EP0963795B1 - Procédé pour le revêtement des pièces par pulvérisation de poudre - Google Patents

Procédé pour le revêtement des pièces par pulvérisation de poudre Download PDF

Info

Publication number
EP0963795B1
EP0963795B1 EP98110718A EP98110718A EP0963795B1 EP 0963795 B1 EP0963795 B1 EP 0963795B1 EP 98110718 A EP98110718 A EP 98110718A EP 98110718 A EP98110718 A EP 98110718A EP 0963795 B1 EP0963795 B1 EP 0963795B1
Authority
EP
European Patent Office
Prior art keywords
powder coating
components
component
conductive
process according
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.)
Expired - Lifetime
Application number
EP98110718A
Other languages
German (de)
English (en)
Other versions
EP0963795A1 (fr
Inventor
Herwig Dipl.-Ing. Schretter
Christian Herbert
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.)
HTM Sport und Freizeitgerate GmbH
Original Assignee
HTM Sport und Freizeitgerate GmbH
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 HTM Sport und Freizeitgerate GmbH filed Critical HTM Sport und Freizeitgerate GmbH
Priority to EP98110718A priority Critical patent/EP0963795B1/fr
Priority to DE59804999T priority patent/DE59804999D1/de
Priority to AT98110718T priority patent/ATE221419T1/de
Publication of EP0963795A1 publication Critical patent/EP0963795A1/fr
Application granted granted Critical
Publication of EP0963795B1 publication Critical patent/EP0963795B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B05D1/045—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field on non-conductive substrates

Definitions

  • the invention relates to a method according to the preamble of patent claim 1.
  • Known methods for powder coating are used on components electrically conductive materials, mainly made of metal.
  • On the components for example, positive, charge applied before the one with an opposite one Cargo, e.g. negatively charged, powder paint sprayed on becomes. Because of the opposite charges, the powder coating adheres to the component.
  • the adhesive powder coating is then baked at an elevated temperature.
  • the process is the powder coating of components made of electrically non-conductive Materials not possible because no load can be applied to such components.
  • the material for components is known per se electrically non-conductive materials (polyester) before shaping (extrusion) to mix with electrically conductive substances or particles and the components after the shape as with electrically conductive materials.
  • the master solution is dipped and dipped onto the plastic molded component a predetermined draining time electrostatically applied a resin powder thereon, that melted during a subsequent heat treatment and finally is cured.
  • a notable layer thickness and a regular layer To achieve the powder coating, the workpiece is before electrostatic adhesion of the powder at 100 ° C or slightly more, so that the workpiece for the powder still has a predetermined residual heat.
  • the key solution can be one contain quaternary ammonium compound.
  • FR-A-27 13 518 it is known to paint plastic objects with a Pre-treat the conductive liquid, for example an aqueous solution with alkyl ammonium is. After wetting can be dried. After painting is cooled.
  • a Pre-treat the conductive liquid for example an aqueous solution with alkyl ammonium is. After wetting can be dried. After painting is cooled.
  • EP-A-0 114 252 it is known as a pretreatment for electrostatic painting of plastic parts to apply a conductive liquid, which is a solution polar Leading substances in rapidly volatile alcohols.
  • each component Equipment By placing only an electrically or electrostatically chargeable on the surface of each component Equipment is applied that allows the oppositely charged Adhesion of powder coating before baking remains in the component its predetermined Get properties. Subsequent, complex and costly Checks whether the original properties or the desired properties of the non-conductive material or within a tolerance range, omitted, since only the surface is made conductive or chargeable with the aid of the equipment has been.
  • the component can be like a Powder-coated component made of conductive material.
  • the components are pre-wetted pre-dried to drive off volatile components that adversely affect the adhesion of the powder coating could be detrimental. This allows the quality of the later ones Improve painting.
  • the predrying is individually tailored to the material and / or the formation of the components. So little time is wasted as possible.
  • the components in a forced air oven, a dry air oven, pre-dried in a vacuum dryer, an infrared dryer or a microwave dryer are in a forced air oven, a dry air oven, pre-dried in a vacuum dryer, an infrared dryer or a microwave dryer.
  • Fig. 1 is at least one made of electrically non-conductive material Component 1 in a first method step A in a basin 2 into a master solution 3, z. B. immersed in a salt bath. alternatively, it is possible to spray the components 1, Vaporization or similar application processes with the lead solution 3.
  • a quaternary alkyl ammonium salt can be used, that is dissolved in a liquid.
  • step B e.g. then the one with the lead solution 3 wetted component placed on a paint holder 4.
  • the component 1 or the conductive solution 3 adhering to its surface electrically or electrostatically charged, e.g. positively charged.
  • powder coating 5 e.g. with spray guns or spray nozzles 6, onto the surface of component 1 are applied. Due to the opposite charges from Conductive solution 3 or component 1 and powder coating 5, the powder coating 5 adheres to the surface of component 1.
  • the powder coating 5 is covered with suitable means Treated to preferably 150 to 180 ° C for a predetermined period of time, to uniformly coat the surface of component 1 and subsequently cure. This can be for about 10 to 20 minutes and continuously or intermittently respectively.
  • a pretreatment step A1 is a component 11 made of at least one electrically non-conductive material freed from volatile components that would otherwise occur during the paint hardening process could volatilize what the paint adhesion and / or surface quality would adversely affect.
  • Pretreatment step A1 includes predrying, for example with a continuous or discontinuous process, e.g. in one Convection oven. Other devices can also be used for predrying, e.g. on Dry air oven, a vacuum dryer, an infrared dryer or a microwave dryer.
  • Parameters to be taken into account during predrying are e.g. the salary more volatile Proportions or the wall thickness of the respective component.
  • Predrying can take up to last for several hours at 180 ° C. The higher the temperature during predrying is, the faster the predrying takes place. The greater the wall thickness of the component is, the slower the predrying is. The less volatile parts in the material are available, the shorter the necessary pre-drying time. Little volatile For example, parts can already be injected in molded plastic components Obtain evacuation of the injection mold during the injection molding process become. Such a step in the injection molding process can be part of the pretreatment on.
  • the predried component 11 is cooled, preferably to room temperature. Such cooling will later optimal quality properties of the paint achieved.
  • the non-conductive material-related or non-conductive components 11, e.g. for a few seconds, in one with one Lead solution 13 filled basin 12 submerged.
  • the control solution 13 contains the already mentioned salt dissolved in a liquid substance.
  • the liquid substance can be water his. It is cheaper to use alcohol as a liquid substance because alcohol is evaporates more quickly during subsequent drying.
  • the components 11 are then left to drain in method step A4 and, e.g. at room temperature, completely dried. To speed up the drying, it may be beneficial to use elevated temperatures. Preferably is dried for 2 to 15 minutes at approx. 25 to 70 ° C.
  • drying can be simplified in process step A4 if the from the predrying components 11 that are still warm into the lead solution 13 (process step A3) are dipped. This is how the drying process in process step A4 the energy of the warm components is used for drying, and is only used after cooled down after wetting.
  • powder coating 15 is applied as in Fig. 1, e.g. with spray devices 16, and cured in process step B2.
  • Each component 11 is previously on the paint holder 4 with the desired charge, so that oppositely charged powder coating 15 adheres uniformly.
  • the process can be used for all types of electrically non-conductive materials.
  • This can e.g. reinforced and unreinforced polyamides, polyesters, polyurethanes, but also glass, ceramics, thermosets and wood.
  • Restrictions on The types of materials for which the method can be used can result from the temperature resistance of the respective material in the case of the lacquer hardening required Temperatures of approx. 150 to 180 ° C result.
  • the process can offer an even greater choice on paintable non-conductive materials such as plastic with lower melting or Include glass transition area.
  • the lead solution or the conductive particles in the electrically non-conductive materials used or from these components not only stick to the surface, but at least slightly penetrate or diffuse into the surface. This has for the desired properties of the components have no significant negative impact.

Claims (6)

  1. Procédé de laquage par poudre de composants (1, 11) en matériaux électriquement non conducteurs, dans lequel un apprêt électriquement conducteur sous forme d'une solution conductrice mouillante (3, 13) est appliqué par adhésion sur la surface du composant électriquement non conductrice en soi, et est chargé électriquement ou électrostatiquement sur la surface pour l'adhérence d'une laque en poudre de charge opposée, et le composant avec la laque en poudre adhérente est soumis à un traitement thermique pour le revêtement de la surface du composant et pour le durcissement de la laque en poudre, caractérisé en ce que les composants (1, 11), avant le mouillage par la solution conductrice (3, 13), sont débarrassés par pré-séchage au moyen d'énergie thermique des constituants du matériau facilement volatils, influençant négativement l'adhérence de la laque en poudre et/ou la qualité de surface de la laque en poudre.
  2. Procédé suivant la revendication 1, caractérisé en ce que le pré-séchage est effectué pendant une phase de pré-traitement (A1) compte tenu de paramètres spécifiques aux composants et/ou aux matériaux, de préférence en fonction de l'épaisseur de paroi des composants et/ou de la teneur en constituants facilement volatils des matériaux.
  3. Procédé suivant la revendication 1, caractérisé en ce que les composants (1, 11) sont pré-séchés dans une étuve à circulation d'air, une étuve à air sec, un séchoir sous vide, un séchoir à infrarouges ou un séchoir à micro-ondes.
  4. Procédé suivant la revendication 1, caractérisé en ce que les composants (1, 11) sont refroidis après le pré-séchage à peu près à la température ambiante.
  5. Procédé suivant la revendication 1, caractérisé en ce que les composants (1, 11) pré-séchés sont mouillés à l'état encore chaud par la solution conductrice (3, 13) et sont ensuite séchés et/ou refroidis.
  6. Procédé suivant l'une des revendications 1 à 3, caractérisé en ce que, pour des composants en matière plastique (1, 11) fabriqués par moulage par injection pour le laquage par poudre, l'outil de moulage par injection est mis sous vide pendant le processus de moulage pour réduire les constituants volatils du matériau.
EP98110718A 1998-06-10 1998-06-10 Procédé pour le revêtement des pièces par pulvérisation de poudre Expired - Lifetime EP0963795B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98110718A EP0963795B1 (fr) 1998-06-10 1998-06-10 Procédé pour le revêtement des pièces par pulvérisation de poudre
DE59804999T DE59804999D1 (de) 1998-06-10 1998-06-10 Verfahren zum Pulverlackieren von Bauteilen
AT98110718T ATE221419T1 (de) 1998-06-10 1998-06-10 Verfahren zum pulverlackieren von bauteilen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98110718A EP0963795B1 (fr) 1998-06-10 1998-06-10 Procédé pour le revêtement des pièces par pulvérisation de poudre

Publications (2)

Publication Number Publication Date
EP0963795A1 EP0963795A1 (fr) 1999-12-15
EP0963795B1 true EP0963795B1 (fr) 2002-07-31

Family

ID=8232108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98110718A Expired - Lifetime EP0963795B1 (fr) 1998-06-10 1998-06-10 Procédé pour le revêtement des pièces par pulvérisation de poudre

Country Status (3)

Country Link
EP (1) EP0963795B1 (fr)
AT (1) ATE221419T1 (fr)
DE (1) DE59804999D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005013230A1 (de) * 2005-03-18 2006-09-28 L. Schulte & Co. Gmbh Verfahren zur elektrostatischen Pulverbeschichtung von hitzebeständigen Kunststoffteilen sowie Mittel zur Herstellung einer leitfähigen Schicht
DE102005053327B4 (de) * 2005-11-07 2008-08-21 Eisenmann Anlagenbau Gmbh & Co. Kg Vorrichtung und Verfahren zur Oberflächenbehandlung von Werkstücken
AT504712A1 (de) 2006-12-21 2008-07-15 Steyr Daimler Puch Ag Verfahren zur herstellung einer zusatzpanzerung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL131144C (fr) * 1961-03-06
DE1519326A1 (de) * 1964-02-17 1970-03-19 Ransburg Electro Coating Corp Mittel zur Oberflaechenbehandlung von isolierenden Materialien
GB1198462A (en) * 1966-09-27 1970-07-15 Hommel Company O Method of Electrostatic Application of Vitreous Frit Coatings to Glass and Other Ceramic Materials
DD137196B1 (de) * 1978-06-29 1980-12-24 Wolfgang Kleber Verfahren zur elektrostatischen beschichtung von werkstuecken aus isolierstoff
DE3246574C2 (de) * 1982-12-16 1985-10-10 Fulgurit GmbH & Co KG, 3050 Wunstorf Vorrichtung zur elektrostatischen Spritzlackierung
US5219493A (en) * 1991-06-12 1993-06-15 Henkel Corporation Composition and method for enhancing the surface conductivity of thermoplastic surfaces
FR2713518B1 (fr) * 1993-12-14 1996-01-26 Applic Peintures Ste Indle Procédé pour réaliser par voie électrostatique un revêtement en résine époxy sur des objets en matière plastique.
DE4417172A1 (de) * 1994-05-17 1995-11-23 Worwag Lack Farbenfabrik Gmbh Verfahren zur elektrostatischen Pulverbeschichtung nichtleitender Gegenstände

Also Published As

Publication number Publication date
ATE221419T1 (de) 2002-08-15
DE59804999D1 (de) 2002-09-05
EP0963795A1 (fr) 1999-12-15

Similar Documents

Publication Publication Date Title
DE1571168B2 (de) Verfahren zum Überziehen von Gegenständen
EP3186303B1 (fr) Procédé d'imprégnation de pièces moulées
DE2843843A1 (de) Verfahren zur herstellung eines in einer elektrode integrierten separators und ein nach diesem verfahren hergestelltes produkt
EP0963795B1 (fr) Procédé pour le revêtement des pièces par pulvérisation de poudre
DE2218320C3 (de) Verfahren zur Oberflächenvergütung von Gegenständen aus härtbarem Kunststoff
DE835123C (de) Verfahren zum Lackieren eines drehbaren Gegenstandes, z.B. von Armaturen
WO1995031293A1 (fr) Procede pour le revetement electrostatique d'articles non conducteurs par des vernis en poudre
EP0476539B1 (fr) Procédé pour appliquer des revêtements en poudre sur des surfaces métalliques
DE102005006903B4 (de) Verfahren zum Beschichten von Glasflächen und Oberfläche eines Glasgegenstandes
DE2914733A1 (de) Verfahren zur elektrostatischen beschichtung von werkstuecken aus isolierstoff
CA1239519A (fr) Methode et dispositif de moulage
CH492544A (de) Verfahren zur Herstellung von Formkörpern
DD235426A5 (de) Verfahren zum dekorieren und korrosionsverhindernden lackieren von metallischen dosenruempfen
DE2112751C3 (fr)
DE3613274C2 (fr)
EP0309595B1 (fr) Procédé pour la fabrication d'objets formés
DE69434165T2 (de) Verfahren zur beschichtung von mehr oder weniger komplexer oberfläche, materialien zu ihrer herstellung und so hergestellte produkte
DE2449014C3 (de) Verfahren zum Vorbereiten von Kunststoff-Formteilen für die elektrostatische Lackierung
DE811847C (de) Verfahren zum Lackieren bzw. Impraegnieren von elektrischen Wicklungen oder Traegern elektrischer Wicklungen
DE2151046A1 (de) Verfahren und Vorrichtung,um eine metallische Oberflaeche zu passivieren
DE19924557C1 (de) Verfahren zur Herstellung reflektierender Schichten
DE102019130996A1 (de) Oberflächenbeschichtungsverfahren und Oberflächenbeschichtungseinrichtung zur Beschichtung einer Baueinheit sowie ein Fahrzeug
DE102016214466B4 (de) Verfahren und Formwerkzeug zum Herstellen eines beschichteten Kunststoff-Formteils
DE102022113626A1 (de) Verfahren zur Tauchbadbehandlung eines Bauelements
DE102019104407A1 (de) Verfahren zur Herstellung eines beschichteten Kunststoffbauteils

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19980610

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE FR IT LI

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AKX Designation fees paid

Free format text: AT CH DE FR IT LI

17Q First examination report despatched

Effective date: 20010118

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR IT LI

REF Corresponds to:

Ref document number: 221419

Country of ref document: AT

Date of ref document: 20020815

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59804999

Country of ref document: DE

Date of ref document: 20020905

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030506

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: TYROLIA TECHNOLOGY GMBH

Free format text: HTM SPORT- UND FREIZEITGERAETE AKTIENGESELLSCHAFT#TYROLIAPLATZ 1#2320 SCHWECHAT (AT) -TRANSFER TO- TYROLIA TECHNOLOGY GMBH#TYROLIAPLATZ 1#2320 SCHWECHAT (AT)

Ref country code: CH

Ref legal event code: NV

Representative=s name: BRAUN & PARTNER PATENT-, MARKEN-, RECHTSANWAELTE

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090625

Year of fee payment: 12

Ref country code: FR

Payment date: 20090615

Year of fee payment: 12

Ref country code: AT

Payment date: 20090615

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20090617

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090622

Year of fee payment: 12

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100630

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110101

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100610

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100630