JPH01141026A - 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
JPH01141026A
JPH01141026A JP62301071A JP30107187A JPH01141026A JP H01141026 A JPH01141026 A JP H01141026A JP 62301071 A JP62301071 A JP 62301071A JP 30107187 A JP30107187 A JP 30107187A JP H01141026 A JPH01141026 A JP H01141026A
Authority
JP
Japan
Prior art keywords
cylindrical body
coating layer
conductor
covering
bodies
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
JP62301071A
Other languages
English (en)
Other versions
JP2681069B2 (ja
Inventor
Akio Nakashiba
中芝　明雄
Hiroyuki Nishimura
寛之 西村
Masushi Nishino
西野　益司
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)

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。

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、溶接によってまたはねじなどによって接続する
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
１寸けて保護しており、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７１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、したがって危険である。
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、 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
は被覆層の施されていない曲り体の部分と被覆層とに亘
ってそれらの外周面に熱可塑性き成樹脂製筒体をかぶせ
、 その筒体の少なくとも被覆層に重なる部分には導電体が
設けられ、 導電体を電力付勢して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′ｆｌ！ｉ覆方法で
ある。
好ましい実施態様では、前記導電体は、導電性繊維であ
ることを特徴とする。
また好ましい実施態様では、前記導電体は、炭素繊維で
あることを特徴とする。
さらに好ましい実施態様では、前記導電体は、発熱線で
あることを特徴とする。
さらにまた好ましい実施態様では、前記被覆層と筒体と
の間にホットメルト接着剤を介在することを特徴とする
。
また好ましい実施態様では、前記筒体は、熱収縮性を有
することを特徴とする。
さらにまた好ましい実施態様では、前記筒体は、周方向
に分断されており、巻付けて周方向に無端状とすること
を特徴とする。
作　　用 本発明に従えば、熱可塑性合成樹脂製筒体の少なくとも
被覆層に重なる部分には導電体が設けられており、した
がってこの導電体を電力付勢すると、導電体がジュール
熱を発生し、筒体と被覆層とが相互に熱溶着して気密的
に接続される。こうして被覆層で覆われている長手体本
体および曲り体の炭素繊維による補強作用が行われる。
実施例 第１図は、本発明の一実施例の断面図である。
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１寸して示す。
鋼管２．２ａは、接続位置４において溶接によって気密
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ＮＩ３，３ａは除去されてＭ４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とに亘って、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図に示された実施例の手順を示すための断
面図である。筒体５によって、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っては、
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０次に、第２
図（２）に示されるように管体１．１ａの鋼管２，２ａ
を溶接などによって接続する。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
亘って筒体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Ｉ！１に
亘って導電体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の軸線方向に沿って
配置された構成であってもよく、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！ｌ！
Ｉっであってもよく、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が粉末状となって導
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２１Ｊ（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、ジュール熱を発生させる。電源１
３には直列にタイマ１５が介在され、導電体６が電力は
勢される時間が設定される。導電体６が電力付勢されて
ジュ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
れによって導電体６が電力は勢されて高温度となったと
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
方向全長に亘って配置されていてもよい。
第５図は、本発明の池の実施例の筒体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、本発明のさらに他の実施例の筒体１つの一部
の断面図である。この実施例では、熱可塑性き成樹脂製
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、これによって筒体１つの全体が導電
性を有する。
第７図は、本発明のさらに他の実施例の被覆層３と筒体
２０との熱溶着工程を示す断面図である。
前述の実施例の対応する部分には、同一の参照符をけす
。この実施例では、熱可ジ性合成樹脂製筒体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０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
ることによって発熱線２１が電力付勢されて発熱し、同
体２ｏと被覆層３との熱溶着が可能になる。
第８図は、本発明のさらに池の実施例の断面図である。
この実施例は前述の第３図の実施例に類似し、対応する
部分には同一の参照符を付す。注目すべきは、この実施
例では管体１の被覆層３と筒体５との各材料が異なって
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
の間にホットメルト接着剤２２を介在する。このホット
メルト接着剤２２は、被覆層３との熱溶着によって大き
な強度が得られ、またホットメルト接着剤２２と筒体５
との熱溶着によって大きな強度が得られる。このような
ホットメルト接着剤２２は、加熱によって軟化または溶
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、冷却によって固化する。ホットメルト接着剤２
２のベースボリマは、たとえばエチレン−酢酸ビニル共
重合体（略称ＥＶＡ）などであってもよい。
第９図は、本発明の他の実施例の筒体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の両端部には、係止片２４
．２５が突設される。係止片２４．２５は、筒体２３の
軸線方向に沿って延びる係止部材２６によって係止され
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
よって、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には
、前述の実施例と同様に導電体２２が設けられる。
第１０図は本発明のさらに他の実施例の筒体２８の斜視
図であり、第１１図はこの筒体２８によって管体１を被
覆した状態を示す軸直角断面図である。この同体２８は
熱可塑性合成樹脂から成り、周方向分断されており、そ
の周方向の端部は参照符２９．３０で示される。筒体２
８の内周面には、導電体３１が設けられる。管体１，１
ａの鋼管２゜２ａを溶接などによって接続した後に筒体
２８をかぶせ、導電体３１を電力付勢することによって
筒体２８と被覆層３とが熱溶着されるとともに、その筒
体２８の周方向両端部２９．３０もまた熱溶着される。
上述の各実施例では、筒体５と被覆層３との熱溶着に関
して主として説明を行ったけれども、もう１つの被覆層
３ａとの熱溶着も全く同様である。
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、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図は本発明の一実施例の断面図、第２図は第１図に
示された実施例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
導電体の各種の例を示す図、第５図は本発明の他の実施
例の筒体１７の一部の断面図、第６図は本発明の他の実
施例の筒体１９の一部の断面図、第７図は本発明のさら
に他の実施例の被覆層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実施例の一部の
断面図、第９図は本発明の他の実施例の筒体２３の斜視
図、第１０Ｉ２１は本発明の池の実施例の筒体２８の斜
視図、第１１図は第１０図に示された筒体２８によって
管体１を被覆した状態を示す軸直角断面図である。 １．１ａ・・・管体、２，２ａ・・・鋼管、３．３ａ・
・・被覆層、４・・・接続位置、５，１７，１９，２０
゜２３．２８・・・筒体、６，１８．３１・・・導電体
、１３・・・電源、２１・・・発熱線、１５・・・タイ
マ代理人　　弁理士　西教　圭一部 第１図 第３図 ｆｓ　２　図 第４　図 第　５　図 Ｍ　６図 第　７　図 第８図 第　９図 第１０図

Claims (7)

    【特許請求の範囲】
  1. （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、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被覆層の施さ
    れていない曲り体の部分と被覆層とに亘つてそれらの外
    周面に熱可塑性合成樹脂製筒体をかぶせ、 その筒体の少なくとも被覆層に重なる部分には導電体が
    設けられ、 導電体を電力付勢して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. （２）前記導電体は、導電性繊維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。
  3. （３）前記導電体は、炭素繊維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。
  4. （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. （５）前記被覆層と筒体との間にホットメルト接着剤を
    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. （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。
  7. （７）前記筒体は、周方向に分断されており、巻付けて
    周方向に無端状と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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JP62301071A JP2681069B2 (ja) 1987-11-27 1987-11-27 長手体および曲り体の被覆方法

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JPH01141026A true JPH01141026A (ja) 1989-06-02
JP2681069B2 JP2681069B2 (ja) 1997-11-19

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1298352A2 (en) 2001-09-28 2003-04-02 JATCO Ltd Torque converter
DE102017217294A1 (de) * 2017-09-28 2019-03-28 Airbus Operations Gmbh Verfahren zum Widerstandsschweißen von Faserverbundbauteilen zu einer Faserverbundstruktur, Faserverbundstruktur und Faserverbundbauteil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1298352A2 (en) 2001-09-28 2003-04-02 JATCO Ltd Torque converter
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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JP2681069B2 (ja) 1997-11-19

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