EP1273357A1 - Verfahren zum Anstreichen von Karosserieteilen - Google Patents

Verfahren zum Anstreichen von Karosserieteilen Download PDF

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Publication number
EP1273357A1
EP1273357A1 EP02291686A EP02291686A EP1273357A1 EP 1273357 A1 EP1273357 A1 EP 1273357A1 EP 02291686 A EP02291686 A EP 02291686A EP 02291686 A EP02291686 A EP 02291686A EP 1273357 A1 EP1273357 A1 EP 1273357A1
Authority
EP
European Patent Office
Prior art keywords
primary coating
composite material
coating
type
paint
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
EP02291686A
Other languages
English (en)
French (fr)
Other versions
EP1273357B1 (de
Inventor
Michel Recouvreur
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.)
Ranger France SAS
Original Assignee
Matra Venture Composites
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 Matra Venture Composites filed Critical Matra Venture Composites
Publication of EP1273357A1 publication Critical patent/EP1273357A1/de
Application granted granted Critical
Publication of EP1273357B1 publication Critical patent/EP1273357B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B05D7/546—No clear coat specified 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
    • B05D3/06—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.
    • B05D3/062—Pretreatment
    • B05D3/063—Pretreatment of polymeric substrates
    • 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
    • B05D3/067—Curing or cross-linking the coating
    • 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
    • B05D7/02—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 macromolecular substances, e.g. rubber
    • 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
    • B05D1/045—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field on non-conductive substrates

Definitions

  • the present invention relates to a method of painting parts made of polyester composite material such as, for example, motor vehicle body parts.
  • SMC type polyester composite parts sheet molding compound
  • BMC bulk molding compound
  • these formed parts conventionally by molding a polyester resin reinforced with fibers of various kinds find application in the production of bumpers, doors, hoods or roofs for example.
  • their use directly out of the mold cannot be envisaged on a vehicle because these polyester composite materials generally have surface surfaces imperfections that do not guarantee these parts once painted a surface quality known as class A.
  • the present invention therefore provides a method of setting paint that provides a flawless surface appearance, without imperfections, similar to that which can be obtained on parts metal.
  • An object of the invention is a simple process which can be implemented. implemented at relatively low temperature (especially at temperature ambient) and at atmospheric pressure. Another goal is to offer a process that can easily be integrated into conventional processes for manufacturing industrial equipment and in particular vehicles automobiles.
  • This composite material is preferably a polyester composite material of type SMC LP (Sheet Molding Compound Low Profile).
  • This process which implements UV curing at low temperature eliminates thermal stresses (deformation, expansion, etc.) that composite materials undergo with processes painting of the prior art.
  • the cooking time very short of the process of the invention compared to those necessary for cooking in traditional ovens generates a significant increase in productivity like processing capabilities.
  • the primary coating with a low organic solvent content is polyester acrylic type.
  • the low viscosity of this type of primary coating allows obtain a penetration and recovery rate in the material very high composite.
  • the rapid crosslinking kinetics of the primary coating gives the composite material a seal perfect as well as a very strong reduction in degassing phenomena during or after the deposition of the paint layers.
  • This material is a polyester composite material which can come in different forms including that of a material molded into plates (SMC sheet molding compound).
  • SMC sheet molding compound a material molded into plates
  • SMC LP sheet molding compound low profile
  • the support material 10 having been freed of impurities resulting from its initial manufacturing process by degreasing first, the first step of this process (Figure 1) consists of first, from a heat source of wavelength, power and determined surface energy, to activate the surface of this support by a first ultraviolet radiation (UV 12) to facilitate adhesion upper layers of the support by opening its chemical bonds, then in a second step (figure 2) to cover the surface of this support by a primary coating 14 with a low organic solvent content (representing less than 50% by mass of the primary coating).
  • This primary coating which acts as a sealer is a varnish called "to high dry extract ", ie the dry matter remaining after solvent removal is greater than 50% of the initial mass of the primary coating.
  • This specific composition with low viscosity allows a high penetration and recovery rate in micro-pores carrier material.
  • This type of primary coating is by example available from products in the acrylic family polyesters from the Dutch company AKZOVERILAC.
  • the primary coating 14 is process in a third step of the process of the invention ( Figure 3) to the firing of this primary coating by subjecting it to a second ultraviolet radiation (UV 16) from previous heat source subject to wavelength, power and surface energy determined.
  • UV 16 ultraviolet radiation
  • This cooking by UV irradiation at low temperature and atmospheric pressure will cause, in just a few seconds, crosslinking of the primary coating (i.e. an association between them to form a network of macromolecules constituting the coating primer) favoring its grip in the support (coating adhesion Primary / support).
  • the micro-pores of the composite material which could have contained volatile components from the initial production (gaseous residues), are then found automatically plugged avoiding the degassing phenomena of the prior art.
  • this cooking at low temperature also allows constraints to be removed thermal (expansion, deformation, etc.) usually experienced by the support material in traditional oven baking processes.
  • thermal expansion, deformation, etc.
  • the last step of the process then consists in applying conventionally on the support thus covered by the coating primary one or more layers of paint 18.
  • This paint is of preferably a two-component polyurethane paint or even single-component melamine "oven-baked” applied by spraying electrostatic under temperature conditions between 80 ° to 200 ° C depending on the type of paint. Note that the application of these layers of paint is made easier by the presence of conductive particles (carbon in graphite form) at the very level of the composite support.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
EP02291686A 2001-07-06 2002-07-05 Verfahren zum Anstreichen von Karosserieteilen Expired - Lifetime EP1273357B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0109001A FR2826883B1 (fr) 2001-07-06 2001-07-06 Procede de mise en peinture de pieces de carrosserie
FR0109001 2001-07-06

Publications (2)

Publication Number Publication Date
EP1273357A1 true EP1273357A1 (de) 2003-01-08
EP1273357B1 EP1273357B1 (de) 2006-09-06

Family

ID=8865207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02291686A Expired - Lifetime EP1273357B1 (de) 2001-07-06 2002-07-05 Verfahren zum Anstreichen von Karosserieteilen

Country Status (4)

Country Link
EP (1) EP1273357B1 (de)
AT (1) ATE338588T1 (de)
DE (1) DE60214478T2 (de)
FR (1) FR2826883B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006010845A1 (fr) * 2004-06-28 2006-02-02 Centre National De La Recherche Scientifique (Cnrs) Procede et dispositif pour le depot de couches minces par pulverisation electrohydrodynamique, notamment en post-decharge
EP3825014A1 (de) * 2019-11-21 2021-05-26 REHAU AG + Co Verfahren zum beschichten eines kunststoffbauteils und kunststoffbauteil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0487323A1 (de) * 1990-11-20 1992-05-27 Sumitomo Chemical Company Limited Grundbeschichtung von Polypropylenformteilen
EP0575798A1 (de) * 1992-06-19 1993-12-29 Fuji Polymertech Co., Ltd Verfahren zur Herstellung von Fingertaste für Handhabeschalter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0487323A1 (de) * 1990-11-20 1992-05-27 Sumitomo Chemical Company Limited Grundbeschichtung von Polypropylenformteilen
EP0575798A1 (de) * 1992-06-19 1993-12-29 Fuji Polymertech Co., Ltd Verfahren zur Herstellung von Fingertaste für Handhabeschalter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006010845A1 (fr) * 2004-06-28 2006-02-02 Centre National De La Recherche Scientifique (Cnrs) Procede et dispositif pour le depot de couches minces par pulverisation electrohydrodynamique, notamment en post-decharge
US7799389B2 (en) 2004-06-28 2010-09-21 Centre National De La Recherche Scientifique Method and device for depositing thin films by electrohydrodynamic, in particular post-discharge, spraying
EP3825014A1 (de) * 2019-11-21 2021-05-26 REHAU AG + Co Verfahren zum beschichten eines kunststoffbauteils und kunststoffbauteil

Also Published As

Publication number Publication date
FR2826883A1 (fr) 2003-01-10
ATE338588T1 (de) 2006-09-15
DE60214478T2 (de) 2007-05-31
EP1273357B1 (de) 2006-09-06
FR2826883B1 (fr) 2003-12-12
DE60214478D1 (de) 2006-10-19

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