JPS59152816A - Method for joining plastic pipe - Google Patents

Method for joining plastic pipe

Info

Publication number
JPS59152816A
JPS59152816A JP58026809A JP2680983A JPS59152816A JP S59152816 A JPS59152816 A JP S59152816A JP 58026809 A JP58026809 A JP 58026809A JP 2680983 A JP2680983 A JP 2680983A JP S59152816 A JPS59152816 A JP S59152816A
Authority
JP
Japan
Prior art keywords
heat
plastic pipe
shrinkable
plastic
heating
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
JP58026809A
Other languages
Japanese (ja)
Inventor
Akio Nagata
永田　昭生
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP58026809A priority Critical patent/JPS59152816A/en
Publication of JPS59152816A publication Critical patent/JPS59152816A/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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/66—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
    • 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
    • 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
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • B29C66/50—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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73715—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable heat-shrinkable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
    • F16L47/22—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics using shrink-down material
    • 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
    • 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)
  • General Engineering & Computer Science (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To join plastic pipes within a short period readily and tightly that will be used for heating or supplying hot water, by heating one end of the plastic pipe, enlarging the end, cooling the end so that the end is formed into a heat- shrinkable end, then inserting one end of the other plastic pipe into said heat- shrinkable end and heating said heat-shrinkable end to be shrunk. CONSTITUTION:One end of a plastic pipe (e.g. one having configuration memory such as one made of a crosslinked polyethylene) 2 is heated to or over the softening point of the plastic pipe. Then the end is enlarged diametrically and with the configuration kept the end is cooled to be formed into a heat-shrinkable end 1. Thereafter, one end 4 of the other plastic pipe on which an adhesive (e.g. a hot melt adhesive or the like) 5 has been applied is inserted into the heat- shrinkable end 1 and the heat-shrinkable end 1 is heated to be shrunk thereby joining the plastic pipes. EFFECT:As a joint is not used, the cost of joining becomes low.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、プラスチックパイプ、取分け、暖房、給湯に
使用されるプラスチックパイプの接続方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to plastic pipes, and in particular to a method for connecting plastic pipes used for space heating and hot water supply.

〔発明の背景〕[Background of the invention]

現在、暖房用、給湯用パイプとして、主に銅パイプが使
用されているが、（１）高価である。（１１ン流水によ
る腐食が発生する。０１１）熱放散率が高いなどの欠点
がある。その為、低価格、耐食性、低熱放散率を備えた
パイプの材質として耐熱性の合成樹脂、例えば、架橋ポ
リエチレン、ポリプロピレン等のパイプが使用されるよ
うになった。しかし乍ら、パイプ同志或はパイプと暖房
器等の機器との接続において以下の様な問題があった。Currently, copper pipes are mainly used as pipes for heating and hot water supply, but (1) they are expensive. (Corrosion occurs due to flowing water.011) There are drawbacks such as a high heat dissipation rate. For this reason, pipes made of heat-resistant synthetic resins, such as cross-linked polyethylene and polypropylene, have come to be used as pipe materials that are inexpensive, corrosion resistant, and have a low heat dissipation rate. However, there have been the following problems in connection between pipes or between pipes and devices such as heaters.

即ち、接続部分において、一般に錆を発生゛しない真チ
ユウ、鉋金を継手として使用している為、材料費及びネ
ジ部等の加工費が高くなり、コストの高いものであった
。また、樹脂は金属より熱膨張率が大きくその為接続部
にゆるみが生じやすく、漏水する可能性が高いものであ
り、ヒートサイクルがががった場合特にいちじるしい。That is, in the connection part, since brass or plated metal, which does not generally cause rust, is used as a joint, the cost of materials and processing of threaded parts, etc. are high, resulting in high costs. In addition, resin has a higher coefficient of thermal expansion than metal, so connections tend to loosen and there is a high possibility of water leakage, which is especially serious when the heat cycle goes awry.

〔発明の要約〕[Summary of the invention]

本発明は、プラスチックパイプの従来の接続方法におけ
る上記欠点を克服するために為されたもので、その要旨
は、プラスチックパイプの少なくとも一端末部を該プラ
スチックの軟化点以上に加熱した後、該端末部の径を拡
大し、その拡大された形状を保持したまま冷却すること
によって熱収縮性端末部を成形し、該熱収縮性端末部内
に、他のプラスチックパイプの端末部を挿入した後、上
記熱収縮性端末部を加熱収縮せしめることを特徴とする
プラスチックパイプの接合方法にある。The present invention has been made in order to overcome the above-mentioned drawbacks in the conventional connecting method of plastic pipes, and the gist thereof is to heat at least one end portion of a plastic pipe to a temperature above the softening point of the plastic, and then connect the end portion of the plastic pipe. A heat-shrinkable end part is formed by enlarging the diameter of the part and cooling it while maintaining the enlarged shape, and after inserting the end part of another plastic pipe into the heat-shrinkable end part, the above-mentioned A method for joining plastic pipes characterized by heating and shrinking a heat-shrinkable end portion.

〔発明の詳細な説明〕[Detailed description of the invention]

本発明において用いられるプラスチックパイプは、形状
記憶保持性を持ち得るプラスチックから成るもので、そ
の様なプラスチックとして架橋ポリエチレン、エチレン
酢酸ビニル共重合体等のホリオレフイン、ポリエチレン
テレフクレ−１・等のポリエステルなどが挙げらｎる。The plastic pipe used in the present invention is made of a plastic that can have shape memory retention properties, and examples of such plastics include crosslinked polyethylene, polyolefin such as ethylene vinyl acetate copolymer, and polyester such as polyethylene tereph-clay 1. There are many examples.

ここで、形状記憶保持性とは、例えばシート、パイプ或
はチューブの様なプラスチック成形品において、用いら
れたプラスチックの軟化点以上に成形品を加熱し成形品
を膨張などの機械的変形を加えた後、変形を保持したま
ま、常温まで冷却することによって形状記憶が保持され
る性質を言い、その様に変形された成形品は、加熱する
ことによって成形品の元の形状−に回復し、特に膨張、
延伸などの変形に対しては加熱により収縮するので、熱
収縮性成形品と言われる。Here, shape memory retention refers to, for example, in plastic molded products such as sheets, pipes, or tubes, the molded product is heated above the softening point of the plastic used and subjected to mechanical deformation such as expansion. This refers to the property of retaining shape memory by cooling the molded product to room temperature while retaining its deformation.A molded product that has been deformed in this way can recover its original shape by heating. Especially expansion,
It is called a heat-shrinkable molded product because it shrinks when heated during deformation such as stretching.

本発明においてプラスチックパイプの端末部において熱
収縮性を付与する工程は以下の様にして為される。該パ
イプの端末部を熱風を当てたり、熱雰囲気中に入れたり
等適当な加熱具を用いて加熱し、次いで、例えば円錐形
の治具をパイプの端末部に挿入してパイプの端末部を拡
大する。然る後、端末部を拡大したまま（即ち円錐形の
治具を挿入したまま）、常温まで冷却する。冷却は放冷
或は冷風の吹き付は等による強制冷却により為される。In the present invention, the step of imparting heat shrinkability to the end portion of the plastic pipe is carried out as follows. The end of the pipe is heated using an appropriate heating tool, such as by applying hot air or placing it in a hot atmosphere, and then, for example, a conical jig is inserted into the end of the pipe to heat the end of the pipe. Expanding. Thereafter, the end portion is cooled to room temperature while being expanded (that is, with the conical jig inserted). Cooling is performed by forced cooling, such as by air cooling or by blowing cold air.

冷却後円錐形の治具を除去すると熱収縮性端末部が形成
される。After cooling, the conical jig is removed to form a heat-shrinkable terminal.

第１図は得られたプラスチックパイプの熱収縮性端末部
内に、他のプラスチックパイプの端末部を挿入するとき
の状態を示す断面図で、（１）はプラスチックパイプ（
２）の端末部を拡大することによって成形された熱収縮
性端末部、（３）は他のプラスチックパイプ、（４）は
他のプラスチックパイプ（３）の端末部で、端末部（４
）の外面には接着剤（５）が塗布されている。接着剤（
５）は熱収縮性端末部の内面に設けてもよい。Figure 1 is a cross-sectional view showing the state when the end part of another plastic pipe is inserted into the heat-shrinkable end part of the obtained plastic pipe, and (1) shows the state in which the end part of another plastic pipe is inserted into the heat-shrinkable end part of the obtained plastic pipe.
A heat-shrinkable end portion formed by enlarging the end portion of (2), (3) is another plastic pipe, (4) is an end portion of another plastic pipe (3), and (4) is the end portion of another plastic pipe.
) is coated with adhesive (5). glue(
5) may be provided on the inner surface of the heat-shrinkable end portion.

接着剤の種類はプラスチックパイプの材質によって適宜
選択されるが、例えばホットメルト接着剤（ポリアミド
、エチレン酢酸ビニル共重合体、エチレン・エチルアク
リレート共重合体等を主成分とする接着剤）、ポリエチ
レンに架橋剤を添加して成る接着剤などが挙げられる。The type of adhesive is selected appropriately depending on the material of the plastic pipe, but for example, hot melt adhesive (adhesive whose main component is polyamide, ethylene vinyl acetate copolymer, ethylene/ethyl acrylate copolymer, etc.), polyethylene Examples include adhesives containing a crosslinking agent.

熱収縮性端末部に他のプラスチックパイプの端末部を挿
入した後、熱収縮性端末部をバーナ、トチランプ等の加
熱具により加熱すると、接着剤（５）は熔けて、パイプ
同志が接合される。After inserting the end of another plastic pipe into the heat-shrinkable end, when the heat-shrinkable end is heated with a heating tool such as a burner or a conker lamp, the adhesive (5) melts and the pipes are joined together. .

他のプラスチックパイプの端末部は、熱膨張性を付与し
たものであってもよい。熱膨張性の付与は、熱収縮性の
付与とは逆に、パイプの端末を圧縮変形することによっ
て為される。この場合熱収縮性端末部への他のプラスチ
ックの端末部の挿入は更に容易になる。The end portion of the other plastic pipe may be provided with thermal expandability. Contrary to imparting heat shrinkability, imparting thermal expandability is achieved by compressively deforming the end of the pipe. In this case, the insertion of other plastic terminal parts into the heat-shrinkable terminal part becomes easier.

本発明は、以上の様に構成されるプラスチックパイプの
接続方法であるから、以下の効果を奏するものであり、
その工業的価値はきわめて高いものである。Since the present invention is a method for connecting plastic pipes configured as described above, it has the following effects:
Its industrial value is extremely high.

（１）プラスチックパイプの端末部を互に挿入した後、
加熱収縮するだけでパイプの接続ができるので、接合作
業は短時間で簡単にできる。(1) After inserting the ends of the plastic pipes into each other,
The pipes can be connected simply by heating and shrinking, making the joining process quick and easy.

（１１）継手を用いないので、接合のコストは低い。(11) Since no joints are used, the cost of joining is low.

（Ｉｉｉ）プラスチックパイプ同志、直接接合されるか
ら、熱膨張係数の差による隙間の発生が、殆どなく、接
合が確実である。(Iiii) Since the plastic pipes are directly joined together, there are almost no gaps caused by differences in thermal expansion coefficients, and the joining is reliable.

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

第１図は本発明における他のプラスチックパイプの端末
部をプラスチックパイプの熱収縮端末部に挿入する工程
を示す断面図、第２図は本発明によって得られたプラス
チックパイプの接合部である。 （１）・熱収縮性端末部、（２）　　プラスチックパイ
プ（３）・・・他のプラスチックパイプ、（４）・・・
他のプラスチックパイプの端末部、（５）・接着剤 バー図 ■ ７２図FIG. 1 is a sectional view showing the step of inserting the end portion of another plastic pipe into the heat-shrinkable end portion of the plastic pipe according to the present invention, and FIG. 2 is a joint portion of the plastic pipe obtained according to the present invention. (1)・Heat-shrinkable terminal part, (2) Plastic pipe (3)...Other plastic pipe, (4)...
Terminal part of other plastic pipes, (5)・Adhesive bar diagram■Figure 72

Claims (2)

【特許請求の範囲】[Claims] （１）プラスチックパイプの少なくとも一端末部を該プ
ラスチックの軟化点以上に加熱した後、該端末部の径を
拡大し、その拡大された形状を保持したまま冷却するこ
とによって熱収縮性端末部を成形し、該熱収縮性端末部
内に、他のプラスチックパイプの端末部を挿入した後、
上記熱収縮性端末部を加熱収縮せしめることを特徴とす
るプラスチックパイプの接合方法。(1) After heating at least one end of a plastic pipe to a temperature above the softening point of the plastic, the diameter of the end is expanded, and the heat-shrinkable end is cooled while maintaining the expanded shape. After molding and inserting the end of another plastic pipe into the heat-shrinkable end,
A method for joining plastic pipes, the method comprising heating and shrinking the heat-shrinkable end portion. （２）熱収縮性端末部内面と他のプラスチックの端末部
外面の間に接着剤を介在せしめてなる特許請求の範囲第
α）項記載のプラスチックパイプの接合方法。(2) A method for joining plastic pipes according to claim .alpha., wherein an adhesive is interposed between the inner surface of the heat-shrinkable end portion and the outer surface of the end portion of another plastic.
JP58026809A 1983-02-18 1983-02-18 Method for joining plastic pipe Pending JPS59152816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58026809A JPS59152816A (en) 1983-02-18 1983-02-18 Method for joining plastic pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58026809A JPS59152816A (en) 1983-02-18 1983-02-18 Method for joining plastic pipe

Publications (1)

Publication Number Publication Date
JPS59152816A true JPS59152816A (en) 1984-08-31

Family

ID=12203613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58026809A Pending JPS59152816A (en) 1983-02-18 1983-02-18 Method for joining plastic pipe

Country Status (1)

Country Link
JP (1) JPS59152816A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010156361A (en) * 2008-12-26 2010-07-15 Nix Inc Resin pipe and connecting structure of resin pipe to joint
CN103128970A (en) * 2011-11-23 2013-06-05 明安国际企业股份有限公司 Manufacturing method for polymer composite products

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010156361A (en) * 2008-12-26 2010-07-15 Nix Inc Resin pipe and connecting structure of resin pipe to joint
CN103128970A (en) * 2011-11-23 2013-06-05 明安国际企业股份有限公司 Manufacturing method for polymer composite products

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