[go: up one dir, main page]

WO2003004169A3 - Unipolarity powder coating systems including improved tribocharging and corona guns - Google Patents

Unipolarity powder coating systems including improved tribocharging and corona guns Download PDF

Info

Publication number
WO2003004169A3
WO2003004169A3 PCT/US2002/021382 US0221382W WO03004169A3 WO 2003004169 A3 WO2003004169 A3 WO 2003004169A3 US 0221382 W US0221382 W US 0221382W WO 03004169 A3 WO03004169 A3 WO 03004169A3
Authority
WO
WIPO (PCT)
Prior art keywords
tribocharging
powder
powder coating
corona
gun
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.)
Ceased
Application number
PCT/US2002/021382
Other languages
French (fr)
Other versions
WO2003004169A2 (en
Inventor
Michael R Sanner
William R Rehman
Harry J Lader
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.)
Nordson Corp
Original Assignee
Nordson Corp
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
Priority claimed from US09/901,162 external-priority patent/US20030038193A1/en
Application filed by Nordson Corp filed Critical Nordson Corp
Priority to AU2002324470A priority Critical patent/AU2002324470A1/en
Publication of WO2003004169A2 publication Critical patent/WO2003004169A2/en
Anticipated expiration legal-status Critical
Publication of WO2003004169A3 publication Critical patent/WO2003004169A3/en
Ceased legal-status Critical Current

Links

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
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0418—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces designed for spraying particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/265—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being symmetrically deflected about the axis of the nozzle
    • 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
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • B05B5/032—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying for spraying 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
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • 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
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0426—Means for supplying shaping gas

Landscapes

  • Electrostatic Spraying Apparatus (AREA)

Abstract

A plurality of unconventional negative tribo-charging materials are described for use as the powder contact surfaces in tribocharging and corona powder spray guns, gun components, and powder delivery system components. The invention also provides a short barrel tribocharging powder spray gun having an interchangeable powder contact insert and nozzle, with turbulence inducing air jets. The invention further provides novel tribocharging and corona gun designs. Improved powder coating systems are made possible wherein, for example, negative tribo guns can be utilized with negative corona guns to coat different parts of the same workpiece in a powder coating system. Also provided is an inside-out configuration in which pressurized air directs powder coating material outward towards a charging surface. Additional configurations provide air jet induced tribocharging and conventional tribocharging portions combined in a single gun.
PCT/US2002/021382 2001-07-06 2002-07-08 Unipolarity powder coating systems including improved tribocharging and corona guns Ceased WO2003004169A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002324470A AU2002324470A1 (en) 2001-07-06 2002-07-08 Unipolarity powder coating systems including improved tribocharging and corona guns

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US30360801P 2001-07-06 2001-07-06
US60/303,608 2001-07-06
US09/901,162 2001-07-09
US09/901,162 US20030038193A1 (en) 2000-07-11 2001-07-09 Unipolarity powder coating systems including improved tribocharging and corona guns

Publications (2)

Publication Number Publication Date
WO2003004169A2 WO2003004169A2 (en) 2003-01-16
WO2003004169A3 true WO2003004169A3 (en) 2008-01-17

Family

ID=26973558

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/021382 Ceased WO2003004169A2 (en) 2001-07-06 2002-07-08 Unipolarity powder coating systems including improved tribocharging and corona guns

Country Status (2)

Country Link
AU (1) AU2002324470A1 (en)
WO (1) WO2003004169A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013219813B4 (en) * 2013-09-30 2020-07-09 Gema Switzerland Gmbh Nozzle for atomizing coating materials

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994027730A1 (en) * 1993-05-25 1994-12-08 Trinco Ab Device for use by electrostatic powder coating
US5567468A (en) * 1994-10-11 1996-10-22 Schonbek Worldwide Lighting Inc. Method and apparatus for applying powder coatings to surfaces
US5622313A (en) * 1995-03-03 1997-04-22 Nordson Corporation Triboelectric powder spray gun with internal discharge electrode and method of powder coating
EP0795589A1 (en) * 1996-03-12 1997-09-17 Kao Corporation Powder coating
DE19909805C1 (en) * 1999-03-05 2000-10-26 Fraunhofer Ges Forschung Electrostatic powder coating method uses triboelectric and corona charge for electrostatic charge of coating powder which is a mixture of at least 2 different materials

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994027730A1 (en) * 1993-05-25 1994-12-08 Trinco Ab Device for use by electrostatic powder coating
US5567468A (en) * 1994-10-11 1996-10-22 Schonbek Worldwide Lighting Inc. Method and apparatus for applying powder coatings to surfaces
US5622313A (en) * 1995-03-03 1997-04-22 Nordson Corporation Triboelectric powder spray gun with internal discharge electrode and method of powder coating
EP0795589A1 (en) * 1996-03-12 1997-09-17 Kao Corporation Powder coating
DE19909805C1 (en) * 1999-03-05 2000-10-26 Fraunhofer Ges Forschung Electrostatic powder coating method uses triboelectric and corona charge for electrostatic charge of coating powder which is a mixture of at least 2 different materials

Also Published As

Publication number Publication date
AU2002324470A8 (en) 2008-03-13
WO2003004169A2 (en) 2003-01-16
AU2002324470A1 (en) 2003-01-21

Similar Documents

Publication Publication Date Title
WO2002004127A3 (en) Unipolarity powder coating systems including improved tribocharging and corona guns
JP4428973B2 (en) Rotating atomizing coating apparatus and coating method
EP1008392A3 (en) Electrocstatic powder coating apparatus
EP0885658B1 (en) Convertible spray gun
DE3666150D1 (en) Method for spray coating objects, and spray gun for carrying out this method
EP2298451B1 (en) Electrostatic spray system
WO1985001455A1 (en) Rotary atomizer spray painting device
EP1234617A3 (en) A spray gun
JPH06210199A (en) Orthopedic spray nozzle for powder coating gun
SI1923138T1 (en) Method and atomiser for serial coating of workpieces
WO2003004169A3 (en) Unipolarity powder coating systems including improved tribocharging and corona guns
US6247657B1 (en) Power gun spray nozzle and method
WO2003006171A3 (en) Unipolarity powder coating systems including improved tribocharging and corona guns
Henne et al. Influence of nozzle geometry on particle behaviour and coating quality in high-velocity VPS
JPH11188292A (en) Electrostatic coating gun using bell type rotary atomizing head
DE50001683D1 (en) Spray head for an electrostatic rotary atomizer
JP3589022B2 (en) Metallic paint application method
EP0878239B1 (en) Domed air cap
EP2986392B1 (en) Electrostatic spray tool system
JP3753646B2 (en) Rotary atomizing coating equipment
JP3405492B2 (en) Paint spray gun
US8371517B2 (en) Powder gun deflector
JP2007203257A (en) Spray pattern variable mechanism and spray pattern variable method of bell type coating apparatus
GB2063713A (en) Spray guns
US20090314855A1 (en) Vector or swirl shaping air

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG US

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP