JPH06286083A - Composite tube - Google Patents
Composite tubeInfo
- Publication number
- JPH06286083A JPH06286083A JP5080518A JP8051893A JPH06286083A JP H06286083 A JPH06286083 A JP H06286083A JP 5080518 A JP5080518 A JP 5080518A JP 8051893 A JP8051893 A JP 8051893A JP H06286083 A JPH06286083 A JP H06286083A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- resin
- composite pipe
- polyethylene
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、給水、給湯用配管等に
使用する複合管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite pipe used for water supply, hot water supply piping and the like.
【０００２】[0002]
【従来の技術】近時、給水、給湯用、或いは排水、ガス
配管用等に、アルミニウム管等の金属管の内周面をポリ
エチレン等の合成樹脂で被覆された２層構造の複合管が
使用されており、更には、３層構造、即ち最内層が架橋
ポリエチレン、第２層がアルミニウム等の金属、第３層
が架橋ポリエチレンからなる複合管等も使用されている
（実公平3-41184 公報）。これらの複合管は内周面が合
成樹脂層となっていることにより、管内を通過する流体
の影響による腐食に強く、又、３層構造の複合管の外層
が合成樹脂層のものにあっては、外部からの影響による
腐食にも強く、機械的強度にも優れているため、配管材
として好適なものである。2. Description of the Related Art Recently, for water supply, hot water supply, drainage, gas piping, etc., a two-layer composite pipe in which the inner peripheral surface of a metal pipe such as an aluminum pipe is covered with a synthetic resin such as polyethylene is used. In addition, a three-layer structure, that is, a composite pipe in which the innermost layer is a crosslinked polyethylene, the second layer is a metal such as aluminum, and the third layer is a crosslinked polyethylene is also used (Japanese Utility Model Publication No. 3-41184). ). Since the inner peripheral surface of these composite pipes is a synthetic resin layer, they are resistant to corrosion due to the influence of the fluid passing through the pipes, and the outer layer of the three-layer composite pipe is a synthetic resin layer. Is excellent in corrosion due to external influences and excellent in mechanical strength, and is therefore suitable as a piping material.
【０００３】[0003]
【発明が解決しょうとする課題】上記これらの複合管に
おいて、金属管の内外層が架橋されたポリエチレンで構
成されている複合管にあっては、一般のポリエチレンで
被覆されているものより耐熱性、耐薬品性に優れてお
り、高温の給湯用や工業用配管としてより適したもので
ある。ところが、架橋されていることにより耐熱性等の
特性に優れる反面、本来のポリエチレン樹脂の特性であ
る熱融着性に欠けるという問題がある。このため配管工
事における管継手との接続加工は接着剤による方法がと
られているが、耐圧性、耐熱性に劣る欠点がある。Among these composite pipes described above, the composite pipe in which the inner and outer layers of the metal pipe are composed of cross-linked polyethylene has a higher heat resistance than that coated with general polyethylene. It has excellent chemical resistance and is more suitable for high temperature hot water supply and industrial piping. However, while it is excellent in properties such as heat resistance due to being crosslinked, it has a problem that it lacks the heat fusion property which is the original property of polyethylene resin. For this reason, the method of connecting with the pipe joint in the plumbing work is performed by using an adhesive, but it has a drawback that it is inferior in pressure resistance and heat resistance.
【０００４】本発明は、従来の複合管のこれらの問題点
に着目してなされたものであり、従来の問題点を解決
し、耐熱性、耐薬品性に優れると共に、熱融着による管
継手との接続加工の可能な複合管を提供するにある。The present invention has been made by paying attention to these problems of the conventional composite pipe, solves the conventional problems, is excellent in heat resistance and chemical resistance, and is a pipe joint by heat fusion. It is to provide a composite pipe that can be connected to and processed.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明においては、最内層が架橋ポリオレフイン系
樹脂層からなり、この外層となる第２層が補強層で形成
され、更に、この外層となる第３層が架橋ポリオレフイ
ン系樹脂層からなり、最外層が熱融着可能な熱可塑性合
成樹脂樹脂層により積層して４層構造の複合管とするこ
とを特徴とする。In order to achieve the above object, in the present invention, the innermost layer is a crosslinked polyolefin resin layer, and the second layer which is the outer layer is a reinforcing layer. The third layer, which is an outer layer, is composed of a crosslinked polyolefin resin layer, and the outermost layer is laminated with a heat-fusible thermoplastic synthetic resin resin layer to form a four-layer composite tube.
【０００６】本発明において、第２層となる補強層とし
ては、アルミニウム以外に、アルミニウム合金や銅、銅
合金などで構成されてもよく、又金属繊維、炭素繊維や
合成繊維等により補強された合成樹脂製のシート材や管
材でも使用可能である。In the present invention, the reinforcing layer serving as the second layer may be made of aluminum alloy, copper, copper alloy, etc., in addition to aluminum, and is reinforced by metal fibers, carbon fibers, synthetic fibers or the like. It is also possible to use synthetic resin sheet materials and pipe materials.
【０００７】又、この補強層の内層となる最内層と外層
となる第３層には後述の実施例にみられる水架橋型シラ
ン変成ポリエチレン樹脂以外に、化学架橋型のエチレン
樹脂の共重合体やポリプロピレン樹脂が使用できる。Further, in addition to the water-crosslinking type silane-modified polyethylene resin, which will be described later in Examples, a chemically crosslinkable ethylene resin copolymer is used for the innermost layer which is the inner layer and the third layer which is the outer layer of the reinforcing layer. Or polypropylene resin can be used.
【０００８】最外層には、後述の実施例にみられる非架
橋型のポリエチレン樹脂以外に、特に熱融着の可能な熱
可塑性合成樹脂であるＡＢＳ樹脂、ポリブテン樹脂、ポ
リプロピレン樹脂、ポリエーテルエーテルケトン樹脂、
ポリフェニレンスルフイド樹脂やポリフッ化ビニリデン
樹脂などが好適に使用可能である。In the outermost layer, in addition to the non-crosslinking type polyethylene resin which will be described later in Examples, ABS resin, polybutene resin, polypropylene resin and polyether ether ketone, which are thermoplastic synthetic resins capable of heat fusion, are used. resin,
Polyphenylene sulfide resin and polyvinylidene fluoride resin can be preferably used.
【０００９】[0009]
【作用】最内層が架橋ポリオレフイン系樹脂層からな
り、この外層となる第２層が補強層で形成され、更に、
この外層となる第３層が架橋ポリオレフイン系樹脂層か
らなり、最外層が熱融着可能な熱可塑性合成樹脂樹脂層
により積層されているから、従来製品に比べ、特に配管
工事における管継手との接続加工がソケット融着、電気
融着など熱融着で行え、接続加工が簡単であると共に、
接続部の耐圧性にも優れる。又、耐熱性、耐薬品性に優
れているから、高温配管や、耐薬品性配管に好適であ
る。The innermost layer is composed of a crosslinked polyolefin resin layer, the second layer serving as an outer layer is formed of a reinforcing layer, and further,
The third layer, which is the outer layer, is composed of a cross-linked polyolefin resin layer, and the outermost layer is laminated with a heat-sealable thermoplastic synthetic resin layer, so compared with conventional products, especially with pipe joints in piping work. Connection processing can be done by heat fusion such as socket fusion, electric fusion, and connection processing is simple,
Excellent pressure resistance of the connection part. Further, it has excellent heat resistance and chemical resistance, and is suitable for high temperature piping and chemical resistance piping.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面を参照して説明
する。図１は、本発明になる４層構造の複合管の断面図
で、１は最内層で水架橋型シラン変成ポリエチレン樹脂
を使った架橋ポリエチレンからなり、２は第２層で補強
層のアルミニウム板を成形加工により円筒状の管とした
ものであり、３は第３層であって最内層と同じ水架橋型
シラン変成ポリエチレン樹脂を使った架橋ポリエチレン
からなり、４は最外層で非架橋型のポリエチレン樹脂か
らなっている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a composite pipe having a four-layer structure according to the present invention, in which 1 is an innermost layer of crosslinked polyethylene using a water-crosslinking type silane-modified polyethylene resin, and 2 is an aluminum plate of a second layer and a reinforcing layer. Is a cylindrical tube formed by molding, 3 is a third layer and is made of a crosslinked polyethylene using the same water-crosslinking type silane-modified polyethylene resin as the innermost layer, and 4 is an outermost layer which is a non-crosslinked type. Made of polyethylene resin.
【００１１】図２（イ）、（ロ）は上記４層構造の複合
管の製造の一実施態様を示す説明図であり、図２（イ）
は複合管の第３層までの製造を示し、（ロ）は複合管の
最外層の被覆の態様を示す説明図である。図２（イ）に
おいて示すように、先ずドラム１４に巻かれた帯状のア
ルミニウム板２ａを成形機１０により連続的に円筒状に
曲げ加工してゆき、続いて溶接機１１により、円筒状に
曲げ加工されてできた突合せ部を溶接してアルミニウム
管２として補強層を形成する。次いで図示しない押出成
形機の先端部に設けられた内面被覆用の押出金型１２に
このアルミニウム管２を挿入してゆき、水架橋型シラン
変成ポリエチレン樹脂を押出しながらアルミニウム管２
の内面に被覆して水架橋型シラン変成ポリエチレン樹脂
からなる最内層１を形成し、引き続いて図示しない押出
成形機に設置された外面被覆用の押出金型１３により第
３層となる水架橋型シラン変成ポリエチレン樹脂を押出
しながらアルミニウム管２の外面に被覆して水架橋型シ
ラン変成ポリエチレン樹脂からなる第３層を形成して３
層構造の複合管３０とした。FIGS. 2 (a) and 2 (b) are explanatory views showing an embodiment of the production of the above-mentioned 4-layer composite pipe.
FIG. 3B is a diagram illustrating the production of the composite pipe up to the third layer, and FIG. As shown in FIG. 2 (a), first, the band-shaped aluminum plate 2a wound around the drum 14 is continuously bent into a cylindrical shape by the molding machine 10, and then bent into a cylindrical shape by the welding machine 11. The butt portions formed by processing are welded to form a reinforcing layer as the aluminum tube 2. Next, the aluminum tube 2 is inserted into an extrusion die 12 for coating the inner surface provided at the tip of an extrusion molding machine (not shown), and the aluminum tube 2 is extruded while extruding the water-crosslinking type silane-modified polyethylene resin.
To form the innermost layer 1 made of a water-crosslinking type silane-modified polyethylene resin, and subsequently form a third layer by an extrusion die 13 for coating the outer surface installed in an extrusion molding machine (not shown). While extruding the silane-modified polyethylene resin, the outer surface of the aluminum tube 2 is coated to form a third layer composed of a water-crosslinking silane-modified polyethylene resin.
The composite pipe 30 having a layered structure was used.
【００１２】この３層構造となった複合管３０をドラム
に巻き取ってコイル状にし、温水中に浸漬することによ
り変成反応を起こさせ水架橋型ポリエチレン樹脂を架橋
ポリエチレンとして、アルミニウム管２の内外層がこの
架橋ポリエチレンからなる３層複合管３０とした。次
に、図２（ロ）に示すように、ドラム１５にコイル状に
巻かれた上記の３層複合管３１の外層に、更に外層被覆
用の押出金型１６によりポリエチレン樹脂を押出して、
最外層がポリエチレン樹脂で被覆された４層構造の本発
明の複合管４０とした。The composite pipe 30 having the three-layer structure is wound on a drum to form a coil, which is immersed in warm water to cause a metamorphic reaction so that a water-crosslinkable polyethylene resin is used as a crosslinked polyethylene. A three-layer composite pipe 30 having a layer made of this crosslinked polyethylene was prepared. Next, as shown in FIG. 2B, a polyethylene resin is further extruded onto the outer layer of the three-layer composite pipe 31 wound in a coil on the drum 15 by the extrusion die 16 for covering the outer layer,
A composite pipe 40 of the present invention having a four-layer structure in which the outermost layer was coated with polyethylene resin was obtained.
【００１３】図３は、本発明の上記実施例の複合管４０
の管端面を最外層と同じポリエチレン樹脂で被覆した例
を示す部分断面図で、４ａはポリエチレン樹脂で、二次
加工により管端面を被覆した状態を示すものである。こ
のポリエチレン樹脂の被覆により、アルミニウム管２の
管端面からの腐食を防止することができ、又、本発明の
複合管４０同士のバット融着を行うことが可能である。FIG. 3 shows the composite pipe 40 of the above embodiment of the present invention.
4a is a partial cross-sectional view showing an example in which the pipe end surface is coated with the same polyethylene resin as the outermost layer, 4a is a polyethylene resin, and shows a state in which the pipe end surface is coated by secondary processing. By coating with this polyethylene resin, it is possible to prevent corrosion from the tube end surface of the aluminum tube 2, and it is possible to perform butt fusion between the composite tubes 40 of the present invention.
【発明の効果】本発明においては、最内層が架橋ポリオ
レフイン系樹脂層からなり、この外層となる第２層が補
強層で形成され、更に、この外層となる第３層が架橋ポ
リオレフイン系樹脂層からなり、最外層が熱融着可能な
熱可塑性合成樹脂樹脂層により積層されているから、従
来製品に比べ、特に配管工事における熱可塑性合成樹脂
製の管継手との接続加工が熱融着で行え、接続加工が簡
単であると共に、接続部の耐圧性にも優れる。又、耐熱
性、耐薬品性に優れているから、高温、耐薬品性配管に
好適である。従って、給湯等の耐熱、耐圧配管に好適で
ある。INDUSTRIAL APPLICABILITY In the present invention, the innermost layer is a crosslinked polyolefin resin layer, the second outer layer is a reinforcing layer, and the third outer layer is a crosslinked polyolefin resin layer. The outermost layer is made of a thermoplastic synthetic resin layer that can be heat-sealed. It can be performed, the connection processing is simple, and the pressure resistance of the connection portion is excellent. Further, it has excellent heat resistance and chemical resistance, and is suitable for high temperature and chemical resistance piping. Therefore, it is suitable for heat resistant and pressure resistant piping such as hot water supply.
【図１】本発明複合管の一例を示す断面図。FIG. 1 is a sectional view showing an example of a composite pipe of the present invention.
【図２】本発明複合管の製造の一態様を示す説明図であ
り、（イ）は、本発明複合管の第３層までの製造態様を
示す。（ロ）は、本発明複合管の第４層の被覆の態様を
示す。FIG. 2 is an explanatory view showing one embodiment of the production of the composite pipe of the present invention, and FIG. 2 (a) shows a production form up to the third layer of the composite pipe of the present invention. (B) shows a mode of coating the fourth layer of the composite pipe of the present invention.
【図３】複合管の管端面をポリエチレン樹脂で被覆した
例を示す部分断面図である。FIG. 3 is a partial cross-sectional view showing an example in which a pipe end surface of a composite pipe is coated with polyethylene resin.
１、３ 架橋ポリエチレン ２ アルミニウム ２ａ アルミニウム板 ３１ ３層管 ４、４ａ ポリエチレン ４１ ４層管 1,3 Cross-linked polyethylene 2 Aluminum 2a Aluminum plate 31 3-layer tube 4, 4a Polyethylene 41 4-layer tube
Claims (1)
なり、この外層となる第２層が補強層で形成され、更
に、この外層となる第３層が架橋ポリオレフイン系樹脂
層からなり、最外層が熱融着可能な熱可塑性合成樹脂樹
脂層で積層されていることを特徴とする複合管。1. An innermost layer is composed of a crosslinked polyolefin resin layer, a second layer serving as an outer layer is formed of a reinforcing layer, and a third layer serving as an outer layer is composed of a crosslinked polyolefin resin layer, and an outermost layer. Is laminated with a thermoplastic synthetic resin layer capable of heat fusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5080518A JPH06286083A (en) | 1993-04-07 | 1993-04-07 | Composite tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5080518A JPH06286083A (en) | 1993-04-07 | 1993-04-07 | Composite tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06286083A true JPH06286083A (en) | 1994-10-11 |
Family
ID=13720538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5080518A Pending JPH06286083A (en) | 1993-04-07 | 1993-04-07 | Composite tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06286083A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008002675A (en) * | 2006-06-23 | 2008-01-10 | San-Ei Faucet Mfg Co Ltd | Connection structure of triple-layer pipe |
| JP2009197834A (en) * | 2008-02-19 | 2009-09-03 | Mitsubishi Electric Corp | Multilayer insulating pipe connection structure |
| CN104197115A (en) * | 2014-09-26 | 2014-12-10 | 安徽正石新型建材有限公司 | Drainage composite pipe |
| CN105972331A (en) * | 2016-06-29 | 2016-09-28 | 巢湖鹏远金属焊管有限公司 | High-toughness aluminum-plastic composite tube |
| CN110541975A (en) * | 2019-09-17 | 2019-12-06 | 浙江伟星新型建材股份有限公司 | polyolefin pipe material capable of self-cleaning, preventing scaling and waxing as well as preparation method and application thereof |
-
1993
- 1993-04-07 JP JP5080518A patent/JPH06286083A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008002675A (en) * | 2006-06-23 | 2008-01-10 | San-Ei Faucet Mfg Co Ltd | Connection structure of triple-layer pipe |
| JP4684964B2 (en) * | 2006-06-23 | 2011-05-18 | 株式会社三栄水栓製作所 | Three-layer pipe connection structure |
| JP2009197834A (en) * | 2008-02-19 | 2009-09-03 | Mitsubishi Electric Corp | Multilayer insulating pipe connection structure |
| CN104197115A (en) * | 2014-09-26 | 2014-12-10 | 安徽正石新型建材有限公司 | Drainage composite pipe |
| CN105972331A (en) * | 2016-06-29 | 2016-09-28 | 巢湖鹏远金属焊管有限公司 | High-toughness aluminum-plastic composite tube |
| CN105972331B (en) * | 2016-06-29 | 2018-07-13 | 巢湖鹏远金属焊管有限公司 | High tenacity aluminum plastic composite pipe |
| CN110541975A (en) * | 2019-09-17 | 2019-12-06 | 浙江伟星新型建材股份有限公司 | polyolefin pipe material capable of self-cleaning, preventing scaling and waxing as well as preparation method and application thereof |
| CN110541975B (en) * | 2019-09-17 | 2021-08-24 | 浙江伟星新型建材股份有限公司 | Polyolefin pipe material capable of self-cleaning, preventing scaling and waxing as well as preparation method and application thereof |
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