JPH0515040B2 - - Google Patents
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- Publication number
- JPH0515040B2 JPH0515040B2 JP62137763A JP13776387A JPH0515040B2 JP H0515040 B2 JPH0515040 B2 JP H0515040B2 JP 62137763 A JP62137763 A JP 62137763A JP 13776387 A JP13776387 A JP 13776387A JP H0515040 B2 JPH0515040 B2 JP H0515040B2
- Authority
- JP
- Japan
- Prior art keywords
- static
- potential
- polarity
- film
- frequency
- 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
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- Elimination Of Static Electricity (AREA)
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、長尺なプラスチツクフイルムまたは
紙テープ等であつて例えば走行案内されるローラ
等との摩擦で帯電した走行物体を除電する帯電走
行物体の除電方法に関する。Detailed Description of the Invention "Industrial Application Field" The present invention relates to a charged traveling object, which is a long plastic film or paper tape, and which eliminates static electricity from a charged traveling object by friction with a roller or the like that is guided in its travel. Regarding static electricity removal method.
「従来の技術及びその問題点」
例えば磁気テープ素材となる長尺なプラスチツ
クフイルムは、製造後に案内ローラで案内されな
がら巻き取られているが、案内ローラ等との摩擦
で帯電しているシワになつて巻き取られるなどの
不都合があることから、巻き取りの前段階に除電
することが行われている。``Prior art and its problems'' For example, long plastic films that are used as magnetic tape materials are wound up while being guided by guide rollers after manufacture, but wrinkles that are charged due to friction with the guide rollers, etc. Since there are inconveniences such as curling up and winding up, static electricity is removed before winding up.
従来、その除電は、直流除電器のみを用い、そ
の放電電極をフイルムに対向させて直流コロナ放
電を生じさせて行つていた。その場合、放電電極
とフイルム間距離の精度を上げることにより、除
電性能の向上及び均一除電を図つていたが、放電
電極とヌイルム間距離の精度を高くすることは非
常に困難で、所期の目的を達成することができな
く、またフイルムが高速で走行すると、除電作用
が追従できなかつた。 Conventionally, static elimination has been carried out using only a DC static eliminator, with its discharge electrode facing the film to generate DC corona discharge. In this case, the aim was to improve static elimination performance and uniform static elimination by increasing the accuracy of the distance between the discharge electrode and the film, but it was extremely difficult to increase the accuracy of the distance between the discharge electrode and the film, and it was difficult to achieve the desired goal. The purpose of this method could not be achieved, and when the film ran at high speed, the static elimination action could not follow.
本発明の目的はこのような問題点を解決するこ
とにある。 An object of the present invention is to solve these problems.
「問題点を解決するための手段」
本発明では、帯電している走行物体を高周波除
電器による高周波コロナ放電で除電処理した後、
その高周波除電処理後の走行物体の残留電位と極
性を電位検出器で検出し、その検出電位及び極性
に従つて直流除電器を自動制御することにより、
該直流除電器により残留帯電極性とは逆極性のし
かも残留電位と相殺する直流コロナ放電を生じさ
せて中和除電する。"Means for Solving the Problems" In the present invention, after a charged traveling object is subjected to static neutralization treatment by high-frequency corona discharge using a high-frequency static eliminator,
By detecting the residual potential and polarity of the moving object after high-frequency static elimination treatment with a potential detector, and automatically controlling the DC static eliminator according to the detected potential and polarity,
The DC static eliminator generates a DC corona discharge which is opposite in polarity to the polarity of the residual charge and cancels out the residual potential, thereby neutralizing and eliminating the static charge.
「作用」
帯電している走行物体は、高周波コロナ放電に
よるプラズ及びマイナスの電離イオンによつて表
面の不均一な帯電を均一にされる。その作用は高
周波であるため、走行物体が高速で走行していて
も的確に行われる。しかし、高周波除電は交流除
電であるため、帯電電位を均一にできてもなかな
か零電位にはできなく、また除電し過ぎて逆極性
帯電になる場合もある。そこで、高周波除電後
に、その残留電位の極性とは逆極性の直流コロナ
放電を起こし、中和除電すれば、高周波除電後の
残留電位を除去できる。また、フイルム等の走行
物体の内部が分極して帯電している場合、表面の
電位は内部の分極現象により表面に電位ムラとし
て表れるが、本発明のように第１段階で高周波除
電した後、第２段階で直流除電すると、次のよう
な作用効果がある。``Operation'' A charged moving object is uniformed from uneven charging on its surface by plasma and negative ionized ions generated by high-frequency corona discharge. Since the action is based on high frequency, it is performed accurately even when the object is traveling at high speed. However, since high-frequency static elimination is alternating current static elimination, even if the charged potential can be made uniform, it is difficult to reduce the potential to zero, and there are cases in which static electricity is removed too much, resulting in reverse polarity charging. Therefore, the residual potential after high-frequency static elimination can be removed by causing DC corona discharge with a polarity opposite to that of the residual potential to neutralize the static electricity. Furthermore, when the inside of a moving object such as a film is polarized and charged, the surface potential appears as potential unevenness on the surface due to the internal polarization phenomenon, but after high-frequency static elimination in the first step as in the present invention, DC static elimination in the second stage has the following effects.
すなわち、第１段階の高周波除電では、走行物
体表面（フイルム表面）から裏面に強電界を与え
と同時に、高周波コロナ放電でイオンを照射して
中和除電を行い、逆帯電が発生する領域（除電の
結果、初めとは極性が反転する領域）、又は除電
安定領域（イオン照射量を変化させても帯電電位
が変化しない領域）まで除電を行うことにより、
走行物体の表面の除電を一応行うとともに、内部
帯電の極性を一定に整える。 That is, in the first stage of high-frequency static elimination, a strong electric field is applied from the surface of the moving object (film surface) to the back surface, and at the same time, ions are irradiated with high-frequency corona discharge to neutralize and eliminate static electricity. As a result, by removing static electricity to the region where the polarity is reversed from the beginning) or to the stable static elimination region (the region where the charged potential does not change even if the ion irradiation amount is changed),
In addition to removing static electricity from the surface of the moving object, it also adjusts the polarity of internal charging to a constant level.
第２段階の直流除電では、高周波除電により内
部の極性が整えられて表面電位が同一極性の低電
位となつた後であるため、残留表面電荷を零電位
まで除電することが確実に可能となる。 In the second stage of DC static elimination, the internal polarity is adjusted by high-frequency static elimination and the surface potential becomes a low potential with the same polarity, so it is possible to reliably eliminate the residual surface charge to zero potential. .
「実施例」
以下、本発明の一実施例を図面を参照して説明
する。"Embodiment" Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
除電しようとする帯電走行体である長尺なプラ
スチツクフイルム（以下フイルムと略記する）１
は、ガイドローラ２及び接地された２個の金属製
アースローラ３，４に案内されながら矢印Ａ方向
に走行されて巻き取られる。このフイルム１に対
し、その走行方向に沿つて第１の集電式電位検出
器５、高周波除電器６、直流除電器７及び第２の
集電式電位検出器８が順次対向配設されている。 A long plastic film (hereinafter abbreviated as film) 1 which is a charged traveling body to be neutralized
is guided by a guide roller 2 and two grounded metal earth rollers 3 and 4, and is run in the direction of arrow A and wound up. A first current collecting potential detector 5, a high frequency static eliminator 6, a DC static eliminator 7, and a second current collecting potential detector 8 are arranged to face the film 1 in sequence along the running direction thereof. There is.
第１及び第２の電位検出器５及び８は、アメリ
シウム等の放射性物質によつて空気を電離させて
集電することにより帯電物の電位を無接触で検知
する従来公知のもので、第１の電位検出器５は高
周波除電器７によつて除電される前のフイルム１
の電位を検出し、第２の電位検出器８は、直流除
電器７によつて除電された後のフイルム１の電位
を検出する。 The first and second potential detectors 5 and 8 are conventionally known ones that detect the potential of a charged object without contact by ionizing air with a radioactive substance such as americium and collecting current. The potential detector 5 detects the film 1 before static electricity is removed by the high frequency static eliminator 7.
The second potential detector 8 detects the potential of the film 1 after being neutralized by the DC static eliminator 7.
高周波除電器６は、前後に長い絶縁ホルダ９の
下面にその長さ方向に一定の間隔をおいて多数本
の針状除電電極１０を突設したもので、アースロ
ーラ３との間で高周波コロナ放電を生じる。その
除電電極１０は、フイルム１に対する高周波除電
範囲を広くするため及び火花放電を避けるため
に、アースローラ３の中心とはフイルム１の走行
方向に距離L1だけずれた位置の上方でフイルム
１と所定の距離L2をおいて対向させてある。 The high-frequency static eliminator 6 has a large number of needle-shaped static eliminator electrodes 10 protruding from the lower surface of a longitudinally long insulating holder 9 at regular intervals in the longitudinal direction. Generates electrical discharge. In order to widen the high-frequency static elimination range for the film 1 and to avoid spark discharge, the static eliminating electrode 10 is connected to the film 1 at a position above the center of the earth roller 3 that is shifted by a distance L 1 in the running direction of the film 1. They are opposed to each other with a predetermined distance L2 between them.
直流除電器７は、前後に長い絶縁ホルダ１２の
下面にその長さ方向に一定の間隔をおいて多数本
の針状除電電極１３を突設するとともに、一対の
アースバー１４を除電電極１３の両側において絶
縁ホルダ１２に架設したもので、これら除電電極
１３とアースバー１４との間で直流コロナ放電を
生じる。その放電によつて生じるイオンはアース
ローラ４に吸引される。この直流除電器７の除電
電極１３も、アースローラ４の中心とはフイルム
１の走行方向に距離L3だけずれた位置の上方で
フイルム１と所定の距離L4をおいて対向させて
ある。本例では、距離L1とL3の関係はL1＜L3、
またL2とL4の関係はL2＜L4になつている。 The DC static eliminator 7 has a large number of needle-shaped static eliminator electrodes 13 protruding from the lower surface of a longitudinally long insulating holder 12 at regular intervals in the longitudinal direction, and a pair of ground bars 14 on both sides of the static eliminator electrodes 13. DC corona discharge occurs between these static elimination electrodes 13 and the earth bar 14. Ions generated by the discharge are attracted to the earth roller 4. The static eliminator 13 of the DC static eliminator 7 is also opposed to the film 1 at a predetermined distance L 4 above the center of the earth roller 4, which is shifted by a distance L 3 in the running direction of the film 1. In this example, the relationship between distances L 1 and L 3 is L 1 <L 3 ,
Furthermore, the relationship between L 2 and L 4 is L 2 <L 4 .
高周波除電器６は、第１の電位検知器５による
フイルム１の電位検出に基づき高周波除電制御回
路（図示せず）によつて印加電圧を自動制御され
る。また、直流除電器７は、第２の電位検出器８
によるフイルム１の電位検出に基づき直流除電制
御回路（図示せず）によつて印加電圧及びその極
性を自動制御される。この直流除電制御回路には
極性切換回路が含まれており、第２の電位検出器
８によつて検出されたフイルム１の帯電極性がプ
ラスのときは、直流除電器６にマイナスの直流電
圧が印加され、フイルム１の帯電極性がマイナス
のときは、プラスの直流電圧が印加される。 The applied voltage of the high-frequency static eliminator 6 is automatically controlled by a high-frequency static eliminator control circuit (not shown) based on the detection of the potential of the film 1 by the first potential detector 5. Further, the DC static eliminator 7 is connected to a second potential detector 8
The applied voltage and its polarity are automatically controlled by a DC static elimination control circuit (not shown) based on the detection of the potential of the film 1 by . This DC static elimination control circuit includes a polarity switching circuit, and when the charged polarity of the film 1 detected by the second potential detector 8 is positive, a negative DC voltage is applied to the DC static eliminator 6. When the charged polarity of the film 1 is negative, a positive DC voltage is applied.
今、フイルム１がマイナス帯電しているとする
と、その帯電電位が第１の電位検出器５によつて
検出され、その検出電位に応じた高周波電圧が高
周波除電器６の多数本の針状除電電極１０に印加
され、それとアースローラ３の外周面との間に高
周波コロナ放電が起こつてプラス及びマイナスの
電離イオンが生成し、フイルム１が除電される。
一般に、高周波除電ではなかなか零電位までは除
電できなく、また除電し過ぎて逆極性帯電になる
こともあるため、ここでの高周波除電では、それ
を避けつつ、フイルム１の表面の不均一な帯電を
均一にすることを意図している。その作用は高周
波であるため、フイルム１の走行速度が速くとも
的確に行われる。 Assuming that the film 1 is now negatively charged, the charged potential is detected by the first potential detector 5, and a high frequency voltage corresponding to the detected potential is applied to the high frequency static eliminator 6 through a large number of needle-like static eliminators. A high frequency corona discharge is generated between the electrode 10 and the outer peripheral surface of the earth roller 3 to generate positive and negative ionized ions, and the film 1 is neutralized.
In general, high-frequency static elimination is difficult to eliminate static electricity down to zero potential, and sometimes too much static electricity is removed, resulting in reverse polarity charging. is intended to be uniform. Since this action is performed using high frequency waves, it can be performed accurately even when the film 1 travels at a high speed.
直流除電器６は、上記のように第２の電位検出
器８によつて検出されたフイルム１の帯電極性が
プラスのときは、マイナスの直流電圧を印加さ
れ、フイルム１の帯電極性がマイナスのときは、
プラスの直流電圧を印加されるため、上記のよう
に帯電を均一化されたフイルム１は、直流除電器
７によるプラスまたはマイナスの直流コロナ放電
により中和除電される。しかも、直流除電器６に
印加される電圧は、それによる中和除電後のフイ
ルム１の帯電電位が高電位のときはそれに比例し
て高く、低電位のときは低くなるように時々刻々
に自動制御されるため、高周波コロナ放電による
除電後の残留電位は的確に中和除電される。 When the charged polarity of the film 1 detected by the second potential detector 8 is positive as described above, a negative DC voltage is applied to the DC static eliminator 6, so that the charged polarity of the film 1 becomes negative. when,
Since a positive DC voltage is applied, the film 1, which has been uniformly charged as described above, is neutralized and neutralized by positive or negative DC corona discharge by the DC static eliminator 7. In addition, the voltage applied to the DC static eliminator 6 is automatically set from time to time so that when the charged potential of the film 1 after neutralization and static elimination is high, the voltage is proportionally increased, and when the potential is low, the voltage is decreased. Since this is controlled, the residual potential after static elimination by high frequency corona discharge is accurately neutralized and static neutralized.
帯電走行物体として、表面抵抗100TΩ以上、
厚さ6μ〜40μのポリエステルフイルムを使用し、
これを次のような条件で除電したところ、ほぼ零
電位に除電できることが確証された。 Surface resistance of 100 TΩ or more as a charged moving object,
Using polyester film with a thickness of 6μ to 40μ,
When the static electricity was removed under the following conditions, it was confirmed that the static electricity could be removed to almost zero potential.
高周波除電器６の設定
印加電圧……AC2.5KV〜10KV
針状除電電極……0.9mmφ、10mm間隔、１列
アースローラとの距離L1……約30mm
フイルムとの距離L2……８〜10mm
除電有効幅……5800mm
最高除電速度……300ｍ／min
直流除電器７の設定
印加電圧……AC2.5KV〜15KV
針状除電電極……0.9mmφ、1.0mm間隔、１列
アースローラとの距離L1……約50mm
フイルムとの距離L2……30〜40mm
除電有効幅……5800mm
最高除電速度……300ｍ／min
「発明の効果」
以上の通り本発明の除電方法は、高周波数コロ
ナ放電によつてある程度のところまで除電すると
ともに帯電の均一化を図つた後、残留電位とは逆
極性の直流コロナ放電によつて中和除電するた
め、長尺なプラスチツクフイルム等をその走行速
度が高速でもほぼ零電位まで的確に除電できる。Setting of high frequency static eliminator 6 Applied voltage...AC2.5KV~10KV Needle-like static eliminator electrode...0.9mmφ, 10mm interval, 1 row Distance to earth roller L 1 ...Approx. 30mm Distance to film L2 ...8~ 10mm Static neutralization effective width...5800mm Maximum static neutralization speed...300m/min Setting of DC static eliminator 7 Applied voltage...AC2.5KV~15KV Needle-shaped static neutralization electrode...0.9mmφ, 1.0mm interval, 1 row Distance to earth roller L 1 ...Approx. 50mm Distance to the film L 2 ...30~40mm Static elimination effective width...5800mm Maximum static removal speed...300m/min "Effects of the Invention" As described above, the static electricity removal method of the present invention is based on high-frequency corona discharge. After neutralizing the static charge to a certain extent and making the charge uniform, DC corona discharge with the opposite polarity to the residual potential neutralizes and eliminates the static charge, so long plastic films can be moved at high speeds. However, static electricity can be removed accurately down to almost zero potential.
図面は本発明の一実施例を説明する説明図であ
る。
１……プラスチツクフイルム、６……高周波除
電器、７……直流除電器。８……電位検出器。
The drawings are explanatory diagrams for explaining one embodiment of the present invention. 1...Plastic film, 6...High frequency static eliminator, 7...DC static eliminator. 8...Potential detector.
Claims (1)
高周波コロナ放電で除電処理した後、その高周波
除電処理後の走行物体の残留電位と極性を電位検
出器で検出し、その検出電位及び極性に従つて直
流除電器を自動制御することにより、該直流除電
器により残留帯電極性とは逆極性のしかも残留電
位と相殺する直流コロナ放電を生じさせて中和除
電することを特徴とする帯電走行物体の除電方
法。1. After a charged running object is static-eliminated by high-frequency corona discharge using a high-frequency static eliminator, the residual potential and polarity of the running object after the high-frequency static neutralization process is detected by a potential detector, and the residual potential and polarity are detected according to the detected potential and polarity. Static neutralization of a charged traveling object, characterized in that by automatically controlling a DC static eliminator, the DC static eliminator generates a DC corona discharge having a polarity opposite to the residual charge polarity and canceling the residual potential, thereby neutralizing and neutralizing static electricity. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13776387A JPS63301495A (en) | 1987-06-02 | 1987-06-02 | How to remove static electricity from a charged moving object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13776387A JPS63301495A (en) | 1987-06-02 | 1987-06-02 | How to remove static electricity from a charged moving object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63301495A JPS63301495A (en) | 1988-12-08 |
| JPH0515040B2 true JPH0515040B2 (en) | 1993-02-26 |
Family
ID=15206261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13776387A Granted JPS63301495A (en) | 1987-06-02 | 1987-06-02 | How to remove static electricity from a charged moving object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63301495A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2651478B2 (en) * | 1994-12-15 | 1997-09-10 | 春日電機株式会社 | Static elimination method and device |
| DE69506251T2 (en) * | 1995-09-25 | 1999-04-22 | Kasuga Denki, Inc., Tokio/Tokyo | Method and device for charge removal and dedusting |
| EP1503614A3 (en) * | 2003-07-29 | 2014-10-01 | Toray Industries, Inc. | A static eliminator and a static eliminating method for an insulating sheet |
| JP4617757B2 (en) * | 2003-07-29 | 2011-01-26 | 東レ株式会社 | Electric insulation sheet neutralizing device and method, method for producing electric insulating sheet, and electric insulating sheet |
| JP4754408B2 (en) * | 2006-05-25 | 2011-08-24 | 大日本スクリーン製造株式会社 | Static eliminator, static eliminator and substrate processing apparatus provided with the static eliminator |
-
1987
- 1987-06-02 JP JP13776387A patent/JPS63301495A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63301495A (en) | 1988-12-08 |
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