WO1990001418A1 - Procede pour produire des inscriptions sur des elements composites a l'aide de rayons laser et element composite ainsi obtenu - Google Patents

Procede pour produire des inscriptions sur des elements composites a l'aide de rayons laser et element composite ainsi obtenu Download PDF

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Publication number
WO1990001418A1
WO1990001418A1 PCT/DE1989/000514 DE8900514W WO9001418A1 WO 1990001418 A1 WO1990001418 A1 WO 1990001418A1 DE 8900514 W DE8900514 W DE 8900514W WO 9001418 A1 WO9001418 A1 WO 9001418A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
component
laser radiation
transparent
composite
Prior art date
Application number
PCT/DE1989/000514
Other languages
German (de)
English (en)
Inventor
Martin Wehner
Reinhart Poprawe
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. filed Critical Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Publication of WO1990001418A1 publication Critical patent/WO1990001418A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10247—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/24—Ablative recording, e.g. by burning marks; Spark recording
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B7/00—Machines, apparatus or hand tools for branding, e.g. using radiant energy such as laser beams
    • B44B7/002—Machines, apparatus or hand tools for branding, e.g. using radiant energy such as laser beams in layered material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/007—Marks, e.g. trade marks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/34—Printing on other surfaces than ordinary paper on glass or ceramic surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/267—Marking of plastic artifacts, e.g. with laser

Definitions

  • the invention relates to a method for labeling composite components with laser radiation, in particular for security panes, in which one of several interconnected component layers is at least partially transparent.
  • Laminated glass panes are used in automobile construction and safety panes are used in apparatus construction, each of which has to be labeled with a test number. These are attached by means of a label.
  • such labeling is done either by applying a dye to the outer surface of a composite pane by screen printing, or by etching the glass pane surface with a doctor's stamp using hydrofluoric acid.
  • Thermal shock effects cause cracks that can reach the deeper layers of the material from the surface.
  • the invention is based on the object of a
  • This object is achieved in that a material is used for the transparent component layer, the
  • Transmission rate for the laser radiation used for labeling is greater than the transmission rate of the material of the second component layer, and that the labeling of this second layer through the first, transparent layer with the latter leaving undamaged intensity and power parameters of the radiation.
  • the labeling is carried out without contact.
  • the laser radiation passes through the transparent component layer and acts on the second component layer, which has a lower transmission rate of its material. This is inside the composite component and is protected accordingly, so the labeling cannot be falsified.
  • the labeling on the inside of the composite component also increases the security of the composite component by avoiding any interference with the surface of the transparent component
  • Component layer It is essential for the method according to the invention that the component layers have different transmission rates for the laser radiation, so that by appropriate selection of the transmission rates and the intensity and power parameters of the laser radiation it can be determined that the latter is only effective in one of the component layers,
  • Labeling the second layer with laser radiation allows intensity and performance parameters to be controlled by a computer in accordance with the respective requirements.
  • the first component layer is advantageously ⁇ ine
  • Glass layer used which has a significant transmission rate for laser radiation. This glass layer absorbs only comparatively little energy from the laser radiation, and the process can be controlled so that the absorption in the glass layer does not lead to its melting or decomposition, while the transmitted laser radiation is able to pass onto the second Component layer act. In particular, they are used for glass
  • Wavelengths of light from the visible range to the UV range The selection becomes second depending on the absorption properties of the material used
  • a polymer layer is used that bonds two glass panes together.
  • such polymer layers are crystal-clear and are known per se with regard to their composition for bonding glass. With this method, conventional three-layer laminated glass panes can be produced.
  • the labeling can be done after the safety window has been completed, that is, as the last step in the manufacturing process, for B. after the final inspection.
  • This procedure ensures that the product actually has and retains the properties guaranteed by its labeling, that is to say that the labeling process ensures that the product
  • a xenon fluoride eximer laser or, if necessary, a neodymium-YAG laser is used for the labeling, the wavelengths of which are in the range of high transmission or even close to a local maximum of the transmission rate for glass and thus ensure that a minimum of the radiation energy in the glass pane remains when it is irradiated.
  • the laser radiation is pulsed and the inscription is made by decomposing the Polymer layer when using several successive pulses.
  • the labeling can be controlled by the choice of the pulse sizes, for example by the choice of pulse height and length and by the choice of the pulse pause length.
  • the use of laser pulses avoids overloading the irradiated layer and allows a targeted and metered decomposition of the layer to be labeled.
  • the method is advantageously carried out in such a way that the inscription is projected onto the composite component by the laser radiation using a mask with the desired imaging scale and / or
  • the first method with a mask is used in particular when a large number of composite components are each provided with the same lettering.
  • the use of a focused laser beam is particularly recommended when the composite components are to be labeled differently, because a computer control can then be used to achieve the different typefaces with short cycle times.
  • the computer control can also be used if the same image is to be used for differently designed composite components that have to be irradiated with different intensity and power parameters.
  • the invention also relates to a composite component made of several interconnected layers, in particular to a safety pane for automobile or apparatus construction, one of which is at least partially transparent, which is characterized in that the composite component is one of the
  • Transparent component layer has covered lettering, which consists of a laser radiation through the transparent Component layer changed material structure of the
  • Conversion of the material of the composite component to be labeled is to be understood to achieve a certain color impression, or a change in the macroscopic structure of the material, for example evaporation with subsequent recondensation.
  • Fig. 1 shows the transmission rate T as a function of
  • Wavelength ⁇ for different materials Wavelength ⁇ for different materials
  • Fig. 2 shows the laser intensity I and the absorbed intensity I ABS depending on the path X through different media.
  • the different absorption properties of the materials used are important for the application of the method according to the invention.
  • 1 shows, as the upper curve 3, the course of the transmission rate T in the range from 350 to 400 nm for glass. It can be seen that this material has a relative maximum at approximately 371 nm. The transmission rate is particularly high in this area.
  • the transmission rate of polymer according to curve 4 at wavelengths less than 375 nm is less than 1%, that is, the radiation is practically completely absorbed.
  • Labeling is around 371 nm because the majority of the energy of the beam passes through this material, but on the other hand a thin layer of the polymer is already sufficient to cover the entire energy of the light radiation
  • the 371 nm wavelength range is currently only accessible to dye lasers.
  • the xenon fluorine eximer laser can be used, which has a transmission rate of 35% at a wavelength of 351 nm, or solid-state lasers can be used, with a harmonic, e.g. . B. the third harmonic of the neodymium-YAG laser with a wavelength of 355 nm at a transmission rate of 45% in the glass.
  • Fig. 2 shows representations for the successive
  • Glass layer is referred to as component layer 1 and the
  • Part of FIG. 2 shows the decomposition threshold of glass, which lies above the decomposition threshold of the polymer layer, the latter being an area, while the decomposition threshold of glass is assigned to a single I ABS due to the fixed melting temperature.
  • the air does not absorb laser radiation, so the
  • Curve in FIG. 2 above is parallel to the X axis and coincides with the X axis in FIG. 2 below. Only little laser radiation is absorbed in glass because glass has a high transmission rate T. As a result, the intensity I drops in the
  • Component layer 1 only slightly.
  • the absorbed intensity shows small and decreasing values over the thickness of the layer 1, which are below the decomposition threshold of the glass, so that the latter is not damaged.
  • the falling values of I ABS in glass can be explained by the decreasing intensity with increasing thickness according to FIG. 2, upper part, so that the intensity I ABS absorbed per unit volume also decreases accordingly.
  • the component layer 2 has a low transmission rate T or a high absorption, so that the intensity of the radiation drops very quickly to very low values.
  • the absorbed intensity I ABS is correspondingly large with a peak value 5 which reaches and exceeds the decomposition threshold of polymer, so that changes in the structure of the polymer are achieved there.
  • the intensity and power parameters of radiation with a suitable wavelength are set so that the different thermal properties of the materials are used. While the polymer layer or the component layer 2 is deliberately damaged, but only in a partial area of its thickness, the component layer 1 remains undamaged overall because the absorbed power is not sufficient for melting.
  • the method according to the invention enables a sufficiently recognizable inscription with laser radiation without damaging the surface of the composite component.

Landscapes

  • Laser Beam Processing (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

Procédé pour produire des inscriptions sur des éléments composites à l'aide de rayons laser, en particulier des vitres de sécurité, où une des couches stratifiées de l'élément est au moins partiellement transparente. Afin d'obtenir une inscription suffisamment claire sans endommager la surface de l'élément composite, on utilise pour la couche transparente de l'élément une matière dont le taux de transmission des rayons laser servant à l'inscription est supérieur au taux de transmission de la matière de la seconde couche de l'élément, et l'inscription est portée sur ladite seconde couche à travers la première couche, transparente, avec un rayonnement d'une intensité et d'une puissance qui n'endommage pas ladite première couche.
PCT/DE1989/000514 1988-08-03 1989-08-03 Procede pour produire des inscriptions sur des elements composites a l'aide de rayons laser et element composite ainsi obtenu WO1990001418A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3826355A DE3826355A1 (de) 1988-08-03 1988-08-03 Verfahren zum beschriften von verbundbauteilen mit laserstrahlung und mit diesem verfahren hergestelltes verbundbauteil
DEP3826355.6 1988-08-03

Publications (1)

Publication Number Publication Date
WO1990001418A1 true WO1990001418A1 (fr) 1990-02-22

Family

ID=6360153

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1989/000514 WO1990001418A1 (fr) 1988-08-03 1989-08-03 Procede pour produire des inscriptions sur des elements composites a l'aide de rayons laser et element composite ainsi obtenu

Country Status (4)

Country Link
EP (1) EP0428575A1 (fr)
AU (1) AU4043089A (fr)
DE (1) DE3826355A1 (fr)
WO (1) WO1990001418A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665855A1 (fr) * 1990-08-15 1992-02-21 United Distillers Plc Marquage sous-jacent.
FR2690862A1 (fr) * 1992-05-07 1993-11-12 Ares Sa Procédé et installation de gravure au laser de la surface intérieure d'une paroi d'un réceptacle.
EP0637517A1 (fr) * 1993-08-05 1995-02-08 Saint-Gobain Vitrage Procédé de marquage d'un vitrage automobile en place
WO1995025639A1 (fr) * 1994-03-24 1995-09-28 Laserplus Oy Procede et dispositif permettant de realiser des marques visibles sur un materiau transparent
US5637244A (en) * 1993-05-13 1997-06-10 Podarok International, Inc. Method and apparatus for creating an image by a pulsed laser beam inside a transparent material
ES2109161A1 (es) * 1995-05-12 1998-01-01 Dalmau Ricard Barlabe Procedimiento para el marcado de dibujos, textos o similares en el interior de una pieza de un material plastico transparente o translucido.
WO1999059815A1 (fr) * 1998-05-15 1999-11-25 Pilkington Automotive Uk Limited Vitrage de vehicule
DE19824349A1 (de) * 1998-05-30 1999-12-02 Beiersdorf Ag Verwendung eines lasersensiblen Lacks zur Herstellung einer laserbeschriftbaren Glasscheibe
EA000573B1 (ru) * 1997-10-15 1999-12-29 Ооо "Эфтэн" Способ маркировки ценных объектов
EP2792499A1 (fr) * 2013-04-19 2014-10-22 Siemens Aktiengesellschaft Procédé destiné à l'inscription sur un composant

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022745A1 (de) * 1990-07-18 1992-01-23 Hans Lang Gmbh & Co Kg Ing Verfahren zum anbringen von konfigurationen, wie schriften, bildern o. dgl., auf der rueckseite eines spiegels
DE19512157C1 (de) * 1995-03-31 1996-05-23 Klaus Kall Verfahren zum Beschichten einer transparenten Trägerplatte sowie danach hergestellte beschichtete Trägerplatte
JP2000263840A (ja) 1999-03-11 2000-09-26 Hitachi Ltd レーザ印字方法及びレーザ印字装置
DE10015702A1 (de) * 2000-03-29 2001-10-18 Vitro Laser Gmbh Verfahren zum Einbringen wenigstens einer Innengravur in einen flachen Körper und Vorrichtung zum Durchführen des Verfahrens
FR2833518B1 (fr) * 2001-12-14 2004-06-25 Gemplus Card Int Support d'information marquee par laser
IT1394940B1 (it) * 2009-01-13 2012-07-27 Bottero Spa Metodo per la codifica di una lastra di vetro stratificata e lastra di vetro stratificata ottenuta con tale metodo
DE102011107388A1 (de) 2010-07-13 2012-01-19 Marquardt Gmbh Element mit verdeckter Beschriftung
DE102017108081A1 (de) * 2017-04-13 2018-10-18 HELLA GmbH & Co. KGaA Verfahren zur Kennzeichnung einer Lichtscheibe einer Beleuchtungseinrichtung eines Fahrzeugs
DE102021109294A1 (de) 2021-04-14 2022-10-20 Ifm Electronic Gmbh Kapazitiver Schalter

Citations (4)

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Publication number Priority date Publication date Assignee Title
FR2027575A1 (fr) * 1968-12-04 1970-10-02 Du Pont
US3715734A (en) * 1970-11-12 1973-02-06 J Fajans Memory storage device and method of making the same
FR2495982A1 (fr) * 1980-12-16 1982-06-18 Saint Gobain Vitrage Procede de traitement d'un vitrage feuillete, notamment pour y executer une marque non falsifiable et vitrages obtenus
US4585514A (en) * 1984-10-24 1986-04-29 Pro-Guard, Inc. Method of applying theft-deterrent indicia

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3411797A1 (de) * 1984-03-30 1985-10-10 Bayer Ag, 5090 Leverkusen Verfahren zur kennzeichnung von kunststoffteilen
US4705698A (en) * 1986-10-27 1987-11-10 Chronar Corporation Isolation of semiconductor contacts

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2027575A1 (fr) * 1968-12-04 1970-10-02 Du Pont
US3715734A (en) * 1970-11-12 1973-02-06 J Fajans Memory storage device and method of making the same
FR2495982A1 (fr) * 1980-12-16 1982-06-18 Saint Gobain Vitrage Procede de traitement d'un vitrage feuillete, notamment pour y executer une marque non falsifiable et vitrages obtenus
US4585514A (en) * 1984-10-24 1986-04-29 Pro-Guard, Inc. Method of applying theft-deterrent indicia

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247677B (en) * 1990-08-15 1995-04-19 United Distillers Plc Sub-surface marking
WO1992003297A1 (fr) * 1990-08-15 1992-03-05 United Distillers Plc Procede de marquage en-dessous de la surface
GB2247677A (en) * 1990-08-15 1992-03-11 United Distillers Plc Sub-surface marking
US5206496A (en) * 1990-08-15 1993-04-27 United Distillers, Plc Sub-surface marking
FR2665855A1 (fr) * 1990-08-15 1992-02-21 United Distillers Plc Marquage sous-jacent.
FR2690862A1 (fr) * 1992-05-07 1993-11-12 Ares Sa Procédé et installation de gravure au laser de la surface intérieure d'une paroi d'un réceptacle.
US5637244A (en) * 1993-05-13 1997-06-10 Podarok International, Inc. Method and apparatus for creating an image by a pulsed laser beam inside a transparent material
EP0637517A1 (fr) * 1993-08-05 1995-02-08 Saint-Gobain Vitrage Procédé de marquage d'un vitrage automobile en place
WO1995025639A1 (fr) * 1994-03-24 1995-09-28 Laserplus Oy Procede et dispositif permettant de realiser des marques visibles sur un materiau transparent
US6442974B1 (en) 1994-03-24 2002-09-03 Laserplus Oy Method and device for making visually observable markings onto transparent material
ES2109161A1 (es) * 1995-05-12 1998-01-01 Dalmau Ricard Barlabe Procedimiento para el marcado de dibujos, textos o similares en el interior de una pieza de un material plastico transparente o translucido.
EA000573B1 (ru) * 1997-10-15 1999-12-29 Ооо "Эфтэн" Способ маркировки ценных объектов
WO1999059815A1 (fr) * 1998-05-15 1999-11-25 Pilkington Automotive Uk Limited Vitrage de vehicule
DE19824349A1 (de) * 1998-05-30 1999-12-02 Beiersdorf Ag Verwendung eines lasersensiblen Lacks zur Herstellung einer laserbeschriftbaren Glasscheibe
DE19824349C2 (de) * 1998-05-30 2000-06-15 Beiersdorf Ag Verfahren zur Herstellung einer laserbeschriftbaren Glasscheibe oder eines Verbundglases
US6444068B1 (en) * 1998-05-30 2002-09-03 Tesa Ag Use of a laser-sensitive coating for the production of a laser-inscribable sheet of glass
EP2792499A1 (fr) * 2013-04-19 2014-10-22 Siemens Aktiengesellschaft Procédé destiné à l'inscription sur un composant

Also Published As

Publication number Publication date
DE3826355A1 (de) 1990-04-26
EP0428575A1 (fr) 1991-05-29
DE3826355C2 (fr) 1991-12-05
AU4043089A (en) 1990-03-05

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