JP2002337237A - Synthetic resin pipe - Google Patents

Synthetic resin pipe

Info

Publication number
JP2002337237A
JP2002337237A JP2001150720A JP2001150720A JP2002337237A JP 2002337237 A JP2002337237 A JP 2002337237A JP 2001150720 A JP2001150720 A JP 2001150720A JP 2001150720 A JP2001150720 A JP 2001150720A JP 2002337237 A JP2002337237 A JP 2002337237A
Authority
JP
Japan
Prior art keywords
pipe
synthetic resin
scraping
fusion
bonding
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
JP2001150720A
Other languages
Japanese (ja)
Inventor
Tomoyuki Nemoto
友幸 根本
Yoshihiro Kawamura
好宏 川村
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.)
Mitsubishi Plastics Inc
Original Assignee
Mitsubishi Plastics 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 Mitsubishi Plastics Inc filed Critical Mitsubishi Plastics Inc
Priority to JP2001150720A priority Critical patent/JP2002337237A/en
Publication of JP2002337237A publication Critical patent/JP2002337237A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—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"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—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
    • B29C66/70—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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/967—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes
    • B29C66/9672—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes involving special data inputs, e.g. involving barcodes, RFID tags
    • 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
    • B29C2795/00—Printing on articles made from plastics or substances in a plastic state
    • B29C2795/002—Printing on articles made from plastics or substances in a plastic state before shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3432—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding comprising several wires, e.g. in the form of several independent windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic resin pipe which enables easily confirming an appropriate time for possible electric fusion-bonding even without performing a scraping operation and thus significantly eliminates a trouble for electric fusion-bonding work. SOLUTION: An indication part 16 for indicating a pipe manufacturing date or the like by which it is judged that the electric fusion-bonding work can be done even without performing the scraping process, is provided on the outer peripheral surface of the synthetic resin pipe to be joined by an electrically fusion-bonding joint which fusion-bonds and joins the pipe by a heating wire. Consequently, it is possible to precisely determine whether the scraping process is necessary only through viewing the indication part 16.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、合成樹脂管に関
し、詳しくは、管同士の接合を電気融着継手によって行
う合成樹脂管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin pipe, and more particularly, to a synthetic resin pipe in which pipes are joined by an electric fusion joint.

【０００２】[0002]

【従来の技術】合成樹脂管、例えばガス管や水道管とし
て用いられるポリエチレン管を接合する方法として、電
気融着継手を使用した接合法が広く行われている。この
電気融着継手は、ポリエチレン管との接合面、通常は受
口内周面に電熱線（発熱線）を埋設したものであって、
ポリエチレン管との接合時に、この発熱線に通電して発
熱させ、接合面であるポリエチレン管外周面と受口内周
面のポリエチレン樹脂を溶融させることにより、互いに
融着させて接合させるように形成されている。2. Description of the Related Art As a method for joining a synthetic resin pipe, for example, a polyethylene pipe used as a gas pipe or a water pipe, a joining method using an electric fusion joint is widely used. This electric fusion joint has a heating wire (heating wire) embedded in a joint surface with a polyethylene pipe, usually an inner peripheral surface of a receiving port.
At the time of joining with the polyethylene pipe, the heating wire is energized to generate heat, and the polyethylene resin on the outer peripheral face of the polyethylene pipe and the inner peripheral face of the receiving port are melted so that they are fused and joined to each other. ing.

【０００３】このとき、両者の接合面に酸化膜が存在す
ると、酸化膜によって両者の溶融樹脂同士の混合が不十
分となり、必要な接合強度が得られなくなることがある
ため、電気融着継手を使用してポリエチレン管の接続を
行う際には、ポリエチレン管外周面のスクレープ（鉋掛
け）を行って酸化膜を除去するようにしている。[0003] At this time, if an oxide film is present on the joint surface between the two, the mixing of the molten resins of the two becomes insufficient due to the oxide film, and the necessary joint strength may not be obtained. When connecting a polyethylene pipe by using it, the outer peripheral surface of the polyethylene pipe is scraped (planed) to remove an oxide film.

【０００４】[0004]

【発明が解決しようとする課題】このポリエチレン管の
酸化膜の除去（スクレープ）作業は、まず、ポリエチレ
ン管の表面に電気融着継手との接合面に対応する寸法を
測り採り、その部分に表面切削の目安となる波線等を描
いた後、スクレーパーによって前記波線が消える程度に
表面を切削することにより行われる。このとき、切削量
が多過ぎても、また、不十分であっても、継手との融着
接合が不完全となるおそれがある。In order to remove (scrape) the oxide film from the polyethylene pipe, first, the surface of the polyethylene pipe is measured for dimensions corresponding to the joint surface with the electro-fusion joint, and the surface is subjected to the measurement. After drawing a wavy line or the like as a guide for cutting, the surface is cut by a scraper to such an extent that the wavy line disappears. At this time, even if the cutting amount is too large or insufficient, the fusion bonding with the joint may be incomplete.

【０００５】一方、ポリエチレン管は、製造直後からあ
る程度の期間までは、電気融着前のスクレープを行わな
くても十分な接合強度を得ることができる。しかし、外
観からは酸化膜の状態が確認できないため、全てのポリ
エチレン管に対してスクレープ作業を行ってから電気融
着を行うようにしていた。[0005] On the other hand, a polyethylene pipe can obtain a sufficient bonding strength immediately after the production, for a certain period of time, without performing scraping before electrofusion. However, since the state of the oxide film cannot be confirmed from the external appearance, a scraping operation is performed on all the polyethylene pipes before performing the electrofusion.

【０００６】そこで本発明は、スクレープを行わなくて
も電気融着が可能な状態を合成樹脂管の外観から容易に
確認することができ、電気融着作業の手間を大幅に軽減
することができる合成樹脂管を提供することを目的とし
ている。Therefore, according to the present invention, it is possible to easily confirm from the appearance of the synthetic resin tube the state in which the electric fusion can be performed without performing the scraping, and it is possible to greatly reduce the trouble of the electric fusion work. It is intended to provide a synthetic resin tube.

【０００７】[0007]

【課題を解決するための手段】上記目的を達成するた
め、本発明の合成樹脂管は、電熱線の発熱により融着接
合される合成樹脂管の外周面に、スクレープの要否を判
断可能な管製造時期等を示す表示部を設けたことを特徴
としている。In order to achieve the above object, the synthetic resin tube of the present invention can determine whether or not scraping is necessary on the outer peripheral surface of the synthetic resin tube to be fusion-bonded by the heat generated by the heating wire. It is characterized in that a display unit for indicating a pipe manufacturing time and the like is provided.

【０００８】[0008]

【発明の実施の形態】図１及び図２は、本発明の合成樹
脂管の一形態例を示すもので、図１はポリエチレン製片
受直管同士を接合した状態を示す一部断面正面図、図２
は管要部の正面図である。1 and 2 show an embodiment of a synthetic resin pipe according to the present invention. FIG. 1 is a partially sectional front view showing a state in which polyethylene straight pipes are joined to each other. , FIG. 2
FIG. 2 is a front view of a main part of the pipe.

【０００９】このポリエチレン製片受直管１１は、直管
部１２の一端に電気融着継手を形成する受口１３を設け
たものであって、該受口１３の内周面には、通常の電気
融着継手と同様に発熱線１４が埋め込まれており、外周
面には一対の端子部（ターミナル）１５が設けられてい
る。The straight receiving pipe 11 made of polyethylene is provided with a receiving port 13 at one end of a straight pipe section 12 for forming an electric fusion joint. A heat generating wire 14 is buried in the same manner as in the electric fusion joint described above, and a pair of terminal portions (terminals) 15 are provided on the outer peripheral surface.

【００１０】そして、直管部１２の外周面には、管製造
時期のように、スクレープの要否を判断可能な表示を含
む表示部１６が設けられている。この表示部１６は、図
２に示すように、文字や数字、記号により、例えば製造
会社１６ａ、サイズ１６ｂ、ロット番号１６ｃ等に加え
て、管製造時期（年月日）１６ｄやスクレープを必要と
しない期限（年月日）を表示したものであって、管長手
方向の直線、周方向の円、管長手方向に進む螺旋状等、
管外面に容易に視認可能な状態で設けられている。[0010] On the outer peripheral surface of the straight pipe section 12, there is provided a display section 16 including a display capable of judging the necessity of scraping, such as the time of pipe production. As shown in FIG. 2, the display unit 16 requires characters, numerals, and symbols to indicate, for example, a pipe manufacturing time (date) 16d and a scrape in addition to the manufacturer 16a, size 16b, lot number 16c, and the like. It shows the deadline (year, month, day) that is not to be used.
It is provided on the outer surface of the tube so as to be easily visible.

【００１１】前記管製造時期やスクレープを必要としな
い期限の表示は、管表面のポリエチレンの酸化の進行程
度を判断できるものであり、管製造時期等から、酸化膜
が形成されていないかを読取ることによってスクレープ
を行わずに電気融着接合を行うことができる。The indication of the pipe production time and the expiration date that does not require scraping can be used to determine the degree of progress of oxidation of polyethylene on the pipe surface, and read whether or not an oxide film is formed from the pipe production time and the like. Thereby, electrofusion bonding can be performed without performing scraping.

【００１２】すなわち、接合前に表示部１６を確認する
ことにより、スクレープを行わずに電気融着接合が行え
るか否かを判断することができ、表示部１６にスクレー
プを必要としない期限が表示されている場合は、この期
限を超えていなければスクレープを行わずに電気融着接
合を行うことができることを判断できる。That is, by checking the display unit 16 before joining, it is possible to determine whether or not electrofusion joining can be performed without performing scraping, and the display unit 16 displays a time limit that does not require scraping. In this case, if the time limit has not been exceeded, it can be determined that electrofusion bonding can be performed without scraping.

【００１３】また、表示部１６に管製造時期を表示した
場合は、例えば施工説明書等に、この管製造時期から、
例えば３ヶ月以内ならばスクレープを行わなくても電気
融着接合が行え、３ヶ月を経過していたら、スクレープ
を行ってから電気融着接合を行うということを記載して
おけばよい。When the pipe manufacturing time is displayed on the display section 16, for example, in the installation manual or the like, from the pipe manufacturing time,
For example, it may be stated that electrofusion bonding can be performed without scraping within 3 months, and that electrofusion bonding is performed after scraping after 3 months.

【００１４】前記表示部１６は、ポリエチレン管を製造
後に適当な印刷機や塗装機を使用して、染料や顔料を含
むインク、塗料で管表面に表示部を印刷、塗装する方法
等により、容易に形成することができる。The display section 16 can be easily formed by, for example, printing and painting the display section on the tube surface with an ink or paint containing a dye or pigment using a suitable printing machine or coating machine after manufacturing the polyethylene tube. Can be formed.

【００１５】なお、本形態例では、ガス管や水道管とし
て広く用いられているポリエチレン管を例に挙げて説明
したが、本発明は、電気融着接合が可能な各種熱可塑性
合成樹脂管に適用が可能である。In this embodiment, a polyethylene pipe widely used as a gas pipe or a water pipe has been described as an example. However, the present invention is applied to various thermoplastic synthetic resin pipes which can be subjected to electrofusion bonding. Applicable.

【００１６】[0016]

【発明の効果】以上説明したように、本発明の合成樹脂
管によれば、電気融着接合を行う際のスクレープの必要
性を容易に確認することができるので、電気融着作業の
手間を大幅に軽減することができる。As described above, according to the synthetic resin pipe of the present invention, it is possible to easily confirm the necessity of scraping when performing the electric fusion bonding, so that the labor of the electric fusion work can be reduced. It can be significantly reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図１】 ポリエチレン製片受直管同士を接合した状態
を示す一部断面正面図である。FIG. 1 is a partial cross-sectional front view showing a state where polyethylene straight receiving pipes are joined to each other.

【図２】 管要部の正面図である。FIG. 2 is a front view of a main part of a pipe.

【符号の説明】[Explanation of symbols]

１１…ポリエチレン製片受直管、１２…直管部、１３…
受口、１４…発熱線、１５…端子部、１６…表示部11: straight receiving pipe made of polyethylene, 12: straight pipe section, 13 ...
Receiving port, 14: heating wire, 15: terminal, 16: display

───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3H019 GA03 3H111 AA01 BA15 CB30 DA26 DB03 DB11 4F211 AA04 AD05 AD12 AD28 AG08 AH17 AH43 AM32 TA01 TC11 TD07 TH02 TH03 TH06 TH16 TN31  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3H019 GA03 3H111 AA01 BA15 CB30 DA26 DB03 DB11 4F211 AA04 AD05 AD12 AD28 AG08 AH17 AH43 AM32 TA01 TC11 TD07 TH02 TH03 TH06 TH16 TN31

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 電熱線の発熱により融着接合される合成
樹脂管の外周面に、スクレープの要否を判断可能な管製
造時期等を示す表示部を設けたことを特徴とする合成樹
脂管。1. A synthetic resin pipe provided on a peripheral surface of a synthetic resin pipe to be fusion-bonded by heat generated by a heating wire, for indicating whether or not scraping is necessary. .
JP2001150720A 2001-05-21 2001-05-21 Synthetic resin pipe Pending JP2002337237A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001150720A JP2002337237A (en) 2001-05-21 2001-05-21 Synthetic resin pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001150720A JP2002337237A (en) 2001-05-21 2001-05-21 Synthetic resin pipe

Publications (1)

Publication Number Publication Date
JP2002337237A true JP2002337237A (en) 2002-11-27

Family

ID=18995690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001150720A Pending JP2002337237A (en) 2001-05-21 2001-05-21 Synthetic resin pipe

Country Status (1)

Country Link
JP (1) JP2002337237A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015098124A (en) * 2013-11-19 2015-05-28 積水化学工業株式会社 System and method for managing joint
JP2020082494A (en) * 2018-11-22 2020-06-04 積水化学工業株式会社 Joint fusion system, electric fusion device, fusion possibility determination method and program
JP2021006377A (en) * 2019-06-28 2021-01-21 ダイプラ株式会社 Management system, management device, fusion welding device, and thermoplastic resin pipe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015098124A (en) * 2013-11-19 2015-05-28 積水化学工業株式会社 System and method for managing joint
JP2020082494A (en) * 2018-11-22 2020-06-04 積水化学工業株式会社 Joint fusion system, electric fusion device, fusion possibility determination method and program
JP7184610B2 (en) 2018-11-22 2022-12-06 積水化学工業株式会社 JOINT FUSION SYSTEM, ELECTRICAL FUSION APPARATUS, METHOD AND PROGRAM FOR JUDGING POSSIBLE FUSION
JP2021006377A (en) * 2019-06-28 2021-01-21 ダイプラ株式会社 Management system, management device, fusion welding device, and thermoplastic resin pipe

Similar Documents

Publication Publication Date Title
IT8319841A1 (en) TWO-WIRE RESISTANCE ELEMENT, HEATING ELEMENT MADE WITH IT, AS WELL AS PROCEDURE FOR REALIZING THIS HEATING ELEMENT
JP2002337237A (en) Synthetic resin pipe
JPH01500452A (en) Polyethylene pipe with integrated heating resistor for connection by electric welding
JP2732376B2 (en) Bonding method of plate-shaped resin material
JPS62288029A (en) Vessel made of resin and bonded by fusion, and fusion bonding thereof
JP2003278316A (en) Coupler for mechanical joint for reinforcement
JPH06265082A (en) Electric fusion coupling
JPH11304069A (en) Electrically fusing joint
JP2857387B1 (en) Pipe insertion / melting length marking jig
JP2005335218A (en) Welding method for plastic material
JP2003090485A (en) Fusion member with core
JPH05296382A (en) Pipe coupling
JP5193919B2 (en) Waterproof control box
JP2985588B2 (en) Method for joining electrofusion joint and thermoplastic resin molded article
JPH11304070A (en) Electrically fusing joint
JP2960391B1 (en) Makeup tube
JPH0780943A (en) Confirmation of fusion bonding resin product
JP2732380B2 (en) Electric fusion welding equipment for resin products
JPH079559A (en) Manufacture of electric fusion-bonding plastic tube joint
JPH08200581A (en) Welding method for plastic pipe
GB2068070A (en) Plumbing fittings
JP2817369B2 (en) Insertion material used for metal diffusion bonding and bonding method
JPH04168033A (en) Joining method of thermoplastic plastic hose and apparatus thereof
JP2747651B2 (en) Electrofusion joint and pipe connection method using the joint
JPH05296383A (en) Electrically fused coupling