US3902455A - Electrostatic powder coating installation - Google Patents

Electrostatic powder coating installation Download PDF

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Publication number
US3902455A
US3902455A US486182A US48618274A US3902455A US 3902455 A US3902455 A US 3902455A US 486182 A US486182 A US 486182A US 48618274 A US48618274 A US 48618274A US 3902455 A US3902455 A US 3902455A
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US
United States
Prior art keywords
filter
cabin
band
filter band
installation
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
US486182A
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English (en)
Inventor
Ernst Lehmann
Robert Prinzing
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.)
Gema Switzerland GmbH
Original Assignee
Gema AG
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Filing date
Publication date
Application filed by Gema AG filed Critical Gema AG
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Publication of US3902455A publication Critical patent/US3902455A/en
Assigned to RANSBURG-GEMA AG, A SWISS CORP. reassignment RANSBURG-GEMA AG, A SWISS CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GEMA AG APPARATEBAU, A SWISS CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/43—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by filtering the air charged with excess material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/43—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by filtering the air charged with excess material
    • B05B14/435—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by filtering the air charged with excess material with means for cleaning the filters by gas flow, e.g. blasts of air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/07—Hoods

Definitions

  • the present invention relates to a new and improved construction of electrostatic powder coating installation of the type equipped with a cabin intended to house the articles to be coated, the internal space of the cabin being connected with a suction device, and there being further provided a filter which delimits by means of one face or side thereof a portion of the internal space of the cabin and the other face of such filter confronting the inlet of the suction device.
  • Another and more specific object of the present invention aims at the provision of a new and improved construction of installation of the previously mentioned type which satisfies both requirements, namely, on the one hand cleaning of the installation and, on the other hand, that of reclaiming the excess powder material.
  • the proposed apparatus construction of the invention is manifested by the features that a cleaning device is associated with the filter and movable relative thereto, this cleaning device removing from the filter any excess powder which has deposited thereon and delivering such to a conventional collecting container.
  • the filter it is preferred to construct the filter as an essentially horizontal filter band forming the floor of the inner space of the cabin, and which filter band can be drawn by a drive through the cabin and moved past the cleaning device. If the installation is equipped with a conveyor device by means of which the articles or objects to be coated, hereinafter simply referred to as the articles, are conveyed through the cabin, then it is advantageous if the throughpass direction of the filter band is opposite to the conveying direction of the articles.
  • the filter band can be constructed as an endless revolving filter band, the one run of which confronts the internal space of the cabin.
  • Two guide rails of substantially U- shaped cross-section, and which engage by means of their legs the sideor lengthwise edges of the filter band, can serve to guide the filter band through the cabin and at the same time prevent any fluttering thereof under the action of the suction device, which again ensures for an undisturbed deposition of the excess powder material upon the filter band,
  • FIG. 1 is a schematic crosssectional view through a powder coating installation operating according to a throughpass technique
  • FIG. 2 is a schematic fragmentary sectional view of the arrangement shown in FIG. 1, taken substantially along the line II-II thereof;
  • FIG. 3 is a longitudinal sectional view similar to the showing of FIG. 2 through an embodiment wherein the filter band is constituted by an endless revolving band;
  • FIG. 4 is a variant construction of cleaning device which follows the discharge end of the filter band
  • FIG. 5 illustrates a further variant construction of cleaning device which follows the discharge end of the filter band
  • FIG. 6 is schematic plan view of the floor of the cabin of the arrangement of FIG. 1 revealing the shape of the guides for the filter band.
  • FIG. 1 the exemplary illustrated installation or apparatus 10 depicted in FIG. 1 will be understood to possess a cabin or compartment 11 in the form of a lengthwise extending tunnel, the ceiling Ilu of which possesses a lengthwise extending slot I2 through which piercingly extends the suspension means, for instance in the form of hooks 13, of a conveying device 15 which is guided above the cabin ceiling Ila in a hollow rail 14.
  • the articles 16 which areto be coated are suspended at the hooks 13.
  • the one side wall 17 of the cabin 1] possesses one or a number of windows 18 or equivalent structure through which extends the mouth of a coating pistol or gun 19.
  • the coating pistol I9 is connected in turn with a suitable voltage source 20 and also with a supply container 21 in which there is generated a suspension of the coating powder in air by means of a blower 22, this suspension being delivered to each coating gun 19 through the agency of a hose 23.
  • the powder particles are electrostatically charged (the high-voltage source needed for this purpose preferably being mounted in the pistol l9) and are then attracted to the relevant article 16 which is grounded via the hook l3 and remain adhering thereat.
  • the floor of the cabin I1 is constructed as a doublewall structure. and specifically the wall confronting the interior or inside of the cabin 11 consists of a filter 24 supported upon a supporting grid 49, for instance a wire grid. and which filter, as will be explained more fully hereinafter, can possess a band-shaped configuration.
  • the cabin II is operatively coupled with a suction device 25, the suction conduit 28 of which emanates from the intermediate space 26 between the filter 24 and the bottom wall 27 of the cabin associated with such filter.
  • the suction conduit or line 28 leads to a filter compartment 29 equipped with a heavy duty filter 30 and subjected to the action of a powerful suction blower 31.
  • the air sucked-up by the suction blower 31 enters through the window 18 or through the inlet openings 32 leading to the cabin ll, thereafter is conducted through the filter 24, through the suction conduit or line 28 and through the heavy duty filter 30.
  • This air initially brings about that the portion of coating material which does not arrive at the article 16 is immediately thinned and in this thinned condition arrives at the filter 24.
  • 90% to 95% of the aforementioned portion of coating material is held back, whereas the air with the residual portion of coating material impinges at the heavy duty filter 30.
  • this filter there occurs'an extensive cleaning of the air to a degree which permits expelling of the air into the surroundings without any problem.
  • the permeability of the filter 24 with regard to the employed coating material only need be chosen such that there can be reclaimed sufficient coating material in order to maintain the coating operation within economical limits whereas the permeability of the heavy duty filter 30 depends upon the permissible residual contamination of the air blown-out by the suction blower 31.
  • FIG; 2 such embodiment of the invention has been schematically illustrated.
  • a supply of filter material of a width corresponding to the width of the cabin I1 is drawn-off a supply roll 33 and is guided about a dancer roll 34 and a deflecting roll or roller 35 before it is guided at the guide rails 36 (FIG. 1 of substantially U-shaped cross-section in the direction of the arrow 24' along its length through the cabin II.
  • the conveyor or conveying device 15 conducts the articles 16 through the cabin 11 in the direction of the arrow 15.
  • the filter 24 departs from the interior of the cabin 11 at the height of the inlet opening 32, and at that location is'defl'ected by a driven withdrawal roller or roll 37, then is guided about two deflecting rollers 38, before it is again wound-up at a receiving or take-up roller 39. Between both of the deflecting rollers or rolls 38 there is provided, for instance, a blower nozzle 40 which easily blows through the filter band 24 and thus frees the same of any deposited coating material, which then collects at a catch or collecting container 41 which surrounds the withdrawal device,
  • the filter 24 is constructed as an endless, revolving driven band, the upper run of which confronts the inside of the cabin 11.
  • This band is guided about two large deflecting rolls 42, 43, wherein the deflecting roll 43 is constructed as a hollow perforated roller or drum.
  • the deflecting roll 43 is constructed as a hollow perforated roller or drum.
  • An air conduit 46 opens into the section which is left free by the body 44, so that air can be easily blown through the filter band 24 during the time that it passes about the hollow perforated drum 43 and such filter band is freed from the adhering coating powder which then again drops into the collecting or catch container 41.
  • the nature of the cleaning device associated with the withdrawal device for the filter band 24 is of course dependent upon the properties of the filter band 24 itself as well as the nature of the coating material which is used.
  • cleaning of the filter band 24 occurs between both of the deflecting rolls or rollers 38 by means of an oppositely rotating and driven brush roller 47 which wipes across the entire width of the filter band 24.
  • FIG. 5 there is provided a wide mouthblower nozzle 40' at one side or face of the filter band 24, whereas at the other side or face of such filter band there is arranged a rotating beater roller 48 which subjects the throughpassing filter band 24 to a beating action which favors the release of the coating material adhering to the filter band 24.
  • FIG. 6 there is illustrated a plan view of the side of the cabin floor which confronts the inside of the cabin 11, and from which it will be recognized that the width of the legs 36a of the guide rails 36 and which engage over the side edges of the filter band 24 decrease in the throughpass direction 24 of the filter band. Consequently, there is achieved the result that the excess coating material which deposits upon the filter band 24 cannot penetrate between the legs 36a of the guide rails 36 and possibly plasticize at that location and block the filter band 24.
  • the reclaiming of the excess coating material by means of a high-voltage alternating-current field in contrast to the heretofore discussed cleaning devices possesses the advantage that even in the case of extremely fine grain coating materials (with particle or grain sizes of a few microns) there is not present any danger of dust turbulence.
  • the component 40' of FIG. 5 can be constituted as an electrostatic repulsion electrode, for instance a Masuda-type repulsion electrode.
  • Useful as the filter material in the simplest case is a reinforced cellulose web or fleece or however a fabric or textile structure formed of synthetic fibers or asbestos.
  • the described installation permits changing-over from one coating material to another without any problems because the location at which there begins the reclaiming of the excess coating material is arranged at the direct neighborhood of the articles to be coated, that is to say, in the cabin 11, and not as was the case for the conventional installations first at the neighborhood of the suction blower.
  • the filter band can be drawn through the cabin it is to be understood that it is of course readily possible to also provide a cleaning device which can be moved relative to the cabin and which continuously wipes across the filter band which in this case is stationary.
  • This cleaning device ensures not only for the reclaiming or reobtaining of the excess powder which has been deposited upon the filter band but also the maintenance of an essentially uniform permeability of the filter, so that the negative pressure in the cabin is maintained over longer periods of time.
  • the filter band similar to the exemplary embodiment of FIG. 2, can be paid-off a supply roller and during each change of the employed coating material can be further ad vanced in increments or steps, whereby then the previously used section of the filter band can be thrown away. In this way the cleaning operation is also considerably simplified.
  • An electrostatic powder coating installation comprising a cabin having an internal compartment and intended to receive the articles to be coated, a suction device operatively connected with the internal compartment of said cabin, said suction device having an inlet, a filter having a first face bounding part of the internal compartment of said cabin and another face confronting the inlet of said suction device, a cleaning device operatively associated with said filter, said cleaning device and filter being relatively movable with respect to one another, a collecting container, said cleaning device removing excess powder which has deposited upon said filter and delivering such to said collecting container, said filter comprising a substantially horizontal filter band forming the floor of the internal compartment of the cabin, drive means for advancing the filter band through the cabin and for moving such past the cleaning device, said filter band having lengthwise extending edges, two guide rails of substantially U-shaped cross-sectional configuration engaging with the lengthwise extending edges of the filter band. said guide rails having legs confronting the interior of the cabin and the width of which decreases in the throughpass direction of the filter band.

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
US486182A 1973-07-19 1974-07-05 Electrostatic powder coating installation Expired - Lifetime US3902455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1056873A CH562639A5 (es) 1973-07-19 1973-07-19

Publications (1)

Publication Number Publication Date
US3902455A true US3902455A (en) 1975-09-02

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US (1) US3902455A (es)
JP (1) JPS553976B2 (es)
AT (1) AT338392B (es)
BE (1) BE817656A (es)
BR (1) BR7405943D0 (es)
CH (1) CH562639A5 (es)
DE (2) DE2430517C3 (es)
ES (1) ES428220A1 (es)
FR (1) FR2237684B1 (es)
GB (1) GB1456285A (es)
IT (1) IT1017266B (es)
SE (1) SE418578B (es)
SU (1) SU572184A3 (es)
ZA (1) ZA744369B (es)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094654A (en) * 1975-09-29 1978-06-13 Gema Ag Apparatebau Cabin for an electrostatic powder coating installation
US4181093A (en) * 1978-04-06 1980-01-01 George Koch Sons, Inc. Spraying system with improved exhaust
US4204497A (en) * 1977-09-14 1980-05-27 Volstatic Holding Limited Electrostatic coating apparatus having conveyor belt, fluidizing and electrostatic means for recirculation of coating particles
US4260400A (en) * 1978-03-31 1981-04-07 Interesco International Research Corporation Device for powder recovery from powder-spray housings
US4279215A (en) * 1978-06-01 1981-07-21 Fritz Schafer Gmbh Apparatus for spraying workpieces and intercepting overspray
US4321064A (en) * 1980-09-24 1982-03-23 Vargo John W Filter apparatus and method of filtering
US4323030A (en) * 1979-06-28 1982-04-06 Lehmann Jr Ernst Spray coating device
US4394146A (en) * 1981-09-29 1983-07-19 Crane & Co., Inc. Filter apparatus
US4430956A (en) * 1982-06-01 1984-02-14 George Koch Sons, Inc. Spray booth with undeposited coating material collection system
US4504292A (en) * 1982-08-10 1985-03-12 Esb Elektrostatische Spruh- Und Beschichtungsanlagen G.F. Vohringer Gmbh Powder spray booth
US4506625A (en) * 1982-08-10 1985-03-26 ESB Elektrostatische Spruh und Beschichtungsanlagen G.F. Vohringer GmbH Powder spray chamber
US4519222A (en) * 1982-06-12 1985-05-28 Herbert Kannegisser GmbH & Co. Device for smoothing garments
US4566969A (en) * 1981-09-29 1986-01-28 Crane & Co., Inc. Rolling filter apparatus
US4836137A (en) * 1986-09-13 1989-06-06 Kopperschmidt-Mueller Gmbh & Co. Kg Apparatus for electrostatically spray coating workpieces with air ionizing neutralizing device
US4852513A (en) * 1988-03-25 1989-08-01 Ransburg Corporation Powder recovery system
US4901666A (en) * 1987-06-24 1990-02-20 Onoda Cement Company, Ltd. Electrostatic powder coating device
US4924803A (en) * 1987-05-05 1990-05-15 Lune Powder booth for applying coating powder to articles
US5199989A (en) * 1991-07-31 1993-04-06 Ransburg Corporation Powder booth floor wiping mechanism
US5259879A (en) * 1991-06-27 1993-11-09 Ransburg Corporation Powder application booth liner and method of making it
US5296031A (en) * 1991-08-14 1994-03-22 Gema Volstatic Ag Electrostatic powder spray coating system for car bodies
US5494517A (en) * 1992-07-15 1996-02-27 Michael Eder Device for supporting or transporting objects to be treated with spray having means for collecting and removing excess spray
US5680670A (en) * 1995-02-15 1997-10-28 Wagner International Ag Cleaning device for a powder coating compartment
US5755246A (en) * 1995-06-23 1998-05-26 George Koch Sons, Inc. Housing for industrial finishing equipment
US6569217B1 (en) 2000-05-10 2003-05-27 Thomas M. DeMarco Industrial dust collector with multiple filter compartments
US20030145565A1 (en) * 2000-03-08 2003-08-07 Michael Eder Method and device for purifying air contaminated by paint particles
US20050274094A1 (en) * 2003-03-17 2005-12-15 Demarco Thomas M Vacuum loader
US20060207230A1 (en) * 2003-03-17 2006-09-21 Demarco Maxvac Corporation Vacuum loader with filter doors
WO2007065298A1 (fr) * 2005-12-08 2007-06-14 Kinglion Finishing Equipment Co., Ltd. Structure de traitement de dechets de machine de pulverisation
US20100215870A1 (en) * 2009-01-27 2010-08-26 Holmquist Marlon E Automated surface treatment system and method
ITMI20100635A1 (it) * 2010-04-14 2011-10-15 Elmag Spa "dispositivo per la filtrazione a secco dell'over spray"
CN104959256A (zh) * 2015-06-05 2015-10-07 国家电网公司 绝缘子表面污秽层自动喷涂装置
US20200338491A1 (en) * 2019-04-23 2020-10-29 Fanuc Corporation Air filter device of industrial machine
US20220184651A1 (en) * 2020-12-15 2022-06-16 Gallagher-Kaiser Corporation Sliding drawer dry filtration system for a paint booth

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DE2546920C3 (de) * 1974-11-14 1983-11-17 Ransburg-Gema AG, 9015 St.Gallen Elektrostatische Pulver-Beschichtungsanlage
JPS5228533A (en) * 1975-08-29 1977-03-03 Nippon Paint Co Ltd Process for powder coating
JPS5626563A (en) * 1979-08-09 1981-03-14 Hirano Kinzoku Kk Method and apparatus for recovery of powder paint
DE3122204C2 (de) * 1981-06-04 1983-03-03 Erich 8000 München Ortmeier Verfahren zum elektrostatischen Auftragen von pulverförmigen Stoffen auf Werkstücken und Beschichtungskabine zur Durchführung des Verfahrens
DE3147808A1 (de) * 1981-12-03 1983-06-16 Fritz Schäfer GmbH, 5908 Neunkirchen Vorrichtung zur spritzbehandlung, insbesondere zur spritzlackierung von gegenstaenden
US4684378A (en) * 1984-04-06 1987-08-04 Bratten Jack R Method and apparatus for removing paint overspray
DE3500005A1 (de) * 1985-01-02 1986-07-10 ESB Elektrostatische Sprüh- und Beschichtungsanlagen G.F. Vöhringer GmbH, 7758 Meersburg Beschichtungskabine zum ueberziehen der oberflaeche von werkstuecken mit beschichtungspulver
CH665966A5 (de) * 1986-01-08 1988-06-30 Peter Ribnitz Pulverbeschichtungskabine mit bodenfilter und absauganlage.
DE3704551C1 (en) * 1987-02-13 1988-05-11 Gema Ransburg Ag Spray coating system
DE3806547A1 (de) * 1987-04-30 1988-11-17 Erich Kraemer Anlage zur elektrostatischen pulverbeschichtung
DE3933745A1 (de) * 1989-10-10 1991-04-11 Hestermann Gerhard Beschichtungseinrichtung
DE4300837A1 (de) * 1993-01-14 1994-07-21 Gema Volstatic Ag St Gallen Pulver-Sprühbeschichtungsanlage
DE19505101A1 (de) * 1995-02-15 1996-08-22 Wagner Int Reinigungseinrichtung für eine Kabine zur Pulverbeschichtung
DE19522186A1 (de) * 1995-06-19 1997-03-20 Wagner Int Reinigungseinrichtung für eine Pulverbeschichtungskabine
DE10012658A1 (de) * 2000-01-21 2001-07-26 Wurster Gerd Pulverbeschichtungsanlage
ES2257887B1 (es) * 2001-06-22 2007-12-01 Jorge Feliu De La Peña Casseras Procedimiento de fabricacion de horquillas-clip para la sujecion del cabello.
DE10341977B4 (de) * 2003-09-08 2016-10-06 Dürr Systems GmbH Vorrichtung zum Abtrennen von Lack-Overspray, Anlage zum Lackieren von Werkstücken mit einer solchen Vorrichtung und Verfahren zum Abtrennen von Lack-Overspray
DE102006008431A1 (de) * 2006-02-23 2007-08-30 Rehau Ag + Co. Lackieranlage mit einer Spritzkabine mit Abscheidesystem

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US2875680A (en) * 1956-02-21 1959-03-03 Forshee Sheila Method and means for trapping paint over-spray
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US3690298A (en) * 1970-05-22 1972-09-12 Enrico Venturi Apparatus for coating articles with a dry powdered material
US3744450A (en) * 1971-11-19 1973-07-10 S Hardy Device for reclaiming dry powder particulates

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Publication number Priority date Publication date Assignee Title
US2752003A (en) * 1953-05-22 1956-06-26 Jr Henry J Hersey Filter with continuous web filter medium
US2841073A (en) * 1954-09-29 1958-07-01 Sheila M Forshee Paint spray booth
US2875680A (en) * 1956-02-21 1959-03-03 Forshee Sheila Method and means for trapping paint over-spray
US3252401A (en) * 1961-12-22 1966-05-24 American Air Filter Co Paint spray booth apparatus and method
US3395972A (en) * 1965-05-20 1968-08-06 Universal Oil Prod Co Method of cleaning and purifying particle laden discharge streams
US3690298A (en) * 1970-05-22 1972-09-12 Enrico Venturi Apparatus for coating articles with a dry powdered material
US3744450A (en) * 1971-11-19 1973-07-10 S Hardy Device for reclaiming dry powder particulates

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094654A (en) * 1975-09-29 1978-06-13 Gema Ag Apparatebau Cabin for an electrostatic powder coating installation
US4204497A (en) * 1977-09-14 1980-05-27 Volstatic Holding Limited Electrostatic coating apparatus having conveyor belt, fluidizing and electrostatic means for recirculation of coating particles
US4260400A (en) * 1978-03-31 1981-04-07 Interesco International Research Corporation Device for powder recovery from powder-spray housings
US4181093A (en) * 1978-04-06 1980-01-01 George Koch Sons, Inc. Spraying system with improved exhaust
US4279215A (en) * 1978-06-01 1981-07-21 Fritz Schafer Gmbh Apparatus for spraying workpieces and intercepting overspray
US4323030A (en) * 1979-06-28 1982-04-06 Lehmann Jr Ernst Spray coating device
DE2926040C2 (de) * 1979-06-28 1982-07-15 Ernst St.Gallen Lehmann Sprühbeschichtungskabine für pulverförmiges bis körniges Beschichtungsmaterial
US4321064A (en) * 1980-09-24 1982-03-23 Vargo John W Filter apparatus and method of filtering
US4394146A (en) * 1981-09-29 1983-07-19 Crane & Co., Inc. Filter apparatus
US4566969A (en) * 1981-09-29 1986-01-28 Crane & Co., Inc. Rolling filter apparatus
US4430956A (en) * 1982-06-01 1984-02-14 George Koch Sons, Inc. Spray booth with undeposited coating material collection system
US4519222A (en) * 1982-06-12 1985-05-28 Herbert Kannegisser GmbH & Co. Device for smoothing garments
US4504292A (en) * 1982-08-10 1985-03-12 Esb Elektrostatische Spruh- Und Beschichtungsanlagen G.F. Vohringer Gmbh Powder spray booth
US4506625A (en) * 1982-08-10 1985-03-26 ESB Elektrostatische Spruh und Beschichtungsanlagen G.F. Vohringer GmbH Powder spray chamber
US4836137A (en) * 1986-09-13 1989-06-06 Kopperschmidt-Mueller Gmbh & Co. Kg Apparatus for electrostatically spray coating workpieces with air ionizing neutralizing device
US4924803A (en) * 1987-05-05 1990-05-15 Lune Powder booth for applying coating powder to articles
US4901666A (en) * 1987-06-24 1990-02-20 Onoda Cement Company, Ltd. Electrostatic powder coating device
US4852513A (en) * 1988-03-25 1989-08-01 Ransburg Corporation Powder recovery system
US5259879A (en) * 1991-06-27 1993-11-09 Ransburg Corporation Powder application booth liner and method of making it
US5199989A (en) * 1991-07-31 1993-04-06 Ransburg Corporation Powder booth floor wiping mechanism
US5296031A (en) * 1991-08-14 1994-03-22 Gema Volstatic Ag Electrostatic powder spray coating system for car bodies
US5494517A (en) * 1992-07-15 1996-02-27 Michael Eder Device for supporting or transporting objects to be treated with spray having means for collecting and removing excess spray
US5680670A (en) * 1995-02-15 1997-10-28 Wagner International Ag Cleaning device for a powder coating compartment
US5755246A (en) * 1995-06-23 1998-05-26 George Koch Sons, Inc. Housing for industrial finishing equipment
US20030145565A1 (en) * 2000-03-08 2003-08-07 Michael Eder Method and device for purifying air contaminated by paint particles
US6569217B1 (en) 2000-05-10 2003-05-27 Thomas M. DeMarco Industrial dust collector with multiple filter compartments
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Also Published As

Publication number Publication date
JPS5044240A (es) 1975-04-21
DE2430517A1 (de) 1975-02-13
BE817656A (fr) 1974-11-04
IT1017266B (it) 1977-07-20
SU572184A3 (ru) 1977-09-05
ZA744369B (en) 1975-07-30
SE7409416L (es) 1975-01-20
FR2237684B1 (es) 1978-10-27
DE7421645U (de) 1976-08-26
GB1456285A (en) 1976-11-24
SE418578B (sv) 1981-06-15
BR7405943D0 (pt) 1975-05-13
DE2430517B2 (de) 1977-11-10
ATA563974A (de) 1976-12-15
DE2430517C3 (de) 1978-10-26
AU7080474A (en) 1976-01-08
AT338392B (de) 1977-08-25
ES428220A1 (es) 1976-07-16
FR2237684A1 (es) 1975-02-14
CH562639A5 (es) 1975-06-13
JPS553976B2 (es) 1980-01-28

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