EP0263757A2 - Verfahren und Vorrichtung zum Aufbringen einer Appretur oder "sealer" eines programmierten Farbtons auf eine Unterlage, insbesondere Fahrzeugkarosserie, die eine Mischung einer neutralen Base der Appretur und eine pigmentierte Paste im Moment des Auftragens enthält - Google Patents

Verfahren und Vorrichtung zum Aufbringen einer Appretur oder "sealer" eines programmierten Farbtons auf eine Unterlage, insbesondere Fahrzeugkarosserie, die eine Mischung einer neutralen Base der Appretur und eine pigmentierte Paste im Moment des Auftragens enthält Download PDF

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Publication number
EP0263757A2
EP0263757A2 EP87402210A EP87402210A EP0263757A2 EP 0263757 A2 EP0263757 A2 EP 0263757A2 EP 87402210 A EP87402210 A EP 87402210A EP 87402210 A EP87402210 A EP 87402210A EP 0263757 A2 EP0263757 A2 EP 0263757A2
Authority
EP
European Patent Office
Prior art keywords
primer
neutral
base
deposition
pigmented
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Withdrawn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
EP87402210A
Other languages
English (en)
French (fr)
Other versions
EP0263757A3 (de
Inventor
Daniel Guyomard
Gérard Torrez
Jean-Michel Lambour
Claude Arriveau
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.)
GUYOMARD Daniel
Original Assignee
BASF Peintures and Encres SA
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 BASF Peintures and Encres SA filed Critical BASF Peintures and Encres SA
Publication of EP0263757A2 publication Critical patent/EP0263757A2/de
Publication of EP0263757A3 publication Critical patent/EP0263757A3/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Withdrawn legal-status Critical Current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
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member
    • B05B3/1035—Driving means; Parts thereof, e.g. turbine, shaft, bearings
    • B05B3/1042—Means for connecting, e.g. reversibly, the rotating spray member to its driving shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member
    • B05B3/1057—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member with at least two outlets, other than gas and cleaning fluid outlets, for discharging, selectively or not, different or identical liquids or other fluent materials on the rotating element
    • 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
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0403—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member
    • B05B5/0407—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
    • 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
    • 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
    • B05D1/34—Applying different liquids or other fluent materials simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/003—Methods or devices for colour determination, selection or synthesis, e.g. use of colour tables

Definitions

  • the invention essentially relates to a method and an apparatus for depositing a primer or "Sealer" of programmed shade on any object, in particular a motor vehicle bodywork, comprising the mixture of a neutral primer base and one or more pigmented pastes at the time of its deposition on said object.
  • electrostatic projection devices which may include a bowl-shaped rotating head system. Such devices can be coupled to an automatic shade changer. This set then allows the complete unit to change the colors of the vehicles.
  • finishing color in the majority of cases a primer still called “Sealer” is generally applied, of single gray color.
  • the gray primer is not satisfactory and thus contributes to significantly increasing the recycling rate for defects.
  • the present invention therefore aims to solve the new technical problem consisting in the supply of a solution making it possible to simplify the technology of the primers thanks to the use of a single priming requiring a single main circulating which can be adapted on the site to willingness to an appropriate primer shade depending on the particular finish shade.
  • Another object of the invention is to solve the additional technical problem consisting in limiting product losses linked to the purging operations during color changes. If we used color changers such as those known for finishes.
  • Another object of the present invention is to solve the technical problem consisting in providing a method and an apparatus making it possible to reduce investment costs as much as possible.
  • the present invention provides a method for depositing a primer or "Sealer" of programmed shade on any object, in particular a bodywork of a motor vehicle, characterized in that the first preparation is , on the one hand a neutral base of primer and on the other hand at least a mono or polypigmented paste; and mixing said neutral primer base and said pigmented paste to form said primer when it is deposited on said object.
  • the dosage of the pigmented paste is carried out which determines the shade of the desired finish.
  • said process according to the invention is characterized in that said neutral base and said pigmented paste are brought independently to the level of the device spraying so as to produce the aforementioned mixture simultaneously with the spraying or spraying.
  • the invention also relates, according to a second aspect, to an apparatus for depositing a programmed color finish on any object, in particular a motor vehicle body, comprising means allowing the deposit of the finish on said object, characterized in that it comprises first means for bringing a neutral base of primer to said means for depositing primer advantageously from a circulating of neutral base linked to a neutral base reserve; and second means for supplying pigmented paste to said means for depositing primer, independent of said first means for depositing primer, connected to a reserve of pigmented paste; said first means and second means cooperating with the deposition means so as to ensure mixing of the neutral base with the pigmented paste.
  • this device comprises an electrostatic deposition device, generally having the shape of a bowl, which is advantageously made to rotate.
  • the independent supply of the neutral primer base and of the pigmented paste independently opens substantially in the vicinity of the projecting surface of the bowl, according to a first embodiment, currently preferred.
  • the pigmented pastes are prepared in several shades and are delivered selectively from a dispensing means comprising as many lines as there are shades.
  • tinted Sealers it is possible to work in a single layer on interiors, moreover, the rate of reject linked to the lack of covering on the edges is significantly reduced.
  • bowl feed circuits having injection port sections in a fixed ratio of, for example, between 1 and 10, the metering accuracy is satisfactory and this device makes it possible to dispense with a more sophisticated and therefore more expensive system. such as metering pump devices.
  • the first step in implementing the method of the invention consists in selecting the tinted Sealer colors.
  • T is the Tone - value between 0 and 999 describing on a circle the whole range of hues of the spectrum
  • C is Clarity - value between 0 and 99 illustrating the whiteness level on a vertical axis crossing the circle in its center
  • the barycenter standardized in TCP value, will be the most favorable Sealer shade to receive a given set of finish shades since it is at the center of this dispersion.
  • a computerized Color database makes it possible to physically identify the shade if necessary. From these TCP values and using a computerized color formulation program, it is possible to determine the pigment composition best suited for use in an automotive sealer.
  • TCP values are given as an example, any other known color classification system could also be used: Lab, Lab *, XYZ, etc. It is also possible to move the barycenter to take account of the specific problems of certain colors making up the group, in particular their own opacifying power, their popularity, their recycling rate for which these colors are responsible.
  • This operation also makes it possible to fix the number and the color of the tinted Sealers to be used.
  • an apparatus for depositing a programmed tint finish on any object comprises means represented by the general reference number 1 allowing the deposit of the primer on the object.
  • this device comprises first means 2 for supplying a neutral primer base by means of primer deposit, from a circulator (not shown) of neutral base connected to a reserve of neutral base (also not shown), and second means 4 for supplying pigmented paste, independent of the first means 2, connected to a reserve of pigmented paste (not shown), the first means 2 and the second means 4 cooperating with the deposition means 1 so as to ensure the mixing of the neutral base with the pigmented paste in an appropriate manner, equivalent to a conventional prior preparation of a primer of predetermined shade.
  • the deposition apparatus is constituted by an electrostatic deposition apparatus comprising a rotating bowl 6 rotatably mounted on a drive shaft 8 driven in rotation by conventional means , well known to those skilled in the art. More specifically, the rotating bowl 6 comprises a central portion 10 fixed to the rotating shaft 8 and a peripheral envelope 12 of substantially frustoconical shape protruding on either side of the central portion 10 which has an apparent surface 14 in the form of a disc. substantially planar. At the junction of the central part 10 and the peripheral part 12, one or more orifices 16, 18 are provided allowing passage of the primer in the vicinity of the internal surface 20 of the envelope 12, and which constitutes the projection surface of the rotating bowl.
  • first means 2 and the second means 4 respectively comprise a first conduit 5 and a second conduit 7 terminating in the receiving cavity 22 defined between the rear frustoconical part 12a of the envelope 12 and the central part 10 of the bowl turning 6.
  • conduit 5 intended to bring the neutral primer base is of a larger cross section than the conduit 7 intended to bring the pigmented paste, due to the differences in flow rate, the pigmented paste generally constituting only approximately the tenth and the neutral base nine-tenths of the primer.
  • the conduits 5 and 7 open into the cavity 22 through a calibrated orifice 24, 26 respectively.
  • injection devices 28, 30 are provided respectively allowing an unlimited, programmable dosage of the neutral base and above all pigmented paste.
  • the invention is particularly suitable for deposition of the electrostatic type, although other deposition techniques can be used without limitation.
  • FIG. 2 there is shown an alternative embodiment for axial injection.
  • the same reference numbers as those in FIG. 1 were used, increased by 100 to designate the parts of identical function.
  • the mixing of the neutral base and the pigment paste takes place at the rear of the rotating bowl 106, the independent conduits of neutral base of primer 105 and of pigment paste 107 ending in a common axial conduit 109 opening out inside the rotating bowl 106, which makes it possible to show that the invention is not limited to a particular mixing mode, but that on the contrary a large number of variant embodiments is possible.
  • the invention includes all the means constituting technical equivalents of the means described as well as their various combinations.
  • Static mixers (knuckle tube for example) or dynamic mixers (mixing turbine for example) can be placed upstream of the head of the projector but practical tests have demonstrated their uselessness.
  • neutral primer base denote in particular a substantially neutral color base obtained with the use of a zero or small amount of pigments but which may contain a very large amount of fillers which do not have no clouding power, like talc, kaolin, baryte sulfate, etc.
  • fillers make it possible to achieve identical or similar pigment volume concentration values between the so-called neutral base of primer and the pigmented paste.
  • the two components of the sealer are formulated with identical resin scales, which results in a great compatibility of the two components allowing an easy and rapid mixing and the constant maintenance of all the properties of the final product even in case variations in dosage ratios.
  • a cosmetic gravel test was carried out and evaluated by spectrophotocolorimetric measurement.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
  • Electrostatic Spraying Apparatus (AREA)
EP87402210A 1986-10-06 1987-10-06 Verfahren und Vorrichtung zum Aufbringen einer Appretur oder "sealer" eines programmierten Farbtons auf eine Unterlage, insbesondere Fahrzeugkarosserie, die eine Mischung einer neutralen Base der Appretur und eine pigmentierte Paste im Moment des Auftragens enthält Withdrawn EP0263757A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8613892A FR2606297B1 (fr) 1986-10-06 1986-10-06 Procede et appareil pour le depot d'un appret ou " sealer " de teinte programmee sur un objet quelconque, en particulier une carrosserie de vehicule automobile, comportant le melange d'une base neutre d'appret et d'une pate pigmentee au moment de son depot sur ledit objet
FR8613892 1986-10-06

Publications (2)

Publication Number Publication Date
EP0263757A2 true EP0263757A2 (de) 1988-04-13
EP0263757A3 EP0263757A3 (de) 1988-12-21

Family

ID=9339578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402210A Withdrawn EP0263757A3 (de) 1986-10-06 1987-10-06 Verfahren und Vorrichtung zum Aufbringen einer Appretur oder "sealer" eines programmierten Farbtons auf eine Unterlage, insbesondere Fahrzeugkarosserie, die eine Mischung einer neutralen Base der Appretur und eine pigmentierte Paste im Moment des Auftragens enthält

Country Status (7)

Country Link
US (1) US4876111A (de)
EP (1) EP0263757A3 (de)
JP (1) JPS6485156A (de)
CA (1) CA1273852A (de)
DE (1) DE263757T1 (de)
ES (1) ES2002711A4 (de)
FR (1) FR2606297B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0652053A3 (de) * 1993-10-29 1995-08-09 Nordson Corp Verfahren und Vorrichtung zum Aufbringen von Haftgrundmaterialien auf Glaselementen von Kraftfahrzeugen.
EP0719623A3 (de) * 1994-12-27 1996-12-27 Dow Corning Verfahren und Vorrichtung zur Farbabstimmung von Silikondichtungsmassen

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5700515A (en) * 1996-05-13 1997-12-23 E. I. Du Pont De Nemours And Company Optimizing gray primer in multilayer coatings
US6238746B1 (en) * 1998-08-27 2001-05-29 Honda Giken Kogyo Kabushiki Kaisha Method of and apparatus for painting vehicle bodies with various color paints
EP1232019A2 (de) * 1999-11-15 2002-08-21 PPG Industries Ohio, Inc. Verfahren und vorrichtung zum aufbringen einer polychromatischen beschichtung auf einem substrat
BR112015007367B1 (pt) * 2012-10-01 2021-01-19 Nissan Motor Co., Ltd. copo sino para aparelho de revestimento eletrostático atomizador rotativo
US9616442B2 (en) 2013-06-22 2017-04-11 KSi Conveyor, Inc. Rotating disk atomizer with treatment fluid feed arrangement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH347743A (de) * 1957-03-07 1960-07-15 A Landolt Ag Dr Lackierverfahren im elektrostatischen Feld für Mehrkomponentenlacke
US3411715A (en) * 1964-03-31 1968-11-19 Wallis Neil Rudolph Centrifugal electrostatic spraying head
US3670785A (en) * 1970-07-02 1972-06-20 Valspar Corp Method and apparatus for tinting paint
DE3135721C3 (de) * 1981-09-09 1991-04-18 Ransburg Gmbh Verfahren und anlage zum verspruehen von farben
IT1161054B (it) * 1983-02-08 1987-03-11 Giordano Arrigoni Perfezionamenti ai complessi (assemblies) di alimentazione e dosaggio variabile e selettivo di colori variamente pigmentati e/o miscelati, per la preparazione di coloranti in genere, e relativi complessi di alimentazione e dosaggio perfezionati
AU572887B2 (en) * 1983-11-28 1988-05-19 Basf Corporation Colour tinted clear coat coating system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0652053A3 (de) * 1993-10-29 1995-08-09 Nordson Corp Verfahren und Vorrichtung zum Aufbringen von Haftgrundmaterialien auf Glaselementen von Kraftfahrzeugen.
EP0719623A3 (de) * 1994-12-27 1996-12-27 Dow Corning Verfahren und Vorrichtung zur Farbabstimmung von Silikondichtungsmassen

Also Published As

Publication number Publication date
FR2606297A1 (fr) 1988-05-13
DE263757T1 (de) 1988-11-03
US4876111A (en) 1989-10-24
JPS6485156A (en) 1989-03-30
EP0263757A3 (de) 1988-12-21
FR2606297B1 (fr) 1989-06-30
CA1273852A (en) 1990-09-11
ES2002711A4 (es) 1988-10-01

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