JPH09282950A - Termite preventing cable - Google Patents

Termite preventing cable

Info

Publication number
JPH09282950A
JPH09282950A JP8115351A JP11535196A JPH09282950A JP H09282950 A JPH09282950 A JP H09282950A JP 8115351 A JP8115351 A JP 8115351A JP 11535196 A JP11535196 A JP 11535196A JP H09282950 A JPH09282950 A JP H09282950A
Authority
JP
Japan
Prior art keywords
resin
termite
cable
coating layer
polyacetal
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
Application number
JP8115351A
Other languages
Japanese (ja)
Inventor
Masumi Tanikita
真澄 谷北
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polyplastics Co Ltd
Original Assignee
Polyplastics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Polyplastics Co Ltd filed Critical Polyplastics Co Ltd
Priority to JP8115351A priority Critical patent/JPH09282950A/en
Priority to PCT/JP1997/001271 priority patent/WO1997039459A1/en
Priority to AU25219/97A priority patent/AU727646B2/en
Publication of JPH09282950A publication Critical patent/JPH09282950A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806—Protection against damage caused by corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
    • H01B3/428—Polyacetals

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulated Conductors (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PROBLEM TO BE SOLVED: To effectively avoid an insect damage by a termite and improve manufacturing workability so as to enhance economy by covering an outermost layer of a cable with a protecting coating layer made of a polyacetal resin. SOLUTION: An ant preventing cable 7 is formed by twisting together a plurality of insulating wire cores 3, each having a conductor 1 made of aluminum, copper or the like covered with an insulating layer 2 made of a polyethylene resin, a crosslinking polyethylene resin, a polyvinylchloride resin. A sheath layer 5 is wound around a twisted strand 4 covered with a sheet or tape made of a synthetic resin under pressure, if necessary. Furthermore, the sheath layer 5 is covered with a protecting coating layer 6 made of a polyacetal resin. Consequently, it is expected to maintain stable ant preventing performance, which can be satisfactory, and extruding machinability can be prevented from being degraded. Moreover, since it is unnecessary to especially add a termite preventing agent, economy can be enhanced.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、ケーブルの最外層
にポリアセタール系樹脂製保護被覆層を設けることによ
り、ポリアセタール系樹脂の有する優れた性状によりシ
ロアリの被害を防止した防蟻ケーブルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a termite-proof cable in which a protective coating layer made of a polyacetal resin is provided on the outermost layer of the cable to prevent termite damage due to the excellent properties of the polyacetal resin.

【０００２】[0002]

【従来の技術】小動物による電線またはケーブル類（以
下、本発明では両者を総称して「ケーブル」とする）の
被害は数多く報告されているが、被害例の最も多いもの
は、シロアリによる食害である。近年、情報・エネルギ
ー伝送の高密度化の中で、ケーブルの役割は年々重要と
なっている。従って、小動物による被害防止も重要性が
増している。しかし、ケーブルの被覆に一般的に使用さ
れている材料の大半はポリ塩化ビニル樹脂（ＰＶＣとも
略す）、ポリエチレン樹脂等の汎用樹脂であり、これら
はシロアリの食害を避けることは難しい。近年、ケーブ
ルの防蟻対策として、強靱な樹脂であるナイロン１２を
最外層に施して物理的対策をとることが主流となってい
る。また化学的対策として、一般被覆用のポリ塩化ビニ
ル樹脂に防蟻剤を添加することも一部用いられている。2. Description of the Related Art Although many damages to electric wires or cables (hereinafter, both are collectively referred to as "cable" in the present invention) by small animals have been reported, the most common damage is due to feeding damage by termites. is there. In recent years, the role of cables has become more important year by year in the densification of information and energy transmission. Therefore, prevention of damage by small animals is becoming more important. However, most of the materials generally used for coating the cables are general-purpose resins such as polyvinyl chloride resin (also abbreviated as PVC) and polyethylene resin, and it is difficult to avoid feeding damage by termites. In recent years, as a cable ant preventive measure, it has become mainstream to take nylon 12 which is a tough resin as the outermost layer to take a physical measure. Further, as a chemical measure, addition of an anti-termite agent to polyvinyl chloride resin for general coating is also partially used.

【０００３】[0003]

【発明が解決しようとする課題】しかし、前記物理的対
策ではナイロン１２の保護被覆層の厚さを０．７ｍｍ以
上確保しないと十分な防蟻効果が得られず、従ってケー
ブルの柔軟性が損なわれていた。さらに材料価格が高い
上、押出加工性が悪く、加工スピードを上げられないた
め、製品であるケーブルの価格が高くなるという経済性
の点でも問題があった。However, in the physical measures described above, a sufficient termite-proof effect cannot be obtained unless the thickness of the protective coating layer of nylon 12 is 0.7 mm or more, and thus the flexibility of the cable is impaired. It was Furthermore, since the material cost is high, the extrusion processability is poor, and the processing speed cannot be increased, there is also a problem in terms of economy that the price of the cable, which is a product, becomes high.

【０００４】また化学的対策では、充分な防蟻効果と長
期安定性を共に満足できず、現在も有効な薬剤の研究開
発が行われているのが実情である。In addition, chemical countermeasures cannot satisfy both a sufficient termite control effect and long-term stability, and the fact is that effective drug research and development is still being conducted.

【０００５】[0005]

【課題を解決するための手段】本発明者は、ケーブルの
防蟻技術の現状に鑑み鋭意検討した結果、ケーブルの最
外層にポリアセタール系樹脂製保護被覆層を設けること
により、上記防蟻技術の問題を解決し、シロアリによる
食害を有効に回避し、かつ製造作業効率を向上させ、経
済合理性を有する防蟻ケーブルが得られることを見い出
し、本発明を完成するに至った。Means for Solving the Problems The present inventor has made earnest studies in view of the current state of cable termite control technology, and as a result, by providing a polyacetal resin protective coating layer on the outermost layer of the cable, The present invention has been completed by solving the problems, effectively avoiding feeding damage by termites, improving manufacturing work efficiency, and obtaining an economically rational termite-proof cable.

【０００６】すなわち本発明によれば、ケーブルの最外
層にポリアセタール系樹脂製保護被覆層を設けたことを
特徴とする防蟻ケーブルが提供される。また本発明によ
れば、ポリアセタール系樹脂がポリアセタール樹脂（Ｐ
ＯＭとも略す）からなるか、あるいはポリアセタール樹
脂を主体とする他の樹脂との組成物からなることを特徴
とする前記防蟻ケーブルが提供される。また本発明によ
れば、前記ポリアセタール樹脂を主体とする組成物がポ
リアセタール樹脂と熱可塑性ポリウレタン樹脂及び／ま
たはコアシェルポリマーからなることを特徴とする前記
防蟻ケーブルが提供される。また本発明によれば、ポリ
アセタール系樹脂製保護被覆層とその内層に位置するポ
リ塩化ビニル樹脂被覆層が相接触して被覆層を形成して
いることを特徴とする前記防蟻ケーブルが提供される。
さらに本発明によれば、ポリアセタール系樹脂製保護被
覆層の表面ビッカース硬度が２．５以上であることを特
徴とする前記防蟻ケーブルが提供される。That is, according to the present invention, there is provided an anti-termite cable characterized in that a protective coating layer made of polyacetal resin is provided on the outermost layer of the cable. According to the present invention, the polyacetal resin is a polyacetal resin (P
The above termite-proof cable is provided, which is characterized in that it is made of OM) or a composition with another resin mainly composed of a polyacetal resin. Further, according to the present invention, there is provided the above termite-proof cable, wherein the composition mainly composed of the polyacetal resin comprises a polyacetal resin, a thermoplastic polyurethane resin and / or a core shell polymer. Further, according to the present invention, there is provided the above termite-proof cable, characterized in that the protective coating layer made of a polyacetal resin and the polyvinyl chloride resin coating layer located in the inner layer are in contact with each other to form a coating layer. It
Further, according to the present invention, there is provided the above-mentioned dovetail cable, wherein the protective coating layer made of polyacetal resin has a surface Vickers hardness of 2.5 or more.

【０００７】[0007]

【発明の実施の形態】本発明のケーブルとは前記のよう
に電線を含み、光、電気を通すものであり、それを構成
する材質および形状は何れでもよく、例えば光ケーブル
用のグラスファイバー、電気・電話回線用の各種金属線
等に本発明を応用することができる。BEST MODE FOR CARRYING OUT THE INVENTION The cable of the present invention includes an electric wire as described above and allows light and electricity to pass therethrough. The material and shape of the cable may be any, for example, glass fiber for optical cable, electric The present invention can be applied to various metal wires for telephone lines.

【０００８】本発明によるケーブルの一例を図１に示
す。図１において、防蟻ケーブル７は、アルミニウム、
銅等からなる導体１の上にポリエチレン樹脂、架橋ポリ
エチレン樹脂、ポリ塩化ビニル樹脂からなる絶縁層２が
設けられた絶縁線芯３が複数本（この例では２本）が互
いに撚り合わされ、この撚り合わされた撚線４の外側に
必要により合成樹脂製のシートまたはテープで押さえ巻
きした上に、シース層５を形成し、さらにその上（外
側）にポリアセタール系樹脂製保護被覆層６を設けて構
成されるものである。An example of a cable according to the present invention is shown in FIG. In FIG. 1, the termite-proof cable 7 is made of aluminum,
A plurality of insulating wire cores 3 (two in this example), in which an insulating layer 2 made of polyethylene resin, cross-linked polyethylene resin, or polyvinyl chloride resin is provided on a conductor 1 made of copper or the like, are twisted together and If necessary, a sheath layer 5 is formed on the outer side of the combined twisted wire 4 with a synthetic resin sheet or tape, and a sheath layer 5 is formed on the outer side of the twisted wire 4. It is what is done.

【０００９】ここで「ポリアセタール系樹脂」とは、ポ
リアセタール樹脂を指す場合のほか、ポリアセタール樹
脂を主体（５０重量％以上）としポリアセタール樹脂に
配合しうる配合剤との組成物、の両者を指す。The term "polyacetal resin" as used herein refers to both a polyacetal resin and a composition containing a polyacetal resin as a main component ( 50% by weight or more ) and a compounding agent which can be mixed with the polyacetal resin.

【００１０】上記ポリアセタール樹脂としては、オキシ
メチレン基（−ＣＨ2Ｏ−）を主たる（５０モル％以
上）構成単位とする高分子化合物であればよく、ポリオ
キシメチレンホモポリマー、オキシメチレン基以外に他
のオキシメチレン基と共重合しうる構成単位を含有する
コポリマー、ターポリマー、ブロックポリマーのいずれ
も使用することができる。また分子が線状のみならず分
岐、架橋構造を有するものであってもよい。また、ポリ
アセタール樹脂を主体とする上記組成物としては、他の
樹脂をいわゆる島構造もしくは網目構造として含む組成
物である。ポリアセタール樹脂に配合する他の樹脂の種
類には特に制限がなく、熱可塑性ポリウレタン樹脂、コ
アシェルポリマー、ポリエステルエラストマー、ポリア
ミドエラストマー、ＡＢＳ樹脂などのアクリル系樹脂、
エチレン−酢酸ビニル共重合体、ポリ酢酸ビニル樹脂、
α−オレフィンとα，β−不飽和酸のグリシジルエステ
ルとの共重合体等のオレフィン系樹脂、塩化ビニル樹
脂、ポリエチレンテレフタレート樹脂、ポリブチレンテ
レフタレート樹脂、ポリカーボネート樹脂、ポリフェニ
レンエーテル樹脂、ポリフェニレンスルフィド樹脂等を
使用することができ、特には熱可塑性ポリウレタン樹脂
及び／またはコアシェルポリマーが好ましい。The polyacetal resin mainly contains an oxymethylene group (—CH 2 O—) ( 50 mol% or less ).
Top ) Any polymer compound as a constitutional unit may be used, and any of a polyoxymethylene homopolymer, a copolymer containing a constitutional unit which can be copolymerized with other oxymethylene groups in addition to an oxymethylene group, a terpolymer, and a block polymer. Can be used. The molecule may have not only a linear structure but also a branched or crosslinked structure. The above-mentioned composition containing a polyacetal resin as a main component is a composition containing another resin in a so-called island structure or network structure. There is no particular limitation on the type of other resin to be mixed with the polyacetal resin, and an acrylic resin such as a thermoplastic polyurethane resin, a core shell polymer, a polyester elastomer, a polyamide elastomer, or an ABS resin,
Ethylene-vinyl acetate copolymer, polyvinyl acetate resin,
Olefin resins such as copolymers of α-olefin and glycidyl ester of α, β-unsaturated acid, vinyl chloride resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polycarbonate resin, polyphenylene ether resin, polyphenylene sulfide resin, etc. A thermoplastic polyurethane resin and / or a core-shell polymer is particularly preferable.

【００１１】ここに、コアシェルポリマー（コアシェル
樹脂ともいう）とは、ゴム状ポリマーのコアとガラス状
ポリマーのシェルを有する有機化合物であり、公知の方
法により調製することもできるし、市販品を用いること
もできる。コアシェルポリマーは、多段階乳化重合法に
より、コアとなるゴム状ポリマーを後の重合段階で生成
するポリマーが順次被覆し、シェルを形成することによ
り得られる。ゴム状ポリマーのコアとしては、例えば共
役ジエンまたはアルキルアクリレートあるいはこれらの
混合物を重合させたものを挙げることができる。またそ
の重合には、共重合可能なモノマーを共重合させること
もできる。シェルを形成するガラス状ポリマーとして
は、メチルメタクリレート単独もしくはメチルメタクリ
レートと共重合可能なモノマーとの混合物を共重合させ
たものを挙げることができる。そして、ゴム状ポリマー
のコアとガラス状ポリマーのシェルの間には、中間層が
存在してもよい。The core-shell polymer (also referred to as core-shell resin) is an organic compound having a rubber-like polymer core and a glass-like polymer shell, which can be prepared by a known method, or a commercially available product is used. You can also The core-shell polymer is obtained by sequentially coating a rubber-like polymer to be a core with a polymer produced in a subsequent polymerization step by a multi-step emulsion polymerization method to form a shell. Examples of the rubber-like polymer core include polymerized conjugated diene or alkyl acrylate, or a mixture thereof. Further, in the polymerization, a copolymerizable monomer can be copolymerized. Examples of the glass-like polymer forming the shell include those obtained by copolymerizing methyl methacrylate alone or a mixture of methyl methacrylate and a copolymerizable monomer. Then, an intermediate layer may be present between the rubbery polymer core and the glassy polymer shell.

【００１２】なお、前記ポリアセタール系樹脂には、本
発明の効果を阻害しない範囲で、アンチブロッキング
剤、酸化防止剤、紫外線吸収剤等の各種安定剤、帯電防
止剤、難燃剤、難燃助剤、染料や顔料等の着色剤、潤滑
剤、可塑剤および結晶化促進剤、結晶核剤、離型剤、充
填剤等が配合されていてもよい。The polyacetal-based resin contains various stabilizers such as anti-blocking agents, antioxidants, and ultraviolet absorbers, antistatic agents, flame retardants, and flame retardant auxiliaries as long as the effects of the present invention are not impaired. Further, colorants such as dyes and pigments, lubricants, plasticizers and crystallization accelerators, crystal nucleating agents, release agents, fillers and the like may be added.

【００１３】本発明に使用する前記ポリアセタール系樹
脂としては、シロアリの食害効果が高い点で表面硬度の
高いものが好ましく、表面ビッカース硬度で２．５以上
ものが好ましく、さらには３．５以上のものが好まし
く、特に３．５〜１５のものが好ましい。As the polyacetal resin used in the present invention, those having a high surface hardness are preferable in terms of a high termite-damaging effect, and those having a surface Vickers hardness of 2.5 or more are preferable, and 3.5 or more are more preferable. Those having 3.5 to 15 are particularly preferable.

【００１４】ポリアセタール系樹脂製保護被覆層６の厚
みは、防蟻ケーブルに要求される防蟻性が充分に得ら
れ、かつ屈曲特性が損なわれず、更に経済性を勘案して
決められるが、具体例としては０．１ｍｍ以上であれば
よく、好ましくは０．２〜０．７ｍｍの範囲である。ポ
リアセタール系樹脂製保護被覆層の厚みが０．１ｍｍ未
満の場合は充分な防蟻性が得られないことがあり、かつ
ケーブルを屈曲させた際にその屈曲部分が座屈し易くな
る等の不都合が生じる場合がある。また０．７ｍｍを越
えると、厚すぎて柔軟性が得られない場合があり、かつ
不経済でもある。The thickness of the protective coating layer 6 made of a polyacetal resin is determined in consideration of the economical efficiency, since the termite-proof property required for the termite-proof cable can be sufficiently obtained, and the bending property is not impaired. For example, it may be 0.1 mm or more, preferably 0.2 to 0.7 mm. If the thickness of the protective coating layer made of polyacetal resin is less than 0.1 mm, sufficient anti-termite property may not be obtained, and when the cable is bent, the bent portion may be easily buckled. May occur. If it exceeds 0.7 mm, it may be too thick to obtain flexibility, and it is uneconomical.

【００１５】ポリアセタール系樹脂製保護被覆層の形成
は、絶縁層２上に通常の押出被覆によって所定の厚みに
ポリアセタール系樹脂を被覆する方法と、絶縁層２を押
し出す際に同時にポリアセタール系樹脂を押し出し、積
層する方法もある。経済性を考慮すると、後者の同時押
出（共押出）方法が好ましい。また、より高度な防蟻性
能が要求される場合は、ポリアセタール系樹脂に、２．
５重量％以下のドリン系、有機リン系等の防蟻剤を添加
することもできるが、添加量はなるべく少量とし、防蟻
剤の流出、押出加工性および電気特性の低下を防止する
必要がある。The protective coating layer made of polyacetal resin is formed by a method of coating the insulating layer 2 with a polyacetal resin to a predetermined thickness by ordinary extrusion coating and a method of simultaneously extruding the polyacetal resin when the insulating layer 2 is extruded. There is also a method of stacking. The latter coextrusion (coextrusion) method is preferable in view of economy. Also, if higher termite performance is required, the polyacetal resin, 2.
It is possible to add 5 wt% or less of an anti-termite agent such as a drin-based or organic phosphorus-based agent, but it is necessary to keep the addition amount as small as possible to prevent the outflow of the anti-termite agent and the deterioration of extrusion processability and electrical characteristics. is there.

【００１６】[0016]

【実施例】以下、実施例により本発明を具体的に説明す
るが、本発明はこれらに限定されるものではない。EXAMPLES The present invention will now be described specifically with reference to examples, but the present invention is not limited to these examples.

【００１７】（表面ビッカース硬度の測定方法）松沢精
機（株）製微小硬度計（ＭＨＴ−１型）を用い、２３℃
の環境下で、１０ｇｆ、２５秒の負荷条件にて測定し
た。単位はｋｇｆ／ｍｍ2である。(Method of measuring surface Vickers hardness) A microhardness meter (MHT-1 type) manufactured by Matsuzawa Seiki Co., Ltd. was used and the temperature was 23 ° C.
Under the environment, the measurement was performed under a load condition of 10 gf and 25 seconds. The unit is kgf / mm 2 .

【００１８】（実施例１〜３，比較例１〜２）イエシロ
アリの人工飼育巣上に、ポリアセタール系樹脂、電線に
一般的に用いられる軟質ポリ塩化ビニル樹脂および表面
ビッカース硬度の低い組成物等種々の素材からなる試験
体（１２ｍｍ×６０ｍｍ、厚み６ｍｍ）をアカマツ木材
で上下を挟み込んだものを設置し、イエシロアリが自由
に試験体上を往来できるようにし、２８℃の暗室内で３
ヶ月間、イエシロアリの食害に暴露した。試験体の食害
の程度は目視による形状変化で評価した。評価基準は５
段階とし、５：変化なし、４：痕跡程度のかじりがあ
る、３：明らかにかじりがあることが分かる程度のかじ
りがある、２：明らかにかじりがありそれが目立つ、
１：著しいかじりがある、で表した。なお、この試験に
おいて、ポリアセタール系樹脂の場合は、試験片のかど
の部分にかじりは見られたが、平面部分へのかじりは見
られなかった。一方、軟質ポリ塩化ビニル樹脂の場合
は、広い範囲で著しいかじりが見られた。用いた素材、
その表面ビッカース硬度および食害の評価結果を表−１
に示す。(Examples 1 to 3 and Comparative Examples 1 and 2) Various polyacetal resins, soft polyvinyl chloride resins generally used for electric wires, compositions with low surface Vickers hardness, etc., on artificial nests of house termites. A test piece (12 mm × 60 mm, thickness 6 mm) made of the above material was placed with red pine wood sandwiched between the top and bottom to allow the termites to freely move on and off the test piece.
It was exposed to the termite feeding damage for a month. The degree of food damage of the test body was evaluated by visual change in shape. Evaluation standard is 5
It is set as a stage, 5: no change, 4: there is a bite of traces, 3: there is a bite that can be clearly seen to be a bite, 2: there is a bite, and it is noticeable
1: There was a significant bite. In this test, in the case of the polyacetal resin, galling was observed at the corners of the test piece, but no galling was observed at the flat portion. On the other hand, in the case of the soft polyvinyl chloride resin, remarkable galling was observed in a wide range. Material used,
Table 1 shows the evaluation results of the surface Vickers hardness and food damage.
Shown in

【００１９】[0019]

【表１】 [Table 1]

【００２０】（実施例４）図１に示した形状の２芯導線
の外側に軟質ポリ塩化ビニル樹脂のシース層（１．５ｍ
ｍ厚さ）とそのシース層の外側に実施例２で用いたＰＯ
Ｍ／ウレタン樹脂／コアシェル樹脂組成物からなる防蟻
保護層（０．５ｍｍ厚さ）を共押出機により形成し、被
覆した外径１０ｍｍのケーブルを作製した。このケーブ
ル６ｃｍを実施例１と同様の条件下でイエシロアリの食
害に暴露したが、ポリアセタール系樹脂防蟻保護層への
食害は全く生じなかった（評価５）。(Embodiment 4) A sheath layer (1.5 m) made of a soft polyvinyl chloride resin is provided on the outside of the two-core conductor having the shape shown in FIG.
m thickness) and the PO used in Example 2 on the outside of the sheath layer.
A dovetail protection layer (0.5 mm thick) composed of the M / urethane resin / core shell resin composition was formed by a co-extruder to prepare a coated cable having an outer diameter of 10 mm. 6 cm of this cable was exposed to the feeding damage of the termites under the same conditions as in Example 1, but no feeding damage to the polyacetal resin termite protective layer occurred (Evaluation 5).

【００２１】以上の各実施例から明らかなように、ポリ
アセタール系樹脂からなる保護層は高い防蟻性能を示す
ことが分かる。また防蟻剤を添加することなく、ケーブ
ルに高い防蟻性能を付与することができる。As is clear from the above examples, it can be seen that the protective layer made of the polyacetal resin exhibits high ant-repellent performance. Further, it is possible to give the cable a high ant-preventing performance without adding an ant-preventive agent.

【００２２】[0022]

【発明の効果】本発明の防蟻ケーブルは、ポリアセター
ル系樹脂からなる保護被覆層を有するものであり、その
防蟻性能が安定して持続することが期待できる。また防
蟻性を満足すると共に、押出加工性を損なうことなく、
また特に防蟻剤を添加する必要がないので経済合理性の
高いケーブルが得られる。INDUSTRIAL APPLICABILITY The termite-proof cable of the present invention has a protective coating layer made of a polyacetal resin, and its termite-preventing performance can be expected to be stable and continuous. Also, while satisfying the termite-proof property, without impairing the extrusion processability,
Further, since it is not necessary to add an anti-termite agent, a cable with high economic rationality can be obtained.

【図面の簡単な説明】[Brief description of drawings]

【図１】 本発明の防蟻ケーブルの一例を示す概略断面
図である。FIG. 1 is a schematic cross-sectional view showing an example of an anti-termite cable of the present invention.

【符号の説明】[Explanation of symbols]

１ 導体 ２ 絶縁層 ３ 絶縁線芯 ４ 撚線 ５ シース層 ６ ポリアセタール系樹脂製保護被覆層 ７ 防蟻ケーブル 1 Conductor 2 Insulating Layer 3 Insulated Wire Core 4 Stranded Wire 5 Sheath Layer 6 Polyacetal Resin Protective Coating Layer 7 Dovetail Cable

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 ケーブルの最外層にポリアセタール系樹
脂製保護被覆層を設けたことを特徴とする防蟻ケーブ
ル。1. An anti-termite cable, wherein a protective coating layer made of polyacetal resin is provided on the outermost layer of the cable. 【請求項２】 ポリアセタール系樹脂がポリアセタール
樹脂からなるか、あるいはポリアセタール樹脂を主体と
する他の樹脂との組成物からなることを特徴とする請求
項１記載の防蟻ケーブル。2. The dovetail cable according to claim 1, wherein the polyacetal-based resin comprises a polyacetal resin or a composition with another resin mainly containing the polyacetal resin. 【請求項３】 ポリアセタール樹脂を主体とする他の樹
脂との組成物がポリアセタール樹脂と熱可塑性ポリウレ
タン樹脂及び／またはコアシェルポリマーからなること
を特徴とする請求項２記載の防蟻ケーブル。3. The dovetail-proof cable according to claim 2, wherein the composition of the other resin containing a polyacetal resin as a main component comprises a polyacetal resin, a thermoplastic polyurethane resin and / or a core shell polymer. 【請求項４】 ポリアセタール系樹脂製保護被覆層とそ
の内層に位置するポリ塩化ビニル樹脂被覆層が相接触し
て被覆層を形成していることを特徴とする請求項１〜３
の何れかに記載の防蟻ケーブル。4. A protective coating layer made of a polyacetal resin and a polyvinyl chloride resin coating layer located inside the protective coating layer are in contact with each other to form a coating layer.
An anti-termite cable according to any one of 1. 【請求項５】 ポリアセタール系樹脂製保護被覆層の表
面ビッカース硬度が２．５以上であることを特徴とする
請求項１〜４の何れかに記載の防蟻ケーブル。5. The dovetail-proof cable according to claim 1, wherein the polyacetal-based resin protective coating layer has a surface Vickers hardness of 2.5 or more.
JP8115351A 1996-04-12 1996-04-12 Termite preventing cable Pending JPH09282950A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP8115351A JPH09282950A (en) 1996-04-12 1996-04-12 Termite preventing cable
PCT/JP1997/001271 WO1997039459A1 (en) 1996-04-12 1997-04-11 Ant-proof cable
AU25219/97A AU727646B2 (en) 1996-04-12 1997-04-11 Ant-proof cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8115351A JPH09282950A (en) 1996-04-12 1996-04-12 Termite preventing cable

Publications (1)

Publication Number Publication Date
JPH09282950A true JPH09282950A (en) 1997-10-31

Family

ID=14660381

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8115351A Pending JPH09282950A (en) 1996-04-12 1996-04-12 Termite preventing cable

Country Status (3)

Country Link
JP (1) JPH09282950A (en)
AU (1) AU727646B2 (en)
WO (1) WO1997039459A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007079536A1 (en) * 2006-01-12 2007-07-19 Fmc Australasia Pty Ltd Cable with insecticide in plastics sheath

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002349500A1 (en) * 2001-12-12 2003-06-23 Asahi Kasei Chemicals Corporation Ramp for hard disc
CN107492416A (en) * 2017-08-04 2017-12-19 安徽远征电缆科技有限公司 A kind of ant proof type polyvinyl chloride insulation power cable with flat steel wire armouring

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06306246A (en) * 1993-04-22 1994-11-01 Denki Kagaku Kogyo Kk Resin composition and electric wire produced by using the same composition
JPH07126483A (en) * 1993-11-04 1995-05-16 Polyplastics Co Polyacetal resin composition
US5451624A (en) * 1994-02-15 1995-09-19 Rohm And Haas Company Stabilized modifier and impact modified thermoplastics
JPH0982142A (en) * 1995-09-18 1997-03-28 Yazaki Corp Ant proof and mouse proof wire cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007079536A1 (en) * 2006-01-12 2007-07-19 Fmc Australasia Pty Ltd Cable with insecticide in plastics sheath

Also Published As

Publication number Publication date
AU727646B2 (en) 2000-12-21
AU2521997A (en) 1997-11-07
WO1997039459A1 (en) 1997-10-23

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