WO2013042666A1 - 静電塗装方法及び静電塗装用ガン - Google Patents
静電塗装方法及び静電塗装用ガン Download PDFInfo
- Publication number
- WO2013042666A1 WO2013042666A1 PCT/JP2012/073855 JP2012073855W WO2013042666A1 WO 2013042666 A1 WO2013042666 A1 WO 2013042666A1 JP 2012073855 W JP2012073855 W JP 2012073855W WO 2013042666 A1 WO2013042666 A1 WO 2013042666A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- paint
- electrostatic
- coating
- coated
- electrostatic coating
- Prior art date
Links
Images
Classifications
-
- 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
- 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
- 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
- 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
- B05D1/045—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field on non-conductive substrates
-
- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
Definitions
- the present invention relates to a method for electrostatic coating of a conductive surface to be coated and a gun for electrostatic coating.
- electrostatic coating means that an object to be coated is an earth electrode, an electrode on the coating device side is a cathode, and an electrostatic field (electric lines of force) is formed by applying a high voltage therebetween, and paint particles are
- an electrostatic field electric lines of force
- paint particles are
- Electrostatic coating improves coating efficiency (shortens the coating time by improving the paint throwing power) and improves coating efficiency (improves the amount ratio of paint applied to the object to be used) Effects).
- the throwing around is that the coating applied from the front side of the object to be coated wraps around to the back side and is applied.
- the conventional electrostatic coating method is classified into three types according to the paint atomization method: an air atomization method, an airless atomization method, and a rotary atomization method (atomization by a bell or a disk). Furthermore, it can be divided into a direct application method and a corona discharge method according to a high voltage application method that generates electrostatic attraction.
- the direct application method is applied only to the rotary atomization method, and the corona discharge method is mainly applied to the air atomization method and the airless atomization method.
- the corona discharge method there is an external charging method in which the corona discharge electrode and the paint discharge portion are arranged apart from each other and the paint is charged with static electricity in the space up to the object to be coated. This is often used for highly conductive paints (such as water-based paints) in which a high voltage leaks from the paint path in a general system in which a corona discharge electrode is disposed in the paint discharge part.
- the conventional electrostatic coating technology is composed of a combination of these paint atomization methods and high voltage application methods, but the electrostatic coating mechanism is common. That is, in any combination, the paint particles are charged with static electricity, and charged paint particles along the electrostatic field formed between the coating machine (actually corona discharge electrode or rotary atomizing head) and the object to be coated. Is flying, and electrostatic attraction is working.
- the first is a method in which an electrostatic field is formed between the coating machine and the object to be coated. Therefore, when unevenness is present in the object to be coated, the coating efficiency increases at the convex part where the electric field strength is strong. On the other hand, the coating film thickness tends to be excessive, and conversely, in the concave portion where the electric field is not formed or the electric field strength is weak, the coating is difficult to enter, and the coating cannot be performed or the coating is thin. As countermeasures, the electrostatic coating voltage has been lowered or cut off. However, such countermeasures reduce or reduce the effects required for electrostatic coating. I could't say that.
- the second problem is that a large amount of ionized air called free ions is generated together with the charged paint particles. Since the free ions have an overwhelmingly smaller mass than the charged paint particles, they fly under the influence of electrostatic force, unlike paint particles that exert a large inertial force. As a result, not only the object to be coated, which is the target of electrostatic coating, but also the conductor existing in the periphery, and when the conductor is not sufficiently grounded, the conductor is charged. This electrification can cause an electrostatic spark and cause a fire. In addition, even when the object to be coated is insufficiently grounded, a fire can be induced by electrostatic spark.
- the conventional electrostatic coating technology has a problem that it is difficult for the coating material to enter the recess and a problem that free ions that cause electrostatic spark are generated.
- the present invention has been made in view of the above circumstances, and is an electrostatic coating method for a conductive coated surface capable of improving the penetration of a coating material into a recess and suppressing the occurrence of electrostatic sparks. And to provide a gun for electrostatic coating.
- the electrostatic coating method according to the present invention is an electrostatic coating method in which a conductor such as a metal or a conductive resin is used as a coating surface, and between the discharge source and the coating surface.
- a charged paint liquid paint
- the method of suppressing the generation of electrostatic fields and free ions between the discharge source and the surface to be coated is based on the coating material inside the coating machine without providing a gun external electrode part such as a corona discharge electrode exposed to the outside.
- a method in which a high voltage is directly applied to the paint inside the coating machine from the high voltage electrode arranged so as to be in contact with the path to charge the paint, and the charged paint is discharged from the discharge source is preferable.
- the volume resistivity value of the paint is preferably 100 M ⁇ cm or less, more preferably 50 M ⁇ cm or less, and further preferably 20 M ⁇ cm or less.
- a low resistance paint having a volume resistivity of 100 M ⁇ cm or less has been used for electrostatic coating of an insulator, but has not been intentionally used for electrostatic coating of a conventional conductor. This is because the static electricity applied to the object to be coated by electrostatic coating does not easily flow and accumulate in the case of a conductor.
- the above-mentioned method in which a high voltage is directly applied to the paint from the high-voltage electrode to charge the paint cannot be sufficiently charged with a paint having a high resistance value. Paint is preferably used.
- the charged paint particles discharged from the discharge source fly along the electrostatic field. Without flying, it flies along inertia and air flow and approaches the surface to be coated.
- the paint particles are negatively charged, when the paint particles reach the surface to be coated, the negatively charged electrons move to the inside due to the repulsive force, and the positively charged nuclei are outside.
- an electrostatic field is generated between the paint particles and the surface to be coated.
- This electrostatic field is an electrostatic field formed between the paint particles and the coated surface when the negatively charged paint particles approach the conductive coated surface. Or known as the mirror image effect.
- the paint particles When the paint particles are positively charged, the paint particles attract electrons on the surface to be coated, so that the surface to be coated becomes a negative pole contrary to the above. Due to such a mirror effect, a micro electrostatic field is generated in the vicinity of the coated surface, and the paint particles are applied to the coated surface by the electrostatic attraction.
- the paint particles that flew along the inertia and air flow and approached the coated surface are applied to the coated surface by the electrostatic attraction of a micro electrostatic field generated in the vicinity of the coated surface.
- the paint penetration into the recess is improved. Therefore, the concave portion and other portions (including the convex portion) can be coated equally, and the coating quality can be improved (coating film thickness can be made uniform).
- the paint efficiency is improved (shortening the paint time) and the paint application efficiency is improved (reducing paint usage and reducing non-coating waste paint and discharged paint particles). Can be achieved.
- the coated surface may include a weakly conductive or insulating region (nonconductive region) made of a nonconductive resin or the like.
- the amount of ions reaching the surface to be coated is reduced, and charging of the non-conductive region is suppressed. Furthermore, by applying a low-resistance paint, the charge in the non-conductive area can be quickly transferred to the conductive area, and the charge in the non-conductive area can be maintained at a low level, and good electrostatic coating can be continued. Can be done. That is, even when a conductive region and a non-conductive region are mixed on the surface to be coated, the conductive region and the non-conductive region can be coated equally in the same process.
- the electrostatic coating gun according to the present invention is an electrostatic coating gun used as the discharge source in the electrostatic coating method, and includes a paint supply path, a high voltage electrode, and a discharge port.
- the paint circulates in the paint supply path.
- the high voltage electrode is provided in the paint supply path, and charges the paint by directly applying a high voltage to the paint flowing through the paint supply path.
- the discharge port is provided at or near the tip of the paint supply path and discharges the charged paint to the outside. That is, the electrostatic coating gun does not have a gun outer electrode portion such as a corona discharge electrode exposed to the outside.
- the present invention it is possible to improve the penetration property of the paint into the concave portion and to suppress the occurrence of electrostatic spark.
- FIG. It is the photograph which image
- the up and down directions correspond to the up and down direction in FIG. 1, and the front and back correspond to the left and right in FIG.
- a spray gun (electrostatic coating gun) 1 as a discharge source of the present embodiment is an automatic spray gun, for example, for electrostatic coating of a surface 21 to be coated including a conductive region. used.
- the spray gun 1 includes an insulating resin gun body 2, an insulating resin paint nozzle 3 attached to the tip of the gun body 2, and a front end portion of the gun body 2 to cover the outer periphery of the paint nozzle 3. And an insulating resin air cap (for example, a fan pattern spray type) 4.
- a cascade (high voltage generator) 5 in which a step-up transformer and a high-voltage rectifier circuit constituting a high-voltage generation circuit are integrally molded is housed in the upper part of the gun body 2.
- the connecting rod 6 having the property is disposed downward.
- the front end of the cascade 5 is in contact with the connecting rod 6 and both are electrically connected.
- a hole 10 is formed in the center of the paint nozzle 3, and a metal high voltage direct application electrode (high voltage electrode) 31 is accommodated and supported in the hole 10.
- the rear end portion of the high-voltage direct application electrode 31 is inserted into the hole 11 formed in the gun body 2 and is electrically connected to the connecting rod 7 via the spring 9.
- the front end of the hole 10 communicates with the outside through the discharge port 12.
- the air cap 4 is provided with two types of air injection ports (not shown).
- One air injection port functions as atomizing air that atomizes the discharged paint (liquid paint), and the other injection port functions as pattern air that forms a spray of a fan pattern.
- the high-frequency voltage taken from the power connector (not shown) is supplied to the step-up transformer in the cascade 5 via the wiring cable (not shown) in the grip 3.
- the supplied high-frequency voltage is boosted by a step-up transformer, then further boosted by a high-voltage rectifier circuit and rectified at the same time, and a DC high voltage of minus several tens of thousands of volts is generated.
- the generated DC high voltage is supplied from the cascade 5 to the high voltage direct application electrode 31 through the connecting rod 6 and the spring 9.
- the applied high voltage is preferably about 50 kV to 60 kV, for example.
- the gun body 2 is provided with a paint circulation hole 16 communicating with the hole 11, and the paint is supplied from the paint circulation hole 16 to the hole 11.
- the coating material flowing through the hole 10 is applied by directly contacting the high voltage direct application electrode 31, and the coating material itself becomes a discharge electrode to carry charges, and becomes negatively charged coating particles, which are discharged from the discharge port 12 to the air. Atomized and discharged.
- the paint is a low resistance paint having a low volume resistivity.
- the volume specific resistance value of the paint is preferably 100 M ⁇ cm or less, more preferably 50 M ⁇ cm or less, and further preferably 20 M ⁇ cm or less.
- the coated surface 21 of the workpiece 20 facing the spray gun 1 has an uneven shape (concave portion 24 and convex portion 25), and the ground portion 23 of the coated surface 21 is connected to a ground wire and grounded. .
- the coated surface 21 is formed of a conductor such as metal or conductive resin.
- the to-be-coated object 20 may be either a conductor or an insulator.
- the coated surface 21 is applied by discharging charged paint from the spray gun 1 while suppressing the generation of an electrostatic field between the spray gun 1 and the coated surface 21 and suppressing the generation of free ions. It is applied to the surface 21 to be coated.
- the generation of the electrostatic field and the generation of free ions between the spray gun 1 and the surface to be coated 21 are performed from the high voltage direct application electrode 31 by using the spray gun 1 having no corona discharge electrode exposed to the outside. It is suppressed by applying a high voltage directly to charge the paint negatively and applying the charged paint.
- the present embodiment is implemented in that the charged paint is discharged from the spray gun 1 in a state in which the generation of an electrostatic field between the spray gun 1 and the surface to be coated 21 is suppressed and the generation of free ions is suppressed.
- the form of electrostatic coating is essentially different from the conventional common electrostatic coating.
- a spray gun having a corona pin In conventional general electrostatic coating, a spray gun having a corona pin is used. The tip of the corona pin corona discharges to ionize the air and forms an electrostatic field with the conductive coated surface 21. Air ionized by corona discharge flies along the formed electrostatic field. The spray gun discharges the atomized paint particles to an electrostatic field. The discharged paint particles are charged by being charged with ionized air, and are applied to the coated surface 21 while receiving an attractive force along the electrostatic field. At this time, of the ionized air, the air that has not given a charge to the paint particles is called free ions and flies along a trajectory mainly governed by the formed electrostatic field.
- the formed electrostatic field has a high electric field strength with respect to the convex portion 25 of the coated surface 21 and a low electric field strength with respect to the concave portion 24. For this reason, the coating particles are likely to be excessively applied to the convex portion 25 and are difficult to enter the concave portion 24.
- the spray gun since the generation of an electrostatic field (macro electrostatic field) between the spray gun 1 and the coated surface 21 is suppressed, the spray gun is charged negatively.
- the coating particles discharged from the air atomized from 1 do not fly along the electrostatic field, fly along the inertia and the air flow, and approach the coated surface 21.
- a micro electrostatic field is generated in the vicinity of the surface to be coated 21 due to the mirror effect, and the paint particles are applied to the surface 21 by electrostatic attraction.
- the paint particles flying along the inertia and air flow and approaching the coated surface 21 are applied to the coated surface 21 by the electrostatic attraction of a micro electrostatic field generated in the vicinity of the coated surface 21.
- the penetration property of the coating material into the recess 24 is improved. Therefore, the concave portion 24 and other portions (including the convex portion 25) can be coated equally, and the coating quality can be improved (coating film thickness can be made uniform). Further, by improving the penetration into the recess 24, it is possible to improve the painting efficiency (shortening the painting time) and the painting coating efficiency (reduce the amount of paint used).
- the coating time was 180 seconds
- the coating film thickness varied in the range of 40 to 80 ⁇ m
- the coating efficiency was less than 50%.
- the coating time is shortened to 90 seconds, the coating film thickness is uniformized in the range of 40-50 ⁇ m, and the coating efficiency is 73%, improving the coating efficiency (reducing the coating time) ), Improved coating quality (uniform coating film thickness), and improved coating efficiency (reduced paint usage).
- a 500 cc PET bottle with irregularities on the surface was used as the object to be coated, and a conductive coated surface with irregularities was formed by covering the entire surface of the PET bottle with aluminum foil and attached to the reciprocator.
- the automatic spray gun for electrostatic coating was reciprocated three reciprocally in the vertical direction, and the electrostatic coating was performed by discharging the paint only within the range of the PET bottle, and the coating efficiency was measured.
- the paint six kinds of low-resistance paints (1 M ⁇ cm, 5 M ⁇ cm, 20 M ⁇ cm, 49 M ⁇ cm, 103 M ⁇ cm, 193 M ⁇ cm) having different volume specific resistance values were used.
- the high voltage applied to the paint was 55 kV (electrostatic), and coating was also performed at 0 kV (non-electrostatic) for comparison.
- the volume specific resistance value of the paint is preferably 100 M ⁇ cm or less, preferably 50 M ⁇ cm or less, and more preferably 20 M ⁇ cm or less.
- 4 to 8 show that the injection of air from the air cap 7 which is the paint atomizing part of the gun body is completely stopped, the applied voltage is fixed at 60 kV, and the volume specific resistance value of the paint is changed to change the paint. It is the photograph which image
- the coating liquid yarn at 200 M ⁇ cm (FIG. 4) is a water gun-like liquid yarn, whereas the coating liquid yarn at 100 M ⁇ cm (FIG. 5) is several cm after discharge. It was confirmed that the liquid yarn was electrostatically repelled and split and atomized. In addition, the spinous fission atomization occurs earlier as the volume resistivity of the paint decreases, the voltage drop in the paint liquid yarn decreases and the effective voltage increases, and the spine becomes prominent. Was confirmed.
- the air spray type spray gun 1 has been described as an electrostatic coating gun that is negatively charged by directly applying a high voltage to the paint.
- the electrostatic coating gun of the present invention is not limited thereto.
- internal structure for directly applying a high voltage to the paint to make it negatively charged and a high-voltage applying conductor that generates free ions may be an airless spray gun or a rotary atomizing gun having an insulating structure.
- the paint particles are negatively charged using the electrode on the coating apparatus side as the cathode.
- the paint particles may be charged positively using the electrode on the coating apparatus side as the anode.
- the coated surface 21 may include a weakly conductive or insulating region (nonconductive region) 26 made of a nonconductive resin or the like, as shown by a two-dot chain line in FIG. In FIG. 1, an example in which the conductive coated surface is partially covered with a non-conductive resin plate and the outer surface of the resin plate is part of the coated surface 21 is illustrated.
- the electrostatic coating method of the present invention since the formation of a macro electric field and the generation of free ions are suppressed, the amount of ions reaching the surface to be coated 21 is reduced, and charging of the non-conductive region 26 is suppressed. . Furthermore, by applying the low resistance paint, the non-conductive region 26 can be kept at a low level, and good electrostatic coating can be continuously performed. That is, even when the conductive surface 21 and the non-conductive region 26 are mixed on the surface to be coated 21, both can be equally coated in the same process.
- the present invention can be widely used for electrostatic coating of conductive coated surfaces.
- Spray gun discharge source, electrostatic coating gun
- Gun body 3 Paint nozzle 4: Air cap 5: Cascade (high voltage generator) 10: Hole (paint supply path) 12: Discharge port 20: Coating object 21: Coating surface 23: Grounding part 24: Concave part 25: Convex part 26: Non-conductive area 31: High voltage direct application electrode
Landscapes
- Electrostatic Spraying Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
次に、効果確認実験1について説明する。
次に、効果確認実験2について説明する。
次に、効果確認実験3について、図4~図8を参照して説明する。この実験では、高電圧直接印加電極31との接触によって印加された塗料の状態を観察した。
2:ガン本体
3:ペイントノズル
4:エアキャップ
5:カスケード(高電圧発生装置)
10:孔(塗料供給路)
12:吐出口
20:被塗物
21:被塗面
23:接地部
24:凹部
25:凸部
26:非導電性領域
31:高電圧直接印加電極
Claims (5)
- 被塗面を塗装する静電塗装方法であって、
前記被塗面は、導電性を有する領域を含み、
吐出元と前記被塗面との間での静電界の発生を抑制し且つフリーイオンの発生を抑制した状態で、帯電した塗料を前記塗料吐出元から吐出させて前記被塗面に塗布する
ことを特徴とする静電塗装方法。 - 請求項1に記載の静電塗装方法であって、
前記被塗面は、弱導電性又は絶縁性を有する領域を含む
ことを特徴とする静電塗装方法。 - 請求項1又は請求項2に記載の静電塗装方法であって、
高電圧電極から高電圧を塗料に直接印加して帯電させ、帯電した塗料を前記吐出元から吐出させることによって、前記吐出元と前記被塗面との間での静電界の発生を抑制し且つフリーイオンの発生を抑制する
ことを特徴とする静電塗装方法。 - 請求項1~請求項3の何れか1項に記載の静電塗装方法であって、
前記塗料の体積固有抵抗値は、100MΩcm以下である
ことを特徴とする静電塗装方法。 - 請求項1~請求項4の何れか1項に記載の静電塗装方法において前記吐出元として使用する静電塗装ガンであって、
塗料が流通する塗料供給路と、
前記塗料供給路に設けられ、該塗料供給路を流通する塗料に高電圧を直接印加して塗料を帯電させる高電圧電極と、
前記塗料供給路の先端に設けられ、帯電した塗料を外部へ吐出する吐出口と、を備えた
ことを特徴とする静電塗装用ガン。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12834334.0A EP2786805A4 (en) | 2011-09-20 | 2012-09-18 | METHOD FOR ELECTROSTATIC PAINT AND GUN FOR ELECTROSTATIC PAINT |
CN201280056981.0A CN103945950B (zh) | 2011-09-20 | 2012-09-18 | 静电涂装方法及静电涂装用枪 |
US14/362,524 US10576496B2 (en) | 2011-09-20 | 2012-09-18 | Electrostatic coating method and gun for electrostatic coating |
US16/667,973 US20200061664A1 (en) | 2011-09-20 | 2019-10-30 | Electrostatic coating method and gun for electrostatic coating |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-205203 | 2011-09-20 | ||
JP2011205203A JP5787223B2 (ja) | 2011-09-20 | 2011-09-20 | 静電塗装方法及び静電塗装用ガン |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/362,524 A-371-Of-International US10576496B2 (en) | 2011-09-20 | 2012-09-18 | Electrostatic coating method and gun for electrostatic coating |
US16/667,973 Division US20200061664A1 (en) | 2011-09-20 | 2019-10-30 | Electrostatic coating method and gun for electrostatic coating |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013042666A1 true WO2013042666A1 (ja) | 2013-03-28 |
Family
ID=47914430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/073855 WO2013042666A1 (ja) | 2011-09-20 | 2012-09-18 | 静電塗装方法及び静電塗装用ガン |
Country Status (5)
Country | Link |
---|---|
US (2) | US10576496B2 (ja) |
EP (1) | EP2786805A4 (ja) |
JP (1) | JP5787223B2 (ja) |
CN (1) | CN103945950B (ja) |
WO (1) | WO2013042666A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108636629A (zh) * | 2018-05-08 | 2018-10-12 | 杭州福路涂装设备有限公司 | 防反弹的静电涂装装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54107940A (en) * | 1978-02-14 | 1979-08-24 | Ransburg Japan Ltd | Air spray type automatic electrostatic coating gun |
JPS6328148U (ja) * | 1986-08-06 | 1988-02-24 | ||
JPH1057846A (ja) * | 1996-08-21 | 1998-03-03 | Ransburg Ind Kk | 粉体塗料用静電塗装機 |
JP2007038081A (ja) * | 2005-08-01 | 2007-02-15 | Toyota Central Res & Dev Lab Inc | 電気絶縁性基材の静電塗装方法 |
JP2010279931A (ja) | 2009-06-08 | 2010-12-16 | Asahi Sunac Corp | 静電塗装用スプレーガン |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3591080A (en) * | 1969-09-15 | 1971-07-06 | Champion Spark Plug Co | Electrostatic spray gun |
US4502629A (en) * | 1983-01-18 | 1985-03-05 | Nordson Corporation | Nozzle assembly for electrostatic spray guns |
US4819879A (en) * | 1985-10-25 | 1989-04-11 | Nordson Corporation | Particle spray gun |
US4824026A (en) | 1986-08-06 | 1989-04-25 | Toyota Jidosha Kabushiki Kaisha And Ransburg-Gema K.K. | Air atomizing electrostatic coating gun |
HUT47050A (en) | 1986-11-18 | 1989-01-30 | Gyoergy Benedek | Electrostatic paint sprayer for spraying low-resistance paints and metal-effective lacquers |
JPH0889853A (ja) * | 1994-07-29 | 1996-04-09 | Nissan Motor Co Ltd | コロナ放電方法および静電塗装装置 |
US5585426A (en) | 1994-10-05 | 1996-12-17 | Nexus Corporation | Process for imparting an electrostatic charge to powders to render them useful for coating application |
US20030080220A1 (en) * | 1999-09-16 | 2003-05-01 | Mather Brian D. | Powder spray gun with inline angle spray nozzle |
US7241344B2 (en) * | 2004-02-10 | 2007-07-10 | Boston Scientific Scimed, Inc. | Apparatus and method for electrostatic spray coating of medical devices |
JP2006051427A (ja) | 2004-08-11 | 2006-02-23 | Anest Iwata Corp | 静電塗装用スプレーガン及び静電塗装方法 |
US7913938B2 (en) * | 2004-11-12 | 2011-03-29 | Mystic Tan, Inc. | Electrostatic spray nozzle with adjustable fluid tip and interchangeable components |
WO2006126716A1 (ja) * | 2005-05-25 | 2006-11-30 | Anest Iwata Corporation | 粉体静電塗装用スプレーガン |
CN101353876B (zh) * | 2007-07-27 | 2010-11-10 | 许鸿宪 | 纸张表面静电喷涂工艺及其专用高压静电喷涂系统 |
-
2011
- 2011-09-20 JP JP2011205203A patent/JP5787223B2/ja not_active Expired - Fee Related
-
2012
- 2012-09-18 CN CN201280056981.0A patent/CN103945950B/zh active Active
- 2012-09-18 US US14/362,524 patent/US10576496B2/en active Active
- 2012-09-18 WO PCT/JP2012/073855 patent/WO2013042666A1/ja active Application Filing
- 2012-09-18 EP EP12834334.0A patent/EP2786805A4/en not_active Withdrawn
-
2019
- 2019-10-30 US US16/667,973 patent/US20200061664A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54107940A (en) * | 1978-02-14 | 1979-08-24 | Ransburg Japan Ltd | Air spray type automatic electrostatic coating gun |
JPS6328148U (ja) * | 1986-08-06 | 1988-02-24 | ||
JPH1057846A (ja) * | 1996-08-21 | 1998-03-03 | Ransburg Ind Kk | 粉体塗料用静電塗装機 |
JP2007038081A (ja) * | 2005-08-01 | 2007-02-15 | Toyota Central Res & Dev Lab Inc | 電気絶縁性基材の静電塗装方法 |
JP2010279931A (ja) | 2009-06-08 | 2010-12-16 | Asahi Sunac Corp | 静電塗装用スプレーガン |
Non-Patent Citations (1)
Title |
---|
See also references of EP2786805A4 |
Also Published As
Publication number | Publication date |
---|---|
CN103945950A (zh) | 2014-07-23 |
US20150165474A1 (en) | 2015-06-18 |
US10576496B2 (en) | 2020-03-03 |
CN103945950B (zh) | 2016-03-16 |
US20200061664A1 (en) | 2020-02-27 |
EP2786805A1 (en) | 2014-10-08 |
EP2786805A4 (en) | 2015-10-21 |
JP5787223B2 (ja) | 2015-09-30 |
JP2013066817A (ja) | 2013-04-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20060081729A1 (en) | Electrostatic spraying apparatus | |
JPS6013755B2 (ja) | 液状塗料を物品に静電気的に被着させる装置 | |
JP5943290B2 (ja) | 静電塗装方法及び静電塗装用ガン | |
US9724728B2 (en) | Electrostatic coating method | |
WO2013132687A1 (ja) | 静電塗装用スプレー装置 | |
JP5787223B2 (ja) | 静電塗装方法及び静電塗装用ガン | |
JP2010279931A (ja) | 静電塗装用スプレーガン | |
US20130216725A1 (en) | Method for electrostatically coating objects and application device | |
EP3593906B1 (en) | Electrostatic coating machine | |
JP2008119557A (ja) | 外部電極を備えた外部帯電式静電塗装ガン | |
US20190217316A1 (en) | Spray Plume Shaping System and Method | |
JP5633990B2 (ja) | 静電塗装装置 | |
JP2007203158A (ja) | 静電塗装用ガン | |
JP2011255277A (ja) | 静電塗装装置 | |
JP7572718B2 (ja) | 静電塗装用スプレーガン | |
WO2020084961A1 (ja) | 直接帯電方式の溶剤系塗料使用静電塗装方法及び静電塗装装置 | |
JP7177468B2 (ja) | 静電塗装用スプレーガン | |
JP2024115513A (ja) | 静電塗装用スプレーガン | |
JP2018020275A (ja) | 静電塗装用ガン | |
JPH1034027A (ja) | 静電被膜形成用ガン及び静電被膜形成装置 | |
JPS5933489Y2 (ja) | 静電式粉体塗装ガン | |
JPH0924306A (ja) | 静電塗装装置 | |
JPH0857364A (ja) | 静電粉体塗装装置 | |
JPWO2013132687A1 (ja) | 静電塗装用スプレー装置 | |
JP2006095498A (ja) | 静電塗装ガン及び静電塗装方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201280056981.0 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12834334 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14362524 Country of ref document: US |
|
REEP | Request for entry into the european phase |
Ref document number: 2012834334 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012834334 Country of ref document: EP |