EP2186574A1 - Uv-trocknungsverfahren zur reparatur von lackierfehlern in der kraftfahrzeugindustrie - Google Patents

Uv-trocknungsverfahren zur reparatur von lackierfehlern in der kraftfahrzeugindustrie Download PDF

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Publication number
EP2186574A1
EP2186574A1 EP08805360A EP08805360A EP2186574A1 EP 2186574 A1 EP2186574 A1 EP 2186574A1 EP 08805360 A EP08805360 A EP 08805360A EP 08805360 A EP08805360 A EP 08805360A EP 2186574 A1 EP2186574 A1 EP 2186574A1
Authority
EP
European Patent Office
Prior art keywords
repaired
drying
varnish
wavelength
drying method
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Withdrawn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
EP08805360A
Other languages
English (en)
French (fr)
Other versions
EP2186574A4 (de
Inventor
Cesar MIRÓ ESCARTÍ
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.)
Bulma Tecnologia SL
Original Assignee
Bulma Tecnologia SL
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 Bulma Tecnologia SL filed Critical Bulma Tecnologia SL
Publication of EP2186574A1 publication Critical patent/EP2186574A1/de
Publication of EP2186574A4 publication Critical patent/EP2186574A4/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/005—Repairing damaged coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/53—Base coat plus clear coat type
    • B05D7/536—Base coat plus clear coat type each layer being cured, at least partially, separately
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies

Definitions

  • the ultraviolet drying method for repairing paint defects in the automotive industry uses inside the production processes in chain of components of bodyworks in his painting phase by means of the use of a rapid drying for ultraviolet radiation object of the present invention.
  • the drying technology by radiation of ultraviolet light also called treatment or cured by UV, is already known and these are used in the field of the serigraphy and adhesives, layout designs of integrated circuits, medical applications in odontology for the products polymerization.
  • UV light also called treatment or cured by UV
  • the photoinitiator is a chemical reagent that causes the beginning from the polymerization to having been exhibited to the ultraviolet light.
  • German Patent DE 10309669 by VOLKSWAGEN AG (2004 ) that consists of a drying procedure for ultraviolet radiation of at least a layer of lacquer on a substratum where the lacquer layer contains at least a lacquer photoinitiated UV and where there is foreseen a step of previous drying along infrared radiation; as inventions that combine layers of varnish as the international Patent WO2005012816 by EISENMANN MASCHINENBAU ( 2005 ).
  • the North American patent US6528126 E.I. DU PONT OF NEMOURS a more detailed way, by game of intervals of radiation UV and radiation of infrared beams and range of the beams, the North American patent US6528126 E.I. DU PONT OF NEMOURS (2003).
  • the method or treatment of repair develops with the following phases: 1st). Detection of the defect . 2nd). Classification of the damage to turn off the piece (off line) or to repair on line (on line), 3rd) Preparation of the damaged surface . Dented damages leveling out,if necessary; 4th).
  • Simplified finishing touches procedures are known where without losing quality, there are obtained surfaces that are smooth and optically excellent with good resistance, satisfying the conventional requirements that are established with regard to the finishing touch of recoverings of vehicles, such as resistances to the dissolvers and to the alteration caused by the exhibition to the water and outdoors.
  • the ultraviolet radiation emitters can be located at a distance from 2 to 60 cm of the surface of the basic material to be radiated, and the ultraviolet radiation time can be, for example, from 5 seconds until 5 minutes.
  • the scale of wavelengths in nanometres, between 50 and 750 nm, and preferably between 50 and 650 nm.
  • the distance between the issuing focus and the object can be, for example, from 2 to 60 cm, allowing the irradiation on three-dimensional geometries.
  • the irradiation time can be, for example between 5 and 300 seconds. Referring to the duration of a continuous irradiation or to the sum of the periods of different cycles of irradiation. Looking between the different parameters for solutions so that we could avoid high superficial temperatures, as for example from 50 to 150 °C. Avoiding this way the harmful effects of the high temperatures, which prolong preferably the cooling stage for his polished later one of the retouched or repaired area.
  • the thicknesses of layer of recovering of the varnish of cured UV that are curable by means of ultraviolet radiation are applied in general in thicknesses of layer, in micrometers, from 10 to 1000 ⁇ m, and preferably from 10 to 250 ⁇ m.
  • the recovering film arranges more than a sole layer, being for example the application on a basic layer, to apply the layer or layers of transparent varnish for a later cured UV.
  • the recovering compositions can be watery or be diluted by a solvent or not to contain thinners does not even water down. In any solvent above mentioned case or water it must be eliminated during the ventilation phase.
  • the compositions to which the present invention is related have to be photo-initiated and hardened for UV.
  • the layers of recovering that comprise a defective area to be retouched can be considered to be habitual basic material formed by several layers, recovering of protection, cataphoresis, electrolysis, priming of putty and base layers, and in particular of the final layers of finished transparently to that the present invention shows.
  • This invention consists of three advantages, two functional ones and environmental other one.
  • the first one to functional effects with the use of the thicknesses previously mentioned in the diverse types of recovering achieves a drying in depth of the treated material, which provides a big power of adhesion of the varnish with the substratum or basic material, for the sake of the product quality, and of the procedures of technical standardization and industrial approval (UNE STANDARDS and ISO STANDARS RULES) in the sector of the automotive.
  • the second advantage focus on the type of weights and the used industrial process it facilitates his adequacy to the environmental regulations and of reduction of the Volatile Organic Compounds (VOC's), because it treats the motoring material with the use of solvents and volatile chemical compounds that are harmful to the environment ,and of a minor performance.
  • VOC's Volatile Organic Compounds
  • the third advantage and principal is the reduction of the time of drying and the possibility of being able to reach the phase of polished almost instantaneous, avoiding long periods of drying that allows the possibility of contaminations by dust or moisture.
  • the UV-rays reflectors or heads For a drying of printed putty, there get ready the UV-rays reflectors or heads at a distance between 500 mm of of the piece to repair with an emission of UV light covered between 350 and 450 nm of wavelength, obtaining a few times of drying covered between 50 seconds and 1 minute, from which the piece with putty drying can continue in his industrial process.
  • UV-rays reflectors or heads For a drying of UV varnish and dustcoat varnish, there get ready the UV-rays reflectors or heads at a distance between 300 mm of the piece to repair with an emission of UV light covered between 350 and 450 nm of wavelength, obtaining a few times of drying covered between 20 and 30 seconds minute, from which the varnished pieces can continue in his industrial process.
  • Figure. 1 1st) Finishing touch of the surface Priming or application of a basic putty, 2nd) Drying of the putty printed by UV beams, or by infrared beams, or for drying with air; 3rd) Sanded of the printed putty; 4th). Paint of the surface retouched and blurred of the area ; 5th) Drying of the painting by infrared beams or for drying with air ; 6th) Varnished of the surface repaired with UV varnish ; 7th) Varnished of the outline of the surface repaired with antifogging UV varnish; 8th) Ventilation of the varnish; 9th) Cured of the varnish layer using ultraviolet radiation; 10th) Cooling off area of repair (5-10 minutes); 11th). Polished of the repair area; and 12th). Restitution to area on line, or storage to area of repaired pieces.
  • the drying by ultraviolet radiation is performed by means of a few systems of UV-rays reflectors or heads arranged in the phases where it is operative between 100 mm and 1000 mm of distance to adapt itself to the three-dimensional shape of the piece to be repaired with an emission of UV light covered between 50 and 650 nm of wavelength.
  • the above mentioned wavelength will be able to be reached using steam lamps of mercury and/or gallium, obtaining a few times of drying covered between 5 and 300 seconds.
  • the phases where the drying can be operative for radiation are: the phase of Drying of the putty printed by UV beams, or by infrared beams (2nd phase), the phase of varnished of the surface repaired with UV varnish (6th phase), the phase of Varnished of the outline of the surface repaired with antifogging UV varnish (7th phase), and the phase of cured of the varnish layer using ultraviolet radiation (9th phase).
EP08805360A 2007-08-09 2008-07-30 Uv-trocknungsverfahren zur reparatur von lackierfehlern in der kraftfahrzeugindustrie Withdrawn EP2186574A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200702301A ES2326301B1 (es) 2007-08-09 2007-08-09 Procedimiento de reparacion de defectos de pintura en sector de la automocion por secado ultravioleta.
PCT/ES2008/000531 WO2009027554A1 (es) 2007-08-09 2008-07-30 Procedimiento de reparación de defectos de pintura en sector de la automoción por secado ultravioleta

Publications (2)

Publication Number Publication Date
EP2186574A1 true EP2186574A1 (de) 2010-05-19
EP2186574A4 EP2186574A4 (de) 2012-01-04

Family

ID=40386720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08805360A Withdrawn EP2186574A4 (de) 2007-08-09 2008-07-30 Uv-trocknungsverfahren zur reparatur von lackierfehlern in der kraftfahrzeugindustrie

Country Status (3)

Country Link
EP (1) EP2186574A4 (de)
ES (1) ES2326301B1 (de)
WO (1) WO2009027554A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818735A1 (de) * 1998-04-27 1999-10-28 Herberts Gmbh Strahlungshärtbare Beschichtungsmittel und deren Verwendung
US20020182330A1 (en) * 2001-06-04 2002-12-05 Morenike Awokola Process for multilayer coating of substrates
US20070116866A1 (en) * 2005-11-18 2007-05-24 Basf Corporation Quick method for repairing damage to a finish on a substrate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2310716C (en) * 1997-11-20 2007-05-22 Karin Maag Method for multi-layered coating of substrates
DE19857940C1 (de) 1998-12-16 2000-07-27 Herberts Gmbh Verfahren zur Mehrschichtlackierung mit strahlenhärtbaren Beschichtungsmitteln
US6958171B2 (en) 2001-12-14 2005-10-25 E. I. Du Pont De Nemours And Company Process for repairing coated substrate surfaces
DE10309669A1 (de) 2003-03-06 2004-09-16 Volkswagen Ag Verfahren zur Trocknung wenigstens einer Lackschicht auf einem Substrat
EP1651917B1 (de) 2003-07-24 2012-03-21 Eisenmann AG Vorrichtung zur aushärtung einer aus einem material, das unter elektromagnetischer strahlung aushärtet, insbesondere aus einem uv-lack, oder aus einem thermisch aushärtenden lack, bestehenden beschichtung eines gegenstandes
US7491419B2 (en) * 2005-01-26 2009-02-17 Ei Du Pont De Nemours & Company Process for vehicle repair coating

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818735A1 (de) * 1998-04-27 1999-10-28 Herberts Gmbh Strahlungshärtbare Beschichtungsmittel und deren Verwendung
US20020182330A1 (en) * 2001-06-04 2002-12-05 Morenike Awokola Process for multilayer coating of substrates
US20070116866A1 (en) * 2005-11-18 2007-05-24 Basf Corporation Quick method for repairing damage to a finish on a substrate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2009027554A1 *

Also Published As

Publication number Publication date
ES2326301B1 (es) 2010-06-29
WO2009027554A1 (es) 2009-03-05
WO2009027554A4 (es) 2009-04-30
ES2326301A1 (es) 2009-10-06
EP2186574A4 (de) 2012-01-04

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