JPH07145898A - 高周波誘電加熱融着接合用熱可塑性合成樹脂管 - Google Patents

高周波誘電加熱融着接合用熱可塑性合成樹脂管

Info

Publication number
JPH07145898A
JPH07145898A JP31575493A JP31575493A JPH07145898A JP H07145898 A JPH07145898 A JP H07145898A JP 31575493 A JP31575493 A JP 31575493A JP 31575493 A JP31575493 A JP 31575493A JP H07145898 A JPH07145898 A JP H07145898A
Authority
JP
Japan
Prior art keywords
synthetic resin
layer
thermoplastic synthetic
heat generating
pipe
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
JP31575493A
Other languages
English (en)
Inventor
Kotaro Shiozaki
孝太郎 塩崎
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.)
Fujipura Seiko Co Ltd
Original Assignee
Fujipura Seiko 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 Fujipura Seiko Co Ltd filed Critical Fujipura Seiko Co Ltd
Priority to JP31575493A priority Critical patent/JPH07145898A/ja
Publication of JPH07145898A publication Critical patent/JPH07145898A/ja
Pending 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
    • 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
    • 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"
    • B29C65/36—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" heated by induction
    • B29C65/3604—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" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3608—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" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B29C65/3612—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" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements comprising fillers
    • 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"
    • B29C65/36—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" heated by induction
    • B29C65/3604—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" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3608—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" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B29C65/3616—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" heated by induction characterised by the type of elements heated by induction 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"
    • B29C65/36—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" heated by induction
    • B29C65/3672—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" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3684—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" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being non-metallic
    • B29C65/3696—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" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being non-metallic with a coating
    • 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
    • B29C66/01—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
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt 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
    • B29C66/01—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
    • B29C66/01—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
    • 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
    • B29C66/5223—Joining tubular articles for forming corner connections or elbows, e.g. for making V-shaped pieces
    • B29C66/52231—Joining tubular articles for forming corner connections or elbows, e.g. for making V-shaped pieces with a right angle, e.g. for making L-shaped pieces
    • 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
    • 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
    • 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"
    • B29C65/36—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" heated by induction
    • B29C65/3668—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" heated by induction characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special induction coils
    • 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
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73751—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73755—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized
    • 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

Abstract

(57)【要約】 （修正有） 【目的】 この発明は高周波誘電加熱融着接合用熱可塑
性合成樹脂管に関するもので、他のプラスチック管との
接合を高周波発生装置を介して行いこれによってプラス
チック成型物を得ようとするものである。 【構成】 樹脂管１０は、熱可塑性合成樹脂あるいは架
橋ポリエチレン材の管体１表面に熱可塑性合成樹脂また
はこれと親和性のある異質材の混練材と誘電加熱の発熱
体で構成した粉粒体で形成した発熱層２を設け、必要に
応じてこの発熱層２の表面に熱可塑性合成樹脂または無
架橋ポリエチレンの保護層３を設けて構成されている。 【効果】 発熱層を管体表面に直接または保護層を介し
て形成したので、高周波発生装置を介して直接接合部位
の融着を行えるものである。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、高周波誘電加熱融着接
合用熱可塑性合成樹脂管の発明に係り、具体的にはこの
管を用いて、他のプラスチック管との接合を高周波電界
発生装置を介して行い、これによってプラスチック成形
物を得ようとするものである。
【０００２】
【従来の技術】プラスチック管は、現在その優れた性質
を生かしてエアー，油圧，水圧用配管，ガス配管，上下
水道管，温水配管，ケミカル溶液配管等の種々の配管材
として用いられている。これらのプラスチック管の接合
には、その材質により異なるが、種々の接合方法がある
が熱可塑性合成樹脂管については、熱融着法が最も優れ
ていると考えられる。
【０００３】然し、熱融着接合するためには、種々複雑
な工程を要していた。例えば、管体接合部表面を加熱溶
融させ同時に、継手内面も加熱溶融させて、加熱体を取
り除いて圧入して、冷却固化させて接合する方法とか、
継手の接合部内面に、電熱体を組み込んだものを成形し
（Ｅ・Ｆ継手）を用いて、管と継手を接合し、電流を流
して電熱体を急激に発熱層融着接合する方法である。
【０００４】
【発明が解決しようとする課題】従来のパイプ接合方法
は、上記の通りそのほとんどが、総べて管継手に創意工
夫がなされて来た。
【０００５】本発明は、パイプの製造時に高周波誘電発
熱層を形成することにより、管継手や成形品について
は、ごく一般のプラスチック成形方法で成形されたもの
を、高周波電界発生装置を用いて、融着接合を可能なら
しめ、管継手や他接合成形品の接合部位に特別の配慮す
ることなく、接合を可能にした合成樹脂管を提供しよう
とするものである。
【０００６】
【課題を解決するための手段】本発明は上記目的を達成
するため、押出成形機を２台以上の多数機を用いて、従
来のパイプ押出成形法を用いて、熱可塑性合成樹脂管を
連続成形する。詳しくは、原材料として主材の合成樹脂
と、主材と同質又は、親和性のある異質の合成樹脂材料
と、高周波誘電発熱材の短繊維または粉粒体との２種の
均一な混練された原料とからなり、この原料をそれぞれ
押出機より多層押出しダイにより、パイプ状に押し出し
て成形すればよい。
【０００７】この発明の基本構成を図１，図２および図
３により説明すれば次のとおりである。図１，図３はこ
の発明の基本構成を示したもので、符号１０は高周波誘
電加熱融着接合用熱可塑性合成樹脂管を示したもので、
１は管体、２は高周波誘電発熱層を示し、図３の符号３
は保護層を表わしている。
【０００８】管体１は熱可塑性合成樹脂材で成形されて
おり、発熱層２は図２で示すように管体形成材料と同質
または親和性のある異質の材料２１と誘電性の発熱体で
構成した短繊維または粉粒体２２とを混練して形成され
ており、管体の表面に形成されている。保護層３は管体
と同質または親和性のある異質の材料の熱可塑性合成樹
脂材であり、発熱層２の表面を被覆している。
【０００９】発熱層２中の発熱材の短繊維または粉粒対
２２の粒度は、高周波加熱機能を有する発熱材として高
周波誘電加熱機能を有する誘電率の高いものであればよ
く、一般的には各種樹脂の強化と、成形性を考慮して、
０．２〜１００マイクロメーター程度のものがあれば好
ましい。又、発熱層２の厚さは、管体の肉厚直径等に適
応させた任意の形状が選べるものであり、発熱材の混合
比も、１対１の重量比で充分である。
【００１０】発熱材として最も良好なものの１つに、酸
化亜鉛（ＺｎＯ）ウィスカがあり、このウィスカは、強
酸、強アルカリ以外、化学的に安定であり、耐熱性も優
れている。また発熱材としては、酸化マグネシウム，酸
化硅素などがある。
【００１１】又、粉粒体の形状であるが、多角形のもの
が良い場合と球状形のものが良い場合がある。直管で使
用される外圧の少ない場所での使用は、多角形の粉粒体
が良い。ベント管や曲げ加工をして使用する場合は、球
状形の粉粒体が望ましい。この粉粒体の選択は、パイプ
の強度に配慮したものであり、パイプの剛性を必要とす
るものは、多角形パイプの柔軟性やフレキシブル性や耐
寒性を重視する場合は、球状形のものが望ましい、多角
形状のものよりノッチ効果を低減出来るからである。こ
のことは従来の強化プラスチックの充填剤の処方で明ら
かである。
【００１２】また、図８から明らかなように高周波電界
発生装置Ａは商用周波電力を用い、この電力を整流器、
高周波インバータ（高周波電源）Ｈを介して加熱電極Ｅ
より高周波電界を照射するものである。
【００１３】架橋ポリエチレン管に適用する場合につい
て説明すれば次のとおりである。パイプは多種類にわた
って、ほとんどの熱可塑性合成樹脂管が作られている
が、現在、架橋ポリエチレン管がガス配管，温水配管，
パイプヒーテンクによる。
【００１４】建物の床暖房用として使われているが、こ
の架橋ポリエチレン管は一般ポリエチレン管のように、
又、他の熱可塑性合成樹脂管の如く、簡単に熱融着接合
が不可能である。分子間が架橋剤を介して、架橋結合さ
せているため、耐熱性，耐薬品性，機械的強度は向上す
るが、加熱してもゲル化は進行しても良く溶融せず、し
たがって熱融着接合が不充分である。
【００１５】よって、熱融着層を形成して、その部位の
接合を行っている。即ち、二層構造にする供押出成形を
した後、一般的には水架橋を施して成形している。出来
上ったパイプは架橋ポリエチレンと無架橋，一般ポリエ
チレン層との一体二重構造となって居り、その管継手に
ついても同じ配慮が必要である。
【００１６】本発明もそのために管体内部の各層は、管
体は架橋ポリエチレン部であり、中間部は高周波誘電発
熱層であり、外層部は一般無架橋ポリエチレン層とする
必要がある。この一般無架橋ポリエチレン層が熱融着接
合の役目を果たすのである。
【００１７】又、これと同じパイプを提供しようとす
る、もう一つの重要な理由は、三層にしたのは発熱層を
保護する目的と、パイプの発熱層の発熱材の混入による
ことで、その部位の材質の強度が低下するので（特にノ
ッチ効果により引張り破弾強度）や、圧縮破弾時のパイ
プ表面の亀裂等の防止効果のために管体内層部位を同質
の外層部を形成するものである。又、発熱材の短繊維ま
たは粉粒体はほとんど発熱層を形成する樹脂でマスキン
グ保護されるが、使用中又は運搬中に外部圧力でその短
繊維または粉粒体が露出した場合、薬品等で劣化するの
を防止する目的である。
【００１８】
【実施例】この発明の実施例を添付図面を参照しながら
説明すれば次のとおりである。図４はこの発明に係る合
成樹脂管どうしの接合を示したもので、前記両樹脂管１
０，１０を接続体３０内に突き合せ状に位置させ、高周
波電源Ｈと電界発生電極（加熱電極）Ｅを有する高周波
電界発生装置Ａを作動して、この発生装置より発生する
高周波電界によって高周波誘電発熱層２を加熱し、前記
接続体３０と管体の熱可塑性合成樹脂を溶融一体下さ
せ、一体化させた後、冷却することによって両管を融着
接合するものである。
【００１９】（他の実施例）この実施例は管体が架橋ポ
リエチレンから構成している場合に、適用されるもので
あり、その基本構成を図５および図６により説明すれば
次のとおりである。
【００２０】両図中の符号１０はいずれもこの発明に係
る合成樹脂管であり、管体１は架橋ポリウレタンを主材
として形成されている。発熱層２は先に説明したように
熱可塑性合成樹脂材またはこれと親和性のある異質の材
料と誘電加熱の発熱体で構成した短繊維または粉粒体と
を混練して形成されており、管体表面に形成されてい
る。
【００２１】図５は前記した発熱層２の表面に無架橋ポ
リエチレンを融着層３として形成したものである。図６
は発熱層２の表面に熱可塑性合成樹脂材等の溶着材を保
護融着層３として形成したものである。
【００２２】図７はこの発明に係る樹脂管１０とＬ字継
手３０との接合方法を示したもので、先の実施例と同じ
ように高周波電界発生装置Ａによって両者を融着接合す
るものである。なお、この実施例は管体主材が架橋ポリ
ウレタンであり、保護融着層３を融着材として利用する
ものである。
【００２３】
【発明の効果】この発明は管体表面に誘電加熱の発熱材
で構成した短繊維または粉粒体と管体材料の熱可塑性合
成樹脂と同質または親和性のある異質材の混練材で形成
した発熱層を設けたので、この合成樹脂管どうしあるい
は他のプラスチック成型品との接合を高周波電界発生装
置を介して直接接部位の溶融を行うことができ、その後
の冷却工程を経て両部材の接合を行なえるものである。
【００２４】また、この発明は発熱層表面に保護層を設
けることによって防錆と接続部位の溶融化と強度を増加
させることができる。その上この発明は架橋ポリエチレ
ン層で管体が形成されている場合でも保護層を無架橋ポ
リエチレン材で形成することで熱可塑性合成樹脂管と同
じような接合方法が適用できるものである。
【図面の簡単な説明】
【図１】この発明に係る合成樹脂管の基本構成の要部断
面図である。
【図２】発熱層の断面説明図である。
【図３】この発明に係る合成樹脂管の要部断面図であ
る。
【図４】この発明に係る実施例の断面説明図である。
【図５】この発明に係る他の実施例の基本構成の要部断
面図である。
【図６】この発明に係る他の実施例の要部断面図であ
る。
【図７】この発明の他の実施例の適用断面図である。
【図８】高周波電界発生装置の作動説明図である。
【符号の説明】
１ 管体 ２ 発熱層 ３ 保護融着層 １０ この発明の合成樹脂管 ２１ 合成樹脂 ２２ 短繊維または粉粒体 ３０ 接続体（継手） Ａ 高周波電界発生装置 Ｈ 高周波電源 Ｅ 加熱電極
───────────────────────────────────────────────────── 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 23:00 105:16 Ｂ２９Ｌ 9:00 23:00

Claims (2)

    【特許請求の範囲】
  1. 【請求項１】 熱可塑性合成樹脂管の管体の中間最外層
    部に、高周波誘電発熱性材料の短繊維または粉粒体を主
    成分とする発熱材と、管体形成材料と同質または親和性
    のある異質材の混練材とで形成された発熱層を管体の長
    さ方向の全長にわたって形成したことを特徴とする高周
    波誘電発熱層を有する高周波誘電加熱融着接合管。
  2. 【請求項２】 請求項１の発熱層を保護し、更に熱融着
    接合を容易ならしめるため、管体発熱層の外面に管体と
    同質または親和性のある異質の熱可塑性合成樹脂で被覆
    されたことを特徴とする多層一体構造の高周波誘電発熱
    層を有する高周波誘電加熱融着接合管。
JP31575493A 1993-11-24 1993-11-24 高周波誘電加熱融着接合用熱可塑性合成樹脂管 Pending JPH07145898A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31575493A JPH07145898A (ja) 1993-11-24 1993-11-24 高周波誘電加熱融着接合用熱可塑性合成樹脂管

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31575493A JPH07145898A (ja) 1993-11-24 1993-11-24 高周波誘電加熱融着接合用熱可塑性合成樹脂管

Publications (1)

Publication Number Publication Date
JPH07145898A true JPH07145898A (ja) 1995-06-06

Family

ID=18069149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31575493A Pending JPH07145898A (ja) 1993-11-24 1993-11-24 高周波誘電加熱融着接合用熱可塑性合成樹脂管

Country Status (1)

Country Link
JP (1) JPH07145898A (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0875362A3 (de) * 1997-05-02 1998-12-23 Hüls Aktiengesellschaft Mittels HF-Schweissen hergestellte Verbindung zwischen Rohr und Anbindungselement
JP2001171007A (ja) * 1999-12-20 2001-06-26 Solar Giken:Kk 熱可塑性樹脂よりなる小口径管の熱融着接合法
EP1510746A1 (en) * 2003-08-26 2005-03-02 Glynwed Pipe Systems Limited Method for joining multi-layered pipe
JP2006292111A (ja) * 2005-04-13 2006-10-26 Buyou Gas Kk 合成樹脂管の接続工法
JP2020070366A (ja) * 2018-10-31 2020-05-07 リンテック株式会社 高周波誘電加熱接着シート、管の接合方法及び管接合体

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0875362A3 (de) * 1997-05-02 1998-12-23 Hüls Aktiengesellschaft Mittels HF-Schweissen hergestellte Verbindung zwischen Rohr und Anbindungselement
JP2001171007A (ja) * 1999-12-20 2001-06-26 Solar Giken:Kk 熱可塑性樹脂よりなる小口径管の熱融着接合法
EP1510746A1 (en) * 2003-08-26 2005-03-02 Glynwed Pipe Systems Limited Method for joining multi-layered pipe
JP2006292111A (ja) * 2005-04-13 2006-10-26 Buyou Gas Kk 合成樹脂管の接続工法
JP4583226B2 (ja) * 2005-04-13 2010-11-17 武陽ガス株式会社 合成樹脂管の接続工法
JP2020070366A (ja) * 2018-10-31 2020-05-07 リンテック株式会社 高周波誘電加熱接着シート、管の接合方法及び管接合体

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