DE19523086A1 - Use of polymer molding compounds for partial color changes by laser energy to generate optical information with very good contrasts - Google Patents

Use of polymer molding compounds for partial color changes by laser energy to generate optical information with very good contrasts

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Publication number
DE19523086A1
DE19523086A1 DE19523086A DE19523086A DE19523086A1 DE 19523086 A1 DE19523086 A1 DE 19523086A1 DE 19523086 A DE19523086 A DE 19523086A DE 19523086 A DE19523086 A DE 19523086A DE 19523086 A1 DE19523086 A1 DE 19523086A1
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Germany
Prior art keywords
weight
use according
contain
optical information
laser energy
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Withdrawn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
DE19523086A
Other languages
German (de)
Inventor
Aziz El Dipl Chem Dr Sayed
Frank Dipl Ing Gerling
Salvatore Dipl Ing Messina
Herbert Dipl Ing Magerstedt
Karsten Dipl Chem Dr Idel
Edgar Dipl Chem Dr Ostlinning
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Bayer AG
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Bayer AG
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 Bayer AG filed Critical Bayer AG
Priority to DE19523086A priority Critical patent/DE19523086A1/en
Priority to CA002225717A priority patent/CA2225717A1/en
Priority to PCT/EP1996/002551 priority patent/WO1997001446A1/en
Priority to EP96922802A priority patent/EP0835185A1/en
Priority to JP9504126A priority patent/JPH11508202A/en
Priority to KR1019970709702A priority patent/KR19990028386A/en
Priority to TW085107582A priority patent/TW404963B/en
Publication of DE19523086A1 publication Critical patent/DE19523086A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
    • 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
    • B41M5/36—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention pertains to the use of polymer molding compounds composed of polymers selected from the group of polyamides, polyolefins, ABS-type graft polymer, polyacrylates, polymethacrylates or a mixture of polycarbonate, ABS-type graft polymer and optionally copolymer, carbon black, reinforcing materials, elastomer modifier, flame-protection additives and processing additives, to produce light or gray markings on a dark background using laser inscription, in particular to generate high-contrast optical information, for example letters, numbers, patterns and/or pictures, etc.

Description

Die Erfindung betrifft die Verwendung von Polymerformmassen zur partiellen farblichen Veränderung durch Laserenergie, insbesondere zur Erzeugung von optischen Informationen, z. B. Buchstaben, Zahlen, Mustern und/oder Bildern usw. mit sehr guten Kontrasten.The invention relates to the use of polymer molding compositions for partial Color change due to laser energy, especially for the generation of optical information, e.g. B. letters, numbers, patterns and / or pictures etc. with very good contrasts.

Die Aufbringung von Mustern, Buchstaben, Zahlen und/oder Bildern mittels Laser­ strahlenschreiber zur Kennzeichnung und Dekoration von Formteilen aus Kunststoffen gewinnt in zunehmendem Maße an Bedeutung. Neben der Wirt­ schaftlichkeit gegenüber herkömmlichen Beschriftungsverfahren bietet die Laserbe­ schriftung hohe Flexibilität hinsichtlich Schriftart, Schriftgröße und Schriftdesign, unabhängig von der Lotgröße. Das Markieren von elektrischen/elektronischen Bauelementen, Tastenkappen, Gehäusen und Ausweiskarten ist eine klassische An­ wendung für Laserbeschriftung.The application of patterns, letters, numbers and / or images using a laser Radiation pen for marking and decorating molded parts Plastics are becoming increasingly important. In addition to the host Laserbe offers economy over conventional marking processes high flexibility with regard to font, font size and font design, regardless of the lot size. Marking electrical / electronic Components, keycaps, housings and ID cards are a classic feature application for laser marking.

Folgende Möglichkeiten zur Kennzeichnung von Kunststoffen mittels Laserbe­ schriftung sind bekannt.The following options for marking plastics using laser are known.

1. Dunkle Zeichen auf hellem Hintergrund1. Dark characters on a light background

Eine Polymermatrix wird mit hellen Färbemitteln - Pigmenten oder Farb­ stoffen - eingefärbt. Bei der Laserbeschriftung wird durch Absorption der Laserenergie die Polymermatrix/das Färbemittel partiell carbonisiert. Dabei entsteht eine dunkle Verfärbung der hellen Polymermatrix. Dieses Ver­ halten ist auf Polymere, die zum Carbonisieren neigen, beschränkt.A polymer matrix is made with light colorants - pigments or dyes fabrics - colored. In the case of laser marking, the Laser energy partially carbonizes the polymer matrix / colorant. Here there is a dark discoloration of the light polymer matrix. This ver hold is limited to polymers that tend to carbonize.

Die hierdurch erreichbaren Kontrastverhältnisse reichen für viele Einsatz­ gebiete nicht aus. Die Zugabe von Färbemitteln, die durch Absorption der Laserenergie ihre Farbe ändern, wird in EP-A 0 190 997 beschrieben. So wird z. B. Polybutylenterephthalat mit Eisenoxid rot gefärbt. Bei der Laserbeschriftung entstehen dunkle Zeichen auf rotem Hintergrund. Das Kontrastverhältnis hat sich als nicht ausreichend erwiesen.The contrast ratios that can be achieved in this way are sufficient for many applications do not command. The addition of colorants by absorption of the  Laser energy changing color is described in EP-A 0 190 997. So z. B. Polybutylene terephthalate colored red with iron oxide. In the Laser lettering creates dark characters on a red background. The Contrast ratio has proven to be insufficient.

2. Helle Zeichen auf dunklem Hintergrund2. Bright characters on a dark background

Für diese Art der Beschriftung haben sich Polymere, Färbemittel oder Additive, die durch Absorption der Laserenergie zum Schäumen neigen, bewährt. Durch das Aufschäumen entstehen helle Schriften auf dunklem Untergrund. Die erreichbaren Kontrastverhältnisse sind für viele Einsatz­ gebiete nicht ausreichend.Polymers, dyes or Additives that tend to foam due to absorption of laser energy, proven. Foaming creates bright fonts on dark ones Underground. The achievable contrast ratios are for many uses do not command sufficient.

Die vorliegende Erfindung betrifft Polymerformmassen, die bei Absorption der Laserenergie helle Zeichen auf dunklem Hintergrund mit sehr hohem Kontrastverhältnis ergeben.The present invention relates to polymer molding compositions which are used in absorption laser energy bright signs on dark background with very high Contrast ratio result.

Überraschend wurde gefunden, daß durch die Verwendung von sehr fein verteiltem Ruß in der Polymermatrix helle Zeichen auf dunklem Hintergrund durch Absorption der Laserenergie erreicht werden können. Durch Veränderung der Laserenergie können verschiedene Graustufen erhalten werden.Surprisingly, it was found that by using very fine distributed carbon black in the polymer matrix bright signs on dark Background can be achieved by absorption of laser energy. By changing the laser energy, different shades of gray can be created be preserved.

Gegenstand der Erfindung ist die Verwendung von Polymerformmassen bestehend aus:The invention relates to the use of polymer molding compositions out:

  • A) 99,95 bis 50 Gew.-% Polymermatrix,A) 99.95 to 50% by weight of polymer matrix,
  • B) 0,03 bis 0,2 Gew.-% Ruß,B) 0.03 to 0.2% by weight of carbon black,
  • C) 0 bis 2,0 Gew.-% weißes Pigment,C) 0 to 2.0% by weight of white pigment,
  • D) 0 bis 50 Gew.-% Verstärkungsstoffe,D) 0 to 50% by weight of reinforcing materials,
  • E) 0 bis 20 Gew.-% Elastomermodifikator,E) 0 to 20% by weight of elastomer modifier,
  • F) 0 bis 55 Gew.-% Flammschutzadditive undF) 0 to 55% by weight of flame retardant additives and
  • G) 0 bis 2 Gew.-% VerarbeitungsadditivenG) 0 to 2 wt .-% processing additives

zur Erzeugung von hellen oder grauen Zeichen auf dunklem Hintergrund mittels Laserstrahlenschreiber. for generating light or gray characters on a dark background using Laser beam recorder.  

Ein weiterer Gegenstand der Erfindung ist die Verwendung der gefärbten Poly­ mere zur Herstellung von Formgegenständen, die mittels Laserstrahlenschreiber beschriftet, gekennzeichnet oder mit bildlichen Darstellungen versehen werden können.Another object of the invention is the use of the colored poly mere for the production of shaped objects by means of laser beam recorders be labeled, labeled or provided with pictorial representations can.

Die Herstellung der erfindungsgemäß verwendeten Polymerformmassen kann auf handelsüblichen Einwellen- und Zweiwellenextrudern erfolgen. Die Dosierung des Rußes erfolgt als Farbkonzentrat. Zur Herstellung der Formteile können handelsübliche Spritzgießmaschinen verwendet werden.The polymer molding compositions used according to the invention can be prepared commercially available single-shaft and twin-shaft extruders. The dosage of the Soot occurs as a color concentrate. Can be used to manufacture the molded parts commercially available injection molding machines can be used.

Als Polymermatrix A) für die erfindungsgemäß verwendeten Formmassen eignen sich 99,5 bis 50 Gew.-% Polymere z. B. auf Basis Polyamid, Polyester, Polyacrylat, Polymethacrylat, ABS, Polyethylen, Polypropylen, Polystyrol, Poly­ vinylchlorid, Polyoxymethylen, Polyimid, Polyether und Polyetherketone oder Mischungen daraus.Suitable as polymer matrix A) for the molding compositions used according to the invention 99.5 to 50 wt .-% polymers such. B. based on polyamide, polyester, Polyacrylate, polymethacrylate, ABS, polyethylene, polypropylene, polystyrene, poly vinyl chloride, polyoxymethylene, polyimide, polyether and polyether ketones or Mixtures of these.

Als Ruß B) der erfindungsgemäß verwendeten Formmassen eignen sich 0,03 bis 0,2 Gew.-% sehr fein verteilte Ruße. Der Ruß kann als reiner Ruß (Teilchengröße 13 bis 20 nm), in Perlenformen oder als Konzentrat wie z. B. in Microlen Schwarz B® der Fa. Ciba Geigy (Basel), eingesetzt werden.0.03 to are suitable as carbon black B) of the molding compositions used according to the invention 0.2% by weight of very finely divided carbon blacks. The carbon black can be pure carbon black (particle size 13 to 20 nm), in pearl shapes or as a concentrate such. B. in microlens Black B® from Ciba Geigy (Basel).

Als weißes Pigment C) können bis zu 2 Gew.-% Titandioxid und/oder Zinksulfid verwendet werden.Up to 2% by weight of titanium dioxide and / or zinc sulfide can be used as the white pigment C) be used.

Als Verstärkung D) der erfindungsgemäß verwendeten Formmassen werden bis zu 50 Gew.-% handelsübliche Glasfasern und/oder Mineralfasern und/oder minera­ lische Füllstoffe wie Kaolin, Wollastonit, Talkum oder Kreide verwendet.As reinforcement D) of the molding compositions used according to the invention are up to 50% by weight of commercially available glass fibers and / or mineral fibers and / or minera fillers such as kaolin, wollastonite, talc or chalk are used.

Als Elastomermodifikator E) gemäß dieser Erfindung werden bis zu 20 Gew.-% handelsübliche EP(D)M-Kautschuke, Pfropfkautschuke auf Basis Butadien Styrol Acrylnitril, Acrylatkautschuke, Polyurethane oder EVA.Copolymere mit oder ohne funktionelle Kopplungsgruppen verwendet.Up to 20% by weight are used as elastomer modifier E) according to this invention. commercially available EP (D) M rubbers, graft rubbers based on butadiene styrene Acrylonitrile, acrylate rubbers, polyurethanes or EVA copolymers with or without functional coupling groups used.

Als Flammschutzadditive F) werden bis zu 55 Gew.-% handelsübliche organische Verbindungen oder Halogenverbindungen mit Synergisten oder handelsübliche organische Stickstoffverbindungen oder organisch/anorganische Phosphorverbin­ dungen verwendet. Auch mineralische Flammschutzadditive wie Mg-Hydroxid oder Ca-Mg-Carbonat-Hydrat können eingesetzt werden.Up to 55% by weight of commercially available organic are used as flame retardant additives F) Compounds or halogen compounds with synergists or commercially available organic nitrogen compounds or organic / inorganic phosphorus compounds  uses. Also mineral flame retardants such as Mg hydroxide or Ca-Mg carbonate hydrate can be used.

Die Verarbeitungsadditive G) bestehen aus bis zu 2 Gew.-% handelsüblichen Gleitmitteln, Stabilisatoren, Entformungsmitteln und Nukleierungsmitteln.The processing additives G) consist of up to 2% by weight of commercially available Lubricants, stabilizers, mold release agents and nucleating agents.

Als Energiequellen können handelsübliche Lasersysteme, bevorzugt Nd-YAG-Fest­ körper, verwendet werden. Die Wellenlänge kann zwischen 193 nm und 10600 nm, bevorzugt 1064 nm, liegen.Commercial laser systems, preferably Nd-YAG-Fest, can be used as energy sources body to be used. The wavelength can be between 193 nm and 10600 nm, preferably 1064 nm.

Die erfindungsgemäß verwendeten Formmassen können zur Aufbringung von optischen Informationen in Form von Mustern, Graphiken, Zahlen, Buchstaben, Schriftzeichen, Bildern (z. B. Paßbildern, Portraits, Fotos) usw. mittels Laserenergie, z. B. durch Laserstrahlenschreiber eingesetzt werden.The molding compositions used according to the invention can be used to apply optical information in the form of patterns, graphics, numbers, letters, Characters, pictures (e.g. passport photos, portraits, photos) etc. by means of Laser energy, e.g. B. be used by laser beam recorder.

So können z. B. fotographische Abbildungen auf die erfindungsgemäß verwendeten Formmassen übertragen werden. So z. B. photographic images of the invention Molding compounds are transferred.  

BeispieleExamples

Folgende Produkte wurden in den Beispielen verwendet:
Polyamid 6 = Durethan B 31SK® der Bayer AG
Polyamid 6 glasfaserverstärkt (30%) = Durethan BKV 30 H® der Bayer AG
Polyamid 6 glasfaserverstärkt (30%) schlagzähmod. = Durethan BKV 130® der Bayer AG
Polyamid 6 glasfaserverstärkt (30%) mit ted. Wasseraufnahme = Durethan
RM KU 2-2501® der Bayer AG
Polyamid 6 glasfaser- und mineralverstärkt = Durethan BG 30 X® der Bayer AG
Teilaromat. Polyamid = Durethan T 40® der Bayer AG
Polybutylenterephthalat = Pocan B 1506® der Bayer AG
Polybutylenterephthalat glasfaserverstärkt (25%) = Pocon B 3225® der Bayer AG
ABS = Novodur P2H® der Bayer AG
ABS + Polycarbonat flammgeschützt = Bayblend FR 90®
PMMA = Plexiglas 7N® der Fa. Röhm GmbH Darmstadt
Bayertitan PKB-2® der Bayer AG
Ruß Microlen Schwarz B©/Ciba Geigy
Printex 300®/Degussa
Raven 2000®/Rhein Chemie, 20%iges Konzentrat
KN 2014®Cabbot (Belgien)
Sachtolith® der Fa. SachtlebenThe following products were used in the examples:
Polyamide 6 = Durethan B 31SK® from Bayer AG
Polyamide 6 glass fiber reinforced (30%) = Durethan BKV 30 H® from Bayer AG
Polyamide 6 glass fiber reinforced (30%) impact mod. = Durethan BKV 130® from Bayer AG
Polyamide 6 glass fiber reinforced (30%) with ted. Water intake = Durethan
RM KU 2-2501® from Bayer AG
Polyamide 6 glass fiber and mineral reinforced = Durethan BG 30 X® from Bayer AG
Partly aromatic. Polyamide = Durethan T 40® from Bayer AG
Polybutylene terephthalate = Pocan B 1506® from Bayer AG
Polybutylene terephthalate glass fiber reinforced (25%) = Pocon B 3225® from Bayer AG
ABS = Novodur P2H® from Bayer AG
ABS + polycarbonate flame retardant = Bayblend FR 90®
PMMA = Plexiglas 7N® from Röhm GmbH Darmstadt
Bayertitan PKB-2® from Bayer AG
Carbon black Microlen B © / Ciba Geigy
Printex 300® / Degussa
Raven 2000® / Rhein Chemie, 20% concentrate
KN 2014®Cabbot (Belgium)
Sachtolith® from Sachtleben

Beispiele 1 bis 6 (Tabelle 1 und 2)Examples 1 to 6 (Tables 1 and 2)

Die Farbstoffe wurden mit dem Granulat vorgemischt und über einen Zweiwellenschneckenkneter extrudiert und granuliert. Das erhaltene Granulat wurde auf einer Arburg-Spritzgießmaschine zu Platten verspritzt und mit einem FOBALLAS ND-YAG-Laser beschriftet.The dyes were premixed with the granules and over a Twin-screw extruder extruded and granulated. The granules obtained was injection molded into sheets on an Arburg injection molding machine and with a FOBALLAS ND-YAG laser labeled.

Je nach Intensität der Laserstrahlenenergie werden weiße oder ganze Zeichen auf schwarzem Hintergrund erzeugt. Alle Schriftzeichen und Symbole zeichnen sich durch sehr gute Kontraste mit unterschiedlichen Graustufungen aus. Depending on the intensity of the laser beam energy, white or whole characters appear generated black background. All characters and symbols stand out with very good contrasts with different shades of gray.  

Tabelle 1 Table 1

Tabelle 2 Table 2

Claims (12)

1. Verwendung von Polymerformmassen aus
  • A) 99,95 bis 50 Gew.-% Polymermatrix,
  • B) 0,03 bis 0,2 Gew.-% Ruß,
  • C) 0 bis 2,0 Gew.-% weißes Pigment,
  • D) 0 bis 50 Gew.-% Verstärkungsstoffe,
  • E) 0 bis 20 Gew.-% Elastomermodifikator,
  • F) 0 bis 55 Gew.-% Flammschutzadditive und
  • G) 0 bis 2 Gew.-% Verarbeitungsadditiven
1. Use of polymer molding compounds
  • A) 99.95 to 50% by weight of polymer matrix,
  • B) 0.03 to 0.2% by weight of carbon black,
  • C) 0 to 2.0% by weight of white pigment,
  • D) 0 to 50% by weight of reinforcing materials,
  • E) 0 to 20% by weight of elastomer modifier,
  • F) 0 to 55% by weight of flame retardant additives and
  • G) 0 to 2 wt .-% processing additives
zur Erzeugung von heller oder grauen Zeichen auf dunklen Hintergrund mittels Laserbeschriftung.to create light or gray characters on a dark background using laser inscription. 2. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß sie Microlen Schwarz B® als 50%iges Konzentrat als feinverteilten Ruß enthalten.2. Use according to claim 1, characterized in that they are microlens Schwarz B® as 50% concentrate as finely divided soot. 3. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß sie als Polymere 99,5% bis 50 Gew.-% Polyamid, Polyester, Polyacrylat, Poly­ methacrylat, ABS, Polyyethylen, Polypropylen, Polystyrol, Polyvinyl­ chlorid, Polyoxyymethylen, Polyimid, Polyether, oder Polyetherketone bzw. Mischungen daraus enthalten.3. Use according to claim 1, characterized in that it as Polymers 99.5% to 50% by weight polyamide, polyester, polyacrylate, poly methacrylate, ABS, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyoxyymethylene, polyimide, polyether, or polyether ketones or Mixtures of these contain. 4. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß sie als Verstärkungsstoffe 0 bis 50% Glasfasern, Mineralfasern oder mineralische Füllstoffe enthalten.4. Use according to claim 1, characterized in that it as Reinforcing materials 0 to 50% glass fibers, mineral fibers or mineral Contain fillers. 5. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß sie als Elastomermodifikator 0 bis 20 Gew.-% EPM, EPDM, Acrylatkautschuke oder EVA-Copolymere enthalten.5. Use according to claim 1, characterized in that it as Elastomer modifier 0 to 20 wt .-% EPM, EPDM, acrylate rubbers or contain EVA copolymers. 6. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß sie als Flamm­ schutzmittel 0 bis 55 Gew.-% handelsübliche Flammschutzadditive auf Basis organischer Halogen-, Stickstoff-, Phosphorverbindungen, oder Mg- Hydroxid, oder Ca-Mg-Carbonat-Hydrat enthalten. 6. Use according to claim 1, characterized in that it is a flame protective agent 0 to 55% by weight of commercially available flame retardants Based on organic halogen, nitrogen, phosphorus, or Mg Contain hydroxide, or Ca-Mg carbonate hydrate.   7. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß sie als Verarbeitungsadditive 0 bis 2% Gleitmittel, Stabilisatoren, Entformungs­ mittel und Nukleierungsmittel enthalten.7. Use according to claim 1, characterized in that it as Processing additives 0 to 2% lubricants, stabilizers, mold release contain agents and nucleating agents. 8. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß sie als Verarbeitungsadditive 0 bis 2% Gleitmittel, Stabilisatoren, Entformungs­ mittel und Nukleierungsmittel enthalten.8. Use according to claim 1, characterized in that it as Processing additives 0 to 2% lubricants, stabilizers, mold release contain agents and nucleating agents. 9. Verwendung nach Anspruch 1 zur Aufbringung von optischen Informationen mittels Laserenergie.9. Use according to claim 1 for the application of optical Information using laser energy. 10. Bilder gemäß Anspruch 1 und 9.10. Images according to claims 1 and 9. 11. Paßbild, Portrait, Foto übertragen gemäß Anspruch 10.11. Passport picture, portrait, photo transferred according to claim 10.
DE19523086A 1995-06-26 1995-06-26 Use of polymer molding compounds for partial color changes by laser energy to generate optical information with very good contrasts Withdrawn DE19523086A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE19523086A DE19523086A1 (en) 1995-06-26 1995-06-26 Use of polymer molding compounds for partial color changes by laser energy to generate optical information with very good contrasts
CA002225717A CA2225717A1 (en) 1995-06-26 1996-06-13 Use of polymer molding compounds to produce partial color change using laser energy to generate high-contrast optical information
PCT/EP1996/002551 WO1997001446A1 (en) 1995-06-26 1996-06-13 Use of polymer molding compounds to produce partial color change using laser energy to generate high-contrast optical information
EP96922802A EP0835185A1 (en) 1995-06-26 1996-06-13 Use of polymer molding compounds to produce partial color change using laser energy to generate high-contrast optical information
JP9504126A JPH11508202A (en) 1995-06-26 1996-06-13 Use of polymer molding compositions to produce partial color changes with laser energy to produce very high contrast optical information
KR1019970709702A KR19990028386A (en) 1995-06-26 1996-06-13 Use for the generation of high contrast optical information of polymer molding compositions that cause partial discoloration by laser energy
TW085107582A TW404963B (en) 1995-06-26 1996-06-25 Use of polymer moulding compositions for obtaining partial colour change by means of laser energy for the production of very high-contrast optical information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19523086A DE19523086A1 (en) 1995-06-26 1995-06-26 Use of polymer molding compounds for partial color changes by laser energy to generate optical information with very good contrasts

Publications (1)

Publication Number Publication Date
DE19523086A1 true DE19523086A1 (en) 1997-01-02

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Country Status (7)

Country Link
EP (1) EP0835185A1 (en)
JP (1) JPH11508202A (en)
KR (1) KR19990028386A (en)
CA (1) CA2225717A1 (en)
DE (1) DE19523086A1 (en)
TW (1) TW404963B (en)
WO (1) WO1997001446A1 (en)

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EP0909655A2 (en) * 1997-10-14 1999-04-21 Shin-Etsu Polymer Co., Ltd. Method for forming pad character in push button switch and method for manufacturing cover member for push button switch
DE102010035392A1 (en) * 2010-08-25 2012-03-01 Siemens Aktiengesellschaft Operating element e.g. electrical switch for building installation, comprises actuatable control element having surface for manual operation of operating element, where surface of actuatable control element comprises thermoplastic material
EP3589697A4 (en) * 2018-05-25 2020-04-29 Evonik Operations GmbH Laser markable materials comprising a polyamide component and carbon black

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JPH09100390A (en) * 1995-10-05 1997-04-15 Japan Synthetic Rubber Co Ltd Resin composition for laser marking
JP4176877B2 (en) * 1998-07-27 2008-11-05 ダイセル化学工業株式会社 Laser markable resin composition, marking method and molded product with marking
US6207344B1 (en) * 1999-09-29 2001-03-27 General Electric Company Composition for laser marking
KR100396546B1 (en) 2000-12-21 2003-09-02 삼성전자주식회사 Disk player, and turntable incorporating self-compensating dynamic balancer, clamper incorporating self-compensating dynamic balancer and spindle motor incorporating self compensating dynamic balancer adopted for disk player
US7815124B2 (en) 2002-04-09 2010-10-19 L-1 Secure Credentialing, Inc. Image processing techniques for printing identification cards and documents
JP4114417B2 (en) * 2002-07-05 2008-07-09 東洋インキ製造株式会社 Method for producing thermal recording composition and thermal recording method
NL1022081C2 (en) * 2002-12-04 2004-06-07 Dsm Nv Composition useful as a laser writable composition for marking purposes comprises a polymeric laser light absorber dispersed in a matrix polymer and a reflector
JP4860157B2 (en) 2002-12-04 2012-01-25 メルク パテント ゲーエムベーハー Laser light absorption additive
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Also Published As

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JPH11508202A (en) 1999-07-21
KR19990028386A (en) 1999-04-15
WO1997001446A1 (en) 1997-01-16
EP0835185A1 (en) 1998-04-15
CA2225717A1 (en) 1997-01-16
TW404963B (en) 2000-09-11

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