EP1403190B1 - Sceau de garantie - Google Patents

Sceau de garantie Download PDF

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Publication number
EP1403190B1
EP1403190B1 EP20030019739 EP03019739A EP1403190B1 EP 1403190 B1 EP1403190 B1 EP 1403190B1 EP 20030019739 EP20030019739 EP 20030019739 EP 03019739 A EP03019739 A EP 03019739A EP 1403190 B1 EP1403190 B1 EP 1403190B1
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EP
European Patent Office
Prior art keywords
layer
adhesive
release layer
film
release
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP20030019739
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German (de)
English (en)
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EP1403190A2 (fr
EP1403190A3 (fr
Inventor
Volker Hahn
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Tesa SE
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Tesa SE
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Publication date
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Publication of EP1403190A3 publication Critical patent/EP1403190A3/fr
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/03—Forms or constructions of security seals
    • G09F3/0305—Forms or constructions of security seals characterised by the type of seal used
    • G09F3/0341—Forms or constructions of security seals characterised by the type of seal used having label sealing means
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
    • G09F3/0292—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time tamper indicating labels

Definitions

  • the invention relates to the use of a tamper evident seal in the form of a portion of a single-sided adhesive tape which is passed around the article to be sealed and adhered to itself.
  • Rooms, packaging and goods should often be at least temporarily protected from unauthorized opening. This can be achieved, for example, by providing the door of the space to be protected or the opening of the package with a seal consisting of a section of adhesive tape at least partially encased on one side, passed around the article to be sealed and on top of it itself is glued. Such a seal can not be opened without the seal being destroyed irreversibly. A destroyed seal is a clear indication that someone has been working unauthorized on the door or packaging.
  • Security systems for detecting unauthorized opening are known and described in a variety of prior art.
  • Security labels are particularly important here.
  • US 4,184,701 A Safety labels described which are composed of several color or generally layers and thus have a low adhesion of the product layers with each other.
  • such layers separate irreversibly from each other, indicating the opening of the package.
  • DE 34 31 239 A1 describes the use of security labels, consisting of a carrier material with low tear propagation resistance.
  • the security label In combination with a strongly adhering adhesive, the security label is destroyed irreversibly during removal and thus the opening attempt is displayed.
  • the security label has a lower, to be detached from a carrier and applied to the packaging first adhesive layer on the underside of a first label material, on the upper side via a second adhesive layer, a second label material is applied.
  • the strength of the bond strength of the first adhesive layer between the package and the first label material is different than the strength of the bond strength of the second adhesive layer between the first label material and the second label material.
  • Security tapes are usually designed so that in the area of the lettering anchoring weakness is introduced below the colored structure of the tape. So will in US 5,633,058 A describes a weak on the support sheet anchoring transparent letter printing, which is covered with a full-surface colored, well anchored on the carrier film and the first print layer. The colored layer is covered with a self-adhesive. If such a security adhesive tape is peeled off a surface, the transparent letterpress together with the ink layer and the adhesive dissolves from the surface of the film and remains as writing on the surface.
  • EP 0 491 099 A1 describes a letterpress consisting of a silicone material, which is also covered with a colored well adhering to the film layer.
  • the colored layer is covered with a self-adhesive. If such a security adhesive tape is peeled off a surface, the ink layer and the adhesive dissolve away from the silicone surface and remain as writing on the surface.
  • the disadvantage of such a structure is the complex process technology to create the layers, since partial silicone surfaces greatly complicate a further coating due to the low surface tension.
  • EP 0 404 402 A2 is based on a transparent fissile layer, which becomes opaque at the forming interface and thus provides a previously unrecognizable lettering an optical contrast surface before the lettering is then readable.
  • a tamper-evident seal is disclosed in the form of a portion of a partially single-sided adhesive tape which is passed around the article to be sealed and adhered to itself, the adhesive tape having a splittable backing so as to break the tamper-evident seal by abutting the two Ends of the adhesive tape is pulled, the carrier splits irreversibly.
  • Object of the present invention is to provide a tamper-evident seal that is irreversibly destroyed in the unauthorized opening attempt.
  • the invention relates to the use of a tamper-evident seal in the form of a portion of a adhesive tape provided on one side, which is guided around the object to be sealed and which is glued to itself with the adhesive present, wherein the adhesive tape has a splittable carrier, so that when Breaking the tamper-evident seal by pulling on the two ends of the section that irreversibly splits the backing
  • the portion of the adhesive tape is fully coated with an adhesive, and the adhesive is inactivated (by printing and / or covering) except for a small area at one or both ends of the portion, leaving a comparatively small adhesive area on the portion ,
  • Such a tamper-evident label is excellent to handle due to the low adhesive surface. It can be guided around the object to be secured - for example the two pawls of a double-winged door.
  • the adhesive surface is glued to the tape itself, especially on the cover and / or printing. More preferably, however, the section can also be tack-free at both ends by deactivating both areas.
  • the production takes place in particular as a roll product by inserting said covering or printing during the cutting and winding process.
  • One variant is to later punch the sections like a label.
  • the administration in roll form as a roll in a dispenser or in a dispensing box, in particular with a knife for separation. It is particularly convenient to provide the tape with a transverse perforation to cut the section by hand.
  • sections can be offered in block form, as sheets on a release paper or loosely with an additional release paper cover in the adhesive area.
  • the carrier Upon opening the tamper-evident sealant formed from this tape, the carrier splits by separating the particular colored separating layer from the thermoplastic film, while areas which are well anchored on the carrier surface by means of primers are detached from the surface of the adhesive with the carrier.
  • the area of the separating layer which has been strongly anchored against the film surface with the primer layer, remains on the carrier surface and leaves an inverse lettering.
  • the message can not be seen before the tamper-evident seal is opened. After detachment, the message remains recognizable, even if the tape is again glued to each other exactly at the original bonding point, so that the proof of a manipulation of quantitative or qualitative nature on the packaged product remains recognizable.
  • an adhesive tape can be used, as in the US 5,633,058 A is disclosed.
  • the carrier consists of a carrier film, to which a weakly anchoring transparent letter printing is applied, which is covered with a full-surface colored, well anchored on the carrier film and the first print layer.
  • the colored layer is covered with a self-adhesive.
  • the thermoplastic film consists of stretched HDPE, PVC, PET, monoaxially stretched polypropylene, or biaxially oriented polypropylene, and is particularly transparent.
  • PET Polyethylene terephthalate
  • PVC polyvinyl chloride
  • films based on PET are characterized by a high elongation at break and heat resistance of 130 ° C to 175 ° C and resistance to dilute alkalis and acids.
  • films based on polyesters have a very high abrasion resistance and dielectric strength, but are less common in the field of packaging tapes due to the relatively high price compared to films based on polyolefins.
  • Films based on PVC are offered in combination with solvent-based adhesives based on natural rubber from various manufacturers as packaging adhesive tapes. In this case, due to the better heat resistance foils made of rigid PVC are used, which are up to max. 105 ° C have a good heat resistance.
  • the recovery of the PVC can be carried out by emulsion, suspension or bulk polymerization. Copolymers based on PVC / vinyl acetate are also known.
  • the films are based on hard PVC by average penetration and a partial resistance to gasoline, oil and alcohols.
  • the anchoring of primer on PVC films without corona treatment is better than with other thermoplastic films, such as films based on polyolefins. This is due to the high surface energy even without pretreatment [approx. 39 dyn / cm] and on the rough surface structure of PVC films.
  • a primer-coated PVC film is recommended.
  • Polyester-based films for example polyethylene terephthalate, may also be used to make the adhesive tapes.
  • the thicknesses of the films based on PET are between 20 and 100 ⁇ m, in particular between 30 and 50 ⁇ m.
  • Films based on stretched polyolefins are state of the art. Monoaxially and biaxially oriented films based on polyolefins are used in large quantities for packaging tapes, strapping tapes and other adhesive tapes. Also films based on stretched polyethylene or stretched copolymers containing ethylene and / or polypropylene units are known. All of these enumerated films can be used according to the invention as a carrier film.
  • Monoaxially stretched polypropylene is characterized by its very high tensile strength and low elongation in the longitudinal direction and is used for example for the production of strapping tapes.
  • Preferred for the production of the adhesive tapes are monoaxially stretched films based on polypropylene.
  • the thicknesses of the monoaxially oriented films based on polypropylene are preferably between 25 and 200 .mu.m, in particular between 40 and 130 .mu.m. Films of monoaxially stretched polypropylene are particularly suitable for the production of adhesive tapes.
  • Monoaxially oriented films are predominantly single-layered, but in principle it is also possible to produce multilayer monoaxially stretched films. Are known predominantly one, two and three-layer films, the number of layers can also be chosen larger.
  • Preferred for the production of the adhesive tapes are biaxially oriented films based on polypropylene with a stretching ratio in the longitudinal direction between 1: 4 and 1: 9, preferably between 1: 4.8 and 1: 6 and a cross-direction stretching ratio between 1: 4 and 1: 9, preferably between 1: 4.8 and 1: 8.5.
  • the longitudinal elasticity moduli measured at 10% elongation according to ASTM D882, are usually between 1000 and 4000 N / mm 2 , preferably between 1500 and 3000 N / mm 2 .
  • the thicknesses of the biaxially oriented polypropylene-based films are in particular between 15 and 100 ⁇ m, preferably between 20 and 50 ⁇ m.
  • Biaxially oriented films based on polypropylene can be produced by blown film extrusion or by means of conventional flat film systems. Biaxially stretched films are produced in one or more layers. Again, in the case of multilayer films, the thickness and composition of the various layers may be the same, but various thicknesses and compositions are also known.
  • the adhesive tapes are monolayer, biaxially or monoaxially stretched films and multilayer, biaxial or monoaxial polypropylene-based films which have a sufficiently strong bond between the layers, since delamination of the layers during use is disadvantageous.
  • Films based on rigid PVC are also known and are used by various adhesive tape manufacturers for the production of adhesive packaging tapes.
  • Soft PVC films are also suitable for the production of adhesive packaging tapes, the inadequate heat resistance of max. 60 ° C must be considered.
  • foils based on rigid PVC are preferably used.
  • the thicknesses of the films are preferably between 30 and 100 ⁇ m, in particular between 35 and 50 ⁇ m.
  • the adhesive tapes of the invention are used as packaging tapes for carton closure.
  • the adhesive tapes are designed so that an economical individual printing for minimal role is possible.
  • Release coatings as they are optionally coated on the upper, ie on the opposite surface of the adhesive film surface are widely used in the adhesive tape industry.
  • An overview of release coating systems based on silicone and their use in the area of pressure sensitive adhesives can be found in "Silicone Release Coating” ( D. Jones, YA Peters in Handbook of Pressure Sensitive Adhesive Technology, Third Edition, edited by Donatas Satas, Van Reinhold New York. Pp. 652-683 ).
  • release coatings of solvent-based carbamate systems and based on silicone-based systems.
  • Release coatings based on silicone systems are suitable as release coatings for adhesive tapes.
  • Preferred as a release coating are UV-curing silicone systems based on 100%, but also solvent-based silicone systems can be used as a release coating for the adhesive tapes of the invention.
  • the application rate of the release coating to the carrier material is preferably 0.1 to 3 g / qm. In a further particularly preferred embodiment, the layer application of the release coating is adjusted from 0.2 to 1.5 g / m 2.
  • a primer or primer is used as the first layer.
  • the film surface opposite the release coating is used.
  • Solvent-based and water-based adhesion promoters are used as adhesion promoters between film and adhesive or other layers for the production of adhesive tapes. Layers with high affinity for carriers or adhesion to carriers based on thermoplastic films are used for the production of adhesive tapes. The high affinity for surfaces of carriers based on thermoplastic films make the property of such components suitable for use as suitable adhesion promoters.
  • Various primer systems are known. For use as adhesion promoters for the release layer or optionally the first release layer of the adhesive tapes, aqueous adhesion promoters based on polyurethanes, low-chlorinated polypropylenes, styrene-butadiene copolymers and acrylates can be used, for example. Solvent-containing adhesion promoters are also suitable for anchoring subsequent layers in the adhesive tapes. These adhesion promoters are used in the adhesive tape industry as primers.
  • the application rate of the primer layer to the carrier material is preferably 0.5 to 12 g / qm.
  • the layer application of the first adhesion promoter layer is adjusted from 1.5 to 6 g / qm.
  • the adhesion of the primer layer to the thermoplastic film based on polyolefins is improved by corona treatment or especially by flame pretreatment, since the surfaces of the films based on oriented polyolefins can be prepared by these well-known methods, such as the corona or Flame treatment, to be treated. Preference is given to surface treatments by flame pretreatment.
  • An overview of the methods for surface treatment for example, the article "Surface pretreatment of plastics for adhesive bonding" ( A. Kruse; G. Kruger, A. Baalmann and OD Hennemann; J. Adhesion Sci. Technol., Vol 9, No 12, pp 1611-1621 (1995) ).
  • the primer layer is not applied to the entire surface of the release coating opposite surface of the support based on thermoplastic films.
  • the primer layer is applied to the film surface in a specific non-full-surface manner.
  • the application of the primer layer is designed such that only specific areas of the film surface are coated, which form, for example, the words "OPENED" or "VOID". This type of application of the primer layer is made possible by suitable printing processes.
  • the regions on the film surface which are left free from the primer layer which has not been applied over the full surface area preferably represent characteristic symbols or symbols.
  • the release layer is applied over the entire surface to the primer layer or to the free surface regions of the film used for producing the adhesive tapes.
  • Suitable separating layers for the adhesive tapes are, for example, resin dispersions, acrylate dispersions or, in general, polymer dispersions or solvent-containing polymer solutions which have sufficiently low adhesion to the support and brittleness after drying.
  • a layer for the adhesive tapes are suitable printing inks for carriers based on thermoplastic films.
  • suitable printing inks for carriers based on thermoplastic films for example, water-based, solvent-based or UV-curing flexographic inks used as a layer.
  • Such color layers are strong in color and suitable to be applied by means of various technology to the first layer or the film.
  • the layer system of adhesive tapes can be adjusted so that the layer anchors very well on the primer layer, on the other hand, with which not coated with the primer layer areas of the film, a poor adhesion or a poor composite.
  • the application rate of the separating layer to the carrier material or the primer layer is preferably 2 to 18 g / qm.
  • the layer application of the first layer is set from 5 to 11 g / qm.
  • the first release layer is applied over the entire surface to the primer layer or to the free surface regions of the film used to produce the adhesive tapes of the invention.
  • a layer for the adhesive tapes are in turn suitable printing inks for carriers based on thermoplastic films.
  • printing inks for carriers based on thermoplastic films.
  • water-based, solvent-based or UV-curing flexographic inks are used as a layer.
  • Such color layers are strong in color and suitable to be applied by means of various technology to the first layer or the film.
  • the layer system of the adhesive tapes according to the invention can be adjusted so that the layer anchors very well on the primer layer, on the other hand, with which not coated with the primer layer areas of the film, a poor adhesion or a poor composite.
  • the application rate of the first release layer to the carrier material or the primer layer is preferably 2 to 18 g / qm. In a further preferred embodiment, the layer application of the first layer is set from 5 to 11 g / qm.
  • the second release or in particular color layer is applied over the whole area in the production of the adhesive tapes according to the invention onto the first release layer.
  • the first and second release or ink layer are preferably different colors. Contrast colors increase the safety effect regarding the unnoticed opening of the packaging.
  • Suitable second release layers for the adhesive tape are aqueous or solvent-based inks which have sufficiently low adhesion to the first release layer after drying and sufficient brittleness.
  • brittleness and compositions of the first and second separation layer requires the property profile described.
  • Preferred in the production of the adhesive tapes are, for example, water-based, solvent-based or UV-curing flexographic inks for use as a second release layer.
  • Such color layers are strong in color and suitable to be applied to the first release layer by a variety of technology.
  • the application rate of the second release layer or ink layer to the first release layer is preferably 8 to 50 g / qm.
  • the layer application of the third layer or color layer of 15 to 30 g / qm is set.
  • adhesives essentially all known adhesives can be used with high bond strength on the primer to be packaged.
  • the adhesive of the adhesive tapes may consist of an adhesive based on solvent-containing natural rubber and acrylate adhesives. Preference is given to adhesives based on acrylate dispersions. These adhesive technologies are used in the adhesive tape industry.
  • the application rate of the adhesive to the carrier material is preferably 15 to 60 g / qm. In a further preferred embodiment, the layer application of 20 to 30 g / qm is set.
  • the adhesive tapes are produced in a multi-stage process.
  • the coating of one of the surfaces of the carrier is based on a thermoplastic film with the silicone-based release coating.
  • This one-sided equipment of the carrier is realized with appropriate coating equipment.
  • the film surface opposite the release coating is optionally corona or flame pretreated.
  • the primer layer with a high affinity for the surface of the thermoplastic film used is applied to the surface of the film opposite the release coating by means of flexographic printing.
  • Printing by means of flexographic printing is used, inter alia, in the adhesive tape industry for the customization of adhesive tapes.
  • printing forms are used whose raised parts transfer the first layer.
  • the printing forms are flexible sheets of rubber or photopolymers.
  • Flexographic printing components are low-viscosity, both solvent-based and water-based. They are fast drying, especially in the field of radiation-curing systems.
  • aqueous flexographic printing components are preferably used. The selection of the anilox roller depends on the substrate used, the associated flexographic printing component.
  • the application of the separating layer or of the separating layers to the primer layer or to the open areas on the film surface is achieved in the production of the adhesive tapes by using conventional methods.
  • the coating of aqueous systems by means of doctor blades or solvent-containing systems by means of brushes anilox rollers or printing process is to be mentioned in this context.
  • both the coating bar and the doctor blade technology are suitable. Furthermore, the application of adhesive based on styrene-isoprene-styrene as hot melt pressure sensitive adhesive to the release layer by means of known technology in the production of adhesive tapes is possible.
  • the tamper-evident seal according to the invention can in particular be used in two ways.
  • the objects to be sealed can be enclosed in such a way that the two ends of the tamper-evident seal are pressed against one another with the undersides, that is to say with the adhesive side, so that the shape of an eyelet results.
  • the end can be glued to the open adhesive on the top of the section, so that the shape of a ring results, within which lies the object to be sealed.
  • the tamper-evident seal indicates unauthorized opening by releasing portions of the adhesive tape from the adhesive tape as they peel off the adhered surface and remain as a message on the surface, the message being undetectable from the surface before peeling off. The message remains recognizable, even if the adhesive tape is put back exactly at the original bonding site after detachment.
  • FIG. 1 shows an embodiment of an adhesive tape which can be used to produce a tamper-evident seal, specifically in the lateral section.
  • the adhesive tape 1 consists of a preferably transparent thermoplastic film 10 having a sufficient internal strength.
  • a non-solid transparent primer layer 14 is applied in a first operation.
  • the layer 14 is arranged on the film surface 12 so that it gives a signature that is recognizable in the event of breaking the tamper-evident label.
  • a release layer 15 is applied to the primer layer 14 and the remaining film surface 12.
  • the release layer 15 is made of a colored material.
  • the color and the color density are selected so that on the one hand provide a sufficient contrast in color, so that the formed lettering is readable, but they can also show a well-recognizable on the adhesive layer 16 printing a company logo or brand license plate.
  • the adhesive layer 16 which ensures sufficient adhesion security, is applied to the release layer 15.
  • the primer layer 14 adheres relatively strongly to the film surface 12.
  • the release layer 15 adheres only relatively weakly to the film surface 12, but relatively strongly on the primer layer 14.
  • the adhesion of the release layer 15 to the film surface 12 is less than the adhesion of the release layer 15 to the adhesive layer 16.
  • a preferably transparent separating layer 13 is applied, which adheres relatively strongly to the surface 11.
  • the adhesion of the release layer 13 to the adhesive layer 16 is small, so that the wound to the roll of adhesive tape 1 can be unwound without a separation of the release layer 15 from the film surface 12 occurs.
  • a colored print 17 of a company logo or trademark can be applied to the outer surface of the adhesive 16.
  • the uniform color of the ink layer 15 is visible and optionally through the preferred transparency of the release layer 13 and the film support 10 and the primer layer 14 the translucent through the adhesive layer 16 color layer 17th
  • the adhesive tape 1 separates according to FIG. In the process, the separating layer 15 separates from the film 10 in the region in which it is in direct contact with the film surface 12. In the region in which the primer layer 14 is located, the adhesive layer 16 remains on the carrier film 10.
  • the word "OPENED" is visible as a lettering and as a direct color lettering on the carrier 10th
  • the lettering on the carrier film 10 can no longer be congruently inserted into the free lettering by the carrier 10 which is deformed during application and detachment.
  • FIG. 3 shows a further embodiment for an adhesive tape which can be used to produce a tamper-evident seal, namely in a lateral section.
  • the adhesive tape 1 consists of a preferably transparent thermoplastic film 10 with a sufficient internal strength which ensures the described use.
  • a non-solid transparent primer layer 14 is applied in a first operation.
  • the layer 14 is arranged on the film surface 12 so that it gives a signature that is recognizable in the case of breaking the tamper-evident label.
  • a first release layer 15 is applied to the primer layer 14 and the remaining film surface 12.
  • the release layer 15 is made of a colored material.
  • the colored separating layer 15 is on both the film surface 12 between the region of the primer layer 14 as well as just applied to the primer layer 14 itself.
  • a second separating layer 17 is applied to the separating layer 15.
  • the separating layer 17 preferably has a different color than the separating layer 15.
  • the adhesive layer 16 which ensures sufficient adhesion security, applied to the release layer 17.
  • the primer layer 14 adheres relatively strongly to the film surface 12.
  • the release layer 15 adheres only relatively weakly to the film surface 12, but relatively strongly on the primer layer 14.
  • the release layer 17 only weakly adheres to the release layer 15.
  • release layer 15 to film surface 12 is less than the adhesion of release layer 17 to release layer 15.
  • Adhesive layer 16 adheres to release layer 17 more than release layer 15 on film surface 12.
  • Adhesive layer 16 preferably adheres more strongly to release layer 17 than on the release layer 15.
  • a preferably transparent separating layer 13 is applied, which adheres relatively strongly to the surface 11.
  • the adhesion of the release layer 13 to the adhesive layer 16 is small, so that the wound to the roll of adhesive tape 1 can be unwound without a separation of the release layer 15 from the film surface 12 occurs.
  • the adhesive tape 1 in the structure according to FIG. 1 is bonded to itself and thus the tamper-evident seal, the uniform color of the ink layer is visible through the preferred transparency of the release layer 13 and the film backing 10 and the primer layer 14.
  • the adhesive tape 1 separates according to FIG.
  • the separation layer 15 separates in the area in which they are in direct contact with the Film surface 12 is from the film 10 from.
  • the separating layer 15 separates from the separating layer 17 and remains on the film 10.
  • the entire surface of the adhesive 16 remains in association with the separating layer 17.
  • the region of the separating layer remains on the separating layer 17 15, which has separated from the film surface 12.
  • the word "OPENED" can be read as writing on the separating layer 17 and as inverse transparent lettering on the carrier 10.
  • the word "OPENED” remains visible because it forms an optical contrast through the air layer at the interface between release layer 15 and release layer 17 a modified refraction relative to the interface of the composite primer layer 14 with release layer 15 and film surface 12 ,
  • the lettering on the carrier film 10 can no longer be congruently inserted into the free lettering by the carrier 10 which is deformed during application and detachment.
  • Another indicator that the tamper-evident seal has been removed before is that the separation of the layers 15, 17 is irreversible and thus that the adhesion of the superimposed layers 15, 17 is not sufficient.
  • FIG. 5 shows a tamper-evident seal 10 in the form of a section of an adhesive tape 1 according to FIG. 1 or 3 provided with an adhesive 16 on one side, which is guided around the object to be sealed (not shown here) and which is glued to itself with the adhesive 16 present ,
  • the tamper-evident seal 10 forms an eye which comprises the object to be sealed.
  • the adhesive tape 1 is provided over its entire surface with an adhesive 16, which is largely covered with a release paper 2.
  • the section thus has only a small adhesive area 3, which is glued in the formation of the tamper-evident seal 10 on the release paper 2. If an attempt is made to break the tamper-evident seal 10 by pulling on the two ends 11, 12 of the section, the carrier of the adhesive tape 1 irreversibly splits, so that the word "OPEN" becomes visible.
  • a release varnish based on a standard 100% silicone system (UV-curing) is used to produce the adhesive tapes according to the invention.
  • a primer layer based on an aqueous polyurethane dispersion is used to produce the adhesive tapes according to the invention.
  • a separating layer based on a solvent-containing printing ink is used to produce the adhesive tape. Designation: 15VAA printing ink of the Michael Huber Kunststoff GmbH, Germany
  • An adhesive composition based on an aqueous acrylate dispersion is used for the production of the adhesive tape.
  • the coating of the film a with a standard silicone-based release coating is carried out by means of the usual standard technology
  • the coating of the film c1 with the primer layer takes place by means of the flexographic printing technique.
  • a flexographic cliché is used, whose sublime games depict the word "OPENED".
  • the laboratory flexographic printing plate and the web speed are adjusted so that, after drying, a coating of the primer layer of about 1 to 3 g / m 2 is measured.
  • the coating is carried out on a laboratory coater with a working width of 500 mm and a coating speed of 10 m / min.
  • Behind the coating station with wire-wound applicator is a drying channel, which is operated with hot air (about 100 ° C). The coated film was used immediately without storage time.
  • the coating of the film c2 with the separating layer takes place by means of a wire bar.
  • the wire bar and the coating speed are adjusted so that after drying the coated film, a coating of the separating layer of about 25 g / qm is measured.
  • the coating was carried out on a technical coating system with a working width of 500 mm and a coating speed of 10 m / min. Behind the coating station is a drying channel, which is operated with hot air (about 100 ° C). The coated film is used immediately without storage.
  • the coating of the film c3 with the adhesive takes place by means of a wire bar.
  • the wire bar and the coating speed are adjusted so that after the drying of the coated film, a mass application of about 25 g / sqm is measured.
  • the coating was carried out on a technical coating system with a working width of 500 mm and a coating speed of 10 m / min.
  • Behind the coating station with wire-wound applicator is a drying channel, which is operated with hot air (about 100 ° C).
  • the coated film was made up in a width of 19 mm. The determination of the safety effect took place after two days storage at 23 ° C.
  • the adhesive tape is covered with a paper cover such that only a narrow adhesive strip remains on one of the two edges. Subsequently, the tamper-evident seals are produced in the desired width by the adhesive tape is punched at a right angle to the direction in the desired width.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Adhesive Tapes (AREA)
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  • Packages (AREA)

Claims (6)

  1. Utilisation d'un sceau de garantie qui présente la forme d'un morceau de ruban adhésif dont une face est dotée d'une pâte adhésive, passé autour de l'objet à sceller et collé sur lui-même, le ruban adhésif présentant un support refendable de telle sorte que, lorsque le sceau de garantie est rompu en tirant sur les deux extrémités du ruban adhésif, le support se refend de façon irréversible,
    caractérisé en ce que
    toute la surface du morceau de ruban adhésif est dotée d'un adhésif et l'adhésif est inactivé sauf pour une petite zone située à l'une des deux extrémités ou aux deux extrémités du morceau, de telle sorte qu'une surface adhésive relativement petite reste sur le morceau.
  2. Utilisation d'un sceau de garantie selon la revendication 1, caractérisée en ce que comme support refendable, on utilise un système refendable qui est basé sur un papier encollé et fortement compacté, d'un composite de papier et d'un film ou d'un composite de deux films, le composite pouvant être constitué de papiers et/ou de films reliées de manière définie par points et/ou par lignes.
  3. Utilisation d'un sceau de garantie selon la revendication 1, caractérisée en ce que l'on utilise un ruban adhésif en plusieurs couches dont le support comprend une couche de support ainsi qu'une ou plusieurs couches supplémentaires qui peuvent être appliquées uniquement sur certaines parties.
  4. Utilisation d'un sceau de garantie selon la revendication 3, dans laquelle le sceau de garantie est constitué d'un ruban adhésif en plusieurs couches qui présentent un support doté d'une couche de support basée sur un film thermoplastique étiré et dont le côté supérieur est éventuellement revêtu par un vernis de séparation, sur le côté inférieur duquel les couches suivantes sont appliquées :
    - une couche de fond appliquée sur une partie de la surface, la couche de fond s'ancrant très bien sur le film thermoplastique,
    - une couche de séparation appliquée sur toute la surface de la couche de fond appliquée et sur la surface libre du film thermoplastique, la couche de séparation s'ancrant mieux sur la couche de fond que sur le film thermoplastique et
    - une pâte adhésive appliquée sur toute la surface de la couche de séparation et qui s'ancre mieux sur la couche de séparation que la couche de séparation sur le film thermoplastique.
  5. Utilisation d'un sceau de garantie selon la revendication 3, dans laquelle le sceau de garantie est constitué d'un ruban adhésif en plusieurs couches qui présente un support doté d'une couche de support basée sur un film thermoplastique étiré, dont le côté supérieur est éventuellement revêtu d'un vernis de séparation et sur le côté inférieur duquel les couches suivantes sont appliquées :
    - une couche de fond appliquée sur une partie de la surface, la couche de fond s'ancrant très bien sur le film thermoplastique,
    - une première couche de séparation appliquée sur toute la surface de la couche de fond et sur la surface libre du film thermoplastique, la première couche de séparation s'ancrant mieux sur la couche de fond que sur le film thermoplastique,
    - une deuxième couche de séparation appliquée sur toute la surface de la première couche de séparation, la deuxième couche de séparation adhérant mieux sur la première couche de séparation que la première couche de séparation sur la surface du film et la deuxième couche de séparation adhérant moins bien sur la première couche de séparation que la pâte adhésive sur la base d'adhérence et
    - une pâte adhésive appliquée sur toute la surface de la deuxième couche de séparation et qui s'ancre mieux sur la deuxième couche de séparation que la deuxième couche de séparation sur la première couche de séparation.
  6. Utilisation d'un sceau de garantie selon au moins l'une des revendications 1 à 3, dans laquelle le sceau de garantie est constitué d'un ruban adhésif en plusieurs couches qui présente un support constitué d'un film de support sur lequel on imprime des caractères transparents faiblement ancrés dont toute la surface est recouverte par une couche colorée qui s'ancre bien sur le film de support et sur la première impression, la couche colorée étant recouverte par une pâte autoadhésive.
EP20030019739 2002-09-27 2003-08-29 Sceau de garantie Expired - Fee Related EP1403190B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002145430 DE10245430A1 (de) 2002-09-27 2002-09-27 Originalitätssiegel
DE10245430 2002-09-27

Publications (3)

Publication Number Publication Date
EP1403190A2 EP1403190A2 (fr) 2004-03-31
EP1403190A3 EP1403190A3 (fr) 2004-07-07
EP1403190B1 true EP1403190B1 (fr) 2007-07-18

Family

ID=31969704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030019739 Expired - Fee Related EP1403190B1 (fr) 2002-09-27 2003-08-29 Sceau de garantie

Country Status (3)

Country Link
EP (1) EP1403190B1 (fr)
DE (2) DE10245430A1 (fr)
ES (1) ES2290391T3 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN1740254B (zh) * 2004-08-24 2010-09-08 德莎欧洲公司 用于形成接合的胶粘带

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DE102005043221A1 (de) * 2005-09-09 2007-03-15 Tesa Ag Selbstklebeband
DE102005057932A1 (de) * 2005-12-02 2007-06-06 Tesa Ag Rolle einer Etikettenbahn in Form einer archimedischen Spirale aus hintereinander angeordneten Etiketten
DE202006004459U1 (de) * 2006-03-11 2007-07-26 Herma Gmbh Etikettenanordnung
DE102010002481B4 (de) * 2009-06-25 2014-01-16 Tesa Se Originalitätssiegel
DE102009035931A1 (de) * 2009-08-04 2011-02-10 Tesa Se Mehrschichtiges Etikett
TWM389894U (en) * 2009-12-17 2010-10-01 Gs Tech Corp ID belt
EP2551024B1 (fr) 2011-07-29 2017-03-22 3M Innovative Properties Co. Film multicouche doté d'au moins une couche mince et procédé continu de formation d'un tel film
EP2735595A1 (fr) 2012-11-23 2014-05-28 3M Innovative Properties Company Film adhésif multicouche sensible à la pression
DE102012221796B3 (de) * 2012-11-28 2014-03-13 Tesa Se Transparente Sicherheitsfolie
WO2015048295A1 (fr) 2013-09-25 2015-04-02 Avery Dennison Corporation Étiquettes de sécurité inviolables
GB2599379A (en) * 2020-09-29 2022-04-06 We Seal Ltd Sealing tape
EP4202889A1 (fr) * 2021-12-23 2023-06-28 SCRIBOS GmbH Étiquette d'étanchéité, procédé de fabrication d'une étiquette d'étanchéité et utilisation

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GB8921108D0 (en) * 1989-09-18 1989-11-01 Interpoly Ltd Tamper indicating package
DE19738540C2 (de) * 1997-09-03 1999-07-08 Schreiner Etiketten Siegelband
US6033762A (en) * 1998-05-08 2000-03-07 Decker Tape Products, Co., Inc. Self-adhesive resealable tamper-evident tape
DE19963711A1 (de) * 1999-12-29 2001-07-05 Beiersdorf Ag Klebeband zum Nachweis des unbefugten Öffnens einer Verpackung
DE10030596A1 (de) * 2000-06-21 2003-01-23 Tesa Ag Sicherheitsklebeband zum Nachweis des unbefugten Öffnens einer Verpackung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1740254B (zh) * 2004-08-24 2010-09-08 德莎欧洲公司 用于形成接合的胶粘带

Also Published As

Publication number Publication date
DE10245430A1 (de) 2004-04-08
ES2290391T3 (es) 2008-02-16
EP1403190A2 (fr) 2004-03-31
DE50307687D1 (de) 2007-08-30
EP1403190A3 (fr) 2004-07-07

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