JPH07205326A - Manufacture of protective pipe of cable - Google Patents
Manufacture of protective pipe of cableInfo
- Publication number
- JPH07205326A JPH07205326A JP6000834A JP83494A JPH07205326A JP H07205326 A JPH07205326 A JP H07205326A JP 6000834 A JP6000834 A JP 6000834A JP 83494 A JP83494 A JP 83494A JP H07205326 A JPH07205326 A JP H07205326A
- Authority
- JP
- Japan
- Prior art keywords
- steel wire
- protection tube
- cable protection
- manufacturing
- cable
- 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
- Details Of Indoor Wiring (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、外ケーブル或いは他の
ケーブルを保護する為に使用されるケーブル保護管の製
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 method of manufacturing a cable protection tube used for protecting an outer cable or another cable.
【０００２】[0002]
【従来の技術】一般に、従来のケーブル保護管は、例え
ば、ＰＥ（硬質ポリエチレン）管やＦＲＰ（繊維強化プ
ラスチック）管等が使用されている。これらのケーブル
保護管は、射出成形等により製造されている。2. Description of the Related Art Generally, PE (hard polyethylene) pipes, FRP (fiber reinforced plastic) pipes, etc. are used as conventional cable protection pipes. These cable protection tubes are manufactured by injection molding or the like.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上述した従
来のケーブル保護管の全体を合成樹脂で製造する場合、
耐候性や防錆性に優れるものの、ケーブルに緊張力を加
えた場合に、保護管に摩擦抵抗でケーブルが喰い込み、
緊張力が低下すると云う欠点が存在した。また、ケーブ
ルを緊張した場合に、当接部で保護管が潰れてしまいケ
ーブルの保護をなさないと云う欠点が存在した。By the way, in the case where the above-mentioned conventional cable protection tube is manufactured entirely from synthetic resin,
Although it has excellent weather resistance and rust resistance, when tension is applied to the cable, the cable bites into the protective tube due to friction resistance,
There was a drawback that tension decreased. Further, when the cable is strained, there is a drawback that the protection tube is crushed at the contact portion and the cable is not protected.
【０００４】本発明の目的は、上述した従来の欠点に鑑
みなされたもので、ケーブルの緊張により、摩擦抵抗が
増加したり、潰れたりすることのないケーブル保護管の
製造方法を提供することにある。An object of the present invention was made in view of the above-mentioned conventional drawbacks, and it is an object of the present invention to provide a method of manufacturing a cable protection tube in which frictional resistance is not increased or crushed due to tension of the cable. is there.
【０００５】[0005]
【課題を解決するための手段】本発明に係るケーブル保
護管の製造方法は、鋼線を螺旋状に成形する工程と、内
側となる中央部の長手方向に沿って鋼線保持用リブ溝を
有した帯状体を射出成型する工程と、前記螺旋状に形成
された鋼線に沿って前記帯状に形成された合成樹脂の鋼
線保持用リブ溝を嵌合しつつ一体の筒状体とする工程
と、前記工程で一体化された筒状体の外周面に外被体を
被覆する工程とからなる事を特徴とするケーブル保護管
の製造方法である。A method of manufacturing a cable protection tube according to the present invention comprises a step of forming a steel wire in a spiral shape, and a rib groove for holding a steel wire along a longitudinal direction of a central portion which is an inner side. The step of injection-molding the band-shaped body having the same, and the synthetic resin steel wire-holding rib groove formed in the band-shaped along the spirally-formed steel wire are fitted to form an integral tubular body. A method for manufacturing a cable protection tube, comprising: a step; and a step of covering the outer peripheral surface of the tubular body integrated in the step with an outer jacket.
【０００６】また、前記帯状体を射出成型する工程にお
いて、帯状体の両縁側に互い違いの接合段部を設けるも
のである。また、前記鋼線と帯状体を一体の筒状体とす
る工程には、隣合う帯状体の接合段部を接合する工程を
含むものであってもよい。更に、前記外被体を被覆する
工程は、溶融した合成樹脂を射出成型することを特徴と
するケーブル保護管の製造方法であっても良い。更にま
た、前記外被体を被覆する工程は、形状記憶樹脂を被着
させた後、温度制御して合体させることを特徴とするケ
ーブル保護管の製造方法であってもよい。Further, in the step of injection molding the band-shaped body, staggered joining steps are provided on both edges of the band-shaped body. Further, the step of forming the steel wire and the band-shaped body into an integral cylindrical body may include a step of bonding the joining step portions of the adjacent band-shaped bodies. Furthermore, the step of coating the outer cover may be a method for manufacturing a cable protection tube, which is characterized in that molten synthetic resin is injection-molded. Furthermore, the step of coating the outer cover may be a method for manufacturing a cable protection tube, characterized in that after the shape memory resin is applied, the outer cover is temperature-controlled to be integrated.
【０００７】[0007]
【作用】このように、本発明に係るケーブル保護管の製
造方法によれば、保護管の内周面に鋼線が一部露出して
いるので、ケーブルが合成樹脂に直接接触する事なく、
緊張抵抗の増加を低減できる。また、保護管の内周面に
鋼線が一部露出しているので緊張により、保護管が潰れ
るのを防止できる。As described above, according to the method for manufacturing a cable protection tube of the present invention, since the steel wire is partially exposed on the inner peripheral surface of the protection tube, the cable does not come into direct contact with the synthetic resin,
The increase in tension resistance can be reduced. Further, since the steel wire is partially exposed on the inner peripheral surface of the protective tube, it is possible to prevent the protective tube from being crushed due to tension.
【０００８】[0008]
【実施例】以下、添付図面に従って本発明の一実施例を
説明する。図１は、本発明の一実施例であるケーブル保
護管の製造方法に使用される各装置の全体構成を示す平
面図、図２は同ケーブル保護管の製造方法に使用される
帯状に形成された帯状体の断面図、図３は同筒状体の被
覆状態を示す断面図、図４は同保護管の横断面図であ
る。An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a plan view showing an overall configuration of each device used in a method for manufacturing a cable protection tube according to an embodiment of the present invention, and FIG. 2 is a band shape used in the method for manufacturing the cable protection tube. FIG. 3 is a cross-sectional view of the band-shaped body, FIG. 3 is a cross-sectional view showing a state of covering the tubular body, and FIG.
【０００９】本発明のケーブル保護管の製造方法は、鋼
線を螺旋状に成形する工程（Ａ）と、両縁側に互い違い
の接合段部を有するとともに中央部に鋼線保持用リブ溝
を有した帯状体を射出成型する工程（Ｂ）と、前記螺旋
状に形成された鋼線に沿って前記帯状に形成された合成
樹脂の鋼線保持用リブ溝を嵌合しつつ一体の筒状体とす
る工程（Ｃ）と、前記工程で一体化された筒状体の外周
面に外被体を被覆する工程（Ｄ）とからなる。The method for manufacturing a cable protection tube according to the present invention comprises a step (A) of forming a steel wire into a spiral shape, a staggered joining step portion on both edges, and a steel wire holding rib groove in the central portion. (B) of injection-molding the strip-shaped body and an integral tubular body while fitting the rib-shaped groove for holding the steel wire of synthetic resin formed in the strip shape along the steel wire formed in the spiral shape And the step (D) of covering the outer peripheral surface of the tubular body integrated in the above step with the outer jacket.
【００１０】鋼線を螺旋状に成形する工程（Ａ）は、コ
イリングマシン１０により線材１１を螺旋状に捲回し
て、スパイラル巻線を形成する。巻線の径は、必要に応
じて自由に決定する事ができる。したがって、サイズの
変更が容易である。In the step (A) of forming a steel wire into a spiral shape, the coiling machine 10 spirally winds the wire material 11 to form a spiral winding. The diameter of the winding can be freely determined as needed. Therefore, it is easy to change the size.
【００１１】両縁側に互い違いの接合段部を有するとと
もに中央部に鋼線保持用リブ溝を有した帯状体を射出成
型する工程（Ｂ）は、押し出し機１２で図２に示すよう
な左右に段違いの接合段部１３ａ、１３ｂを有した帯状
体１４を射出成型する。また、該帯状体１４の中央部に
は、鋼線保持用リブ溝１５が形成されている。鋼線保持
用リブ溝１５は、帯状体１４の略中央に形成され、線材
１１の径と等しく形成されている。射出成型された帯状
体１４は、水槽１６で冷却され硬化する。硬化した帯状
体１４は、次の工程に送られる。The step (B) of injection-molding a band-shaped body having staggered joining steps on both edges and having a steel wire holding rib groove in the center is carried out by the extruder 12 as shown in FIG. The band-shaped body 14 having the joining steps 13a and 13b having different steps is injection-molded. In addition, a steel wire holding rib groove 15 is formed in the center of the band-shaped body 14. The steel wire holding rib groove 15 is formed substantially at the center of the strip-shaped body 14 and has the same diameter as the wire rod 11. The injection-molded strip 14 is cooled and hardened in the water tank 16. The cured strip 14 is sent to the next step.
【００１２】前記螺旋状に形成された鋼線に沿って前記
帯状に形成された合成樹脂の鋼線保持用リブ溝を嵌合し
つつ一体の筒状体１７とする工程（Ｃ）では、コイリン
グマシン１０で形成された螺線に沿って帯状体１４の鋼
線保持用リブ溝１５を嵌合しつつ巻き付けて一体の筒状
体１７とする。この際、帯状体１４の左右の段違いの接
合段部１３ａ、１３ｂは、重なり合う。重なり合った接
合段部は、熱溶着機１８で所定間隔で仮止めされる。な
お、熱溶着機１８はこれに限る事なく、高周波溶着等の
他の接合手段であってもよい。In the step (C) of fitting the steel wire retaining rib groove of the synthetic resin formed in the strip shape along the spirally formed steel wire into the integral cylindrical body 17 (C), The steel wire holding rib groove 15 of the strip 14 is fitted and wound along a spiral formed by the machine 10 to form an integral cylindrical body 17. At this time, the left and right joining step portions 13a and 13b of the strip 14 overlap each other. The overlapping joining steps are temporarily fixed by the heat welding machine 18 at predetermined intervals. The heat welding machine 18 is not limited to this, and may be other joining means such as high frequency welding.
【００１３】前記工程で一体化された筒状体１７の外周
面に外被体を被覆するする工程（Ｄ）は、射出成型機１
９で溶融させた合成樹脂を回転ダイ２０部に射出し、筒
状体１７の外周に所定厚さで外被体２１を形成する。外
被体２１は合成樹脂から成り、例えば、高品質ポリエチ
レン等から構成されている。外被体２１の肉厚は、自由
に設定する事ができ、用途に応じて耐力を余計に必要と
する場合、厚くする事ができる。また、必要に応じてカ
ーボン繊維等を混入してもよい。更に、耐候性を考慮し
て、外被体２１の色彩を黒或いは他の色に決定する事が
できる。In the step (D) of covering the outer peripheral surface of the cylindrical body 17 integrated in the above step with the outer jacket, the injection molding machine 1 is used.
The synthetic resin melted in 9 is injected into the rotary die 20 to form the outer cover 21 with a predetermined thickness on the outer periphery of the cylindrical body 17. The outer casing 21 is made of synthetic resin, for example, high quality polyethylene or the like. The thickness of the outer cover 21 can be set freely, and can be made thicker if extra proof stress is required depending on the application. Moreover, you may mix carbon fiber etc. as needed. Further, in consideration of weather resistance, the color of the outer cover 21 can be determined to be black or another color.
【００１４】また、合成樹脂の種類を筒状体１７と外被
体２１を任意に変更する事ができる。外被体２１の被着
後、成型水槽２２に入れ硬化させる。硬化された、ケー
ブル保護管は、左右にローラ２３を備えた引き取り機２
４で搬送された後、切断機２５で所定長さに切断する。Further, the type of synthetic resin can be arbitrarily changed between the cylindrical body 17 and the outer casing 21. After the outer cover 21 is attached, the outer cover 21 is placed in a molding water tank 22 and cured. The hardened cable protection tube has a take-off device 2 provided with rollers 23 on the left and right.
After being conveyed by 4, the cutting machine 25 cuts it into a predetermined length.
【００１５】前記工程で一体化された筒状体１７の外周
面に外被体２１を被覆するする工程（Ｄ）は、溶融した
合成樹脂を射出成型する代わりに、緩く挿通した形状記
憶樹脂を被着させた後、加熱或いは冷却して収縮させて
合体させるものであってもよい。この様に構成した場
合、射出成型機１９が不要である。In the step (D) of covering the outer peripheral surface of the cylindrical body 17 integrated in the above step with the outer cover 21, instead of injection molding a molten synthetic resin, a loosely inserted shape memory resin is used. After being adhered, it may be heated or cooled to shrink and be united. In the case of such a configuration, the injection molding machine 19 is unnecessary.
【００１６】尚、筒状体１７と外被体２１の材質を変
え、外被体２１には着色可能な合成樹脂を使用し、任意
の色に着色すれば、用途に応じて色分けする事ができ
る。It should be noted that, by changing the materials of the cylindrical body 17 and the outer casing 21 and using a colorable synthetic resin for the outer casing 21 and coloring it in any color, it is possible to color-code it according to the application. it can.
【００１７】次に、以上のように構成されたケーブル保
護管の製造方法で製造されたケーブル保護管の使用方法
について説明する。例えば、偏向ブロック等にケーブル
保護管で保護されたケーブルを通し、ジャッキで緊張す
る。この際、ケーブルとケーブル保護管とは、線材１１
を点接触であり、従来の面接触に比較して摩擦力が著し
く低減する。Next, a method of using the cable protection tube manufactured by the method of manufacturing the cable protection tube having the above-described structure will be described. For example, a cable protected by a cable protection tube is passed through a deflection block or the like, and then tensioned with a jack. At this time, the cable and the cable protection tube are the wire rod 11
Is point contact, and the frictional force is significantly reduced as compared with the conventional surface contact.
【００１８】また、従来の合成樹脂製のケーブル保護管
では、ケーブルを緊張する際の押圧力により容易に圧壊
してしまったが、本発明のケーブル保護管の製造方法に
より製造されたケーブル保護管では、鋼線及び高硬度の
合成樹脂で構成したので、緊張力に充分耐える事ができ
る。Further, in the conventional cable protection tube made of synthetic resin, the cable protection tube was easily crushed by the pressing force at the time of tensioning the cable, but the cable protection tube manufactured by the method of manufacturing the cable protection tube of the present invention. Since it is made of steel wire and high-hardness synthetic resin, it can sufficiently withstand tension.
【００１９】図６は、本発明のケーブル保護管の製造方
法に製造された保護管の他の実施例を示す縦断面図であ
る。この実施例では、帯状体３０の接合段部３１ａ、３
１ｂに係合用突起３２と他端に係合用凹部３３を帯状体
を射出成型する工程（Ｂ）で形成した例である。このよ
うに帯状体３０を構成した場合、次の螺旋状に形成され
た鋼線に沿って前記帯状に形成された合成樹脂の鋼線保
持用リブ溝を嵌合しつつ一体の筒状体１７とする工程
（Ｃ）において、帯状体３０の接合段部を熱溶着する必
要がなく、係合用突起３２と係合用凹部３３を嵌合する
事により簡易に製造する事ができる。FIG. 6 is a longitudinal sectional view showing another embodiment of the protective tube manufactured by the method for manufacturing a cable protective tube of the present invention. In this embodiment, the joining step portions 31a, 3a of the strip 30 are provided.
1B is an example in which the engaging protrusion 32 is formed on 1b and the engaging concave portion 33 is formed on the other end in the step (B) of injection molding a strip. When the strip-shaped body 30 is configured in this manner, the tubular body 17 is integrally formed while fitting the steel-wire-holding rib groove of the synthetic resin formed in the strip shape along the next spirally formed steel wire. In the step (C) described above, it is not necessary to heat-bond the joining step portion of the band-shaped body 30, and the engaging protrusion 32 and the engaging recess portion 33 can be fitted together to facilitate the manufacturing.
【００２０】また、保護管の中にグラウトを注入する場
合にも、保護管とグラウトとの付着性が従来の合成樹脂
製の保護管に比較して向上する為、確実な保護が可能で
ある。尚、本発明は以上の実施例に限ることなく本発明
の技術思想に基いて種々の設計変更が可能である。Also, when the grout is injected into the protective tube, the adhesion between the protective tube and the grout is improved as compared with the conventional synthetic resin protective tube, so that reliable protection is possible. . The present invention is not limited to the above embodiments, and various design changes can be made based on the technical idea of the present invention.
【００２１】[0021]
【発明の効果】以上詳細に説明したように、本発明に係
るケーブル保護管の製造方法は、鋼線を螺旋状に成形す
る工程と、両縁側に互い違いの接合段部を有するととも
に中央部に鋼線保持用リブ溝を有した帯状体を射出成型
する工程と、前記螺旋状に形成された鋼線に沿って前記
帯状に形成された合成樹脂の鋼線保持用リブ溝を嵌合し
つつ一体の筒状体とする工程と、前記工程で一体化され
た筒状体の外周面に外被体を被覆する工程とからなる事
を特徴とするケーブル保護管の製造方法であるので、可
撓性に富むと共に保護管の内周面に鋼線が一部露出して
いるので、挿入したケーブルが合成樹脂に直接接触する
事なく鋼線と点接触となり、ケーブルの緊張抵抗の増加
を低減できるケーブル保護管を容易に製造できる。As described in detail above, the method for manufacturing a cable protection tube according to the present invention includes a step of forming a steel wire in a spiral shape, and a step of staggering joints on both edges, and a central portion at the center. Injection molding a strip having a steel wire holding rib groove, and fitting the steel wire holding rib groove of synthetic resin formed in the strip shape along the steel wire formed in a spiral shape The method for producing a cable protection tube is characterized by comprising a step of forming an integral tubular body and a step of coating the outer peripheral surface of the tubular body integrated in the above step with a jacket. Since the steel wire is highly flexible and part of the steel wire is exposed on the inner peripheral surface of the protective tube, the inserted cable does not come into direct contact with the synthetic resin but comes into point contact with the steel wire, reducing the increase in cable tension resistance. The cable protection tube can be easily manufactured.
【００２２】また、保護管の内周面に鋼線が一部露出し
ているので緊張により、保護管が潰れるのを防止でき
る。また、本発明のケーブル保護管の製造方法により製
造されたケーブル保護管は、耐候性に富み、内部に挿入
されたケーブルが外気に直接触れる事を防止して、ケー
ブルの酸化や劣化を防止出来る。更に、本発明により製
造されたケーブル保護管は、接合部の気密性が著しく向
上する。また、請求項４のように形状記憶樹脂を被着さ
せた後、加熱或いは冷却等の温度制御して合体させれ
ば、射出成型機が不要である。Further, since the steel wire is partially exposed on the inner peripheral surface of the protective tube, it is possible to prevent the protective tube from being crushed due to tension. In addition, the cable protection tube manufactured by the method for manufacturing a cable protection tube of the present invention has high weather resistance, and prevents the cable inserted inside from directly contacting the outside air, and can prevent oxidation and deterioration of the cable. . Furthermore, the cable protection tube manufactured according to the present invention has a significantly improved air tightness at the joint. Further, if the shape memory resin is adhered and then the temperature is controlled such as heating or cooling to combine the resin, an injection molding machine is not required.
【図１】本発明の一実施例であるケーブル保護管の製造
方法に使用される各装置の全体構成を示す平面図であ
る。FIG. 1 is a plan view showing an overall configuration of each device used in a method for manufacturing a cable protection tube according to an embodiment of the present invention.
【図２】本発明のケーブル保護管の製造方法に使用され
る帯状に形成された帯状体の断面図である。FIG. 2 is a cross-sectional view of a strip-shaped body used in the method for manufacturing a cable protection tube of the present invention.
【図３】本発明のケーブル保護管の製造方法における筒
状体の被覆状態を示す断面図である。FIG. 3 is a cross-sectional view showing a covering state of a cylindrical body in the method for manufacturing a cable protection tube of the present invention.
【図４】本発明のケーブル保護管の製造方法に製造され
た保護管の横断面図であるFIG. 4 is a cross-sectional view of a protection tube manufactured by the method for manufacturing a cable protection tube of the present invention.
【図５】本発明のケーブル保護管の製造方法に製造され
た保護管の縦断面図である。FIG. 5 is a vertical cross-sectional view of a protection tube manufactured by the method for manufacturing a cable protection tube of the present invention.
【図６】本発明のケーブル保護管の製造方法に製造され
た保護管の他の実施例を示す縦断面図である。FIG. 6 is a vertical cross-sectional view showing another embodiment of the protection tube manufactured by the method for manufacturing a cable protection tube of the present invention.
１０ コイリングマシン １１ 線材 １２ 押し出し機 １３ａ、１３ｂ 接合段部 １４、３０ 帯状体 １５、３４ 鋼線保持用リブ溝 １６ 水槽 １７ 筒状体 １８ 熱溶着機 １９ 射出成型機 ２０ 回転ダイ ２１ 外被体 ２２ 成型水槽 ２３ ローラ ２４ 引き取り機 ２５ 切断機 ３１ａ、３１ｂ 接合段部 ３２ 係合用突起 ３３ 係合用凹部 10 Coiling Machine 11 Wire Rod 12 Extruder 13a, 13b Joining Steps 14, 30 Strips 15, 34 Steel Wire Holding Rib Groove 16 Water Tank 17 Cylindrical 18 Thermal Welding Machine 19 Injection Molding Machine 20 Rotating Die 21 Outer Body 22 Molding water tank 23 Roller 24 Pulling machine 25 Cutting machine 31a, 31b Joining step portion 32 Engaging protrusion 33 Engaging recess
Claims (5)
なる中央部の長手方向に沿って鋼線保持用リブ溝を有し
た帯状体を射出成型する工程と、前記螺旋状に形成され
た鋼線に沿って前記帯状に形成された合成樹脂の鋼線保
持用リブ溝を嵌合しつつ一体の筒状体とする工程と、前
記工程で一体化された筒状体の外周面に外被体を被覆す
る工程とからなる事を特徴とするケーブル保護管の製造
方法。1. A step of forming a steel wire into a spiral shape, a step of injection-molding a strip having a rib groove for holding a steel wire along a longitudinal direction of a central part which is an inner side, and the step of forming the spiral shape. The synthetic resin steel wire holding rib groove formed in a strip shape along the formed steel wire to form an integral cylindrical body, and an outer peripheral surface of the cylindrical body integrated in the step A method for manufacturing a cable protection tube, comprising:
て、帯状体の両縁側に互い違いの接合段部を設けること
を特徴とする請求項１記載のケーブル保護管の製造方
法。2. The method for manufacturing a cable protection tube according to claim 1, wherein in the step of injection-molding the strip, staggered joint steps are provided on both edges of the strip.
工程には、隣合う帯状体の接合段部を接合する工程を含
むことを特徴とする請求項１記載のケーブル保護管の製
造方法。3. The cable protection tube according to claim 1, wherein the step of forming the steel wire and the strip into an integral tubular body includes the step of joining the joining step portions of the adjacent strips. Manufacturing method.
合成樹脂を射出成型することを特徴とする請求項１記載
のケーブル保護管の製造方法。4. The method of manufacturing a cable protection tube according to claim 1, wherein in the step of coating the outer cover body, a molten synthetic resin is injection-molded.
樹脂を被着させた後、温度制御して合体させることを特
徴とする請求項１記載のケーブル保護管の製造方法。5. The method of manufacturing a cable protection tube according to claim 1, wherein, in the step of covering the outer jacket, the shape memory resin is applied, and then the temperature protection is performed to combine them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00083494A JP3522320B2 (en) | 1994-01-10 | 1994-01-10 | Cable protection tube, its manufacturing apparatus and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00083494A JP3522320B2 (en) | 1994-01-10 | 1994-01-10 | Cable protection tube, its manufacturing apparatus and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07205326A true JPH07205326A (en) | 1995-08-08 |
| JP3522320B2 JP3522320B2 (en) | 2004-04-26 |
Family
ID=11484658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00083494A Expired - Lifetime JP3522320B2 (en) | 1994-01-10 | 1994-01-10 | Cable protection tube, its manufacturing apparatus and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3522320B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA93924C2 (en) * | 2006-10-04 | 2011-03-25 | Риб Лок Острелиа Пти Лимитед | Composite reinforced strip (embodiments), pipe with helical wound composite strip and method of its manufacturing (embodiments) |
| KR101260269B1 (en) | 2012-09-26 | 2013-05-03 | 박은영 | Apparatus and method for manufacturing pipe having reinforcement band using reclaimed plastic and pipe manufactured thereby |
-
1994
- 1994-01-10 JP JP00083494A patent/JP3522320B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3522320B2 (en) | 2004-04-26 |
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