JP3671993B2 - External electrostatic coating method for construction - Google Patents

External electrostatic coating method for construction Download PDF

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Publication number
JP3671993B2
JP3671993B2 JP35925596A JP35925596A JP3671993B2 JP 3671993 B2 JP3671993 B2 JP 3671993B2 JP 35925596 A JP35925596 A JP 35925596A JP 35925596 A JP35925596 A JP 35925596A JP 3671993 B2 JP3671993 B2 JP 3671993B2
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JP
Japan
Prior art keywords
spray gun
electrostatic coating
coating method
paint
grounded
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
JP35925596A
Other languages
Japanese (ja)
Other versions
JPH09239309A (en
Inventor
元司 恩田
正美 村田
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.)
Asahi Sunac Corp
Original Assignee
Asahi Sunac 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
Application filed by Asahi Sunac Corp filed Critical Asahi Sunac Corp
Priority to JP35925596A priority Critical patent/JP3671993B2/en
Publication of JPH09239309A publication Critical patent/JPH09239309A/en
Application granted granted Critical
Publication of JP3671993B2 publication Critical patent/JP3671993B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
本発明は建物や橋梁などの構築物の外面を静電塗装する方法に関する。
【0002】
【従来の技術】
従来、構築物の外面の吹き付け塗装は非静電で行われており、塗装面からの跳ね返りや風の影響により浮遊した塗料粒子が飛散しないように樹脂繊維からなる遮蔽ネットを作業者の外側に張るようになっていた。
【0003】
【発明が解決しようとする課題】
このような方法では塗料の塗着率が低く、浮遊する塗料粒子により作業環境が悪く、また、遮蔽ネットから漏れ出して飛散する塗料粒子も少なくないという問題があった。
【0004】
このため、静電塗装の適用が考えられたが、建物の外壁はコンクリートまたは木材がほとんどで導電性が低く、強い静電界を形成することが困難であって塗料粒子の塗着率を十分に高めることができないことから、浮遊する塗料粒子は減少するものの、作業環境をさらに向上し、遮蔽ネットから漏れ出す塗料粒子をさらに減少させなければならないという課題があり、また、橋梁においては強い風のために塗着率が低いという課題があった。
【0005】
【課題を解決するための手段、作用及び効果】
本発明は上記課題を解決するための手段として、静電塗装スプレイガンと構築物との間に形成された静電界の外側に接地した導電性材料からなる遮蔽ネットを張る構成としたことにより、遮蔽ネットとスプレイガンとの間に静電界が形成され、浮遊する塗料粒子が遮蔽ネットに吸引されて付着するため、作業環境が向上するとともに外部に飛散する塗料粒子を著しく減少させることができる効果がある。
【0006】
【発明の実施の形態】
以下、本発明の一実施の形態を添付図面に基づいて説明する。
【0007】
図1において、aは地面b上に建てられた建物の外壁であって、作業者cの持つスプレイガン1により塗料が吹き付けられるようになっている。
【0008】
スプレイガン1はエアー静電スプレイガンであって、塗料タンク2から圧送された塗料がコンプレッサ3から圧送された空気により微粒化して噴出するようになっているとともに、高電圧発生機4の正極が地面bに接地され、負極が高電圧ケーブルを介してスプレイガン1に接続されていて、スプレイガン1と外壁aとの間に形成された静電界の作用により塗料粒子が外壁aに吸引されて塗着するようになっている。
【0009】
しかしながら、外壁aは、コンクリートまたは木材などであって導電性が低いため、工場内のブースにおいて金属部品を静電塗装するのに比べると塗着率は高くない。
【0010】
このため、非静電塗装に比べれば少ないものの、外壁aから跳ね返ったり、風の影響を受けたりして塗料粒子が浮遊する。
【0011】
そこで、本実施の形態においては作業者cの外側に図示しない金属製のポールで枠を組み、その枠に金網または合成樹脂にカーボンを混入した繊維を編んだ網や導電性塗料を塗布した網などの導電性の高い遮蔽ネット5を張って接地しておく。
【0012】
すると、遮蔽ネット5が正極となって浮遊した塗料粒子が吸引されるため作業場の環境が向上するとともに、塗料粒子が外部へ飛散するのが防止される。
【0013】
本発明は橋梁のように風により塗料が飛散し易い構築物の外面塗装にも有効である。
【0014】
なお、スプレイガンには自動ガンを用いてもよい。
【図面の簡単な説明】
【図1】本発明の一実施の形態の説明図である。
【符号の説明】
1:スプレイガン
2:塗料タンク
3:コンプレッサ
4:高電圧発生機
5:遮蔽ネット
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for electrostatic coating of an outer surface of a structure such as a building or a bridge.
[0002]
[Prior art]
Conventionally, the outer surface of the structure is sprayed non-electrostatically, and a shielding net made of resin fibers is stretched outside the operator so that paint particles that have floated due to splashing from the painted surface or the influence of wind are not scattered. It was like that.
[0003]
[Problems to be solved by the invention]
Such a method has a problem that the coating rate of the paint is low, the working environment is poor due to the floating paint particles, and there are not a few paint particles that leak from the shielding net and scatter.
[0004]
For this reason, the application of electrostatic coating was considered, but the outer wall of the building is mostly concrete or wood and has low conductivity, and it is difficult to form a strong electrostatic field, and the coating rate of the paint particles is sufficient. Although it cannot be increased, the floating paint particles are reduced, but there is a problem that the work environment must be further improved and the paint particles leaking from the shielding net must be further reduced. Therefore, there was a problem that the coating rate was low.
[0005]
[Means, actions and effects for solving the problems]
As a means for solving the above-mentioned problems, the present invention has a configuration in which a shielding net made of a conductive material grounded is stretched outside the electrostatic field formed between the electrostatic coating spray gun and the structure. An electrostatic field is formed between the net and the spray gun, and the floating paint particles are attracted and adhered to the shielding net. This improves the working environment and significantly reduces the paint particles scattered outside. is there.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
[0007]
In FIG. 1, a is an outer wall of a building built on the ground b, and the paint is sprayed by a spray gun 1 possessed by an operator c.
[0008]
The spray gun 1 is an air electrostatic spray gun, in which the paint pumped from the paint tank 2 is atomized by the air pumped from the compressor 3 and ejected, and the positive electrode of the high voltage generator 4 is The ground b is grounded, the negative electrode is connected to the spray gun 1 via a high voltage cable, and the paint particles are attracted to the outer wall a by the action of the electrostatic field formed between the spray gun 1 and the outer wall a. It comes to be painted.
[0009]
However, since the outer wall a is made of concrete or wood and has low conductivity, the coating rate is not high compared to electrostatic coating of metal parts at a booth in a factory.
[0010]
For this reason, although less compared with non-electrostatic coating, the paint particles float due to splashing from the outer wall a or the influence of wind.
[0011]
Therefore, in the present embodiment, a frame is formed by a metal pole (not shown) on the outside of the worker c, and a mesh made of a metal mesh or a fiber in which carbon is mixed into a synthetic resin or a mesh coated with a conductive paint is applied to the frame. A highly conductive shielding net 5 such as is stretched and grounded.
[0012]
Then, since the floating coating particles are attracted by the shielding net 5 as a positive electrode, the workplace environment is improved and the coating particles are prevented from scattering to the outside.
[0013]
The present invention is also effective for exterior coating of structures such as bridges where paint is easily scattered by wind.
[0014]
An automatic gun may be used as the spray gun.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an embodiment of the present invention.
[Explanation of symbols]
1: Spray gun 2: Paint tank 3: Compressor 4: High voltage generator 5: Shield net

Claims (1)

高電圧発生機の一方の極を接地し、他方の極をスプレイガンに接続して、接地された構築物とスプレイガンとの間に形成された高電位の静電界の作用によりスプレイガンから吐出された塗料粒子が構築物の外面に塗着するようにした構築物の外面静電塗装方法において、前記スプレイガンと前記構築物との間に形成された前記静電界の外側に接地した導電性材料からなる遮蔽ネットを張ることを特徴とする構築物の外面静電塗装方法。Grounded one pole of the high voltage generator, and the other pole connected to the spray gun, the discharge from the spray gun by the action of the electrostatic field which is formed a high potential between the construct and the spray gun which is grounded the outer surface electrostatic coating method of the constructs as paint particles are coated on the outer surface of the construct, a conductive material which is grounded to the outside of the electrostatic field formed between the construct and the spray gun A method for electrostatically painting an outer surface of a structure, characterized in that a shielding net comprising:
JP35925596A 1996-01-05 1996-12-26 External electrostatic coating method for construction Expired - Lifetime JP3671993B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35925596A JP3671993B2 (en) 1996-01-05 1996-12-26 External electrostatic coating method for construction

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1711796 1996-01-05
JP8-17117 1996-01-05
JP35925596A JP3671993B2 (en) 1996-01-05 1996-12-26 External electrostatic coating method for construction

Publications (2)

Publication Number Publication Date
JPH09239309A JPH09239309A (en) 1997-09-16
JP3671993B2 true JP3671993B2 (en) 2005-07-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP35925596A Expired - Lifetime JP3671993B2 (en) 1996-01-05 1996-12-26 External electrostatic coating method for construction

Country Status (1)

Country Link
JP (1) JP3671993B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103934174A (en) * 2014-03-07 2014-07-23 陈应龙 Bathroom hardware surface processing method
JP6661194B2 (en) * 2016-03-16 2020-03-11 国立研究開発法人産業技術総合研究所 Yarn processing device and yarn processing method
CN105797943A (en) * 2016-05-25 2016-07-27 奇瑞汽车股份有限公司 Coating process capable of lowering VOCs

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Publication number Publication date
JPH09239309A (en) 1997-09-16

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