie interne du manchon. On pourra alors prévoir que la bande d'arrachage est réalisée en matière plastique thermorétractable, de façon à présenter le même retrait transversal que la paroi du manchon. En particulier, la bande métallisée pourra de même être réalisée à partir d'une bande de matière plastique thermorétractable, de façon à présenter aussi le même retrait transversal que la paroi du manchon.Alternatively, the tear strip and the metallized strip extend circumferentially, over the entire inner periphery of the sleeve. We can then provide that the tear strip is made of heat-shrinkable plastic, so as to have the same transverse shrinkage as the wall of the sleeve. In particular, the metallized strip can likewise be produced from a strip of heat-shrinkable plastic, so as to also have the same transverse shrinkage as the wall of the sleeve.
On pourra enfin prévoir qu'une antenne de détec- tion ou une puce soit prise en sandwich entre la bande métallisée et la face adhésive de la bande d'arrachage.Finally, provision may be made for a detection antenna or a chip to be sandwiched between the metallized strip and the adhesive face of the tear strip.
D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lumière de la description qui va suivre et des dessins annexés, concer- nant un mode de réalisation particulier, en référence aux figures où :Other characteristics and advantages of the invention will appear more clearly in the light of the description which follows and of the appended drawings, concerning a particular embodiment, with reference to the figures where:
- la figure 1 est une vue en perspective illustrant une enveloppe de sécurité conforme à l'invention, dont la bande d'arrachage qui emprisonne la bande métalli- sée d'identification s'étend selon une génératrice du manchon thermorétractable, sur toute la hauteur de celui- ci;- Figure 1 is a perspective view illustrating a security envelope according to the invention, the tear strip which traps the metallized identification strip extends along a generatrix of the heat-shrinkable sleeve, over the entire height of it;
- la figure 2 est une vue en plan de la surface intérieure développée du manchon constitutif de l'enveloppe précitée, avec en outre une impression (représentée par la lettre S) sur une face de la bande d'arrachage collée contre la paroi interne du manchon ;- Figure 2 is a plan view of the developed inner surface of the sleeve constituting the aforementioned envelope, with an imprint (represented by the letter S) on one side of the tear strip glued against the inner wall of the muff ;
- la figure 3 est une coupe selon III -III de la figure 2, à une échelle très agrandie, permettant de mieux distinguer la structure multicouche associée à la paroi du manchon thermorétractable, avec la bande métallisée non- adhésive prise en sandwich entre la face adhésive de la bande d'arrachage et la face interne du manchon ;- Figure 3 is a section on III -III of Figure 2, on a very enlarged scale, to better distinguish the multilayer structure associated with the wall of the heat-shrinkable sleeve, with the non-adhesive metallized strip sandwiched between the face adhesive for the tear strip and the inner face of the sleeve;
- la figure 4 illustre différents types d'objets, ici des récipients à dispositif de fermeture, équipés d'une enveloppe de sécurité du type précité ;- Figure 4 illustrates different types of objects, here containers with closure device, equipped with a security envelope of the aforementioned type;
- la figure 5 est une coupe de détail permettant de mieux distinguer l'agencement de la bande d'arrachage enveloppant la bande métallisée d'identification, plaquée contre la paroi externe de l'objet emballé par la paroi du manchon thermorétractable, avec en outre une antenne de détection prise en sandwich entre la bande métallisée et la face adhésive de la bande d'arrachage ;- Figure 5 is a detail section to better distinguish the arrangement of the tear tape surrounding the metallized identification tape, pressed against the outer wall of the object wrapped by the wall of the heat-shrinkable sleeve, with in addition a detection antenna sandwiched between the metallized strip and the adhesive face of the tear strip;
- la figure 6 est une vue en perspective illus- trant un deuxième mode d'exécution de l'invention, selon lequel la bande d'arrachage enveloppant de part et d'autre la bande métallisée d'identification est agencée selon une direction circonférentielle ;- Figure 6 is a perspective view illustrating a second embodiment of the invention, according to which the tear strip enveloping on both sides the metallized identification strip is arranged in a circumferential direction;
- la figure 7 et 8 illustrent deux objets revêtus d'une enveloppe du type de celle de la figure 6, thermoré- tractée sur le corps de l'objet associé.- Figure 7 and 8 illustrate two objects coated with an envelope of the type of that of Figure 6, heat-retracted on the body of the associated object.
La figure 1 illustre une enveloppe de sécurité 20 conforme à l'invention, ladite enveloppe étant constituée par un manchon 21 en matière plastique thermorétractable, qui est ouvert à ses deux extrémités, ledit manchon étant représenté non pas parfaitement cylindrique, mais sous forme d'une gaine ouverte avec deux plis d'extrémité, pour rappeler que ce type de manchon est obtenu par tronçonnage d'une gaine aplatie déroulée d'une bobine. De façon classique, le manchon 21 est réalisé à partir d'une gaine continue elle-même obtenue par mise bord à bord d'un film replié sur lui-même, avec scellage au niveau de la zone de recouvrement, en formant un rabat noté 28.FIG. 1 illustrates a safety envelope 20 according to the invention, said envelope being constituted by a sleeve 21 made of heat-shrinkable plastic, which is open at its two ends, said sleeve being shown not perfectly cylindrical, but in the form of an open sheath with two end folds, to recall that this type of sleeve is obtained by cutting a flattened sheath unwound from a coil. Conventionally, the sleeve 21 is produced from a continuous sheath itself obtained by putting edge to edge a film folded back on itself, with sealing at the level of the overlap zone, by forming a noted flap. 28.
Le manchon 21 est équipé, sur sa face interne, notée 21.1, d'une bande d'arrachage 22 et d'une bande métallisée d'identification 23.The sleeve 21 is equipped, on its internal face, denoted 21.1, with a tear strip 22 and a metallized identification strip 23.
Conformément à une caractéristique essentielle de l'invention, la bande métallisée 23 est non-adhésive, et elle est prise en sandwich entre la face interne 21.1 du manchon 21 et une face adhésive de la bande d'arrachage 22, cette bande d'arrachage 22 débordant des deux côtés de la bande métallisée 23 de façon à adhérer à la face interne du manchon 21 par des zones situées de part et d'autre de ladite bande métallisée. On distingue également sur la figure 1 une extrémité 24 de préhension de la bande d'arrachage, ainsi qu'une double rangée de micro-perforations 27 agencée ici au voisinage de la bande d'arrachage 22, et parallèlement à cette dernière.In accordance with an essential characteristic of the invention, the metallized strip 23 is non-adhesive, and it is sandwiched between the internal face 21.1 of the sleeve 21 and an adhesive face of the tear strip 22, this tear strip 22 projecting from both sides of the metallized strip 23 so as to adhere to the internal face of the sleeve 21 by zones located on either side of said metallized strip. We also distinguish in Figure 1 an end 24 for gripping the tear strip, as well as a double row of micro-perforations 27 arranged here in the vicinity of the tear strip 22, and parallel to the latter.
Lorsque le manchon 21 est à plat, sa face interne 21.1 se présente conformément à l'illustration donnée à la figure 2. On reconnaît sur cette figure la présence de la bande d'arrachage 22 prenant en sandwich la bande métallisée d'identification 23, laquelle est non-adhésive et confinée entre la face interne 21.1 de la paroi du manchon, et la face adhésive de la bande d'arrachage 22. On distingue également deux bandes d'extrémité notées 28', 28'', qui sont superposées lorsque le manchon est constitué, la zone de recouvrement correspondant à un scellage au niveau de la zone précitée 28 formant ledit manchon. Il est intéressant de noter en outre sur la figure 2 la présence d'une impression 25, ici symbolisée, à titre d'exemple seulement, par la lettre S . Il est aisé de comprendre que 1 ' impression de l'une au moins des deux faces de la bande d'arrachage 22 permet de conférer un effet d'indicateur d'effraction extrêmement intéressant. On arrive alors à combiner une fonction supplémentaire venant s'ajouter à celle de la certification d'origine.When the sleeve 21 is flat, its internal face 21.1 is presented in accordance with the illustration given in FIG. 2. This figure recognizes the presence of the tear strip 22 sandwiching the metallized identification strip 23, which is non-adhesive and confined between the internal face 21.1 of the wall of the sleeve, and the adhesive face of the tear strip 22. There are also two end strips denoted 28 ', 28' ', which are superimposed when the sleeve is formed, the overlap zone corresponding to a seal at the aforementioned zone 28 forming said sleeve. It is interesting to note in addition in FIG. 2 the presence of an impression 25, here symbolized, by way of example only, by the letter S. It is easy to understand that the printing of at least one of the two faces of the tear strip 22 makes it possible to confer an extremely interesting tamper-indicating effect. We then manage to combine an additional function in addition to that of the original certification.
La coupe de la figure 3 permet de mieux comprendre l'agencement multicouche, avec la prise en sandwich de la bande métallisée d'identification 23, qui est de préférence une bande holographique, entre la face adhésive notée 22.2 de la bande d'arrachage 22, et la face interne 21.1 de la paroi du manchon thermorétractable. La représentation de la figure 3 ne constitue bien entendu qu'une représentation schématique, le bombement de la bande d'arrachage 22 enveloppant la bande métallisée 23 étant en effet dans la pratique à peu près insignifiant, dans la mesure où la bande métallisée présente une épaisseur de l'ordre de 40 à 60 μm. Par suite, bien que cela n'ait pas été représenté pour ne pas surcharger la figure, on est assuré que de l'adhésif provenant de la face adhésive 22.2 de la bande d'arrachage 22 sera en réalité présent le long des bords parallèles de la bande métallisée d'identification 23. La bande métallisée 23 est ainsi parfaitement plaquée contre la face interne 21.1 du manchon 21, de sorte que, pour un observateur regardant la face externe 21.2 du manchon 21, la valeur optique pour la lisibilité de la partie métallisée de la bande 23 est optimale, n'étant aucunement perturbée par une quelconque présence de vernis ou de colle.The section in FIG. 3 allows a better understanding of the multilayer arrangement, with the sandwiching of the metallized identification strip 23, which is preferably a holographic strip, between the adhesive face denoted 22.2 of the tear strip 22 , and the internal face 21.1 of the wall of the heat-shrinkable sleeve. The representation of Figure 3 is of course only a schematic representation, the bulging of the strip tear-off 22 enveloping the metallized strip 23 being in practice almost insignificant, insofar as the metallized strip has a thickness of the order of 40 to 60 μm. Consequently, although this has not been shown so as not to overload the figure, it is ensured that the adhesive coming from the adhesive face 22.2 of the tear strip 22 will actually be present along the parallel edges of the metallized identification strip 23. The metallized strip 23 is thus perfectly pressed against the internal face 21.1 of the sleeve 21, so that, for an observer looking at the external face 21.2 of the sleeve 21, the optical value for the legibility of the part metallized strip 23 is optimal, being in no way disturbed by any presence of varnish or glue.
La figure 3 permet également de bien distinguer les zones 30 par lesquelles la bande d'arrachage 22 adhère à la face interne 21.1 du manchon 21, de part et d'autre de la bande métallisée d'identification 23. On notera égale- ment sur la figure 3 le fait que la bande métallisée 23 présente sa face métallisée notée 23.1, tournée vers la face adhésive 22.2 de la bande d'arrachage 22. Ainsi, l'autre face 23.2 de la bande métallisée 23 reste appliquée, sans interposition de colle ou de vernis, contre la face interne 21.1 du manchon 21, et la face métallisée 23.1 incluant la fonction holographique de la bande, est en totalité concernée par l'adhésif présent sur la face adhésive 22.2 de la bande d'arrachage 22. Un tel agencement augmente considérablement la fragilité de la construction, et induit un délaminage automatique en cas de manipulation frauduleuse .FIG. 3 also makes it possible to clearly distinguish the zones 30 by which the tear strip 22 adheres to the internal face 21.1 of the sleeve 21, on either side of the metallized identification strip 23. It will also be noted on Figure 3 the fact that the metallized strip 23 has its metallized face denoted 23.1, facing the adhesive face 22.2 of the tear strip 22. Thus, the other face 23.2 of the metallized strip 23 remains applied, without interposition of glue or varnish, against the internal face 21.1 of the sleeve 21, and the metallized face 23.1 including the holographic function of the strip, is entirely concerned by the adhesive present on the adhesive face 22.2 of the tear strip 22. Such a arrangement considerably increases the fragility of the construction, and induces automatic delamination in the event of fraudulent manipulation.
Il est important de noter que la face interne 22.1 de la bande d'arrachage 22 n'est pas adhésive, de sorte que, lors de la rétraction du manchon sur l'objet concerné, il n'y a aucune adhérence entre la paroi exté- rieure de l'objet et la bande d'arrachage. Par suite, on évite toute interférence risquant de perturber la partie holographique emprisonnée entre la bande d'arrachage et la paroi du manchon. Ainsi, grâce à cette agencement, on pourra utiliser tout type de bande holographique existant, avec un motif holographique complexe bi ou tridimensionnel et/ou intégrant un code de lecture, sans être en plus aucunement limité à une largeur particulière de cette bande. On aura dans tous les cas une efficacité optique optimale, permet¬ tant de bien distinguer le motif holographique, et de lire avec une totale fiabilité l'éventuel code de lecture intégré à la bande holographique. Dans la pratique, on utilisera une bande imprimée de 6 à 10 mm de large pour la bande métallisée 23, auquel cas la bande d'arrachage sera bien entendu de largeur plus grande, de façon à déborder d'au moins 2mm de chaque côté de la bande métallisée 23.It is important to note that the internal face 22.1 of the tear strip 22 is not adhesive, so that, during the retraction of the sleeve on the object concerned, there is no adhesion between the external wall - the object and the tear strip. As a result, any interference which risks disturbing the holographic part trapped between the tear strip and the wall of the sleeve is avoided. Thus, thanks to this arrangement, it is possible to use any type of existing holographic strip, with a complex bi or three-dimensional holographic pattern and / or incorporating a reading code, without in any way being limited to a particular width of this strip. It will in all cases optimal optical efficiency, allows ¬ as to distinguish the holographic pattern, and read with complete reliability the possible code of integrated reading in the holographic stripe. In practice, a printed strip 6 to 10 mm wide will be used for the metallized strip 23, in which case the tear strip will of course be of wider width, so as to project at least 2mm on each side of the metallic strip 23.
De plus, l'absence d'adhésif à l'interface entre la bande métallisée et la paroi du manchon préserve l'intégrité visuelle de l'hologramme, et ce quel que soit le type d'image incorporé, car on supprime toute interférence risquant d'altérer la métallisation lors de la rétraction du manchon.In addition, the absence of adhesive at the interface between the metallized strip and the wall of the sleeve preserves the visual integrity of the hologram, and this regardless of the type of image incorporated, because any risky interference is eliminated. to alter the metallization during the shrinkage of the sleeve.
Les deux lignes de micro-perforations 27 repré- sentées sur les figures 1 et 2 , mais pas sur la figure 3, pourraient en variante être prévues pour passer dans la bande d'arrachage 22 elle-même. Dans ce cas, les microperforations traversent à la fois la paroi du manchon 21 et la bande d'arrachage 22. La figure 4 illustre plusieurs types d'objets, à titre d'exemple, qui sont ici des récipients notés 10, tous revêtus d'une enveloppe de sécurité 20 qui est du type précédemment décrit. S 'agissant en espèce de récipients à dispositif de fermeture, le manchon thermorétractable 21 entoure une partie de chaque récipient dans la zone dudit dispositif de fermeture, afin d'en assurer l'inviolabilité. En a) , on a illustré un récipient 10 dont le corps 11 est surmonté d'un capuchon éventuellement vissé 12, alors qu'en b) le récipient 10 se présente sous la forme d'une bouteille dont le corps 11 est surmonté d'une capsule de bouchage 12, et qu'en c) le récipient 10 est un flacon dont le corps est surmonté d'un bouchon vissé ou clipsé 12. Dans tous les cas, le récipient 10 est équipé d'une enveloppe de sécurité 20 thermorétractée sur sa paroi en entourant étroitement la partie du récipient correspondant à la zone du dispositif de fermeture. Pour les récipients illustrés en b) et c) , on a représenté une enveloppe dont le bord supérieur recouvre par une couronne notée 29 la face supérieure de la capsule ou bouchon 12. Il va de soi que les exemples donnés à la figure 4 sont purement illustratifs, et que l'invention n'est aucunement limitée à un type particulier d'objet ni, lorsqu'il s'agit de récipients, à un type particulier de dispositif de fermeture . Dans tous les cas, le manchon thermorétractableThe two lines of micro-perforations 27 shown in FIGS. 1 and 2, but not in FIG. 3, could alternatively be provided to pass through the tear strip 22 itself. In this case, the microperforations pass through both the wall of the sleeve 21 and the tear strip 22. FIG. 4 illustrates several types of objects, by way of example, which are here containers denoted 10, all coated with a security envelope 20 which is of the type previously described. Acting in this case of containers with a closure device, the heat-shrinkable sleeve 21 surrounds a part of each container in the region of said container. closing device, to ensure inviolability. In a), a container 10 is illustrated, the body 11 of which is surmounted by a possibly screwed cap 12, while in b) the container 10 is in the form of a bottle, the body 11 of which is surmounted by a closure cap 12, and that in c) the container 10 is a bottle whose body is surmounted by a screwed or clipped stopper 12. In all cases, the container 10 is equipped with a heat-shrunk safety envelope 20 on its wall by closely surrounding the part of the container corresponding to the area of the closure device. For the containers illustrated in b) and c), an envelope is shown, the upper edge of which covers with a crown marked 29 the upper face of the capsule or cap 12. It goes without saying that the examples given in FIG. 4 are purely illustrative, and that the invention is in no way limited to a particular type of object or, in the case of containers, to a particular type of closure device. In all cases, the heat-shrinkable sleeve
21 est équipé, sur sa face interne, d'une bande d'arrachage21 is equipped, on its internal face, with a tear strip
22 prenant en sandwich une bande métallisée 23 non-adhésive. La coupe à plus grande échelle de la figure 5 permet de bien distinguer l'agencement multicouche au niveau de la bande d'arrachage 22 et de la bande métallisée d'identification 23. On a en outre représenté sur cette figure 5 la possibilité d'intégrer une antenne de détection ou une puce, entre la bande métallisée et la bande d'arrachage : on distingue ici un fil métallique d'antenne 50 pris en sandwich entre la bande métallisée 23 et la face adhésive 22.2 de la bande d'arrachage 22. L'impression 25 précitée sur au moins une face de la bande d'arrachage 22 procure dans ce cas un avantage supplémentaire en cachant 1 ' antenne ou la puce ainsi intégrée dans le manchon. Pour les exemples précédents, la bande d'arra- chage 22 et la bande métallisée 23 s'étendaient selon une génératrice du manchon 21, sur toute la hauteur de celui- ci. Il est toutefois possible de prévoir, en variante, que la bande d'arrachage 22 et la bande métallisée 23 s ' éten- dent circonferentiellement, sur toute la périphérie interne du manchon 21.22 sandwiching a non-adhesive metallic strip 23. The section on a larger scale in FIG. 5 makes it possible to clearly distinguish the multilayer arrangement at the level of the tear strip 22 and the metallized identification strip 23. In this FIG. 5, the possibility of integrate a detection antenna or a chip, between the metallized strip and the tear-off strip: a metallic wire of antenna 50 is sandwiched here between the metallized strip 23 and the adhesive face 22.2 of the tear-off strip 22 The aforementioned impression 25 on at least one face of the tear strip 22 gives in this case an additional advantage by hiding the antenna or the chip thus integrated in the sleeve. For the previous examples, the rear strip chage 22 and the metallized strip 23 extended along a generatrix of the sleeve 21, over the entire height of the latter. It is however possible, as a variant, to provide that the tear strip 22 and the metallized strip 23 extend circumferentially, over the entire internal periphery of the sleeve 21.
Une telle variante d'exécution est illustrée sur la figure 6, où l'on reconnaît, avec les mêmes références que précédemment, la bande d'arrachage 22 prenant en sandwich, de part et d'autre de ses bords, la bande métallisée d'identification 23. Cette bande 23 est représentée en grisé, étant entendu qu'elle est vue par transparence à travers la paroi du manchon 21. On a également illustré la présence de deux lignes de micro-perforations 27, de part et d'autre de la bande d'arrachage 22. Il convient en outre de noter qu'en l'espèce la languette de préhension 24 n'est pas un prolongement de la bande d'arrachage 22, mais est obtenue par une découpe, ici sensiblement en arc de cercle, notée 31, pratiquée dans la paroi du manchon 21.Such an alternative embodiment is illustrated in Figure 6, where we recognize, with the same references as above, the tear strip 22 sandwiched on either side of its edges, the metallized strip d 'identification 23. This strip 23 is shown in gray, it being understood that it is seen by transparency through the wall of the sleeve 21. It has also been illustrated the presence of two lines of micro-perforations 27, on either side of the tear strip 22. It should also be noted that in this case the gripping tab 24 is not an extension of the tear strip 22, but is obtained by cutting, here substantially in arc of circle, denoted 31, practiced in the wall of the sleeve 21.
Les figures 7 et 8 illustrent deux objets 10 revêtus d'une enveloppe de sécurité thermorétractée sur ceux-ci, dont la structure correspond à celle précédemment décrite en référence à la figure 6. La figure 7 illustre ainsi une enveloppe d'emballage 20, enveloppant un objet 10 qui est un diffuseur de parfum, dont on distingue le corps 11 surmonté d'un capuchon formant poussoir 13 équipé d'une buse de vaporisation 14, la zone de raccordement circulaire correspondant à une variation importante de section entre le corps 11 et le capuchon 13.FIGS. 7 and 8 illustrate two objects 10 coated with a heat-shrunk safety envelope thereon, the structure of which corresponds to that previously described with reference to FIG. 6. FIG. 7 thus illustrates a packaging envelope 20, enveloping an object 10 which is a fragrance diffuser, the body 11 of which is distinguished by a cap forming a pusher 13 equipped with a spray nozzle 14, the circular connection zone corresponding to a significant variation in cross section between the body 11 and the cap 13.
La bande d'arrachage 22 et la bande métallisée 23 s'étendent ainsi circonferentiellement, sur toute la périphérie interne du manchon 21, ici au niveau de la forte variation de section entre le corps et le capuchon de l'objet. Il est alors intéressant de prévoir que la bande d'arrachage 22 soit réalisée en matière plastique thermorétractable, de façon à présenter le même retrait transversal que la paroi du manchon 21. On pourra d'ailleurs également prévoir que la bande métallisée 23 soit, elle aussi, réalisée à partir d'une bande de matière plastique ther o- rétracatable, de façon à présenter également le même retrait transversal que la paroi du manchon 21. Ceci permet alors de garder la configuration du sandwich constitué par la bande d'arrachage 22 enveloppant la bande métallisée 23 malgré un retrait transversal très important, notamment dépassant largement 40 % (pour certains objets, on peut même atteindre un retrait de 80 %) . Il devient alors possible de préserver le concept de la bande d'arrachage prenant en sandwich la bande métallisée d'identification avec un agencement circonférentiel tout en absorbant de grandes différences de section, comme cela est illustré avec le présent diffuseur de parfum.The tear strip 22 and the metallized strip 23 thus extend circumferentially, over the entire internal periphery of the sleeve 21, here at the level of the large variation in section between the body and the cap. the object. It is then advantageous to provide that the tear strip 22 is made of heat-shrinkable plastic, so as to have the same transverse shrinkage as the wall of the sleeve 21. It may also be provided that the metallized strip 23 is, it also, produced from a strip of ther o-retractable plastic material, so as also to have the same transverse shrinkage as the wall of the sleeve 21. This then makes it possible to keep the configuration of the sandwich formed by the tear strip 22 enveloping the metallized strip 23 despite a very large transverse shrinkage, in particular largely exceeding 40% (for certain objects, it is even possible to reach a shrinkage of 80%). It then becomes possible to preserve the concept of the tear strip sandwiching the metallized identification strip with a circumferential arrangement while absorbing large differences in section, as illustrated with the present perfume diffuser.
La figure 8 illustre un autre objet 10 tel qu'un flacon pour lequel le manchon thermoretracte 21 assure simultanément une fonction d'étiquetage et une fonction d'inviolabilité. On notera les importantes variations de section depuis le corps principal du flacon jusqu'au bouchon de celui-ci. La bande d'arrachage thermorétractable 22, prenant en sandwich la bande métallisée 23, peut justement être prévue au niveau du bord inférieur du bouchon qui est par exemple vissé sur le corps du flacon, en permettant une ouverture nette et homogène sur 360°. La fonction d'étiquetage est alors préservée en permanence par la portion inférieure 21.10 du manchon thermoretracte qui reste sur le corps principal du flacon, après détachement de la bande d'arrachage 22. La portion supérieure du manchon 21, concernant la zone du bouchon du flacon, est notée 21.20. On a également prévu une languette de préhen- sion 24 se raccordant à deux lignes de micro-perforations 27, de part et d'autre des zones d'adhésion de la bande d'arrachage 22 débordant de chacun des bords parallèles de la bande métallisée non-adhésive 23.FIG. 8 illustrates another object 10 such as a bottle for which the heat-shrink sleeve 21 simultaneously performs a labeling function and a tamper-evident function. We note the significant variations in section from the main body of the bottle to the cap thereof. The heat-shrinkable tear strip 22, sandwiching the metallized strip 23, can precisely be provided at the lower edge of the stopper which is for example screwed onto the body of the bottle, allowing a clean and homogeneous opening over 360 °. The labeling function is then permanently preserved by the lower portion 21.10 of the heat-shrink sleeve which remains on the main body of the bottle, after detachment of the tear strip 22. The upper portion of the sleeve 21, concerning the area of the stopper of the bottle, is noted 21.20. A gripping tab 24 is also provided, connecting to two lines of micro-perforations. 27, on either side of the adhesion zones of the tear strip 22 projecting from each of the parallel edges of the non-adhesive metallized strip 23.
On est ainsi parvenu à réaliser une enveloppe de sécurité combinant les fonctions de certification d'origine et d'indication d'effraction, tout en conférant une valeur optique parfaite pour la lisibilité de la partie métallisée, notamment holographique, de la bande prise en sandwich contre la paroi interne du manchon. Cette structure, économique à réaliser, permet d'utiliser tout type de bande holographique existant avec un motif complexe quelconque, notamment bi ou tridimensionnel, et sans dépendre de la largeur de la bande .We have thus achieved a security envelope combining the functions of origin certification and tamper indication, while giving a perfect optical value for the legibility of the metallized part, in particular holographic, of the sandwiched strip. against the inner wall of the sleeve. This structure, economical to produce, makes it possible to use any type of existing holographic strip with any complex pattern, in particular two or three-dimensional, and without depending on the width of the strip.
L'invention n'est pas limitée aux modes de réalisation qui viennent d'être décrits, mais englobe au contraire toute variante reprenant, avec des moyens équivalents, les caractéristiques essentielles énoncées plus haut . The invention is not limited to the embodiments which have just been described, but on the contrary encompasses any variant incorporating, with equivalent means, the essential characteristics set out above.

Claims

REVENDICATIONS
1. Enveloppe de sécurité (20) pour objets (10), notamment pour des récipients à dispositif de fermeture, du type constitué par un manchon (21) en matière plastique thermorétractable apte à entourer étroitement une partie de l'objet, ledit manchon étant en outre équipé, sur sa face interne (21.1), d'une bande d'arrachage (22) et d'une bande métallisée d'identification (23) qui s'étend parallèlement à ladite bande d'arrachage, caractérisée en ce que la bande métallisée (23) est non-adhésive, et elle est prise en sandwich entre la face interne (21.1) du manchon (21) et une face adhésive (22.2) de la bande d'arrachage (22), la bande d'arrachage (22) débordant des deux côtés de la bande métallisée (23) de façon à adhérer à la face interne du manchon (21) par des zones (30) situées de part et d'autre de ladite bande métallisée.1. Security envelope (20) for objects (10), in particular for containers with closure device, of the type constituted by a sleeve (21) made of heat-shrinkable plastic capable of closely surrounding a part of the object, said sleeve being further equipped, on its internal face (21.1), with a tear strip (22) and with a metallized identification strip (23) which extends parallel to said tear strip, characterized in that the metallized strip (23) is non-adhesive, and it is sandwiched between the internal face (21.1) of the sleeve (21) and an adhesive face (22.2) of the tear strip (22), the strip of stripping (22) projecting from both sides of the metallized strip (23) so as to adhere to the internal face of the sleeve (21) by zones (30) located on either side of said metallized strip.
2. Enveloppe de sécurité (20) selon la revendication 1, caractérisée en ce que la bande métallisée (23) présente sa face métallisée (23.1) tournée vers la face adhésive (22.2) de la bande d'arrachage (22).2. Safety envelope (20) according to claim 1, characterized in that the metallized strip (23) has its metallized face (23.1) facing the adhesive face (22.2) of the tear strip (22).
3. Enveloppe de sécurité (20) selon la revendication 1 ou la revendication 2, caractérisée en ce que la bande métallisée (23) est une bande holographique.3. Security envelope (20) according to claim 1 or claim 2, characterized in that the metallized strip (23) is a holographic strip.
4. Enveloppe de sécurité (20) selon l'une des revendications 1 à 3, caractérisée en ce qu'au moins une ligne de mirco-perforations (27) est prévue dans la paroi du manchon (21) au voisinage de, ou également dans , la bande d'arrachage (22), parallèlement à cette dernière.4. Security envelope (20) according to one of claims 1 to 3, characterized in that at least one line of micro-perforations (27) is provided in the wall of the sleeve (21) in the vicinity of, or also in, the tear strip (22), parallel to the latter.
5. Enveloppe de sécurité (20) selon l'une des revendications 1 à 4, caractérisée en ce que l'une au moins des deux faces de la bande d'arrachage (22) est imprimée (25) .5. Security envelope (20) according to one of claims 1 to 4, characterized in that at least one of the two faces of the tear strip (22) is printed (25).
6. Enveloppe de sécurité (20) selon l'une des revendications 1 à 5, caractérisée en ce que la bande d'arrachage (22) et la bande métallisée (23) s'étendent selon une génératrice du manchon (21) , sur toute la hauteur de celui-ci.6. Security envelope (20) according to one of claims 1 to 5, characterized in that the tear strip (22) and the metallized strip (23) extend along a generator of the sleeve (21), over the entire height of the latter.
7. Enveloppe de sécurité (20) selon l'une des revendications 1 à 5, caractérisée en ce que la bande d'arrachage (22) et la bande métallisée (23) s'étendent circonferentiellement, sur toute la périphérie interne du manchon (21) .7. Security envelope (20) according to one of claims 1 to 5, characterized in that the tear strip (22) and the metallized strip (23) extend circumferentially, over the entire internal periphery of the sleeve ( 21).
8. Enveloppe de sécurité (20) selon la revendication 7, caractérisée en ce que la bande d'arrachage (22) est réalisée en matière plastique thermorétractable, de façon à présenter le même retrait transversal que la paroi du manchon (21) .8. A security envelope (20) according to claim 7, characterized in that the tear strip (22) is made of heat-shrinkable plastic, so as to have the same transverse shrinkage as the wall of the sleeve (21).
9. Enveloppe de sécurité (20) selon la revendication 8, caractérisée en ce que la bande métallisée (23) est également réalisée à partir d'une bande de matière plastique thermorétractable, de façon à présenter aussi le même retrait transversal que la paroi du manchon (21) .9. A security envelope (20) according to claim 8, characterized in that the metallized strip (23) is also produced from a strip of heat-shrinkable plastic, so as to also have the same transverse shrinkage as the wall of the sleeve (21).
10. Enveloppe de sécurité (20) selon l'une des revendications 1 à 9, caractérisée en ce qu'une antenne de détection ou une puce (50) est prise en sandwich entre la bande métallisée (23) et la face adhésive (22.2) de la bande d'arrachage (22). 10. Security envelope (20) according to one of claims 1 to 9, characterized in that a detection antenna or a chip (50) is sandwiched between the metallized strip (23) and the adhesive face (22.2 ) of the tear strip (22).
EP99918057A 1998-05-20 1999-05-12 Safety envelope formed by a sleeve made in heat shrinkable material equipped with an identifying metal-coated strip Expired - Lifetime EP1082256B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9806398 1998-05-20
FR9806398A FR2778892B1 (en) 1998-05-20 1998-05-20 SECURITY ENCLOSURE FOR OBJECTS, OF THE TYPE CONSISTING OF A SLEEVE OF HEAT-SHRINKABLE PLASTIC MATERIAL PROVIDED WITH A METALLIC IDENTIFICATION STRIP
PCT/FR1999/001136 WO1999059888A1 (en) 1998-05-20 1999-05-12 Safety envelope formed by a sleeve made in heat shrinkable material equipped with an identifying metal-coated strip

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Publication Number Publication Date
EP1082256A1 true EP1082256A1 (en) 2001-03-14
EP1082256B1 EP1082256B1 (en) 2004-12-08

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AT (1) ATE284357T1 (en)
AU (1) AU3611499A (en)
BR (1) BR9910592A (en)
DE (1) DE69922503T2 (en)
ES (1) ES2233039T3 (en)
FR (1) FR2778892B1 (en)
WO (1) WO1999059888A1 (en)

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JPS62109774A (en) 1985-11-06 1987-05-20 イ−・アイ・デユポン・デ・ニモアス・アンド・カンパニ− Opening device for shrink film package
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GB2298391B (en) 1995-03-02 1998-03-11 De La Rue Holographics Ltd Heat shrink packaging material
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2998881A1 (en) * 2012-12-04 2014-06-06 Arjowiggins Security OVERLAYING DEVICE AND METHOD FOR IMPLEMENTING THE SAME.
WO2014087302A1 (en) 2012-12-04 2014-06-12 Arjowiggins Security Capping device and implementation method

Also Published As

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EP1082256B1 (en) 2004-12-08
DE69922503D1 (en) 2005-01-13
AU3611499A (en) 1999-12-06
ATE284357T1 (en) 2004-12-15
WO1999059888A1 (en) 1999-11-25
DE69922503T2 (en) 2005-12-15
ES2233039T3 (en) 2005-06-01
FR2778892A1 (en) 1999-11-26
FR2778892B1 (en) 2000-07-07
BR9910592A (en) 2001-01-16

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