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EP0139274A1 - Procédé et appareil pour l'application d'une couche de laque en deux ou plusieurs couleurs - Google Patents

Procédé et appareil pour l'application d'une couche de laque en deux ou plusieurs couleurs Download PDF

Info

Publication number
EP0139274A1
EP0139274A1 EP84112025A EP84112025A EP0139274A1 EP 0139274 A1 EP0139274 A1 EP 0139274A1 EP 84112025 A EP84112025 A EP 84112025A EP 84112025 A EP84112025 A EP 84112025A EP 0139274 A1 EP0139274 A1 EP 0139274A1
Authority
EP
European Patent Office
Prior art keywords
substrate
spray
colored
paint
baking
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
EP84112025A
Other languages
German (de)
English (en)
Other versions
EP0139274B1 (fr
Inventor
Roland Dipl.-Ing. Meisner
Hans Dipl.-Ing. Pollinger
Bernd Dipl.-Ing. Krüger
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.)
Audi AG
BASF Farben und Fasern AG
Original Assignee
Audi NSU Auto Union AG
Audi AG
BASF Farben und Fasern AG
BASF Lacke und Farben 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 Audi NSU Auto Union AG, Audi AG, BASF Farben und Fasern AG, BASF Lacke und Farben AG filed Critical Audi NSU Auto Union AG
Priority to AT84112025T priority Critical patent/ATE28413T1/de
Publication of EP0139274A1 publication Critical patent/EP0139274A1/fr
Application granted granted Critical
Publication of EP0139274B1 publication Critical patent/EP0139274B1/fr
Expired 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
    • 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
    • B05D7/54—No clear coat specified
    • B05D7/542—No clear coat specified the two layers being cured or baked together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/0255—Discharge apparatus, e.g. electrostatic spray guns spraying and depositing by electrostatic forces only
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
    • 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
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects

Definitions

  • the invention relates to a method for producing two-color or multi-color paints according to the preamble of the main claim.
  • the invention relates to an apparatus for performing the method.
  • the procedure is usually that the substrate is coated with a first color, the lacquer applied is dried and baked and then the surface coated with this color is covered, whereupon the uncovered surfaces are covered with a second or further varnish (see textbook for vehicle painters, Verlag Neuer Merkur GmbH, Kunststoff, 1st edition, 1981, page 19o).
  • This procedure is time and energy consuming because of the drying or baking required between the application of two lacquers. Otherwise, there is a large amount of varnish in the coverage area.
  • the invention has for its object to provide a method and an apparatus for a multi-colored coating, wherein all differently colored painted surfaces are relatively sharply delimited from one another and thus meet the requirements of a decorative surface without intermediate drying or baking is necessary and wherein Furthermore, the area of coverage between the individual color tone limits can be kept low.
  • the substrate is coated with the first lacquer or color in a manner known per se, for example by spraying applications, with the aid of pneumatic atomizers or centrifugal atomizers in the electrostatic field.
  • the usually differently colored second or any other lacquer which is generally differently colored, is applied by an atomizer, which works with electrostatic transport of the colored particles and which imprints an impulse on the lacquer droplets at the color tone limits is almost parallel to the surface normal of the substrate present there.
  • an electrostatically operating device is proposed as the atomizer, which has stationary atomizer edges and a transport of the paint particles in the electrical system Field works.
  • Claim 2 identifies a variant of the method according to the invention, in which the spray pattern can be controlled.
  • Claim 3 describes a development in which the spray pattern can even be changed during the spraying process itself.
  • a device for performing the method according to the invention is described by claim 4.
  • An essential feature is that the spray gap formed by the atomizing edges is essentially perpendicular to the surface normal of the substrate with its longitudinal axis, that is to say the longitudinal axis of the gap runs parallel to the substrate.
  • the spray spatula is oriented such that it is essentially perpendicular to the plane which is spanned by the surface normal in the area of the color tone limits and by the direction of movement of the substrate.
  • This unusual arrangement of the spray organ ensures that the paint reaches the color limits droplet is electrostatically impressed, which is subsequently parallel to the surface normals there, whereby the sharp delimitation of the applied varnish is achieved in the area of the color tone limit.
  • auxiliary electrodes which can be adjusted, preferably automatically adjusted and which limit the effective length of the spray gap, are provided in the direction of the longitudinal axis of the spray gap in front of the spray gap. These auxiliary electrodes allow the width of the applied coating tape to be regulated and, if these auxiliary electrodes are opened and closed during the painting process, contours of the coating tape can be achieved in the simplest way or adjustments to the surface shapes of the substrate without the need for additional tools.
  • a particular field of application of the invention results in the two-color painting of car bodies, in which, according to the invention, both colors can be applied wet on wet.
  • the narrow border area that can be achieved by the method according to the invention between the differently colored areas can be determined by components such as e.g. a crash protection bar, cover. This eliminates the need for the previous intermediate step of baking the first coat of paint before applying the second color.
  • the advantages are shorter cycle times and lower energy consumption per painting of a body. The space requirement is also reduced.
  • Fig. 1 denotes a spray element which is connected to high voltage and thus enables electrostatic atomization of the liquid paint supplied, namely at stationary atomizer edges which define a spray gap 9 (FIG. 2).
  • a substrate 2 e.g. an automobile body, lies on earth and is coated with a first layer of paint 3.
  • the second lacquer layer to be applied by the spray element 1, which preferably has a different color, is designated by 4.
  • Motor-adjustable auxiliary electrodes 5 can be arranged in front of the spray gap 9, which are adjustable, for example, in the direction of the longitudinal axis x-x and thereby limit the effective length of the spray gap 9.
  • the hue boundaries are indicated schematically with 1o and with 11 the surface normals standing on the hue boundaries.
  • the first lacquer layer 3 can be applied by methods which are usually used today application of lacquer layers on substrates. A sharp delimitation of the first lacquer layer 3 to the subsequent lacquer layer 4 is not necessary and cannot be achieved with the methods customary today. 1 that the transition region of the first lacquer layer 3 can extend over the surface to be coated with the second lacquer layer 4.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Road Signs Or Road Markings (AREA)
EP84112025A 1983-10-12 1984-10-08 Procédé et appareil pour l'application d'une couche de laque en deux ou plusieurs couleurs Expired EP0139274B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84112025T ATE28413T1 (de) 1983-10-12 1984-10-08 Verfahren und vorrichtung zur herstellung einer zwei- oder mehrfarbigen lackierung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3337028 1983-10-12
DE3337028 1983-10-12
DE3435937A DE3435937C2 (de) 1983-10-12 1984-09-29 Verfahren und Vorrichtung zur Herstellung einer zwei- oder mehrfarbigen Lackierung sowie ihre Anwendung
DE3435937 1984-09-29

Publications (2)

Publication Number Publication Date
EP0139274A1 true EP0139274A1 (fr) 1985-05-02
EP0139274B1 EP0139274B1 (fr) 1987-07-22

Family

ID=25814778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112025A Expired EP0139274B1 (fr) 1983-10-12 1984-10-08 Procédé et appareil pour l'application d'une couche de laque en deux ou plusieurs couleurs

Country Status (6)

Country Link
US (1) US4740384A (fr)
EP (1) EP0139274B1 (fr)
AT (1) ATE28413T1 (fr)
DE (2) DE3435937C2 (fr)
ES (1) ES8603768A1 (fr)
WO (1) WO1985001678A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443616B1 (fr) * 1990-02-23 1998-09-16 Fuji Photo Film Co., Ltd. Procédé de revêtement multicouche
DE4213699C1 (en) * 1992-04-25 1993-09-02 Mercedes-Benz Aktiengesellschaft, 70327 Stuttgart, De Component with multicoloured surface - has two different coloured areas sepd. by flange projecting from component surface and which is later removed
US5683756A (en) * 1996-02-23 1997-11-04 Batesville Casket Company, Inc. Gold plating process for zinc substrates
US5976634A (en) * 1996-02-23 1999-11-02 Batesville Casket Company, Inc. Gold plating process for plastic substrates
AU1778000A (en) * 1998-11-27 2000-06-19 Metallveredlung Gmbh & Co. Kg Coat consisting of a plastic coating and method and device for producing the same
DE10028705B4 (de) * 2000-06-09 2004-04-08 Audi Ag Verfahren zur Herstellung eines mit mindestens zwei unterschiedlichen Lacken beschichteten Karosserieelementes eines Kraftfahrzeugs
US6376016B1 (en) * 2000-06-14 2002-04-23 Ford Global Tech., Inc. Method for painting a vehicle with at least two colors
WO2002000357A1 (fr) * 2000-06-26 2002-01-03 Abb K.K. Procede d'application d'un revetement bicolore
US6532617B2 (en) 2001-04-26 2003-03-18 Plaid Enterprises, Inc. Device for loading and maintaining two separate colors of paint on a paintbrush and method of using same
US7592040B2 (en) * 2005-02-23 2009-09-22 Ppg Industries Ohio, Inc. Two-tone color effect coating process
DE102011013307A1 (de) * 2011-03-07 2012-09-13 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Vorrichtung und Verfahren zum Applizieren von Lacken
DE102013002433A1 (de) 2013-02-11 2014-08-14 Dürr Systems GmbH Lackierverfahren und Lackieranlage für Zierstreifen
DE102019206058B3 (de) 2019-04-29 2020-04-23 Audi Ag Verfahren zur Erzeugung einer mehrfarbigen Effektlackierung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3513012A (en) * 1963-03-28 1970-05-19 Sames Sa De Machines Electrost Multilayer coating process
DE2213862A1 (de) * 1972-03-22 1973-10-11 Metallgesellschaft Ag Verfahren zum korrosionsschutz von metallgegenstaenden
DE2740246A1 (de) * 1976-09-08 1978-03-09 Bolan R Amar Verfahren zum aufbringen einer farbschicht auf eine traegeroberflaeche
DE2746502A1 (de) * 1976-11-24 1978-06-01 Takamichi Uemuro Farbspritzverfahren unter scharf abgesetzter begrenzung zwischen zu malenden und nicht zu malenden flaechen, und klebeband zur durchfuehrung des verfahrens
GB1558464A (en) * 1975-07-29 1980-01-03 Metal Box Co Ltd Method and apparatus for providing flame cured coatings

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE723496C (de) * 1940-03-15 1942-08-06 Kali Chemie Ag Herstellung von Alkalialuminat aus Tonerdesulfat und Alkalichlorid
US2780565A (en) * 1953-07-17 1957-02-05 Ransburg Electro Coating Corp Electrostatic spray coating system and method
US3054697A (en) * 1960-02-29 1962-09-18 Ford Motor Co Electrostatic painting
US3596275A (en) * 1964-03-25 1971-07-27 Richard G Sweet Fluid droplet recorder
US3413917A (en) * 1966-11-16 1968-12-03 Purex Corp Ltd Electrostatic printing with means to change polarity of counter electrode
US3486483A (en) * 1968-08-23 1969-12-30 Richard Tilney Electrostatic spray coating apparatus
GB1284755A (en) * 1968-09-30 1972-08-09 Celanese Coatings Co Process for coating surfaces and compositions for use therein
US3714928A (en) * 1970-11-17 1973-02-06 Mead Corp Multiple jet channel
US4551491A (en) * 1983-07-29 1985-11-05 Inmont Corporation Pearlescent automotive paint compositions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3513012A (en) * 1963-03-28 1970-05-19 Sames Sa De Machines Electrost Multilayer coating process
DE2213862A1 (de) * 1972-03-22 1973-10-11 Metallgesellschaft Ag Verfahren zum korrosionsschutz von metallgegenstaenden
GB1558464A (en) * 1975-07-29 1980-01-03 Metal Box Co Ltd Method and apparatus for providing flame cured coatings
DE2740246A1 (de) * 1976-09-08 1978-03-09 Bolan R Amar Verfahren zum aufbringen einer farbschicht auf eine traegeroberflaeche
DE2746502A1 (de) * 1976-11-24 1978-06-01 Takamichi Uemuro Farbspritzverfahren unter scharf abgesetzter begrenzung zwischen zu malenden und nicht zu malenden flaechen, und klebeband zur durchfuehrung des verfahrens

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
VDI-ZEITSCHRIFT, Band 117, Nr. 23, Dezember 1975, Seiten 1155-1166, VDI-Verlag, Düsseldorf, DE; S. LOHMEYER: "Lackierverfahren für grossflächige Blechteile" *

Also Published As

Publication number Publication date
US4740384A (en) 1988-04-26
DE3435937C2 (de) 1986-01-02
EP0139274B1 (fr) 1987-07-22
DE3464858D1 (en) 1987-08-27
DE3435937A1 (de) 1985-05-02
ES536732A0 (es) 1986-01-01
WO1985001678A1 (fr) 1985-04-25
ATE28413T1 (de) 1987-08-15
ES8603768A1 (es) 1986-01-01

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