JPH0911332A - パイプの接続方法 - Google Patents

パイプの接続方法

Info

Publication number
JPH0911332A
JPH0911332A JP7168759A JP16875995A JPH0911332A JP H0911332 A JPH0911332 A JP H0911332A JP 7168759 A JP7168759 A JP 7168759A JP 16875995 A JP16875995 A JP 16875995A JP H0911332 A JPH0911332 A JP H0911332A
Authority
JP
Japan
Prior art keywords
pipe
cylindrical core
titanium oxide
oxide
inner circumference
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
JP7168759A
Other languages
English (en)
Inventor
Tadashi Asanuma
浅沼　　正
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP7168759A priority Critical patent/JPH0911332A/ja
Publication of JPH0911332A publication Critical patent/JPH0911332A/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
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1425—Microwave radiation
    • 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
    • B29C65/3412—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 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"
    • B29C65/3404—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
    • B29C65/3444—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 ribbon, band or strip
    • 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
    • B29C65/3484—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
    • B29C65/3496—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 with a coating, e.g. a metallic or a carbon 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
    • 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
    • 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
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements 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
    • B29C66/01—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
    • B29C66/50—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
    • 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
    • B29C66/739—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 material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91221—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/97—Checking completion of joining or correct joining by using indications on at least one of the joined parts
    • 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

(57)【要約】 【解決手段】熱可塑性樹脂からなるパイプを接続するに
際して、パイプの接続部において、パイプ１の外面に接
して設けられ、四三酸化鉄および／または針状酸化チタ
ンを含有しパイプと同質の材質からなる内周３を有し、
さらに外周から内周に向かって設けられた貫通しない穴
４を有し、しかも該穴４に発熱によって臭気を発する化
合物を存在せしめた、パイプと同質の材質からなる円筒
状のコア２を用い、マイクロ波を照射することによって
パイプを接続する。 【効果】容易にパイプを接続することができる。

Description

【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は特定の構造を有する
円筒状のコアを用いマイクロ波を照射することによって
パイプを接続する方法に関する。
【０００２】
【従来の技術】熱可塑性樹脂で成形されたパイプを接続
する方法については種々の提案がなされており、加熱融
着方法としてはニクロム線等の導電性のパターンを樹脂
中に埋め込み電流を流してジュール熱によって融着する
方法( 特公昭61-41293、特開昭64-74381等) と種々の電
磁波を吸収し熱に変換する物質を分散した樹脂を用い電
磁波の照射によって加熱する方法（特開平3-186690、特
開平2-261626等) がある。
【０００３】電磁波を用いる方法は、非接触状態で加熱
融着可能であり、接着用の治具の成形が簡便であるとい
う特徴を有する。
【０００４】
【発明が解決しようとする課題】電磁波を照射する方法
は上述のように利点を有するが実際に施工しようとする
と、電磁波が外に漏れないようにシールする必要があ
り、加熱融着したかどうかシールの外から判断するのが
困難であるという問題があった。
【０００５】
【課題を解決するための手段】本発明者らは上記問題を
解決して安価で簡便にパイプを接続する方法について鋭
意検討し本発明を完成した。
【０００６】即ち本発明は、熱可塑性樹脂からなるパイ
プを、接続部において該パイプの外面に接して設けられ
た円筒状のコアを用いマイクロ波を照射することによっ
て接続する方法において、該円筒状のコアが、四三酸化
鉄および／または針状酸化チタンを含有する、パイプと
同質の材質からなる内周を有し、外周から内周に向かっ
て設けられた貫通しない穴を有するものであり、しかも
該貫通しない穴に発熱によって臭気を発する化合物を存
在せしめたものであることを特徴とするパイプの接続方
法である。
【０００７】
【発明の実施の形態】本発明においてパイプを形成する
樹脂としては、熱可塑性であれば良く特に制限はなく具
体的には、ポリビニルアルコール、ポリ酢酸ビニル、ポ
リアミド、ポリエチレン、ポリプロピレン、あるいはエ
チレン、プロピレンなどの共重合体などのポリオレフィ
ン、ポリスチレン、ポリ塩化ビニル、ポリ塩化ビニリデ
ン、ポリメチルメタクリレート、あるいはスチレン、塩
化ビニル、メチルメタクリレート、塩化ビニリデンなど
の共重合体、ポリカーボネート、ポリアミド、ポリエス
テル、ポリイミド、ポリエーテル、ポリエーテルケト
ン、ポリエーテルエーテルケトンなどの縮合系のエンジ
ニアリングプラスチックなどどのようなものであっても
良い。
【０００８】熱可塑性樹脂のパイプの大きさ、形状、成
形方法についても、本発明の趣旨から明らかなように特
に制限はない。
【０００９】本発明において、四三酸化鉄としては市販
のものが利用可能であり、天然の磁鉄鉱を微粉砕したも
の、あるいは鉄を空気中で焼成したもの、酸化鉄(III）
を水蒸気を含む水素で還元したもの、赤熱した鉄に水蒸
気を作用させたものなどを微粉砕することで合成したも
のなどが例示できる。このような四三酸化鉄の粒径とし
ては１０００μm 以下、好ましくは０．０１〜１００μ
m 程度のものが好ましく利用される。
【００１０】針状の酸化チタンとしては市販のものが利
用可能であり、短軸の長さが０．０１〜１０μm 、アス
ペクト比が５〜１０００の針状の酸化チタンであり、マ
グネシウム、カルシウムなど他の金属酸化物がドープさ
れたもの、さらには酸化錫、酸化インジウム等をドープ
して導電性にしたものであっても良く市販されたものが
そのまま利用できる。酸化チタンの結晶形としてはルチ
ル型、アナターゼ型のどちらであっても良いが、微粒子
の形状が針状であることが必要である。
【００１１】本発明において、円筒状のコアの内周を形
成する熱可塑性樹脂中に前記の四三酸化鉄および／また
は針状酸化チタンを含有させる方法としては特に制限は
なく、よく混合できる方法であればどのような方法でも
良い。たとえば、ポリマーの溶液に四三酸化鉄および／
または針状酸化チタンを混合し、ボールミル、ホモジナ
イザーなど公知の混合方法でよく混合することで分散し
ついで後述の形状に成形乾燥することも可能であるが、
熱可塑性樹脂の粉末と四三酸化鉄および／または針状酸
化チタンを加熱溶融混合するのが好ましい。具体的には
熱可塑性樹脂と四三酸化鉄および／または針状酸化チタ
ンをヘンシェルミキサーなどで混合した後、押出機、ブ
ラベンダーなどで加熱溶融混合しついでペレット状とし
ておくと後述の円筒状のコアを成形するのが容易であ
る。
【００１２】ここで熱可塑性樹脂と四三酸化鉄および／
または針状酸化チタンの比率としては１００：１〜１０
０：５００（重量比）程度、好ましくは１００：１０〜
１００：２００（重量比）程度である。
【００１３】本発明における円筒状のコアの形状につい
て以下に説明する。図１はパイプの接続部の横断面図で
あり、１は接続するパイプの断面、２は円筒状のコアの
断面でありパイプと同質の材質からなる。３は四三酸化
鉄および／または針状酸化チタンを含有する部分であ
る。また４は、円筒状のコアの外周から内周に向かって
開けられた穴である。この穴の大きさは、臭いが外に出
てくる大きさであれば良く特に制限はないが、大きくて
も円筒状のコアの強度を損なわないものである必要があ
る。穴の深さは、深くても四三酸化鉄あるいは針状酸化
チタンを含有する層にぎりぎり達しない程度であるのが
一般的であり、好ましくは融着する際に望まれる加熱融
解される厚さの層が残る程度であるのが好ましい。
【００１４】本発明においてはこの穴の底に加熱によっ
て臭気を発する化合物を入れることでその部分にも熱が
伝達したことを知ることによって融着に必要な熱が発生
したかどうかを判断する。
【００１５】ここで加熱によって臭気を発する化合物と
しては、それ自身がマイクロ波を吸収して発熱するもの
でなければ良く特に制限はないが、好ましくは使用する
樹脂が融解する温度付近で臭気を発し、しかもその臭気
が毒性がなく嫌な臭いでないようなものである。臭気を
発する程度を制御するために他の物質、例えば樹脂とか
無機化合物などで希釈したり覆ったりする工夫をするこ
とができる。具体的には、種々の芳香剤として市販され
ているものがそのまま、あるいはさらに希釈して使用で
きる。
【００１６】図２はパイプの接続部の縦断面図であり１
〜３は図１と同じである。５は円筒状のコアの接続部を
表す。この例では該円筒状のコアの接続部を有するもの
が示されているが特にこれに限るものではない。この例
では円筒状のコアは５の部分で接続され、通常樹脂製の
ボルトで補強される。ボルトを締めつけた時、円筒状の
コアとパイプの外周が密着するように圧力が掛かるよう
にされる。
【００１７】上述のようにパイプと円筒状のコアを組み
立てたものに、ついでマイクロ波が照射される。マイク
ロ波としては家庭用の電子レンジとして市販されている
程度の波長、エネルギーで充分熱可塑性樹脂を融着する
程度に加熱可能であり、数ギガヘルツ（通常２．４５ギ
ガヘルツ）の周波数のマイクロ波が利用でき、数ＫＷ／
１Ｋｇ程度のエネルギーで充分である。
【００１８】
【実施例】以下に実施例を示しさらに本発明を説明す
る。
【００１９】実施例１ 四三酸化鉄（和光純薬（株）製試薬）１５ｇと日本石油
化学（株）製高密度ポリエチレン（銘柄名スタフレンＥ
７９２）２０ｇをラボプラストミルＲ型（東洋精機製作
所（株）製）で２４０℃で良く混合した。この操作を繰
り返して約１００ｇの混合物を得た。混合物を２２０℃
でプレス成形して厚さ１ｍｍのシートを作った。一方、
日本石油化学（株）製高密度ポリエチレン（銘柄名スタ
フレンＥ８０１）を同様にプレス成形して厚さ４ｍｍの
シートを得た。
【００２０】四三酸化鉄を混合したものを９０ｍｍ×１
６０ｍｍのシート状に切り出し、高密度ポリエチレンは
１００ｍｍ×１７０ｍｍに切り出し重ね２３０℃でプレ
ス成形して厚さ３ｍｍの複合シートとした。同様な操作
で作ったシートを真ん中で切断したところポリエチレン
部、四三酸化鉄含有部の厚さは２．４ｍｍ、０．８ｍｍ
の厚さであった。
【００２１】このシートを外径５０ｍｍ、厚さ５ｍｍの
パイプ（日本石油化学（株）製高密度ポリエチレン（銘
柄名スタフレンＥ８０１）で押出成形法で成形したも
の。）を覆うように内側を四三酸化鉄含有部として２４
０℃で加熱成形してパイプの外面に円筒状のコアを成形
した。また外側に内径５ｍｍで深さ２ｍｍの穴を４個あ
けた。この穴の底に、香料としてエチレンブラシレート
を０．１％の濃度となるようにポリエチレンワックスに
分散した成形物を密着させた。なおコアの接続部は約２
０ｍｍとしナイロン製のボルトで接続した。図１、２の
ようにセットしたものを市販の電子レンジ（東芝製東芝
電子レンジＥＲＴ−５４０Ｆ）に入れマイクロ波を照射
したところ、照射６分２０秒で急に臭気が強くなったの
でマイクロ波の照射をやめ取り出してボルトをはずした
ところ充分に接着していた。接続部にナイフを差し込み
抉ったが外れなかった。また接着した部分を輪切りにし
円筒状のコアとパイプの接着状態を観察したところ完全
に接着していた。
【００２２】
【発明の効果】本発明の方法を実施することで容易にパ
イプを接続でき工業的に極めて価値がある。
【図面の簡単な説明】
【図１】本発明における円筒状のコアを設けた、パイプ
の接続部の横断面図である。
【図２】本発明における円筒状のコアを設けた、パイプ
の接続部の縦断面図である。
【符号の説明】
１ 接続するパイプの断面 ２ 円筒状のコアの断面 ３ 四三酸化鉄および／または針状酸化チタンを含有す
る内周 ４ 円筒状のコアの外周から内周に向かって設けられた
穴 ５ 円筒状のコアの接続部

Claims (1)

    【特許請求の範囲】
  1. 【請求項１】熱可塑性樹脂からなるパイプを、接続部に
    おいて該パイプの外面に接して設けられた円筒状のコア
    を用いマイクロ波を照射することによって接続する方法
    において、該円筒状のコアが、四三酸化鉄および／また
    は針状酸化チタンを含有する、パイプと同質の材質から
    なる内周を有し、外周から内周に向かって設けられた貫
    通しない穴を有するものであり、しかも該貫通しない穴
    に発熱によって臭気を発する化合物を存在せしめたもの
    であることを特徴とするパイプの接続方法。
JP7168759A 1995-07-04 1995-07-04 パイプの接続方法 Pending JPH0911332A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7168759A JPH0911332A (ja) 1995-07-04 1995-07-04 パイプの接続方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7168759A JPH0911332A (ja) 1995-07-04 1995-07-04 パイプの接続方法

Publications (1)

Publication Number Publication Date
JPH0911332A true JPH0911332A (ja) 1997-01-14

Family

ID=15873914

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7168759A Pending JPH0911332A (ja) 1995-07-04 1995-07-04 パイプの接続方法

Country Status (1)

Country Link
JP (1) JPH0911332A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005010193A1 (de) * 2005-03-05 2006-09-07 Rehau Ag + Co Verfahren und Vorrichtung zum Verbinden von Rohren
WO2017106174A1 (en) 2015-12-14 2017-06-22 Wilmarc Holdings, Llc Laser induced sealing of concentrically layered materials

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005010193A1 (de) * 2005-03-05 2006-09-07 Rehau Ag + Co Verfahren und Vorrichtung zum Verbinden von Rohren
WO2017106174A1 (en) 2015-12-14 2017-06-22 Wilmarc Holdings, Llc Laser induced sealing of concentrically layered materials
EP3390879A4 (en) * 2015-12-14 2019-08-07 WilMarc Holdings, LLC LASER-INDUCED SEALING OF CONCENTRICALLY SHAPED MATERIALS
US10794523B2 (en) 2015-12-14 2020-10-06 Wilmarc Holdings, Llc Laser induced sealing of concentrically layered materials
AU2016370468B2 (en) * 2015-12-14 2022-02-10 Wilmarc Holdings Llc Laser induced sealing of concentrically layered materials
US11608926B2 (en) 2015-12-14 2023-03-21 Wilmarc Holdings, Llc Laser induced sealing of concentrically layered materials

Similar Documents

Publication Publication Date Title
CA2058335C (en) System and method for remotely heating a polymeric material to a selected temperature
US9205604B2 (en) Thermoplastic polymer powder
US3620876A (en) Liquid electromagnetic adhesive and method of joining materials thereby
US6023054A (en) High efficiency heating agents
US3574031A (en) Method of heat welding thermoplastic bodies using a stratum of susceptor material
Grimm Welding processes for plastics
JPH0911332A (ja) パイプの接続方法
CA1125155A (en) Method of fusion bonding non-elastomeric thermoplastic elements with a block structure elastomeric bonding element interposed at the bonding interface
JPH0861581A (ja) パイプの接続方法
JP3369000B2 (ja) パイプの接続方法
JP3369001B2 (ja) パイプの接続方法
JP3340254B2 (ja) パイプの接続方法
JPH0857961A (ja) パイプの接続方法
JP3340252B2 (ja) パイプの接続方法
JP3340256B2 (ja) パイプの接続方法
JPH0857962A (ja) パイプの接続方法
JPH07241912A (ja) パイプの接続方法
JP3765905B2 (ja) 樹脂成形物の融着方法
JPH07223265A (ja) パイプの接続方法
JPH07223266A (ja) パイプの接続方法
JPH07214669A (ja) パイプの接続方法
JPH07214668A (ja) パイプの接続方法
JPH10315336A (ja) 樹脂成形物の融着方法
JPH09136357A (ja) 熱可塑性樹脂の融着方法
JPH08103915A (ja) 加熱方法