JP2681069B2 - 長手体および曲り体の被覆方法 - Google Patents

長手体および曲り体の被覆方法

Info

Publication number
JP2681069B2
JP2681069B2 JP62301071A JP30107187A JP2681069B2 JP 2681069 B2 JP2681069 B2 JP 2681069B2 JP 62301071 A JP62301071 A JP 62301071A JP 30107187 A JP30107187 A JP 30107187A JP 2681069 B2 JP2681069 B2 JP 2681069B2
Authority
JP
Japan
Prior art keywords
coating
conductor
coating layer
tubular body
longitudinal
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
Application number
JP62301071A
Other languages
English (en)
Other versions
JPH01141026A (ja
Inventor
明雄 中芝
寛之 西村
益司 西野
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.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas 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 Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP62301071A priority Critical patent/JP2681069B2/ja
Publication of JPH01141026A publication Critical patent/JPH01141026A/ja
Application granted granted Critical
Publication of JP2681069B2 publication Critical patent/JP2681069B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/3408—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B29C65/3416—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements comprising discontinuous fibre-reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/3436—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising independent continuous fibre-reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/344—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint being a woven or non-woven fabric or being a mesh
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B29C66/496—Internally supporting the, e.g. tubular, article during joining using a support which remains in the joined object
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53241—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being tubular and said substantially annular single elements being of finite length relative to the infinite length of said tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3484—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic
    • B29C65/3492—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic being carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • B29C66/12821—Stepped joint cross-sections comprising at least one overlap joint-segment comprising at least two overlap joint-segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • B29C66/12841—Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 技術分野 本発明は、たとえば流体を輸送する鋼管の外周面にポ
リエチレンなどから成る熱可塑性被覆層が形成されて構
成された管体などの長手体および曲り体の被覆方法に関
する。 背景技術 鋼管の外周面にポリエチレン製被覆層が形成されて構
成された直管体同志または被覆層の施されていない曲り
管体とを、溶接によつてまたはねじなどによつて接続す
る際には、その接続部分付近で被覆層が除去される。接
続後においては被覆層から露出している鋼管を従来で
は、粘着剤が一表面に付着されている合成樹脂製テープ
を巻付けて保護しており、あるいはまた内面に粘着剤が
付着された熱収縮性を有する筒体をかぶせ、この筒体を
バーナなどを用いて加熱して被覆層から露出している鋼
管およびその付近を保護している。 発明が解決すべき問題点 このような先行技術では、作業性が悪く、また作業に
熟練を必要とするとともに、また各作業者毎に気密性の
品質にばらつきを生じる。しかもまた熱収縮性筒体を用
いる際にバーナなどを用い、したがつて危険である。 本発明の目的は、作業性を向上し、各作業者毎の品質
のばらつきをなくし、しかも安全性が向上された長手体
および曲り体の被覆方法を提供することである。 問題点を解決するための手段 本発明は、長手体本体の外周面に熱可塑性合成樹脂製
被覆層が形成されて構成された長手体および被覆層の施
されていない曲り体などの被覆方法において、 長手体本体の外周面にかぶせられ、周方向に分断され
た熱可塑性合成樹脂材料で構成される筒体であつて、 周方向両端部に、軸線方向に延びて外部に突出した一
対の係止部と、 少なくとも軸線方向両端部近傍に設けられる導電体と
を有する筒体と、 筒体の軸線方向に延び、前記一対の係止部を係止する
係止部材とを含み、 被覆層が除去されて露出している長手体本体の部分ま
たは前記曲り体と、長手体本体の被覆層とに亘つて、被
覆層を導電体のある部分に重ねてそれらの外周面に前記
筒体をかぶせ、 一対の係止部を係止部材によつて係止し、 導電体を電力付勢してジユール熱によつて加熱し、被
覆層と筒体とを熱溶着することを特徴とする長手体およ
び曲り体の被覆方法である。 本発明の好ましい実施形態では、前記導電体は、導電
性繊維あることを特徴とする。 また本発明の好ましい実施形態では、前記導電性繊維
は、炭素繊維であることを特徴とする。 また本発明の好ましい実施形態では、前記導電体は、
発熱線であることを特徴とする。 また本発明の好ましい実施形態では、前記被覆層と筒
体との間にホツトメルト接着剤を介在することを特徴と
する。 また本発明の好ましい実施形態では、前記筒体は、熱
収縮性を有することを特徴とする。 作 用 本発明に従えば、熱可塑性合成樹脂材料で構成される
筒体は、周方向に分断され、その両端に軸線方向に延び
外部に突出する一対の係止部を有し、長手体本体の被覆
層に、筒体の両端部が重なるように長手体本体に筒体が
かぶせられる。係止部は、その全体が係止部材によつて
係止される。これによつて筒体の両端は被覆層に密着す
る。また筒体の少なくとも両端部の被覆層に重なる部分
には、導電性が設けられており、したがつてこの導電体
を電力付勢すると、導電体がジユール熱を発生し、筒体
と被覆層とが相互に熱溶着し気密的に接着される。 導電体はニクロム線などの発熱線でもよいが、これが
導電性繊維であれば、少なくとも被覆層と筒体との重な
る部分が均一に加熱され、熱溶着が全体的気密に行われ
る。 また導電性繊維が炭素繊維であれば、炭素繊維によつ
て溶着部分が熱溶着後、補強される。 また被覆層と筒体を構成する熱可塑性合成樹脂の相性
がよくないときは、被覆と筒体との間にホツトメルト接
着剤を介在させ、両者に溶着をより完全なものにでき
る。 また筒体に熱収縮性合成樹脂が用いられると、加熱に
際し筒体が収縮し、筒体と被覆層とがより密着に溶着さ
れる。 実施例 第１図は、本発明の基礎となる構成の断面図である。
流体を輸送する管体１は、長手体本体である鋼管２の外
周面にポリエチレンなどの熱可塑性合成樹脂材料から成
る被覆層３が形成されて構成される。管体１は、もう１
つの管体1aに接続され、対応する部分には同一の数字に
添字ａを付して示す。鋼管2,2aは、接続位置４において
溶接によつて気密に接続される。この接続される位置４
とその付近では、被覆層3,3aは除去されて鋼管2,2aが露
出されている。この露出している鋼管2,2aの部分と、そ
の付近の被覆層3,3aとに亘つて、それらの外周面には筒
体５がかぶせられて気密に被覆される。 筒体５は熱可塑性合成樹脂製であり、たとえばポリエ
チレンおよびポリプロピレンなどの材料から成る。筒体
５は、後述のようにして被覆層3,3aにそれぞれ気密に熱
溶着する。 第２図は第１図に示された構成の手順を示すための断
面図である。筒体５によつて、被覆層3,3aから露出して
いる鋼管2,2aの部分を被覆するにあたつては、まず第２
図（１）で示されるように鋼管2,2aの接続前に筒体５を
一方の管体１に挿通しておく。次に、第２図（２）に示
されるように管体1,1aの鋼管2,2aを溶接などによつて接
続する。その後、第２図（３）で示されるように鋼管2,
2aの接続位置４とその付近に亘つて筒体５を配置し、こ
の筒体５と被覆層3,3aとを熱溶着する。 第３図は筒体５と被覆層３とを熱溶着する工程を示す
断面図であり、第４図は導電体の各種の例を示す図であ
る。筒体５の内周面には、被覆層３と重なる長さl1に亘
つて導電体６が設けられる。この導電体６は、たとえば
炭素または金属などの導電性の繊維から成る。 導電体６は、たとえば第４図（１）で示されるように
細長い複数の導電性繊維７が、筒体５の軸線方向に沿つ
て配置された構成であつてもよく、あるいはまた第４図
（２）で示されるように長手導電性繊維８を編んだ網９
であつてもよく、さらにはまた第４図（３）で示される
ように、導電性の短い繊維10が粉末状となつて導電体６
を構成してもよい。導電体６は、筒体５の内周面に接着
剤を用いて接着され、または筒体５の内面付近に一体成
形され、あるいはまた筒体５および被覆層３とは個別
に、筒体５と被覆層３との間に介在されてもよい。 前述の第２図（３）で示されるように筒体５の端部が
被覆層3,3a上に配置された状態で、第３図に示されるよ
うに導電体６の軸線方向両端にリード線11,12または導
電体の端部などを介して電源13を接続し、導電体６を電
力付勢し、ジユール熱を発生させる。電源13には直列に
タイマ15が介在され、導電体６が電力付勢される時間が
設定される。導電体６が電力付勢されてジユール熱を発
生すると、被覆層３と筒体５とが軟化ないしは溶融して
気密に熱溶着することができる。もう１つの被覆層3aに
関しても、同様に筒体５との熱溶着が行われる。 筒体５は、熱収縮性を有するように構成してもよい。
これによつて導電体６が電力付勢されて高温度となつた
とき筒体５が収縮し、筒体５と被覆層3,3aとの熱溶着が
一層確実になる。 導電体６は、被覆層3,3aに重なる部分だけに設けられ
ていてもよいけれども、この導電体６は筒体５の軸線方
向全長に亘つて配置されていてもよい。 第５図は、本発明の他の基礎となる構成の筒体17の一
部の断面図である。筒体17は熱可塑性合成樹脂から成
り、その厚み方向の途中に導電体18が埋込まれた構成を
有する。 第６図は、本発明をさらに他の基礎となる構成の筒体
19の一部の断面図である。この構成では、熱可塑性合成
樹脂製筒体内に前述の第４図（３）で示された導電体の
短い繊維10が混在され、これによつて筒体19の全体が導
電性を有する。 第７図は、本発明のさらに他の基礎となる構成の被覆
層３と筒体20との熱溶着工程を示す断面図である。前述
の構成の対応する部分には、同一の参照符を付す。この
構成では、熱可塑性合成樹脂製筒体20内には、たとえば
ニクロム線などのような発熱線21がコイル状に形成され
て埋込まれている。発熱線21にリード線11,12およびタ
イマ15を介して電源13に接続することによつて発熱線21
が電力付勢されて発熱し、筒体20と被覆層３との熱溶着
が可能になる。 第８図は、本発明のさらに他の基礎となる構成の断面
図である。この構成は前述の第３図の構成に類似し、対
応する部分には同一の参照符を付す。注目すべきは、こ
の構成では管体１の被覆層３と筒体５との各材料が異な
つており、これら被覆層３と筒体５との直接的な熱溶着
時の強度が不充分である場合において、被覆層３と筒体
５との間にホツトメルト接着剤22を介在する。このホツ
トメルト接着剤22は、被覆層３との熱溶着によつて大き
な強度が得られ、またホツトメルト接着剤22と筒体５と
の熱溶着によつて大きな強度が得られる。このようなホ
ツトメルト接着剤22は、加熱によつて軟化または溶融
し、この状態で被覆層３および筒体５と熱溶着して接続
され、冷却によつて固化する。ホツトメルト接着剤22の
ベースポリマは、たとえばエチレン−酢酸ビニル共重合
体（略称EVA）などであつてもよい。 第９図は、本発明の一実施例の筒体23の斜視図であ
る。この筒体23は熱可塑性合成樹脂製であり、周方向に
分断されている。筒体23の周方向両端部には、係止片2
4,25が突設される。係止片24,25は、筒体23の軸線方向
に沿つて延びる係止部材26によつて係止される。この係
止部材26の軸直角断面はＣ字状であり、係止部材26に形
成されている係止孔27内に係止片24,25が嵌り込んで筒
体23の周方向の両端部が連結される。このような構成を
有する筒体23を用いることによつて、管体1,1aの鋼管2,
2aの溶接などによる接続後において、被覆層3,3aから露
出している鋼管2,2aの部分を筒体23で囲み、その後、係
止片24,25、係止部材26で連結すればよく、管体1,1aに
筒体23を外囲する作業が容易になる。筒体23の少なくと
も両端部には、第４図に示されるような各種の導電体が
設けられる。また導電体を設ける位置は、第３図に示す
ように筒体の内周面または第５図に示されるように筒体
の厚み方向途中であつてもよい。また導電体がニクロム
線のような発熱線であり、第７図のように電源に接続し
て電力付勢してもよい。また第８図に示すように筒体と
被覆層との間にホツトメルト接着剤を介在させてもよ
い。 本発明は、鋼管だけでなく、その他の長手体本体およ
び曲り体の炭素繊維による補強作用などするために被覆
を行うことができる。 効 果 以上のように本発明によれば、長手体本体の被覆層上
に筒体の両端部が来るようにかぶせた後、係止部材が筒
体の係止部に係止され、導電体に電力付勢されるので、
作業性が向上され、また各作業者毎の気密性などの品質
の差がなくなり、被覆層が除去されて露出している長手
体本体の部分およびその付近を気密的に被覆して保護す
ることが可能になる。しかも先行技術におけるバーナな
どを使用する必要がなく、安全性が向上される。
【図面の簡単な説明】 第１図は本発明の基礎となる構成の断面図、第２図は第
１図に示された構成の手順を示すための断面図、第３図
は筒体５と被覆層３との熱溶着工程を示す断面図、第４
図は本発明の筒体23に用いる導電体の各種の例を示す
図、第５図は本発明の他の基礎となる構成の筒体17の一
部の断面図、第６図は本発明のさらに他の基礎となる構
成の筒体19の一部の断面図、第７図は本発明のさらに他
の基礎となる構成の被覆層３と筒体20との熱溶着工程を
示す断面図、第８図は本発明のさらに他の基礎となる構
成の一部の断面図、第９図は本発明の一実施例の筒体23
の斜視図である。 1,1a……管体、2,2a……鋼管、3,3a……被覆層、４……
接続位置、6,18,31……導電体、23……筒体、24,25……
係止部、26……係止部材
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 105:02 Ｂ２９Ｌ 9:00 23:00 (56)参考文献 特開 昭51−136755（ＪＰ，Ａ) 特開 昭62−169618（ＪＰ，Ａ) 特開 昭50−108375（ＪＰ，Ａ)

Claims (1)

  1. (57)【特許請求の範囲】 １．長手体本体の外周面に熱可塑性合成樹脂製被覆層が
    形成されて構成された長手体および被覆層の施されてい
    ない曲り体などの被覆方法において、 長手体本体の外周面にかぶせられ、周方向に分断された
    熱可塑性合成樹脂材料で構成される筒体であつて、 周方向両端部に、軸線方向に延びて外部に突出した一対
    の係止部と、 少なくとも軸線方向両端部近傍に設けられる導電体とを
    有する筒体と、 筒体の軸線方向に延び、前記一対の係止部を係止する係
    止部材とを含み、 被覆層が除去されて露出している長手体本体の部分また
    は前記曲り体と、長手体本体の被覆層とに亘つて、被覆
    層を導電体のある部分に重ねてそれらの外周面に前記筒
    体をかぶせ、 一対の係止部を係止部材によつて係止し、 導電体を電力付勢してジユール熱によつて加熱し、被覆
    層と筒体とを熱溶着することを特徴とする長手体および
    曲り体の被覆方法。 ２．前記導電体は、導電性繊維あることを特徴とする特
    許請求の範囲第１項記載の長手体および曲り体の被覆方
    法。 ３．前記導電性繊維は、炭素繊維であることを特徴とす
    る特許請求の範囲第２項記載の長手体および曲り体の被
    覆方法。 ４．前記導電体は、発熱線であることを特徴とする特許
    請求の範囲第１項記載の長手体および曲り体の被覆方
    法。 ５．前記被覆層と筒体との間にホツトメルト接着剤を介
    在することを特徴とする特許請求の範囲第１項記載の長
    手体および曲り体の被覆方法。 ６．前記筒体は、熱収縮性を有することを特徴とする特
    許請求の範囲第１項記載の長手体および曲り体の被覆方
    法。
JP62301071A 1987-11-27 1987-11-27 長手体および曲り体の被覆方法 Expired - Lifetime JP2681069B2 (ja)

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JP2003106398A (ja) 2001-09-28 2003-04-09 Jatco Ltd トルクコンバータ
DE102017217294A1 (de) * 2017-09-28 2019-03-28 Airbus Operations Gmbh Verfahren zum Widerstandsschweißen von Faserverbundbauteilen zu einer Faserverbundstruktur, Faserverbundstruktur und Faserverbundbauteil

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JPS51136755A (en) * 1975-05-22 1976-11-26 Nippon Kokan Kk Anti corrosion coating method for joint section of coated steel pipe
JPS62169618A (ja) * 1986-01-21 1987-07-25 Showa Prod Kk 複合筒材の製造方法

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