EP0257079A1 - Verfahren zum überziehen von gegenständen und dazu gehörende haltevorrichtung - Google Patents

Verfahren zum überziehen von gegenständen und dazu gehörende haltevorrichtung

Info

Publication number
EP0257079A1
EP0257079A1 EP19870901498 EP87901498A EP0257079A1 EP 0257079 A1 EP0257079 A1 EP 0257079A1 EP 19870901498 EP19870901498 EP 19870901498 EP 87901498 A EP87901498 A EP 87901498A EP 0257079 A1 EP0257079 A1 EP 0257079A1
Authority
EP
European Patent Office
Prior art keywords
paint
objects
support
supports
painting
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Withdrawn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
EP19870901498
Other languages
English (en)
French (fr)
Inventor
Maurice Gardent
Jacques Nicolas
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP0257079A1 publication Critical patent/EP0257079A1/de
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • B05D3/04—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 gases
    • B05D3/0466—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 gases the gas being a non-reacting gas
    • B05D3/048—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 gases the gas being a non-reacting gas for cooling
    • 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
    • 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
    • B44D3/16—Implements or apparatus for removing dry paint from surfaces, e.g. by scraping, by burning
    • 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
    • B05D2350/00—Pretreatment of the substrate
    • B05D2350/60—Adding a layer before coating
    • B05D2350/65—Adding a layer before coating metal layer

Definitions

  • the present invention relates to a method for painting objects carried by supports, of the type in which, after one or more painting cycles, each support is cooled by a cryogenic fluid and then subjected to a mechanical action of removing the paint that has accumulated there.
  • the objects to be painted are carried by supports, which are for example hooks, swings, carts, etc., and successively undergo a painting cycle comprising in particular a step of depositing the paint and a step of drying / baking the deposited paint.
  • the supports are then recycled to receive new objects to paint.
  • the supports of the objects also undergo, at least in part, the painting cycle.
  • the painting cycle As a result, with each cycle, an additional layer of paint builds up there. It is therefore necessary to clean them periodically.
  • the object of the invention is to provide a method eliminating both the need for prolonged peening and the risk of oxidation of the supports, while being compatible with the constraints imposed by electrostatic painting processes.
  • the subject of the invention is a method of the aforementioned type, characterized in that the objects are carried by supports coated with a thin layer of an electroconductive and anti-corrosion product to which the paint adheres less than on the material of the support, this product being resistant to cryogenic temperatures and to the entire temperature range of the paint cycle.
  • the thin layer may in particular comprise a metallic coating, in particular of zinc.
  • a precoat of paint is also deposited on said thin layer. before the objects are carried by their supports.
  • the invention also relates to a support for objects to be painted intended for the implementation of the method defined above.
  • This support is characterized in that it is coated with a thin layer of an electroconductive and anti-corrosion product on which the paint adheres less than on the material of the support, this product being resistant to cryogenic temperatures and to the whole range. of the paint cycle temperature.
  • Automobile bodies are intended to be painted. They are suspended on galvanized swings, carrying a zinc coating of thickness approximately 50 to 60 microns, that is to say approximately 600 grams of zinc per square meter of surface. This zinc coating is obtained by dipping the steel swings in a bath of molten zinc; alternatively, we could also electroplate zinc swings. The galvanized swings thus loaded are transferred to the painting station. When the painting cycle is finished, the body is detached from the swing, and the latter is recycled to receive another body to paint.
  • each swing After a certain number of painting cycles, each swing has a thick layer of paint, and it must be cleaned. For this, it is cooled by a cryogenic fluid, in particular liquid nitrogen, to a cryogenic temperature at which the paint is weakened, then it is subjected to shocks, for example by means of shot, brushes or chains.
  • a cryogenic fluid in particular liquid nitrogen
  • Automobile bodies must undergo successively a galvanizing treatment (anti-corrosion), a phosphating treatment (to improve the adhesion of the paint) and then a paint cycle.
  • a galvanizing treatment anti-corrosion
  • a phosphating treatment to improve the adhesion of the paint
  • a paint cycle we deposit on the galvanized swings a pre-coat of paint, then the bodies are hung there and galvanizing, phosphating and then painting the bodies.
  • the paint pre-coat is used, as in Example 2, to maintain the non-stick effect of the galvanization of the swings, and, here again, such a pre-coat must be deposited on the swings after each cryopainting operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Spray Control Apparatus (AREA)
EP19870901498 1986-03-04 1987-02-17 Verfahren zum überziehen von gegenständen und dazu gehörende haltevorrichtung Withdrawn EP0257079A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR86400440 1986-03-04
EP86400440 1986-03-04

Publications (1)

Publication Number Publication Date
EP0257079A1 true EP0257079A1 (de) 1988-03-02

Family

ID=8196282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870901498 Withdrawn EP0257079A1 (de) 1986-03-04 1987-02-17 Verfahren zum überziehen von gegenständen und dazu gehörende haltevorrichtung

Country Status (4)

Country Link
EP (1) EP0257079A1 (de)
JP (1) JPS63502567A (de)
ES (1) ES2004252A6 (de)
WO (1) WO1987005236A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60213060T2 (de) * 2002-03-21 2007-02-08 Bagetti Verfahren zum Herstellen und Aufbringen von einer Schutzüberzugszusammensetzung, sowie damit beschichtete Artikel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674445A (en) * 1968-05-13 1972-07-04 Jones & Laughlin Steel Corp Vapor deposited zinc coated metallic substrates having organic coatings
FR2350893A1 (fr) * 1976-05-14 1977-12-09 Air Liquide Procede et installation de decapage de revetement d'elements constitutifs d'installation de peinture
DE3223484A1 (de) * 1982-06-21 1983-12-22 Peter 1000 Berlin Lubinski Verfahren zur herstellung einer abwaschbaren antistatischen beschichtung fuer luftfahrzeuge
DE3436132A1 (de) * 1983-10-03 1985-04-11 Air Products And Chemicals, Inc., Allentown, Pa. Verfahren zur entfernung von anstrichschichten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8705236A1 *

Also Published As

Publication number Publication date
JPS63502567A (ja) 1988-09-29
WO1987005236A1 (fr) 1987-09-11
ES2004252A6 (es) 1988-12-16

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19871009

AK Designated contracting states

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Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19881003

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19890128

RIN1 Information on inventor provided before grant (corrected)

Inventor name: NICOLAS, JACQUES

Inventor name: GARDENT, MAURICE