JP2009218035A - Electric wire, and manufacturing method for electric wire - Google Patents

Electric wire, and manufacturing method for electric wire Download PDF

Info

Publication number
JP2009218035A
JP2009218035A JP2008059002A JP2008059002A JP2009218035A JP 2009218035 A JP2009218035 A JP 2009218035A JP 2008059002 A JP2008059002 A JP 2008059002A JP 2008059002 A JP2008059002 A JP 2008059002A JP 2009218035 A JP2009218035 A JP 2009218035A
Authority
JP
Japan
Prior art keywords
electric wire
cross
electron beam
linking
heating
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
Application number
JP2008059002A
Other languages
Japanese (ja)
Other versions
JP5483665B2 (en
Inventor
Yutaka Watabe
豊 渡部
Kenichi Kusayanagi
健一 草▲柳▼
Shinichi Watanabe
伸一 渡辺
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.)
Yazaki Corp
Original Assignee
Yazaki Corp
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 Yazaki Corp filed Critical Yazaki Corp
Priority to JP2008059002A priority Critical patent/JP5483665B2/en
Publication of JP2009218035A publication Critical patent/JP2009218035A/en
Application granted granted Critical
Publication of JP5483665B2 publication Critical patent/JP5483665B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wire and a manufacturing method for the electric wire, achieving space-saving and cost reduction without damaging an external coating appearance. <P>SOLUTION: A surface side of an extrusion coating 7 prior to becoming an insulator 3 is bridged with electron beam irradiation with low energy in a surface side bridging process, and a low-energy electron beam irradiated bridge section 4 with dozens of microns thickness is formed in this process. An inner side rather than the surface side of the extrusion coating 7 prior to becoming the insulator 3 is heated by induction heating or microwave heating in an inner side bridging process, and is thermally bridged. An induction heating bridge section 5 (or microwave heating bridge section 6) is formed on an inner side of the low-energy electron beam irradiated bridge section 4 by the process. The insulator 3 having the low-energy electron beam irradiated bridge section 4 and the induction heating bridge section 5 is formed on a conductor 2 through these processes. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、被覆を架橋してなる電線と、被覆を架橋する工程を含む電線の製造方法とに関し、詳しくは、耐熱電線と耐熱電線の製造方法とに関する。   The present invention relates to an electric wire obtained by cross-linking a coating and a method for manufacturing an electric wire including a step of cross-linking the coating, and in particular, relates to a heat-resistant electric wire and a method for manufacturing a heat-resistant electric wire.

電線の耐熱性を向上させる方法としては、被覆となる樹脂を架橋させることが知られている。具体的には、ポリエチレンやポリ塩化ビニル等の樹脂を用いて押出成形により被覆を形成する過程で電子線照射を施し、これにより樹脂を架橋させる方法や、架橋剤を配合した上記樹脂を用いて押出成形により被覆を形成する過程で加熱によって樹脂を架橋させる方法が知られている。   As a method for improving the heat resistance of an electric wire, it is known to crosslink a resin serving as a coating. Specifically, using a resin such as polyethylene or polyvinyl chloride, an electron beam irradiation is performed in the process of forming a coating by extrusion molding, thereby crosslinking the resin, or using the above resin containing a crosslinking agent. A method of crosslinking a resin by heating in the process of forming a coating by extrusion molding is known.

電子線照射を施し樹脂を架橋させる方法にあっては電子線照射装置が必要になり、加熱により架橋させる方法にあっては樹脂を加熱するための加熱管が必要になる。
特開2006−19147号公報 特開2005−255497号公報 特開2003−115227号公報
An electron beam irradiation apparatus is required for the method of crosslinking the resin by applying electron beam irradiation, and a heating tube for heating the resin is required for the method of crosslinking by heating.
JP 2006-19147 A JP 2005-255497 A JP 2003-115227 A

上記従来の電子線照射架橋にあっては、電子線のエネルギーが数百kV〜数千kVにもなる高エネルギーの電子線照射装置を必要とすることから設備が大型化し、結果、十分な設置スペースを確保しなければならないという問題点を有している。また、大型の装置であることから、設備導入費用や維持費用がかかるという問題点も有している。   In the above-mentioned conventional electron beam irradiation cross-linking, since the energy of the electron beam requires a high-energy electron beam irradiation device having several hundred kV to several thousand kV, the equipment is enlarged, resulting in sufficient installation. There is a problem that space must be secured. Moreover, since it is a large sized apparatus, there also exists a problem that installation installation expense and maintenance expense start.

一方、加熱架橋にあっては、樹脂を加熱するだけの設備ですむことから、電子線照射架橋のような大型の設備を必要とすることはなく、従って上記問題点を解消することが可能になる。しかしながら、加熱架橋にあっては、加熱架橋反応によって発生したガスにより被覆が発泡してしまうことがあり、この発泡によって被覆外観が損なわれてしまう(被覆表面がざらついてしまう)という問題点を有している。   On the other hand, in the case of heating cross-linking, it is only necessary to heat the resin, so there is no need for large equipment such as electron beam irradiation cross-linking, and thus the above problems can be solved. Become. However, in the case of heat crosslinking, the coating may foam due to the gas generated by the heat crosslinking reaction, and this foaming has a problem that the coating appearance is damaged (the coating surface becomes rough). is doing.

本発明は、上記した事情に鑑みてなされたもので、被覆外観を損なわずに省スペース化や費用低減を図ることが可能な電線及び電線の製造方法を提供することを課題とする。   This invention is made | formed in view of an above-described situation, and makes it a subject to provide the manufacturing method of an electric wire and electric wire which can aim at space saving and cost reduction, without impairing a coating | coated external appearance.

上記課題を解決するためになされた請求項1記載の本発明の電線は、表面側に低エネルギー電子線照射架橋部分を有し、これよりも内側に且つ後から形成される誘導加熱架橋部分又はマイクロ波加熱架橋部分を有するオレフィン系樹脂製の被覆を備えてなることを特徴としている。   The electric wire of the present invention according to claim 1, which has been made to solve the above-mentioned problems, has a low-energy electron beam irradiation cross-linked portion on the surface side, and an induction heating cross-linked portion formed later on the inner side than this or It is characterized by comprising a coating made of an olefin resin having a microwave heating cross-linked portion.

また、上記課題を解決するためになされた請求項2記載の本発明の電線の製造方法は、架橋剤を配合したオレフィン系樹脂を押し出した後に低エネルギー電子線照射にて表面側を架橋する表面側架橋工程と、該表面側架橋工程の後に前記表面側よりも内側を加熱にて架橋する内側架橋工程と、を含む被覆形成架橋工程を行うことを特徴としている。   Moreover, the manufacturing method of the electric wire of this invention of Claim 2 made | formed in order to solve the said subject is the surface which bridge | crosslinks the surface side by low energy electron beam irradiation after extruding the olefin resin which mix | blended the crosslinking agent. It is characterized by performing a coating formation crosslinking step including a side crosslinking step and an inner crosslinking step in which the inner side than the surface side is crosslinked by heating after the surface side crosslinking step.

請求項3記載の本発明の電線の製造方法は、請求項2に記載の電線の製造方法において、前記低エネルギー電子線照射の加速電圧範囲を50kV〜100kVとすることを特徴としている。   According to a third aspect of the present invention, there is provided a method of manufacturing an electric wire according to the second aspect, wherein the acceleration voltage range of the low energy electron beam irradiation is 50 kV to 100 kV.

請求項4記載の本発明の電線の製造方法は、請求項2又は請求項3に記載の電線の製造方法において、前記加熱を誘導加熱又はマイクロ波加熱のいずれかとすることを特徴としている。   According to a fourth aspect of the present invention, there is provided a method for manufacturing an electric wire according to the second or third aspect, wherein the heating is one of induction heating and microwave heating.

以上のような特徴を有する本発明によれば、架橋されて耐熱性が向上したオレフィン系樹脂製の被覆を備える電線が製造される。被覆は、導体を覆う絶縁体やシースであり、このような被覆は、先ず低エネルギー電子線照射にて表面側が架橋され、次に表面側よりも内側が加熱によって架橋されて形成される。   According to the present invention having the above-described features, an electric wire including a coating made of an olefin resin that is cross-linked and has improved heat resistance is manufactured. The coating is an insulator or a sheath covering the conductor. Such a coating is formed by first crosslinking the surface side by low-energy electron beam irradiation, and then crosslinking the inside from the surface side by heating.

本発明によれば、仮に加熱架橋反応によって発生したガスで被覆が発泡しようとしても、最初に低エネルギー電子線照射にて表面側が架橋されて低エネルギー電子線照射架橋部分が形成されることから、被覆外観が損なわれるようなことが避けられる。   According to the present invention, even if the coating is going to foam with the gas generated by the heat crosslinking reaction, the surface side is first crosslinked by low energy electron beam irradiation to form a low energy electron beam irradiation crosslinked portion. It is avoided that the coating appearance is impaired.

本発明によれば、低エネルギーの電子線を照射するための装置は、高エネルギーのものと比べて小型になり、また、誘導加熱又はマイクロ波加熱を利用すれば加熱架橋する装置も一層小型になる(生産性の観点から加熱管よりも誘導加熱やマイクロ波加熱の方が良好である。尚、誘導加熱とマイクロ波加熱とでは、マイクロ波加熱の方が生産性が優れている)。   According to the present invention, a device for irradiating a low-energy electron beam is smaller than that of a high-energy device, and a device for crosslinking by heating is further reduced by using induction heating or microwave heating. (From the viewpoint of productivity, induction heating and microwave heating are better than heating tubes. In addition, in induction heating and microwave heating, productivity is higher in microwave heating).

請求項1、2に記載された本発明によれば、耐熱性のある電線を製造するために被覆の架橋に工夫をする。この工夫により外観の良好な耐熱性のある電線を提供することができるという効果を奏する。また、本発明によれば、被覆の架橋に工夫をすることによって、大型の装置を用いなくともよくなることから、従来よりも省スペース化や費用低減を図ることができるという効果も奏する。   According to the present invention described in claims 1 and 2, the cross-linking of the coating is devised to produce a heat-resistant electric wire. This device has the effect of providing a heat-resistant electric wire with a good appearance. In addition, according to the present invention, it is not necessary to use a large-sized device by devising the cross-linking of the coating, so that it is possible to achieve space saving and cost reduction as compared with the prior art.

請求項3に記載された本発明によれば、電子線のエネルギーが数百kV〜数千kVにもなる高エネルギーの電子線照射装置とは異なり、50kV〜100kVの低エネルギーの電子線照射装置を用いればよいことから、従来よりも省スペース化や費用低減を図ることができるという効果を奏する。   According to the third aspect of the present invention, unlike a high-energy electron beam irradiation apparatus in which the energy of the electron beam is several hundred kV to several thousand kV, the low-energy electron beam irradiation apparatus is 50 kV to 100 kV. Therefore, there is an effect that space saving and cost reduction can be achieved compared to the conventional case.

請求項4に記載された本発明によれば、誘導加熱又はマイクロ波加熱で加熱架橋を行うことから、加熱管よりも省スペース化を図ることができるという効果を奏する。また、加熱管と比べて生産性向上を図ることができるという効果も奏する。   According to the present invention described in claim 4, since heat crosslinking is performed by induction heating or microwave heating, there is an effect that space saving can be achieved as compared with the heating tube. Moreover, the effect that productivity can be improved compared with a heating tube is also show | played.

以下、図面を参照しながら説明する。図1は本発明の電線及び電線の製造方法の一実施の形態を示す工程説明図及び工程に合わせた端面図である。   Hereinafter, description will be given with reference to the drawings. FIG. 1 is a process explanatory view showing an embodiment of an electric wire and an electric wire manufacturing method of the present invention and an end view according to the process.

図1において、引用符号1は本発明の電線を示している。電線1は、耐熱性のある電線であって、公知の導体2と、この導体2を被覆する絶縁体3(被覆)とを備えて構成されている。絶縁体3は、電子線照射架橋が可能なオレフィン系樹脂であるとともに、架橋剤を配合して熱架橋することも可能なオレフィン系樹脂を用い、さらに、このオレフィン系樹脂を架橋することによって図示の如く形成されている。絶縁体3は、押出成形の後に被覆形成架橋工程を経ることによって形成されている。   In FIG. 1, reference numeral 1 indicates an electric wire of the present invention. The electric wire 1 is a heat-resistant electric wire, and includes a known conductor 2 and an insulator 3 (coating) that covers the conductor 2. The insulator 3 is an olefin resin that can be cross-linked by electron beam irradiation, and an olefin resin that can be thermally cross-linked by adding a cross-linking agent is used. Further, the insulator 3 is illustrated by cross-linking the olefin resin. It is formed as follows. The insulator 3 is formed by performing a coating formation cross-linking step after extrusion.

絶縁体3は、この表面側に低エネルギー電子線照射架橋部分4を有するとともに、これよりも内側に誘導加熱架橋部分5(又はマイクロ波加熱架橋部分6)を有する構成になっている。低エネルギー電子線照射架橋部分4は、電子線照射架橋によって形成されている。この低エネルギー電子線照射架橋部分4は、本形態において、数十ミクロン程度の薄さで形成されている。低エネルギー電子線照射架橋部分4は、誘導加熱架橋部分5よりも先に形成されるようになっている。誘導加熱架橋部分5は、加熱架橋によって形成されている。   The insulator 3 has a low energy electron beam irradiation cross-linking portion 4 on the surface side and an induction heating cross-linking portion 5 (or microwave heating cross-linking portion 6) on the inner side. The low energy electron beam irradiation crosslinked portion 4 is formed by electron beam irradiation crosslinking. In this embodiment, the low energy electron beam irradiation cross-linked portion 4 is formed with a thickness of about several tens of microns. The low energy electron beam irradiation crosslinked portion 4 is formed before the induction heating crosslinked portion 5. The induction heating cross-linked portion 5 is formed by heat cross-linking.

上記オレフィン系樹脂としては、直鎖状低密度ポリエチレン(LLDPE)、超低密度ポリエチレン(VLDPE)、エチレン−αオレフィン共重合体、エチレン−酢酸ビニル共重合体(EVA)、エチレン−アクリル酸共重合体、エチレン−メタクリル酸共重合体、エチレン−アクリル酸エチル共重合体(EEA)、高密度ポリエチレン(HDPE)、ポリプロピレン(PP)等のオレフィンポリマーのいずれか1又は2以上を混合したものが挙げられる(一例であるものとする)。   Examples of the olefin resin include linear low density polyethylene (LLDPE), very low density polyethylene (VLDPE), ethylene-α olefin copolymer, ethylene-vinyl acetate copolymer (EVA), and ethylene-acrylic acid copolymer. A mixture, one or two or more of olefin polymers such as ethylene-methacrylic acid copolymer, ethylene-ethyl acrylate copolymer (EEA), high density polyethylene (HDPE), and polypropylene (PP) are listed. (Assumed to be an example).

また、上記架橋剤としては、ラジカル型架橋剤のパーオキサイド等であって、例えばジクミルパーオキサイドが挙げられる(一例であるものとする)。   Moreover, as said crosslinking agent, it is a peroxide of a radical type crosslinking agent, Comprising: For example, a dicumyl peroxide is mentioned (it shall be an example).

上記電子線照射架橋は、ポリマーであるオレフィン系樹脂に電子線を照射することによってポリマーを活性化させ、水素を放出させてポリマー遊離基を生成し、このポリマー遊離基同士の結合によってポリマー架橋を形成するようなものとなっている。本発明における電子線のエネルギーは、50kV〜100kVの範囲(低エネルギー電子線照射の加速電圧範囲)であって、低エネルギーの電子線を用いるようになっている。尚、低エネルギーの電子線を照射するための装置は、電子線のエネルギーが数百kV〜数千kVにもなる高エネルギーの電子線照射装置と比べて格段に小型になるのは言うまでもない。   In the electron beam irradiation cross-linking, the polymer is activated by irradiating the olefin resin as a polymer with an electron beam, hydrogen is released to generate a polymer free radical, and the polymer free radical is bonded to form a polymer cross-link. It is like forming. The energy of the electron beam in the present invention is in a range of 50 kV to 100 kV (acceleration voltage range of low energy electron beam irradiation), and a low energy electron beam is used. Needless to say, a device for irradiating a low-energy electron beam is much smaller than a high-energy electron beam irradiating device having an electron beam energy of several hundred kV to several thousand kV.

上記加熱架橋は、加熱することにより架橋をするものであって、架橋剤を配合したオレフィン系樹脂を加熱すると、先ず、この加熱により架橋剤が分解されて遊離基を生成する。そして、遊離基との反応によってポリマー遊離基を生成し、このポリマー遊離基同士の結合によってポリマー架橋を形成するようなものとなっている。本発明における加熱架橋においては、加熱管よりも小型化を図るために、また、生産性の向上を図るために、誘導加熱又はマイクロ波加熱のいずれかによって加熱をするものとする(加熱管を除くものではないものとする。加熱管を用いても十分に小型になる)。   The heating crosslinking is performed by heating, and when the olefin resin mixed with the crosslinking agent is heated, the crosslinking agent is first decomposed by the heating to generate free radicals. And a polymer free radical is produced | generated by reaction with a free radical, A polymer bridge | crosslinking is formed by the coupling | bonding of this polymer free radical. In the heating crosslinking in the present invention, heating is performed by either induction heating or microwave heating in order to reduce the size compared to the heating tube and to improve the productivity (heating tube). (It should not be excluded. Even if a heating tube is used, it is sufficiently small).

次に、電線1に係る本発明の製造方法について説明する。電線1は、導体2の上に、架橋剤を配合したオレフィン系樹脂を押出被覆する押出成形と、この後に行われる被覆形成架橋工程とを経て製造される。押出成形は、公知の押出成形機が用いられる。被覆形成架橋工程は、表面側架橋工程と内側架橋工程とを含む工程であり、これによって被覆形成が完了すると電線1の製造も完了する。   Next, the manufacturing method of the present invention related to the electric wire 1 will be described. The electric wire 1 is manufactured through the extrusion molding which carries out the extrusion coating of the olefin resin which mix | blended the crosslinking agent on the conductor 2, and the coating formation bridge | crosslinking process performed after this. For the extrusion molding, a known extrusion molding machine is used. The coating formation cross-linking step is a step including a surface side cross-linking step and an inner cross-linking step, and when the coating formation is completed, the manufacture of the electric wire 1 is also completed.

表面側架橋工程は、低エネルギーの電子線照射にて、絶縁体3になる前の押出被覆7の表面側を電子線照射架橋する工程であって、この工程により数十ミクロン程度の薄さの低エネルギー電子線照射架橋部分4が形成される。   The surface side cross-linking step is a step in which the surface side of the extrusion coating 7 before becoming the insulator 3 is cross-linked by electron beam irradiation by low-energy electron beam irradiation. A low energy electron beam irradiated cross-linked portion 4 is formed.

内側架橋工程は、表面側架橋工程の後に行われる工程であって、絶縁体3になる前の押出被覆7の表面側よりも内側を誘導加熱又はマイクロ波加熱によって加熱する加熱架橋をする工程であり、この工程によって低エネルギー電子線照射架橋部分4の内側に誘導加熱架橋部分5(又はマイクロ波加熱架橋部分6)が形成される。この形成により、低エネルギー電子線照射架橋部分4と誘導加熱架橋部分5とを有する絶縁体3が導体2の上に形成される。   The inner cross-linking step is a step performed after the surface side cross-linking step, and is a step of performing heat cross-linking in which the inner side is heated by induction heating or microwave heating from the surface side of the extrusion coating 7 before becoming the insulator 3. There is an induction heating crosslinking portion 5 (or microwave heating crosslinking portion 6) inside the low energy electron beam irradiation crosslinking portion 4 by this process. By this formation, the insulator 3 having the low energy electron beam irradiation crosslinked portion 4 and the induction heating crosslinked portion 5 is formed on the conductor 2.

以上、本発明によれば、仮に加熱架橋反応によって発生したガスで絶縁体3(被覆)が発泡しようとしても、最初に低エネルギーの電子線照射にて表面側が架橋されて低エネルギー電子線照射架橋部分4が形成されることから、被覆外観が損なわれるようなことが避けられる。本発明によれば、絶縁体3(被覆)の架橋に工夫をすることで、外観の良好な耐熱性のある電線1を提供することができる。   As described above, according to the present invention, even if the insulator 3 (coating) is to be foamed with the gas generated by the heat crosslinking reaction, the surface side is first crosslinked by low energy electron beam irradiation, and the low energy electron beam irradiation crosslinking is performed. Since the portion 4 is formed, it is avoided that the coating appearance is impaired. According to the present invention, it is possible to provide the heat-resistant electric wire 1 having a good appearance by devising the crosslinking of the insulator 3 (coating).

また、本発明によれば、耐熱性のある電線1を製造するために絶縁体3(被覆)の架橋に工夫をすることから、従来のような大型の装置を用いなくともよく、結果、従来よりも省スペース化や費用低減を図ることができる。   In addition, according to the present invention, since it is devised to bridge the insulator 3 (coating) in order to manufacture the heat-resistant electric wire 1, it is not necessary to use a large-sized device as in the prior art. Space saving and cost reduction can be achieved.

尚、本形態においては絶縁体3を特許請求の範囲に記載した被覆としているが、これに限らずシースを備える電線に適用(シースに適用)してもよいものとする。この他、オレフィン系樹脂に例えば金属水酸化物を配合して難燃性を持たせるようにしてもよいものとする。   In this embodiment, the insulator 3 has the coating described in the claims. However, the present invention is not limited to this, and the insulator 3 may be applied to an electric wire including a sheath (applied to a sheath). In addition, for example, a metal hydroxide may be added to the olefin resin to impart flame retardancy.

本発明は本発明の主旨を変えない範囲で種々変更実施可能なことは勿論である。   It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

本発明の電線及び電線の製造方法の一実施の形態を示す工程説明図及び工程に合わせた端面図である。It is the end view matched with the process explanatory drawing and process which show one Embodiment of the electric wire of this invention, and the manufacturing method of an electric wire.

符号の説明Explanation of symbols

1 電線
2 導体
3 絶縁体(被覆)
4 低エネルギー電子線照射架橋部分
5 誘導加熱架橋部分
6 マイクロ波加熱架橋部分
7 絶縁体になる前の押出被覆
1 Electric wire 2 Conductor 3 Insulator (covering)
4 Low energy electron beam irradiation cross-linking part 5 Induction heating cross-linking part 6 Microwave heating cross-linking part 7 Extrusion coating before becoming an insulator

Claims (4)

表面側に低エネルギー電子線照射架橋部分を有し、これよりも内側に且つ後から形成される誘導加熱架橋部分又はマイクロ波加熱架橋部分を有するオレフィン系樹脂製の被覆を備えてなる
ことを特徴とする電線。
It has a low-energy electron beam irradiation cross-linking part on the surface side, and is provided with a coating made of an olefin resin having an induction heating cross-linking part or a microwave heating cross-linking part formed later and on the inner side. Electric wire.
架橋剤を配合したオレフィン系樹脂を押し出した後に低エネルギー電子線照射にて表面側を架橋する表面側架橋工程と、
該表面側架橋工程の後に前記表面側よりも内側を加熱にて架橋する内側架橋工程と、
を含む被覆形成架橋工程を行う
ことを特徴とする電線の製造方法。
A surface side cross-linking step of cross-linking the surface side by low-energy electron beam irradiation after extruding an olefin resin containing a cross-linking agent;
An inner cross-linking step of cross-linking the inside by heating after the surface-side cross-linking step;
A method for producing an electric wire, comprising performing a coating formation cross-linking step including:
請求項2に記載の電線の製造方法において、
前記低エネルギー電子線照射の加速電圧範囲を50kV〜100kVとする
ことを特徴とする電線の製造方法。
In the manufacturing method of the electric wire according to claim 2,
The acceleration voltage range of the said low energy electron beam irradiation shall be 50 kV-100 kV. The manufacturing method of the electric wire characterized by the above-mentioned.
請求項2又は請求項3に記載の電線の製造方法において、
前記加熱を誘導加熱又はマイクロ波加熱のいずれかとする
ことを特徴とする電線の製造方法。
In the manufacturing method of the electric wire according to claim 2 or claim 3,
The method for manufacturing an electric wire, wherein the heating is either induction heating or microwave heating.
JP2008059002A 2008-03-10 2008-03-10 Electric wire manufacturing method Expired - Fee Related JP5483665B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008059002A JP5483665B2 (en) 2008-03-10 2008-03-10 Electric wire manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008059002A JP5483665B2 (en) 2008-03-10 2008-03-10 Electric wire manufacturing method

Publications (2)

Publication Number Publication Date
JP2009218035A true JP2009218035A (en) 2009-09-24
JP5483665B2 JP5483665B2 (en) 2014-05-07

Family

ID=41189691

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008059002A Expired - Fee Related JP5483665B2 (en) 2008-03-10 2008-03-10 Electric wire manufacturing method

Country Status (1)

Country Link
JP (1) JP5483665B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013149543A (en) * 2012-01-23 2013-08-01 Yazaki Corp Surface crosslinking wire
CN109867852A (en) * 2017-12-04 2019-06-11 日立金属株式会社 The manufacturing method of lining material, cable and cable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4865273A (en) * 1971-12-13 1973-09-08
JPS52136375A (en) * 1976-05-11 1977-11-15 Mitsubishi Electric Corp Manufacturing method of polyethylene insulating conductor
JPH06111639A (en) * 1992-09-25 1994-04-22 Sumitomo Electric Ind Ltd Insulated wire and manufacture thereof
JPH06295631A (en) * 1993-04-02 1994-10-21 Fujikura Ltd Manufacture of foaming insulation wire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4865273A (en) * 1971-12-13 1973-09-08
JPS52136375A (en) * 1976-05-11 1977-11-15 Mitsubishi Electric Corp Manufacturing method of polyethylene insulating conductor
JPH06111639A (en) * 1992-09-25 1994-04-22 Sumitomo Electric Ind Ltd Insulated wire and manufacture thereof
JPH06295631A (en) * 1993-04-02 1994-10-21 Fujikura Ltd Manufacture of foaming insulation wire

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013149543A (en) * 2012-01-23 2013-08-01 Yazaki Corp Surface crosslinking wire
CN109867852A (en) * 2017-12-04 2019-06-11 日立金属株式会社 The manufacturing method of lining material, cable and cable
JP2019099701A (en) * 2017-12-04 2019-06-24 日立金属株式会社 Coating material, cable, and manufacturing method of cable
JP7059598B2 (en) 2017-12-04 2022-04-26 日立金属株式会社 Coating material, cable, and method of manufacturing cable
CN109867852B (en) * 2017-12-04 2023-09-29 株式会社博迈立铖 Coating material, cable, and method for producing cable
US11970587B2 (en) 2017-12-04 2024-04-30 Proterial, Ltd. Covering material, cable, and method of manufacturing cable

Also Published As

Publication number Publication date
JP5483665B2 (en) 2014-05-07

Similar Documents

Publication Publication Date Title
JP5821827B2 (en) Insulated electric wire for railway vehicles and cable for railway vehicles using non-halogen crosslinked resin composition
EP1060540B1 (en) Sealing article
JP6121720B2 (en) Heat resistant wire
CN104240809A (en) Non-halogen flame retardant electric wire cable
US9624366B2 (en) Crosslinkable halogen-free resin composition, cross-linked insulated wire and cable
JPWO2012124589A1 (en) Non-halogen flame retardant resin composition and insulated wire and tube using the same
JP5928936B2 (en) Method for producing surface cross-linked electric wire
JP5483665B2 (en) Electric wire manufacturing method
JP4697038B2 (en) High pressure fireproof cable and manufacturing method thereof
JP6940367B2 (en) Manufacturing method of foamed polyolefin-coated electric wire / cable and foamed polyolefin-coated electric wire / cable
JP2009070611A (en) Manufacturing method for electric wire and cable
JP2015002063A (en) Non-halogen flame-retardant electric cable
JP7374079B2 (en) Flame retardant resin composition, flame retardant heat shrinkable tube and flame retardant insulated wire
JP5026232B2 (en) Method for producing crosslinked butyl rubber foam
JP2010157413A (en) Non-halogen flame retardant electric wire/cable
JP7267859B2 (en) wire or cable
JP2018129195A (en) Flat wires and flat cables
JP2017069130A (en) Insulation wire
TW202100636A (en) Polyolefin resin foam sheet and method for producing same
JP7156823B2 (en) Method for manufacturing foamed polyolefin coated wire/cable and foamed polyolefin coated wire/cable
JP4774199B2 (en) Method for producing flame retardant conductive cross-linked polyolefin foam
JP7156822B2 (en) Method for manufacturing foamed polyolefin coated wire/cable and foamed polyolefin coated wire/cable
JPH07145288A (en) Resin composition and thermally shrinkable tube therefrom
JP2018029008A (en) Insulated wires and cables, and method for producing insulated wires and cables
JP2018085309A (en) Production method for polyolefin foam-covered wire and cable and polyolefin foam-covered wire and cable

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110131

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20121129

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130402

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130603

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20130716

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20131015

A911 Transfer to examiner for re-examination before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20131106

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20131126

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140127

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140212

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140217

R150 Certificate of patent or registration of utility model

Ref document number: 5483665

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees