EP1273357A1 - Process for coating body parts of vehicles - Google Patents

Process for coating body parts of vehicles 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
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EP
European Patent Office
Prior art keywords
primary coating
composite material
coating
type
paint
Prior art date
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Granted
Application number
EP02291686A
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German (de)
French (fr)
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EP1273357B1 (en
Inventor
Michel Recouvreur
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Ranger France SAS
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Matra Venture Composites
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Publication of EP1273357A1 publication Critical patent/EP1273357A1/en
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    • 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.

Abstract

Painting procedure comprises exposing component (10) to UV light to open its chemical bonds, applying a primary coating (14) with a low organic solvent content which is exposed to UV light for a few seconds to bake the coating by reticulation, and then applying a coat of paint over the primary coating.

Description

Domaine de l'inventionField of the invention

La présente invention se rapporte à un procédé de mise en peinture de pièces en matériau composite polyester comme, par exemple, des pièces de carrosserie de véhicule automobile.The present invention relates to a method of painting parts made of polyester composite material such as, for example, motor vehicle body parts.

Art antérieurPrior art

Les pièces en matériau composite polyester de type SMC (sheet molding compound) ou BMC (bulk molding compound) sont de plus en plus utilisées en remplacement de pièces métalliques dans la fabrication de tous types d'équipements du fait de leur faible coût de fabrication, de leur absence de corrosion et de leur résistance aux chocs notamment.SMC type polyester composite parts (sheet molding compound) or BMC (bulk molding compound) are increasingly no longer used to replace metal parts in manufacturing all types of equipment due to their low manufacturing cost, their absence of corrosion and their impact resistance in particular.

En particulier, dans le domaine automobile, ces pièces formées classiquement par moulage d'une résine polyester renforcée par des fibres de diverses natures trouvent application dans la réalisation de pare-chocs, de portes, de capots ou de toits par exemple. Toutefois, leur utilisation directement en sortie de moule ne peut être envisagée sur un véhicule car ces matériaux composites polyesters présentent en général en surface des imperfections qui ne permettent pas de garantir à ces pièces une fois peintes une qualité de surface connue sous l'appellation de classe A.In particular, in the automotive field, 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. However, 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.

Aussi, actuellement, il est connu pour obtenir cette surface parfaitement lisse de mise en peinture de grande qualité d'appliquer sur le matériau en sortie de moule un apprêt bouche-pores qui sera poncé avant de recevoir un surfaceur (sealer) puis une ou plusieurs couches de peinture pour cacher les imperfections restantes. Toutefois, c'est un processus particulièrement long (chaque opération de dépôt pouvant durer plusieurs dizaines de minutes) et coûteux (il nécessite des étapes de cuisson en four). On peut aussi recourir au procédé connu sous le nom de « revêtement en moule (in-mold coating)» dans lequel la couche d'apprêt (voire la couche de peinture) est introduite directement dans le moule avant que la pièce ne soit complètement formée. Malheureusement, ce procédé est limité à la réalisation de pièces de forme simple du fait de la nécessité d'obtenir un recouvrement total de la surface à traiter.Also, currently, he is known to get this surface perfectly smooth high quality paint to apply on material leaving the mold a sealer primer which will be sanded before receive a sealer and then one or more layers of paint to hide remaining imperfections. However, it is a particularly long process (each deposit operation can last several tens of minutes) and expensive (it requires steps of baking). We can also use the process known as "In-mold coating" in which the primer layer (see the paint layer) is introduced directly into the mold before the part is completely formed. Unfortunately, this process is limited to the production of parts of simple shape due to the need to obtain a total covering of the surface to be treated.

Objet et définition de l'inventionObject and definition of the invention

La présente invention propose donc un procédé de mise en peinture qui procure un aspect de surface irréprochable, sans imperfections, semblable à celui pouvant être obtenu sur des pièces métalliques. Un but de l'invention est un procédé simple qui peut être mis en oeuvre à relativement basse température (notamment à température ambiante) et à pression atmosphérique. Un autre but est de proposer un procédé qui puisse facilement s'intégrer dans les processus conventionnels de fabrication d'équipements industriels et en particulier de véhicules automobiles.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.

Ces buts sont atteints par un procédé de mise en peinture de pièces en matériau composite dans lequel on active tout d'abord ladite pièce par un rayonnement ultraviolet, ensuite on recouvre ladite pièce d'un revêtement primaire à faible taux de solvant organique, puis on expose pendant quelques secondes celui-ci à un rayonnement ultraviolet, et enfin on applique au moins une couche de peinture sur ledit revêtement primaire ainsi exposé. Ce matériau composite est de préférence un matériau composite polyester du type SMC LP (Sheet Molding Compound Low Profile).These goals are achieved by a process of painting parts made of composite material in which said part is first activated by ultraviolet radiation, then we cover said part with a primary coating with low organic solvent content, then exposed for a few seconds this one has an ultraviolet radiation, and finally at least one layer of paint is applied to said coating primary thus exposed. This composite material is preferably a polyester composite material of type SMC LP (Sheet Molding Compound Low Profile).

Ce procédé qui met en oeuvre une cuisson UV à basse température permet de supprimer les contraintes thermiques (déformation, dilatation, etc.) habituelles que subissent les matériaux composites avec les procédés de mise en peinture de l'art antérieur. En outre, le temps de cuisson très court du procédé de l'invention comparé à ceux nécessaires aux cuissons en four traditionnelles engendre un accroissement notable de la productivité comme des capacités de traitement.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. In addition, 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.

Le revêtement primaire à faible taux de solvant organique est du type acrylique polyester. The primary coating with a low organic solvent content is polyester acrylic type.

La faible viscosité de ce type de revêtement primaire permet d'obtenir un taux de pénétration et de recouvrement dans le matériau composite très élevé. En outre, la cinétique de réticulation rapide du revêtement primaire confère au matériau composite une étanchéité parfaite ainsi qu'une très forte diminution des phénomènes de dégazage pendant ou après le dépôt des couches de peinture.The low viscosity of this type of primary coating allows obtain a penetration and recovery rate in the material very high composite. In addition, 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.

Brève description des dessinsBrief description of the drawings

Les caractéristiques et avantages de la présente invention ressortiront mieux de la description suivante, faite à titre indicatif et non limitatif, en regard des dessins annexés sur lesquels :

  • la figure 1 illustre la première étape du procédé selon l'invention de mise en peinture d'un matériau support de type SMC,
  • la figure 2 illustre la deuxième étape du procédé selon l'invention de mise en peinture d'un matériau support de type SMC,
  • la figure 3 illustre la troisième étape du procédé selon l'invention de mise en peinture d'un matériau support de type SMC, et
  • la figure 4 montre la structure finale du matériau.
The characteristics and advantages of the present invention will emerge more clearly from the following description, given by way of non-limiting illustration, with reference to the appended drawings in which:
  • FIG. 1 illustrates the first step of the method according to the invention of painting a support material of SMC type,
  • FIG. 2 illustrates the second step of the method according to the invention of painting a support material of SMC type,
  • FIG. 3 illustrates the third step of the method according to the invention of painting a support material of SMC type, and
  • Figure 4 shows the final structure of the material.

Description détaillée d'un mode de réalisation préférentielDetailed description of a preferred embodiment

La structure d'un matériau support 10 auquel est appliqué le procédé de mise en peinture de l'invention est la suivante. Ce matériau est un matériau composite polyester qui peut se présenter sous différentes formes dont celle d'un matériau moulé en plaques (SMC sheet molding compound). Dans cette catégorie, on s'intéressera plus particulièrement au SMC LP (sheet molding compound low profile) qui présente l'avantage de comporter un bon aspect de surface à l'issu de son processus de fabrication, même si, comme tous ces matériaux composites moulés, il présente naturellement dans sa structure et au niveau de sa surface des porosités (micro-pores) pouvant renfermer des résidus gazeux de ce processus sources potentiel de dégazage (notamment en cas de réchauffage ultérieur du support).The structure of a support material 10 to which the painting method of the invention is as follows. 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). In this category, we will be particularly interested SMC LP (sheet molding compound low profile) which has the advantage to have a good surface appearance at the end of its manufacturing, even though, like all these molded composite materials, naturally presents in its structure and at the level of its surface porosities (micro-pores) which may contain gaseous residues of this potential source degassing process (especially in case of subsequent reheating of the support).

Il peut toutefois être noté que si l'invention est appliquée préférentiellement à des matériaux de type SMC, elle peut être mise en oeuvre avec d'autres types de matériaux tels que ceux connus sous les appellations BMC (bulk molding compound), ZMC (Zanella molding compound), DMC (dough molding compound) ou encore TMC (thick molding compound).It may however be noted that if the invention is applied preferentially to SMC type materials, it can be used works with other types of materials such as those known under BMC (bulk molding compound), ZMC (Zanella molding) compound), DMC (dough molding compound) or even TMC (thick molding compound).

Ces matériaux sont utilisés dans tous types d'industrie pour la fabrication d'équipements les plus divers. Dans le domaine automobile, ils trouvent particulièrement application pour la réalisation des pare-chocs, des portes, des capots ou des toits des véhicules ou ils remplacent avantageusement les pièces métalliques antérieures.These materials are used in all types of industry for the manufacture of the most diverse equipment. In the automotive field, they find particular application for the production of bumpers, doors, hoods or roofs of vehicles or they replace advantageously the anterior metal parts.

Le procédé de mise en peinture de pièces en matériau composite de la structure précitée est explicité en regard des figures 1 à 4.The process of painting parts made of composite material of the above structure is explained with reference to FIGS. 1 to 4.

Le matériau support 10 ayant été débarrassé des impuretés résultant de son processus de fabrication initial par un dégraissage préalable, la première étape de ce procédé (figure 1) consiste tout d'abord, à partir d'une source de chaleur de longueur d'onde, de puissance et d'énergie de surface déterminées, à activer la surface de ce support par un premier rayonnement ultraviolet (UV 12) afin de faciliter l'adhérence des couches supérieures du support en ouvrant ses liaisons chimiques, puis dans une deuxième étape (figure 2) à recouvrir la surface de ce support par un revêtement primaire 14 à faible taux de solvant organique (représentant moins de 50% en masse du revêtement primaire). Ce revêtement primaire qui fait fonction de bouche-pores est un vernis dit « à haut extrait sec » c'est à dire dont la matière sèche restante après élimination des solvants est supérieure à 50% de la masse initiale du revêtement primaire. Cette composition spécifique à faible viscosité permet un taux de pénétration et de recouvrement élevé dans les micro-pores du matériau support. Ce type de revêtement primaire est par exemple disponible parmi les produits de la famille des acryliques polyesters de la société hollandaise AKZOVERILAC.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.

Une fois le revêtement primaire 14 déposé sur le support 10, il est procédé dans une troisième étape du procédé de l'invention (figure 3) à la cuisson de ce revêtement primaire en soumettant celui-ci à un second rayonnement ultraviolet (UV 16) à partir de source de chaleur précédente soumise à une longueur d'onde, une puissance et une énergie de surface déterminées. Cette cuisson par irradiation UV à basse température et à pression atmosphérique va provoquer, en quelques secondes seulement, une réticulation du revêtement primaire (c'est à dire une association entre elles pour former un réseau des macromolécules constituant le revêtement primaire) favorisant sa prise dans le support (l'adhérence revêtement primaire/support). En surface, les micro-pores du matériau composite, qui auraient pu contenir des composants volatils issus du processus de fabrication initial (des résidus gazeux), se trouvent alors automatiquement bouchés évitant les phénomènes de dégazage de l'art antérieur. On notera, et ceci est un aspect important de l'invention, que cette cuisson à basse température permet en outre une suppression des contraintes thermiques (dilatation, déformation, etc.) subis habituellement par le matériau support dans les procédés traditionnels de cuisson au four. De plus, la durée particulièrement réduite de l'étape de cuisson UV par rapport à celle d'une cuisson au four traditionnelle qui peut atteindre quelques dizaines de minutes, permet d'augmenter de façon notable la productivité.Once the primary coating 14 has been deposited on the support 10, it 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. 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). On the surface, 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. We will note, and this is an important aspect of the invention, that 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. Of more, the particularly short duration of the UV curing step by compared to traditional baking which can reach a few tens of minutes, significantly increases the productivity.

La dernière étape du procédé (figure 4) consiste ensuite à appliquer de façon conventionnelle sur le support ainsi recouvert par le revêtement primaire une ou plusieurs couches de peinture 18. Cette peinture est de préférence une peinture polyuréthanne bi-composants ou bien encore monocomposant mélaminée « à cuisson four » appliquée par pulvérisation électrostatique dans les conditions de température comprise entre 80° à 200°C selon le type de peinture. On notera que l'application de ces couches de peinture est facilitée par la présence de particules conductrices (carbone sous forme graphite) au niveau même du support composite.The last step of the process (figure 4) 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.

Claims (6)

Procédé de mise en peinture de pièces en matériau composite (10) dans lequel on active tout d'abord ladite pièce par un rayonnement ultraviolet (12), ensuite on recouvre ladite pièce d'un revêtement primaire à faible taux de solvant organique (14), puis on expose pendant quelques secondes celui-ci à un rayonnement ultraviolet (16), et enfin on applique au moins une couche de peinture (18) sur ledit revêtement primaire ainsi exposé.Method for painting parts of composite material (10) in which said part is first activated by radiation ultraviolet (12), then we cover said part with a primary coating with a low level of organic solvent (14), then exposing for a few seconds this one to an ultraviolet radiation (16), and finally we apply at least one layer of paint (18) on said primary coating as well presentation. Procédé selon la revendication 1, caractérisé en ce que ladite première étape d'exposition au rayonnement ultraviolet comprend une ouverture des liaisons chimiques de ladite pièce en matériau composite.A method according to claim 1, characterized in that said first step of exposure to ultraviolet radiation comprises an opening of the chemical bonds of said piece of composite material. Procédé selon la revendication 1, caractérisé en ce que ladite seconde étape d'exposition au rayonnement ultraviolet comprend une cuisson dudit revêtement primaire par réticulation.A method according to claim 1, characterized in that said second step of exposure to ultraviolet radiation comprises baking said primary coating by crosslinking. Procédé selon la revendication 1, caractérisé en ce que ledit matériau composite est un matériau composite polyester.Method according to claim 1, characterized in that said composite material is a polyester composite material. Procédé selon la revendication 4, caractérisé en ce que ledit matériau composite polyester est du type SMC LP (Sheet Molding Compound Low Profile).Method according to claim 4, characterized in that said polyester composite material is of the SMC LP (Sheet Molding Compound Low Profile) type. Procédé selon la revendication 1, caractérisé en ce que ledit revêtement primaire à faible taux de solvant organique est du type acrylique polyester.Process according to Claim 1, characterized in that the said primary coating with a low organic solvent content is of the acrylic polyester type.
EP02291686A 2001-07-06 2002-07-05 Process for coating body parts of vehicles Expired - Lifetime EP1273357B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0109001 2001-07-06
FR0109001A FR2826883B1 (en) 2001-07-06 2001-07-06 PROCESS FOR PAINTING BODY PARTS

Publications (2)

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EP1273357A1 true EP1273357A1 (en) 2003-01-08
EP1273357B1 EP1273357B1 (en) 2006-09-06

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EP02291686A Expired - Lifetime EP1273357B1 (en) 2001-07-06 2002-07-05 Process for coating body parts of vehicles

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EP (1) EP1273357B1 (en)
AT (1) ATE338588T1 (en)
DE (1) DE60214478T2 (en)
FR (1) FR2826883B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006010845A1 (en) * 2004-06-28 2006-02-02 Centre National De La Recherche Scientifique (Cnrs) Method and device for depositing thin films by electrohydrodynamic, in particular post-discharge, spraying
EP3825014A1 (en) * 2019-11-21 2021-05-26 REHAU AG + Co Process for coating a polymeric component, and polymeric component

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Publication number Priority date Publication date Assignee Title
EP0487323A1 (en) * 1990-11-20 1992-05-27 Sumitomo Chemical Company Limited Precoating of polypropylene moldings
EP0575798A1 (en) * 1992-06-19 1993-12-29 Fuji Polymertech Co., Ltd Process for producing finger-touch key for manipulation switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0487323A1 (en) * 1990-11-20 1992-05-27 Sumitomo Chemical Company Limited Precoating of polypropylene moldings
EP0575798A1 (en) * 1992-06-19 1993-12-29 Fuji Polymertech Co., Ltd Process for producing finger-touch key for manipulation switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006010845A1 (en) * 2004-06-28 2006-02-02 Centre National De La Recherche Scientifique (Cnrs) Method and device for depositing thin films by electrohydrodynamic, in particular post-discharge, spraying
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 (en) * 2019-11-21 2021-05-26 REHAU AG + Co Process for coating a polymeric component, and polymeric component

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FR2826883B1 (en) 2003-12-12
EP1273357B1 (en) 2006-09-06
DE60214478D1 (en) 2006-10-19
ATE338588T1 (en) 2006-09-15
DE60214478T2 (en) 2007-05-31

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