JPH11153264A - Manufacture of composite hose and twin hose - Google Patents
Manufacture of composite hose and twin hoseInfo
- Publication number
- JPH11153264A JPH11153264A JP33808297A JP33808297A JPH11153264A JP H11153264 A JPH11153264 A JP H11153264A JP 33808297 A JP33808297 A JP 33808297A JP 33808297 A JP33808297 A JP 33808297A JP H11153264 A JPH11153264 A JP H11153264A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- rubber
- hose
- reinforcing
- rubber tube
- 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
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、追い焚き風呂循環
用、床暖房用、インジェクション温調用等の１２０℃以
下の温水輸送に用いるホ−スに関するもので、主として
ホ−スを往き用と戻り用の２本をツイン構造にて使用す
るホ−スに係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose used for transporting hot water at 120.degree. C. or lower, such as for recirculating a heated bath, for floor heating, or for controlling injection temperature. This is a hose that uses two hoses in a twin structure.
【０００２】[0002]
【従来の技術】従来よりこの種のホ−スとしては、ＥＰ
ＤＭからなる内層ゴム管と、その外周面にビニロンや芳
香族ポリアミド繊維からなる複数本の補強糸を巻回して
なる補強層と、その外周面にＥＰＤＭからなる外層ゴム
を形成してなるホ−スが知られている。2. Description of the Related Art Conventionally, as a hose of this type, EP
An inner rubber tube made of DM, a reinforcing layer formed by winding a plurality of reinforcing yarns made of vinylon or aromatic polyamide fiber on the outer peripheral surface thereof, and a hose formed by forming an outer rubber layer made of EPDM on the outer peripheral surface thereof. Is known.
【０００３】これらホ−スをツイン構造とするために
は、補強層まで形成したホ−スを２本用意し、その外層
ゴムを押出す時にメガネ状に押出しツイン化をなし、そ
の後加硫することで商品となす方法や、単体の加硫済み
ゴムホ−スを紐、結束治具にて２本結束する方法が知ら
れている。In order to form these hoses into a twin structure, two hoses formed up to a reinforcing layer are prepared, and when the outer layer rubber is extruded, they are extruded into a pair of glasses and twinned, and then vulcanized. Thus, a method of forming a product and a method of binding two vulcanized rubber hoses together with a string and a binding jig are known.
【０００４】前者の外層ゴムを押出す時にツイン化をな
す方法では、補強層を形成済みの２本のホ−スの寸法、
曲がりくせ、補強糸の編上角度等のバラツキがあると加
工速度も上げられず、加工がしにくくコスト高となって
しまう。一方、加硫済みの単体ホ−スを２本結束する方
法では結束ピッチを小さくしないと、未結束部でホ−ス
が離れてしまい取扱いに不便であることと、結束ピッチ
を小さくすると結束の加工費がかかるという問題があっ
た。In the former method of forming the outer layer rubber into a twin when extruding the outer layer rubber, the dimensions of the two hoses on which the reinforcing layer has been formed,
If there is a variation in the knitting angle or the like of the reinforcing yarn, the processing speed cannot be increased, and the processing is difficult and the cost increases. On the other hand, in the method of binding two vulcanized single-piece hoses, if the binding pitch is not reduced, the hose is separated at an unbound portion and the handling is inconvenient. There was a problem that processing cost was required.
【０００５】他方、熱融着によるツイン構造のホ−スと
するには、内層及び外層にＰＶＣを用い、補強層には硬
鋼線をラセン状に巻回するか、補強糸を巻回したホ−ス
が知られている。このＰＶＣホ−スは、内層にもＰＶＣ
が使用されており、温水が内層ＰＶＣ管を循環すると温
水により内層ＰＶＣに配合した可塑剤等が抽出され、ホ
−スの硬化が生じホ−スの折れやパイプの接合部で漏れ
が発生しやすい欠点があった。On the other hand, in order to form a twin-structure hose by heat fusion, PVC is used for the inner layer and the outer layer, and a hard steel wire is wound spirally or a reinforcing thread is wound for the reinforcing layer. Hoses are known. This PVC hose has PVC as the inner layer.
When hot water circulates through the inner PVC pipe, the hot water extracts the plasticizer and the like blended in the inner PVC, hardening of the hose causes breakage of the hose and leakage at the joint of the pipes. There was an easy drawback.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、ホ−スの最
外層に熱可塑性樹脂を用いた複合ホ−スとすることで従
来の技術の欠点を改良したものである。SUMMARY OF THE INVENTION The present invention has improved the drawbacks of the prior art by forming a composite hose using a thermoplastic resin for the outermost layer of the hose.
【０００７】[0007]
【課題を解決するための手段】本発明は以上の課題を解
決するためになされたものであって、その発明の第１は
耐温水用の複合ホ−スに係るもので、内層ゴム管と、こ
の内層ゴム管の外周面に補強糸を巻回した補強層と、こ
の補強層の外周面に配置した中間ゴム層と、当該中間ゴ
ム層の外周面に熱可塑性樹脂層を備えたことを特徴とす
る。DISCLOSURE OF THE INVENTION The present invention has been made to solve the above problems, and the first aspect of the present invention relates to a composite hose for hot water resistance, which is provided with an inner layer rubber tube. A reinforcing layer in which a reinforcing thread is wound on the outer peripheral surface of the inner rubber tube, an intermediate rubber layer disposed on the outer peripheral surface of the reinforcing layer, and a thermoplastic resin layer on the outer peripheral surface of the intermediate rubber layer. Features.
【０００８】そして、発明の第２はツインホ−スの製造
方法に係るもので、ゴム又は樹脂マンドルの上にゴムを
規定厚さ押し出して内層ゴム管を構成する第１工程、内
層ゴム管の外周面に補強糸を巻回し補強層を構成する第
２工程、補強層の外周面にゴムを規定厚さ押し出して中
間ゴム層を構成する第３工程、加熱して上記各層のゴム
を加硫し次いでマンドルを抜き出しゴムホ−スを得る第
４工程、ゴムホ−スの中間ゴム層表面に接着剤を塗布す
る第５工程、この塗布された接着剤上に熱可塑性樹脂を
規定厚さ押し出す第６工程、前記熱可塑性樹脂を加熱軟
化させてゴムホ−ス同士を熱融着させる第７工程、とか
らなる方法である。A second aspect of the present invention relates to a method of manufacturing a twin hose, in which a first step of extruding rubber onto a rubber or resin mandrel to a predetermined thickness to form an inner rubber tube, the outer periphery of the inner rubber tube, A second step of winding a reinforcing yarn around the surface to form a reinforcing layer, a third step of extruding rubber to the outer peripheral surface of the reinforcing layer by a specified thickness to form an intermediate rubber layer, and heating to vulcanize the rubber of each of the above layers Next, a fourth step of extracting the mandrel to obtain a rubber hose, a fifth step of applying an adhesive to the surface of the intermediate rubber layer of the rubber hose, and a sixth step of extruding a thermoplastic resin to a predetermined thickness on the applied adhesive. And a seventh step of heating and softening the thermoplastic resin to thermally fuse the rubber hoses together.
【０００９】[0009]
【発明の実施の形態】本発明の第１の複合ホ−スは、内
層ゴム管と、この内層ゴム管の外周面に補強糸を巻回し
た補強層と、その補強層の外周面に配置した中間ゴム層
と、更にこの中間ゴム層の外周面に熱可塑性樹脂をそな
えてなる耐温水用の複合ホ−スで、内層ゴム管は温水の
循環に耐えられるようＥＰＤＭを用い、塩素水や入浴剤
に耐え、かつ抽出物が少なく水分透過も少ない配合とす
るものが好ましい。特にゴム表面にカ−ボンが抽出され
るという黒色汚染を防止するため、カ−ボンの配合量を
５部以下に押えることが重要であり、ゴムの硬度は６０
〜８０°が望ましい。DESCRIPTION OF THE PREFERRED EMBODIMENTS A first composite hose according to the present invention comprises an inner rubber tube, a reinforcing layer in which a reinforcing thread is wound around the outer peripheral surface of the inner rubber tube, and an outer peripheral surface of the reinforcing layer. The intermediate rubber layer is made of a composite hose for warm water with a thermoplastic resin provided on the outer peripheral surface of the intermediate rubber layer. The inner rubber tube is made of EPDM so as to withstand the circulation of warm water. It is preferable to use a composition that is resistant to bathing agents, has a low extractability, and has a low moisture permeability. In particular, in order to prevent black contamination, in which carbon is extracted on the rubber surface, it is important to reduce the amount of carbon to 5 parts or less, and the hardness of the rubber is 60 parts.
~ 80 ° is desirable.
【００１０】補強層に用いられる補強糸は、ホ−スの使
用温度で１００℃未満の温水時はビニロンを、１００℃
を越えるときは芳香族ポリアミド繊維、軟鋼線を用いる
ことが好ましい。特に、ビニロンは安価で全使用温度に
使用したいが高温水では加水分解の恐れがあるため使用
温度を１００℃未満とするものである。The reinforcing yarn used for the reinforcing layer is made of vinylon when the water is used at a temperature lower than 100 ° C. at a hose operating temperature and 100 ° C.
When the ratio exceeds, it is preferable to use an aromatic polyamide fiber or a mild steel wire. In particular, vinylon is inexpensive and should be used at all operating temperatures, but the operating temperature should be lower than 100 ° C. because of the risk of hydrolysis in high-temperature water.
【００１１】補強層上に形成される中間ゴム層は、主と
して外層の樹脂層との接着を確保する目的のために用い
るもので、中間ゴム層の外表面に直接又はバフ加工後に
接着剤を塗布し、その外周面に樹脂層を押し出し被覆す
るものである。The intermediate rubber layer formed on the reinforcing layer is mainly used for the purpose of securing adhesion to the outer resin layer, and an adhesive is applied directly or after buffing to the outer surface of the intermediate rubber layer. Then, a resin layer is extruded and coated on the outer peripheral surface.
【００１２】外層の樹脂層は、熱融着加工を容易とする
ため熱可塑性樹脂とし１００℃未満の温水時はオレフィ
ン系ＴＰＥ、ＰＶＣ、ポリウレタン樹脂、スチレン系樹
脂等が主として使用され、１００℃を越えるときはオレ
フィン系ＴＰＥ、シリコ−ン樹脂、ポリアミド樹脂等が
使用可能である。The outer resin layer is made of a thermoplastic resin in order to facilitate the heat-sealing process, and when hot water of less than 100 ° C., olefin-based TPE, PVC, polyurethane resin, styrene-based resin and the like are mainly used. If it exceeds, olefinic TPE, silicone resin, polyamide resin and the like can be used.
【００１３】これら樹脂の硬度は複合ホ−スとしての柔
軟性を確保するため５０〜７０°が望ましい。又、外層
を樹脂層とすることでホ−スのカラ−化が容易となり、
かつ往きと戻りのホ−スの色分けも容易にできることと
なる。[0013] The hardness of these resins is desirably 50 to 70 ° in order to ensure flexibility as a composite hose. In addition, by forming the outer layer as a resin layer, it becomes easy to color the hose,
In addition, the forward and return hoses can be easily color-coded.
【００１４】本発明の第２のホ−スの製造方法として
は、ゴム又は樹脂マンドルの上に内層ゴム管を規定厚さ
押し出す。その外周面に補強糸を巻回し補強層となす
が、巻回しする構造はスパイラル状でもプレ−ド状でも
良い。この補強層の外周面に中間ゴム層を規定厚さ押し
出す。その後、規定の温度で一定時間加硫し加硫後マン
ドルを抜き出してゴムホ−スを形成させる。これらを連
続加工とすることで、加工費の低減、品質の安定性がは
かれる。次に加硫済みゴムホ−スの中間ゴム層表面をバ
フ研磨し、規定の接着剤を塗布後、熱可塑性樹脂を規定
厚さ押出し複合ホ−スを形成させる。尚、バフ研磨は必
須ではないが、接着力を確保するためにはこの工程を行
うことが望ましい。この複合ホ−スを規定長さに切断
し、ホ−ス単体２本を熱融着させツイン構造に加工する
ものである。このツイン構造とするための熱融着の方法
は、外層に用いた樹脂の融点に合わせて設定した熱風を
ノズルの先より吐出し、外層樹脂を軟化させホ−ス同士
を圧着することでツイン化が可能となる。In the second method of manufacturing the hose of the present invention, an inner rubber tube is extruded onto a rubber or resin mandrel by a specified thickness. A reinforcing yarn is wound around the outer peripheral surface to form a reinforcing layer. The winding structure may be a spiral shape or a blade shape. An intermediate rubber layer is extruded on the outer peripheral surface of the reinforcing layer by a specified thickness. Thereafter, it is vulcanized at a prescribed temperature for a predetermined time, and after vulcanization, a mandrel is extracted to form a rubber hose. By making these continuous processes, the processing cost can be reduced and the quality can be stabilized. Next, the surface of the intermediate rubber layer of the vulcanized rubber hose is buffed, a specified adhesive is applied, and a thermoplastic resin is extruded to a specified thickness to form a composite hose. Note that buff polishing is not essential, but it is desirable to perform this step in order to secure adhesive strength. This composite hose is cut into a specified length, and two pieces of the hose alone are heat-sealed to form a twin structure. The method of heat fusion for forming this twin structure is as follows: hot air set according to the melting point of the resin used for the outer layer is discharged from the tip of the nozzle, the outer layer resin is softened, and the hoses are pressed together to form a twin. Is possible.
【００１５】尚、本発明の複合ホ−スの大きさは特に限
定はされないが、例えば、内層ゴム管１の直径は５〜５
０ｍｍ、厚さ１〜４ｍｍ、中間ゴム層３は主としてＮＢ
Ｒが採用され、その厚さは０．５〜２ｍｍ、外面樹脂層
の厚さは０．５〜２ｍｍ程度が採用される。The size of the composite hose of the present invention is not particularly limited. For example, the diameter of the inner rubber tube 1 is 5 to 5 mm.
0 mm, thickness 1-4 mm, intermediate rubber layer 3 is mainly NB
R is adopted, the thickness is 0.5-2 mm, and the thickness of the outer resin layer is about 0.5-2 mm.
【００１６】[0016]
【実施例】以下、実施例をもって本発明を更に詳細に説
明する。図１は本発明の第１における複合ホ−スの側面
図であり、図２はこれをツインホ−スとした際の断面図
である。図中、１はＥＰＤＭ製の内層ゴム管、２は芳香
族ポリアミド繊維よりなる補強層であり、巻回角度は好
ましくは５４度４４分（静止角度）としたものである。
３はＮＢＲを主成分とする中間ゴム層であり、４はＰＶ
Ｃ製の外層である。この複合ホ−スは当然ホ−ス単体で
の使用も可能である。この例における各層は、内層ゴム
管１の直径は１４ｍｍ、厚さ１．５ｍｍ、中間ゴム層３
の厚さは１ｍｍ、外面樹脂層の厚さは０．９ｍｍであっ
た。The present invention will be described in more detail with reference to the following examples. FIG. 1 is a side view of a composite hose according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view when the composite hose is a twin hose. In the figure, 1 is an inner layer rubber tube made of EPDM, 2 is a reinforcing layer made of an aromatic polyamide fiber, and the winding angle is preferably 54 degrees 44 minutes (stationary angle).
3 is an intermediate rubber layer mainly composed of NBR, 4 is PV
It is an outer layer made of C. This composite hose can of course be used alone. Each layer in this example has a diameter of the inner rubber tube 1 of 14 mm, a thickness of 1.5 mm, and an intermediate rubber layer 3.
Was 1 mm, and the thickness of the outer resin layer was 0.9 mm.
【００１７】次に、得られた上記複合ホ−スを用い、第
２発明の第７工程において熱風ノズル（熱風温度２００
〜５００℃）をもって加熱し、第４層のＰＶＣ層を軟化
させ、これを押えロ−ラ−等にて加圧接触させることに
よって図２に示すツインホ−スとしたものである。熱風
温度は外面樹脂層の種類及びホ−スの加工速度によって
適宜選択されるものである。尚、加工速度は通常は２〜
１５ｍ／分の範囲にて行われる。Next, in the seventh step of the second invention, a hot air nozzle (hot air temperature 200
(500 ° C.) to soften the fourth PVC layer, and press-contact it with a pressing roller or the like to form a twin hose as shown in FIG. The hot air temperature is appropriately selected depending on the type of the outer resin layer and the processing speed of the hose. The processing speed is usually 2 to
It is performed in a range of 15 m / min.
【００１８】[0018]
【発明の効果】本発明の第２発明について言えば、複合
ホ−スの外層を加熱して接合するだけで簡単にツインホ
−スを得ることができ、連続加工とすることで、加工費
の低減・品質の安定性がはかれる。According to the second invention of the present invention, it is possible to easily obtain a twin hose simply by heating and joining the outer layers of the composite hose. Reduction and quality stability are assured.
【図１】図１は第１発明における複合ホ−スの側面図で
ある。FIG. 1 is a side view of a composite hose according to the first invention.
【図２】図２は第２発明におけるツインホ−スの断面図
である。FIG. 2 is a sectional view of a twin hose according to the second invention.
１‥‥内層ゴム管、 ２‥‥補強層、 ３‥‥中間ゴム層、 ４‥‥樹脂外層。 1) Inner layer rubber tube, 2) Reinforcement layer, 3) Intermediate rubber layer, 4) Resin outer layer.
Claims (8)
に補強糸を巻回した補強層と、この補強層の外周面に配
置した中間ゴム層と、当該中間ゴム層の外周面に熱可塑
性樹脂層を備えたことを特徴とする耐温水用の複合ホ−
ス。An inner rubber tube, a reinforcing layer having a reinforcing thread wound around the outer peripheral surface of the inner rubber tube, an intermediate rubber layer disposed on the outer peripheral surface of the reinforcing layer, and an outer peripheral surface of the intermediate rubber layer. A composite hose for hot water resistant, comprising a thermoplastic resin layer.
Su.
ブラックの配合量が５部以下である請求項第１項記載の
耐温水用の複合ホ−ス。2. The composite hose for hot water according to claim 1, wherein the inner layer rubber tube is made of EPDM, and the compounding amount of carbon black is 5 parts or less.
載の耐温水用の複合ホ−ス。3. The composite hose for hot water according to claim 1, wherein the reinforcing yarn is vinylon.
求項第１項記載の耐温水用の複合ホ−ス。4. The composite hose for hot water according to claim 1, wherein the reinforcing yarn is an aromatic polyamide fiber.
さ押し出して内層ゴム管を構成する第１工程、内層ゴム
管の外周面に補強糸を巻回し補強層を構成する第２工
程、補強層の外周面にゴムを規定厚さ押し出して中間ゴ
ム層を構成する第３工程、加熱して上記各層のゴムを加
硫し次いでマンドルを抜き出しゴムホ−スを得る第４工
程、ゴムホ−スの中間ゴム層表面に接着剤を塗布する第
５工程、この塗布された接着剤上に熱可塑性樹脂を規定
厚さ押し出す第６工程、前記熱可塑性樹脂を加熱軟化さ
せてゴムホ−ス同士を熱融着させる第７工程、とからな
るツインホ−スの製造方法。5. A first step of forming an inner layer rubber tube by extruding rubber onto a rubber or resin mandrel by a specified thickness, a second step of winding a reinforcing thread around an outer peripheral surface of the inner layer rubber tube to form a reinforcing layer, A third step of extruding rubber to the outer peripheral surface of the reinforcing layer by a specified thickness to form an intermediate rubber layer; a fourth step of heating to vulcanize the rubber of each layer and then extracting a mandrel to obtain a rubber hose; A fifth step of applying an adhesive to the surface of the intermediate rubber layer, a sixth step of extruding a thermoplastic resin to a predetermined thickness on the applied adhesive, and heating and softening the thermoplastic resin to heat the rubber hoses together. And a seventh step of fusing.
ブラックの配合量が５部以下である請求項第５項記載の
ツインホ−スの製造方法。6. The method according to claim 5, wherein the inner layer rubber tube is made of EPDM, and the compounding amount of carbon black is 5 parts or less.
載のツインホ−スの製造方法。7. The method according to claim 5, wherein the reinforcing yarn is vinylon.
求項第５項記載のツインホ−スの製造方法。8. The method according to claim 5, wherein the reinforcing yarn is an aromatic polyamide fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33808297A JP3904699B2 (en) | 1997-11-22 | 1997-11-22 | Twin hose and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33808297A JP3904699B2 (en) | 1997-11-22 | 1997-11-22 | Twin hose and manufacturing method thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006156627A Division JP2006308104A (en) | 2006-06-05 | 2006-06-05 | Composite hose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11153264A true JPH11153264A (en) | 1999-06-08 |
| JP3904699B2 JP3904699B2 (en) | 2007-04-11 |
Family
ID=18314745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33808297A Expired - Lifetime JP3904699B2 (en) | 1997-11-22 | 1997-11-22 | Twin hose and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3904699B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007196611A (en) * | 2006-01-30 | 2007-08-09 | Meiji Flow Systems Co Ltd | Hose for fluid |
| JP2009228753A (en) * | 2008-03-21 | 2009-10-08 | Bridgestone Corp | Flexible hose |
| JP2011132982A (en) * | 2009-12-22 | 2011-07-07 | Bridgestone Corp | Compound hose |
-
1997
- 1997-11-22 JP JP33808297A patent/JP3904699B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007196611A (en) * | 2006-01-30 | 2007-08-09 | Meiji Flow Systems Co Ltd | Hose for fluid |
| JP4618584B2 (en) * | 2006-01-30 | 2011-01-26 | 株式会社 メイジフローシステム | Fluid hose |
| JP2009228753A (en) * | 2008-03-21 | 2009-10-08 | Bridgestone Corp | Flexible hose |
| JP2011132982A (en) * | 2009-12-22 | 2011-07-07 | Bridgestone Corp | Compound hose |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3904699B2 (en) | 2007-04-11 |
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