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EP1296306A2 - Utilisation d'une bande adhesive de securité pour révéler l'ouverture non-authorisée d'un emballage postal - Google Patents

Utilisation d'une bande adhesive de securité pour révéler l'ouverture non-authorisée d'un emballage postal Download PDF

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Publication number
EP1296306A2
EP1296306A2 EP02019332A EP02019332A EP1296306A2 EP 1296306 A2 EP1296306 A2 EP 1296306A2 EP 02019332 A EP02019332 A EP 02019332A EP 02019332 A EP02019332 A EP 02019332A EP 1296306 A2 EP1296306 A2 EP 1296306A2
Authority
EP
European Patent Office
Prior art keywords
adhesive
layer
thermoplastic film
adhesive tape
primer layer
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.)
Withdrawn
Application number
EP02019332A
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German (de)
English (en)
Other versions
EP1296306A3 (fr
Inventor
Ulrich Otten
Andreas Schröder
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.)
Tesa SE
Original Assignee
Tesa SE
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 Tesa SE filed Critical Tesa SE
Publication of EP1296306A2 publication Critical patent/EP1296306A2/fr
Publication of EP1296306A3 publication Critical patent/EP1296306A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • B65D27/00—Envelopes or like essentially-rectangular flexible containers for postal or other purposes having no structural provision for thickness of contents
    • B65D27/12—Closures
    • B65D27/30—Closures with special means for indicating unauthorised opening
    • 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 multi-layer adhesive tape Basis of a stretched thermoplastic film, which is coated on one side with adhesive, for Reseal the shipping packaging with the aim of being an unauthorized Display attempt to open.
  • Preferred shipping packaging is used in the use according to the invention of shipping bags, envelopes, envelopes, pouches and the like, hereinafter referred to only as examples of shipping envelopes, without wishing to restrict their use to them.
  • the adhesive tape By using the adhesive tape, the attempt to open the shipping envelope is indicated, in that areas of the adhesive tape remain on it as a message when the adhesive is peeled off, the message not being recognizable before being removed from the surface. The message remains recognizable, even if the adhesive tape is put back exactly on the original gluing point after being loosened.
  • a chain link is formed by transport companies or courier services that the Take over transport to the recipient.
  • Delivering shipments of goods high Tangible assets with small size or documents are usually made in shipping envelopes are often closed by normal adhesive systems in the opening area. This Adhesive systems can often be opened with simple tools such as knife blades without the attempted manipulation is obvious.
  • Security systems for detecting unauthorized opening are known and a large number are described in the prior art.
  • Security labels are particularly important here.
  • US Pat. No. 4,184,701 describes security labels which are made up of several layers of color or generally layers and therefore have little adhesion of the product layers to one another. In combination with a strongly adhesive adhesive, such layers separate irreversibly from each other, which indicates the opening of the packaging.
  • DE 34 31 239 A1 describes the use of security labels consisting of a carrier material with low tear resistance. In combination with a strong adhesive, the security label is irreversibly destroyed when removed and the attempt to open it is displayed.
  • the security label has a lower first adhesive layer to be removed from a carrier and applied to the packaging on the underside of a first label material, on the upper side of which a second label material is applied via a second adhesive layer.
  • the strength of the adhesive strength of the first adhesive layer between the packaging and the first label material is different from the strength of the adhesive force of the second adhesive layer between the first label material and the second label material.
  • Safety adhesive tapes are usually designed so that in the area of the lettering introduced an anchoring weakness below the colored structure of the adhesive tape becomes.
  • US Pat. No. 5,633,058 discloses a transparent material that is weakly anchored on the carrier film Letter print described, with a full-surface colored, well on the carrier film and the first pressure anchoring layer is covered. The colored layer is with one Self-adhesive covered. If such a security tape is used by one Peeled off the surface, the transparent letter print dissolves together with the Color layer and the adhesive from the film surface and remains as lettering back of the surface.
  • EP 0 491 099 A1 describes a letter print consisting of a silicone material which is also covered with a colored layer which adheres well to the film.
  • the colored layer is covered with a self-adhesive. If such a security adhesive tape is peeled off from a surface, the colored layer and the adhesive mass detach from the silicone surface and remain on the surface as lettering.
  • the disadvantage of such a construction is the complex process technology used to create the layers, since partial silicone surfaces make further coating very difficult due to the low surface tension.
  • EP 0 404 402 A2 is based on a transparent, cleavable layer that forms on the The interface becomes opaque and thus a previously unrecognizable lettering provides an optical contrast surface in front of which the lettering can then be read.
  • Tamper-proof sealing of shipping envelopes are essential for the application also known various problem solutions.
  • No. 4,838,708 proposes a security bag that is equipped with an adhesive system at its opening.
  • the adhesive system is designed in such a way that a lettering is created by two different connection strengths on the bag material of two adhesives.
  • versions on the same basis are also presented there, which also provide an adhesive strip for closing the bag.
  • a security system for bags which, among other things, produces a visual indication when the temperature falls below a certain level, is described in US Pat. No. 5,631,068.
  • the adhesive tape consists of a flexible film made of polyethylene coated with adhesive and a color layer in the form of a printed image.
  • a suitable combination of carrier and adhesive with regard to different coefficients of thermal expansion or shrinkage delaminates the color layer when it cools or heats above / below a certain temperature.
  • the closure flap of the mailing bag comes with a vaporized metal layer a few micrometers thick, with an adhesive coated and provided with a protective cover that can be removed before use. at an attempt to open the metal layer undergoes irreversible damage and shows thus the attempt at manipulation.
  • Another embodiment mentioned here is in same layer structure of metal layer and adhesive on a polyester film as Duct tape.
  • GB 2 138 396 specifies a solvent-resistant safety closure for bags.
  • the bag is closed by an adhesive strip, the adhesive of which in the case of Contact with a solvent undergoes a color change.
  • the Adhesive of the adhesive strip a dye formulation which is soluble in solvents, which attack the glue.
  • Thermoplastic films based on polyethylene terephthalate (PET) or polyvinyl chloride (PVC) are used for the production of adhesive tapes by various manufacturers. Films based on PET are characterized by their high elongation at break and heat resistance from 130 ° C to 175 ° C and resistance to dilute alkalis and acids. Furthermore, films based on polyesters have a very high abrasion resistance and dielectric strength, but are less widespread in the field of packaging adhesive tapes due to the relatively high price compared to films based on polyolefins.
  • Films based on PVC in combination with solvent-based adhesives based on natural rubber are offered by various manufacturers as packaging tapes. Due to the better heat resistance, films made of hard PVC are used, which are up to max. 105 ° C have good heat resistance.
  • the PVC can be obtained by emulsion, suspension or bulk polymerization. Copolymers based on PVC / vinyl acetate are also known.
  • the films based on hard PVC are characterized by medium penetration and partial resistance to gasoline, oil and alcohol.
  • the anchoring of primers on PVC films without corona treatment better than 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 foils.
  • Anchoring adhesives based on natural rubber is one with primer coated PVC film recommended.
  • adhesion promoters In the production of adhesive tapes with adhesive compositions based on natural rubber are both water-based and solvent-based primers as adhesion promoters inserted between adhesive and carrier film. These have used adhesion promoters partly an adhesive based on natural rubber applied to the solution cross-linking effect.
  • the object of the present invention is to use a security adhesive tape specify that when removing from the surface of a package, especially one Envelope or the like, leaves a layer of color in particular, within which there is an inverse lettering. At the same time is the identical lettering positively visible on the peeled backing.
  • a suitable gradation of the separating forces of the multilayer structure means that achieved safe separation within the adhesive tape and splitting the packaging surface especially for cardboard boxes, shipping envelopes Soda paper or paper envelopes avoided by the adhesive.
  • the lettering is especially for all commercially available paper qualities or materials for Shipping envelopes or the like, which are made of, for example, printed polyethylene can exist, securely transferable.
  • the message cannot be seen before the tape is removed from the surface. After peeling off, the message remains recognizable, even if the tape is exact again is placed at the original bond point, so that the proof of a Manipulations of a quantitative or qualitative nature on the packaged product remain recognizable.
  • inventive concept encompasses the use of security adhesive tapes, such as they are set out in the claims for which an economical individual printing for at least one role is possible.
  • thermoplastic film is stretched out Polyolefins or polyester and is particularly transparent.
  • thermoplastic film preferably consists of stretched HDPE, PVC, PET, monoaxial stretched polypropylene or biaxially stretched polypropylene.
  • Polyester-based films for example polyethylene terephthalate, can also be used to produce the adhesive tapes of the invention.
  • 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 belong to the prior art. Monoaxial and Biaxially stretched films based on polyolefins are used in large quantities for Packaging tapes, strapping tapes and other tapes are used. Even foils based on stretched polyethylene or stretched copolymers containing ethylene and / or polypropylene units are known. All these listed foils can be viewed as Use the carrier film according to the invention.
  • 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 used.
  • Preferred for the production of the adhesive tapes according to the invention for bundling and palletizing cardboard boxes and other goods are stretched monoaxially Films based on polypropylene.
  • the thicknesses of the monoaxially stretched films based on polypropylene are preferably between 25 and 200 ⁇ m, in particular between 40 and 130 ⁇ m. Films made of monoaxially stretched polypropylene are particularly suitable for producing the adhesive tapes according to the invention. Monoaxially stretched films are predominantly single-layered, but in principle multilayered monoaxially stretched films can also be produced. One-, two- and three-layer foils are predominantly known, and the number of layers can also be chosen to be larger.
  • Preferred in the use according to the invention for securely closing shipping envelopes and the like are adhesive tapes made of biaxially stretched films based on polypropylene with a stretch ratio in the longitudinal direction between 1: 4 and 1: 9, preferably between 1: 4.8 and 1: 6 and a stretch ratio in the transverse direction between 1: 4 and 1: 9, preferably between 1: 4.8 and 1: 8.5.
  • the elasticity modules achieved in the longitudinal direction, 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 stretched films based on polypropylene are in particular between 15 and 100 ⁇ m, preferably between 20 and 50 ⁇ m.
  • Biaxially stretched films based on polypropylene can be produced using blown film extrusion or using conventional flat film lines. Biaxially stretched films are produced in one or more layers. In the case of the multilayer films, the thickness and composition of the different layers can also be the same here, but different thicknesses and compositions are also known.
  • Adhesive tapes are particularly preferred for the use according to the invention single-layer, biaxially or monoaxially stretched films and multilayer, biaxial or monoaxial films based on polypropylene, which have a sufficiently strong bond between the layers, since delamination of the layers during the Application is disadvantageous.
  • Hard PVC-based films are also known and are used by various Adhesive tape manufacturers used for the production of packaging tapes.
  • Soft PVC films are also suitable for the production of packaging tapes, whereby their inadequate heat resistance of max. 60 ° C must be taken into account.
  • adhesive tapes according to the invention for a secure closure of a shipping envelope or the like are preferably adhesive tapes made of foils used on the basis of hard PVC.
  • the thicknesses of the foils are preferably between 30 and 100 ⁇ m, especially between 35 and 50 ⁇ m.
  • the use according to the invention provides the closure of shipping bags, bags, envelopes, envelopes or the like.
  • Adhesive tapes are advantageously used, in which the upper surface of the Thermoplastic film is coated with a release coating. Release coatings as they are on the upper, i.e. on the film surface opposite the adhesive optionally coated are widely used in the adhesive tape industry used.
  • 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, Y. A. Peters in Handbook of Pressure Sensitive Adhesive Technology, Third Edition, edited by Donatas Satas, Van Reinhold New York. Pp. 652-683).
  • release coatings based on solvent-based carbamate systems and based on silicone-based systems are primarily used. Release coatings based on silicone systems are suitable as release coatings for the adhesive tapes according to the invention. UV-curing silicone systems based on 100% are preferred as the release coating, but solvent-containing silicone systems can also be used as the release coating for the adhesive tapes according to the invention.
  • the application amount of the release coating on the carrier material is preferably 0.1 to 3 g / m2. In a further particularly preferred embodiment, the layer application of the release coating is adjusted from 0.2 to 1.5 g / m 2.
  • first layer an adhesion promoter or primer is used. This is that of the release coating opposite film surface (lower surface) used.
  • Adhesion promoters based on solvents and water are used as adhesion promoters between Film and adhesive or other layers used for the production of adhesive tapes. Layers with high affinity for supports or adhesion to supports Thermoplastic films are used to manufacture adhesive tapes. The height Affinity for the surfaces of substrates based on thermoplastic films cause the Properties of such components for use as suitable adhesion promoters.
  • Various primer systems are known. For use as an adhesion promoter for the first
  • the release layer of the adhesive tapes according to the invention are, for example, aqueous adhesion promoters based on polyurethanes, low chlorinated polypropylenes, styrene-butadiene copolymers and acrylates can be used. Solvent-based adhesion promoters are also used for anchoring subsequent layers in the adhesive tapes of the invention. This Adhesion promoters are used as primers in the adhesive tape industry.
  • the application amount of the primer layer on the carrier material is preferably 0.5 to 12 g / sqm.
  • the layer application is the first adhesion promoter Layer set from 1.5 to 6 g / sqm.
  • the adhesion of the primer layer to the thermoplastic film based on polyolefins Corona treatment or especially improved by flame pretreatment, because Especially the surfaces of the films based on stretched polyolefins can be removed by them generally known methods, such as corona or flame treatment, are treated become. Surface treatments by flame pretreatment are preferred.
  • a The article provides an overview of the surface treatment processes, for example "Surface pretreatment of plastics for adhesive bonding" (A. Kruse; G. Krüger, A. Baalmann and O. D. Hennemann; J. Adhesion Sci. Technol., Vol 9, No12, pp 1611-1621 (1995)).
  • the primer layer is not applied over the entire surface to that opposite the release coating Surface of the carrier applied on the basis of thermoplastic films.
  • the primer layer is applied to the film surface in a specific, non-full-surface manner applied.
  • the application of the primer layer is designed in such a way that only special ones Areas of the film surface are coated, for example the words Form "OPENED” or "VOID". This type of application of the primer layer is carried out by suitable printing processes.
  • the primer layer on the film surface that is not applied over the entire surface is preferred characteristic signs or symbols, in particular in the form of Letters or words.
  • a full surface area is used Separating layer on the primer layer or on the free surface areas of the applied film applied.
  • a separating layer for the adhesive tapes according to the invention are suitable, for example, resin dispersions, acrylate dispersions or in general Polymer dispersions or solvent-containing polymer solutions, one after the Drying has sufficient low adhesion to the carrier and is brittle.
  • a separating layer for the adhesive tapes used according to the invention are suitable printing inks for substrates based on thermoplastic films.
  • suitable printing inks for substrates based on thermoplastic films are the Example water-based, solvent-based or UV-curing Flexographic inks used as a layer.
  • Such layers of color are strong in color and suitable by means of different technologies on the first layer or the Foil to be applied.
  • this can be done Interface layer system of the adhesive tapes used according to the invention set in this way be that the separating layer is very well anchored on the primer layer, on the other hand, with the areas of the film not coated with the primer layer, poor adhesion or has a bad bond.
  • the application amount of the separating layer on the carrier material or 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 / m2.
  • the adhesive of the adhesive tape used according to the invention can consist of a Adhesive based on solvent-based natural rubber and acrylate adhesives consist. Adhesives based on acrylate dispersions are preferred, in particular of aqueous acrylic dispersions. These adhesive technologies are used in the Adhesive tape industry used.
  • the amount of adhesive applied to the backing material is preferably 15 to 60 g / sqm. In a further preferred embodiment, the layer application is from 20 to 30 g / m2 set.
  • the adhesive tapes used according to the invention are produced in one multi-stage process.
  • a first step one of the surfaces is coated of the carrier (upper surface) based on a thermoplastic film with that on silicone based release coating.
  • This one-sided equipment of the carrier is with corresponding coating systems realized.
  • the film surface opposite the release coating (lower surface) becomes optionally pretreated with corona or flame.
  • the primer layer with high affinity for the surface of the thermoplastic film used with the help of flexographic printing on the film surface opposite the release coating (lower surface) applied.
  • Printing using flexographic printing is used, among other things, in the adhesive tape industry for individualizing adhesive tapes.
  • Printing forms are used here, the raised portions of which transfer the first layer.
  • the printing forms are flexible plates made of rubber or photopolymers.
  • Flexographic printing components are thin, both solvent and water based. They dry quickly, especially in the area of radiation-curing systems.
  • Aqueous flexographic printing components are preferably used in the production of the adhesive tapes according to the invention. The selection of the anilox roller depends on the printing material used and the associated flexographic printing component.
  • the application of the separating layer to the primer layer or to the open one It is placed on the film surface in the production of the adhesive tapes according to the invention achieved by using common methods.
  • the coating more watery Systems using a squeegee or solvent-based systems using a coating bar Anilox rollers or printing processes should be mentioned in this context.
  • Both the coating bars and the doctor blade technology are suitable for the subsequent coating of the adhesive on the separating layer. It is also possible to apply adhesive based on styrene-isoprene-styrene as a hotmelt pressure-sensitive adhesive to the separating layer by means of known technology in the production of the adhesive tapes used according to the invention.
  • Adhesive tape is individualized, preferably by printing with standard colors, especially on the adhesive side.
  • Adhesive tape used according to the invention has a covering on the open adhesive Wear an appropriate release liner to prevent premature or unintentional to avoid automatic closing of the shipping envelope and that Envelopes can only be closed if they are intended to be sent.
  • an adhesive tape for sealing Envelopes and the like in particular provide, on the one hand, an adhesive tape indicate which one has a release liner on the side coated with adhesive, on the other hand, the adhesive side of the adhesive tape applied to the shipping envelope to be equipped with a release liner.
  • Covering the web-shaped adhesive tape with a suitable release liner can for example after coating and drying the adhesive in one Laminating done.
  • the adhesive tape has a covering applied in the manufacturing process a release liner on the side covered with adhesive.
  • the adhesive tape is used suitable applicators during the packaging process of an envelope material to apply to a shipping envelope by in one embodiment of the Adhesive tape used according to the invention one half of the adhesive tape on the The closure flap adheres, the other one, covered on the adhesive side with release liner Half protrudes over the edge of the closure flap and for closing the bag is available.
  • the inventive concept further includes that for the envelope seal Adhesive tape is used, which has the entire surface on the side carrying the adhesive a release liner is covered.
  • Adhesive tape is used, which has the entire surface on the side carrying the adhesive a release liner is covered.
  • Adhesive tape for the variant of the release liner applied offset to the adhesive tape in that the release liner both over the back of the flap and on the edge of the adhesive tape protruding over the flap.
  • Another variant of the use according to the invention consists of an adhesive tape Full coverage of the side provided with adhesive by a lengthwise direction slotted release liner.
  • the release liner becomes a tape roll by another cutter or Punching machine slotted.
  • an adhesive tape according to the invention in that a release liner only partially covers the side coated with adhesive Longitudinal direction, e.g. half-sided, covered, this embodiment of the adhesive tape is created by removing, for example, half of the slotted release liner immediately after the slitting process. Advantages arise here due to the simplified process control for the manufacturers of shipping envelopes.
  • an adhesive tape without Release liner is used, the packaging process of the envelope provides for Apply release liner separately to the flap of the envelope.
  • the release liner can be designed in such a way that it consists of a paper or film-based carrier. Release liners with a more complicated structure based on a carrier made, for example, of paper coated with polyethylene can also be used.
  • the suitable release liner has a release coating which is applied to at least one side of the carrier which faces the adhesive to be covered of the adhesive tape used according to the invention.
  • Suitable release liners are made of silicone systems. UV-curing silicone systems based on 100% are preferred as a release coating, but solvent-based silicone systems can also be used to cover the adhesive tapes.
  • Basis weights of release coatings for release liners range from 0.1 to 4 g / m 2 depending on the substrate. For example, for film carriers with 0.1 to 0.5 g / m 2 a lower application weight is required than for release papers with approximately 0.7 up to 3.5 g / m 2 .
  • the adhesive tape 1 consists of a preferably transparent thermoplastic Film 10 with sufficient internal strength, which is as follows ensures described use.
  • the thermoplastic film 10 has an upper one Surface 11 and a lower surface 12.
  • the primer layer 14 is on the arranged upper film surface 12 that it gives a lettering, which in the case of Detachment of the adhesive tape 1 on the surface of the envelope can be seen.
  • a separating layer 15 is applied to the primer layer 14 and the remaining lower film surface 12.
  • the separating layer 15 consists of a colored material. The color and the color density are selected so that on the one hand they offer a sufficient color contrast to the usual shipping envelope colors, so that the lettering formed is legible, but they also allow a print 17 of a company logo or brand mark lying on the adhesive layer 16 to be clearly seen through ,
  • the adhesive layer 16 which has sufficient security against sticking ensures the object to be closed, applied to the separating layer 15.
  • the primer layer 14 adheres very strongly to the lower film surface 12.
  • the adhesion of the Separating layer 15 on lower film surface 12 is less than that of separating layer 15 on the primer layer 14.
  • the adhesion of the adhesive layer 16 to the release layer 15 is greater than the adhesion of the separating layer 15 to the lower film surface 12 and at least as great as the adhesion of the separating layer 15 to the primer layer 14.
  • the adhesion of the adhesive layer 16 to a surface in accordance with the use is greater than the adhesion of the separating layer 15 on the lower film surface 12.
  • the primer layer 14 is the liability of Primer layer 14 on the lower film surface 12 and on the separating layer 15 is greater than the adhesion of the adhesive layer 16 to a surface according to the use.
  • the adhesion of the separating layer 15 to the lower film surface 12 is less than the adhesion of the separating layer 15 to the adhesive layer 16.
  • a preferably transparent separating layer 13 is applied to the upper surface 11 of the film carrier 10 and adheres relatively strongly to the upper surface 11.
  • the adhesion of the separating layer 13 to the adhesive layer 16 is low, so that the adhesive tape 1 wound into a roll can be unwound without the separating layer 15 separating from the lower film surface 12.
  • the outer surface of the Adhesive 16 applied a colored print 17 of a company logo or trademark become.
  • the preferred embodiment of the adhesive tape for the use according to the invention is shown as 1 according to FIG. 2, the adhesive tape being used for securing or closing an object such as a shipping envelope 2.
  • the shipping envelope 2 has a closure flap 3 and an envelope surface 4.
  • the closure flap 3 is folded down onto the line 5 to close the shipping envelope 2.
  • the adhesive tape 1 is glued to both the closure flap 3 and the envelope surface 4.
  • the adhesive tape 1 in the area of the line 5 must be removed in order to be able to unfold the flap 3. If the adhesive tape 1 used is a commercially available adhesive tape, after removing the contents from the closure flap 2 and carefully re-adhering the adhesive tape 1, it cannot be seen that the adhesive tape 1 has been removed before.
  • an adhesive tape 1 according to the invention is used to close the envelope used, opening and closing in the manner described is not unnoticed possible.
  • the adhesive tape 1 separates according to Figure 5.
  • the separating layer 15 separates in the area in which it is in direct contact with the Film surface 12 is from the film 10 and remains on the envelope surface 4.
  • Adhesive layer 16 from the cover surface 4 and remains on the carrier film 10.
  • the word "OPENED" is visible as lettering on envelope surface 4 and as more direct colored lettering on the carrier 10.
  • the lettering on the carrier film 10 by the when applying and Detaching deformed carrier 10 is no longer congruent in the free lettering on the Insert cover surface.
  • FIGS 6 and 7 illustrate possibilities in the use of the invention
  • Adhesive tape the layer of adhesive 16 protruding on the closure flap 3 applied adhesive tape 1 with a release liner 18 to cover an automatic To prevent the envelope 2 from closing.
  • FIG. 6 shows the case of covering with a release liner 18 when the adhesive tape 1 is not in place offset location. This results in an overlap of the release liner 18 with the Flap 3 on its underside.
  • FIG. 7 shows the case of covering with a release liner 18 for the adhesive tape 1 offset position.
  • the Release Liner 18 does not protrude beyond the Flap 3 glued edge of the adhesive tape 1 also.
  • the cases shown result from the overlap or the excess of the release Liners 18 handling aids for the user of the envelope.
  • the inventive concept encompasses the use of the adhesive tape set out in the claims as a security closure for clearly recognizing an unauthorized attempt to open or an opening for a large number of valuable or sensitive goods.
  • An important field of application is the protection of various consumer goods against theft, falsification of content and protection against pirated copies.
  • the unnoticed opening, theft and falsification of sensitive goods is avoided by using the adhesive tape set out in the claims.
  • the use of the adhesive tape set out in the claims is particularly suitable for securing the opening or packaging of shipping envelopes, bags, envelopes, pouches and the like, for example made of polyethylene or easily cleavable cardboard packaging, due to the slight internal separation over the entire surface when the adhesive tape is removed.
  • the surface of the film that is coated with a primer layer and a release layer is treated with Corona adhesive before coating.
  • the surface energy is> 42mN / m.
  • a release varnish based on a standard 100% silicone system (UV-curing) is used Production of the adhesive tapes according to the invention used.
  • NeoRez R560 from Zeneca resins, The Netherlands
  • a release layer based on a solvent-based printing ink is used to produce the adhesive tapes according to the invention. Description: 15VAA printing ink from Michael Huber Ober GmbH, Germany
  • a release paper based on a 100% silicone system is used. Description: KS 900 yellow 52B / 52B 8 from Laufenberg, Germany
  • the film a is coated with a standard silicone-based release coating using the usual standard technology
  • the film c1 is coated with the primer layer using the flexographic printing technique.
  • a flexographic printing block is used, the raised parts of the word Show "OPENED".
  • the laboratory flexographic printing plate and the web speed are set so that after drying, a mass application of about 1 to 3 g / sqm of the primer layer was measured becomes.
  • the coating takes place on a laboratory coating system with a working width of 500 mm and a coating speed of 10 m / min. Behind the coating station with a wire knife applicator there is a drying tunnel that can be heated with hot air (approx. 100 ° C) is operated. The coated film was immediately used without any storage time.
  • the film c2 is coated with the separating layer by means of a wire doctor.
  • the Wire doctor and the coating speed are set so that after the Drying the coated film, a mass application of the separation layer of about 25 g / sqm is measured.
  • the coating was carried out on a coater with a Working width of 500 mm and a coating speed of 10 m / min. Behind the There is a drying tunnel in the coating station, which can be heated with hot air (approx. 100 ° C) is operated. The coated film is immediately used without storage.
  • the film c3 is coated with the adhesive by means of a wire doctor.
  • the Wire doctor and the coating speed are set 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 coater with a working width of 500 mm and a coating speed of 10 m / min. Behind the coating station with Wire knife applicator there is a drying tunnel with hot air (approx. 100 ° C) is operated.
  • the bale-shaped adhesive web After drying in a laminating unit, the bale-shaped adhesive web is coated with the Release liner covered.
  • the coated film was made up to a width of 25 mm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
EP02019332A 2001-09-19 2002-08-29 Utilisation d'une bande adhesive de securité pour révéler l'ouverture non-authorisée d'un emballage postal Withdrawn EP1296306A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10146270A DE10146270A1 (de) 2001-09-19 2001-09-19 Verwendung eines Sicherheitsklebebandes zum Anzeigen unautorisierter Öffnungsversuche an Versandpackungen
DE10146270 2001-09-19

Publications (2)

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EP1296306A2 true EP1296306A2 (fr) 2003-03-26
EP1296306A3 EP1296306A3 (fr) 2006-07-26

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EP02019332A Withdrawn EP1296306A3 (fr) 2001-09-19 2002-08-29 Utilisation d'une bande adhesive de securité pour révéler l'ouverture non-authorisée d'un emballage postal

Country Status (4)

Country Link
US (1) US20030056891A1 (fr)
EP (1) EP1296306A3 (fr)
JP (1) JP2003160772A (fr)
DE (1) DE10146270A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1677973A4 (fr) * 2003-10-27 2007-06-13 Davik Self Adhesive Tapes Agri Ruban inviolable
WO2009092640A1 (fr) * 2008-01-22 2009-07-30 Tesa Se Film support, notamment pour bande adhésive et utilisation correspondante
WO2011016877A1 (fr) * 2009-08-07 2011-02-10 Multi Packaging Solutions Emballage de sécurité
EP2877343A4 (fr) * 2012-02-23 2016-07-27 Chroma Paper Llc Procédé de contrôle de thermosoudage et emballage pour emballage refermable
US9827741B2 (en) 2014-05-15 2017-11-28 Multi Packaging Solutions, Inc. Display device
US10329067B2 (en) 2015-08-21 2019-06-25 Multi Packaging Solutions, Inc. Security packaging
EP3511259A1 (fr) * 2018-01-11 2019-07-17 Papier-Mettler KG Pochette, en particulier pochette d'expédition pourvue d'au moins un adhésif
CN116218164A (zh) * 2023-03-20 2023-06-06 东莞市腾和新材料科技有限公司 一种便于印刷包装带及其制备方法
PL444143A1 (pl) * 2023-03-21 2024-09-23 Plast-Farb Spółka Z Ograniczoną Odpowiedzialnością Taśma zabezpieczająca i sposób wytwarzania taśmy zabezpieczającej

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US7223015B2 (en) * 2003-06-25 2007-05-29 Superior Bag Manufacturing Corporation Tamper-evident closure
DE10361164A1 (de) * 2003-12-22 2005-08-04 Tesa Ag Klebfolie mit rückstellenden Eigenschaften
DE102005043221A1 (de) * 2005-09-09 2007-03-15 Tesa Ag Selbstklebeband
KR100791774B1 (ko) * 2007-09-18 2008-01-03 정두호 전사지를 이용한 인테리어자재 제조방법 및 그 방법을 이용한 인테리어 자재
DE102008033323A1 (de) * 2008-07-16 2010-01-21 Tesa Se Sicherheitsetikett
WO2011030480A1 (fr) * 2009-09-14 2011-03-17 シャープ株式会社 Appareil et procédé de décollement d'un film adhésif
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
US9199771B2 (en) * 2013-03-15 2015-12-01 Brady Worldwide, Inc. Non-tacky, tamper-evident label
GB2508264A (en) * 2013-09-03 2014-05-28 Mercian Labels Ltd Tamper evident label / tape having an adhesive with a UV resistant additive.
US20150342315A1 (en) * 2014-05-29 2015-12-03 Superior Bag Manufacturing Company LLC Single use secure travel bag with tamper-evident closure
US20190031923A1 (en) 2017-07-26 2019-01-31 3M Innovative Properties Company Backing for adhesive tape with thermal resistance
CN108119091B (zh) * 2017-09-08 2020-08-11 中国石油天然气股份有限公司 一种固井完井管柱及方法
CN109064882B (zh) * 2018-07-18 2021-01-29 业成科技（成都）有限公司 显示装置及其制备方法

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US4121003A (en) 1977-04-22 1978-10-17 Monarch Marking Systems, Inc. Tamper indicating labels
US4184701A (en) 1978-02-10 1980-01-22 Monarch Marking Systems, Inc. Tamper proof label
GB2138396A (en) 1983-04-21 1984-10-24 Decoflex Ltd Bags with tamper indicators
DE3431239A1 (de) 1984-01-25 1985-07-25 Zweckform Werk Gmbh, 8150 Holzkirchen Sicherheitsetikett zum nachweis des unbefugten oeffnens einer verpackung
US4838708A (en) 1988-03-07 1989-06-13 Minnesota Mining And Manufacturing Company Security deposit bag
EP0404402A2 (fr) 1989-06-21 1990-12-27 Minnesota Mining And Manufacturing Company Bande indicatrice anti-vol
EP0460459A1 (fr) 1990-06-01 1991-12-11 Bührmann-Vromen Verpakking B.V. Sceau de garantie pour enveloppes
EP0491099A1 (fr) 1990-12-19 1992-06-24 The Kendall Company Fermeture inviolable et methode d'application
US5631068A (en) 1994-08-02 1997-05-20 Trigon Packaging Corporation Self-containing tamper evident tape and label
US5633058A (en) 1995-09-05 1997-05-27 Hoffer; Erik Message-indicating self-wound tape and method of making same

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GB1376003A (en) * 1971-05-28 1974-12-04 Avery Products Corp Fusible label construction
DE3714843A1 (de) * 1987-05-05 1988-11-17 Beiersdorf Ag Klebeband als wiederverschliessbarer verschluss
EP0633194B1 (fr) * 1993-07-09 1996-12-04 C. Vaucher Unternehmensberatung Enveloppe d'expédition
US6537634B2 (en) * 1999-12-29 2003-03-25 Tesa Ag Adhesive security tape for detecting unauthorized broaching of a package
DE19963709A1 (de) * 1999-12-29 2002-12-05 Tesa Ag Sicherheitsklebeband zum Nachweis des unbefugten Öffnens einer Verpackung

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Publication number Priority date Publication date Assignee Title
US4121003A (en) 1977-04-22 1978-10-17 Monarch Marking Systems, Inc. Tamper indicating labels
US4184701A (en) 1978-02-10 1980-01-22 Monarch Marking Systems, Inc. Tamper proof label
GB2138396A (en) 1983-04-21 1984-10-24 Decoflex Ltd Bags with tamper indicators
DE3431239A1 (de) 1984-01-25 1985-07-25 Zweckform Werk Gmbh, 8150 Holzkirchen Sicherheitsetikett zum nachweis des unbefugten oeffnens einer verpackung
US4838708A (en) 1988-03-07 1989-06-13 Minnesota Mining And Manufacturing Company Security deposit bag
EP0404402A2 (fr) 1989-06-21 1990-12-27 Minnesota Mining And Manufacturing Company Bande indicatrice anti-vol
EP0460459A1 (fr) 1990-06-01 1991-12-11 Bührmann-Vromen Verpakking B.V. Sceau de garantie pour enveloppes
EP0491099A1 (fr) 1990-12-19 1992-06-24 The Kendall Company Fermeture inviolable et methode d'application
US5631068A (en) 1994-08-02 1997-05-20 Trigon Packaging Corporation Self-containing tamper evident tape and label
US5633058A (en) 1995-09-05 1997-05-27 Hoffer; Erik Message-indicating self-wound tape and method of making same

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1677973A4 (fr) * 2003-10-27 2007-06-13 Davik Self Adhesive Tapes Agri Ruban inviolable
WO2009092640A1 (fr) * 2008-01-22 2009-07-30 Tesa Se Film support, notamment pour bande adhésive et utilisation correspondante
CN101978010A (zh) * 2008-01-22 2011-02-16 德莎欧洲公司 载体膜，特别是用于胶带的载体膜，及其用途
US9694958B2 (en) 2009-08-07 2017-07-04 Multi Packaging Solutions, Inc. Security packaging
WO2011016877A1 (fr) * 2009-08-07 2011-02-10 Multi Packaging Solutions Emballage de sécurité
US8109388B2 (en) 2009-08-07 2012-02-07 Multi Packaging Solutions, Inc. Security packaging
US9126727B2 (en) 2009-08-07 2015-09-08 Multi Packaging Solutions, Inc. Security packaging
EP2877343A4 (fr) * 2012-02-23 2016-07-27 Chroma Paper Llc Procédé de contrôle de thermosoudage et emballage pour emballage refermable
US9827741B2 (en) 2014-05-15 2017-11-28 Multi Packaging Solutions, Inc. Display device
US10329067B2 (en) 2015-08-21 2019-06-25 Multi Packaging Solutions, Inc. Security packaging
US11008147B2 (en) 2015-08-21 2021-05-18 Multi Packaging Solutions, Inc. Security packaging
EP3511259A1 (fr) * 2018-01-11 2019-07-17 Papier-Mettler KG Pochette, en particulier pochette d'expédition pourvue d'au moins un adhésif
CN116218164A (zh) * 2023-03-20 2023-06-06 东莞市腾和新材料科技有限公司 一种便于印刷包装带及其制备方法
PL444143A1 (pl) * 2023-03-21 2024-09-23 Plast-Farb Spółka Z Ograniczoną Odpowiedzialnością Taśma zabezpieczająca i sposób wytwarzania taśmy zabezpieczającej
PL247373B1 (pl) * 2023-03-21 2025-06-23 Plast Farb Spolka Z Ograniczona Odpowiedzialnoscia Taśma zabezpieczająca i sposób wytwarzania taśmy zabezpieczającej

Also Published As

Publication number Publication date
US20030056891A1 (en) 2003-03-27
DE10146270A1 (de) 2003-04-03
JP2003160772A (ja) 2003-06-06
EP1296306A3 (fr) 2006-07-26

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