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WO2008014529A1 - Falsification-proof foil and blister pack comprising this foil - Google Patents

Falsification-proof foil and blister pack comprising this foil Download PDF

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Publication number
WO2008014529A1
WO2008014529A1 PCT/AT2007/000367 AT2007000367W WO2008014529A1 WO 2008014529 A1 WO2008014529 A1 WO 2008014529A1 AT 2007000367 W AT2007000367 W AT 2007000367W WO 2008014529 A1 WO2008014529 A1 WO 2008014529A1
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WO
WIPO (PCT)
Prior art keywords
film according
adhesive
proof
layer
foil
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.)
Ceased
Application number
PCT/AT2007/000367
Other languages
German (de)
French (fr)
Inventor
Thomas Ullrich
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.)
Teich AG
Original Assignee
Teich AG
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Filing date
Publication date
Application filed by Teich AG filed Critical Teich AG
Publication of WO2008014529A1 publication Critical patent/WO2008014529A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/32Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents
    • B65D75/325Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents one sheet being recessed, and the other being a flat not- rigid sheet, e.g. puncturable or peelable foil
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2203/00Decoration means, markings, information elements, contents indicators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2401/00Tamper-indicating means
    • B65D2401/55Tamper-indicating means based on a change or a contrast in colour

Definitions

  • Anti-counterfeit film and blister pack comprising this film
  • the invention relates to a tamper-proof film, comprising a composite of at least one transparent layer and at least one further layer, wherein these layers are connected to one another via an adhesive layer.
  • Composite films of this type are used, for example, as closure films for packages, so-called “peel-off” packages, in which the closure film is removed from a container by pulling off during the opening process.
  • these composite films are also used to a great extent in the production of blister packs or blister packs, which are mainly used for receiving medicaments.
  • the abovementioned composite films are subjected to a deep-drawing process, so that the depressions required for receiving tablets or capsules are formed. By pressing on the back of a recess, it is deformed, and the tablet or capsule contained in it can be removed from the package while pushing through the sealing film.
  • Object of the present invention is therefore to avoid the known disadvantages of allegedly forgery-proof packaging films.
  • a tamper-proof film comprising the aforementioned composite, which is characterized in that the adhesive layer additionally contains a photochromic substance.
  • photochromic is the name given to a light which is visible through ultraviolet light or sunlight. called reversible conversion of one substance into another, which differs from the starting compound by its color (absorption spectrum).
  • Photochromic substances within the meaning of the invention are likewise substances which show a first color change in the UV range and a second color change in the short wave range. The reverse reaction can be ⁇ dissolved by light of a different wavelength or by heat or occur spontaneously.
  • the invention further relates to a blister pack with a bottom foil and a lid foil sealed with it, which is characterized in that it has a tamper-proof foil according to claim 1 as a bottom foil.
  • the invention further relates to a blister pack with a bottom film and a lid film sealed therewith, which is characterized in that the lid film is a tamper-proof film according to claim 1.
  • FIG. 1 shows a possible composite 2 for the tamper-proof foil 1
  • FIG. 2 shows a possible embodiment for a blister pack 9.
  • the composite 2, as shown by way of example in FIG. 1, is produced in such a way that an adhesive layer 4, which is mixed with the photochromic substance 5, is applied to the transparent layer 3 by laminating.
  • an adhesive layer 4 which is mixed with the photochromic substance 5, is applied to the transparent layer 3 by laminating.
  • oriented polyamide having a layer thickness of 12 .mu.m-40 .mu.m, preferably 25 .mu.m, is used as the transparent layer 3.
  • the adhesive which is for example a polyurethane adhesive, is mixed with the photochromic substance 5 and taken up in a suitable solvent.
  • the application amount of the adhesive in the dry state is 2 to 8 g / m 2 .
  • the proportion of the photochromic substance should be at least 0.05% by weight, preferably 0.2 to 2.0% by weight, based on 100% by weight of solids, consisting of adhesive and photochromic substance.
  • photochromic substances for example, spironaphthooxazines or naphthopyrans can be used; when exposed to UV light or sunlight, a color development becomes visible, but it completely fades as soon as there is no UV or sunlight exposure. From the group of polycyclic pyrans or oxazines it is also possible to select photochromic dyes which are in the UV range of 315 nm show a first color change up to 400 nm and a second color change in the short-wave range from 400 nm to 420 nm.
  • the layer 6 is brought to the adhesive layer 4, so that an adhesive pre-bond can be formed, on which in the sequence by means of a bonding agent 8, a sealing layer 7 is applied.
  • aluminum foils having a layer thickness of 30 .mu.m-70 .mu.m are suitable as layer 6.
  • Particularly preferred is the use of soft aluminum in the event that the composite is subjected to a deep drawing process in its further use. Since aluminum itself does not adhere to the sealing layer 7, for example a PVC layer, an additional adhesion promoter layer 8, for example a polyurethane adhesive, is provided.
  • the tamper-proof foil 1 is used as a bottom foil for a blister pack, it is subjected to a deep-drawing process to form depressions for receiving tablets 10. In this way, as shown in Fig. 2, the bottom sheet 12 is produced. Immediately after filling this base film with the tablets or capsules 10, a gas-tight seal is formed by the lid sheet 11 is connected by sealing with the bottom sheet 12.
  • the carrier material 13 of the cover film 11 may be, for example, an aluminum foil, which is provided with a sealing layer 14 on its side facing the bottom foil 12. Due to the applied sealing pressure during the filling process, a gas-tight packaging is formed.
  • the procedure is that the cover film or the bottom film is examined with a UV lamp, with a wavelength range of 315 nm - 400 nm is set.
  • a color development which is caused by the photochromic substance 5 in the overlying layer becomes visible, since a transparent substance is used as layer 3.
  • this color development is reversible, as soon as the cover sheet 11 or the bottom sheet 12 is again removed from the UV source, the original state is obtained.
  • the end user is therefore not unsettled by any color differences in the lid or bottom film because due to the reversible properties of the photochromic substance 5 used, its original state is restored after removal of the UV source.
  • an analytical laboratory check is often required, for which photochromic fabrics with a double color change are selected. In this case, the second color change provides absolute certainty that the original product was obtained.
  • the photochromic substance 5 is compatible with the adhesive used in the adhesive layer 4, wherein
  • Polyurethane, polyester or polyacrylic adhesive are particularly suitable.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Abstract

The invention relates to a falsification-proof foil including a composite structure (2) made of at least one transparent layer (3) and at least one other layer (6), wherein these layers are bonded by means of an adhesive layer (4), which also has a photochromic material (5) with reversible dye qualities. If the falsiffication-proof foil is exposed to UV radiation or sunlight, a detectable but reversible color change occurs so that because of this proof, original articles can be distinguished from falsified articles.

Description

Fälschungssichere Folie sowie Blisterpackung umfassend diese Folie Anti-counterfeit film and blister pack comprising this film

Die Erfindung betrifft eine fälschungssichere Folie, umfassend einen Verbund aus zumindest einer transparenten Schicht und zumindest einer weiteren Schicht, wobei diese Schichten über eine Kleberschicht miteinander verbunden sind.The invention relates to a tamper-proof film, comprising a composite of at least one transparent layer and at least one further layer, wherein these layers are connected to one another via an adhesive layer.

Verbundfolien dieser Art werden beispielsweise als Verschlussfolien für Packungen, sogenannte "Peel-off"-Packungen eingesetzt, bei denen man beim Öffnungsvorgang die Verschlussfolie von einem Behälter durch Abziehen entfernt. In großem Ausmaß werden diese Verbundfolien aber auch bei der Herstellung von Durchdrück- oder Blis- terpackungen, welche hauptsächlich zur Aufnahme von Arzneimitteln verwendet werden, eingesetzt. Dabei werden die vorgenannten Verbund- folien einem Tiefziehverfahren unterworfen, sodass die für die Aufnahme von Tabletten oder Kapseln erforderlichen Vertiefungen ausgebildet werden. Durch Drücken auf der Rückseite einer Vertiefung, wird diese verformt, und die in ihr enthaltene Tablette oder Kapsel kann unter Durchstoßung der Verschlussfolie aus der Packung entnommen werden.Composite films of this type are used, for example, as closure films for packages, so-called "peel-off" packages, in which the closure film is removed from a container by pulling off during the opening process. However, these composite films are also used to a great extent in the production of blister packs or blister packs, which are mainly used for receiving medicaments. In this case, the abovementioned composite films are subjected to a deep-drawing process, so that the depressions required for receiving tablets or capsules are formed. By pressing on the back of a recess, it is deformed, and the tablet or capsule contained in it can be removed from the package while pushing through the sealing film.

Da im Laufe der letzten Jahre das Ausmaß an gefälschten Arzneimitteln weltweit relativ stark gestiegen ist, ist ein hoher Bedarf an fälschungssicherem Verpackungsmaterial gegeben. Es wurde daher unter anderem versucht, wie bei Banknoten bekannt, Verpa- ckungsmaterialien auch für die Pharmaindustrie mit Hologrammen zu versehen. Dabei hat es sich gezeigt, dass auch Hologramme, obwohl deren Herstellung relativ aufwendig ist, mit zunehmender technischer Entwicklung gefälscht werden können. Diese Fälschungen können nur von einem Fachmann als solche charakterisiert oder erkannt werden, da es für den Arzneimittelhersteller selbst nur schwer möglich ist, festzustellen, ob das Hologramm gefälscht ist oder nicht, wenn er nicht über entsprechende Vergleichsmuster verfügt.As the level of counterfeit medicines has risen relatively sharply worldwide in recent years, there is a high demand for counterfeit-proof packaging material. Attempts have therefore been made, as is known with bank notes, to provide packaging materials with holograms for the pharmaceutical industry as well. It has been shown that even holograms, although their production is relatively expensive, can be falsified with increasing technical development. These counterfeits can only be characterized or recognized as such by a person skilled in the art, since it is difficult for the drug manufacturer himself to determine whether the hologram is forged or not if he does not have corresponding comparison samples.

Aufgabe der vorliegenden Erfindung ist es daher, die bekannten Nachteile von angeblich fälschungssicheren Verpackungsfolien zu vermeiden.Object of the present invention is therefore to avoid the known disadvantages of allegedly forgery-proof packaging films.

Erfindungsgemäß wird eine fälschungssichere Folie, umfassend den eingangs genannten Verbund vorgeschlagen, welche dadurch gekennzeichnet ist, dass die Kleberschicht zusätzlich einen photochromen Stoff enthält. Photochrom ist im Sinne der Erfindung die Bezeichnung für eine durch sichtbares, ultraviolettes Licht oder Sonnenlicht hervor- gerufene reversible Umwandlung eines Stoffes in einen anderen, der sich von der Ausgangsverbindung durch seine Farbe (Absorptionsspektrum) unterscheidet. Photochrome Stoffe im Sinne der Erfindung sind ebenso Stoffe, die im UV-Bereich einen ersten Farbumschlag und im kurzwelligen Bereich einen zweiten Farbumschlag zeigen. Die Rückreaktion kann durch Licht anderer Wellenlänge oder durch Wärme ausge¬ löst werden oder spontan erfolgen.According to the invention, a tamper-proof film comprising the aforementioned composite is proposed, which is characterized in that the adhesive layer additionally contains a photochromic substance. For the purposes of the present invention, photochromic is the name given to a light which is visible through ultraviolet light or sunlight. called reversible conversion of one substance into another, which differs from the starting compound by its color (absorption spectrum). Photochromic substances within the meaning of the invention are likewise substances which show a first color change in the UV range and a second color change in the short wave range. The reverse reaction can be ¬ dissolved by light of a different wavelength or by heat or occur spontaneously.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind gemäß Unteransprüche offenbart. Die Erfindung betrifft weiters eine Durchdrückpackung mit einer Bodenfolie und einer damit versiegelten Deckelfolie, welche dadurch gekennzeichnet ist, dass sie eine fälschungssichere Folie gemäß Anspruch 1 als Bodenfolie aufweist.Further advantageous embodiments of the invention are disclosed according to the subclaims. The invention further relates to a blister pack with a bottom foil and a lid foil sealed with it, which is characterized in that it has a tamper-proof foil according to claim 1 as a bottom foil.

Die Erfindung betrifft weiters eine Durchdrückpackung mit einer Bodenfolie und einer damit versiegelten Deckelfolie, welche dadurch gekennzeichnet ist, dass die Deckelfolie eine fälschungssichere Folie gemäß Anspruch 1 ist.The invention further relates to a blister pack with a bottom film and a lid film sealed therewith, which is characterized in that the lid film is a tamper-proof film according to claim 1.

Die Erfindung wird im Folgenden anhand möglicher Ausführungsformen der Erfindung näher erläutert, wobei Fig. 1 einen möglichen Verbund 2 für die fälschungssichere Folie 1 und Fig. 2 eine mögliche Ausführungsform für eine Blisterpackung 9 zeigt.The invention will be explained in more detail below on the basis of possible embodiments of the invention, wherein FIG. 1 shows a possible composite 2 for the tamper-proof foil 1 and FIG. 2 shows a possible embodiment for a blister pack 9.

Der Verbund 2, wie beispielhaft in Fig. 1 gezeigt, wird derart hergestellt, dass auf die transparente Schicht 3 eine Kleberschicht 4, welche mit dem photochromen Stoff 5 versetzt ist, durch Kaschie- ren aufgebracht wird. Als transparente Schicht 3 wird beispielsweise orientiertes Polyamid mit einer Schichtdicke von 12 um - 40 um, vorzugsweise 25 um, eingesetzt. Zur Herstellung der Kleberschicht 4 wird der Kleber, welcher beispielsweise ein Polyurethan-Kleber ist, mit dem photochromen Stoff 5 versetzt und in einem geeigneten Lö- sungsmittel aufgenommen. Die Auftragsmenge des Klebers im trockenen Zustand beträgt 2 bis 8 g/m2. Der Anteil des photochromen Stoffes soll zumindest 0,05 Gew.%, vorzugsweise 0,2 bis 2,0 Gew.% bezogen auf 100 Gew.% Feststoffe, bestehend aus Kleber und photochromen Stoff, aufweisen. Als photochrome Stoffe können beispielsweise Spironaphthooxazine oder Naphthopyrane eingesetzt werden; werden diese UV-Licht oder Sonnenlicht ausgesetzt, so wird eine Farbentwicklung sichtbar, welche aber zur Gänze verblasst, sobald keine UV- Strahlung oder Bestrahlung durch Sonnenlicht erfolgt. Aus der Gruppe der polycyklischen Pyrane oder Oxazine können des Weiteren photo- chrome Farbstoffe ausgewählt werden, welche im UV-Bereich von 315 nm bis 400 nm einen ersten Farbumschlag und im kurzwelligen Bereich von 400 nm bis 420 nm einen zweiten Farbumschlag zeigen.The composite 2, as shown by way of example in FIG. 1, is produced in such a way that an adhesive layer 4, which is mixed with the photochromic substance 5, is applied to the transparent layer 3 by laminating. For example, oriented polyamide having a layer thickness of 12 .mu.m-40 .mu.m, preferably 25 .mu.m, is used as the transparent layer 3. To produce the adhesive layer 4, the adhesive, which is for example a polyurethane adhesive, is mixed with the photochromic substance 5 and taken up in a suitable solvent. The application amount of the adhesive in the dry state is 2 to 8 g / m 2 . The proportion of the photochromic substance should be at least 0.05% by weight, preferably 0.2 to 2.0% by weight, based on 100% by weight of solids, consisting of adhesive and photochromic substance. As photochromic substances, for example, spironaphthooxazines or naphthopyrans can be used; when exposed to UV light or sunlight, a color development becomes visible, but it completely fades as soon as there is no UV or sunlight exposure. From the group of polycyclic pyrans or oxazines it is also possible to select photochromic dyes which are in the UV range of 315 nm show a first color change up to 400 nm and a second color change in the short-wave range from 400 nm to 420 nm.

Anschließend wird die Schicht 6 an die Kleberschicht 4 herangeführt, sodass ein klebender Vorverbund gebildet werden kann, auf welchen in der Folge mittels eines Haftvermittlers 8 eine Siegelschicht 7 aufgebracht wird.Subsequently, the layer 6 is brought to the adhesive layer 4, so that an adhesive pre-bond can be formed, on which in the sequence by means of a bonding agent 8, a sealing layer 7 is applied.

Als Schicht 6 eignen sich beispielsweise Aluminiumfolien mit einer Schichtdicke von 30 μm - 70 um. Besonders bevorzugt ist der Einsatz von weichem Aluminium für den Fall, dass der Verbund bei seiner weiteren Verwendung einem Tiefziehprozess unterworfen wird. Da Aluminium selbst an der Siegelschicht 7, beispielsweise eine PVC- Schicht, nicht haftet, wird eine zusätzliche Haftvermittlerschicht 8, beispielsweise ein Polyurethan-Kleber, vorgesehen.For example, aluminum foils having a layer thickness of 30 .mu.m-70 .mu.m are suitable as layer 6. Particularly preferred is the use of soft aluminum in the event that the composite is subjected to a deep drawing process in its further use. Since aluminum itself does not adhere to the sealing layer 7, for example a PVC layer, an additional adhesion promoter layer 8, for example a polyurethane adhesive, is provided.

Wird die fälschungssichere Folie 1 als Bodenfolie für eine Blisterpackung verwendet, so wird diese zur Ausbildung von Vertiefungen für die Aufnahme von Tabletten 10 einem Tiefziehverfahren unterworfen. Auf diese Art wird, wie in Fig. 2 gezeigt, die Bodenfolie 12 hergestellt. Unmittelbar nach dem Befüllen dieser Bodenfolie mit den Tabletten oder Kapseln 10 wird ein gasdichter Verschluss dadurch gebildet, dass die Deckelfolie 11 durch Siegeln mit der Bodenfolie 12 verbunden wird. Das Trägermaterial 13 der Deckelfolie 11 kann beispielsweise eine Aluminiumfolie sein, welche an ihrer der Bodenfolie 12 zugewandten Seite mit einer Siegelschicht 14 versehen ist. Durch den angewandten Siegeldruck beim Abfüllprozess wird eine gasdichte Verpackung gebildet.If the tamper-proof foil 1 is used as a bottom foil for a blister pack, it is subjected to a deep-drawing process to form depressions for receiving tablets 10. In this way, as shown in Fig. 2, the bottom sheet 12 is produced. Immediately after filling this base film with the tablets or capsules 10, a gas-tight seal is formed by the lid sheet 11 is connected by sealing with the bottom sheet 12. The carrier material 13 of the cover film 11 may be, for example, an aluminum foil, which is provided with a sealing layer 14 on its side facing the bottom foil 12. Due to the applied sealing pressure during the filling process, a gas-tight packaging is formed.

Freilich ist es auch möglich, anstelle der vorgenannten, beispielhaften Deckelfolie 11, die fälschungssichere Folie 1 mit einem Verbund gemäß Fig. 1 einzusetzen.Of course, it is also possible, instead of the aforementioned, exemplary cover sheet 11, to use the tamper-proof film 1 with a composite according to FIG.

Bei der Überprüfung, ob es sich bei den abgefüllten Kapseln oder Tabletten 10 nunmehr um Originalware oder um gefälschte Ware handelt, wird insofern vorgegangen, als mit einer UV-Lampe die Deckelfolie oder die Bodenfolie untersucht wird, wobei ein Wellenlängenbereich von 315 nm - 400 nm eingestellt wird. Dabei wird eine Farbentwicklung, welche durch den photochromen Stoff 5 in der KIe- berschicht hervorgerufen wird, sichtbar, da als Schicht 3 ein transparenter Stoff eingesetzt wird. Allerdings ist diese Farbentwicklung reversibel, da, sobald die Deckelfolie 11 oder die Bodenfolie 12 wiederum von der UV-Quelle entfernt wird, der ursprüngliche Zustand erhalten wird. Der Endverbraucher wird daher durch etwaige farbliche Unterschiede in der Deckel- oder Bodenfolie nicht verunsichert, da aufgrund der reversiblen Eigenschaften des eingesetzten photochromen Stoffes 5, sein ursprünglicher Zustand nach Entfernen der UV-Quelle wieder hergestellt wird. Für besonders sensible Verpackungslösungen ist oftmals eine analytische Überprüfung im Labor erforderlich, wofür photochrome Stoffe mit zweifachem Farbumschlag ausgewählt werden. In diesem Fall gibt der zweite Farbumschlag absolute Gewiss- heit, dass Originalware erhalten wurde.When checking whether the filled capsules or tablets 10 are now original goods or counterfeit goods, the procedure is that the cover film or the bottom film is examined with a UV lamp, with a wavelength range of 315 nm - 400 nm is set. In this case, a color development which is caused by the photochromic substance 5 in the overlying layer becomes visible, since a transparent substance is used as layer 3. However, this color development is reversible, as soon as the cover sheet 11 or the bottom sheet 12 is again removed from the UV source, the original state is obtained. The end user is therefore not unsettled by any color differences in the lid or bottom film because due to the reversible properties of the photochromic substance 5 used, its original state is restored after removal of the UV source. For particularly sensitive packaging solutions, an analytical laboratory check is often required, for which photochromic fabrics with a double color change are selected. In this case, the second color change provides absolute certainty that the original product was obtained.

Voraussetzung für diese einfach durchführbare Verpackungs- lösung ist es allerdings, dass der photochrome Stoff 5 mit dem eingesetzten Kleber in der Kleberschicht 4 verträglich ist, wobeiHowever, a prerequisite for this easily implementable packaging solution is that the photochromic substance 5 is compatible with the adhesive used in the adhesive layer 4, wherein

Polyurethan-, Polyester- oder Polyacrylkleber besonders geeignet sind. Polyurethane, polyester or polyacrylic adhesive are particularly suitable.

Claims

Ansprüche claims 1. Falschungssichere Folie (1) umfassend einen Verbund (2) aus zumindest einer transparenten Schicht (3) und zumindest einer weite- ren Schicht (6), wobei diese Schichten über eine Kleberschicht (4) miteinander verbunden sind, dadurch gekennzeichnet, dass die Kleberschicht (4) zusatzlich einen photochromen Stoff (5) aufweist.1. Fold-resistant film (1) comprising a composite (2) of at least one transparent layer (3) and at least one further layer (6), wherein these layers are connected to one another via an adhesive layer (4), characterized in that the Adhesive layer (4) additionally a photochromic substance (5). 2. Falschungssichere Folie nach Anspruch 1, dadurch gekennzeichnet, dass der Anteil des photochromen Stoffes zumindest 0,05 Gew . % bezogen auf 100 Gew.% Feststoffe, bestehend aus photochromen Stoff und Kleber, betragt.2. Counterfeit-proof film according to claim 1, characterized in that the proportion of the photochromic substance at least 0.05 wt. % based on 100 wt.% Solids, consisting of photochromic substance and adhesive amounts. 3. Falschungssichere Folie nach Anspruch 2, dadurch gekennzeichnet, dass der Anteil des photochromen Stoffes 0,2 bis 2,0 Gew.% betragt. 3. Counterfeit-proof film according to claim 2, characterized in that the proportion of the photochromic substance amounts to 0.2 to 2.0 wt.%. 4. Falschungssichere Folie nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass der photochrome Stoff ein polycyklisches Pyran oder ein Oxazin ist.4. A failsafe film according to claim 1, 2 or 3, characterized in that the photochromic substance is a polycyclic pyran or an oxazine. 5. Falschungssichere Folie nach Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, dass der photochrome Stoff ein Spironaphthooxazin ist.5. A failsafe film according to claim 1, 2, 3 or 4, characterized in that the photochromic substance is a spironaphthooxazine. 6. Falschungssichere Folie nach Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, dass der photochrome Stoff ein Naphthopyran ist.6. A tamper-resistant film according to claim 1, 2, 3 or 4, characterized in that the photochromic substance is a naphthopyran. 7. Falschungssichere Folie nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Kleber ein Polyurethan-Kleber ist. 7. Torsion-proof film according to one of claims 1 to 6, characterized in that the adhesive is a polyurethane adhesive. 8. Falschungssichere Folie nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Kleber ein Polyester-Kleber ist.8. Tamper-resistant film according to one of claims 1 to 6, characterized in that the adhesive is a polyester adhesive. 9. Falschungssichere Folie nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Kleber ein Polyacryl-Kleber ist.9. Torsion-proof film according to one of claims 1 to 6, characterized in that the adhesive is a polyacrylic adhesive. 10. Falschungssichere Folie nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die transparente Schicht (3) aus orientiertem Polyamid besteht.10. Counterfeit-proof film according to one of claims 1 to 9, characterized in that the transparent layer (3) consists of oriented polyamide. 11. Falschungssichere Folie nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die weitere Schicht (6) eine Aluminiumschicht ist. 11. Counterfeit-proof film according to one of claims 1 to 10, characterized in that the further layer (6) is an aluminum layer. 12. Falschungssichere Folie nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass an die weitere Schicht (6) eine Siegelschicht (7) anschließt.12. Counterfeit-proof film according to one of claims 1 to 11, characterized in that the further layer (6) is followed by a sealing layer (7). 13. Durchdruckpackung (9) mit einer Bodenfolie (12) und einer damit versiegelten Deckelfolie (11), dadurch gekennzeichnet, dass die Bodenfolie (12) eine falschungssichere Folie nach einem der Ansprüche 1 bis 12 ist.13. Press-through pack (9) with a bottom film (12) and a lid film (11) sealed therewith, characterized in that the bottom film (12) is a falsification-proof film according to one of Claims 1 to 12 is. 14. Durchdrückpackung (9) mit einer Bodenfolie (12) und einer damit versiegelten Deckelfolie (11), dadurch gekennzeichnet, dass die Deckelfolie (11) eine fälschungssichere Folie nach einem der Ansprüche 1 bis 12 ist. 14. blister pack (9) with a bottom foil (12) and a lid foil (11) sealed therewith, characterized in that the lid foil (11) is a tamper-proof foil according to one of claims 1 to 12.
PCT/AT2007/000367 2006-08-01 2007-07-26 Falsification-proof foil and blister pack comprising this foil Ceased WO2008014529A1 (en)

Applications Claiming Priority (2)

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ATA1298/2006 2006-08-01
AT0129806A AT504071A1 (en) 2006-08-01 2006-08-01 IMPACT-RESISTANT FILM AND BLISTER PACKAGE COMPRISING THIS FILM

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EP2300860B1 (en) * 2008-07-11 2018-09-05 Thales Multilayer structure having a photochromic host matrix and manufacturing method
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CN117069989B (en) * 2023-08-18 2024-04-05 广东中鼎科技发展有限公司 Anti-counterfeiting TPU high and low temperature film and preparation method thereof

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