JPH07161451A - Earth electrode for corona discharge generating device - Google Patents
Earth electrode for corona discharge generating deviceInfo
- Publication number
- JPH07161451A JPH07161451A JP30884593A JP30884593A JPH07161451A JP H07161451 A JPH07161451 A JP H07161451A JP 30884593 A JP30884593 A JP 30884593A JP 30884593 A JP30884593 A JP 30884593A JP H07161451 A JPH07161451 A JP H07161451A
- Authority
- JP
- Japan
- Prior art keywords
- outer peripheral
- peripheral ring
- ground electrode
- corona discharge
- scraper
- 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.)
- Granted
Links
Landscapes
- Spark Plugs (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電源に接続する電極針
と、この電極針と隙間を隔てて対向する接地電極との間
でコロナ放電を発生させるコロナ放電発生装置の接地電
極の汚れ防止装置に関し、特に網目状をなすフィラメン
トをシート状に分散させて不織布を製造する際に利用し
て好適なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to preventing contamination of the ground electrode of a corona discharge generator for generating corona discharge between an electrode needle connected to a power source and a ground electrode facing the electrode needle with a gap. The present invention relates to an apparatus, and is particularly suitable for use when a non-woven fabric is manufactured by dispersing filaments having a mesh shape in a sheet shape.
【０００２】[0002]
【従来の技術】高温高圧の重合体溶液を紡糸ノズルから
大気中等に減圧状態で吹き出すことにより溶剤を瞬間的
に蒸発させ、高度にフィブリル化した三次元網目構造の
繊維を連続して形成する、いわゆるフラッシュ紡糸法が
不織布等の製造に極めて有効であることが知られてい
る。このフラッシュ紡糸法を利用した不織布の製造技術
として、例えば特公昭４２−１９５２０号公報等で周知
のように、紡糸ノズルからの網目状をなすフィラメント
束を揺動する回転板に衝突させ、この網目状フィラメン
ト束を開繊して拡幅させ、次いで連続的に移動する捕集
装置の表面に当該網目状フィラメントを分散状態でシー
ト状に堆積させることにより、不織布とする方法があ
る。2. Description of the Related Art A high-temperature, high-pressure polymer solution is blown out from a spinning nozzle into the atmosphere or the like under reduced pressure to instantaneously evaporate a solvent, thereby continuously forming highly fibrillated fibers having a three-dimensional network structure. It is known that the so-called flash spinning method is extremely effective for producing nonwoven fabrics and the like. As a technique for producing a non-woven fabric using this flash spinning method, as is well known, for example, in Japanese Examined Patent Publication No. 19520/1987, a mesh-like filament bundle from a spinning nozzle is caused to collide with an oscillating rotating plate, and this mesh is used. There is a method in which a filamentous filament bundle is opened and widened, and then the mesh filaments are accumulated in a sheet form in a dispersed state on the surface of a continuously moving collecting device to form a nonwoven fabric.
【０００３】このフラッシュ紡糸法を利用した不織布の
製造技術の場合、捕集装置の表面に堆積する網目状フィ
ラメントの開繊状態を更に良好なものにするため、回転
板にて拡幅された網目状フィラメントをコロナ放電によ
って帯電させ、網目状フィラメントを相互に電気的に反
発させるようにした技術が、例えば米国特許第３４５６
１５６号明細書や特公昭４４−２１８１７号公報等で周
知となっている。In the case of the non-woven fabric manufacturing technique utilizing this flash spinning method, in order to further improve the opened state of the mesh-like filaments deposited on the surface of the collecting device, the mesh-like shape widened by the rotating plate is used. A technique in which filaments are electrically charged by corona discharge so that reticulated filaments electrically repel each other is disclosed in, for example, US Pat. No. 3,456.
It is well known in the specification of No. 156 and Japanese Patent Publication No. 44-21817.
【０００４】また、この場合コロナ放電を長時間にわた
って継続すると、次第に接地電極盤に異物が付着し放電
効率が低下する現象が出てきて、フィラメント開繊状態
が悪くなってくるが、これを防ぐため接地電極の表面に
除塵用ブラシを用いるクリーニング装置が、例えばＰＣ
Ｔ／８９／０２００５号公報で公知になっている。上述
したフラッシュ紡糸法による不織布製造装置の概念を図
７に示す。すなわち、接地電極１と対向する複数本の電
極針１２に開繊用直流高圧電源１１を接続し、コロナ放
電を発生させ、これら接地電極１と電極針１２との間に
網目状フィラメント１３を通過させ、これにより網目状
フィラメント１３を正負いずれかに帯電させ、反発させ
て開繊状態とし、この網目状フィラメント１３を捕集ネ
ット１４の表面に密着状態で堆積させ、シート状をなす
不織布１５を連続的に得るようにしている。Further, in this case, when corona discharge is continued for a long time, foreign matter gradually adheres to the ground electrode plate and discharge efficiency lowers, and the filament opening state deteriorates, but this is prevented. Therefore, a cleaning device using a dust removal brush on the surface of the ground electrode is, for example, a PC.
It is known from T / 89/0205. FIG. 7 shows the concept of the nonwoven fabric manufacturing apparatus by the flash spinning method described above. That is, a DC high voltage power source 11 for fiber opening is connected to a plurality of electrode needles 12 facing the ground electrode 1 to generate corona discharge, and a mesh filament 13 is passed between the ground electrode 1 and the electrode needles 12. By doing so, the mesh filament 13 is charged positively or negatively and repelled into an open state, and the mesh filament 13 is deposited on the surface of the collecting net 14 in an adhered state to form a sheet-shaped nonwoven fabric 15. I try to get it continuously.
【０００５】[0005]
【発明が解決しようとする課題】図７に示したフラッシ
ュ紡糸法によって不織布１５を連続的に製造する場合、
この不織布１５の原料の一部を構成する低分子量重合体
や添加剤等の微粒子の一部が、重合体および溶剤の相分
離過程において溶剤中に残留してしまい、気化した溶剤
中の汚れ成分として接地電極１と電極針１２との間の空
間に浮遊し、電極針１２および接地電極１に付着堆積す
る。このため、従来の不織布製造装置ではその運転時間
の経過と共に網目状フィラメント１３の開繊状態が悪化
し、得られる不織布１５が、開繊しない状態の網目状フ
ィラメント束を多く含み、しかも繊維密度の分布に大き
なむらが存在する、いわゆる目付け斑の大きなものとな
り、不織布としての品質が次第に低下してしまう問題が
あった。When the nonwoven fabric 15 is continuously manufactured by the flash spinning method shown in FIG. 7,
Part of the fine particles of the low molecular weight polymer and additives that compose a part of the raw material of the nonwoven fabric 15 remain in the solvent during the phase separation process of the polymer and the solvent, and the fouling component in the vaporized solvent As a result, it floats in the space between the ground electrode 1 and the electrode needle 12, and adheres and deposits on the electrode needle 12 and the ground electrode 1. For this reason, in the conventional nonwoven fabric manufacturing apparatus, the opened state of the mesh filaments 13 deteriorates with the lapse of the operating time, and the obtained nonwoven fabric 15 contains a large amount of mesh filament bundles in the unopened state, and further There is a problem in that there is a large unevenness in the distribution, that is, the so-called unevenness of weight is large, and the quality of the nonwoven fabric is gradually deteriorated.
【０００６】つまり、電極針１２および接地電極１に上
述した汚れ成分が付着していない場合には、接地電極１
と電極針１２との間に発生するコロナ放電の位置や放電
量が比較的安定しているのに対し、原料ポリマー中に含
まれる低分子量の重合体や添加剤等の微粒子が電極針１
２および接地電極１に付着すると、個々の電極針１２か
らのコロナ放電の方向や放電量にむらが生ずるため、接
地電極１と電極針１２との間に生成するイオン流の密度
分布等にむらが生じ、網目状フィラメント１３を均一に
帯電させることができなくなって、網目状フィラメント
の開繊状態が悪化してしまう。しかも、静電気による網
目状フィラメント１３の捕集ネット１４の表面に対する
吸着力が低下してしまうので、網目状フィラメント１３
の捕集状態がこの網目状フィラメントの随伴ガス流によ
って乱される結果、ウエッブの密度つまり、不織布１５
の繊維密度が不均一となって目付け斑が増大し、製品と
しての不織布の品位が低いものとなってしまう。That is, when the above-mentioned dirt component does not adhere to the electrode needle 12 and the ground electrode 1, the ground electrode 1
While the position and the amount of corona discharge generated between the electrode needle 12 and the electrode needle 12 are relatively stable, fine particles such as low molecular weight polymers and additives contained in the raw material polymer are the electrode needle 1
2 and the ground electrode 1 cause unevenness in the direction and amount of discharge of the corona discharge from the individual electrode needles 12, resulting in uneven density distribution of the ion current generated between the ground electrode 1 and the electrode needles 12. Occurs, the mesh filament 13 cannot be uniformly charged, and the opened state of the mesh filament deteriorates. Moreover, the adsorption force of the mesh filament 13 on the surface of the collecting net 14 due to static electricity is reduced, so that the mesh filament 13
As a result of disturbing the collection state of the mesh filaments by the gas flow of the mesh filaments, the density of the web, that is, the nonwoven fabric 15
The non-uniform fiber density causes an increase in the areal weight unevenness, and the quality of the nonwoven fabric as a product becomes low.
【０００７】また、さらに、従来の汚れ成分が付着堆積
する装置では定期的に不織布製造装置の運転を中断して
電極針１２および接地電極１の清掃を行う必要があり、
装置の稼働率低下に伴う製造コストの上昇を避けること
ができなかった。Further, in the conventional device for depositing and depositing dirt components, it is necessary to periodically suspend the operation of the nonwoven fabric manufacturing device to clean the electrode needle 12 and the ground electrode 1.
It was unavoidable that the manufacturing cost would rise due to the decrease in the operating rate of the equipment.
【０００８】[0008]
【発明の目的】本発明は、長時間に亙る連続運転を行っ
ても接地電極の汚れを抑制し得るコロナ放電発生装置を
提供することを目的とし、特にフラッシュ紡糸法による
不織布製造装置に利用して好適なコロナ放電発生装置を
提供しようとすることを目的とするものである。It is an object of the present invention to provide a corona discharge generator capable of suppressing soiling of the ground electrode even when it is continuously operated for a long time, and is particularly used for a nonwoven fabric manufacturing apparatus by a flash spinning method. It is an object of the present invention to provide a suitable corona discharge generator.
【０００９】[0009]
【課題を解決するための手段】本発明者らは本発明の目
的を達成すべく鋭意研究の結果、本発明に到達した。す
なわち、本発明の課題は、コロナ放電用の電源に接続す
る電極ベースの表面から突出する電極針と、上記電極針
の先端と隙間を隔てて対向する接地電極盤の外周部に外
周リングが固定された回転する接地電極とを有するコロ
ナ放電発生装置において、上記接地電極盤の回転方向に
対向して鋭角にしかも外周リングの表面に圧接してのみ
の先端状のテーパー部を有するスクレパーが設けられて
おり、上記スクレパーの先端が上記接地電極盤と外周リ
ング表面との段差の部分に接し、かつ、上記スクレパー
のテーパー部が外周リング表面に傾斜角をもって接して
いることを特徴とするコロナ放電発生装置の接地電極、
によって達成される。The present inventors have arrived at the present invention as a result of intensive research to achieve the object of the present invention. That is, an object of the present invention is to fix an outer peripheral ring to an outer peripheral portion of an electrode needle projecting from the surface of an electrode base connected to a power source for corona discharge, and an outer peripheral portion of a ground electrode board facing the tip of the electrode needle with a gap. A corona discharge generator having a rotating ground electrode is provided with a scraper having a tip-shaped tapered portion facing the rotation direction of the ground electrode plate at an acute angle and only in pressure contact with the surface of the outer ring. Corona discharge generation characterized in that the tip of the scraper is in contact with the step portion between the ground electrode plate and the outer peripheral ring surface, and the tapered portion of the scraper is in contact with the outer peripheral ring surface with an inclination angle. Device ground electrode,
Achieved by
【００１０】[0010]
【作用】本発明によると、不織布の製造方法に応用し
た、コロナ放電用の電源に接続した電極針と接地電極と
の間でコロナ放電が発生する装置において、放電時間が
長くなっても、接地電極に汚れ成分が付着堆積すること
がなく、コロナ放電量にむらが生じない。According to the present invention, in a device which is applied to a method for manufacturing a non-woven fabric and causes corona discharge between an electrode needle connected to a power source for corona discharge and a ground electrode, even if the discharge time is long, the device is grounded. No fouling component is attached and deposited on the electrode, and the corona discharge amount is uniform.
【００１１】[0011]
【実施例】本発明によるコロナ放電発生装置の接地電極
をフラッシュ紡糸法による不織布の製造装置に応用した
一実施例の概略断面構造を図６に示す。すなわち、上端
部が図示しない排気装置に排気管１８を介して接続する
密閉容器１９内の上部には、原料供給シリンダ２０が保
持され、この原料供給シリンダ２０内に形成された加圧
供給室には、不織布の原料となる重合体溶液が図示しな
い原料供給手段を介して加圧供給されるようになってお
り、原料供給シリンダ２０の先端には、紡糸ノズル２１
が設置されている。EXAMPLE FIG. 6 shows a schematic sectional structure of an example in which the ground electrode of the corona discharge generator according to the present invention is applied to a nonwoven fabric manufacturing apparatus by the flash spinning method. That is, the raw material supply cylinder 20 is held in the upper part of the closed container 19 whose upper end is connected to the exhaust device (not shown) through the exhaust pipe 18, and the pressure supply chamber formed in the raw material supply cylinder 20 The polymer solution, which is the raw material of the nonwoven fabric, is pressure-supplied through a raw material supply means (not shown). The spinning nozzle 21 is provided at the tip of the raw material supply cylinder 20.
Is installed.
【００１２】従って、加圧供給された重合体溶液は、上
記原料供給の手段によって紡糸ノズル２１を介して減圧
状態にある密閉容器１９内に水平に吹き出される。そし
て、重合体溶液中の溶媒成分が瞬間的に蒸発し、重合体
による三次元構造の網目状フィラメント１３が形成され
ることとなる。原料供給シリンダ２０の前方には、紡糸
ノズル２１と対向する円錐台状の傾斜面２２を先端に形
成した回転分散板２３が位置しており、この回転分散板
２３の傾斜面２２が紡糸ノズル２１に対して斜め下向き
に傾斜するように、当該回転分散板２３の回転軸２４が
密閉容器１９に対して駆動回転自在に取り付けられてい
る。Therefore, the polymer solution supplied under pressure is horizontally blown out into the closed container 19 in a depressurized state through the spinning nozzle 21 by the means for supplying the raw material. Then, the solvent component in the polymer solution is instantaneously evaporated, and the three-dimensional network filament 13 made of the polymer is formed. In front of the raw material supply cylinder 20, a rotary dispersion plate 23 having a truncated cone-shaped inclined surface 22 facing the spinning nozzle 21 at its tip is located, and the inclined surface 22 of this rotary dispersion plate 23 is the spinning nozzle 21. The rotary shaft 24 of the rotary dispersion plate 23 is rotatably attached to the closed container 19 so as to be inclined obliquely downward with respect to the closed container 19.
【００１３】従って、紡糸ノズル２１から重合体溶液を
吹き出した状態で回転分散板２３を揺動回転させること
により、網目状フィラメント１３が回転分散板２３の傾
斜面に衝突し、この回転分散板２３の揺動に伴って開幅
され、密閉容器１９の下方へ落下して行くようになって
いる。一方、密閉容器１９の下端部には、無端の捕集ネ
ット１４を巻き掛けた一対のローラ２５、２６がそれぞ
れ回転自在に設置されており、これらローラのいずれか
一方には図示しない搬送用駆動モータが連結されてい
る。また、図６中、右側に位置する一方のローラ２５の
上方には、捕集ネット１４上の網目状フィラメント１３
を押圧して緻密化させる仮接着ロール２７が回転自在に
設置されており、この仮接着ロール２７は捕集ネット１
４の搬送運動に連動して回転するようになっている。さ
らに、密閉容器の外側には、これら一方のローラ２５と
仮接着ロール２７とで挟圧成形された不織布１５を巻き
取るための巻取ドラム２８が回転自在に設置されてお
り、この巻取機の巻取ドラム２８には当該巻取ドラム２
８を所定の駆動トルクにて駆動回転させる図示しない巻
取用駆動モータが連結されている。なお、密閉容器内か
ら密閉容器外への不織布１５の搬送を可能とするため、
この密閉容器には不織布１５の通過を許容するスリット
状のシール開口部が形成されている。Therefore, when the rotation dispersion plate 23 is oscillated while the polymer solution is being blown out from the spinning nozzle 21, the mesh filaments 13 collide with the inclined surface of the rotation dispersion plate 23, and the rotation dispersion plate 23. The width of the closed container 19 is widened by the swinging of the closed container 19 and falls below the closed container 19. On the other hand, at the lower end of the closed container 19, a pair of rollers 25 and 26 around which the endless collection net 14 is wound are rotatably installed, and one of these rollers is not shown in FIG. The motor is connected. Further, in FIG. 6, above the one roller 25 located on the right side, the mesh filament 13 on the collecting net 14 is provided.
A temporary adhesive roll 27 for pressing and densifying is rotatably installed, and the temporary adhesive roll 27 is used for collecting net 1.
It is designed to rotate in tandem with the transport motion of 4. Further, on the outside of the closed container, a winding drum 28 for winding the non-woven fabric 15 sandwiched by the roller 25 and the temporary adhesive roll 27 is rotatably installed. The winding drum 28 of the winding drum 2
A winding drive motor (not shown) for driving and rotating 8 with a predetermined drive torque is connected. In addition, since it is possible to convey the nonwoven fabric 15 from the inside of the closed container to the outside of the closed container,
A slit-shaped seal opening that allows the nonwoven fabric 15 to pass therethrough is formed in this closed container.
【００１４】従って、回転分散板２３側から他方のロー
ラ２６側の捕集ネット１４上に落下する網目状フィラメ
ント１３は、上述した搬送用駆動モータの作動によって
搬送され、一方のローラ２５と仮接着ロール２７との間
を通過する間に緻密化された状態となり、巻取用駆動モ
ータの作動により回転する巻取ドラム２８に不織布１５
として巻取られてゆくようになっている。Therefore, the mesh filaments 13 falling from the side of the rotary dispersion plate 23 onto the collecting net 14 on the side of the other roller 26 are conveyed by the operation of the above-mentioned conveying drive motor and are temporarily bonded to one roller 25. The nonwoven fabric 15 is densified while passing between the roll 27 and the winding drum 28 which is rotated by the operation of the winding drive motor.
It is supposed to be wound up as.
【００１５】前記回転分散板２３の周囲には環状の接地
電極盤１７がこの回転分散板２３の回転軸２４と同軸状
をなして回転自在に配置されており、密閉容器１９外で
接地状態となっているこの接地電極盤１７には、図示し
ない回転駆動手段が連結されている。また、原料供給シ
リンダ２０と回転分散板２３との間には、紡糸ノズル２
１から吹き出る重合体溶液を囲むように密閉容器１９の
上部に図示しないブラケットを介して保持される馬蹄形
の電極針ベースホルダ２９には、接地電極盤１７側に突
出する複数本の開繊用の電極針１２が所定間隔で一体的
に突設されている。An annular ground electrode plate 17 is rotatably arranged around the rotary dispersion plate 23 so as to be coaxial with the rotary shaft 24 of the rotary dispersion plate 23, and is grounded outside the closed container 19. A rotation driving means (not shown) is connected to the ground electrode board 17, which is formed as shown in FIG. The spinning nozzle 2 is provided between the raw material supply cylinder 20 and the rotary dispersion plate 23.
In the horseshoe-shaped electrode needle base holder 29, which is held in the upper part of the closed container 19 via a bracket (not shown) so as to surround the polymer solution blown out from 1, a plurality of opening fibers protruding toward the ground electrode board 17 side are provided. Electrode needles 12 are integrally provided at predetermined intervals.
【００１６】開繊用のコロナ放電直流高圧電源１１によ
って開繊用の電極針１２と接地電極盤１７との間に電圧
が印加されると、これら開繊用の電極針１２と接地電極
盤１７との間でコロナ放電が発生するため、開繊用の電
極針１２と接地電極盤１７との間を通過する網目状フィ
ラメント１３が所定の電荷を帯びて相互に電気的に反発
し合い、良好な開繊状態となって捕集ネット１４側へ落
下する。When a voltage is applied between the opening-use electrode needle 12 and the ground electrode board 17 by the opening-use corona discharge DC high voltage power source 11, the opening-use electrode needle 12 and the ground electrode board 17 are provided. Since a corona discharge is generated between the opening and the opening, the mesh filaments 13 passing between the opening electrode needle 12 and the ground electrode board 17 carry a predetermined electric charge and electrically repel each other. It will be in an open state and will fall to the collection net 14 side.
【００１７】なお、本実施例では回転する接地電極盤１
７の表面を常に清浄な状態に保持するため、回転分散板
２３の上方で接地電極盤１７の表面に摺接する接地電極
盤の表面に除塵用ブラシ９を配置し、この表面の除塵用
ブラシ９をブラシ回転駆動軸１０によって垂直な軸回り
に駆動回転させ、接地電極盤１７の表面をこの除塵用ブ
ラシ９にて払拭するようにしている。また、接地電極盤
１７の直下には、開繊状態となった網目状フィラメント
１３を捕集ネット１４側へ導くフィラメント案内板３０
が配置されている。In this embodiment, the rotating ground electrode board 1 is used.
In order to always keep the surface of 7 in a clean state, a dust removing brush 9 is arranged on the surface of the ground electrode plate 17 which is in sliding contact with the surface of the ground electrode plate 17 above the rotary dispersion plate 23. Is driven and rotated about a vertical axis by a brush rotation drive shaft 10, and the surface of the ground electrode board 17 is wiped by the dust removing brush 9. Further, just below the ground electrode board 17, a filament guide plate 30 for guiding the opened filaments 13 to the collecting net 14 side.
Are arranged.
【００１８】前記他方のローラ２６を介して接地状態と
なった捕集ネット１４の上方には、この捕集ネット１４
の幅方向に配列する複数の中和用電極針３１が配置さ
れ、これら中和用電極針３１には高圧の中和用コロナ放
電の直流電源３２が接続している。これら中和用の電極
針３１と中和用コロナ放電の直流電源３２とは、上述し
た開繊用の電極針１２と開繊用のコロナ放電直流高圧電
源１１との接続状態とは逆極性にて接続されている。Above the collecting net 14 which is grounded via the other roller 26, the collecting net 14 is provided.
A plurality of neutralizing electrode needles 31 arranged in the width direction are arranged, and a DC power source 32 for high-voltage neutralizing corona discharge is connected to the neutralizing electrode needles 31. The neutralizing electrode needle 31 and the neutralizing corona discharge DC power source 32 have opposite polarities to the above-described connection state between the opening electrode needle 12 and the opening corona discharge DC high voltage power source 11. Connected.
【００１９】従って、中和用のコロナ放電電源３２によ
り中和用電極針３１と接地状態にある捕集ネット１４と
の間に電圧が印加されると、これら中和用電極針３２と
捕集ネット１４との間で網目状フィラメント１３の帯電
極性と逆極性のコロナ放電が発生するため、捕集ネット
１４上の網目状フィラメント１３の電荷が電気的に中和
され、仮接着ロール２７により圧着された不織布１５が
仮接着ロール２７や捕集ネット１４に電気的に吸着する
のを未然に防止することができる。これによって、網目
状フィラメント１３を捕集ネット１４の表面に密着する
ように分散状態で堆積させ、この捕集ネット１４や仮接
着ロール２７に吸着することなく搬送することが可能と
なる。Therefore, when a voltage is applied between the neutralizing electrode needle 31 and the collecting net 14 in the grounded state by the neutralizing corona discharge power source 32, the neutralizing electrode needle 32 and the collecting net 14 are collected. Corona discharge having a polarity opposite to the charging polarity of the mesh filament 13 is generated between the net 14 and the net 14, so that the charge of the mesh filament 13 on the collecting net 14 is electrically neutralized and pressure-bonded by the temporary adhesive roll 27. The non-woven fabric 15 thus formed can be prevented from being electrically adsorbed to the temporary adhesive roll 27 or the collecting net 14. As a result, the mesh filaments 13 are deposited in a dispersed state so as to be in close contact with the surface of the collecting net 14, and can be conveyed without being adsorbed to the collecting net 14 or the temporary adhesion roll 27.
【００２０】図４−ａ、図４−ｂにフラッシュ紡糸法の
不織布製造装置に使用される、本発明によるコロナ放電
発生装置の接地電極の一例を示し詳述する。本発明によ
る接地電極は、環状の接地電極盤１７と接地電極盤の外
側に固定された外周リング２とからなり、回転自在の構
造に設置され、図示しない駆動手段により一体となって
回転するように構成されている。接地電極盤１７の表面
には、除塵用ブラシ９が設置されており、図示しない駆
動手段によりブラシ回転駆動軸１０を回転させることに
よって、接地電極盤の表面に付着する汚れ成分は除去す
ることができる。4-a and 4-b show an example of the ground electrode of the corona discharge generator according to the present invention, which is used in the non-woven fabric manufacturing apparatus of the flash spinning method, and will be described in detail. The ground electrode according to the present invention comprises a ring-shaped ground electrode board 17 and an outer peripheral ring 2 fixed to the outside of the ground electrode board, is installed in a rotatable structure, and is rotated integrally by a driving means (not shown). Is configured. A dust removing brush 9 is installed on the surface of the ground electrode board 17, and the brush rotary drive shaft 10 is rotated by a driving means (not shown) to remove dirt components adhering to the surface of the ground electrode board. it can.
【００２１】本発明によるスクレパーは、偏平四角柱状
の先端がのみの刃状のもので、偏平四角柱の一つの長辺
を頂点とし鋭角にカットしたテーパー部分をもつ形状の
ものである。スクレパー３は、テーパー部分を下にした
のみの刃を、接地電極盤１７の外周側面と外周リング２
の表面との境部分の段差（図５のα）がある場合はのみ
の刃の端の部分が段差のかどに接し、外周リング表面に
テーパー部分が斜め（例えば４５°）になるようにして
密閉容器１９に設置されている。このような構成によ
り、スクレパー３が接地電極盤１７と外周リング２との
一体的回転に伴ない、外周リング２に付着した汚れ成
分、特に接地電極盤１７と外周リング２との接続部分の
段差αがある場合は段差αの角に付着した汚れ成分を除
去することができる。The scraper according to the present invention is a flat quadrangular prism-shaped blade having a chisel at its tip, and has a tapered portion with one long side of the flat quadrangular prism as an apex and cut at an acute angle. The scraper 3 includes a blade having a tapered portion only, the outer peripheral side surface of the ground electrode board 17 and the outer peripheral ring 2
If there is a step (α in Fig. 5) at the boundary with the surface of the blade, make sure that the edge part of the blade only touches the corner of the step and the taper portion is inclined (eg 45 °) on the outer peripheral ring surface. It is installed in a closed container 19. With such a configuration, as the scraper 3 rotates integrally with the ground electrode plate 17 and the outer peripheral ring 2, the dirt component attached to the outer peripheral ring 2, particularly the step difference at the connecting portion between the ground electrode plate 17 and the outer peripheral ring 2. When α is present, the dirt component attached to the corner of the step α can be removed.
【００２２】本発明に用いる外周リング２は、非導電性
の材質であり、硬度１０００ｋｇ／ｍｍ2 （ＨＶ）以上
のセラミックであることが好ましい。非導電性のセラミ
ックは、例えばＡＩ2 Ｏ3 、ＺｒＯ2 、またはＳｉＣが
好ましい。またスクレパー３の材質は金属であることが
好ましく、さらに、ステンレス等が好ましい。 このよ
うな材質で構成されているので外周リング２とスクレパ
ー３の接触により外周リング２に傷等の損傷を与えるこ
とがない。The outer peripheral ring 2 used in the present invention is made of a non-conductive material, and is preferably a ceramic having a hardness of 1000 kg / mm 2 (HV) or more. The non-conductive ceramic is preferably AI 2 O 3 , ZrO 2 , or SiC, for example. The scraper 3 is preferably made of metal, more preferably stainless steel or the like. Since the outer peripheral ring 2 and the scraper 3 are made of such a material, the outer peripheral ring 2 is not scratched or otherwise damaged.
【００２３】また接地電極盤１７の表面と外周リング２
の表面との接続部分は、段差がなく同じ高さか、もしく
は０．０３ｍｍ以下で低いことが好ましい。外周リング
の表面が接地電極盤の表面より高くなっていると、網目
状フィラメントがこの段差に引っかかり、開繊状態が不
均一になる。また段差αが、０．０３ｍｍより大きいと
汚れ成分の付着量が極端に増加する。スクレパー３が外
周リングに接触している面の幅（ア）は、外周リングの
表面を完全にワイピングするためにも外周リングの幅
（イ）と同じであるか、外周リングの幅（イ）より広い
ことが好ましく、さらに、好ましくは外周リングの幅
（イ）より１から１０ｍｍ広いことである。外周リング
２の外周面のエッジは、図５のβのように鋭角になって
いる。外周リングの外周面がナイフエッジのような鋭角
な構造のため網目状フィラメントが接地電極盤に沿って
流れ、外周リングから離れる際、網目状フィラメントに
帯電した静電気の力によって外周リングに吸着、停滞す
ることが防止できる。The surface of the ground electrode board 17 and the outer ring 2
It is preferable that the connecting portion with the surface of the same has the same height without a step or is as low as 0.03 mm or less. If the surface of the outer peripheral ring is higher than the surface of the ground electrode plate, the mesh filaments are caught in this step, and the spread state becomes uneven. Further, when the step α is larger than 0.03 mm, the amount of dirt components attached extremely increases. The width (a) of the surface where the scraper 3 is in contact with the outer peripheral ring is the same as the width (a) of the outer peripheral ring in order to completely wipe the surface of the outer peripheral ring, or the width (a) of the outer peripheral ring. The width is preferably wider, more preferably 1 to 10 mm wider than the width (a) of the outer peripheral ring. The edge of the outer peripheral surface of the outer peripheral ring 2 has an acute angle as indicated by β in FIG. Since the outer peripheral surface of the outer peripheral ring has a sharp structure such as a knife edge, the mesh filament flows along the ground electrode plate and when it separates from the outer peripheral ring, it is adsorbed and stagnant on the outer peripheral ring by the electrostatic force charged in the mesh filament. Can be prevented.
【００２４】次にスクレパーを保持するワイピング装置
の構造に関して図１、２、３を参照し、詳述する。スク
レパー３にはスクレパー保持ネジ６が通る長孔７が空け
られており、外周リングの方向に可動で常に一定の接圧
で接触できるようにするため、微調整できる構造になっ
ている。そしてスクレパー押さえネジ５とスクレパー押
さえスプリング８により、スクレパーの摩耗によってス
クレパーが短くなっていくことにかかわらず、常にスク
レパーを常に一定の接圧で外周リング２に押しつけてい
る。そのため長時間の生産運転においてスクレパーが摩
耗しても、スクレパーによる外周リングに付着する汚れ
成分の除去効果が低下することなく、均一な開繊状態を
保った不織布を得ることができる。Next, the structure of the wiping device for holding the scraper will be described in detail with reference to FIGS. The scraper 3 is provided with a long hole 7 through which the scraper holding screw 6 passes, and the structure is such that it can be finely adjusted so as to be movable in the direction of the outer peripheral ring and to be constantly in contact with a constant contact pressure. The scraper pressing screw 5 and the scraper pressing spring 8 constantly press the scraper against the outer peripheral ring 2 with a constant contact pressure, regardless of the fact that the scraper is shortened due to wear of the scraper. Therefore, even if the scraper is worn during a long-time production operation, the effect of removing dirt components adhering to the outer peripheral ring by the scraper does not decrease, and a nonwoven fabric in which a uniform open state is maintained can be obtained.
【００２５】[0025]
【実施例１】図６に示す不織布製造装置において、メル
トインデックス（ＭＩ）が０．８ｇ／１０ｍｉｎの高密
度ポリエチレン樹脂を１２．５重量％、トリクロロフル
オロメタン溶剤を８７．５重量％の割合で溶解させた溶
液を、図６に示す減圧用オリフィスから、予備減圧室内
で９０ｋｇ／ｃｍ2 ・Ｇに減圧した後、ノズル径１．１
１ｍｍ径のノズルから、上記高速度ポリエチレン樹脂の
紡糸ノズル１個当たりの吐出量が８００ｇ／ｍｉｎにな
るように設定しフラッシュ紡糸した。EXAMPLE 1 In the nonwoven fabric manufacturing apparatus shown in FIG. 6, 12.5% by weight of high density polyethylene resin having a melt index (MI) of 0.8 g / 10 min and 87.5% by weight of trichlorofluoromethane solvent. The pressure of the dissolved solution was reduced to 90 kg / cm 2 · G in the preliminary decompression chamber from the decompression orifice shown in FIG.
Flash spinning was performed from a nozzle having a diameter of 1 mm so that the discharge rate of the high-speed polyethylene resin per spinning nozzle was 800 g / min.
【００２６】紡糸された三次元の網目状繊維であるフィ
ラメントおよびガス流は、紡糸ノズル２１より水平方向
３０ｍｍの距離を置いてノズル軸に直角に配置した回転
分散板２３に衝突して拡幅開繊された後、本発明の外周
リングにスクレパーを設けたワイピング装置を有するコ
ロナ放電の接地電極とコロナ放電電極との間を通過させ
た。コロナ放電により三次元の網目状繊維であるフィラ
メントに電荷が与えられ、回転分散板２３の最下部より
垂直方向に３４５ｍｍ下方に設置された捕集ネット１４
上に堆積させ、搬送し、次いで捕集ネット上に堆積され
ている網目状フィラメントを仮接着ロール２７で圧着す
ることによって三次元の網目状構造の不織布を製造し
た。The filament and the gas flow, which are spun three-dimensional mesh-like fibers, collide with the rotary dispersion plate 23, which is placed at a distance of 30 mm in the horizontal direction from the spinning nozzle 21 and arranged at right angles to the nozzle axis, to widen and spread the fiber. After that, it was passed between the corona discharge ground electrode and the corona discharge electrode having a wiping device having a scraper provided on the outer peripheral ring of the present invention. The corona discharge gives an electric charge to the filament, which is a three-dimensional mesh-like fiber, and the collecting net 14 installed vertically 345 mm below the lowermost portion of the rotary dispersion plate 23.
A three-dimensional non-woven fabric having a three-dimensional net-like structure was manufactured by depositing it on top, transporting it, and then crimping the net-like filaments deposited on the collecting net with a temporary adhesive roll 27.
【００２７】ここで、コロナ放電発生装置の接地電極盤
１７として、材質がステンレスのものを用い、外周リン
グとして硬度１３００ｋｇ／ｍｍ2 （ＨＶ）のＺｒＯ2
を用いた。接地電極盤１７と外周リング２との段差の最
大値が０．０３ｍｍとなるように取り付けた接地電極１
を使用した。また接地電極盤１７は環状の直径１９０ｍ
ｍの円盤を用い、この接地電極盤に外径が２０４ｍｍ外
周リングを取り付け、固定した。スクレパーは、外周リ
ングに接触する面の長さが１０ｍｍで、厚みが２ｍｍの
ステンレスを外周リングの幅より長くなるようにして使
用した。そして、スクレパーの長孔７は３．５ｍｍであ
り、この範囲でスクレパー押さえスプリング８によって
外周リングの表面の方向に接圧が常に一定になるように
可動となっている。この接地電極に対向した、電極針が
回転円盤周り半円状に配置してあるコロナ放電直流高圧
電極に、放電電圧として−２３ｋＶの負直流電圧をか
け、網目状フィラメントに電荷を与えた。そしてその時
の放電電流値は約−０．２ｍＡであった。Here, the ground electrode board 17 of the corona discharge generator is made of stainless steel, and the outer ring is made of ZrO 2 having a hardness of 1300 kg / mm 2 (HV).
Was used. The ground electrode 1 mounted so that the maximum value of the step between the ground electrode board 17 and the outer ring 2 is 0.03 mm.
It was used. The ground electrode board 17 has an annular diameter of 190 m.
Using a disk of m, an outer peripheral ring having an outer diameter of 204 mm was attached and fixed to this ground electrode disk. The scraper was made of stainless steel having a surface of 10 mm in contact with the outer ring and a thickness of 2 mm, which was longer than the width of the outer ring. The long hole 7 of the scraper is 3.5 mm, and the scraper pressing spring 8 is movable within this range so that the contact pressure is always constant in the direction of the surface of the outer peripheral ring. A negative DC voltage of -23 kV was applied as a discharge voltage to a corona discharge DC high voltage electrode having electrode needles arranged in a semicircular shape around a rotating disk, facing the ground electrode, and a charge was applied to the mesh filament. The discharge current value at that time was about -0.2 mA.
【００２８】このようにしてフラッシュ紡糸法による生
産運転を実施した場合、コロナ放電電圧が一定電圧のも
とで、生産運転開始後２０日経っても、不織布の繊維密
度の均一性が悪化し、目付け斑は大きくなり不織布の製
品の品位が悪化するという現象も認められなかった。ま
た外周リングおよび外周リングと接地電極盤との接続部
分には汚れ成分がほとんど付着していなかった。When the production operation by the flash spinning method is carried out in this manner, the uniformity of the fiber density of the non-woven fabric is deteriorated even after 20 days from the start of the production operation under the condition that the corona discharge voltage is constant. Neither was the phenomenon that the unevenness of weight was large and the quality of the non-woven fabric product deteriorated. Further, almost no dirt component was attached to the outer peripheral ring and the connecting portion between the outer peripheral ring and the ground electrode plate.
【００２９】[0029]
【比較例１】実施例１で示したコロナ放電発生装置の外
周リングのワイピング装置としてのスクレパーを取り外
す以外は、実施例１と同様の条件でフラッシュ紡糸法に
よる連続生産運転を実施した。コロナ放電直流高圧電圧
が一定電圧のもとでは、生産運転開始後１０日後から、
不織布の繊維密度の均一性が悪化し、目付け斑は大きく
なり不織布の製品の品位が悪化してくるという現象が認
められた。またそれ以降の網目状フィラメントの開繊状
態が悪化していく速度も速く、製品とはならない品位レ
ベルとなった。Comparative Example 1 A continuous production operation by the flash spinning method was carried out under the same conditions as in Example 1 except that the scraper as the wiping device for the outer peripheral ring of the corona discharge generator shown in Example 1 was removed. When the high voltage corona discharge DC voltage is constant, 10 days after the start of production,
It was confirmed that the uniformity of the fiber density of the non-woven fabric was deteriorated, the unevenness of the fabric weight was increased, and the quality of the non-woven fabric product was deteriorated. Further, the rate at which the opened state of the reticulated filaments subsequently deteriorated was also fast, and the quality level was such that the product did not become a product.
【００３０】また１３日間の運転後の、外周リングおよ
び外周リングと接地電極盤との接続部分の汚れ成分の付
着量は極めて多く、外周リングと接地電極盤との接続部
分の段差部分では、完全に汚れ成分が堆積していた。Further, after 13 days of operation, the amount of dirt components attached to the outer peripheral ring and the connecting portion between the outer peripheral ring and the ground electrode plate was extremely large, and at the step portion of the connecting portion between the outer peripheral ring and the ground electrode plate, it was completely Dirt components were deposited on the.
【００３１】[0031]
【比較例２】実施例１で示したコロナ放電発生装置の外
周リングのワイピング装置としてのスクレパーを取り外
し、接地電極盤のワイピング装置である回転自在の除塵
用ブラシを、外周リング表面が完全にワイピングできる
ような長さまで延長し、その除塵用ブラシにより外周リ
ング部分も接地電極盤と同様に、ワイピングできる機構
を持たせる以外は実施例１と同様の条件でフラッシュ紡
糸法による連続生産運転を実施した。[Comparative Example 2] The scraper as the wiping device for the outer peripheral ring of the corona discharge generator shown in the first embodiment was removed, and the rotatable dust removing brush as the wiping device for the ground electrode plate was completely wiped on the outer peripheral ring surface. The continuous production operation was carried out by the flash spinning method under the same conditions as in Example 1 except that the dust removal brush was used to extend the length to the extent possible and the outer peripheral ring portion also had a wiping mechanism similar to the ground electrode plate. .
【００３２】コロナ放電直流高圧電圧が一定電圧のもと
では、生産運転開始後１５日後から、不織布の繊維密度
の均一性が悪化し、目付け斑は大きくなり不織布の製品
の品位が悪化してくるという現象が認められた。またそ
れ以降の網目状フィラメントの開繊状態が悪化していく
速度は遅いものの、確実に開繊状態は悪化していき、不
織布製品の品位は低下していった。また２０日間の運転
後の、外周リング表面には汚れ成分の付着はほとんど認
められなかったものの、外周リングと接地電極盤の接続
部の段差部分には、除塵用ブラシでの汚れ成分の除去が
不十分であったため汚れ成分の付着量は多く、汚れ成分
が堆積していた。When the DC high voltage of corona discharge is constant, the uniformity of the fiber density of the non-woven fabric is deteriorated 15 days after the start of the production operation, and the nonuniformity of the fabric is increased to deteriorate the quality of the non-woven fabric product. The phenomenon was confirmed. Further, although the rate at which the opened state of the mesh-like filaments deteriorates thereafter is slow, the opened state surely deteriorates and the quality of the non-woven fabric product deteriorates. Also, after the operation for 20 days, almost no dirt components were adhering to the surface of the outer ring, but at the step of the connection part between the outer ring and the ground electrode panel, the dirt brush was used to remove the dirt components. Since the amount was insufficient, the amount of the soil component adhered was large, and the soil component was accumulated.
【００３３】[0033]
【実施例２】実施例１で示したコロナ放電発生装置の外
周リングとして材質が硬度１８００ｋｇ／ｍｍ2 （Ｈ
Ｖ）のＡＩ2 Ｏ3 のセラミックを使用する以外は実施例
１と同様の条件でフラッシュ紡糸法による生産運転を実
施した。実施例１と同様、コロナ放電直流高圧電圧が一
定電圧のもとで、生産運転開始後２０日経っても、不織
布の繊維密度の均一性が悪化し、目付け斑は大きくなり
不織布の製品の品位が悪化するという現象も認められな
かった。また外周リングおよび外周リングと接地電極盤
との接続部分には汚れ成分がほとんど付着していなかっ
た。[Embodiment 2] The material for the outer peripheral ring of the corona discharge generator shown in Embodiment 1 is 1800 kg / mm 2 (H in hardness).
The production operation by the flash spinning method was carried out under the same conditions as in Example 1 except that the V 2 ) ceramic of AI 2 O 3 was used. As in Example 1, even when 20 days passed after the start of the production operation under the constant high voltage of the corona discharge DC high voltage, the uniformity of the fiber density of the non-woven fabric was deteriorated, and the mottled spots became large and the quality of the non-woven fabric product was improved. It was not observed that the phenomenon deteriorated. Further, almost no dirt component was attached to the outer peripheral ring and the connecting portion between the outer peripheral ring and the ground electrode plate.
【００３４】[0034]
【実施例３】実施例１で示したコロナ放電発生装置の外
周リングとして材質が硬度２２００ｋｇ／ｍｍ2 （Ｈ
Ｖ）のＳｉＣのセラミックを使用する以外は実施例１と
同様の条件でフラッシュ紡糸法による生産運転を実施し
た。実施例１と同様、コロナ放電直流高圧電圧が一定電
圧のもとで、生産運転開始後２０日経っても、不織布の
繊維密度の均一性が悪化し、目付け斑は大きくなり不織
布の製品の品位が悪化するという現象も認められなかっ
た。また外周リングおよび外周リングと接地電極盤との
接続部分には汚れ成分がほとんど付着していなかった。[Embodiment 3] The material for the outer peripheral ring of the corona discharge generator shown in Embodiment 1 is 2200 kg / mm 2 (H
A production operation was carried out by the flash spinning method under the same conditions as in Example 1 except that the V) SiC ceramic was used. As in Example 1, even when 20 days passed after the start of the production operation under the constant high voltage of the corona discharge DC high voltage, the uniformity of the fiber density of the non-woven fabric was deteriorated, and the mottled spots became large and the quality of the non-woven fabric product was improved. It was not observed that the phenomenon deteriorated. Further, almost no dirt component was attached to the outer peripheral ring and the connecting portion between the outer peripheral ring and the ground electrode plate.
【００３５】[0035]
【発明の効果】本発明の効果を示す具体例として、前述
した実施例１、２、３および比較例１、２の生産運転の
結果に基づき詳述する。表１に示すように、外周リング
にワイピング装置をもたない場合では、外周リング部分
に汚れ成分が堆積し、網目状フィラメントの帯電状態が
不均一なものとなり、そして開繊状態が悪化するため、
不織布の製品の品位が著しく低下し、長時間に渡り連続
的に不織布を製造することが不可能となる。As a concrete example showing the effect of the present invention, it will be described in detail based on the results of the production operation of the above-mentioned Examples 1, 2 and 3 and Comparative Examples 1 and 2. As shown in Table 1, when the outer peripheral ring does not have a wiping device, dirt components accumulate on the outer peripheral ring portion, the charged state of the mesh filament becomes non-uniform, and the spread state deteriorates. ,
The quality of the non-woven fabric product remarkably deteriorates, making it impossible to continuously manufacture the non-woven fabric for a long time.
【００３６】また、接地電極盤のワイピング装置として
の除塵用ブラシによって、外周リングも同時にワイピン
グする機構においても、接地電極盤と外周リングとの接
続部である段差部分の汚れ成分の除去は不十分であり、
ワイピング装置が全くない場合に比べて、不織布製造設
備の長時間の連続運転において、高品質の不織布を製造
することができる連続運転時間はわずかに延びるだけで
ある。Further, even in the mechanism of wiping the outer peripheral ring at the same time with the dust removing brush as the wiping device for the ground electrode plate, the removal of the dirt component at the step portion which is the connecting portion between the ground electrode plate and the outer peripheral ring is insufficient. And
In the continuous operation of the nonwoven fabric manufacturing facility for a long time, the continuous operation time capable of producing a high quality nonwoven fabric is slightly extended as compared with the case where there is no wiping device.
【００３７】しかしながら、外周リングの材質として硬
度が１０００ｋｇ／ｍｍ2 （ＨＶ）のセラミックを利用
し、外周リングのワイピング装置としてスクレパーを利
用することにより、汚れ成分が外周リングに付着、堆積
することを防止することができ、網目状フィラメントの
帯電状態が不均一になり、開繊状態が悪化することによ
って生じる、網目状フィラメントの収束した束状部を多
く含み、また繊維密度の薄いところが存在し目付け斑の
大きなものとなり、不織布の製品の品位が悪化してくる
ということを防止することができ、高品質の不織布を連
続的に安定して製造することが可能となる。However, by using a ceramic having a hardness of 1000 kg / mm 2 (HV) as the material of the outer ring and a scraper as the wiping device for the outer ring, it is possible to prevent dirt components from adhering to and depositing on the outer ring. It is possible to prevent the uneven charging state of the mesh filaments and the deterioration of the open state, which includes a large number of bundled bundles of mesh filaments. It is possible to prevent the unevenness of the product from being deteriorated and the quality of the nonwoven fabric product from being deteriorated, and it becomes possible to continuously and stably manufacture a high quality nonwoven fabric.
【００３８】[0038]
【表１】 [Table 1]
【００３９】表中の不織布製造設備の連続運転日数は、
外周リングに汚れ成分が付着し、網目状フィラメントの
開繊性が悪化するまでの運転日数を示す。The number of continuous operation days of the non-woven fabric manufacturing equipment in the table is
It shows the number of operating days until the openability of the mesh-like filament is deteriorated due to the attachment of dirt components to the outer peripheral ring.
【図１】外周リングのワイピング装置と接地電極盤と外
周リングの拡大斜視図。FIG. 1 is an enlarged perspective view of a peripheral ring wiping device, a ground electrode board, and a peripheral ring.
【図２】ワイピング装置の中心を図１のＡ−Ａの垂直面
で切断し手前からみた断面図。FIG. 2 is a cross-sectional view of the center of the wiping device taken along the vertical plane AA of FIG. 1 as seen from the front.
【図３】ワイピング装置のスクレパー押さえネジ５の中
心を図１のＢ−Ｂで切断し、下から見た断面図。FIG. 3 is a cross-sectional view of the center of a scraper pressing screw 5 of the wiping device, taken along the line BB in FIG. 1 and seen from below.
【図４】ａは、外周リングのワイピング装置と接地電極
盤の除塵ブラシおよび接地電極盤の位置関係を模式的に
示す正面図。ｂは、外周リングのワイピング装置と接地
電極盤の除塵用ブラシおよび接地電極盤の位置関係を模
式的に示す側面図。FIG. 4A is a front view schematically showing the positional relationship between the wiping device for the outer peripheral ring, the dust removing brush of the ground electrode board, and the ground electrode board. FIG. 3B is a side view schematically showing the positional relationship between the outer ring wiping device, the dust removal brush of the ground electrode plate, and the ground electrode plate.
【図５】接地電極盤と外周リングとの接続部分を拡大し
た側面図。FIG. 5 is an enlarged side view of a connection portion between a ground electrode board and an outer peripheral ring.
【図６】本発明の実施例におけるフラッシュ紡糸法の不
織布製造装置の概略構造を示す断面図。FIG. 6 is a cross-sectional view showing a schematic structure of a flash-spinning nonwoven fabric manufacturing apparatus according to an embodiment of the present invention.
【図７】フラッシュ紡糸法による不織布製造装置におけ
るコロナ放電と接地電極盤の網目状フィラメントへの作
用を表わす概念図。FIG. 7 is a conceptual diagram showing the effects of corona discharge and a ground electrode board on the mesh filaments in the nonwoven fabric manufacturing apparatus by the flash spinning method.
１ 接地電極 ２ 外周リング ３ スクレパー ４ ワイピング装置 ５ スクレパー押さえネジ ６ スクレパー保持ネジ ７ 長孔 ８ スクレパー押さえスプリング ９ 除塵用ブラシ １０ ブラシ回転駆動軸 １１ コロナ放電直流高圧電源 １２ 電極針 １３ 網目状フィラメント １４ 捕集ネット １５ 不織布 １６ ネット進行方向 １７ 接地電極盤 １８ 排気管 １９ 密閉容器 ２０ 原料供給シリンダ ２１ 紡糸ノズル ２２ 傾斜面 ２３ 回転分散板 ２４ 回転軸 ２５ ローラ ２６ ローラ ２７ 仮接着ロール ２８ 巻取ドラム ２９ 電極針ベースホルダ ３０ フィラメント案内板 ３１ 中和用電極針 ３２ 中和用コロナ放電の直流電源 α 接地電極盤と外周リングとの段差 β 外周リングの先端エッジ ア 接触面の長さ イ 接地電極盤外周リングの幅 1 Grounding Electrode 2 Outer Ring 3 Scraper 4 Wiping Device 5 Scraper Holding Screw 6 Scraper Holding Screw 7 Long Hole 8 Scraper Holding Spring 9 Dust Removal Brush 10 Brush Rotating Drive Shaft 11 Corona Discharge DC High Voltage Power Supply 12 Electrode Needle 13 Mesh Filament 14 Capture Collecting net 15 Nonwoven fabric 16 Net advancing direction 17 Grounding electrode board 18 Exhaust pipe 19 Closed container 20 Raw material supply cylinder 21 Spinning nozzle 22 Sloping surface 23 Rotating dispersion plate 24 Rotating shaft 25 Roller 26 Roller 27 Temporary adhesive roll 28 Winding drum 29 Electrode needle Base holder 30 Filament guide plate 31 Neutralizing electrode needle 32 DC power source for neutralizing corona discharge α Step between ground electrode plate and outer ring β Edge of outer ring Edge edge of contact ring i Ground electrode plate outer ring width
Claims (1)
スの表面から突出する電極針と、上記電極針の先端と隙
間を隔てて対向する接地電極盤の外周部に外周リングが
固定された回転する接地電極とを有するコロナ放電発生
装置において、上記接地電極盤の回転方向に対向して鋭
角にしかも外周リングの表面に圧接してのみの先端状の
テーパー部を有するスクレパーが設けられており、上記
スクレパーの先端が上記接地電極盤と外周リング表面と
の段差の部分に接し、かつ、上記スクレパーのテーパー
部が外周リング表面に傾斜角をもって接していることを
特徴とするコロナ放電発生装置の接地電極。1. An electrode needle projecting from the surface of an electrode base connected to a power supply for corona discharge, and a rotation in which an outer peripheral ring is fixed to the outer peripheral portion of a ground electrode board facing the tip of the electrode needle with a gap. In a corona discharge generator having a ground electrode to be provided with a scraper having a tapered portion only facing the rotation direction of the ground electrode plate at an acute angle and in pressure contact with the surface of the outer ring, The tip of the scraper is in contact with the step portion between the ground electrode plate and the outer peripheral ring surface, and the tapered portion of the scraper is in contact with the outer peripheral ring surface with an inclination angle, which is the ground of the corona discharge generator. electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30884593A JP3417629B2 (en) | 1993-12-09 | 1993-12-09 | Ground electrode of corona discharge generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30884593A JP3417629B2 (en) | 1993-12-09 | 1993-12-09 | Ground electrode of corona discharge generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07161451A true JPH07161451A (en) | 1995-06-23 |
| JP3417629B2 JP3417629B2 (en) | 2003-06-16 |
Family
ID=17985974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30884593A Expired - Lifetime JP3417629B2 (en) | 1993-12-09 | 1993-12-09 | Ground electrode of corona discharge generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3417629B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102650274B1 (en) * | 2021-12-13 | 2024-03-22 | (주)씨앤투스 | Flash―Spun Apparatus with Air Curtain and Method thereof |
| KR102650276B1 (en) * | 2021-12-13 | 2024-03-22 | (주)씨앤투스 | Flash-Spun Apparatus with Cleaning Means |
-
1993
- 1993-12-09 JP JP30884593A patent/JP3417629B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3417629B2 (en) | 2003-06-16 |
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