JPS6139184Y2 - - Google Patents

Info

Publication number
JPS6139184Y2
JPS6139184Y2 JP13985882U JP13985882U JPS6139184Y2 JP S6139184 Y2 JPS6139184 Y2 JP S6139184Y2 JP 13985882 U JP13985882 U JP 13985882U JP 13985882 U JP13985882 U JP 13985882U JP S6139184 Y2 JPS6139184 Y2 JP S6139184Y2
Authority
JP
Japan
Prior art keywords
reinforced plastic
plastic layer
heat
resin
vinyl chloride
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.)
Expired
Application number
JP13985882U
Other languages
Japanese (ja)
Other versions
JPS5942383U (en
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 filed Critical
Priority to JP13985882U priority Critical patent/JPS5942383U/en
Publication of JPS5942383U publication Critical patent/JPS5942383U/en
Application granted granted Critical
Publication of JPS6139184Y2 publication Critical patent/JPS6139184Y2/ja
Granted legal-status Critical Current

Links

Description

【考案の詳細な説明】[Detailed explanation of the idea]

本考案は、温泉および給湯用配管に使用する耐
熱パイプに関するものである。 従来、耐熱パイプとしては、耐熱塩化ビニルを
使用した耐熱塩化ビニルパイプ或いは石綿繊維に
樹脂を含浸させた石綿パイプ又はフイラメントワ
インデイングパイプが使用されていた。しかし、
耐熱塩化ビニルパイプは通常85℃までしか使用で
きず、それ以上の温度で水圧がかかった場合は破
壊する。又、線膨張係数が大きいため配管工事の
際は必ず伸縮を考慮して配管をしなければならな
いため、配管作業がしにくく、その上伸縮処理が
適当でないとパイプが破壊してしまう。又、石綿
繊維にポリエステル樹脂を含浸させた石綿パイプ
では、芯材金型に石綿を捲き付け樹脂を含浸さ
せ、含浸および脱泡のために金属線でその上をら
せん状に捲き、硬化炉で硬化させ、硬化後金属線
および芯材金型を取り除くという工程が必要なた
め成型性が悪く非常に高価であり、その上アスベ
ストを主原料としているために内面が粗面であ
り、長時間使用するとスケールが付着する。 フイラメントワインデイングパイプも同様に、
芯材マンドレル(金型)に補強用のガラスを、樹
脂含浸を行ないながら規則的に必要量捲き付け、
硬化炉で硬化させた後、芯材金型を取り除くとい
う成型法によるため非常に高価になり、実用的で
ない。 本考案では、芯材に塩素化−塩化ビニル樹脂管
を使用し、この管の外側に管軸方向に添つて150
〜250本のガラスロービングを添着してポリエス
テル樹脂等の熱硬化性樹脂を含浸させ、更にその
上に別のガラス繊維を捲き付けて硬化させ、この
強化プラスチツク層の上に熱可塑性樹脂を被覆し
て成る耐熱パイプを提供せんとするものである。 本案の耐熱パイプは、塩素化−塩化ビニル管を
芯材2としてその外側に熱硬化性樹脂とガラス繊
維とより成る強化プラスチツク層3を設け更に該
強化プラスチツク層3の上に熱可塑性樹脂の被覆
層4を設けて成ることを特とするものである。 本考案の実施例を図面に基き説明すると、耐熱
パイプ1は芯材2と強化プラスチツク層3と被覆
層4とより成る。 芯材2は塩素化−塩化ビニル樹脂を押出機にて
管状に押し出したものであり、所要の内外径に成
形している。 強化プラスチツク層3は芯材2の管軸方向に
150〜250本添着したガラスロービング3aとその
上に管軸と所要角度に傾斜させながら捲き付けた
ガラス繊維3bとをポリエステル樹脂にて一本に
固着させている。 被覆層4は上記強化プラスチツク層3の上に被
覆する熱可塑性樹脂、例えば軟質塩化ビニル、低
密度ポリエチレン樹脂、ポリウレタン樹脂等で、
構成させ、押出機のクロスヘツドダイより押し出
しつつ、上記強化プラスチツク層3の外周に均一
厚さに被覆固着させるものである。 従つて、本考案の耐熱パイプ1は芯材2上に強
化プラスチツク層3と被覆層4とを積層したもの
であり、特に芯材2を塩素化−塩化ビニルで構成
させた点を主要な特徴としている。 次に、本考案の耐熱パイプの具体的実施の一例
を説明する。 外径31.0mmの塩素化−塩化ビニル管の外側に肉
厚1.5mmの強化プラスチツク層を設け、その外側
を肉厚1.0mmのポリウレタン樹脂にて被覆したも
のと、塩化ビニル管(従来製品)外径31.0mmとを
下記のような試験を行い比較した結果を第1表及
び第2図に表わす。即ち100℃の温水に30分間浸
漬した時の管長の変化(加熱収縮試験)と、曲げ
弾性係数の変化とを比較したものである。
The present invention relates to heat-resistant pipes used for hot springs and hot water supply piping. Conventionally, as heat-resistant pipes, heat-resistant vinyl chloride pipes made of heat-resistant vinyl chloride, asbestos pipes made of asbestos fibers impregnated with resin, or filament winding pipes have been used. but,
Heat-resistant PVC pipes can usually only be used up to 85 degrees Celsius, and will break if water pressure is applied to them at higher temperatures. In addition, since the coefficient of linear expansion is large, expansion and contraction must be taken into account during piping work, which makes piping work difficult, and if the expansion and contraction are not properly handled, the pipe will be destroyed. In addition, for asbestos pipes in which asbestos fibers are impregnated with polyester resin, asbestos is wrapped around a core mold to impregnate it with resin, then wrapped spirally with a metal wire for impregnation and defoaming, and then heated in a curing furnace. Because it requires a process of curing and removing the metal wire and core mold after curing, it has poor moldability and is very expensive.Furthermore, since the main material is asbestos, the inside surface is rough, so it can be used for a long time. Then scale will adhere. Similarly, filament winding pipes
The required amount of reinforcing glass is regularly wrapped around the core mandrel (mold) while impregnated with resin.
The molding method involves removing the core mold after curing in a curing furnace, which makes it very expensive and impractical. In this invention, a chlorinated vinyl chloride resin pipe is used as the core material, and a 150mm
~250 glass rovings are attached and impregnated with thermosetting resin such as polyester resin, then another glass fiber is wrapped on top of that and hardened, and this reinforced plastic layer is covered with thermoplastic resin. The purpose of this invention is to provide a heat-resistant pipe consisting of: The heat-resistant pipe of the present invention has a core material 2 made of chlorinated vinyl chloride pipe, and a reinforced plastic layer 3 made of thermosetting resin and glass fiber on the outside thereof, and furthermore, the reinforced plastic layer 3 is coated with a thermoplastic resin. This is characterized in that a layer 4 is provided. An embodiment of the present invention will be described with reference to the drawings. A heat-resistant pipe 1 is composed of a core material 2, a reinforced plastic layer 3, and a covering layer 4. The core material 2 is made by extruding a chlorinated vinyl chloride resin into a tubular shape using an extruder, and is molded to have the required inner and outer diameters. The reinforced plastic layer 3 extends in the direction of the tube axis of the core material 2.
150 to 250 glass rovings 3a attached thereto and glass fibers 3b wound thereon at a required angle with respect to the tube axis are fixed together with polyester resin. The coating layer 4 is made of a thermoplastic resin, such as soft vinyl chloride, low density polyethylene resin, polyurethane resin, etc., which is coated on the reinforced plastic layer 3.
The reinforced plastic layer 3 is coated and fixed to a uniform thickness on the outer periphery of the reinforced plastic layer 3 while being extruded from a crosshead die of an extruder. Therefore, the heat-resistant pipe 1 of the present invention has a reinforced plastic layer 3 and a coating layer 4 laminated on a core material 2, and the main feature is that the core material 2 is made of chlorinated vinyl chloride. It is said that Next, an example of a specific implementation of the heat-resistant pipe of the present invention will be described. A reinforced plastic layer with a wall thickness of 1.5 mm is provided on the outside of a chlorinated vinyl chloride pipe with an outer diameter of 31.0 mm, and the outside is covered with a polyurethane resin with a wall thickness of 1.0 mm, and a vinyl chloride pipe (conventional product) with a reinforced plastic layer on the outside. Table 1 and Figure 2 show the results of the comparison of the following tests with a diameter of 31.0 mm. That is, the change in tube length (heat shrinkage test) when immersed in hot water at 100°C for 30 minutes was compared with the change in bending elastic modulus.

【表】 ここで加熱 原管の長さ−加熱後の管長
[Table] Length of original tube heated here - Length of tube after heating
=

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 塩素化−塩化ビニル管を芯材2としてその外側
に熱硬化性樹脂とガラス繊維とからなる強化プラ
スチツク層3を設けると共に該強化プラスチツク
層3の上に熱可塑性樹脂からなる被覆層4を設け
たことを特徴とする耐熱パイプ。
Using a chlorinated vinyl chloride pipe as the core material 2, a reinforced plastic layer 3 made of a thermosetting resin and glass fiber was provided on the outside thereof, and a covering layer 4 made of a thermoplastic resin was provided on the reinforced plastic layer 3. A heat-resistant pipe characterized by:
JP13985882U 1982-09-13 1982-09-13 heat resistant pipe Granted JPS5942383U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13985882U JPS5942383U (en) 1982-09-13 1982-09-13 heat resistant pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13985882U JPS5942383U (en) 1982-09-13 1982-09-13 heat resistant pipe

Publications (2)

Publication Number Publication Date
JPS5942383U JPS5942383U (en) 1984-03-19
JPS6139184Y2 true JPS6139184Y2 (en) 1986-11-11

Family

ID=30313335

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13985882U Granted JPS5942383U (en) 1982-09-13 1982-09-13 heat resistant pipe

Country Status (1)

Country Link
JP (1) JPS5942383U (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039591Y2 (en) * 1985-06-21 1991-03-11
JP5253027B2 (en) * 2008-07-23 2013-07-31 オリンパス株式会社 Endoscope guide tube and endoscope system
JP2015072068A (en) * 2014-11-05 2015-04-16 順造 玉利 Method for preventing adhesion of sulphur or the like

Also Published As

Publication number Publication date
JPS5942383U (en) 1984-03-19

Similar Documents

Publication Publication Date Title
JPH0544909B2 (en)
US3377657A (en) Apparatus for molding a reinforced hollow plastic article
JPS6139184Y2 (en)
US3141052A (en) Method of forming seamless hollow plastic shapes
JPS61220828A (en) Manufacture of curved pipe, made of fiber reinforced plastic and having square section
JP3375375B2 (en) Method for producing fiber-reinforced resin tubular body
JPS621814B2 (en)
JPH0146753B2 (en)
JPS625055B2 (en)
US3436289A (en) Method of making a corrugated tube of fiber-reinforced plastic material
JPH038864Y2 (en)
JPH0147761B2 (en)
WO1992008594A1 (en) A method and an apparatus for the manufacture of moulded components on thermally expandable cores
JPH0137259B2 (en)
JPS58119822A (en) Method of molding reinforced resin bent pipe
JPH0347730A (en) Lining material for reverse lining
JPS612540A (en) Manufacture of fiber reinforced resin pipe
JP3471837B2 (en) Manufacturing method of composite member
JPS6347614B2 (en)
JPS61201980A (en) Manufacture of high-stiffness pipe
JPH0225776B2 (en)
JPH11342545A (en) Manufacture of pipe for heat exchanger
SU1666336A1 (en) Method for manufacture of hollow articles from composite materials
JP2530808Y2 (en) Tubular body
JPS641593Y2 (en)