In the manufacturing process of submarine cables, the bundling and wrapping of internal cores are important steps to ensure the structural integrity and performance stability of the cable. For tapes with anti seawater immersion and anti-corrosion properties, it is usually necessary to consider their material characteristics, corrosion resistance, mechanical strength, and compatibility with other components of the cable.
1、Material composition
Insulation material: Adhesive tape is usually made of materials with good insulation properties, such as polyethylene (PE), cross-linked polyethylene (XLPE), etc. These materials not only effectively isolate seawater, but also prevent current leakage and protect the internal core of the cable from external environmental influences.
Anti corrosion coating: In order to further enhance the anti seawater immersion and anti-corrosion ability of the strip, it is necessary to apply a layer of anti-corrosion coating on its surface. This coating is usually made of corrosion-resistant materials such as polyurethane (PUR) and polyvinyl chloride (PVC), which can resist the erosion of salt, chemicals, and microorganisms in seawater.
2、Function and purpose
Binding and wrapping: Adhesive tape is mainly used for binding and wrapping the core inside submarine cables to ensure the stability of the core position in the cable and prevent displacement or looseness during transportation, laying, and use. Meanwhile, by tightly wrapping, the overall mechanical strength of the cable can be improved, enhancing its resistance to wear and pressure.
Waterproof and anti-corrosion: As an important component of submarine cables, adhesive tape must have good waterproof and anti-corrosion performance. They can effectively isolate the damage of seawater and corrosive substances to the core inside the cable, thereby extending the service life of the cable and ensuring the reliability and stability of communication or power transmission.
3、Matters needing attention
Material selection: When selecting tapes for bundling and wrapping the core of submarine cables, it is necessary to fully consider their material characteristics, corrosion resistance, mechanical strength, and compatibility with other components of the cable. Only by selecting appropriate materials can the overall performance and service life of the cable be ensured.
Manufacturing process: The manufacturing process of strip is also one of the important factors affecting its performance. In the manufacturing process, it is necessary to strictly control the production process and quality standards to ensure that the uniformity, density, and corrosion resistance of the strip meet the design requirements.
Common Specification Table
|
Properties |
Appearance |
Thickness |
Grammage |
Tensile strength |
Elongation |
Melting point |
Permeability |
Insulating property |
|
Single-layer |
Smooth surface, neat edge, no damage |
0.25±0.03 |
240±20 |
≥100 |
≥12 |
260 |
Water absorption rate |
6000V 5 minutes without breakdown |
|
0.30±0.03 |
260±20 |
≥100 |
≥12 |
260 |
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|
0.35±0.03 |
270±20 |
≥100 |
≥12 |
260 |
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|
Double-layer |
Smooth surface, neat edge, no damage |
0.25±0.03 |
240±20 |
≥100 |
≥12 |
260 |
||
|
0.30±0.03 |
260±20 |
≥100 |
≥12 |
260 |
||||
|
0.35±0.03 |
270±20 |
≥100 |
≥12 |
260 |
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|
Notice |
Outer diameter of 400mm or more, inner diameter of the disc hole Φ56mm Φ76mm Φ90mm Φ100mm |
Special thickness 0.4、0.5、1.0 |
|
Special specification thickness ≥1000 |
|
|
Salt corrosion prevention |
|
|
Application |
Specially used for bundling and wrapping the core inside submarine cables, it has anti seawater immersion and anti-corrosion effects. It is also used for bundling and insulation of the core inside mining cables. It can withstand high temperature and long-term vulcanization without sticking, cracking, melting, or deformation. |
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Support customizing other specifications |
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