JPH10281383A - 電気融着継手 - Google Patents

電気融着継手

Info

Publication number
JPH10281383A
JPH10281383A JP9093653A JP9365397A JPH10281383A JP H10281383 A JPH10281383 A JP H10281383A JP 9093653 A JP9093653 A JP 9093653A JP 9365397 A JP9365397 A JP 9365397A JP H10281383 A JPH10281383 A JP H10281383A
Authority
JP
Japan
Prior art keywords
electric
coupling
joint
tube
fusion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9093653A
Other languages
English (en)
Inventor
Nozomi Mitsusaka
望 三坂
Satoshi Shibazaki
智 芝崎
Norichika Oouchi
教親 大内
Hisashi Murata
尚志 村田
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP9093653A priority Critical patent/JPH10281383A/ja
Publication of JPH10281383A publication Critical patent/JPH10281383A/ja
Pending legal-status Critical Current

Links

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
    • 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
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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"
    • B29C65/3472—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
    • 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
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • 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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52294—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being heated
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/12—Thermoplastic materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Surface Heating Bodies (AREA)

Abstract

(57)【要約】 【課題】 使用中に亀裂が発生することなく、しかもガ
スや液体の浸透流出を抑制できる電気融着継手を提供す
る。 【解決手段】 融着接合される樹脂管２の管端部も融着
されるように電熱線（発熱体）３が管端部近傍域に配設
されていることを特徴とする電気融着継手１。

Description

【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明はポリエチレンやポリ
ブテンなどの熱可塑性樹脂でできた樹脂管同士を接続す
ための電気融着継手に関する。
【０００２】
【従来の技術】最近、軽量で、耐食性に優れ、可撓性が
あるため地震に強いなどの特徴を有するポリエチレンや
ポリブテン製の樹脂管がガス管や水道管に大量に用いら
れるようになってきた。
【０００３】こうした樹脂管同士を接続する方法の１つ
に、電気融着継手を用いる方法がある。
【０００４】図２に、従来のソケットタイプ電気融着継
手の１例の縦断面図を示す。図２で、１は電気融着継手
本体、２は樹脂管、３は電熱線、４は電極、５はストッ
パー、６はコールドゾーンを表す。
【０００５】樹脂管２を電気融着継手本体１に、樹脂管
２の先端面が電気融着継手本体１の中央部に設けられた
ストッパー５にあたるまで挿入し、電気融着継手本体１
の内面近傍に設けられた電熱線３に電極４より通電し、
電熱線３近傍にある電気融着継手本体１と樹脂管２の樹
脂を溶融させ電気融着継手本体１と樹脂管２を接合し
て、樹脂管２同士は接続される。このとき電熱線３は電
気融着継手本体１の軸方向全長にわたって配設されてな
いので、電気融着継手本体１の中央部や端部には樹脂管
と融着されてないいわゆるコールドゾーン６が存在す
る。
【０００６】電気融着継手で接続された樹脂管に一定圧
力でガスや水を流すと、樹脂管や継手にはクリープが起
こり、継手の中央部に存在するコールドゾーンでは樹脂
管と継手の非接合面が時間とともに開口し、その結果コ
ールドゾーンと融着部の境目に応力集中が起きて亀裂が
生じる場合がある。そのため、ＪＩＳ Ｋ６７７４には
熱間内圧クリープ試験が電気融着継手の品質管理試験項
目に取り上げられており、高い熱間内圧クリープ強度を
有する電気融着継手が望まれている。
【０００７】また、継手の中央部に存在するコールドゾ
ーンでは樹脂管と継手の非接合面の間にガスや液体が浸
入できるので、流通させたガスや液体の種類によっては
この部分から継手に浸透して外部へ流出する場合もあ
る。
【０００８】熱間内圧クリープ強度を向上させる方法と
して、実開昭６２ー１７２８９４号公報には、軸方向全
長にわたり継手外面に形状記憶合金からなる環状体を巻
き付ける方法が提案されている。またＤｕ Ｐｏｎｔ社
製電気融着継手には、継手と樹脂管の融着部より継手中
央部側の外面上に樹脂を含浸した長繊維からなるＦＲＰ
を巻き付けたものも商品化されている。
【０００９】
【発明が解決しようとする課題】しかしながら、実開昭
６２ー１７２８９４号公報に記載の方法やＤｕ Ｐｏｎ
ｔ社製電気融着継手のように、継手を外面側から補強し
ても、剛性の小さい熱可塑性樹脂は内圧によって管軸方
向に伸び肉厚方向に縮まるポアソン効果が大きいので、
継手内面の変形を完全に抑えることができず、コールド
ゾーンと融着部の境目に発生する亀裂を完全には防止で
きない。
【００１０】また、いずれの方法も、コールドゾーンに
おける樹脂管と継手の非接合面の間にガスや液体が浸入
できるので、ガスや液体の浸透流出の防止効果はない。
【００１１】本発明はこのような問題を解決するために
なされたもので、使用中に亀裂が発生することなく、し
かもガスや液体の浸透流出を抑制できる電気融着継手を
提供することを目的とする。
【００１２】
【課題を解決するための手段】上記課題は、融着接合さ
れる樹脂管の管端部も融着されるように発熱体が管端部
近傍域に配設されていることを特徴とする電気融着継手
により解決される。
【００１３】電気融着継手の発熱体を、融着接合される
樹脂管の管端部も融着されるように配設して融着を行え
ば、継手の中央部における樹脂管端部の非融着のコール
ドゾーンがなくなるので、クリープによる亀裂の発生を
防止できる。
【００１４】また、樹脂管と継手の融着により継手の中
央部の肉厚を増大できるので、ガスや液体の浸透流出を
抑制できる。
【００１５】管端部近傍域とは、発熱体の存在により加
熱溶融接続領域が管端部にまで及ぶ箇所までを意味し、
融着条件等によりその位置が異なる事は言うまでもな
い。
【００１６】さらに、発熱体はニクロム線等の電熱線や
炭素繊維等の導電性、誘導加熱発熱体があり、通常は電
熱線が好ましく使われる。
【００１７】
【発明の実施の形態】図１に、本発明の電気融着継手の
１実施の形態の縦断面図を示す。図１の番号は図２の番
号と同じものを表す。
【００１８】図２に示す電熱線３の配設を、電気融着継
手本体１のストッパー５まで延長し、さらに樹脂管２の
端面に接触するストッパー５の面近傍にも設けて融着接
合すれば、電気融着継手本体１の中心部における樹脂管
端部の非融着のコールドゾーンは生じない。したがっ
て、樹脂管と継手の非接合面が時間とともに開口して亀
裂が生じこともない。
【００１９】また、電気融着継手本体１の中心部の肉厚
は、継手と樹脂管の厚みの和となりガスや液体の浸透流
出に要する時間を長くできる、すなわち浸透流出を抑制
できることになる。
【００２０】
【発明の効果】本発明は以上説明したように構成されて
いるので、使用中に亀裂が発生することなく、しかもガ
スや液体の浸透流出を抑制できる電気融着継手を提供で
きる。
【図面の簡単な説明】
【図１】本発明の電気融着継手の１実施の形態の縦断面
図である。
【図２】従来のソケットタイプ電気融着継手の１例の縦
断面図である。
【符号の説明】
１ 電気融着継手本体 ２ 樹脂管 ３ 電熱線（発熱体） ４ 電極 ５ ストッパー ６ コールドゾーン
───────────────────────────────────────────────────── フロントページの続き (72)発明者 村田 尚志 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内

Claims (1)

    【特許請求の範囲】
  1. 【請求項１】 融着接合される樹脂管の管端部も融着さ
    れるように発熱体が管端部近傍域に配設されていること
    を特徴とする電気融着継手。
JP9093653A 1997-04-11 1997-04-11 電気融着継手 Pending JPH10281383A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9093653A JPH10281383A (ja) 1997-04-11 1997-04-11 電気融着継手

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9093653A JPH10281383A (ja) 1997-04-11 1997-04-11 電気融着継手

Publications (1)

Publication Number Publication Date
JPH10281383A true JPH10281383A (ja) 1998-10-23

Family

ID=14088350

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9093653A Pending JPH10281383A (ja) 1997-04-11 1997-04-11 電気融着継手

Country Status (1)

Country Link
JP (1) JPH10281383A (ja)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1105286A4 (en) * 1998-07-10 2002-07-10 Edison Welding Inst COVERING JOINTS AND JOINTS JOINTED PRODUCED SIMULTANEOUSLY
KR20030042773A (ko) * 2001-11-23 2003-06-02 이정현 신축성 파이프를 이용한 수지관 연결소켓의 제조방법 및구조
FR2853861A1 (fr) * 2003-04-15 2004-10-22 Volkswagen Ag Systeme de reservoir de carburant et procede de fabrication d'un systeme de reservoir de carburant
WO2009033603A1 (de) * 2007-09-07 2009-03-19 Egeplast Werner Strumann Gmbh & Co. Kg VERFAHREN ZUM VERSCHWEIßEN VON KUNSTSTOFFROHREN
JP2020091004A (ja) * 2018-12-06 2020-06-11 積水化学工業株式会社 電気融着継手、プラント用配管、および融着方法
JPWO2021065776A1 (ja) * 2019-09-30 2021-04-08
US11229913B2 (en) 2013-06-03 2022-01-25 Biolife Solutions, Inc. Cryogenic systems
JP2022034892A (ja) * 2020-08-19 2022-03-04 積水化学工業株式会社 融着方法および電気融着継手
JP2022142286A (ja) * 2021-03-16 2022-09-30 積水化学工業株式会社 接続方法および配管構造
US11754215B2 (en) 2020-07-20 2023-09-12 Saudi Arabian Oil Company Apparatus and method for friction welding of reinforced thermosetting resin pipe joints
US11761571B2 (en) 2020-07-20 2023-09-19 Saudi Arabian Oil Company Apparatus and method for electrofusion welding of reinforced thermosetting resin pipe joints
US11794418B2 (en) 2020-07-20 2023-10-24 Saudi Arabian Oil Company Apparatus and method for threaded-welded reinforced thermosetting resin pipe joints
US12055253B2 (en) 2020-12-17 2024-08-06 Saudi Arabian Oil Company Apparatus and method for bonding tie layers on reinforced thermosetting resin laminates for use in welding thermoset composite pipe joints
US12259075B2 (en) 2023-01-26 2025-03-25 Saudi Arabian Oil Company Method and system for automated installation of welded reinforced thermosetting resin pipe joints
US12276358B2 (en) 2023-02-03 2025-04-15 Saudi Arabian Oil Company Corrosion-free welded connection for reinforced thermoplastic pipes (RTP)
US12459212B2 (en) 2020-01-24 2025-11-04 Sekisui Chemical Co., Ltd. Electrofusion joint and fusion method

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US6596122B1 (en) 1998-07-10 2003-07-22 Edison Welding Institute, Inc. Simultaneous butt and lap joints
EP1105286A4 (en) * 1998-07-10 2002-07-10 Edison Welding Inst COVERING JOINTS AND JOINTS JOINTED PRODUCED SIMULTANEOUSLY
KR20030042773A (ko) * 2001-11-23 2003-06-02 이정현 신축성 파이프를 이용한 수지관 연결소켓의 제조방법 및구조
DE10317407B4 (de) * 2003-04-15 2016-03-17 Volkswagen Ag Verfahren zur Herstellung eines Kraftstofftanksystems
FR2853861A1 (fr) * 2003-04-15 2004-10-22 Volkswagen Ag Systeme de reservoir de carburant et procede de fabrication d'un systeme de reservoir de carburant
WO2009033603A1 (de) * 2007-09-07 2009-03-19 Egeplast Werner Strumann Gmbh & Co. Kg VERFAHREN ZUM VERSCHWEIßEN VON KUNSTSTOFFROHREN
US11229913B2 (en) 2013-06-03 2022-01-25 Biolife Solutions, Inc. Cryogenic systems
JP2020091004A (ja) * 2018-12-06 2020-06-11 積水化学工業株式会社 電気融着継手、プラント用配管、および融着方法
JPWO2021065776A1 (ja) * 2019-09-30 2021-04-08
WO2021065776A1 (ja) * 2019-09-30 2021-04-08 積水化学工業株式会社 電気融着継手
US12259076B2 (en) 2019-09-30 2025-03-25 Sekisui Chemical Co., Ltd. Electrofusion joint
CN114466987A (zh) * 2019-09-30 2022-05-10 积水化学工业株式会社 电熔接头
CN114466987B (zh) * 2019-09-30 2024-11-05 积水化学工业株式会社 电熔接头
TWI886150B (zh) * 2019-09-30 2025-06-11 日商積水化學工業股份有限公司 電熔合接頭及連接方法
US12459212B2 (en) 2020-01-24 2025-11-04 Sekisui Chemical Co., Ltd. Electrofusion joint and fusion method
TWI907379B (zh) * 2020-01-24 2025-12-11 日商積水化學工業股份有限公司 電熔接接頭、電熔接接頭之製造方法及連接方法
US11794418B2 (en) 2020-07-20 2023-10-24 Saudi Arabian Oil Company Apparatus and method for threaded-welded reinforced thermosetting resin pipe joints
US11761571B2 (en) 2020-07-20 2023-09-19 Saudi Arabian Oil Company Apparatus and method for electrofusion welding of reinforced thermosetting resin pipe joints
US11754215B2 (en) 2020-07-20 2023-09-12 Saudi Arabian Oil Company Apparatus and method for friction welding of reinforced thermosetting resin pipe joints
JP2022034892A (ja) * 2020-08-19 2022-03-04 積水化学工業株式会社 融着方法および電気融着継手
US12055253B2 (en) 2020-12-17 2024-08-06 Saudi Arabian Oil Company Apparatus and method for bonding tie layers on reinforced thermosetting resin laminates for use in welding thermoset composite pipe joints
JP2022142286A (ja) * 2021-03-16 2022-09-30 積水化学工業株式会社 接続方法および配管構造
JP2025019296A (ja) * 2021-03-16 2025-02-06 積水化学工業株式会社 接続方法
US12259075B2 (en) 2023-01-26 2025-03-25 Saudi Arabian Oil Company Method and system for automated installation of welded reinforced thermosetting resin pipe joints
US12276358B2 (en) 2023-02-03 2025-04-15 Saudi Arabian Oil Company Corrosion-free welded connection for reinforced thermoplastic pipes (RTP)

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