GB1017859A - Improvements in and relating to electrostatic spray-coating methods and apparatus - Google Patents
Improvements in and relating to electrostatic spray-coating methods and apparatusInfo
- Publication number
- GB1017859A GB1017859A GB35966/60A GB3596660A GB1017859A GB 1017859 A GB1017859 A GB 1017859A GB 35966/60 A GB35966/60 A GB 35966/60A GB 3596660 A GB3596660 A GB 3596660A GB 1017859 A GB1017859 A GB 1017859A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- article
- charging electrode
- counter
- zone
- 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
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
- B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
- B05B12/0022—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
- B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
- B05B7/067—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet the liquid outlet being annular
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
A method of electrostatic spray painting an article by means of a paint atomizing and charging device comprises atomizing the paint into a spray and depositing the spray upon the article with the aid of an electrostatic field, the method including the steps of maintaining the article at substantially earth potential, establishing a high voltage electrostatic deposition field between the article and a charging electrode on said device at high potential and a high voltage electrostatic field between said charging electrode and a counter-electrode on said device, the charging electrode being effectively shaped, at that part nearest the article, as a point, thereby to produce in the immediate vicinity of the electrode zone of high ionization, directing into said zone the discharge from the adjacent discharge orifice of an orifice type mechanical atomizer, whereby finely atomized paint particles produced in or directed into said zone are charged and thereupon move under the influence of the field between said charging electrode and the article, procuring that substantially all the paint in the discharge traverses said zone, and maintaining the region between said zone and the article free of any element, including said counter-electrode, which would significantly diminish the intensity of ionization or the deposition effect of said field in said zone, the average potential gradient of the field between the charging electrode and the counter-electrode being greater than that of the field between the charging electrode and the article. In a second embodiment, the average potential gradient between the charging electrode and the counter-electrode is greater than five kilovolts per inch. Apparatus is described comprising a mechanical paint atomizer, a charging electrode, and a counter-electrode arranged so as to produce a zone of ionization through which the discharge from the atomizer passes, the distance between the charging electrode and the counter-electrode being less than a distance between the charging electrode and the article to be painted at which, with a potential of not less than 20 kilovolts between the charging electrode and the article, the apparatus will effectively paint the article. In a further embodiment of apparatus the average potential gradient between the charging electrode and the counter-electrode is said to be not less than 5 kilovolts per-inch or is greater than the average potential gradient between the charging electrode and the article. The atomizing device may contain a resistor in the high voltage electrical circuit so as to limit the effective capacity of the electrode. The atomization of the paint may be by means of compressed air, or by ejection under high pressure through a small orifice. Additional air from a further orifice or orifices may be used to shape the spray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB35966/60A GB1017859A (en) | 1960-10-20 | 1960-10-20 | Improvements in and relating to electrostatic spray-coating methods and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB35966/60A GB1017859A (en) | 1960-10-20 | 1960-10-20 | Improvements in and relating to electrostatic spray-coating methods and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1017859A true GB1017859A (en) | 1966-01-19 |
Family
ID=10383461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35966/60A Expired GB1017859A (en) | 1960-10-20 | 1960-10-20 | Improvements in and relating to electrostatic spray-coating methods and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1017859A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU170809U1 (en) * | 2017-03-01 | 2017-05-11 | федеральное государственное бюджетное образовательное учреждение высшего образования "Нижегородский государственный технический университет им. Р.Е. Алексеева" (НГТУ) | Powder sprayer with replaceable nozzle |
| US10543494B2 (en) | 2015-07-01 | 2020-01-28 | Ransburg Industrial Finishing K.K. | Electrostatic coating device and system |
| DE102019003592A1 (en) * | 2019-05-22 | 2020-11-26 | Hermann Sebald KG | Hand-operated fluid power device |
-
1960
- 1960-10-20 GB GB35966/60A patent/GB1017859A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10543494B2 (en) | 2015-07-01 | 2020-01-28 | Ransburg Industrial Finishing K.K. | Electrostatic coating device and system |
| RU170809U1 (en) * | 2017-03-01 | 2017-05-11 | федеральное государственное бюджетное образовательное учреждение высшего образования "Нижегородский государственный технический университет им. Р.Е. Алексеева" (НГТУ) | Powder sprayer with replaceable nozzle |
| DE102019003592A1 (en) * | 2019-05-22 | 2020-11-26 | Hermann Sebald KG | Hand-operated fluid power device |
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