JPH0791398B2 - Conductive stretched polyolefin film - Google Patents
Conductive stretched polyolefin filmInfo
- Publication number
- JPH0791398B2 JPH0791398B2 JP62100826A JP10082687A JPH0791398B2 JP H0791398 B2 JPH0791398 B2 JP H0791398B2 JP 62100826 A JP62100826 A JP 62100826A JP 10082687 A JP10082687 A JP 10082687A JP H0791398 B2 JPH0791398 B2 JP H0791398B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- stretching
- stretched
- polyolefin film
- weight
- 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
Links
- 229920000098 polyolefin Polymers 0.000 title claims description 20
- 239000000843 powder Substances 0.000 claims description 22
- 229910052787 antimony Inorganic materials 0.000 claims description 4
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 4
- 239000006104 solid solution Substances 0.000 claims description 4
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 4
- 229910001887 tin oxide Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 description 8
- -1 polyethylene Polymers 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 239000010410 layer Substances 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910001361 White metal Inorganic materials 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 239000010969 white metal Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Conductive Materials (AREA)
Description
【発明の詳細な説明】 （イ）産業上の利用分野 本発明は、導電性に優れた延伸ポリオレフインフイルム
に関し、従来より各種包装材等として用いられている一
軸延伸ポリエチレンフイルム、二軸延伸ポリプロピレン
フイルム等に高い導電性を付与したものである。TECHNICAL FIELD The present invention relates to a stretched polyolefin film having excellent conductivity, and a uniaxially stretched polyethylene film and a biaxially stretched polypropylene film which have been conventionally used as various packaging materials and the like. Etc. with high conductivity.
（ロ）従来の技術 従来より、ポリオレフイン等熱可塑性樹脂のフイルムに
導電性を付与する方法として、これら熱可塑性樹脂に導
電性カーボンブラツク、金属および金属酸化物等の粉末
を配合することが知られている。(B) Conventional technology As a method of imparting conductivity to a film of a thermoplastic resin such as polyolefin, it has been known to blend powder of conductive carbon black, metal, metal oxide or the like into these thermoplastic resins. ing.
一方、延伸フイルムに導電性を付与するには、それら導
電性粉末を配合した熱可塑性樹脂フイルムを一軸または
二軸方向に延伸することが考えられるが、延伸切れが起
つて設定延伸倍率に延伸できなかつたり、またそのため
に導電性粉末の配合量を減らさざるを得ず充分な導電性
が得られなかつたりする外、延伸によつて導電性の急激
な低下が起るという問題がある。On the other hand, in order to impart conductivity to the stretched film, it is conceivable to stretch the thermoplastic resin film containing these conductive powders in a uniaxial or biaxial direction, but it may be stretched at a set stretch ratio due to stretching breakage. However, there is a problem in that the amount of the conductive powder blended must be reduced, and sufficient conductivity cannot be obtained. In addition, there is a problem that the conductivity is rapidly reduced due to stretching.
（ハ）発明が解決しようとする問題点 本発明は、導電性延伸ポリオレフインフイルムの有する
上述の問題点を解決すべくなされたものであり、従つ
て、本発明は、導電性粉末が高濃度に配合されているに
も拘らず高延伸倍率を保持し、かつ、延伸による導電性
の急激な低下をなくし、結果として導電性に優れた延伸
ポリオレフインフイルムを提供することを目的とする。(C) Problems to be Solved by the Invention The present invention has been made to solve the above-mentioned problems of the conductive stretched polyolefin film. Therefore, the present invention provides a conductive powder having a high concentration. It is an object of the present invention to provide a stretched polyolefin film which retains a high stretch ratio despite being blended and eliminates a sharp decrease in conductivity due to stretching, and as a result has excellent conductivity.
（ニ）問題点を解決するための手段 本発明の導電性延伸ポリオレフインフイルムは、以下詳
述すれば、少くとも一軸方向に延伸されたポリオレフイ
ンフイルムであつて、該ポリオレフインがその100重量
部に対して、１〜10m2/gの比表面積を有する白色金属酸
化物粉末の表面にアンチモン固溶の酸化錫からなる被覆
層が形成されてなる白色導電性粉末を40〜1000重量部含
有していることを特徴とする。(D) Means for Solving the Problems The conductive stretched polyolefin film of the present invention is, in detail below, a polyolefin film stretched at least uniaxially, wherein the polyolefin is based on 100 parts by weight thereof. The white metal oxide powder having a specific surface area of 1 to 10 m 2 / g contains 40 to 1000 parts by weight of a white conductive powder in which a coating layer made of tin oxide in solid solution of antimony is formed on the surface of the powder. It is characterized by
ここで、ポリオレフインとは、低密度ポリエチレン、高
密度ポリエチレン、エチレン−プロピレン共重合体、エ
チレン−ブテン−１共重合体等のエチレン系樹脂、ポリ
プロピレン、プロピレン−エチレン共重合体、プロピレ
ン−ブテン−１−エチレン共重合体等のプロピレン系樹
脂等をいう。Here, polyolefin means ethylene resin such as low density polyethylene, high density polyethylene, ethylene-propylene copolymer, ethylene-butene-1 copolymer, polypropylene, propylene-ethylene copolymer, propylene-butene-1. -Propylene resin such as ethylene copolymer.
また、白色導電性粉末とは、１〜10m2/gの比表面積を有
する酸化チタン、酸化珪素、酸化アルミニウム、酸化亜
鉛、酸化マグネシウム等の白色金属酸化物粉末の表面
に、好ましくは0.1〜30重量％、特に好ましくは１〜15
重量％のアンチモン固溶の酸化錫からなる被覆層が形成
されてなるものをいい、これらは、例えば、特開昭56−
41603号、同57−11825号、特公昭61−16126号、同61−3
9684号、同61−39685号、同61−39686号等各公報に開示
されている。Further, the white conductive powder, titanium oxide having a specific surface area of 1 to 10 m 2 / g, the surface of white metal oxide powder such as silicon oxide, aluminum oxide, zinc oxide, magnesium oxide, preferably 0.1 to 30. % By weight, particularly preferably 1-15
A coating layer formed of tin oxide with solid solution of antimony by weight% is formed, and these are described, for example, in JP-A-56-
No. 41603, No. 57-11825, Japanese Patent Publication No. 61-16126, No. 61-3
It is disclosed in various publications such as 9684, 61-39685, and 61-39686.
本発明において、ポリオレフインと白色導電性粉末の配
合割合は、ポリオレフイン100重量部に対して白色導電
性粉末40〜1000重量部、好ましくは60〜900重量部であ
る。白色導電性粉末が40重量部未満では延伸フイルムが
充分な導電性を示さないものとなり、また、1000重量部
超過では、ポリオレフインへの混合が困難になると共に
高延伸倍率のフイルムとはし得ないこととなる。In the present invention, the mixing ratio of the polyolefin and the white conductive powder is 40 to 1000 parts by weight, preferably 60 to 900 parts by weight, of the white conductive powder to 100 parts by weight of the polyolefin. If the amount of the white conductive powder is less than 40 parts by weight, the stretched film does not show sufficient conductivity, and if it exceeds 1000 parts by weight, it becomes difficult to mix it with polyolefin and it cannot be a film with a high stretch ratio. It will be.
本発明の導電性延伸ポリオレフインフイルムは、ポリオ
レフインと白色導電性粉末とを、必要に応じて分散剤、
可塑剤、カツプリング剤、安定剤、着色剤等をさらに添
加して、一軸あるいは二軸押出機、バンバリーミキサ
ー、ニーダー、ミキシングロール等によつて加熱混練し
た後、Ｔダイ成形、インフレーシヨン成形等の公知のフ
イルム成形法でフイルムとなし、次いで、該フイルムを
通常の延伸温度にて一軸あるいは二軸方向に延伸するこ
とにより得られる。The conductive stretched polyolefin film of the present invention is a polyolefin and a white conductive powder, if necessary, a dispersant,
Plasticizers, coupling agents, stabilizers, colorants, etc. are further added, and the mixture is heated and kneaded by a single-screw or twin-screw extruder, Banbury mixer, kneader, mixing roll, etc., then T-die molding, inflation molding, etc. It can be obtained by forming a film by the known film forming method of, and then stretching the film uniaxially or biaxially at a normal stretching temperature.
この延伸方法も、従来より公知の方法でよく、例えば、
一軸延伸ではフラツト状でのロール延伸、オーブン延
伸、およびチユーブ状延伸等、二軸延伸ではフラツト状
でのテンター延伸、チユーブ状でのインフレーシヨン延
伸、マンドレル延伸等がある。This stretching method may also be a conventionally known method, for example,
The uniaxial stretching includes flat-shaped roll stretching, oven stretching, tube-shaped stretching and the like, and the biaxial stretching includes flat-shaped tenter stretching, tube-shaped inflation stretching and mandrel stretching.
なお、本発明延伸フイルムの延伸倍率は、一軸方向に1.
5〜12倍程度、好ましくは２〜10倍程度であり、二軸方
向には、縦横の各方向にこの範囲の延伸倍率を採り得
る。The stretching ratio of the stretched film of the present invention is 1.
It is about 5 to 12 times, preferably about 2 to 10 times, and in the biaxial direction, a stretching ratio in this range can be taken in each of the longitudinal and transverse directions.
また、本発明延伸フイルムは、延伸後に熱セツトにより
リラツクスされていることが有効である。Further, it is effective that the stretched film of the present invention is relaxed by a heat set after stretching.
本発明の導電性延伸ポリオレフインフイルムは、その厚
みが0.2〜200μ、好ましくは１〜180μであり、表面固
有抵抗が102〜1012Ωを有するものである。The conductive stretched polyolefin film of the present invention has a thickness of 0.2 to 200 µ, preferably 1 to 180 µ, and a surface specific resistance of 10 2 to 10 12 Ω.
また、本発明延伸フイルムは、単層で、または他材料と
の積層状態で用いることができる。Further, the stretched film of the present invention can be used as a single layer or in a laminated state with other materials.
（ホ）作用および効果 本発明の導電性延伸ポリオレフインフイルムは、特定の
白色導電性粉末を用いてなるので、該導電性粉末が高濃
度に配合されているにも拘らず高延伸倍率を保持し、か
つ、延伸による導電性の急激な低下をなくし、結果とし
て導電性の優れるものとなるのである。(E) Action and effect Since the electroconductive stretched polyolefin film of the present invention comprises a specific white electroconductive powder, it retains a high draw ratio despite the fact that the electroconductive powder is blended in a high concentration. In addition, a sharp decrease in conductivity due to stretching is eliminated, resulting in excellent conductivity.
（ヘ）実施例 実施例１ ポリプロピレン（MFR2.3g/10分）100重量部と、３m2/g
の比表面積を有する酸化チタン粉末の表面に10重量％の
アンチモン固溶の酸化錫からなる被覆層が形成されてな
る白色導電性粉末（三菱金属株式会社製、導電性粉末
「Ｗ−１」）400重量部、および、分散剤（ステアリン
酸亜鉛）１重量部、熱安定剤（2,6−ジ−ｔ−ブチル−
ｐ−クレゾール）0.2重量部とを、スーパーミキサーで
２分間混合し、二軸押出機で溶融混練してペレツトとな
した後、Ｔダイを備えた押出機よりフイルム状に押出
し、冷却固化することにより厚み130μの未延伸フイル
ムを成形した。(F) Example Example 1 100 parts by weight of polypropylene (MFR 2.3 g / 10 minutes) and 3 m 2 / g
White conductive powder obtained by forming a coating layer made of 10% by weight of antimony solid solution tin oxide on the surface of a titanium oxide powder having a specific surface area of (1) (Mitsubishi Metal Co., Ltd., conductive powder "W-1"). 400 parts by weight, 1 part by weight of dispersant (zinc stearate), heat stabilizer (2,6-di-t-butyl-
0.2 parts by weight of p-cresol) is mixed with a supermixer for 2 minutes, melt-kneaded with a twin-screw extruder to form a pellet, and then extruded into a film from an extruder equipped with a T-die, and cooled and solidified. To form an unstretched film having a thickness of 130 μm.
この未延伸フイルムの表面固有抵抗は４×105Ωであつ
た。The surface resistivity of this unstretched film was 4 × 10 5 Ω.
しかる後、該未延伸フイルムを、ロール延伸法により、
延伸温度120℃、延伸倍率５倍で縦方向に延伸し、次い
で、温度120℃、リラツクス率８％で熱セツトすること
により、厚み25μの導電性一軸延伸ポリプロピレンフイ
ルムを製造した。After that, the unstretched film, by a roll stretching method,
A conductive uniaxially stretched polypropylene film having a thickness of 25 μm was manufactured by stretching in the machine direction at a stretching temperature of 120 ° C. and a stretching ratio of 5 times, and then heat-setting at a temperature of 120 ° C. and a relaxation rate of 8%.
得られたフイルムの表面固有抵抗は8.2×105Ωであつ
た。The surface resistivity of the obtained film was 8.2 × 10 5 Ω.
実施例２ ポリプロピレン（MFR2.3g/10分）を中間層とし、実施例
１におけると同じポリプロピレンと白色導電性粉末との
配合物ペレツトを両表面層として、Ｔダイより共押出し
し、冷却固化することにより厚み1.5mmの三層積層の未
延伸フイルムを成形した。Example 2 Polypropylene (MFR 2.3 g / 10 min) was used as an intermediate layer, and the same compound pellet of polypropylene and white conductive powder as in Example 1 was used as both surface layers, coextruded from a T die and cooled and solidified. As a result, a three-layer laminated unstretched film having a thickness of 1.5 mm was formed.
この未延伸フイルムの表面固有抵抗は５×105Ωであつ
た。The surface resistivity of this unstretched film was 5 × 10 5 Ω.
しかる後、該未延伸フイルムを、ロール延伸法により、
延伸温度120℃、延伸倍率５倍で縦方向に延伸し、次い
で、テンター延伸法により、延伸温度170℃、延伸倍率1
0倍で横方向に延伸し、さらに、テンター内で熱セツト
することにより、各層厚み５μ/20μ/5μの三層積層の
導電性二軸延伸ポリプロピレンフイルムを製造した。After that, the unstretched film, by a roll stretching method,
Stretching temperature is 120 ° C, stretching ratio is 5 times, and then stretching is carried out in the machine direction. Then, by tenter stretching method, stretching temperature is 170 ° C and stretching ratio is 1
The film was stretched in the transverse direction at a stretch ratio of 0 and further heat-set in a tenter to produce a conductive biaxially stretched polypropylene film having a three-layer laminate with a thickness of each layer of 5 μ / 20 μ / 5 μ.
得られたフイルムの表面固有抵抗は3.5×106Ωであつ
た。The surface resistivity of the obtained film was 3.5 × 10 6 Ω.
比較例１ 実施例１において用いた白色導電性粉末に代えて、カー
ボンブラツク（電気化学工業株式会社製、アセチレンブ
ラツク）を用いた外は、実施例１と同様にして未延伸フ
イルムの成形を試みたが、カーボンブラツクの分散が悪
くフイルムは成形できなかつた。Comparative Example 1 An unstretched film was formed in the same manner as in Example 1 except that a carbon black (acetylene black manufactured by Denki Kagaku Kogyo Co., Ltd.) was used instead of the white conductive powder used in Example 1. However, the dispersion of the carbon black was poor and the film could not be formed.
比較例２ 実施例１において、用いた白色導電性粉末に代えて比較
例１において用いたと同じカーボンブラツクを用い、そ
の配合量を30重量部とした外は、実施例１と同様にして
未延伸フイルムを成形し、次いで一軸延伸フイルムを製
造した。Comparative Example 2 The same procedure as in Example 1 was carried out except that the same carbon black as that used in Comparative Example 1 was used instead of the white conductive powder used in Example 1 and the blending amount was 30 parts by weight. The film was molded and then a uniaxially stretched film was produced.
未延伸フイルムの表面固有抵抗は2.0×100Ωであつた
が、一軸延伸フイルムのそれは4.0×1011Ωと低下して
いた。The surface resistivity of the unstretched film was 2.0 × 10 0 Ω, but that of the uniaxially stretched film was as low as 4.0 × 10 11 Ω.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｂ２９Ｋ 23:00 Ｂ２９Ｌ 7:00 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location // B29K 23:00 B29L 7:00
Claims (1)
インフイルムであつて、該ポリオレフインがその100重
量部に対して、１〜10m2/gの比表面積を有する白色金属
酸化物粉末の表面にアンチモン固溶の酸化錫からなる被
覆層が形成されてなる白色導電性粉末を40〜1000重量部
含有していることを特徴とする導電性延伸ポリオレフイ
ンフイルム。1. A polyolefin film stretched at least uniaxially, wherein the polyolefin film has a specific surface area of 1 to 10 m 2 / g of antimony on the surface of 100 parts by weight of the polyolefin film. A conductive stretched polyolefin film, which contains 40 to 1000 parts by weight of a white conductive powder having a coating layer made of solid solution tin oxide formed thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62100826A JPH0791398B2 (en) | 1987-04-23 | 1987-04-23 | Conductive stretched polyolefin film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62100826A JPH0791398B2 (en) | 1987-04-23 | 1987-04-23 | Conductive stretched polyolefin film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63265930A JPS63265930A (en) | 1988-11-02 |
| JPH0791398B2 true JPH0791398B2 (en) | 1995-10-04 |
Family
ID=14284129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62100826A Expired - Lifetime JPH0791398B2 (en) | 1987-04-23 | 1987-04-23 | Conductive stretched polyolefin film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0791398B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE150203T1 (en) * | 1988-09-16 | 1997-03-15 | Du Pont | ELECTRICALLY CONDUCTIVE MIXTURE AND PRODUCTION PROCESS |
| USH1447H (en) * | 1992-11-20 | 1995-06-06 | E. I. Du Pont De Nemours And Company | Coated silica shells |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5839175B2 (en) * | 1977-01-26 | 1983-08-27 | ユニチカ株式会社 | Antistatic synthetic polymer composition |
| JPS6021553B2 (en) * | 1979-09-14 | 1985-05-28 | 三菱マテリアル株式会社 | White conductive coated powder and its manufacturing method |
| JPS56114215A (en) * | 1980-02-13 | 1981-09-08 | Mitsubishi Metal Corp | White conductive composite powder and method of manufacturing same |
| JPS59122525A (en) * | 1982-12-28 | 1984-07-16 | Takiron Co Ltd | Antistatic plastic sheet or film |
| JPS6020942A (en) * | 1983-07-14 | 1985-02-02 | Sanwa Kako Kk | Production of electrically conductive crosslinked polyolefin foam |
-
1987
- 1987-04-23 JP JP62100826A patent/JPH0791398B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63265930A (en) | 1988-11-02 |
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