WO2003016768A1 - Composite pipe coated with fiber reinforced layer - Google Patents

Composite pipe coated with fiber reinforced layer Download PDF

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Publication number
WO2003016768A1
WO2003016768A1 PCT/JP2001/007003 JP0107003W WO03016768A1 WO 2003016768 A1 WO2003016768 A1 WO 2003016768A1 JP 0107003 W JP0107003 W JP 0107003W WO 03016768 A1 WO03016768 A1 WO 03016768A1
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WO
WIPO (PCT)
Prior art keywords
layer
pipe
composite pipe
fiber reinforced
composite
Prior art date
Application number
PCT/JP2001/007003
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French (fr)
Japanese (ja)
Inventor
Hiroichi Hirakawa
Original Assignee
Kabushiki Kaisha Asutekku
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 Kabushiki Kaisha Asutekku filed Critical Kabushiki Kaisha Asutekku
Priority to PCT/JP2001/007003 priority Critical patent/WO2003016768A1/en
Publication of WO2003016768A1 publication Critical patent/WO2003016768A1/en

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Classifications

    • 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
    • F16L47/02—Welded joints; Adhesive joints
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups

Definitions

  • the present invention covers the outer periphery of a resin tube having high resistance to corrosion, acid, and corrosion, such as a vinyl chloride tube, with a fiber reinforced resin (FRP) layer to provide mechanical structural strength, thermal insulation (heat retention or cold storage
  • FRP fiber reinforced resin
  • the present invention relates to a composite pipe having improved properties and weather resistance, and to a composite pipe which facilitates the operation of connecting a joint such as an elbow to the composite pipe.
  • the outer periphery of a hard polyvinyl chloride tube that is excellent in corrosion resistance and suitable for various types of blanks that particularly handle acids, alkalis, and halogens, is an FRP layer that has a high pressure resistance and an excellent impact resistance.
  • a reinforced chloride burled composite tube is being manufactured.
  • the conventional composite pipe 1 is, as shown in FIG. 4, subjected to a special treatment 1 1 on the outer peripheral surface of a rigid vinyl chloride pipe 10 in order to enhance the adhesion effect of the primer, and a primer 1 2 for bonding the FRP layer. Apply.
  • a glass fiber is impregnated with a polyester resin and laminated to form an FR P layer 2.
  • a corrosion resistant polyester resin is applied to form a surface finish layer 2 1.
  • An object of the present invention is to provide a composite pipe which can be easily connected to a joint. Disclosure of the invention
  • the present invention is characterized in that, in a composite pipe in which the outer periphery of a resin pipe is coated with a fiber reinforced layer, a separation layer is interposed between the outer peripheral surface of the resin pipe and the fiber reinforced layer.
  • the outer surface of the resin pipe can be easily exposed by cutting the fiber reinforced layer with a cutter and pulling it out. This facilitates the work of connecting the resin pipe to the joint without damaging the resin pipe. If the separation layer is a non-woven layer, there is an advantage that the formation and separation of the fiber reinforced layer can be easily performed. '
  • the separation layer is 1.0 mm or more, 100 mm or less, preferably 2 mm. If the thickness is O mm or more and 100 mm or less, the holding strength of the resin pipe by the fiber reinforced layer is not largely reduced, and the defect where the outer periphery of the resin pipe is scratched can be easily prevented at the time of cutting. . For this reason, the fiber reinforced layer of the cut portion can be easily separated while maintaining the performance of the composite tube of structural strength and heat insulation.
  • FIG. 1 is a perspective view of the composite pipe of the present invention
  • FIG. 2 is a process drawing for connecting an elbow to the composite pipe of the present invention
  • FIG. 3 is a cut section of the FRP layer cut by a cutter. It is a figure and a top view.
  • FIG. 4 is a perspective view of a conventional composite pipe
  • FIG. 5 is a process diagram for connecting an elbow to the conventional composite pipe.
  • FIGS. 1 to 3 An embodiment of the present invention will be described with reference to FIGS. 1 to 3.
  • a non-woven fabric is brazed to the outer peripheral surface of the vinyl chloride pipe 10 to form the separation layer 4, and the FRP layer 2 is formed on the outer circumference of the separation layer 4.
  • a corrosion resistant polyester resin may be coated on the outer peripheral surface of the FRP layer 2 to form a surface finish layer 21.
  • the separation layer 4 may use paper, woven fabric easy to be sheared or cut.
  • it may be a material such as gypsum which can be easily released and which can sufficiently impart the retention strength of the FR P layer 2 to the vinyl chloride pipe 10.
  • laminates of easily sheared or cut sheets or films can be used.
  • the thickness of the separation layer 4 is 2. O mm, and some resin including binder penetrates when the FRP layer 2 is provided, but a short length of FRP layer from the chloride tube 10 It is easy to pull off 2 in the axial direction.
  • the composite pipe 1 is easy to connect to a joint or the like due to the presence of the separation layer 4, and the separation layer 4 acts as a heat insulation layer, so it is excellent in heat retention or cold storage property.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

A composite pipe (1) has a removable layer (4) formed by winding a nonwoven fabric on the outer face of a vinyl chloride pipe (10) and an FRP layer (2) on the removable layer (4). This removable layer (4) may be made of not only the nonwoven fabric but also paper or an easily sheared or cut cloth. This material such as gypsum may also be the one that can be easily removed and can give a retaining force of the FRP layer (2) sufficiently to the vinyl chloride pipe (10). When an elbow (3) is connected to the composite pipe (1), a cut (13) reaching the removable layer (4) is circumferentially formed by a cutter (5), and the FRP layer (2) at the depth end of the cut (13) is gripped by hands and pulled out in the axial direction. The portion from which the FRP layer (2) is removed is fitted in the elbow (3).

Description

明細書 繊維強化層で被覆した複合管 技術分野  Composite tube coated with fiber reinforced layer
この発明は、 塩化ビニル管など耐腐食性、 耐酸性、 耐ァルカ リ性 に強い樹脂管の外周を繊維強化樹脂 （ F R P ) 層で被覆し、 機械的 な構造強度、 断熱性 （保温性または保冷性） および耐気候性を向上 させた複合管に関し、 この複合管にエルボなどの継手を接続する作 業を容易にした複合管に関する。 背景技術  The present invention covers the outer periphery of a resin tube having high resistance to corrosion, acid, and corrosion, such as a vinyl chloride tube, with a fiber reinforced resin (FRP) layer to provide mechanical structural strength, thermal insulation (heat retention or cold storage The present invention relates to a composite pipe having improved properties and weather resistance, and to a composite pipe which facilitates the operation of connecting a joint such as an elbow to the composite pipe. Background art
耐食性に優れ、 と く に酸、 アルカ リ、 ハロゲン類を扱う各種ブラ ン トに好適な硬質塩化ビニル管の外周を、 耐圧強度が大きく、 しか も耐衝撃性に優れた F R P層で F R P—体強化の塩化ビュル複合管 が製造されている。 従来の複合管 1 は、 図 4に示す如く 、 硬質塩化 ビニル管 1 0 の外周面にプライマーの接着効果を高めるため特殊処 理 1 1 を施し、 F R P層を接着するためのプライマ一 1 2 を塗布す る。 つぎに、 ガラス繊維にポリエステル樹脂を含浸し積層して F R P層 2 を形成する。 さ らに、 耐食性ポリエステル樹脂を塗布して表 面仕上げ層 2 1 を設ける。  The outer periphery of a hard polyvinyl chloride tube that is excellent in corrosion resistance and suitable for various types of blanks that particularly handle acids, alkalis, and halogens, is an FRP layer that has a high pressure resistance and an excellent impact resistance. A reinforced chloride burled composite tube is being manufactured. The conventional composite pipe 1 is, as shown in FIG. 4, subjected to a special treatment 1 1 on the outer peripheral surface of a rigid vinyl chloride pipe 10 in order to enhance the adhesion effect of the primer, and a primer 1 2 for bonding the FRP layer. Apply. Then, a glass fiber is impregnated with a polyester resin and laminated to form an FR P layer 2. Furthermore, a corrosion resistant polyester resin is applied to form a surface finish layer 2 1.
この複合管のエルボ 3など継手への接続を図 5の （ a ) 〜 （ e ) に示す。  The connection of this composite pipe to the elbow 3 and other joints is shown in (a) to (e) of Fig.5.
( a ) 複合管 1 の端部の外周を鋸などで円周方向に切り込み 1 3 を入れるとともに、 螺旋状に切り込み 1 4 を入れる。 ( b ) パーナ Bで F R P層 2が多少軟化するまで均一に加熱する (a) Cut the outer circumference of the end of composite pipe 1 with a saw etc. in the circumferential direction with a saw etc., and put a spiral with a cut 1 4. (b) Heat evenly with FRP layer 2 until slightly softened with PANA B
( c ) F R P層 2 をペンチ Pなどではさみ、 剝離する。 (c) Hold the FRP layer 2 with a pair of pliers P and separate it.
( d ) F R P層 2 を剝離した部分をサン ドぺ一パ一等を仕上げ、 先端を 4 5度面取り し、 仕上げ面に刷毛 Hなどで接着剤を塗布する  (d) Finish the part of the FRP layer 2 where the separation of the FRP layer 2 is finished, chamfer the tip 4 5 degrees, and apply the adhesive with brush H etc. on the finished surface
( e ) 仕上げ面をエルボ 3内に嵌め込むと と もに、 端面部を溶接 する。 (e) Fit the finished surface into the elbow 3 and weld the end face.
このため、 複合管とエルボ、 ベン ド、 チーズ、 ソケッ 卜などの継 手に接続する作業に手間がかかり、 更に溶接技術を要するという欠 点があった。  As a result, it takes time and labor to connect the composite pipe and joints such as elbows, bends, cheeses, and sockets, and it also has the drawback of requiring welding technology.
この発明の目的は、 継手に接続する作業が容易にできる複合管の 提供にある。 発明の開示  An object of the present invention is to provide a composite pipe which can be easily connected to a joint. Disclosure of the invention
この発明は、 樹脂管の外周を繊維強化層で被覆した複合管におい て、 樹脂管の外周面と繊維強化層との間に剝離層を介在させたこと を特徴とする。  The present invention is characterized in that, in a composite pipe in which the outer periphery of a resin pipe is coated with a fiber reinforced layer, a separation layer is interposed between the outer peripheral surface of the resin pipe and the fiber reinforced layer.
この発明では、 カ ツ ターで繊維強化層を切り、 外に抜く ことで樹 脂管の外周面を簡単に露出させることができる。 このため、 樹脂管 に傷を付けることなく 、 樹脂管を継手に接続する作業が容易になる 剝離層は不織布層であると、 繊維強化層の形成および剝離が容易 におこなえる利点がある。 '  In this invention, the outer surface of the resin pipe can be easily exposed by cutting the fiber reinforced layer with a cutter and pulling it out. This facilitates the work of connecting the resin pipe to the joint without damaging the resin pipe. If the separation layer is a non-woven layer, there is an advantage that the formation and separation of the fiber reinforced layer can be easily performed. '
剝離層は、 1 . O m m以上、 1 0 . 0 m m以下、 望ま しく は 2 . O m m以上、 1 0 . O m m以下であると、 繊維強化層による樹脂管 の保持強度をあま り低下させることがなく 、 切り込みの際に樹脂管 の外周に傷が付く不具合を容易に防止できる。 このため、 構造強度 および断熱性という複合管の性能を保持しながら、 切り込みを入れ た部分の繊維強化層の剝離が容易となる。 図面の簡単な説明 The separation layer is 1.0 mm or more, 100 mm or less, preferably 2 mm. If the thickness is O mm or more and 100 mm or less, the holding strength of the resin pipe by the fiber reinforced layer is not largely reduced, and the defect where the outer periphery of the resin pipe is scratched can be easily prevented at the time of cutting. . For this reason, the fiber reinforced layer of the cut portion can be easily separated while maintaining the performance of the composite tube of structural strength and heat insulation. Brief description of the drawings
第 1 図は、 この発明の複合管の斜視図であ り、 第 2 図は、 この発 明の複合管にエルボを接続する工程図、 第 3 図は、 カ ッ ターによる F R P層の切り込み断面図および平面図である。 第 4 図は、 従来の 複合管の斜視図であ り、 第 5図は、 従来の複合管にエルボを接続す る工程図である。 発明を実施するための最良の形態  FIG. 1 is a perspective view of the composite pipe of the present invention, FIG. 2 is a process drawing for connecting an elbow to the composite pipe of the present invention, and FIG. 3 is a cut section of the FRP layer cut by a cutter. It is a figure and a top view. FIG. 4 is a perspective view of a conventional composite pipe, and FIG. 5 is a process diagram for connecting an elbow to the conventional composite pipe. BEST MODE FOR CARRYING OUT THE INVENTION
この発明の一実施例を図 1 〜図 3 とと もに説明する。 複合管 1 は 、 塩化ビニル管 1 0 の外周面に不織布を卷付けて剝離層 4 を形成し 、 剝離層 4の外周に F R P層 2 を形成している。 F R P層 2の外周 面には、 耐食性ポリエステル樹脂を塗布して表面仕上げ層 2 1 を設 けてもよい。  An embodiment of the present invention will be described with reference to FIGS. 1 to 3. In the composite pipe 1, a non-woven fabric is brazed to the outer peripheral surface of the vinyl chloride pipe 10 to form the separation layer 4, and the FRP layer 2 is formed on the outer circumference of the separation layer 4. A corrosion resistant polyester resin may be coated on the outer peripheral surface of the FRP layer 2 to form a surface finish layer 21.
剝離層 4 は、 不織布の他に、 紙、 剪断または切断の容易な織布を 使用してもよい。 また、 石膏など剝離が容易で、 F R P層 2 による 保持力を十分に塩化ビニル管 1 0 に付与できる材料であってもよい 。 さ らに、 剪断または切断の容易なシー ト またはフィルムの積層体 も使用可能である。  In addition to non-woven fabric, the separation layer 4 may use paper, woven fabric easy to be sheared or cut. In addition, it may be a material such as gypsum which can be easily released and which can sufficiently impart the retention strength of the FR P layer 2 to the vinyl chloride pipe 10. In addition, laminates of easily sheared or cut sheets or films can be used.
図 2 の （ a ) 〜 （ d ) および図 3 は、 複合管 1 にエルボ 3 を接続 する作業工程を示す。 (A) to (d) in Fig. 2 and Fig. 3 connect elbow 3 to composite pipe 1 Show the work process to be done.
( a ) カッ ター 5で剝離層 4に達する切り込み 1 3 を周設する。 切り込み 1 3の位置は、 複合管 1 の直径に応じて、 端面から 5 c m から 1 5 c m程度の範囲で適宜に選択される。  (a) Cut the notch 1 3 that reaches the separation layer 4 with the cutter 5. The position of the incision 13 is appropriately selected in the range of about 5 cm to 15 cm from the end face according to the diameter of the composite pipe 1.
( b ) 切り込み 1 3 の先端側の F R P層 2 を手で摑んで軸方向に 引き出す。 この際に、 切り込み 1 3に楔を打ち込んだり、 F R P層 2 を木槌などてたたく と、 剝離層 4の剝離が容易になる。  (b) Pull the FRP layer 2 on the tip side of the notch 1 3 by hand and pull it out in the axial direction. At this time, if a wedge is punched into the notch 13 or the FRP layer 2 is tapped with a mallet, the detachment of the separation layer 4 becomes easy.
( c ) F R P層 2 を剝離した部分の塩化ビニル管 1 0の表面の残 りの剝離層を除去するとともに先端を 4 5度面取り し、 仕上げ面に 接着剤 6 を塗布する。  (c) Remove the remaining separation layer on the surface of the vinyl chloride pipe 10 in the part where the FR P layer 2 was separated, chamfer the tip 45 degrees, and apply the adhesive 6 to the finished surface.
( d ) 接着剤の塗面をエルボ 3内に嵌め込む。  (d) Fit the coated surface of the adhesive into the elbow 3.
剝離層 4の厚さは 2 . O m mとなっており、 F R P層 2 を設ける 際にバイ ンダーを含む樹脂が幾分が浸透しているが、 塩化ビュル管 1 0から短い長さの F R P層 2 を軸方向に引き外すことが容易に行 える。 産業上の利用可能性  The thickness of the separation layer 4 is 2. O mm, and some resin including binder penetrates when the FRP layer 2 is provided, but a short length of FRP layer from the chloride tube 10 It is easy to pull off 2 in the axial direction. Industrial applicability
この複合管 1 は、 剝離層 4の存在により継手などへの接続作業が 容易になるとともに、 剝離層 4が断熱層と して作用するため、 保温 性または保冷性に優れる。  The composite pipe 1 is easy to connect to a joint or the like due to the presence of the separation layer 4, and the separation layer 4 acts as a heat insulation layer, so it is excellent in heat retention or cold storage property.

Claims

請求の範囲 The scope of the claims
1 . 樹脂管の外周を繊維強化層で被覆した複合管において、 樹脂管 の外周面と繊維強化層との間に剝離層を介在させたことを特徴とす る複合管。  1. A composite pipe in which the outer periphery of the resin pipe is coated with a fiber reinforced layer, and a separation layer is interposed between the outer peripheral surface of the resin pipe and the fiber reinforced layer.
2 . 請求項 1 に記載の複合管において、 前記樹脂管は塩化ビニル管 であり、 前記剝離層は不織布層であることを特徴とする複合管。 2. The composite pipe according to claim 1, wherein the resin pipe is a vinyl chloride pipe, and the separation layer is a non-woven layer.
3 . 請求項 1 または 2に記載の複合管において、 前記剥離層は不織 布層は、 1 . O m m以上、 1 0 . 0 m m以下であるこ とを特徴とす る複合管。 3. The composite tube according to claim 1 or 2, wherein the release layer is a nonwoven fabric layer of not less than 1.O m m and not more than 10. 0 m m.
4 . 請求項 1 〜 3 のいずれか 1 に記載の複合管の端部の外周の所定 位置に、 前記剝離層に達する切り込みを周設し、 該切り込みから端 部側の繊維強化層を樹脂管から引き出し、 残った剝離層を除去する とともに露出した樹脂管の端部を接続部材に嵌入して接続すること を特徴とする複合管の施工方法。  4. A notch reaching the separation layer is provided at a predetermined position on the outer periphery of the end portion of the composite tube according to any one of claims 1 to 3, and the fiber reinforced layer on the end portion side from the notch is a resin tube And removing the remaining separation layer and inserting the end of the exposed resin tube into a connecting member for connection.
PCT/JP2001/007003 2001-08-13 2001-08-13 Composite pipe coated with fiber reinforced layer WO2003016768A1 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100369687C (en) * 2006-04-17 2008-02-20 江苏华阳金属管件有限公司 Surface coating used for cold extrusion shaped metallic product

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5667487U (en) * 1979-10-30 1981-06-04
JPH0560277A (en) * 1991-08-29 1993-03-09 Sekisui Chem Co Ltd Fiber reinforced resin pipe
JPH05263984A (en) * 1992-03-18 1993-10-12 Osaka Gas Co Ltd Polyolefine pipe
JPH0825506A (en) * 1994-07-21 1996-01-30 Sekisui Chem Co Ltd Synthetic resin pipe material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5667487U (en) * 1979-10-30 1981-06-04
JPH0560277A (en) * 1991-08-29 1993-03-09 Sekisui Chem Co Ltd Fiber reinforced resin pipe
JPH05263984A (en) * 1992-03-18 1993-10-12 Osaka Gas Co Ltd Polyolefine pipe
JPH0825506A (en) * 1994-07-21 1996-01-30 Sekisui Chem Co Ltd Synthetic resin pipe material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100369687C (en) * 2006-04-17 2008-02-20 江苏华阳金属管件有限公司 Surface coating used for cold extrusion shaped metallic product

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