JPS63154006A - Method of removing fire-spread-proof covering of wire and cable - Google Patents
Method of removing fire-spread-proof covering of wire and cableInfo
- Publication number
- JPS63154006A JPS63154006A JP61297279A JP29727986A JPS63154006A JP S63154006 A JPS63154006 A JP S63154006A JP 61297279 A JP61297279 A JP 61297279A JP 29727986 A JP29727986 A JP 29727986A JP S63154006 A JPS63154006 A JP S63154006A
- Authority
- JP
- Japan
- Prior art keywords
- fire spread
- spread prevention
- cable
- prevention coating
- cables
- 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
- 238000000034 method Methods 0.000 title claims description 12
- 230000002265 prevention Effects 0.000 claims description 28
- 238000000576 coating method Methods 0.000 claims description 24
- 239000011248 coating agent Substances 0.000 claims description 23
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000003973 paint Substances 0.000 description 7
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 7
- 229920002554 vinyl polymer Polymers 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- VXQBJTKSVGFQOL-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethyl acetate Chemical compound CCCCOCCOCCOC(C)=O VXQBJTKSVGFQOL-UHFFFAOYSA-N 0.000 description 2
- FPZWZCWUIYYYBU-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl acetate Chemical compound CCOCCOCCOC(C)=O FPZWZCWUIYYYBU-UHFFFAOYSA-N 0.000 description 2
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical class CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- XLLIQLLCWZCATF-UHFFFAOYSA-N ethylene glycol monomethyl ether acetate Natural products COCCOC(C)=O XLLIQLLCWZCATF-UHFFFAOYSA-N 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 239000004114 Ammonium polyphosphate Substances 0.000 description 1
- 229920006282 Phenolic fiber Polymers 0.000 description 1
- -1 Polyethylene Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 1
- 229920001276 ammonium polyphosphate Polymers 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 150000004074 biphenyls Chemical class 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- HQUQLFOMPYWACS-UHFFFAOYSA-N tris(2-chloroethyl) phosphate Chemical compound ClCCOP(=O)(OCCCl)OCCCl HQUQLFOMPYWACS-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- ZPEJZWGMHAKWNL-UHFFFAOYSA-L zinc;oxalate Chemical compound [Zn+2].[O-]C(=O)C([O-])=O ZPEJZWGMHAKWNL-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、電線・ケーブル外周に設けられた延焼防止被
覆を効率的に剥離する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for efficiently peeling off a fire spread prevention coating provided on the outer periphery of an electric wire or cable.
［従来の技術］
電線・ケーブルの延焼を防止するための一方法として、
シース外周に延焼防止塗料を塗布し、乾燥させて延焼防
止被覆を形成する方法が採用されてきている。延焼防止
塗料は、一般に、水性エマルジョンをベースに有機難燃
剤、無機充填剤、不燃性繊維、可塑剤等を加えたもので
あり、これらの延焼防止塗料を電線・ケーブルのシース
外周に塗布し乾燥すると、シースと接着した延焼防止被
覆が形成される。電線・ケーブルのシースとしては、ポ
リエチレン、ビニル、クロロブレンゴム、シリコーンゴ
ム等が用いられているが、特にビニルシースと延焼防止
塗料とは良く接着する。このため、電線・ケーブルを撤
去する場合に延焼防止被覆を剥離する作業が困難になっ
ている。[Prior art] As a method to prevent the spread of fire in electric wires and cables,
A method has been adopted in which a fire spread prevention coating is applied to the outer periphery of the sheath and dried to form a fire spread prevention coating. Fire spread prevention paint is generally a water-based emulsion with organic flame retardants, inorganic fillers, noncombustible fibers, plasticizers, etc. added, and these fire spread prevention paints are applied to the outer periphery of the sheath of electric wires and cables and allowed to dry. Then, a fire spread prevention coating is formed that is bonded to the sheath. Polyethylene, vinyl, chloroprene rubber, silicone rubber, etc. are used as sheaths for electric wires and cables, and vinyl sheaths and fire spread prevention paints particularly adhere well. This makes it difficult to remove the fire spread prevention coating when removing electric wires and cables.
一般に、延焼防止被覆を剥離する方法としては、アルカ
リ性水溶液を用いる方法、あるいはジクロロメタンを主
材料とした剥離液を用いる方法がある。Generally, methods for removing the fire spread prevention coating include a method using an alkaline aqueous solution or a method using a stripping liquid mainly composed of dichloromethane.
［発明が解決しようとする問題点］
しかし、アルカリ性水溶液を用いる方法は剥離効果が殆
どない。また、ジクロロメタンを主材料とした剥離液を
用いる方法は延焼防止被覆を膨潤させると共に、ケーブ
ルシースをも膨潤させるという問題がある。すなわち、
電線・ケーブルは複数本がグループとなって布設され、
これらを一括して延焼防止被覆が設けられるが、グルー
プの中の一部の電線・ケーブルのみの撤去および張替え
の場合、全体の延焼防止被覆を剥離してから撤去および
張替えが行われ、再度、延焼防止被覆が設けられること
になる。このように、延焼防止塗料の剥離に際しては、
撤去する電線・ケーブルのみならず、その後も更に使用
される電線・ケーブルにも剥離液の影響が及ぶことにな
るので、電線・ケーブルシースを膨潤させない剥離液が
望まれる。[Problems to be Solved by the Invention] However, the method using an alkaline aqueous solution has almost no peeling effect. Further, the method using a stripping liquid mainly composed of dichloromethane has the problem that it swells the fire spread prevention coating and also swells the cable sheath. That is,
Multiple wires and cables are laid in groups,
A fire spread prevention coating is provided for all of these, but if only some of the wires/cables in a group are to be removed and replaced, the entire fire spread prevention coating must be removed before removal and replacement. A coating to prevent the spread of fire will be provided. In this way, when removing the fire spread prevention paint,
Since the stripping liquid will have an effect not only on the electric wires and cables to be removed, but also on the electric wires and cables that will be used afterward, a stripping liquid that does not swell the electric wires and cable sheaths is desired.
また、揮発性が少な（、毒性のないものが好ましく、更
に作業の安全性から考えて常温で剥離作業が可能である
ものが望まれる。In addition, it is preferable to use a material with low volatility (non-toxicity), and from the viewpoint of work safety, a material that can be removed at room temperature is desirable.
本発明は、上記に基いてなされたもので、剥離性、安全
性に優れ、しかも電線・ケーブルシースに悪影響を与え
ずに常温での剥離が可能である電線・ケーブル延焼防止
被覆の剥離方法の提供を目的とするものである。The present invention has been made based on the above, and provides a method for stripping fire spread prevention coatings of electric wires and cables, which has excellent peelability and safety, and can be peeled off at room temperature without adversely affecting the wires and cable sheaths. It is intended for the purpose of providing.
本発明の剥離方法は、電線・ケーブル上に設けられた延
焼防止被覆にアルキルグリコールエーテルアセテートを
浸透させ、しかる後延焼防止被覆を剥離することを特徴
とするものである。The peeling method of the present invention is characterized in that alkyl glycol ether acetate is infiltrated into a fire spread prevention coating provided on an electric wire or cable, and then the fire spread prevention coating is peeled off.
本発明が適用される延焼防止被覆を形成する塗料として
は、水性エマルジョンをベースに有機難燃剤、難燃助剤
、無機充填剤、不燃性繊維、可塑剤等を加えたものが代
表例としてあげられる。水性エマルジョンとしては、酢
酸ビニル系エマルジョン、アクリル系エマルジョンなど
が、有機難燃剤としては、塩素化パラフィン、塩素化ナ
フタリン、デカブロモジフェニルオキサイド、ポリりん
酸アンモニウムなどが、難燃助剤としては、三酸化アン
チモン、はう酸亜鉛などが、無機充填剤としては水和ア
ルミナ、炭酸カルシウム、含水ケイ酸マグネシウム、ク
レー、チタン白、タルクなどが、不燃性繊維としては、
セラミック繊維、フェノール繊維、ガラス繊維などが、
可塑剤としては、トリス（β−クロロエチル）ホスフェ
ート、塩素化ビフェニル、フタル酸ジブチルなどがそれ
ぞれあげられる。Typical examples of paints that form the fire spread prevention coating to which the present invention is applied include those based on aqueous emulsions with organic flame retardants, flame retardant aids, inorganic fillers, nonflammable fibers, plasticizers, etc. It will be done. Examples of aqueous emulsions include vinyl acetate emulsions and acrylic emulsions; examples of organic flame retardants include chlorinated paraffin, chlorinated naphthalene, decabromodiphenyl oxide, and ammonium polyphosphate; examples of flame retardant aids include Antimony oxide, zinc oxalate, etc. are used as inorganic fillers, hydrated alumina, calcium carbonate, hydrated magnesium silicate, clay, titanium white, talc, etc. are used as non-combustible fibers.
Ceramic fibers, phenolic fibers, glass fibers, etc.
Examples of plasticizers include tris(β-chloroethyl) phosphate, chlorinated biphenyls, and dibutyl phthalate.
アルキルグリコールエーテルアセテートは延焼防止被覆
を膨潤させる剥離液として機能するものであり、そのま
ま、あるいは他の材料と混合して延焼防止被覆外周に塗
布することにより浸透させることができる。アルキルグ
リコールエーテルアセテートの具体例としては、エチレ
ングリコールモノメチルエーテルアセテート、エチレン
グリコールモノエチルエーテルアセテート、ジエチレン
グリコールモノエチルエーテルアセテート、ジエチレン
グリコールモノブチルエーテルアセテート等があげられ
る。これらはいずれも揮発性、毒性が殆どなく、しかも
電線・ケーブルシースに悪影響を及ぼさずに室温での剥
離効果を有する。The alkyl glycol ether acetate functions as a stripping liquid that swells the fire spread prevention coating, and can be applied as it is or mixed with other materials and applied to the outer periphery of the fire spread prevention coating to cause penetration. Specific examples of alkyl glycol ether acetate include ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, and the like. All of these have almost no volatility or toxicity, and have a peeling effect at room temperature without adversely affecting the wire/cable sheath.
［発明の実施例］
第１表に示すように２種類の延焼防止塗料Ａ、Ｂを調整
し、これをビニルシースケーブル（外径ｔｚｍｍ）外周
に乾燥後の厚さが１．５ｍｍとなるように塗布し、塗布
後室部で１２０時間乾燥して延焼防止被覆とした。この
ケーブルを第２表に示すような剥離液ａ〜ｄ中に浸漬し
、延焼防止被覆とビニルシースとの剥離状況およびビニ
ルシース特性について評価した。[Example of the Invention] As shown in Table 1, two types of fire spread prevention paints A and B were prepared and applied to the outer circumference of a vinyl sheathed cable (outer diameter tz mm) so that the thickness after drying was 1.5 mm. After coating, it was dried in a chamber for 120 hours to form a fire spread prevention coating. This cable was immersed in stripping solutions a to d as shown in Table 2, and the peeling status between the fire spread prevention coating and the vinyl sheath and the properties of the vinyl sheath were evaluated.
この結果を第２表に示した。The results are shown in Table 2.
第１表 延焼防止塗料配合
第２表から明らかな通り、エチレングリコールモノエチ
ルエーテルアセテートの場合は８時間、ジエチレングリ
コールモノエチルエーテルアセテートの場合は２２時間
、ジエチレングリコールモノブチルエーテルアセテート
の場合は２４時間浸漬すれば容易に剥離を行えることに
なる。このように剥離までの時間が異るのは、剥離液の
延焼防止被覆への浸透性が異るためで、一般に分子量の
低いもの程浸透速度が早（、剥離効果に優れることにな
る。Table 1 Fire spread prevention paint formulation As is clear from Table 2, 8 hours in the case of ethylene glycol monoethyl ether acetate, 22 hours in the case of diethylene glycol monoethyl ether acetate, and 24 hours in the case of diethylene glycol monobutyl ether acetate. Peeling can be easily performed. The reason for this difference in time to peeling is due to the difference in the permeability of the peeling liquid to the fire spread prevention coating, and generally speaking, the lower the molecular weight, the faster the permeation rate (and the better the peeling effect).
また、本発明の範囲にある剥離液を使用した場合（実施
例１〜６）は、ビニルシースへの影響は殆どなく、引張
強さおよび伸びの低下は極めて少ない。これに対し、ジ
クロロメタンを使用した場合（比較例）、剥離は容易に
行えるがビニルシースを膨潤軟化させることから、引張
強さは大幅に低下し、逆に伸びが太き（なる。Further, when a stripping solution within the scope of the present invention is used (Examples 1 to 6), there is almost no effect on the vinyl sheath, and the decrease in tensile strength and elongation is extremely small. On the other hand, when dichloromethane is used (comparative example), peeling is easy, but since it swells and softens the vinyl sheath, the tensile strength decreases significantly and the elongation increases.
［発明の効果］
以上説明してきた通り、本発明によれば、ケーブルシー
スに悪影響を与えることなく延焼防止被覆の剥離を容易
に行うことが可能となる。[Effects of the Invention] As explained above, according to the present invention, it is possible to easily remove the fire spread prevention coating without adversely affecting the cable sheath.
また、本発明で使用する剥離液は、室温で十分な剥離効
果を有すると共に、揮発性、毒性が殆どなく安全性に優
れたものである。Further, the stripping solution used in the present invention has a sufficient stripping effect at room temperature, has little volatility and toxicity, and is excellent in safety.
Claims (1)
ルキルグリコールエーテルアセテートを浸透させ、しか
る後延焼防止被覆を剥離することを特徴とする電線・ケ
ーブル延焼防止被覆の剥離方法。(1) A method for removing a fire spread prevention coating for electric wires and cables, which comprises impregnating alkyl glycol ether acetate into a fire spread prevention coating provided on electric wires and cables, and then peeling off the fire spread prevention coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61297279A JPH0669254B2 (en) | 1986-12-12 | 1986-12-12 | Peeling method for wire / cable spread prevention coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61297279A JPH0669254B2 (en) | 1986-12-12 | 1986-12-12 | Peeling method for wire / cable spread prevention coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63154006A true JPS63154006A (en) | 1988-06-27 |
| JPH0669254B2 JPH0669254B2 (en) | 1994-08-31 |
Family
ID=17844464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61297279A Expired - Lifetime JPH0669254B2 (en) | 1986-12-12 | 1986-12-12 | Peeling method for wire / cable spread prevention coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0669254B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01286711A (en) * | 1988-05-10 | 1989-11-17 | Hitachi Cable Ltd | Fire spread preventive coating peeling agent and method of peeling wire/cable fire spread preventive coating |
| JPH03265409A (en) * | 1990-03-14 | 1991-11-26 | Hitachi Cable Ltd | Method for removing exposure fire preventive coating of electric wire and cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51128194A (en) * | 1975-04-30 | 1976-11-08 | Sumitomo Electric Ind Ltd | Fire protection composition |
| JPS5383398A (en) * | 1976-12-28 | 1978-07-22 | Sumitomo Electric Ind Ltd | Composition for preventing fire from spreading |
| JPS53126036A (en) * | 1977-04-12 | 1978-11-02 | Kouichi Takamura | Stripping agent for automobile enamel paint |
| JPS5473498A (en) * | 1977-11-22 | 1979-06-12 | Hitachi Cable Ltd | Fire-preventing substance, and penetrated wall part and electric wire or cable made from said substance |
| JPS6157665A (en) * | 1984-07-24 | 1986-03-24 | Chuo Kagaku Kk | Paint peeling agent |
-
1986
- 1986-12-12 JP JP61297279A patent/JPH0669254B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51128194A (en) * | 1975-04-30 | 1976-11-08 | Sumitomo Electric Ind Ltd | Fire protection composition |
| JPS5383398A (en) * | 1976-12-28 | 1978-07-22 | Sumitomo Electric Ind Ltd | Composition for preventing fire from spreading |
| JPS53126036A (en) * | 1977-04-12 | 1978-11-02 | Kouichi Takamura | Stripping agent for automobile enamel paint |
| JPS5473498A (en) * | 1977-11-22 | 1979-06-12 | Hitachi Cable Ltd | Fire-preventing substance, and penetrated wall part and electric wire or cable made from said substance |
| JPS6157665A (en) * | 1984-07-24 | 1986-03-24 | Chuo Kagaku Kk | Paint peeling agent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01286711A (en) * | 1988-05-10 | 1989-11-17 | Hitachi Cable Ltd | Fire spread preventive coating peeling agent and method of peeling wire/cable fire spread preventive coating |
| JPH03265409A (en) * | 1990-03-14 | 1991-11-26 | Hitachi Cable Ltd | Method for removing exposure fire preventive coating of electric wire and cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0669254B2 (en) | 1994-08-31 |
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