JPS602733B2 - Surface treatment method for foamed polyethylene coated floating cable - Google Patents
Surface treatment method for foamed polyethylene coated floating cableInfo
- Publication number
- JPS602733B2 JPS602733B2 JP55124361A JP12436180A JPS602733B2 JP S602733 B2 JPS602733 B2 JP S602733B2 JP 55124361 A JP55124361 A JP 55124361A JP 12436180 A JP12436180 A JP 12436180A JP S602733 B2 JPS602733 B2 JP S602733B2
- Authority
- JP
- Japan
- Prior art keywords
- foamed polyethylene
- cable
- treatment method
- surface treatment
- polyethylene coated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Molding Of Porous Articles (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
- Manufacturing Of Electric Cables (AREA)
Description
【発明の詳細な説明】
この発明は発泡ポリエチレン被覆浮上ケーブルの表面を
平滑化する処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a treatment method for smoothing the surface of a foamed polyethylene coated floating cable.
水中で使用する海洋機器等に接続し、水中に浮上させる
ケーブルは各種の絶縁被覆導体をケーブル心とし、複数
心の場合はこれを撚り合せてその外部に発泡ポリエチレ
ンを被覆し、ケーブルに浮力を与えるものが使用され始
めている。Cables that are connected to marine equipment used underwater and floated underwater use various types of insulated conductors as cable cores, and in the case of multiple cores, these are twisted together and covered with foamed polyethylene on the outside to give the cable buoyancy. What you give is beginning to be used.
この場合、発泡ポリエチレン被覆の比重０．５〜０．７
にするために、発泡度３５〜４０％位のものが実用に供
されるが、発泡効果によりケーブルの表面が粗雑となり
機器へのケーブル導入部を防水処理する必要があり、こ
のため平滑な表面層とすることが望まれている。In this case, the specific gravity of the foamed polyethylene coating is 0.5 to 0.7.
In order to achieve this, a foam with a foaming degree of 35 to 40% is put into practical use, but the foaming effect makes the surface of the cable rough, making it necessary to waterproof the part where the cable enters the equipment. It is desired to have layers.
又ケーブルを水中で浮かせて使用する場合、ケーブル表
面が粗雑であると、流水抵抗が増大し、過大な張力がケ
ーブルにかかることになり、常に水中を航走する有線誘
導、動力供給用の機器に使用されるいわゆるテザーケー
ブルに於ては、流水抵抗が大きくなると航走機器（航走
体）の必要動力が大きくなり、従ってこの航走体に搭載
する推進装置、延し、ては航走体自体も大きくせざるを
得ないという悪循環を生ずる。In addition, when using a cable floating in water, if the cable surface is rough, water flow resistance will increase and excessive tension will be applied to the cable. In so-called tether cables used for This creates a vicious cycle in which the body itself is forced to grow larger.
特に太さや、サイズの異なる各種のケーブル線心を複合
させてより合せたケーブルでは、断面円形に近くより合
されないので、その外部に発泡ポリエチレン被覆を施し
ても、樹脂の付着量（肉厚）が均一とならず、これを発
泡することによって、厚さの不均一は増幅され、仕上り
形状は著るしい凹凸を生じることとなり、表面平滑化処
理の必要性は極めて大きい。In particular, cables made by combining various cable cores with different thicknesses and sizes cannot be twisted to have a circular cross section, so even if a foamed polyethylene coating is applied to the outside, the amount of resin deposited (thickness) is not uniform, and by foaming the non-uniform thickness, the non-uniformity of the thickness is amplified, and the finished shape will have significant irregularities, making it extremely necessary to perform surface smoothing treatment.
この発明は、発泡ポリエチレン被覆浮上ケーブルの上に
鉛を押出被覆することによって、前述の如き欠点を解消
した表面平滑化浮上ケーブルを得るものである。The present invention provides a levitation cable with a smooth surface which eliminates the above-mentioned drawbacks by extrusion coating lead on a levitation cable coated with foamed polyethylene.
次にこの発明を図面を参照しつつ説明すれば、第１図は
従来の発泡ポリエチレン被覆ケーブルの一例で、導体に
絶縁被覆を施した線心１（通常単心もしくは複数心のよ
り合せからなる）の外部に発泡ポリエチレン被覆層２が
設けられているが、発泡による微細な凹凸表面３′を形
成している。Next, the present invention will be explained with reference to the drawings. Fig. 1 shows an example of a conventional foamed polyethylene coated cable, in which the conductor is coated with an insulated wire core 1 (usually consisting of a single core or a strand of multiple cores). ) is provided with a foamed polyethylene coating layer 2 on the outside, which forms a finely uneven surface 3' due to foaming.
この発明ではこの上に加熱熔隔されている鉛被を押出被
覆するものであるから、発泡ポリエチレン被覆の表面は
鉛被により加圧状態になり内部のポリエチレンは鉛被か
ら付与される熱で微細な再発泡を起すと同時に表面は熔
隔し平滑となり、かくした後、鉛被を剥取れば第２図に
示したように平滑な表面３を持った発泡ポリエチレン被
覆浮上ケーブルが得られる。なお「鉛被の押出被覆後の
放置時間は特に必要とするものでないが、剥取りのため
には温度低下を要するもので通常一時間以上経過後に行
なわれる。In this invention, a heated lead coating is extruded and coated on top of the foamed polyethylene coating, so the surface of the foamed polyethylene coating is put under pressure by the lead coating, and the polyethylene inside is heated to form fine particles by the heat applied from the lead coating. At the same time as the re-foaming occurs, the surface becomes smooth due to melting, and after this, by peeling off the lead coating, a foamed polyethylene coated floating cable having a smooth surface 3 as shown in FIG. 2 is obtained. It should be noted that, although there is no particular requirement for the time the lead coating is allowed to stand after being extruded, it is necessary to lower the temperature in order to remove it, which is usually done after an hour or more has elapsed.
前記実施例では断面円形の発泡ポリエチレン被覆浮上ケ
ーブルを製造する場合について示したが、線心のサイズ
の異なるものをより合せた断面非円形の浮上ケーブルで
も同様に実施し得ることは云うまでもない。In the above example, a case was shown in which a foamed polyethylene coated levitation cable with a circular cross section was manufactured, but it goes without saying that the same process can be carried out with a levitation cable with a non-circular cross section made by twisting wire cores of different sizes. .
以上この発明は極めて簡単な方法で発泡ポリエチレン被
覆浮上ケーブルの表面平滑化を達成するものである。As described above, the present invention achieves smoothing of the surface of a foamed polyethylene-covered floating cable by an extremely simple method.
第１図は従来の発泡ポリエチレン被覆浮上ケーブルの一
例を示す横断面図、第２図はこの発明により表面処理を
行なった発泡ポリエチレン被覆浮上ケーブルの一例を示
す横断面図である。
１……ケーブル線心、２…・・・発泡ポリエチレン被覆
層、３′・…・・凹凸表面、３・…・・平滑な表面。
第１図第２図FIG. 1 is a cross-sectional view showing an example of a conventional foamed polyethylene-covered levitation cable, and FIG. 2 is a cross-sectional view showing an example of a foamed polyethylene-covered levitation cable subjected to surface treatment according to the present invention. 1... Cable core, 2... Foamed polyethylene coating layer, 3'... Uneven surface, 3... Smooth surface. Figure 1 Figure 2
Claims (1)
、発泡ポリエチレン被覆層の表面を平滑ならしめた後、
鉛を剥取ることを特徴とする発泡ポリエチレン被覆浮上
ケーブルの表面処理法。1 After extrusion coating lead on the foamed polyethylene coated wire and smoothing the surface of the foamed polyethylene coating layer,
A surface treatment method for foamed polyethylene-coated floating cables characterized by removing lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55124361A JPS602733B2 (en) | 1980-09-08 | 1980-09-08 | Surface treatment method for foamed polyethylene coated floating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55124361A JPS602733B2 (en) | 1980-09-08 | 1980-09-08 | Surface treatment method for foamed polyethylene coated floating cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5749123A JPS5749123A (en) | 1982-03-20 |
| JPS602733B2 true JPS602733B2 (en) | 1985-01-23 |
Family
ID=14883490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55124361A Expired JPS602733B2 (en) | 1980-09-08 | 1980-09-08 | Surface treatment method for foamed polyethylene coated floating cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS602733B2 (en) |
-
1980
- 1980-09-08 JP JP55124361A patent/JPS602733B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5749123A (en) | 1982-03-20 |
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