EP1628279A2 - Laserfilm - Google Patents

Laserfilm Download PDF

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Publication number
EP1628279A2
EP1628279A2 EP05106839A EP05106839A EP1628279A2 EP 1628279 A2 EP1628279 A2 EP 1628279A2 EP 05106839 A EP05106839 A EP 05106839A EP 05106839 A EP05106839 A EP 05106839A EP 1628279 A2 EP1628279 A2 EP 1628279A2
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EP
European Patent Office
Prior art keywords
laser
adhesive
film
laser film
film according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05106839A
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German (de)
French (fr)
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EP1628279A3 (en
EP1628279B1 (en
Inventor
Christian Kreft
Sören Kahlcke
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Tesa SE
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Tesa SE
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Publication of EP1628279A3 publication Critical patent/EP1628279A3/en
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Publication of EP1628279B1 publication Critical patent/EP1628279B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/267Marking of plastic artifacts, e.g. with laser
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02Forms or constructions
    • G09F3/0291Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
    • G09F3/0292Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time tamper indicating labels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/08Fastening or securing by means not forming part of the material of the label itself
    • G09F3/10Fastening or securing by means not forming part of the material of the label itself by an adhesive layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/41Base layers supports or substrates
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/14Layer or component removable to expose adhesive

Definitions

  • the invention relates to a laser film of an at least single-layer carrier layer of a transparent film, which is coated on one side with a self-adhesive, and the use of the same on packaging or objects to be transported.
  • Labeling and labeling of materials by laser is a widely used process.
  • material is removed from the material to be inscribed during the inscription process. If a thin, differently colored cover layer is removed from a base layer, high-contrast lettering can be achieved.
  • EP 0 645 747 A shows a laser-inscribable multilayer label material which is composed of a first layer, a second layer differing optically from the first layer, the first layer being laser-irradiated in accordance with a desired font or print image to visualize the surface the second layer is removable. Between the layers, a transparent plastic film forming a carrier layer is furthermore arranged.
  • DE 44 21 865 A1 shows a Ein harshlaseretikett of a carrier layer made of plastic, which contains an additive which shows a color change under laser irradiation.
  • the carrier layer is coated on one side with a self-adhesive, which is optionally covered with a release paper or a release film.
  • the carrier layer consists of a lacquer, in particular of a cured lacquer, preferably a radiation-cured lacquer, in particular of an electron beam-cured polyurethane acrylate lacquer.
  • the carrier layer is made of a polybutylene terephthalate.
  • DE 199 09 723 A1 has disclosed a security film which has a carrier layer in which an identification medium is contained. With the help of a non-contact labeling process, the diffusion properties of this identification medium can be specifically selectively and locally changed. If the security film labeled in this way is adhered to a workpiece, the identification medium diffuses toward the substrate surface, where it causes a detectable reaction. In this case, this diffusion or reaction takes place only in those areas of the substrate surface in which the diffusion capability was triggered or not hindered by the inscription process. Thus, the security film allows a clear labeling and identification of the workpiece.
  • the security film is labeled by means of a non-contact method.
  • the labeling of the security film - and thus the change of the diffusion properties of the identification medium - can be done in particular by means of electromagnetic radiation.
  • Particularly advantageous for labeling the security film is the use of a laser, with the help of both a temperature and a light-sensitive labeling can be done (where the term "light” in this Case covers the entire range of the electromagnetic spectrum accessible to the laser).
  • Lasers have the additional advantage of enabling high-contrast labels with any choice of pattern, allowing rapid changes to the labeling pattern and being able to be used reliably in the factory environment.
  • a laser-writable rubber compound is known.
  • a rubber preferably a natural rubber, to which an additive having a color change under laser irradiation is added, is used.
  • the rubber may also be blended with conventional additives such as anti-aging agents, crosslinking agents, light stabilizers, antiozonants, carbon black, zinc oxide, fatty acids, resins, plasticizers or accelerators.
  • Suitable additives for producing the color change are, in particular, color pigments and metal salts, in particular copper hydroxide phosphate or else iriodine. These additives are added to the rubber on the order of 0.1 to 10% by weight, especially 0.5 to 5% by weight. Furthermore, titanium dioxide can additionally be added to the additive.
  • a label is produced in the carrier layer of the adhesive tape or label.
  • the object of the invention is to provide a self-adhesive laser film whose inscription is optimally protected after the erosion and which does not have the disadvantages of the prior art.
  • the carrier layer consists of a PET or PP film. Further preferably, the carrier layer has a thickness of 10 to 200 .mu.m, in particular from 50 to 100 .mu.m.
  • the carrier layer can also be formed by a multilayer laminate of different films, wherein each individual film must be transparent.
  • the laser-sensitive additive is present in the adhesive, which produces a color change under laser irradiation.
  • the adhesive has in addition to the writability of a laser in particular the properties of a pressure-sensitive adhesive.
  • the adhesive has a light hue.
  • the properties of the adhesive are based on the requirements in the applications typical of laser films or of labels produced therefrom.
  • the basis for the adhesive is a rubber, for example natural rubber or a blend of natural and synthetic rubbers.
  • This rubber or rubber blend is added to said absorber pigment, which is responsible for the color change.
  • the rubber may be blended with conventional additives such as fillers, anti-aging agents, crosslinkers, color pigments, zinc oxide or resins.
  • crosslinking by UV radiation, electron beam curing can be carried out by thermal or chemical means.
  • the adhesive layer has a thickness of 15 to 200 ⁇ m, in particular 30 to 100 ⁇ m.
  • the absorber pigments used to produce the color change are, in particular, color pigments or metal salts, in particular copper hydroxide phosphate.
  • This additive is added to the adhesive in the range of 0.1 to 10 wt .-%, in particular 0.5 to 5 wt .-%, based on the total weight of the adhesive.
  • the term laser film comprises an adhesive tape which can be wound into an Archimedean spiral, and laser labels or sections which are cut to length from the adhesive tape depending on the application.
  • the laser labels / sections can also be punched.
  • the advantages of the film or the label with laser-inscribable adhesive are that it is possible to provide adhesive bonds with individually selectable inscriptions, if required, which can be read permanently and with very good contrast.
  • adhesive bonds with individually selectable inscriptions, if required, which can be read permanently and with very good contrast.
  • this structure provides the advantage of protection against loss of information, since the font is not on, but under the top of the carrier compared to labels in the printing process.
  • Laser marking has the further advantage over conventional printing systems such as thermal transfer printing that the flexibility of the labeling (continuous serial numbering, short-term change from plain text to barcode or the like) is significantly greater.
  • a particularly advantageous use of the label according to the invention is in the packaging and printing of packages or objects to be transported for shipping or in the logistics area.
  • the optionally labeled label is applied to the packaging unit manually or by machine.
  • the labeling can be done before or after application.
  • an individual inscription for example addresses, control codes is glued to the packaging unit; a separate gluing process with a barcode or address label is unnecessary.
  • the inscription of the adhesive can be carried out with the aid of Nd-Yag solid-state lasers, in particular at a light wavelength of 1064 nm.
  • electroplating systems or masks can be used.
  • the additive embedded in the adhesive such as preferred copper hydroxide phosphate, absorbs the energy. This creates a strong heat in the immediate vicinity of the irradiated Particles by absorption of the high-energy radiation, so that a carbonization of the adjacent polymer matrix takes place.
  • the adhesive which is preferably brightly colored mainly by admixing titanium dioxide, changes its color in the region of the carbonization that has occurred, to gray to black shades, depending on the amount of energy used. This color change produces high-contrast labels. When labeling the carrier film of the tape remains unchanged and the color change in the adhesive takes place without or with minimal material removal.
  • the laser-writable film can advantageously cover new applications.
  • a preferred use are by the use of tear-resistant film carrier, combined with laser-inscribable adhesive bonds in the packaging area with additional labeling option or other temporary or permanent bonding of all kinds.
  • the previously known solutions for gluing / gluing and labeling of a product provide at least two adhesive applications used side by side.
  • an adhesive tape which ensures the bonding
  • a label with printed data such as addresses, control barcodes, etc.
  • the invention described herein combines these adhesive applications together, that is, the invention describes a film which simultaneously assures bonding as well as provides the ability to make labels thereon.
  • FIG. 1 shows a laser film which consists of a carrier layer 1, here a transparent 40 ⁇ m PET film, to which an adhesive 2 has been applied.
  • the laser film is irradiated at the desired locations with a Nd-YAag laser 3.
  • the jet 3 penetrates through the transparent film 1 and is absorbed by the additive in the adhesive 2, resulting in a carbonization of the immediate environment 4 leads.
  • the carbonized material gives the desired label after completion of the irradiation.
  • FIG. 2 shows a particularly advantageous use of the laser film.
  • the laser film is glued to a substrate 5.
  • the lettering of the film takes place in such a way that the adhesive 2 is carbonized at the point of impact of the laser beam 3 over the entire thickness of the layer.
  • the beam 3 is guided so that the surface of the substrate 5 is also changed / labeled by the laser beam 3.
  • An image 41 of the inscription in the laser film appears in the background 5. Should the laser film be removed from the background 5, this manipulation attempt would be immediately visible because the inscription 41 in the substrate 5 is no longer covered by the laser film.
  • the laser film according to the invention thus also includes the option of being used as a security label.
  • Wt .-% natural rubber 42.40 chalk 10.10 C 5 -fractionated aliphatic hydrocarbon resin 39.40 ZnO 5.10 Titanium dioxide 1.00 copper hydroxide 1.00 Anti-aging agents 1.00 total 100.00
  • the preparation of the adhesive takes place discontinuously in two steps; Preparation of a premix and the final mixture.
  • the total formulation corresponding amount of elastomer (natural rubber), filler, zinc oxide, titanium dioxide, anti-aging agents, copper hydroxide and about 1 ⁇ 4 of the total amount of adhesive resin (C 5 -fractionated aliphatic hydrocarbon resin Piccotac 1100E Eastman) are weighed to the nearest gram for the following steps and kneading ( Internal mixer) of the type Werner & Pfleiderer, which by intermeshing waves with a maximum speed of 50 U / min. is presented submitted.
  • the kneading time is 3 minutes at a kneading temperature of 95 ° C.
  • the premix is taken out of the kneader and transferred with the remaining amount of tackifier resin (3/4 of the total) in a common for rubber adhesives universal kneader.
  • the kneading time of the premix with the adhesive resin takes place over a period of 15 minutes at a kneading temperature of 95 ° C.
  • the adhesive resin is added in portions in time intervals of 4 minutes in the kneading premix.
  • the preparation of the adhesive can also be carried out in continuous production.
  • the required raw materials are compounded directly via dosing according to the recipe in the extruder process.
  • the process offers itself over the planetary roller extruder.
  • the molding of the adhesive takes place to an adhesive film in a 3-roll coating unit.
  • the carrier film is threaded through the coating gap and this adjusted so that Klebmasseetzträge of 15 to 200 microns, preferably from 30 to 100 microns, or the film is pressed after the coating gap at the transfer roller against the molded adhesive and thus transferred.
  • the coated carrier film is wound into rolls, If necessary, a masking paper or a cover film can be laminated to the adhesive.
  • the rolled goods produced in this way can now be subjected to UV radiation or electron beam curing on the adhesive side.
  • the labeling of the adhesive is carried out with a Nd-Yag solid-state laser with Galvanoablenksystem.
  • the parameters can be varied accordingly.

Abstract

A laser film comprises at least one-ply backing layer (1) comprising a transparent sheet, and a self-adhesive mass (2) containing an additive coated on one side of the laser film. The additive changes color under laser irradiation. The laser film is optionally lined with a release paper or a release film.

Description

Die Erfindung betrifft einen Laserfilm aus einer zumindest einschichtigen Trägerschicht aus einer transparenten Folie, die einseitig mit einer Selbstklebemasse beschichtet ist, sowie die Verwendung desselben auf Verpackungen oder zu transportierenden Gegenständen.The invention relates to a laser film of an at least single-layer carrier layer of a transparent film, which is coated on one side with a self-adhesive, and the use of the same on packaging or objects to be transported.

Die Beschriftung und Kennzeichnung von Materialien mittels Laser ist ein weit verbreitetes Verfahren. Hierbei wird während des Beschriftungsvorganges Material von dem zu beschriftenden Material abgetragen. Wird eine dünne, andersfarbige Deckschicht von einer Basisschicht abgetragen, lassen sich kontrastreiche Beschriftungen erzielen.Labeling and labeling of materials by laser is a widely used process. In this case, material is removed from the material to be inscribed during the inscription process. If a thin, differently colored cover layer is removed from a base layer, high-contrast lettering can be achieved.

In der DE 81 30 861 U wird ein derartiges mehrschichtiges Etikett aus einer dünnen und einer dicken selbsttragenden, deckend pigmentierten Lackschicht offenbart. Beide Schichten bestehen aus einem elektronenstrahlgehärteten lösungsmittelfrei aufgetragenen Lack, wobei die Schichtdicken unterschiedlich sind. Die Beschriftung des Etiketts erfolgt dadurch, dass mit Hilfe eines Lasers die obere dünnere Lackschicht weggebrannt wird, so dass die untere dickere Lackschicht sichtbar wird, wobei die untere Schicht bevorzugt eine Kontrastfarbe zur ersteren aufweist.
Bei dieser Beschriftung handelt es sich um eine Art von Gravur, womit Manipulationsmöglichkeiten wie bei traditionellen Bedruckungen mit Farben und Tinten entfallen. Das Etikett ist durch die eingesetzten Rohstoffe und den Herstellungsprozess derart spröde eingestellt, dass eine Entfernung desselben von den Haftuntergründen fast immer nur unter Zerstörung möglich ist.
In DE 81 30 861 U, such a multilayer label of a thin and a thick self-supporting, opaque pigmented lacquer layer is disclosed. Both layers consist of an electron beam-hardened solvent-free applied paint, wherein the layer thicknesses are different. The labeling of the label takes place in that with the aid of a laser, the upper thinner lacquer layer is burned away, so that the lower thicker lacquer layer is visible, the lower layer preferably having a contrasting color to the former.
This lettering is a type of engraving, which eliminates the manipulation possibilities as with traditional printing with inks and inks. The label is set by the raw materials used and the manufacturing process so brittle that removal of the same from the adhesive substrates is almost always possible only with destruction.

In der EP 0 645 747 A wird ein laserbeschriftbares mehrschichtiges Etikettenmaterial gezeigt, das sich aus einer ersten Schicht, einer zweiten, von der ersten Schicht optische differierenden Schicht zusammensetzt, wobei die erste Schicht mittels Laserstrahlung entsprechend einem gewünschten Schrift- oder Druckbild unter Sichtbarmachung der Oberfläche der zweiten Schicht entfernbar ist. Zwischen den Schichten ist weiterhin eine eine Trägerschicht bildende transparente Kunststofffolie angeordnet.EP 0 645 747 A shows a laser-inscribable multilayer label material which is composed of a first layer, a second layer differing optically from the first layer, the first layer being laser-irradiated in accordance with a desired font or print image to visualize the surface the second layer is removable. Between the layers, a transparent plastic film forming a carrier layer is furthermore arranged.

Die DE 44 21 865 A1 zeigt ein Einschichtlaseretikett aus einer Trägerschicht aus Kunststoff, die ein Additiv enthält, das unter Laserbestrahlung einen Farbumschlag zeigt.
Die Trägerschicht ist einseitig mit einer Selbstklebemasse beschichtet, welche gegebenenfalls mit einem Trennpapier oder einer Trennfolie abgedeckt ist.
Die Trägerschicht besteht aus einem Lack, insbesondere aus einem gehärteten Lack, vorzugsweise einem strahlengehärteten Lack, insbesondere aus einem elektronenstrahlengehärteten Polyurethanacrylat-Lack. In einer alternativen Ausführungsform ist die Trägerschicht aus einem Polybutylenterephthalat.
DE 44 21 865 A1 shows a Einschichtlaseretikett of a carrier layer made of plastic, which contains an additive which shows a color change under laser irradiation.
The carrier layer is coated on one side with a self-adhesive, which is optionally covered with a release paper or a release film.
The carrier layer consists of a lacquer, in particular of a cured lacquer, preferably a radiation-cured lacquer, in particular of an electron beam-cured polyurethane acrylate lacquer. In an alternative embodiment, the carrier layer is made of a polybutylene terephthalate.

Mit der DE 199 09 723 A1 ist eine Sicherheitsfolie bekannt geworden, die eine Trägerschicht aufweist, in der ein Identifikationsmedium enthalten ist. Mit Hilfe eines berührungslosen Beschriftungsprozesses können die Diffusionseigenschaften dieses Identifikationsmediums gezielt selektiv und lokal verändert werden. Wird die so beschriftete Sicherheitsfolie auf ein Werkstück aufgeklebt, so diffundiert das Identifikationsmedium zur Substratoberfläche hin und bewirkt dort eine nachweisbare Reaktion. Dabei erfolgt diese Diffusion beziehungsweise Reaktion nur in solchen Bereichen der Substratoberfläche, in denen durch den Beschriftungsvorgang die Diffusionsfähigkeit ausgelöst beziehungsweise nicht behindert wurde. Somit ermöglicht die Sicherheitsfolie eine eindeutige Beschriftung und Identifikation des Werkstücks.DE 199 09 723 A1 has disclosed a security film which has a carrier layer in which an identification medium is contained. With the help of a non-contact labeling process, the diffusion properties of this identification medium can be specifically selectively and locally changed. If the security film labeled in this way is adhered to a workpiece, the identification medium diffuses toward the substrate surface, where it causes a detectable reaction. In this case, this diffusion or reaction takes place only in those areas of the substrate surface in which the diffusion capability was triggered or not hindered by the inscription process. Thus, the security film allows a clear labeling and identification of the workpiece.

Die Sicherheitsfolie wird mittels eines berührungslosen Verfahrens beschriftet. So kann auch im Fabrikumfeld eine schmutzunempfindliche, schnelle, flexibel variierbare Beschriftung erreicht werden. Die Beschriftung der Sicherheitsfolie - und somit die Änderung der Diffusionseigenschaften des Identifikationsmediums - kann insbesondere mit Hilfe elektromagnetischer Strahlung erfolgen. Besonders vorteilhaft zur Beschriftung der Sicherheitsfolie ist der Einsatz eines Lasers, mit Hilfe dessen sowohl eine temperatur- als auch eine lichtsensitive Beschriftung erfolgen kann (wobei der Begriff "Licht" in diesem Fall den gesamten dem Laser zugänglichen Bereich des elektromagnetischen Spektrums umfasst). Laser haben den zusätzlichen Vorteil, kontrastreiche Beschriftungen mit einer beliebigen Wahl des Musters zu ermöglichen, schnelle Änderungen des Beschriftungsmusters zu gestatten und prozesssicher im Fabrikumfeld einsetzbar zu sein.The security film is labeled by means of a non-contact method. Thus, even in the factory environment a dirt-resistant, fast, flexible variable labeling can be achieved. The labeling of the security film - and thus the change of the diffusion properties of the identification medium - can be done in particular by means of electromagnetic radiation. Particularly advantageous for labeling the security film is the use of a laser, with the help of both a temperature and a light-sensitive labeling can be done (where the term "light" in this Case covers the entire range of the electromagnetic spectrum accessible to the laser). Lasers have the additional advantage of enabling high-contrast labels with any choice of pattern, allowing rapid changes to the labeling pattern and being able to be used reliably in the factory environment.

Ein zusätzlicher Sicherheitsaspekt ist in der DE 199 04 823 A1 offenbart. Hier wird ein Verfahren zur Herstellung einer Folie beschrieben, bei dem zunächst eine Stützträgerfolie mittels eines Prägewerkzeuges geprägt wird, wobei das Prägewerkzeug holographische Strukturen aufweist. Anschließend wird eine Folie auf der geprägten Stützträgerfolie erzeugt, so dass sich auf der Folie zumindest ein Hologramm abzeichnet.An additional safety aspect is disclosed in DE 199 04 823 A1. Here, a method for producing a film is described in which initially a support carrier film is embossed by means of an embossing tool, wherein the embossing tool has holographic structures. Subsequently, a film is produced on the embossed support carrier film, so that at least one hologram appears on the film.

Aus der DE 195 31 332 A1 ist eine laserbeschriftbare Gummimischung bekannt. Als Basismaterial für diese Gummimischung wird ein Kautschuk, bevorzugt ein Naturkautschuk verwendet, dem ein Additiv zugesetzt ist, das unter Laserbestrahlung ein Farbumschlag zeigt. Der Kautschuk kann darüber hinaus mit üblichen Zusatzstoffen wie Alterungsschutzmitteln, Vernetzern, Lichtschutzmitteln, Ozonschutzmitteln, Ruß, Zinkoxid, Fettsäuren, Harzen, Weichmachern oder Beschleunigern abgemischt sein.From DE 195 31 332 A1 a laser-writable rubber compound is known. As the base material for this rubber compound, a rubber, preferably a natural rubber, to which an additive having a color change under laser irradiation is added, is used. The rubber may also be blended with conventional additives such as anti-aging agents, crosslinking agents, light stabilizers, antiozonants, carbon black, zinc oxide, fatty acids, resins, plasticizers or accelerators.

Geeignete Additive zur Erzeugung des Farbumschlags sind insbesondere Farbpigmente und Metallsalze, vor allem Kupferhydroxidphosphat oder auch Iriodin. Diese Additive werden dem Kautschuk in einer Größenordnung von 0,1 bis 10 Gew.-%, insbesondere 0,5 bis 5 Gew.-%, zugesetzt. Weiterhin kann zu dem Additiv auch zusätzlich Titandioxid zugemischt werden.Suitable additives for producing the color change are, in particular, color pigments and metal salts, in particular copper hydroxide phosphate or else iriodine. These additives are added to the rubber on the order of 0.1 to 10% by weight, especially 0.5 to 5% by weight. Furthermore, titanium dioxide can additionally be added to the additive.

In allen genannten Möglichkeiten wird in der Trägerschicht des Klebebandes beziehungsweise Etiketts eine Beschriftung erzeugt.In all the above possibilities, a label is produced in the carrier layer of the adhesive tape or label.

Leistungsfähige steuerbare Laser zum Einbrennen von Markierungen wie Schriften, Codierungen und dergleichen sind verbreitet. An das zu beschriftende Material werden unter anderem folgende Anforderungen gestellt:

  • Es soll schnell beschriftbar sein.
  • Es soll ein hohes räumliches Auflösungsvermögen erreicht werden.
  • Es soll in der Anwendung möglichst einfach sein.
  • Die Zersetzungsprodukte sollen nicht korrosiv wirken.
Powerful controllable lasers for baking markings such as fonts, encodings and the like are widespread. Amongst others, the following requirements apply to the material to be labeled:
  • It should be writable quickly.
  • It should be achieved a high spatial resolution.
  • It should be as simple as possible in the application.
  • The decomposition products should not be corrosive.

Darüber hinaus werden für besondere Fälle zusätzliche Eigenschaftsmerkmale gefordert:

  • Hohe Temperaturbeständigkeit soll gegeben sein, beispielsweise bis über 200 °C.
  • Gute Beständigkeit gegen Bewitterung, Wasser und Lösungsmittel ist erwünscht.
In addition, special features are required for special cases:
  • High temperature resistance should be given, for example to over 200 ° C.
  • Good resistance to weathering, water and solvents is desired.

Bekannte, hierfür eingesetzte Materialien, wie bedrucktes Papier, eloxiertes Aluminium, lackiertes Blech oder PVC-Folien, werden nicht allen diesen Anforderungen gerecht.Known materials used for this, such as printed paper, anodised aluminum, painted sheet metal or PVC films, do not meet all of these requirements.

Aufgabe der Erfindung ist es, einen selbstklebenden Laserfilm zur Verfügung zu stellen, dessen Beschriftung nach der Belaserung optimal geschützt ist und der die Nachteile des Standes der Technik nicht aufweist.The object of the invention is to provide a self-adhesive laser film whose inscription is optimally protected after the erosion and which does not have the disadvantages of the prior art.

Gelöst wird diese Aufgabe durch einen Laserfilm, wie er gemäß Hauptanspruch beschrieben ist. Gegenstand der Unteransprüche sind besonders vorteilhafte Ausführungsformen des Erfindungsgegenstands sowie besonders vorteilhafte Verwendungen des erfindungsgemäßen Laserfilms.This object is achieved by a laser film, as described in the main claim. The subject of the dependent claims are particularly advantageous embodiments of the subject invention and particularly advantageous uses of the laser film according to the invention.

Dementsprechend betrifft die Erfindung einen Laserfilm aus einer

  • zumindest einschichtigen Trägerschicht aus einer transparenten Folie, die
  • einseitig mit einer Selbstklebemasse beschichtet ist, die
  • ein Additiv enthält, das unter Laserbestrahlung einen Farbumschlag zeigt, und die
  • gegebenenfalls mit einem Trennpapier oder einer Trennfolie abgedeckt ist.
Accordingly, the invention relates to a laser film of a
  • at least one-layer carrier layer of a transparent film, the
  • coated on one side with a self-adhesive, the
  • contains an additive which shows a color change under laser irradiation, and the
  • optionally covered with a release paper or release liner.

In einer ersten vorteilhaften Ausführungsform besteht die Trägerschicht aus einer PET-oder PP-Folie.
Weiter vorzugsweise weist die Trägerschicht eine Dicke von 10 bis 200 µm, insbesondere von 50 bis 100 µm auf.
In a first advantageous embodiment, the carrier layer consists of a PET or PP film.
Further preferably, the carrier layer has a thickness of 10 to 200 .mu.m, in particular from 50 to 100 .mu.m.

Die Trägerschicht kann auch von einen mehrschichtigen Laminat unterschiedlicher Folien gebildet werden, wobei jede einzelne Folie transparent sein muss.The carrier layer can also be formed by a multilayer laminate of different films, wherein each individual film must be transparent.

Erfindungsgemäß ist in der Klebemasse das lasersensitive Additiv vorhanden, das unter Laserbestrahlung einen Farbumschlag erzeugt. Die Klebemasse weist neben der Beschriftbarkeit durch einen Laser insbesondere die Eigenschaften einer druckempfindlichen Klebmasse auf.
Vorzugsweise hat die Klebemasse einen hellen Farbton.
According to the invention, the laser-sensitive additive is present in the adhesive, which produces a color change under laser irradiation. The adhesive has in addition to the writability of a laser in particular the properties of a pressure-sensitive adhesive.
Preferably, the adhesive has a light hue.

Die Eigenschaften der Klebemasse orientieren sich dabei an den Anforderungen in den für Laserfilmen beziehungsweise daraus gefertigten Etiketten typischen Anwendungen.The properties of the adhesive are based on the requirements in the applications typical of laser films or of labels produced therefrom.

Als Basis für die Klebemasse wird ein Kautschuk, zum Beispiel Naturkautschuk oder ein Blend aus Natur- mit Synthesekautschuken eingesetzt. Diesem Kautschuk beziehungsweise Kautschukblend ist besagtes Absorberpigment zugesetzt, das für den Farbumschlag verantwortlich ist. Darüber hinaus kann der Kautschuk mit üblichen Zusatzstoffen wie Füllstoffen, Alterungsschutzmitteln, Vernetzern, Farbpigmenten, Zinkoxid oder Harzen abgemischt sein.
Für die Einstellung weiterer Eigenschaften der Klebemasse kann eine Vernetzung durch UV-Strahlung, Elektronenstrahlhärtung, auf thermischen oder chemischen Wege durchgeführt werden.
The basis for the adhesive is a rubber, for example natural rubber or a blend of natural and synthetic rubbers. This rubber or rubber blend is added to said absorber pigment, which is responsible for the color change. In addition, the rubber may be blended with conventional additives such as fillers, anti-aging agents, crosslinkers, color pigments, zinc oxide or resins.
For setting further properties of the adhesive, crosslinking by UV radiation, electron beam curing, can be carried out by thermal or chemical means.

Die Klebmasseschicht weist in einer weiteren bevorzugten Ausführungsform eine Dicke von 15 bis 200 µm, insbesondere 30 bis 100 µm auf.In a further preferred embodiment, the adhesive layer has a thickness of 15 to 200 μm, in particular 30 to 100 μm.

Die eingesetzten Absorberpigmente zur Erzeugung des Farbumschlages sind insbesondere Farbpigmente oder Metallsalze, vor allem Kupferhydroxidphosphat.
Dieses Additiv wird der Klebemasse in einer Größenordnung von 0,1 bis 10 Gew.-%, insbesondere 0,5 bis 5 Gew.-% zugesetzt, und zwar bezogen auf das Gesamt-Gewicht der Klebemasse.
The absorber pigments used to produce the color change are, in particular, color pigments or metal salts, in particular copper hydroxide phosphate.
This additive is added to the adhesive in the range of 0.1 to 10 wt .-%, in particular 0.5 to 5 wt .-%, based on the total weight of the adhesive.

Erfindungsgemäß umfasst der Begriff Laserfilm ein Klebeband, das zu einer archimedischen Spirale aufgewickelt sein kann, sowie Laseretiketten oder Abschnitte, die von dem Klebeband je nach Einsatzfall abgelängt werden. Die Laseretiketten/Abschnitte können auch gestanzt werden.According to the invention, the term laser film comprises an adhesive tape which can be wound into an Archimedean spiral, and laser labels or sections which are cut to length from the adhesive tape depending on the application. The laser labels / sections can also be punched.

Die Vorteile des Films oder des Etiketts mit laserbeschriftbarer Klebemasse sind darin zu sehen, dass es möglich ist, Verklebungen bei Bedarf mit individuell wählbaren Beschriftungen zu versehen, welche dauerhaft und mit sehr gutem Kontrast lesbar sind. Im Vergleich zu trägerseitig bedruckten Klebebändern ergibt sich der Vorteil einer mechanisch geschützten Beschriftung, das heißt, durch diesen Aufbau ergibt sich der Vorteil des Schutzes vor Informationsverlust, da die Schrift im Vergleich zu Beschriftungen im Bedruckungsverfahren nicht auf, sondern unter der Trägeroberseite liegt.The advantages of the film or the label with laser-inscribable adhesive are that it is possible to provide adhesive bonds with individually selectable inscriptions, if required, which can be read permanently and with very good contrast. In comparison to carrier-side printed adhesive tapes there is the advantage of a mechanically protected lettering, that is, this structure provides the advantage of protection against loss of information, since the font is not on, but under the top of the carrier compared to labels in the printing process.

Die Laserbeschriftung hat im Vergleich zu gängigen Drucksystemen wie zum Beispiel dem Thermotransferdruck den weiteren Vorteil, dass die Flexibilität der Beschriftung (fortlaufende Seriennummerierung, kurzfristiger Wechsel von Klarschrift zu Barcode oder ähnlichem) deutlich größer ausfällt.Laser marking has the further advantage over conventional printing systems such as thermal transfer printing that the flexibility of the labeling (continuous serial numbering, short-term change from plain text to barcode or the like) is significantly greater.

Eine besonders vorteilhafte Verwendung des erfindungsgemäßen Etiketts bietet sich in der Verpackung und Bedruckung von Paketen beziehungsweise zu transportierenden Gegenständen für den Versand oder im logistischen Bereich an.A particularly advantageous use of the label according to the invention is in the packaging and printing of packages or objects to be transported for shipping or in the logistics area.

Im Verpackungsbereich von Waren wird das gegebenenfalls beschriftete Etikett auf die Verpackungseinheit manuell oder maschinell appliziert. Die Beschriftung kann vor oder nach Applikation erfolgen. Bei der vorteilhaften Ausführung eines beschriftbaren Etiketts wird eine individuelle Beschriftung, zum Beispiel Adressen, Steuerungscodes auf der Verpackungseinheit verklebt, es erübrigt sich ein separater Verklebungsvorgang mit einem Barcode- oder Adresslabel.In the packaging area of goods, the optionally labeled label is applied to the packaging unit manually or by machine. The labeling can be done before or after application. In the case of the advantageous embodiment of a label which can be labeled, an individual inscription, for example addresses, control codes is glued to the packaging unit; a separate gluing process with a barcode or address label is unnecessary.

Die Beschriftung der Klebemasse kann mit Hilfe von Nd-Yag-Festkörperlasern, insbesondere bei einer Licht-Wellenlänge von 1064 nm erfolgen. Um eine gewünschte Beschriftung in der Klebemasse zu erzeugen, können Galvanoablenksysteme oder auch Masken eingesetzt werden.The inscription of the adhesive can be carried out with the aid of Nd-Yag solid-state lasers, in particular at a light wavelength of 1064 nm. In order to produce a desired inscription in the adhesive, electroplating systems or masks can be used.

Im Auftreffpunkt des Lasers auf die Materialoberfläche absorbiert das in die Klebemasse eingebettete Additiv wie bevorzugtes Kupferhydroxidphosphat die Energie. Hierdurch entsteht eine starke Wärmeentwicklung in der unmittelbaren Umgebung des bestrahlten Partikels durch Absorption der energiereichen Strahlung, so dass eine Karbonisierung der benachbarten Polymermatrix stattfindet. Die bevorzugt hauptsächlich durch das Zumischen von Titandioxid hell gefärbte Klebemasse verändert ihre Farbe im Bereich der aufgetretenen Karbonisierung abhängig von der eingesetzten Energiemenge zu Grau- bis Schwarztönen. Dieser Farbwechsel erzeugt kontrastreiche Beschriftungen.
Bei der Beschriftung bleibt die Trägerfolie des Bandes unverändert und der Farbumschlag in der Klebemasse erfolgt ohne beziehungsweise mit minimalem Materialabtrag.
At the point of impact of the laser on the surface of the material, the additive embedded in the adhesive, such as preferred copper hydroxide phosphate, absorbs the energy. This creates a strong heat in the immediate vicinity of the irradiated Particles by absorption of the high-energy radiation, so that a carbonization of the adjacent polymer matrix takes place. The adhesive, which is preferably brightly colored mainly by admixing titanium dioxide, changes its color in the region of the carbonization that has occurred, to gray to black shades, depending on the amount of energy used. This color change produces high-contrast labels.
When labeling the carrier film of the tape remains unchanged and the color change in the adhesive takes place without or with minimal material removal.

Durch den laserbeschriftbaren Film können vorteilhaft neue Anwendungen abgedeckt werden.
In einer bevorzugten Verwendung sind durch den Einsatz reißfester Folienträger, kombiniert mit laserbeschriftbarer Klebemasse Verklebungen im Verpackungsbereich mit zusätzlicher Beschriftungsmöglichkeit oder sonstige temporäre beziehungsweise dauerhafte Verklebungen aller Art.
Die bisher bekannten Lösungen zum Kleben/Zukleben und Beschriften eines Produktes sehen mindestens zwei nebeneinander verwendete Klebeanwendungen vor. Zum einen ein Klebeband, das die Verklebung sicherstellt, zum anderen ein Etikett mit aufgedruckten Daten wie zum Beispiel Adressen, Steuerungsbarcodes etc.
The laser-writable film can advantageously cover new applications.
In a preferred use are by the use of tear-resistant film carrier, combined with laser-inscribable adhesive bonds in the packaging area with additional labeling option or other temporary or permanent bonding of all kinds.
The previously known solutions for gluing / gluing and labeling of a product provide at least two adhesive applications used side by side. On the one hand an adhesive tape, which ensures the bonding, on the other hand, a label with printed data such as addresses, control barcodes, etc.

Die hier beschriebene Erfindung kombiniert diese Klebeanwendungen miteinander, das heißt, die Erfindung beschreibt einen Film, der gleichzeitig die Verklebung sicherstellt sowie die Möglichkeit bietet, Beschriftungen daran vorzunehmen.The invention described herein combines these adhesive applications together, that is, the invention describes a film which simultaneously assures bonding as well as provides the ability to make labels thereon.

Im Folgenden soll die Erfindung anhand eines Beispiels sowie zweier Figuren näher erläutert werden, ohne mit diesen die Erfindung in irgendeiner Weise beschränken zu wollen.In the following, the invention will be explained in more detail by means of an example and two figures, without wishing to limit the invention in any way.

Die Figur 1 zeigt einen Laserfilm, der aus einer Trägerschicht 1, hier einer transparenten 40 µm-PET-Folie, besteht, auf die eine Klebemasse 2 aufgebracht ist.
Der Laserfilm wird an den gewünschten Stellen mit einem Nd-YAag-Laser 3 bestrahlt. Der Strahl 3 durchdringt durch die transparente Folie 1 und wird von dem Additiv in der Klebemasse 2 absorbiert, was zu einer Karbonisierung der unmittelbaren Umgebung 4 führt. Das karbonisierte Material ergibt nach Abschluss der Bestrahlung die gewünschte Beschriftung.
FIG. 1 shows a laser film which consists of a carrier layer 1, here a transparent 40 μm PET film, to which an adhesive 2 has been applied.
The laser film is irradiated at the desired locations with a Nd-YAag laser 3. The jet 3 penetrates through the transparent film 1 and is absorbed by the additive in the adhesive 2, resulting in a carbonization of the immediate environment 4 leads. The carbonized material gives the desired label after completion of the irradiation.

In der Figur 2 ist eine besonders vorteilhafte Verwendung des Laserfilms dargestellt. Der Laserfilm ist auf einem Untergrund 5 verklebt. Die Beschriftung des Films erfolgt derart, dass die Klebemasse 2 im Auftreffpunkt des Laserstrahls 3 über die gesamte Dicke der Schicht karbonisiert wird. Weiterhin wird der Strahl 3 so geführt, dass die Oberfläche des Untergrunds 5 ebenfalls vom Laserstrahl 3 verändert/beschriftet wird. Im Untergrund 5 erscheint ein Abbild 41 der Beschriftung im Laserfilm.
Sollte der Laserfilm vom Untergrund 5 entfernt werden, würde dieser Manipulationsversuch sofort sichtbar sein, weil die Beschriftung 41 im Untergrund 5 nicht mehr vom Laserfilm abgedeckt ist.
Der erfindungsgemäße Laserfilm beinhaltet somit auch die Option, als Sicherheitsetikett eingesetzt zu werden.
FIG. 2 shows a particularly advantageous use of the laser film. The laser film is glued to a substrate 5. The lettering of the film takes place in such a way that the adhesive 2 is carbonized at the point of impact of the laser beam 3 over the entire thickness of the layer. Furthermore, the beam 3 is guided so that the surface of the substrate 5 is also changed / labeled by the laser beam 3. An image 41 of the inscription in the laser film appears in the background 5.
Should the laser film be removed from the background 5, this manipulation attempt would be immediately visible because the inscription 41 in the substrate 5 is no longer covered by the laser film.
The laser film according to the invention thus also includes the option of being used as a security label.

Beispielexample Zusammensetzung der laserbeschriftbaren KlebemasseComposition of the laser-writable adhesive

Gew.-%Wt .-% Naturkautschuknatural rubber 42,4042.40 Kreidechalk 10,1010.10 C5-fraktioniertes aliphatisches KohlenwasserstoffharzC 5 -fractionated aliphatic hydrocarbon resin 39,4039.40 ZnOZnO 5,105.10 TitandioxidTitanium dioxide 1,001.00 Kupferhydroxidphosphatcopper hydroxide 1,001.00 AlterungsschutzmittelAnti-aging agents 1,001.00 Gesamttotal 100,00100.00

Die Herstellung der Klebemasse erfolgt diskontinuierlich in zwei Schritten; Erstellung einer Vormischung und der Endmischung.The preparation of the adhesive takes place discontinuously in two steps; Preparation of a premix and the final mixture.

Vormischungpremix

Die der Gesamtrezeptur entsprechende Menge Elastomer (Naturkautschuk), Füllstoff, Zinkoxid, Titandioxid, Alterungsschutzmittel, Kupferhydroxidphosphat sowie ca. ¼ der Gesamtmenge Klebharz (C5-fraktioniertes aliphatisches Kohlenwasserstoffharz Piccotac 1100E der Firma Eastman) werden grammgenau für die folgenden Arbeitsschritte abgewogen und im Kneter (Innenmischer) vom Typ Werner & Pfleiderer, der durch ineinander greifende Wellen mit einer maximalen Geschwindigkeit von 50 U/min. gekennzeichnet ist, vorgelegt.
Die Knetzeit beträgt 3 Minuten bei einer Knettemperatur von 95 °C.
The total formulation corresponding amount of elastomer (natural rubber), filler, zinc oxide, titanium dioxide, anti-aging agents, copper hydroxide and about ¼ of the total amount of adhesive resin (C 5 -fractionated aliphatic hydrocarbon resin Piccotac 1100E Eastman) are weighed to the nearest gram for the following steps and kneading ( Internal mixer) of the type Werner & Pfleiderer, which by intermeshing waves with a maximum speed of 50 U / min. is presented submitted.
The kneading time is 3 minutes at a kneading temperature of 95 ° C.

Endmischungfinal mix

Anschließend wird die Vormischung aus dem Kneter genommen und mit der restlichen Menge Klebharz (3/4 der Gesamtmenge) in einen für Kautschukklebemassen gängigen Universalkneter überführt.
Die Knetdauer der Vormischung mit dem Klebharz erfolgt über einen Zeitraum von 15 Minuten bei einer Knettemperatur von 95 °C. Hierbei wird das Klebharz portionsweise in Zeitetappen von 4 Minuten in die knetende Vormischung zugegeben.
Subsequently, the premix is taken out of the kneader and transferred with the remaining amount of tackifier resin (3/4 of the total) in a common for rubber adhesives universal kneader.
The kneading time of the premix with the adhesive resin takes place over a period of 15 minutes at a kneading temperature of 95 ° C. In this case, the adhesive resin is added in portions in time intervals of 4 minutes in the kneading premix.

Die Herstellung der Klebemasse kann auch in kontinuierlicher Herstellung erfolgen. Hierbei werden die benötigten Rohstoffe direkt über Dosiereinrichtungen entsprechend der Rezeptur im Extruderverfahren compoundiert. Es bietet sich hierbei das Verfahren über den Planetwalzenextruder an.The preparation of the adhesive can also be carried out in continuous production. Here, the required raw materials are compounded directly via dosing according to the recipe in the extruder process. In this case, the process offers itself over the planetary roller extruder.

Daraufhin erfolgt die Ausformung der Klebmasse zu einem Klebefilm in einem 3-Walzen Beschichtungsaggregat. Herbei wird entweder die Trägerfolie durch den Beschichtungsspalt eingefädelt und dieser so eingestellt, dass sich Klebmasseaufträge von 15 bis 200 µm, vorzugsweise von 30 bis 100 µm ergeben, oder die Folie wird nach dem Beschichtungsspalt an der Übergabewalze gegen die ausgeformte Klebemasse gepresst und somit übergeben. In beiden Fällen wird die beschichtete Trägerfolie zu Rollenware aufgewickelt, bei Bedarf kann ein Abdeckpapier oder eine Abdeckfolie zur Klebemasse zukaschiert werden.Then, the molding of the adhesive takes place to an adhesive film in a 3-roll coating unit. Herbei either the carrier film is threaded through the coating gap and this adjusted so that Klebmasseaufträge of 15 to 200 microns, preferably from 30 to 100 microns, or the film is pressed after the coating gap at the transfer roller against the molded adhesive and thus transferred. In both cases, the coated carrier film is wound into rolls, If necessary, a masking paper or a cover film can be laminated to the adhesive.

Die so hergestellte Rollenware kann nun bei Bedarf klebmasseseitig durch UV-Strahlung oder Elektronenstrahlhärtung beaufschlagt werden.If required, the rolled goods produced in this way can now be subjected to UV radiation or electron beam curing on the adhesive side.

Beschriftunglabeling

Die Beschriftung der Klebemasse erfolgt mit einem Nd-Yag-Festkörperlaser mit Galvanoablenksystem.The labeling of the adhesive is carried out with a Nd-Yag solid-state laser with Galvanoablenksystem.

Abhängig vom eingesetzten Laser und dem gewünschten Beschriftungsgrad können die Parameter entsprechend variiert werden.Depending on the laser used and the desired degree of labeling, the parameters can be varied accordingly.

Claims (8)

Laserfilm aus einer a) zumindest einschichtigen Trägerschicht aus einer transparenten Folie, die b) einseitig mit einer Selbstklebemasse beschichtet ist, die c) ein Additiv enthält, das unter Laserbestrahlung einen Farbumschlag zeigt, und die d) gegebenenfalls mit einem Trennpapier oder einer Trennfolie abgedeckt ist. Laser film from a a) at least one-layer carrier layer of a transparent film, the b) is coated on one side with a self-adhesive, the c) contains an additive which shows a color change under laser irradiation, and the d) is optionally covered with a release paper or a release film. Laserfilm nach Anspruch 1, dadurch gekennzeichnet, dass die Trägerschicht aus einer PET- oder PP-Folie besteht.Laser film according to claim 1, characterized in that the carrier layer consists of a PET or PP film. Laserfilm nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Additiv ein Farbpigment oder ein Metallsalz ist, vor allem Kupferhydroxidphosphat.Laser film according to claim 1 or 2, characterized in that the additive is a color pigment or a metal salt, especially copper hydroxide phosphate. Laserfilm nach zumindest einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Additiv in Mengen von 0,1 bis 10 Gew.-%, insbesondere von 0,5 bis 5 Gew.-% bezogen auf das Gesamt-Gewicht der Klebemasse eingesetzt wird.Laser film according to at least one of claims 1 to 3, characterized in that the additive is used in amounts of 0.1 to 10 wt .-%, in particular from 0.5 to 5 wt .-% based on the total weight of the adhesive , Laserfilm nach zumindest einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass neben dem Additiv zusätzlich Titandioxid in der Klebemasse vorhanden ist.Laser film according to at least one of the preceding claims, characterized in that in addition to the additive titanium dioxide is additionally present in the adhesive. Laserfilm nach zumindest einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Trägerschicht eine Dicke von 10 bis 200 µm, insbesondere von 50 bis 100 µm aufweist.Laser film according to at least one of the preceding claims, characterized in that the carrier layer has a thickness of 10 to 200 .mu.m, in particular from 50 to 100 microns. Laserfilm nach zumindest einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass Klebmasseschicht eine Dicke von 15 bis 200 µm, insbesondere 30 bis 100 µm aufweist.Laser film according to at least one of the preceding claims, characterized in that the adhesive layer has a thickness of 15 to 200 .mu.m, in particular 30 to 100 microns. Verwendung eines Laserfilms nach zumindest einem der vorherigen Ansprüche in der Verpackung und Bedruckung von Paketen beziehungsweise zu transportierenden Gegenständen für den Versand oder im logistischen Bereich.Use of a laser film according to at least one of the preceding claims in the packaging and printing of packages or objects to be transported for shipping or in the logistics sector.
EP05106839A 2004-08-09 2005-07-26 Laserfilm Expired - Fee Related EP1628279B1 (en)

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DE102004038774A1 (en) 2006-02-23
US20060029760A1 (en) 2006-02-09
EP1628279A3 (en) 2006-09-27
ES2314575T3 (en) 2009-03-16
EP1628279B1 (en) 2008-10-29
DE502005005785D1 (en) 2008-12-11

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