JPH01186180A - Manufacture of electrostatic absorbent sheet - Google Patents
Manufacture of electrostatic absorbent sheetInfo
- Publication number
- JPH01186180A JPH01186180A JP1149688A JP1149688A JPH01186180A JP H01186180 A JPH01186180 A JP H01186180A JP 1149688 A JP1149688 A JP 1149688A JP 1149688 A JP1149688 A JP 1149688A JP H01186180 A JPH01186180 A JP H01186180A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- thermoplastic
- parts
- elastomer
- conductive carbon
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 230000002745 absorbent Effects 0.000 title 1
- 239000002250 absorbent Substances 0.000 title 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- 239000000057 synthetic resin Substances 0.000 claims abstract description 12
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 12
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 12
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 8
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000001179 sorption measurement Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 abstract description 7
- 239000000806 elastomer Substances 0.000 abstract description 7
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 3
- 239000011810 insulating material Substances 0.000 abstract description 2
- 239000003463 adsorbent Substances 0.000 abstract 3
- 239000006229 carbon black Substances 0.000 description 11
- 239000004014 plasticizer Substances 0.000 description 7
- 239000003381 stabilizer Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 229920003051 synthetic elastomer Polymers 0.000 description 4
- 239000005061 synthetic rubber Substances 0.000 description 4
- 229920000459 Nitrile rubber Polymers 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 2
- 239000011354 acetal resin Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000113 methacrylic resin Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- -1 ×1014Ω1 Chemical class 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は静電力を利用して紙やフィルムなどを吸着保持
する合成樹脂製の静電吸着用シート及びその製造方法に
関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electrostatic adsorption sheet made of synthetic resin that uses electrostatic force to adsorb and hold paper, film, etc., and a method for manufacturing the same.
（従来技術）
従来、静電吸着用シートを開示するものとして、特公昭
５５−２０８３０号、特公昭５７−５８８７２号及び実
公昭５３−１３３８９号公報等があり、それらは熱可塑
性樹脂単体又は該樹脂と合成ゴムとを主成分とするもの
である。(Prior Art) Conventionally, there are Japanese Patent Publications No. 55-20830, Japanese Patent Publication No. 58872-1987, and Japanese Utility Model Publication No. 13389-1989 as disclosing sheets for electrostatic adsorption, and these sheets are made of thermoplastic resin alone or The main components are resin and synthetic rubber.
又、上記公報から明らかなように静電吸着用シートにお
いては、誘電率や体積固有抵抗値が吸着性能上重要な要
素であることが知られる。Further, as is clear from the above publication, it is known that dielectric constant and volume resistivity are important factors in terms of adsorption performance in electrostatic adsorption sheets.
（発明が解決しようとする課題）
しかしながら、上記熱可塑性合成樹脂及び合成ゴムを主
成分とする場合は、製造上の問題として加工内容による
影響を受けやすいため、製品間で体積固有抵抗値等のバ
ラ付きが多く、不良率が非常に高いとともに精度の高い
値のシートを得るには困難が多かった。(Problem to be solved by the invention) However, when the above-mentioned thermoplastic synthetic resin and synthetic rubber are used as main components, it is easy to be affected by the processing content as a manufacturing problem, so the volume resistivity value etc. may vary between products. There was a lot of variation, the defective rate was very high, and it was difficult to obtain sheets with highly accurate values.
特に体積固有抵抗値が１０６〜１０１４Ω１程度のレベ
ルで、ある所定値のシートとして製造するのは困難であ
った。In particular, it was difficult to manufacture a sheet with a specific volume resistance value of about 10 6 to 10 14 Ω1.
例えば、熱可塑性のアクリル系合成樹脂に導電性力−ボ
ン（カーボンブラック）及びその他の添加剤を順次に配
合した後、シート加工した場合においては、抵抗値が１
０６０１未満では導電性カーボンの配合率に比例した抵
抗値のシートを定量的に得ることができたが、１０６〜
１０１４Ω１の範囲では得られたシートの抵抗値のバラ
付きが非常に多かった。For example, when a thermoplastic acrylic synthetic resin is sequentially blended with conductive carbon black and other additives and then processed into a sheet, the resistance value is 1.
At less than 0601, it was possible to quantitatively obtain a sheet with a resistance value proportional to the blending ratio of conductive carbon, but at 106~
In the range of 1014Ω1, the resistance values of the obtained sheets varied greatly.
上記現象は前記樹脂に合成ゴム（例えばニトリル・ブタ
ジェン・ラバー）を加えた場合も同様であった。The above phenomenon was the same when synthetic rubber (for example, nitrile butadiene rubber) was added to the resin.
この理由として、カーボンブラックを高分子化合物に分
散させた場合の導電機構は、非常に複雑であり、いろい
ろな説が提唱されているが、−膜内には次の２説が多く
理解されている。The reason for this is that the conduction mechanism when carbon black is dispersed in a polymer compound is extremely complex, and various theories have been proposed. There is.
■鎖状に連なったカーボン粒子鎖（ストラフチャー）に
よる導電通路説。■Conductive path theory due to carbon particle chains connected in a chain (strafture).
■分散したカーボン粒子のギャップを電子がジャンプし
て、電気が流れるトンネル効果説。■Tunnel effect theory where electrons jump through the gaps between dispersed carbon particles and electricity flows.
この為、導電性カーボンの基本的必要特性として、次の
ような要素が挙げられる。For this reason, the following elements are listed as the basic required characteristics of conductive carbon.
１、ストラフチャー（カーボン粒子鎖）が発達している
。1. Struffure (carbon particle chains) is developed.
２、粒子径が小さい。2. Particle size is small.
３、表面積が大きい（細孔が多いか、中空状である）。3. Large surface area (many pores or hollow).
４、電子を捕捉するような不純物が少ない。4. There are few impurities that trap electrons.
５、グラファイト化（結晶化）が発達している。5. Graphitization (crystallization) is developed.
従って、上記従来シートの場合は、シート化する際の温
度や圧力によりストラフチャーを分断したり、圧力によ
る表面積の変化を起し、安定したものを作り得ることが
困難であったと考えられる。Therefore, in the case of the above-mentioned conventional sheet, it is thought that it was difficult to produce a stable sheet because the strutures were divided due to the temperature and pressure when forming the sheet, and the surface area changed due to the pressure.
又、抵抗値が１０６０１未満のように、カーボンブラッ
クの粒子が、ある体積の中に多く分散し粒子どうしが近
くにいる状態の場合は定石的な計算値のシートを得られ
るが、１０ 〜１×１０１４Ω１のように高分子化合物
の中にカーボンブラックが少なく分散した状態の場合は
、カーボンブラックの導電特性が顕著に表われ、加工条
件を難易なものにしていたと考えられる。Also, if the resistance value is less than 10,601, where many carbon black particles are dispersed in a certain volume and the particles are close to each other, a sheet of standard calculated values can be obtained, but it is 10 to 1. In the case where a small amount of carbon black was dispersed in the polymer compound such as ×1014Ω1, the conductive properties of carbon black were evident, making the processing conditions difficult.
而して本発明が解決しようとする課題は、前記従来不具
合を解消し、所望の体積固有抵抗値を正確に実現した吸
着用シートを得ることにある。The problem to be solved by the present invention is to solve the above-mentioned conventional problems and to obtain an adsorption sheet that accurately realizes a desired volume resistivity value.
又、本発明の他の課題は得られるシート間の抵抗値のバ
ラ付きを少なくするとともにコストダウンを図るシート
の製造方法を提供することである。Another object of the present invention is to provide a sheet manufacturing method that reduces variation in resistance values between sheets and reduces costs.
（課題を達成するための手段）
斯る本発明の静電吸着用シートは、熱可塑性合成樹脂と
熱可塑性エラストマーとを主成分とし、それに導電性カ
ーボンを含有せしめて所定の体積固有抵抗値を有するこ
とを特徴とし、その製造方法は、先ず熱可塑性エラスト
マーに導電性カーボンを所定の配合比で加熱分散させ、
その侵、前記エラストマーに熱可塑性合成樹脂を配合し
た後シート加工を施こして吸着用シートを成形すること
を特徴とする。(Means for Achieving the Object) The electrostatic adsorption sheet of the present invention has a thermoplastic synthetic resin and a thermoplastic elastomer as main components, and contains conductive carbon therein to achieve a predetermined volume resistivity value. The method for manufacturing the same is as follows: First, conductive carbon is heated and dispersed in a thermoplastic elastomer at a predetermined blending ratio;
The method is characterized in that the elastomer is blended with a thermoplastic synthetic resin and then subjected to sheet processing to form an adsorption sheet.
熱可塑性合成樹脂は、ポリウレタンやメタクリル酸エス
テルあるいは塩化ビニル系、アクリル系。Thermoplastic synthetic resins include polyurethane, methacrylic acid ester, vinyl chloride, and acrylic.
スチロール系などの合成樹脂などを用い、熱可塑性エラ
ストマーには、前記樹脂に対し適合性２分散性のよいも
の、例えばポリエチレン系、ポリウレタン系、オレフィ
ン系、ポリエステル系などのエラストマーを用いる。A synthetic resin such as a styrene resin is used, and the thermoplastic elastomer is one having good compatibility and bidispersibility with the resin, such as a polyethylene-based, polyurethane-based, olefin-based, polyester-based elastomer.
導電性カーボンとしては、カーボンブラック等を用い、
この配１合率により、シートの体積固有抵抗値が決定さ
れる。As the conductive carbon, carbon black or the like is used,
This mixing ratio determines the volume resistivity value of the sheet.
上記製造方法において、先に熱可塑性エラストマーに導
電性カーボンを配合し、加熱分散させる工程は、該エラ
ストマーが常温では樹脂又はゴム状であり、高温では液
状になる性質に着目したものであり、これにより該工程
においてエラストマーの流動性が活性化し、さほどに強
い圧力をかけなくとも導電性カーボンを均一に分散させ
ることが容易となる。In the above manufacturing method, the step of first blending conductive carbon into a thermoplastic elastomer and dispersing it by heating focuses on the property that the elastomer is resin or rubber-like at room temperature and becomes liquid at high temperatures. This activates the fluidity of the elastomer in this step, making it easy to uniformly disperse the conductive carbon without applying very strong pressure.
又、前記エラストマーは合成ゴムと違って再利用が可能
であり、これにより合成樹脂を配合する前の前記工程後
に抵抗値がバラ付いた不良シートが発見されたときに、
その再使用に供し得る。シート加工は熱ロールによる圧
延成型、押出成型。Also, unlike synthetic rubber, the elastomer can be reused, so when a defective sheet with varying resistance values is discovered after the step before compounding the synthetic resin,
It can be subjected to reuse. Sheet processing involves rolling and extrusion using hot rolls.
あるいは射出成型などによる。Or by injection molding.
上記導電性カーボンを配合分散させた熱可塑性エラスト
マーに合成樹脂を配合する際には、必要に応じて適宜に
顔料、安定剤、可塑剤、滑剤、老化防止剤などの添加剤
を添加配合せしめる。When blending a synthetic resin with the thermoplastic elastomer in which the conductive carbon is blended and dispersed, additives such as pigments, stabilizers, plasticizers, lubricants, anti-aging agents, etc. are appropriately added and blended as necessary.
而して本発明の吸着用シートは、王者一体結合される絶
縁材料、電極群１表面シートの該表面シートとして使用
に供し、あるいは他の変形構造としてはシート内に電極
群を埋設一体構造とし、表衷両面に吸１ｍを有するシー
トとして使用する。Therefore, the adsorption sheet of the present invention can be used as the top sheet of the electrode group 1 top sheet using an insulating material that is integrally bonded, or as another modified structure, the electrode group can be embedded in the sheet as an integral structure. , used as a sheet with 1 m of suction on both sides.
（実施例）
次の試料Ａ−Ｆを製造し、それらの体積固有抵抗値（Ω
Ｃ講）を測定した。(Example) The following samples A-F were manufactured, and their volume resistivity values (Ω
Section C) was measured.
各試料Ａ−Ｆは押出成型機により０．５ｍｇｍ厚さのシ
ート材を製造し、１１０Ｘ１０ａサイズにナンブル数３
００片を作成して、その中から夫々サンプル番号１０、
２０．３０・・・３００のサンプルについて抵抗値を測
定したもので、その測定結果を第１図〜第６図に示す。Each sample A-F was made into a sheet material with a thickness of 0.5 mgm using an extrusion molding machine, and the number number was 3 in the size of 110 x 10a.
00 pieces were created, and sample numbers 10 and 10 were created respectively.
The resistance values were measured for 300 samples, and the measurement results are shown in FIGS. 1 to 6.
試料Ａ及びＢは本発明方法により製造した実施品、試料
Ｃ−Ｆは熱可塑性エラストマーを含まない従来比較品で
ある。Samples A and B are actual products manufactured by the method of the present invention, and samples C-F are conventional comparative products that do not contain a thermoplastic elastomer.
尚、抵抗値の測定法は、２３℃−５０％中に４８時間以
上調整後、室温２３℃、相対温度５０％の７内にて印加
した後、６０秒後に抵抗値を計測した。The resistance value was measured by adjusting the temperature at 23° C.-50% for 48 hours or more, applying the voltage at a room temperature of 23° C. and a relative temperature of 50%, and then measuring the resistance value 60 seconds later.
計測器は、ＹＯにＯＧ／ＶＡ ＨＥＷＬＥＴＴ−ＰＡ
ＣＫＡＲＤ４３２９ＨＨＩＧＨＲＥＳＩＳＴＡＮＣＥ
ＭＥＴＥＲを使用した。The measuring instrument is YO OG/VA HEWLETT-PA
CKARD4329HHIGH RESISTANCE
METER was used.
仄且Ａ
アセタール樹脂 ６０部
ウレタン系エラストマー ４０部
カーボンブラック ８部
安定剤 ２部
可塑剤 ２部
墓且旦
アセタール樹脂 ６０部
ウレタン系エラストマー ４０部
カーボンブラック ３．５部
安定剤 ２部
可塑剤 ２部
区且ぷ
メタクリル樹脂 ８０部
カーボンブラック ７部
安定剤 ２部可塑剤
３部
抜且旦
メタクリル樹脂 ８０部
カーボンブラック ３部
安定剤 ２部可塑剤
３部
区ｌ旦
ＡＢＳ樹脂 ７０部
ニトリルブタジェンラバー ４０部
カーボンブラック ８部
安定剤 ３．５部
可塑剤 ２部
基且王
ＡＢＳ樹脂 ７０部
ニトリルブタジェンラバー ４０部
カーボンブラック ４部
安定剤 ３．５部
可塑剤 ２部
測定結果によれば、従来比較品（試料Ｃ−Ｆ）は抵抗１
［１０６Ωα未満では安定したシートが得られるが（第
３図、第５図）、抵抗値１０６Ωαを越えてバラ付きが
大きいことが確認され（第４図。Acetal resin 60 parts Urethane elastomer 40 parts Carbon black 8 parts Stabilizer 2 parts Plasticizer 2 parts Acetal resin 60 parts Urethane elastomer 40 parts Carbon black 3.5 parts Stabilizer 2 parts Plasticizer 2 parts Methacrylic resin 80 parts Carbon black 7 parts Stabilizer 2 parts Plasticizer
3 parts extracted methacrylic resin 80 parts carbon black 3 parts stabilizer 2 parts plasticizer
3 parts ABS resin 70 parts nitrile butadiene rubber 40 parts carbon black 8 parts stabilizer 3.5 parts plasticizer 2 parts basic ABS resin 70 parts nitrile butadiene rubber 40 parts carbon black 4 parts stabilizer 3. 5 parts plasticizer 2 parts According to the measurement results, the conventional comparative products (sample C-F) had a resistance of 1
[When the resistance value is less than 106 Ωα, a stable sheet can be obtained (Figs. 3 and 5), but when the resistance value exceeds 106 Ωα, it is confirmed that there is large variation (Fig. 4).
第６図）、本発明実施品（試料Ａ及びＢ）にあっては何
れの範囲においても抵抗値のバラ付きが比較的少なく安
定したシートが得られたく第１図。6), and in the products implementing the present invention (samples A and B), stable sheets with relatively little variation in resistance value were obtained in any range, as shown in FIG.
第２図）。Figure 2).
（効果）
本発明によれば、熱可塑性エラストマーの媒介によって
導電性カーボンの分散性が均一になり、該カーボンの配
合比を決定することにより、所望の体積固有抵抗値を有
する吸着用シートが得られる。従って、微妙な体積固有
抵抗値の範囲のものを得ることが可能となり、吸着力の
強弱を設計上で計算し、計算値に近い吸着力のシートを
得て標準化が可能となる。(Effects) According to the present invention, the dispersibility of conductive carbon becomes uniform through the mediation of a thermoplastic elastomer, and by determining the blending ratio of the carbon, an adsorption sheet having a desired volume resistivity value can be obtained. It will be done. Therefore, it is possible to obtain a sheet with a delicate volume resistivity value, and it is possible to calculate the strength of the adsorption force in the design, obtain a sheet with an adsorption force close to the calculated value, and standardize it.
又、本発明の製造方法によれば、シート間における体積
固有抵抗値のバラ付きが少なく、従来の如くバラ付きの
多いシートを大量に製造し、それから必要なシートを選
び出す方法に較べて生産性に優れ、しかもエラストマー
の再利用が可能なことで大幅なコストダウンを図ること
ができる。In addition, according to the manufacturing method of the present invention, there is less variation in the volume resistivity value between sheets, and productivity is improved compared to the conventional method of manufacturing a large number of sheets with a large amount of variation and then selecting the necessary sheets from them. Moreover, since the elastomer can be reused, it is possible to significantly reduce costs.
第１図及び第２図は本発明実施量の測定結果を示すグラ
フ、第３図〜第６図は比較品の測定結果を示すグラフで
ある。
特許出願人 株式会社アビサレ
−ａ＊ｌ固真抵抗植
（ｊ’１ｃ７７ｔ）
□働−［ｌ＊抵抗植
ＣｎＣｒｎ）
□住１ｍ真抵抗植
須Ｃ電）FIGS. 1 and 2 are graphs showing the measurement results of the embodiment of the present invention, and FIGS. 3 to 6 are graphs showing the measurement results of comparative products. Patent Applicant Abisare Co., Ltd.-A*L True Resistance Plant (j'1c77t) □Work-[L*Resistance Plant CnCrn) □Dwelling 1m True Resistance Plant Cn)
Claims (2)
成分とし、それに導電性カーボンを含有せしめて所定の
体積固有抵抗値を有することを特徴とする静電吸着用シ
ート。(1) An electrostatic adsorption sheet characterized by having a thermoplastic synthetic resin and a thermoplastic elastomer as main components, containing conductive carbon therein, and having a predetermined volume resistivity value.
配合比で加熱分散させ、それに熱可塑性合成樹脂を配合
した後、シート加工を施こして成形することを特徴とす
る請求項第１項記載の静電吸着用シートの製造方法。(2) The method according to claim 1, characterized in that conductive carbon is heated and dispersed in a thermoplastic elastomer at a predetermined blending ratio, a thermoplastic synthetic resin is blended therein, and then sheet processing is performed and molded. A method for manufacturing an electrostatic adsorption sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1149688A JPH01186180A (en) | 1988-01-20 | 1988-01-20 | Manufacture of electrostatic absorbent sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1149688A JPH01186180A (en) | 1988-01-20 | 1988-01-20 | Manufacture of electrostatic absorbent sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01186180A true JPH01186180A (en) | 1989-07-25 |
Family
ID=11779639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1149688A Pending JPH01186180A (en) | 1988-01-20 | 1988-01-20 | Manufacture of electrostatic absorbent sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01186180A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6776027B2 (en) | 2000-08-17 | 2004-08-17 | Japan Tobacco Inc. | Cigarette inspection device |
| US7256979B2 (en) | 2001-08-01 | 2007-08-14 | Sharp Kabushiki Kaisha | Ion generator, and electric apparatus and air conditioning apparatus incorporating the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61200604A (en) * | 1985-02-28 | 1986-09-05 | 三菱電線工業株式会社 | Composition for electromagnetic shield |
-
1988
- 1988-01-20 JP JP1149688A patent/JPH01186180A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61200604A (en) * | 1985-02-28 | 1986-09-05 | 三菱電線工業株式会社 | Composition for electromagnetic shield |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6776027B2 (en) | 2000-08-17 | 2004-08-17 | Japan Tobacco Inc. | Cigarette inspection device |
| US7256979B2 (en) | 2001-08-01 | 2007-08-14 | Sharp Kabushiki Kaisha | Ion generator, and electric apparatus and air conditioning apparatus incorporating the same |
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