EP0891817A2 - Procédé pour déposition électrostatique - Google Patents

Procédé pour déposition électrostatique Download PDF

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Publication number
EP0891817A2
EP0891817A2 EP98111127A EP98111127A EP0891817A2 EP 0891817 A2 EP0891817 A2 EP 0891817A2 EP 98111127 A EP98111127 A EP 98111127A EP 98111127 A EP98111127 A EP 98111127A EP 0891817 A2 EP0891817 A2 EP 0891817A2
Authority
EP
European Patent Office
Prior art keywords
applicators
particles
charge
powder
electrical charge
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Withdrawn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
EP98111127A
Other languages
German (de)
English (en)
Other versions
EP0891817A3 (fr
Inventor
Gunter Dr.-Ing. Börner
Hans Christoph Dr. Rer.Nat. Dipl.-Chem. Nienburg
Jörg Dr. rer.nat. Sopka
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.)
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Original Assignee
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
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 ABB Research Ltd Switzerland, ABB Research Ltd Sweden filed Critical ABB Research Ltd Switzerland
Publication of EP0891817A2 publication Critical patent/EP0891817A2/fr
Publication of EP0891817A3 publication Critical patent/EP0891817A3/fr
Withdrawn legal-status Critical Current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
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/002—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means comprising means for neutralising the spray of charged droplets or particules
    • B05B5/003—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means comprising means for neutralising the spray of charged droplets or particules by mixing two sprays of opposite polarity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/002—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means comprising means for neutralising the spray of charged droplets or particules
    • B05B5/004—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means comprising means for neutralising the spray of charged droplets or particules by alternating the polarity of the spray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • 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
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/047—Discharge apparatus, e.g. electrostatic spray guns using tribo-charging

Definitions

  • the invention relates to a method for the electrostatic coating of Workpieces with powder materials.
  • Layer thickness is generally less than 500 ⁇ m because the charge already applied powder particles to subsequent powder particles of the same name repulsive. For many technical applications, for example electrical or thermal insulation layers, the layer thickness that can be achieved in this way is not sufficient. A multiple coating with layer internal is then necessary.
  • the invention has for its object to provide a method with which in a Working step a desired greater layer thickness can be achieved.
  • Powder spraying devices suitable for carrying out the method are, for example known from DE 195 42 863 A1.
  • a simultaneous or alternating Spraying of positively charged powder and negatively charged powder can by arranging at least one corona spray gun and at least one tribo spray gun can be achieved.
  • one is earthed Workpiece arranged and there are at least two applicators 1, 2.
  • Figure 1 shows a first method variant in which a one-component coating material 1 by means of two electrostatic, referred to as applicators 1, 2 Application equipment is applied.
  • the applicator 1 sprays positively charged particles of the coating material 1 and the applicator 2 negatively charged particles the workpiece.
  • the applicators 1, 2 work simultaneously. Instead of two applicators can also use several applicators with different particles Apply cargo. By the simultaneous deposition of particles of different electrical charge, the surface charge is lower than with a coating with particles of only one charge. The achievable powder layer thickness is thereby higher.
  • FIG. 2 shows a second variant, two applicators 1, 2 likewise being used simultaneously spray, but a first material component, referred to as coating material 1, e.g. is positively charged, and a second, as a coating material 2 designated material component is negatively charged.
  • a first material component referred to as coating material 1
  • a second as a coating material 2 designated material component is negatively charged.
  • thermoplastics filled with mica are made from thermoplastics filled with mica.
  • At co-powder coating is e.g. a polymer powder with a tribospray gun applied. The powder particles are charged positively. The mica particles are simultaneously e.g. applied with a corona spray gun. With this type of electrostatic powder application negatively charges the mica particles.
  • the Layer composition i.e. the mica content, is determined by coordinating the Powder mass flows controlled.
  • FIG. 3 shows a third variant of the method, the same as for the second variant of the method two different materials with different electrical charges be applied.
  • the alternating coating with positive and negatively charged particles is repeated until the desired total layer thickness is reached. A greater total layer thickness is also achieved here than through Spraying particles of only a uniform charge would be possible.
  • the third method variant can also be used for coating with a one-component Coating material are used, alternating particles of the same type, but with different charges (not in the drawing shown).

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
EP98111127A 1997-07-15 1998-06-17 Procédé pour déposition électrostatique Withdrawn EP0891817A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19730231 1997-07-15
DE19730231A DE19730231A1 (de) 1997-07-15 1997-07-15 Verfahren zum elektrostatischen Beschichten

Publications (2)

Publication Number Publication Date
EP0891817A2 true EP0891817A2 (fr) 1999-01-20
EP0891817A3 EP0891817A3 (fr) 1999-05-26

Family

ID=7835727

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98111127A Withdrawn EP0891817A3 (fr) 1997-07-15 1998-06-17 Procédé pour déposition électrostatique

Country Status (5)

Country Link
US (1) US6032871A (fr)
EP (1) EP0891817A3 (fr)
JP (1) JPH1190309A (fr)
CA (1) CA2243031A1 (fr)
DE (1) DE19730231A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000064592A1 (fr) * 1999-04-27 2000-11-02 Microdose Technologies, Inc. Procede de production de petites parties homogenes de fines, appareil correspondant et articles obtenus
US6428809B1 (en) 1999-08-18 2002-08-06 Microdose Technologies, Inc. Metering and packaging of controlled release medication
WO2005011091A1 (fr) * 2003-07-22 2005-02-03 Robert Bosch Gmbh Procede d'application d'un isolant electrique
WO2010054985A1 (fr) * 2008-11-12 2010-05-20 Chemetall Gmbh Procédé de revêtement de surfaces par des particules, et utilisation des revêtements fabriqués par ce procédé
ITRM20090039A1 (it) * 2009-01-29 2010-07-30 Uni Degli Studi Di Roma To R Vergata Sistema di dispersione di micro o nanoparticelle solide in una fase liquida
US9974909B2 (en) 2010-01-05 2018-05-22 Microdose Therapeutx, Inc. Inhalation device and method
EP4245426A1 (fr) * 2022-03-16 2023-09-20 Enviral Oberflächenveredelung GmbH Technique de revêtement en poudre optimisée pour le revêtement de surfaces métalliques

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US7575784B1 (en) * 2000-10-17 2009-08-18 Nanogram Corporation Coating formation by reactive deposition
US20060147369A1 (en) * 1997-07-21 2006-07-06 Neophotonics Corporation Nanoparticle production and corresponding structures
US20090075083A1 (en) * 1997-07-21 2009-03-19 Nanogram Corporation Nanoparticle production and corresponding structures
US6849334B2 (en) * 2001-08-17 2005-02-01 Neophotonics Corporation Optical materials and optical devices
US6952504B2 (en) * 2001-12-21 2005-10-04 Neophotonics Corporation Three dimensional engineering of planar optical structures
US6919054B2 (en) * 2002-04-10 2005-07-19 Neophotonics Corporation Reactant nozzles within flowing reactors
US20040011901A1 (en) * 2000-07-10 2004-01-22 Rehman William R. Unipolarity powder coating systems including improved tribocharging and corona guns
US6645300B2 (en) 2000-07-11 2003-11-11 Nordson Corporation Unipolarity powder coating systems including improved tribocharging and corona guns
US20030038193A1 (en) * 2000-07-11 2003-02-27 Rehman William R. Unipolarity powder coating systems including improved tribocharging and corona guns
AU2001276859A1 (en) * 2000-07-11 2002-01-21 Nordson Corporation Unipolarity powder coating systems including improved tribocharging and corona guns
JP2002066443A (ja) * 2000-08-29 2002-03-05 Kansai Paint Co Ltd 塗膜形成方法
CN1251809C (zh) * 2000-10-17 2006-04-19 尼奥弗托尼克斯公司 通过反应沉积形成涂覆的装置及方法
CN100484752C (zh) * 2000-10-26 2009-05-06 尼奥弗托尼克斯公司 多层光学结构
US20070087048A1 (en) * 2001-05-31 2007-04-19 Abrams Andrew L Oral dosage combination pharmaceutical packaging
US6917511B1 (en) 2001-08-14 2005-07-12 Neophotonics Corporation Reactive deposition for the formation of chip capacitors
FI118542B (fi) * 2002-03-14 2007-12-14 Metso Paper Inc Pintakäsittelyprosessi
FI121123B (fi) * 2002-03-14 2010-07-15 Metso Paper Inc Menetelmä jatkuvan rainan pinnan päällystämiseksi kuivapäällystysjauheella
US20040159282A1 (en) * 2002-05-06 2004-08-19 Sanner Michael R Unipolarity powder coating systems including improved tribocharging and corona guns
DE10228182C1 (de) * 2002-06-24 2003-10-16 Wulf-Arno Haas Verfahren bzw. Vorrichtung zum Beschichten einer Außenfläche einer Zündspule
US6817553B2 (en) * 2003-02-04 2004-11-16 Efc Systems, Inc. Powder paint spray coating apparatus having selectable, modular spray applicators
US8865271B2 (en) * 2003-06-06 2014-10-21 Neophotonics Corporation High rate deposition for the formation of high quality optical coatings
US7521097B2 (en) * 2003-06-06 2009-04-21 Nanogram Corporation Reactive deposition for electrochemical cell production
US7491431B2 (en) * 2004-12-20 2009-02-17 Nanogram Corporation Dense coating formation by reactive deposition
US20080081112A1 (en) * 2006-09-29 2008-04-03 Paul Brabant Batch reaction chamber employing separate zones for radiant heating and resistive heating
WO2008147878A1 (fr) * 2007-05-22 2008-12-04 The Board Of Trustees Of The University Of Illinois Lampe à décharge à arc et à haute intensité utilisant un revêtement absorbant les ultraviolets
US20090087483A1 (en) * 2007-09-27 2009-04-02 Sison Raymundo A Oral dosage combination pharmaceutical packaging
US8439033B2 (en) 2007-10-09 2013-05-14 Microdose Therapeutx, Inc. Inhalation device
US8413914B2 (en) 2010-03-04 2013-04-09 Hanson Group, Llc Electrostatic fast-set sprayable polymer system and process
RU2567631C2 (ru) * 2010-04-29 2015-11-10 Акцо Нобель Коатингс Интернэшнл Б.В. Способ нанесения порошкового покрытия
US8715787B2 (en) * 2011-05-24 2014-05-06 Alfonz Morav{hacek over (c)}ík Method of making a compact layer of enamel coatings on moulded products
JP5721074B2 (ja) * 2011-09-22 2015-05-20 国立研究開発法人産業技術総合研究所 静電塗装装置
DE102012001563B4 (de) * 2012-01-27 2019-05-09 Dürr Systems Ag Lackierkabine mit einer Beschichtungsmittelleitung und entsprechendes Herstellungsverfahren für die Beschichtungsmittelleitung
WO2014029769A1 (fr) 2012-08-21 2014-02-27 Jotun Powder Coatings (N) As Revêtements en poudre
JP2018069157A (ja) * 2016-10-28 2018-05-10 有光工業株式会社 静電噴霧装置、飛行体、及び静電噴霧方法
CN115106263A (zh) * 2022-07-20 2022-09-27 陈凡 一种可以使涂层满足高压绝缘要求的喷涂方法
KR102588362B1 (ko) * 2022-08-31 2023-10-11 최상일 나노분말을 피도물에 도포하는 장치

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DE2731342A1 (de) * 1977-07-12 1979-01-25 Kurt Weigel Elektrostatische mehrphasen-pulverspruehpistole
JPS60227852A (ja) * 1984-04-26 1985-11-13 Hitachi Plant Eng & Constr Co Ltd 静電農薬散布装置
DE19542863A1 (de) * 1995-11-17 1997-05-22 Abb Research Ltd Pulversprüheinrichtung

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GB8432272D0 (en) * 1984-12-20 1985-01-30 Ici Plc Spraying apparatus
DE3600065A1 (de) * 1986-01-03 1987-07-09 Kurt Weigel Verfahren zur herstellung von kombinierten duroplastischen korona-tribo-pulverlackschichten
EP0437383A1 (fr) * 1990-01-12 1991-07-17 Regie Nationale Des Usines Renault S.A. Procédé et dispositif de peinture électrostatique sur pièces plastiques
ATE121970T1 (de) * 1990-07-25 1995-05-15 Ici Plc Elektrostatische sprühmethode.
US5514423A (en) * 1994-07-05 1996-05-07 Ford Motor Company Electrostatic painting method wherein multiple spray stations having alternating polarities are used to minimize the residual charge on a plastic substrate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731342A1 (de) * 1977-07-12 1979-01-25 Kurt Weigel Elektrostatische mehrphasen-pulverspruehpistole
JPS60227852A (ja) * 1984-04-26 1985-11-13 Hitachi Plant Eng & Constr Co Ltd 静電農薬散布装置
DE19542863A1 (de) * 1995-11-17 1997-05-22 Abb Research Ltd Pulversprüheinrichtung

Non-Patent Citations (1)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000064592A1 (fr) * 1999-04-27 2000-11-02 Microdose Technologies, Inc. Procede de production de petites parties homogenes de fines, appareil correspondant et articles obtenus
US6428809B1 (en) 1999-08-18 2002-08-06 Microdose Technologies, Inc. Metering and packaging of controlled release medication
US6702683B2 (en) 1999-08-18 2004-03-09 Microdose Technologies, Inc. Metering and packaging of controlled release medication
US7404968B2 (en) 1999-08-18 2008-07-29 Microdose Technologies, Inc. Metering and packaging of controlled release medication
WO2005011091A1 (fr) * 2003-07-22 2005-02-03 Robert Bosch Gmbh Procede d'application d'un isolant electrique
US7572488B2 (en) 2003-07-22 2009-08-11 Robert Bosch Gmbh Method for applying an electrical insulation
WO2010054985A1 (fr) * 2008-11-12 2010-05-20 Chemetall Gmbh Procédé de revêtement de surfaces par des particules, et utilisation des revêtements fabriqués par ce procédé
ITRM20090039A1 (it) * 2009-01-29 2010-07-30 Uni Degli Studi Di Roma To R Vergata Sistema di dispersione di micro o nanoparticelle solide in una fase liquida
US9974909B2 (en) 2010-01-05 2018-05-22 Microdose Therapeutx, Inc. Inhalation device and method
US10434267B2 (en) 2010-01-05 2019-10-08 Microdose Therapeutx, Inc. Inhalation device and method
EP4245426A1 (fr) * 2022-03-16 2023-09-20 Enviral Oberflächenveredelung GmbH Technique de revêtement en poudre optimisée pour le revêtement de surfaces métalliques

Also Published As

Publication number Publication date
EP0891817A3 (fr) 1999-05-26
DE19730231A1 (de) 1999-01-21
CA2243031A1 (fr) 1999-01-15
JPH1190309A (ja) 1999-04-06
US6032871A (en) 2000-03-07

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