EP2221116A1 - Method for applying a thermosetting resin, in particular a polyester or vinyl resin for a gel coat on the surface of a moulded part - Google Patents

Method for applying a thermosetting resin, in particular a polyester or vinyl resin for a gel coat on the surface of a moulded part Download PDF

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Publication number
EP2221116A1
EP2221116A1 EP10000125A EP10000125A EP2221116A1 EP 2221116 A1 EP2221116 A1 EP 2221116A1 EP 10000125 A EP10000125 A EP 10000125A EP 10000125 A EP10000125 A EP 10000125A EP 2221116 A1 EP2221116 A1 EP 2221116A1
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EP
European Patent Office
Prior art keywords
spray
resin
reaction resin
electrostatic field
gelcoat
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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.)
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EP10000125A
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German (de)
French (fr)
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EP2221116B1 (en
Inventor
Marcus Schröbel
Sven Glaser
Dirk Punke
Lars Franke
Peter Kornas
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.)
Buefa Gelcoat Plus & Co KG GmbH
Buefa Gelcoat Plus & Co K GmbH
Buefa Gelcoat Plus & Co KG GmbH
Original Assignee
Buefa Gelcoat Plus & Co KG GmbH
Buefa Gelcoat Plus & Co K GmbH
Buefa Gelcoat Plus & Co KG GmbH
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Publication date
Application filed by Buefa Gelcoat Plus & Co KG GmbH, Buefa Gelcoat Plus & Co K GmbH, Buefa Gelcoat Plus & Co KG GmbH filed Critical Buefa Gelcoat Plus & Co KG GmbH
Priority to PL10000125T priority Critical patent/PL2221116T3/en
Publication of EP2221116A1 publication Critical patent/EP2221116A1/en
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Publication of EP2221116B1 publication Critical patent/EP2221116B1/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
    • 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
    • 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
    • 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
    • B05D2508/00—Polyesters

Definitions

  • the invention relates to a process for the spray application of a reaction resin, in particular polyester or vinyl resin, for a gelcoat on the surface of a molded part.
  • reaction resins for a gelcoat takes place with increasing size of the molded parts to be coated more and more frequently in spray processes.
  • the resins for a gelcoat are atomized pneumatically or hydraulically via nozzles. This makes it possible to evenly coat large areas in a short time.
  • the invention has for its object to reduce the material losses caused by the "overspray effect".
  • the reaction resin used to make a gelcoat is atomized via a die.
  • An electric field directs the coating material, the sprayed reaction resin, to the molding or workpiece.
  • the electric field is provided by a high voltage generator.
  • the resulting electric field lines emerge from a pointed electrode which is located at a short distance from the spray nozzle spraying the reaction resin.
  • the well-worn field lines then run to the earthed molded part.
  • the resin droplets for the gelcoat which are accelerated by the atomization move along these field lines, whereby an undesirable "overspray effect" is largely reduced.
  • the inventive processing of the reaction resin for a gelcoat in the electrostatic process allows the construction of a layer thickness of up to 1000 microns in a single operation.
  • a uniform coating of the molded part is ensured even in areas with sophisticated geometries, avoiding local accumulation of resin in corners with the resulting damage patterns. Also negligence in the spray processing are compensated by the electrostatic process.
  • an output voltage in the range up to 200 kV DC is particularly advantageous.
  • Electrostatic spray guns or heads with electrostatic atomization or electrostatic effect on the resin to be sprayed with internal or external charging can be used on the plant side.
  • At least one of its electrical conductivity-increasing additive is added to the reaction resin prior to its discharge by spraying or atomizing.
  • Such conductivity additives are, for example, alcohols, aldehydes, carboxylic acids and ketones. Also also water, but also metal compounds and metal fillers like Aluminum shot. Coal and graphite fibers can also form conductivity additives.
  • reaction resins added pigments, for example, an addition of a 10 to 20% pigment paste. Due to the large number of organic and inorganic pigments used to represent an extensive color palette for the gelcoat, there are also considerable effects on the conductivity of the reaction resin to be applied.
  • a radical crosslinking of the resin can be initiated by the decomposition of a peroxide.
  • the radicals formed thereby also greatly increase the conductivity of the applied gelcoat; depending on the type and concentration of the peroxide used.
  • An advantageous electrostatic processability is u. a. with BYK ES 80 in concentrations between 0.05 and 1% by weight, depending e.g. from the pigmentation of the gel coat.
  • BYK ES 80 is the solution of an alkylolammonium salt of an unsaturated carboxylic acid ester.
  • the reaction resin In order to allow application of the reaction resin in the specified layer thicknesses and to prevent leakage of the high-stratified material on vertical surfaces, the reaction resin is thixotroped prior to its spray application. However, the thixotropic behavior is accompanied by an increase in the viscosity of the reaction resin.
  • the reaction resin for a gelcoat is, as in previously customary methods, atomized via a nozzle 1.
  • An electric field which directs the sprayed coating material to the molded part 2, is provided by a high voltage generator, not shown here.
  • the resulting electric field emerges from a tip electrode 3 located a short distance from the nozzle 1 and then passes to the grounded mold part 2.
  • the gelcoat resin droplets accelerated by the atomization travel along the electric field field lines.
  • the spray 4 is negatively charged by the electric field, as indicated here.
  • the corresponding opposite pole of the electric field is connected to the molded part, which is indicated here by a positive pole.

Abstract

The method involves generating electrostatic field in a region of a spray nozzle (1) used for spray application of a thermosetting resin. Spray jet emitted from the spray nozzle is directed with respect to surface of a molded part (2). An antipole of the electrostatic field is applied on the molded part and/or at the molded part surface, on which gel coat is to be applied. The thermosetting resin is thixotroped and heated using a continuous-flow heater before applying the thermosetting resin on the gel coat.

Description

Die Erfindung betrifft ein Verfahren zur Sprühapplikation eines Reaktionsharzes, insbesondere Polyester- oder Vinylharzes, für ein Gelcoat auf der Oberfläche eines Formteils.The invention relates to a process for the spray application of a reaction resin, in particular polyester or vinyl resin, for a gelcoat on the surface of a molded part.

Die Applikation von Reaktionsharzen für ein Gelcoat erfolgt mit zunehmender Größe der zu beschichtenden Formteile immer häufiger in Sprühverfahren. Die Harze für ein Gelcoat werden pneumatisch oder hydraulisch über Düsen zerstäubt. Dadurch ist es möglich, große Flächen in kurzer Zeit gleichmäßig zu beschichten.The application of reaction resins for a gelcoat takes place with increasing size of the molded parts to be coated more and more frequently in spray processes. The resins for a gelcoat are atomized pneumatically or hydraulically via nozzles. This makes it possible to evenly coat large areas in a short time.

Dabei entstehen nachteilige Materialverluste durch Tropfen des Sprühnebels, die sich nicht auf dem zu beschichtenden Objekt niederschlagen, bzw. nicht auf der zu beschichtenden Oberfläche des Formteiles abscheiden. Ein solcher "Overspray-Effekt" tritt verstärkt in den Ecken und Randbereichen des Formteiles auf und verursacht außerdem unerwünschte Verschmutzungen der apparativen Installationen für die Sprühanlage.In this case, adverse material losses caused by drops of the spray, which do not precipitate on the object to be coated, or do not deposit on the surface to be coated of the molded part. Such an "overspray effect" occurs increasingly in the corners and edge regions of the molded part and also causes undesirable contamination of the equipment installations for the spray system.

Der Erfindung liegt die Aufgabe zugrunde, die durch den "Overspray-Effekt" bewirkten Materialverluste zu verringern.The invention has for its object to reduce the material losses caused by the "overspray effect".

Diese Aufgabe ist durch die Merkmale des Patentanspruches 1 gelöst. Weiterbildungen und vorteilhafte Ausgestaltungen des Verfahrens zur Sprühapplikation eines Gelcoats ergeben sich aus den Ansprüchen 2 bis 7.This object is solved by the features of claim 1. Further developments and advantageous embodiments of the method for spray application of a gelcoat result from the claims 2 to 7.

Das zur Herstellung eines Gelcoats verwendete Reaktionsharz wird über eine Düse zerstäubt. Ein elektrisches Feld dirigiert das Beschichtungsmaterial, das versprühte Reaktionsharz, zum Formteil bzw. Werkstück. Das elektrische Feld wird durch einen Hochspannungsgenerator bereitgestellt. Die entstehenden elektrischen Feldlinien treten aus einer spitzen Elektrode aus, die in geringer Entfernung zur das Reaktionsharz versprühenden Düse angeordnet ist. Die ausgetretenen Feldlinien verlaufen dann zum geerdeten Formteil. Die durch die Verdüsung beschleunigten Harztröpfchen für das Gelcoat bewegen sich entlang dieser Feldlinien, wodurch ein unerwünschter "Overspray-Effekt" weitgehend vermindert wird. Die erfindungsgemäße Verarbeitung des Reaktionsharzes für ein Gelcoat im elektrostatischen Verfahren ermöglicht den Aufbau einer Schichtstärke von bis zu 1000 µm in einem Arbeitsgang.The reaction resin used to make a gelcoat is atomized via a die. An electric field directs the coating material, the sprayed reaction resin, to the molding or workpiece. The electric field is provided by a high voltage generator. The resulting electric field lines emerge from a pointed electrode which is located at a short distance from the spray nozzle spraying the reaction resin. The well-worn field lines then run to the earthed molded part. The resin droplets for the gelcoat which are accelerated by the atomization move along these field lines, whereby an undesirable "overspray effect" is largely reduced. The inventive processing of the reaction resin for a gelcoat in the electrostatic process allows the construction of a layer thickness of up to 1000 microns in a single operation.

Es ist eine gleichmäßige Beschichtung des Formteils auch in Bereichen mit anspruchsvollen Geometrien gewährleistet, wobei lokale Harzanhäufungen in Ecken mit den dadurch entstehenden Schadensbildern vermieden werden. Auch Nachlässigkeiten bei der Sprühverarbeitung werden durch das elektrostatische Verfahren kompensiert.A uniform coating of the molded part is ensured even in areas with sophisticated geometries, avoiding local accumulation of resin in corners with the resulting damage patterns. Also negligence in the spray processing are compensated by the electrostatic process.

Zur Erzeugung des elektrostatischen Feldes ist eine Ausgangsspannung im Bereich bis 200 kV DC negativ besonders vorteilhaft.To generate the electrostatic field, an output voltage in the range up to 200 kV DC is particularly advantageous.

Eingesetzt werden können auf der Anlagenseite Elektrostatik-Sprühpistolen oder- Köpfe mit elektrostatischer Zerstäubung oder elektrostatischer Wirkung auf das zu versprühende Harz mit interner oder externer Aufladung, wie beispielsweise Airless-Verfahren, luftunterstützes Airless-Verfahren, luftzerstäubende, rotierende Sprühglocke, Sprühscheiben oder Sprühteller.Electrostatic spray guns or heads with electrostatic atomization or electrostatic effect on the resin to be sprayed with internal or external charging, such as airless method, air-assisted airless method, air-atomizing, rotating spray bell, spray discs or spray plate, can be used on the plant side.

Mit besonderem Vorteil wird dem Reaktionsharz vor seiner Austragung durch Verspritzen bzw. Verdüsen wenigstens ein seine elektrische Leitfähigkeit erhöhendes Additiv zugesetzt. Derartige Leitfähigkeitsadditive sind zum Beispiel Alkohole, Aldehyde, Karbonsäuren und Ketone. Außerdem auch noch Wasser, aber auch Metallverbindungen und Metallfüllstoffe wie Aluminiumgrieß. Auch Kohle- und Grafitfasern können Leitfähigkeitsadditive bilden.With particular advantage, at least one of its electrical conductivity-increasing additive is added to the reaction resin prior to its discharge by spraying or atomizing. Such conductivity additives are, for example, alcohols, aldehydes, carboxylic acids and ketones. Also also water, but also metal compounds and metal fillers like Aluminum shot. Coal and graphite fibers can also form conductivity additives.

Besonders vorteilhaft sind den Reaktionsharzen zugesetzte Pigmente, beispielsweise eine Zugabe einer 10 bis 20-%igen Pigmentpaste. Durch die Vielzahl der eingesetzten organischen und anorganischen Pigmente zur Darstellung einer umfangreichen Farbpalette für das Gelcoat ergeben sich ebenfalls nicht unerhebliche Einwirkungen auf die Leitfähigkeit des zu applizierenden Reaktionsharzes.Particularly advantageous are the reaction resins added pigments, for example, an addition of a 10 to 20% pigment paste. Due to the large number of organic and inorganic pigments used to represent an extensive color palette for the gelcoat, there are also considerable effects on the conductivity of the reaction resin to be applied.

Eine radikalische Vernetzung des Harzes lässt sich durch den Zerfall eines Peroxids initiieren. Die dabei gebildeten Radikale erhöhen ebenfalls in starkem Maße die Leitfähigkeit des applizierten Gelcoats; in Abhängigkeit von der Art und Konzentration des eingesetzten Peroxids.A radical crosslinking of the resin can be initiated by the decomposition of a peroxide. The radicals formed thereby also greatly increase the conductivity of the applied gelcoat; depending on the type and concentration of the peroxide used.

Die Einwirkung der Verarbeitung im elektrostatischen Verfahren lässt sich somit durch die Beeinflussung der Leitfähigkeit des Reaktionsharzes entsprechend steuern. Eine vorteilhafte elektrostatische Verarbeitbarkeit wird u. a. mit BYK ES 80 in Konzentrationen zwischen 0,05 und 1 Gew%, abhängig z.B. von der Pigmentierung des Gelcoats, erzielt. BYK ES 80 ist die Lösung eines Alkylolammoniumsalzes eines ungesättigten sauren Carbonsäureesters.The effect of processing in the electrostatic process can thus be controlled accordingly by influencing the conductivity of the reaction resin. An advantageous electrostatic processability is u. a. with BYK ES 80 in concentrations between 0.05 and 1% by weight, depending e.g. from the pigmentation of the gel coat. BYK ES 80 is the solution of an alkylolammonium salt of an unsaturated carboxylic acid ester.

Das elektrostatische Versprühen von Lacken ist bekannt. Es lässt sich jedoch nicht ohne weiteres auf die Verarbeitung von Reaktionsharzen übertragen. Mit versprühtem Lack ist eine Schichtstärke von lediglich etwa 15 µm erreichbar. Zur Herstellung eines Gelcoats ist, wie bereits erwähnt, demgegenüber eine Schichtstärke von mindestens 650 µm aufzubauen. Erst dadurch ist ein ausreichendes Reaktionsvolumen geschaffen, welches das Entstehen einer exothermen Vernetzungsreaktion des eingesetzten Reaktionsharzes möglich macht.The electrostatic spraying of paints is known. However, it can not be easily transferred to the processing of reaction resins. With sprayed paint a layer thickness of only about 15 microns can be achieved. For the production of a gel coat, as already mentioned, a layer thickness of at least 650 μm must be built up. Only then is a sufficient reaction volume created, which makes possible the emergence of an exothermic crosslinking reaction of the reaction resin used.

Unterschreitungen der empfohlenen Schichtstärke für ein Reaktionsharz führen zu einer Unterhärtung oder sogar zum Austrocknen des daraus gebildeten Gelcoats, denn der Reaktionsverdünner verdunstet relativ rasch, so dass eine vollständige Vernetzung der Moleküle des Reaktionsharzes nicht mehr möglich ist. Von der aufgetragenen Schichtstärke sind sämtliche Eigenschaften des entstehenden Gelcoats direkt abhängig.Underruns of the recommended layer thickness for a reaction resin lead to undercuring or even drying of the Gelcoats formed therefrom, because the Reaktionsverdünner evaporates relatively quickly, so that a complete crosslinking of the molecules of the reaction resin is no longer possible. From the applied layer thickness, all properties of the resulting gelcoat are directly dependent.

Um ein Auftragen des Reaktionsharzes in den angegebenen Schichtstärken zu ermöglichen und ein Ablaufen des schichtstarken Materials an senkrechten Flächen zu vermeiden, wird das Reaktionsharz vor seiner Sprühapplikation thixotropiert. Das thixotrope Verhalten wird jedoch von einem Anstieg der Viskosität des Reaktionsharzes begleitet.In order to allow application of the reaction resin in the specified layer thicknesses and to prevent leakage of the high-stratified material on vertical surfaces, the reaction resin is thixotroped prior to its spray application. However, the thixotropic behavior is accompanied by an increase in the viscosity of the reaction resin.

Dieser Anstieg der Viskosität kann die Verarbeitung durch Sprühapplikation behindern bzw. nachteilig beeinflussen. Um dies zu vermeiden, wird das Reaktionsharz vor seiner Sprühapplikation erwärmt. Für die Erwärmung kann beispielsweise ein Durchlauferhitzer verwendet werden. Die optimale Temperatur ist systemabhängig und liegt zwischen 20° und 30°C. Gute Ergebnisse werden z.B. bei 24° erzielt. Die Viskosität wird mit Prüfmittel "Brookfield RV/DV-II Spd. 4/4 rpm (20°) mit 13,5 +/- 2,5 Pas für das nicht pigmentierte Gelcoat bestimmt.This increase in viscosity may hinder or adversely affect processing by spray application. To avoid this, the reaction resin is heated prior to its spray application. For heating, for example, a water heater can be used. The optimum temperature depends on the system and is between 20 ° and 30 ° C. Good results are e.g. achieved at 24 °. Viscosity is determined using the Brookfield RV / DV-II Spd. 4/4 rpm (20 °) test as 13.5 +/- 2.5 Pas for the non-pigmented gelcoat.

In der Zeichnung ist ein Schema der elektrostatischen Verfahrenstechnik dargestellt.In the drawing, a scheme of the electrostatic process engineering is shown.

Das Reaktionsharz für ein Gelcoat wird, wie in bisher üblichen Verfahren, über eine Düse 1 zerstäubt. Ein elektrisches Feld, welches das versprühte Beschichtungsmaterial zum Formteil 2 dirigiert, wird durch einen hier nicht weiter dargestellten Hochspannungsgenerator bereitgestellt. Das entstehende elektrische Feld tritt aus einer Spitzenenelektrode 3, die in geringer Entfernung zur Düse 1 angeordnet ist, aus, und verläuft dann zum geerdeten Formteil 2. Die durch die Verdüsung beschleunigten Harztröpfchen für das Gelcoat bewegen sich entlang der das elektrische Feld bildenden Feldlinien.The reaction resin for a gelcoat is, as in previously customary methods, atomized via a nozzle 1. An electric field, which directs the sprayed coating material to the molded part 2, is provided by a high voltage generator, not shown here. The resulting electric field emerges from a tip electrode 3 located a short distance from the nozzle 1 and then passes to the grounded mold part 2. The gelcoat resin droplets accelerated by the atomization travel along the electric field field lines.

Der Sprühnebel 4 ist durch das elektrische Feld negativ geladen, wie es hier angedeutet ist. Der entsprechende Gegenpol des elektrischen Feldes ist an das Formteil angeschlossen, welches hier durch einen positiven Pol angedeutet ist.The spray 4 is negatively charged by the electric field, as indicated here. The corresponding opposite pole of the electric field is connected to the molded part, which is indicated here by a positive pole.

Claims (7)

Verfahren zur Sprühapplikation eines Reaktionsharzes, insbesondere Polyester- oder Vinylharzes, für ein Gelcoat auf der Oberfläche eines Formteils,
dadurch gekennzeichnet,
dass im Bereich einer für die Sprühapplikation verwendeten Sprühdüse (1) ein elektrostatisches Feld erzeugt wird, dass der aus der Sprühdüse (1) abgestrahlte Sprühstrahl durch das elektrostatische Feld hindurch gegen die Oberfläche des Formteils (2) gerichtet wird und dass an das Formteil (2), bzw. an dessen Oberfläche, auf welcher das Gelcoat zu applizieren ist, ein Gegenpol des elektrostatischen Felds angelegt wird.Process for the spray application of a reaction resin, in particular polyester or vinyl resin, for a gelcoat on the surface of a molding,
characterized,
in that an electrostatic field is generated in the region of a spray nozzle (1) used for the spray application, that the spray jet emitted from the spray nozzle (1) is directed through the electrostatic field towards the surface of the molding (2) and that the molding (2 ), or on its surface on which the gelcoat is to be applied, a counter pole of the electrostatic field is applied. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass zur Erzeugung des elektrostatischen Felds eine Ausgangsspannung im Bereich bis 200 kV DC negativ verwendet wird.A method according to claim 1, characterized in that for generating the electrostatic field, an output voltage in the range up to 200 kV DC is used negatively. Verfahren nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass dem Reaktionsharz vor der Austragung wenigstens ein seine elektrische Leitfähigkeit erhöhendes Additiv zugesetzt wird.Method according to one of claims 1 and 2, characterized in that the reaction resin before discharge at least one of its electrical conductivity-increasing additive is added. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Reaktionsharz vor seiner Sprühapplikation thixotropiert wird.Method according to one of claims 1 to 3, characterized in that the reaction resin is thixotroped before its spray application. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Reaktionsharz vor seiner Sprühapplikation erwärmt wird.Method according to one of claims 1 to 4, characterized in that the reaction resin is heated prior to its Sprühapplikation. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass für die Erwärmung ein Durchlauferhitzer verwendet wird.A method according to claim 5, characterized in that for heating a water heater is used. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Reaktionsharz durch Zugabe einer 10 bis 20-%igen Pigmentpaste eingefärbt wird.Method according to one of claims 1 to 6, characterized in that the reaction resin is colored by adding a 10 to 20% pigment paste.
EP10000125A 2009-02-20 2010-01-08 Method for applying a thermosetting resin, in particular a polyester or vinyl resin for a gel coat on the surface of a moulded part Not-in-force EP2221116B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10000125T PL2221116T3 (en) 2009-02-20 2010-01-08 Method for applying a thermosetting resin, in particular a polyester or vinyl resin for a gel coat on the surface of a moulded part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009009941A DE102009009941A1 (en) 2009-02-20 2009-02-20 Process for the application of a reaction resin, in particular a polyester or vinyl resin for a gelcoat on the surface of a molded part

Publications (2)

Publication Number Publication Date
EP2221116A1 true EP2221116A1 (en) 2010-08-25
EP2221116B1 EP2221116B1 (en) 2011-10-26

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EP10000125A Not-in-force EP2221116B1 (en) 2009-02-20 2010-01-08 Method for applying a thermosetting resin, in particular a polyester or vinyl resin for a gel coat on the surface of a moulded part

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EP (1) EP2221116B1 (en)
AT (1) ATE530261T1 (en)
DE (1) DE102009009941A1 (en)
ES (1) ES2376821T3 (en)
PL (1) PL2221116T3 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1571125A1 (en) * 1961-03-06 1970-11-26 Ransburg Electro Coating Corp Process for the electrostatic coating of objects
US3644132A (en) * 1968-10-21 1972-02-22 Owens Corning Fiberglass Corp Conductive mold comprising a nonconducting supporting wall and a conductive gel coat applied thereto
DE4425655A1 (en) * 1994-07-20 1996-01-25 Lucon Dipl Ing Juergen Lutterm Electrostatic spray coating appts. for conducting workpieces
US5824403A (en) * 1996-04-15 1998-10-20 Pella Corporation Electrostatically coated pultrusions and methods of making
WO2001085360A2 (en) * 2000-05-11 2001-11-15 The Queen's University Of Belfast Coating process
WO2002011893A1 (en) * 2000-08-10 2002-02-14 Inteko S.R.L. Method for finishing a manufactured article by powder painting
WO2006085114A1 (en) * 2005-02-14 2006-08-17 The University Of Nottingham Deposition of polymeric films

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1571125A1 (en) * 1961-03-06 1970-11-26 Ransburg Electro Coating Corp Process for the electrostatic coating of objects
US3644132A (en) * 1968-10-21 1972-02-22 Owens Corning Fiberglass Corp Conductive mold comprising a nonconducting supporting wall and a conductive gel coat applied thereto
DE4425655A1 (en) * 1994-07-20 1996-01-25 Lucon Dipl Ing Juergen Lutterm Electrostatic spray coating appts. for conducting workpieces
US5824403A (en) * 1996-04-15 1998-10-20 Pella Corporation Electrostatically coated pultrusions and methods of making
WO2001085360A2 (en) * 2000-05-11 2001-11-15 The Queen's University Of Belfast Coating process
WO2002011893A1 (en) * 2000-08-10 2002-02-14 Inteko S.R.L. Method for finishing a manufactured article by powder painting
WO2006085114A1 (en) * 2005-02-14 2006-08-17 The University Of Nottingham Deposition of polymeric films

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ES2376821T3 (en) 2012-03-20
PL2221116T3 (en) 2012-06-29
ATE530261T1 (en) 2011-11-15
EP2221116B1 (en) 2011-10-26
DE102009009941A1 (en) 2010-09-02

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