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EP1486262A1 - Powder coating apparatus and method - Google Patents

Powder coating apparatus and method Download PDF

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Publication number
EP1486262A1
EP1486262A1 EP03101743A EP03101743A EP1486262A1 EP 1486262 A1 EP1486262 A1 EP 1486262A1 EP 03101743 A EP03101743 A EP 03101743A EP 03101743 A EP03101743 A EP 03101743A EP 1486262 A1 EP1486262 A1 EP 1486262A1
Authority
EP
European Patent Office
Prior art keywords
support
strip
installation
paint
lacquering
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Withdrawn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
EP03101743A
Other languages
German (de)
French (fr)
Inventor
Paul Lambert
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.)
Dmsys Sarl
Original Assignee
Dmsys Sarl
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 Dmsys Sarl filed Critical Dmsys Sarl
Priority to EP03101743A priority Critical patent/EP1486262A1/en
Publication of EP1486262A1 publication Critical patent/EP1486262A1/en
Withdrawn legal-status Critical Current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
    • 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
    • B05D1/06—Applying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or 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
    • B05D2202/00—Metallic substrate
    • 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
    • B05D2252/00—Sheets
    • B05D2252/02—Sheets of indefinite length
    • 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
    • B05D2252/00—Sheets
    • B05D2252/10—Applying the material on both sides
    • 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
    • B05D3/02—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 baking
    • B05D3/0254—After-treatment
    • B05D3/0263—After-treatment with IR heaters

Definitions

  • the present invention relates to an installation or compact line for pre-lacquering substrates, preferably supports in the form of metal strips.
  • the factories producing pre-lacquered metal are generally subsidiaries of large steel groups, for example example in Europe Arcelor, Thyssen, Chorus, SSAB, and others installed in the USA, Australia, Japan, Korea, etc.
  • the industries using pre-lacquer are generally steel forming industries and among profilers either for sheet metal fabrication profiles, either of foamed panels.
  • the installation according to the present invention responds to this double problem of profilers, flexibility and time delivery, becoming their own pre-lacquer, which allows a drastic reduction in stocks of pre-coated coils upstream of the installation, which are replaced by unpainted coils.
  • the size of the stock in front of the line can be reduced by around 10 times, and by substantial reductions in storage and locked-in money plus the economy of supplier margin.
  • the object of the present invention is to provide a installation assembled in a compact unit of the order of 20 to 40 m depending on the options.
  • the components of the installation are known per se, individually, but their meeting makes it possible to carry out a pre-lacquering operation of equal or greater quality than that obtained with existing facilities.
  • Another object of the invention by means of this installation, is without necessarily excluding them, is to delete some mandatory steps mentioned more high in conventional systems, such as pre-treatment support, smoke incinerators, input and output accumulators etc ... Thanks to this installation, there is no more generation of pollution, nor risk of explosion or fire.
  • Another object of the invention is the production an installation allowing production speeds between 10 to 50 m / min which is in harmony with the speeds of the profiling machines.
  • the support strip is unwound in a unit of unrolling (1) and pass through a trimmer (2) where it is straightened and from there it passes successively into a powder coating booth (3) operating according to the electrostatic powdering process, a NIR cooking (4), then a cooling and drying (5) before being rewound in a rewinding unit (6).
  • the electrostatic powder coating booth (3) is a closed assembly and equipped with a suction and recycling of paint via a cyclone. Extraction and rejection of the residual atmosphere takes place in a hall via a battery of filters.
  • the paint overlay is achieved by minimum air electrostatic spraying.
  • the set is compact and autonomous, and is designed to allow fast color loading.
  • the equipment will be designed to allow the application of a coating nominal thickness 60 ⁇ at specified speeds. The usual dimensions will be; length 4 to 6m, width 1 at 3m, height 2.5m to 3m.
  • the NIR Cooking Oven is based on Very short wavelength infrared e.g. (2.5 ⁇ m) (near infrared) which allows cooking to be carried out times of 1 to 4 seconds, so it only requires 2m length of radiators for a speed of 50m / min.
  • the primary advantage of this system besides its short length, lies in the fact that the cooking takes place in the mass of the paint itself, without excessive heating of the mass of the support (steel for example) unlike others techniques like induction for example.
  • the power installed is significant in the order of 900 KVA, and requires cooling of the IR elements due to the heat released.
  • a measuring device regulates the strip temperature.
  • the radiation from the lamps requires a rollover sufficient as well as a fume extraction ends.
  • All control elements are grouped in a cabinet control and synchronized for online walking.
  • the water cooler (5) was chosen for reasons of efficiency compared to the air cooler. he also helps to cool the NIR oven heating elements.
  • the set is made of INOX, for example, and includes a polished entry roller allowing a slight embarrassment of the strip, preventing a flow of water upstream. he includes a series of powered spray booms by a high flow circulation pump. The ramps are followed by a pair of wringers and an air dryer blade. The length of the assembly will be of the order of 3 m. A outdoor refrigerant is provided to maintain the water temperature within well defined limits.
  • the metallic support used in the form of coils can be galvanized steel Z 275 or Aluzinc AZ 150 SPT treaties.
  • the present invention is intended with the filing a dry film (SPT) ensuring good paint adhesion, a pre-treatment section maybe in the installation.
  • the paint is of characteristic defined for the NIR cooking in the required time.
  • the base of these paints are of the exterior quality polyester type, that is, meets ECCA standards. She is applied in thicknesses of approximately 60 micrometers ( ⁇ ), and it can be smooth or textured.
  • the speed range adopted is from 10 to 50 m / min for the band.
  • the line is run by two operators of average qualification.
  • the strip width is from 600 to 1500 mm.

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  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The installation has an unwinding unit that unwinds a support strip and passes the strip in a de-bender that reshapes the strip. A powder paint coating cabin functions according to electrostatic powdering procedure for coating the strip with powder paint. A near infra-red (NIR) baking furnace hardens the painting. A cooling and drying unit cools heating units and the strip before re-winding the strip into a coil. An independent claim is also included for a method for coating a support.

Description

La présente invention concerne une installation ou ligne compacte de pré-laquage de supports, de préférence des supports sous forme de bandes métalliques.The present invention relates to an installation or compact line for pre-lacquering substrates, preferably supports in the form of metal strips.

Des installations de pré-laquage sont connues utilisant le plus souvent des peintures liquides à base de solvant et nécessitant des installations importantes liées aux techniques utilisées. Citons entre autres:

  • Les temps de cuisson allant généralement de 30 secondes à plusieurs minutes.
  • L'inertie thermique des moyens de cuisson imposant des vitesses de production constantes, imposant des dispositifs d'accumulation d'entrée et de sortie, et des bandes d'arrêt pour ne pas arrêter le procédé.
  • Dans le cas de peintures du type avec solvant, il faut envisager la nécessité d'utilisation d'incinérateurs de fumée.
  • obligation de mise en oeuvre de mesures de sécurité (par exemple,pour éviter les explosions ou incendies)
Pre-lacquering installations are known most often using solvent-based liquid paints and requiring significant installations linked to the techniques used. These include:
  • Cooking times generally range from 30 seconds to several minutes.
  • The thermal inertia of the cooking means imposing constant production speeds, imposing input and output accumulation devices, and stop bands so as not to stop the process.
  • In the case of solvent-type paints, consideration should be given to the need for the use of smoke incinerators.
  • obligation to implement security measures (for example, to avoid explosions or fires)

Les usines productrices de métal pré-laqué, sont généralement filiales de grands groupe sidérurgiques, par exemple en Europe Arcelor, Thyssen, Chorus, SSAB, et d'autres installées aux USA, Australie, Japon, Corée etc.. The factories producing pre-lacquered metal are generally subsidiaries of large steel groups, for example example in Europe Arcelor, Thyssen, Chorus, SSAB, and others installed in the USA, Australia, Japan, Korea, etc.

Les industries utilisatrices du pré-laqué, sont généralement des industries de formage de l'acier et parmi elles les profileurs soit pour la fabrication de tôles profilées, soit de panneaux moussés.The industries using pre-lacquer are generally steel forming industries and among profilers either for sheet metal fabrication profiles, either of foamed panels.

La taille de ces sidérurgistes et les installations sur lesquelles ils produisent imposent nécessairement le respect d'impératifs de minima de quantités par article et de planification, généralement incompatibles avec ceux des profileurs plus proches des clients, et où les marchés deviennent de plus en plus concurrentiels. La flexibilité et la rapidité de réponse à la demande deviennent des éléments prépondérants pour conserver ces marchés ou en acquérir des nouveaux. Pour y faire face les profileurs doivent donc constituer d'importants stocks et ceci nécessite beaucoup de place et d'argent immobilisé. Ces coûts peuvent atteindre plusieurs millions d'Euros.The size of these steelmakers and the facilities on which they produce necessarily impose the compliance with minimum quantity requirements per article and planning, generally incompatible with those of profilers closer to customers, and where markets become more and more competitive. Flexibility and the speed of response to demand becomes preponderant elements to maintain these markets or in acquire new ones. To deal with the profilers must therefore build up large stocks and this requires a lot of space and immobilized money. These costs can reach several million Euros.

L'installation selon la présente invention répond à ce double problème des profileurs, la flexibilité et délai de livraison, en devenant leur propre pré-laqueur, ce qui permet une diminution drastique des stocks de bobines pré-laquées en amont de l'installation, qui sont remplacées par des bobines non peintes. L'ampleur du stock devant ligne peut être réduites de l'ordre de 10 fois, et par conséquents réductions des dépenses de stockage et de l'argent immobilisé auxquels s'ajoutent l'économie de la marge fournisseur.The installation according to the present invention responds to this double problem of profilers, flexibility and time delivery, becoming their own pre-lacquer, which allows a drastic reduction in stocks of pre-coated coils upstream of the installation, which are replaced by unpainted coils. The size of the stock in front of the line can be reduced by around 10 times, and by substantial reductions in storage and locked-in money plus the economy of supplier margin.

Le but de la présente invention est de réaliser une installation rassemblée en une unité compacte de l'ordre de 20 à 40 m selon les options. Les composants de l'installation sont connus en soit, individuellement, mais leur réunion permet de réaliser une opération de pré-laquage de qualité égale ou supérieure à celle obtenue avec les installations existantes.The object of the present invention is to provide a installation assembled in a compact unit of the order of 20 to 40 m depending on the options. The components of the installation are known per se, individually, but their meeting makes it possible to carry out a pre-lacquering operation of equal or greater quality than that obtained with existing facilities.

Un autre but de l'invention, au moyen de cette installation, est sans nécessairement les exclure, est de supprimer certaines étapes obligatoires mentionnées plus haut dans les systèmes conventionnels, telles que le pré-traitement du support, les incinérateurs de fumée, accumulateurs d'entrée et de sorties etc... Grâce à cette installation, il n'y a plus de génération de pollution, ni de risque d'explosions ni d'incendies.Another object of the invention, by means of this installation, is without necessarily excluding them, is to delete some mandatory steps mentioned more high in conventional systems, such as pre-treatment support, smoke incinerators, input and output accumulators etc ... Thanks to this installation, there is no more generation of pollution, nor risk of explosion or fire.

Enfin, un autre but de l'invention est la réalisation d'une installation permettant des vitesses de production comprise entre 10 à 50 m/min ce qui est en harmonie avec les vitesses des machines des profileurs.Finally, another object of the invention is the production an installation allowing production speeds between 10 to 50 m / min which is in harmony with the speeds of the profiling machines.

Facultativement, au moyen d'une unité supplémentaire on peut mettre en oeuvre la réalisation double face sans accroissement notable de la longueur de l'ensemble.Optionally, using an additional unit we can implement the double-sided realization without notable increase in the length of the assembly.

Des études de faisabilité d'une telle installation ont été faites et ont permis de conclure à la possibilité de réaliser des installations qui peuvent produire annuellement et par poste jusqu'à 8500 tonnes de bobines pré-laquées. La rentabilité du système est non seulement liée à l'économie d'achat du support non peint, mais plus principalement à la souplesse de production du support pré-laqué, conduisant à une réduction importante des stocks devant installation, et de la réduction du coût de ce stockage. Feasibility studies for such an installation have been made and have concluded that the possibility to realize installations which can produce annually and by post up to 8,500 tonnes of coils pre-lacquered. The profitability of the system is not only linked to the economy of purchasing unpainted support, but more mainly to the production flexibility of the pre-lacquered support, leading to a significant reduction in stocks before installation, and reducing the cost of this storage.

Pour que l'invention puise être mieux comprise référence est faite au dessin accompagnant représentant un schéma d'une installation de pré-laquage selon l'invention.So that the invention can be better understood reference is made to the accompanying drawing representing a diagram of a pre-lacquering installation according to the invention.

L'installation de ligne compacte de pré-laquage selon l'invention est décrite dans la revendication 1.Installation of a compact pre-lacquering line according to the invention is described in claim 1.

Les étapes du procédé au moyen de cette installation consistent, dans l'ordre chronologique à:

  • 1. procéder au déroulement d'une bobine nue de support;
  • 2. appliquer de la peinture en poudre par voie électrostatique;
  • 3. procéder à la cuisson de l'ensemble support et poudre de peinture par infra-rouge, de préférence selon le procédé NIR (Near Infra-Red, c.-à-d. dans l'infra-rouge proche);
  • 4. refroidir et sécher au moyen d'un refroidisseur à eau et d'un sécheur de bande servant à refroidir ce support enduit de peinture
  • 5. ré-enrouler le support sous forme de bobine.
    • The stages of the process using this installation consist, in chronological order:
  • 1. unwind a bare support coil;
  • 2. apply powder paint electrostatically;
  • 3. bake the entire support and paint powder by infrared, preferably according to the NIR process (Near Infra-Red, ie in the near infrared);
  • 4. cool and dry using a water cooler and a band dryer to cool this paint-coated support
  • 5. rewind the support in the form of a reel.

    • Le mode de réalisation préféré de l'installation de pré-laquage selon l'invention sera maintenant décrit en se référant au dessin accompagnant. Elle est du type ligne de déroulement et enroulement à bande tendue horizontale.The preferred embodiment of the installation of pre-lacquering according to the invention will now be described in referring to the accompanying drawing. It is of the line type unwinding and winding with horizontal tensioned band.

    La bande de support est déroulée dans une unité de déroulement (1) et passe dans un décintreuse (2) où elle est redressée et de là elle passe successivement dans une cabine d'enduction de peinture en poudre (3) fonctionnant selon le procédé de poudrage électrostatique, un four de cuisson NIR (4), puis une unité de refroidissement et de séchage (5) avant d'être ré-enroulée dans une unité de ré-enroulement (6).The support strip is unwound in a unit of unrolling (1) and pass through a trimmer (2) where it is straightened and from there it passes successively into a powder coating booth (3) operating according to the electrostatic powdering process, a NIR cooking (4), then a cooling and drying (5) before being rewound in a rewinding unit (6).

    Ces diverses unités sont bien connues des spécialistes et ne doivent pas être décrites en détails ici.These various units are well known to specialists and need not be described in detail here.

    La cabine de poudrage électrostatique (3) est un ensemble fermé et équipé d'un système d'aspiration et de recyclage de peinture via un cyclone. L'extraction et le rejet de l'atmosphère résiduelle se fait dans un hall via une batterie de filtres. Le recouvrement de peinture est réalisé par pistolage électrostatique à minimum d'air. L'ensemble est compact et autonome, et est conçu pour permettre un chargement de couleur rapide. L'équipement sera conçu pour permettre l'application d'un revêtement d'épaisseur de 60 µ nominale aux vitesses spécifiées. Les dimensions habituelles seront ; longueur 4 à 6m, largeur 1 à 3m, hauteur 2,5m à 3m.The electrostatic powder coating booth (3) is a closed assembly and equipped with a suction and recycling of paint via a cyclone. Extraction and rejection of the residual atmosphere takes place in a hall via a battery of filters. The paint overlay is achieved by minimum air electrostatic spraying. The set is compact and autonomous, and is designed to allow fast color loading. The equipment will be designed to allow the application of a coating nominal thickness 60 µ at specified speeds. The usual dimensions will be; length 4 to 6m, width 1 at 3m, height 2.5m to 3m.

    Le Four de Cuisson NIR est basé sur une cuisson à Infra Rouge de longueur d'onde très courte p.ex. (2,5 µm) (infra rouge proche) qui permet de réaliser la cuisson en des temps de 1 à 4 secondes, et il ne nécessite donc que 2m de longueur de radiateurs pour une vitesse de 50m/min. L'avantage premier de ce système outre sa faible longueur, réside dans le fait que la cuisson se réalise dans la masse de la peinture elle même, sans échauffement excessif de la masse du support (acier par exemple) à l'inverse d'autres techniques comme l'induction par exemple. La puissance installée est importante de l'ordre de 900 KVA, et nécessite un refroidissement des éléments IR du fait de la chaleur dégagée. Un dispositif de mesure régule la température de la bande.The NIR Cooking Oven is based on Very short wavelength infrared e.g. (2.5 µm) (near infrared) which allows cooking to be carried out times of 1 to 4 seconds, so it only requires 2m length of radiators for a speed of 50m / min. The primary advantage of this system besides its short length, lies in the fact that the cooking takes place in the mass of the paint itself, without excessive heating of the mass of the support (steel for example) unlike others techniques like induction for example. The power installed is significant in the order of 900 KVA, and requires cooling of the IR elements due to the heat released. A measuring device regulates the strip temperature.

    Le rayonnement des lampes impose un capotage suffisant de même qu'une aspiration des fumées aux extrémités.The radiation from the lamps requires a rollover sufficient as well as a fume extraction ends.

    Le système est mis hors service lors de l'arrêt de la bande ce qui réalise une économie d'énergie. Tous les éléments de commande sont regroupés dans une armoire de commande et synchronisés pour la marche en ligne.The system is put out of service when the tape which saves energy. All control elements are grouped in a cabinet control and synchronized for online walking.

    Le refroidisseur à eau (5) a été choisi pour des raisons d'efficacité comparé au refroidisseur à air. Il permet également de participer au refroidissement des éléments chauffants du four NIR.The water cooler (5) was chosen for reasons of efficiency compared to the air cooler. he also helps to cool the NIR oven heating elements.

    L'ensemble est en INOX, par exemple, et comprend un rouleau d'entrée poli permettant un léger embarrage de la bande, évitant un écoulement d'eau vers l'amont. Il comprend une série de rampes à pulvérisations alimentées par une pompe de circulation à fort débit. Les rampes sont suivies d'une paire d'essoreurs et d'un sécheur à air à lame. La longueur de l'ensemble sera de l'ordre de 3 m. Un réfrigérant extérieur est prévu pour maintenir la température d'eau dans des limites bien définies.The set is made of INOX, for example, and includes a polished entry roller allowing a slight embarrassment of the strip, preventing a flow of water upstream. he includes a series of powered spray booms by a high flow circulation pump. The ramps are followed by a pair of wringers and an air dryer blade. The length of the assembly will be of the order of 3 m. A outdoor refrigerant is provided to maintain the water temperature within well defined limits.

    Le support métallique employé sous forme de bobines peut être en acier galvanisé Z 275 ou de l'Aluzinc AZ 150 traités SPT. La présente invention est prévue avec le dépôt d'un film sec (SPT) assurant le bon accrochage peinture, une section de pré-traitement peut-être dans la l'installation. The metallic support used in the form of coils can be galvanized steel Z 275 or Aluzinc AZ 150 SPT treaties. The present invention is intended with the filing a dry film (SPT) ensuring good paint adhesion, a pre-treatment section maybe in the installation.

    La peinture est de caractéristique définie pour la cuisson NIR dans les temps requis. La résine, de base de ces peintures est du type polyester de qualité extérieure, c'est - à - dire répondant aux normes de l'ECCA. Elle est appliquée en épaisseurs d'environ 60 micromètres (µ), et elle peut être de finition lisse ou texturée.The paint is of characteristic defined for the NIR cooking in the required time. Resin, the base of these paints are of the exterior quality polyester type, that is, meets ECCA standards. She is applied in thicknesses of approximately 60 micrometers (µ), and it can be smooth or textured.

    Les données paramétriques ci-dessus sont à titre purement indicatif et en aucun cas ne sont limitatifs de l'invention telle que revendiquée.The above parametric data are for purely indicative and in no case are limiting of the invention as claimed.

    Les options retenues ci-dessus garantissent la parfaite qualité des productions et du rendement de matière subséquents.The options selected above guarantee the perfect quality of production and material yield Subsequent.

    L'installation décrite ci-dessus permet de créer un système très compact, capable de produire un produit de qualité lors des phases transitoires et permet de gérer les changements de bobines sans nécessairement recourir à des investissements lourds comme dans les équipements classiques.The installation described above allows you to create a very compact system, capable of producing a product of quality during the transitional phases and makes it possible to manage coil changes without necessarily resorting to heavy investments like in equipment classics.

    La gamme de vitesse retenue est de 10 à 50 m/min pour la bande. La ligne est conduite par deux opérateurs de qualification moyenne.The speed range adopted is from 10 to 50 m / min for the band. The line is run by two operators of average qualification.

    La largeur de bande est de 600 à 1500 mm.The strip width is from 600 to 1500 mm.

    L'épaisseur du support est de 0,3 mm à 1 mm.

  • a) A titre d'exemple, une bande d'acier utilisée dans le procédé selon l'invention peut avoir les spécifications suivantes:
    • Support Aluzinc Z150 revêtu de film sec
    • bobines de 1250 mm x 0,5 mm de 7 à 8 tonnes
    • vitesse de passage 30 m/min
    • revêtement texturé polyester noir de 60µ
    • température métal PMT 270 °C
    Il est bien évident que les exemples sont purement illustratifs et que l'invention n'est limitée que par les revendications ci-jointes. En particulier, bien que l'invention soit une ligne compacte de pré-laquage, on peut aisément adapter l'installation d'application de la peinture de poudre et de la cuisson par le procédé NIR sur une ligne de pré-laquage conventionnelle.
    • The thickness of the support is from 0.3 mm to 1 mm.
  • a) For example, a steel strip used in the process according to the invention can have the following specifications:
    • Aluzinc Z150 support coated with dry film
    • spools of 1250 mm x 0.5 mm from 7 to 8 tonnes
    • passage speed 30 m / min
    • 60µ black polyester textured coating
    • metal temperature PMT 270 ° C
    It is obvious that the examples are purely illustrative and that the invention is only limited by the appended claims. In particular, although the invention is a compact pre-lacquering line, one can easily adapt the installation for applying powder paint and baking by the NIR process on a conventional pre-lacquering line.

    • Claims (6)

    Installation de pré-laquage du type à ligne de passe horizontale pour pré-laquer un support par exemple une bande, comprenant: une unité de déroulement (1) de la bande de support; une décintreuse (2) pour redresser la bande; une ou deux cabines (3) d'enduction simple ou double face de peinture en poudre pour enduire le support par voie électrostatique; un four de cuisson (4) du type NIR pour durcir la peinture; une unité de refroidissement et de séchage (5) pour à la fois refroidir les éléments chauffants et la bande de support, et une unité de ré-enroulement munie d'un enrouleur à courroie(6) de la bande de support. une unité de ré-enroulement (6) de la bande de support. des unité de guidage enroulement et déroulement. Installation of pre-lacquering of the horizontal pass line type for pre-lacquering a support, for example a strip, comprising: a unit for unwinding (1) the support strip; a scraper (2) for straightening the strip; one or two booths (3) for single or double-sided powder coating to coat the support electrostatically; a cooking oven (4) of the NIR type for hardening the paint; a cooling and drying unit (5) for both cooling the heating elements and the support strip, and a rewinding unit provided with a belt reel (6) of the support strip. a rewinding unit (6) of the support strip. winding and unwinding guide units. Installation selon la revendication 1 où le support est un métal, par exemple, de l'acier galvanisé ou de l'Aluzinc ou d'autres métaux aluminium, zinc, cuivre, Inox etc..Installation according to claim 1 where the support is a metal, for example, galvanized steel or Aluzinc or other metals aluminum, zinc, copper, Stainless steel etc. Installation selon l'une quelconque des revendications 1 et 2 où la bande de support se déplace dans l'installation à une vitesse de 10 à 50 m/minute. Installation according to any of claims 1 and 2 in which the support strip moves in the installation at a speed of 10 to 50 m / minute. Installation selon l'une quelconque des revendications 1 et 3 où la largeur de la bande se situe entre 600 à 1500 mm et elle a une épaisseur de 0,3 à 1 mm.Installation according to any of claims 1 and 3 where the width of the strip is between 600 to 1500 mm and it has a thickness of 0.3 to 1 mm. Procédé de pré-laquage d'un support au moyen de l'installation selon l'une quelconque des revendications 1 à 4 comprenant les étapes de: 1. procéder au déroulement d'une bobine nue de support 2. appliquer de la peinture en poudre par voie électrostatique 3. procéder à la cuisson de l'ensemble support et poudre de peinture par infra-rouge, de préférence selon le procédé NIR (Near Infra-Red, c.-à-d. Infra-rouge proche). 4. refroidir ce support enduit de peinture au moyen d'un liquide. 5. ré-enrouler le support sous forme de bobine. Method for pre-lacquering a support by means of the installation according to any one of Claims 1 to 4, comprising the steps of: 1. unwind a bare support coil 2. apply powder paint electrostatically 3. bake the entire support and paint powder using infrared, preferably according to the NIR process (Near Infra-Red, ie Near Infra-Red). 4. cool this support coated with paint using a liquid. 5. rewind the support in the form of a reel. Procédé selon la revendication 5 où on applique un revêtement de l'ordre de 60 µm nominal.Method according to claim 5, in which a coating of around 60 µm nominal.
    EP03101743A 2003-06-13 2003-06-13 Powder coating apparatus and method Withdrawn EP1486262A1 (en)

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    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2008090567A2 (en) * 2007-01-25 2008-07-31 Shree Precoated Steels Ltd An improved, continuous coating line and a process of continuously coating metal strip
    EP2011660A1 (en) * 2007-07-06 2009-01-07 Cedrus Method of creating a wood grain effect on a metal profile and profile thus produced
    EP2857112A1 (en) * 2013-10-01 2015-04-08 AB Anlagenplanung GmbH Method and assembly for powder coating

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    US5176755A (en) * 1990-02-14 1993-01-05 Armco Inc. Plastic powder coated metal strip
    US5618589A (en) * 1994-12-02 1997-04-08 Owens Corning Fiberglas Technology, Inc. Method and apparatus for coating elongate members
    US5882405A (en) * 1993-09-17 1999-03-16 Illinois Tool Works Inc. Method and apparatus for coating fasteners
    US20010018893A1 (en) * 1995-08-10 2001-09-06 Hakan Arverus Method and apparatus for powder coating

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US5176755A (en) * 1990-02-14 1993-01-05 Armco Inc. Plastic powder coated metal strip
    US5882405A (en) * 1993-09-17 1999-03-16 Illinois Tool Works Inc. Method and apparatus for coating fasteners
    US5618589A (en) * 1994-12-02 1997-04-08 Owens Corning Fiberglas Technology, Inc. Method and apparatus for coating elongate members
    US20010018893A1 (en) * 1995-08-10 2001-09-06 Hakan Arverus Method and apparatus for powder coating

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2008090567A2 (en) * 2007-01-25 2008-07-31 Shree Precoated Steels Ltd An improved, continuous coating line and a process of continuously coating metal strip
    WO2008090567A3 (en) * 2007-01-25 2008-09-25 Shree Precoated Steels Ltd An improved, continuous coating line and a process of continuously coating metal strip
    EP2011660A1 (en) * 2007-07-06 2009-01-07 Cedrus Method of creating a wood grain effect on a metal profile and profile thus produced
    EP2857112A1 (en) * 2013-10-01 2015-04-08 AB Anlagenplanung GmbH Method and assembly for powder coating

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