JPH0724917A - Thermoplastic synthetic resin tube for joining by high frequency induction heating fusion welding - Google Patents
Thermoplastic synthetic resin tube for joining by high frequency induction heating fusion weldingInfo
- Publication number
- JPH0724917A JPH0724917A JP5192692A JP19269293A JPH0724917A JP H0724917 A JPH0724917 A JP H0724917A JP 5192692 A JP5192692 A JP 5192692A JP 19269293 A JP19269293 A JP 19269293A JP H0724917 A JPH0724917 A JP H0724917A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- pipe
- layer
- induction heating
- thermoplastic synthetic
- 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
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
- B29C65/34—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
- B29C65/3672—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
- B29C65/3676—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 metallic
- B29C65/368—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 metallic with a polymer 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
- B29C65/02—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
- B29C66/5221—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
- B29C66/5223—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
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高周波誘導加熱融着接
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。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an invention of a thermoplastic synthetic resin pipe for high-frequency induction heating fusion bonding, and more specifically, using this pipe, a high-frequency generator for joining with other plastic pipes. It is intended to obtain a plastic molded product.
【０００２】[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。2. Description of the Related Art Currently, plastic pipes are used as various pipe materials such as air, hydraulic pressure, water pressure pipes, gas pipes, water and sewer pipes, hot water pipes, and chemical solution pipes by taking advantage of their excellent properties. Although there are various joining methods for joining these plastic pipes depending on the material, the heat fusion method is considered to be the best for the thermoplastic synthetic resin pipe.
【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。However, in order to perform the heat fusion bonding, various complicated steps were required. For example, a method of heating and melting the surface of the pipe joint portion, simultaneously heating and melting the joint inner surface, removing the heating body, press-fitting, cooling and solidifying, and joining.
A method in which a pipe and a joint are joined to each other by forming an electric heating element incorporated on the inner surface of the joint of the joint (the E / F joint) and a current is passed to rapidly fuse the electric heating element by fusion bonding. is there.
【０００４】[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。As described above, most of the conventional pipe joining methods have been devised for pipe fittings.
【０００５】本発明は、パイプの製造時に高周波誘導発
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、高周波誘導加熱装置を用いて、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。According to the present invention, by forming a high frequency induction heating layer at the time of manufacturing a pipe, pipe fittings and molded products molded by a general plastic molding method can be manufactured using a high frequency induction heating device. It is an object of the present invention to provide a synthetic resin pipe which enables fusion bonding and enables joining without special consideration for the joint portion of a pipe joint or other joint molded product.
【０００６】[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、高周波誘導発熱材の粉粒体との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。In order to achieve the above-mentioned object, the present invention uses two or more extruders to continuously produce a thermoplastic synthetic resin pipe by a conventional pipe extrusion method. Mold. More specifically, two kinds of uniform kneading were performed as a raw material, that is, a synthetic resin as a main material, a synthetic resin material having the same or different affinity as the main material, and a granular material of a high frequency induction heating material. It is composed of a raw material, and the raw material may be extruded into a pipe shape by a multi-layer extrusion die from an extruder and molded.
【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
導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は発熱層を示し、図３の符号３は保護層を
表わしている。The basic structure of the present invention will be described below with reference to FIGS. 1, 2 and 3. 1 and 3 show the basic structure of the present invention, and reference numeral 10 shows a thermoplastic synthetic resin pipe for high-frequency induction heating fusion bonding,
Reference numeral 1 denotes a tubular body, 2 denotes a heat generating layer, and reference numeral 3 in FIG. 3 denotes a protective layer.
【０００８】管体１は熱可塑性合成樹脂材で成型されて
おり、発熱層２は図４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。The tubular body 1 is molded from a thermoplastic synthetic resin material, and the heat generating layer 2 is composed of a material 21 which is the same as or different from the tubular body forming material, and a dielectric heating element, as shown in FIG. It is formed by kneading the formed powder particles 22 and is formed on the surface of the tubular body. The protective layer 3 is a thermoplastic synthetic resin material which is the same material as or different material with affinity for the tubular body,
The surface of the heat generating layer 2 is covered.
【０００９】発熱材料は、導電体，磁性体であれば一般
的には高周波誘導加熱が可能であるが、熱可塑性合成樹
脂を加熱するのには、安価で最も発熱効率の良い鉄（Ｆ
ｅ）が最も良い。それも純鉄粉か（Ｆｅ2 Ｏ3 ）の酸化
鉄が良い。発熱体の粒度については、粒度が大きい粒発
熱効果は大であるが、パイプの成形用としては０．０１
〜１．００ｍｍの範囲で充分である。Generally, if the heat generating material is a conductor or a magnetic substance, high frequency induction heating is possible. However, for heating a thermoplastic synthetic resin, iron (F) having the highest heat generating efficiency is used.
e) is the best. It is also good to use pure iron powder or (Fe 2 O 3 ) iron oxide. Regarding the particle size of the heating element, the particle size is large and the particle heating effect is large, but it is 0.01 for pipe molding.
A range of up to 1.00 mm is sufficient.
【００１０】パイプの肉厚２ｍｍ以下であれば、０．０
５ｍｍ以下が望ましい。これはパイプの内外面の表面仕
上りにあまり大きい粒度のものは成形に好ましくないか
らである。If the wall thickness of the pipe is 2 mm or less, 0.0
5 mm or less is desirable. This is because that the surface finish of the inner and outer surfaces of the pipe having too large a grain size is not preferable for molding.
【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。Regarding the shape of the powder or granule, there are cases where a polygonal shape is preferable and a spherical shape is preferable. For use in places where the external pressure is low, such as straight pipes, polygonal particles are preferable. When using a bent pipe or bent,
Spherical particles are desirable. This powder or granular material is selected in consideration of the strength of the pipe. If the rigidity of the pipe is required, if the flexibility and flexibility of the polygonal pipe and cold resistance are important, the spherical shape is selected. Is preferable, because the notch effect can be reduced as compared with the polygonal shape.
This is evident in the conventional filler formulation of reinforced plastics.
【００１２】高周波誘導加熱装置について、従来は発信
器に真空管を用いていた。現在でも大出力のものは、真
空管方式であるが、最近トランジスターを用いた発信器
が開発され、除々にではあるが、大出力のトランジスタ
ー発信装置による高周波誘導加熱装置が開発実用化され
て来ている。With respect to the high-frequency induction heating device, conventionally, a vacuum tube has been used as a transmitter. The high output type is still a vacuum tube type, but recently a transmitter using a transistor has been developed, and gradually, a high frequency induction heating device using a high output transistor transmitting device has been developed and put into practical use. There is.
【００１３】電磁調理器と呼ばれるものが家庭用電化製
品として、例えば高周波誘導加熱方式による、ＩＨ電磁
炊飯器などである。トランジスタによる発信装置は、真
空管発信装置より小型，軽量に設計出来るので、従来の
真空管発信装置より軽量で運搬が容易で、低価格で提供
可能でありしかも電気消費効率も良いので、今後この種
の高周波誘導加熱方式による加熱方法は、高周波誘電加
熱方式（電子レンジ）に並んで、瞬時に加熱が可能であ
ることからその応用は急速に進歩するものと思考され
る。A household electric appliance called an electromagnetic cooker is, for example, an IH electromagnetic rice cooker using a high frequency induction heating system. Since the transmitter using a transistor can be designed to be smaller and lighter than the vacuum tube transmitter, it is lighter in weight than the conventional vacuum tube transmitter, easy to carry, can be provided at a low price, and has good electricity consumption efficiency. The heating method using the high-frequency induction heating method is considered to be rapidly advanced in application because it can be heated instantaneously along with the high-frequency dielectric heating method (microwave oven).
【００１４】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。The case of application to a crosslinked polyethylene pipe will be described below. Most of the thermoplastic synthetic resin pipes are made over many types of pipes, but currently, cross-linked polyethylene pipes are used for gas pipes, hot water pipes,
Depends on pipe heat tent.
【００１５】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。Although it is used for floor heating of buildings, this cross-linked polyethylene pipe, like general polyethylene pipe,
Further, unlike other thermoplastic synthetic resin pipes, it is impossible to easily perform heat fusion bonding. Since the molecules are cross-linked through a cross-linking agent, heat resistance, chemical resistance, and mechanical strength are improved, but they do not melt well even when heated and gelation progresses. Insufficient bonding.
【００１６】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。Therefore, the heat-sealing layer is formed and the portion is joined. That is, after the extrusion molding having a two-layer structure, water-crosslinking is generally performed. The finished pipe has an integral double structure of cross-linked polyethylene, non-cross-linked, and general polyethylene layer, and the same consideration must be given to its pipe joint.
【００１７】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、中間部は高周波誘導発
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。For the present invention, therefore, it is necessary for each layer inside the tubular body that the tubular body is a crosslinked polyethylene portion, the middle portion is a high frequency induction heating layer, and the outer layer portion is a general non-crosslinked polyethylene layer. This general non-crosslinked polyethylene layer plays the role of thermal fusion bonding.
【００１８】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、鉄の粉粒体はほと
んど発熱層を形成する樹脂で、マスキング保護され錆等
の発生は防止出来るが、使用中又は運搬中に外部圧力で
その粉粒体が露出した場合、空気や薬品等で錆の発生を
防止する目的である。Another important reason for providing the same pipe as this is that the three layers are for the purpose of protecting the heat generating layer and because the heat generating material is mixed in the heat generating layer of the pipe. Since the strength of the material of the part decreases (especially tensile burst strength due to the notch effect), the outer layer part of the same quality is formed in the inner layer part of the pipe for the effect of preventing cracks on the pipe surface during compression crush. It is a thing. Most iron powder is a resin that forms a heat generation layer, and it is masked and protected to prevent the formation of rust, etc., but if the powder is exposed to external pressure during use or transportation, air or chemicals It is for the purpose of preventing rust from occurring.
【００１９】[0019]
【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
波発生装置Ｅを作動して、この発生装置より発信する高
周波の電磁波によって発熱層２を加熱し、前記接続体３
０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。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 4 shows the joining of the synthetic resin pipes according to the present invention.
0 and 10 are butt-positioned in the connection body 30, the high-frequency generator E is operated, and the heat generating layer 2 is heated by the high-frequency electromagnetic wave emitted from this generator, and the connection body 3 is connected.
0 and the thermoplastic synthetic resin of the pipe body are melted and integrated, and after being integrated, both pipes are fusion-bonded to each other.
【００２０】（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。(Other Embodiments) This embodiment is applied when the tubular body is made of cross-linked polyethylene. The basic structure will be described below with reference to FIGS. 5 and 6. is there.
【００２１】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
料と誘導加熱の発熱体で構成した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。Reference numeral 10 in both figures is a synthetic resin pipe according to the present invention, and the pipe body 1 is formed mainly of crosslinked polyurethane. As described above, the heating layer 2 is formed by kneading a thermoplastic synthetic resin material or a heterogeneous material having an affinity with the thermoplastic synthetic resin material and a powder or granular material composed of a heating element for induction heating. Is formed in.
【００２２】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。In FIG. 5, non-crosslinked polyethylene is formed as a fusion bonding layer 3 on the surface of the heat generating layer 2 described above. Figure 6
Is a protective fusion-bonding layer 3 formed with a welding material such as a thermoplastic synthetic resin material on the surface of the heat-generating layer 2.
【００２３】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
ように高周波発生装置Ｅ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。FIG. 7 shows a method of joining the resin pipe 10 and the L-shaped joint 30 according to the present invention, in which the two are fused and joined by the high frequency generator E as in the previous embodiment. . In this embodiment, the main material of the tubular body is crosslinked polyurethane, and the protective fusion bonding layer 3 is used as the fusion bonding material.
【００２４】[0024]
【発明の効果】この発明は管体表面に管体材料と熱可塑
性合成樹脂と同質または親和性のある異質材の混練材と
誘導加熱の発熱体で構成した粉粒体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。EFFECTS OF THE INVENTION The present invention provides a heating layer formed on the surface of a tube with a kneaded material of a heterogeneous material having the same or an affinity for the thermoplastic material and a thermoplastic material and a granular material composed of a heating element for induction heating. Since it is provided, this synthetic resin pipe or other plastic molded product can be joined directly through the high-frequency generator at the contact point, and after the cooling process, both parts can be joined. Is.
【００２５】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。Further, according to the present invention, by providing a protective layer on the surface of the heat generating layer, it is possible to prevent rust, increase melting of the connecting portion and increase strength. Moreover, in the present invention, even when the tubular body is formed of a crosslinked polyethylene layer, the joining method similar to that of the thermoplastic synthetic resin pipe can be applied by forming the protective layer with a non-crosslinked polyethylene material.
【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。FIG. 1 is a cross-sectional view of essential parts of the basic structure of a synthetic resin pipe according to the present invention.
【図２】発熱層の断面説明図である。FIG. 2 is a cross-sectional explanatory diagram of a heat generating layer.
【図３】この発明に係る合成樹脂管の要部断面図であ
る。FIG. 3 is a sectional view of an essential part of a synthetic resin pipe according to the present invention.
【図４】この発明に係る実施例の断面説明図である。FIG. 4 is a sectional explanatory view of an embodiment according to the present invention.
【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。FIG. 5 is a cross-sectional view of essential parts of the basic structure of another embodiment according to the present invention.
【図６】この発明に係る他の実施例の要部断面図であ
る。FIG. 6 is a cross-sectional view of an essential part of another embodiment according to the present invention.
【図７】この発明の他の実施例の適用断面図である。FIG. 7 is an applied sectional view of another embodiment of the present invention.
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 粉粒体 ３０ 接続体（継手） DESCRIPTION OF SYMBOLS 1 Tubular body 2 Exothermic layer 3 Protective fusion layer 10 Synthetic resin pipe 21 of this invention 21 Synthetic resin 22 Powder / granular body 30 Connection body (joint)
【手続補正書】[Procedure amendment]
【提出日】平成５年１２月２４日[Submission date] December 24, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【書類名】 明細書[Document name] Statement
【発明の名称】 高周波誘導加熱融着接合用熱可塑性合
成樹脂管Title: Thermoplastic synthetic resin tube for high frequency induction heating fusion bonding
【特許請求の範囲】[Claims]
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】本発明は、高周波誘導加熱融着接
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磁界
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。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an invention of a thermoplastic synthetic resin pipe for high-frequency induction heating fusion bonding, and more specifically, using this pipe, a high-frequency magnetic field for joining with other plastic pipes. /> It is intended to obtain a plastic molded product by using a generator.
【０００２】[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。2. Description of the Related Art Currently, plastic pipes are used as various pipe materials such as air, hydraulic pressure, water pressure pipes, gas pipes, water and sewer pipes, hot water pipes, and chemical solution pipes by taking advantage of their excellent properties. Although there are various joining methods for joining these plastic pipes depending on the material, the heat fusion method is considered to be the best for the thermoplastic synthetic resin pipe.
【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。However, in order to perform the heat fusion bonding, various complicated steps were required. For example, a method of heating and melting the surface of the pipe joint portion, simultaneously heating and melting the joint inner surface, removing the heating body, press-fitting, cooling and solidifying, and joining.
A method in which a pipe and a joint are joined to each other by forming an electric heating element incorporated on the inner surface of the joint of the joint (the E / F joint) and a current is passed to rapidly fuse the electric heating element by fusion bonding. is there.
【０００４】[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。As described above, most of the conventional pipe joining methods have been devised for pipe fittings.
【０００５】本発明は、パイプの製造時に高周波誘導発
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、高周波磁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。According to the present invention, a high-frequency induction heating layer is formed at the time of manufacturing a pipe, so that a pipe joint and a molded product can be molded by a general plastic molding method using a high-frequency magnetic field generator . It is an object of the present invention to provide a synthetic resin pipe which enables fusion bonding and enables joining without special consideration for the joint portion of a pipe joint or other joint molded product.
【０００６】[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、高周波誘導発熱材の粉粒体との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。In order to achieve the above-mentioned object, the present invention uses two or more extruders to continuously produce a thermoplastic synthetic resin pipe by a conventional pipe extrusion method. Mold. In detail, from two kinds of uniformly kneaded raw materials, a synthetic resin as a main material, a synthetic resin material having the same or different affinity as the main material, and a granular material of a high frequency induction heating material as raw materials. Then, each of these raw materials may be extruded into a pipe shape from an extruder with a multi-layer extrusion die to be molded.
【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
導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は高周波誘導発熱層を示し、図３の符号３
は保護層を表わしている。The basic structure of the present invention will be described below with reference to FIGS. 1, 2 and 3. 1 and 3 show the basic structure of the present invention, and reference numeral 10 shows a thermoplastic synthetic resin pipe for high-frequency induction heating fusion bonding,
Reference numeral 1 denotes a tubular body, 2 denotes a high frequency induction heating layer, and reference numeral 3 in FIG.
Represents a protective layer.
【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４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と誘導性の発熱体で
構成した粉粒体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。[0008] the tube 1 is formed form a thermoplastic synthetic resin material, the heat generating layer 2 is exothermic heterogeneous materials 21 and inductive with tube-forming material of the same quality or affinity as shown in Figure 4 It is formed by kneading the powdery particles 22 formed of a body, and is formed on the surface of the tubular body. The protective layer 3 is a thermoplastic synthetic resin material which is the same material as or different material with affinity for the tubular body,
The surface of the heat generating layer 2 is covered.
【０００９】発熱材料は、導電体，磁性体であれば一般
的には高周波誘導加熱が可能であるが、熱可塑性合成樹
脂を加熱するのには、安価で最も発熱効率の良い鉄（Ｆ
ｅ）が最も良い。それも純鉄粉か（Ｆｅ２Ｏ３）の酸化
鉄が良い。発熱体の粒度については、粒度が大きい粒発
熱効果は大であるが、パイプの成形用としては０．０１
〜１．００ｍｍの範囲で充分である。Generally, if the heat generating material is a conductor or a magnetic substance, high frequency induction heating is possible. However, for heating a thermoplastic synthetic resin, iron (F) having the highest heat generating efficiency is used.
e) is the best. It is also good to use pure iron powder or iron oxide (Fe 2 O 3 ). Regarding the particle size of the heating element, the particle size is large and the particle heating effect is large, but it is 0.01 for pipe molding.
A range of up to 1.00 mm is sufficient.
【００１０】パイプの肉厚２ｍｍ以下であれば、０．０
５ｍｍ以下が望ましい。これはパイプの内外面の表面仕
上りにあまり大きい粒度のものは成形に好ましくないか
らである。If the wall thickness of the pipe is 2 mm or less, 0.0
5 mm or less is desirable. This is because that the surface finish of the inner and outer surfaces of the pipe having too large a grain size is not preferable for molding.
【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。Regarding the shape of the powder or granule, there are cases where a polygonal shape and a spherical shape are preferable. For use in places where the external pressure is low, such as straight pipes, polygonal particles are preferable. When used as a bent pipe or bent, a spherical powder or granule is desirable. This powder or granular material is selected in consideration of the strength of the pipe. If the rigidity of the pipe is required, if the flexibility and flexibility of the polygonal pipe and cold resistance are important, the spherical shape is selected. Is preferable, because the notch effect can be reduced as compared with the polygonal shape. This is evident in the conventional filler formulation of reinforced plastics.
【００１２】高周波磁界発生装置について、従来は発信
器に真空管を用いていた。現在でも大出力のものは、真
空管方式であるが、最近トランジスターを用いた発信器
が開発され、除々にではあるが、大出力のトランジスタ
ー発信装置による高周波磁界発生装置が開発実用化され
て来ている。With respect to the high frequency magnetic field generator, a vacuum tube has been used as a transmitter in the past. Even though the high output type is a vacuum tube type, a transmitter using a transistor has been recently developed, and gradually, a high frequency magnetic field generator using a high output transistor oscillator has been developed and put into practical use. There is.
【００１３】電磁調理器と呼ばれるものが家庭用電化製
品として、例えば高周波誘導加熱方式による、ＩＨ電磁
炊飯器などである。トランジスタによる発信装置は、真
空管発信装置より小型，軽量に設計出来るので、従来の
真空管発信装置より軽量で運搬が容易で、低価格で提供
可能でありしかも電気消費効率も良いので、今後この種
の高周波誘導加熱方式による加熱方法は、高周波誘電加
熱方式（電子レンジ）に並んで、瞬時に加熱が可能であ
ることからその応用は急速に進歩するものと思考され
る。A household electric appliance called an electromagnetic cooker is, for example, an IH electromagnetic rice cooker using a high frequency induction heating system. Since the transmitter using a transistor can be designed to be smaller and lighter than the vacuum tube transmitter, it is lighter in weight than the conventional vacuum tube transmitter, easy to carry, can be provided at a low price, and has good electricity consumption efficiency. The heating method using the high-frequency induction heating method is considered to be rapidly advanced in application because it can be heated instantaneously along with the high-frequency dielectric heating method (microwave oven).
【００１４】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。The case of application to a crosslinked polyethylene pipe will be described below. Most of the thermoplastic synthetic resin pipes are made over many types of pipes, but currently, cross-linked polyethylene pipes are used for gas pipes, hot water pipes,
Depends on pipe heat tent.
【００１５】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。Although it is used for floor heating of buildings, this cross-linked polyethylene pipe, like general polyethylene pipe,
Further, unlike other thermoplastic synthetic resin pipes, it is impossible to easily perform heat fusion bonding. Since the molecules are cross-linked through a cross-linking agent, heat resistance, chemical resistance, and mechanical strength are improved, but they do not melt well even when heated and gelation progresses. Insufficient bonding.
【００１６】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。Therefore, the heat-sealing layer is formed and the portion is joined. That is, after the extrusion molding having a two-layer structure, water-crosslinking is generally performed. The finished pipe has an integral double structure of cross-linked polyethylene, non-cross-linked, and general polyethylene layer, and the same consideration must be given to its pipe joint.
【００１７】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、中間部は高周波誘導発
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。For the present invention, therefore, it is necessary for each layer inside the tubular body that the tubular body is a crosslinked polyethylene portion, the middle portion is a high frequency induction heating layer, and the outer layer portion is a general non-crosslinked polyethylene layer. This general non-crosslinked polyethylene layer plays the role of thermal fusion bonding.
【００１８】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、鉄の粉粒体はほと
んど発熱層を形成する樹脂で、マスキング保護され錆等
の発生は防止出来るが、使用中又は運搬中に外部圧力で
その粉粒体が露出した場合、空気や薬品等で錆の発生を
防止する目的である。Another important reason for providing the same pipe as this is that the three layers are for the purpose of protecting the heat generating layer and because the heat generating material is mixed in the heat generating layer of the pipe. Since the strength of the material of the part decreases (especially tensile burst strength due to the notch effect), the outer layer part of the same quality is formed in the inner layer part of the pipe for the effect of preventing cracks on the pipe surface during compression crush. It is a thing. Most iron powder is a resin that forms a heat generation layer and is protected by masking to prevent the formation of rust.However, if the powder is exposed to external pressure during use or transportation, air or chemicals It is for the purpose of preventing rust from occurring.
【００１９】[0019]
【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
波電源と磁界発生コイルを有する高周波磁界発生装置Ｅ
を作動して、この発生装置より発生する高周波磁界によ
って高周波誘導発熱層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。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 4 shows the joining of the synthetic resin pipes according to the present invention.
0,10 is positioned in the form butt connector 30, high frequency
High frequency magnetic field generator E having wave power source and magnetic field generating coil
The operating, heat the high frequency induction heating layer 2 I by <br/> high frequency magnetic field that occurs from the generator, the connector 30 and the pipe thermoplastic synthetic resin melt was integrally Do of integral After being made into a solidified product, both pipes are fusion-bonded by cooling.
【００２０】（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。(Other Embodiments) This embodiment is applied when the tubular body is made of cross-linked polyethylene. The basic structure will be described below with reference to FIGS. 5 and 6. is there.
【００２１】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
料と誘導加熱の発熱体で構成した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。Reference numeral 10 in both figures is a synthetic resin pipe according to the present invention, and the pipe body 1 is formed mainly of crosslinked polyurethane. As described above, the heating layer 2 is formed by kneading a thermoplastic synthetic resin material or a heterogeneous material having an affinity with the thermoplastic synthetic resin material and a powder or granular material composed of a heating element for induction heating. Is formed in.
【００２２】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。In FIG. 5, non-crosslinked polyethylene is formed as a fusion bonding layer 3 on the surface of the heat generating layer 2 described above. Figure 6
Is a protective fusion-bonding layer 3 formed with a welding material such as a thermoplastic synthetic resin material on the surface of the heat-generating layer 2.
【００２３】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
ように高周波磁界発生装置Ｅ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。FIG. 7 shows a method of joining the resin pipe 10 and the L-shaped joint 30 according to the present invention, in which both are fused and joined by the high frequency magnetic field generator E as in the previous embodiment. is there. In this embodiment, the main material of the tubular body is crosslinked polyurethane, and the protective fusion bonding layer 3 is used as the fusion bonding material.
【００２４】[0024]
【発明の効果】この発明は管体表面に管体材料と熱可塑
性合成樹脂と同質または親和性のある異質材の混練材と
誘導加熱の発熱体で構成した粉粒体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磁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。EFFECTS OF THE INVENTION The present invention provides a heating layer formed on the surface of a tube with a kneaded material of a heterogeneous material having the same or an affinity for the thermoplastic material and a thermoplastic material and a granular material composed of a heating element for induction heating. Since it is provided, the synthetic resin pipes or other plastic molded products can be joined directly to each other through the high-frequency magnetic field generator, and the two parts can be joined through the subsequent cooling process. It is a thing.
【００２５】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。Further, according to the present invention, by providing a protective layer on the surface of the heat generating layer, it is possible to prevent rust, increase melting of the connecting portion and increase strength. Moreover, in the present invention, even when the tubular body is formed of the crosslinked polyethylene layer, the joining method similar to that of the thermoplastic synthetic resin pipe can be applied by forming the protective layer of the non-crosslinked polyethylene material.
【図面の簡単な説明】[Brief description of drawings]
【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。FIG. 1 is a cross-sectional view of essential parts of the basic structure of a synthetic resin pipe according to the present invention.
【図２】発熱層の断面説明図である。FIG. 2 is a cross-sectional explanatory diagram of a heat generating layer.
【図３】この発明に係る合成樹脂管の要部断面図であ
る。FIG. 3 is a sectional view of an essential part of a synthetic resin pipe according to the present invention.
【図４】この発明に係る実施例の断面説明図である。FIG. 4 is a sectional explanatory view of an embodiment according to the present invention.
【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。FIG. 5 is a cross-sectional view of essential parts of the basic structure of another embodiment according to the present invention.
【図６】この発明に係る他の実施例の要部断面図であ
る。FIG. 6 is a cross-sectional view of an essential part of another embodiment according to the present invention.
【図７】この発明の他の実施例の適用断面図である。FIG. 7 is an applied sectional view of another embodiment of the present invention.
【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 粉粒体 ３０ 接続体（継手）[Explanation of reference numerals] 1 tube body 2 heat generating layer 3 protective fusion layer 10 synthetic resin tube 21 of this invention 21 synthetic resin 22 powder and granular material 30 connection body (joint)
Claims (2)
部に、高周波誘導発熱性材料の粉粒体を主成分とする発
熱材と、管体形成材料と同質又は、親和性のある異質材
の混練材と誘導加熱の発熱体で構成した粉粒体で形成さ
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導発熱層を有する高周波誘導
加熱融着接合管。1. A heat-generating material having a powdery material of a high-frequency induction heat-generating material as a main component in the middle outermost layer of the thermoplastic synthetic resin tube, and having the same quality or affinity as the tube-forming material. A high-frequency induction heating melt having a high-frequency induction heating layer, characterized in that a heating layer formed of a granular material composed of a kneading material of a heterogeneous material and an induction heating element is formed over the entire length of the tube. Attachment tube.
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、新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導
発熱層を有する高周波誘導加熱融着接合管。2. A thermoplastic synthetic resin which is the same as or different from the tubular body on the outer surface of the tubular heating layer for protecting the heating layer and facilitating thermal fusion bonding. so,
A high-frequency induction heating fusion-bonding tube having a high-frequency induction heating layer having a multilayer integrated structure, which is coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5192692A JPH0724917A (en) | 1993-07-08 | 1993-07-08 | Thermoplastic synthetic resin tube for joining by high frequency induction heating fusion welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5192692A JPH0724917A (en) | 1993-07-08 | 1993-07-08 | Thermoplastic synthetic resin tube for joining by high frequency induction heating fusion welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0724917A true JPH0724917A (en) | 1995-01-27 |
Family
ID=16295464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5192692A Pending JPH0724917A (en) | 1993-07-08 | 1993-07-08 | Thermoplastic synthetic resin tube for joining by high frequency induction heating fusion welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0724917A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6080503A (en) * | 1997-03-29 | 2000-06-27 | Ballard Power Systems Inc. | Polymer electrolyte membrane fuel cells and stacks with adhesively bonded layers |
| US6777127B2 (en) | 2001-06-22 | 2004-08-17 | Ballard Power Systems Inc. | Systems, apparatus and methods for bonding and/or sealing electrochemical cell elements and assemblies |
| WO2012051719A1 (en) * | 2010-10-22 | 2012-04-26 | Shawcor Ltd. | Non-crosslinked shrinkable casing member for forming a connection between tubular sections and method of forming said connection by induction fusion |
-
1993
- 1993-07-08 JP JP5192692A patent/JPH0724917A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6080503A (en) * | 1997-03-29 | 2000-06-27 | Ballard Power Systems Inc. | Polymer electrolyte membrane fuel cells and stacks with adhesively bonded layers |
| US6495278B1 (en) | 1997-03-29 | 2002-12-17 | Ballard Power Systems Inc. | Polymer electrolyte membrane electrochemical fuel cells and stacks with adhesively bonded layers |
| US6777127B2 (en) | 2001-06-22 | 2004-08-17 | Ballard Power Systems Inc. | Systems, apparatus and methods for bonding and/or sealing electrochemical cell elements and assemblies |
| WO2012051719A1 (en) * | 2010-10-22 | 2012-04-26 | Shawcor Ltd. | Non-crosslinked shrinkable casing member for forming a connection between tubular sections and method of forming said connection by induction fusion |
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