EP0201627A2 - Procédé pour le marquage des matières macromoléculaires - Google Patents

Procédé pour le marquage des matières macromoléculaires Download PDF

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Publication number
EP0201627A2
EP0201627A2 EP85112773A EP85112773A EP0201627A2 EP 0201627 A2 EP0201627 A2 EP 0201627A2 EP 85112773 A EP85112773 A EP 85112773A EP 85112773 A EP85112773 A EP 85112773A EP 0201627 A2 EP0201627 A2 EP 0201627A2
Authority
EP
European Patent Office
Prior art keywords
plastic
dye
laser beam
sublimation dye
diffused
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
EP85112773A
Other languages
German (de)
English (en)
Other versions
EP0201627A3 (en
EP0201627B1 (fr
Inventor
Eckart Dr. Reese
Eckard Dipl.-Ing. Foltin
Hans Werner Depcik
Reiner Dipl.-Ing. Erkelenz
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.)
Bayer AG
Original Assignee
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
Family has litigation
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Application filed by Bayer AG filed Critical Bayer AG
Publication of EP0201627A2 publication Critical patent/EP0201627A2/fr
Publication of EP0201627A3 publication Critical patent/EP0201627A3/de
Application granted granted Critical
Publication of EP0201627B1 publication Critical patent/EP0201627B1/fr
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Classifications

    • 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

Definitions

  • the invention relates to a method for marking of plastics, by means of a dye bathträ- g ers is transferred to a plastic.
  • legible, easily readable inscriptions are often to be attached, which differ from case to case in the composition and size of the characters. This applies in particular to the keys of input units, e.g. Typewriters.
  • Transfer printing in which a carrier made of paper provided with a dye is pressed against the plastic by means of a hot pressure stamp with slight pressure, the dye being transferred to the surface.
  • the disadvantage of this method is that the action of the energy of the laser beam leads to irreversible reactions in the plastic, which are usually associated with significant changes in color.
  • the color change can only be set to a limited extent: this means that only a light font on a dark background or a dark font on a light background is possible.
  • the invention has for its object to provide an economical, flexible process for the inscription of plastics can be produced with sharp contours, abrasion-resistant character in any desired color and size on belie- bi g em background only by drawing or electronic constraint, wherein a Destruction of the plastic must not occur.
  • the object is achieved in that the subtimation dye is diffused via the gaseous phase into the respectively heated surface of the plastic via at least one laser beam which can be controlled according to the characters as a heat carrier.
  • laser beams with a wavelength ⁇ of 100-1500 nm, in particular of 1000-1500 nm have proven successful.
  • the power density should be 114-220 J / cm 2 , in particular 124-150 J / cm 2 , with an exposure time of 0.2-0.8 s / mm 2 , in particular 0.5-0.7 s / mm 2 .
  • the amount of diffusion depends on the current multiplied by the number of modes through speed.
  • the softening temperature of the plastic should be at least 30 ° C above the sublimation temperature of the dye.
  • the sublimation dye applied directly to the surface is diffused.
  • the sublimation dye is guided past the surface of the plastic on a carrier material.
  • the sublimation dye is brought to the place where the laser beam hits.
  • carrier material which can consist of paper, tissue or foil.
  • the sublimation dye is brought to the place where the laser beam hits.
  • a device with a step-wise continuous tape is advantageous for this, which is wound up from one spool before use and rewound on the next spool after signing.
  • the path opposite to the direction of propagation of the laser beam is blocked for the gaseous dye.
  • the gaseous phase of the sublimation dye can only migrate in the direction of the plastic to be labeled.
  • the sublimation dye is pressed onto the plastic directly over the carrier material.
  • the carrier material is pressed against the plastic via a transparent device which allows the laser beam to pass through almost unhindered.
  • a transparent PU body at wavelengths in the range of 1000 - 1500 nm, in which, for example, the Nd-YAG solid-state laser emits has practically no change when irradiating with a laser beam during the usual exposure time, it is possible to do this using fluid cushions Press the carrier material cleanly, the fluid being able to serve as an energy carrier, for example for preheating the dye and thus for faster entry into the gaseous phase.
  • the sublimation dye is passed in the gaseous phase to the area where the laser beam strikes at high speed with simultaneous compression.
  • An intensive effect can be achieved by adding dye in the gaseous phase at high speed and compression by funnel-shaped formation of the gas channel, the excess dye being sucked off again and again in order to be added to the cycle again.
  • the sublimation dye is diffused into thermoplastically processable, pourable or pressable plastics.
  • the process can be advantageous, among other things, for materials such as acrylonitrile butadiene styrene (Novodur ) Cellulose acetate (Cellidor ) - polyamides (Durethan ) Polycarbonate (Makrolon ), Polyester and polybutylene terephthalate (Pocan ) or a mixture of the polymers mentioned and preferably (PC / ABS blend (Bayblend ) PC / PBTP blend (macro blend ) and polyurethane as well as silicone rubbers are used.
  • PC / ABS blend Boyblend
  • PC / PBTP blend macro blend
  • silicone rubbers a mixture of the polymers mentioned and preferably
  • thermoplastic materials can be processed.
  • Thermal diffusion dyes and sublimation dyes are suitable as dyes.
  • a transfer printing paper printed with Resiren T, blue area is positioned on a typewriter key made of Novodur PH-AT (ABS) and arranged under the laser optics of an Nd-YAG solid-state laser.
  • a polyester film (Hostaphan RE 0.050 n) printed with black Resiren T, is positioned on a plastic housing made of Durethan BKV 30 and arranged under the laser optics of a Nd-YAG solid-state laser. A focused laser beam is generated ( ⁇ 1.06 ⁇ m) and (in a circle) guided over the film. After removing the film, the dye in the irradiated zone has penetrated the plastic.

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Printing Methods (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
EP85112773A 1985-05-14 1985-10-09 Procédé pour le marquage des matières macromoléculaires Expired - Lifetime EP0201627B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3517275 1985-05-14
DE19853517275 DE3517275A1 (de) 1985-05-14 1985-05-14 Verfahren zur beschriftung von kunststoffen

Publications (3)

Publication Number Publication Date
EP0201627A2 true EP0201627A2 (fr) 1986-11-20
EP0201627A3 EP0201627A3 (en) 1988-09-14
EP0201627B1 EP0201627B1 (fr) 1991-12-11

Family

ID=6270655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112773A Expired - Lifetime EP0201627B1 (fr) 1985-05-14 1985-10-09 Procédé pour le marquage des matières macromoléculaires

Country Status (5)

Country Link
EP (1) EP0201627B1 (fr)
JP (1) JPS61261093A (fr)
CA (1) CA1245448A (fr)
DE (2) DE3517275A1 (fr)
ES (1) ES8704808A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0265139A2 (fr) * 1986-10-15 1988-04-27 Polyplastics Co., Ltd. Article obtenu pour moulage imprimé par imprégnation
EP0605803A1 (fr) * 1992-12-12 1994-07-13 Hoechst Aktiengesellschaft Marquage en couleurs des surfaces en plastique par laser
EP0924096A1 (fr) * 1997-12-18 1999-06-23 Matsushita Electric Industrial Co., Ltd Procédé de marquage utilisant des rayons actiniques et produit moulé marqué par ce procédé
WO2005097514A1 (fr) * 2004-03-30 2005-10-20 Merck Patent Gmbh Scellement d'inscriptions plastiques
CN100496993C (zh) * 2004-03-30 2009-06-10 默克专利股份有限公司 将塑料永久和耐磨性地有色刻记和/或标记的方法以及由其获得的塑料
EP2392471A1 (fr) * 2009-01-27 2011-12-07 Shizuoka Prefecture Procédé de marquage au laser

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3817625A1 (de) * 1988-05-25 1989-11-30 Agfa Gevaert Ag Verfahren und vorrichtung zur herstellung einer thermokopie
DE4408927A1 (de) * 1994-03-16 1995-09-21 Licentia Gmbh Verfahren zum Aufbringen von graphischen Darstellungen und/oder Beschriftungen auf Legendenträger bzw. Blendeneinleger für Bedienungsblenden o. dgl.
GB2341579B (en) 1998-09-16 2003-04-16 Agra Vadeko Inc Apparatus and method of marking polymer-based laminates

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027532A1 (fr) * 1979-09-12 1981-04-29 Siemens Aktiengesellschaft Procédé pour la préparation de touches en matière plastique portant des signes différents
US4388387A (en) * 1979-03-26 1983-06-14 Fuji Photo Film Co., Ltd. Process for forming color images
EP0119548A2 (fr) * 1983-03-21 1984-09-26 Nortech Chemie GmbH & Co. KG Procédé pour l'impression d'un substrat par transfert

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1433025A (en) * 1972-06-29 1976-04-22 Sublistatic Holding Sa Reproducing a multi-coloured image
JPS50119660A (fr) * 1974-03-01 1975-09-19
JPS5343538A (en) * 1976-10-01 1978-04-19 Fujitsu Ltd Thermal sublimate ink ribbon
JPS55101489A (en) * 1979-01-30 1980-08-02 Fujitsu Ltd Recording method by thermal transfer
JPS55124672A (en) * 1979-03-22 1980-09-25 Fujitsu Ltd Printer
JPS55126479A (en) * 1979-03-23 1980-09-30 Fujitsu Ltd Printing method
JPS5682293A (en) * 1979-06-28 1981-07-04 Suzuki Sogyo Kk Printing method
JPS5646789A (en) * 1979-09-25 1981-04-28 Nec Corp Laser recording ribbon

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4388387A (en) * 1979-03-26 1983-06-14 Fuji Photo Film Co., Ltd. Process for forming color images
EP0027532A1 (fr) * 1979-09-12 1981-04-29 Siemens Aktiengesellschaft Procédé pour la préparation de touches en matière plastique portant des signes différents
EP0119548A2 (fr) * 1983-03-21 1984-09-26 Nortech Chemie GmbH & Co. KG Procédé pour l'impression d'un substrat par transfert

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0265139A2 (fr) * 1986-10-15 1988-04-27 Polyplastics Co., Ltd. Article obtenu pour moulage imprimé par imprégnation
EP0265139A3 (en) * 1986-10-15 1989-10-18 Polyplastics Co. Ltd. Impregnation-printed moulded article
EP0605803A1 (fr) * 1992-12-12 1994-07-13 Hoechst Aktiengesellschaft Marquage en couleurs des surfaces en plastique par laser
EP0924096A1 (fr) * 1997-12-18 1999-06-23 Matsushita Electric Industrial Co., Ltd Procédé de marquage utilisant des rayons actiniques et produit moulé marqué par ce procédé
US6245397B1 (en) 1997-12-18 2001-06-12 Matsushita Electric Industrial Co., Ltd. Marking method and marked molding
WO2005097514A1 (fr) * 2004-03-30 2005-10-20 Merck Patent Gmbh Scellement d'inscriptions plastiques
CN100496993C (zh) * 2004-03-30 2009-06-10 默克专利股份有限公司 将塑料永久和耐磨性地有色刻记和/或标记的方法以及由其获得的塑料
US8343412B2 (en) 2004-03-30 2013-01-01 Merck Patent Gmbh Sealing of inscriptions on plastics
EP2392471A1 (fr) * 2009-01-27 2011-12-07 Shizuoka Prefecture Procédé de marquage au laser
EP2392471A4 (fr) * 2009-01-27 2014-04-09 Shizuoka Prefecture Procédé de marquage au laser
US9415463B2 (en) 2009-01-27 2016-08-16 Shizuoka Prefecture Laser marking method

Also Published As

Publication number Publication date
EP0201627A3 (en) 1988-09-14
EP0201627B1 (fr) 1991-12-11
ES554916A0 (es) 1987-04-16
JPS61261093A (ja) 1986-11-19
DE3584892D1 (de) 1992-01-23
ES8704808A1 (es) 1987-04-16
DE3517275A1 (de) 1986-11-20
CA1245448A (fr) 1988-11-29
JPH0559838B2 (fr) 1993-09-01

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