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EP0650153A2 - Laser writable multi layer sheet - Google Patents

Laser writable multi layer sheet Download PDF

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Publication number
EP0650153A2
EP0650153A2 EP94250235A EP94250235A EP0650153A2 EP 0650153 A2 EP0650153 A2 EP 0650153A2 EP 94250235 A EP94250235 A EP 94250235A EP 94250235 A EP94250235 A EP 94250235A EP 0650153 A2 EP0650153 A2 EP 0650153A2
Authority
EP
European Patent Office
Prior art keywords
layer
laser beam
multilayer film
film according
layer sheet
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Withdrawn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
EP94250235A
Other languages
German (de)
French (fr)
Other versions
EP0650153A3 (en
Inventor
Günter Bartsch
Hans-Peter Böhm
Matthias Museler
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.)
M+B Lasertechnik GmbH
Original Assignee
M+B Lasertechnik GmbH
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 M+B Lasertechnik GmbH filed Critical M+B Lasertechnik GmbH
Publication of EP0650153A2 publication Critical patent/EP0650153A2/en
Publication of EP0650153A3 publication Critical patent/EP0650153A3/en
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • 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
    • G09F2003/0202—Forms or constructions printed before use

Definitions

  • the invention relates to a multilayer film, which enables a colored design of characters and symbols by means of a laser beam. Films labeled in this way are preferably used as labels.
  • DE 40 27 192 describes a method for producing vulcanizable, machine-readable rubber labels.
  • Laser-defined labels are burned into these rubber labels.
  • a laser beam-resistant film material is coated with a rubber layer, and this layer is removed by laser beam in accordance with the intended typeface down to the film material.
  • burnt-out spaces are filled with a different colored rubber compound, pressed and vulcanized.
  • the object of the invention is to provide a multilayer film which can be written on by means of a laser beam, which has a simple structure and allows the design of a label with colored letters and symbols.
  • this object is achieved by a multilayer film which can be inscribed with a laser beam, one of which is under a top layer consisting of an aluminum substrate, which is thermally locally degradable by means of a laser beam, has a second layer of any coloration which does not absorb the laser beam used.
  • the multilayer film described in the exemplary embodiment has a 6-layer structure.
  • the top of the multilayer film is formed from a cover layer 1, which consists of an aluminum substrate.
  • a color layer 3 made of acrylic is applied to the lower side of the cover layer 1 by means of an adhesive 2.
  • the intended use of the multilayer film according to the invention as adhesive labels results in the need for an adhesive layer 5 on the back of the color layer 3, which is applied by means of a connecting layer 4.
  • the programmed characters and / or symbols are applied to the top layer 1. Local thermal degradation of the irradiated areas of the top layer 1 takes place, i.e. they evaporate and the underlying color layer 3 is exposed.
  • the multilayer film according to the invention is guaranteed by the Choice of the top layer 1 made of aluminum and the underlying color layer 3 of any color a high-contrast and easily recognizable image of the information generated on the label.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

The invention relates to a multi-layer sheet (film) which permits a coloured design of characters and pictorial markings by means of a laser beam. Sheets which have been written on in this way are preferably used as labels. The object of the invention is to create a multi-layer sheet which can be written on by means of a laser beam, has a simple structure and permits a label to be designed using coloured characters and pictorial markings. The invention achieves this object by means of a multi-layer sheet which can be written on by a laser beam and in which there is located beneath a cover layer (1), which consists of an aluminium substrate and which can be thermally and locally removed by means of a laser beam, a second layer which may have any colour and which does not absorb the laser beam used. <IMAGE>

Description

Die Erfindung betrifft eine Mehrschichtfolie, die eine farbige Gestaltung von Schrift- und Bildzeichen mittels Laserstrahl ermöglicht. Derartig beschriftete Folien kommen vorzugsweise als Etiketten zum Einsatz.The invention relates to a multilayer film, which enables a colored design of characters and symbols by means of a laser beam. Films labeled in this way are preferably used as labels.

Gemäß dem Stand der Technik sind eine Vielzahl von mehrschichtigen Aufzeichnungsträgern und entsprechende Verfahren zum Beschriften derartiger Aufzeichnungsträger bekannt.According to the prior art, a multiplicity of multi-layer recording media and corresponding methods for labeling such recording media are known.

In DE 40 27 192 ist ein Verfahren zur Herstellung von aufvulkanisierbaren, maschinenlesbaren Gummietiketten beschrieben. In diese Gummietiketten werden mittels Laser definierte Kennzeichnungen eingebrannt. Dazu wird ein laserstrahl-resistentes Folienmaterial mit einer Gummischicht beschichtet, und diese Schicht wird mittels Laserstrahl entsprechend dem beabsichtigten Schriftbild bis zum Folienmaterial abgetragen. Diese freigebrannten Zwischenräume werden mit einer andersfarbigen Gummimasse ausgefüllt, verpreßt und vulkanisiert.DE 40 27 192 describes a method for producing vulcanizable, machine-readable rubber labels. Laser-defined labels are burned into these rubber labels. For this purpose, a laser beam-resistant film material is coated with a rubber layer, and this layer is removed by laser beam in accordance with the intended typeface down to the film material. These burnt-out spaces are filled with a different colored rubber compound, pressed and vulcanized.

Der Nachteil dieses Verfahrens besteht darin, daß zur Herstellung des mehrfarbigen Gummietiketts mehrere aufwendige Verfahrensschritte notwendig sind. Darüber hinaus verteuert das als Hilfsmaterial eingesetzte laserstrahl-resistente Folienmaterial die Gummietiketten, da es lediglich die Aufgabe hat, während der Herstellung des Gummietiketts die Gummischichten zu stützen.The disadvantage of this method is that several complex process steps are necessary to produce the multi-colored rubber label. In addition, the laser beam-resistant film material used as an auxiliary material makes the rubber labels more expensive, since it only has the task of supporting the rubber layers during the production of the rubber label.

Aufgabe der Erfindung ist es, eine mittels Laserstrahl beschriftbare Mehrschichtfolie zu schaffen, die einen einfachen Aufbau besitzt und die Gestaltung eines Etiketts mit farbigen Schrift- und Bildzeichen gestattet.The object of the invention is to provide a multilayer film which can be written on by means of a laser beam, which has a simple structure and allows the design of a label with colored letters and symbols.

Erfindungsgemäß wird diese Aufgabe durch eine mit einem Laserstrahl beschriftbare Mehrschichtfolie gelöst, bei der eine unter einer mittels Laserstrahl thermisch lokal abbaubaren, aus einem Aluminium-Substrat bestehenden Deckschicht eine zweite, den verwendeten Laserstrahl nicht absorbierende Schicht beliebiger Einfärbung vorhanden ist.According to the invention, this object is achieved by a multilayer film which can be inscribed with a laser beam, one of which is under a top layer consisting of an aluminum substrate, which is thermally locally degradable by means of a laser beam, has a second layer of any coloration which does not absorb the laser beam used.

Die Erfindung soll anhand eines Ausführungsbeispiels näher erläutert werden. Die dazugehörige Zeichnung zeigt in

  • Fig. 1 den schematischen Aufbau einer Mehrschichtfolie vor dem Beschriften mittels Laserstrahl,
  • Fig. 2 den schematischen Aufbau der Mehrschichtfolie nach dem Beschriften mittels Laserstrahl.
The invention will be explained in more detail using an exemplary embodiment. The accompanying drawing shows in
  • 1 shows the schematic structure of a multilayer film prior to being inscribed using a laser beam,
  • Fig. 2 shows the schematic structure of the multilayer film after labeling by means of a laser beam.

Die im Ausführungsbeispiel beschriebene Mehrschichtfolie weist einen 6-schichtigen Aufbau auf. Die Oberseite der Mehrschichtfolie wird aus einer Deckschicht 1 gebildet, die aus einem Aluminium-Substrat besteht. An der unteren Seite der Deckschicht 1 wird mittels eines Klebers 2 eine Farbschicht 3 aus Acryl aufgebracht. Aus der beabsichtigten Anwendung der erfindungsgemäßen Mehrschichtfolie als aufklebbare Etiketten ergibt sich die Notwendigkeit einer Klebeschicht 5 auf der Rückseite der Farbschicht 3, die durch eine Verbindungsschicht 4 aufgebracht wird. Eine Trägerschicht 6, die auf die Klebeschicht 5 aufgelegt ist, bildet eine schützende Abdeckung, die bei Gebrauch des Etiketts entfernt wird. Damit ist das Etikett selbstklebend und problemlos auf dem Beschriftungsträger aufzukleben.The multilayer film described in the exemplary embodiment has a 6-layer structure. The top of the multilayer film is formed from a cover layer 1, which consists of an aluminum substrate. A color layer 3 made of acrylic is applied to the lower side of the cover layer 1 by means of an adhesive 2. The intended use of the multilayer film according to the invention as adhesive labels results in the need for an adhesive layer 5 on the back of the color layer 3, which is applied by means of a connecting layer 4. A carrier layer 6, which is placed on the adhesive layer 5, forms a protective cover which is removed when the label is used. This makes the label self-adhesive and easy to stick on the label holder.

Beim Beschriften der Mehrschichtfolie mit dem Laserstrahl mit einer bevorzugten Wellenlänge von 1,06 µm werden in die Deckschicht 1 die programmierten Schrift- und/oder Bildzeichen aufgetragen. Dabei erfolgt ein lokaler thermischer Abbau der bestrahlten Bereiche der Deckschicht 1, d.h. sie verdampfen und die darunterliegende Farbschicht 3 wird freigelegt.When the multilayer film is inscribed with the laser beam with a preferred wavelength of 1.06 μm, the programmed characters and / or symbols are applied to the top layer 1. Local thermal degradation of the irradiated areas of the top layer 1 takes place, i.e. they evaporate and the underlying color layer 3 is exposed.

Die erfindungsgemäße Mehrschichtfolie gewährleistet durch die Wahl der Deckschicht 1 aus Aluminium und der darunterliegenden Farbschicht 3 einer beliebigen Farbe ein kontrastreiches und gut erkennbares Bild der auf dem Etikett erzeugten Informationen.The multilayer film according to the invention is guaranteed by the Choice of the top layer 1 made of aluminum and the underlying color layer 3 of any color a high-contrast and easily recognizable image of the information generated on the label.

Es ist selbstverständlich, daß verschiedene andere Modifikationen, die sich insbesondere auf die Farbschicht und die darunterliegenden Klebe- und Trägerschichten beziehen, für jene, die mit der Technik vertraut sind, offensichtlich sind und von diesen leicht vorgenommen werden können, ohne von dem Geltungsbereich dieser Erfindung abzuweichen. Dementsprechend ist nicht beabsichtigt, daß der Geltungsbereich der hier angefügten Ansprüche auf die Beschreibung beschränkt ist, wie sie im Vorstehenden dargelegt worden ist, sondern vielmehr, daß die Ansprüche so auszulegen sind, daß sie alle Merkmale von patentfähiger Neuartigkeit umfaßt, die in der vorliegenden Erfindung liegen, einschließlich aller Merkmale, die als Äquivalent davon durch jene behandelt werden, die mit der Technik vertraut sind, zu der diese Erfindung gehört.It goes without saying that various other modifications, particularly relating to the color layer and the underlying adhesive and backing layers, are obvious to those familiar with the art and can be easily made by them without departing from the scope of this invention to deviate. Accordingly, it is not intended that the scope of the claims appended hereto be limited to the description as set forth above, but rather that the claims should be construed to encompass all features of patentable novelty that are present in the present invention including all features that are treated as equivalent thereof by those familiar with the art to which this invention belongs.

Claims (9)

Mit einem Laserstrahl beschriftbare Mehrschichtfolie, dadurch gekennzeichnet, daß unter einer mittels Laserstrahl thermisch lokal abbaubaren, aus einem Aluminium-Substrat bestehenden Deckschicht eine zweite, den verwendeten Laserstrahl nicht absorbierende Schicht beliebiger Einfärbung vorhanden ist.Multilayer film which can be inscribed with a laser beam, characterized in that a second layer of any coloration, which does not absorb the laser beam used, is present under a top layer which is thermally locally degradable by means of a laser beam and which consists of an aluminum substrate. Mehrschichtfolie nach Anspruch 1, wobei die zweite Schicht aus Farbmaterial, vorzugsweise aus Acryl, Latex oder wasserlöslichen Lackfarben besteht.Multi-layer film according to claim 1, wherein the second layer consists of color material, preferably of acrylic, latex or water-soluble lacquer paints. Mehrschichtfolie nach Anspruch 1 und 2, wobei die Deckschicht und die zweite Schicht durch einen Kleber verbunden sind.Multi-layer film according to claim 1 and 2, wherein the cover layer and the second layer are connected by an adhesive. Mehrschichtfolie nach Anspruch 1, wobei der zweiten Schicht auf ihrer der Deckschicht gegenüberliegenden Seite eine Klebschicht aufweist.The multilayer film according to claim 1, wherein the second layer has an adhesive layer on its side opposite the cover layer. Mehrschichtfolie nach Anspruch 1 und 4, wobei die Klebschicht durch eine Trägerschicht abgedeckt ist, die vor dem Gebrauch der Mehrschichtfolie entfernbar ist.A multilayer film according to claims 1 and 4, wherein the adhesive layer is covered by a carrier layer which can be removed before the multilayer film is used. Mehrschichtfolie nach einem der Ansprüche 1 bis 5, wobei die Mehrschichtfolie als Etikett ausgebildet ist.Multilayer film according to one of claims 1 to 5, wherein the multilayer film is designed as a label. Mehrschichtfolie nach einem der Ansprüche 1 bis 5, wobei die Mehrschichtfolie als streifenförmige Endlosware mit vorgestanzten Etiketten ausgebildet ist.Multi-layer film according to one of claims 1 to 5, wherein the multi-layer film is designed as a strip-shaped continuous product with pre-punched labels. Mehrschichtfolie nach einem der Ansprüche 1 bis 5, wobei die Mehrschichtfolie als Bogen mit vorgestanzten Etiketten ausgebildet ist.Multi-layer film according to one of claims 1 to 5, wherein the multi-layer film is designed as a sheet with pre-punched labels. Verfahren zum Beschriften einer Mehrschichtfolie nach Anspruch 1, dadurch gekennzeichnet, daß die aus einem Aluminium-Substrat bestehende Deckschicht mittels eines Laserstrahls thermisch lokal abgebaut wird und dabei die zweite Schicht beliebiger Einfärbung freigelegt wird.Method for labeling a multilayer film according to claim 1, characterized in that the cover layer consisting of an aluminum substrate is thermally broken down locally by means of a laser beam and the second layer of any color is thereby exposed.
EP94250235A 1993-09-27 1994-09-26 Laser writable multi layer sheet. Withdrawn EP0650153A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4332853 1993-09-27
DE19934332853 DE4332853A1 (en) 1993-09-27 1993-09-27 Multi-layer film that can be labeled with a laser beam

Publications (2)

Publication Number Publication Date
EP0650153A2 true EP0650153A2 (en) 1995-04-26
EP0650153A3 EP0650153A3 (en) 1997-08-27

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EP94250235A Withdrawn EP0650153A3 (en) 1993-09-27 1994-09-26 Laser writable multi layer sheet.

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6103989A (en) * 1998-02-09 2000-08-15 Lasercraft, Inc. System and method for forming discrete laser-etched labels from continuous label stock
ES2161189A1 (en) * 2000-02-24 2001-11-16 Com Lidertime S L Procedure for engraving watch faces or gift items.
US6498318B1 (en) * 1998-07-16 2002-12-24 Ball Corporation Method and apparatus for marking containers using laser light
US6706995B2 (en) 1998-07-16 2004-03-16 Ball Corporation Laser light marking of a container portion

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439097C2 (en) * 1994-11-02 1997-05-15 Orga Kartensysteme Gmbh Chip and / or magnetic stripe card
DE19517625A1 (en) * 1995-05-13 1996-11-14 Budenheim Rud A Oetker Chemie Laser printing esp. on glass or plastic substrate
DE19711108C1 (en) * 1997-03-06 1998-09-24 Reemtsma H F & Ph Process for applying a tax stamp to a pack of cigarettes
DE19822326C2 (en) * 1998-05-19 2002-11-21 Stefan Dengler Writable vulcanizing labels and device and method for writing and applying the same
DE102011007733B4 (en) 2011-04-20 2014-09-04 Witte plusprint GmbH Laser inscribable label material and label produced therefrom
DE102012205407B4 (en) * 2012-04-03 2020-10-08 Witte plusprint GmbH Laser-inscribable label material, label made therefrom and method for producing the label material

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GB2200323A (en) * 1986-12-16 1988-08-03 Tetra Pak Ab Offset printing
EP0388713A2 (en) * 1989-03-22 1990-09-26 Unilever N.V. Composite film
DE3939575A1 (en) * 1989-11-30 1991-06-06 Dornier Luftfahrt Metal bar code carrier - is of aluminium or aluminium alloy eloxadised black capable of being etched away by laser

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Patent Citations (3)

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GB2200323A (en) * 1986-12-16 1988-08-03 Tetra Pak Ab Offset printing
EP0388713A2 (en) * 1989-03-22 1990-09-26 Unilever N.V. Composite film
DE3939575A1 (en) * 1989-11-30 1991-06-06 Dornier Luftfahrt Metal bar code carrier - is of aluminium or aluminium alloy eloxadised black capable of being etched away by laser

Non-Patent Citations (1)

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Title
DATABASE WPI Section Ch, Week 8531 Derwent Publications Ltd., London, GB; Class G06, AN 85-187128 XP002033808 & JP 60 115 490 A (MATSUSHITA ELEC IND CO LTD) , 21.Juni 1985 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6103989A (en) * 1998-02-09 2000-08-15 Lasercraft, Inc. System and method for forming discrete laser-etched labels from continuous label stock
US6498318B1 (en) * 1998-07-16 2002-12-24 Ball Corporation Method and apparatus for marking containers using laser light
US6501046B1 (en) 1998-07-16 2002-12-31 Ball Corporation Method and apparatus for marking containers using laser light
US6706995B2 (en) 1998-07-16 2004-03-16 Ball Corporation Laser light marking of a container portion
ES2161189A1 (en) * 2000-02-24 2001-11-16 Com Lidertime S L Procedure for engraving watch faces or gift items.

Also Published As

Publication number Publication date
EP0650153A3 (en) 1997-08-27
DE4332853A1 (en) 1995-03-30

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