JP2001108188A - Fluid transferring heat insulating tube and its manufacturing method - Google Patents
Fluid transferring heat insulating tube and its manufacturing methodInfo
- Publication number
- JP2001108188A JP2001108188A JP28356399A JP28356399A JP2001108188A JP 2001108188 A JP2001108188 A JP 2001108188A JP 28356399 A JP28356399 A JP 28356399A JP 28356399 A JP28356399 A JP 28356399A JP 2001108188 A JP2001108188 A JP 2001108188A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- tube
- rubber
- layer
- foamed
- 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.)
- Granted
Links
Landscapes
- Thermal Insulation (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水蒸気等の加熱気
体、温水、液状加熱薬品などの加熱液体を移送する際に
用いる流体移送保温チューブ及びその製造方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid transfer heat retaining tube used for transferring a heated gas such as steam, hot water, or a heated liquid such as a liquid heating chemical, and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】水蒸気等の加熱気体や、温水、液状加熱
薬品などの加熱液体を移送する場合、樹脂チューブの外
面を発泡樹脂からなる保温層で被覆した流体移送保温チ
ューブが一般に用いられている。このような流体移送保
温チューブは、従来、樹脂チューブと発泡樹脂からなる
チューブ状の保温層とを別々に作成しておき、樹脂チュ
ーブの外径と発泡樹脂保温チューブの内径とをほぼ等し
くして、樹脂チューブを発泡樹脂保温チューブ内へ圧入
するか、あるいは発泡樹脂保護チューブの内径を樹脂チ
ューブの外径よりも大きくして、樹脂チューブを発泡樹
脂保温チューブ内へ挿入することにより作成していた。
このような方法で流体移送保温チューブを作成すると、
前者の場合は、樹脂チューブを発泡樹脂保温チューブ内
へ圧入する作業が困難であり、チューブの長さが高々３
０ｍまでが限界であって、長尺チューブの製造は実質的
に不可能であった。一方、後者の場合は、樹脂チューブ
と発泡樹脂保温チューブとの間に空隙が生じ、断熱、保
温効果が不均一になり易いという問題があった。長尺の
流体移送保温チューブを連続的に作成する方法として
は、樹脂チューブ上に発泡樹脂を押出被覆して発泡樹脂
保温層を形成させる方法が考えられるが、この方法によ
ると、加硫時に押出被覆された発泡樹脂が直径方向に膨
らむと共に、長手方向に伸びようとし、その際、発泡樹
脂が内側の樹脂チューブ表面を円滑に滑らず、スティッ
ク・スリップが生じ、その結果、図３に示すように、樹
脂チューブ１上の発泡樹脂保温層２にくびれが発生す
る。このようなくびれの発生は、断熱、保温性能の悪化
を招くと共に、外観も不良となる。また、樹脂チューブ
と発泡樹脂保温層とをプライマー層を介して接着してお
けば、加硫時に発泡樹脂の長手方向への伸びが阻止さ
れ、前述のようなスティック・スリップが起らず、発泡
樹脂保温層にくびれが生ずるようなことはないと考えら
れるが、樹脂チューブと発泡樹脂保温層とが接着されて
いるため、継手などでチューブを接続する際に、発泡樹
脂保温層を樹脂チューブから剥ぎ取るいわゆる端末処理
が困難となり、使用時の作業性が著しく低下するという
問題が生ずる。2. Description of the Related Art When transferring a heated gas such as water vapor or a heated liquid such as hot water or a liquid heating chemical, a fluid transfer heat insulation tube in which the outer surface of a resin tube is covered with a heat insulation layer made of foamed resin is generally used. . Conventionally, such a fluid transfer heat insulating tube is prepared by separately forming a resin tube and a tube-shaped heat insulating layer made of foamed resin, and making the outer diameter of the resin tube substantially equal to the inner diameter of the foamed resin heat insulating tube. It was created by pressing the resin tube into the foamed resin insulation tube, or making the inner diameter of the foamed resin protection tube larger than the outer diameter of the resin tube, and inserting the resin tube into the foamed resin insulation tube. .
When a fluid transfer insulation tube is made in this way,
In the former case, it is difficult to press the resin tube into the foamed resin insulation tube, and the length of the tube is at most three.
Since the limit is 0 m, production of a long tube was practically impossible. On the other hand, in the case of the latter, there is a problem that a gap is formed between the resin tube and the foamed resin heat retaining tube, and the heat insulation and heat retaining effects are likely to be uneven. As a method of continuously forming a long fluid transfer heat insulation tube, a method of forming a foamed resin insulation layer by extruding a foamed resin on a resin tube can be considered. The coated foam resin expands in the diameter direction and tends to expand in the longitudinal direction. At this time, the foam resin does not smoothly slide on the inner resin tube surface, and stick-slip occurs, as a result, as shown in FIG. Then, constriction occurs in the foamed resin heat insulating layer 2 on the resin tube 1. The occurrence of such constriction causes deterioration of heat insulation and heat retention performance, and also results in poor appearance. In addition, if the resin tube and the foamed resin insulation layer are adhered via the primer layer, the foamed resin is prevented from elongating in the longitudinal direction at the time of vulcanization. Although it is considered that constriction does not occur in the resin insulation layer, since the resin tube and the foamed resin insulation layer are bonded, when connecting the tube with a joint, etc., the foamed resin insulation layer is separated from the resin tube. A problem arises in that the so-called terminal treatment is difficult to peel off, and the workability during use is significantly reduced.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記従来技
術の問題点を解消し、発泡樹脂保温層にくびれが発生せ
ず、しかも端末処理が容易な長尺の流体移送保温チュー
ブ及びその製造方法を提供することを課題とするもので
ある。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, does not cause constriction in the foamed resin heat-insulating layer, and is easy to terminate. It is an object to provide a method.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、上記課題
を解決するために、鋭意検討を重ねた結果、樹脂チュー
ブと発泡樹脂保温層との間に、樹脂チューブには接着す
ることなく固定され、発泡樹脂保温層には接着する中間
層を設けることを着想し、本発明を完成するに至った。
即ち、本発明によれば、 （１）樹脂チューブの外面を発泡樹脂・ゴム保温層で被
覆した流体移送保温チューブにおいて、該樹脂チューブ
と該発泡樹脂・ゴム保温層との間に、該樹脂チューブに
は接着することなく固定されており、かつ該発泡樹脂・
ゴム保温層には接着した中間層を設けたことを特徴とす
る流体移送保温チューブ； （２）中間層が、発泡樹脂・ゴム保温層を構成する樹脂
・ゴムと同種のエラストマー樹脂・ゴムからなることを
特徴とする上記（１）記載の流体移送保温チューブ； （３）樹脂チューブがフッ素樹脂チューブ、発泡樹脂・
ゴム保温層が発泡シリコーン樹脂・ゴム層、中間層がシ
リコーンゴム層であることを特徴とする上記（２）記載
の流体移送保温チューブ； （４）中間層が、金属箔の巻回層であることを特徴とす
る上記（１）記載の流体移送保温チューブ； （５）樹脂チューブがフッ素樹脂チューブ、発泡樹脂・
ゴム保温層が発泡シリコーン樹脂・ゴム層であることを
特徴とする上記（４）記載の流体移送保温チューブ； （６）金属箔がアルミニウム箔テ−プである上記（４）
又は（５）記載の流体移送保温チューブ； （７）中間層の内面又は外面に金属箔層を設けたことを
特徴とする上記（１）記載の流体移送保温チューブ； （８）中間層の内面又は外面に編組シールド層を設けた
ことを特徴とする上記（１）記載の流体移送保温チュー
ブ； （９）発泡樹脂・ゴム保温層の外面に保護被覆層を設け
たことを特徴とする上記（１）記載の流体移送保温チュ
ーブ； （１０）樹脂チューブの外面に、該樹脂チューブとは接
着することなく固定され、加硫によって発泡樹脂・ゴム
保温層と接着する中間層を被覆し、その上に該発泡樹脂
・ゴム保温層を押出被覆した後、加硫して該中間層と該
発泡樹脂・ゴム保温層とを接着させることを特徴とする
流体移送保温チューブの製造方法； （１１）中間層が、発泡樹脂・ゴム保温層を構成する樹
脂・ゴムと同種のエラストマー樹脂・ゴムからなること
を特徴とする上記（１０）記載の流体移送保温チューブ
の製造方法； （１２）樹脂チューブがフッ素樹脂チューブ、発泡樹脂
・ゴム保温層が発泡シリコーン樹脂・ゴム層、中間層が
シリコーンゴム層であることを特徴とする上記（１１）
記載の流体移送保温チューブの製造方法； （１３）樹脂チューブの外面に金属箔を巻回して固定し
た中間層を形成し、その上に発泡樹脂・ゴム保温層を押
出被覆した後、加硫して該中間層と該発泡樹脂・ゴム保
温層とを接着させることを特徴とする流体移送保温チュ
ーブの製造方法； （１４）樹脂チューブがフッ素樹脂チューブ、発泡樹脂
・ゴム保温層が発泡シリコーン樹脂・ゴム層であること
を特徴とする上記（１３）記載の流体移送保温チューブ
の製造方法；及び （１５）金属箔がアルミニウム箔テ−プであることを特
徴とする上記（１３）又は（１４）記載の流体移送保温
チューブの製造方法が提供される。Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that the resin tube does not adhere to the resin tube between the resin tube and the foamed resin insulation layer. With the idea of providing an intermediate layer that is fixed and adhered to the foamed resin insulation layer, the present invention has been completed.
That is, according to the present invention, (1) in a fluid transfer heat insulation tube in which the outer surface of a resin tube is covered with a foamed resin / rubber heat insulation layer, the resin tube is interposed between the resin tube and the foamed resin / rubber heat insulation layer. Is fixed without bonding, and the foamed resin
A fluid transfer heat-insulating tube characterized in that an adhesive intermediate layer is provided on the rubber heat-insulating layer; (2) the intermediate layer is made of a foamed resin, a rubber-insulating resin of the same kind as the rubber constituting the rubber heat-insulating layer. (3) The resin tube is a fluororesin tube or a foamed resin tube.
(2) The fluid transfer heat insulating tube according to the above (2), wherein the rubber heat insulating layer is a foamed silicone resin / rubber layer, and the intermediate layer is a silicone rubber layer. (4) The intermediate layer is a wound layer of metal foil. (5) The fluid transfer heat insulation tube according to (1) above, wherein (5) the resin tube is a fluororesin tube, a foamed resin tube,
(4) The fluid transfer heat insulation tube according to the above (4), wherein the rubber heat insulation layer is a foamed silicone resin / rubber layer; (6) The metal foil is an aluminum foil tape (4).
Or (7) the fluid transfer heat insulating tube according to (1), wherein a metal foil layer is provided on the inner surface or the outer surface of the intermediate layer. (8) The inner surface of the intermediate layer. Or a fluid transfer heat insulating tube according to the above (1), wherein a braided shield layer is provided on the outer surface; (9) a protective coating layer provided on the outer surface of the foamed resin / rubber heat insulating layer. (10) A fluid transfer heat insulation tube described in (1); (10) An outer layer of the resin tube is fixed to the outer surface of the resin tube without adhering to the resin tube, and is coated with an intermediate layer that adheres to the foamed resin / rubber heat insulation layer by vulcanization. (11) a method for manufacturing a fluid transfer heat insulating tube, comprising: extruding and coating the foamed resin / rubber heat insulating layer, and then vulcanizing to bond the intermediate layer and the foamed resin / rubber heat insulating layer; The layer is made of foam resin and rubber. (10) The method for producing a fluid transfer heat insulating tube according to the above (10), wherein the resin tube is made of an elastomer resin / rubber of the same kind as the resin / rubber constituting the layer; (11) wherein the layer is a foamed silicone resin / rubber layer, and the intermediate layer is a silicone rubber layer.
(13) A method for manufacturing a fluid transfer heat insulating tube as described above; (13) A metal foil is wound around the outer surface of the resin tube to form a fixed intermediate layer, and a foamed resin / rubber heat insulating layer is extrusion-coated thereon, followed by vulcanization. (14) a method for manufacturing a fluid transfer heat insulating tube, wherein the intermediate layer and the foamed resin / rubber heat insulating layer are bonded to each other; (13) The method for producing a fluid transfer insulating tube according to the above (13), which is a rubber layer; and (15) the above (13) or (14), wherein the metal foil is an aluminum foil tape. A method for manufacturing the described fluid transfer insulated tube is provided.
【０００５】[0005]
【発明の実施の形態】本発明の流体移送保温チューブ
は、図１に示すように、樹脂チューブ１の外面を発泡樹
脂・ゴム保温層２で被覆し、該樹脂チューブ１と該発泡
樹脂・ゴム保温層２との間に、該樹脂チューブ１には接
着することなく固定され、該発泡樹脂・ゴム保温層２に
は接着した中間層３を設けたものである。樹脂チューブ
１の材質は、移送する流体の種類に応じて適当な樹脂を
用いることができ、例えば、ポリオレフィン樹脂、ポリ
塩化ビニル樹脂、フッ素樹脂、ポリエステル樹脂、ポリ
アミド樹脂、ポリイミド樹脂、ポリウレタン樹脂、ポリ
エチレン樹脂等、押出成形可能な樹脂を用いることがで
きるが、特に、耐熱性、耐薬品性に優れていることか
ら、フッ素樹脂が好適に用いられる。フッ素樹脂として
は、例えば、テトラフルオロエチレン―パーフルオロア
ルキルビニルエーテル共重合体（ＰＦＡ）、ポリテトラ
フルオロエチレン（ＰＴＦＥ）、テトラフルオロエチレ
ン―ヘキサフルオロプロピレン共重合体（ＦＥＰ）、
テトラフルオロエチレン―エチレン共重合体（Ｅ
／ＴＦＥ）、ポリビニリデンフルオライド（ＰＶＤ
Ｆ）、ポリクロロトリフルオロエチレン（ＰＣＴＦ
Ｅ）、クロロトリフルオロエチレン―エチレン共重合体
（Ｅ／ＣＴＦＥ）などが挙げられる。樹脂チューブ１の
外径、厚さなどは、流体移送保温チューブの使用目的に
応じて、適宜設定される。また、発泡樹脂・ゴム保温層
２を構成する発泡樹脂・ゴムとしては、使用環境の温度
に応じて、通常、保温材として用いられている発泡樹脂
・ゴム、例えば、発泡シリコーンゴム、発泡ウレタン樹
脂及び各種ゴム・樹脂の発泡体を用いることができ、特
に、断熱性、保温性、可撓性に優れていることから、発
泡シリコーンゴムが好ましく用いられる。発泡樹脂・ゴ
ム保温層２の厚さは、流体移送保温チューブの使用目的
に応じて、適宜設定される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a fluid transfer heat insulating tube according to the present invention has an outer surface of a resin tube 1 covered with a foamed resin / rubber heat insulating layer 2, and the resin tube 1 and the foamed resin / rubber. The foamed resin / rubber heat insulating layer 2 is provided with an intermediate layer 3 which is fixed between the heat insulating layer 2 and the resin tube 1 without bonding. As the material of the resin tube 1, an appropriate resin can be used according to the type of the fluid to be transferred. For example, polyolefin resin, polyvinyl chloride resin, fluorine resin, polyester resin, polyamide resin, polyimide resin, polyurethane resin, polyethylene An extrudable resin such as a resin can be used. In particular, a fluororesin is preferably used because of its excellent heat resistance and chemical resistance. Examples of the fluorine resin include tetrafluoroethylene-perfluoroalkylvinyl ether copolymer (PFA), polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP),
Tetrafluoroethylene-ethylene copolymer (E
/ TFE), polyvinylidene fluoride (PVD
F), polychlorotrifluoroethylene (PCTF
E), chlorotrifluoroethylene-ethylene copolymer (E / CTFE) and the like. The outer diameter, thickness, and the like of the resin tube 1 are appropriately set according to the purpose of use of the fluid transfer heat insulation tube. Further, as the foamed resin / rubber constituting the foamed resin / rubber heat insulating layer 2, foamed resin / rubber usually used as a heat insulator, for example, foamed silicone rubber, urethane foamed resin, depending on the temperature of the use environment And foams of various rubbers and resins can be used. In particular, foamed silicone rubber is preferably used because it is excellent in heat insulation, heat retention and flexibility. The thickness of the foamed resin / rubber heat insulation layer 2 is appropriately set according to the intended use of the fluid transfer heat insulation tube.
【０００６】樹脂チューブ１と発泡樹脂・ゴム保温層２
との間に設ける中間層３は、発泡樹脂・ゴム保温層２に
は強固に接着し、しかも、樹脂チューブ１には接着せ
ず、かつ、加硫時に発泡樹脂・ゴム保温層２が長手方向
に伸びようとするのを抑制するのに十分な程度に樹脂チ
ューブ１に固定されていることが必用である。樹脂チュ
ーブ１と発泡樹脂・ゴム保温層２との間に設ける中間層
３としては、樹脂チューブ１には接着することなく固定
され、発泡樹脂・ゴム保温層２には接着したものであれ
ば、特に限定されず、任意の有機、無機材料からなる層
を用いることができる。例えば、中間層３として、樹脂
チューブ１とは異質で樹脂チューブ１に対して接着性が
なく、発泡樹脂・ゴム保温層２とは同種で発泡樹脂・ゴ
ム保温層２に対して接着性を有するエラストマー樹脂・
ゴムを使用すれば、加硫によって、中間層３は発泡樹脂
・ゴム保温層２と強固に接着し、しかも、樹脂チューブ
１には接着することなく、その弾性によって樹脂チュー
ブ１に押圧固定され、加硫時に発泡樹脂・ゴム保温層２
が長手方向に伸びようとするのを抑制することができ
る。その好適な例として、樹脂チューブ１にフッ素樹脂
を、発泡樹脂・ゴム保温層２に発泡シリコーン樹脂を用
いた場合、中間層３にシリコーンソリッドゴムを使用す
る例が挙げられる。シリコーンソリッドゴムは、発泡樹
脂・ゴム保温層２の発泡シリコーン樹脂に対しては接着
性を有しており、一方、樹脂チューブ１のフッ素樹脂に
対しては接着性がなく、しかもフッ素樹脂チューブ１に
対してその弾性により押圧固定されているので、加硫時
における発泡樹脂・ゴム保温層２の長手方向への伸びを
防止し、発泡樹脂・ゴム保温層２にくびれが発生せず、
更に、発泡樹脂・ゴム保温層２は、シリコーンソリッド
ゴムを介して樹脂チューブ１と接着しておらず、端末処
理が容易となる。また、中間層３をアルミニウム箔など
の金属箔の巻回層で構成することもできる。金属箔は、
樹脂類との接着性がないことが多いので、発泡樹脂・ゴ
ム保温層２との接着は、接着剤を用いて接着すればよ
く、また、金属箔は、そのテープ巻きによる圧力によっ
て樹脂チューブ１に固定され、加硫時に発泡樹脂・ゴム
保温層２が長手方向に伸びようとするのを抑制すること
ができる。更に、発泡樹脂・ゴム保温層２は、金属箔を
介して樹脂チューブ１と接着しておらず、端末処理が容
易となる。特に、上記の樹脂チューブ１にフッ素樹脂
を、発泡樹脂・ゴム保温層２に発泡シリコーン樹脂を用
いた例において、アルミニウム箔テープなどの金属箔を
樹脂チューブ１に巻き付けて中間層３として使用するこ
とも好ましい。アルミニウム箔などの金属箔は、水素結
合により発泡樹脂・ゴム保温層２の発泡シリコーン樹脂
と結合し、樹脂チューブ１のフッ素樹脂とは接着しな
い。発泡樹脂・ゴム保温層２と金属箔との間の接着力を
更に高める必要がある場合は、金属箔の表面に接着剤を
使用することもできる。また、金属箔は、そのテープ巻
きによる圧力によって樹脂チューブ１に固定され、加硫
時に発泡樹脂・ゴム保温層２が長手方向に伸びようとす
るのを防止するが、金属箔の表面に接着剤を塗布してお
くと、加硫時の加熱によって、金属箔のテープ巻きの重
なった部分が互いに接着し、金属箔のずれ防止を一層強
固なものとすることができるので好ましい。中間層３と
して、樹脂チューブ１と発泡樹脂・ゴム保温層２の両方
に接着しない物質を用いる場合は、発泡樹脂・ゴム保温
層２と中間層３とを接着剤で接着すればよい。接着剤と
しては、従来公知の接着剤を用いることができ、例え
ば、エポキシ樹脂系接着剤、シリコーンゴム系接着剤な
ど各種樹脂・ゴム系接着剤などを挙げることができる。
中間層３の厚さは、通常、１ｍｍ以下、発泡樹脂・ゴム
保温層２の厚さの１／１００〜１／１０が好ましく、特
に３／１００〜８／１００が好ましい。この厚さが厚す
ぎると、保温チューブの断熱特性が低下する傾向があ
り、薄すぎると、加硫時における発泡樹脂・ゴム保温層
２の長手方向への伸びを防止する効果が低下し、発泡樹
脂・ゴム保温層２にくびれが発生し易くなる。また、中
間層３の内面又は外面に、断熱効果を高めるために、金
属箔層を設けてもよい。中間層３の内面に設ける場合
は、中間層３と接着（必要に応じて接着剤を使用）し、
樹脂チューブ１とは接着しない金属箔を用い、樹脂チュ
ーブ１への固定は、金属箔のテープ巻き圧により行えば
よい。一方、中間層の外面に設ける場合は、発泡樹脂・
ゴム保温層２と中間層３の両方に接着（必要に応じて接
着剤を使用）する金属箔を用いればよい。なお、金属箔
のテープ巻きによる圧力によって金属箔が中間層３に強
固に固定される場合は、接着剤の使用は不要である。中
間層３の内面又は外面に設ける金属箔としては、アルミ
ニウム箔、などの断熱効果の大きい金属箔が用いられ
る。勿論、中間層３として金属箔を用いる場合は、この
断熱用金属箔は敢えて使用しなくてもよい。更に、流体
移送保温チューブの用途によっては、その耐圧性能を向
上させるために、中間層３の内面又は外面に編組シール
ド層を設けることもできる。編組シールドとしては、通
常、スズメッキ軟銅線、ニッケルメッキ軟銅線、銀メッ
キ軟銅線、ステンレス線などの金属の編組シールドが用
いられ、その配設方法は、上述の断熱用金属箔の場合と
同様である。但し、編組シールドを設けた場合は、端末
処理の際のカット性、加工性が低下するので、その点を
考慮したうえで用いることが必要である。また、発泡樹
脂・ゴム保温層２は、発泡しているため機械的強度が低
下しており、損傷し易く、また、表面がポーラスな構造
となっているため、水や薬品などの液体が浸透し易いと
いう問題があるので、その外面に保護被覆層を設けて、
損傷及び液体の浸透を防止するのが好ましい。保護被覆
層としては、金属、セラミックスなどの無機材料層、ポ
リオレフィン、ポリ塩化ビニル、ポリエステル、ポリア
ミド、シリコーン樹脂、フッ素樹脂などの合成樹脂を始
めとする有機材料層が、流体移送保温チューブの用途に
応じて、発泡樹脂・ゴム保温層２との接着性を考慮しな
がら適宜用いられる。保護被覆層の厚さは、通常、０．
０１〜０．５ｍｍ程度が適当である。Resin tube 1 and foamed resin / rubber heat insulating layer 2
Is firmly adhered to the foamed resin / rubber insulating layer 2, not adhered to the resin tube 1, and the foamed resin / rubber insulating layer 2 is vulcanized during vulcanization. It is necessary that the resin tube 1 be fixed to the resin tube 1 to a sufficient extent to prevent the resin tube 1 from expanding. As the intermediate layer 3 provided between the resin tube 1 and the foamed resin / rubber heat insulating layer 2, if it is fixed without adhering to the resin tube 1 and is adhered to the foamed resin / rubber heat insulating layer 2, There is no particular limitation, and any layer made of an organic or inorganic material can be used. For example, the intermediate layer 3 is different from the resin tube 1 and has no adhesiveness to the resin tube 1, and has the same type as the foamed resin / rubber insulating layer 2 and has an adhesive property to the foamed resin / rubber insulating layer 2. Elastomer resin
If rubber is used, the intermediate layer 3 is firmly adhered to the foamed resin / rubber heat insulating layer 2 by vulcanization, and is pressed and fixed to the resin tube 1 by its elasticity without adhering to the resin tube 1, Foam resin / rubber insulation layer 2 during vulcanization
Can be prevented from extending in the longitudinal direction. As a preferred example, when a fluorine resin is used for the resin tube 1 and a foamed silicone resin is used for the foamed resin / rubber heat insulating layer 2, an example in which silicone solid rubber is used for the intermediate layer 3 is given. The silicone solid rubber has an adhesive property to the foamed silicone resin of the foamed resin / rubber heat insulating layer 2, but has no adhesiveness to the fluororesin of the resin tube 1, and the Is pressed and fixed by its elasticity, so that the foamed resin / rubber heat insulating layer 2 is prevented from elongating in the longitudinal direction during vulcanization, and the foamed resin / rubber heat insulating layer 2 is not constricted.
Further, the foamed resin / rubber heat insulating layer 2 is not adhered to the resin tube 1 via the silicone solid rubber, so that the terminal treatment is facilitated. Further, the intermediate layer 3 may be formed of a wound layer of a metal foil such as an aluminum foil. Metal foil is
Since there is often no adhesiveness with resins, the adhesive with the foamed resin / rubber heat insulating layer 2 may be made by using an adhesive, and the metal foil is made of resin tube 1 by the pressure of the tape winding. To prevent the foamed resin / rubber heat insulating layer 2 from extending in the longitudinal direction during vulcanization. Further, the foamed resin / rubber heat insulating layer 2 is not adhered to the resin tube 1 via the metal foil, so that the terminal treatment becomes easy. In particular, in the case where the above-mentioned resin tube 1 is made of a fluororesin and the foamed resin / rubber heat insulating layer 2 is made of a foamed silicone resin, a metal foil such as an aluminum foil tape is wound around the resin tube 1 and used as the intermediate layer 3. Is also preferred. A metal foil such as an aluminum foil is bonded to the foamed resin of the foamed resin / rubber heat insulating layer 2 by hydrogen bonding and does not adhere to the fluororesin of the resin tube 1. If it is necessary to further increase the adhesive strength between the foamed resin / rubber heat insulating layer 2 and the metal foil, an adhesive can be used on the surface of the metal foil. Further, the metal foil is fixed to the resin tube 1 by the pressure of the tape winding, and prevents the foamed resin / rubber heat insulating layer 2 from extending in the longitudinal direction during vulcanization. Is preferably applied because the overlapping portions of the metal foil tape windings adhere to each other due to heating during vulcanization, and the metal foil can be more securely prevented from being displaced. When a substance that does not adhere to both the resin tube 1 and the foamed resin / rubber heat insulating layer 2 is used as the intermediate layer 3, the foamed resin / rubber heat insulating layer 2 and the intermediate layer 3 may be bonded with an adhesive. As the adhesive, a conventionally known adhesive can be used, and examples thereof include various resin / rubber adhesives such as an epoxy resin adhesive and a silicone rubber adhesive.
The thickness of the intermediate layer 3 is usually 1 mm or less, preferably 1/100 to 1/10 of the thickness of the foamed resin / rubber heat insulating layer 2, and particularly preferably 3/100 to 8/100. If the thickness is too thick, the heat insulating properties of the heat insulating tube tend to decrease. If the thickness is too small, the effect of preventing the foamed resin / rubber heat insulating layer 2 from elongating in the longitudinal direction at the time of vulcanization is reduced. Constriction easily occurs in the resin / rubber heat insulating layer 2. Further, a metal foil layer may be provided on the inner surface or the outer surface of the intermediate layer 3 in order to enhance the heat insulating effect. When provided on the inner surface of the intermediate layer 3, it is bonded to the intermediate layer 3 (using an adhesive if necessary),
A metal foil that does not adhere to the resin tube 1 is used, and fixing to the resin tube 1 may be performed by a tape winding pressure of the metal foil. On the other hand, if it is provided on the outer surface of the intermediate layer,
A metal foil that adheres to both the rubber heat insulating layer 2 and the intermediate layer 3 (using an adhesive if necessary) may be used. In the case where the metal foil is firmly fixed to the intermediate layer 3 by the pressure of the tape winding of the metal foil, the use of an adhesive is unnecessary. As the metal foil provided on the inner surface or the outer surface of the intermediate layer 3, a metal foil having a large heat insulating effect such as an aluminum foil is used. Of course, when a metal foil is used as the intermediate layer 3, this metal foil for heat insulation need not be used. Further, a braided shield layer can be provided on the inner surface or the outer surface of the intermediate layer 3 in order to improve the pressure resistance performance of the fluid transfer heat retaining tube depending on the application. As the braided shield, usually, a tin-plated soft copper wire, a nickel-plated soft copper wire, a silver-plated soft copper wire, a braided shield of a metal such as a stainless steel wire is used, and the disposing method is the same as the case of the metal foil for heat insulation described above. is there. However, when a braided shield is provided, cutability and workability at the time of terminal processing are reduced, so that it is necessary to use the braided shield in consideration of this point. In addition, the foamed resin / rubber heat insulating layer 2 is foamed and has a reduced mechanical strength, is easily damaged, and has a porous surface, so that liquids such as water and chemicals penetrate. There is a problem that it is easy to do, so provide a protective coating layer on the outer surface
It is preferred to prevent damage and liquid penetration. As protective coating layers, inorganic material layers such as metals and ceramics, and organic material layers such as synthetic resins such as polyolefin, polyvinyl chloride, polyester, polyamide, silicone resin, and fluororesin are used for fluid transfer and heat retention tubes. Accordingly, it is appropriately used in consideration of the adhesiveness to the foamed resin / rubber heat insulating layer 2. The thickness of the protective coating layer is usually set at 0.
About 01 to 0.5 mm is appropriate.
【０００７】本発明の流体移送保温チューブを製造する
には、樹脂チューブ１の外面に、該樹脂チューブ１とは
接着することなく固定され、加硫によって発泡樹脂・ゴ
ム保温層２と接着する中間層３を被覆し、その上に該発
泡樹脂・ゴム保温層２を押出被覆した後、加硫して該中
間層３と該発泡樹脂・ゴム保温層２とを接着させればよ
い。中間層３として、樹脂チューブ１とは異質で樹脂チ
ューブ１に対して接着性がなく、発泡樹脂・ゴム保温層
２とは同種で発泡樹脂・ゴム保温層２に対して接着性を
有するエラストマー樹脂を使用する場合は、樹脂チュー
ブ１の外面にエラストマー樹脂をコーティングし、その
上に該発泡樹脂・ゴム保温層２を押出被覆した後、加硫
して該中間層３と該発泡樹脂・ゴム保温層２とを接着さ
せる。例えば、本発明の好ましい例である、樹脂チュー
ブ１にフッ素樹脂を、発泡樹脂・ゴム保温層２に発泡シ
リコーン樹脂を、中間層３にシリコーンゴムを使用する
場合は、フッ素樹脂チューブ１の外面にシリコーンソリ
ッドゴムをコーティングし、その上に発泡シリコーン樹
脂を押出被覆した後、１５０℃〜２５０℃の温度で、１
０分〜１２０分間加熱加硫して、シリコーンソリッドゴ
ムと発泡シリコーン樹脂とを接着させる。また、中間層
３として、アルミニウム箔テ−プなどの金属箔の巻回層
を使用する場合は、樹脂チューブ１の外面に金属箔を巻
回して固定した中間層３を形成し、その上に発泡樹脂・
ゴム保温層２を押出被覆した後、加硫して該中間層３と
該発泡樹脂・ゴム保温層２とを接着させる。例えば、本
発明の好ましい例である、樹脂チューブ１にフッ素樹脂
を、発泡樹脂・ゴム保温層２に発泡シリコーン樹脂を、
中間層３にアルミニウム箔テープを使用する場合は、フ
ッ素樹脂チューブ１の外面にアルミニウム箔テ−プを滑
らないようにしっかりと巻回して固定し、その上に発泡
シリコーン樹脂を押出被覆した後、１５０℃〜２５０℃
の温度で、１０分〜１０時間加熱加硫して、アルミニウ
ム箔テープと発泡シリコーン樹脂とを水素結合により接
着させる。また、発泡シリコーン樹脂とアルミニウム箔
テープとの間の接着力を更に高め、アルミニウム箔テー
プの巻き重ねのずれを防止するために、必要に応じて、
アルミニウム箔テープと発泡シリコーン樹脂との間に、
エポキシ樹脂系接着剤、シリコーンゴム系接着剤など各
種樹脂・ゴム系接着剤などの接着剤を塗布してもよい。
また、必要に応じて、中間層３の内面又は外面に金属箔
層若しくは編組シールド層を設けることよいもできる。
更に、発泡樹脂・ゴム保温層２の外面に、必要に応じ
て、前述の各種材料からなる保護被覆層を、コーティン
グ、押出被覆などの任意の手段により設けることもでき
る。In order to manufacture the fluid transfer heat insulation tube of the present invention, an intermediate portion which is fixed to the outer surface of the resin tube 1 without adhering to the resin tube 1 and adheres to the foamed resin / rubber insulation layer 2 by vulcanization. The layer 3 is coated, and the foamed resin / rubber insulating layer 2 is extruded thereon, and then vulcanized to bond the intermediate layer 3 to the foamed resin / rubber insulating layer 2. As the intermediate layer 3, an elastomer resin which is different from the resin tube 1 and has no adhesiveness to the resin tube 1, and is the same as the foamed resin / rubber insulating layer 2 and has an adhesive property to the foamed resin / rubber insulating layer 2. Is used, an outer surface of the resin tube 1 is coated with an elastomer resin, and the foamed resin / rubber insulating layer 2 is extrusion-coated thereon, and then vulcanized to cure the intermediate layer 3 and the foamed resin / rubber insulating layer. Adhere to layer 2. For example, in a preferred example of the present invention, when a fluororesin is used for the resin tube 1, a foamed silicone resin is used for the foamed resin / rubber heat insulating layer 2, and a silicone rubber is used for the intermediate layer 3, the outer surface of the fluororesin tube 1 After coating with a silicone solid rubber and extruding a foamed silicone resin thereon, at a temperature of 150 ° C. to 250 ° C., 1
The silicone solid rubber and the foamed silicone resin are adhered by heating and vulcanizing for 0 to 120 minutes. In the case where a wound layer of a metal foil such as an aluminum foil tape is used as the intermediate layer 3, the intermediate layer 3 in which the metal foil is wound and fixed on the outer surface of the resin tube 1 is formed. Foam resin
After extrusion coating the rubber heat insulating layer 2, the intermediate layer 3 is bonded to the foamed resin / rubber heat insulating layer 2 by vulcanization. For example, as a preferred example of the present invention, a resin tube 1 is made of a fluororesin, a foamed resin / rubber insulating layer 2 is made of a foamed silicone resin,
When an aluminum foil tape is used for the intermediate layer 3, the aluminum foil tape is wound tightly around the outer surface of the fluororesin tube 1 so as not to slip, and after extruding a foamed silicone resin thereon, 150 ° C to 250 ° C
At 10 ° C. for 10 minutes to 10 hours to bond the aluminum foil tape and the foamed silicone resin by hydrogen bonding. In addition, in order to further increase the adhesive force between the foamed silicone resin and the aluminum foil tape, and to prevent the displacement of the winding of the aluminum foil tape, if necessary,
Between the aluminum foil tape and the foamed silicone resin,
An adhesive such as various resin / rubber adhesives such as an epoxy resin adhesive and a silicone rubber adhesive may be applied.
If necessary, a metal foil layer or a braided shield layer may be provided on the inner surface or the outer surface of the intermediate layer 3.
Further, on the outer surface of the foamed resin / rubber heat insulating layer 2, if necessary, a protective coating layer made of the above-mentioned various materials can be provided by any means such as coating and extrusion coating.
【０００８】本発明によれば、発泡樹脂・ゴム保温層２
と中間層３とが接着されており、しかも該中間層３は該
樹脂チューブ１に固定されているため、押出被覆された
発泡樹脂・ゴム保温層２が、加硫時に長手方向に伸びよ
うとしても、その伸びが阻止され、樹脂チューブ１の表
面上でのスティック・スリップに起因するくびれが発生
するというようなことがなく、図２に示すように、発泡
樹脂・ゴム保温層２の表面は平坦となり、断熱、保温性
能が悪化せず、外観の良好な流体移送保温チューブが得
られる。更に、発泡樹脂・ゴム保温層２は、中間層３を
介して樹脂チューブ１と接着していないため、継手など
でチューブを接続する際に、発泡樹脂・ゴム保温層２を
樹脂チューブ１から容易に剥ぎ取ることができ、いわゆ
る端末処理が容易となり、使用時の作業性が著しく向上
する。According to the present invention, the foamed resin / rubber heat insulating layer 2
And the intermediate layer 3 are bonded to each other, and since the intermediate layer 3 is fixed to the resin tube 1, the extrusion-coated foamed resin / rubber heat insulating layer 2 tends to extend in the longitudinal direction during vulcanization. In addition, the elongation is prevented, and there is no occurrence of constriction due to stick-slip on the surface of the resin tube 1. As shown in FIG. A fluid transfer heat retaining tube with good appearance can be obtained without being deteriorated in heat insulation and heat retaining performance. Further, since the foamed resin / rubber heat insulating layer 2 is not bonded to the resin tube 1 via the intermediate layer 3, the foamed resin / rubber heat insulating layer 2 can be easily separated from the resin tube 1 when connecting the tube with a joint or the like. The terminal treatment is facilitated, and workability during use is significantly improved.
【０００９】[0009]
【実施例】以下、実施例及び比較例により本発明を更に
詳細に説明するが、本発明はこれらによって何等限定さ
れるものではない。 実施例１ 内径２２．２２ｍｍ、肉厚１．５９ｍｍのフッ素樹脂
（ＰＦＡ）チューブの外面に、シリコーンゴム（東芝シ
リコーン（株）ＴＳＥ２５７１−５）を厚さ０．２ｍｍ
となるようにコーティングして固定し、その上に発泡シ
リコーン樹脂（東芝シリコーン（株）ＴＳＥ２５７１−
５）を１０ｍｍの厚さに押出被覆した後、２００℃の温
度で、４時間加熱加硫して、シリコーンゴムと発泡シリ
コーン樹脂とを接着させた。更に、発泡シリコーン樹脂
層の外面に、フッ素樹脂（ＰＦＡ）を押出被覆して、厚
さ０．１ｍｍの保護被覆層を設けた。得られた流体移送
保温チューブは、長さ１００ｍの長尺チューブであり、
その表面にくびれは発生せず、図２に示すように平坦
で、断熱、保温性能、外観が良好であった。また、発泡
シリコーン樹脂層をフッ素樹脂チューブから容易に剥ぎ
取ることができ、端末処理も容易であった。The present invention will be described in more detail with reference to the following Examples and Comparative Examples, but the present invention is not limited thereto. Example 1 A silicone rubber (TSE2571-5, Toshiba Silicone Co., Ltd.) having a thickness of 0.2 mm was coated on the outer surface of a fluororesin (PFA) tube having an inner diameter of 22.22 mm and a thickness of 1.59 mm.
And fixed so that the foamed silicone resin (Toshiba Silicone Co., Ltd. TSE2571-
5) was extrusion-coated to a thickness of 10 mm, and then heated and vulcanized at a temperature of 200 ° C. for 4 hours to bond the silicone rubber and the foamed silicone resin. Furthermore, the outer surface of the foamed silicone resin layer was extrusion-coated with a fluororesin (PFA) to provide a protective coating layer having a thickness of 0.1 mm. The obtained fluid transfer heat insulation tube is a long tube having a length of 100 m,
No constriction occurred on the surface, and the surface was flat as shown in FIG. 2, and the heat insulation, the heat retaining performance, and the appearance were good. Further, the foamed silicone resin layer could be easily peeled off from the fluororesin tube, and the terminal treatment was also easy.
【００１０】実施例２ 実施例１において、シリコーンゴムの代りに、厚さ０．
０５ｍｍ、幅３０ｍｍのアルミニウム箔テープを、互い
に１５ｍｍずつ重なり合うようにフッ素樹脂チューブ外
面に巻回固定し、その他は実施例１と同様にして流体移
送保温チューブを作成した。アルミニウム箔テープは、
水素結合により発泡シリコーン樹脂層と接着しており、
得られた流体移送保温チューブの表面にくびれは発生せ
ず、図２に示すように平坦で、断熱、保温性能、外観が
良好であった。また、発泡シリコーン樹脂層をフッ素樹
脂チューブから容易に剥ぎ取ることができ、端末処理も
容易であった。Example 2 In Example 1, a silicone rubber was used instead of silicone rubber.
An aluminum foil tape having a thickness of 05 mm and a width of 30 mm was wound and fixed on the outer surface of the fluororesin tube so as to overlap each other by 15 mm, and a fluid transfer heat retaining tube was prepared in the same manner as in Example 1 except for the above. Aluminum foil tape is
Adhered to the foamed silicone resin layer by hydrogen bonding,
No constriction occurred on the surface of the obtained fluid transfer heat retaining tube, and it was flat as shown in FIG. 2, and the heat insulation, heat retaining performance, and appearance were good. Further, the foamed silicone resin layer could be easily peeled off from the fluororesin tube, and the terminal treatment was also easy.
【００１１】比較例１ 実施例１において、シリコーンゴムからなる中間層を使
用せず、その他は実施例１と同様にして、流体移送保温
チューブを作成した。得られた流体移送保温チューブの
表面には、図３に示すようにくびれが発生し、断熱、保
温性能、外観が不良であった。 比較例２Comparative Example 1 A fluid transfer heat retaining tube was prepared in the same manner as in Example 1 except that the intermediate layer made of silicone rubber was not used. As shown in FIG. 3, constriction occurred on the surface of the obtained fluid transfer heat retaining tube, and heat insulation, heat retaining performance, and appearance were poor. Comparative Example 2
【００１２】実施例１において、シリコーンゴムからな
る中間層を使用せず、フッ素樹脂チューブと発泡シリコ
ーン樹脂層とを直接押出しし、その他は実施例１と同様
にして、流体移送保温チューブを作成した。得られた流
体移送保温チューブの表面にくびれが発生し、図３に示
すように断熱・保温性能不良、外観不良であった。In Example 1, a fluid transfer heat insulating tube was prepared in the same manner as in Example 1 except that the fluororesin tube and the foamed silicone resin layer were directly extruded without using an intermediate layer made of silicone rubber. . Constriction occurred on the surface of the obtained fluid transfer heat retaining tube, resulting in poor heat insulation / heat retaining performance and poor appearance as shown in FIG.
【００１３】実施例３ 実施例１において、フッ素樹脂チューブへ銅からなる金
属箔テープをテープ巻きし、この金属箔テープをシリコ
ーンゴム中間層とシリコーンゴム 系接着剤（東
芝シリコーン（株）ＴＳＥ３２２ＲＴＶ）で接着し、中
間層内面に金属層を設けた。得られた流体移送保温チュ
ーブは、実施例１と同様に、外観が良好で、端末処理も
容易であり、断熱、保温性能は一段と優れたものであっ
た。Example 3 In Example 1, a metal foil tape made of copper was wound around a fluororesin tube, and the metal foil tape was wrapped with a silicone rubber intermediate layer and a silicone rubber-based adhesive (TSE322RTV, Toshiba Silicone Co., Ltd.). The metal layer was provided on the inner surface of the intermediate layer. As in Example 1, the obtained fluid transfer heat retaining tube had good appearance, easy terminal treatment, and further excellent heat insulation and heat retaining performance.
【００１４】実施例４ 実施例１において、フッ素樹脂チューブへニッケルメッ
キ軟銅線 からなる金属編組シールドを装着
し、この金属編組シールドをシリコーンゴム中間層とシ
リコーンゴム系接着剤（東芝シリコーン（株）ＴＳＥ３
２２ＲＴＶ）で接着し、中間層内面に編組シールド層を
設けた。得られた流体移送保温チューブは、実施例１と
同様に、断熱、保温性能、外観が良好で、端末処理も容
易（但し、編組シールドを除去するのに若干手間がかか
る）であり、かつ、耐圧性に優れたものであった。Example 4 In Example 1, a metal braided shield made of nickel-plated soft copper wire was attached to a fluororesin tube, and this metal braided shield was bonded to a silicone rubber intermediate layer and a silicone rubber-based adhesive (TSE3, Toshiba Silicone Co., Ltd.).
22 RTV) and a braided shield layer was provided on the inner surface of the intermediate layer. The obtained fluid transfer heat retaining tube has good heat insulation, heat retaining performance, good appearance, and easy terminal treatment (however, it takes some time to remove the braided shield), as in Example 1. It was excellent in pressure resistance.
【００１５】[0015]
【発明の効果】本発明によれば、押出被覆などを用い
て、長尺の流体移送保温チューブを得ることができ、し
かも、発泡樹脂・ゴム保温層と中間層とが接着されてお
り、しかも該中間層は該樹脂チューブに固定されている
ため、押出被覆された発泡樹脂・ゴム保温層が、加硫時
に長手方向に伸びようとしても、その伸びが阻止され、
樹脂チューブの表面上でのスティック・スリップに起因
するくびれが発生せず、図２に示すように、発泡樹脂・
ゴム保温層の表面は平坦となり、断熱、保温性能が悪化
せず、外観の良好な流体移送保温チューブが得られる。
更に、発泡樹脂・ゴム保温層は、中間層を介して樹脂チ
ューブと接着していないため、継手などでチューブを接
続する際に、発泡樹脂・ゴム保温層を樹脂チューブから
容易に剥ぎ取ることができ、いわゆる端末処理が容易と
なり、使用時の作業性が著しく向上する。According to the present invention, a long fluid transfer heat insulating tube can be obtained by using extrusion coating and the like, and the foamed resin / rubber heat insulating layer and the intermediate layer are adhered. Since the intermediate layer is fixed to the resin tube, the foamed resin / rubber heat insulating layer coated by extrusion is prevented from extending in the longitudinal direction during vulcanization,
There is no constriction caused by stick-slip on the surface of the resin tube, and as shown in FIG.
The surface of the rubber heat insulating layer becomes flat, and a heat transfer and heat insulating tube with good appearance can be obtained without deterioration in heat insulation and heat insulating performance.
Furthermore, since the foamed resin / rubber insulation layer is not bonded to the resin tube via the intermediate layer, the foamed resin / rubber insulation layer can be easily peeled off from the resin tube when connecting the tube with a joint or the like. As a result, so-called terminal processing is facilitated, and workability during use is significantly improved.
【図1】本発明の流体移送保温チューブの一例を示す横
断面図である。FIG. 1 is a cross-sectional view showing one example of a fluid transfer heat retaining tube of the present invention.
【図2】本発明の流体移送保温チューブの一例を示す縦
断面図である。FIG. 2 is a longitudinal sectional view showing an example of a fluid transfer heat retaining tube of the present invention.
【図3】従来の流体移送保温チューブの一例を示す縦断
面図である。FIG. 3 is a longitudinal sectional view showing an example of a conventional fluid transfer heat retaining tube.
１ 樹脂チューブ ２ 発泡樹脂・ゴム保温層 ３ 中間層 1 Resin tube 2 Foam resin / rubber insulation layer 3 Intermediate layer
Claims (15)
温層で被覆した流体移送保温チューブにおいて、該樹脂
チューブと該発泡樹脂・ゴム保温層との間に、該樹脂チ
ューブには接着することなく固定されており、かつ該発
泡樹脂・ゴム保温層には接着した中間層を設けたことを
特徴とする流体移送保温チューブ。1. A fluid transfer heat insulation tube in which the outer surface of a resin tube is covered with a foamed resin / rubber heat insulation layer, between the resin tube and the foamed resin / rubber heat insulation layer without being bonded to the resin tube. A fluid transfer heat insulating tube fixed and provided with an intermediate layer bonded to the foamed resin / rubber heat insulating layer.
する樹脂・ゴムと同種のエラストマー樹脂・ゴムからな
ることを特徴とする請求項１記載の流体移送保温チュー
ブ。2. The fluid transfer heat insulation tube according to claim 1, wherein the intermediate layer is made of an elastomer resin or rubber of the same kind as the resin or rubber constituting the foamed resin or rubber heat insulation layer.
泡樹脂・ゴム保温層が発泡シリコーン樹脂・ゴム層、中
間層がシリコーンゴム層であることを特徴とする請求項
２記載の流体移送保温チューブ。3. The fluid transfer heat insulation tube according to claim 2, wherein the resin tube is a fluororesin tube, the foamed resin / rubber heat insulation layer is a foamed silicone resin / rubber layer, and the intermediate layer is a silicone rubber layer.
特徴とする請求項１記載の流体移送保温チューブ。4. The heat transfer tube according to claim 1, wherein the intermediate layer is a wound layer of a metal foil.
泡樹脂・ゴム保温層が発泡シリコーン樹脂・ゴム層であ
ることを特徴とする請求項４記載の流体移送保温チュー
ブ。5. The fluid transfer heat insulation tube according to claim 4, wherein the resin tube is a fluororesin tube, and the foamed resin / rubber insulation layer is a foamed silicone resin / rubber layer.
求項４又は５記載の流体移送保温チューブ。6. The heat transfer tube according to claim 4, wherein the metal foil is an aluminum foil tape.
たことを特徴とする請求項１記載の流体移送保温チュー
ブ。7. The fluid transfer heat insulation tube according to claim 1, wherein a metal foil layer is provided on an inner surface or an outer surface of the intermediate layer.
を設けたことを特徴とする請求項１記載の流体移送保温
チューブ。8. The fluid transfer heat insulation tube according to claim 1, wherein a braided shield layer is provided on an inner surface or an outer surface of the intermediate layer.
層を設けたことを特徴とする請求項１記載の流体移送保
温チューブ。9. The fluid transfer heat insulation tube according to claim 1, wherein a protective coating layer is provided on an outer surface of the foamed resin / rubber heat insulation layer.
ブとは接着することなく固定され、加硫によって発泡樹
脂・ゴム保温層と接着する中間層を被覆し、その上に該
発泡樹脂・ゴム保温層を押出被覆した後、加硫して該中
間層と該発泡樹脂・ゴム保温層とを接着させることを特
徴とする流体移送保温チューブの製造方法。10. An outer surface of the resin tube, which is fixed without being bonded to the resin tube, and is coated with an intermediate layer which is bonded to a foamed resin / rubber heat insulating layer by vulcanization. A method for producing a fluid transfer heat insulating tube, comprising extruding a layer, vulcanizing the layer, and bonding the intermediate layer and the foamed resin / rubber heat insulating layer.
成する樹脂・ゴムと同種のエラストマー樹脂・ゴムから
なることを特徴とする請求項１０記載の流体移送保温チ
ューブの製造方法。11. The method according to claim 10, wherein the intermediate layer is made of an elastomer resin / rubber of the same kind as the resin / rubber forming the foamed resin / rubber heat-insulating layer.
発泡樹脂・ゴム保温層が発泡シリコーン樹脂・ゴム層、
中間層がシリコーンゴム層であることを特徴とする請求
項１１記載の流体移送保温チューブの製造方法。12. The resin tube is a fluororesin tube,
The foamed resin / rubber insulation layer is a foamed silicone resin / rubber layer,
The method according to claim 11, wherein the intermediate layer is a silicone rubber layer.
て固定した中間層を形成し、その上に発泡樹脂・ゴム保
温層を押出被覆した後、加硫して該中間層と該発泡樹脂
・ゴム保温層とを接着させることを特徴とする流体移送
保温チューブの製造方法。13. An intermediate layer fixed by winding a metal foil around an outer surface of a resin tube, and a foamed resin / rubber insulating layer is extrusion-coated thereon, and then vulcanized to cure the intermediate layer and the foamed resin. -A method for producing a fluid transfer heat insulating tube, wherein the tube is bonded to a rubber heat insulating layer.
発泡樹脂・ゴム保温層が発泡シリコーン樹脂・ゴム層で
あることを特徴とする請求項１３記載の流体移送保温チ
ューブの製造方法。14. The resin tube is a fluororesin tube,
14. The method for manufacturing a fluid transfer heat insulating tube according to claim 13, wherein the foamed resin / rubber heat insulating layer is a foamed silicone resin / rubber layer.
ことを特徴とする請求項１３又は１４記載の流体移送保
温チューブの製造方法。15. The method according to claim 13, wherein the metal foil is an aluminum foil tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28356399A JP4437346B2 (en) | 1999-10-04 | 1999-10-04 | Fluid transfer insulation tube and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28356399A JP4437346B2 (en) | 1999-10-04 | 1999-10-04 | Fluid transfer insulation tube and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001108188A true JP2001108188A (en) | 2001-04-20 |
| JP4437346B2 JP4437346B2 (en) | 2010-03-24 |
Family
ID=17667161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28356399A Expired - Fee Related JP4437346B2 (en) | 1999-10-04 | 1999-10-04 | Fluid transfer insulation tube and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4437346B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004099660A1 (en) * | 2003-05-09 | 2004-11-18 | Marugo Rubber Industries, Ltd. | Rubber hose and method for manufacture thereof |
| JP2008095286A (en) * | 2006-10-06 | 2008-04-24 | Aoyagi:Kk | Linear heating element, and snow-melting structure of existing road surface, using it |
| JP2009287717A (en) * | 2008-05-30 | 2009-12-10 | Toyox Co Ltd | Rubber foamed hose |
| JP2015057557A (en) * | 2013-09-16 | 2015-03-26 | タイガースポリマー株式会社 | Method of manufacturing heat insulation flexible hose for steam pipe and tubular heat insulation member |
-
1999
- 1999-10-04 JP JP28356399A patent/JP4437346B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004099660A1 (en) * | 2003-05-09 | 2004-11-18 | Marugo Rubber Industries, Ltd. | Rubber hose and method for manufacture thereof |
| CN100406796C (en) * | 2003-05-09 | 2008-07-30 | 丸五橡胶工业株式会社 | Rubber hose and method for manufacture thereof |
| JP2008095286A (en) * | 2006-10-06 | 2008-04-24 | Aoyagi:Kk | Linear heating element, and snow-melting structure of existing road surface, using it |
| JP2009287717A (en) * | 2008-05-30 | 2009-12-10 | Toyox Co Ltd | Rubber foamed hose |
| JP2015057557A (en) * | 2013-09-16 | 2015-03-26 | タイガースポリマー株式会社 | Method of manufacturing heat insulation flexible hose for steam pipe and tubular heat insulation member |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4437346B2 (en) | 2010-03-24 |
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